Method for production of carbon fiber bundle
US9890481B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 22, 2013 |
| Grant date | Feb 13, 2018 |
| Priority date | — |
| Expiry date | Mar 11, 2034 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06M10/025
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The purpose of the present invention is to provide a method whereby deposits which have occurred on the surfaces of a fiber bundle during flameproofing treatment of a carbon fiber-precursor acrylic fiber bundle can be efficiently removed prior to carbonization treatment at high temperature. The method for production of carbon fiber bundle includes a step in which, after a carbon fiber-precursor acrylic fiber bundle has been heated and undergone flameproofing treatment, the fiber bundle is subjected to a plasma treatment involving contact with a plasma gas in gas phase, or to an ultraviolet treatment involving irradiation with ultraviolet in gas phase; and a step in which the fiber bundle having undergone the plasma treatment or the ultraviolet treatment is subjected to a carbonization treatment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.