Teijin Limited

Akio Kimura

Osamu Wada

Togi Suzuki

Kiyokazu Tsunawaki

Michikage Matsui

Yoshiyuki Sasaki

Shiro Kumakawa

Mitsuo Matsumoto

Shigeru Takahashi

Katsuyuki Kasaoka

Kohichi Iohara

Shinji Owaki

Kiyotaka Ozaki

Shunichi Takeda

Hiroyuki Nagai

Kozo Seimitsu

Toshimasa Shimizu

Takumi Shimazu

High and-low piles-revealing cut pile fabric cut pile fabric, having

Hollow water-absorbing polyester filaments each having a number of fine caves which are evenly distributed in at least a portion of the filament and through which the hollow is connected to the outside of the filament, are produced (1) by preparing hollow filaments from a blend of a principal polyester component and a cave-forming agent consisting of at least one member selected from:

Process for producing hollow water-absorbing polyester filaments

A high twist polyester multifilament yarn having a twist of a twist multiplier K within a range between 15,000 and 25,000, made from polyester filaments consisting essentially of a copolymer of two or more monomers selected from the group consisting of ethylene terephthalate, trimethylene terephthalate and tetramethylene terephthalate and/or a blend of two or more polymers of the respective monomers and having a breaking elongation of not more than 60% and a shrinkage in boiling water of not more than 6%. A woven or knitted crepe fabric obtained by employing such a high twist yarn has a desirable pebble configuration.

High twist polyester multifilament yarn and fabric made therefrom

A woven or knitted polyester multifilament fabric having a silk-like appearance and touch, comprised of polyester multifilament yarns containing one or more types of porous polyester filaments each having an irregular cross-sectional profile, for example, C-, L- or V-shaped profile, and numerous fine linear concave parts formed on the peripheral surface thereof and extending along the longitudinal axis of each individual filaments, the fabric being characterized by a group of said concave parts corresponding to a half of the entire number of the concave parts, each having a length of 5 microns or more and a ratio of the length to the width of each concave part of 5 or more.

Woven or knitted polyester multifilament fabric

Hollow water-absorbing polyester filaments each having a number of fine caves which are evenly distributed in at least a portion of the filament and through which the hollow is connected to the outside of the filament, are produced (1) by prepared hollow filaments from a blend of a principal polyester component and a cave-forming agent consisting of at least one member selected from:

Hollow water-absorbing polyester filament textile material

Hollow water-absorbing polyester filaments each having a number of fine caves which are evenly distributed in at least a portion of the filament and through which the hollow is connected to the outside of the filament, are produced (1) by preparing hollow filaments from a blend of a principal polyester component and a cave-forming agent consisting of at least one member selected from: (i) copolyesters containing an additional divalent organic sulfonic acid compound moiety of the formula (II): ##STR1## wherein Z is a trivalent aromatic or aliphatic hydrocarbon radical, M.sup.1 is H or metal atom, R.sup.1 is an ester-forming organic radical and R.sup.2 is an H atom or ester-forming organic radical; (ii) phosphorus compounds of the formula (III): ##STR2## wherein R.sup.3 is a monovalent organic radical, X is --OR.sup.4, wherein R.sup.4 is an H atom or a monovalent organic radical, --OM.sup.3, wherein M.sup.3 is a metal atom, or a monovalent organic radical, M.sup.2 is a metal atom and m=0 or 1, and; (iii) aromatic carboxy-sulfonic acid compounds of the formula (IV): ##STR3## wherein Y is an H atom or ester-forming organic radical, M.sup.4 and M.sup.5 each are a metal atom, respectively, and n=1 or 2, and (2) by removing the at least a portion of cave-forming agent and a portion of the principal polyester component from the resultant hollow filaments so as to form numerous concaves on the peripheral and hollow surfaces, numerous pores in the body of the filament, and numerous channels through which the pores are connected to each other and to the concaves, the concaves and pores having a longitudinal size of 50 times or less the lateral size thereof, which is 0.01 to 3 microns.

Hollow water-absorbing polyester filaments and a process for producing

Novel polyester filamentary yarn is provided having (a) a fineness of 0.9 denier per filament or less, (b) an amorphous orientation in the range of 30% to 70% and (c) a negative .epsilon..sub.0.2 where said .epsilon..sub.0.2 is a structural integrity parameter. The yarn possesses ameliorated properties regarding a heat-setting property, a raising property, a dimensional stability and a twist resistance. The yarn finds its wide range of usage, for example, silky fabrics with an excellent fullness, pliability and liveliness, raised fabrics with thermally stabilized fluffs protruding straight-forwardly and an extremely soft hand, and uniformly creped fabrics with an improved surface contour are obtained therefrom.

Linear crystalline terephthalate polyester yarn and textile goods made

The present invention relates to a method of producing a twisted polyester filament yarn having a high level of twist used for a woven or knitted crepe fabric. A method of this invention comprises imparting a high level of twist to a polyester filament yarn which has particular properties, and heat setting said twisted polyester filament yarn. The first of these properties which the polyester filament yarn has is that a boil-off shrinkage in boiling water is in the range of 0% to 5%. The second is that a thermal shrinkage stress at 140.degree. C. in hot air is more than 0.03 g/de. The third is that a ratio of a thermal shrinkage stress at 180.degree. C. in hot air to a thermal shrinkage stress at 140.degree. C. is more than 1.0. The polyester filament yarn which has above mentioned properties can be obtained by repeating heat treatment several times at a temperature from 160.degree. C. to 220.degree. C. in hot air, stretching the polyester filament yarn in a range of 2% to 10% and successively shrinking it in the same range, or by being subjected to heat treatment at a temperature from 160.degree. C. to 220.degree. C. in hot air, shrinking restrictively the polyester filament yarn in a range of 0% to 10% under the relaxed state.

Growing community of inventors

Ashiya, Japan

Akio Kimura