Fibrous veil for class A sheet molding compound applications
US7498279B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 19, 2007 |
| Grant date | Mar 3, 2009 |
| Priority date | — |
| Expiry date | Aug 23, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/2992
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A conformable veil is formed by impregnating a random mat of glass fibers formed with a polystyrene-based resin. The veil is then introduced between two layers of a sheet molding compound resin paste and compacted to form a compacted sheet. The compacted sheet is then introduced to a mold and molded to form a soft, flexible sheet molding composite part having good resin and fiber distribution. Resin and fiber distribution of the present invention is improved because the polystyrene-based resin is soluble in the sheet molding compound resin paste and allows the plurality of fibers to flow freely within the resin paste during the molding process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.