During the die-cutting process of self-adhesive materials, die-cut waste discharge fracture occurs. In addition to replacing the raw materials, there are many ways to solve problems by changing the process angle, such as oblique waste discharge, pre-peeling, direct discharge, hea

self-adhesive material During the die cutting process, die cutting waste discharge fracture occurs. In addition to replacing the raw materials, there are many ways to solve the problem by changing the process angle, such as oblique waste discharge, pre-peeling, direct discharge, heating, vacuum waste absorption, dislocation method, etc.

1. When the diagonal waste discharge
has a large number of die-cut special-shaped tags and die-cut modules, because the waste collection tension is inconsistent during waste discharge, it is easy to cause one side to be unable to carry or break. At this time, the problem of waste discharge and fracture can be solved by adjusting the angle of the waste guide roller.

2. Pre-peeling
When die-cutting special-shaped tags and large paper-like tags, waste discharge can be pre-peeled before die-cutting, so that the material peeling force during waste discharge is reduced. The peeling force of the material after pre-peeling treatment can be reduced by 30% to 50%. The specific peeling force reduction value depends on the material. It is worth noting that online pre-stripping is better.

3. Direct discharge method
is used to prevent the overflow of waste discharge and the large die cutting module, and the direct discharge method can be used to minimize contact with the paper conveying guide roller before discharge, so as to prevent the overflow of glue and the label and the waste edge from being stuck.

4. Vacuum waste suction method
die cutting, some tags are large, and waste discharge can be discharged by the suction nozzle, but attention should be paid to the stability of the air suction. The suction force should be determined by the thickness of the material, the size of the waste edge, and the speed of the machine. This method can achieve waste discharge without stopping.

5. Dislocation method
paper materials have a large number of die cutting modules and a small width of horizontal diameter. The horizontal diameter is easy to break or cannot be discharged during waste discharge. When making a knife, the columns and columns can be staggered, which can buffer the tension when the horizontal diameter is scrapped, and can also increase the usage cycle of knife mold .