POF is a new shrink wrap material better than PVC film

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, toughness, tear resistance, Uniform heat shrinkage and suitable for automatic high-speed heat shrink packaging machines, etc., is a replacement product of traditional PVC heat shrinkable film, widely used in plastic products, stationery, books, handicrafts, photo frames and other wooden products, toys, insecticides, daily necessities, food, cosmetics, canned beverages, medicine and other products.

Main feature:

1. High transparency and good gloss, which can clearly display the appearance of the product, improve sensory awareness, and reflect high-grade.
2. The shrinkage rate is large, up to 75%, and the flexibility is good. It can pack any shape of goods, and the shrinkage force of the POF treated by special technology is controllable, which meets the needs of different commodity packaging for shrinkage force.
3. Good sealing performance and high strength, suitable for manual, semi-automatic and high-speed automatic packaging.
4. It has good cold resistance and can maintain flexibility at -50°C without brittle cracks. It is suitable for storage and transportation of packaged objects in cold environments.
5. Environmentally friendly and non-toxic, in line with US FDA and USDA standards, and can be packaged for food.

Raw material:
The raw materials of POF heat shrinkable packaging film include LLDPE (linear low density polyethylene), TPP (terpolymerized polypropylene), PPC (binary copolymerized polypropylene) and necessary functional additives such as slip agent and anti-blocking agent , antistatic agent, etc. These raw materials are all environmentally friendly and non-toxic materials, no toxic gas and peculiar smell will be produced during the processing and product application process, and the hygienic performance of the product meets the standards of the US FDA and USDA, and can be used for packaging food.

Production process:
POF 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 through a five-layer co-extrusion blow molding process. Different from the traditional blow molding process. Due to the poor tensile properties of the PP melt state, so the traditional blow molding process cannot be used. Instead, the double-bubble process is used, which is also known as the Pulandi process internationally. It is produced by machine melt extrusion, through a specially designed co-extrusion die head, forming a primary film, quenching, and then heating and stretching for a second time.

Main performance:

1. Product specification: POF heat shrinkable film can be produced in various specifications according to the application. The general thickness range is 12 μm to 30 μm, and the commonly used thicknesses are 12 μm, 15 μm, 19 μm, 25 μm, etc. The width specification depends on the volume of the package.
2. Cold resistance: POF heat-shrinkable packaging film remains soft at -50°C without brittle cracks, and is suitable for storage and transportation of packaged objects in cold environments.
3. Hygienic performance: The raw materials used in POF heat shrinkable packaging film are all environmentally friendly and non-toxic materials. The process of processing and use is hygienic and non-toxic. It meets the national FDA and USDA standards and can be used for food packaging.

Application prospects:
POF heat-shrinkable packaging film has a wide range of uses, 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. At present, PVC heat-shrinkable film still occupies a considerable heat-shrinkable packaging market, but with the gradual improvement of consumers’ packaging requirements and the rapid development of POF heat-shrinkable packaging film production technology, it can be predicted that the market for POF heat-shrinkable film is very broad.