Process for the production of a panel of composite material with stiffening strips
US6746642B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 7, 2001 |
| Grant date | Jun 8, 2004 |
| Priority date | — |
| Expiry date | Jul 15, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C70/54
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A process for the production of a panel (7) of composite material with stiffening strips (3), in which a mold (1) is draped with at least one first ply (2) of fibers pre-impregnated with resin, there is emplaced at desired positions on said ply (2) at least one stiffening strip (3), the stiffening strip (3) as well as at least a portion of the remaining surface of the first ply (2) is covered with at least one second ply (4) of fibers pre-impregnated with resin, then a bladder (6) is placed to cover the above elements, the assembly is then placed under vacuum and then in an autoclave to polymerize the resin. Before emplacement of the stiffening strip (3) and/or of the second ply (4), there is interposed at least one layer (5) of a non-adherent material between at least one portion of the surface of the stiffening strip (3) and one and/or the other of the plies (2, 4).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.