After the aluminum foil is printed and coated, it needs to be post-printed and slit on the slitting machine. In the slitting operation, it is necessary to always pay attention to the change of the tension of the aluminum foil winding and unwinding, because it is affected by factors such as material, weight, thickness uniformity, and slitting speed. Influence, when setting the tension of rewinding and unwinding, it must be adapted to these characteristics of aluminum foil. In order to ensure the accuracy of the tension of rewinding and unwinding, when the tension detection roller of the rewinding and unwinding mechanism should be higher than the maximum speed, the dynamic balance treatment should be carried out, and the surface should have enough wrap angle during use to provide accurate running tension. Ensure the stability of product quality.
Analysis of Causes of Slitting Quality Defects
The problem of scratches is the most common problem in the slitting process, and it is also the most difficult problem to completely solve. The main reason for the scratches is that the end face of the disc knife or the shim and the cutter shaft is misaligned when the sharp corner is assembled. When the aluminum foil slides over the sharp corner, the material of the lower knife or the shim is harder than the aluminum foil, and at a certain speed , There is a very small slip in the extreme time, which is reflected in the point-like or linear scratches on the material surface.
The aluminum foil is prone to flanging and pitting during the slitting process, which is mainly caused by the sticking of aluminum powder to the knife. There are two sources of aluminum powder, one is the aluminum powder attached to the surface of the aluminum foil, and the other is the aluminum powder produced during the shearing process. These two parts of aluminum powder blunt the knife after the tip I. gathers, causing the material surface to flange. When the aluminum powder falls on the material surface, the fork will cause pressure pits.
Household Aluminum Foil Alloy 8011 In Jumbo Rools In fact, in our daily lives, we can really see that aluminum foil is used in many places.