Circuit layer assembled with 3M adhesive | Durable Keypads for Any Environment - Manufacturer Direct | YiYi Enterprise Co., Ltd

Circuit layer assembled with 3M adhesive has 4 or more layers. The top layer of membrane switch is the graphic interface between the user and the machine. The another critical layer is a printed circuit. This can also be a flex circuit made of copper and polyimide material. The layers normally assembled using pressure-sensitive adhesives although inexpensive designs can be held together by other mechanical means such as a keyboard housing. Contact between two traces can be made through a printed shorting pad or through a metal dome that stands on legs. YI YI is high-quality Circuit layer assembled with 3M adhesive, Membrane switch. Waterproof keyboard, Waterproof keypad, waterproof membrane switch manufacturer from Taiwan since 1974. With 50 years experience for producing Membrane Switch and FPC. 80% exportation to US, Europe, Australia, New Zealand, and Russia. The main products are membrane keyboard switches, flexible printed circuits, rigid-flex boards, EL panels, and silicon rubber keypads and name plates.