Process for producing dried, singulated fibers using steam and heated air
US7334347B2 · kind B2 · utility
20Cited by
77References
8Claims
0Family size
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Key dates
| Filing date | Aug 20, 2004 |
| Grant date | Feb 26, 2008 |
| Priority date | — |
| Expiry date | Jul 30, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/91
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Dried, singulated cellulose pulp fiber is produced by introducing wet pulp steam and air into a jet dryer. The air is heated to a temperature of 250° C. to 600° C. Steam is injected at a nozzle pressure of from 344 KPa (50 psig) to 4,137 KPa (600 psig). The pulp is removed from the jet dryer and separated from the air. The product formed has advantageous properties such as low fines count, improved kink curl and twist, and high permeability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.