What are the requirements for packaging in the frozen industry?

　　1. Temperature resistance

　　Low temperature resistance is the basic characteristic of freezing food packaging. Frozen products need to be stored at -18 ° C or lower temperature. Some products need to be frozen under -30 ° C. The performance of packaging in this environment will be reduced, resulting in fragmented packaging materials.

　　At this time, it is necessary to pack not only to be resistant to low temperature, but also adapt to the sudden drop in temperature.

　　Second, thorns and impact resistance

　　Frozen foods are generally relatively hard, especially dumplings, bone -containing meat products, etc. If the packaging resistance of packaging is not enough, foods may pierce the packaging during transportation and storage, causing food to deteriorate. At the same time, frozen foods may be impacted by external forces during transportation, unloading, and placement. Due to vibration, falling or impact, etc., they have harm to transport packaging, and even internal sales packaging.

　　If the packaging bag is poorly resistant, the risk of breaking the bag and cracking of the packaging bag will be exacerbated. The impact of frozen food packaging bags can be measured by impacting the hammer impact.

　　Third, high resistance

　　The storage and transportation of frozen products are under low -temperature environments, but the transportation or consumers will get the room temperature environment when purchasing. Therefore, freezing food packaging bags need high -resistance, preventing products from contact with oxygen, and preventing the evaporation of water vapor, and preventing the relocation of toxic and harmful substances into food.

　　Fourth, safety

　　Safety is the quality that any food packaging bag needs, and the materials that contact with food must reach the food grade. Due to the packaging and transportation process of frozen foods, it is often difficult to ensure that the whole process is in a coherent low temperature environment. Especially in the process of transfer and handling, it is likely to cause the temperature of frozen food to increase significantly within a period of time. It is easy to breed bacteria. The appearance of the packaging or industrial -grade materials is not much different from the packaging made of food -grade materials, but because it contains super -standard plasticizers and other substances, once it is used, it will cause great harm to human health.

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