Toyo Boseki Kabushiki Kaisha

Toyobo Co., Ltd.

Hiroshi Yasuda

Seiki Nishihara

Tetsushi Oka

Katsuya Tani

Hisao Nishinaka

Ichiro Yoshida

Toshikiyo Tanaka

Shosuke Nanri

Hiroshige Sugiyama

Rokuro Morishita

Taizo Ikezawa

Mitsura Seto

Jiro Nagatamo

Tokio Kawaguchi

Susumu Omori

Polymer blend fibers having a phase separation structure are provided. The phase separation structure is a sea-island structure and a diameter D,on a circle basis of an island phase of the sea-island structure in a transverse cross-section of the fibers is in the range of 0.001 to 0.4 &mgr;m.

Method for producing polymer blend fibers having phase separation structure

The invention provides a highly stretchable fabric having an elongation percentage of 5 to 45% and a recovery percentage of elongation of at least 70% and comprising spun yarns serving at least as warps or wefts, the fabric being characterized in that the spun yarns contain two-component composite fibers comprising a highly shrinkable polyester component A and a polyester component B less shrinkable than the polyester component A, the composite fibers being so oriented that in the vicinity 5 of the crests of weaving crimps of the spun yarn, the polyester component A faces toward the inner side of the crimps. The invention also provides a process for producing the fabric. The fabric is excellent in stretchability and recovery from elongation and is capable of retaining its appearance and hand.

Highly stretchable fabrics and process for producing same

Polymer blend fibers having a phase separation structure are provided. The phase separation structure is a sea-island structure and a diameter D.sub.1 on a circle basis of an island phase of the sea-island structure in a transverse cross-section of the fibers is in the range of 0.001 to 0.4 .mu.m.

Polymer blend fibers having phase separation structure and method for

A method for preparing a stretched polymeric material of high strength and high modulus which comprises shaping a dilute solution of a synthetic polymer having an average molecular weight of not less than 3.times.10.sup.5, followed by cooling to make a gel-like filament or film, and stretching the resultant gel-like filament or film at a high stretch ratio, characterized in that a solution or dispersion of (a) the gel-like globules of said synthetic polymer having the solvent occluded therein or (b) the fine powders of said synthetic polymer having an average particle weight of not more than 5.times.10.sup.-5 mg per particle in a solvent is used as or for preparation of said polymer solution to be shaped.

Production of stretched polymeric material having high strength and high

A water-resistant and high-strength laminate which comprises a base cloth of woven or knitted cloth obtained by weaving or knitting warps and wefts wherein at least a portion of warps and/or wefts is ultra-high-strength-polyethylene filaments and a majority of the rest is polyester fibers, at least one surface of said base cloth being laminated with a biaxially oriented polyester film through an adhesive layer.

Water-resistant and high-strength laminate

Stretching polyester tows at a speed greater than 150 m/min., wherein more than 85 mol percent of the recurring units are units of ethylene terephthalate, is carried out at a stretch ratio satisfying the formula

Process for the production of polyester fiber

A method for producing polyester fibers having excellent dyeability with basic dyes or disperse dyes, which comprises melt-spinning a polyester comprising predominantly (at least 80% by mol) repeating units of ethylene terephthalate and containing 0.5% by mol or more, preferably 1.5 to 5% by mol of an ester unit derived from a dicarboxylic acid or diol containing at least one metal sulfonate group under the condition of being highly oriented so as to give filaments having a birefringence (.DELTA.n) of 0.015 to 0.100 and drawing the resulting filaments at a fixed temperature and in a fixed draw ratio, and the polyester fibers which can be dyed with basic dyes or disperse dyes at a temperature of less than 100.degree. C at a sufficiently high dye adsorption rate to give dyed fibers.

Method for producing polyester fibers

An anti-pilling polyester fiber having an intrinsic viscosity of 0.32 to 0.48 which has the following physical properties: tenacity, 3.5 to 5.0 g/d; knot tenacity, not more than 3.0 g/d; ratio of tenacity and knot tenacity, not less than 1.5.

Growing community of inventors

Ohtsu, Japan

Hiroshi Yasuda