Thermal insulation sheet and manufacturing method therefor
US11788227B2 · kind B2 · utility
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4Claims
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Key dates
| Filing date | Jan 11, 2021 |
| Grant date | Oct 17, 2023 |
| Priority date | — |
| Expiry date | Jun 23, 2042 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06M2400/02
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A thermal insulation sheet is used that includes a fiber, a silica aerogel contained in the fiber, and a fibrous cavity. A method for manufacturing a thermal insulation sheet is used that includes: an impregnation step of impregnating a silica aerosol in a nonwoven fabric substrate containing a fiber that is insoluble in an acidic solution, and a fiber that is soluble in the acidic solution; a gelling step of gelling the silica aerosol; a hydrophobizing step of hydrophobizing the gel; and a drying step of drying the gel. The fiber that is soluble in the acidic solution is dissolved in the hydrophobizing step.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.