Mold manufacturing

Important Things About Plastic Injection Molding Machine

Since the injection moulding process was invented, the plastic industry and the big business opportunity of injection molding have become a commercial enterprise which is potentially thousands to millions of US dollars. Injection molding has given an important role in the development of the economy in the USA. This allows industrial and consumer goods to be important for many industries, with affordable and durable prices.

Injection Molding Machine Function

This machine can be classified into three categories, namely: Multipurpose machine, precision machine/narrow tolerance and high-speed thin-wall machine. These three types require assistive equipment to function. These supporting equipment include dryers (resins), handling equipment, granulators, temperature control and mold cooling, handling equipment and parts extraction robots.plastic mold company

Many companies are specializing in quality injection moulding, but not all are identical. The best, fast, flexible, and customer-oriented, in both large and small quantities. These companies usually have state-of-the-art facilities with large scale thermoplastics and thermosetting capabilities, computer-assisted manufacturers, qualified machine operators, and quality assurance equipment.

Knowing The Components Of Injection Molding Machine

In general, the basic injection molding machine consists of a mold system, control system, injection system, hydraulic system, and Pinpin system. The tonnage clamp and shot size are used to identify the dimensions of a thermoplastic injection molding machine, which is a major factor in the overall process. Another consideration is the thickness of the mold, pressure, injection rate, the distance between the binding rod, and the screw design.

Injection molding machine converts raw plastic granules or granules into final mold parts using thermoplastic smelting, injection, conditioning, and cooling cycles.

Adjusting The Injection Mold

When you or your company need a plastic product of a particular type and size, you should go to a custom injection molding company. This manufacturer can create plastic components for specific applications: they can adjust almost all plastic components according to their needs. They can place your logo or message, produce unique colors and designs and pack them to your liking and needs.

Select A Custom Injection Maker Company

Most custom injection molding companies can make all the plastic products you specify, but not all of them make an extra effort to process  “settlement services,” such as decorating, assembling, labeling and packaging. Some even have a design group that can help customers design plastic parts and molds. From manufacturing prototypes and quick tools to injection molding, to plastic and ultrasonic welding and stamping, these companies can help you in every step. Choose a factory that offers this additional benefit. You can minimize spending, optimize effort, money and time.

Check the programming of manufacturing companies and logistics systems. They should be able to manage their shipping needs, no matter how demanded they are. You should also look for companies that apply strict controls to monitor the entire process of molding custom injection. They must have the latest inspection equipment to allow them to meet the closest tolerance and thereby provide consistent quality.

Sincere Tech is a plastic mold China company, provide the best quality custom plastic mold & molding parts, if you are interesting you are welcome to send us your requirement for a quotation.

Plastic Product Design Service

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 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 China plastic mold/molding manufacturing companies in 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 Service

  • 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 toolmakers 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 part 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 part 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,

EDM Service

EDM Machining: Electrical Discharge Machining, Spark Machining / Eroding, Metal 3-D Geometry, Accurate Repeatability, Intricate Detail, Sharp Corners, Patterns

Electrical Discharge Machining (EDM) from SINCERE TECH provides CNC (computer numerical control) accuracy for creating 3-D geometry in hardened steel and other metals like brass, copper, and aluminum. It can be used to create simple or complex shapes. SINCERE TECH has 11 EDM machines, one AgieCharmilles EDM machine and one Sodick EDM machine for mirror surface EDM machining, two double heads EDM machines for high-efficiency EDM machining requirement

The EDM process is an excellent solution when a high degree of accuracy, and/or repeatability, is required.

EDM: What It Is and What It Does

Sometimes referred to as spark machining or spark eroding, EDM is a method of removing material by a series of electric discharges using copper electrodes or Graphite electrodes, rapidly arcing between an electrode acting as the cutting tool and the workpiece, in the presence of a dielectric fluid.EDM service

EDM is used to burn material away from the metal mold component, to add:

  • Intricate detail
  • Sharp corners
  • Patterns

The EDM cutting tool is computer-guided along the desired path very close to the work but does not come in physical contact with the piece, preventing plastic injection tooling marks.

A continuous sparking action produces a series of micro-craters on the workpiece and removes excess material by melting and vaporization. The particles are then washed away by a continuous stream of dielectric fluid.

EDM Services: SINCERE TECH Provides Quality Results and fast service for your plastic injection mold

SINCERE TECH’s EDM services can give your design potential a boost. You will be able to place intricate designs and logos in a wide variety of components with top quality results. This process can be used to produce:

  • Faceplates
  • Nameplates
  • Bezels
  • Buttons
  • Switches
  • Gears
  • And much more!

EDM can also be used in fabrication, for tapping holes into parts, and similar procedures.

If you are looking for a plastic mold supplier that offer you fast delivery, high gloss plastic molding parts, texture surface plastic mold, and all other custom plastic injection tooling or molded parts, you are welcome to send us your requirement, we will offer you the best price and quality.

How to Buy Custom Plastic Packaging Containers

What is Plastic Packaging Containers

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

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

Step to order your own Plastic Packaging Containers

The first step in ordering your custom plastic packaging containers would be to determine the size and shape of the container that you need. If you need a smaller container, or a basic plastic mold then you are looking at spending less money. Whereas if you are wanting a plastic packaging container in an odd shape, you will be spending a little more.
Next, you would determine what quality of plastic you need the containers to be. You would need to look at different aspects for this, such as what products are going in the containers, how the custom plastic packaging containers are going to be stored, and what climate the containers will be stored in. This is an important step because you don’t want to order a container that is not going to fit your specific needs.
After you have determined the size, shape, and quality of your plastic packaging container, you will need to decide what you want the product to look like. This means deciding whether you want custom colors or extra design. Then, you will need to determine how many containers you need. If you need the containers for a wedding, for example, you wouldn’t need as many as you would for a business that needs containers for a product. all of those process we called part design and delvelopment.
In addition, you would determine how quickly you need the product. If you need a custom product as soon as possible, you would want to look at companies with in house engineers, that are located in your country. However, if you can wait some time, you could be saving money if you went for a larger manufacture overseas, like finf a plastic molding company to handle your custom plastic mold and massive products production.
Furthermore, you will need to decide whether you need a label on the containers. This is a pretty simple step, but if it’s missed, you could end up with thousands of containers that were ordered incorrectly.
Finally, you would choose the business that you want to order from, let them know your vision, and wait for your arrival. Choosing a business can be a difficult decision, and can be time consuming because you don’t want to make a mistake when mass producing something important. As long as you follow these steps, you are headed in the right direction to getting the custom plastic packaging containers you need.

Sincere Tech, we are one of the top 10 best leading plastic mold companies in China. We offer wide range of custom Plastic Packaging Containers, 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 Plastic Packaging Containers, die casting and machining needs, we will offer you the best quality and fast lead time, contact us for quote in 24 hours.

Custom Plastic Injection Molding China

Custom Plastic Injection Molding China

Custom Plastic Injection Molding China

Custom plastic injection molding has emerged as a game-changer in the manufacturing industry, offering a versatile and efficient solution for producing high-quality plastic components. China, known for its robust manufacturing capabilities, has become a prominent destination for custom plastic injection molding. In this article, we will explore the process, benefits, and factors to consider when choosing a custom plastic injection molding company in China.

I. Introduction to Custom Plastic Injection Molding

Custom plastic injection molding in China involves the production of plastic parts tailored to specific designs and requirements. It is a widely utilized manufacturing process in which molten plastic is injected into a mold cavity, allowing it to cool and solidify to form a precise and customized plastic component. Here’s an introduction to custom plastic injection molding in China:

II. Overview of Plastic Injection Molding in China

Plastic injection molding is a widely used manufacturing process in China, and the country has become a global hub for injection molding due to its cost-effective production capabilities, advanced technology, and extensive experience. Here’s an overview of plastic injection molding in China:

1. Industry Landscape:

  • China has a well-established and highly competitive plastic injection molding industry. The sector includes a wide range of manufacturers, from small-scale facilities to large enterprises with advanced production capabilities.

2. Cost-Effectiveness:

  • One of the key advantages of choosing China for plastic injection molding is cost-effectiveness. The lower labor costs and efficient production processes contribute to competitive pricing, making it an attractive option for businesses seeking cost savings, especially for large production runs.

3. Technological Advancements:

  • Chinese injection molding companies often invest in state-of-the-art machinery and technologies. The industry has embraced automation, robotics, and Industry 4.0 principles to enhance efficiency, precision, and production capabilities.

4. Materials and Expertise:

  • China offers a diverse range of plastic materials for injection molding, catering to various industry requirements. Many Chinese manufacturers have accumulated significant expertise and experience in working with different types of plastics, including engineering plastics and specialty materials.

5. Customization and Prototyping:

  • Chinese injection molding companies provide services for customization and prototyping. This allows clients to iterate and refine their designs before moving into full-scale production, reducing the risk of errors and ensuring the final product meets specifications.

6. Quality Control:

  • Reputable Chinese injection molding companies adhere to international quality standards. They implement rigorous quality control processes to ensure that the manufactured products meet or exceed the specified requirements. Certifications such as ISO 9001 are common indicators of a commitment to quality.

7. Scalability:

  • China’s manufacturing sector is known for its scalability. Injection molding facilities can handle both small-scale prototype runs and large-scale mass production, providing flexibility to accommodate varying production needs.

8. Global Supply Chain Integration:

  • Chinese injection molding companies are integral parts of the global supply chain. They have well-established shipping networks and efficient transportation systems, facilitating the export of finished products to markets worldwide.

9. Sustainability Initiatives:

  • The Chinese injection molding industry is increasingly focusing on sustainability initiatives. This includes the adoption of eco-friendly practices, the use of recycled materials, and efforts to reduce the environmental impact of manufacturing processes.

10. Challenges and Considerations:

  • While China offers numerous advantages, businesses should be aware of potential challenges, including language barriers, intellectual property concerns, and variations in regulatory standards. Thorough due diligence and effective communication are crucial for successful collaborations.

In summary, China’s plastic injection molding industry is characterized by its cost-effectiveness, technological advancements, and the ability to cater to a wide range of manufacturing needs. As with any global manufacturing partnership, careful consideration of the chosen manufacturer’s capabilities, reputation, and adherence to quality standards is essential for a successful outcome.

III. Understanding the Process of Custom Plastic Injection Molding

Custom plastic injection molding is a versatile and widely used manufacturing process that allows for the production of complex and customized plastic components. Here’s an overview of the process:

1. Product Design:

  • The process starts with the design of the plastic product or component. Engineers create a 3D model using Computer-Aided Design (CAD) software. This design considers factors such as the intended function, structural requirements, and material selection.

2. Tooling Design:

  • Once the product design is finalized, the next step is the design of the mold or tool. This mold is a precise and detailed negative of the final part and is made from materials such as steel or aluminum. The mold design is critical to achieving the desired shape and features.

3. Tooling Manufacturing:

  • The mold is manufactured based on the tooling design. This involves precision machining and, in some cases, additional processes such as EDM (electrical discharge machining) for intricate features. The quality of the mold is crucial for the accuracy and consistency of the final product.

4. Material Selection:

  • The appropriate plastic resin is selected based on the product’s requirements. Factors such as strength, flexibility, heat resistance, and cost are considered. The chosen material is then loaded into the injection molding machine.

5. Injection Molding Machine Setup:

  • The injection molding machine is set up with the mold installed. The plastic resin is heated to a molten state and injected into the mold cavity under high pressure. The machine parameters, including temperature, pressure, and injection speed, are carefully controlled.

6. Injection Molding Process:

  • The molten plastic fills the mold cavity and takes its shape. The material then cools and solidifies within the mold. The cooling time is crucial to ensure the part solidifies completely and maintains its desired properties.

7. Cooling and Ejection:

  • The mold is equipped with cooling channels to expedite the cooling process. Once the plastic has solidified, the mold opens, and the newly formed part is ejected. The ejection system ensures the part is released without damage.

8. Quality Control:

  • The produced parts undergo quality control checks to ensure they meet the design specifications. This includes visual inspections, dimensional measurements, and other testing methods. Reputable manufacturers adhere to strict quality control standards.

9. Post-Processing (Optional):

  • Depending on the product requirements, post-processing steps may be performed. This can include trimming excess material, adding surface finishes, or assembling multiple components into a final product.

10. Packaging and Shipping: – The finished custom plastic parts are packaged according to client specifications. The manufacturer handles logistics, including packaging and shipping, to ensure the timely delivery of the products.

Benefits of Custom Plastic Injection Molding:

  • Versatility: The process allows for the production of complex and intricate designs.
  • Cost-Effective: Economical for large production runs.
  • Consistency: High repeatability and consistency in part production.
  • Material Variety: Can work with a wide range of plastic materials.
  • Efficiency: Rapid production cycles and short lead times.

It’s important for businesses to work closely with their chosen injection molding partner, providing clear design specifications and communication to ensure that the final product meets their expectations.

IV. Factors to Consider when Choosing a Custom Plastic Injection Molding Company in China

  1. Experience and Expertise: Look for a company with a proven track record in custom plastic injection molding. Experience brings expertise in handling complex projects and ensures quality results.
  2. Quality Assurance and Certification: Ensure that the company adheres to strict quality control standards and holds relevant certifications, such as ISO 9001, to guarantee the production of high-quality plastic components.
  3. Manufacturing Capabilities and Capacity: Evaluate the company’s manufacturing capabilities, including the range of materials they can work with and their production capacity to meet your project requirements.
  4. Cost and Pricing Considerations: China’s competitive pricing advantage is a significant factor to consider. However, ensure that the quoted price aligns with the quality and service you expect.
  5. Communication and Language Support: Effective communication is crucial for successful collaboration. Choose a company that offers clear communication channels and provides language support to bridge any language barriers.

V. Benefits of Choosing Custom Plastic Injection Molding in China

  1. Cost-effectiveness and Competitive Pricing: China’s manufacturing infrastructure and economies of scale allow for cost-effective production, enabling competitive pricing for custom plastic injection molding projects.
  2. Vast Manufacturing Infrastructure and Resources: China’s extensive network of suppliers and manufacturers ensures a seamless supply chain, providing access to a wide range of materials and resources.
  3. Skilled and Experienced Workforce: China boasts a skilled and experienced workforce, well-versed in the intricacies of custom plastic injection molding, guaranteeing top-notch quality and efficiency.
  4. Quick Turnaround Time and Efficient Production: China’s manufacturing prowess enables shorter lead times and efficient production, ensuring timely delivery of your plastic components.
  5. Ability to Handle Large Production Volumes: With its vast manufacturing capacity, China can handle large production volumes, making it an ideal choice for high-volume projects.

VI. Case Studies and Success Stories of Custom Plastic Injection Molding in China

Real-life examples of successful custom plastic injection molding projects in China highlight the industry’s capabilities and the positive outcomes achieved by partnering with reliable manufacturers. Testimonials from satisfied customers further validate the efficiency and quality of custom plastic injection molding in China.

VII. Tips for Successful Custom Plastic Injection Molding in China

  1. Effective Communication and Collaboration: Maintain open lines of communication with your chosen manufacturer, ensuring clarity and transparency throughout the project.
  2. Clear and Detailed Project Specifications: Provide comprehensive project specifications to avoid misunderstandings and ensure that the final product meets your requirements.
  3. Regular Quality Control and Inspection: Implement a robust quality control process to ensure that the manufactured components meet the required standards and specifications.
  4. Continuous Improvement and Innovation: Encourage your manufacturing partner to embrace innovation and continuous improvement, enhancing the quality and efficiency of the injection molding process.


Custom plastic injection molding in China offers a cost-effective and efficient solution for manufacturing high-quality plastic components. With its vast manufacturing infrastructure, skilled workforce, and competitive pricing, China has emerged as a leading destination for custom plastic injection molding projects. By considering the factors discussed and following the tips for successful collaboration, you can leverage the benefits of custom plastic injection molding in China to revolutionize your manufacturing solutions.

SINCERE TECH ( is one of the professional Custom Plastic Injection Molding China companies in China, in providing high-quality custom Plastic Injection Molding or custom plastic mold for varies industries since 2005. Our major clients are well-known manufacturers from automotive industries, Household appliance, Consumer Electronics, Communications, food package Products and medical industries from American, Europe, Japan, and Mainland. SINCERE TECH offers the best services in making custom injection molds and molding service to all of our customers.

To meet our customer’s requirements, we have employed a professional team with more than a hundred professionals specializing in engineering, tooling, manufacturing and quality assurance. This team of experts is committed to delivering the highest quality molds/products and superior personal attention every customer expects and deserves.

Beyond our profession product design, moldmaking and injection molding service team, millions of dollars of modern plastic injection machinery, CAD-CAM and equipment invested. Base on the above advantages, we are dedicated to becoming your product design, prototypes, mold making and injection partner with superior quality, shortest lead-time, cost-effective and reliable product.

Through developing and accumulating, we have mastered the whole set of integrated skill process of 3D model, tooling separation, programming, and plastic mold and molding manufacturing, with the machines as following:

We can afford to provide excellent integrated service by the software and hardware of our company.
Series of mould we developed in recent years:

Household electric product series;Custom Plastic Mold
Food package products;
Medical equipment series;
Drinking machine series;
Security and protection equipment series;
Electric product series;
Audio and video series;
Computer peripheral product series;
Gift series;

We are good at designing the bi-colored moulds (two-shot mold). multiple cavity molds, thin all mold, gas-assist injection molding, insert molding and plug additional moulds, etc, which we developed are broadly approbated and very popular with our clients.

With United cooperation and absorbed plastic injection mold industry, we have been concentrating on development, even to be the lead manufacturer in the field of mould and plastic. We hope sincerely the mutual benefit cooperation can be available between us, basing on our principle of CLIENTS’ SATISFACTORY IS WHAT WE PROMISE.

SINCERE TECH Custom Plastic Injection Molding China company welcomes you to visit our mold manufacturer China Factory. To learn our professional custom plastic Injection Molders Design, to get the best and competitive plastic injection molds and moldings.