METHOD FOR PRODUCING RING-SHAPED FIBROUS STRUCTURES, IN PARTICULAR FOR MAKING PARTS IN COMPOSITE MATERIAL

摘要

The invention concerns a method for producing ring-shaped fibrous structures which consists in the following steps: using a texture in the form of a strip (50) formed of two stacked unidirectional webs with their direction forming opposite angles relative to the longitudinal direction of the strip, the two webs being mutually linked so as to form deformable elementary meshes; winding the texture in deformation to transform it into a flat spiral, the elementary meshes being deformed such that the variation of the mass per unit area between the internal and external diameters of the coils is limited, and pressing the coils flat against one another.