Classification and use of heat shrinkable film

Classification and use of heat shrinkable film Heat shrinkable film is used for the sales and transportation of various products. Its main function is to stabilize, cover and protect the product. The shrink film must have high puncture resistance, good shrinkage and a certain shrinkage stress. During the shrinking process, the film cannot produce holes. Since shrink film is often used outdoors, it is necessary to add UV anti-ultraviolet agent. Types of heat shrinkable film 1. PET shrinkable film PET heat shrinkable film is a new type of heat shrinkable packaging material. Because it is easy to recycle, non-toxic, odorless, good mechanical properties, especially in line with environmental protection, etc., in developed countries, polyester (PET) has become an ideal substitute for polyvinyl chloride (PVC) heat shrinkable film. 2. OPS shrink film OPS (heat shrink film) is a new type of skin packaging material that meets environmental protection requirements. OPS shrink film has high strength, high rigidity, stable shape, and good gloss and transparency. Convenient processing, easy coloring, good printing performance, and extremely high printing resolution. For trademarks that are constantly pursuing fine printing, it is completely an improvement in materials. 3. POF shrink film POF has the characteristics of high surface gloss, good toughness, high tear resistance, uniform heat shrinkage and suitable for automatic high-speed packaging. It is a replacement product of traditional PVC heat shrinkable film. POF means heat shrinkable film. POF stands for multi-layer co-extruded polyolefin heat shrinkable film. It uses linear low-density polyethylene as the middle layer (LLDPE) and co-polypropylene (pp) as the inner and outer layers. It is plasticized and extruded out of the machine, and then processed by special processes such as die forming and film bubble inflation. 4. PE shrink film PE polyethylene, it is a transparent thermoplastic. There are three types of PE commonly used, namely: LDPE HDPE LLDPE The monomers of the three kinds of polyethylene are the same, but when synthesizing these polyethylenes, the process conditions used are different, so three different polyethylenes are produced. Varieties, the properties of the three materials are quite different. Heat shrinkable film use Heat shrinkable film is commonly used in the outer packaging of various products such as food, medicine, sterilized tableware, stationery, craft gifts, printed matter, hardware and plastic products, telephones, electronic appliances, etc., especially in irregular shapes As for the combined (clustered) packaging of articles or commodities, it can not only meet the functions of moisture-proof, dust-proof, touch-proof, transparent display, etc., but also increase the attractiveness of the product appearance. It can also be used to replace all kinds of cartons, which not only saves money Packaging cost, and in line with packaging trends. Shrink film (bag) can be processed into: flat bags, arc-shaped bags, trapezoidal bags, three-dimensional bags and other special-shaped bags. The scope of application of heat shrinkable film The heat shrinkable uses far-infrared radiation to directly heat various specifications of film. The product is transported to the shrinking furnace through a conveyor belt, and the product is loaded with a shrink wrap film. After sealing, it enters the shrink packaging machine, and the product automatically shrinks. Heat shrink packaging The power consumption of the machine is small, and the average power consumption per hour is only 2.1KW. It achieves a perfect shrink packaging effect without affecting the packaging. The electronic stepless variable speed, solid-state voltage regulator controls the temperature, which is stable and reliable. It is used in food, beverage, Candies, stationery, hardware tools, daily necessities, chemical products, etc. heat shrink. Previous: What are heat shrinkable films in daily life Next: Characteristics of pet heat shrinkable films