Prepreg base material, layered base material, fiber-reinforced plastic, process for producing prepreg base material, and process for producing fiber-reinforced plastic
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United States of America Patent
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Jun 24, 2014
Grant Date -
Apr 18, 2013
app pub date -
Dec 7, 2012
filing date -
Feb 2, 2007
priority date (Note) -
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Abstract
A laminated base material includes a lamination and integration of prepreg base materials each of which includes many reinforcing fibers arranged substantially in one direction and a matrix resin adhered to the reinforcing fibers, wherein at least one of the laminated prepreg base materials is formed with a prepreg base material having, throughout its whole surface, many incisions each extending in a direction crossing the reinforcing fibers, substantially all of the reinforcing fibers divided by incisions, and wherein a length L of each of reinforcing fiber segments formed by the incisions is 10 to 100 mm, a thickness H of the prepreg base material is 30 to 300 μm, and a fiber volume content Vf of the reinforcing fibers is 45 to 65% and arranging directions of the reinforcing fibers between one and another laminated prepreg base materials have at least two directions different each other.
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