Patent ID: 9604415
Date: 2017-03-28
CPC Classifications: B29C,B29K,B29L

Claim:
1. A method of producing FRP comprising disposing a preform made of a reinforcing fiber base material in a cavity of a mold, providing a resin injection path and a suction path that sucks at least air to said mold, and causing resin from said resin injection path to flow in a direction toward said suction path in said cavity to be impregnated into said preform, wherein 1) a high flow resistance region that partially causes said resin flowing in said preform to hardly flow is formed in said preform itself, 2) a flow front of said resin flowing in said direction toward said suction path through said high flow resistance region is controlled to settle within a permitted region that has been predetermined relative to a shape of a product to be molded, 3) said resin injection path is formed from a plurality of opened resin injection ports facing one surface of said preform disposed in said cavity, and 4) said high flow resistance region is formed such that resin flowing in said preform from an inside part of said preform toward an outer circumference part of said preform hardly flows along said outer circumference part of said preform and is located at a position outwardly of a product to be molded relative to an outline of said product to be molded.