How to detect the quality of self-adhesive coated paper?

Testing the quality of self-adhesive coated paper is a comprehensive process that involves many aspects of testing items. Here are some of the main detection methods and key points:

First, appearance detection

1. Flatness and smoothness:

Use visual inspection method to check whether the surface of self-adhesive coated paper is smooth, smooth, no bubbles, wrinkles, scratches and other defects.

More detailed inspection with equipment such as appearance detector.

2. Color and Pattern:

Check whether the color of the paper is uniform, whether the pattern is clear, no color difference, overlapping shadow, lack of color, deformation and other defects.

Second, size detection

Use measuring tools such as calipers, micrometers, etc. to measure the length, width, thickness and other dimensional parameters of self-adhesive coated paper to ensure that it meets relevant standards or customer requirements.

Third, viscosity detection

1. Initial viscosity test:

The initial adhesive tester was used to test the instantaneous adhesive force of the self-adhesive coated paper and evaluate the adhesive speed during the labeling process.

2. Stickiness test:

The adhesive tester is used to detect the lasting adhesive force of the self-adhesive coated paper, that is, the holding time.

3. Peel strength test:

Through the stripping force tester, the adhesive is stripped from the adhesive surface under specific conditions, the force required for stripping is measured, and the degree of its stripping difficulty is assessed.

Fourth, weather resistance detection

1. Temperature stability:

The self-adhesive coated paper is heated or cooled under high and low temperature conditions, and then the change in its adhesion force is measured to evaluate its reliability under extreme temperature conditions.

2. Humidity stability:

Humidity stability tester was used to test the stability of self-adhesive coated paper in high humidity environment and evaluate its moisture resistance.

3. Light resistance and aging resistance:

Through exposure to ultraviolet lamps or other light sources, observe the change of color, adhesion and physical state of the self-adhesive coated paper, and evaluate its light resistance and aging resistance.

Fifth, printing performance testing

1. Ink absorption:

Apply a certain amount of ink to the surface of the paper, and measure its drying time or absorption depth to evaluate its ink absorption.

2. Printing clarity:

Methods such as printability test and printing fastness test are used to evaluate the printing clarity and ink adhesion of self-adhesive coated paper.

Sixth, other testing items

1. Environmental protection test:

The environmental performance test instrument was used to test the content of volatile organic compounds, heavy metals, chloride ions and other harmful substances in the self-adhesive coated paper to evaluate its environmental performance.

2. Paper quality:

Test paper thickness, whiteness, gloss, etc., to ensure that the paper meets the production requirements of self-adhesive.

Seventh, detection steps

1. Prepare sample:

Random samples are taken from the same batch of products for testing.

2. Select the right test method and instrument:

Select appropriate testing instruments and methods according to different testing items.

3. To detect:

Perform tests according to standards or customer requirements, and record data.

4. Evaluation and reporting:

Evaluate the quality of self-adhesive coated paper according to the test results, and issue a formal test report.

Through the above comprehensive detection methods and steps, the quality of self-adhesive coated paper can be comprehensively evaluated to ensure that it can present the best printing effect and use performance in practical applications.