Unidirectional fiber sheet for reinforcing concrete beams and methods of preparing the same
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United States of America Patent
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May 29, 2001
Grant Date -
N/A
app pub date -
Jul 25, 1997
filing date -
Jul 2, 1997
priority date (Note) -
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status (Latency Note)
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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.
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