The main molding plastic sheet machine method ( Below)

The last part introduces the forming method of plastic sheet machine, the methods for the current sheet molding, thermoforming, etc all have very good reference, continue to introduce other forming method here. Say again hollow molding hollow blow molding. It is a manufacturer of products and the hollow tube cylindrical thin film method. The first extruder extrusion or injection machine or on a tube tubular electrodes in the melt, and then put the billet in blow molding mold, into the blank one compressed air blowing, uniform hollow billet expansion until close to the mould wall, cooling stereotypes after open mold hollow out products. In industrial production, such as bottles, barrels, ball, pot, box type of thermoplastic plastic products made available this method, and this method is also prompted system is the main reason for the cup machine to produce. If the continuous extrusion of molten plastic tubing from the extruder barrel hot compressed air is piped in, in the pipe barrel swell stay thin, and then cooling to finalize the design, can get tube cylindrical thin film, the truncation can be heat sealing bag, also can be the longitudinal cutting of plastic film. Also called pressure molding compression molding compression molding. The method by the upper and lower die ( Or convex and concave die) Mould of installed in the press between upper and lower template, plastic pellet ( Or powder, or preformed billet) Under the action of heat and compression mold cavity filled with closed, after curing finalize the design for plastic products. This method is mainly used for hot plastic firmware and lid machine. Injection molding injection molding is also called the transfer. The plastic pellet or blank feeding chamber into the mold, the heat and pressure under the action of the plastic melt through the mold material at the bottom of the chamber of gating system, Runner and gate) Mold cavity filled with closure, and curing. The method is suitable for complex shape or with more insert heat firmware plastic products. Solid phase forming solid forming is also called secondary molding. Its characteristic is makes the plastic below the melting temperature of molding, plastic no obvious flow state in the process of forming. More than the law for plastic plate of secondary processing, such as molding vacuum forming, compressed air and pressure molding, etc. Solid phase forming to be used for thin wall products molding processing, can already used in the manufacture of thick wall products. Plastic molding method in addition to the above list of six, and rolling molding, casting molding, plastic molding, foam molding, etc.