Material Specifications

Membrane Switch Material Specifications

Polyester

 
  • The material of choice for membrane keypad graphic overlays due to its superior flex life and chemical resistance
  • Most common thicknesses are .006”, .007”, .008” and .010”
  • Certain films are suitable for outdoor use with UV inhibitors for resistance to the UV effects of sunlight.
  • Available with built-in Microban antimicrobial protection that inhibits growth of bacterial, mold & mildew.
  • Also available in brushed finish to simulate the look of brushed metal
  • Special “soft touch” surface finish available to mimic the feel of silicone rubber
 

Polyester Products

 

Polycarbonate


 

  • Ideal for standalone display windows, overlays without keypads as well as bezel overlays for rubber keypads
  • Available in textured, antiglare and glossy finishes
  • Certain films are suitable for outdoor use with UV inhibitors for resistance to the UV effects of sunlight.
  • Available in an anti-fog coating
  • Available in thickness ranges from .005” to .030”
 

Polycarbonate Products

Adhesives

 

When it comes to membrane switch adhesives, 3M has always been and continues to be the top-of-the-line material manufacturer of choice. 3M adhesives can withstand the stress of keypad and membrane switch actuations and hold up in the harshest of environments. 3M adhesives are specially formulated to provide a water-tight seal and are able to resist moisture, extreme temperatures, UV radiation and solvents. The adhesives offer unmatched and exceptional cohesive strength.

3M 200MP High Performance Adhesives

  • Suitable for high surface energy materials such as aluminum, steel, polycarbonate, ABS, nylon, etc.
  • Widely used in the membrane switch applications
  • Available in thicknesses of .002” and .005”. For adhesion to textured surfaces, the .005” thickness is recommended.
  • Service temperature range of -31°F to +300°F for prolonged periods and +400°F for shorter periods.
  • Excellent environmental, temperature, chemical and humidity resistance.
 

3M 300LSE High Strength Adhesives

  • Ideal for adhesion to low surface energy plastics such as powder coated paint and polypropylene
  • Available in thicknesses of .002”, .0035”, and .005”. For adhesion to textured surfaces, the .005” thickness is recommended.
  • Service temperature range of -40°F to +200°F for prolonged periods and +300°F for shorter periods.
  • Excellent environmental, temperature, chemical and humidity resistance.

Membrane Switch Components

 

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