Process for the chemical treatment of textile goods
Abstract
Abstract A PROCESS FOR THE CHEMICAL TREATMENT OF TEXTILE GOODS, E.G. THE DYEING, DRESSING OR FINISHING OF TEXTILE FIBERS, YARN, THREAD OR FABRIC, WHEREIN THE CHEMICAL-TREATMENT AGENT IS SLIGHTLY SOLUBLE IN AN ORGANIC SOLVENT, ESPECIALLY PERCHLORETHYLENE AND TRICHLOROETHYLENE. THE SLIGHTLY SOLUBLE CHEMICAL-TREATMENT AGENT IS INTRODUCED INTO A CIRCULATING STREAM OF THE SOLVENT TOGETHER WITH A FILTER-AID POWDER WHICH IS COLLECTED TOGETHER WITH PARTICLES OF THE AGENT UPON A POROUS WALL BEFORE THE LIQUID REACHED THE TEXTILE GOODS. AS THE CHEMICAL AGENT IS DEPLETED FROM THE LIQUID CONTACTING THE GOODS, ITS RECYCLING THROUGH THE LAYER OF TREATMENT AGENT ADSORBED UPON THE FILTER POWDER RELEASE ADDITIONAL TREATMENT AGENT TO THE SOLVENT BY DISSOLVING THEREIN. CON- SEQUENTLY, UNDISSOLVED PARTICLES OF THE TREATMENT AGENT CANNOT ACCUMULATE ON THE FIBER OF OTHER TEXTILE GOODS TO CAUSE BLOTCHING OR IRREGULAR TREATMENT.
Inventors
- 👤 Johannes Helmut Sieber
Bibliographic Details
Claims Analysis
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-31 | 1976-05-01 | 1976-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-31 | 1980-05-01 | 1980-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-31 | 1984-05-01 | 1984-10-31 | $7700.00 | Window Closed / Lapsed |