Plastic Injection Molding Machine

Plastic Injection Molding Machine: How it Works

The very first plastic made by man was dated in 1851 and it was made by Alexander Parkes who demonstrated it in London during the 1862 International Exhibition. As time passed by more inventors improved on Parkes’ invention with a more refined form. It was recognized by more countries and continued to become popular around the world. Until a machine known as plastic injection molding machine was developed. Plastic injection mold Process for Plastic parts

The amazing benefit of a plastic injection molding machine is to develop good quality of plastic but in a most convenient way. It provides a quick process of the plastics that increases the manufacturer’s productivity. This innovation in creating various types of plastic materials has two major parts: these are the injection and the clamping unit. Through these two units, the plastic granules are being processed until they are formed into a useful material.

The process of the plastic injection molding machine starts in the injection unit where the plastic granules are being added manually to the hopper. You can also find machines that have a hopper that is fed using a vacuum and automatically get it into the machine. From the hopper the granules are slowly being pushed into the nozzles using a reciprocating screw and as it enter the nozzles it is being heated until the granules are completely melted. When the melted plastic reaches the clamping part of the plastic injection molding machine, the plastic is being cooled down until it has hardened and molded into its shape. Once it has been molded, it will be removed from the plastic injection molding machine and clean its outer surface.

There are different types of plastic injection molding machine available and these are the hydraulic, hybrid, and the electric. Each is designed to make the process more efficient and convenient for the manufacturers.