Electrically conductive PTC ink with double switching temperatures and applications thereof in flexible double-switching heaters
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United States of America Patent
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Jan 26, 2021
Grant Date -
Oct 17, 2019
app pub date -
Jun 27, 2019
filing date -
Jun 12, 2014
priority date (Note) -
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Abstract
A double-switching heater includes a double-switching PTC ink deposited on a substrate to form one or more resistors. The double-switching PTC ink has a first resin that provides a first PTC effect at a first temperature range and a second resin that provides a second PTC effect at a second temperature range, where the second temperature range is higher than the first temperature range. The substrate may be a flexible substrate or a rigid substrate, and may bedeformable to generate a three-dimensional structure. The substrate may be: polyester, polyimide, polyamide, polypropylene, thermoplastic polyurethane, fiberglass, cement board, carbon composite materials, polyethylene terephthalate, polyethylene, aluminum, steel, glass composite, molded plastic, high-density polyethylene or styrene ethylene butylene styrene.
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International Classification(s)
- H01L:SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICE....
- H05B:ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE ....
- C09D:COATING COMPOSITIONS, e.g. PAINTS, VARNISHES, LACQ....
- A41D:OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- F25C:PRODUCTION, WORKING, STORING OR DISTRIBUTION OF IC....
- E04C:STRUCTURAL ELEMENTS; BUILDING MATERIALS
- H01C:RESISTORS
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