The automatic composite packaging film what types commonly used?

Automatic composite packaging film used in food, electronics, chemical industry, medicine, tea, precision instrument and the national defence highly sophisticated products vacuum packaging or general packaging. The following is a common automatic packaging composite membrane. An automatic composite packaging film, PET/PE, OPET/LDPE composite packaging film material is polyethylene terephthalate with high pressure polyethylene, habits of PET/PE composite bags, it has high transparency, resistance characteristics with good sex of oxygen, so especially suitable for food like bread and cake inflatable packaging. And because the heat resistance and cold resistance of the composite film is very good also, also can be used as the packing bag of quick-frozen food and cooking food. Two automatic composite packaging film, BOPP/CPP, BOPP/CPP composite film material is two-way stretching polypropylene with stretching polypropylene, used to call the OPP/CPP composite bags, in all of the composite film, the composite film is relatively high transparency. Compared with single membrane bags, same thickness, the cost is higher than single membrane bags, but feel is better than the single film bag; Due to wet the membrane resistance performance is good, again with in terms of food, it is mainly used for packaging some dry food and fast food, such as biscuits, instant noodles, etc. Defect is high temperature resistant and cold resistant performance is poor, unfavorable cooling and high temperature sterilization packaging food. Three, automatic OPP/PE composite packaging film: BOPP/LDPE composite film by two-way stretch polypropylene with high pressure polyethylene composite film bag, usually abbreviated to OPP/PE composite membrane, that the air resistance and resistance properties of the compound bag is very good, so is especially suitable for packing of the products, like green tea its oil resistance effect is good also, so marked with some oil products also used this kind of compound bag packaging.