Polyester composite thick and fine yarn and method for process for producing same, and method for production thereof and woven or knitted fabric therefrom
a technology of polymer composite and thick and fine yarn, which is applied in the direction of yarn, weaving, transportation and packaging, etc., can solve the problems of unsatisfactory spinnery touch and appearance, and low softness of composite yarn
Inactive Publication Date: 2006-08-10
TEJIN FIBERS LTD
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AI Technical Summary
Benefits of technology
[0024] The woven or knitted fabric of the present invention may be one further processed by a mass-reduction treatment with an alkali, which alkali-treated woven or knitted fabric has a plurality of cracks formed on the peripheral surfaces of the thick portions of the plurality of polyester individual thick-and-thin filaments contained in the polyester composite thick-and-thin yarn.
[0025] The woven or knitted fabric of the present invention may be one, further processed by a mass-reduction treatment with an alkali, in which an alka
Problems solved by technology
However, as the thick-and-thin multifilament yarn wound around the multifilament yarn having the high dyeability and the uniform thickness has been passed through a crimping procedure in which the polymer molecules are fully orientated, the resultant composite yarn exhibits a low softness and thus is unsatisfactory in spun yarn-like touch and appearance.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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example 1
[0083] A polyethylene terephthalate thick-and-thin multifilament yarn (A) having an ultimate elongation of 130%, a shrinkage in boiling water of 55%, a yarn count of 110 dtex / 36 filaments a cross-sectional area ratio αA / αB of thin portions to thick portions of 0.64, a length of thick portions of 10 to 80 mm and a length of thin portions of 10 to 60 mm, and a high dyeability polyester multifilament yarn (B) produced by cold-drawing an undrawn multifilament yarn of a polyethylene terephthalate copolymer containing, as a comonomer, 2.6 molar % of 5-sodium sulfoisophthalic acid at a draw ratio of 1.2 and having an ultimate elongation of 35%, a shrinkage in boiling water of 15% and a yarn count of 84 dtex / 24 filaments, were doubled; the doubled composite yarn was interlace-treated at a processing speed of 600 m / min. under an air jet pressure of 300 kPa, to provide a mixed and interlaced composite yarn having a number of interlacements of 30 / m. The mixed and interlaced composite yarn was ...
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Abstract
A polyester composite thick-and-thin multififament yarn having a natural fiber grandrelle yarn-like appearance and spun yarn-like appearance and hand is constituted from a polyester thick-and-thin multifilament yarn (A) having thick and thin portions alternately arranged with each other and a polyester multifilament yarn (B) having a high dyeability and a uniform thickness and, in each composite thick portion (a) of the composite yarn, the individual filaments of the yarn (B) forms a core part and the thick portions of the individual filaments of the yarn (A) are distributed around the core part to form a sheath part; and, in each composite thin portion (b) of the composite yarn, the individual filaments of the yarn (B) and the thin portions of the individual filaments of the yarn (A) are distributed in random mixture with each other; and, when the composite yarn is dyed, the composite thick portions (a) are colored in a lighter color and the composite thin portions (b) are colored in a darker color.
Description
TECHNICAL FIELD [0001] This invention relates to a polyester composite thick-and-thin yarn, a process for producing the same and a woven or knitted fabric produced from the same. More particularly, the present invention relates to a polyester composite thick-and-thin yarn having a spun yarn-like appearance and a natural fiber grandrelle yarn-like dyeability, a process for producing the yarn with high efficiency and a woven or knitted fabric produced from the yarn and having a spun yarn woven or knitted fabric-like appearance and a natural fiber grandrelle yarn-woven or knitted fabric-like dyeability. BACKGROUND ART [0002] It is known that a multi-colored composite textured yarn having a grandrelle yarn- or sprinkly colored yarn-like appearance is produced by combining two or more types of filament yarns different in dyeability from each other to provide a composite yarn structure having dark colored portions and light colored portions, which portions may be the same in color hue as ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Patent Timeline
Login to View More IPC IPC(8): D02G3/00D02G3/04D06M11/00D02G3/34D02G3/36D02G3/38D02J1/08D03D15/567D06M101/32
CPCD02G3/346Y10T428/2933D02G3/38
InventorSHIGEMURA, YUKIHIRO
OwnerTEJIN FIBERS LTD