What are the processes of plastic absorption, injection molding, blow molding and extrusion? What's the difference between them? What is the industry prospect? What are the more famous manufacturers?

Suction: Vacuum forming, usually called suction, is a plastic processing technology. The main principle is that the flat plastic hard sheet is softened by heating, then adsorbed on the surface of the mold by vacuum, and then formed after cooling. It is mainly divided into two categories: thick sheet plastic absorption and thin sheet plastic absorption. Widely used in auto parts, lighting, advertising, decoration, large mechanical shell, display, aerospace, household appliances, bathroom and other industries. Injection molding: that is, thermoplastic injection molding, this method is to melt plastic materials and inject them into the film cavity. Once the molten plastic enters the mold, it is cooled and shaped into a certain shape according to the mold cavity. Blow molding: also known as hollow blow molding, is a rapidly developing plastic processing method. A tubular plastic parison obtained by extrusion or injection molding of thermoplastic resin is placed in a combined mold when it is hot (or heated to a softened state), and compressed air is introduced into the parison immediately after the mold is closed, so that the plastic parison expands and adheres to the inner wall of the mold, and various hollow products are obtained after cooling and demoulding. Extrusion: Extrusion molding is also called extrusion in plastic processing and extrusion in rubber processing. It refers to a processing method that materials are heated and plasticized under the action of the barrel and screw of an extruder, pushed forward by the screw, and continuously passed through the die to make products or semi-finished products with various sections. The development prospect of the industry is still relatively good. For example, Shenzhen Rong Zhen Plastic Co., Ltd. is a manufacturer with better production technology in plastic absorption. Injection molding is the most used, and the products are relatively small. Compared with injection molding, plastic products are relatively large, with the maximum shape of 3000*2000*8000mm and the thickness of 12mm. I hope I can help you.