The Best Plastic to Use in Injection Moulding

 



Plastic injection moulding is a process that uses granular plastic that is heated and forced under high pressure into a mould cavity. The mould cavity is made of steel or aluminium and can be customised to produce many different shapes. The plastic cools down and solidifies in the form of the cavity. Once the product has been removed from the cavity, it can be painted or decorated as required.

Plastic injection moulding is a highly versatile manufacturing method. It is used to mass-produce many different plastic products, from phone cases to plastic lunchboxes. In this article, we look into what material is best for injection moulding.



Choosing the suitable plastic for your injection moulding process is crucial for the success of your project. Ideally, you should work with an experienced injection moulding company that can advise you on the best materials to use.

Some aspects to consider include:

·         Strength

·         Flexibility

·         Durability

·         Ability to withstand environmental conditions (like high or low temperatures, moisture, sunlight, chemical exposure)

·         Quality

·         Value for money

·         Colour

The following are some of the best plastics to inject moulds.

Acetal (POM): Acetal (polyoxymethylene or POM) is a solid yet flexible thermoplastic. It's lightweight and has excellent mechanical properties. Acetal is easy to machine, making it a common choice for many applications. However, this material isn't suitable for high heat resistance applications.

Polypropylene (PP): Polypropylene is a tough, rigid plastic with good chemical resistance and excellent moisture resistance. It's inexpensive and can be used in a wide range of applications. However, polypropylene has relatively poor impact strength when compared to other plastics.

Nylon (PA): Nylon is a robust and light plastic with good abrasion resistance and tensile strength. Nylon can be used at elevated temperatures and offers good electrical insulation properties as well as chemical resistance to alcohols and alkalis. However, nylon can be susceptible to water absorption, affecting its mechanical properties over time.

When it comes to selecting a plastic for your custom moulded components, it is crucial to consider several factors:

1.       The Cost of Plastic

2.       Injection Moulding Process

3.       Mechanical Properties

4.       Weather Resistance

5.       Aesthetics

The type of plastic you use in your product can make the difference between a successful product and one that customers reject. Consumers are more conscious than ever about the environmental impact of their purchases, so it's vital to select recyclable materials with minimal impact on the environment.

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