Process for electrostatic impregnation of a powder into a network
US6733845B1 · kind B1 · utility
16Cited by
7References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 2, 2000 |
| Grant date | May 11, 2004 |
| Priority date | — |
| Expiry date | May 2, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29B11/16
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The invention concerns an impregnation method for producing in particular a composite material comprising a fiber or filament array and a continuous matrix, rigid or flexible, with which said array is in close contact. The method is characterized in that said matrix is incorporated in said array in powder form before being transformed to constitute the continuous matrix. It consists in placing the powder and said fiber or filament in an electrostatic field with an alternating current voltage of at least 20 kV for at least 5 s.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.