Self-crimped foamed fibers
US4626390A · kind A · utility
19Cited by
10References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 3, 1985 |
| Grant date | Dec 2, 1986 |
| Priority date | — |
| Expiry date | Jan 3, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2377/06
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Crimped foamed fibers are produced by a process which eliminates any mechanical deformation steps. The process comprises the step of forming foamed fibers having a plurality of randomly arranged cells distributed asymetrically over a given cross section and occupying at least about 10% of the cross sectional area of the fiber, and heating the foamed fibers while maintaining the fibers under no load condition to produce a crimped foamed fiber. The crimped foamed fibers are used in apparel, carpet fibers, thermal insulation, acoustic and filtration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.