KR20040049034A - Method of producing polyester air-textured yarn with high-thermal-insulation and light-weight - Google Patents

Method of producing polyester air-textured yarn with high-thermal-insulation and light-weight Download PDF

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Publication number
KR20040049034A
KR20040049034A KR1020020076203A KR20020076203A KR20040049034A KR 20040049034 A KR20040049034 A KR 20040049034A KR 1020020076203 A KR1020020076203 A KR 1020020076203A KR 20020076203 A KR20020076203 A KR 20020076203A KR 20040049034 A KR20040049034 A KR 20040049034A
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South Korea
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air
yarn
polyester
hollow
texturing
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KR1020020076203A
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Korean (ko)
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KR100464834B1 (en
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송민규
한선주
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한국섬유개발연구원
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Priority to KR10-2002-0076203A priority Critical patent/KR100464834B1/en
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    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
    • D02G1/16—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using jets or streams of turbulent gases, e.g. air, steam
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/24—Formation of filaments, threads, or the like with a hollow structure; Spinnerette packs therefor
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
    • D01F6/62—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyesters
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
    • D02G3/04—Blended or other yarns or threads containing components made from different materials
    • D02G3/045—Blended or other yarns or threads containing components made from different materials all components being made from artificial or synthetic material
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
    • D02G3/32—Elastic yarns or threads ; Production of plied or cored yarns, one of which is elastic
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
    • D02G3/34—Yarns or threads having slubs, knops, spirals, loops, tufts, or other irregular or decorative effects, i.e. effect yarns

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Artificial Filaments (AREA)

Abstract

PURPOSE: A manufacturing method of polyester air textured yarn is characterized by controlling pneumatics properly in air-texturing, not passing through a heat setting process and reducing a change of hollow ratio of hollow fiber. The polyester air textured yarn is characterized by having excellent thermo-keeping property and being lightweight. Drawn polyester fiber is capable of weaving textile having soft touch. CONSTITUTION: Polyester air textured yarn is obtained by: preparing polyester hollow fiber as core yarn; preparing drawn polyester fiber as sheath yarn; and then air-texturing the fibers with 6-9bar of pneumatics. A discharge velocity of the air textured yarn is 350-400m/min.. Over feed ratio of the sheath yarn on the core yarn is 10-12%. Single fineness of the drawn polyester fiber is 0.3-0.6denier.

Description

보온성 및 경량감이 우수한 폴리에스테르 에어텍스쳐사의 제조방법 {Method of producing polyester air-textured yarn with high-thermal-insulation and light-weight}Method of producing polyester air-textured yarn with excellent heat insulation and lightness {Method of producing polyester air-textured yarn with high-thermal-insulation and light-weight}

본 발명은 폴리에스테르 중공섬유를 심사로, 연신 폴리에스테르섬유를 초사로 하여 에어텍스쳐링에 의해 보온성 및 경량감이 우수한 에어텍스쳐사를 제조하는 방법에 관한 것이다.The present invention relates to a method for producing an air-textured yarn excellent in heat retention and lightness by air texturing by using polyester hollow fiber as a screen and elongated polyester fiber as a super yarn.

최근의 패션 트랜드는 경량감과 부드러움으로서 다양한 방법을 이용하여 경량화를 위한 연구개발이 이루어지고 있으며, 특히 중공사의 개발 및 용도전개가 활발하게 이루어지고 있다. 중공사는 사내부의 중공으로 인해 보온성 및 경량성이 있고 가공후 반발탄력성 및 벌키성이 우수한 소재로써 경량감이 있고 부드러운 직물을 제조할 수 있는 소재로 추천되고 있다.The recent fashion trends are lightweight and soft, research and development for weight reduction using a variety of methods, in particular, the development of hollow yarns and the development of applications are actively made. Hollow yarn is recommended as a material capable of manufacturing light fabrics and soft fabrics as a material having excellent thermal insulation and light weight and excellent resilience and bulkiness after processing.

상기 중공사를 직물화하는 경우에는 원사상태의 중공율을 후공정에 까지 얼마나 유지할 수 있느냐가 직물의 경량감과 부드러움의 척도인데 일반적으로 사가공, 제직준비, 제직, 염색가공을 진행하면서 중공사가 장력과 열을 받아 중공이 깨어지거나 수축하게 된다. 일반적인 교락방법에 의한 교락시에는 높은 열히터온도 등에 의해 중공사의 중공이 소멸되는 현상이 발생하였다. 한국특허 제1998-0000013호는 교락에 의해 벌키한 혼섬사를 제공하고 투톤발현이 가능하도록 하는 데 발명의 핵심을 두어 폴리에스터중공사와 폴리에스터 반연신사를 에어텍스쳐링처리에 의해 방모조의 이수축혼섬사를 제공하고 있으나 이 또한 중공사의 중공의 형태를 유지하는 것이 어렵고 경량감이나 부드러움을 제공하는데는 부적합한 단점이 있었다.In the case of weaving the hollow fiber, how long the hollow ratio of the yarn state can be maintained to the post process is a measure of the lightness and softness of the fabric. In general, the hollow yarn is tensioned during the processing, weaving preparation, weaving, and dyeing. Overheating causes the hollow to break or shrink. In the entanglement by the common entanglement method, the hollow fiber disappears due to high heat heater temperature. Korean Patent No. 1998-0000013 has the core of the invention to provide bulky blended yarns by entanglement and to make two-tone expression possible. Although it provides a thread, this also has a disadvantage of being difficult to maintain the hollow form of hollow yarns and to provide a light weight or softness.

따라서 본 발명은 상기한 바와 같은 선행기술의 제반 문제점을 해소하여 중공사의 중공율을 에어텍스쳐링 후에도 유지할 수 있는 보온성과 경량감이 우수한 폴리에스테르 에어텍스쳐사의 제조방법을 제공하는 것을 기술적 과제로 한다.Therefore, the present invention is to solve the problems of the prior art as described above to provide a method of manufacturing a polyester air-textured yarn excellent in thermal insulation and light weight that can maintain the hollow ratio of the hollow fiber even after air texturing.

상기한 과제를 해결하기 위하여 본 발명자는 기존의 교락을 개선하여 에어텍스쳐링시의 공기압을 조절하고, 히트세팅공정을 거치지 않게 하면 심사로 제공되는 중공사의 중공의 변형율을 최대로 감소시켜 제조되는 에어텍스쳐사의 경량감과 부드러움을 향상시킬 수 있다는 것을 알게 되어 본 발명을 완성하게 된 것이다.In order to solve the above problems, the present inventors improve the existing entanglement to adjust the air pressure during air texturing, and if not subjected to the heat setting process, the air texture produced by reducing the strain of the hollow yarn provided by the screening to the maximum. The present invention is completed by knowing that the lightness and softness of the yarn can be improved.

제1도는 본 발명인 공기압 6바로 에어텍스쳐링하여 제조된 폴리에스테르 에어텍스쳐사의 측면을 찍은 확대사진이다.1 is an enlarged photograph of a side surface of a polyester air texture yarn manufactured by air texturing with the air pressure 6 bar of the present invention.

제2도는 본 발명인 공기압 6바로 에어텍스쳐링하여 제조된 폴리에스테르 에어텍스쳐사의 단면을 찍은 전자주사현미경 사진이다.2 is an electron scanning microscope photograph of a cross section of a polyester air texture yarn manufactured by air texturing with the air pressure 6 bar of the present invention.

제3도는 본 발명인 공기압 7바로 에어텍스쳐링하여 제조된 폴리에스테르 에어텍스쳐사의 단면을 찍은 전자주사현미경 사진이다.3 is an electron scanning microscope photograph of a cross section of a polyester air texture yarn manufactured by air texturing with a bar pressure of 7 according to the present invention.

제4도는 본 발명인 공기압 8바로 에어텍스쳐링하여 제조된 폴리에스테르 에어텍스쳐사의 단면을 찍은 전자주사현미경 사진이다.4 is an electron scanning microscope photograph of a cross section of a polyester air texture yarn manufactured by air texturing with an air pressure of 8 bar of the present invention.

제5도는 본 발명인 공기압 9바로 에어텍스쳐링하여 제조된 폴리에스테르 에어텍스쳐사의 단면을 찍은 전자주사현미경 사진이다.5 is an electron scanning microscope photograph of a cross section of a polyester air texture yarn manufactured by air texturing with the air pressure of 9 bar of the present invention.

제6도는 공기압 10바로 에어텍스쳐링하여 제조된 폴리에스테르 에어텍스쳐사의 단면을 찍은 전자주사현미경 사진이다.6 is an electron scanning microscope photograph of a cross section of a polyester air texture yarn manufactured by air texturing at 10 bar of air pressure.

제7도는 공기압 12바로 에어텍스쳐링하여 제조된 폴리에스테르 에어텍스쳐사의 단면을 찍은 전자주사현미경 사진이다.7 is an electron scanning microscope photograph of a cross section of a polyester air texture yarn manufactured by air texturing at 12 bar air pressure.

제8도는 에어텍스쳐링공정을 하지 않은 중공사의 단면을 찍은 전자주사현미경 사진이다.8 is an electron scanning microscope photograph of a cross section of a hollow yarn not subjected to an air texturing process.

그러므로 본 발명에 의하면 폴리에스테르 에어텍스쳐사를 제조하는 방법에 있어서, 폴리에스테르 중공섬유를 심사로 제공하고 연신 폴리에스테르섬유를 초사로 제공하면서 6∼9 바의 공기압력으로 에어텍스쳐링을 하는 것을 특징으로 하는 보온성 및 경량감이 우수한 폴리에스테르 에어텍스쳐사의 제조방법이 제공된다.Therefore, according to the present invention, the method for producing a polyester air texturing yarn, characterized in that the air texturing at an air pressure of 6 to 9 bar while providing a polyester hollow fiber as a screening and providing a stretched polyester fiber as a super yarn Provided is a manufacturing method of polyester air texture, which is excellent in heat retention and lightness.

이하 도면을 참고하여 본 발명을 보다 상세히 설명하기로 한다.Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

본 발명인 폴리에스테르 에어텍스쳐사는 심사로써 폴리에스테르 중공섬유를, 초사로써 단사섬도가 0.3∼0.6데니아의 연신 폴리에스테르섬유를 사용하여 에어텍스쳐링에 의해 심사외부에 초사를 커버링하여 제조되는 것이다.The polyester air texture yarn of the present invention is produced by covering the yarns on the outside of the yarns by air texturing using a polyester hollow fiber as the screening, and a stretched polyester fiber having a single yarn fineness of 0.3 to 0.6 denier as the yarns.

본 발명에서는 폴리에스테르 중공섬유를 심사로, 연신폴리에스테르섬유를 초사로 제공하여 심사로 사용되는 폴리에스테르 중공섬유는 제1공급 로울러에서 8-15% 수준의 오버피드(Overfeed)율로, 초사로 사용되는 단사데니어 0.3∼0.6 데니아의 폴리에스테르섬유를 20-25%의 오버피드(Overfeed)율로 공급한다. 서로 다른 오버피드율로 공급되는 심사와 초사는 에어텍스쳐링 부에서 압축공기에 의한 난류로 인해 심사주위로 초사는 루프(Loop)를 형성시키게 되어 도 1에 나타난 바와 같이 초사에 의해 피복된 에어텍스쳐사가 되는 것이다. 기존의 공정에서는 일반적으로 에어텍스쳐링을 한 후 히트셋팅구역(Heat setting zone)에서 에어텍스쳐사의 루프형태를 안정화시키는데, 히트세팅을 하면 오히려 루프 발현 효과가 줄고, 중공률이 상당히 감소하는 경향이 있으므로 본 발명의 공정에서는 중공률의 유지를 위해 열고정을 행하지 않는다.In the present invention, polyester hollow fiber is used as the screening, stretched polyester fiber is used as the screening, and the polyester hollow fiber used as the screening is used as the superfeed rate at an overfeed rate of 8-15% in the first feed roller. Single yarn denier 0.3 to 0.6 denier polyester fiber is supplied at an overfeed rate of 20-25%. Screening and weaving supplied at different overfeed rates causes the yarn to form a loop around the screening due to turbulent flow of compressed air in the air texturing unit, as shown in FIG. 1. Will be. In the conventional process, air texture is generally stabilized in the heat setting zone after the air texturing, but heat setting tends to reduce the loop expression effect and significantly decrease the hollow ratio. In the process of the invention, no heat setting is performed to maintain the hollow ratio.

상기 에어텍스쳐링과정에서 공기압은 6 ∼ 9 바(bar)로 하는 것이 바람직한데 6바 미만의 공기압력에서는 심사의 주변에 초사가 에어텍스쳐링되지 못하며, 10바를 초과하는 경우에는 에어텍스쳐링에 의한 장력이 커서 심사의 중공의 변형률이 커지는 문제점이 발생하였다. 도 8에서와 같이 에어텍스쳐링을 하지 않은 중공사는 사내부의 중공의 형태가 그대로 유지되나 도 6이나 도7과 같이 10바 또는 12바의공기압력으로 에어텍스쳐링하는 경우에는 사내부의 중공의 변형이 크게 나타났다.In the air texturing process, the air pressure is preferably set to 6 to 9 bar. If the air pressure is less than 6 bar, the yarn is not air-texturized around the screening, and if it exceeds 10 bar, the tension due to air texturing is large. A problem arises in that the hollow strain of the screening increases. As shown in FIG. 8, the hollow yarns without air texturing remain intact, but when the air texturing is performed at an air pressure of 10 bar or 12 bar as shown in FIGS. 6 and 7, It appeared greatly.

본 발명에서 에어텍스쳐사의 방출속도는 350m/분으로, 초사를 심사의 공급속도보다 10 ∼ 12%정도 빠르게 공급하여 오버피드(over feed)하는 것이 바람직 한데 초사에 대한 심사의 오버피드율이 10% 이하이면 루프가 형성되지 않고, 심사와 초사의 에어텍스쳐링이 형성되지 않으며, 오버피드율이 12% 이상이면 공기압이 과대해져서 루프효과가 과대해지므로 에어텍스쳐사의 품질이 불량해지고 후공정 진행시 사절 등 문제가 발생하게 된다.In the present invention, the release rate of the air texture yarn is 350m / min, it is preferable to feed the yarn by about 10 to 12% faster than the feed rate of the screening (over feed), but the overfeed rate of the screening for the yarn is 10% If it is below, no loop is formed, and the air texturing of screening and super yarn is not formed. If the overfeed rate is 12% or more, the air pressure becomes excessive and the loop effect becomes excessive, so the quality of air texture yarn is poor and the thread trimming is performed during the post process. Problems will arise.

도 8에서는 에어텍스쳐링을 하지 않은 상태의 중공사 단면을 찍은 사진으로서 중공의 형태가 잘 유지되고 있다. 그러나 에어텍스쳐링시 공기압이 높아지면 초사의 압력에 의해 중공사의 중공이 형태변형이 생기고 중공율이 낮아지게 된다. 본 발명의 공기압이 6바인 경우에는 도 2에서 나타나는 바와 같이 에어텍스쳐링에 의한 중공율의 변화가 적어 최종제품인 에어텍스쳐사의 보온성, 경량감 및 부드러운 감촉이 우수하게 발현될 수 있다.In FIG. 8, the hollow shape of the hollow fiber cross section without air texturing is well maintained. However, if the air pressure increases during air texturing, the hollow yarns undergo morphological deformation and the hollow ratio decreases due to the pressure of the yarn. When the air pressure of the present invention is 6 bar, as shown in FIG. 2, the change in the hollow ratio due to air texturing is less, and thus, the warmth, lightness, and soft texture of the air texture company, which is the final product, may be excellently expressed.

이하 다음의 실시예에서는 폴리에스테르 에어텍스쳐사를 제조하는 비한정적인 예시를 하고 있다.In the following examples, non-limiting examples of producing polyester air texture yarns are given.

[실시예 1]Example 1

폴리에스테르 중공필라멘트 75d/24f를 심사로, 폴리에스테르 연신 필라멘트 100d/192f를 초사로 사용하여 에어텍스쳐링기(아이키사, 일본)에 오버피드율 12%, 방출속도 350m/분, 공기압력을 6바로 조정하여 에어텍스쳐링을 하여 175d/216f의폴리에스테르 에어텍스쳐사를 제조하였다.The polyester hollow filament 75d / 24f is used as the screening, and the polyester stretched filament 100d / 192f is used as the superfiber yarn for the air texturing machine (Aiki, Japan) with an overfeed rate of 12%, a discharge rate of 350m / min, and an air pressure of 6 bar. The air texture was adjusted to prepare a polyester air texture yarn of 175d / 216f.

제조한 폴리에스테르 에어텍스쳐사를 절단시킨 후 전자주사현미경(SEM)을 이용하여 중공사와 연신필라멘트의 단면을 찍고 면적계를 이용하여 중공사의 면적과 중공부분의 면적을 측정하여 식(1)에 의해 중공율을 계산하였다.After cutting the manufactured polyester air texture yarn, take a cross section of the hollow fiber and the drawn filament using an electron scanning microscope (SEM), and measure the area of the hollow yarn and the hollow part by using an area meter. The rate was calculated.

* 중공율 = (중공면적/사단면적) ×100* Hollow rate = (hollow area / section area) × 100

또한 제조된 에어텍스쳐사를 90m 절단한 후 그 무게를 재었다.In addition, the air texture yarn was cut after 90m was weighed.

[실시예 2∼4 및 비교예 1∼3][Examples 2 to 4 and Comparative Examples 1 to 3]

에어텍스쳐링시 공기압을 표1과 같이 변경한 것을 제외하고는 실시예 1과 동일한 방법으로 에어텍스쳐사를 제조하고 중공율과 사 무게를 측정하여 표2에 나타내었다.Except for changing the air pressure during air texturing as shown in Table 1 was prepared in the same manner as in Example 1 air texture yarns and the hollow ratio and yarn weight were measured and shown in Table 2.

공 기 압 (bar)Air pressure (bar) 실시예 2Example 2 77 실시예 3Example 3 88 실시예 4Example 4 99 비교예 1Comparative Example 1 00 비교예 2Comparative Example 2 1010 비교예 3Comparative Example 3 1212

중공율 (%)Hollowness (%) 무게(mg/90m)Weight (mg / 90m) 실시예 1Example 1 17.317.3 182.98182.98 실시예 2Example 2 16.116.1 183.91183.91 실시예 3Example 3 15.915.9 187.45187.45 실시예 4Example 4 16.416.4 187.96187.96 비교예 1Comparative Example 1 17.817.8 71.6771.67 비교예 2Comparative Example 2 13.813.8 187.45187.45 비교예 3Comparative Example 3 12.012.0 188.38188.38

이상 설명한 바와 같이 본 발명에 의하면 에어텍스쳐링시 공기압을 적절히 조정하고 히트세팅공정을 거치지 않게 하여 중공사의 중공율의 변화를 적게 하여 제조한 에어텍스쳐사를 사용하여 보온성 및 경량감이 우수하고 연신 폴리에스테르섬유의 루프로 인한 부드러운 촉감을 가진 직물을 제조할 수 있다.As described above, according to the present invention, by using the air texture yarn manufactured by appropriately adjusting the air pressure during air texturing and not subjecting the heat setting process to change the hollow ratio of the hollow yarns, the thermal insulation and lightness are excellent and the stretched polyester fiber It is possible to produce a fabric with a soft touch due to the loop.

Claims (3)

폴리에스테르 에어텍스쳐사를 제조하는 방법에 있어서,In the method for producing a polyester air texture yarn, 폴리에스테르 중공섬유를 심사로 제공하고 연신 폴리에스테르섬유를 초사로 제공하면서 6∼9 바의 공기압력으로 에어텍스쳐링을 하는 것을 특징으로 하는 보온성 및 경량감이 우수한 폴리에스테르 에어텍스쳐사의 제조방법.A method of manufacturing polyester air-textured yarn with excellent heat insulation and lightness, characterized by providing a polyester hollow fiber as a screening and providing stretched polyester fiber as a superfiber, and performing air texturing at an air pressure of 6 to 9 bar. 제1항에 있어서, 에어텍스쳐사의 방출속도를 350∼400 m/분 ,심사에 대한 초사의 오버피드율은 10∼12%로 하여 에어텍스쳐링하는 것을 특징으로 하는 보온성 및 경량감이 우수한 폴리에스테르 에어텍스쳐사의 제조방법.The polyester air texture with excellent thermal insulation and light weight according to claim 1, wherein the air texture is discharged at 350 to 400 m / min and the overfeed rate of the yarn against the screening is 10 to 12%. Manufacturing method. 제1항에 있어서, 초사로 제공되는 연신 폴리에스테르 섬유의 단사섬도가 0.3 ∼ 0.6데니아인 것을 특징으로 하는 보온성 및 경량감이 우수한 폴리에스테르 에어텍스쳐사의 제조방법.The single yarn fineness of the stretched polyester fiber provided by super yarn is 0.3-0.6 denier, The manufacturing method of the polyester air texture yarn excellent in heat insulation and lightness feeling of Claim 1 characterized by the above-mentioned.
KR10-2002-0076203A 2002-12-03 2002-12-03 Method of producing polyester air-textured yarn with high-thermal-insulation and light-weight KR100464834B1 (en)

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KR100821901B1 (en) * 2006-03-28 2008-04-15 주식회사 코오롱 False twisted hollow polyester yarn and a method of manufacturing the same
KR101280653B1 (en) * 2011-09-02 2013-07-01 한국섬유개발연구원 Process Of Producing Air­Textuerd Yarn Having High Hollow Maintenance

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