Patent ID: 8491297

Claim:
A device for manufacturing a composite material part that comprises a resin matrix that is reinforced by fibers and has a Z-shaped section with a recessed zone with walls and an opening to outside the recessed zone, said device comprising: a mold whose shapes are adapted to those of the part; a compacting membrane adapted to cover at least part of said mold and to cover the opening of the recessed zone; sealing means at a periphery of the part between said mold and said compacting membrane; and at least one inflatable tubular bladder with closed ends between the part and the compacting membrane in the recessed zone between the walls of the recessed zone, said at least one inflatable tubular bladder comprising at least one orifice between the closed ends that communicates with a corresponding orifice in said compacting membrane to link an inside volume of said inflatable tubular bladder with an outside of the device, said at least one inflatable tubular bladder being adapted to occupy a first state before polymerization in which said at least one inflatable tubular bladder occupies a low volume so as to allow insertion into the opening of the recessed zone, and a second state during polymerization in which said at least one inflatable tubular bladder occupies a larger volume so as to exert pressure on the walls of the recessed zone, wherein said compacting membrane exerts pressure against said at least one inflatable tubular bladder during polymerization to press said at least one inflatable tubular bladder against the walls of the recessed zone that are in contact with said at least one inflatable tubular bladder.