How to solve the problem of the back of the self-adhesive label

The problem of the back of the self-adhesive label is a common problem in the printing and subsequent treatment process, which may be caused by a variety of factors, such as ink printing, improper moisture control of the printed page, and the characteristics of the self-adhesive material. The following are some suggestions to solve the problem of the back of the sticker:

1. Control ink through printing

Choose the right paper: Using a paper with high tightness and moderate ink absorption can reduce the possibility of ink penetration.

Increase the viscosity of the ink: appropriately increase the viscosity of the ink, so that it is not easy to penetrate the paper to the back.

Reduce the printing pressure: under the premise of not affecting the printing quality, the appropriate reduction of the printing pressure can reduce the penetration of ink.

2. Control the moisture content of the printed page

Maintain ink balance: In the printing process, it is necessary to strictly control the balance of layout moisture and ink to avoid excessive moisture resulting in serious ink emulsification, thereby increasing the risk of printing through.

Use the least amount of layout moisture: under the premise of ensuring the printing quality, use as little layout moisture as possible to make the surface of the self-adhesive label more smooth and dry, reducing the possibility of dirt.

3. Improve the material characteristics of self-adhesive

Select high-quality self-adhesive materials: Ensure that the surface coating layer of the self-adhesive material has good ink absorption and permeability resistance to reduce ink penetration and backside dirt.

Moderate addition of anti-stick agent: In the printing process, you can moderately add anti-stick agent to the ink to improve the anti-stick and drying speed of the ink, reduce the back rub.

4. Use powder spraying device

Install a powder spraying device: Install a powder spraying device in the paper receiving part of the printing press, so that the fine particles of calcium carbonate powder are dispersed between the printing sheets, forming an isolation layer to prevent direct contact and dirty between the printing sheets.

5. Optimize the printing process and equipment

Regular maintenance of printing equipment: ensure the normal operation and good condition of printing equipment to avoid printing quality problems caused by equipment failure.

Adjust the printing speed and temperature: according to the characteristics of the self-adhesive material and printing requirements, adjust the printing speed and temperature to obtain the best printing effect and reduce the back rub.

6. Pay attention to storage and transportation conditions

Avoid high temperature and high humidity environment: When storing and transporting self-adhesive labels, avoid being in a high temperature and high humidity environment for a long time, so as to avoid the moisture absorption deformation of self-adhesive materials or ink softening resulting in dirt.

Handle the label gently: When handling or handling the label, handle the label gently to avoid heavy vibration and friction.

In summary, to solve the problem of the back of the self-adhesive label, it is necessary to consider multiple factors such as ink, paper, printing process and equipment, storage and transportation conditions. By taking the above measures, the risk of rubbing on the back of the self-adhesive label can be effectively reduced and the quality and stability of the printed matter can be improved.