Flexible heating sheet
First Claim
1. A flexible heating sheet comprising an electric heating circuit element having an electric source-connecting terminal at each end thereof, and two aromatic polyimide sheets each comprising a heat fusible aromatic polyimide film and a heat resistant aromatic polyimide film attached to the heat fusible aromatic polyimide film, in which the two aromatic polyimide sheets are arranged opposite to each other under such condition that one heat fusible aromatic polyimide film is brought into contact with another heat fusible aromatic polyimide film, and in which the electric heating circuit element is airtightly sealed between the two heat fusible aromatic polyimide films under such condition that each electric source-connecting terminal of the electric heating circuit element is exposed from the aromatic polyimide sheets.
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Accused Products
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.
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Citations
18 Claims
- 1. A flexible heating sheet comprising an electric heating circuit element having an electric source-connecting terminal at each end thereof, and two aromatic polyimide sheets each comprising a heat fusible aromatic polyimide film and a heat resistant aromatic polyimide film attached to the heat fusible aromatic polyimide film, in which the two aromatic polyimide sheets are arranged opposite to each other under such condition that one heat fusible aromatic polyimide film is brought into contact with another heat fusible aromatic polyimide film, and in which the electric heating circuit element is airtightly sealed between the two heat fusible aromatic polyimide films under such condition that each electric source-connecting terminal of the electric heating circuit element is exposed from the aromatic polyimide sheets.
- 11. A flexible heating sheet comprising an electric heating circuit element having an electric source-connecting terminal at each end thereof, and two heat fusible aromatic polyimide films, in which the two heat fusible aromatic polyimide films are arranged opposite to each other, and in which the electric heating circuit element is airtightly sealed between the two heat fusible aromatic polyimide films under such condition that each electric source-connecting terminal of the electric heating circuit element is exposed from the heat fusible aromatic polyimide films, at least one heat fusible aromatic polyimide film being covered with a heat resistant foamed polymer film.
Specification