As we have introduced before, whether it is a membrane switch , membrane key pad , or membrane panel, the bottom layer is a adhesive layer. This layer of adhesive will directly contact the product. Therefore, the quality of the adhesive also determines the quality of the membrane switch, panel, and key pad , as well as the quality of the product. This shows how important a high-quality adhesive is. A high-quality adhesive needs to have a strong viscosity, so that the membrane panel switch can be attached to the product for a long time to ensure its service life . Today, we will show you the difference in viscosity between ordinary adhesive and high-quality adhesive. Let ’ s take out the membrane panel with ordinary adhesive. Peel off the release paper and then we put it on the tilt table. Take out a small steel ball and drop it from the highest point. Unfortunately, the ball failed to stop on the adhesive , but rolled dire...