Thermal insulation material comprising a mixture of silk and synthetic fiber staple
US4400426A · kind A · utility
7Cited by
9References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 3, 1981 |
| Grant date | Aug 23, 1983 |
| Priority date | — |
| Expiry date | Nov 3, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/2762
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An improved thermal insulation material comprising a carded web containing 30 to 80 wt. %, preferably 50 wt. % silk, the balance being crimped, hollow polyester staple or very low denier solid cross section polyester filaments. The carded web is uniformly impregnated with a thermosetting resin to form a bat which is employed as a filler for garments, sleeping bags and the like.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.