Twin chopper device for spray-up molding
US6126092A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 4, 1999 |
| Grant date | Oct 3, 2000 |
| Priority date | — |
| Expiry date | Jun 4, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S239/08
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The twin chopper of the present invention consists of a pair of roving choppers, each chopper being disposed on either side of a resin spraying nozzle. Each chopper comprises a rotatably driven cutter roller, a rotatable friction roller cooperating with the cutter roller, and an idler roller cooperating with the friction roller for feeding roving strands between the friction roller and the cutter roller. The outlet of the first chopper is so disposed relative to the nozzle as to discharge cut rovings over and onto the flat spray of resin while the outlet of the second chopper is so disposed relative to the nozzle as to discharge cut rovings under and onto the flat spray so that the resin spray is coated with roving cuts on both sides thereof from both choppers as the spray is directed onto the open mold surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.