We are a Membrane Switches manufacturer engaged in Graphic Overlay,Membrane Panels, Soft Circuits, Silicone Rubber Keyboard, LED , LGF Silicone Rubber Keypad. All kinds of customization, welcome to come to consult.

1. Panel layer

The panel layer is generally made of exquisite patterns and texts by silk-screening on PET, PC and other colorless light-transmitting sheets less than 0.25MM. Because the main function of the panel layer is to play the role of logo and buttons, the selected materials must have high transparency. , High ink adhesion, high elasticity, high toughness and other characteristics.

2.The surface glue layer

The main function of the surface glue is to closely connect the panel layer and the circuit layer to achieve the effect of sealing and connection. This layer generally requires a thickness between 0.05---0.15MM, with high viscosity and anti-aging properties; in production , Generally use special Membrane Switch double-sided adhesive, some membrane switches are required to be waterproof and high temperature, so the surface adhesive uses different materials according to needs.

3. The upper and lower layers of the control circuit

This layer uses polyester film (PET) with good performance as the carrier of the Switch circuit pattern, and uses a special process to Screen-print conductive silver paste and conductive carbon paste on it to make it conductive. Its thickness is generally 0.05-- Within 0.175MM, 0.125MM PET is commonly used.

4. The sandwich layer

It is located between the upper circuit and the lower circuit layer and plays the role of sealing and connecting. Generally, PET double-sided tape is used, and its thickness varies from 0.05 to 0.2MM; when selecting the material of this layer, the overall product should be fully considered. Thickness, insulation, circuit key pack feel and tightness.