What Are The Requirements Of Vacuum Packing Machine For Packaging Materials

1. In order to maintain or maintain the atmosphere in the packaging container, Vacuum Packing Machine puts forward different requirements for packaging materials. The air permeability and moisture permeability of plastic packaging materials change with the influence of polymer molecular structure, film thickness, temperature and humidity, etc.; after vacuum or inflatable packaging, it is affected by the atmospheric environment, and the oxygen content in the packaging container or the components of the mixed gas The concentration will change. The principle of choosing packaging materials is to reduce the impact of the atmospheric environment and obtain the longest possible shelf life.

2. According to the characteristics of food preservation, materials used for vacuum and air-filled packaging can be divided into two categories: one is high-barrier packaging materials, which are used for vacuum and air-filled packaging for food preservation to reduce the content of packaging containers. The oxygen content and the changes in the concentration of each component of the mixed gas; the other is gas-permeable packaging materials, which are used to maintain a low breathing rate when packaging fresh fruits and vegetables in aeration Vacuum Packing Machine. Vacuum and air-filled packaging have the same requirements for the moisture permeability of packaging materials. The better the barrier to water vapor, the better the preservation of food.

3. Food packaging materials need to have high barrier properties. Fatty food requires high oxygen and oil resistance; dry food requires high moisture resistance, to ensure smooth sailing for packaged food. Fragrant food requires high aroma retention; fresh fruit and vegetable food requires packaging with high oxygen, carbon dioxide and water vapor permeability.