PURPOSE: To obtain polyester woven or knitted fabric having down-like fibril on the surface of woven or knitted fabric, down-like surface touch and flexibility and further high water absorption properties and a dry feeling.
CONSTITUTION: Woven or knitted fabric comprises ≥20% of constituent yarn of woven fabric or knitted fabric composed of polyester yarn having a great number of streak-like channels with 0.1-3μm width, ≥5μm length and ≤5μm intervals of adjoining channels extending in the direction of fiber axis on the surface of the yarn or further having voids at least partially communicating with the yarn surface in the interior of the yarn. The yarn on the surface of woven or knitted fabric is at least partially split into fibers having 0.05-5μm diameters and a fibril-like fiber end having ≥10μm length is projected from part of the surface of the woven or knitted fabric. The woven or knitted fabric is obtained by weaving or knitting polyester yarn containing an organic sulfonic acid metal salt or the organic sulfonic acid metal salt and a polyethylene, treating the fabric at ≥120°C for ≥10 seconds with dry heat and then treating the fabric with an alkali to reduce ≥20wt.% of the fabric.
FUKUI JUETSU
ISHIKAWA TAKESHI
SAKAKURA HIDEO
