Process for producing chopped carbon fibers
US6444187B1 · kind B1 · utility
16Cited by
6References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 21, 2000 |
| Grant date | Sep 3, 2002 |
| Priority date | — |
| Expiry date | Mar 21, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2962
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Applying a sizing agent as a water dispersed sizing agent to a continuous carbon fiber bundle consisting of 20,000 to 150,000 filaments, controlling the packing density in a range of 5,000 to 20,000 D/mm, cutting the carbon fiber bundle in a wet state of 10 to 35 wt % in solution content at the time of cutting, and drying with vibration at a solution content of 15 to 45 wt % before drying.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.