1.Primary material

Food packaging bags are polyethylene, in order to facilitate the preservation of freshness and storage of food in life, resulting in product packaging bags. Food packaging bags are film containers that come into direct contact with food and are used to hold and protect food. Food packaging bags should be produced using food-grade plastic film, generally more than two layers of composite packaging bags.

2.Scope of application

Food packaging bags can be divided into: ordinary food packaging bags, vacuum food packaging bags, inflatable food packaging bags, boiled food packaging bags, cooking food packaging bags and functional food packaging bags according to the scope of their applications. Food stored in the bag needs to avoid squeezing, impact, vibration, temperature difference and other phenomena.