Vacuum infusion by means of a semi-permeable membrane
US7803302B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 30, 2005 |
| Grant date | Sep 28, 2010 |
| Priority date | — |
| Expiry date | Sep 15, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Method of producing an oblong shell member made of fiber composite material by means of vacuum infusion, where the fiber material is impregnated with liquid polymer. A mould is applied with a mould cavity, in which a fiber insertion (3) with a first lateral face (1) and a second lateral face (2) is placed, and where said fiber insertion includes a plurality of fiber layers and a distribution layer (4), said distribution layer allowing a higher rate of flow for the liquid polymer than the fiber layers. A semi-permeable membrane (5) is placed opposite the first lateral face (1) of the fiber insertion, said semi-permeable membrane being substantially permeable to gasses and substantially impermeable to liquid polymer and further communicating with a vacuum source The distribution layer (4) is placed inside the fiber insertion (3) with fiber layers on both sides and is interrupted by a zone (6) opposite the semi-permeable membrane (5) Liquid polymer is directed via inlet channels (7, 8) to the distribution layer (4), thus creating a flow front (9, 10) between the distribution layer (4) and the second lateral face (2), said flow front moving through the central zone (6) towards the semi…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.