What is the function of food packaging bags?

Food packaging bags are a type of packaging design that is made to preserve fresh food in daily life. Food packaging bags are thin film containers that come into direct contact with food and protect it when worn.
Food packaging bags need to be produced using food plastic film, usually composite material packaging bags with more than 2 layers.
What is the function of food packaging bags?
1 Physical protection
The food stored in the packaging bag should avoid squeezing, impact, vibration, temperature difference, and other phenomena.
2 Shell protection
The shell can separate food from oxygen, water vapor, stains, etc., and preventing leakage is also a necessary factor in packaging design. Part of the packaging includes desiccants or waste agents to extend the shelf life. Extracting air from vacuum packaging or packaging bags is also the main method of food packaging. The main function of packaging bags is to keep food clean, fresh, and safe during its shelf life.
3 Same packaging
Putting similar small items in one packaging is a good way to save volume. Powder and granular objects need to be encapsulated together.
4. Conveying Information
Packaging and labeling tell people how to use, transport, recycle, or dispose of packaging or food.
5 Marketing
Marketing often uses box labels to encourage potential buyers to purchase goods. Packaging design has become a very important and constantly changing phenomenon for decades. Marketing communication and graphic design are applicable to the highlights of the outer box and (due to certain reasons) sales display.
6 Security
Packaging can play an important role in reducing transportation safety risks. Food packaging bags can also prevent food from being classified as other goods. Food packaging can also reduce the possibility of stealing food. Some food packaging is sturdy and has anti-counterfeiting labels, which play a role in protecting the interests of merchants from loss. Packaging bags can be labeled with laser logos, special colors, and text authentication. In addition, retailers attach electronic surveillance labels to food packaging bags to prevent theft, allowing consumers to obtain store exits and eliminate magnetic interference.
7 Convenience
Packaging can facilitate addition, loading and unloading, stacking, display, sales, opening, repackaging, use, and recycling.