Fiber-reinforced plastic panel material
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United States of America Patent
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Jan 24, 2023
Grant Date -
Jul 8, 2021
app pub date -
May 17, 2018
filing date -
May 17, 2018
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Abstract
An FRP panel material includes reinforcing fibers oriented in predetermined orientation directions near the surface. In the surface of the panel material, a plurality of either or both of protrusions and depressions having shapes of congruent regular triangular pyramids are provided. The bases of the regular triangular pyramids are arranged on a virtual reference plane along the surface with no gap or overlap so that each vertex of an equilateral triangle constituting each base is shared by six of the bases as vertices thereof. Each of the orientation directions of the reinforcing fibers is parallel to any lateral edge of each regular triangular pyramid as seen in the thickness direction of the panel material.
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