High-performance infusion system for VARTM fabrication
US6964561B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 22, 2003 |
| Grant date | Nov 15, 2005 |
| Priority date | — |
| Expiry date | Apr 22, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C33/0061
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
In the field of vacuum-assist-resin-transfer-mold (VARTM) processing, a new system is provided to lower production times and to create a high permeability mold cavity with reduced directionality to yield an optimum flow-front. The system comprises the use of a high permeability layer to evacuate air from the mold cavity and may include a reusable port-runner device for introduction of resin into the fiber mat. In the preferred embodiment, the high permeability layer is a “felt-like” material constructed of synthetic fibers, and the reusable port device is a flat, modular unit. In another embodiment, the high permeability layer is a fluid-impervious material with sporadic protrusions, and the reusable port-runner device is a flexible, silicone unit. Other embodiments are comprised of any combination thereof. Each embodiment is designed to minimize set-up times and to create a mold cavity with a low resistance to fluid flow through the application of pressure differentials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.