Ammonia processing of fabrics
US4152907A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 6, 1978 |
| Grant date | May 8, 1979 |
| Priority date | — |
| Expiry date | Mar 6, 1998 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06M2101/06
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The disclosure relates to equipment and techniques for the removal from fabrics of excess residual ammonia, remaining in the fabric after liquid ammonia processing. The process involves contacting the opposed surfaces of the fabric with a thin film of water, followed by removal of the water from the fabric. The amount of water which contacts the fabric is insufficient to wet the fabric, so that it does not require a subsequent drying step, but is sufficient to release most of the residual ammonia, causing the ammonia to be extracted from the fabric. To advantage, the thin film of water is achieved by condensation of steam on chilled rollers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.