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Title:
CORD-SHAPED HEATER AND PLANAR HEATER
Document Type and Number:
WIPO Patent Application WO/2023/162409
Kind Code:
A1
Abstract:
Provided are: a cord-shaped heater having improved terminal workability; and a planar heater using the cord-shaped heater. A cord-shaped heater (10) comprises one or a plurality of conductor wires (5a), each of which is covered by an insulating coating (5b). The insulating coating (5b) comprises at least an inner layer formed on the conductor wire (5a) and an outer layer formed on the outer side of the inner layer. The thermal decomposition temperature of a material that forms the inner layer is lower than the lower of the melting point and the thermal decomposition temperature of a material that forms the outer layer. The thickness of the inner layer is at least 2 μm and is either 5 μm or less or less than two-thirds of the total thickness of the insulating coating (5b). The thickness of the outer layer is at least 1 μm and is either 5 μm or less or less than three-fourths of the total thickness of the insulating coating (5b). In this cord-shaped heater (10), the material that forms the inner layer is a polyurethane resin, and the material that forms the outer layer is a polyamide–imide resin. This planar heater is constituted by disposing the cord-shaped heater on a substrate.

Inventors:
OBA MOTOYUKI (JP)
OTA TOMOYA (JP)
MORI MOTOHIRO (JP)
Application Number:
PCT/JP2022/045613
Publication Date:
August 31, 2023
Filing Date:
December 12, 2022
Export Citation:
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Assignee:
KURABE IND CO LTD (JP)
International Classes:
H05B3/10; H05B3/20; H05B3/56
Domestic Patent References:
WO2022054701A12022-03-17
WO2011001953A12011-01-06
Foreign References:
JP2007134083A2007-05-31
JP2006164985A2006-06-22
JP2018032486A2018-03-01
JP2014209444A2014-11-06
JP2020119724A2020-08-06
JP2004055179A2004-02-19
JP2003174952A2003-06-24
JPS6147087A1986-03-07
JP2008311111A2008-12-25
JP2010015691A2010-01-21
Attorney, Agent or Firm:
YOKOI Toshiyuki (JP)
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