What Are The Advantages of Injection Moulding?

What Are The Advantages of Injection Moulding?

Protomould Plastics specialises in low to medium volume injection moulding, focusing on annual volumes from 500 to 150,000.

We have a range of machine sizes that are supported by a comprehensive tool room, whilst also machining and maintaining all of our tooling on site.

This helps to keep us in control, whilst maintaining maximum efficiency so that our customers are supported along each step of the process.

What is injection moulding?

Injection moulding is a manufacturing process that allows parts to be produced in large volumes. It involves injecting molten materials into a mould and is typically used as a mass production process to manufacture identical items in bulk.

10 Advantages of Injection Moulding


Production is fast and efficient. Injection moulding is a great manufacturing process for producing products in bulk. Speed depends on the complexity and the size of the mould but can take anywhere from 15 to 150 seconds per cycle time.


Low labour costs. This manufacturing process is an automated process, eliminating the need for manual labour and replacing it with machines and robotics, which is often controlled and managed by a sole operator. In turn, this reduces labour costs and general overheads are significantly reduced.


Design flexibility. Since the product is being produced within a mould, there is a lot of design flexibility when injection moulding, meaning more complexity can be added to the design. It also offers greater quality and more accurate levels of detail and that can be imprinted onto the product.


High-output production. Injection moulding is excellent for manufacturing identical products in bulk. This is because thousands of parts can be produced before tooling needs to be maintained, making it highly efficient.


Wide selection of material. There is a large selection of polymer resins to choose from and multiple plastic materials can be used simultaneously, such as over moulding TPE onto PP parts.


Minimal Wastage. Injection moulding produces very little post-production scrap in comparison to traditional manufacturing processes. Plus, unused or waste plastic can be reground and recycled for future use. Typically any waste comes from the sprue and runners.


Greater colour control. Plastic parts can be manufactured in any required colours with the use of masterbatches or compounding.


Consistent manufacturing process. Injection moulding is a relatable process and therefore the next product should be identical to the first. This is important when producing high-quality products and parts with high tolerances and greater part reliability in large volumes.


Reduced finishing requirements. There is often very little post-production work required as parts usually have a good finished look upon ejection.


Enhanced Strength. When plastic injection moulding, it is possible to use fillers in the moulding material. These fillers reduce the density of the plastic whilst it is being moulded and can help add greater strength to the completed part.

If you are interested and wish to benefit from our services, give us a call on 01964 544 544 or drop us an email at sales@protomouldplastics.co.uk