At present, with the great advantages of vacuum packaging bags and ordinary packaging bags in terms of shelf life and sealing of products, they have gradually become the production process that has attracted much attention in the packaging range. In the field of food packaging, the emergence of vacuum packaging bags is also increasingly widespread. However, there are still huge problems in vacuum packaging bags in the vacuum stage, which limits the pace of vacuum packaging bags. Packaging manufacturers widely believe that the current vacuum packaging machines generally have problems of low efficiency and poor vacuum quality. The market of vacuum packaging machines is also expanding with the progress of vacuum packaging bags. Active in the field of low-end products. Customers generally believe that the market prospect of vacuum packaging machine is good. However, as far as domestic vacuum packaging equipment is concerned, there are still many problems in related technologies and functions. After the product is vacuumed, air leaks cause the product to have problems such as bag swelling, abnormal packaging, and non-compliance with relevant safety standards. Vacuum packaging bags, tea packaging bags