Custom Plastic Injection Moulding for Customer Specified Products


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The need for custom made plastic materials can be addressed by utilising custom plastic injection moulding. Plastic manufacturers can aid the customer in this aspect from designing and creating the mould up to mass producing the plastic products.

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Custom Plastic Injection Moulding for Customer Specified Products

  1. 1. Custom Plastic Injection Moulding for Customer Specified ProductsThere are times when projects would call for specific and unique shapes and sizes of plasticproducts. In these types of projects, customers can count on customised injection moulding toproduce the exact specifications and requirements needed for their material. This type ofinjection moulding requires customisation from the design phase up to the production process.Customised plastic products can be made by forming plastic materials into specified shapes andsizes using a mould. The injection moulding process involves the use of thermosetting orthermoplastic raw materials and feeding them into the mould. The plastic material cools andhardens, taking the shape of the mould cavity. Customised plastic products are usually designedfirst by engineers. After which, specific metal moulds are built by the plastic manufacturer usingprecision machines to make the mould cavity forming the shape of the finished product.Generally, custom injection moulding is needed for purposes where the desired material is ofspecific size and shape, especially if the geometric shape is a bit complex.Ideally, this process is used for producing huge volumes of plastic products made out of themould. This is because there is expectedly high investments involved in designing and buildingthe customised mould equipment. Injection moulding, however, it is advantageous for its abilityto produce significantly bigger volumes of plastic products and for the low labour capitalrequired. Injection moulding also reduces the need for a finishing process after the mouldedplastic products are made.The injection plastic moulding process involves feeding raw thermoplastic or thermosetmaterial into a barrel to heat it. A screw type plunger or an injection ram is then used to insertthe melted plastic material into the mould where it rests to cool and solidify into the form ofthe custom made mould.The mould is typically built by a toolmaker using hardened or pre-hardened steel or aluminium.The choice would depend on the cost consideration and the number of plastic products thatshould be made. Aluminium would cost less than steel, but if one is looking to produce highervolumes of plastic parts, then steel moulds would definitely offset the capital outlay. This isbecause steel moulds are more wear resistant, so they can produce more plastic products in alonger time span. Despite the high initial equipment expenses, the cost per piece goes down asmore pieces are produced.Although the injection moulding process is basically the same, plastic manufacturers usedifferent techniques to produce the desired plastic material. Technological advances inproducing moulds for the process have opened more possibilities for more complex designs.
  2. 2. For instance, when more complex mould designs are needed, plastic producers use computernumerical control tools for precision machining.Customised injection moulding is a good way of coming up with novel plastic product designs.Although the process requires fairly higher initial investment, overall costs and the quality ofthe output are sure to make up for the initial costs.