PLANAR HEATING ELEMENT AND WARM AIR SUPPLY DEVICE

To provide a planar heating element that can be heated uniformly across a plane by reducing warpage of the planar heating element whose insulating base material, insulating layer, and insulating protective layer are configured by polyimide.SOLUTION: The planar heating element includes a base materia...

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Bibliographic Details
Main Authors TSUDA KENTO, BAMISHIN MASAHITO, ABE KEISUKE
Format Patent
LanguageEnglish
Japanese
Published 11.04.2024
Subjects
ELECTRIC HEATING
ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
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Summary:To provide a planar heating element that can be heated uniformly across a plane by reducing warpage of the planar heating element whose insulating base material, insulating layer, and insulating protective layer are configured by polyimide.SOLUTION: The planar heating element includes a base material, a heating layer provided on the base material, an electrode provided in contact with the heating layer, and a protective layer covering at least a portion of each of the electrode and the heating layer. The base material and the protective layer are made of polyimide. The imidization rate of the polyimide in the protective layer is smaller than the imidization rate of the polyimide in the base material.SELECTED DRAWING: Figure 3 【課題】絶縁性基材、発熱層、絶縁性保護層がポリイミドによって構成された面状発熱体の反りを低減し、面内を均一に加熱できる面状発熱体を提供する。【解決手段】基材と、基材上に設けられた発熱層と、発熱層と接して設けられた電極と、電極及び前記発熱層それぞれの少なくとも一部を覆う保護層と、を備えた面状発熱体であって、基材と前記保護層はポリイミドからなり、保護層のポリイミドのイミド化率が基材のポリイミドのイミド化率よりも小さい面状発熱体を提供する。【選択図】図３
Bibliography:Application Number: JP20220158808