How to test the stickiness of small roll of thermal label paper?

Test the stickiness of the small roll of thermal label paper can be mainly carried out by the following methods:

First, the initial adhesion test

Initial adhesion is the adhesion ability of the indicator paper when it is just pasted to the surface of the object. Commonly used test methods include rolling ball method and initial viscosity tester method.

1. Ball rolling method:

Steps: Attach the rubber side up to the bevel, then let the standard steel ball (of different sizes) slide off it. The larger the steel ball that can be adhered to, the greater the initial adhesion.

Note: The inclination Angle of the bevel and the standard of the steel ball should be maintained during the test to ensure the accuracy of the test results.

2. Initial viscosity tester method:

Instrument: Test with initial viscosity tester.

Step: The adhesive side is fixed on the inclined plane, the standard steel ball is briefly in contact with the label paper through the instrument, and the steel ball can be adhered to and the size of the adhesive ball is observed, so as to determine the initial adhesive force.

Second, lasting adhesion test

Lasting adhesion is an indicator of the ability of the paper to maintain adhesion after a long time. Commonly used test methods include suspension method.

1. Suspension method:

Step: Use a hook with adhesive to glue two standard steel plates together, one of the steel plates is attached to the label paper to be tested, and then hang the steel plate with the label paper on the fixed frame, and put a specified weight (such as 2kg) on the other end. Observe and record the time it takes for the underlying plate to fall off to assess the lasting adhesive strength of the label paper.

Third, stripping force test

Peeling force refers to the force required to peel the label paper from the adhesive surface. The peel force test can reflect the difficulty of the label during the removal process, and its impact on the paste surface.

1. Instrument test method:

Instrument: Test with a stripping force tester.

Step: Attach the label paper to the standard steel plate, tear off the label paper with uniform speed, the instrument will show the force required during the stripping process. The force is the peeling force of the label paper.

Matters needing attention

Environmental control: When conducting viscosity tests, ensure that the laboratory environment meets the standard requirements, such as room temperature, humidity, etc., to reduce the impact of environmental factors on the test results.

Standard materials: Use standard test materials and equipment, such as standard steel balls, standard steel plates, etc., to ensure the accuracy and comparability of test results.

Repeat test: To improve the reliability of the test results, you are advised to repeat the test multiple times and use the average value as the final result.

Through the above method, the adhesive properties of small roll thermal label paper can be comprehensively evaluated, and a reliable reference basis can be provided for practical application.