This supplier of metal tactile domes and dome arrays developed a procedure for “stacking” metal domes supplied on adhesive tape (Peel-N-Place arrays). Stacking domes gives design engineers the ability to double the actuation force of any of the supplier’s 4-leg domes, sizes 7 mm to 20 mm. Actuation forces in excess of 4,000 g can now be achieved on standard and custom dome arrays with adhesive.
Typically, the life of a dome diminishes as the actuation force increases in relation to the size of dome. As a result, design engineers have often had to sacrifice actuation force in order to achieve desired life. Stacking domes allows higher forces to be achieved with little or no impact on life. Snaptron, Inc., www.snaptron.com