How to improve the stickiness and printability of self-adhesive coated paper?

Improving the stickiness and printability of self-adhesive coated paper can be started from many aspects, including choosing the right glue, controlling the printing environment, optimizing the printing process, and paying attention to the preservation and transportation of materials. Here are some specific suggestions:

First, improve viscosity

1. Choose the right glue:

Glue with higher viscosity should be selected to increase the stickiness of the label and make it more firmly attached to the object.

Different types of glue are applicable to different application scenarios. You need to select the appropriate glue type based on your specific requirements.

2. Prepare a suitable paste surface:

Before pasting, ensure that the pasting surface is clean and clean to remove impurities, oil, rust, etc., which helps to improve the adhesion of the adhesive.

You can clean the pasted surface with a cleaner and wipe it dry with a clean cloth to ensure the surface is dry and smooth.

3. Adjust ambient temperature and humidity:

If the low temperature or humid environment affects the performance of the adhesive, its viscosity can be improved by heating the adhesive or adjusting the ambient temperature and humidity.

Second, improve the suitability of printing

1. Control printing humidity:

Before printing, the label surface is pre-treated to smooth the surface, reduce the moisture content, and increase the water absorption of the label, which helps to improve the printing effect.

2. Select the appropriate printing equipment and process:

For the fur structure of coated paper, appropriate printing equipment and printing methods, such as letterpress (web printing) and offset printing (sheet printing), should be selected to ensure printing quality.

In the printing process, appropriate adjustment of printing process parameters, such as dot size, dot Angle, dot shape, etc., to solve the problem of poor printing quality.

3. Optimize ink selection and application:

Select high-quality ink to ensure that the viscosity, fluidity, dryness and other indicators of ink are suitable for the printing needs of coated paper.

According to the specific requirements of printed matter, reasonable allocation of ink color to avoid the use of expired or unstable physical and chemical indicators of ink.

4. Control printing pressure:

Adjust the pad technology and printing pressure to ensure that the printing ink layer is uniform and bright. The printing pressure should be uniform and appropriate to avoid problems caused by too much or too little.

When printing, pay attention to adjusting the center distance between the embossed cylinder and the rubber cylinder to adapt to different thicknesses of paper.

5. Note double sheet control and paper feed adjustment:

Since the adhesive is usually the thickness of two layers of coated paper, it is necessary to pay attention to the gap between the double controller and the distance between the press tongue and the delivery board of the side gauge and the front gauge.

Adjust the air volume of the suction nozzle and the blowing nozzle of the paper feeding part, as well as the diameter and thickness of the rubber ring of the suction nozzle and the feeding nozzle to achieve smooth paper feeding.

Third, other precautions

1. Preservation and transportation of materials:

Try to avoid extrusion and vibration during transportation and storage to ensure that the quality of the adhesive is not affected.

The adhesive should be stored in a dry, ventilated, light and wet place to avoid being affected by the external environment.

2. Regular maintenance and inspection of equipment:

Keep the printing equipment in good condition, replace and clean the roller and other parts regularly, to ensure that the system is even and the printing plate is even.

Check the accuracy of the die cutting device to ensure the waste and application effect of the label.

To sum up, improving the stickiness and printability of self-adhesive coated paper needs to be comprehensively considered and implemented from many aspects. By choosing the right glue, optimizing the printing process, paying attention to the preservation and transportation of materials, and regular maintenance and inspection of equipment, the printing quality and adhesion of self-adhesive coated paper can be significantly improved.