Tag Archive: moulding

A Brief Overview Of Plastic Injection Moulding

The idea about plastic injection moulding is not entirely fresh and new. It has existed since 1870s and it has made the plastic industry earn billions of dollars each year. The introduction of plastic injection moulding has made the industry best in what it does.

What is the principle behind plastic injection moulding? There are two materials that are involved in the injection moulding process namely ? thermoplastics and thermosetting plastics. Examples of thermosetting plastics are Epoxy and Phenolic while nylon and polyethylene are examples of thermoplastics. The plastics are liquefied and placed into the heated barrel where they are mixed and form a mold cavity, which is cooled down and hardened.

The machine used in the process consists of reciprocate screws that are required to mix the granules. There is also the presence of a moveable pattern and this is responsible for molding the plastic into the shape desired. All of this takes place in the clamping part. Injection moulding is applied in many components for many vehicles.

The production of plastic injection moulding can be done through cheap tooling. Production can be made from bottle caps, containers, home appliances and plastic combs among many others. If you want to produce products in large volume, the only way that you can do this is through injection moulding. This is also considered as the most common method in manufacturing. It does not entail pricey labor costs and the materials you need are relatively inexpensive. You can also minimize your scrap losses and there will be the development of high tolerance during the manufacturing.

Injection moulders make use of different materials in order to produce huge amount of products. In the early 1990s there are about 18000 materials used in the process and it increases in increment of 750 each year. Product designers are allowed to choose the materials.

It is great to take advantage of the cheap tooling feature of this manufacturing technique. The only things required would be the proper selection of materials based on the strength as well as overall function expected on the final part. Different parameters for production should also be taken into account.