Injection Moulding: What It Is and What Its Benefits Are

Injection moulding is one of the most affordable and versatile ways to produce rubber and plastic items, presenting a great opportunity for entrepreneurs and small businesses.
Here, we explain what injection moulding is and what the benefits are, to help you get your company off the ground, improve business functioning, or simply to satisfy an enquiring mind.

What is injection moulding?

Injection moulding is a manufacturing process whereby raw material is injected into a mould to produce items/parts in a variety of shapes, sizes and colours. Most commonly, thermoplastic or thermosetting polymers are used to produce each item. The process is cost-effective, reliable and efficient, and is particularly well suited to applications requiring high volumes of the same accurate, tight tolerance mouldings.

What are the benefits of injection moulding?

Plastic injection-moulded components often prove to be an economical option and are highly sought after due to the excellent repeatability that comes with the injection moulding process. In other words, the results are always consistent and this makes it ideal for producing large quantities of the same item at affordable prices.

I want to have a product injection moulded. What sort of initial tooling cost can I expect?

The cost of initial tooling is very much dependent on the size and complexity of the component in question. Also, the degree of complexity involved in the design of the mould and the number of mould cavities will affect the cost.

How do I know which polymers will be best suited to my application?

The polymer to use is determined by the nature of the proposed application. For example, impact-modified polymers are recommended for most automotive components, especially tow bar end caps, grills and so forth. Meanwhile, UV-stabilised polymers are better for components that have an outdoor application.

What is the turn-around time on injection moulding?

Turn-around times are determined by the number of mould cavities per item, the level of sophistication of the machinery and mould cooling system used, and stock agreements. The quality of a mould is often determined by how much capital is invested in the process, and this in turn affects cycle times: the better the quality of an item, the longer it generally takes to produce.

Can Plastinternational help me to get started?

Yes. We have a custom injection moulding and tool room facility, and well as design and development assistance to help you get your business or project off the ground.
Contact us online or on 010 040 3782 for assistance in meeting your business needs, or for more information on any of our plastic injection-moulded products.

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