The big boxes are transported to a cartoning bag making machine and stacked, and when they reach a predetermined quantity, they are loaded into the opened box. After packing, the box lid is glued and sealed by a box sealing and sticking paper bag machine, and the box is glued with tape or the paper bag machine is used to bind the box firmly. Liquid filling paper bag machine and its assembly line are divided into normal pressure filling paper bag machine, pressure filling paper bag machine and vacuum filling paper bag machine according to the filling principle.
        ① Atmospheric pressure filling paper bag machine: It is filled by liquid's own weight under atmospheric pressure. This type of filling paper bag machine is divided into two types of regular filling and fixed volume filling, which is only suitable for filling low-viscosity liquids such as milk and wine.
        ② Pressure filling paper bag machine: It is filled under the atmospheric pressure, which can be divided into two types: one is that the pressure in the liquid storage tank is equal to the pressure in the bottle, and the liquid is poured into the bottle to fill it by its own weight. It is called equal pressure filling; the other is that the pressure in the liquid storage tank is higher than the pressure in the bottle, and the liquid flows into the bottle by the pressure difference. High-speed production lines mostly use this method. Pressure filling paper bag machine is suitable for filling liquid containing gas, such as beer, soda, champagne, etc.
        ③Vacuum filling paper bag machine: Filling is performed when the pressure in the bottle is lower than the atmospheric pressure. This filling paper bag machine is simple in structure, high in efficiency, and suitable for a wide range of viscosity of materials, such as oil, syrup, fruit wine, etc. Is a block diagram of the liquid filling process. Boxes filled with empty bottles are stacked on pallets and sent to the unloading paper bag machine by the conveyor belt. The trays are unloaded one by one. The boxes are sent to the unloading paper bag machine with the conveyor belt. The empty bottles are taken out of the box. The conveyor belt is sent to the carton-washing paper bag machine, cleaned, and then conveyed to the carton-loading paper bag machine, so that the bottles containing beverages can be filled therein.
        The empty bottles taken out of the unloading paper bag machine are sent to another bottle washing paper bag machine for disinfection and cleaning by another conveyor belt. After being inspected by the bottle inspection paper bag machine, they will enter the filling paper bag machine and cap paper bag machine after meeting the cleaning standards. Beverages are filled into bottles by filling paper bag machines. The filled bottles are sealed by a capping paper bag machine and conveyed to a labeling paper bag machine for labeling. After the labels are labeled, they are sent to the carton paper bag machine into a box and then sent to a stack of paper bags. warehouse.

        The process of bottle filling line for various beverages is basically similar. However, due to the different nature of the beverage, the filling paper bag machine and the capping paper bag machine are also different. For example, in addition to the selection of suitable filling and capping paper bag machines for beer filling lines, a sterilization paper bag machine is also added. The paper bag sealing machine is selected according to the shape of the cover (crown cap, screw cap, plug cap, etc.).