Conveyor belt carcass containing one or more impregnated non-woven fabric layers
US12384629B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 10, 2019 |
| Grant date | Aug 12, 2025 |
| Priority date | — |
| Expiry date | Feb 21, 2041 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2433/04
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A belt carcass (1) comprising one, two, or more than two impregnated layers (21, 22, 23, 24, 25); characterised in that i) each impregnated layer (21, 22, 23, 24, 25) comprises, or consists essentially of, a non-woven fabric (3, 301, 302, 303, 304, 305, 306, 307, 308) and an impregnation material (4, 401, 402, 403, 404, 405, 406, 407, 408) comprising, or consisting essentially of, a first thermoplastic, first thermoplastic elastomer, first elastomer or first thermoset and optional additives; whereby, if there are two or more such impregnated layers (21, 22, 23, 24, 25), they are adjacent to each other, ii) if the belt carcass (1) comprises one or more such impregnated layers (21, 22, 23, 24, 25), then reinforcing filaments extending at least in part in one given direction and being in the form of one filament layer (51) are embedded in the non-woven fabric (3) of exactly one of said impregnated layers (21); or if the belt carcass (1) comprises two or more such impregnated layers (21, 22, 23, 24, 25), then reinforcing filaments extending at least in part in one given direction and being in the form of one filament layer (52,53) are sandwiched between two adjacent such impregnated la…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.