KR101618073B1 - High Self-crimping and drapery Polyester composite yarn using Partially Oriented Yarn and Method Preparing Same - Google Patents

Abstract

The present invention relates to a polyester copolymer containing 1 to 30 mol% of neopentyl glycol (NPG) as a high viscosity polyester copolymer having an intrinsic viscosity (IV) of 0.6 to 0.85 dl / g or a polyester copolymer containing an isophthalic acid A polyester copolymer containing 1 to 20 mol% of isophthalic acid (IPA) and 1 to 10 mol% of a bisphenol A modified product and a low viscosity polyester having a diene content of 0.4 to 0.55 dL / g as a side- A step of supplying a yarn to supply the polyester partially drawn yarn to an effect yarn, a drawing step of drawing the yarn through the first heat roller, a step of drawing the yarn through the second heat roller A heat treatment step for relaxation heat treatment at the same time, a stretching step for stretching the relaxed heat-treated effect yarn through air entanglement and a coiling step for winding the entangled composite yarn, and a stretchable and drape- Polyester composite yarn and a process for producing the same.

Description

TECHNICAL FIELD [0001] The present invention relates to a polyester composite yarn excellent in stretchability and drape property using a partially stretched yarn and a method of manufacturing the polyester composite yarn,

More particularly, the present invention relates to a polyester composite yarn and a manufacturing method thereof, and more particularly, to a polyester composite yarn and a method of producing the same, 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 are widely used to manufacture a composite yarn having a bulkiness due to a difference in heat shrinkage between two yarns by producing a partially oriented yarn (Partially Oriented Yarn, POY) and a drawn yarn by air entanglement with each other In order to obtain a unique surface effect of the polyester composite yarn, there has been known a method of producing a composite yarn by using polyester fibers produced by incorporating inorganic particles into the yarns or by using natural fibers such as acetate and rayon .

Korean Patent Laid-Open 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 heterogeneous 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, There are problems such as scintillation, uneven dyeing of the effect yarns and judging, and problems of poor stretchability.

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.

Moreover, the conventional polyester composite yarn can exhibit bulky properties as the shrinkable filament yarn, but it is impossible to exhibit sufficient stretchability for producing a stretchable fabric.

In recent years, a compound company has been developed that has increased its elasticity by constructing an examination of potential housing. For example, Korean Patent No. 0783800 discloses a stretchable polyester composite yarn which is produced by using modified polyester fibers as an effective yarn and using polyester-based latent yarn stock as a screen for composite stretching followed by air entanglement.

The above stretchable polyester composite yarns have excellent stretchability by using polyester-based latent wind mills for examination, but they have a problem of limited use because of their low bulkiness and pungency.

Disclosure of Invention Technical Problem [8] The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a stretchable and drapery material having excellent stretchability and excellent drainage property, And an object of the present invention is to provide an excellent polyester composite yarn.

Another object of the present invention is to provide a method for producing a polyester composite yarn excellent in stretchability and drape property using a partially drawn yarn capable of improving drapeability through a difference in shrinkage ratio between the yarn and the yarn.

The present invention relates to a polyester copolymer containing 1 to 30 mol% of neopentyl glycol (NPG) as a high viscosity polyester copolymer having an intrinsic viscosity (IV) of 0.6 to 0.85 dl / g or a polyester copolymer containing an isophthalic acid A polyester copolymer containing 1 to 20 mol% of isophthalic acid (IPA) and 1 to 10 mol% of a bisphenol A modified product and a low viscosity polyester having a diene content of 0.4 to 0.55 dL / g as a side- A step of supplying a polyester yarn to an effect yarn by judging a partially drawn yarn as a yarn winding yarn; A stretching step of stretching the screen through a first heat roller; A heat treatment step of simultaneously performing relaxation heat treatment of the inspection and the effect yarn through the second heat roller; An interlacing step of concatenating the relaxed heat-treated effect yarn and the judging yarn through air entanglement; And a winding step of winding the entangled composite yarn. The present invention also provides a method of manufacturing a polyester composite yarn excellent in stretchability and drape property using a partially stretched yarn.

Further, the effect yarn is semi dull or full dull, and provides a polyester composite yarn having excellent stretchability and drape property using a partially stretched yarn.

In addition, the method further comprises a spinning step prior to the supplying step. The present invention also provides a method for producing a polyester composite yarn excellent in stretchability and drape property using a partially stretched yarn.

Also, the overfeed rate of the second heat roller in the heat treatment step is 0.1 to 10%. The present invention provides a method for producing a polyester composite yarn excellent in stretchability and drape property using a partially stretched yarn.

In the stretching step, the temperature of the first heat roller satisfies the following condition (1), and provides a method for producing a polyester composite yarn excellent in stretchability and drape property using a partially stretched yarn.

(1) Polyester Tg + 15 ° C? Temperature of first heat roller? Polyester Tg + 40 ° C

The temperature of the second heat roller in the heat treatment step satisfies the following condition (2), and provides a method for producing a polyester composite yarn excellent in stretchability and drape property using a partially stretched yarn.

(2) Polyester Tg + 25 ° C? Temperature of the second heat roller? Polyester Tg + 75 ° C

Also disclosed is a polyester composite yarn excellent in stretchability and drape property using a partially stretched yarn, which is produced by the above-described production method.

The present invention also provides a fiber product comprising the polyester composite yarn.

The polyester composite yarn excellent in stretchability and drainage property according to the present invention as described above has a very excellent stretchability by using a partially drawn yarn as a latent housing by examination and by using a polyester partially drawn yarn as an effective yarn.

In addition, the self-stretching property is imparted through the partial stretching examination and the heat treatment to the effect yarn, thereby improving the drape property of the fabrics such as fabrics.

In addition, it has an effect that it can be applied to various textile products with excellent stretchability and drape property.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a process diagram of a method for producing a polyester composite yarn according to the present invention. Fig.
Fig. 2 is a process schematic diagram of a polyester composite yarn 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 have the same reference numerals as much as 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.

FIG. 1 is a process diagram of a method for producing a polyester composite yarn according to the present invention, and FIG. 2 is a process diagram of a polyester composite yarn according to the present invention.

The polyester composite yarn excellent in stretchability and drape property using the partially stretched yarn according to the present invention is manufactured including the yarn feeding step, the stretching step, the heat treatment step, the entanglement step and the winding step as shown in FIG.

The drapery property refers to a characteristic that naturally flowing wrinkles are formed when a garment including a composite yarn is worn.

 The yarn supplying step is a high viscosity polyester copolymer having an intrinsic viscosity (IV) of 0.6 to 0.85 dl / g, which is a polyester copolymer containing 1 to 30 mol% of neopentyl glycol (NPG) A polyester copolymer containing 1 to 20 mol% of isophthalic acid (IPA) and 1 to 10 mol% of a bisphenol A modified product and a low viscosity polyester having a low viscosity of 0.4 to 0.55 dl / g, (Partial Oriented Yarn: POY) to the effect company (100) and the Polyester Partially Oriented Yarn (POY) to the effect yarn (200). It can be prepared and supplied to the winding roller in advance.

Alternatively, the polyester composite yarn of the present invention may be manufactured by further including a spinning step of spinning the yarn and the yarn before the feeding 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 higher the intrinsic viscosity difference between the high viscosity polyester and the low viscosity polyester, the higher the stretchability due to the difference in shrinkage due to the difference in shrinkage. However, the higher the difference in physical properties, the more the difference in thermal rheology Is increased, so that the droplet trajectory of the nozzle surface is increased, so that the stability of the cross-sectional shape may be deteriorated.

When the intrinsic viscosity difference between the two polymers of the high viscosity polyester and the low viscosity polyester is less than 0.1, it is difficult to form the crimp due to the difference in shrinkage between the two polymers, so that the stretchability may be deteriorated. Therefore, intrinsic viscosity of the high viscosity polyester and low viscosity polyester It is preferable that the difference is 0.1 to 0.3 dl / g.

The effect yarn may be a polyester partially drawn polyester yarn, and a semi-dull or full dull polyester yarn drawn yarn may be used for natural luster.

As shown in FIG. 2, the elongating step is a step of elongating only the examination by stretching and heat-treating the partial stretching examination 100 through two first heat rollers 10.

The heat treatment step is a step of simultaneously relaxing the stretched yarn 100 and the non-stretched yarn 200 through a second heat roller 30 as shown in FIG. 2, The effect yarn 200 is subjected to relaxation heat treatment in the untangled state.

The overfeed rate during the relaxation heat treatment through the second heat roller 30 is preferably 0.1 to 10%. If the overfeeding rate is less than 0.1%, the internal stress is increased during the heat treatment and the low shrinkage is not achieved. If the overfeeding rate is more than 10%, the second heat roller may have a quivering phenomenon, So that a dyed sheet or the like may be generated.

It is preferable that the temperatures of the first heat roller 10 and the second heat roller 30 in the drawing step and the relaxation heat treatment step satisfy the following conditions (1) and (2).

(1) Polyester Tg + 15 ° C? Temperature of first heat roller? Polyester Tg + 40 ° C

(2) Polyester Tg + 25 ° C? Temperature of the second heat roller? Polyester Tg + 75 ° C

That is, although the glass transition temperature (Tg) of the polyester varies depending on the manufacturer, the temperature of the first heat roller 10 may be approximately 85 to 120 ° C at approximately 70 to 80 ° C, Lt; RTI ID = 0.0 > 95-155 C. < / RTI >

The temperature of the first heat roller 10 and the second heat roller 30 should be adjusted according to the polyester used.

BWS (2 g / dl in initial measurement) -4% ≤ BWS ≤ 0% after 30 minutes immersion in 100 ℃ boiling water under the same conditions as above, BDS, which is the shrinkage ratio after the heat treatment for the minute dryness, has a physical property of -16% < = BDS < = 0 in the initial measurement (2 g / De in the measurement).

That is, the shrinkage effect in the relaxation heat treatment is produced from a fabric such as a fabric, a knitted fabric, and a nonwoven fabric, and is given a spontaneous elongation property of -1 to -8% at the time of post-processing, And after stretching to give the physical properties of a full drawing yarn (FDY), it is subjected to a relaxation heat treatment in the second heat roller at the same time as the effect yarn, thereby having excellent drape property.

The intermingling step is a step of interlacing the relaxed heat-treated effect yarn and the examination through air entanglement, and the composite yarn can be manufactured by combining the effect yarn with the effect yarn through a general air entanglement device 50. [

The winding step may be a step of winding the entangled composite yarn through the winding roller 70 or the like as shown in Fig.

The polyester composite yarn having excellent stretchability and drape property using the partially stretched yarn of the present invention can be produced through the above-described production method.

The polyester composite yarn excellent in stretchability and drape property using a partially stretched yarn of the present invention can be used in various textile products with excellent stretchability and excellent drapery property.

Hereinafter, embodiments of a method for producing a polyester composite yarn having excellent stretchability and drainage property using a partially stretched yarn according to the present invention will be described, but the present invention is not limited thereto.

Examples 1 to 4

The high-viscosity polyester and the low-viscosity polyester were used as a side-by-side type lathe, which was a latent portion of the lathe, and the polyester partially drawn portion was used as an effective yarn. After the examination was extended, a relaxation heat treatment was performed using a second heat roller as in the case of the effect.

The high viscosity polyester may be a polyester copolymer containing neopentyl glycol (NPG) or a polyester copolymer containing 1 to 20 mol% of isophthalic acid (IPA) and 1 to 10 of bisphenol A (BPA) Were used.

The relaxed heat-treated effect yarn and the yarn were wound together by air entanglement and wound up to produce a polyester composite yarn excellent in stretchability and drainage property using the partially drawn yarn according to the present invention.

Table 1 shows compositions and production conditions for the evaluation and effect yarns of Examples 1 to 4.

Comparative Example 1

The test was made in the same manner as in the above example, but the examination was made into a general company, and both the examination and the effect were heat treated.

Table 1 shows compositions and conditions for the above examination and effect yarns.

Comparative Example 2

The high shrinkage polyester yarn was prepared in the same manner as in Comparative Example 1, except that the high shrinkage polyester yarn was used.

Table 1 shows compositions and conditions for the above examination and effect yarns.

Comparative Example 3

The test sample was prepared in the same manner as in the above Example, but the test was extended and intertwined with the test compound

Table 1 shows compositions and conditions for the above examination and effect yarns.

division Example 1 Example 2 Example 3 Example 4 Comparative Example 1 Comparative Example 2 Comparative Example 3 judge
High IV 0.7 0.68 0.68 0.65 0.64 0.68 0.68
NPG
10 mol% IPA 8 mol%
BPA 5 mol% NPG
13 mol% NPG 10 mol% Low IV 0.55 0.55 0.45 0.45 0.5 Effectiveness Puddle Puddle Semedar Semedar Semedar Semedar Puddle Over feed rate 0.1% 3% 5% 10% 0% 0% 0% The first heat roller temperature (占 폚) 85 90 100 120 200 200 100 Second heat roller temperature (占 폚) 110 120 130 140 - - -

◈ Evaluation of physical properties of examples and comparative examples

1. Property evaluation method

* Shrinkage Difference: The shrinkage difference is obtained by the following equation due to the difference in shrinkage ratio between the examination and effect shrinkage.

Contraction difference = number of judgments (%) - exports rate of effect companies (%)

Intrinsic Viscosity (IV): Each polymer was sufficiently dissolved in 1% concentration of ortho-chlorophenol at 120 ° C, and then measured using a Ubbelohde viscometer in a thermostatic chamber at 30 ° C.

* Crimp ratio (Tc,%): The crimp ratio of the test is measured. Take a sample of 1 meter long by 3,000 ÷ fineness divided by 4 length. When this sample is subjected to crimp development during hot water treatment, it is treated for 20 minutes in hot water (100 ° C) under a load of 1 g, which is a load that does not cause entanglement of each fiber strand, and then the load is removed. And dried naturally. After natural drying, apply 6g of load to the sample, measure 1 minute and then length L1, load 600g, and measure length L2 after 1 minute. The crimp ratio is obtained by the following formula as follows.

Crimp ratio (%) = ((L2-L1) / L2) X100

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

* Drapery and elasticity evaluation: Relative sensory evaluation by 5 experts

division Example 1 Example 2 Example 3 Example 4 Comparative Example 1 Comparative Example 2 Comparative Example 3 Contraction 16 15 19 22 8 16 10 Crimping rate (%) 42 35 45 48 0 0 35 Fairness (%) 94 96 93 85 94 95 93 Postgraph ○ ~ ◎ ○ ~ ◎ ◎ ◎ △ - ○ ○ ~ ◎ × ~ Δ elasticity ○ ~ ◎ ○ ~ ◎ ◎ △ × × ○ ?: Very excellent,?: Excellent,?: Fair, X: poor

As shown in Table 2, Examples 1 to 4, which are polyester complex yarns excellent in stretchability and drainage property using the partially stretched yarn of the present invention, are superior in drape resistance to Comparative Examples 1 and 3, It can be seen that the stretchability is excellent in Examples 1 and 2.

Comparative Example 2 had drape property but had insufficient stretchability and Comparative Example 3 had stretchability but insufficient drapery property. Examples 1 to 4 of the polyester complex societies of the present invention were excellent in drape property and stretchability, .

DESCRIPTION OF THE RELATED ART [0002]
100: Screening 200: Effectiveness
10: first heat roller 30: second heat roller
50: interlocking device 70: take-up roller

Claims (8)

A polyester copolymer containing 1 to 30 mol% of neopentyl glycol (NPG) as a high viscosity polyester copolymer having an intrinsic viscosity (IV) of 0.6 to 0.85 dl / g, or a polyester copolymer containing isophthalic acid IPA) and 1 to 10 mol% of a bisphenol A-modified product and a low viscosity polyester having a density of 0.4 to 0.55 dl / g are used as sidebish type pottery housings A step of supplying the yarn to the polyester yarn supplier as an effect yarn by examining the partially drawn yarn;
A stretching step of stretching the screen through a first heat roller;
A heat treatment step of simultaneously performing relaxation heat treatment of the inspection and the effect yarn through the second heat roller;
An interlacing step of concatenating the relaxed heat-treated effect yarn and the judging yarn through air entanglement; And
And a winding step of winding the entangled composite yarn,
In the heat treatment step, the overfeed rate of the second heat roller is 0.1 to 10%
Wherein the temperature of the first heat roller in the stretching step satisfies the following condition (1), and the temperature of the second heat roller in the heat treatment step satisfies the following condition (2): A method for producing a polyester composite yarn excellent in stretchability and drape property.
(1) Polyester Tg + 15 ° C? Temperature of first heat roller? Polyester Tg + 40 ° C
(2) Polyester Tg + 25 ° C? Temperature of the second heat roller? Polyester Tg + 75 ° C The method according to claim 1,
The method of manufacturing a polyester composite yarn according to claim 1, wherein the yarn is semi-dull or full-dull. The method according to claim 1,
And a spinning step prior to the feeding step, wherein the spinning step further comprises a spinning step before the feeding step. delete delete delete A polyester composite yarn excellent in stretchability and drape property using a partially stretched yarn, which is produced by the production method of any one of claims 1 to 3. A fiber product comprising the polyester composite yarn of claim 7.

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