Method for heating crimped fibers and product thereof
US5187845A · kind A · utility
7Cited by
13References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 11, 1991 |
| Grant date | Feb 23, 1993 |
| Priority date | — |
| Expiry date | Apr 11, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2976
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of producing crimped tow by continuously feeding a tow against an adjustable counter pressure means; the tow is maintained at an average predetermined thickness and steam enters the chamber and is exhausted from the chamber in a manner to provide uniform heating of the tow to provide a fiber that is uniformly annealed as determined by measuring light reflectance for yarn dyed with a structural sensitive Milling Blue "B" dye or shrinkage uniformity determined by thermal analysis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.