In today’s age plastic is seen everywhere- be it interiors, packaging industry, medical world or even the world of kitchen utensils. Plastic is a non-metallic substance that can easily be moulded into desired shape. It can be melted and then cooled down into the required structure for commercial use. Even the keyboard that you type on or the mobile that you utilise are made up of plastic. The basic concept of plastic moulding is very simple. Plastic is melted and the molten plastic is poured in the ready moulds of the desired shape and then it is allowed to cool. Blow Moulding In this process the raw plastic is poured in a hollow tube shape with one open end called Parison. The tube, through its open end is then pressed and the metal mould cooled and the pressurised air is forced into the tube. When the plastic cools the metal mould expands and throws out the product. Types of Blow Moulding Injection Blow Moulding The molten plastic is filled into a mould where it is injected through