Center shaft dye injection apparatus
US5187955A · kind A · utility
3Cited by
4References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 20, 1991 |
| Grant date | Feb 23, 1993 |
| Priority date | — |
| Expiry date | Sep 20, 2011 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06B5/26
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An improved apparatus and method for dyeing materials in a wet process dye extractor is shown in which the dyeing material is injected into a vessel containing a rotating perforated basket both through the center shaft of the rotating basket and also at a rear entry port in the vessel. The dual injection of dye material speeds up and improves the process of dyeing and allows dyeing from the "inside-out" as well as the "outside-in".
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.