Injection Mold

In modern industrial production, mold is an important technology used in shaping products (including metal products and nonmetal products) for all of the industries. Meanwhile, it is the ‘magnifying glass of efficiency and profit’ to the raw material and equipment, because the value of the final product made in the mold is often tens of, even hundreds of times as valuable as that of the mold itself.

The mold industry is the basic industry of the national economy, and it is called ‘the mother of industry’. Every aspect of human life such as clothes, food, housing, and transportation is closely connected with the mold industry. Therefore, the level of injection mold technology has been a significant symbol to measure a country’s developing level of mechanical industry.

And mold can be divided into two kinds of them: mold for metal products and nonmetal products.
The metal products mold include cold-press mold, pressing mold, forging mold, press casting mold, precise casting mold, stamping tool, punch tool, and dust metallurgy mold, etc. These kinds of mold have extensive apply-cation in electrode-cranial products, automobiles, aviation instruments, and other metal products.
The nonmetal products include plastic injection mold, ceramic mold, rubber mold, glass mold, food mold, and ornament mold. These kinds of molds have extensive apply cation in our lives, at this page we are talking about injection mold. this is the most papular modern technology which used in our life everywhere.

An injection mold used to form a plastic product using the injection molding process. A standard injection mould is made of a stationary or injection side containing one or more cavities and a moving or ejection side.

The resin, or raw material for injection moulding, is usually in pellet form and is melted by heat and shearing forces shortly before being injected into the mould. The channels through which the plastic flows toward the chamber will also solidify, forming an attached frame. This frame is composed of the sprue, which is the main channel from the reservoir of molten resin, parallel with the direction of the nozzle, and runners, which are perpendicular to the direction of the nozzle and are used to convey molten resin to the gate(s), or point(s) of the gate and feeding the molten material into the mold cavity. The sprue and runner system can be cut off and recycled after molding. Some moulds are designed such that it is automatically stripped from the part through the action of the mould. For example, the submarine gate or banana gate, if using hot runner systems then there will be no runners.

The quality of the injection molded part depends on the quality of the mould, the care taken during the moulding process, and upon details of the design of the part itself. It is essential that the molten resin is at just the right pressure and temperature so that it flows easily to all parts of the mold. The parts of the injection mold must also come together extremely precisely, otherwise small leakages of molten plastic can form, a phenomenon known as flash. When filling a new or unfamiliar mould for the first time, where shot size for that particular mould is unknown, a technician should reduce the nozzle pressure so that the mold fills, but does not flash. Then, using that now-known shot volume, pressure can be raised without fear of damaging the mould. Sometimes factors such as venting, temperature, and resin moisture content, can affect the formation of flash as well.

Injection Mold Material

Traditionally, molds have been very expensive to manufacture therefore they were usually only used in mass production where thousands of parts are being produced. Injection Molds are typically constructed from hardened steel or aluminum. The choice of material to build a mold is primarily one of economics. Steel molds generally cost more to construct, but their longer lifespan will offset the higher initial cost over a higher number of parts made in the mold before wearing out. Aluminum molds can cost substantially less, and when designed and machined with modern computerized equipment, can be economical for moulding hundreds or even tens of parts.

Requirements for the injection mold

ejection system

An ejection system is needed to eject the molded part from the cavity at the end of the molding cycle. Ejector pins built into the moving half of the mold usually accomplish this function. The cavity is divided between the two mold halves in such a way that the natural shrinkage of the molding causes the part to stick to the moving half. When the mold opens, the ejector pins push the part out of the mold cavity.

cooling system

A cooling system is required for the mold. This consists of an external pump connected to passageways in the mold, through which water is circulated to remove heat from the hot plastic. Air must be evacuated from the mold cavity as the polymer rushes in. Much of the air passes through the small ejector pin clearances in the mold. In addition, narrow air vents are often machined into the parting surface; only about 0.03 mm (0.001 in.) deep and 12 to 25 mm (0.5 to 1.0 in.) wide, these channels permit air to escape to the outside but are too small for the viscous polymer melt to flow through.

All of the information we referred from Wikipedia, but we sort out together for easy to read, if you want to know more, please go to injection mold Wikipedia.


The injection unit of injection molding machine is much like an extruder. The injection unit melts the polymer resin and injects the polymer melt into the mold. It consists of a barrel that is fed from one end by a hopper containing a supply of plastic pellets. The unit may be: ram fed or screw fed.

The injection unit consists of a granulate hopper, cylinder, screw, nozzle, heating bands and hydraulic drives and serves the purpose of melting and injecting the moulding material.



Injection screw

The reciprocating-screw machine is the most common. This design uses the same barrel for melting and injection of plastic.

The alternative unit involves the use of separate barrels for plasticizing and injecting the polymer. This type is called a screw-preplasticizer machine or two-stage machine. Plastic pellets are fed from a hopper into the first stage, which uses a screw to drive the polymer forward and melt it. This barrel feeds a second barrel, which uses a plunger to inject the melt into the mold. Older machines used one plunger-driven barrel to melt and inject the plastic. These machines are referred to as plunger-type injection molding machines.

Plasticizing cylinder

Screw position at the end of the dosage process; the plasticized material is in front of the screw tip. Screw position after the injection process; the plasticized material is injected into the mould. A material cushion is left in front of the screw for injection into the mould during the holding pressure phase.

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 injection molded plastic parts is as easy as selecting Our modern molding facility is located in Changping Town, Dongguan, China, an efficient plastic mold & molding company service 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.

Injection Molded Plastic 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.

SINCERETECH’s advanced design and engineering techniques produce the highest quality plastic injection molds available today.

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.

injection molded plastic parts

injection molded plastic parts

For more information, see the home page.

Injection Molded Plastic Parts: 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 injection molded plastic 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.

We are A Plastic Molding Parts Manufacturing Company, ISO 9001:2008 Registered, Cost-Effective Manufacturing Process, High Quality Products, Quality Assurance

Finding the right source for all your injection molded thermoplastic parts is as easy as selecting DONGGUAN SINCERE TECH CO.LTD (SINCER ETECH). If you need quality injected-molded parts from an ISO 9001:2000 Certified supplier, and you need them on time, ACM is the answer.

Plastic Mold & Plastic Molding Parts Service: Your One-Stop Solution

SINCERE TECH is a “one-stop, one-responsibility” company. our skilled, quality-minded thermoplastics professionals are committed to superior service, providing solutions to customers’ needs from concept to finished product. At our modern plastic molding facility you will be guaranteed:

  • Top quality products
  • The latest in technological equipment
  • Cost-effective manufacturing processes
  • Quality assurance procedures

We are capable of producing a wide variety of plastic parts and components, for industries of all types, including:

  • A / C Vents
  • Actuators
  • Bezels
  • Blood Testers
  • Boat Parts
  • Bobbins
  • Bottle Ties
  • Boxes
  • Brackets
  • Buckles
  • Cases
  • Clips
  • Component Boxes
  • Computer Peripherals
  • Connectors
  • Cosmetic Packaging
  • DVD / VCR Faceplates
  • Faucet Extrusions
  • Flower Pot Bases
  • Fuse Blocks
  • Gear Shift
  • Knobs
  • Gears
  • Housings
  • Junction Boxes
  • Key Fobs
  • Knobs
  • Lenses
  • Light Pipes
  • Motor Housings
  • Name Plates
  • Phone Parts
  • Push Buttons
  • Radiator Tops
  • Seat Belt Parts
  • Shields
  • Spacers
  • Spools
  • Switches
  • Tail Lamp Sockets
  • Toys
  • Trim Plates
  • Typewriter Parts
  • Vents
  • Vials
  • Wedges
  • Window Lift Parts
  • Wire Shields

SINCERE TECH’s Capabilitiesplastic mold manufacturing company

SINCERE TECH’s molding machines range from 60-ton to 2000-ton. We are equipped to mold products from many varieties and grades of resin, each with different properties, including:

  • Thermoplastic commodity resins
  • Engineering grade resins (filled and unfilled)
  • Elastomeric materials

Read more details about our Production Facility and Equipment.

Additionally, our facilities can provide a number of secondary operations, such as:

  • Assembly
  • Pad Printing
  • Painting
  • Drilling
  • Ultrasonic Welding
  • Milling
  • Ultrasonic Insertion

Read more details about our Production Facility and Equipment.

You are welcome to send us your new project, we will quote you with 24 hours, we will offer you the best solution for your new project to save you price, not only the injection molding process, but rubber molding, metal parts etc.


 Injection Molding & Injection Molding China

We are an Injection molding China Company, professional in Injection mold and injection molding manufacturing, Sell plastic parts from China to the world, we have been provided with the best quality the over 40 happy customers which they are fully satisfied by our quality and service, you are welcome if you need our supporting, we sincerely hope we could service in the near future and you will be surely happy as same as our other happy customers.

A variety of commercial methods are used to produce thermoplastic plastic products. Each has its specific design requirements, as well as limitations. Usually, part design, size, and shape clearly determine the best process. Occasionally, the part concept lends itself to more than one process. Because product development differs depending upon the process, your design team must decide which process to pursue early in product development. This section briefly explains the common processes used for thermoplastics from Bayer Corporation. Injection Molding, today lots of companies buy molding parts from injection molding China companies, if you need injection molded parts for your business, you need really think about this.

Do you need injection molding or are you looking for injection mold china partner to make plastic molds and produce the parts for you? Send us an email we will reply to you with two working days.

If you want to know more knowledge, please go to our other injection moulding page.


Plastic Injection Molding Company


Injection molds are defined as the general manufacturing process adopted to make plastic parts for various products. This method is used to make parts that differ in size, application, and complexity and the process involves the use of a machine called an injection molding machine along with molds and raw plastics. This process involves melting the plastic in a molding machine along with injecting it into a mold from a cooled place and compacted it into the final product.

One of the main and fast processes, Injection molding is a popular method for producing fabricated plastic products. All kinds of goods are produced using this technique be it household goods or engineering equipment. There is a series of activities carried out at the Plastic Injection Molding Company that are highlighted and explained in this article that will help you understand the work of the organization and open it up if you are an entrepreneur.Injection mold China


The advantage of using a Chinese mold manufacturer is that there are more financial savings compared to western plastic injection or production. The cost savings involved in-mold construction are around 30% to 50% when compared to U.S. mold makers. Another advantage of them is the fast production of designs along with the very fast delivery of plastic product samples.

There are other advantages such as making greater capacity and the possibility of finishing cheap products such as silkscreens, sublimation techniques, tempo printing, stamp printing, etc. It’s also economical and has fast choices for manual assembly. It offers various packaging options such as cardboard boxes, blistering or products sourced from different companies.

Other main advantages include the availability of complex components and structures, high efficiency along with the production of plastic parts that are easy and simple, flexibility in terms of materials, as well as color and easy printing engineering processes. This is also the most effective way to obtain plastic products because the cost of resin and manufacturing process is much lower when compared to metal machining and other printing processes.


Chinese mold manufacturers also offer services such as giving advice on making rapid prototypes or making prototypes. They also have experience in fields such as rubber and TPR/TPE or TPO products. They have knowledge in the field of engineering plastic products and other materials along with high experience in two-component plastic injection molds.

Most manufacturers also involve 3D CAD design along with engineering and product development from its originality. They also combine rapid prototyping with the help of CNC milling from POM, PA, ABS or other plastic varieties available. Molds are usually finished in 20 to 25 days and plastic mold prices range from $1500 to $3500.


There are six main steps involved in making molds namely mounting the mold, baking the material, clamping the mold, injection of the material, cooling, and compaction of the part and discharge.

Most manufacturers also ensure quality control of products produced by plastic injection molds with inspection and analysis procedures along with complete dimensional inspection of all plastic mold components and reports sent to clients for review. Plastic injection molding machines ensure that each plastic mold is of the highest quality and thoroughly inspected for defects in terms of visual, dimensional and functional aspects before sending plastic products to clients around the world.

SINCERE TECH plastic injection mold China manufacturer offers precision injection molding services for plastic components to clients around the world for applications in various sectors such as automobiles, household appliances, and other consumer products while ensuring the high quality and strength of these products. For more details on China’s leading plastic injection mold manufacturer, please visit

product design and manufacturing

Plastic Product Design Service from

Plastic product design service according to your sketch or samples, Change Draft Directions, Initial Design Consultation, Improve Efficiency, Change Draft Directions, Eliminate Undercut, Eliminate Sink Marks

SINCERE TECH can produce a plastic product design from your concept, sketch, samples or modify your product designs for required changes on most plastic parts.

SINCERE TECH, one of the most trusted top 10 plastic injection molding companies in China that offers mold design, injection molding service, injection mold making, and engineering, will consult on the initial design, or design enhancements to help improve efficiency in the  manufacturing process, including:Plastic Product Design

  • Changing draft directions
  • Design concessions for radii and step-throughs
  • Undercut elimination
  • Coring to eliminate sink marks

All the above design improvement has no cost

Perfect Plastic Product Design will make High-Quality Molds, high-efficiency molding production, cost saving on both molds and molded parts

Craftsmen at SINCERE TECH are capable of constructing intricate and efficient molds quickly, whether they be simple single-cavity mold or complex multiple cavity mold. All SINCERE TECH molds are designed to use high-quality mold bases and mold steels; and are engineered for maximum process windows, ease of repair and long life.

We have a wide range of manual, automatic and computerized mold making equipment to accomplish our goal, including:

  • Mills
  • Grinders
  • EDM Machines
  • Drills
  • Lathes
  • Saws
  • CNC Machining
  • CNC Programming
  • Design equipment and software
  • Inspection and Measurement
  • Polishing Tools

Our plastic mold makers are fully qualified and skilled at using modern production techniques. Using our computerized CNC (Computer Numeric Coordinates) System (CAD/CAM), SINCERE TECH team are able to produce new custom molds with cost-saving speed and accuracy or troubleshoot your existing molds.

Whether the job calls for conventional, hot, or insulated runner systems, SINCERE TECH toolmakers have the experience to design and build the mold correctly.

Advanced Plastic mold making technology allows us to design and produce molds for a wide variety of plastic part applications,

If you have your plastic prodcut design ready and look for plastic mold making service, you are welcome to send us your design, we will offer you the best price. If you only have samples or sketch, you are welcome to contact us as well, we will make plastic product design, mold making, injection molded parts for you by the best solutions,

We never share your data with any other third parties, we can sign NDA document to protect your project,

hdpe injection molding

China Custom Plastic Injection Molding Service – Affordable Custom Parts

Sincere Tech is a well-established custom plastic injection molding company in China that provides high-quality custom tooling and molding solutions. We provide solutions for manufacturing services such as raw material testing, tool manufacturing, molding, surface finishing, and product testing to suit the various needs of customers. Our team of engineers is highly qualified and can ensure the professional execution of orders of any size and complexity.

Our Custom Plastic Injection Molding Services Include:

Custom Rapid Prototype Tooling and Low Volume Injection Molding.

  • Perfect for prototyping or creating a few pieces of the product at a time.
  • They can range from simple machines capable of producing between 50 to 5,000+ parts.

Custom Bridge Tooling and Medium Volume Rapid Injection Molding

  • Ideal for market entry strategies.
  • Manufactures 5000 to 100000+ components.

Custom Production Tooling and High Volume injection Molding.

  • It was created for the mass production of bicycles.
  • Produces 100,000+ parts.

With over a decade of experience in On-demand manufacturing solutions, we have helped many of our customers produce their parts using custom plastic injection molding. We are excited to work with you and bring your products to life accurately and quickly.

custom plastic injection molding China

What is Custom Plastic Injection Molding?

Custom Plastic Injection molding is an efficient process of manufacturing custom plastic parts in any quantity, small, medium, or large. This involves the use of molds where the molten plastic material is poured and allowed to cool and harden to the required shape. This cycle is repeated hundreds or even thousands of times, which enables the production of several custom plastic parts at once. The cost of the custom mold is distributed over the number of parts manufactured, which makes the price per unit only a few $$s or even less. Custom plastic injection molding guarantees uniformity of the parts produced and has more material, color, cosmetic, polish, and surface finishing possibilities than 3D printing or CNC machining.

Sincere Tech is a specialized custom plastic injection molding company that provides prototypes and short-run and volume-run custom molding services. We offer custom plastic parts that meet your exact design requirements while being affordable. Our professional engineering department consults with every injection molding quote offered to customers to facilitate an easy transition from design to production.

Types of Custom Injection Molding Services at Sincere Tech

Sincere Tech is a prestigious custom plastic injection molding services company in China that specializes in providing different types of molding services for low to high-volume production requirements. Here’s a brief overview of the types of injection molding services we provide:

1. Custom Clear Injection Molding

Process: This is a process that involves the use of plastic materials that are transparent to produce parts that need to be precise or semi-clear.

Applications: Suitable for products such as lenses, light covers, and other translucent parts.

Normal material: PC, PMMA, PS, ABS, etc.

2. Custom Insert Molding

Process: Insert molding is a technique in which metal or other parts are placed inside the plastic during injection molding.

Applications: Typically used for manufacturing components with metallic inserts, including threaded bolts, bearings, or electrical contacts.

Normal material:  ABS, PC,PP,PA66, PMMA, PE, PET, PPT, etc

3. Custom Over Molding

Process: Overmolding is a two-shot process in which a second material is molded over an existing part or base material.

Applications: Ideal for manufacturing components made of several materials, for instance, handles with soft grips or cases with seals.

Normal materials: TPE, TPU, ect.

4. Custom Thread Molding

Process: This technique involves the formation of internal or external threads in the molded plastic part without the need for subsequent screw cutting.

Applications: Applicable to parts that require screwing or joining, for instance, caps, closures, and threaded inserts.

Normal material:  ABS, PC,PP,PA66, PMMA, PE, PET, PPS, etc

5. Custom Rubber Molding

Process: Rubber molding entails using elastomers to create flexible, strong parts and components.

Applications: It is recommended for use in gaskets, seals, o-rings, and other components that need to be flexible and have high recoverable elasticity.

Normal material: Rubber.

6. Custom Silicone Rubber Molding

Process: Silicone rubber molding uses silicone to create parts that are thermally stable and able to withstand weathering.

Applications: Applicable for use in medical devices, kitchenware, seals, and gaskets.

Normal material:  Silicone, rubber.

Our technical experts are committed to delivering the best molding services that meet your precise needs. From prototypes to short runs and total production runs, our team of engineers will help make your project successful. Explore China’s best custom injection molding services today, or discuss your injection molding requirements directly with our representative.

China Mould Maker

Customized Injection Molding Costs

The price of customized injection molding is not standard and depends on how you engage our services and your project specifications. Generally, the cost can be broken down into two main components: the total cost of production and the price of the mold or the tools that are used in the production process.

Tooling Cost/Injection Mold Cost/Rapid Tooling Cost

Making the custom mold entails other costs that are not included in the total cost of production. The custom mold cost is paid at the beginning of the injection molding process and depends on the blueprint design of the mold. The time it takes to create a mold depends on the mold’s design and its intricacy. Plastic parts production is initiated only after the mold has been made or finalized. There are two types of manufacturing processes for mold creation: rapid manufacturing and conventional manufacturing, with different prices and production approaches.

If you want to know more about custom mold cost, pleae go to injection molding cost and how much does an injection mold cost page to know more.

Key Factors Influencing Customized Injection Molding Cost

The following steps are involved in customizing injection molding molds.

Design Blueprint and Complexity

The level of preparedness and the level of complexity of the product design is a key factor that influences the costs. The complex designs require more complex molds and take more time to make.

Raw Materials

The cost is determined by the type and quality of the material used on both the plastic products and the mold. In general, it can be stated that the acquisition of higher-grade materials is more costly than that of lower-grade ones.

Manufacturing Technology

The choice between rapid manufacturing and traditional manufacturing technologies is based on cost. Although rapid manufacturing is faster, it is expensive.

Tooling Process

The following are some of the factors that can be associated with the tooling cost: the design of the mold, its features, and the material used to construct it.

Project Requirements

The cost may also be affected by schedules and certain specifications of the project. This may force the client to order rush services which are usually costly.

Additional Processes

Other operations such as branding, pad printing or any other special operations will also add to the price.

The cost of injection molding is determined by the design of the product, the quality of the material used, the technology used in production, and other factors of the project. At Sincere Tech, we offer tailor-made solutions to your needs, whether it is a one-off or a batch run. For more information and to get an online quote for your project, please do not hesitate to contact us.

custom plastic injection molding services

Custom Plastic Injection Molding Method

Custom plastic injection molding entails the use of injection molds, and the quality of the final products depends on the molds and their design. In addition to the molds, technical know-how and experience are crucial in arriving at the structure and design of the injection products and the molds.

Mold-making is one of the core departments in our company, equipped with the most modern tools and employing highly qualified and scientifically oriented staff. This makes it possible for us to have good quality molds and also makes it possible to offer the molds at an affordable possible price and within the shortest time possible.

We also provide technical consulting services for selecting appropriate plastic materials for products. When our customers use large plastic molds for their products, they can benefit from our experience in different engineering plastics. We deal with all types of engineered plastics, including conventional plastics and high-performance thermoplastics, to ensure that we select the right material for the particular application.

Our competencies include all types of large plastic molds and materials, and it has been realized to incorporate high-performance thermoplastics into the large plastic molding.

In addition to the general categories of thermoplastic injection molding services available today, our company provides several particular injection molding services to meet our client’s requirements. These are specific processes designed for specific uses, needs, and problems.

Thermoplastics Materials We Processed

At our In-house set-up, we process the following custom injection molded plastics;

ABS (Acrylonitrile Butadiene Styrene)

ABS is a general-purpose thermoplastic with good impact strength and a high degree of hardness. Its tensile yield strength is 6,500 psi, suitable for many engineering applications that demand strength and durability. Go to ABS injection molding to know more.

Polypropylene (PP)

Polypropylene is a thermoplastic polymer widely used in many applications because of its flexibility and strength. It has a tensile yield strength of 4,900 psi and is used where good chemical resistance and processability are needed. Go to PP injection molding to know more.

Polyoxymethylene (POM):

POM, also known as acetal, is a thermoplastic material with low friction, high stiffness, and good dimensional stability. With a tensile yield strength of 10,000 psi, it is suitable for applications that require high accuracy and mechanical strength of the parts. Go to POM injection molding to know more.


Polycarbonate is a thermoplastic polymer with high heat resistance and impact resistance. It has a tensile yield strength of 9000 psi and is used in applications that demand clarity and strength like eyeglasses and electronics. Go to Polycarbonate injection molding to know more about PC molding.

Polycarbonate/ABS Blend:

This is a combination of polycarbonate and ABS that results in the formation of strong and durable parts. It has a tensile yield strength of 8000 psi and is mainly used in automotive and electronic housing industries. Go to PC/ABS injection molding to know more.

PVC (Polyvinyl Chloride):

PVC is a polymer that has good electrical insulating property, high hardness, and good mechanical property. It has a tensile yield strength of 4,500 psi and this makes it suitable for use in many industries and construction activities.


Nylon is a strong polymer material with high elongation and relatively good wear resistance. It has a tensile yield strength of 8,400 psi and is applied to gears, bearings, and wear-resistant components. Go to Nylon injection molding to know more.

Nylon 30% Glass Fiber:

This nylon composite has enhanced mechanical strength and thermal stability, and the tensile yield strength is 18,000 psi. It is applied in areas where high strength and stiffness of the structure are required. Go to Glass filled Nylon injection molding to know more.

Acrylic (PMMA):

Acrylic is quite popular for its strength, which makes it ideal for use in areas likely to be exposed to pressure. It is commonly used in applications that need to be transparent. It has a tensile yield strength of 9400 psi and is used for lenses, displays, and light guides. Go to PMMA plastic injection molding to check more.


Styrene is another type of plastic that is lightweight and has high impact strength and toughness. It has a tensile yield strength of 6,530 psi and is employed for packaging, disposable cutlery, and modeling.

Polyether Imide (PEI):

PEI is a thermoplastic with high temperature tolerance and good mechanical properties. Its tensile yield strength of 16,000 psi makes it suitable for aerospace, automotive, and medical applications.

custom plastic injection molding

Quality Assurance & Surface Finishing Options For Custom Injection Molded Parts

At Sincere Tech, we know how vital it is to produce high-quality and accurately shaped custom molded parts. When you request an injection molding quote, we provide a variety of quality inspections and finishing options depending on your application’s needs.

  • Designing for Manufacturability Feedback (DFM): Our specialists give detailed comments on your design to make sure that your product is suitable for manufacturing without possible problems, which could slow down the process.
  • Scientific Molding Process Development Report: Our scientific molding reports cover the development process and guarantee that the mold will perform as intended and that the quality of the parts will not deteriorate over time.
  • In-Process CMM Inspection and Machine Monitoring: Our CMM checks and real-time monitoring of the machines ensure that the molding process is accurate and high-quality.
  • First Article Inspection (FAI) and Process Capability Report with GD&T: Our FAI and process capability reports, inclusive of GD&T, assure you that the first set of molded parts meets all the required standards and tolerances.

Wrapping Up

In conclusion, it’s economical and effective to get custom plastic molded parts made in China. China is a preferred destination for manufacturing high-quality plastic components because of its skilled workforce, competitive prices, and advanced manufacturing capabilities. Understanding the factors we have discussed and using the tips for collaboration, you can successfully apply the potential of custom plastic injection molding china industry to introduce new developments and high quality in your production.


Q1. What is Plastic Injection Molding?

Injection molding is a manufacturing process that involves using injection to force molten material into a mold. The plastic cools and hardens into the intended shape; each round is known as a molding cycle or molding shot.

Q2. How Much Does Plastic Injection Molding Cost?

The cost of injection molding varies from $100 to over $ 100,000. The cost factors that are considered include the type of material used, size of the part, quantity ordered, complexity of the part, number of cavities, cycle time, and labor costs.

Q3. How Much Does Injection Molds Cost?

Injection Mold Cost varies depending on the complexity of the mold and the material used in its construction. Injection Mold costs are estimated to be between $1,000 and $100,000+ or even more. The cost of molds is also influenced by the complexity of the mold and its size, where simple and small molds are cheaper than complex and large molds with multiple cavities and features.