In the packaging equipment industry, due to the late start, low starting point and small scale, the overall level of my country's packaging machinery is lagging behind that of developed countries. Some data show that in 2005 my country's packaging machinery production has reached 670,000 units (sets), by 2010 will increase to 930,000 units (sets). At present, my country's packaging machinery has become one of the top ten industries in the machinery industry. As a type of packaging machinery, vertical packaging machinery will also be sold in the packaging market with market demand.

Vertical packaging machine is a machine that makes a roll-shaped flexible packaging material into a bag, and after filling the material, seals it, and the three functions are automatically completed continuously. In conjunction with the previous metering and filling machine, the vertical packaging machine is often used for packaging block, flake, granular, stalk, powder, and fluid and semi-fluid materials.

The characteristic of the vertical packaging machine is that the feeding cylinder of the packaged material is arranged inside the bag maker, and the bag making and filling are carried out in the vertical direction from top to bottom. The vertical packaging machine is mainly composed of measuring device, transmission system, horizontal and vertical sealing device, former, filling tube and film pulling and feeding mechanism.

Its working principle is as follows: the roll film placed on the support device is wound around the guide roller group and the tensioning device. After the photoelectric detection control device detects the position of the trademark pattern on the packaging material, it is rolled into a film cylinder by the former. Wrapped on the surface of the filling tube. First, the longitudinal heat sealer is used to longitudinally heat seal the film at the interface part rolled into a cylinder to obtain a sealed tube, and then the cylindrical film is moved to the transverse heat sealer for transverse sealing to form a packaging bag tube. The metering device fills the measured items into the packaging bag through the upper filling tube, and then heat-seals it by a transverse heat sealer and cuts it in the middle to form a packaging bag unit body, and at the same time form the bottom seal of the next tube bag.