Patent ID: 9227386
Filing Date: 2016-01-05
CPC Classification: B29C,B29K,B32B

Claim Text:
1. A method for manufacturing a resin-based composite material, comprising: a prepreg stacking stage in which prepregs made of fiber-reinforced resin are stacked on a jig of a predetermined shape until the prepregs have a predetermined thickness; a first semi-molded article formation stage in which the stacked prepregs and the jig are covered with a first bagging material and the first bagging material is heat-treated under pressure until a temperature is increased to a range where the resin can flow to form a first semi-molded article; a second semi-molded article formation stage in which prepregs made of fiber-reinforced resin are stacked on another jig of a predetermined shape until the prepregs have a predetermined thickness, the stacked prepregs and the another jig are covered with another bagging material separately from the first semi-molded article, and the another bagging material is heat-treated under pressure until a temperature is increased within a range where the resin can flow to form a second semi-molded article by performing the same steps as the first semi-molded article formation stage; a board thickness measurement stage in which a board thickness of the first semi-molded article and a board thickness of the second semi-molded article are measured; a number of additional plies determination stage in which the number of additional plies is determined based on the measured board thickness of the first semi-molded article the measured board thickness of the second semi-molded article, a desired board thickness of the resin-based composite material, and physical properties of the additional plies; and a bonding stage in which a layered product is formed by stacking the determined number of additional plies between the first semi-molded article and the second semi-molded article which are placed on the jig of the predetermined shape and the another ii˜ of the predetermined shape, respectively, the layered product and the jig are covered with a second bagging material, and temperature to bond the first semi-molded article, the second semi-molded article, and the additional plies between the first semi-molded article and the second semi-molded article.