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From the different materials can be divided into liquid filling machine, paste filling machine, powder filling machine, particle filling machine. In terms of the degree of automation of production, divided into semi-automatic filling machine and automatic filling equipment. Filling machinery can be divided into three forms from filling methods:

1. Atmospheric pressure method

Atmospheric pressure method is also known as pure gravity method, that is, under atmospheric pressure; liquid material depends on the dead weight flow into the packaging container. Most free flowing liquid materials without gas can be filled in this way, such as liquor, fruit wine, milk, soy sauce, vinegar, etc.

2. Waiting for voltage law

Such pressure method is also called pressure gravity filling method, that is, under the condition of high pressure, the first packing container filled with gas; so that the formation of the same pressure and liquid tank and then rely on the weight of the filling material flow into the packing container. This method is applicable to the filling of alcoholic beverages, such as beer. This method can reduce the loss of CO2 contained in the products; and prevent excessive bubbles from affecting the quality and quantitative accuracy of the products in the filling process.

3. Vacuum method

The vacuum method is performed under conditions below atmospheric pressure and can be performed in two ways: differential pressure vacuum and gravity vacuum.