After the product is packaged, it is required to protect the product, prevent qualitative change, and ensure the quality. After printing, it must play the role of beautifying the product, explaining the product and promoting the product. Commodities go through the links of packaging, transportation, and sales in the entire circulation process, and the packaging materials are required to have corresponding characteristics in each link.

1. Protection performance. First of all, the packaging material must have a certain mechanical strength. Different commodities have different requirements for packaging materials. For example: food packaging materials must fully comply with food packaging hygiene standards. That is, the packaging materials do not migrate to toxic substances, and are non-toxic, odorless and odorless. In addition, it is necessary to clarify the nature of the contents. For moisture-proof packaging, vacuum packaging and inflatable packaging, it must have the function of blocking the penetration of water vapor and oxygen in the environment into the packaging bag and preventing the escape of the inert gas in the bag. The packaging of quick-frozen vegetables and frozen foods must be resistant to low temperature freezing. For microwave sterilized food packaging and packaging materials for making "retort bags", it is required to have the function of high temperature cooking without shrinking and deformation. For oil-containing food packaging, the functions of air tightness, oil resistance and UV penetration resistance are required. For skin packaging and shrink packaging, the plastic film is required to have a certain shrinkage tension. For packaging such as tea, tablets, biscuits, etc., high moisture resistance, air tightness and light shading are required to maintain their original flavor. For packaging such as fresh vegetables and fruits, if packaging materials with moisture-proof and gas-blocking properties are also used, it will bring side effects, because vegetables and fruits need an appropriate amount of oxygen supply to keep them fresh.
2. Operational performance. For plastic packaging printing materials, the first thing to do is to have printability, or to solve the problem of printing fastness after pretreatment. It is also required to have a certain rigidity and stiffness, which can adapt to automatic packaging by packaging machinery, adapt to heat-sealing mechanical sealing, bag making, and be easy to fill with items, easy to open and other properties.
3. Transfer and storage performance. The packaging must have a certain compressive strength, and it is not easy to be damaged when subjected to general pressure in the circulation field. The shape of the packaging should be easy to stack and occupy less space.
4. Promotional performance. The color of packaging should be novel, and the color of decoration and printing should be bright and generous, which is in line with the hobbies of the sales area and has market competitiveness. In addition, it is also required to be free of static electricity to avoid dust pollution.
If interested in this aspect of the product, please contact Jinhua Huana Plastic Co., Ltd.