6 points about pof shrink film you don't know
product description
POF is a heat shrinkable film, mainly used for packaging regular and irregular shaped products, due to its non-toxic environmental protection, high transparency, high shrinkage rate, good heat sealing performance, high gloss, strong toughness, tear resistance, It has the characteristics of uniform heat shrinkage and suitable for automatic high-speed packaging. It is a replacement product of traditional PVC heat shrinkable film. It is widely used in automotive supplies, plastic products, stationery, books, electronics, circuit boards, handicrafts, photo frames and other wood products, toys, daily necessities , Food, cosmetics, canned beverages, dairy products, medicine, cassettes and video tapes and other products.
main feature
1. With high transparency and good gloss, it can clearly display the appearance of the product, improve the sense of perception, and reflect the high grade.
2. The shrinkage rate is large, up to 75%, and the flexibility is good. It can be used to package goods of any shape, and the shrinkage force of the three-layer co-extruded film treated by a special process is controllable, which can meet the requirements of different product packaging on the shrinkage force. Require.
3. Good welding performance and high strength, suitable for manual, semi-automatic and high-speed automatic packaging.
4. Good cold resistance, can maintain flexibility at -50 ℃ without embrittlement, suitable for storage and transportation of packaged objects in cold environment.
5. Environmentally friendly and non-toxic, in line with the US FDA and USDA standards, and can be packaged food.
Main raw materials
The main raw materials of the five-layer co-extruded heat shrinkable packaging film include LLDPE (linear low density polyethylene), TPP (terpolymer polypropylene), PPC (binary copolymer polypropylene) and necessary functional additives such as slip agent, Anti-blocking agent, antistatic agent, etc. These raw materials are all environmentally friendly and non-toxic materials, no toxic gas and odor will be generated during processing and product application, and the hygienic performance of the product conforms to the US FDA and USDA standards, and can be used for packaging food.
production process
The five-layer co-extrusion heat shrinkable packaging film is made of linear low-density polyethylene (LLDPE) and copolymerized polypropylene (TPP, PPC) as the main raw materials, adding necessary additives, and processed by co-extrusion blow molding process. Different from the traditional blow molding process, due to the poor tensile properties of the PP melt state, the traditional blow molding process cannot be used, but the double-film bubble process, also known as the Plandi process internationally, is a process of extruding raw materials through different extrusion processes. It is melted and extruded out of the machine, and through a specially designed co-extrusion die, the initial film is formed and then quenched, and then the product is obtained by heating and secondary inflation and stretching.
Main performance
1.Product Specifications
The five-layer co-extruded heat shrinkable film can be produced in various specifications according to the application. The general thickness ranges from 12μm to 30μm, and the common thicknesses are 12μm, 15μm, 19μm, 25μm, etc. The width specification depends on the volume of the package.
2.cold resistance
The five-layer co-extruded heat-shrinkable packaging film remains soft at -50 °C without brittle cracking, and is suitable for storage and transportation of packaged objects in cold environments.
3.Hygienic performance
The raw materials used in the five-layer co-extrusion heat shrinkable packaging film are all environmentally friendly and non-toxic materials, which are hygienic and non-toxic during processing and use, and can be used for food packaging.
Application prospect
POF heat shrinkable packaging film is widely used, has a broad market, and has the advantages of environmental protection and non-toxicity. Therefore, it has been widely valued by developed countries in the world, and has basically replaced PVC heat shrinkable packaging film as the mainstream product in heat shrinkable packaging materials. PVC heat shrinkable film also occupies a considerable heat shrinkable packaging market, with huge development potential.
