Printed food packaging manufacturers tell you that when choosing frozen food packaging bags, you should first study the main components of frozen food, especially the sensitive factors that affect nutrients such as fat, protein and vitamins, including light, oxygen, temperature, microorganisms, physical and mechanical factor. Then, the printed food packaging manufacturer tells you to determine the type of packaging material and the operation mode of packaging technology according to the protection requirements of the content and the transportation environment, so as to achieve the protection function and appropriately extend the shelf life.

1. Health: printed food packaging manufacturers tell you that from a safety perspective, packaging materials (such as plastic bags) that directly contact food must be food grade. The packaging and transportation process of frozen food is usually difficult to ensure that the whole process is carried out in a continuous low temperature environment, especially in the process of transportation and handling, which may cause the temperature of the frozen food to rise significantly within a certain period of time. If the raw materials are unqualified, it is easy to produce bacteria. The printed food packaging manufacturer tells you that the appearance of the packaging made of recycled materials or industrial-grade materials is not much different from the packaging made of food-grade materials, but the plasticizers and other substances contained in it exceed the standard. Use, will cause great harm to human health.
2. Cold resistance: printed food packaging manufacturers tell you that frozen food is usually stored and circulated at a temperature of -18 ℃ or lower, especially some frozen food with trays. During production, food and trays are usually rapidly cooled at -30°C until the core temperature of the product is below -18°C before packaging. Printed food packaging manufacturers tell you that when the temperature drops sharply, the mechanical strength of the packaging material also decreases, resulting in brittle packaging materials.
In addition, printed food packaging manufacturers tell you that frozen food is inevitably subject to shock, shock, stress and other environmental hazards during transfer and transportation. Also, frozen foods like dumplings and dumplings are hard to eat at low temperatures. It is easy to cause cracking and cracking of the packaging bag, which requires the packaging material to have good low temperature performance.