Glass roving cloth and glass-fiber-reinforced resin sheet
US11702773B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 17, 2020 |
| Grant date | Jul 18, 2023 |
| Priority date | — |
| Expiry date | Sep 1, 2040 |
Classification
- Technology area (CPC —)General
Abstract
The glass roving cloth includes glass rovings each composed of glass filaments, each having a filament diameter Dt of 9.5 to 30.0 μm, bundled in a number bundled Ft of 400 to 8000 as a warp yarn and glass rovings each composed of glass filaments, each having a filament diameter Dy of 9.5 to 30.0 μm, bundled in a number bundled Fy of 400 to 8000 as weft yarns, wherein the weaving density of the warp yarns and weft yarn is 2.0 to 14.0 yarns/25 mm, the average yarn width of the warp yarn and the weft yarn are each 500 to 8000 μm, the widening rate of the warp yarn and the weft yarn are each 3.0 to 30.0%, the glass occupancy in the warp yarn direction is 90.0 to 106.0%, and the glass occupancy in the weft yarn direction is 75.0 to 99.0%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.