Precautions for food vacuum packaging bag

　　Food vacuum packaging bags use the principle of deoxygenation to effectively prevent food deterioration and maintain its color, aroma, taste and nutritional value. It is widely used in the food industry. How to correctly use food vacuum packaging bags?

　　1. Storage precautions.

　　The gas moisture in the air and the permeability of packaging materials are closely related to the temperature. Generally, the higher the temperature is, the greater the permeability coefficient is, and the more serious the permeability of packaging materials is. Therefore, the food packaged in vacuum packaging bags must be stored at low temperature, and stored at high temperature, which seriously affects the permeability of packaging bags and deteriorates the food.

　　2. Precautions for operation.

　　1) It should be noted that when the food vacuum packaging bag is heat sealed, the sealing part should not be attached with oil, protein, food and other residues to avoid complete heat sealing.

　　2) When the vacuum packaging bag is heated and sterilized, the sterilization temperature and time shall be strictly controlled to avoid excessive temperature, excessive internal pressure of the packaging bag, and sealing separation and rupture of the packaging bag.

　　3) The vacuum packaging bag of food must be fully aspirated, especially the vacuum packaging of fresh meat and unformed food. No residual gas is allowed to prevent the food in the vacuum packaging bag from rotting and deteriorating due to the residual gas.

　　3. Notes on the scope of application.

　　The products with inappropriate vacuum packaging of food are fragile food. If these foods have edges and corners, the packaging bags are easy to crack and penetrate. Therefore, it is recommended not to use vacuum packaging for this kind of food, but to use other packaging, such as inflatable vacuum packaging bags.

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