The technical content of vacuum sealing machines for special-shaped cans in the world is increasing day by day; although the technical content of some existing vacuum machinery products in my country is not high, many foreign vacuum sealing packaging machine manufacturers have applied advanced technology to the production of equipment. The vacuum sealing packaging machine not only needs to meet the needs of the rapid development of the food and pharmaceutical industries, but also actively participate in international competition. In terms of technological development, it is developing in several directions such as functional diversification, standardization of structural design, intelligent control, and high precision of structure. 

​​
As the name suggests, the vacuum sealing packaging machine is a device that discharges air and then packs it. It is suitable for vacuum packaging of various plastic film bags, composite film bags, and aluminum foil bags. Vacuum packaging of various solids, powders and semi-fluids such as meat products, poultry products, pickled vegetables, seafood, garlic products, wild vegetables, grains, medicines, biological products, electronic components, etc. Shelf life, the purpose of improving product quality.
​​
my country's vacuum sealing packaging technology was developed in the early 1980s, and by the 1990s, the number of vacuum sealing packaging machine manufacturers had grown to more than 3,000. According to the working method, vacuum sealing packaging machines can be divided into two-chamber, rolling , stretch film type and automatic bag feeding type four categories, vacuum sealing packaging machine manufacturers have concluded that these four categories of products have the following characteristics according to the working principle of the equipment:
​​
1. Part of the air (oxygen) in the packaging container is excluded, which can prevent the oxidative deterioration of food.
2. The use of packaging materials with excellent barrier (air tightness) and strict sealing technology and requirements can effectively prevent the exchange of the contents of the packaging, which can avoid food weight loss, loss of taste, and prevent secondary pollution.
Because of the above characteristics of vacuum sealing packaging machine equipment, it is very common in the food industry.