The basic requirement for frozen food packaging is to maintain the original quality characteristics of the food during production, delivery and sale, and to facilitate transportation and to avoid bacterial contamination. This requires us to focus on the factors that affect the main ingredients in frozen foods, especially the protein, fat, vitamins and other nutrients in the selection of packaging materials. According to the protection requirements of the food and the transportation environment, choose the type of frozen packaging materials to achieve the purpose of maintenance errors and proper extension of storage period.
From a food safety point of view, it is necessary to follow several principles when selecting frozen food packaging materials:
Cold resistance
Frozen foods are typically stored at -18 ° C or lower, especially for partially frozen foods with trays. In the case of a sudden drop in temperature, the mechanical strength of the frozen food packaging material will also decrease, resulting in fragile packaging materials. Moreover, frozen foods are inevitably subjected to a variety of environmental damage during transportation. This requires the low temperature function of the frozen packaging material to stand out.
2. Hygiene
In terms of safety, it is necessary to reach the food level in packaging materials that are in direct contact with food. Because of the packaging and shipping of frozen foods, it is often difficult to ensure that the food is in a continuous low temperature environment. If the frozen packaging material is not closed, it will easily breed bacteria and cause harm to the human body.
3. Impact resistance
Frozen foods are easily damaged by external forces during transportation, shelf placement, loading and unloading. If the impact resistance of frozen packaging materials is poor, it will easily appear to break the bag and open the bag, which will not only affect the appearance of the packaged food. It will also contaminate the food inside.
With the increasingly fierce market competition, the differences between similar products are gradually narrowing, and the homogeneity of brand use value is gradually increasing. What kind of products can attract consumers and stimulate them to buy is a problem that merchants need to consider. These problems have enabled companies to work hard on the packaging materials of products, especially on frozen packaging materials. They hope to improve the optimization of packaging materials to highlight product differentiation and attract consumers' attention.
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