Filling method of filling machine

Filling method of filling machine:

1) Normal pressure method

The atmospheric pressure method is also called the pure gravity method, that is, under normal pressure, the liquid material flows into the packaging container by its own weight. Most free-flowing, non-liquid-liquid materials can be filled by this method, such as white wine, fruit wine, milk, soy sauce, vinegar, etc.

(2) Isobaric method

The isostatic method is also called pressure gravity filling method, that is, under the condition of above atmospheric pressure, the packaging container is first inflated to form an air pressure equal to that in the liquid storage tank, and then depends on the self-weight of the liquid to be poured. Inside the packaging container. This method is commonly used for the filling of carbonated beverages such as beer, soda, sparkling wine, and the like. Filling with this method can reduce the loss of CO2 contained in such products, and can prevent excessive foaming during the filling process and affect product quality and quantitative accuracy.

(3) Vacuum method

The vacuum method is filled at sub-atmospheric pressure and can be carried out in two ways:

(a) Differential pressure vacuum

That is, the liquid storage tank is at normal pressure, and only the packaging container is evacuated to form a vacuum, and the liquid material is flowed to complete the filling by the pressure difference between the liquid storage tank and the container to be filled. This method is commonly used in China.

(b) gravity vacuum

That is, the liquid in the liquid storage tank is in a vacuum, and the packaging container firstly draws air to form a vacuum equal to that in the liquid storage tank, and then the liquid material flows into the packaging container by its own weight. Due to the complicated structure, it is less used in China. The vacuum filling method is widely used, and it is suitable for filling liquid materials with a slightly higher viscosity, such as oils and syrups. It is also suitable for filling liquid materials containing vitamins, such as vegetable juice, fruit juice, etc. Forming a vacuum in the bottle means reducing the contact between the liquid material and the air, prolonging the shelf life of the product, and the vacuum method is also suitable for filling the poison. Materials, such as pesticides, to reduce the spillage of toxic gases and improve working conditions.

(4) Pressure method

The mechanical material is pressed into the packaging container by mechanical pressure or air pressure. This method is mainly used for filling thick materials with high viscosity, such as filling tomato sauce, meat emulsion, toothpaste, balsam and the like. Sometimes it can also be used for the filling of soft drinks such as soft drinks. At this time, the pressure of the steam water itself is directly poured into the bottle which is not inflated and equal pressure, thereby increasing the filling speed, and the formed foam is easy to disappear due to the lack of colloid in the steam water. It has a certain influence on the quality of filling.