Nowadays, there are many food packaging bags, and food packaging bags are widely used. So what functions should the packaging bag meet in use?

Physical maintenance of the food stored in the packaging bag needs to prevent squeezing, impact, vibration, temperature difference and other phenomena. Shell maintenance The shell can separate food from oxygen, water vapor, stains, etc., and leakage prevention is also a necessary element of packaging design. Some packages include desiccants or deoxidizers to extend the shelf life.
Vacuum packaging or removing the air from the packaging bag is also the main food packaging method. Keeping food clean, novel and safe during the shelf life is the primary function of the packaging bag. Packing or stuffing small objects of the same variety in the same package into one package is a good way to save volume. Powder and granular objects need to be encapsulated.
Convey information. Packaging and labels inform people how the packaging or food is used, transported, recycled, or disposed of. Marketing marketing often uses box labels to encourage potential buyers to purchase goods. Packaging design has become an insignificant and changing phenomenon for decades. The marketing communication warfare design is applied to the outer box and (for some reasons) the highlights of the sales show.
Safe packaging can play an important role in reducing transportation safety risks. Packaging bags can also prevent food from being returned to other commodities. Food packaging can also reduce the possibility of food being stolen. Some food packages are strong and have anti-counterfeiting labels, which are used to protect the interests of businesses from loss.