Does the adhesive material discharge and fracture? These reasons cannot be ignored!

Some materials, such as glossy paper (also known as mirror coated paper), have short fibers and are relatively fragile. During the die cutting and waste disposal process, the tensile strength of the waste disposal edge is lower than the waste disposal tension of the equipment, making it easy to break.

If such situations occur, it is necessary to minimize the waste discharge tension of the equipment as much as possible. If the waste tension of the equipment has been adjusted to the lowest level but still cannot solve the problem, then it is necessary to design the waste edge wider in the early process design to ensure that the waste edge fracture will not occur frequently during the die-cutting process.

At present, many labels used for variable information printing in the market have easily torn dashed blade lines. Some adhesive label processing enterprises have to place the dashed blade and border knife in the same die-cutting station due to equipment limitations; In addition, due to cost and price factors, the waste disposal edge is designed very finely, usually only 1mm wide. This die-cutting process has extremely high requirements for label materials, and any carelessness can cause the waste edge to break, thereby affecting production efficiency.

The author suggests that self-adhesive label processing enterprises, if conditions permit, try to separate the easily torn virtual blade line from the label frame for die-cutting. This not only reduces the frequency of waste edge breakage, but also greatly improves the die-cutting speed. Enterprises without conditions can solve this problem by adjusting the proportion of dashed knives and removing the part where the dashed knife line exceeds the label border.