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Why is Injection Moulding Used?

31 March 2021

Injection moulding is a manufacturing process commonly used in mass-production processes to create parts in large quantities. Plastics, as well as other materials, are used within the injection moulding process to create products such as chairs, toys, and electric goods. Injection moulding is most commonly incorporated across sectors such as;

  • Consumer goods
  • Toys
  • Automotive
  • Medical
  • Electronics manufacturing


Mass Production & Precision

 A unique selling point of injection moulding is its ability to scale mass production. After the initial investment into injection moulding, the price per unit during the process is very low and the price continues to drastically drop as more parts are produced.

Injection moulding is also perfect for intricate parts, as it incorporates many features at very small tolerances, making it a preferable option in comparison to other techniques. It also allows different materials to be easily injected into the mould to produce multiple variations.


Repeatability & Speed

Injection moulding allows the second part or product being produced to be identical to the first one. The repeatability allows for consistency across products and part reliability in high volume production. Moreover, the high output rate of the process makes it extremely popular across different sectors.

The fast production speeds of injection moulding enable the manufacturing of complex products and parts to be produced at high-speeds. This is due to the process being heavily automated with minimal human interaction.



High-speeds and low costs of manufacturing can have a negative impact on the end product if extra steps aren’t considered. Filters can be added within the injection moulding process to enhance the strength and durability of a product or part. This is a vital property within the aerospace and automotive industry and is commonly used in their plastic parts, as injection moulding offers the best option.


Multiple types of Plastic

Injection moulding is highly flexible as different materials can be easily injected into the mould to produce multiple variations of a part. Through the use of co-injection, it is possible to simultaneously inject different materials, which helps remove the stress of using a specific type of plastic. Co-injection moulding machines are designed to bring together different types of plastics to create the desired end product with accuracy and without having to sacrifice the benefits of injecting with one particular type of plastic.


Low Costs & Sustainable

Lastly, the automated nature of injection moulding creates very low manufacturing and labour costs. Its ability to produce parts at a high output rate helps with cost efficiency and effectiveness, which is especially ideal for producing products where low costs are important to compete within the market.

Injection moulding is also used due to its sustainability element. The process generates low levels of waste, whilst any excess plastic can easily be ground up and recycled. This makes injection moulding a more environmentally friendly process and thus, is a good choice for any company looking to reduce its environmental footprint.

Here at Insignia Manufacturing, we can produce injection moulded products to suit your requirements. If this is something you are interested in, please view our products today and get in contact to discuss your injection moulding needs in greater detail.

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