Abstract: Provided is a spiral tube-like heater capable of accurately controlling a temperature over a wide range and reducing a problem in safety caused by the disconnection of a heating element. In a spiral tube-like heater (1) in which a first heat-resistive resin tape (4) and a second heat-resistive resin tape (6) are laminated through an adhesive layer (10) while two or more heating elements (2) extending in the longitudinal direction are interposed therebetween, the two or more heating elements (2) are disposed while being insulated from each other and are respectively and independently joined to different lead wires (8) from the outside.

Abstract: Provided are flexible heater excellent in heat resistance and in terminal strength, and a method for manufacturing same. A flexible heater 2 includes: a based member 10; a heating element circuit 12 formed on the base member 10; a heating element circuit cover member 14 which covers the heating element circuit 12; and a pair of lead wires 17 and 17 connected to a pair of connection end portions 12a and 12a of heating element circuit 12. The heating element circuit cover member 14 has opened portions 14a and 14a for not covering connection end portions 12a and 12a and their surroundings. The connection end portions 12a and 12a and their surroundings, and portions of the lead wires 17 and 17 above the base member 10 are covered through a heat-resistant adhesive 20 with an end portion cover member 22 provided separately from heating element circuit cover member 14.

Abstract: A flexible heating sheet is composed of two heat fusible aromatic polyimide films and an electric heating element having an electric source-connecting terminal at each end which intervenes between the heat fusible aromatic polyimide films, in which each heat fusible aromatic polyimide film is covered with a heat resistant aromatic polyimide film.

Abstract: A flexible heating sheet is composed of two heat fusible aromatic polyimide films and an electric heating element having an electric source-connecting terminal at each end which intervenes between the heat fusible aromatic polyimide films, in which each heat fusible aromatic polyimide film is covered with a heat resistant aromatic polyimide film.

Abstract: In a heat-resistant aromatic polyimide/metal (or metal oxide) composite sheet composed of an aromatic polyimide film and a metal or metal oxide layer arranged on the film, the polyimide film is composed of an aromatic polyimide resin and an Al-containing material dispersed in the polyimide resin in an amount of 1 to 1,000 ppm per the amount of polyimide film, and the metal or metal oxide layer is formed on the polyimide film via no adhesive.