How to solve the problem when the die cutting machine? Many staff due to improper operation, or the quality of the die-cutting machine itself has a problem, resulting in can not be used, then the following small make a summary of the problem, I hope to help you.

First, die cutting constantly

First of all, we should check whether the location of the die cutting machine constantly has a repetitive problem, if it is a regular recurrence, then the problem must be related to the die cutting knife. In this case. If it is a flat pressure die cutting, you can adjust the pressure locally. 

If the die-cutting constant problem is not regularly recurring, then the problem may be caused by the machine gear precision, the running tension of the material, and insufficient die-cutting pressure. In this case, need to check the material running tension, adjust the die cutting pressure to solve. 

Second, die-cutting overflow glue

Die-cutting overflow refers to the self-adhesive trademark die-cutting machine process, overflow of glue at the edge of the label, it is a common defect of self-adhesive products performance. 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 adhesives, adhesive processing performance and other characteristics, therefore, before production should consult with the material suppliers and related performance characteristics, choose the material suitable for your processing technology.

2. Label processing, storage environment control: die-cutting machine label processing and storage environment temperature should be controlled in the range of 23 degrees Celsius +/- 3 degrees, humidity should be controlled in the range of relative 55 +/- 5%, too high temperature and humidity will improve the fluidity of the adhesive, in the actual production, we can clearly feel that in the summer production, die-cutting overflowing glue phenomenon is relatively common, on the contrary, the winter will be very little, and that is the reason. This is the reason.

3. die-cutting quality control: die-cutting machine must use sharp knives on the label for die-cutting, blunt knife blade will be formed on the label adhesive flip extrusion, resulting in the die-cutting process 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 of adhesive pulling phenomenon, thus in the label edges or the label surface to form the overflow of adhesive. Therefore, the choice of die cutting knife is the key. 

4. Label processing process control: die-cutting machine should be avoided in the label processing process there is a sliding friction on the label, and the existence of sliding friction with the label on the components are prone to accumulation of die-cutting adhesive, and then on the edge of the label to form a contamination of the phenomenon of overflow of glue in the label will be the location of the obvious regularity and directionality.

5. Label rewinding tension control: die-cutting machine is too large rewinding tension on the label adhesive over formation of extrusion, and even cause the label in 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. Area of small square-shaped labels, due to the same pressure, to withstand a greater pressure, it is also easy to label the phenomenon of overflow.

Third, die-cutting base paper cut through

In many manual labelling products, die-cutting machine die-cutting backing paper cut through the phenomenon is very common, which is mainly the customer die-cutting device precision limitations and labelling methods on the backing paper without tension requirements; if it is an automatic labelling, die-cutting backing paper cut through often lead to end-users in the automatic labelling, encountered label backing paper fracture. Therefore, we should choose to die-cutting accuracy of the hob die-cutting method.

Fourth, other considerations 

1. Do not use the die cutting paper die cutting knife to die cutting film. Because the knife blade has been worn out after die cutting paper.

2. In the process of die-cutting, use 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.