Random mat, shaped product of fiber reinforced composite material, and carbon fiber mat
US9909253B2 · kind B2 · utility
2Cited by
1References
11Claims
0Family size
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Key dates
| Filing date | Jun 25, 2014 |
| Grant date | Mar 6, 2018 |
| Priority date | — |
| Expiry date | Nov 7, 2034 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06M2101/40
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
There is provided a random mat including carbon fibers having an average fiber length of from 3 mm to 100 mm and a thermoplastic resin, wherein a fiber areal weight of the carbon fibers is from 25 to 10,000 g/m2, a proportion of carbon fiber bundles (A) constituted by single carbon filaments of a critical single fiber number or more defined by the formula (1) to the total amount of fibers in the random mat is from 40 to 99 Vol %, and an average number (N) of fibers in the carbon fiber bundles (A) satisfies the formula (2):critical single fiber number=600/D (1)2.0×105/D2≦N<8.0×105/D2 (2)
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.