Valve bags are very popular in the domestic market, especially in the small commodity wholesale market and the food industry. Many people who make it do not know that this kind of bag is made by a special valve bag making machine. What is the working process of the valve pocket bag making machine, let’s learn more about it together!

The working flow of valve bag making machine

HT120-IA Paper Tube Machine

1. Hopper feeding

The bag making machine is a hopper on which the powder is transported to the packaging machine by the feeder throughout the day. Device Control. The sealing paper roll is driven by the guide roll to the lapel forming machine. After bending, it is lapped into a cylinder with a longitudinal sealer. The material of the bag making machine is automatically measured and then loaded into the bag. The transverse sealer intermittently pulls down the bag cylinder while cutting off the heat seal to form a flat bag with overlapping longitudinal seams on three sides, and seals the seal of the bag.

2. Cutting

How to carry out the cutting of the bag making machine, the metal cutting process of the bag making machine is actually very similar to the metal extrusion process. When the gravure printing machine cuts plastic materials, the material begins to elastically deform under the action of the tool. As the tool continues to cut in, the stress and strain inside the metal continue to increase. When the stress reaches the yield point of the material, plastic deformation begins; Using computer control, the advanced (servo) fixed-length system makes the sealing and cutting size error small, and the electric eye is installed to make the printed pattern position. The length of the bag can be adjusted by computer numerical control. If there is a problem with the printing bag, the machine will automatically stop and give a warning sound.

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