Patent ID: 8753469
Filing Date: 2014-06-17
Classification: B29C,B29K,Y10T

Abstract:
1. A method of vacuum-assisted RTM for disposing a resin distribution medium on one surface of a reinforcing-fiber substrate comprising: covering the resin distribution medium with a bag material; reducing pressure inside said bag material; injecting a resin into said resin distribution medium to distribute said resin; and impregnating said resin into said reinforcing-fiber substrate in its thickness direction such that flow resistance of said resin distribution medium during resin distribution varies along an in-plane direction of said resin distribution medium in accordance with a difference in fiber weight per unit area or density between parts to be impregnated with resin of said reinforcing-fiber substrate present in a direction along said one surface of said reinforcing-fiber substrate, wherein a portion of the resin distribution medium higher in flowability is disposed adjacent a portion of the reinforcing-fiber substrate having a higher fiber weight per unit area or density and a portion of the resin distribution medium lower in flowability is disposed adjacent a portion of the reinforcing-fiber substrate having a lower fiber weight per unit area or density.