Vacuum packaging applications include plastic bag vacuum packaging, aluminum foil packaging, glassware, plastics and their composite packaging. Packaging materials can be selected according to the types of articles. Because fruit is fresh food and still breathing, high hypoxia can cause physiological diseases. Therefore, less fruits are packed in vacuum.
There are many kinds of vacuum packaging machines, and the following factors should be considered when selecting them:
1, packing speed. In order to improve the production efficiency, double-chamber or multi-chamber vacuum packaging machine can be selected to improve the progress of the whole production.
2. Whether the packaged goods need to be filled with other protective gases. You can choose a multifunctional vacuum packaging machine with a pump.
3. Vacuum degree requirements of packaged goods. If the packaged goods need to be preserved in a high vacuum, it is necessary to choose a cavity vacuum packaging machine.
4. Requirements of vacuum packaging machine on the composition state of packaged articles.
5. When purchasing, aluminum alloy can be used to package dry and non-corrosive materials such as solids and particles, and stainless steel or aluminum-magnesium alloy can be used to package materials with high salt and acid content.
6. Silicone rubber and black rubber are generally used for sealing rings, and a few low-grade products use foamed rubber. Silicone rubber has high temperature resistance, corrosion resistance, good sealing performance and long service life, while foamed rubber has poor sealing performance, easy falling off and short service life.