Heat shrinkable film is very versatile

Due to the corresponding gap between China’s packaging technology and advanced countries in the world, 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 very narrow, limited to beverages, audio-visual products, convenience foods and a small amount In a few areas of daily chemical products, the annual demand is about 20,000 to 30,000 tons. Heat-shrinkable film still occupies a considerable heat-shrinkable packaging market, with great development potential. The main properties of PVC heat-shrinkable film are as follows: Mechanical properties: strong, light, durable, and scratch resistant. Chemical properties: resistance to atmospheric chemical trial production and biological trial production, insulation properties, electrical resistance, heat insulation, noise reduction. Other physical properties: waterproof, greaseproof, airtight, hard or soft, transparent or opaque products can be scattered according to requirements, high-frequency welding or heat sealing, easy to color or print. Processing performance: easy to use all current processing technologies in plastic processing, such as injection, extrusion, forming, calendering, roll forming, coating forming, etc., energy saving, shortening the heating time, reducing the heat transfer to the machine, and cutting off the heat effect. . Next: How to solve the problem of degumming and difficult peeling of protective film after use? Previous: PE heat shrinkable film is widely used in the outer packaging of various products