Food packaging bags need to meet the requirements of internal and external conditions of the big four! ！ ！

Food packaging is generally direct contact with food, especially in the food packaging bags, so for food packaging inner conditions, safe environmental protection is also very important. In addition also need to satisfy the following conditions: first, respiratory requirements: requirements for fresh fruit and vegetable food packaging bags have good respiratory function, in order to achieve the purpose of keeping fresh. Secondly, barrier property requirements: this is food packaging is one of the important elements. We chose food packaging is to better protect the food from the external environment pollution, barrier property requirement is decided by the food itself characteristic, its characteristics are external, internal block or selective blocking and so on. Block material are air, water, oil, light, microorganism and so on. Thirdly, strength requirements: the surface stacking in food, transportation, resistance to the outside world in the process of handling all kinds of damage, such as pressure, impact and vibration, don't jerry-built projects. Fourth, brand, promotion sex requirement: now most of packaging for food with its own brand LOGO, printed with the above company name, address, product composition, nutrition composition, characteristics, such as text, and printing such is in order to attract the attention of consumers, better to have the advertising effect.
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