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Plastic Injection Molding Machines: Revolutionizing Rapid Prototyping.

Plastic injection molding machines have revolutionized the manufacturing industry, particularly when it comes to rapid prototyping. These machines create high-quality plastic parts with great precision and speed. In this article, we'll explore what plastic injection molding is, how it works, and how it has transformed the world of rapid prototyping.

What is Plastic Injection Molding?

Plastic injection molding is a manufacturing process that involves injecting molten plastic into a mold cavity at high pressure. The plastic then cools and solidifies, taking the shape of the mold. This process is repeated to create multiple identical parts.

How Does Plastic Injection Molding Work?

There are six stages in the plastic injection molding process:

1. Clamping: The two halves of the mold are securely clamped together.

2. Injection: Molten plastic is injected into the mold cavity under high pressure.

3. Dwelling: The molten plastic is left in the mold to cool and solidify.

4. Cooling: Once the plastic has solidified, it is cooled to a temperature where it can be safely ejected from the mold.

5. Ejection: The part is ejected from the mold by pushing it out with ejector pins.

6. Recycling: Any excess plastic is recycled and reused in future production runs.

Advantages of Plastic Injection Molding for Rapid Prototyping

Plastic injection molding has numerous advantages when it comes to rapid prototyping. Firstly, it is a fast and repeatable process, allowing manufacturers to quickly produce multiple identical parts. It also offers high accuracy and precision, ensuring that the parts produced are of a high quality and meet exact specifications. Plastic injection molding is also a cost-effective process, with low per-unit costs for large-scale production runs.

Applications of Plastic Injection Molding in Rapid Prototyping

Plastic injection molding has a wide range of applications in rapid prototyping. It is commonly used to create parts for the automotive, electronics, and medical industries. Parts created using plastic injection molding include enclosures, housings, brackets, and gears, among many others.

Challenges and Considerations for Plastic Injection Molding for Rapid Prototyping

Despite its many advantages, plastic injection molding does have some challenges and considerations to be aware of when using it for rapid prototyping. These include design considerations, material selection, and finding the right manufacturing partner.

Conclusion

Plastic injection molding has transformed the world of rapid prototyping, offering a fast, accurate, and cost-effective way to produce high-quality plastic parts. By understanding the process and its advantages and challenges, manufacturing companies can harness the power of plastic injection molding to accelerate their prototyping and production runs.

plastic injection molding machines rapid prototyping

On-demand Rapid Injection Molding

Sigma’s rapid tooling service helps you to have the low volume to large volume plastic parts done, with no compromise on the material selection.

  • No MOQ required
  • Get the rapid tooling as fast as 2 weeks
  • Free DFM
  • 24/7 engineering support

Our rapid injection molding Application

Sigma Technik Limited's rapid injection molding service injects molten plastic materials into molds using injection molding machines and molds, and cools and solidifies them over a certain period of time, ultimately forming the required plastic parts. This manufacturing process is usually suitable for producing small and medium-sized plastic parts, which can obtain high-quality and precise parts in a short period of time.

Plastic Injection Molding

Injection molding is a common manufacturing process to produce low volume to large volumes of parts typically made out of plastic. The process involves injecting molten material into a mold and letting it cool to a solid-state.

Liquid Silicone Rubber Molding

Liquid Silicone Rubber is known as LSR, which is a process used to produce parts made from silicone rubber, widely used create products such as medical devices, automotive parts, baby care products, and many others.

2K Injection molding

2K injection molding is a manufacturing process in which two different types of plastic materials are molded together in a single operation to create a single homogeneous component. This process allows for efficient and cost-effective production of high-quality parts that can perform unique functions.

Overmolding and Insert Molding

Overmolding / Insert molding combines two or more materials into a single part, one of the material is usually soft and flexible, or metal. The purpose of overmolding/insert molding is to add functionality, improve grip, provide protection, or enhance aesthetics.

Mission And Vision

Rapid injection molding materials

ABS

ABS is a type of plastic with high strength, hardness, and toughness. It has good impact resistance and wear resistance, and is suitable for manufacturing shells, components, and models.

PC

PC is a transparent, high-strength, high-temperature resistant, and excellent electrical insulation material. It is suitable for manufacturing transparent components, electronic components, and automotive components.

PP

PP is a relatively flexible material with excellent corrosion resistance and high temperature resistance. It is suitable for manufacturing containers, pipelines, baby bottles, etc.

PA

PA is a material with high strength, high rigidity, and wear resistance. It is suitable for manufacturing gears, bearings, brackets, etc.

POM

POM is a material with excellent wear resistance, toughness, and rigidity. It is suitable for manufacturing gears, bearings, pulleys, etc.

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About Us

What can we do?

Sigma Technik Limited, as a prototype production company and rapid manufacturer focusing on rapid prototyping and low volume production of plastic and metal parts, has advanced manufacturing technology, one-stop service, diversified manufacturing methods, on-demand manufacturing services and efficient manufacturing processes, which can provide customers with high-quality, efficient and customized product manufacturing services and help customers improve product quality and market competitiveness.

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Rapid Injection Molding Service Application

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Rapid Injection Molding FAQs

Burrs appear on the surface of the product, which affects its aesthetics and safety. The solution can be to adjust the parameters of the injection molding machine, such as temperature, pressure, speed, etc., or to perform post-processing, such as polishing, sandblasting, etc.

The warping deformation of the product is usually caused by unstable parameters such as temperature and pressure of the injection molding machine, or improper mold design. The solution can be to adjust parameters such as temperature and pressure, or to redesign the mold.

The occurrence of bubbles inside the product may be due to the high temperature of the injection molding machine and the high moisture content of the material. The solution can be to reduce the temperature of the injection molding machine, adjust the water content of the material, increase the pressure of the injection molding machine, etc.

The product size deviation is too large, which may be caused by material thermal expansion, mold deformation and other reasons. The solution can be to adjust parameters and optimize mold design based on material characteristics.