Teijin Limited

Tsukasa Kobayashi

Mikio Tashiro

Norihiro Minemura

Manabu Toyao

Makoto Yoshida

Tadashi Hirakawa

Nobuharu Izawa

Tamio Yamamoto

Tamio Mitamura

Ryuji Uemura

Akira Kimura

Masumi Okumura

Sei Tanizawa

Method of making ultra-fine polyester fibers

Polyester and cotton blended yarn and polyester staple fiber stock used

A paper-like polyester sheet having an enhanced filtering property, an excellent mechanical strength and satisfactory touch and appearance, comprises polyester staple fibers and has a coefficient of air flow resistance of 1,000 to 50,000 dyn.s/cm.sup.4 at a volume fraction of the fibers of from 0.01 to 0.24.

Paper-like polyester fiber sheet and process for producing the same

A synthetic fur closely resembling a natural fur comprises relatively long and thick guard hair-like raised synthetic fibers, each having a transverse cross-section wherein at least one constricted part is formed, and underfur-like raised synthetic fibers, each having a rate of dissolution in a solvent or of hydrolysis with a hydrolyzing agent higher than that of said guard hair-like raised fibers, and a length and fineness less than those of said guard hair-like raised fibers. The synthetic fur is prepared by applying a viscous treating liquid containing a solvent or hydrolyzing agent to a raised surface of a fabric comprising relatively thick raised synthetic fibers, each having a transverse cross-section wherein at least one constricted part is formed, and relatively fine raised synthetic fibers, each having a rate of dissolution in the solvent or of hydrolysis with the hydrolyzing agent higher than that of said relatively thick raised fibers.

Synthetic fur and process for preparation thereof

Growing community of inventors

Matsuyama, Japan

Tsukasa Kobayashi