The adhesion tester is an instrument used to test the retention force of tape or other adhesive materials. It is usually used to evaluate whether tape can still maintain its adhesion after a certain period of time, as well as to evaluate the performance differences of different tapes or adhesives.

The working principle of a adhesion tester is usually to apply a certain length and width of tape to a specific testing surface, and then apply a certain amount of pressure to make the tape fully contact the testing surface. After a certain period of time, pull up the tape at a constant speed and measure the required force to evaluate the retention force of the tape. This type of test can be conducted at room temperature or at specific temperatures and humidity to simulate different usage environments.