KR101900769B1 - Process Of Producing Reflective Fabric Having Excellent Shape Stability - Google Patents

Process Of Producing Reflective Fabric Having Excellent Shape Stability Download PDF

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KR101900769B1
KR101900769B1 KR1020170064080A KR20170064080A KR101900769B1 KR 101900769 B1 KR101900769 B1 KR 101900769B1 KR 1020170064080 A KR1020170064080 A KR 1020170064080A KR 20170064080 A KR20170064080 A KR 20170064080A KR 101900769 B1 KR101900769 B1 KR 101900769B1
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filament yarn
yarn
polyester filament
retroreflective
nylon
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Korean (ko)
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정성제
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정성제
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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/50—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads
    • D03D15/567—Shapes or effects upon shrinkage
    • D03D15/04—
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/327—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated alcohols or esters thereof
    • D06M15/333—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated alcohols or esters thereof of vinyl acetate; Polyvinylalcohol
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06Q—DECORATING TEXTILES
    • D06Q1/00—Decorating textiles
    • D06Q1/10—Decorating textiles by treatment with, or fixation of, a particulate material, e.g. mica, glass beads
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/12—Reflex reflectors

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Woven Fabrics (AREA)
  • Optical Elements Other Than Lenses (AREA)

Abstract

The present invention relates to a method for producing a retroreflective fabric excellent in shape stability. To this end, a polyester filament yarn or a nylon filament yarn whose boiling water shringkage is 5-15% is processed to have boiling water shringkage of 1-3%, and then is sized to be used as a warp yarn. The double-set nylon filament yarn or the polyester filament yarn along with a retroreflective yarn are supplied alternately as the warp yarn and a weft yarn, to be woven and refined.

Description

형태안정성이 우수한 재귀반사원단의 제조방법{Process Of Producing Reflective Fabric Having Excellent Shape Stability}BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a method of manufacturing a retroreflective fabric having excellent shape stability,

본 발명은 비수수축율이 5~15%인 공지의 나일론필라멘트사 또는 폴리에스테르필라멘트사를 가공하여 비수수축율이 1~3%가 되도록 한 후, 사이징하여 경사로 사용하고, 더블셋팅한 나일론필라멘트사 또는 폴리에스테르필라멘트사와 재귀반사원사를 교호로 경사 및 위사로 공급하여 제직하고 정련하는 것이다. In the present invention, a known nylon filament yarn or polyester filament yarn having a non-water shrinkage ratio of 5 to 15% is processed so that the non-water shrinkage ratio is 1 to 3%, and then the yarn is sized and knitted by using a double-set nylon filament yarn or poly An ester filament yarn and a reflex reflection yarn are fed alternately in an oblique and weft yarn to weave and refine.

일반적으로, 반사기능을 갖는 반사 소재는 야간에 각종 사고로부터의 예방과 안전을 도모하기 위한 안전 관련제품에 많이 사용되고 있으며, 이들의 요구도 급속히 증가하고 있는 추세이다. 예를 들어, 교통 경찰관이나 환경 미화원들이 야간에 근무나 작업을 할 경우나 노인이나 어린이들이 야간에 자동차나 기타 주행물에 노출될 경우에 운전자들이 식별을 하지 못하여 각종 인사 사고는 물론 대형 사고의 원인으로 인식되고 있고, 각종 교통표지판, 각종 운동복, 운동용구 및 가방 등의 신변 잡화품목, 군사용 인식 표시 등의 용도로도 많이 사용되고 있다.BACKGROUND ART In general, reflective materials having a reflective function are widely used in safety-related products to prevent and safeguard against accidents at night, and their demand is also rapidly increasing. For example, when a traffic police officer or an environmental cleaner is working or working at night, or when an elderly person or a child is exposed to a car or other vehicle at night, the driver can not identify the driver, And it is widely used for various traffic signs, various kinds of sportswear, personal items such as sports equipment and bags, military recognition marks, and the like.

이러한 반사용 섬유로는 필름 또는 시트 형상의 반사소재를 제조하여 이를 직물에 부착하여 사용하거나, 얇은 합성수지 필름 또는 시트의 일면에 반사막으로서 알루미늄 페이스트 코팅층을 형성하고 그 위에 글라스 비드를 투명한 폴리우레탄 혹은 접착제 등과 혼합하여 표면 코팅한 반사필름 또는 시트를 제조한 다음, 그 필름 또는 시트를 폭이 가늘게는 0.25 ~ 0.37mm, 두껍게는 3 ~ 5mm가 되도록 길게 절단(Slitting)하여 재귀반사원사를 제조하여 사용하였다. As such a semi-use fiber, a reflective material of film or sheet shape may be prepared and adhered to a fabric, or an aluminum paste coating layer may be formed on one side of a thin synthetic resin film or sheet as a reflective film and a glass bead may be formed thereon by using a transparent polyurethane or an adhesive , And then the film or sheet was slit into 0.25 to 0.37 mm in width and 3 to 5 mm in thickness to produce a retroreflective yarn .

이러한 재귀반사원사는 단독으로는 제직이 불가하여 일반섬유사와 혼방 또는 커버링사를 만들거나 교직을 하여 직물을 제조하여 사용하는데, 보다 뚜렷한 무늬의 재귀반사효과를 얻기 위해서는 교직을 하는 것이 바람직하다. 이렇게 폴리에스테르나 나일론과 같은 합성섬유사와 교직시 비수수축율이 5%를 초과하는 경우에는 비수축율 차이로 인해서 재귀반사 원사가 돌출 되어 직물상에 요철이 발생하는 문제가 발생하였다.These retroreflective yarns can not be weared singly, and they are made by using plain yarn, blend yarn or covering yarn, or by making fabrics by using a woven fabric. In order to obtain a more definite pattern of retroreflective effect, it is desirable to do teaching. When the non-shrinkage ratio exceeds 5% in the case of a synthetic fiber such as polyester or nylon, the non-shrinkage ratio difference causes the retroreflective yarn to protrude, causing irregularities on the fabric.

대한민국공개특허제10-1999-0079591호(1999년11월05일 공개)Korean Patent Publication No. 10-1999-0079591 (published on Nov. 05, 1999)

그러므로 본 발명에서는 원사간의 비수수축율의 차이로 인한 제직시 요철 발생을 방지하고, 정련시 가성소다를 사용하지 않음으로써 재귀반사원사의 손상이 없는 형태안정성이 우수한 재귀반사원단을 제공하는 것을 기술적과제로 한다.Therefore, the present invention provides a retroreflective fabric having excellent shape stability without damaging the retroreflective yarn by preventing the occurrence of irregularities during weaving due to a difference in shrinkage ratio between yarns, and not using caustic soda during refining. do.

그러므로 본 발명에 의하면, 나일론필라멘트사 또는 폴리에스테르필라멘트사를 300~450m/min으로 리와인딩하여 셋팅용 지관에 권취후, 90~120℃ 온도에서 더블셋팅을 실시하여 나일론필라멘트사 또는 폴리에스테르필라멘트사의 비수수축율을 1~3%가 되도록 한 후, Therefore, according to the present invention, nylon filament yarn or polyester filament yarn is rewound at 300 to 450 m / min and wound around a setting paper tube, followed by double setting at a temperature of 90 to 120 DEG C to form a nylon filament yarn or a polyester filament yarn The shrinkage ratio was adjusted to 1 to 3%

상기 나일론필라멘트사 또는 폴리에스테르필라멘트사를 폴리비닐알코올(PVA) 6~8중량%를 물에 용해시켜 사이징액을 만들어 사이징공정을 실시하여 경사로 사용하고,The nylon filament yarn or the polyester filament yarn is dissolved in water in an amount of 6 to 8% by weight of polyvinyl alcohol (PVA) to prepare a sizing solution, which is subjected to a sizing process,

상기 더블셋팅한 나일론필라멘트사 또는 폴리에스테르필라멘트사와 재귀반사원사를 교호로 경사 및 위사로 공급하여 제직한 후, The double-set nylon filament yarn or polyester filament yarn and the recurrent reflection yarn are fed alternately in warp and weft yarns,

80~100℃의 열수에서 상기 사이징액의 폴리비닐알코올(PVA)을 제거하는 정련을 하는 것을 특징으로 하는 형태안정성이 우수한 재귀반사원단의 제조방법이 제공된다.There is provided a method of manufacturing a retroreflective fabric excellent in shape stability, characterized by refining to remove polyvinyl alcohol (PVA) from the sizing solution in hot water at 80 to 100 캜.

이하 본 발명을 보다 상세히 설명하기로 한다.Hereinafter, the present invention will be described in more detail.

본 발명의 형태안정성이 우수한 재귀반사원단의 제조방법은 비수수축율이 5~15%인 공지의 나일론필라멘트사 또는 폴리에스테르필라멘트사를 가공하여 비수수축율이 1~3%가 되도록 한 후, 사이징하여 경사로 사용하고, 더블셋팅한 나일론필라멘트사 또는 폴리에스테르필라멘트사와 재귀반사원사를 교호로 경사 및 위사로 공급하여 제직하고 정련하는 것이다. The method for producing a retroreflective fabric excellent in shape stability according to the present invention comprises processing a known nylon filament yarn or polyester filament yarn having a non-water shrinkage ratio of 5 to 15% so as to have a non-water shrinkage ratio of 1 to 3% Nylon filament yarn or polyester filament yarn which is double set, and recursive reflection yarn are alternately fed in warp and weft, and are weaved and refined.

본 발명에서 경사 및 위사일부로 사용되는 일반적인 나일론필라멘트사 또는 폴리에스테르필라멘트사는 비수수축율이 5~15%인 상태로 시중에서 생산되는데, 이를 그대로 경사 및 위사일부로 사용하고 위사일부로 재귀반사원사를 사용하여 제직하는 경우에는 비수수축율차이로 인해 직물에 요철이 발생되는 문제점이 발생하게 된다.In the present invention, a general nylon filament yarn or polyester filament yarn used as a part of warp and weft yarns is produced in the market with a non-water shrinkage ratio of 5 to 15%. It is used as a warp yarn and a part of weft yarn, The irregularities are generated in the fabric due to the difference in the non-water shrinkage ratio.

이에 본 발명에서는 상기와 같은 문제점을 해결하기 위하여 비수수축율이 5~15%인 나일론필라멘트사 또는 폴리에스테르필라멘트사를 300~450m/min으로 리와인딩하여 셋팅용 지관에 권취후, 90~120℃ 온도에서 더블셋팅을 실시하여 나일론필라멘트사 또는 폴리에스테르필라멘트사의 비수수축율을 1~3%가 되도록 한다. In order to solve the above problems, in the present invention, nylon filament yarn or polyester filament yarn having a non-shrinkage ratio of 5 to 15% is rewound at 300 to 450 m / min and wound around a setting paper tube, To make the nylon filament yarn or polyester filament yarn shrinkage ratio 1 to 3%.

상기 더블셋팅은 90~120℃에서 60분 행한 후 60분정도 공기중에 노출시키고 다시 90~120℃에서 60분 행함으로써 나일론필라멘트사 또는 폴리에스테르필라멘트사의 비수수축율을 1~3%가 되도록 하는 것이다.The double setting is carried out at 90 to 120 ° C for 60 minutes, followed by exposure to the air for 60 minutes and then at 90 to 120 ° C for 60 minutes so that the nylon filament yarn or polyester filament yarn is shrunk to 1 to 3%.

이렇게 비수수축율을 감소시킨 상기 나일론필라멘트사 또는 폴리에스테르필라멘트사를 경사로 사용하기 위하여 폴리비닐알코올(PVA) 5~8중량%를 물에 용해시켜 사이징액에 사이징공정을 실시하게 된다. In order to use the nylon filament yarn or polyester filament yarn in which the non-water shrinkage ratio is reduced, 5 to 8% by weight of polyvinyl alcohol (PVA) is dissolved in water and the sizing solution is subjected to a sizing process.

본 발명에서 일부 경사 및 위사로 사용하는 재귀반사원사는 폴리에스터 필름에 반사체를 얇게 도포하여 슬리팅(Slitting)한 재귀반사원사를 사용할 수 있는데, 이러한 재귀반사원사는 가성소다계열의 정련제에 손상되는 특성을 가지고 있으므로 사이징 조건에서 아크릴을 사용하지 않아야 한다. The retroreflective yarn used in some warp yarns and weft yarns in the present invention may be a retroreflective yarn in which a reflector is thinly coated on a polyester film to slit the yarn. Such a retroreflective yarn may damage the caustic soda- Properties, so acrylic should not be used under sizing conditions.

폴리비닐알코올(PVA) 농도 5% 미만의 농도에서는 가호 불량으로 제직시 문제점이 발생하며, 폴리비닐알코올(PVA) 농도 8% 초과시에는 정련이 어려워지는 문제점이 발생한다. 사이징온도는 120~160℃의 온도로 실시한다.When the concentration of polyvinyl alcohol (PVA) is less than 5%, problems occur in weaving due to defective adhesion, and when polyvinyl alcohol (PVA) concentration exceeds 8%, refinement becomes difficult. The sizing temperature is 120-160 ° C.

본 발명의 재귀반사원단의 경사 및 위사는 상기 더블셋팅한 나일론필라멘트사 또는 폴리에스테르필라멘트사와 재귀반사원사를 교호로 공급하는데, 그 비율은 재귀반사효과의 정도에 따라 다양하게 설정할 수 있다. 상기 나일론필라멘트사 또는 폴리에스테르필라멘트사는 재귀반사원단의 위사로 사용할 때는 더블셋팅한 것을, 경사로 사용할 때에는 더블셋팅후 사이징공정을 한 것을 사용한다. The warp and weft yarns of the retroreflective fabric of the present invention alternately supply the double set nylon filament yarn or the polyester filament yarn and the retroreflective yarn alternately, and the ratio can be variously set according to the degree of the reflex reflection effect. The nylon filament yarn or the polyester filament yarn is double-set when used as a weft yarn of a retroreflective fabric. When the yarn is used as a warp yarn, it is subjected to a sizing process after double setting.

제직후에는 원단을 정련하는데, 재귀반사원사가 꺾이거나 손상되는 것을 방지하기 위해 80~100℃의 열수에서 상기 사이징액의 폴리비닐알코올(PVA)을 제거하는 정련을 하게 된다. After the weaving, the fabric is refined to remove the polyvinyl alcohol (PVA) of the sizing solution in hot water of 80 to 100 ° C to prevent the reflex reflection yarn from being broken or damaged.

그러므로 본 발명에 의하면 원사간의 비수수축율의 차이로 인한 제직시 요철 발생을 방지하고, 정련시 가성소다를 사용하지 않음으로써 재귀반사원사의 손상이 없는 형태안정성이 우수한 재귀반사원단을 제공할 수 있다.Therefore, according to the present invention, it is possible to provide a retroreflective fabric excellent in shape stability without damaging the retroreflective yarn by preventing the occurrence of irregularities during weaving due to difference in shrinkage ratio between yarns, and not using caustic soda during refining.

도 1은 본 발명에 의해 제조된 재귀반사원단의 표면사진이며,
도 2는 종래의 제조방법인 비교예 1의 원단의 표면사진이다.1 is a photograph of the surface of a retroreflective fabric fabricated according to the present invention,
2 is a photograph of the surface of the fabric of Comparative Example 1 which is a conventional manufacturing method.

다음의 실시예에서는 본 발명의 재귀반사원단을 제조하는 비한정적인 예시를 하고 있다.The following examples illustrate non-limiting examples of making the retroreflective fabrics of the present invention.

[실시예 1][Example 1]

폴리에스테르필라멘트사(75d/36fila, 비수수축율 5.5%)를 450m/min으로 리와인딩하여 1000g의 셋팅용 지관에 권취후, 90℃에서 60분 셋팅한 후 60분정도 공기중에 노출시키고 다시 90℃에서 60분간 셋팅하여 더블셋팅을 실시하여 상기 폴리에스테르필라멘트사의 비수수축율을 1%가 되도록 한 후, 상기 폴리에스테르필라멘트사를 폴리비닐알코올(PVA) 7중량%를 물에 용해시킨 사이징액에 사이징공정을 실시(120℃)하여 경사로 사용하고, 상기 더블셋팅한 폴리에스테르필라멘트사와 재귀반사원사를 교호로 경사 및 위사로 공급하여 평직으로 제직한 후, 80~100℃의 열수에서 상기 사이징액의 폴리비닐알코올(PVA)을 제거하는 정련을 실시하여 재귀반사원단을 제조하였다.The polyester filament yarn (75d / 36fila, non-water shrinkage ratio: 5.5%) was rewound at 450 m / min and wound around a setting paper tube of 1000g, set at 90 ° C for 60 minutes, exposed to the air for 60 minutes at 90 ° C The polyester filament yarn was subjected to a sizing process in which 7% by weight of polyvinyl alcohol (PVA) was dissolved in water, and the polyester filament yarn was subjected to a sizing process The polyester filament yarn and the retroreflective yarn which are double-set are fed alternately in a warp and weft manner and are weaved in plain weave, and then the polyvinyl alcohol (PVA) was removed to prepare a retroreflective fabric.

[비교예 1][Comparative Example 1]

폴리에스테르필라멘트사(75d/36fila, 비수수축율 5.5%)를 상기 폴리에스테르필라멘트사를 폴리비닐알코올(PVA) 3중량%, 아크릴계 호제 3중량%를 물에 용해시킨 사이징액에 사이징공정을 실시(120℃)하여 경사로 사용하고, 상기 폴리에스테르필라멘트사와 재귀반사원사를 교호로 경사 및 위사로 공급하여 평직으로 제직한 후, 80~100℃의 가성소다액에서 상기 사이징액의 호제를 제거하는 정련을 실시하여 재귀반사원단을 제조하였다.The polyester filament yarn was subjected to a sizing process in which 3% by weight of polyvinyl alcohol (PVA) and 3% by weight of an acrylic type foaming agent were dissolved in water to obtain a sizing solution of polyester filament yarn (75d / 36fila, ° C.), and the polyester filament yarn and the retroreflective yarn are fed alternately into warp and weft yarns to weave in plain weave, followed by refining to remove the sizing agent from the caustic soda liquid at 80 to 100 ° C. To prepare a retroreflective fabric.

비교예 1의 원단의 표면사진은 도 2인데, 원사간의 비수 수축율로 인한 요철이 발생하고 정련시 가성소다로 인한 재귀반사원사의 손상이 발생하였다. 이에 반해 본 발명에 의해 제조된 재귀반사원단의 표면사진인 도 1에서는 요철발생이나 재귀반사원사의 손상이 발생하지 않았다. FIG. 2 is a photograph of the surface of the fabric of Comparative Example 1, where irregularities were generated due to the shrinkage ratio between the yarns and damage to the retroreflective yarn due to caustic soda occurred during refining. On the other hand, in FIG. 1, which is a photograph of the surface of the retroreflective fabric produced by the present invention, no irregularities or damage to the retroreflective yarn occurred.

Claims (3)

나일론필라멘트사 또는 폴리에스테르필라멘트사를 300~450m/min으로 리와인딩하여 셋팅용 지관에 권취후, 90~120℃ 온도에서 더블셋팅을 실시하여 나일론필라멘트사 또는 폴리에스테르필라멘트사의 비수수축율을 1~3%가 되도록 한 후,
상기 나일론필라멘트사 또는 폴리에스테르필라멘트사를 폴리비닐알코올(PVA) 6~8중량%를 물에 용해시켜 사이징액을 만들어 사이징공정을 실시하여 경사로 사용하고,
상기 더블셋팅한 나일론필라멘트사 또는 폴리에스테르필라멘트사와 재귀반사원사를 교호로 경사 및 위사로 공급하여 제직한 후,
80~100℃의 열수에서 상기 사이징액의 폴리비닐알코올(PVA)을 제거하는 정련을 하는 것을 특징으로 하는 형태안정성이 우수한 재귀반사원단의 제조방법.Nylon filament yarn or polyester filament yarn is rewound at 300 to 450 m / min, wound around a setting paper tube, and double set at 90 to 120 ° C to adjust the nonshrinkage ratio of nylon filament yarn or polyester filament yarn to 1 to 3 %, ≪ / RTI >
The nylon filament yarn or the polyester filament yarn is dissolved in water in an amount of 6 to 8% by weight of polyvinyl alcohol (PVA) to prepare a sizing solution, which is subjected to a sizing process,
The double-set nylon filament yarn or polyester filament yarn and the recurrent reflection yarn are fed alternately in warp and weft yarns,
And refining the polyvinyl alcohol (PVA) of the sizing solution at a temperature of 80 to 100 占 폚 to remove the polyvinyl alcohol (PVA). 제 1항에 있어서,
상기 나일론필라멘트사 또는 폴리에스테르필라멘트사는 비수수축율이 5~15%인 것을 특징으로 하는 형태안정성이 우수한 재귀반사원단의 제조방법. The method according to claim 1,
Wherein the nylon filament yarn or the polyester filament yarn has a non-water shrinkage ratio of 5 to 15%. 제 1항에 있어서,
상기 더블셋팅은 90~120℃에서 60분간 셋팅한 후 60분정도 공기중에 노출시키고 다시 90~120℃에서 60분간 셋팅하는 것을 특징으로 하는 형태안정성이 우수한 재귀반사원단의 제조방법.The method according to claim 1,
Wherein the double setting is set at 90 to 120 캜 for 60 minutes, followed by exposure to air for about 60 minutes, and then set at 90 to 120 캜 for 60 minutes.
KR1020170064080A 2017-05-24 2017-05-24 Process Of Producing Reflective Fabric Having Excellent Shape Stability KR101900769B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102100136B1 (en) * 2018-12-17 2020-04-13 조대현 Woven fabric type padding material with excellent form-stability

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003020535A (en) 2001-07-03 2003-01-24 Teijin Ltd Retroreflective yarn, retroreflective fabric and clothes using the same
JP2011256518A (en) 2011-08-26 2011-12-22 Kenji Iwata Retroreflection fabric and retroreflection clothes using the same

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003020535A (en) 2001-07-03 2003-01-24 Teijin Ltd Retroreflective yarn, retroreflective fabric and clothes using the same
JP2011256518A (en) 2011-08-26 2011-12-22 Kenji Iwata Retroreflection fabric and retroreflection clothes using the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102100136B1 (en) * 2018-12-17 2020-04-13 조대현 Woven fabric type padding material with excellent form-stability

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