How to identify the safety of food packaging bags

Food packaging bags, as the name suggests, are packaging products that are used to directly contact food. The safety of food packaging bags will directly affect the safety of food. When purchasing food with packaging in our daily life, we can use“look, smell, ask, see”method to identify the safety of food bag products. 1,“see”—First of all, pay attention to the name of the product to identify its use and scope of use, and do not use it indiscriminately to avoid accidents; secondly, check whether the QS logo is printed on the label of the food packaging bag. The QS logo is the national standard for plastic products that directly contact food. In addition, it is necessary to carefully observe whether the food bag has poor light transmission or quality problems such as spots, aerosols, and bubbles; 2.“smell”—If the food packaging bag has a strong plastic smell, it means that the food bag packaging bag is not suitable for packaging food. Generally, the food bag of qualified quality should not have any peculiar smell; 3.“ask”—For the packaging bags whose main function is to package food, special attention should be paid to the sales staff to understand their materials, uses, etc.; 4.“cut”—Carefully touch the food bag with your hands. For key parts such as burrs and damage at the opening, it means that the food bag is not used, so as not to cause accidents; secondly, check whether the QS logo is printed on the label of the food packaging bag. The QS logo is for direct National standard certification of plastic products in contact with food, in addition, it is necessary to carefully observe whether the food bags have poor light transmission or quality problems such as spots, aerosols, and bubbles. The chemical composition and physical and chemical properties of different foods are different, so different foods have different protective requirements for food packaging bags. For example, the cake is rich in oil and soft, and has a certain optimal water content, so it should at least meet the following requirements: oil-proof and high-oxygen resistance (to prevent oil leakage and grease from being oxidized), high moisture resistance ( to prevent the cake from losing moisture and becoming dry and hard).
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