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Plastic mesh tells the production process of PVC shrink film
Plastic mesh tells the production process of PVC shrink film
PVC shrink film is made by mixing ethylene resin with more than ten kinds of auxiliary materials and then inflating it twice. It is characterized by good transparency, easy shrinkage, high strength, and shrinkage can be adjusted freely according to user needs, and it is highly operable! It is widely used in the packaging of various commodities such as food, electronic appliances, daily necessities, stationery, toys, plastic hardware, glass ceramics, etc., to make its appearance more vivid and beautiful, improve the product packaging grade, and protect the product from dust and Other protection. The ideal film packaging material. The following China Plastics Network - Jiuzhi Plastics Network takes everyone to understand the production process of PVC shrink film, as follows:
PVC resin raw material unpacking, inspection, sieving, formulation-mixing→granulation→extruding thick film→air cooling→hot water bath boiling water heating→setting cylinder lateral inflation→sleeve roller quenching→winding into heat shrinkage membrane. For the amorphous polymer, the PVC can be directly stretched from the molten state to the high elastic state, and then cooled and then taken up into a PVC shrink film, which is heated without quenching. Due to its excellent transparency and easy modification, it is easy to meet the requirements of different strength and packaging performance. It has excellent electrical insulation performance and good flame retardant self-extinguishing property. It is widely used in the production of heat shrinkable film, used for printing standard dry, wire and cable joint shrink sleeve, shrink packaging.