The production process and production principle of the self-sealing bag film blowing machine: Put the dry polyethylene particles into the lower hopper, and enter the screw from the hopper by the weight of the particles. When the pellets contact the thread bevel, the rotating bevel faces the plastic It generates a thrust perpendicular to the beveled surface, pushing the plastic particles forward.
During the course of the passage, due to the friction between the plastic and the screw, the plastic and the barrel, and the collision and friction between the particles, it also gradually melts due to the external heating of the barrel. The molten plastic is filtered out by the machine head to remove impurities and come out from the die head die mouth, cooled by the wind ring, inflated through the herringbone board, the traction roller, and the reeled film is wound into a tube. Uses and characteristics The equipment adopts double frequency conversion speed regulation, which can save energy for you. The extruder, barrel and screw of this unit are made of high quality alloy steel, tight nitriding treatment and precision processing, with the best hardness and corrosion resistance The screw with special design has high output and good plasticization. It is suitable for blowing low density polyethylene (HDPE) linear low density polyethylene (LLDPE) and other plastic films, and is widely used in civil and industrial packaging such as food, clothing, garbage bags, vest bags, etc.
Low-pressure polyethylene (HDPE) and linear low-density polyethylene (JJDPE) are new varieties of polyethylene that have been mass produced on the international market in recent years. Due to its excellent impact strength, puncture resistance, resistance to environmental stress cracking, and low temperature resistance, it can be used to make micro films (1.5 film thickness film strength is enough to withstand 3 wire thickness high-pressure polyethylene film) . The use cost is low, so it is widely used for blown film. It can blow low-pressure, high-pressure, linear low-density three kinds of polyethylene films, which are not only suitable for their new film blowing, but also suitable for their recycled plastic film blowing, stable performance, reliable quality, this film blowing machine uses a special structure Rod extruder, advanced spiral die head, flexible cooling air ring adjustment, reasonable aperture-type foam stabilization structure, so as to ensure that the three types of polyethylene and different proportions of mixed plastics are uniform.
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