| 摘要 |
PROBLEM TO BE SOLVED: To provide a device of interlace-treatment and method of interlace-treatment, suitable for producing a new interlaced yarn in a high speed-treated synthetic fiber multi-filament on forming multi-filament accompanied with the formation of small fineness single fibers.SOLUTION: In this device of interlace-treatment having a pair of fluid-ejection holes for giving the interlace to yarns, an opening surface having the fluid-ejection holes opened thereon and having a perpendicular direction to the extending direction of the fluid-ejection holes, a yarn-treating part as a recessed part where the yarn travels as opposing to the opening surface, and a slit part for introducing the yarns into the yarn-treating part; the pair of fluid-ejection holes are bored in parallel with each other at the cross section perpendicular to the traveling direction of the yarns; the yarn passage depth of the yarn-treating part provided by the recessed part including the slit part is constituted as larger than the yarn passage width of the yarn-treating part; and the shape of a ridge line forming the outline of the recessed part of the yarn-treating part is formed so that the tangent line angle θ made by a tangent line for contacting a ridge line with an axial line of the fluid-ejection holes becomes a constant or continuously increases from ≥0° angle to 90° as going from both the end parts of the recessed part of the yarn-treating part to the deepest point G of the recessed part. |
