Methods of bleaching jeans
US5298027A · kind A · utility
1Cited by
2References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 4, 1988 |
| Grant date | Mar 29, 1994 |
| Priority date | — |
| Expiry date | Feb 4, 2008 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06P5/158
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Jeans are bleached by rotating glass-expandable ceramics having a bulk specific gravity of 0.7 to 1.2, a 24 hour water absorption of not greater than 5% and the maximum diameter of not greater than 150 mm, water and jeans in a rotary tank. Further jeans are bleached by rotating an air-permeable ceramic porous material having a bulk specific gravity of 0.7 to 1.9, a 24 hour water absorption of 10 to 40% and the maximum diameter of not greater than 150 mm, water and jeans in a rotary tank. In this case, the air-permeable ceramic porous material may also be immersed in a bleaching agent solution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.