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What Is Plastic Mold Technology

What is Plastic Mold?

Plastic mold (mould) is a tool or die used in the manufacturing process to create plastic parts and products. The plastic mold is typically made of metal or another hard steel (H13, DIN1.2344, DIN 1.2343, 2083, NAK80, or similar steel) and is designed to hold melted plastic in a specific shape until it cools and solidifies.

Plastic mold manufacturers commonly use this process to make millions of plastic parts. These parts can have complex designs and the same shape. Other methods would find it hard or impossible to create them,Plastic injection molds are used in many industries. These include automotive plastic injection molded products, construction industry, , home application products, furniture industries, electronics industries, plastic molding toys, consumer products, and so on.

Making plastic mold injection is very complex jobs that must be manufactured by a professional injection mold maker. Below are the simple steps to make the plastic molds.

First, the part designer must create the model you want. Alternatively, you can hire your injection mold supplier to design the final product based on your needs.
Second, when the product design is approved, you need to find your mould maker to come up with a completely mold design. Once the mold design has been created, you can start to manufacture the plastic mold. The plastic injection mold manufacturing process includes drilling, lather machining, wire cutting, CNC machining, EDM, polishing, etc.
Third, the last step to making a plastic mold is mould fitting. When mold manufacturing is complete, you need to do the mold fitting. This checks if the components are in the right position. Mold fitting is the only way to check mold quality and improve any possible issues in advance.
Fourth, when mold fitting is finished, the actual injection molding process can start. At the beginning of the injection molding process, we called it mold trial. From the mold trial to large-scale production, we still need to fix some small injection molding problems. We must do several mold trials because the first one usually has some issues that need to be resolved.

After two or three mold trials until customer approval of the samples, we could start massive production runs. There is a simple process to follow. It includes part design, mold design, and mold manufacturing. This helps create perfect-looking plastic products.

Plastic mold manufacturing is actually a complex process. You must find a professional plastic mold maker to make your plastic molds.

What are the advantages of plastic mold technology?

Here are some of the advantages of plastic mold technology:

High efficiency and quick production

There are many good reasons why plastic injection molding is famous as the most common and successful form of molding. The process is quick compared to other methods. Its high production rate makes it more successful and affordable. Speed depends on the size and complexity of the mold, but just about 15–120 seconds pass between each cycle.

Better strength

Strength is one of the important factors that need to be determined when designing a plastic injection-molded part. The designer needs to know if the part should be rigid or flexible. This information helps them adjust the ribs or gussets. Understanding how the customer will be using the part and what kind of atmosphere the part will be exposed to is also vital.

Finding the right balance of design considerations will help address your parts need for stability and strength. Material selection plays another important role in the strength of the part.

Reduced waste

When searching for a high-volume injection molding supplier, it is important to consider their green manufacturing efforts. These efforts show a commitment to sustainability, quality, and safety.

During the molding process, excess plastic is produced. You want to look for a firm that has a system in place to recycle its excess plastic. The best eco-friendly plastic injection molding companies use advanced machines to cut down on waste, packaging, and transportation.

Low labor costs

Labor costs are generally relatively low in plastic injection molding in comparison with other kinds of molding. The ability to produce parts quickly and at a high quality improves effectiveness and efficiency.

The molding equipment usually operates with a self-gating mechanical tool. This keeps operations smooth and production going with little supervision.

Flexibility, material, and color

Choosing the right color and material for a project is key to making plastic molded parts. Due to the large range of both, the chances are almost limitless. The progress in polymers has led to many different types of resins to choose from.

It is important to work with an injection molder who has experience with different resins and uses. This includes resins that meet RoHS, FDA, NSF, and REACH standards.

To choose the best resin for your project, think about a few important factors. These include tensile strength, impact strength, flexibility, warm deflection, and water absorption.

If you are unsure about the best materials for your plastic molds, you can check injection molding materials. You can also contact us easily by emailing info@plasticmold.net.

What are the disadvantages of plastic mold technology?

Here are some of the disadvantages of plastic mold technology:

High initial investment costs

Quick-production injection molding needs an injection molding machine, injection plastic molds, injection molding equipment, other auxiliary equipment, etc.

The cost of injection molding machines and molds is high. This makes it a big investment. Therefore, it is not ideal for small batches.

High design requirements

To produce parts in large quantities, make sure the design is correct from the start. If you have to replace the mold later because of design problems, it will be very expensive.

High skill requirements: Making mold items depends on many factors. This means the technical skills needed are higher and harder to learn.

Injection molding machine operators need a lot of skill. They usually require 5 to 10 years of experience.

Plastic injection mold design and production workers need more technical skills. They usually require 5 to 10 years of experience.

Longer pre-production lead time is time-consuming.

The main equipment for injection molding is the mold. However, designing the mold takes a long time. Different tool-making methods and mold testing also slow down production.

Depending on the structure and size of the product idea, it generally takes 25–40 days to make the injection mold.

Once the plastic injection mold is ready, it often takes several attempts to adjust the injection molding machine settings. This process happens during the same-making stage. The goal is to find the best settings for fast production. However, this also requires some time.

When do you need plastic molds?

When you have a plastic product design that want to make it in life or sell on the market, you should consider using plastic injection mold technology. It offers great manufacturing options that you might be missing out on. No matter if you worry about accuracy, using plastic instead of metal, or cost, this list can help. We believe it will encourage you to consider plastic injection molding for your product again.

Part standard and accuracy

Plastic injection-molded parts can have high quality and accuracy as required. When using manufacturers in the U.S., accuracy is usually within 0.001 inches. Standard control measures, such as ISO certification, ensure your parts are high quality and accurate. However, the price will be higher than in China.

Volume of production

Once the mold making for plastic parts is made, the volume of production can be scaled up or down as needed.

Cost per plastic part

After the primary cost of the injection mold, the cost per part is extremely low. Choosing the right resin will affect the cost. However, machine wear and labor costs are low. This means that costs per part are lower than other manufacturing options when production volumes are high.

Complexity of parts

Plastics and their inject molds permit greater design freedom than many other producing specs. A skilled plastic mold company can create parts and sets of parts that require less work after they are made. This includes everything from smooth finishes to intricate designs.

Co-injection, overmolding, and double-shot

Parts don’t have to be made of one plastic. Double-shot molding and overmolding allow two types of plastic to be combined in the mold. These plastics can have different qualities, such as hardness and flexibility.

Co-injection molding allows one polymer to be injected as the core of another. This method creates parts that are more flexible and affordable.

Market-specific materials and standards

Plastic molding technology has been around for a long time and has the tools and standards to meet different markets. For example, if you are making medical parts and need traceability, you have options. These options help ensure that every part can be traced back to its batch.

Injection molding is a process used in most plastic productions and is very preferred by different businesses and firms. This is largely because it is pretty efficient and provides uniformity in all the items manufactured using this process.

To get the best results, it is best to work with a professional injection mold producer. They offer quality plastic injection molding services.

This process requires the use of expertise to make sure that the products meet high standards. Your mold supplier must choose the best material to use. They also need to create a working mould design. Finally, they should make a working prototype to start the production process.

Where can I find the best plastic mold company?

Sincere Tech is one of top 10 mold manufacturers in China. We provide custom plastic injection mold and molding services worldwide. Our services can save you 40% on plastic mold manufacturing and production. We have over 18 years of experience in plastic injection mold manufacturing services and fluent technical English communication.

We 100% guarantee that your project will be successful. You will be impressed and satisfied with our quality, price, and services. We are willing to share with you some of our customers to let you verify our quality and service. Send us your requirements for a quotation; you will not lose anything but our competitive price for reference.

To protect your project from copying, we can sign an NDA document to protect your project. In the following, you will find information about plastic injection molding processes, techniques, specialized molding technology, defects, and troubleshooting solutions. Below are some of the molds we made before.

Plastic mold structure

Basically, there are two main parts in the plastic injection mold structure: the mold cavity (fixing half) and the mold core (moving half).

The mold cavity (fixing half) is the mold part that forms the outer shape or contour of the plastic part being generated. The feeding system is located at this point as well.

This part of the mold is designed to define the full size and shape of the part. It is made by creating a reverse impression of the part to be molded. This uses high-precision CNC machines, wire cutting, electrode discharge machining, and other machining methods.

On the other hand, the injection mold core (moving half) side forms the inside features and shapes of the plastic part being generated. It creates the inside geometry of the part, such as bosses, holes, ribs, and other specs.

The mold core is made using reverse impressions of the part. This is done with high-precision CNC machining, wire cutting, and electrode machining. Other machining processes are also used.

The two parts of the plastic injection mold, the cavity and core, will be put together in the mold base. This mold base has cooling channels, ejector pins, guiding bushinges, runners, spure bushing, fastening screws, and other mechanisms. These mechanisms include lifters, sliders, and other special actions.

The material for the plastic mold structure depends on several factors. These include the type of plastic, the mold’s lifetime, and the budget. Usually, the mold base is made from S50 C. Sometimes, the A and B plates are made from 1.2311. Normal steel for the mold cavity and core will be P20, 1.2738H, S136H, NAK80, 1.3444, 1.3443, H13, etc.

Plastic injection molding needs a lot of precision and accuracy. The mold structure is key to making a high-quality finished product.

Overall, plastic mold is made of a variety of mold plates, inserts, blocks, sliders, lifters, and other metal components. A plastic injection mold has two main parts: the fixed half, called the cavity side, and the ejector half, known as the core side. These parts include several mold plates and inserts.

The cavity is made using inserts that fit the surrounding frame plates (A/B plates). This makes it easier to machine and replace.

plastic mold injection

The plastic injection mold cavity and core inserts are usually separate blocks. Some of these blocks are made of strong material. They are inserted into pocket plates. These pocket plates are machined into the A and B plates. A and B plates are also called cavity or core retainer plates.

The mold cavity and core inserts are in the pocket plate. They stand above the A/B plate by about 0.1 to 0.5 meters. When both the fix and moving halfes closed, leave a small space between the A and B plates. This will create an excellent fit for the cavity and core inserts.

The mold fixed half includes (cavity side):

a: Locating ring; b: basic plate (top plate); c: guide pin; d: insulation plate (for higher mold temperatures or hot runner mold); e: fasten screw; f: frame plate or A plate (cavity if made in solid); see below picture

fixing half-cavity side

Plastic mold ejection half includes (moving half/core side):

a: guide bushing; b: locating bushing; c: supporting bar; d: bottom plate; e: frame plate or B plate (core if made in solid); f: support plate; g: support bar; h: upper ejector plate; i: lower ejector plate.

moving half-core side

Plastic mold materials

There are many types of mold steels that can be used to make injection plastic molds, including aluminum, steel, brass, copper, and many others. The below materials are some of the common mold materials used in the making of plastic molds.

Basic steel, which we use to make plastic molds:

P20 (1.2311): This is a versatile, low-alloy mold steel with HRC 33-38, which is used a lot for the low- to middle-volume injection mold. This steel has good toughness and machinability. Some time used as A and B plates, and ejector plates as well.
H13 (1.2344, 1.2343) or S136: Those are excellent heat resistance steels, These steels are usually used for injection molds. They are needed for high production volumes and should last over 1 million shots. This is a very tough, low-hardness steel used for high-quality cavity and core requirements. The hardness of those steels can be hardened to HRC 48–60 degrees.
303 Stainless Steel: This material is known for its corrosion resistance and machinability. It’s suitable for molds used in less demanding applications.
420 Stainless Steel: This type of steel is harder and more wear-resistant than 303 stainless steel. It is used for molds where abrasion is a problem.
Aluminum Alloys: Some aluminum alloys are used for prototype molds due to their lightweight nature and good thermal conductivity. The normally used aluminum alloys are 7075 and 6061.
Beryllium Copper Alloys: These alloys, such as C17200 and MoldMAX, exhibit high thermal conductivity and excellent corrosion resistance. They are used in molds that require rapid heat removal, especially for some of the deep ribs, which are not possible to add a cooling channel to or are not easy to cool during molding.
718H (1.2738H) and 2738HH: Those are pre-hardened steels that have a hardness of HRC 28–40, which provides moderately high hardness and good machinability. It is used primarily for cavities and cores, as well as stripper plates. The mold life of those steels is around 0.5 million shots or more.

When selecting the steel for a plastic mold, you may wonder which material you should use. Then, you need to think about some factors, such as the type of plastic material being molded, the expected production volume, the required mold life, and cost considerations. Additionally, the surface finish is also an important factor in selecting the right mold material. When you have a project that requires plastic mold, find professional mold manufacturers in China that will solve your issues quickly, correctly, and at a at a competitive price.

What Is Plastic Molding Technology?

Plastic molding technology is the process of pouring liquid plastic into a mould or die cavity so that it hardens into a customized shape. These plastic molds can be used for a wide range of purposes. and it is a cost-effective process to produce millions of uniform-shaped plastic products.

There are typically five types of molds: compression moulding, extrusion moulding, injection moulding, blow moulding, and rotational moulding. We look at the details pertaining to each of these techniques so that you can decide which one will be the most successful for you to use.

Extrusion moulding

With extrusion molding, warm, melted plastic is pressed via a shaped hole to make a lengthy, shaped plastic part. This customizable shape that the liquid plastic gets pressed into is known as a die. This die is custom-made for the particular outcome that is wanted. It is almost like pressing dough through a press to make cookie-shaped cookies.

Compression moulding

This technique involves liquid plastic being poured into a warmed mould and then being compressed to form the desired shape. The high temperature of the full process ensures the best strength in the end product. The process is finished off by chilling the liquid plastic so that it keeps it from being trimmed and removed from the mould.

Blow moulding

With blow moulding, the custom plastic parts come out thin-walled and hollow. This technique is perfect for when the plastic part has to have a uniform wall thickness. This is extremely similar to the process of glass blowing.

Injection moulding

Injection moulding is quite similar to extrusion moulding. The difference here is that with injection moulding, the melted plastic is injected straight into a custom mould. The injection is done under high pressure so that the mould is packed with a powerful force. As with the other technique, after the mould is packed, the plastic is chilled to keep its new shape, then the mould is opened and the ejector system is used to eject the part out of the mold cavity, then the next cycle continues.

Rotational moulding

Also sometimes known as rotomoulding, this technique involves the liquid or resin being placed inside the mould and then being rotated at high speeds. The liquid then evenly covers the full surface of the mould to create a hollowed part with all the walls evenly thick. After the mould is chilled and the liquid plastic has taken on its fresh form, it is taken out of the mould.

The future of plastic injection molds

The industry of making plastic parts continues to grow thanks to the latest ideas and processes. These creative plastic injection moulding techniques give manufacturers and businesses new ways to mass-produce plastic parts. Here are some new innovations in plastic injection molding that may help your business and make production more efficient.

Micro-injection molding

As technology advances, our equipment and devices grow smaller for easier storage and handling. Many firms and industries keep innovating by creating new designs every year with more compact dimensions. Little plastics are famous in many fields, and using micro-injection molding is the best way to fulfill that need.

The phone and computer industries benefit from micro-injection molding since they use smaller plastic molds for newer phones and computer gadgets. The medical field also uses small medical devices for patients, such as portable IV pumps.

Injection transfer molding

Transfer molding process process involves of making similar injection-molded items simultaneously. Injection transfer molding takes it a step further by using the typical injection molding process and a plunger to press the resin into two or more molds.

The mold would cool simultaneously and eject for a quicker rate of production. This process gives the extra benefit of creating a uniform look across different molded items, such as plastic tube plugs.

Structural foam molding

A big innovation for injection molding is structural foam molding. This process gathers injection molding and gas-assisted injection molding by creating foam comprised of gas-like nitrogen and plastic resin. The combination turns into foam upon injection and expands. The result is an interior of foam and a shell of hard plastic material.

This foam combination makes it easier to make hard shapes and reach small portions of the mold. Plus, it creates powerful plastic. The inside of the plastic is hollow, while the exterior is powerful and detailed, depending on the mould.

Gas-assisted injection molding

Certain injection molds have hard designs and little space to fill. These little spaces make molding a full plastic piece hard since the resin may not reach it. Gas-assisted injection molding makes sure that resin reaches the small portions of the mould by injecting pressurized gas into the fluid while the resin cools.

The gas will release after chilling finishes, and the part will eject from the mold. This innovation in plastic injection moulding is a remarkable way to make hard plastic parts and make sure the plastic surface is powerful since the gas causes it to expand.

What type of materials are used in plastic molding technology

Plastic injection molding is compatible with lots of plastic materials, so its products are common in every industry and household. It is virtually impossible to cover all of them in one write-up. We have hand-picked the most famous ones.

Acrylic (PMMA)

Poly, better known as acrylic, is a thermoplastic material that has perfect mechanical strength, is lightweight, and has a clear, view-through look. Although not ductile, it has the best shatter resistance.

Additionally, one of its largest strengths is its ease of mechinability. After injection molding, acrylic parts are easy to finish and alter. go to PMMA injection molding to lear more.

PMMA has a few issues worth noting. Firstly, it is prone to scratching, which not only affects its clarity but also its full look. Additionally, PMMA has a tendency to accumulate greases and oils, further impacting its surface and clarity properties. Lastly, it exhibits bad performance in high-temperature conditions.

Acrylonitrile Butadiene Styrene (ABS)

ABS is one of the most famous injection molding materials. It has the best toughness and strength, chemical resistance, impact resistance, oils, and bases. It is fully opaque and can be injected-molded in many colors. On top of this, ABS is pretty cheap compared to other plastic injection molding materials on this list. learn more about ABS injection molding.

abs platics

Polycarbonate (PC)

PC has remarkable toughness, impact resistance, and shatter resistance. It has a transparent look. Additionally, it has the desirable standard of maintaining its mechanical features and looking for a wide temperature range. Thus, it runs well in high-temperature atmospheres.

It does have remarkable optical clarity, oftentimes better than glass. This makes it a very famous injection molding material for producing helmet visors, goggles, and protective machine shields. learn more about polycarbonate injection molding.

Polystyrene (PS)

PS is one of the few injection molding materials that is very famous. It is amazingly lightweight, has chemical reactions, resists moisture, and is very perfect for injection molding due to its uniform thermal shrinkage inside the mold.

PS is used to make items like appliances, toys, containers, etc. It also enjoys a unique position in the medical equipment industry as it does not degrade with gamma radiation, the initial technique to sterilize medical equipment. Thus, equipment like culture kits and Petri dishes is injection molded with PS. check more about PS injection molding.

Thermoplastic Elastomer (TPE)

TPE stands out among injection molding materials in the sense that it is a plastic-rubber blend. It gathers the benefits of both materials. It is flexible, can be stretched to strong, long lengths, and is recyclable.

Additionally, its big benefit is that it’s affordable among most rubber alternatives. Lear more about TPE injection molding.

It is, anyway, not perfect for use in high temperatures as it loses some of its material features. Additionally, it should not be stretched too much for too long, as it is susceptible to creep.

**What is the cost of plastic molds and plastic injection molding products?**

The cost of injection plastic molds and the cost of injection molding products can vary greatly depending on a number of factors, including the size and complexity of the mold, the type of plastic being used, the production volume, and the lead time for production.

These elements, as well as any additional costs for finishing, packaging, and shipping, have an impact on the price of the finished plastic injection molding product. It’s important to work closely with a manufacturer to understand all the costs involved and to get a clear estimate before beginning production.

Below, we will give you some guides on how to get a plastic mold price and a plastic molding price from your mold supplier.

plastic mold

1. How do I get a price for export plastic mold or tooling?

What is an export plastic mold? Which means you will buy the mold only; once the mold is completely finished and ready for massive production, you will take the mold back to your country or your specified manufacturer to mold the parts.

To get a price for export injection plastic mould, there are a few things that you are going to provide to your mould supplier. In order to make sure that you have given the manufacturer all of the information that they need to check the price accurately, below are some key points for mold price estimating. This is the most important information for export molds.

First of all, send the 3D drawing (STP or IGS format is better) to your mold suppliers. If you do not have the drawing, then you need to have some pictures of a sample with an approximate part size and show your supplier that part structure.
Second, you need to know how many shots of the mold you require, for example. 0.5 million shots of a lifetime or 1 million shots of a lifetime requirement, because those two requirements will cause a different price.
Third. The number of cavities: you need to specify how many cavities you need for your mold. Because one cavity and multiple cavities have totally different prices, the single cavity is cheaper than the multiple cavities mold. Because this will affect the mold price as well, if you are not sure, you can ask your supplier for some suggestions.
Forth. Is it a cold runner or a hot runner that you require for your mold? If a hot runner, what brand of hot runners? YUDO, INCOE, etc.—all of that information will have different prices, so you need to specify your requirements. You could still ask your mold supplier for some suggestions as well.

The above items are very import information to get tooling costs for export mold because all of the information will change the mold price. You are welcome to contact us if you need any support.

2. How to get a price for injection molding products

If you only need plastic molding parts, then you only need to tell us (or another plastic molding company) what the plastics will be, how many parts you need per time, what the surface requirements are, and the colors of the parts, and they will take care of the rest for you.

To get the cost of plastic injection molding products, it is much easier than getting the cost of exporting plastic mold. Simple steps as below make getting the plastic injection molding service price easy.

What will plastic be? for example, PP, PA66, ABS, PC, PMMA, PC/ABS, PEEK, PPS, etc.
What color do you require for your molding parts? There are lots of colors; you could take a color reference from pantone color.
What is the part surface requirement? Texture (graining or matte) or high polishing? The texture code could take references from VDI 3400.
3D part design (STP or IGS format file will be great for all of the companies); if you do not have a 3D part design, then send your sample pictures with part size and part weight, or an idea picture and explain it to us, and we can still get the price for you.
How many parts do you need per time?
Do you have any special function requirements?

With the above information, you will get a very competitive local mold/tooling cost (at least 40% lower than others) and unit injection molding cost from our side. That information is an important factor in estimating the plastic injection molding cost. Otherwise, any price will not have any references.

Plastic Molds, Molding Defects and Troubleshooting

The quality of the plastic mold is as important as the molding process. The plastic molding company you choose to help you with your product will eventually fight common molding issues. If you have high-quality plastic molds and a good plastic injection molding process, that will bring out the kind of results you expect from the end product.

Molding defects appear in the plastic mold; they can be attributed to the type of raw material used in the plastic injection moulding process, as well as the quality of the plastic mould, injection molding process skill, injection molding machine, etc.

Fortunately, by processing and preventing injection molding defects and using these approaches, mold manufacturers can create high-quality injection plastic molds. Once you have a high-quality mold, all other issues are easy to solve.

To make high-quality plastic mold, you must know how to solve this molding issue. Of course, find good mold suppliers; they will indeed solve this issue for you. Blow are some troubleshooting tips to solve the common molding defects, such as weld lines, etc., and ultimately get high-quality molded parts. There are some key defects that most happened during the mold manufacturing and molding process.

Flow marks

1. Flow Marks

This molding defect normally happens close to the gate area and the joint area (joint line or weld lines), which some people call flow lines, common in narrow sections of components and may be considered minor or serious defects depending on the part wall thickness and expected use.

In order to solve appearance flow line defects, during the molding process we need to increase the injection speed pressure, molten material temperature, and mold temperature. Increasing the gate size or changing the location of the gate is also helpful (last option). Below the right picture of flow mark defects, we increased the gate size to improve flow marks because the wall thickness was too thick (7mm).

Dull areas

2. Dull Areas

The most common is a dull concentric ring that can appear around a halo-like sprue. This usually occurs when the material flow is poor and the viscosity is high. Contrary to what many think, this is not a packaging defect, but a defect that occurs at the beginning of the billing cycle.
To minimize the possibility, the injection rate profile should be adjusted to ensure a uniform flow front speed throughout the filling phase.

It is also helpful to increase the back-pressure and barrel temperature of the screw to reduce dull surfaces resulting from lower melting temperatures. Increasing the mold temperature can also reduce this issue. But there must be a cooling system in the feeding area, especially if it is a hot-runner system; otherwise, it is not easy to solve this issue. For dull surfaces generated by design-related issues, this can be improved by reducing the radius between the part and the gate.

3. Burns Mark defects

The burn marks are defects often seen on plastic injection molding parts and look like a light yellow or black discoloration. This may be a minor defect due to excessive melting temperature, overheating in the presence of trapped air, and excessive injection speed.

Burn marks

Corrective actions for this type of burn mark issu: include reducing temperature, reducing cycle time, and reducing injection speed. Plastic mold manufacturers must also ensure that they have the proper gate size and gas vent gloves to resolve the trapped air problem that leads to this defect.

Because the air trap issue is the most common reason for this burn mark issue and could never be completely solved by adjusting the molding process, To mark defects, adding venting is the best solution, like increasing the venting grove, adding venting inserts to the deep ribs, etc.

4. Gloss difference defects

Gloss differences on textured surfaces tend to be more pronounced, and even if the surface texture is uniform, the gloss of the part may appear irregular. This is a problem that occurs when there is insufficient replication of the mold surface in some areas, and sometimes there are lots of ribs at the core side that can increase the gloss change issue on the textured surface.

It can be corrected by increasing the melting temperature, mold temperature, or holding pressure. The longer the holding time, the more likely the mold surface will be replicated accurately. If the design of the ribs caused this issue, to improve this issue, we can add some radius to all of the ribs. This will reduce the internal stress so that the textured surface can be improved as well.

5. Warping defects (deformation)

Plastic molding parts have warping defects that are normal, especially the long-size molding parts; distortion defects are hard to solve. Improving the mold design is the mean solution, but it is very limited to solving this issue by adjusting the parameters of the molding machine. The reasons and solutions to improve warping and distortion are listed below for reference.

Deformation issue

When the deformation is caused by the residual stress of the molding process, it can reduce the injection pressure and increase the mold temperature to improve it.
If the deformation caused by parts sticking can improve the ejection system or add more draft angle to solve this issue,.
If the warping defects are caused by a poor cooling channel or a poor cooling time, we can add more cooling channels and increase the cooling time to improve this. For example, we could add more cooling water to the deformation area to improve the warping defects, or we could use different mold temperatures for the cavity and core.
If the distortion issue caused part shrinkage, to solve this warping defect, we must adjust the mold design. Sometimes we need to measure the distortion size from the molding part and do the pre-deformation design on the part. The resin has a large shrinkage rate; usually, crystalline resin (such as POM, PA66, PP, PE, PET, etc.) has a higher warping rate than amorphous resin (such as PMMA, polyvinyl chloride (PVC), polystyrene (PS), ABS, AS, etc.).
Sometimes the gloss fiber material has more deformation issues as well. This is the hardest solution because you may need to adjust the part design two or three times to completely solve this issue, but this is the only way to solve the distortion issue.

6. Short shot defect

A short shot means not completely filling the mold; this molding defect normally happens at the end of the filling area, the end

Short shot defects. after adding venting inserts, the defect completely solved

of the rib, or some thin wall area. There are some reasons to cause this defect below.

The mold temperature is too low. When material fills in the mold cavity since the mold is too cold, the liquid material is not able to fill to the end of the part or some deeper ribs. An increase in mold temperature could solve this molding issue.
The material temperature is too low. This issue could also cause the short shot issue; this reason is similar to the issue of low mold temperature. To improve this issue, we can increase the melt temperature of the material to solve this molding defect.
The injection speed is too slow. The injection speed is directly related to the filling speed. If the injection speed is too low, the liquid material filling speed will be very slow, and the slow flow material will be easy to cold. This will cause the material to get cold in advance. To solve this issue, we could increase the injection speed, injection pressure, and holding pressure.
Venting issue. This is the most common molding defect we meet during the mold trial; all other defects could be solved by adjusting the molding parameter. If short-shot issues are caused by a venting issue, the best solution is to find a way to release the air out of the cavity. Sometimes reducing the clamping force can help a little, but it is not able to completely solve these defects.
If the air is stuck in the cavity or in the dead-ending area (the end of the ribs, for example), the short-shot issue will happen in that area. To troubleshoot this issue, we need to increase the venting grooves on the parting line and add a venting insert to the dead-ending spot to guide the air out.

7. Sink mark: It is a sink mark on the molded part caused by unbalancing plastic material shrinking in the mold cavity. It looks like there is a lack of material in that sink area that does not match the part geometry. This issue happens to the thick wall area or lack of cooling system in the mold. The mean reason to have this sink mark issue is the uneven wall thickness on the part design.

If some ribs or some area have a thicker wall than the other place (rib thickness should be around 1/2–7/10 max of the mean wall), then this thicker area will be easy to have a sink mark issue. Below are some suggestions to improve this defect.7. Sink mark: It is a sink mark on the molded part caused by unbalancing plastic material shrinking in the mold cavity. It looks like there is a lack of material in that sink area that does not match the part geometry. This issue happens to the thick wall area or lack of cooling system in the mold. The mean reason to have this sink mark issue is the uneven wall thickness on the part design.

Sink mark

Change the gate location to be close to the thick wall.
Add more holding pressure and holding time, and inject more material into the mold cavity. When using this method, you need to double-check that the part dimension is still within the tolerance requirement.
Increase the cooling time and the cooling channels to improve this issue. Plastic shrinkage rate is normal. If the cooling time is too short and the part is still warm after the mold is opened, then the part shrinks quickly without any cooling system. This will make it easy to have a sink mark. Increase the cooling time until the plastic injection molding part completelycoolsl in the mold cavity, and this defect will be solved.
If the part design has a serious thick wall on some of the ribs or bosses, to solve this issue, we need to improve the part geometry and add some inserts to the thick area to reduce the wall thickness. This issue could be solved. For this unbalanced wall issue, we could use software to analyze it and prevent it in advance. Before mold manufacturing, we will make a fully DFM report and send it to our customers for approval. Below are sink mark analysis report samples.

Are you ready to start working on your new project and search for your plastic molding facotry? If yes, then let’s go. For your plastic molding project, finding a reliable Chinese mold company is more important. Because this will bring your market up very quickly, and you will win more profits on your project with less cost,

Today, over 80% of big companies are sourcing goods from China. Like the iPhone, some other famous companies buy things from China. So what are you worried about? If you are ready, then speed up to open your market immediately and share your profits.

SINCERE TECH is a one of top 10 plastic injection molding companies in China that offers all in one service worldwide, those service include products development and design, prototype, testing, PCB design and soldering, mold/die casting design and manufacutring, massive production, surface finish, certificate, assembly, final inspection, and packing, we have manufacutring comapny and compeletely goods assembly facotry. We guarantee you will be 100% happy with our service and quality.

We have a very professional technical team to handle your project very carefully and make the perfect plastic molds and parts for you. Some of our customers have moved the molds to our factory for troubleshooting since their current plastic mold supplier is not as professional as us. We can send you some of our current customers for you to verify our service, quality, and price.

Send us an email at info@plasticmold.net to get a price. We will never share your design with others. We are willing to sign an NDA to protect your project.

2023年1月30日/0 Comments/by admin

injection molding, plastic molding

The Future of Mold Making and Plastics

Mold Making and Plastics is injection molding process which is a simplistic and efficient manufacturing process that involves injecting heated material into a plastic injection mold to shape plastics or rubber.

Currently, plastic injection molding is used in several industries such as aerospace, packaging, and injection molding toys. The injection molding and plastics industry is consistently evolving owing to technological breakthroughs, market disruptions, and certain economic and social factors.

Significant Breakthroughs

Tool formation, sharpening, heat treating, metal machining, and drilling out the design were carried out by hand, requiring an enormous time commitment. Since humans performed almost the entire process manually, conformity issues became inevitable, with no two molds exhibiting similar properties.

However, with the advancement of technology, two mold-making techniques contributed immensely to the shift from manual to computer-assisted machining –

CNC Milling Machines

These machines initially assumed the form of 2D Bridgeport milling machines, which were integrated with CNC attachments. These machines took the market by storm and transformed the way toolmakers created parts since they offered swift processing speeds paired with greater accuracy and minimal manual oversight.

Modern-day CNC milling machines offer expeditious processing speeds while achieving high accuracy even when working with complex molds.

CAD Programs

CAD programs have had a crucial impact on the evolution of the mold-making industry by streamlining the process of mold designing. These programs enabled industry professionals to form 2D and later 3D renderings, which could be quickly and easily edited, tested, and altered.

The Future Scope of Injection Mold Making and Plastics

The injection molding industry has continued to thrive over the years and has exhibited massive potential for enhancements in terms of efficiency, such as creating direct-to-metal molds at a faster pace while staying within budget.

Here are some crucial industry trends that can potentially define the path of evolution of plastic mold making and plastics, injection molding, and plastics for years to come –

Composite Materials

Since 2020, composite materials have gained momentum as one of the leading trends in the aerospace and automotive industries. A composite substance is a heterogeneous blend of two or more materials performed to obtain a stronger end product.

Composites are considerably stronger despite being lightweight than high-performance substances such as steel. Such properties make them an ideal choice for aerospace, automotive, and construction industries.

Composites are flexible, durable, and cost-efficient substitutes for the materials used for injection molding and mold making. In the upcoming years, composite materials will make their way into the medical sector and manufacturing military-grade equipment.

Increased Automation

Implementing automation and software, advanced analytics, and machine learning in manufacturing processes is surging rapidly with the latest technological breakthroughs. Programming has become considerably simpler, which has led to minimized downtime, sped-up production cycles, and efficient maintenance.

Automation enables manufacturers and engineers to exercise a higher degree of control of the injection molding process. It can also help designers and product developers maintain a competitive edge in the market.

A form of automation called mold flow analysis is gaining traction in the manufacturing sector. It uses software to simulate the injection molding cycle and provide insights into the mold filling process. This simulation is notably effective when making alterations to the product design in the design phase. Mold flow analysis can also test for warpage, shrinkage, improper fill patterns, and more before prototyping.

If you run a small business and are operating on a budget, invest in a vertical mill as it is relatively cost-effective and offers decent levels of accuracy.

Sustainable Development

Manufacturing industries are shifting toward sustainability, and consequently, the plastics industry must also make a move in this direction. Eco-conscious buyers have grown in numbers, which has inspired manufacturing firms to make their operations more efficient and significantly trim down wastage.

The mold-making industry has devised ways of operating injection molding machines with greater efficiency to curtail power consumption, switch to sustainable power sources, use recycled raw materials, minimize material wastage, and more.

While sustainability is rapidly advancing, manufacturing firms must meet critical project specifications to ensure optimum quality parameters. This is because recycled products often fail to satisfy the physical and mechanical specifications of the final commodity.

Bioplastics

Bioplastics are a direct derivative of sustainable development as several manufacturers have begun exploring its benefits and implementation in injection molding and mold making.

Bioplastics are petroleum-based plastic substitutes derived from biomasses like sugarcane, corn, seaweed, and others. Bioplastics are unique since they exhibit biodegradability and carbon neutrality.

Manufacturing and packaging products using bioplastics can push mold-making firms towards being more eco-friendly and minimizing negative environmental impacts.

However, it is vital to note that bioplastics are not entirely pollution-free. Bioplastics often get mixed with non-recyclable polymers as a means to improve upon their strength. If these hybrid bioplastics end up in a conventional landfill, they can take about 100 years to decompose, which can be toxic to the environment.

Lightweight Alternatives

Manufacturers and consumers are on the lookout for lightweight products. In the aerospace and automotive sectors, lighter components lead to more mileage throughout the journey and efficient consumption of charge in batteries.

For medical device manufacturing, stents and joint replacements made using lightweight materials can significantly boost the patient’s recovery. Lightweight materials also cost less during transportation.

Final Words

The above-mentioned trends can help engineers and manufacturers achieve better results by minimizing the scope of error and time consumption. Besides the two breakthroughs, namely the CNC milling machines and the CAD programs, there has been a significant advancement in the plastic molding sector with the latest technology.

Some promising future trends include lightweight material substitutes, automation, and a commitment to sustainable manufacturing that will jolt up the mold-making industry.

About the Author:

Peter Jacobs is the Senior Director of Marketing at CNC Masters. He is actively involved in manufacturing processes and regularly contributes his insights to various blogs on CNC machining, 3D printing, rapid tooling, injection molding, metal casting, and manufacturing in general.

If you are looking for mould suppliers to make your plastic injection molding project, welcome to contact us. We are one of the top 10 plastic injection molding companies in China that offers custom plastic injection mold and moldings, die casting, CNC machining, part design, testing, prototyping, assembly, and delivery, all in one service here.

2022年6月11日/by admin

China mold, injection molding, Injection Molding China, Injection molds

Custom Injection Molding

What is Custom injection molding?

The first question that comes to mind on hearing is what is Custom injection molding?

Custom injection molding refers to the making of plastic parts for specific applications i.e. customizing the plastic injection components as per the customer’s requirements.

Customized injection molding parts

Injection molding is a process in which plastic pellets are melted and injected under high pressure into a mold cavity. The molded parts are then ejected, and the process repeated. The finished products can then be used as is, or as a component of other products. To do so requires an injection molding machine and tooling (often called a mold or die). The molding machine consists of a clamping unit to open and close the mold automatically, and an injection unit to heat and inject the material into the closed mold.

Injection molding utilizes very high pressures and typically the machine is hydraulic or, increasingly, electric. Tooling for production injection molding applications must be able to survive under high pressure and is made from steel or aluminum. The potential high cost of tooling often drives the economics of a plastic molding application. Injection molding is an effective way to make custom parts.

Bascially, most of injection molding parts are customized injection mold, because every single design need its own custom injection mold, onless you buy the ready parts from the market, otherwise you need to make your own custom injection mold for your customized design.

Injection Molding Process：Plastic Processing, Make Parts From Plastic Material

Finding the right source for your injection molded thermoplastic parts is as easy as selecting DONGGUAN SINCERE TECH CO.LTD. With SINERE TECH, you are guaranteed professional quality assurance standards, the latest in technological equipment, and innovative, cost-efficient manufacturing techniques.

Injection Molding Process: A Brief Description

There are three main components in the injection molding process. The injection apparatus itself which melts and then transmits the plastic, the mold, which is custom designed, and clamping to provide controlled pressure. The plastic mold is a specially designed tool with a base and one or more cavities that will eventually be filled with resin. The injection unit melts the plastic granules and then injects them into the mold by either a reciprocating screw or a ram injector.

The reciprocating screw offers the ability to inject smaller amounts of resin in the total shots, which is better for producing smaller parts. After injection, the mold is cooled constantly until the resin reaches a temperature that allows it to solidify.

Complications with Injection Molding

Injection molding complications are few and can be easily avoided by paying close attention to the design of the plastic mold, the process itself and caring for your equipment. Parts can be burned or scorched when the temperature is too high, which is sometimes caused by the length of the cycle time which may be too long. This causes the resin to overheat. Warping of parts happens when there is an uneven surface temperature for the molds.

Surface imperfections (commonly known as bubbles) happen when the melt temperature is too high, which causes the resin to break down and produce gas. This can also be caused by moisture in the resin. Another complication is incomplete cavity filling, which occurs when there isn’t enough resin released into the mold or if the injection speed is too slow, which results in the resin freezing.

Running a Custom Injection Molding Business

Custom molding business is a competitive business and to survive you should find your niche market. Most custom molders in business today have found a niche. Through experience, the molder became good at molding a particular type of part or at molding a particular kind of material, or in working in a specific segment of the marketplace. In other words, he acquired an expertise and stuck with it.

Thermoplastic injection molding is the most widely used of all plastic processing methods. Injection molding is a manufacturing technique for making parts from plastic material. Molten plastic is injected at high pressure into a mold, which is the inverse of the desired shape.

Thermoplastics are those which, once formed, can be heated and reformed over and over again.

PP injection molding

The mold is made from metal, usually either steel or aluminum, and precision-machined to form the features of the desired part. SINCERE TECH provides the highest quality economical plastic molds available today, with less moving parts to reduce maintenance and repair costs.

The injection molding machine reduces pelletized resins and coloring agents into a hot liquid. This slurry, or “melt”, is forced into a cooled mold under tremendous pressure. After the material solidifies, the mold is unclamped and a finished part is ejected.

An injection-molding machine performs the entire process of plastic molding. These machines serve to both heat the plastic material and form it. Using different molds the shape of the produced components may be changed.

Injection molding machines have two basic parts, the injection unit, which melts the plastic and then injects or moves it into the mold, and the clamping unit, which holds the mold shut during filling. The unit clamps the mold in a closed position during injection, opens the mold after cooling, and ejects the finished part.

Custom Injection Molded Plastic Parts:

High-Quality Parts, Guaranteed to Specification, Extended Warranty, Retain Mold Integrity, Advanced Design, Quality Assurance

Finding the right source for your custom molded plastic products is as easy as selecting https://www.plasticmold.net/. One of top 10 mold manufacturers in China that services custom injection mold and plastic molded parts to the world.

With SINCERE TECH, you are guaranteed professional quality assurance standards, the latest in technological equipment, and innovative, cost-efficient manufacturing techniques.

Custom Injection Molding Parts: SINCERE TECCH’s Advantage

The injection molding process offers the lowest piece prices available, but tooling (plastic mold making) prices are generally the highest. That is why we need to make all of the molds in-house to create top quality plastic mold and the lowest price for our customers, our mold cost as low as $500. contact to get price for your own custom injection mold.

And they stand behind their word. They offer their customers the option of joining their Extended Warranty Program guaranteeing the plastic mold we design and builds for you will retain its integrity throughout a specific number of cycles, if we store the molds for you we will do the free mold maintenance for you.

injection molded plastic parts

For more information, see the home page.

Customized Injection Molded Applications

Injection molding is widely used for manufacturing a variety of parts, from the smallest component to entire body panels of cars. It is the most common method of production, with some commonly made items including bottle caps and outdoor furniture.

We have the ability to produce a wide variety of custom injection molding parts and components, for industries of all types, including:

Connectors
Wire Shields
Vials
Cases
Switches
Housings
Face Plates
Toys
Bezels
Push Buttons
Knobs
Light Pipes
Shields
Computer Peripherals
Phone Parts
Gears
Typewriter Parts
Window Lift Parts

Fuse Blocks
Wedges
Trim Plates
DVD Brackets
Faucet Extrusions
A / C Vents
Gear Shift Knobs
Tail Lamp Sockets
Blood Testers
Boat Parts
Name Plates
Buckles
Bottle Ties
Component Boxes

Spools
Bobbins
Seat Belt Parts
Spacers
Lenses
Vents
Clips
Flower Pot Bases
Actuators
Radiator Tops
Junction
Boxes
Motor Housings
Key Fobs
Cosmetic Packaging

To provide the best process for your project, you are welcome to send us email, we will offer you the best solution for your project.

2021年4月23日/by admin

China mold, Injection Mold Maker, injection molding, Injection molds, injection moulding, plastic injection molding, plastic mold, Plastic mold china, plastic molding

Injection Mold Maker

2021年4月23日/by admin

plastic injection mold, Plastic Injection Moulding China, plastic molding service

How To Buy Plastic Injection Mold and Molding Parts From China

China has become a major destination for Plastic Injection Mold and molding parts service. Lower prices are the primary incentives for many foreign buyers. The majority of foreign buyers find challenges sourcing plastic injection molding from China. The major strains are on how to buy, how to evaluate quality, or how to identify a reliable source.

Many things go wrong in case of compromise in the purchase process. For example, delayed delivery, frauds, low quality, weakness of communication (both on language and technical), and other problems may be encountered. To avoid such frustrations, the following is a process of how a buyer would purchase plastic injection molding from China. Hope this could help you find your best suitable supplier

Identify a Reliable Plastic Molding Manufacturer

Currently, there are many mold manufacturing companies in China. You need to determine which supplier is reliable. Some of the factors to consider include, mold price, quality, quantity, accessory standard, communication, lead times, and the mold design, among other factors.
Using the World Wide Web, you can easily find a wide range of plastic molding suppliers from the internet, sourcing agents, and trade shows, etc.

It is important to contact several suppliers before making a decision on a suitable supplier.

Evaluate the Various Mold/Molding Manufacturers

Conducting market research on the various plastic molding manufacturers helps to find a suitable fit for the business. So how can one evaluate the Chinese mold makers to identify a reliable source?
Sending inquiries helps the evaluation process. You should focus on asking questions that evaluate the core competence of the plastic molding companies.
A good supplier is one that shows interest in your projects, has effective communication, knowledgeable, detail-minded, and honest. The evaluation should target to identify the salient attributes of the supplier, for example, what is advantages do they have, is it suitable for your project? Have they done any similar projects like yours? All of the information will help to make your project smoothly or not.

Information Verification

Not all manufacturers are who they say they are. The customer should be able to verify the plastic molding manufacturer. Some of the information that can be verified include:

Type of mold parting line
The type of ejection modes, whether pins are used and the particular locations,
Surface requirement on the visible surface
The location and type of gates

Such information helps to verify the mold designs and product appearance. the most important thing is basing on this discussing with each other you will know their communication and technology ability. A supplier that verifies the information and offers samples is reliable.

Analysis of Production Issues that may Arise

A good plastic molding supplier should communicate the issues in advance and concerns that may arise in the production process, and actions are taken to address the issue. A good injection mold company should analyze the current design and offer rational recommendations, we call this DFM report.
Some of the important questions that help identify some of the issues include;

Have you produced similar molds/products before?
What were the challenges encountered?
Can you send your quality control inspection report?
How do you address the issues that arise?
Do you offer compensation for compromises?

With all the information, you should already have identified which Chinese molding company to source from.

Firm/Supplier Site Visit

Depending on the quantity of supply sourced, visiting the supplier may be important. For large quantities of plastic molding service, traveling to China should be a basic step. The objective is to analyze samples and evaluate the reliability of the supplier.

Go to their plastic molding company on site to communicate with them face to face, then you will know how the technical skill, English ability, etc. But mostly not always have time to check their mold factory, so we suggest you may ask for a skype video shows if you have no time to visit them.

At SINCERE TECH will take Skype video meeting to show you around our plastic mold and molding factory if you have no time to visit our factory, our sales and project manager speak good English and have the professional technical skill, you will know this during the video shows. if you are interested in our service, you are welcome to contact us.

injection moulding company

Maker A Contract

Importing products from China and Asian nations can be risky and complicated. Contracts are antidotes against the common mistakes and issues that may arise. It is essential for buyers to get into a contract for the following reasons;

To maintain clarity on product specifications and avoid misunderstandings. The specifications of the product can be easily lost in Skype or mail communication.
Compensation terms help suppliers to think twice about compromise.
Contracts help to communicate on how severe your business is
It helps to avoid delays

The first time you work with a China plastic injection molding company (same to work with your local supplier), you should always make agreements on contracts to avoid scams and fraud. Suppliers who default the negotiations should be responsible for making refunds and necessary compensations.

7.Payment and Delivery

Based on the set agreement, the amount can be paid by one time or two times ( maybe more times). The payment method depends on the agreed strategy. Some companies make payments via Paypal, Skrill, Payoneer, Western Union, Cheque, or other policies. Our standard payment term is T/T wire transfer. If the small amount. PayPal is still available, this is method is normally working for all of the companies in China, especially for custom plastic molding manufacturing service.

Concluding Thoughts

Buying plastic molding from China can be challenging. However, if you follow the seven steps, the process is easy and with no compromise. when you find your reliable partner from China, then your business will be increased rapidly, this is verified by lots of companies like Apple, and other car companies (over 80% of car companies buy their auto car molds from China), etc.

Doing online businesses have fraudulent operations. You should be cautious on the approach of doing business online to avoid frustrations, lots of company doing online business with China and successful to the business, also some of the customers had issues when doing business with Chinese mold manufacturers, or even have issues with your local supplier as well, do you agree? The above steps could help you avoid this issue and the success of your business.

Need any plastic injection mold/molding companies from China? Contact us now, you will find out we are your best partner in China. Welcome to talk with us on any questions.

2019年7月2日/by admin

China mold, custom plastic mold, Custom Plastic Packaging Containers, Injection molds, plastic food containers, plastic mold, plastic molding company

How to Buy Custom Plastic Packaging Containers

What is Plastic Packaging Containers

Plastic packaging containers are containers that are used to hold something; whether that be food, clothing, or anything else; that are made out of plastic. Many companies use different plastic packaging containers, such as pharmaceutical companies. the food industry, the healthcare industry, the pet industry, and many others.

Plastic packaging containers can be found at most stores you shop at, but what about custom plastic packaging containers? Where would you find an odd-shaped container that you need for a specific project? What if you need 1000 of that same odd-shaped container for your business? Do you want your company logo on those containers? There are many aspects to look at when choosing containers, depending on what you are looking for. For example, if you are looking for clear plastic packaging containers for food, you wouldn’t want containers that contain BPA. go to custom plastic food storage containers pageto know more information.

Step to order your own Plastic Packaging Containers

The first step in ordering your custom plastic packaging containers would be to determine the size and shape of the container that you need. If you need a smaller container, or a basic plastic mold then you are looking at spending less money. Whereas if you are wanting a plastic packaging container in an odd shape, you will be spending a little more.

Next, you would determine what quality of plastic you need the containers to be. You would need to look at different aspects for this, such as what products are going in the containers, how the custom plastic packaging containers are going to be stored, and what climate the containers will be stored in. This is an important step because you don’t want to order a container that is not going to fit your specific needs.

After you have determined the size, shape, and quality of your plastic packaging container, you will need to decide what you want the product to look like. This means deciding whether you want custom colors or extra design. Then, you will need to determine how many containers you need. If you need the containers for a wedding, for example, you wouldn’t need as many as you would for a business that needs containers for a product. all of those process we called part design and delvelopment.

In addition, you would determine how quickly you need the product. If you need a custom product as soon as possible, you would want to look at companies with in house engineers, that are located in your country. However, if you can wait some time, you could be saving money if you went for a larger manufacture overseas, like finf a plastic molding company to handle your custom plastic mold and massive products production.

Furthermore, you will need to decide whether you need a label on the containers. This is a pretty simple step, but if it’s missed, you could end up with thousands of containers that were ordered incorrectly.

Finally, you would choose the business that you want to order from, let them know your vision, and wait for your arrival. Choosing a business can be a difficult decision, and can be time consuming because you don’t want to make a mistake when mass producing something important. As long as you follow these steps, you are headed in the right direction to getting the custom plastic packaging containers you need.

Are you looking for Plastic Packaging Container mold manufacturer, storage box mold supplier, storage container molding manufacturing companies from China? You are welcome to contact solve your issue.

Sincere Tech is the professional plastic storage container mold manufacturer and storage box mold supplier in china. We offer custom plastic storage container mold, plastic food storage containers mold fro small to big, we can make storage box molds for you based on your design or the samples.

During the last few years, we have been exported different size PP storage container moulds to Turkey, South Africa, Canda, Italy, American, Mexico, Brazil, and so on.
We have accumulated well knowledge about Plastic Packaging Container Mold design and storage container mold tooling. For PP transparent storage container mold, we usually suggest DIN 1.2738H for good polishing and long-time polishing result, and also a long mold lifetime with high-pressure injection molding.

Plastic Food Storage Containers utility

Most of us have a microwave in-house, that’s why choosing plastic food containers that can be used safely in the microwave is very important. Be sure to read the product description before you make the buying decision. You should also select the containers that can be washed with dishwasher as well as can be used safely in the freezer, refrigerator.

One of the most important features of custom plastic food storage containers is the ability to isolate the food completely from the outside environment. If your container is not hermetic, the odour from inside can leak and absorb into other foods. This is, in turn, will make other foods lose their quality.

One more tip that you should keep in mind when choosing plastic food storage containers is always going for the ones that have a clear colour. Don’t be trapped by the colourful items. They may be made from recycled plastic that will do more harm than good to your health. You can also smell the containers to know roughly the quality of the plastic food storage containers. Good containers will have little to no odour while items which were made from recycled plastic will have strange, unpleasant smells.

Glass food storage containers utility

For some people, glass food storage containers are their personal favourite as many features that no other types of food containers can have. Glass food storage containers don’t turn opaque over time, glass doesn’t absorb odour. In addition, the glass container is very safe. You don’t have to worry about unethical manufacturers use low-quality material to make the product as in plastic containers. Such benefits explain why while plastic food storage containers are so popular, glass food containers still have a good place in the market.

When choosing glass food containers, you need to select good brands. After that, you should focus on durability. As a matter of fact, glass can easily be broken, this will be very dangerous. However, with the development of material industry, there are now many glass containers have great durability, but compare to plastic food storage containers, plastic food box is still more convenient and safer than glass container, and you will never get broken, this is the main reason that is why plastics food box has more market then glass food containers,

Do you need any Custom plastic storage containers for your business needs, we are a professional plastic mold maker and molding company, we will provide you with the best FDA plastics for any of your custom plastic food storage containers, we never ever save any penny of cost on this material, 100% pure FDA plastics is our minimum requirement for this such of plastic food container box.

When you partner with Sincere Tech as your preferred China mold maker, you can expect the highest level of professionalism, expertise, and innovation. We are dedicated to helping you bring your ideas to life, delivering superior products that excel in performance, durability, and cost-effectiveness.

Our expanded capabilities include:

Rapid Prototyping: We offer rapid prototyping services (3D printing or CNC machining prototypes) to quickly transform your rough design into useable prototypes, and testing, redesign suggestion etc.
Precision CNC machining: Our advanced CNC machines enable us to create high-quality mold components with tight tolerances, this will ensure currently tolerance and precision in the injection-molded products.
Overmolding: We make overmolding for some handle tools, some of overmoling are used in the die casting molds as well, contact for quote for your overmolding project.
Insert Molding: insert molding is similar to overmolding but will be little different, insert molding normally use metal parts as substrate and overmolding use plastic part as substrate.
Two-Shot Molding: With two-shot molding, we can produce complex, multi-material components in a single operation, reducing assembly requirements and enhancing design possibilities. Two shot molding is more complex than insert molding or overmolding, and two shot molding requires two shot injection molding machine.
Value-Added Services: In addition to injection molding, die casting, and machining, we offer a range of value-added services, including product silk-screen, painting, assembly, testing, certificate, packaging, and logistics support, streamlining your supply chain and reducing costs.

Partner with Sincere Tech China mold maker for your custom Plastic Packaging Containers, die casting and machining needs, we will offer you the best quality and fast lead time, contact us for quote in 24 hours.

2019年6月24日/by admin

Injection molds, plastic injection mold, plastic injection molding, plastic mold

Plastic Injection Mold

Plastic injection mold and molding manufacturing company in China! Here you find information about custom plastic injection mold and molding processes, techniques, and specialized molding technology so that you keep yourself informed with the latest trends and technology.

We offer 30% savings for mold manufacturing and molding production services.

We have over 15 years of experience in plastic injection mold and molding manufacturing services, plus fluent technical English communication (technical English communication is very important when working with foreign customers).

We 100% guarantee that your project will be successful. You will be impressed and satisfied with our quality, price, and services.

Send us your requirements for a quotation; you will not lose anything but our competitive price for reference.

We are willing to sign an NDA document to protect your project, and we could send you our customer’s information so that you can verify our quality and services.

What is a plastic injection mold?

A plastic injection mold is made of metal steel that has been made with a hollow base apart, as sharp as you want, and later filled with a liquid or any other material that can be used to make your plastic products, which will last millions of cycles. Some of the materials that can be poured into the hollow space of the steel include plastic, metal, glass, and even ceramic materials. The liquid is allowed to solidify, and the block is broken to retrieve the mold that has acquired the shape of the block. A plastic mold is a custom mold that is used for making custom injection molding parts.

Plastic mold technology

Plastic mold technology is by far the most popular method to manufacture plastic parts in the world today. This process is used for everything from inexpensive commercial plastic products, like disposable eating utensils and toys, to severe environments and highly stressed technical components, like critical parts for the automotive and aerospace industries.

You’ll find extensive use of injection-molded plastic parts in the electronics world for things like enclosures for cell phones, computers, televisions, and the like, as well as in the medical world, where things like syringe bodies, breathing apparatus, and a wide range of other life-saving devices are employed. No other process has come to dominate modern manufacturing as much as plastic molding, and its use increases every year.

Recently, critical steering components for General Motors cars and trucks were changed from stamped and machined steel parts to a plastic-molded assembly, resulting in a lighter part at a lower cost, quieter, and more reliable.

What is Plastic Injection Molding

Plastic injection molding or injection molding is the process of heating thermoplastic resin to a liquid, then shooting it under high pressure into a mold cavity that is the negative image of the desired part, allowing it to cool, and then opening the mold to allow the completed part to be ejected out of the mold.

In most cases, features can be built into the plastic mold cavity to give the part everything it will need when finished so that no other operations are needed once the part comes out of the mold. Textures, or high polishes, markings, screw holes, lens shapes, and any other features needed in the finished part can be built into the mold, so the finished part automatically has these features incorporated.

The advantages of plastic molding

The beauty of plastic molding is that many parts, even millions, can be made in exactly the same way and will come out the same no matter what. Each piece will have identical features, the same dimensions, and the same physical properties. It is the ideal way to make high volumes because of this consistency. Properly maintained, injection molds can last decades, making millions of parts per year. Properly set up and controlled, the 20 millionth part will be identical to the first part in every measurable way. No other manufacturing process has the potential to operate at this level of consistency.

Multiple cavities of each part can be built into the plastic injection mold tool, so that each time the mold opens, you can make 16 or 32 or 48 or some other multiple of parts for each cycle of the injection molding machine to really increase the production rate and greatly decrease the cost of making a part.

In some cases, several different parts—for instance, a right- and left-hand version of an enclosure—can be made in a single mold to reduce the number of machine cycles required to make multiple parts of an assembly, increasing production and lowering the injection molding cost. Injection molding also offers flexibility not possible with any of the other manufacturing processes.

Injection molding also offers one of the lowest scrap rates of any other manufacturing process as well. Since no second operation is generally required, no material is cut off and thrown away. It is possible to use a special technique to completely eliminate even the small pathways the plastic flows through to cut the material scrap rate to virtually zero, or often, any plastic removed in the process can be reused by pelletizing it and mixing it back into the fresh plastic resin in closely controlled proportions. These capabilities mean a higher percentage of the raw material becomes part of the finished part than in any other process. Plastic injection molding is highly efficient.

Sincere Tech has been one of the top 10 mold manufacturers in China since 2005, located in Changping, Dongguan City. Sicnere Tech offers the plastic injection mold and molding manufacturing service. The company has shown promising growth each year; today, it accumulates to over 30 million RMB.

What makes us a unique plastic injection mold manufacturer?

With so many others in the business, what is it that has made us this successful in all these years? Let us take a look at some features that make us unique and a preferred choice for our customers.

It all starts with the plastic injection mold/molding factory.

Our plastic mold company is clean; everything is well ordered and well managed. When it comes to the technology we use, we make sure that at Sincere Tech we use nothing but the most advanced and high-tech available, be it for software or hardware systems around the factory. It helps us take control of the quality of the plastic mold we produce. To make goo- quality molds and parts.

We use a high-speed FUNAC CNC machine that was imported straight from Japan and has over 24,000 rotation speeds. Moreover, we have two big CNC machines with 2-meter strokes and a full automatic three-coordinate measuring (CMM) machine to ensure that our processes are fast, efficient, and precise. That high-tech equipment, plus our professional team, helps us meet our targets.

Professional team

We have over 65 staff members in our factory, and each one is an expert in his field and fully qualified to handle the different aspects involved in the injection mold making processes. From producing to managing the business, the team has been carefully selected to allow growth and give our customers premium-quality products.

All the engineers on our team have a good command of the English language to ensure adequate technical communication and a rich experience in the project. Even if you are not good at plastic injection molds and part design, our team will lead you and think through every detail on your behalf. This will help your project go smoothly and successfully.

Various Plastic Molded products Available

When it comes to plastic injection molds and injection molding parts, we have qualifications in a lot of fields and are experts in each one of them. The molds and molding parts we produce are used by consumers in household appliances, industries, food packaging, electronics, automobiles, interior parts in cars, etc. Our team puts in the same amount of attention and hard work in each one of these molds to maintain our loyal customer base.

Customer satisfaction

We realize the importance of keeping our customers happy and thus never compromise on quality. Our plastic injection molds last a long lifetime and always meet every expectation our customers might have of them. The molds and molded products we make pass every test they are put through and are accepted by customers from all fields equally well.

Affordable Price

With the quality we provide, one might expect our plastic injection molds to cost a fortune, but this is not so. All our molds and molded parts are priced very strategically to have market-competitive prices. The quality we produce is available at reasonable rates, and this is what has our customers choosing us time after time.

Customer service

Unlike other brands, we do not forget our customers even after the plastic injection mold has been shipped to our customer side. We provide efficient customer care services, and our staff is always ready to help before, during, or even after the sales have been made.

For us, we are not only the suppliers to the customers. Being on their side, we make every possible effort to ensure customer satisfaction. This is made possible by maintaining transparency in a communication system and ensuring a quick response to all problems they encounter.

So, what are you waiting for? Get in contact with our team right away and have them offer you the best plastic injection molds and molding parts for your project. For us, you are important. Making your business successful is our goal.

Thank you for considering Sincere Tech as your partner for all your plastic injection molding needs. As a leading China mold-making company, we are committed to delivering top-quality plastic injection molds and related services to our customers.

Our experienced team of professionals is dedicated to providing the best possible solutions tailored to meet your specific needs and requirements. With a user-friendly interface, navigating our website to find the products and services you need is easy. We offer a wide range of services, including plastic mold, custom plastic injection molding, rapid prototyping, mold design, post-manufacturing, assembly, and delivery.

At Sincere Tech, we pride ourselves on working with our customers from start to finish, whether you are in need of a single prototype or a large-scale production run. Our team is always available to answer any questions you may have and offer guidance and support throughout the process.

We are confident that our service, expertise, and resources will take your business to the next level. So, why wait? Contact us today if you are looking for reliable, affordable, and high-quality mold suppliers. We look forward to working with you!

2019年6月4日/by admin

Injection Mold Maker, Injection molds, plastic mold, plastic mold manufacturer

How To Make Precision Insert Pins

I am trying to find out how large manufacturing companies grind precision core pins. As a plastic mold maker, I am aware of the manual methods using a surface grinder and Harig type spin fixture and am also familiar with the Ded-Tru machine.

However, these methods are exceedingly slow, albeit quite precise. There just has to be some kind of OD grinder, tool grinder, centerless grinder or special CNC tool grinder that can grind complex mold core pins accurately and with an excellent finish.

But in today, normally the mold maker is not making any pins or insert pins by themselves, you can find some precision components company who specializes in making high precision components, like insert pins and some small inserts, you only need to send them the 3D, 2D drawing and mark the tolerance for each dimension, then they will do the rest quickly and accurately.

But for some other mold components, you may have to do this by yourself.

Another common material for various injection mold components is a beryllium copper alloy also called Mold Max. It has excellent heat transfer qualities, can be polished and is also pre-hardened. All this combines to make it the material of choice for things such as core pins.

However, is beryllium copper/Mold Max safe?

In my experience is depending on which area of mold components you are using for? I made 64 cavities molds which the parts have some small ribs, the customer was a requirement with MoldMax for better cooling, as you know sixth four core inserts made by Mold Max, that is not cheap, but after the second time of mold trial the small ribs start to break, not only one or two but around 10 inserts had broken done, base on my experience on this material, for some small ribs it is not good option to use Beryllium copper, if some deep ribs but have much more space, then that will be better option to use this material, because you will get good cooling to save cycle time.

This covers the topic in detail and my conclusion is that it is basically depending on the part design, Is you have a plastic mold project that may need this service, you are welcome to send me your drawing, we will suggest you some good option for you to make choices this could be safer for your project.

2019年5月20日/by admin

cold runner mold, High Gloss Plastic Molding Parts, Injection Molded Plastic, Injection molds, plastic mold, plastic mold polishing, plastic molded parts, plastic mould

Plastic mold polishing

2019年4月26日/by admin

China mold, Injection molds, Insert molding, plastic injection mold, plastic mold, Plastic mold china, Plastic Molding Parts Manufacturing

Plastic Injection Mold Press

What is plastic injection mold press

Plastic injection mold press is simple called press. Plastic injection mold press holds the plastic mold in which the components are shaped. Mold press is rated by tonnage, which expresses the amount of clamping force that the machine can generate. This pressure keeps the mold closed during the injection process. Tonnage can vary from less than 5 tons and big than 5000 tons, with the higher figures used in comparatively few manufacturing operations.

Plastic injection mold press can fasten the plastic molds in either a horizontal or vertical position. The majority is horizontally oriented, but vertical machines are used in some niche applications such as insert molding ( click here to know more about insert molding) allowing the machine to take advantage of gravity.

Plastic injection mold press is used to create many things such as milk cartons, packaging, bottle caps, automotive dashboards, pocket combs, and most other plastic products available today. It is known that injection molding is the most common method of part manufacturing. It is ideal for producing high volumes of the same object. Go to injection molding page to know more about injection moulding.

Basic Components of a Plastic Injection Mold Press

The basic components of a Plastic Injection Mold Press are integral to its functionality, contributing to the precision and efficiency of the injection molding process. Sincere Tech China Mold Maker, a prominent player in the industry, understands the significance of each component in delivering top-notch manufacturing solutions. Let’s delve into the essential elements that constitute a Plastic Injection Mold Press:

1. Injection Unit:

Hopper:
- The hopper serves as the reservoir for raw plastic material. Sincere Tech ensures that the hopper design facilitates efficient material loading and prevents contamination.
Barrel:
- Within the barrel, the plastic material is subjected to controlled heating and pressurization. Sincere Tech’s barrels are designed for optimal heat transfer and durability, ensuring uniform melting of the plastic.
Screw or Plunger:
- The screw or plunger is responsible for conveying the molten plastic material from the barrel to the mold. Sincere Tech’s precision-engineered screws and plungers ensure a consistent and reliable injection process.

2. Clamping Unit:

Mold:
- The mold defines the shape and features of the final product. Sincere Tech specializes in custom mold designs, tailored to the specific requirements of clients across diverse industries.
Clamping Mechanism:
- The clamping mechanism ensures that the mold remains securely closed during the injection process. Sincere Tech’s robust clamping systems guarantee stability and accuracy in the molding process.
Cooling System:
- Efficient temperature control is critical for the solidification of the plastic within the mold. Sincere Tech integrates advanced cooling systems to maintain precise temperature levels, contributing to the overall quality of the molded products.

These components work seamlessly together during the injection molding process, reflecting Sincere Tech’s commitment to excellence in every facet of Plastic Injection Mold Press technology. Their attention to detail in the design and manufacturing of these components ensures that clients receive reliable and high-performance machinery for their production needs.

Advantages of Plastic Injection Mold Press

Sincere Tech China Mold Maker’s Plastic Injection Mold Press technology comes with a multitude of advantages, positioning it as a preferred choice for manufacturers seeking precision, efficiency, and versatility. Here are the key advantages associated with Plastic Injection Mold Press:

1. High Precision and Accuracy:

Sincere Tech’s Plastic Injection Mold Press technology excels in producing intricate and complex designs with exceptional precision. The advanced control systems and precise engineering contribute to the consistent replication of detailed molds, meeting the strictest quality standards.

2. Efficient Production Rates:

The efficiency of Sincere Tech’s Plastic Injection Mold Press technology translates into high production rates. Rapid injection cycles, coupled with reliable and durable components, ensure that manufacturers can meet demanding production schedules and reduce time-to-market for their products.

3. Versatility in Material Usage:

Sincere Tech understands the importance of material flexibility in manufacturing. Their Plastic Injection Mold Press technology accommodates a wide range of materials, from traditional polymers to advanced engineering plastics. This versatility enables clients to choose the most suitable material for their specific application.

4. Reduced Material Waste:

Precision control over the injection process minimizes material waste. Sincere Tech’s technology ensures that the right amount of material is injected into the mold, reducing excess and optimizing resource utilization. This commitment to sustainability aligns with global environmental goals.

5. Cost-Effectiveness:

The efficiency and accuracy of Sincere Tech’s Plastic Injection Mold Press technology contribute to cost-effectiveness in manufacturing. Reduced waste, faster production cycles, and reliable operation result in overall cost savings for clients.

6. Scalability:

Whether dealing with small-scale production or large-volume manufacturing, Sincere Tech’s Plastic Injection Mold Press technology is scalable to meet varying production needs. This scalability is crucial for adapting to market demands and business growth.

7. Consistent Quality Control:

Sincere Tech places a strong emphasis on quality control throughout the manufacturing process. The precise control mechanisms in their Plastic Injection Mold Press technology ensure consistent product quality, minimizing defects and rejections.

8. Tailored Solutions for Diverse Industries:

Sincere Tech’s expertise allows them to provide tailored solutions for diverse industries, including automotive, consumer goods, medical devices, and packaging. Their understanding of industry-specific requirements ensures that clients receive customized solutions that align with their unique needs.

In essence, Sincere Tech China Mold Maker’s Plastic Injection Mold Press technology offers a comprehensive package of advantages, making it a reliable and efficient choice for manufacturers seeking excellence in plastic injection molding processes.

Types of Plastic Injection Mold Press

Sincere Tech China Mold Maker offers a range of Plastic Injection Mold Press technologies, each catering to specific needs and preferences. Here are the primary types of Plastic Injection Mold Press provided by Sincere Tech:

1. Hydraulic Injection Mold Press:

Description: Hydraulic injection mold presses utilize hydraulic systems to power the various components of the machine. These systems provide high force and are known for their robustness.
Advantages:
- High clamping force suitable for large molds.
- Versatility in handling a variety of materials.
- Reliable and durable, with lower maintenance requirements.

2. Electric Injection Mold Press:

Description: Electric injection mold presses rely on electric servo motors to drive the machine’s components. This type is appreciated for its precision, energy efficiency, and accuracy.
Advantages:
- Higher energy efficiency and reduced operating costs.
- Enhanced precision and control over the injection process.
- Quieter operation compared to hydraulic counterparts.

3. Hybrid Injection Mold Press:

Description: Hybrid injection mold presses combine hydraulic and electric systems to optimize performance. They often use electric motors for plasticizing and hydraulic systems for clamping.
Advantages:
- Balances the energy efficiency of electric systems with the power of hydraulic systems.
- Provides flexibility in adapting to different production requirements.
- Offers improved precision in injection molding processes.

Sincere Tech China Mold Maker excels in delivering these types of Plastic Injection Mold Press machines, ensuring that clients have the flexibility to choose the technology that best suits their specific production needs. The company’s commitment to innovation and customization enables them to stay at the forefront of the industry, meeting the evolving demands of various manufacturing sectors.

If you are a plastic mold manufacturing company that produces anything from plastic molding toys to car parts and you are not using Plastic injection mold press to produce your parts, you will spend too much money. Indeed, using Plastic injection mold press provides additional savings to manufacturers because plastic is less expensive than metal and manufacturers pay for fewer parts. As a result, they are widely used because of the high quality of the end product.

One of Plastic injection mold press you can choose in the market is Plastic Injection Molder (YS-1180). This machine has moving platen featuring box type bridge structure and full-connected rear high-rigidity mold platen. Through finite element analysis, it can prevent deforming of mold platen, resist against fatigue, have high repetition accuracy, distribute mold closing force uniformly, greatly increase mold’s service life and reduce injection molding cost.

Another option of Plastic injection mold press is HDT-200 200ton plastic injection molder. This machine comes in two series; HDT series and HDF series. The HDT machines’ clamping force is from 80 tons to 2200 tons and the shot weight is from 80g to 2kg. These machines have strong locking force and a very good injection precise also a stable performance etc.

Meanwhile, the HDF machines are a type of high-speed Plastic injection mold press. The machine’s cycle time is very short (2.6 seconds-3.6 seconds) with a high injection pressure (to be possible to reach 240MPA) and a high-speed injection (to be possible to reach 600MM/S). This machine can be used to produce the thin-wall products, especially the thin-wall snack boxes and containers (with the wall thickness of 0.4mm).

Or you can choose another option among other Plastic injection mold press available in the market. Just choose the one based on your needs and budget, and you will surely find the one you are looking for.

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2019年4月21日/by admin