Method and apparatus for condensing and continuously treating staple length fibrous materials
US4472850A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 21, 1982 |
| Grant date | Sep 25, 1984 |
| Priority date | — |
| Expiry date | Jun 21, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S68/901
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Method and apparatus for continuously treating staple length fibrous materials by applying a liquid dye or other chemical to the fibrous materials, conveying the liquid impregnated materials into and through an elongate heating tube under compression to react or fix the dye or chemical in the fibers, and collecting the fibers; and wherein the continuously moving loose fibers are condensed into a fibrous web before passage through the liquid dye or chemical applicator to provide sufficient cohesive integrity to the web so that it can be passed into and through the liquid dye or chemical, and the driven nip rollers of the dye applicator without parting.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.