The food industry is the largest market for shrink packaging. Shrink films are widely used in a variety of fast food, lactic acid foods, beverages, snacks, beer, wines, agricultural products, dried food, souvenirs and other packaging. For a variety of PET bottled beer, beverage labels, tags can be removed to reduce the process to facilitate recycling; for bottled beer tie belay alternative packaging, to prevent the explosion of bottled beer wounding.

    Shrink film is a stretch in the production process is directed, and in the process of using the heat shrinkage of the thermoplastic plastic film. Heat shrinkable film of early 1936 was applied, the first major film to shrink rubber packing perishable foods. Now, shrink technology has been developed to almost shrink plastic to package a variety of merchandise. In addition, shrink-wrapping has also been used to produce shrink labels and shrink caps, so that is not easy to print or complex shape containers can be labeled. Recently, there have been updated applications are developed.

  Production technology and characteristics of the production of shrink film extrusion blow molding or extrusion usually cast method to produce thick, and then softening temperature above the melting temperature below the temperature of a high-elastic state under the longitudinal and transverse stretching, or just a direction in which the tensile direction, while the other direction, do not stretch, the former called the biaxial stretch shrink film, shrink film which is called one-way. When used in the drawing temperature is greater than or close to stretching temperature on the contractile force and reliable products to be packaged bandage to live.

    Heat shrinkable film material mainly used for a variety of thermoplastic films. PVC shrink film based initially, with the growing market demand, PVC heat shrinkable film is gradually reduced, while a variety of PE, PP, PET, PVDC, POF shrink film such as the rapid development of multi-layer co-extruded into the mainstream market. Currently, only domestic manufacturers shrink film plastics packaging Committee of China Packaging Federation, nearly 20, the output close to 80 thousand tons. Experts predict that within the next five years, the domestic film market will shrink more than 20% growth rate.

    Shrink film packaging advantages: 1) appearance, close to commodities, so also called skin packaging, suitable for packaging a variety of different shapes; 2) protection is good, if the shrink wrapped packaging inside the packaging with hang on Transport packaging combined with better good protection; 3) cleaning is good, especially for precision instruments, sophisticated electronic components packaging; 4) economic good; 5) anti-theft, good variety of food can shrink film with a big package together, to avoid loss; 6), good stability, goods will not collapse in the packaging film; 7) transparency is good, customers can see the product contents.

    In recent years, shrink packaging films have developed rapidly, with the ever-changing market demands, heat shrinkable film positive multi-level, functional direction, a number of new technologies and new products. Multi-layer co-extruded composite heat shrinkable linear low density polyethylene film used as intermediate layer co-extrusion grade of polypropylene as the outside layer is made by coextrusion which has the advantages of PE, PP, PE or PP is superior to single layer film, is widely used internationally heat shrinkable packaging material. Single-layer heat shrinkable film is widely available in the fast-food pasta, multi-layer heat shrinkable film in fresh meat, fatty food packaging is also widely used. Therefore, heat shrink packaging film development trends in the food industry is getting better.

I am an expert from Frbiz Site, usually analyzes all kind of industries situation, such as folding camping picnic table , plastic lawn chairs.