How to test the weather resistance and chemical resistance of self-adhesive labels

The weather resistance and chemical resistance test of self-adhesive labels are important indicators to evaluate their performance under different environmental conditions. The following is a detailed explanation of the two test methods:

First, the weather resistance test of self-adhesive labels

The weather resistance test is mainly to check the adhesion and appearance retention ability of the label under different environmental conditions. Specific test methods include:

High temperature test:

Objective: To observe whether the label has deformation, discoloration or viscosity reduction in high temperature environment.

Method: The label was placed in a set high temperature environment for a period of time to check the adhesion performance and appearance of the label.

Standards: Comply with relevant standards and specifications to ensure the accuracy and reliability of test results.

Low temperature test:

Objective: To evaluate the adhesive properties of labels at low temperatures, which may cause them to become less sticky or brittle.

Methods: The label was placed in a low temperature environment to observe its adhesion and appearance changes under low temperature conditions.

Moisture test:

Objective: To test the adhesion and water resistance of labels under wet conditions.

Methods: The label was placed in a high humidity environment or simulated rain conditions to observe its adhesion and appearance retention ability.

Light test:

Objective: To evaluate the weatherability of labels under long-term sunlight or ultraviolet irradiation, and observe whether there are fading, aging and other phenomena.

Method: Expose the label to sunlight or ultraviolet light and check its appearance after a period of time.

Second, chemical resistance test of self-adhesive labels

Chemical resistance test is mainly to measure the stability of self-adhesive labels in different chemical media, including oil resistance and acid and alkali resistance. Specific test methods include:

Oil resistance test:

Objective: To evaluate the stability of labels in oil medium and observe whether swelling, deformation and viscosity decrease occur.

Method: Immerse the label in the standard reference oil for a period of time (such as 24 hours, 72 hours or 7 days), observe and record the change of the label. At the same time, the label can also be attached to the stainless steel plate and then immersed in the oil as a whole to evaluate the oil resistance of the label in practical applications.

Acid and alkali resistance test:

Objective: To test the stability of the label in acid-base solution and observe whether it has discoloration, corrosion, viscosity reduction and other phenomena.

Method: The label was immersed in the standard acid-base solution for a period of time to observe and record the change of the label. Similarly, the label can also be attached to the stainless steel plate for testing.

Matters needing attention

When conducting weather resistance and chemical resistance tests, it should be ensured that the test conditions meet the relevant standards and specifications to ensure the accuracy and reliability of the test results.

Select appropriate test methods and standards according to the specific application scenarios and requirements of self-adhesive labels.

During the test, test conditions, test process and test results should be recorded in detail for subsequent analysis and evaluation.

Through the above test methods, we can fully understand the weather resistance and chemical resistance of self-adhesive labels under different environmental conditions, so as to choose more suitable label materials for specific application scenarios.