Under the pressure of the sealing knife, although the mouth of the bag is sealed, but a little harder squeezing or peeling, the sealing will crack again. The main reasons for the weak sealing failure of the wet wipes packaging machine are as follows:
(1) The heat-sealing temperature of the wet wipes packaging machine is not enough. The problem can be solved by appropriately increasing the heat-sealing temperature.
(2) The surface of the heat-sealing knife is not flat enough. The heat-sealing knife is divided into two pieces, the upper and lower pieces, and usually thermocouples are installed in them to sense the temperature transfer. The main reason for the uneven surface of the heat-sealing knife is that the middle screw is installed obliquely, not horizontal, or the pressure spring of the heat-sealing knife on the wet tissue machine is uneven. The solution is to re-correct the position of the middle screw to make it level. If the upper and lower heat-sealing knives are unbalanced, it must be achieved by adjusting the pressure spring, and the adjustment can be moderate. When the spring is retracted outward, the heat-sealing knife will fall downward; when the spring of the lower blade is tightened upward, the heat-sealing knife will move upward.
