Resin infusion mold tool system and vacuum assisted resin transfer molding with subsequent pressure bleed
US6840750B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 11, 2001 |
| Grant date | Jan 11, 2005 |
| Priority date | — |
| Expiry date | Apr 25, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C70/48
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A resin infusion mold tool system for use in a vacuum assisted resin transfer molding process with a subsequent pressure bleed step. The mold tool system includes a mold assembly having an outer mold line tool connected to resin supply lines and supplying resin to the preform. A plurality of inner mold line tools form a hard interface with the inner mold line of the fiber preform and are held to within tight tolerances by an external locating fixture. Excess resin is drawn out of the fiber preform using a vacuum bag connected to vacuum lines and disposed over the inner mold line tools but not between the tools and the fiber preform. The mold assembly is placed in an autoclave, the resin supply lines are detached and the autoclave pressurized to bleed additional resin out of the preform to raise the fiber volume of the composite structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.