Carbon fiber random mat and carbon fiber composite material
US11053363B2 · kind B2 · utility
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Key dates
| Filing date | Jul 12, 2017 |
| Grant date | Jul 6, 2021 |
| Priority date | — |
| Expiry date | Nov 1, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2377/06
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A random mat material including fiber bundles, said fiber bundles including fibers having an average fiber length of 5 to 100 mm, and having an average number N of fibers in the fiber bundle that satisfies: wherein D is the average diameter of fibers in the fiber bundle, expressed in micrometers, and the standard deviation SDN of the number of fibers in a fiber bundle satisfies: 1,000<SDN<6,000 wherein at an end of the fiber bundle, the number of the fibers in a fiber bundle becomes less from center to edge of the fiber bundle in a fiber direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.