Maintaining constant material tension and accurately controlling tension fluctuations is an important factor in improving production efficiency and controlling bag quality. Tension detection is the basic prerequisite for tension control.

The development of plastic bag making machines abroad is very fast. Since the 1990s, there has been great progress in technology. In addition to increasingly improved various auxiliary functions, production speed and high efficiency are important aspects, especially in the electrical aspect. Microelectronics technology is widely used

The non-woven bag making machine is a feeding machine that delivers powder (colloid or liquid) to the hopper above the packaging machine in real time. The introduction speed is controlled by the photoelectric positioning device. The rolled sealing paper (or other packaging materials) is driven by the guide roller to be introduced into the lapel forming machine.