Weaving machine, method for simultaneously weaving two pile fabrics on such a machine and pile fabric obtainable with such a method

Weaving machine for simultaneously weaving a top pile fabric and a bottom pile fabric, each pile fabric presenting one or several pile patterns and including tufts, made from pile warp yarns, binding warp yarns and weft yarns, the machine comprising

• a pile warp yarns feeding unit,
• a binding warp yarns feeding unit,
• a shedding unit for creating a shed with the pile warp yarns and the binding warp yarns,
• a weft insertion unit for inserting the weft yarns in the shed, in successive insertion cycles,
• a beating-up mechanism for beating the weft yarns into the shed,
• a take up system for taking-up the two pile fabrics and
• a control unit for controlling operation of the weaving machine,
• characterized in that the weaving machine also comprises a treatment unit located, along a path of the pile warp yarns, between the pile warp yarns feeding unit and the shedding unit, for applying different segments of treatment on at least some of the pile warp yarns.

Method for simultaneously weaving a top pile fabric and a bottom pile fabric each fabric presenting pile printed patterns and including

• tufts, made from pile warp yarns,
• binding warp yarns and
• weft yarns,
• this method taking place on a face-to-face weaving machine which comprises:
• a pile warp yarn feeding unit,
• a binding warp yarns feeding unit,
• a shedding unit for creating a shed with the pile warp yarns and the binding warp yarns,
• a weft insertion unit for inserting the weft yarns in the shed in successive insertion cycles,
• a beating-up mechanism for beating-up the weft yarns into the shed,
• a take-up system for taking-up the two pile fabrics,
• a drawing-in unit for drawing the pile warp yarns from the pile warp yarn unit and
• a control unit for controlling the weaving machine characterized in that the method includes at least the following steps:
• a) presenting the pile warp yarns to a treatment unit located, along a path of the pile warp yarns, between the pile warp yarns feeding unit and the shedding unit,
• b) applying, with the treatment unit, different segments of treatment on at least some of the pile warp yarns,
• c) weaving the treated pile warp yarns into the two pile fabrics.

Pile fabric presenting a pile pattern on one at least side, this fabric including:

• a backing fabric woven with yarn sets including :
• at least two binding warp yarns
• and weft yarns
• and pile tufts
• interlaced in the backing fabric,
• belonging to a yarn set,
• and each forming two pile leg portions on a front side of a backing fabric, and at least a pile burl portion on a back side of the backing fabric, characterized in that for a first pile tuft and a second pile tuft consecutive in a warp direction in a yarn set,
• at least one of the first and second consecutive tufts includes two segments with different colours on the same tuft, and
• the pile burl portion of the first tuft discloses a segment of a first colour and the pile burl portion of the second tuft discloses a segment of a second colour, different from the first colour.