KR20170057070A - High Gravity Polyester Composite Yarn and Fabric - Google Patents

Abstract

The present invention relates to a high specific gravity polyester composite yarn and a fabric. The polyester composite yarn is produced by using side-by side latent and potential crimped yarn made of high viscosity polyester and low viscosity polyester as a core yarn as well as a high specific gravity polyester yarn as an effect yarn. The high specific gravity polyester yarn formed by adding barium sulfate (BaSO_4) and tungsten carbide (WC) into a polyester resin. The content of barium sulfate is 4-7 wt% of the weight of the polyester resin, whereas that of tungsten carbide is 0.5-1.5 wt% of the weight of the polyester resin.

Description

{High Gravity Polyester Composite Yarn and Fabric}

The present invention relates to a high-mix polyester composite yarn and a fabric, and more particularly, to a high-mix polyester composite yarn and a fabric which are superior in drapery when formed into a fabric by a polyester composite yarn having a higher ratio than a general polyester composite yarn .

Drapery castle means natural and beautiful wrinkle that occurs when clothes are worn. It started with the artistic fabric of the cloth and the garment which can be loosely applied to the body with a piece of cloth without sewing. The drapery- By expressing the beauty that appears in beauty and movement through cloth, it pursues the harmony of overall proportion and balance.

In addition, it is one of the most important characteristics of textile fabrics for experts in the field of fashion, because the aesthetic effect can be expressed through the drapery ruffle according to the texture of the fabric rich in the simplicity of the planar construction.

Drapery property is generally influenced by elasticity, flexibility and specific gravity of fiber properties. Silk fabrics have excellent drape properties because of their excellent flexibility. Rayon fabrics have a high specific gravity of rayon fibers It has high drapery property.

In general, polyester fibers, which are synthetic fibers most commonly used in garments, have higher drape properties than synthetic fibers having different specific gravity. Therefore, there is a problem in that drapeability is lower than that of rayon fibers having a specific gravity of about 1.5.

Polyester fibers having a higher specific gravity than that of the polyester fibers having a specific gravity of 1.38 have been developed as described above. Korean Patent Registration No. 294901 discloses a technique for producing high boiling yarn using a high-boiling inorganic material for a core portion and a polyester or polyamide for a sheath portion. In this method, however, There is a problem that the fiber shape is uneven and the specific gravity is not uniform.

Korean Patent No. 1143721 discloses an invention for producing polyester multifilament using a polyester solid state polymer chip containing barium sulphate as a method for producing a high-boiling polyester multifilament, There is a problem in that the physical properties of the polyester are deteriorated by the excessive amount of barium sulphate because 20 to 30 parts by weight are included in 100 parts by weight of the chip and excessive barium sulphate has a problem that the spinning speed is increased in the spinning process and the fairness is low .

In addition, Korean Patent No. 1143721 is manufactured for fishing nets and ropes, which is not suitable for clothing. In order to satisfy various consumers' needs, it is urgent to develop a composite yarn having various functions and forms.

The present invention has been made to solve the above-mentioned problems of the prior art, and it is an object of the present invention to provide a polyester resin which is suitable for clothing and which has excellent high drapery property by using polyester fiber of high specific gravity containing barium sulfate and tungsten carbide To provide a polyester composite yarn.

It is another object of the present invention to provide a high-yield polyester composite yarn which is formed by joining a latent sheathing yarn and a high-shear polyester yarn and has excellent stretchability.

It is also an object of the present invention to provide a fabric comprising the high-shear polyester composite yarn.

The present invention relates to a process for producing a polyester composite yarn, which comprises the steps of: preparing a polyester blend yarn by using a high-viscosity polyester yarn and a low-viscosity polyester yarn as a warp yarn, Wherein the barium sulfate is contained in an amount of 4 to 7 wt% of the weight of the polyester resin, 0.5 to 1.5 wt% of the weight of the polyester resin in the tungsten carbide (barium sulfate), and the tungsten carbide (WC) By weight based on the total weight of the polyester fiber.

Also, the present invention provides a high-shear polyester composite yarn characterized in that the size of barium sulfate (BaSO4) and tungsten carbide (WC) is 0.05 to 1 mu m.

Also, the high-boiling polyester yarn has a specific gravity of 1.5 to 1.7.

Also, the latent polyester fiber yarn is 80 to 150 denier, and the high-boiling polyester yarn is 40 to 120 denier.

Further, the present invention provides a fabrics characterized by comprising the above-mentioned high-boiling polyester composite yarn.

As described above, the high-shear polyester composite yarn according to the present invention is produced by mixing a high-shear polyester yarn containing barium sulphate and tungsten carbide having a high specific gravity and a high shear polyester composite yarn There is an effect to provide.

In addition, the high-shear polyester composite yarn of the present invention has an excellent drainage property as a rayon fabric when formed into a fabric.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view of latent housings of various shapes used in a high-shear polyester composite yarn according to the present invention. FIG.

Hereinafter, a preferred embodiment of the present invention will be described in detail. 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.

In the present invention, the term "fabric" is used to mean a fabric woven with a weaving machine, a knitting machine, a nonwoven fabric knitted or knitted with a long fiber or a short fiber, and a nonwoven fabric formed by a mechanical or chemical method without being woven or braided.

The present invention relates to a high-boiling polyester composite yarn formed by using a high-viscosity polyester yarn and a low-viscosity polyester yarn as a warp yarn.

The latent cage used for examination in the present invention is formed of a high viscosity polyester having an intrinsic viscosity (IV) of 0.6 to 0.8 dl / g and a low viscosity polyester having an intrinsic viscosity (IV) of 0.4 to 0.6 dl / g, It would be desirable to have a stretch ratio of 10% or more.

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 potential housing is a side-by-side type formed of a high-viscosity polyester (100) and a low-viscosity polyester (200) and is a side-by-side type of circular shape as shown in Figs. 1 (a) (C) of Fig. 2, a potato harvested as a peanut-shaped side-by-side type could be used.

It is preferable that the side-by-side type potential barriers formed of the high-viscosity polyester and the low-viscosity polyester are multifilament yarns having a fineness of 80 to 180 denier and 20 to 80 filaments, The single fiber fineness of the potential housing is preferably 1 to 8 denier, more preferably 2 to 6 denier.

The high-shear polyester yarn is a circular yarn formed of polyester yarn containing barium sulphate (BaSO4) and tungsten carbide (WC) in a polyester resin.

As described above, the high-boiling polyester yarn of the present invention containing barium sulfate and tungsten carbide can be produced by a general method for producing a multifilament polyester yarn.

For example, the barium sulfate and tungsten carbide may be added to the polyester masterbatch, followed by fiberization such as a spinning step. After producing the polyester chip containing barium sulfate and tungsten carbide, The masterbatch may be prepared via an ester chip and be prepared as a yarn.

If the sizes of the barium sulfate and tungsten carbide are too large, the wear rate of the mechanical device in the spinning step can be increased. Therefore, the size of the barium sulfate and the tungsten carbide is preferably 0.05 to 1 탆.

In addition, the high-boiling polyester yarn to be produced is preferably multifilament yarn having a fineness of 40 to 120 denier and 30 to 80 filaments.

The high-boiling polyester yarns of the present invention have a single yarn fineness of 0.5 to 5 denier, more preferably of 1 to 4 denier, and the ratio of 75D / 72F to 120D / 36F.

As described above, the high-shear polyester composite yarn according to the present invention, which is formed by using a side-by-side type pottery bar made of high-viscosity polyester and low-viscosity polyester as a result of screening and using high- Or air entanglement to form a composite yarn.

In addition, both the pottery stock and the super high tenacity polyester yarn are manufactured as partially stretched yarn (POY), and then the high-shear polyester composite yarn according to the present invention is produced through the stretching, the heat treatment and the folding process It will be possible.

And the other one is a partially drawn yarn, and the partially drawn yarn is subjected to an elongation and heat treatment process, and the drawn yarn is passed through a bypass suto and then two It may be possible to manufacture a composite yarn by a process in which the yarn is folded in the yarn manufacturing process.

As described above, the high-shear polyester composite yarn according to the present invention can be produced through processes such as stretching, heat treatment, yarn winding, and winding after preparation and sieving, respectively. As shown in FIG.

The high-shear polyester composite yarn of the present invention may be manufactured as a composite yarn of various forms and various functions depending on the intended use and purpose.

As described above, the fabric made from the high-shear polyester composite yarn according to the present invention is suitable for clothing because it has a high specific gravity and natural wrinkles are formed and drapery property is excellent.

Hereinafter, examples of the method for producing the high-shear polyester composite yarn according to the present invention are shown, but the present invention is not limited to the examples.

Example  One

The high viscosity polyester and the low viscosity polyester were used as the examination, and the partly drawn yarn which was the potential side of the side side type was used as the examination. The high yarn polyester yarn was used as the superficial yarn, Followed by annealing at 200 ° C for annealing, heat treatment, and air entangling to produce a high-shear polyester composite yarn according to the present invention.

The high-boiling polyester yarn contained 3.5 wt% of barium sulphate having a particle size of 0.5 mu m and 1.0 wt% of tungsten carbide having a particle size of 0.5 mu m in a polyester resin, and then the spinning composition was produced in the same manner as the spinning process of general multifilament The spinning process was carried out to produce a polyester fiber having a high specific gravity of 75D / 72F.

The intrinsic viscosity (IV) of the high viscosity polyester and the low viscosity polyester and the specific gravity of the high ratio polyester yarn are shown in Table 1.

Example 2

The high viscosity polyester and the low viscosity polyester were used for the inspection and the double yarn as the potential side of the side side type was used as the examination, and the high yarn polyester yarn was used as the new yarn. And the superabsorbent yarn is stretched at a stretching ratio of about 4.3, followed by stretching and heat-treating at a temperature of 200 ° C, and the yarn is folded in a yarn entangling step together with the above examination to produce a high-shear polyester composite yarn according to the present invention Respectively.

The high-boiling polyester yarn contains 0.5 wt% of barium sulfate and 0.5 wt% of tungsten carbide in 0.5 wt% of the polyester resin, and after the spinning composition is manufactured, the spinning process is performed in the same manner as the spinning process of general multifilament To prepare a high-shear polyester yarn of 100D / 50F multifilament yarn.

The intrinsic viscosity (IV) of the high viscosity polyester and the low viscosity polyester and the specific gravity of the high ratio polyester yarn are shown in Table 1.

Comparative Example

The polyester composite yarn was produced in the same manner as in Example 1 except that polyester yarn as a multifilament yarn of general 75D / 72F as a warp yarn was used.

The intrinsic viscosity (IV) of the high viscosity polyester and the low viscosity polyester and the specific gravity of the high ratio polyester yarn are shown in Table 1.

division
Example 1 Example 2 Comparative Example 1 Seaweed specific gravity 1.55 1.52 1.38 judge High IV 0.70 0.65 0.70 Low IV 0.55 0.52 0.55 Elasticity% 20 18 20

The drape property, strength and elongation of the polyester composite yarns of Examples 1 and 2 and Comparative Example prepared as described above were evaluated. The drape resistance was evaluated by knitting a polyester composite yarn of Examples 1 and 2 and Comparative Example to make knitted fabric.

* Draperity: The relative sensory evaluation was carried out by five clothing fashion experts. The average sensory evaluation was performed with 10 points for the same drapery performance and the difference for the drapery as compared to the rayon fabric.

Strength and elongation: evaluated according to ASTM 790.

division Example 1 Example 2 Comparative Example Drapery 8.4 8.4 4.3 Strength (g / d) 3.1 3.2 3.5 Shinto (%) 24 23 26

As shown in Table 1, it can be seen that Examples 1 and 2 which are high-boiling polyester complexes according to the present invention have no difference in strength and elongation from the comparative examples as in Comparative Example, but drapeability of the fabric is far superior to Comparative Example .

100: high viscosity polyester 200: Low viscosity polyester

Claims (5)

A side-by-side type potential housing formed of a high-viscosity polyester and a low-viscosity polyester was examined and a polyester composite yarn was formed using a high-
Wherein the high-boiling polyester yarn is formed of polyester yarn containing barium sulfate (BaSO4) and tungsten carbide (WC) in a polyester resin, wherein the barium sulfate is 4 to 7% by weight of the polyester resin, Wherein the polyester resin is contained in an amount of 0.5 to 1.5% by weight based on the weight of the polyester resin. The method according to claim 1,
Wherein the size of the barium sulfate (BaSO4) and the tungsten carbide (WC) is 0.05 to 1 占 퐉. The method according to claim 1,
Wherein the high-boiling polyester yarn has a specific gravity of 1.5 to 1.7. The method according to claim 1,
Wherein the latent capacity is 80 to 150 denier and the weight ratio of polyester fiber is 40 to 120 denier. A fabric characterized by comprising the high-shear polyester composite yarn of any one of claims 1 to 4.

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