Teijin Limited

Tomoo Mizumura

Nobuyoshi Miyasaka

Ichiro Kitano

Chiaki Tashiro

Polyester fiber having deformed cross section and yarn and fabric comprising the same

A thick and thin polyester multifilament yarn having an excellent natural fiber yarn-like hand, a dry touch and spun yarn-like appearance includes a plurality of individual thick and thin polyester multifilaments varying in thickness along the longitudinal direction thereof and exhibits a spectrum having a first peak (Pmax ) of a coefficient of variation in yarn thickness of 4 to 10 cm, a second peak (Pmax ) of the yarn thickness variation coefficient of 50 to 150 cm and a ratio (Pmax /Pmax ) of 1.5 to 4.0, measured by the normal mode test method using the Uster evenness tester.

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Matsuyama, Japan

Tomoo Mizumura