Method for production of fiber-reinforced thermosetting resin molding material
US4973440A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 15, 1989 |
| Grant date | Nov 27, 1990 |
| Priority date | — |
| Expiry date | Mar 15, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C70/508
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method for the production of a fiber-reinforced molding material of thermosetting resin, which method comprises supplying a liquid thermosetting resin composition to at least one spreading roller disposed as separated by a gap of not more than 5 mm from the terminal of a supply unit, rotated at speed in the range of 1,000 to 7,000 r.p.m., and provided on the circumferential source thereof with at least one ridge or groove formed parallelly to the rotary axis thereof, thereby causing the liquid thermosetting resin composition to be spread out in the form of particles, allowing said particles to be mixed with separately spread reinforcing fibers, piling the resultant mixture, and then deaerating the piled mixture thereby causing the reinforcing fibers in the piled mixture to be impregnated with the resin composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.