Our film heater is made from etched foil element as its middle layer and polyimide film(kapton? Film) or polyester thin films as its insulated surfaces. The film heaters are able to operate at very high watt densities, this is due to the large surface area covered by the foil circuit. The flat foil circuit also gives excellent uniformity and faster heat transfer resulting in longer heater life in high power applications. Also the excellent circuit pattern allows the design of complex heat distribution patterns and an exceptionally uniform heat output with different watt densities within the heater area.
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