Problems and solutions for die-cutting machines
Release time:
2023-05-24
Source:
Due to improper operation, resulting in can not be applied properly, if not dealt with in a timely manner, will lead to which damage to the die-cutting machine, the next hengfei editorial give you a list of the above problems and solutions, I hope to help you.
First, die cutting constantly
First of all, we should check whether the position of the die cutting constantly has repeatability, if it is a regular recurrence, then the problem must be related to the die cutting knife die. In this case, if it is flat die cutting, you can adjust the pressure in the local.
If the problem of constant die cutting is not regularly recurring, then the problem may be caused by the precision of the machine gears, the running tension of the material, and insufficient die cutting pressure. In this case, you need to check the material running tension, adjust the die cutting pressure to solve.
Second, die-cutting overflow
Die-cutting overflow refers to the label die-cutting process after die-cutting, overflowing glue at the edge of the label, it is a common defective performance of self-adhesive products. Overflow will lead to label appearance defects, print pollution, peeling problems. Die-cutting overflow of glue from the following aspects of the problem is also solved.
1. Label material performance analysis: different types of materials have different types of adhesive, adhesive processing performance and other characteristics, therefore, before production should consult with the material supplier relevant performance characteristics, choose the material suitable for your processing technology.
2. Label die-cutting quality control: sharp knives should be used to die-cutting labels, blunt knife blade will be formed on the label adhesive overcrowding, resulting in the die-cutting process of the label edge overflow phenomenon. Too deep die cutting pressure will also form excessive pressure on the label adhesive extrusion, too shallow die cutting pressure may cause in the die cutting process adhesive drawing phenomenon, so as to form in the label edge or label surface overflow. Therefore, the choice of die cutting knife is the key.
3. Label processing control: should be avoided in the label processing process there is a sliding friction on the label, and the existence of sliding friction on the label parts are prone to accumulation of die-cutting adhesive, and then the formation of contamination on the edge of the label, so that the overflow of rubber phenomenon in the position of the label will be a clear regularity and directionality.
4. Label rewinding tension control: too much rewinding tension on the label adhesive over-formation of extrusion, and even cause the label on the backing paper slip, will cause the label overflow. Non-square shaped labels, due to the rewinding tension in the axial direction of the inconsistency, easy to cause local tension phenomenon, the formation of the label of the local overflow. Small area of square-shaped labels, due to the same pressure, to withstand a greater pressure, it is also easy to label the phenomenon of overflow.
Fourth, other precautions
1. Do not use the die-cutting paper die cutting knife to die cutting film. Because the knife blade has been worn after die cutting paper.
2. die-cutting process, the use of special marking pen or marking brush and other inspection tools to check the quality of die-cutting, do not just observe with eyes.
3. To die-cut PET materials, always use a sharp-edged, hardened die-cutting knife.
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