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Combining Plastic Injection Molding with Metal: A Perfect Match of Strength and Versatility

Introduction:\

Plastic injection molding and metal fabrication are two widely used manufacturing processes. However, the combination of plastic injection molding around metal components offers a whole new level of strength, versatility, and efficiency. In this blog post, we will explore the benefits and applications of plastic injection molding around metal, highlighting its significance in various industries.

I. Understanding Plastic Injection Molding:\

Plastic injection molding is a manufacturing process that involves injecting molten plastic into a custom-designed mold. This process enables the production of complex and intricate plastic components with high precision and accuracy. From automotive parts to consumer goods, plastic injection molding has become a cornerstone of modern manufacturing.

II. The Advantages of Metal Components in Injection Molding:\

Metal components provide stability, strength, and durability to injection-molded products. By incorporating metal inserts or overmolding metal components, the overall strength and functionality of the final product are significantly enhanced. Metal inserts also improve the heat dissipation and electrical conductivity of plastic products, making them suitable for applications in electronics and automotive industries.

III. Overmolding: A Perfect Union of Plastic and Metal:\

Overmolding is a technique where plastic is injected over pre-placed metal components, creating a seamless fusion of the two materials. This process not only provides additional strength but also improves the aesthetics and functionality of the final product. Overmolding finds its application in a wide range of industries, including medical devices, tool handles, and consumer electronics.

IV. Enhancing Product Design and Functionality:\

The combination of plastic injection molding and metal offers endless possibilities for product design. The flexibility of plastic allows for intricate geometries and intricate detailing, while the strength of metal ensures stability and structural integrity. This symbiotic relationship enables the creation of innovative, lightweight, and durable products that meet the evolving needs of consumers.

V. Applications in Different Industries:

1. Automotive Industry: Plastic injection molding around metal enables the creation of lightweight yet sturdy automotive components, such as dashboard panels, door handles, and interior trim. The combination of plastic and metal improves safety, reduces costs, and enhances fuel efficiency.

2. Medical Industry: Plastic injection molding around metal is revolutionizing medical device manufacturing. By overmolding metal components with biocompatible plastics, medical devices such as surgical tools, orthopedic implants, and even prosthetics can be produced with improved ergonomics, better grip, and enhanced functionality.

3. Electronics Industry: Overmolding metal connectors or circuitry with plastic offers superior encapsulation and protection against moisture, shock, and vibration. This makes it ideal for applications in consumer electronics, where durability and aesthetics are crucial.

Conclusion:\

The combination of plastic injection molding around metal components opens up new possibilities in terms of product design, functionality, and performance. This technology allows for the creation of lightweight, durable, and cost-effective products, making it highly sought after in industries ranging from automotive to medical and electronics. With continuous advancements in materials and manufacturing techniques, the future looks promising for plastic injection molding around metal, and we can expect to see its applications expand even further in the years to come.

plastic injection molding around metal

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.

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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.