Process for continuous heat-setting and shrinking of synthetic fibers
US3965511A · kind A · utility
11Cited by
5References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 11, 1973 |
| Grant date | Jun 29, 1976 |
| Priority date | — |
| Expiry date | Apr 11, 1993 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S68/903
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process for the continuous heat-setting and shrinking of synthetic fibers in the form of yarns with a given twist and/or in the form of tows with a forced crimp by means of a heated fluid medium with temperatures between 100.degree. and 220.degree.C, characterized in that the fibers are treated in a two-step continuous process, first at temperatures below 100.degree.C in water or saturated steam temperatures, or slightly superheated steam, respectively, and subsequently with air, superheated steam or a superheated steam-air mixture at high temperature conditions between 150.degree. and 220.degree. C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.