membrane switch keypads embossing and tactile

Membrane keypads embossing:
Embossing can dramatically enhance the look and functionality of the overlay.
There are three basic styles of embossing, pillow, rim and dome embossing.
Depending on shape and size, logos and multi level shapes can be embossed.
There are two ways to emboss an graphic overlay. The first method is with male and female magnesium dies. This method is fine for most applications but there are height limitations: embossing height is usually 2 to 2-1/2 times the material thickness, the minimum width of a rim emboss is 0.050", the distance between embossed objects should be .100" and the minimum inside radius should be .005". Hydroforming is the second method which has more design flexibility.
Membrane switch tactile :
Tactile membrane switches incorporate a metal dome or a polydome to achieve the desired tactile response. Using different sizes of metal domes or polydomes will vary the actuation force. Metal domes come in a large variety of shapes and sizes with actuation forces between 180 to 700 grams; different polydome actuation forces can be achieved by changing the diameter and height of the polydome to meet your requirements.
Tactile and embossing are two important conditions for the interconnection of membrane switches.
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