Silicone Rubber Heaters
Sandwiched between layers of silicone rubber are uniformly spiraled (stranded) resistance wire web that covers the entire surface or an etched foil. The layers are then bonded together through heat and pressure. The wire wound design allows for up to 10 watts per square inch, while with the etched foil design up to 20 watts per square inch can be achieved. Silicone rubber heaters are used up to 400 deg F.
Application
This sandwiched construction makes silicone rubber heaters an ideal solution to the requirements of many low and medium temperature applications, which do not conform to the standard shapes, sizes and dimensions of band, strip, cartridge, tubular and coil heaters.
When silicone rubber heaters are made with a pressure sensitive adhesive backing, a thin layer of aluminum is added prior to the adhesive layer, in order to improve heat transfer and maintain its uniformity. The watt density of the heater should not pass 7 WSI when a PSA is used.
Application examples:
- Drum & Tank Heaters
- Preheat molds for carbon fiber
- Moisture protection in electronics
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