In membrane keypad construction there is a layer called tactile layer, snap dome is applied for this layer.
For the tactile layer, there are several ways to create a tactile response which is a result of forming another layer. For example a dome embossed polyester overlay means the graphic layer is also the tactile layer. If a poly dome is formed in the membrane layer means it doubles as the tactile layer. Obviously if the tactile layer is absent, you have a non-tactile membrane switch. Options for Tactile Layers are Snap Dome, Polyester Dome, Dome Emboss in the Graphic Layer, Elastomer. But most for the tactile layer is the metal domes(snap domes).
If you need the tactile snap dome for your membrane keypad, please do feel free to contact us.
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