KR20180045245A - Cotton-like Polyester composite yarn with Exellent Absorption And Dry Property And Elasticity, And Method Preparing Same - Google Patents

Abstract

The present invention relates to a method for producing a cotton-like polyester composite yarn with excellent perspiration-absorbent and quick-drying functions and stretchability, comprising the following steps: a yarn supplying step for supplying a side-by-side partial drawn yarn made of polytrimethylene terephthalate (PTT) and polyethylene terephthalate (PET) as a core yarn, and a multi-lobal polyester partial drawn yarn as an effective yarn; a twisting step for twisting the core yarn and the effective yarn by air interlocking so as to form a composite yarn; a stretching/false-twisting step for false-twisting the twisted composite at 150-180°C while stretching the same; and an untwisting step for untwisting the false-twisted composite yarn.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cotton polyester polyester composite yarn excellent in sweat-absorbing quick drying property and stretchability,

More particularly, the present invention relates to a cotton polyester conjugate yarn excellent in sweat-absorbent quick drying property and stretchability, which is produced from a yarn having high stretchability and a yarn having a modified cross-section, and a process for producing the same .

Composite yarns of two or more yarns have been developed with a wide range of efforts to combine the advantages of synthetic fibers and the advantages of spinning yarns into one yarn.

Conventionally, a composite yarn was manufactured by simply folding filaments of synthetic fibers and spun yarns of natural fibers. However, many yarn fabrication techniques have been developed to meet the needs of the consumer and the development of folding technology.

In particular, polyester composite yarns have been developed in many polyester composite yarns capable of adding various functions to the basic excellent physical properties of the polyester.

Conventional polyester composite yarns have been widely used for manufacturing a composite yarn having a bulkiness due to a heat shrinkage difference between two yarns by producing a partially oriented yarn (Partially Oriented Yarn, POY) and a drawn yarn by air entanglement with each other There has been known a method for producing a composite yarn by using polyester fibers produced by incorporating inorganic particles into an effect yarn or by using natural fibers such as acetate and rayon for a unique surface effect of a polyester composite yarn.

Korean Patent Laid-Open Publication No. 2001-0063955 discloses a polyester / acetate composite yarn produced by entangling an acetate yarn having a fineness of 50 to 100 denier and a polyester non-uniform yarn. The composite yarn of the present invention is characterized in that the natural fiber, acetate, is used as the effect yarn, and the ordinary polyester fiber is used for the examination to have both advantages of the natural fiber and the synthetic fiber. However, Problems such as scintillation, uneven dyeing of the effect yarns and judging, and the problem of poor stretchability were found.

Korean Patent Laid-Open Publication No. 2006-78217, Japanese Patent Application Laid-Open No. 1025636 and Japanese Patent Laid-Open No. 11181643 disclose a method for producing a polyamide-based composite yarn. Among them, Korean Patent Laid-Open Publication No. 2006-78217 relates to a method for producing a composite yarn made of two types of yarns, in detail, using an original nylon FDY (Fully Drawn Yarn) as an examination, By using nylon POY (Partially Oriented Yarn), it is described that it provides a natural appearance such as natural fibers due to original nylon, and a composite yarn excellent in sweat-absorbing quick-drying property and soft feeling due to nylon in the section. However, the above method has excellent bulkiness and touchability, but can not expect a natural feel or color development due to the use of synthetic fibers.

Furthermore, conventional polyester composite yarns can exhibit bulky characteristics, but have insufficient water absorbability and are insufficient in development for polyester composite yarns that have the same feel as natural fibers.

The present invention was invented to solve the above-mentioned problems, and it is an object of the present invention to provide a cotton polyester composite yarn excellent in sweat-absorbent quick-drying property and stretchability capable of exhibiting both quick- And to provide the above-mentioned objects.

It is another object of the present invention to provide a cotton polyester conjugate yarn excellent in sweat-absorbent quick-drying property and stretchability, which can have a natural fiber texture such as cotton through a process of smearing and smoothening smoothed ginseng yarn having excellent stretchability and non- .

The present invention relates to a method for producing polyester yarn, which comprises: a yarn supplying step of supplying a yarn of polyester-partially-stretched yarn of a modified cross-section to an effect yarn by examination of a side-by-side type partially stretched yarn formed of PTT and polyethylene terephthalate (PET); A step of folding the inspection and effect yarns through air entanglement to form a composite yarn; A stretching false twisting step in which the warped composite yarn is stretched while being stretched at 150 to 180 ° C; And a maraging step of twisting the twisted composite yarn, wherein the twisted composite yarn is twisted.

The present invention also provides a method for producing a cotton polyester conjugate yarn having sweat-absorbent quick drying and stretchability, characterized in that the stretching ratio in the stretching and twisting step is 1.5 to 2.0.

The present invention also provides a process for producing a cotton polyester conjugate yarn having sweat-absorbent quick-drying and stretchability, wherein the residual elongation of the yarn after the above-mentioned maraging step is 20 to 50%.

Also provided is a cotton-polyester conjugate yarn having sweat-absorbent quick drying properties and stretchability, which is produced by the above production method.

The cotton polyester composite yarn having sweat-absorbing quick-setting and stretchability according to the present invention as described above is obtained by mixing a side-by-side partially stretched yarn made of polytrimethylene terephthalate (PTT) and polyethylene terephthalate (PET) It is a composite yarn made of an ester partially stretched yarn, and has excellent stretchability and quick drying property.

In addition, there is an effect of having the texture of natural fibers such as cotton through the twisting process and the smelting process after the evaluation and the effect yarn are combined.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a process drawing showing a process sequence of a cotton polyester composite yarn having sweat-absorbent quick drying and stretchability according to the present invention. FIG.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, it should be noted that, in the drawings, the same components or parts are denoted by the same reference numerals whenever possible. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted so as to avoid obscuring the subject matter of the present invention.

As used herein, the terms " about, " " substantially, " " etc. ", when used to refer to a manufacturing or material tolerance inherent in the stated sense, Accurate or absolute numbers are used to help prevent unauthorized exploitation by unauthorized intruders of the referenced disclosure.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a process drawing showing a process sequence of a cotton polyester composite yarn having sweat-absorbent quick drying and stretchability according to the present invention. FIG.

The present invention relates to a cotton-polyester composite yarn having sweat-absorbing quick-drying and stretchability and is manufactured including a yarn feeding step, a yarn feeding step, a stretching false twisting step, and a maraging step as shown in FIG.

The yarn supplying step is a step of inserting a side-by-side type partially drawn yarn made of polytrimethylene terephthalate (PTT) and polyethylene terephthalate (PET) And the effect yarns can be prepared and supplied to the winding rollers in advance.

Alternatively, the polyester composite yarn of the present invention may be manufactured by further including a spinning step of spinning the yarn before the yarn supplying step and the yarn yarn before the yarn supplying step, respectively.

In the case of further including the spinning step, the manufacturing process can be simplified and the economical efficiency can be improved by unifying the process.

The side-by-side type examination of polytrimethylene terephthalate (PTT) and polyethylene terephthalate (PET) used in the present invention is the most flexible fiber among the synthetic fibers except polyurethane yarns, Thereby improving the elasticity.

The screening of the side-by-side type formed of PTT and polyethylene terephthalate (PTT) preferably has a stretchability of 20% or more and a stretchability of 30% or more.

In addition, the effect yarn of the polyester partially stretched yarn having the modified cross-section used in the present invention gives a function of generating innumerable pores when forming the yarn or fabric and absorbing moisture through capillary phenomenon.

The polyester partially drawn portion of the above-mentioned modified cross-section may be any of cross-sectional shapes capable of forming pores when formed into a fabric such as a cross-sectional shape, a trilobal shape, a 5-shape cross-section and a 4-shape cross-section.

The yarn mixing step is a step of folding the yarn yarn and the yarn yarn through air entanglement, and the yarn yarn and the yarn yarn are folded through a general air entanglement device to produce a composite yarn.

In the stretching and twisting step, the composite yarn is stretched at a temperature of 150 to 180 DEG C while being stretched at a temperature of 150 to 180 DEG C. The composite yarn is preferably stretched at a stretching ratio of 1.5 to 2.0, and is stretched at a high temperature to improve crystallinity and physical properties. It is most preferable that the stretching is carried out at a draw ratio of 1.7 to 1.9 in the stretching and twisting step.

It is preferable that the composite yarn is twisted at the same time as the elongation, and the false twist is preferably twisted at a twist number of 500 to 2000 T / M.

If the temperature is lower than 150 ° C in the elongation and tearing step, the amount of tearing may be reduced. If the temperature is higher than 180 ° C, a non-tearing and a rolling strength phenomenon may occur.

In the above-mentioned maraging step, the twisted composite yarn is twisted, and the twisted composite yarn is 100% twisted to improve the winding property and have a touch feeling like a face.

In addition, the degree of elongation is lowered as the elongation at the stretching step and the seaweed step at about 100 to 150% of elongation at the stretching yarn of the effect yarn. There is a difference in stretchability and surface texture depending on the elongation after the seam step, that is, the residual elongation.

In the present invention, it is preferable that the residual elongation of the effect yarn after the maraging step is 20 to 50% in order to improve the surface texture, and the residual elongation of the yarn is preferably 30 to 40% for the sake of fairness.

A winding step of winding the composite yarn after the smoothing step may be further performed. The winding step may be performed in a general winding step.

As described above, the present invention can be applied to a side-by-side type partially stretched yarn made of PTT and polyethylene terephthalate (PET) After the stretching and twisting, it is heat-treated and the composite yarn after the fusion is combined, so that the surface texture is expressed in the characteristic of low elongation of the modified cross section.

In addition, it exhibits sweat-absorbent quick-drying property expressed by the modified cross-section and high stretchability expressed through examination of polytrimethylene terephthalate (PTT) and side-by-side type formed of polyethylene terephthalate (PET).

Hereinafter, examples of the method for producing the cotton polyester conjugate yarn having sweat-absorbent quick drying and stretchability according to the present invention are shown, but the present invention is not limited to the examples.

Example  1 to 4

Side-by-side type partially drawn yarn made of polytrimethylene terephthalate (PTT) and polyethylene terephthalate (PET) was used as a test, polyester cross-linked yarn of cross-shaped cross section was used as an effect yarn, And the composite yarn was formed by air entanglement to form a composite yarn.

The composite yarn was stretched at 160 DEG C while being twisted at a twisting number of 800 T / M. The twisted yarn was subjected to a twisting step in which the twisted composite yarn was 100% Polyester composite yarn was produced.

Table 1 shows the firing ratio, the stretchability of the examination and the manufacturing method in Examples 1 to 4.

Comparative Example  1 to 3

A side-by-side type partially stretched yarn made of PTT and polyethylene terephthalate (PET) was used as an examination yarn, and a cross-linked polyester cross-linked yarn was used as an effect yarn. (Comparative Example 1), forming a composite yarn by air entanglement after compaction heat treatment (Comparative Example 2), or forming a composite yarn after relaxation heat treatment (Comparative Example 1) And air-entangled to form a composite yarn (Comparative Example 3).

Table 1 shows the manufacturing conditions for the inspection and effect yarns of Comparative Examples 1 to 3.

division Example 1 Example 2 Example 3 Example 4 Comparative Example 1 Comparative Example 2 Comparative Example 3 Stretching cost 1.9 1.85 1.8 1.75 1.75 1.75 1.75 judge
(elasticity%) 50 45 40 30 30 32 35 Apostle Effectiveness, simultaneous extension of judging Effectiveness, simultaneous extension of judging Effectiveness, simultaneous extension of judging Effectiveness, simultaneous extension of judging Examination Normal stretching, effects Examination Normal stretching, effect dressing Heat treatment Examination normal stretching, effect relaxation heat treatment

◈ Evaluation of physical properties of examples and comparative examples

1. Property evaluation method

* The elongation was measured using an automatic tensile tester (Textechno) at a speed of 50 cm / min and a grip distance of 50 cm.

* Fabric stretchability, sweat-absorbent quick-dryness evaluation: Relative sensory evaluation by 5 experts (score of 10 points)

* Fairness assessment: grade 1 production / overall yield * 100 = yield (by weight)

* Moe, cotton texture evaluation: Performed relative sensory evaluation by 5 experts (Excellent (◎), Excellent (○), Average (△), Poor (X), Very poor (XX)

division Example 1 Example 2 Example 3 Example 4 Comparative Example 1 Comparative Example 2 Comparative Example 3 Effectiveness
Residual elongation 20 30 40 50 110 110 110 Stretch Fabric
(point) 9 8 7 6 6 6 6 Sweat fast drying 7 7 7 7 2 2 2 Fairness (%) 80 85 90 85 90 95 90 Mow △ ○ ◎ ◎ ○ ◎ ○ Cotton texture ◎ ○ ○ ○ - △ △ △

As shown in Table 2, all of Examples 1 to 4, which are the cotton-polyester complex conjugates having sweat-absorbent quick drying and stretchability of the present invention, exhibited higher sweat-absorbing and quick drying properties than Comparative Examples 1 to 3, To 3 < / RTI >

As is clear from Examples 1 to 4 of Table 2, when the stretching ratio in the stretching and twisting step is high as in Example 1, the stretchability and the surface texture are good, but the residual elongation of the yarn is low, Fairness is lowered, and when the residual elongation of the effect yarn is 30 to 40% as in Examples 2 and 3, it is found that the stretchability, the fairness and the surface texture are excellent.

Claims (4)

A yarn supplying step of supplying a polyester partly drawn yarn of a modified cross section to an effect yarn by examining a side by side type partially drawn yarn formed of PTT and polyethylene terephthalate (PET);
A step of folding the inspection and effect yarns through air entanglement to form a composite yarn;
A stretching false twisting step in which the warped composite yarn is stretched while being stretched at 150 to 180 ° C;
And a coagulating step of coagulating the coagulated composite yarn. The method for producing a cotton polyester conjugate yarn having sweat-absorbent quick-drying and stretchability.
The method according to claim 1,
Wherein the stretching ratio is 1.5 to 2.0 in the stretching and twisting step.
The method according to claim 1,
And the residual elongation of the effect yarn after the step of grain refinement is 20 to 50%.
A cotton polyester composite yarn having sweat-absorbent quick drying and stretchability, which is produced by the production method of any one of claims 1 to 3.

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