Method for making a pultruded panel
US5286320A · kind A · utility
47Cited by
8References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 18, 1991 |
| Grant date | Feb 15, 1994 |
| Priority date | — |
| Expiry date | Nov 18, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C70/523
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method for continuously manufacturing a composite sandwich structure by pultrusion through a pultrusion die comprises arranging fiber reinforcement materials on the surface of a preformed foam core, applying liquid resin to the reinforcement materials on the surface of the foam core, heating the surface region of the foam core to a temperature of at least 100.degree. C. to convert water in the foam core to steam, thereby causing water vapor pressure expansion of the foam, and using the expansion of the foam core to subject the liquid resin to increased pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.