Production Facility & Equipment

Thermo-Plastic Injection Mold Processing and Finishing Equipment, Ultrasonic Welders, Pre-Drying Equipment, DME & KONA Hot Runner Controls, Various Custom Automatic Part Sorting Machines

SIINCERE TECH uses a wide variety of state-of-the-art thermo-plastic injection mold processing and finishing equipment. This means that we have the right size machines for your project, large or small, enabling us to provide you with the most economical production options available.

Production Facility and Equipment Features

  • All machines are equipped with:
    • Material drying and loading systems
    • Dual mold temperature control units
    • Central cooling (chiller) units connection
    • Connection to a CIM or central process
      monitoring system
  • Some machines are equipped with:
    • Core pulls
    • Profile injection
    • Sprue pickers and related closed loop
      material handling systems
  • Ultrasonic welders
  • Pre-drying equipment
  • DME & KONA hot runner controls
  • Various custom automatic part sorting machines
  • Complete coverage quick mold change capability
  • 2 Class 100,000 clean rooms
  • ISO 9001:2000 Certification

Injection molding Process & Finishing Equipment

Machine Type Machine brand Quantity
Injection machine HAITIAN 90T 2
Injection machine HAITIAN 120T 6
Injection machine HAITIAN 150T 6
Injection machine HAITIAN  200T 4
Injection machine HAITIAN  250T 2
Injection machine HAITIAN 300T 1
Injection machine HAITIAN  380T 1
Injection machine HAITIAN 500T 1
Injection machine Sumitomo 180T 2
Injection machine Sumitomo 220T 1
Injection machine Sumitomo 650T 1
Injection machine Mitsubishi 850T 1
Injection machine JSW J1600E C5 1
Two color Injection Molding machine HWA CHIN 220T 1
Double color Injection Molding machine HWA CHIN 300T 2
Injection Molding Nylon

Thermoplastic Injection Molding Process

What is Thermoplastic Injection Molding

Thermoplastic injection molding is a widely used manufacturing process for producing plastic components in large volumes with high precision. This technique involves injecting molten thermoplastic material into a mold cavity, allowing it to cool and solidify, ultimately forming the desired shape. The process is commonly employed to manufacture a diverse range of plastic products, from intricate components to everyday items.

Thermoplastic injection molding Process is the best method that most widely used of all plastics processing. Once formed, thermoplastics can be heated, reformed and recycled over and over again, reducing waste and saving on material costs. The Thermoplastic injection molding process is now become very popular and often used by many manufacturers.

Thermoplastic injection molding is a high quality of molding key that mainly used by many successful manufactures. This moulding process provides the lowest piece prices available. A high-value injection mold is essential to a project’s successful completion. Using thermoplastic injection moulding can bring your manufactures successfully.

The primary process for manufacturing custom plastic parts and components is thermoplastic injection molding. Although custom plastic moulding differs from one product manufacturer to another, the principle of applying heat and pressure to form plastic parts or components is a method that is synonymous across the mold making industry.

The advantages of Thermoplastic Injection Molding process

Thermoplastic Injection Molding offers a multitude of advantages that make it a preferred manufacturing process in various industries. Here are some key advantages:

  1. High Precision and Complexity:
    • Injection molding allows for the production of intricate and highly detailed parts with tight tolerances. This precision is crucial in industries where product functionality and performance are paramount.
  2. Efficient Mass Production:
    • Well-suited for high-volume production, thermoplastic injection molding enables the rapid and consistent manufacturing of large quantities of identical parts. The cycle times are relatively short, contributing to increased efficiency and lower production costs per unit.
  3. Material Versatility:
    • A wide range of thermoplastic materials can be used in the injection molding process, including commodity plastics like polyethylene and polypropylene, as well as engineering-grade plastics such as ABS, polycarbonate, and nylon. This versatility allows for the selection of materials tailored to specific product requirements.
  4. Cost-Effective for Large Runs:
    • While initial tooling and plastic mold setup costs can be significant, the per-unit cost decreases with higher production volumes. This cost efficiency makes injection molding economically viable for large-scale manufacturing.
  5. Reduced Post-Processing Requirements:
    • The molded parts often require minimal post-processing, as the mold itself imparts a finished and detailed surface to the product. This reduces the need for additional finishing steps, saving time and costs.
  6. High-Quality Surface Finish:
    • Injection molding can produce parts with a smooth and high-quality surface finish directly from the mold. This is advantageous for applications where aesthetics or a polished appearance are crucial.
  7. Fast Cycle Times:
    • The cycle times in injection molding are relatively short, enabling rapid production rates. This is particularly advantageous for meeting tight production schedules and quick turnaround times.
  8. Consistency and Reproducibility:
    • The automated nature of the injection molding process ensures a high level of consistency and reproducibility in part production. This is essential for maintaining product quality across large production runs.
  9. Design Flexibility:
    • The flexibility of injection molding allows for the incorporation of complex shapes, undercuts, and intricate features in the design. This design freedom is valuable for creating innovative and functional products.
  10. Waste Reduction:
    • Efficient use of material and the ability to recycle excess material contribute to reduced waste in the injection molding process, aligning with sustainable manufacturing practices.

In summary, thermoplastic injection molding stands out for its ability to produce high-quality, complex parts at scale with cost-efficiency. The advantages extend to design flexibility, material versatility, and the capability to meet the demands of various industries. As technology and materials continue to advance, injection molding remains a cornerstone of modern manufacturing.

Steps in the Thermoplastic Injection Molding ProcessThermoplastic Injection Molding

The thermoplastic injection molding process involves several precise steps to transform raw thermoplastic material into a final, molded product. Here is a detailed breakdown of the key steps:

  1. Mold Design and Fabrication:
    • The process begins with the design of the mold, also known as the tool or die, based on the specifications of the desired product.
    • The mold is typically made of durable materials like steel or aluminum to withstand the high pressures and temperatures of the molding process.
  2. Mold Preparation:
    • The mold is prepared for the injection molding process. This includes cleaning, inspecting, and applying any necessary surface treatments or coatings to enhance mold release.
  3. Clamping:
    • The mold is securely clamped shut within the injection molding machine. This step is crucial to prevent any material leakage during injection and to withstand the high pressure applied during the process.
  4. Injection:
    • The thermoplastic material, typically in the form of small pellets or granules, is fed into the injection molding machine’s hopper.
    • The material is heated and melted within the machine’s barrel, forming a viscous molten resin.
    • The injection unit then injects the molten plastic under high pressure into the mold cavity. The pressure ensures that the material fills the mold completely.
  5. Cooling:
    • Once the mold cavity is filled, the molten plastic is allowed to cool and solidify. The cooling process is crucial for achieving the desired shape and structural integrity of the final product.
    • Cooling can be controlled through the circulation of coolants within the mold or by other cooling methods.
  6. Mold Opening:
    • After the plastic has sufficiently cooled and solidified, the mold opens. This step exposes the newly formed plastic part.
  7. Ejection:
    • The ejector pins or mechanisms within the mold are activated to push the molded part out of the mold cavity.
    • The part is then released from the mold and collected for further processing or quality control.
  8. Post-Processing (Optional):
    • Depending on the application and product requirements, there may be additional post-processing steps such as trimming excess material, surface finishing, or assembly.
  9. Quality Control:
    • The molded parts undergo quality control checks to ensure they meet the specified design criteria. This may involve dimensional inspections, visual inspections, and other testing methods.
  10. Repeating the Process:
    • The entire cycle is then repeated for subsequent production runs. The mold can be used repeatedly to create identical parts, making the process efficient for large-scale manufacturing.

The success of the thermoplastic injection molding process relies on precision, control of parameters, and attention to detail at each stage. This systematic approach ensures the production of high-quality plastic components consistently.

Applications of Thermoplastic Injection Molding:

Thermoplastic injection molding is a versatile manufacturing process widely used across various industries to produce a diverse range of products. The adaptability and efficiency of this method make it suitable for applications in:

  1. Automotive Industry:
    • Thermoplastic injection molding is extensively employed in the automotive sector for manufacturing interior and exterior components. This includes dashboard panels, door handles, bumpers, trim pieces, and various other plastic parts that contribute to the overall aesthetics and functionality of vehicles.
  2. Consumer Goods:
    • The consumer goods industry relies on injection molding for producing a multitude of products. Examples include plastic containers, household appliances, toys, kitchenware, and electronic enclosures. The process allows for cost-effective production of high-quality, complex shapes with consistent quality.
  3. Medical Devices:
    • In the medical field, thermoplastic injection molding is utilized to manufacture a wide range of devices and components. This includes syringes, IV connectors, medical tubing, surgical instruments, and various plastic enclosures for diagnostic equipment. The precision and repeatability of the process are critical in the medical sector.
  4. Electronics:
    • Electronic components often require intricate and precisely molded plastic parts. Thermoplastic injection molding is employed for producing casings, connectors, switches, and various other components used in electronic devices. The process ensures the necessary precision and consistency demanded by the electronics industry.
  5. Packaging Industry:
    • Thermoplastic injection molding is used to create packaging solutions for food, beverages, cosmetics, and other consumer products. This includes containers, caps, closures, and packaging inserts. The ability to mass-produce these items with high precision is vital for the packaging industry.
  6. Industrial Components:
    • Many industrial applications benefit from the strength and durability of thermoplastic injection-molded components. This includes gears, housings, brackets, and various parts used in machinery and equipment across different industrial sectors.
  7. Aerospace:
    • In the aerospace industry, thermoplastic injection molding is employed for manufacturing lightweight and durable components. This includes interior components, ventilation ducts, brackets, and other parts where high strength and precision are essential.
  8. Construction:
    • Construction applications involve the use of injection-molded plastic components for various purposes. This includes fittings, connectors, panels, and other construction elements where lightweight, durable, and cost-effective materials are desired.
  9. Sporting Goods:
    • Thermoplastic injection molding is used to produce a wide range of sporting goods, including helmet shells, protective gear, handles, and other components. The process allows for the creation of lightweight yet robust products.
  10. Custom and Specialized Products:
    • The versatility of thermoplastic injection molding makes it suitable for producing custom and specialized products across different industries. This could include unique consumer products, industrial prototypes, and components designed for specific applications.

The widespread use of thermoplastic injection molding across these diverse industries highlights its significance as a go-to manufacturing process for creating high-quality, precision-engineered plastic components. The process continues to play a crucial role in shaping various products that are integral to our daily lives and industrial processes.


Known as a versatile and economical material, plastic can be used in a variety of applications. Of all the available plastic processing methods, thermoplastic injection molding is the most widely used among the broadest spectrum of markets. You can find that many manufacturers nowadays use this kind of the plastic molding process.

Thermoplastics come in a wide range of plastic materials, including polystyrene, acetal, polyurethane, nylon, polyethylene, polyester, polypropylene, ABS and polycarbonate. By using thermoplastic injection molding, manufacturers can produce a wide variety of products. You can use all the designs to make the best quality products that can be used in many areas.Mold Manufacturer China

There are many reasons why it is important for you to use this thermoplastic injection molding. These reasons will make you sure in using this plastic molding process.

The first reason is that large quantities of thermoplastics are cheaper to produce than steel & stainless steel.

The second reason is because of thermoplastics’ lightweight cars manufactured with them is more fuel efficient as well as light-weight and the last is thermoplastics are corrosion-resistant and can withstand extreme temperatures. So there is no doubt in using this plastic molding process.

Using the range of thermoplastics can meet your specific injection-molded plastic product manufacturing requirements, from the simple to the complex shape, detail and tolerance. Combined with an extensive array of in-house thermoplastic injection molding presses and peripheral molding systems is your one-stop source for your entire thermoplastic component manufacturing needs.

Manufacturers that use thermoplastic injection molding can produce thermoplastic parts in a wide range of materials to meet your specific needs. It will give your manufacture a big chance to be successful manufactures that produces a wide variety of products of thermoplastics. Having produced small, medium and large production runs of thousands of different products can manufacture virtually any injection-moulded plastic component.

We are A China mold maker, we provide plastic injection molds for thermoplastic injection molding parts, if you have any in need this service, please send us your requirement for quotation, we will quote you in 24 hours. You will have the best price and service.


Plastic Injection Moulding China

Plastic Injection Moulding China

Recycled Plastic Injection Molding

Plastic injection mold Process for Plastic parts

Glass Filled Nylon Injection Molding

Injection Molded Parts

Injection molded parts

Injection molded parts

What is injection molded parts for?

Injection Molded Parts is plastic parts that are produced through plastic injection molding. It is known that plastic is known to be a very versatile and economical material that is used in many applications. Your computer monitor, mouse and keyboard are the examples of Injection Molded Parts.

Injection molded Parts is created by using an injection molding machine, which works by melting plastic pellets, and injecting them into a mold. Related to the case, designing plastic parts is a complex process, and the manufacturing end of it must be taken into account during the design phase. There are three elements of an injection molded plastic part; the nominal wall, projections, and holes and recesses.

The nominal wall as the first element of injection molded plastics refers to the wall thickness. The wall thickness throughout the part should not vary by more than 10 percent. Varying wall thicknesses in the injection molded plastic parts is one of the main causes of flawed product.

How to design injection molded parts

In designing injection molded parts, people usually avoid excessively thick walls, simply because thick walls use more plastic, and are more expensive to produce. However, there is a limit as to how thin the part can be as well. The strength of the part is a function of the thickness, and the final use of the product will determine the desired strength. Some specialized injection molded plastic parts require reinforcement with glass or carbon fibers.

A projection is another element of injection molded parts that projects out of the nominal wall, such as reinforcement ribs. The ribs must not be thicker than the nominal wall, or else sink marks may result.

Recesses and holes are also a major design element of plastic molding parts. The location of any holes or recesses may significantly affect the part’s overall strength. Trying to create a hole in the side of a part is especially challenging, and the need for side holes should be minimized in the initial design.

plastic molding parts

plastic molding parts

If you need plastic molding parts design or plastic mold making, welcome to contact us, we are mold manufacturer China that offer one top service for plastic injection mold molding service

Besides the three elements of injection molded parts mentioned above, another design factor is the corners of the part. How the plastic enters and fills the mold is of great concern. Because melted plastic is a fluid, fluid dynamics will dictate the design as well, to a large extent.

In this case, the plastic molding parts will flow better during injection if corners are rounded. In the other hand, the plastics will pull against a sharp corner during the cooling process, and a flawed part may result. To result in a stronger part that is less likely to crack or break, creating a low stress design with smooth transitions is a must.

There are two types of materials used in injection molded parts: thermoplastics and thermoset plastics. No matter what type of material is used, it is generally supplied in a granular or powdered format. Leftover and scrap materials from thermoplastics can be recycled, while those from thermoset plastics cannot, due to their chemical transformation during the mixing and curing process.

Types of thermoplastic materials used for plastic molding parts include: polystyrene, acrylonitrile butadiene styrene (ABS), polyimide, polypropylene, polyeththylene, and polyvinyl Chloride (PVC). Meanwhile, thermoset plastics consist of two or more base materials that are mixed together and then the mixture undergoes a chemical reaction to create a new material. Types of thermoset plastics used in injection molding include epoxy and phenolic.

mold manufacturer china

mold manufacturer china

Injection molding allows manufacturers to produce quality plastic components repeatably in a cost-efficient manner. As a result, injection molded parts are used in nearly every industry, from toys to automobile components.

Today during The fierce of market competition, most of buy are looking for mould suppliers in china companies to produce their plastic molds and plastic molding parts.

Sincere Tech is a plastic mold company that specializes in providing injection molded parts service for its clients. With its expertise in producing high-quality parts, the company has become a reliable partner for businesses in various industries.

The injection molding process involves the use of a mold to create parts from different materials such as plastics, rubber, and metals. Sincere Tech has a team of highly skilled engineers and technicians who work with clients to design and produce custom parts that meet their specific needs.

The company uses state-of-the-art equipment and technology to ensure that its injection molded parts are of the highest quality. It also provides a range of services, including prototyping, mold design, and mold making, to ensure that clients get the best results.

Sincere Tech is committed to providing its clients with exceptional service and products. Its team of experts works closely with clients to ensure that their specifications are met, while also providing valuable insight and guidance throughout the entire process.

Overall, Sincere Tech’s injection molded parts service is an excellent option for businesses in need of high-quality parts for various applications. With its expertise and technology, the company is capable of meeting the diverse needs of its clients and delivering outstanding results.

If you are looking for Injection mold China partner to increase your market competitive power, you are welcome to call us or send us and email, we are full equipment service in providing plastic mold and injection molded parts.

Sincere Tech, we are one of the top 10 best leading plastic mold companies in China. We offer wide range of custom plastic injection molds, die casting molds, metal parts, CNC machining and mold components. Through ongoing investments in research and development, we deliver cutting-edge solutions that address the evolving needs of our customers. As one of the best injection mold suppliers in China, we pride ourselves on our commitment to excellence.

Quality is of the most importance to us, to make sure we make high quality molds, we will use CMM measuring machine to measure all of mold components, electrodes, and all of final molding parts, to make sure all of dimensions are under the tolerance, We will test the function of parts, materials to make sure that the final part will meet your requirements.

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:

  1. 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.
  2. 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.
  3. 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.
  4. 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.
  5. 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.
  6. 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 injection molding, die casting and machining needs, we will offer you the best quality and fast lead time, contact us for quote in 24 hours.