The present invention relates to an impregnation process for a fibrous substrate, a liquid composition for implementing this process and the obtained impregnated fibrous substrate. The impregnated fibrous substrate is suitable for manufacturing mechanical or structured parts or articles. In particular the present invention deals with an industrial process for impregnating a fibrous substrate or long fibers with a viscous liquid composition containing mainly methacrylic, vinylic or acrylic components either in form of monomers or polymers. This viscous composition is called hereafter liquid monomer syrup. The invention concerns also a fibrous substrate pre-impregnated with said syrup which is useful for manufacturing mechanical or structured parts or articles. More particular the impregnation of fibrous substrate with the monomer syrup is achieved in a mould. The present invention concerns also manufacturing process for manufacturing mechanical or structured parts or articles and three-dimensional mechanical or structured parts obtained by this process.La présente invention concerne un réservoir (10 ； 30 ； 40) pour un médicament liquide (11), comprenant : une première partie limitante (16 ； 36 ； 46) et une seconde partie limitante (18 ； 38 ； 48) formant une cavité (12 ； 32 ； 42) destinée à recevoir le médicament, la première partie limitante étant sensiblement opaque et flexible, et la seconde partie limitante étant sensiblement transparente et rigide.
