Each layer of an HMI assembly is typically created in sheet form and then cut down to be assembled. Certain criteria is used to determine whether the materials are cut on the laser or the die cut machine.
A die cut uses extremely sharp razors (aka steel rule) to cut the material into the desired shape. You may have seen, or even used one on a smaller scale for punching out shapes of paper for scrap booking. A laser cutting machine uses an industrial strength laser to cut the material, with the help of a computer to direct it where to move and cut. Check out this video for a glimpse of how each machine operates.
What criteria is used to determine if the materials for the membrane switch or touch sensor assembly should be cut using a laser or die cut machine?
Fun facts:
– The laser is also very accurate, however, it is also more susceptible to material variations (chemistry, thickness, hardness, etc…).
– A die can last +10,000 impressions before sharpening if properly designed and operated.
