The process of plastic[plastic?:Plastic sample cutting machine] manufacturing starts from the point when petroleum is drilled and then shipped to the refinery, where crude oil or petroleum and natural gas are refined to produce a large number of petrochemical products. When propane and ethane are extracted from the crude petroleum, they are placed in high temperature furnaces. In other words, both the substances are subjected to cracking, in order to break down these materials into smaller unsaturated hydrocarbons. Cracking of ethane and propane yields ethylene and propylene.
Ethylene and propylene are placed in a reactor and combined with a catalyst. This process results in the formation of 'fluff', which is the name for powdered polymer. Finally, the 'fluff' is combined with additives in a continuous blender. There are various types of additives, which can be added to the 'fluff' in order to create the desired quality for the final product, i.e. plastic. After combining with the additives, the polymer is fed to an extruder in order to melt it, after which it is cooled and then introduced to a pelletizer. A pelletizer is designed to compress and mold a material into the shape of a pellet. The plastic pellets obtained thus are then used to manufacture various plastic products with the help of the processes like extrusion, injection molding and blow molding.
