Woven or knit fabric and process for producing the same

Abstract

A woven or knit fabric comprising air-jet interlacing spun yarns comprising polyester fibers of low titanium oxide content; a woven or knit fabric comprising air-jet interlacing spun yarns comprising polyester staple fibers obtained by graft polymerization of a hydrophilic compound; a woven or knit fabric comprising air-jet interlacing spun yarns comprising side by side crimped staple fibers; a woven or knit fabric comprising air-jet interlacing spun yarns comprising low-shrinkage staple fibers and copolymerized polyester staple fibers; and a process for producing these. A woven or knit fabric of polyester staple fibers that is bulky, excelling in moisture retention, lightweightness, water absorptivity, quick dryability, etc. and exhibits excellent anti-pilling properties can be obtained.

Description

FIELD OF THE INVENTION

[0001] The present invention relates to a woven or knit fabric and a process for producing the same, more specifically, a woven or knit fabric comprising air-jet interlacing spun yarn, and a process for producing the same.

[0002] The present invention includes four aspects of first to fourth ones.

[0003] The first aspect of the present invention relates to a woven or knit fabric comprising an air-jet interlacing spun yarn which comprises a polyester staple fiber in which said fabric can exhibit ultraviolet shielding effect, anti-transparency and anti-pilling property by an unprecedented mechanism. Furthermore, this aspect relates to a woven or knit fabric which comprises a polyester staple fiber, can exhibit anti-pilling property, and gives excellent quick-drying property even if no special modified polyester is used.

[0004] The second aspect relates to a woven or knit fabric comprising an air-jet interlacing spun yarn which comprises a polyester staple fiber ...

Examples

examples

[0145] The present invention is specifically illustrated by the following examples and comparative examples, which do not limit the present invention in any way.

example 13

[0225] Production of a Latently-Crimped Polyester Fiber I

[0226] As a polyester (A) and a polyester (B), the following were used, respectively: polyethylene terephthalate (intrinsic viscosity: 0.607, melting point: 265° C.); and a copolymer polyester (intrinsic viscosity 0.637, melting point: 248° C.) having, as the basic backbone thereof, polyethylene terephthalate, in which isophthalic acid constituted 4% by mole of acid components and 5-sodiumsulfoisophthalic acid constituted 2% by mole thereof. A composite spinning nozzle was used to spin the polyesters into a yarn at a polymer temperature of 282° C. and a spinning rate of 1,600 m / min. Thereafter, the yarn was drawn at a draw temperature of 155° C., a draw ratio of 2.64, and a drawing rate of 140 m / min. in a drawing step, crimped, and cut. The resultant side by side latently-crimped polyester fiber I having a solid round cross section (fineness: 2.0 dtex, cut length: 38 mm) had a hot water shrinkage rate of 37.8% (free shrinkage...

example 14

[0233] Production of a Y-Shaped Cross Section Fiber

[0234] Using a spinning nozzle for a Y-shaped cross section fiber, polyethylene terephthalate (intrinsic viscosity: 0.633) was sput at a polymer temperature of 288° C. and a spinning rate of 1,600 m / min. Thereafter, the spun yarn was drawn at a draw temperature of 112° C., a draw ratio of 2.32, and a drawing rate of 140 m / min. in a drawing step, crimped, and cut. The resultant Y-shaped cross section low-shrinkage fiber (fineness: 1.3 dtex, modified cross section degree: 2.4, cut length: 38 mm) had a boiling water shrinkage rate of 1.4%.

[0235] The resultant low-shrinkage fiber with a Y-shaped cross section and the latently-crimped polyester fiber II were used and subjected to card cotton mixing, and then a Murata Vortex Spinner MVS manufactured by Murata Machinery, Ltd. was used to spin them at a nozzle pressure of 0.45 MPa and a spinning-out speed of 400 m / min. under conditions that the sliver grain and the draft thereof were set ...

FIELD OF THE INVENTION

[0001] The present invention relates to a woven or knit fabric and a process for producing the same, more specifically, a woven or knit fabric comprising air-jet interlacing spun yarn, and a process for producing the same.

[0002] The present invention includes four aspects of first to fourth ones.

[0003] The first aspect of the present invention relates to a woven or knit fabric comprising an air-jet interlacing spun yarn which comprises a polyester staple fiber in which said fabric can exhibit ultraviolet shielding effect, anti-transparency and anti-pilling property by an unprecedented mechanism. Furthermore, this aspect relates to a woven or knit fabric which comprises a polyester staple fiber, can exhibit anti-pilling property, and gives excellent quick-drying property even if no special modified polyester is used.

[0004] The second aspect relates to a woven or knit fabric comprising an air-jet interlacing spun yarn which comprises a polyester staple fiber ...

Examples

examples

[0145] The present invention is specifically illustrated by the following examples and comparative examples, which do not limit the present invention in any way.

example 13

[0225] Production of a Latently-Crimped Polyester Fiber I

[0226] As a polyester (A) and a polyester (B), the following were used, respectively: polyethylene terephthalate (intrinsic viscosity: 0.607, melting point: 265° C.); and a copolymer polyester (intrinsic viscosity 0.637, melting point: 248° C.) having, as the basic backbone thereof, polyethylene terephthalate, in which isophthalic acid constituted 4% by mole of acid components and 5-sodiumsulfoisophthalic acid constituted 2% by mole thereof. A composite spinning nozzle was used to spin the polyesters into a yarn at a polymer temperature of 282° C. and a spinning rate of 1,600 m / min. Thereafter, the yarn was drawn at a draw temperature of 155° C., a draw ratio of 2.64, and a drawing rate of 140 m / min. in a drawing step, crimped, and cut. The resultant side by side latently-crimped polyester fiber I having a solid round cross section (fineness: 2.0 dtex, cut length: 38 mm) had a hot water shrinkage rate of 37.8% (free shrinkage...

example 14

[0233] Production of a Y-Shaped Cross Section Fiber

[0234] Using a spinning nozzle for a Y-shaped cross section fiber, polyethylene terephthalate (intrinsic viscosity: 0.633) was sput at a polymer temperature of 288° C. and a spinning rate of 1,600 m / min. Thereafter, the spun yarn was drawn at a draw temperature of 112° C., a draw ratio of 2.32, and a drawing rate of 140 m / min. in a drawing step, crimped, and cut. The resultant Y-shaped cross section low-shrinkage fiber (fineness: 1.3 dtex, modified cross section degree: 2.4, cut length: 38 mm) had a boiling water shrinkage rate of 1.4%.

[0235] The resultant low-shrinkage fiber with a Y-shaped cross section and the latently-crimped polyester fiber II were used and subjected to card cotton mixing, and then a Murata Vortex Spinner MVS manufactured by Murata Machinery, Ltd. was used to spin them at a nozzle pressure of 0.45 MPa and a spinning-out speed of 400 m / min. under conditions that the sliver grain and the draft thereof were set ...

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