Method for manufacturing high density pile fabrics

Method for manufacturing face-to-face woven pile fabrics, two backing fabrics being woven above one another on a weaving machine by inserting weft yarns in successive weft insertion cycles (a, b, c, d) between binding and tension warp yarns (4, 5, 14, 15), the pile warp yarns forming a pile in at least part of the pile fabric by being interlaced alternately around a weft yarn (1) in the upper fabric and around a weft yarn (1) in the lower fabric and the pile warp yarns forming no pile in at least another part of the pile fabric and being interlaced in one of the backing fabrics in accordance with a predetermined pattern, characterized in that the said weaving machine comprises at least three weft insertion means and in that only one weft yarn (1) is inserted at each weft insertion cycle, the non pile forming pile warp yarn to be interlaced in the upper fabric and the non pile forming pile warp yarns to be interlaced in the lower fabric are each positioned on a different level (N1, N2) and in successive series of four weft insertion cycles (a, b, c, d), each time during two successive weft insertion cycles (a, b) one weft yarn (1) being inserted under the two levels (N1, N2) and one weft yarn (1) being inserted above the two levels (N1, N2) and each time during two other successive weft insertion cycles (c, d), one weft yarn (1), in each of these weft insertion cycles being inserted between the said levels (N1, N2).