JP2007062150A5 - - Google Patents

Claims (6)

  A reinforcing fiber preform including a main body layer of reinforcing fibers disposed in a hollow core and a design layer covering the surface of the main body layer, wherein the design layer corresponds to each mold of a two or more molds A reinforcing fiber preform comprising two or more regions, wherein a boundary portion between the regions is provided in a corresponding parting portion.   The reinforcing fiber preform according to claim 1, wherein a seam of the design layer between the regions protrudes so as to be sandwiched between parting portions of the mold. Reinforcing fibers preform according to claim 1 or 2, wherein the in Kuchuko is blow molded article.   A reinforcing fiber preform including a reinforcing fiber main body layer disposed in a hollow core and a design layer including two or more regions corresponding to each mold of the two or more molds covering the surface of the main body layer. The design layer is placed on the mold so that the boundary between the regions of the design layer is clamped by the parting part of the mold, and the resin is applied at the same or low pressure as the pneumatic pressure while the hollow core is expanded with the compressed air. A method for RTM molding of a hollow structure FRP, wherein the molding is performed by pressure injection, impregnation and curing. 5. The method for RTM molding of a hollow structure FRP according to claim 4 , wherein the air pressure is sealed in the hollow core after the boundary between the regions of the design layer is clamped with a mold. After molding, once reduced pressure a hollow core, hollow structure according to the low pressure of the compressed air in the open state of the upper mold to claim 4 or 5, characterized in that demolding enclosed in the core FRP RTM molding method.