1. Physical protection Food stored in the bag needs to avoid extrusion, impact, vibration, temperature difference and so on.
2. Enclosure protection The enclosure separates food from oxygen, water vapor, stains, etc. Leakage is also a necessary factor in the package design. Some packages include desiccants or deoxidizers to extend shelf life. Vacuum packaging or evacuating air from the bag is also the primary method of food packaging. Keeping the food clean, fresh and safe during the shelf life is the primary function of the package.
3. Encapsulate or load the same package Small items of the same type are packed into a package and are a good way to save volume. Powders and granular objects need to be packaged.
4. Communicate information Packaging and labeling tell people how packaging or food is used, transported, recycled or disposed of.
5. Marketing Marketing often uses box labels to encourage potential buyers to purchase goods. Packaging design has become a pivotal and ever-changing phenomenon for decades. Marketing communication and flat design are applied to the outer box and the highlights of the sales show (for some reasons).
6. Safety Packaging can play an important role in reducing transportation safety risks. The bag also prevents food from being returned to other items. Food packaging also reduces the likelihood of food being stolen. Some food packages are strong and have anti-counterfeiting labels to protect the interests of the business from loss. The label can be labeled with a laser logo, special color, and short letter authentication. In addition, in order to prevent theft, the retailer has an electronic surveillance label attached to the food packaging bag, and the consumer receives the outlet of the store for degaussing.
7. Convenience Packaging may be readily available for loading, handling, stacking, displaying, selling, opening, reassembling, using and reusing.
8. Partial control Individual packaging helps to control the overall situation. For example, the amount of stock can be known by loading salt into the package. It also makes it easy to calculate recent sales, such as dairy companies delivering and recycling milk bottles, rather than allowing consumers to fill themselves.