The users of plastic bags are all over the world. It can be said that the use of plastic bags, whether wholesale or retail, is scattered to all kinds of goods. The utilization rate of food packaging is the highest. The quality of food packaging has a direct impact on people's health. Food packaging must meet certain practical requirements in order to be more widely used. So, what practical requirements should food packaging meet?
1. Protect the appearance of food quality and produce certain economic benefits for food in the whole circulation process. After processing, loading, unloading, transportation and storage, food quality is easy to cause damage. Inside and packaging of food can protect food well to avoid damage.
2. To protect the original quality of food and extend the shelf life of food in the whole circulation process, its quality will change and become worse. Food itself has certain nutrition and water, which is the basic condition for the production and reproduction of bacteria, mould, yeast, etc. If the food is sterilized or sterilized at high temperature or refrigerated after packaging, the deterioration of the food can be prevented and the shelf life of the food can be prolonged. At the same time, the food itself has a certain amount of water. When the water content changes, it will lead to the change or deterioration of food flavor. If the corresponding moisture-proof packaging technology can prevent the occurrence of the above phenomenon, it can also effectively extend the shelf life of food. In addition, when food is in circulation, it is exposed to direct sunlight and light, and at high temperature, it is easy to oxidize food. Discoloration, deterioration and other phenomena, such as the use of corresponding vacuum packaging, inflatable packaging technology and corresponding packaging materials. It can also effectively extend the shelf life of packaged food.
Some packages are containers for food circulation. For example, bottled wine, soft drinks, canned food, milk powder, etc. these bottles, cans and bags are not only packaging containers, but also mobile tools for food circulation and sales. It brings great convenience to the circulation of food.
4. Increase the variety of convenient food, convenient for consumers and local flavor. Only after packaging can it be circulated, can it exchange famous and excellent food in different places, and increase people's daily food types. Third, fresh food, such as frozen dumplings, package packages and fresh-keeping technology, can be convenient for people to eat.
5. In order to prevent food pollution and facilitate cooking, special packaging technology is used to make food in circulation. It is necessary to contact containers and people's hands, which is easy to cause food pollution. The packaged food can avoid this phenomenon, which is conducive to the health of consumers.
6. Promote the rationality of food circulation and plan for some fresh food, which is prone to corruption and is not easy to transport far end, such as fruit and aquatic products. The origin of manufacturing various cans can reduce waste, reduce transportation cost and promote the rationality and planning of food circulation.