How to solve the problem of warping off of self-adhesive coated paper?

The problem of warping and falling off of self-adhesive coated paper may be caused by a variety of factors, including material selection, environmental conditions, and operating processes. Here are some specific solutions:

1. Material selection and treatment

Choose the right adhesive: The problem of warping off of self-adhesive coated paper may be related to the performance of the adhesive. An adhesive with large viscosity and strong initial viscosity should be selected to ensure that the label can be firmly attached to the object.

Check the self-adhesive material: ensure that the quality of the self-adhesive material is qualified and suitable for coated paper. Some special-purpose self-adhesive materials may be more suitable for coated paper because they have better adhesion and durability.

Clean the surface of the coated paper: Before labeling, the surface of the coated paper should be carefully cleaned to ensure that there is no dust, oil stains or other debris, which will affect the adhesion of the adhesive.

2. Environmental condition control

Control temperature and humidity: Self-adhesive labels are difficult to be completely stored in an environment where the temperature is too high or too low. Therefore, ensure that the temperature and humidity of the labeling and storage environment are appropriate to avoid extreme conditions that may cause the label to warp or fall off.

Ventilation and drying: Choose a dry and ventilated environment for the production and storage of self-adhesive coated paper to reduce the impact of humidity on label performance.

3. Operation process optimization

Adjust the parameters of the labeling machine: If the automatic labeling machine is used for labeling, check and adjust the press wheel pressure and scraper position of the labeling machine to ensure that the label can be evenly and tightly pasted on the coated paper. In particular, pay attention to whether the press wheel pressure is sufficient, and whether the scraper forms synchronous line contact with the label surface.

Manual labeling precautions: If it is manual labeling, ensure that the label is in full contact with the surface of the paste, and apply appropriate pressure to make the adhesive tightly bonded to the paste.

4. Storage and transportation

Correct storage: Self-adhesive coated paper labels should be stored in a suitable temperature, dry and ventilated environment, avoid direct sunlight and high temperature and humidity conditions.

Transport with care: During the transport process, avoid physical damage to the label such as extrusion and collision, which may cause the label to warp or fall off.

5. Other suggestions

Consult professional technical personnel: If the above methods cannot solve the problem, it is recommended to consult the self-adhesive label manufacturer or professional technical personnel to obtain a more specific solution.

Regular inspection and maintenance: For equipment such as automatic labeling machine, regular inspection and maintenance should be carried out to ensure that it is in good working condition, so as to reduce the labeling problems caused by equipment failure.

In summary, to solve the problem of warping and falling off of self-adhesive coated paper, it is necessary to comprehensively consider material selection, environmental conditions, operation process and other aspects. By taking the above measures, the labeling quality and service life of self-adhesive coated paper can be effectively improved.