Food grade packaging requirements and classification

A, food-grade packaging need to meet the requirement of food grade packaging must meet the demand of food protection in terms of 1, food packaging requirements can be cut off steam, gas, oil and organic solvent, etc. ; 2, according to the special requirements of the actual production, increase the function such as rust and corrosion protection and electromagnetic radiation shield; 3, ensure food safety and prolong shelf life from pollution. Food-grade packaging use advocate material and auxiliary material can not contain material damage to human body, or contains quantity under the scope of national standards allow. Due to the particularity of food-grade plastic packaging, only strictly follow the specification of the production, the product is likely to pass, and the market. Within all that come in contact with food packaging bags, packing bags of all strictly abide by the food grade production technology, safety and health not only, more can guarantee the delicious its original flavor. Rather than food grade bags, from the material composition, the main difference lies in the use of additives, if open agent is added in the material, cannot be used in food packaging. Second, how to differentiate between bag is food grade or not food grade? To get the bag when first observation, new materials, no peculiar smell, feel is good, uniform texture, color bright, only these are achieved is good health and safety of food grade environmental protection bag. Three, the classification of food packaging according to the scope of its application can be divided into: ordinary food packaging bags, food bags, plastic food packaging bags, vacuum boiled food packaging bags, cooking food and functional food packaging packaging bags. There are also many kinds of material: plastic bags, aluminum foil bag, compound bag is more common. Air in the vacuum bag is wrapped all take out seal, maintain bag at high stress state, the rare air of low oxygen effect, make no microorganisms living conditions, in order to achieve the purpose of food fresh, disease-free corrosion occurs. Food aluminum foil bag is according to the characteristic with the properties of aluminium with other high separation after dry type composite material made of aluminum foil bag products. Aluminum foil bag has good resistance wet, block, avoid light, high permeability and the function of the beautiful. Food grade compound bag moistureproof, cold resistant, low temperature heat sealing strong tension; Used in instant noodles, snacks, frozen dim sum, powder packing and so on.
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