Basic knowledge of packaging bags

　　Packaging bags in our life, everywhere, with the improvement of living standards, the quality of packaging bags are gradually improving, diversified packaging bags enrich our life, here is to introduce some of the basic knowledge of our inseparable packaging bags, packaging bags classification.

　　According to the different raw materials, the packaging bag can be roughly divided into the following types:

　　1, PE bag: PE is the abbreviation of polyethylene, ethylene is a kind of thermoplastic resin after polymerization. In industry, it also includes copolymers of ethylene and a small amount of α-olefin; The finished product is a transparent plastic bag, can be used in the packaging of clothing, bags, electronic products, etc., style quality is diverse, a wide range of applications, generally according to the production process can be divided into: PE flat pocket, ziplock bag, clip-on bag, envelope bag, punching bag, hand bag, zipper bag, PE film;

　　2, OPP bag: OPP is polypropylene, bidirectional polypropylene, with high transparency, crisp characteristics, easy to use, beautiful and generous, widely used in clothing, food, printing, stationery, cosmetics, paper and other industries. We can also print various patterns and punch butterfly holes and aircraft holes according to customer needs.

　　3. Aluminum foil bag: Aluminum foil bag is made of a variety of plastic film composite after combination through the bag making machine to make bags, can be used for packing food, medicine, as well as a variety of daily necessities, aluminum foil bag also called pure aluminium bag, aluminum foil bag packaging usually refers to lu: su composite vacuum packaging, such products are suitable for the large-scale precision machinery equipment, chemical raw materials, pharmaceutical intermediates, moistureproof, avoid light, vacuum packaging. Four-layer structure is adopted, with good water and oxygen isolation function. Its characteristics can be made into a variety of bags, can be customized with different sizes and different styles of bags, can also be made into flat pockets, three-dimensional bags, organ bags and other styles;

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