Method and machine for producing multiaxial fibrous webs
US6919118B2 · kind B2 · utility
7Cited by
10References
23Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Dec 27, 2002 |
| Grant date | Jul 19, 2005 |
| Priority date | — |
| Expiry date | Feb 12, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/298
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A plurality of unidirectional sheets (30a, 30b, 30c) are superposed in different directions and they are bonded together. At least one of the unidirectional sheets is made by spreading a tow so as to obtain uniform thickness, width not less than 5 cm, and a weight of no more than 300 g/m2, cohesion being imparted to the sheet so as to enable it to be handled prior to being superposed with other sheets. Advantageously, the unidirectional sheets are made of carbon fibers and are obtained by spreading out large tows.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.