Primary Slitter Manufacturers introduced that the winding tension control methods of the slitter include equal moment tension control, constant tension control and taper tension control. When the winding torque is constant, the tension gradually decreases as the diameter of the film roll increases, which tends to cause the film roll to loosen. In addition, the mass will also increase with the increase of the roll diameter, and it is difficult to drive the film roll with a small torque, so it is not suitable for the winding of larger diameter materials under the condition of equal torque. Constant tension means to ensure that the tension is always constant during the winding process of the film roll. It is suitable for winding film rolls with small diameters. The disadvantage is that the tension is too small because the winding is too loose and easy to eccentric, and the tension is too high and the winding is too tight and damages the paper. core. The taper tension control is more flexible. The taper coefficient, diameter, initial torque and other parameters can be set according to different materials, so that the tension can be gradually reduced according to a certain range, so as to prevent the inner layer from being too tightly wound and slipping between the film layers. . Additionally, the taper value can be set to 0 for constant tension control.

Different slitting machine manufacturers have different algorithms for tension taper control. Improper taper setting may cause the core to be too tight and wrinkled, resulting in unnecessary waste in production. The slitting machine needs to wind up film rolls with larger diameter and heavier weight, and it must first ensure that there is sufficient torque. When setting the taper, factors such as film thickness, ductility, stability, and speed need to be considered comprehensively. If the taper coefficient is too large, the core will be too hard and the outside will be too loose. If the tension changes too sharply, the film layer will easily slip and cause partial roll phenomenon. If the taper coefficient is too small, the film winding is too tight, and internal stress accumulates to form a chrysanthemum pattern, which affects product quality. Lipu Machinery analyzed and summarized the output effects of various tapers through practice, and formulated different tension taper control methods according to different material characteristics to meet the process requirements of various film manufacturers.

Through the above introduction, Secondary Slitter Manufacturers hope that you can simply refer to the content of this article in future use.