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Membrane Switch - Overlay Materials

Liquid Crystal Technologies  offers high quality products using only the highest quality raw materials. Below is a short description of some of the materials we use, and a short commentary as to the strengths of each. If you require a raw material that is not listed,  don't worry we can probably get it for you,  just ask! We can custom color match just about any color you need, and with our color matching Spectrophotometer, you are assured a perfect match every time!


Polycarbonate  is a very durable clear material, allowing for subsurface graphics. It comes in a variety of thicknesses and textures to suit the need for flexibility and strength. Flame retardant polycarbonate is also available. Unfortunately, polycarbonate is easily ruined by exposure to chemicals. 


Pressure-Sensitive Polyester

Polyester is resistant to all environmental and most manmade elements. It comes in a variety of thicknesses, and is available in white, clear, and custom colors. Polyester is typically chosen for its resistance to chemicals, however it is softer and tends to scratch easier than polycarbonate.


EMI / RFI Shielding

  • Metalized polyester can be placed beneath the graphic layer.

  • Printed Silver Ink in either a solid or a grid can be applied to the top surface of the upper switch layer.

  • Printed Carbon Ink can also be applied to the top surface of the upper switch layer instead of silver



Clear polyester overlaminates provide UV and chemical resistance, plus weatherability to any surface. Ask us about your special requirements when ordering your custom membrane switches.



Click on the Speed Quote link on the left to request a quote for a membrane keypad.