There are two kinds of high pressure tube and kettle type. From the current development situation, in order to reduce the reaction temperature and pressure, the tubular process generally uses low temperature and high activity primer to initiate the polymerization system, with high purity ethylene as the main raw material, propylene / propane as the density adjusting agent, using high activity The polymerization is carried out at a temperature of from about 200 ° C to about 330 ° C and from 150 to 300 MPa. The polymerized polymerized polymer in the reactor must be subjected to high pressure, medium pressure and low pressure cooling, and the high pressure circulating gas is cooled and separated and sent to the ultrahigh pressure (300MPa compressor inlet, the medium pressure circulating gas is cooled and separated (30MPa compressor inlet, and low-pressure cycle gas after cooling, after separation into the low pressure (0.5MPa compressor recycling, and molten polyethylene after high pressure, low pressure separation into the granulator, the water pelletizing, Granulation, the enterprise can be based on different application areas, by adding the appropriate additives, particles packaged by the factory .--- OPP plastic bags
OPP plastic bags in use: you can use injection molding, extrusion, blow molding and other processing methods. Mainly used for plastic sheeting, industrial packaging film, pharmaceutical and food packaging film, mechanical parts, daily necessities, building materials, wires, cable insulation, coating and synthetic paper.
