The choice of the material of aluminum foil bag

Aluminum foil bag refers to the category of compound bag containing aluminum foil compound bag, sealing machine according to the characteristic with the properties of aluminium with other high barrier material by dry compound aluminum foil bag is made of the product. Aluminum foil bag is aluminum and other high separation after dry type composite material is made and be become. Aluminum with light luster, reverse capability is strong, good barrier property, air permeability and moisture, strong adaptability to temperature, high temperature or low temperature shape the characteristics of good stability, strong shading sex, moistureproof, so the aluminum foil bag has good resistance wet, block, avoid light, high permeability and the function of the beautiful, water vapor transmittance can reach & lt; 0. 015 g/( m2· 24h) > 。 The choice of material is by the end use, package contents, after processing technology, the use of environmental conditions and other aspects. Also is the aluminum foil bag, such as packing mustard pickles, lining material is PE, because pickle liquid containing a certain amount of storage conditions for the 0 degrees or so, suitable for PE. And if cooking food such as meat, will choose the CPP. And packing of milk powder, the inner with PE. Consider stain resistance, impact and other requirements. Packing meat, but I don't need high temperature cooking, 0 to 4 degrees save CPP quality is bad. The CPP in less than 10 degrees is brittle. But PE has a good low temperature resistance, high temperature above 65 degrees could change soft, Suggestions according to the conditions of use after modification of heat sealing materials. The packing bag of different product packaging, the thickness is different, this is determined by the nature of the packaging product, strict for vacuum products, its used material thickness is bigger. For the greater the thickness of aluminum foil packaging, packaging performance more closely, more can meet the requirements of the packaging, it's just the cost will be higher, packaging material cost is calculated by the quality. Food packaging is not just a simple to use aluminum foil to made, but made of composite materials, the composite material composed of aluminium foil and nylon composite, have a plenty of, made of four layers co-extrusion film in some food packaging, often is multilayer composite materials. Adopt the cause of the multilayer composite material for packing food, maintain the quality of the food, another is can be printed on the packing bag of food rich in colour and design, it also makes a way of food recognised by the market, is also a necessary way of food advertising.
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