1. Plastic packaging and its harm
Food vacuum bag has many advantages, such as light weight, convenient transportation, chemical stability, easy production and so on. It is widely used in food packaging. By adding a certain amount of antioxidant, preservative and other auxiliary polymer materials into the plastic, it has a good protective effect on food. However, the surface of plastic packaging is easy to lead to food pollution due to friction and electrification adsorption of micro dust impurities. The non polymerized ethylene, ethylbenzene and other free monomers in plastic packaging will increase the risk of migration to food with the extension of contact time, thus causing food pollution. Plastic packaging products added non random agent and plasticizer have carcinogenicity and teratogenicity. Large use of plastic packaging increases the pressure of later recycling and pollutes the environment.
2. Paper packaging and its harm
In recent years, paper packaging is widely used in food packaging because it can be made into bags, boxes or cans, boxes and other forms. However, because most of the raw materials for paper packaging come from the recycling of paper or paperboard, bacteria, chemical residues and some impurities are often attached to the produced paper packaging, which increases the risk of food contamination by paper packaging. In addition, whitening agents and fluorescent chemicals used in most paper packaging are potential sources of food pollution.
3. Glass container and its harm
With people's diversified and personalized demand for food vacuum bags, many glass containers made of silica are widely used in food packaging. In order to increase the gloss of glass containers, manufacturers often add arsenic, antimony and other clarifiers, and even lead. In addition, glass containers of various colors are also used for food packaging containers. Food is easily contaminated by silica and other substances dissolved in glass.