High production method of producing glass fiber resin composites and articles produced thereby
US4117067A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 31, 1975 |
| Grant date | Sep 26, 1978 |
| Priority date | — |
| Expiry date | Dec 31, 1995 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C2949/082
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A liquid binder forming material is added to a preform mold, dispersed chopped glass fiber strand is allowed to free fall into the preform mold to build up a layer of chopped fibers wherein substantially all of the strand is horizontal but otherwise randomly oriented, and the layer of chopped strand is forced down into the resin until completely immersed therein. Preferably, thereafter, the preforms so produced are stacked into tubular magazines with separator sheets between the preforms in each magazine; and the magazines are transported first to a maturation room where the viscosity of the binder forming material is increased to above 20 million centipoise, and then to matched metal dies where the preforms are sequentially fed out of the magazine to between the dies which shape and cure the preforms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.