How to choose the shrink film suitable for your product？

There are many types of shrink film materials, such as PVC shrink film, PE shrink film, POF shrink film, etc. So when choosing shrink film, how to choose the shrink film material suitable for your product?PVC shrink film is a product made of PVC and a variety of auxiliary materials. It has the characteristics of good transparency, low shrinkage and high strength. The shrinkage rate can be freely adjusted according to user needs. It has strong operability, low shrinkage temperature and good stiffness. However, the film toughness and cold resistance are not ideal. Its main purpose is to be used as a label film. Since its processing and application process produces harmful gases and does not meet the environmental protection requirements, its application is increasingly affected.

In a sense, PE shrink film is a kind of PE blown film. The difference is that its material formula and die structure are more suitable for the orientation of the film. Normally, its longitudinal shrinkage rate is much greater than the transverse shrinkage rate. It is widely used in one-way shrink packaging of alcohol, cans, mineral water, various beverages, textiles and other products.

POF shrink film has the advantages of high gloss, good toughness, high tear strength, uniform heat shrinkage, and is suitable for automated high-speed packaging. POF is a multi-layer co-extruded polyolefin thermal film. The ordinary middle layer uses LLDPE and the inner and outer layers use polypropylene (PP). It is made by co-extrusion of three or more layers, and then through a special double-bubble method and simultaneous biaxial stretching process. Widely used in automotive products, plastic products, stationery, books, electrical appliances and other industries. It also has extensive application value in children's toys, circuit boards, MP3, VCD, handicrafts, photo frames and other wood products, daily necessities, food, cosmetics, canned beverages, dairy products, medicines, tapes and other product industries.