Pile articles and their production.

摘要

An artificial fur-like article comprising a cloth-like fibrous structure provided with piles having a length of more than 10 mm, each pile being composed of a non-attenuated portion whose fineness does not vary substantially along its length, an attenuated portion whose fineness gradually reduces towards the top end, and a fine top end, in which
<UnorderedLists id="ula01" listStyle="none"><ListItem>(a) the non-attenuated portion is composed of a core-sheath composite fibre having a flatness ratio of 1.5-5 and a fineness of 8-50 d, and having 1-4 wing-shaped projections as viewed in cross-section;</ListItem><ListItem>(b) the top end is formed of the exposed core of the composite fibre and has a substantially uniform fineness of an average diameter of 5-25 µm and a length of 0.3-5 mm; and</ListItem><ListItem>(c) the attenuated portion has a length of 1-15 mm.</ListItem></UnorderedLists>

Said pile article is produced by rotating a cloth-like fibrous structure provided with cut piles having a length of more than 10 mm (which piles are composed of sheath-core composite fibres, each consisting of a sheath of a fibre-forming polyester and a core of a thermoplastic polymer having a decomposition rate in an aqueous solution of NaOH is less than that of the polyester, and having 1-4 wing-shaped projections, a flatness ratio of 1.5-5, an average diameter of the core portion of 5-25 µm and a fineness of 8-50 d) fixed to a rotating body; contacting the piles with an aqueous solution of an alkali while varying the contacted length by applying a centrifugal force in a direc-

tion to which the piles are raised, to gradually attenuate the piles toward the top end, and completely decomposing and removing the sheath polymer at the top end portion.