How much do you know about the material of composite packaging bags?
There are many materials for composite packaging bags, generally 2 to 4 kinds of materials are compounded, let's talk about the first layer of printing film: BOPP (bright film) BOPP (matt or matte) PET (white film) Nylon (white film) ) Anyone who has made bags knows that the thickness of these materials is also written on the contract. BOPP is the most widely used, and most bags in supermarkets are printed with BOPP. Vacuum material printing film PET and nylon, tea packaging uses PET more, because the price is much cheaper than nylon, nylon is used in boiled or retorted bags, generally fish, meat and other cooked foods pass 90 degrees to Nylon is used for high-temperature sterilization at 120 degrees. Of course, the ink is also high-temperature resistant ink.
