PE is commonly used in three categories, namely: LDPE HDPE LLDPE The three polyethylene monomers are the same, except that the process conditions used to synthesize these polyethylenes are different, so three different polyethylenes are produced. Variety, the performance of the three materials have a big difference.
The PE film is a very tough material that is not easily pulverized by a conventional plastic pulverizer. Because the PE film is soft and tough, it is not easy to shred, not to mention the high temperature of the tool at high speed, which will cause the LDPE to melt and adhere to the blade. The granulation of PE can be directly placed into the feeding port of the extruder, and the PE film is dragged into the barrel by the shearing force of the screw to heat, melt and extrude the granule. The first grade material recycled by PE is still blown film, used for non-food and pharmaceutical packaging, and is also widely used in the production of oxford leather and tarpaulin, with a bright future.
PE heat shrinkable film is widely used in the whole collection packaging of wine, cans, mineral water, various beverages, cloth and other products. The product has good flexibility, strong impact resistance, tear resistance, not easy to be damaged, not afraid. The tide and shrinkage rate are large.
The possibility that the PE heat shrinkable film and the protected product are not firmly adhered to is the viscosity of the sensitive adhesive used in the production of the protective film product, or the molding machine used by the user when performing the mold. The pressure is not enough, so it is necessary to replace the sensitive glue, increase the pressure of the film, and pay attention to the effective cleaning of the surface of the profile, so that this problem can be avoided. There is also the fact that the wings are raised at both ends after a period of use, mainly due to the large degree of stretching. Do not make sharp contact, because sharp marks can easily scratch these shrink films, which will affect our use and cause loss of quality. Therefore, avoid contact with these objects during use, storage environmental problems, Do not expose to the sun, which will reduce its service life and accelerate the aging phenomenon, so it should be placed in a cool place, but the ventilation conditions are good, which is very good for extending its service life. Compressive fixation enables the product to form a compact, space-saving unit that prevents misalignment during transport and has a very good effect on protecting the product. Cost-saving, not only saves costs, but also reduces the labor intensity of workers, and the packaging efficiency is also improved.