Packaging process

27 Jul 2021

Packaging process
The packaging process includes the main processes such as filling, wrapping, and sealing, as well as related pre- and post-processes such as cleaning, stacking and disassembly.

Mechanical packaging
In addition, packaging also includes processes such as metering or stamping on the package. The use of mechanical packaging products can increase productivity, reduce labor intensity, adapt to the needs of large-scale production, and meet the requirements of cleanliness and hygiene.

There are many classification methods for packaging machinery.
According to functions, it can be divided into single-function packaging machines and multi-function packaging machines; according to the purpose of use, it can be divided into inner packaging machines and outer packaging machines; according to packaging types, it can be divided into special packaging machines and general packaging machines; according to the level of automation, it can be divided into semi-automatic machines And fully automatic machines, etc. form-fill-seal packaging machine is a multifunctional packaging machine. After the material enters the top of the packaging machine, the metering part sends the determined quantity of products into the material channel in turn. When the roll packaging material passes through the outer wall of the material channel, it is wound into a tube shape by the former, and the longitudinal seam seals the longitudinal seam firmly. The horizontal sealer completes the top seal of the packaging bag and the bottom seal of the next bag, forming two welds. Since the unloading channel is wrapped by the packaging bag, the bottom seal can be directly unloaded into the bag after the bottom seal is welded, and then a station is moved to complete the top seal and cut with a cutter to complete the packaging process. Roll packaging materials are single-layer and composite. Single layer such as moisture-proof cellophane, polyethylene, polypropylene, high-density polyethylene, composite such as stretched polypropylene/polyethylene, polyethylene/cellophane/aluminum foil. In addition, there are heat-sealable materials. Packing sealing types include pillow sealing, three-side sealing and four-side sealing. The cartoning machine is used for the packaging of product sales. cartoning machine is a machine used for product sales and packaging. It puts a measured amount of material into the box, and closes or seals the opening of the box. The cartoning machine is used to complete the transportation and packaging. It packs the packaged products into the box in a certain arrangement and quantity, and closes or seals the opening of the box. Both the cartoning machine and the cartoning machine have the functions of container forming (or opening the container), metering, loading, and sealing. The typical process is: the filling machine positions the hose container, after measuring and filling, the end of the container is sealed, and then sent to the cartoning machine. The cartoning machine first forms the blank box, wraps the hose with liner paper, and pushes it into the box to close the mouth of the box. The small boxes are sent to the large box machine for stacking via the conveying device. After stacking a predetermined number, the big box blanks are wrapped to form a container, and at the same time, the small boxes are put into it, and glued and sealed. The big boxes are transported to the boxing machine for stacking, and when the predetermined number is reached, they are loaded into the opened boxes. After packing, the box cover will be glued and sealed by the sealing and sticking machine, and tape should be attached to the seam of the cover tongue or the box will be bound firmly by using a strapping machine. liquid filling machine can be divided into normal pressure filling machine, pressure filling machine and vacuum filling machine according to the filling principle. Atmospheric filling machine is filled by liquid weight under atmospheric pressure. This type of filling machine is divided into two types: timing filling and constant volume filling, which are only suitable for filling low-viscosity and gas-free liquids such as milk and wine. The pressure filling machine is used for filling at higher than atmospheric pressure. It can also 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 flows into the bottle by its own weight. Isobaric filling; the other is that the pressure in the liquid storage cylinder is higher than the pressure in the bottle, and the liquid flows into the bottle by the pressure difference. This method is often used in high-speed production lines. The pressure filling machine is suitable for filling liquids containing gas, such as beer, soda, champagne, etc. Vacuum filling machine is to fill the bottle when the pressure in the bottle is lower than the atmospheric pressure. This type of filling machine has a simple structure, high efficiency, and a wide range of adaptability to the viscosity of materials, such as oils, syrups, and fruit wines. The general process is: boxes with empty bottles are stacked on pallets, sent to the pallet unloading machine by the conveyor belt, the pallets are unloaded one by one, and the boxes are sent to the unloading machine with the conveyor belt, and the empty bottles are taken out from the box. The empty boxes are sent to the box washing machine through the conveyor belt, cleaned, and then transported to the boxing machine to load the bottles with beverages into them. The empty bottles taken out from the unloading machine are sent to the bottle washing machine for disinfection and cleaning by another conveyor belt. After being inspected by the bottle inspection machine, they enter the filling machine and capping machine after meeting the cleaning standards. The beverage is filled into the bottle by the filling machine. The beverage bottles are capped and sealed by the capping machine and transported to the labeling machine for labeling. After labeling, they are sent to the cartoning machine to be put into the box and then sent to the stacker and pallet machine to be stacked on the pallet and sent to the warehouse. The process of the bottle filling line for filling various beverages is basically similar. However, due to the different nature of the beverage, the filling machine and capping machine used are also different. For example, in addition to selecting a suitable filling and capping machine, the beer filling line also adds a sterilization machine. The capping machine selects the corresponding model according to the different cap shape (crown cap, screw cap, plug cap, etc.) used.