Paper bags are more and more widely used. Shopping in supermarkets, shopping malls, shoe stores, clothing stores, etc., generally have paper bags, so that customers can carry the purchased items. For food packaging materials, its primary function is to provide convenience and practicality. In this regard, the strength of the paper bag gives it an absolute advantage and only a strong enough outer packaging can keep the food from falling off. Of course, in terms of packaging liquid food, the paper bag can remain unchanged in a humid environment, so it can prevent the outflow of liquid food and play a better packaging role.
