What should I pay attention to when inspecting food plastic packaging bags?

There are many kinds of food plastic packaging bags, and there are many materials used to make food plastic packaging bags. Therefore, in order to ensure the safety of food, it is necessary to be strict in acceptance. What are the requirements for food plastic packaging bags during inspection? 1. The single-film food plastic packaging bag must be checked and accepted: the appearance should not have any defects such as air bubbles, perforations, water marks, violent tendons, poor plasticization, and fish-eye stiffness that are hindering use. Specifications, width, length, thickness deviation should be within the specified range. Physical and mechanical properties include tensile strength and elongation at break, which reflect the ability of the product to stretch during use. If this item is unqualified, the food packaging bag is prone to rupture and damage during use. 2. The food plastic packaging bag with composite film should be checked and accepted: the appearance should be smooth, without scratches, burns, air bubbles, broken oil and wrinkles, and the heat sealing should be smooth and free of false sealing. The film shall not have cracks, pores and composite layer separation. No impurities, foreign objects and oil stains and other pollution. In addition, the soaking liquid in the bag shall not have peculiar smell, odor, turbidity and discoloration. The requirements of plastic packaging bags for packaging food are very strict. They must be non-toxic and harmless, comply with the provisions of national laws and regulations, and comply with the corresponding mandatory standards, but the packaging must have clear signs: trademarks, license labels, Place of origin, factory address, company name, production date, main ingredients of the product, etc.
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