A brief introduction to the packaging process

The packaging process includes main procedures such as filling, wrapping, and sealing, as well as related pre- and post-processes such as cleaning, stacking, and disassembly. Additionally, packaging also involves processes like metering or imprinting on the packaging items. Using mechanical packaging products can increase productivity, reduce labor intensity, meet the needs of large-scale production, and comply with hygiene requirements.
There are various classification methods for packaging machinery. According to function, it can be divided into single-function packaging machines and multi-function packaging machines; according to the purpose of use, it can be classified as inner packaging machines and outer packaging machines; according to the types of packaging, it can be divided into special-purpose packaging machines and general-purpose packaging machines; according to the level of automation, it can be classified as semi-automatic machines and fully automatic machines, etc.
The forming - filling - sealing packaging machine is a multi-functional packaging machine. After the materials enter the top of the packaging machine, the metering part will determine the quantity of products and send them into the material channel one by one. As the roll packaging material passes around the outer wall of the material channel, it is formed by the forming device into a cylindrical shape, and then welded together longitudinally by the longitudinal sealer to be firmly sealed. The cross sealer completes the top sealing of the packaging bag and the bottom sealing of the next bag, forming two weld seams. Since the discharge channel is wrapped by the packaging bag, after the bottom sealing is welded, materials can be directly discharged into the bag, and then move to the next position to complete the top sealing, and then cut with a knife to complete the packaging process.
Roll packaging materials come in single-layer and multi-layer types. The single-layer ones include moisture-proof glass paper, polyethylene, polypropylene, and high-density polyethylene. The multi-layer ones include stretched polypropylene/polyethylene, polyethylene/glass paper/aluminum foil. There are also heat-sealable materials, etc. The packaging sealing types include pillow seal, three-side seal, and four-side seal, etc. The box-filling machine is used for packaging products for sales.
The box-filling machine is a mechanical device used for product packaging for sale. It fills a predetermined amount of material into a box and closes or seals the open part of the box. The box-filling machine is used for completing transportation packaging. It packs the packaged products in a certain arrangement and in a certain quantity into boxes, and closes or seals the open part of the box. Both the box-filling machine and the box-filling machine have functions such as container forming (or opening the container), measurement, loading, and sealing.
The typical process is as follows: The filling machine positions the flexible container, fills it according to the measurement, seals the tail end of the container, and then sends it to the box-filling machine. The box-filling machine first forms the box blank, wraps the flexible tube with liner paper, and then pushes it into the box to close the box opening. The small boxes are sent by the conveying device to the large-box stacking machine to be stacked. After stacking a predetermined number, the large box blank is formed in a wrapped manner as a container, and at the same time, the small boxes are placed inside and sealed with glue. The large boxes are sent to the box-packing machine to be stacked, and when a predetermined number is reached, they are placed in an open box. After packing, the box cover is sealed with glue by the box sealing label machine, and a tape is attached at the seam of the flap tongue or the box is tied firmly with a tying machine.