Carpet etching
US4255231A · kind A · utility
11Cited by
6References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 13, 1979 |
| Grant date | Mar 10, 1981 |
| Priority date | — |
| Expiry date | Jun 13, 1999 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06Q1/06
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Multi-level nylon pile fabrics having a selectively etched surface and a process of developing an etched effect that comprises selectively applying a chemical fiber etching agent to the surface of a level pile fabric, controlling the depth of penetration into said fabric and heating in the presence of steam to a temperature of 180.degree. F.-250.degree. F. to destroy part of the pile in the treated areas and thus to reduce the height of the pile in the treated areas creating the desired multi-level effect.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.