Semi-preg material with a property-enhancing surface film for improved properties
US9682498B2 · kind B2 · utility
0Cited by
4References
20Claims
0Family size
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Inventor
Key dates
| Filing date | Sep 24, 2009 |
| Grant date | Jun 20, 2017 |
| Priority date | — |
| Expiry date | May 9, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/27
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Semi-preg material is disclosed adapted for use in composite material comprising a) a first resin layer, b) covered on both side by layers of fibrous reinforcements whereby c) one of the two fabric layers is coated with a second resin layer and d) wherein said second resin layer has a tack level of not more than 100 N. Such semi-preg material has improved handling properties and contributes to the superior mechanical properties of the composite material formed therewith.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.