Application of small bag vacuum packaging food code spraying In the food industry, in order to maintain moisture and freshness, many products will use vacuum packaging for food preservation. Vacuum packaging ensures the circulation of fresh products to a certain extent, such as quick-frozen products, fresh food in some seasonal festivals, and so on. The emergence of vacuum packaging makes food easier. In particular, the industrial production of vacuum food has been formed, and the enterprise cost is lower, which is inseparable from the application of inkjet printers.