OPP bag is a stretch of polypropylene, is a form of plastic, in fact, a plastic bag, its features are: easy to burn, the flame: The melting dripping down on the yellow and blue, less smoke from the fire continues to burn. OPP bag: with high transparency, more brittle and other features, by the OPP after chip sealing and fold the sides of the tongue in the opening sticky adhesive seal products are loaded using tear seal to protect the surface of the skin on the back after the tongue folded cement be easy to use, elegant, widely used in clothing, food, printing, stationery, cosmetics, paper and other industries. Also based on customer need to print a variety of patterns and playing butterfly hole Aircraft hole. OPP film has distinct advantages: First, a good seal. Experimental data show that the new sealing OPP film is its traditional film more than doubled, making it the product of moisture, fresh stronger, longer lasting; two, strong security. The new membrane synthesis techniques used and the special printing technology with high technology content, only Germany and Japan, the two master the technology, the production of counterfeit almost impossible for the commodity to provide a strong security guarantee; three, the new OPP film the raw material used for biodegradable materials, so in full compliance with international environmental protection standards. The new OPP film tobacco Blair has, on a number of large international companies have started to use. Food issue has been broad interest in the problem of removing the food itself, the packaging has become another important issue. As food bags material is not the same, so he has the particularity itself is different. As personal food composition, its quality, the printing ink is also very important. Some exquisite designs printed bags, with a lot of ink, benzene substances containing it more if it exceeded the residual amount of words, for human consumption after it, it may cause chronic poisoning. Many companies blindly pursue excessive beautifully packaged, often ignored issue of food security.