Thermal shrinkage film used in the sale and transportation of various products, its main role is to stabilize, cover and protect products.Shrinkage film must have high puncture resistance, good shrinkage and certain shrinkage stress.During shrinkage, the film cannot produce holes.Because shrink film is often suitable for outdoor, so need to add UV anti - UV agents.
Heat-shrinkable film type
PE shrinkable film
PE - PE is a transparent thermoplastic.PE is commonly used in three categories, namely: LDPE, HDPE, LLDPE three kinds of polyethylene monomer is the same, but, in the synthesis of these polyethylene, the process conditions used are not the same, therefore, the generation of three different polyethylene varieties, three kinds of material performance has a big difference.
PE film is a tough material, not easy to use ordinary plastic shredder crushing.As a result of PE film soft and tough, it is not easy to chop, not to mention the high temperature of the high-speed tool, will make LDPE melt adhesion on the blade.PE granulation, can be directly into a strip into the feeding port of the extruder, by the shear force of the screw pull PE film into the barrel heating melting extrusion granulation.PE recycled materials, still can be blown film, used in non-food and drug packaging, but also widely used in Oxford leather and waterproof fabric production, the future is bright.
It is widely used for the whole package of wine, cans, mineral water, all kinds of drinks, cloth and other products.
PVC shrink film
PVC shrink film with added ingredients to enhance its heat resistance, toughness, ductility and so on.The top layer of this surface film is lacquer, the main component in the middle is polyvinyl chloride, the bottom layer is back coating adhesive.It is a popular and widely used synthetic material in the world.Among the materials that can produce 3d surface film, PVC is the most suitable material.
Due to the unique performance of PVC (rain proof, fire resistance, anti-static, easy to form) and the characteristics of PVC low input and high output, it is widely used in the building materials industry and packaging industry, therefore, PVC film has the characteristics of high transparency, good gloss, high shrinkage rate.
POF shrink film
POF is a multilayer co-extrusion environmental protection polyolefin thermal shrinkage packaging material.The film adopts the double-bubble process, LLDPE as the middle layer material, ternary coppolypropylene as the inner and outer layer material, through three layers of co-extrusion composite production.POF with high transparency, high shrinkage rate, and other significant characteristics of heat sealing performance is good, it also possesses the advantages of PP film and PE film and strengths, so its product performance than pure PP film and PE film, is widely used in the international market, and approved by the European and American market environmental protection heat shrinkable film packaging material.