Vibration assisted processing of viscous thermoplastics
US6592799B1 · kind B1 · utility
11Cited by
32References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 9, 1996 |
| Grant date | Jul 15, 2003 |
| Priority date | — |
| Expiry date | Mar 22, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C2791/008
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Cure and consolidation of a viscous thermoplastic resin, especially one that softens and melts at a high temperature, is improved by assisting autoclave pressurized momentum transport for compaction of the composite using high frequency, low amplitude acoustic vibration within the resin. The vibration induces shear thinning in the resin which promotes resin flow, achieves filling or collapse of voids, and assists consolidation of the composite preform.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.