Production process of POF heat shrinkable film

POF heat shrinkable film production process release time: 2017-12-13 　　POF heat shrinkable film production process: 　　 three-layer co-extruded heat shrinkable packaging film is made of linear low density polyethylene (LLDPE) and copolymer polypropylene (TPP, PPC) is the main raw material, added with necessary additives and processed by co-extrusion blow molding process. The process is different from the traditional blow molding process. Due to the poor tensile properties of PP melt state, traditional blow molding cannot be used It adopts the double bubble process, also known as the Pulandi process in the world. It melts and extrudes the raw materials through different extruders, through a specially designed co-extrusion die, forms the primary film and then quenches it, and then heats it. The product is obtained by secondary inflation and stretching. It has the advantages of environmental protection and non-toxicity, so it has received extensive attention from developed countries in the world, and has basically replaced PVC heat shrink packaging film as the mainstream product in heat shrink packaging materials. The production of this series of products in my country began in the mid-1990s. At present, there are more than ten production lines in China, all of which are imported equipment, with a total production capacity of about 20,000 tons. Due to a certain gap between my country’s packaging technology and internationally developed countries, the application of three-layer co-extrusion series of heat-shrinkable packaging films in China is still in the preliminary stage, and the scope of application is still relatively narrow, limited to beverages, audio-visual products, convenience foods and a small amount of daily chemical products In a few areas, the annual demand is about 2 to 50,000 to 30,000 tons. PVC heat shrinkable film also occupies a considerable heat shrinkable packaging market, with huge development potential. Dongguang County Hengxing Plastic Co., Ltd. currently mainly uses PVC heat shrinkable film, POF heat shrinkable film, and PE heat shrinkable film as its leading products. Introducing advanced equipment, using well-known brand raw materials, absorbing technical advantages of domestic and foreign counterparts, continuous innovation and exploration, product quality is reliable. With complete production line equipment for PVC heat-shrinkable printing film, the products are excellently supplied to several well-known domestic companies and have been well received by customers. PVC shrink film from 70MM-800MM can be processed according to customer requirements. Previous: The market price trend of POF shrink bags