Process for disperse dyeing dry-spun atactic polyvinyl chloride-based filaments and fibres after drawing the wet tow
US4681595A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 25, 1986 |
| Grant date | Jul 21, 1987 |
| Priority date | — |
| Expiry date | Mar 25, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S8/928
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The present invention relates to a process for continuous dyeing of filaments based on atactic polyvinyl chloride in the course of production. It comprises, in succession, the phases of drawing, impregnation of the filaments by padding while, at the time of the impregnation, the filaments have a density of between 1.3 and 1.4 g/cm.sup.3 (the filament roving having a water content of 10 to 30% by weight), of stabilization under tension in the presence of steam under pressure at a temperature between 100.degree. and 130.degree. C. for 2 to 20 seconds, and then oiling and shrinking in a known manner. Dyeing carried out in this manner is quick and makes it possible to produce colors having good fastness.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.