Method for impregnating a fibrous material in an interpenetrated fluidized bed
US11364660B2 · kind B2 · utility
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26Claims
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Key dates
| Filing date | Nov 25, 2019 |
| Grant date | Jun 21, 2022 |
| Priority date | — |
| Expiry date | Nov 25, 2039 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29K2105/10
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Manufacture of a pre-impregnated fibrous material which contains continuous fibers and a thermoplastic matrix, the material being made as a plurality of unidirectional parallel ribbons or sheets, and the method involving a step of pre-impregnating, in dry conditions, N parallel strands divided into X groups of Ni strands, by the thermoplastic matrix in powder form in a tank, ΣNi=N et X 3, one thereof from each series being immersed in the powder, each group of strands running on the same number Y of tensioning parts, and the parallel strands being separated by a spacing at least equal to the width of each strand.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.