Unidirectional fiber sheet for reinforcing concrete beams and methods of preparing the same
US6238761A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 25, 1997 |
| Grant date | May 29, 2001 |
| Priority date | — |
| Expiry date | Jul 25, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/3187
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Disclosed is a unidirectional fiber sheet comprising an arranged fiber layer, a multi axial scrim, and a release paper having 3 to 80% of its surface area coated with an adhesive. The adhesive is applied to the release paper in the form of stripes which may be positioned parallel, perpendicular or oblique to the filaments of the arranged fiber layer. The unidirectional fiber sheet according to the present invention is prepared by partially coating a release paper with an adhesive, and heat-pressing together an arranged fiber layer prepared from filament tows, a multi axial scrim having a net structure to support the arranged fiber layer, and the release paper so as to bind the three together.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.