Fibers and webs capable of high speed solid state deformation
US6770356B2 · kind B2 · utility
81Cited by
22References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 7, 2002 |
| Grant date | Aug 3, 2004 |
| Priority date | — |
| Expiry date | Nov 29, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31909
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The present invention relates to an intermediate web comprising of high glass transition polymer fibers. The fibers are spun at low to moderate speeds and have a relative crystallinity of from 10% to 75% of the maximum achievable crystallinity. The intermediate web is a low crystallinity web that exhibits shrinkage of more than 30% and elongation to break of more than 80% at high strain rates. This web can be heat treated to reduce shrinkage to less than 15% while the web is capable of at least about 60% elongation at a strain rate of at least about 50 second−1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.