(57) A method of intermingling one or more multifilament yarns comprises feeding said yarn or yarns along a yarn channel having a uniform V-shaped cross-section throughout its length and admitting at least one fluid stream to said channel in a direction transversely of the channel and at a velocity such that air turbulence in the channel causes the yarn filaments to intermingle.
A device for intermingling multifilament yarns, comprises a yarn channel of V-shaped cross-section having two convergent channel sides bridged by a third side having a yarn entry slot positioned adjacent a fluid channel for admitting a high velocity fluid stream to said channel in a direction transversely of the axis of yarn travelling in said channel in use so as to intermingle the yarn filaments and prevent escape of the yarn from the channel.