Protective function: The primary function of packaging is to protect the product from physical, chemical and microbiological contamination or damage during transportation and storage. The shelf life of the product can be effectively extended by using appropriate packaging materials and technologies.
Fresh-keeping technology: Modified atmosphere packaging is a new food preservation technology that replaces the air in the package by filling it with protective mixed gases (such as CO2, N2, O2), inhibits the growth of microorganisms, reduces the breathing rate of food, and thus extends the shelf life of food.
Skin packaging technology: This technology uses vacuum or air pressure difference to make the packaging film fit tightly to the surface of the product to form a tight packaging layer. The key is to choose a packaging film with good flexibility, transparency, strength and tear resistance to ensure the stability and safety of the packaging.

