How to change the process angle to solve the self-adhesive material in the die-cutting exhaust breakage problem?

🔎 Self-adhesive materials in the die-cutting process, the occurrence of die-cutting waste fracture in addition to the replacement of raw materials, there are many ways to solve the problem by changing the angle of the process, such as diagonal waste, pre-stripping, straight rows, heating, vacuum suction waste, misalignment method.

1️⃣ . Oblique waste
In the die-cutting shaped labels, die-cutting die number is more, because of the waste when the waste collection tension is not consistent, it is easy to appear on one side of the belt can not afford or broken phenomenon, then you can adjust the angle of the waste guide roller to solve the problem of waste breakage.

2️⃣ . Pre-peeling
In the die-cutting shaped labels, labels, larger paper labels, waste fracture can be done through the die-cutting before the pre-stripping treatment, so that the waste material stripping force is reduced. After pre-peeling treatment of the material, the peeling force can be reduced by 30% to 50%, the specific peeling force to reduce the value depending on the material. It is worth noting that the effect of online pre-peeling is better.

3️⃣ . Straight row method
For high grammage and die-cutting modulus is more leading to waste fracture, you can use the straight row method, waste before minimize contact with the paper guide rollers, to prevent extrusion due to tension, the glue will overflow so that the label and the waste side of the sticky edge.

4️⃣ . Vacuum suction waste method
Die-cutting, part of the label is very large, you can use the suction nozzle to suck out the waste side of the way to waste, but should pay attention to the stability of the suction wind, suction size should be combined with the thickness of the material, the size of the waste side of the speed of the machine, the method can be realized without stopping the waste.

5️⃣ . Misalignment method
Paper type material die-cutting die number is more, the width of the cross diameter is small, row waste when the cross diameter is easy to break or row can not afford, do the knife will be staggered columns and columns, you can buffer the cross diameter of the waste of the tension, but also to improve the use of the knife and die cycle.

May I ask which kind of waste discharge method is used in your label printing process? If you have encountered any problems, please share your experience with us. @sinopackindustry