Plastic food bags are widely used for food packaging and storage, characterized by good sealing and durability. Different materials are adapted to different food packaging needs to ensure the freshness and safety of food. The following are the common materials and uses of plastic food bags:

Material:
Polyethylene (PE):

Low Density Polyethylene (LDPE): LDPE is one of the most common food bag materials with a soft texture, good durability and flexibility. It is non-toxic, odorless and suitable for direct food contact.
Uses: It is used to make food bags for daily use, such as vegetable bags, fruit bags and frozen food bags in supermarkets.
High Density Polyethylene (HDPE): HDPE is harder than LDPE, but still maintains good flexibility and water resistance. It has good tensile resistance and is suitable for food packaging that requires weight bearing.
Uses: Mostly used for shopping bags in malls, take-out bags and other more robust food bags that can carry heavier food.