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Packaging film is a film material used for packaging items, generally made of polyethylene, polypropylene, polyvinyl chloride and other materials. According to the different uses and characteristics, packaging film can be divided into food packaging film, pharmaceutical packaging film, industrial packaging film and other types. Among them, the food packaging film has good moisture-proof and fresh-keeping performance, which can effectively extend the shelf life of food and keep the food fresh and beautiful.
In the food industry, packaging film bags, roll film and other forms of packaging film is widely used in vegetables and fruits, meat and seafood, frozen food packaging. Drug packaging film is required to have good sealing and waterproof, in order to protect the quality and safety of drugs. The industrial packaging film is usually used for packaging machinery and equipment parts, chemical products, etc., play a role in dustproof, moisture-proof, anti-static and so on.
The process of making packaging film mainly includes extrusion method, casting method, blowing film method, etc., different processes will affect the performance and appearance of the packaging film. In the production process, corporate logo and product information are often printed on the surface of the packaging film to enhance product recognition and market competitiveness.
In general, packaging film plays an important role in the modern packaging industry, not only to protect the product, extend the shelf life, but also to enhance the image and competitiveness of the product in the market.