What are the ink adhesion test methods for wax-based carbon tape?

There are several main ink adhesion test methods for wax-based carbon tape, which are designed to evaluate the adhesion strength and durability of the ink on the substrate material (such as paper, plastic, etc.) :

1. Stripping method

How to do it: Use a specific type of tape (such as 3M tape) to attach the printed wax-based carbon tape at an Angle, then quickly peel the tape, and observe and assess the amount of ink that is removed.

Evaluation criteria: According to the ink residue on the tape after stripping to determine the adhesion of the ink. If there is a lot of ink residue on the tape, it means that the ink adhesion is not good.

Note: A constant speed and Angle should be maintained when stripping to ensure the accuracy of the test results.

2. Stretching

Operation principle: By applying tension to the printed matter, observe whether the ink layer falls off, so as to evaluate the adhesion of the ink.

Equipment requirements: It is usually necessary to use a special coating tension testing machine for determination.

Evaluation criteria: Record the tensile force required to break the adhesion between the coating or the substrate, the greater the tensile force value, the stronger the ink adhesion.

3. Rub method

Operation steps: The printing surface of the two prints is stacked together, apply a certain pressure and rub repeatedly.

Evaluation criteria: Observe whether the ink layer falls off after rubbing, in order to judge the adhesion of the ink. If there are obvious scratches or ink off after rubbing, it indicates that the ink adhesion is poor.

4. Scratch-resistant method

How to do it: Use your fingernail or a hard scraper to apply moderate pressure to the dried ink layer repeatedly.

Evaluation criteria: Observe whether the ink layer scratches or falls off after scraping. If there is a scratch or ink off, it means that the ink attachment is not ideal.

5. Tape stripping resistance test

How to do it: Use a specific type of tape (such as 3M 610 or 810 adhesive tape) to evenly paste on the printed sample, and press the back of the tape with your finger to make it stick firmly, and then pull the tape at a medium speed to observe the ink sticking.

Evaluation criteria: If there is ink residue on the tape, it indicates that the ink does not adhere well to the substrate material.

6. Wet friction test

Operation steps: Similar to the dry friction test, but in the middle of the two prints need to add a little water, and then repeated friction.

Evaluation criteria: Observe whether the ink layer is shed or blurred after friction, in order to evaluate the adhesion of the ink in a wet environment.

Matters needing attention

When conducting the above tests, ensure that the test conditions (such as temperature, humidity, etc.) meet the standard requirements to ensure the accuracy of the test results.

Depending on the application requirements and the characteristics of the substrate material, it may be necessary to select the appropriate test method and evaluation criteria.

For certain wax-based carbon strip products with special requirements, additional specialized tests may be required to fully evaluate their performance.

The above test methods are for reference only, and the specific test plan should be determined according to product standards and customer needs.