After long-term storage, what will happen to the performance of self-adhesive coated paper?

After long-term storage, the performance of self-adhesive coated paper may undergo a series of changes, which are mainly affected by the storage environment, such as temperature, humidity, light and so on. Here are some possible changes:

1. The viscosity is weakened

Reason: The adhesive on the self-adhesive coated paper will gradually age with the passage of time and the influence of environmental factors, causing its viscosity to weaken. High temperatures, humidity and ultraviolet radiation all accelerate the aging process of adhesives.

Impact: The weakening of stickiness will directly affect the adhesion effect of the self-adhesive coated paper, making it difficult to firmly paste on the target surface, and even may fall off.

2. Deformation and curling

Reason: Self-adhesive coated paper in the storage process, if affected by humidity changes, the paper will absorb or lose water, resulting in changes in its dimensional stability and flatness. Too high humidity will cause the paper to absorb moisture and expand, while too low humidity will cause the paper to dry and shrink, which will cause deformation and curling.

Impact: Deformed and crimped self-adhesive coated paper is difficult to keep flat when used, which will affect the labeling effect and beauty.

3. Fading and aging

Reason: long-term light and ultraviolet radiation will cause the ink and coating on the surface of the self-adhesive coated paper to fade and age. In addition, high temperature and oxidation will also accelerate the process.

Impact: Fading and aging will reduce the appearance quality of self-adhesive coated paper, affecting its recognition and readability.

4. Hardness and mechanical properties change

Reason: The hardness and mechanical properties of self-adhesive coated paper will also be affected by the storage environment. For example, too much humidity will cause the paper to become soft, while a dry environment may make it hard and brittle. In addition, physical stresses during long-term storage can also lead to small changes in the internal structure of the material.

Impact: Changes in hardness and mechanical properties will directly affect the use of adhesive coated paper, such as wear resistance, tear resistance and so on.

Ways to mitigate change:

Choose the right storage environment: keep the temperature, humidity and light conditions of the storage environment within the recommended range to avoid the adverse effects of extreme environments on self-adhesive coated paper.

Packaging and protection: The use of moisture-proof and UV-proof packaging materials to package and protect the self-adhesive coated paper to reduce the impact of environmental factors on its performance.

Regular inspection and rotation: For long-term storage of self-adhesive coated paper, regular inspection and rotation should be carried out to avoid the use of expired or degraded materials.

In summary, after long-term storage, the performance of self-adhesive coated paper may suffer from viscosity weakening, deformation and curling, fading and aging, as well as changes in hardness and mechanical properties. In order to slow down these changes, appropriate storage and protection measures need to be taken.