Food composite packaging bags are widely used in the packaging bag industry. According to the bag type, they can be divided into middle sealing bags, three side sealing bags, vertical bags, zipper bags, four side sealing bags, shaped bags, yin and yang bags, roll films, etc. Composite packaging bag is a kind of bag made of two or more kinds of materials through one or more dry composite packaging films. This kind of packaging bag has the characteristics of a variety of materials, can be combined according to the needs of packaging products, and has good adaptability. There are many packaging materials for composite, such as BOPP, PET, OPP, PVC, AL, PA, PT, etc. The packaging materials of food composite packaging bags are selected according to the requirements of the product. If vacuum food composite packaging bags need to be made, PA/PE can be used. This composite packaging has good vacuum pumping effect and good tensile properties and puncture resistance; BOPP/PE can be used as a composite packaging bag for refrigerated food. This composite material has strong freezing resistance, uniform thickness and fine printing; If the packaging bag is required to be air barrier, oxidation resistant, waterproof, moisture-proof, and with strong mechanical properties, you can choose the aluminum foil bag made of PET/AL/PE or PET/AL/NY/CPP materials. The aluminum foil bag is widely used in the packaging of rice, meat products, dried fish, aquatic products, cured meat, roast duck, roast chicken, roast pig, quick frozen food, ham, bacon products, sausage, cooked meat products, pickles, bean paste, spices, etc. It is precisely because of the diversity of composite materials that composite packaging bags can be more widely used. The manufacturers of composite packaging bags and food packaging bags have set up their own packaging to provide appreciation of exquisite food composite bags.
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