Injection moulded plastic parts seem like they have been around us for a very long time; every bottle of we drink out of and every car we drive is a testament to the durability and flexibility of injection moulding and its low cost of production. In common with a lot of modern day items we take for granted, the need to injection moulded parts was first undertaken during World War II, from around 1940-1945. Prior to this, parts were mostly made of metal which became scarce during the war and another material not required for the war effort was in demand – plastic. The material was used to form many parts that had only previously been manufactured using metal and it quickly became apparent that plastic was actually a superior product, being stronger and lighter than most metals of the time, as well as flexible and user friendly to the manufacturer and consumer.
In conclusion, it appears that Plastic injection moulding has been the saviour of the world and, to be honest, this is not far from the truth! Especially when dealing with large volume applications, there are no other comparable manufacturing techniques that come close to injection moulding and this is why it continues to be as important now as it was in the 1940s. Long live injection moulding!