(1) atmospheric pressure method
Normal pressure method, also known as pure gravity method, that is, under normal pressure, the liquid material to rely on self-weight flow into the packaging container. Most of the free flow of gas-free liquid can be filled with this method, such as liquor, wine, milk, soy sauce, vinegar and so on.
(2) isobaric method
Equal pressure method, also known as pressure gravity filling method, that is, higher than atmospheric pressure conditions, the first charge of the packaging container, so that the formation of the tank with the same pressure, and then rely on the infusion of pouring material into the weight Inside the packaging container. This method is generally used for gas-containing beverages such as beer, soft drinks, sparkling wine and other filling. Filling with this method can reduce the loss of CO2 contained in these products and prevent excessive foaming during filling and affect product quality and quantitative accuracy.