Tumbler airtight operation is a feature. Is vacuum sealed in the vacuum packaging machine, the packaging container by the vacuum pump for the extraction of air, after reaching a certain degree of vacuum immediately seal the packaging Tumbler vacuum container is formed in a vacuum state. Comparison and exhaust heat, compared with the exhaust sealing method can reduce the heating time of the content, better color, flavor and preservation of food, therefore, the sealing method is widely applied to compare pumping, especially for exhaust heat conduction slow the products are more suitable.