Static electricity is a big problem that is easily ignored. The following is the scope of the impact of static electricity and the solutions I have listed:

The factor of static electricity is often easily overlooked, but in actual production Medium static electricity is often a very important influencing factor. Static electricity is formed through friction and induction, and is more obvious on thin films. Therefore, the entire self-adhesive manufacturing and printing process will generate electrostatic charges on materials and machines. If not removed in time, it will cause a lot of trouble and quality problems for the self-adhesive tape. Problems that may be caused by static electricity during label processing :

1) Printing quality (all printing methods): It appears as pinholes or web loss on the label. Each defect is caused by a certain amount of partial discharge of charge (can be seen as a small explosion) Cause;

2) Ink aggregation or repulsion: Static electricity on the material or machine will cause the ink to be unevenly distributed on the material, making it look darker and shallower;

3) Die cutting / Waste discharge quality: the label and the discharge waste material are swept away together, so the operator often mistakenly thinks that the pressure of the die-cutting knife is insufficient, and applies more pressure to the die-cutting knife. In this way, the cutter is easily worn or damaged, thus causing serious problems. Reduce service life.

4) Tension quality: When slitting and rewinding materials, excessive static electricity will lead to uneven rewinding and glue seepage.

5) Lamination quality: Due to electrostatic attraction, the lamination layer is attached prematurely, resulting in uneven lamination.

6) Labeling quality: The label does not come out normally during labeling, but runs with the bottom paper, which affects the labeling speed and quality.

7) Hole punching quality: After punching holes in the label, the waste material still stays on the paper.

8) Thermal transfer/laser printing quality: Some parts can be printed well, some cannot be printed, and the printing quality is different (dark or light).

9) Dust is sucked onto the substrate or printing plate, forming fisheye or white spot defects on the printed product;

10) Electric shock to operators or other employees: this Many rotary printing press operators have experienced this, which not only reduces product output and quality, worsens the operator's working conditions, but even causes fires and other serious accidents;

11) Solution to static electricity problems:< /p>

(1) Induction: Set metal wires on the printing path to remove or neutralize static electricity. Simple and low-cost, but requires pre-selected installation. The metal wires and machines used to remove static electricity must be well grounded respectively. Some printing machines connect static-removing metal wires to the machine cabinet, which often does not achieve the best static-removing effect. Charges will accumulate on the machine, which can also cause quality problems. The distance between the metal wire and the material is also very important. Generally, the metal wire should not be in direct contact with the surface of the substrate. A slight distance will provide better results. If the material is thicker, double-sided removal will be better. If the material is thicker, double-sided removal will be better. The effect is better. However, it should be noted that when removing both sides, the metal wires should not be distributed symmetrically in pairs. If they are installed staggered, the effect will increase day by day.

(2) Ionization: Use materials that can release a large number of positive and negative ions. The charged material absorbs the required number of positive and negative ions according to the neutralization needs. This method requires specialized equipment, but the results are ideal. Hope this helps!