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The Advantages and Disadvantages of Injection Moulding

Injection Moulding is a commonly used manufacturing process whereby identical parts are produced in high volumes by injection material into a closed mould. Through using a variety of materials, a design will be produced to facilitate the moulding process.


To help firstly understand the process, granules of plastic material are placed into the machine via conveying systems. The melted plastic material is then injected under pressure through runner systems into the cavity. You will then be able to define the shape of the mould through using our specialist equipment and tools. Once cooled and ejected from the mould you’d then have a finished part. This process is then repeats allowing each cycle to produce an identical part.


The Advantages of Injection Moulding


  • The injection moulding process provides fast production at a high-output.
  • Due to the process being mainly machine orientated, cost for labour are lower than other manufacturing processes.
  • Design is known to be very flexible as multiple materials can be used at the same time and you can use a range of coloured materials.
  • As the parts produced are identical good consistency is a guarantee.
  • Due to the flexibility of plastic injection moulding our machines can produce even the smallest of parts whilst leaving as little post-production scrap possible.


The Disadvantages of Injection Moulding


  • One of the few disadvantages for injection moulding is that there may be a high initial tooling and machinery cost.
  • If you want to produce parts at a low volume then small runs of parts can be less cost effective.
  • It’s important to note that there are a few design restrictions for plastic injection moulding, however by working alongside our experienced design team you should be able to overcome initial issues.


Our knowledgeable team will be more than happy to help, advise and quote for your Injection moulding requirements.

If you are looking for more information please get in touch today!

Added: 09 Oct 2018 16:10

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The Advantages and Disadvantages of Injection Moulding

Injection moulding is one of the most widely used manufacturing processes in the world today. Here at CJ Tools & Mouldings, we are going to look at the advantages and disadvantages of this process. If you look around you there are probably hundreds of injection moulded parts everywhere you look.


The Benefits of Injection Moulding


Fast production


Injection moulding can produce a huge amount of parts per hour, depending on how many impressions are in tool, but you’re looking at something between 15-30 seconds for each cycle time.


Material and Colour Flexibility


When you have, your tool made, you can change the material and colour of the part that you’re producing.


Labour Costs Low


A self-grating, automatic tool runs on an injection moulding machine without very much difficulty at all. Your parts can be readied with little or no labour on top of the production.


Design Flexibility


Injection moulded parts have an almost limitless amount of flexibility, you just need to be able to design around certain restrictions outlines below.


Low Waste


The majority of plastics recycle – the plastic waste is usually grinded up and reused.


The Disadvantages of Injection Moulding


High initial tooling cost


There’s a high cost to entry to get a tool made in this process and industry.


Part design restrictions


The process of injection moulding means there are some restriction with regards to part design. You might need to make a few changes to your parts so we’re able to produce them for you or you may have to decide on a different manufacturing technique.


Accurate costing is hard to do

With Injection moulding, there are always unpredictable changes you should make sure that you budget for.


To start your journey with CJ Tools and Moulding, click here to contact us!

Added: 04 Jul 2017 13:33

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