How to test the performance indicators of self-adhesive copperplate label paper?

Testing the performance indicators of self-adhesive copper plate label paper is a comprehensive process, involving multiple aspects of testing. Here are some of the main test methods and precautions:

First, viscosity test

Stickiness is one of the core performance indicators of self-adhesive label paper, and the test methods mainly include:

1.Initial adhesion test:

Rolling ball method: Fix the rubber side up on an inclined plane, and then let the steel balls of different sizes slide down from the above, the larger the steel balls that can stick, the greater the initial adhesive force.

2.Adhesion test:

Use two standard steel plates with hooks to attach self-adhesive labels, then hang one steel plate on the fixed frame, and place a certain weight (such as 2kg) at the other end, observe and record how long the following steel plate falls off, the longer the time, the better the adhesive force.

3.Stripping force test:

The self-adhesive label is pasted on the standard steel plate, and the label is torn off at a constant speed using the tension test equipment to record the required force value, which is the stripping force of the self-adhesive.

Second, weather resistance test

The performance of self-adhesive label paper under different environmental conditions is also an important performance indicator, including:

1.High temperature test:

Place the label in a high temperature environment, observe whether the label appears deformation, discoloration or viscosity reduction, and evaluate its stability in a high temperature environment.

2.Low temperature test:

Place the label in a low temperature environment and observe the adhesive performance of the label at low temperature. Low temperature may cause the label to be less adhesive or become brittle.

3.Moisture test:

Place the label in a high humidity or simulated rain environment to test the label's adhesion and water resistance under wet conditions.

4.Light test:

Expose the label to long-term sunlight or ultraviolet light, observe whether the label appears fading, aging and other phenomena, and evaluate its weather resistance when used outdoors.

Third, wear resistance test

The wear resistance test mainly evaluates the durability of the label during use, including:

1.Friction test:

Use a friction testing machine to simulate the friction that may be encountered during the transportation and use of the label, and observe whether the surface of the label is worn, scratched, or color faded.

2.Bending test:

Bend the label repeatedly, observe whether there is a crack or fracture at the bend, and test the durability of the label when it is subjected to bending force.

3.Scratch test:

Use a blade or sharp object to mark the surface of the label, observe whether the label is easy to be scratched or damaged, and evaluate its scratch resistance.

Fourth, other performance tests

1.Clarity test:

Ensure that the information on the label is clearly visible in all conditions, and check the printing quality and color stability.

2.Adhesion test:

Paste the label on the surface of different materials, and observe whether the label can be firmly attached to the surface, and there is no phenomenon of falling off or warping, to further verify the adhesion and durability of the label.

3.Water resistance test:

Evaluate the stability of the label in a flooded or humid environment to ensure that the label will not fall off or be damaged due to moisture.

4.Anti-alcohol test:

Simulate how the label behaves in an alcohol environment to ensure that it is not damaged by exposure to alcohol.

Fifth, precautions

1.Compliance with relevant standards and specifications:

When conducting tests, relevant industry standards and specifications should be followed to ensure the accuracy and reliability of test results.

2.Simulate the actual use environment:

The test should try to simulate the actual use environment of the label to accurately evaluate its performance under different conditions.

3.Use professional equipment:

Professional test equipment and standardized test methods are used to ensure the accuracy and repeatability of test results.

To sum up, testing the performance indicators of self-adhesive copperplate label paper is a comprehensive and meticulous process, involving multiple aspects of testing and evaluation. Through scientific testing methods and strict testing standards, we can ensure that the performance indicators of self-adhesive label paper meet the needs of practical applications.