Installation and a method for fabricating a fiber texture in the form of a strip presenting a profile that varies in cross-section

A method of fabricating a fiber structure in the form of a strip presenting a varying profile in cross-section by three-dimensional or multilayer weaving between a plurality of layers of warp yarns interlinked by weft yarns the warp yarns being driven at the outlet from the loom by one or more take-up rollers the fiber texture being wound onto a storage mandrel placed downstream from the take-up rollers, each take-up roller and the storage mandrel presenting across its axial width a radius that varies so as to define an outer surface having a profile in relief;

• wherein, during weaving, the method comprises adding a plurality of sectors on the outer surface of at least one take-up roller each sector extending over a fraction of the circumference of the take-up roller and over all or part of the axial width of said take-up roller each sector also presenting at least one thickness that is determined in such a manner as to modify locally the thickness of the profile in relief of the outer surface of the take-up roller.