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Injection molds

Stack Mold

Stack Molding: Everything You Should Know

Stack molding is an outright revolution within the injection molding industry because it boosts production speed. In stack molds, at least two or more compacted cavities mean that different parts are molded in one go to increase efficiency. But for now, what is stack molding, and how does it work, especially, when compared to its counterparts? In this article, we will define stack molding, a brief overview of its benefits as well as how it is quickly reshaping high-volume production is provided. Besides this, we will learn about the stack mold injection molding process including the materials, design guidelines, and everything in between.

What is Stack Injection Mold?

A stack injection mold has multiple parting lines, or “tiers” of cavities, produced by stacking more than one mold cavity over. Every level in the mold contains another set of cavities which simultaneously increases the overall output of the machines. It does not invest in additional tools or the real estate required to accommodate them. Compared with the ordinary mold which can only form a part in one plane, stack molds configured in the vertical plane to more than one plane making the part, hence having higher productivity.

How is stacked molding performed?

Here’s a step-by-step outline of how the stacked molding process is performed:

1. Mold Closing

The stack mold has a series of cavities, and they are in a standing position by arranging the Cavities in vertical order. The mold closes as the machine’s platen oscillates, so the cavity and core of each stage are aligned at the same time.

2. Injection of Material

After it is closed, molten plastic is injected into the mold cavities through a single sprue or hot runner. The material enters every cavity at every stage of the multiple-tiered mold. The layout of the hot-runner systems guarantees that the material will be uniformly distributed over all the cavity grades.

3. Cooling and Solidification

Once the molten plastic has entered the cavities it starts to cool and get solidified. Each level of the mold enables the part to cool at a time. So, the cycle time does not have to be extended because cooling can be done for each cavity set concurrently.

4. Mold Opening

When the polymer is sufficiently cooled a system opens the mold. Mold is intended to remove each level of the stack at a time. Some features guarantee that the cavities are open to facilitate easy and smooth removal of parts from the mold.

5. Ejection

The mold’s ejection system then throws away the solidified parts from the cavities leaving a cavity-free mold ready for the next cycle. The difference is that each level of the mold launches its parts all at once, thus achieving high turnover in one full cycle. Additional or more complex parts can be easily ejected using collapsible cores or special ejector systems.

6. Recycling the Process

But once ejected the mold closes again and goes for another round of operation until the cycle is complete. Since stacked molds incorporate more cavity levels, the manufacturers can make more parts per cycle. So, they can make them more efficient without calling for greater size or tonnage.

Suitable Material for Stack Mold Injection Molding

In particular, the right material is important for stack mold injection molding. The material should be flowable to ensure it enters all the spaces in a structure well. So, the common materials used include:

Material	Tensile Strength	Melting Point	Mold Shrinkage	Common Applications	Properties
Polypropylene (PP)	25-40 MPa	160-170°C	1.0-2.5%	Packaging, automotive parts, household items	Good chemical resistance, suitable for high-speed molding
Acrylonitrile Butadiene Styrene (ABS)	40-60 MPa	200-260°C	0.4-0.8%	Consumer goods, electronics, automotive parts	Tough, impact-resistant, good dimensional stability
Polyethylene (PE)	10-30 MPa	110-130°C	1.5-3.5%	Bottles, containers, packaging film	Low density, flexible, ideal for lightweight applications
Nylon (PA)	60-80 MPa	220-260°C	0.5-1.5%	Automotive parts, industrial components	With high strength and toughness, moisture absorption is a factor
Polycarbonate (PC)	55-75 MPa	260-270°C	0.5-0.7%	Optical disks, electronics, automotive lenses	Excellent transparency, impact resistance, expensive
Polyethylene Terephthalate (PET)	50-80 MPa	250-260°C	1.2-2.5%	Bottles, packaging, industrial components	High strength, clarity, good for recyclable applications
Polystyrene (PS)	30-50 MPa	210-250°C	0.4-0.8%	Disposable containers, insulation, packaging	Low-cost, rigid, but brittle

Types of Stack Molds

Here are some common types of stack molds we can use in different applications;

1. Two-Level Stack Mold

It has two cavity levels that produce double the number of single-level molds. So, they help fit the need for a raise in production without extra machines. It is cost-effective for mid-range production quantity range and effectively controls the usage of the machines.

2. Three-Level Stack Mold

It has three cavity levels, which increases output by three times and is effective for use in industries where productivity is all important. Besides this, it minimizes idle time and optimizes the end product throughput without enlarging the effective area of the machine.

3. Four-Level Stack Mold

This mold is created for parts with an extremely high demand; and features four cavities which multiply production four times per cycle. It is ideal for use where large quantities of goods are produced with a need to achieve very close tolerances.

4. Rotating Stack Mold

Of course, multiple sets of platens are configured to perform molding and cooling in various tiers to increase production rates and shorten the cycle time. This system is more efficient in its function since it accomplishes several tasks in a single cycle.

5. Index Plate Stack Mold

Through the cycle, each level shifts to a new position that allows multiple-stage operations in a single mold. It is useful for fabricating contractual parts that may need different operations at various cycles.

6. Collapsible Core Stack Mold

It is ideal for expelling objects with intricately compact sections such as threads or undercuts. It works perfectly for producing complex plastic parts which may be hard to demould without causing an effect on the part. So, the cores reduce the chances of the layers sticking together or the core dragging in the layer above during ejection.

7. Hybrid Stack Mold

Stack molds are special molds that consist of two or more molds sometimes known as tandem or rotating molds and hybrid stack molds with other molding techniques. This design makes it possible to produce parts since the molding processes are done in one mold. Doing so yields a multifunctional system, that can fashion complex components with diverse characteristics in one cycle.

Comparison Between Stack Molds vs. Tandem Molds

Here is a brief table to compare the stack molds with tandem molds;

Feature	Stack Molds	Tandem Molds
Mold Structure	Multiple levels of cavities stacked vertically.	Two molds operating in tandem, side by side.
Operation	All cavity levels are filled and ejected simultaneously.	Molds alternate operation, one fills while the other cools.
Cycle Time	~20-30% shorter cycle time compared to single molds.	~10-20% longer due to alternating mold operations.
Production Output	High output (2x, 3x, 4x depending on mold levels).	Moderate output increase (1.5x to 2x compared to a single mold).
Part Complexity	Best for simple to moderately complex parts.	Suited for more complex parts or multi-stage operations.
Material Usage	Single runner system shared across all cavity levels.	Separate runner systems may be required for each mold.
Energy Efficiency	More efficient (~10-15% energy savings due to simultaneous operations).	Slightly less efficient due to alternating operations.
Ideal Use Case	High-volume production of identical parts.	Producing complex parts requires different molding stages.

Selecting the Right Manifold System for Your Stack Molds

Here are some ways you can opt to select the right system for stack molds;

Multiple Cavities: Enables manufacturing similar items to reduce unit injection molding cost and increase yield.
Compact Design: Allocating cavities in vertical columns reduces the floor space, especially in a facility with limited space.
Enhanced Cooling Efficiency: Conventional and coupled cooling structures with counterflow provide efficient cooling in all cavities. Besides this, it has a reduced cycle time and better parts quality.
Simplified Ejection Mechanism: Advanced ejection methods help to snap off parts without causing any harm to those parts.
Hot-Runner Technology: Reduces Styrofoam material waste and guarantees equal filling since plastic is retained at its molten state before entering cavities.

Selection of manifold system for stack molds

Material Compatibility: Check whether the structure and functionality of the manifold system meet the flow characteristics and thermal properties of those specific materials used in the fabrication of the circuit board.
Flow Distribution: Choose a cavity with a design that would allow for even distribution of the material to all levels to prevent pressure loss
Temperature Control: Select the system that controls the temperature to affect the part’s viscosity or material quality.
Ease of Maintenance: Select a design that disassembly since products need regular maintenance and cleaning.
Scalability: Research for a manifold system that could be promptly changed or added to correspond to future production.

Applications of Stack Molds

Stack molds are commonly used in industries requiring high-volume production, such as:

Vehicle structure and interiors or car components and casings.
Consumer products (packaging, caps)
Other (syringes, caps)
Electronics (housing, connection)

Advantages of Stack Molds

Increase in production capacity by thousands of percent
Efficient material usage
Reduced labor costs
This usually results in minimized thereby minimizing floor space requirements of the varied facilities.
High return on investment

Disadvantages of Stack Molds

Higher upfront cost
Complicated mold design and need for frequent repair
These call for a higher method that is more precise and controlled by more advanced machinery.
Possible case to get part quality wrong if not balanced appropriately

Misconceptions Regarding Stack Molding.

Myth: Stack molds are too expensive for small businesses. Fact: This is always a costly affair in the initial procedure but it also helps in saving a lot of consumable material and time of production in the long term.
Myth: Stack molds are the disadvantage of part quality. Fact: Good design dictates that a particular part should be of the same quality regardless of its cavity level.

Ideal Use Cases for Stack Molds

Stack molds are ideal in settings that require frequent changes in the heated mold, where the load is relatively large relative to the mold size, and in applications where the mold is to be periodically replaced with a cooled mold.

Stack molds are best suited to situations where large quantities of one part are required especially in production runs. These are particularly important in industries that require great accuracy such as the packaging industry, especially the manufacturing of consumer packaging products and the medical device industry.

Conclusion

In conclusion, Stack molding is one of the most effective production techniques that can greatly improve the production rate of many products in the production line, particularly in the high production line industry. Yet, stack molds can increase the density of cavings without enlarging the size of the machinery to help realize the high production value at a lower injection molding unit cost. So, know the types, materials, and design considerations. So, you can maximize the advantages of stack molding.

Frequently Asked Questions

What is Stack mold injection molding?

It’s a method that employs several cavities to manufacture several molding parts at once per cycle.

What materials can be used in stack molds?

PP, ABS, and Nylon are some of the available polished materials.

What is the difference between stack molds and tandem molds?

While stack molds make parts that are similar to each other at the same time, the second type of molds, the tandem molds create parts in different stages.

In which sectors are stack molding useful?

Almost every type of manufacturer such as automotive, packaging, medical, and electronics manufacturers among others.

How does hot-runner technology improve stack molding?

It cuts down the wastage of material and proper completion of wall cavities.

Are stack molds expensive?

Their cost is initially higher than other machines, but, the production efficiency is much higher.

2021年4月24日/by admin

Injection molds, Plastic Mold Companies, plastic mold manufacturer, Plastic mold manufacturers

Mold Modification Process

As a professional plastic mold company, during mold manufacturing, we normally have some requirement for mold modification, this is a very common issue when we manufacture molds for our customer, below is a step that how to handle this modification in our mod company

When we receive a request for modification from our customer. After that, we analyze the requested modification, which must be done at least within the same day as the files have been received or latest the morning after if the files have been received in the afternoon. It is important to create a clear illustration of the modification (ppt file to list the modification items) for internal communication with our team and with customers. Note since that part drawing that is not approved for production so we cannot save to our database.
We need to send this modification illustration to our mold shop manager, responsible Quotation Engineer.
The mold production manager then checks out, at least within the same day, Together with the mold master to decide how long time that is required for the modification. We will specify one shortest possible lead-time and one maximum time required. Because sometimes the customer is very busy or maybe not so hurry.
The Quotation Engineer then prepares an offer as soon as possible. This shall be done latest within the same day as he/she receives the working steps and lead-times from the mold manufacturing department. The offer should include the offered price and the minimum and maximum lead-time. Once ready with the offer the Quotation Engineer sends the offer to project manager, then the project manager directly sends to customers.
Once the customer approves the concerned modification the Project manager will use the new valid part drawing is saved into our database and inform the mold design department to update the tool drawing immediately. Another thing that must be controlled by the Project manager is that the promised lead-time will be fulfilled. Send an email to production department or mold shop manager. That will make it easy for the mold shop manager to keep control of the lead-times.
After the modification finished, new mold trial is needed, after mold trial and check the modification is done according to the new drawing, then send the new samples to customers, during the same time update the measurement report and send to customer as well.

Sincere Tech is a professional China plastic mold company, we offer one-stop service from part design, prototype, mold design, mold manufacture, injection molding parts, secondary process, and assembly, if you have a project that needs to help, you are welcome to contact us.

2019年8月20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, 2-Shot Injection Molding, custom injection molding, Gas assist moulding, hot runner molding, Injection Mold China, Injection Mold Maker, overmolding, plastic injection mold, plastic mold, Plastic mold china, plastic molding, plastic molding china, plastic mould, two shot mold, Two-Shot molding

Plastic Injection Molding Service

Looking for plastic injection molding service?

The excellent quality of our plastic molds and molded parts, coupled with our experience and the performance of our services give us today a high international recognition. Indeed, the company is specialized in International Business and has customers all over the world. SINCERE TECH has very high standards of quality control and always runs long tests to make sure that our Plastic Injection Molding Service reaches all the expectations of our customers. We believe that the quality of a company and its products are seen through time and this is why we like to build strong long-term partnerships with our customer

What is plastic injection molding process?

Plastic injection molding is a manufacturing process in which melted plastic is injected into a mold and then cooled to form a solid part. The mold is created from a metal or plastic tool (1.2344, H13, NDK80, etc.) and is typically made in two halves that are clamped together. The plastic material is heated in a barrel and then forced into the mold under high pressure where it cools and solidifies into the desired shape. This process is used to produce large quantities of identical parts with high precision and repeatability.

When do you need plastic injection molding service?

You may need plastic injection molding service when you require mass production of plastic parts with consistent quality and high precision. This process is ideal for producing large quantities of the same part, as the mold can be used multiple times to produce identical pieces. Additionally, plastic injection molding is well-suited for producing complex and intricate shapes that would be difficult or impossible to achieve with other manufacturing methods. This process is often used in various industries such as automotive, consumer goods, medical devices, and electronics.

plastic molding services

Benefits of plastic injection molding service

The benefits of plastic injection molding service include:

High volume production: Plastic injection molding is ideal for high volume production of identical parts, as the mold can be used multiple times.
Consistent quality: The process is highly repeatable, which leads to consistent quality of parts produced.
Complex shapes: Plastic injection molding can produce complex and intricate shapes that would be difficult or impossible to achieve with other manufacturing methods.
Material flexibility: A wide variety of plastic materials can be used in the injection molding process, including thermoplastics, thermosets, and elastomers.
Cost-effective: The process is efficient and cost-effective for producing large quantities of parts, as the cost of the mold can be spread over many parts.
Precision: The process can produce parts with high dimensional accuracy and minimal tolerance variation.
Automation: Plastic injection molding machines can be automated for increased productivity and reduced labor costs.

Plastic injection molding is a versatile and reliable manufacturing process that can provide significant benefits for producing large quantities of complex and high-precision plastic parts.

Plastic Injection Molding Service in China

We are the manufacturer of our own moulds (toolmaker or plastic injection tooling) and support the production of Injection molded parts allowing reducing your numbers of suppliers. Our injection machines have clamping forces going from 60 to 1050 Tons (2000 Tons outside). Plastic injection molding is the process of producing parts from thermosetting and thermoplastic materials.

Our qualified teams of Designers, Quality controllers and our Research and Development Department allow us to complete our policy: achieving Customer Satisfaction through Improvement and Innovation. The quality of our products and organization permits us to obtain quality certifications (ISO 9001, ) and be awarded numerous times of “Quality Supplier” from different customers. We integrate constantly new resources into our process in order to anticipate any future need of the plastic injection molds market and we became one of the most innovative companies in the sector. The modernity and the organization of our facilities allow us to adapt very quickly to the customer’s needs.

SINCERE TECH has always the objective to stay one of the innovative leaders of the sector and play an important role in our customer’s development. The firm can now propose a total solution from mould design to the semi-finished product (All in-house). SINCERE TECH is always willing to integrate new processes to the solution proposed by staying aware of new technologies. If a customer has a special requirement, we will do everything to fulfill its needs.

Plastic Materials /Commodities

We are used to working with all the classic and less classic plastic materials except PVC (PP, PE, PC, ABS, PC+ABS, PA 6, PA 6.6, PBT, PMMA, TPU, PC+GF, AS, PTFE, POM, PEHD, PEEK…). Our main suppliers are Sabic, Bayer, and Chimei.
About the steel used for our moulds, for export plastic molds we work only with the best steel suppliers like Assab (Sweden), Buderus (Germany), Daido Steel (Japan) LKM( the biggest one in China). For our standard component suppliers, we work with Hasco and DME.

We are used to working with our suppliers the same way we work with our customers. It means good long-term relationships with high-quality policy.

Complex moulds: SINCERE TECH has a rich experience in difficult plastic mould and parts, complex moulds and is an expert in finding solutions to your issues. SINCERE TECH is a real specialist in difficult tooling. To give a classic example: many design companies create plastic products without thinking about mould construction. Then, when the designs are sent to toolmakers, it can be hard for them to make the exact parts (Difficult design, many sliders, many lifters, double injection with materials non-bonding well together, many details in awkward places…).

Most of the classic toolmakers will accept the parts and say that they are able to do it. And then, they will have problems with the plastic injection mould construction, the lead time will be extended and the quality of the tool will not be as expected. Often, these companies have to contact SINCERE TECH to help them to resolve their problems. If you are not sure about the complexity of your part, be sure about your mould maker’s professionalism. SINCERE TECH works closely with its customers in order to resolve any issues.

Thin Wall injection molding: it permits a precise, very accurate molding of plastics and gives better details to the product. This is the name referring to products with a wall thickness lower than 2mm. Usually, the flow is quick, permits a short cycle time and a cost-saving.

Hot runner mold: the special process of injection of plastics where the plastic is kept hot when going through cavities of the mould while the rest of the mould is getting cold to solidify the plastic part and create the molded part: this permits to save plastic material. This is mainly used for parts with medium or large sizes. We are used to working with all popular companies like Yudo, INCOE, Synventive, Husky, HRS… We also have the technology to make our own hot runner systems if the production of the parts (Molding) is made in-house. This again allows our customers to save costs.

Optical Lens Molding: precision molding for glass plastic. This is the technique to produce transparent plastic molded parts (For example Security cameras parts such as the dome cover or also phone frames).

Gas-assist Injection Molding: the plastic parts are gas-assisted molded which means that gas (Most often is nitrogen) is injected at the final stage of the part creation process. It permits to reduce the cycle time, the product weight, the risk of deformation and also the pressure tons injection needed. Moreover, it makes the part’s structure stronger with a better look.

LED/LCD frame molding: injection of plastics used for example to manufacture television screen monitors, computer back-light modules, GPS frames…

IMD, IMF, IML, IMR Molding: In-mold decoration. The decoration of the part is made inside the mould through a film. The film is printed before the molding with the designs wanted. It permits better productivity and extends the decoration’s lifetime. If the customer wants to change the design/decoration of the part, it is not necessary to make another mould but only to change the film. SINCERE TECH is experienced with In-mould forming, in-mold-labeling, and in-mold by roller.

Overmolding: this technique permits to join several components together with a thermoplastic material. This reduces assembly and labor costs. Because the parts are made together, this allows less risk of improper termination or misalignment and increases the design flexibility. Moreover, thermoplastic provides better resistance to vibration or shocks. This technique permits to increase resistance, reduce costs and weights.

Insert Molding: this is a technique where a small part (Stamping part, optical part…) is added or inserted to the Injection molded part.

Two-Shot Molding: 2 independent injection units using 2 different materials and/or colors. The first material is injected; then, the mould rotates and the second material is injected to make 1 part. It permits a 2-colour-molding or also called double injection, 2 shot molding, two-shot injection, overmolding, 2K injection, two colour injection, bi-injection, dual shot molding or multi-component molding.

CNC Technology. CNC is an abbreviation for Computer Numerical Control. This is a machine extremely accurately controlled by computer programs permitting a CAM (Computer-aided Manufacturing) through a CAD (Computer-Aided Design). Any plastic injection tool manufacturer uses it but the value-added of SINCERE TECH is the experience, professionalism, and training of the staff.

FMMS Molding or can be called RHCM (Rapid Heat Cycle Molding): excellence surface appearance: permits to take off the welding line. This process is integrated into the molding to save time. It is used for example for clear plastic parts.

US Welding: Ultrasonic Welding: process to weld/ join/ assemble plastic parts thanks to ultra-sounds.

Silk-Screen Printing: this is to print logos or designs on parts.

Dip-Coating: this is the process of putting the component inside a liquid solution to apply a thin film on it. It permits to manage, change the hardness, the strength of the part by protecting it and expanding the lifetime of the product. Then, the excess liquid has to be drained and evaporation of the solvent is done to create the thin layer.

Laser Etching: this process is made for cutting a shape, a pattern, an image on the plastic part. It is also called laser graving.

Sputtering coating: this is the process of creating a very thin layer of conducting material on the component. It is also called Plasma Enhanced Chemical Vapor Deposition (PECVD) and can be done with most metals like aluminum, stainless steel, copper…

EMI shielding: protect parts from electromagnetic interferences. It is used to protect electrical signals from the outside world. For instance, we use it with marine radars for Garmin.

Waterproof technology: SINCERE TECH has the experience to make water-resistant parts and is able to ensure in-house tests thanks to the IP68 tests.

Sub-assembly: this is the pre-assembly of a component who will be later on being assembled in a larger product.

R&D: SINCERE TECH has its own Research and Development department in order to work with the customers on their projects, advise them on designs, resolve issues and study the feasibility of those.

Quality Control: We have very high standards of quality control in order to respect any requirements from our customers. We have a 100% quality control on our plastic molded parts, it means we control any part coming out of our production.

At Sincere Tech China mold maker, our unwavering commitment to staying at the forefront of the plastic mold industry drives us to embrace advancements and anticipate future trends. We continuously explore innovative materials and composites that offer enhanced performance and promote sustainability. By investing in ongoing research and development, we consistently deliver cutting-edge solutions that meet the evolving needs of our valued customers. As a trusted injection mold supplier in China, we take pride in our unwavering dedication to excellence.

Aligned with our sustainability goals, we place a high priority on environmentally friendly practices. We actively seek out sustainable alternatives, such as biodegradable polymers, and implement recycling initiatives to minimize the environmental impact of our manufacturing processes. By choosing our custom injection molding services, you can align your brand with sustainable manufacturing practices and contribute to a greener future.

Ensuring quality is our topmost priority, and we maintain rigorous quality control measures throughout the entire manufacturing process. Equipped with state-of-the-art facilities and staffed by skilled technicians, we subject each product to thorough inspection and testing. This guarantees exceptional performance, reliability, and customer satisfaction.

When you choose Sincere Tech as plastic injection molding service partner in China, you can expect the highest level of professionalism, expertise, and innovation. Our dedicated team is committed to helping you bring your ideas to life, delivering superior products that excel in performance, durability, and cost-effectiveness.

Partner with Sincere Tech Mould suppliers for your custom plastic injection molding service, and benefit from our comprehensive capabilities, unwavering commitment to quality and sustainability, and our drive to exceed your expectations at every step of the process. Together, let’s bring your innovative ideas to life.

2019年4月19日/by admin