Professional wholesale supply, welcome to consult at low prices. Baoruitai (Cangzhou) Packaging Co., Ltd. specializes in selling standard silage film, straw film, straw rope and straw bag. The manufacturer has guaranteed the true materials and reliable quality through strict production process. Welcome to buy. It is sanitary and safe, and meets the requirements of food packaging. Pet is often referred to as polyester. High transparency, good gloss. It has excellent oil resistance and aroma resistance. It is hard and high-strength. Good chemical stability, good acid and alkali resistance of olefins. 150 ℃ can be used for a period of time. Health and safety. It is widely used in poultry packaging. Composite film based on pet can be used for food packaging. Polyamide PA, commonly known as nylon, has strong air resistance, but its water vapor barrier is poor, and its water absorption is strong. With the increase of water absorption, the air and moisture resistance of polyamide PA decrease sharply, and the stability of its strength and package size is also affected. Good chemical stability, non-toxic packaging material. Therefore, it is often used for thermal sealing layer and moisture-proof coating of composite materials. Polypropylene is a kind of transparent, shiny, physical and mechanical properties, tensile strength, hardness and toughness, and heat resistance of light plastic. It can be used continuously at 120 ℃ and boiled in boiling water. It has stable chemical properties and is stable to acid, alkali, salt and various solvents within a certain temperature range. Cost saving. The use of wrapped film packaging products can effectively reduce the use cost. The original packaging using wrapped film only accounts for about 15% of the original packaging box, and the heat shrinkable film accounts for about 35% of the original packaging box, accounting for about 50% of the carton packaging. At the same time, it can reduce the labor intensity of workers, improve packaging efficiency and packaging grade. At present, the widely used plastic packaging materials in the market are polyethylene and polyethylene, which are opaque, have certain permeability, tensile strength and tear strength, and also have certain flexibility and good moisture resistance. At the same time, the adjustable tension can make the hard products close to each other, and make the soft products compact. Especially in the tobacco industry and textile industry, it has a unique packaging effect. Dry food needs high moisture resistance. Aromatic food needs high odor resistance. Fresh fruits and vegetables also need a certain amount of oxygen, carbon dioxide and water vapor permeability. At the same time, it should also have good physical and mechanical properties, including tensile strength, tear strength, impact strength, etc. It should also have good chemical stability and should not have any chemical reaction with internal food to ensure food safety. It also has high temperature resistance and is suitable for high temperature disinfection and low temperature storage of food. Therefore, most food packaging in the market is based on composite plastic film packaging, especially high barrier materials have become the main body of food packaging. Therefore, the quality and flavor of the content should be considered first. At the same time, in the selection of plastic film bags, we must fully understand the relevant properties of plastics to achieve a reasonable selection. In particular, plastic film bags for food packaging must comply with the hygienic standards for plastic products of corresponding materials. It has good mechanical properties