KR100421920B1 - Production of opaque hollow fiber having excellent lightweight properties, heat retaining properties and low light transmittance - Google Patents
Production of opaque hollow fiber having excellent lightweight properties, heat retaining properties and low light transmittance Download PDFInfo
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- KR100421920B1 KR100421920B1 KR1019960068845A KR19960068845A KR100421920B1 KR 100421920 B1 KR100421920 B1 KR 100421920B1 KR 1019960068845 A KR1019960068845 A KR 1019960068845A KR 19960068845 A KR19960068845 A KR 19960068845A KR 100421920 B1 KR100421920 B1 KR 100421920B1
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- light transmittance
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- 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
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- 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
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/08—Addition of substances to the spinning solution or to the melt for forming hollow filaments
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- 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
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
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- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Artificial Filaments (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
Description
제 1도 및 제 2도는 본 발명에 사용된 방사구금의 간략도1 and 2 are simplified views of the spinneret used in the present invention.
* 도면의 주요 부분 부호에 대한 설명* Description of the major parts of the drawings
Lw: 슬릿의 폭, Ld: 슬릿과 슬릿간의 간격, r : 노즐 홀(Hole)의 내부반경, R : 노즐 홀(Hole)의 외부반경L w : width of slit, L d : distance between slit and slit, r: inner radius of nozzle hole, R: outer radius of nozzle hole
본 발명은 불투명성이 우수한 중공섬유의 제조에 관한 것으로, 보다 상세하게는 무기계 피그먼트(pigment)가 5 내지 20 중량% 범위로 함유된 열가소성 폴리머를 3 내지 4개의 슬릿(slit)을 갖는 방사구금을 통하여 방사함으로써 중공사 본래의 우수한 경량 보온성을 유지하면서 광 투과율이 현저히 낮은 불투명성 중공섬유를 제조하는 방법에 관한 것이다.The present invention relates to the production of hollow fibers having excellent opacity, and more particularly, spinnerets having 3 to 4 slits of thermoplastic polymer containing inorganic pigments in the range of 5 to 20% by weight. The present invention relates to a method for producing an opaque hollow fiber with a significantly low light transmittance while maintaining excellent light insulation of inherent hollow fiber.
종래 지금까지 알려진 중공섬유직물의 제조방법은 예를들면 일본국 특개평 3-137275호 에서는 용해성이 다른 2종의 섬유를 통하여 형성하되, 심부를 용해성이 높은 폴리머로 구성하여 용해감량 처리함으로써 중공필라멘트를 제조하는 방법이 개시되어 있고, 일본국 특개평 4-185739호에서는 폴리에스터 중공섬유를 100∼500 T/M으로 가연하는 것을 특징으로하는 흡수성 직편물의 제조방법에 대하여 기술하고 있다. 또한, 일본국 특개평 2-19509호 에서는 아크릴 소재를 이용한 C자형 또는 6자형 중공섬유를 기술하였고, 일본국 특공소 63-27470호 에서는 일면에 폴리에스테르 섬유 다른면에는 일반 폴리에스테르 섬유를 초성분으로 알칼리 용해성 폴리머를 심성분으로 접합한 폴리에스테르 복합섬유를 사용한 직 편물로서 면적대비 중공율이 5 내지 30% 인 발수 흡수성 가공포면의 제조방법이 개시되어 있다.Conventionally, the method of manufacturing hollow fiber fabrics known so far is, for example, Japanese Patent Laid-Open No. 3-137275, which is formed through two kinds of fibers having different solubility. Japanese Patent Laid-Open No. Hei 4-185739 discloses a method for producing an absorbent knitted fabric characterized in that the polyester hollow fiber is combustible at 100 to 500 T / M. In addition, Japanese Patent Application Laid-open No. 2-19509 describes C-shaped or 6-shaped hollow fibers using acrylic materials, and Japanese Patent Application No. 63-27470 describes polyester fibers on one side and general polyester fibers on the other side. A method for producing a water-repellent absorbent fabric surface having a hollow ratio of 5 to 30% by area as a knitted fabric using a polyester composite fiber bonded to an alkali soluble polymer as a core component is disclosed.
통상 중공섬유의 특성으로는 가볍고 부품성이 우수하며, 함유 공기가 많아 단열 효과 및 보온성이 우수하며, 중공부의 모세관 작용에 의해 흡수성, 투수성이 우수한 것을 들 수 있고 이러한 특성으로 인하여 중공섬유는 인테리어용 섬유, 카핏, 일반 의복용 뿐만 아니라 미세다공을 갖는 섬유는 한외여과, 분리기능 섬유등 그 특징을 이용한 용도 개발이 급속히 진행되고 있다. 그러나, 본래의 특성으로 인하여 내부가 비쳐 보이는 등의 단점이 있어 용도에 제한을 받는 문제점이 있다.The characteristics of the hollow fiber are generally light and excellent in parts, excellent insulated effect and warmth due to the large amount of air contained therein, and excellent absorption and permeability due to the capillary action of the hollow part. In addition to the fibers for textiles, carpets, and general clothing, fibers having micropores are rapidly developing applications that utilize such characteristics as ultrafiltration and separation functional fibers. However, due to the inherent characteristics, there is a problem in that the inside is reflected, there is a problem that the use is limited.
이와같은 문제점을 해결하기 위하여 여러가지 방법이 제안되고 있다. 예를들면, 불투명성을 갖는 무기계 및 유기계 안료를 폴리머의 중합단계에서 투입하여 섬유에 불투명성을 갖게하는 방법은 종래부터 시행되어 왔으나, 이 방법은 중합단계에서 안료를 최대 2% 정도밖에 투입할 수 없는 관계로 불투명성을 갖고자 하는 목적 보다는 소광 효과를 얻는 방법으로만 사용되고 있다. 따라서, 충분한 불투명성을 얻기 위하여서는 다량의 안료 투입이 필요하게 된다. 이와같은 문제점을 해결하기 위해서 최근, 복합방사 방법으로 섬유에 다량의 안료를 투입함으로써 불투명 효과를 부여하는 방법이 제안되었다. 이방법은 고농도의 안료를 혼합한 불투명 폴리머를 심성분으로 하고, 안료를 혼합하지 않은 투명 폴리머를 초성분으로 하여 동심원상의 심 초형 복합섬유를 제조하는 방법이다. 또 다른 복합방사 방법으로 일본국 특개평 5-247723호에서는 슬릿상의 불투명 폴리머와 원호상의 투명 폴리머가 교호로 배치되는 단면을 가짐으로써 빛의 산란 효과를 향상시키는 방법이 제안되어 있다.Various methods have been proposed to solve this problem. For example, a method of adding opaque inorganic and organic pigments in the polymerization step of the polymer to make the fibers opaque has been practiced in the past, but this method can only add up to 2% of the pigment in the polymerization step. As a result, it is used only as a method of obtaining a matting effect, rather than for the purpose of having opacity. Therefore, in order to obtain sufficient opacity, a large amount of pigment input is required. In order to solve such a problem, the method which gives an opacity effect by adding a large amount of pigment to a fiber by the composite spinning method was proposed recently. This method is a method for producing concentric heart-shaped composite fibers using an opaque polymer mixed with a high concentration of pigment as a core component and a transparent polymer without mixing a pigment as a primary component. In another compound spinning method, Japanese Patent Laid-Open No. 5-247723 has proposed a method of improving the light scattering effect by having a cross section in which a slit opaque polymer and an arc-shaped transparent polymer are alternately arranged.
그러나, 상기와 같은 복합방사법은 불투명성이 우수한 효과는 있지만, 안료가 폴리머 내부에 집중적으로 분산되어 있어 방사공정 과정에서 방사 팩(pack) 압력이 급격히 상승하기 때문에 노즐 교체주기가 짧아지는 문제점이 있고, 산화티탄(TiO2)과 같이 불투명 안료로 사용되는 피그먼트가 폴리머에 비해 3 내지 4배 가량 높은 비중을 갖기 때문에 안료가 투입되는 양만큼 중량이 증가하여 인너웨어(Innerwear)나 수영복 등에는 적용하기 곤란한 문제점을 갖고 있다.However, the composite spinning method as described above has an excellent effect of opacity, but since the pigment is dispersed in the polymer intensively, there is a problem that the nozzle replacement cycle is shortened because the spinning pack pressure rapidly increases during the spinning process. Pigment used as an opaque pigment such as titanium oxide (TiO 2 ) has a specific gravity of about 3 to 4 times higher than that of the polymer, so the weight is increased by the amount of the pigment to be applied to innerwear or swimwear. It has a difficult problem.
한편, 투명성을 부여하는 또 다른 방법으로 일본국 특개평 3-45791호와 같이 원단의 이면에 안감을 대는 방법이 제시되고 있으나, 이 방법은 원단이 두꺼워져 착용감이 떨어지고 봉제공정이 추가되는 문제점이 있어 적용의 한계점이 있었다.On the other hand, as another method of imparting transparency, a method of lining the back side of the fabric has been proposed, as in Japanese Patent Laid-Open No. 3-45791, but this method has a problem that the fabric becomes thicker, resulting in poor fit and a sewing process. There was a limit of application.
본 발명은 이러한 종래의 문제점을 해결하기 위하여 일반사 수준의 제사공정을 가지면서, 우수한 불투명성과 경량 보온성을 가지는 중공섬유를 제조하는 방법에 관한 것이다.The present invention relates to a method for producing a hollow fiber having an excellent opacity and lightweight insulation while having a weaving process of the general yarn level in order to solve such a conventional problem.
본 발명의 중공섬유는 무기계 피그먼트(Pigment)가 5 내지 20 중량% 함유된 불투명성의 열가소성 폴리머를 3 내지 4개의 슬릿(Slit)상으로 구성된 방사구금을 통하여 방사하는 것으로써 제조 될 수 있다.The hollow fiber of the present invention may be prepared by spinning an opaque thermoplastic polymer containing 5 to 20% by weight of inorganic pigments through a spinneret composed of 3 to 4 slits.
불투명성을 부여하는 무기계 피그먼트(Pigment)는 본 발명의 목적인 충분한 불투명 효과를 부여 할 수 있어야 함은 물론 방사성의 저하를 억제하고 염색시 발색성을 떨어뜨리지 않는 것을 선택하는 것이 중요하다. 이러한 불투명성 피그먼트(Pigment)로는 산화티탄, 산화아연, 산화알루미늄, 산화지르코늄, 산화마그네슘등을 사용할 수 있는데, 가장 바람직하게는 산화티탄을 사용하는 것이 좋다.Inorganic pigments that impart opacity should be able to impart a sufficient opacity effect, which is the object of the present invention, as well as to suppress the degradation of radioactivity and to select a color that does not degrade coloration during dyeing. Titanium oxide, zinc oxide, aluminum oxide, zirconium oxide, magnesium oxide, and the like may be used as such an opaque pigment. Most preferably, titanium oxide is used.
본 발명에서 피그먼트의 입경(粒徑)은 0.05 내지 0.5㎛인 것이 바람직하고 0.5㎛를 초과하는 경우에는 방사시의 팩압이 급상승하고 방사노즐이 쉽게 막히는 등 방사성이 불량해진다. 사용하는 피그먼트는 백색을 띄는것이 좋은데 이는, 흑색, 적색, 청색 등의 유색 피그먼트를 사용하는 경우에는 불투명 효과를 얻을 수는 있지만 안료의 색상에 의해 색조가 영향을 많이 받아 염색시 의도하는 대로 조색(調色)하기 곤란한 문제점이 있기때문이다.In the present invention, the particle diameter of the pigment is preferably 0.05 to 0.5 占 퐉, and when the particle diameter exceeds 0.5 占 퐉, the pack pressure during spinning is rapidly increased and the radiation nozzle is easily clogged. Pigment used should be white, which can get opaque effect when using colored pigments such as black, red, blue, etc. This is because there is a problem that is difficult to color.
본 발명에 사용되는 열가소성 폴리머에 혼합되는 피그먼트의 함량은 피그먼트의 종류, 입경(粒徑)에 따라 달라지는데, 용융방사성이 양호하고 우수한 불투명성을 얻기 위해서는 폴리머에 대해 5 내지 20 중량%로 하는 것이 바람직하다. 피그먼트의 함량이 5 중량% 미만일 경우에는 충분한 불투명성을 얻을 수 없게 되고, 20중량%를 초과하면 불투명 효과는 우수하지만 폴리머 내에서 피그먼트 입자의 균일 분산이 어려워져 방사성이 불량해지는 문제점이 발생하게 된다.The content of the pigment to be mixed in the thermoplastic polymer used in the present invention varies depending on the type and particle size of the pigment, but in order to obtain good melt spinning property and excellent opacity, it is 5 to 20 wt% based on the polymer. desirable. When the content of the pigment is less than 5% by weight, sufficient opacity cannot be obtained. When the content of the pigment is more than 20% by weight, the opacity effect is excellent, but uniform dispersion of pigment particles in the polymer becomes difficult, resulting in poor radioactivity. do.
무기계 피그먼트와 열가소성 폴리머의 배합방법은 중합시 피그먼트를 첨가하는 방법과, 분말상의 피그먼트와 펠렛(Pellet)상의 폴리머를 용융 혼합하는 방법등이 있는데, 고농도의 피그먼트를 배합하기위해서는 용융혼합방법이 바람직하며, 본 발명에서도 용융혼합 방법을 채용 하였다. 열가소성 폴리머로는 나일론 6, 나일론 66, 폴리에틸렌테레프탈레이트, 폴리부틸렌테레프탈레이트 등 기존의 용융방사가 가능한 폴리머는 모두 사용할 수 있다.The mixing method of the inorganic pigment and the thermoplastic polymer includes a method of adding a pigment during polymerization, and a method of melting and mixing powdered pigment and pellet polymer. The method is preferred, and the melt mixing method is also employed in the present invention. As the thermoplastic polymer, all existing melt-spun polymers such as nylon 6, nylon 66, polyethylene terephthalate, and polybutylene terephthalate can be used.
중공사를 제조하는 방법에는 다이스웰(Die Swell)일반방사법과, 2종의 폴리머를 사용하여 쉬스-코어(Sheath-Core)형의 단면을 갖는 원사를 제조한 후 후공정상에서 코어(Core)부를 용매로 용출해 내는 복합 방사법이 있다. 복합방사법은 균일 용출이 어렵고, 용출후 형성되는 중곡사가 C자형 단면을 갖기 때문에 형태 안정성이 떨어지는 문제점이 있는 반면, 일반 방사법은 중공부의 형태 안정성, 제사공정성의 단순함 등의 특징이 있고 별도의 용출 공정이 없는 장점을 가지고 있어, 본 발명에서는 일반 방사법을 이용하였다.The hollow fiber manufacturing method includes a die swell general spinning method and two kinds of polymers to produce a yarn having a sheath-core cross section, and then the core part in a post process. There is a complex spinning method which elutes with a solvent. The complex spinning method is difficult to uniformly elute and has a problem of poor shape stability due to the hollow curved yarn formed after elution, while the general spinning method is characterized by the shape stability of the hollow part and the simplicity of weaving process. Since there is no advantage, in the present invention, the general spinning method was used.
중공사 제조를 위해 사용된 본 발명의 방사구금의 홀(Hole)은 제 1도 및 제 2도와 같이 3 내지 4개의 슬릿(Slit)을 가지면서 다음과 같은 식(1) 및 식(2)를 만족하고 있는 것이다.The hole of the spinneret of the present invention used for the manufacture of hollow fiber has the following formula (1) and formula (2) having 3 to 4 slits as shown in FIGS. I am satisfied.
0.5 ≤ LW/Ld≤ 1.5 ----------(1)0.5 ≤ L W / L d ≤ 1.5 ---------- (1)
0.5 ≤ r/R ≤ 0.8 ----------(2)0.5 ≤ r / R ≤ 0.8 ---------- (2)
여기에서, Lw은 슬릿의 폭Where L w is the width of the slit
Ld은 슬릿과 슬릿간의 간격L d is the spacing between slits
r은 노즐 홀(Hole)의 내부반경r is the inner radius of the nozzle hole
R은 노즐 홀(Hole)의 외부반경이다.R is the outer radius of the nozzle hole (Hole).
상기의 식에서, Lw/ Ld이 0.5 보다 작게되면 중공형성성이 불량하게 되며, 1.5보다 커지면 중공율이 떨어지게 된다. 그러나, 본 발명에서는 폴리머에 배합되는 피그먼트가 원사내에서 결정핵제로 작용하기 때문에, 피그먼트가 투입되지 않는 일반 중공사에 비해 Lw/ Ld가 크더라도 상대적으로 높은 중공율을 얻을 수 있었다.In the above formula, when L w / L d is smaller than 0.5, the hollow formability is poor, and when it is larger than 1.5, the hollow ratio is lowered. However, in the present invention, since the pigment blended into the polymer acts as a nucleating agent in the yarn, a relatively high hollow ratio can be obtained even if L w / L d is larger than that of the general hollow fiber without the pigment. .
또, r/R이 0.5 보다 작으면 중공율이 작아지거나, 중공형성이 안되며, 0.8보다 크면 중공이 너무 크게되어 중공사의 형태 안정이 떨어지게 된다.In addition, if the r / R is less than 0.5, the hollow ratio is small, or the hollow formation is not possible, if larger than 0.8, the hollow is too large, the shape stability of the hollow yarn is deteriorated.
이와같이 얻어진 본 발명에 따른 중공섬유는 높은 불투명성을 유지하면서도 중공사 특유의 경량 보온성을 가지고 있어 속이 비치지 않는 여성용 언더웨어, 블라우스 및 수영복 등에 유용하게 응용될 수 있는 장점을 갖는다.The hollow fiber according to the present invention thus obtained has an advantage that it can be usefully applied to women's underwear, blouses and swimsuits that do not shine because it has a unique lightweight hollow insulation while maintaining high opacity.
이하 실시예 및 비교예를 들어 본 발명에 대하여 상세히 설명하자고 한다.Hereinafter, the present invention will be described in detail with reference to Examples and Comparative Examples.
[실시예 1]Example 1
나일론 6(상대점도 3.0, 황산 95%)와 입경이 0.35㎛인 산화티탄을 균일하게 혼합하여 산화티탄의 함량이 10 중량%인 불투명 나일론 조성물을 준비한 후, 슬릿(Slit)이 상기 식(1) 및 (2)를 만족하고 있는 제 1도의 방사구금장치를 이용하여 방사하고 통상의 방법으로 열연신하여 중공율이 20%인 중공사를얻었다.After uniformly mixing nylon 6 (relative viscosity 3.0, 95% sulfuric acid) and titanium oxide having a particle size of 0.35 µm, an opaque nylon composition having a titanium oxide content of 10% by weight was prepared. And spinning using the spinneret apparatus of FIG. 1 satisfying (2) and hot stretching in the usual manner to obtain a hollow fiber having a hollow ratio of 20%.
이와같이 얻어진 중공사를 환편하여 니팅(Knitting) 지를 만든후 광투과율, 경량성 및 보온성을 측정하고 이를 표 1에 나타내었다.The hollow fiber obtained in this way was circular knitted to make a Knitting paper, and then the light transmittance, light weight, and thermal insulation were measured and shown in Table 1.
[비교예 1]Comparative Example 1
나일론6(상대점도 3.0, 황산95%)을 슬릿(Slit)이 상기 식(1) 및 식(2)를 만족하고 있는 제 1도의 방사구금장치를 이용하여 방사하고 통상의 방법으로 열연신하여 중공율이 20%인 중공사를 얻었다. 이와같이 얻어진 중공사를 환편하여 니팅(Knitting)지를 만든 후 그 기능을 평가하여 표 1에 나타내었다.Nylon 6 (relative viscosity 3.0, 95% sulfuric acid) was spun using a spinneret as shown in FIG. 1 in which a slit satisfies Equation (1) and Equation (2). Hollow fiber with a rate of 20% was obtained. The hollow fiber obtained in this way was made in circular knitting to make Knitting paper, and its function was evaluated and shown in Table 1.
[비교예 2]Comparative Example 2
나일론6(상대점도 3.0 황산 95%)와 입경이 0.35㎛인 산화티탄을 균일하게 혼합하여 산화티탄의 함량이 10%인 불투명 나일론 조성물을 준비한 후, 통상의 일반 방사 구금 장치를 이용하여 방사, 연신하여 불투명사를 제조하였다. 이와같이 얻어진 원사를 환편하여 니팅(Knitting)지를 만든 후 그 기능을 평가하여 표 1에 나타내었다.After uniformly mixing nylon 6 (95% sulfuric acid 3.0% sulfuric acid) and titanium oxide having a particle diameter of 0.35 µm, an opaque nylon composition having a titanium oxide content of 10% was prepared, and then spun and stretched using a common spinneret. To prepare an opaque yarn. The yarn thus obtained was rounded to make knitting (Knitting) paper, and its function was evaluated and shown in Table 1.
[표 1] Knitting 지에 대한 기능성 평가 결과[Table 1] Results of functional evaluation of Knitting paper
[물성평가 방법][Property evaluation method]
(1) 광 투과율 : Image Analyzer에 의해 평가하였다.(1) Light transmittance: evaluated by Image Analyzer.
(2) 경량성 : 겉보기 비중으로 나타내었다.(2) Light weight: Shown as apparent specific gravity.
(3) 보온성 : ASTMD 1518에 준하여 평가하였다.(3) Heat retention: It evaluated according to ASTMD 1518.
표 1에서 나타난 바와 같이 본 발명에 따른 중공사는 일반의 중공사와 동등한 경량 보온성을 유지하면서 광 투과율이 현저히 낮아 본 발명의 특징인 불투명성이 우수함을 나타내었다.As shown in Table 1, the hollow fiber according to the present invention exhibited excellent opacity, which is a characteristic of the present invention, with a low light transmittance while maintaining a light insulating property equivalent to that of general hollow fiber.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019960068845A KR100421920B1 (en) | 1996-12-20 | 1996-12-20 | Production of opaque hollow fiber having excellent lightweight properties, heat retaining properties and low light transmittance |
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| Application Number | Priority Date | Filing Date | Title |
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| KR1019960068845A KR100421920B1 (en) | 1996-12-20 | 1996-12-20 | Production of opaque hollow fiber having excellent lightweight properties, heat retaining properties and low light transmittance |
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| Publication Number | Publication Date |
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| KR19980050076A KR19980050076A (en) | 1998-09-15 |
| KR100421920B1 true KR100421920B1 (en) | 2004-04-17 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104698155A (en) * | 2013-12-09 | 2015-06-10 | 香港纺织及成衣研发中心有限公司 | Measurement method and measurement system of fabric ultraviolet protection coefficient |
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| KR101272525B1 (en) * | 2011-11-30 | 2013-06-11 | 현대자동차주식회사 | Preparation Method for Hollow Carbon Fiber |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR830000975A (en) * | 1978-08-03 | 1983-04-29 | 존 따블유．버간 | Strong axis adjusting device for rolling mill roller |
| JPH07238418A (en) * | 1994-02-28 | 1995-09-12 | Toray Ind Inc | Polyester hollow fiber having milky gloss |
| KR960000781A (en) * | 1994-06-21 | 1996-01-25 | 정세채 | Water purifier by low temperature low pressure distillation |
| KR960005961A (en) * | 1994-07-28 | 1996-02-23 | 김광호 | Lead-on-Chip Semiconductor Package and Manufacturing Method Thereof |
| KR960005962A (en) * | 1994-07-28 | 1996-02-23 | 황인길 | Heat Proof Heat Sink of Semiconductor Package |
-
1996
- 1996-12-20 KR KR1019960068845A patent/KR100421920B1/en not_active IP Right Cessation
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR830000975A (en) * | 1978-08-03 | 1983-04-29 | 존 따블유．버간 | Strong axis adjusting device for rolling mill roller |
| JPH07238418A (en) * | 1994-02-28 | 1995-09-12 | Toray Ind Inc | Polyester hollow fiber having milky gloss |
| KR960000781A (en) * | 1994-06-21 | 1996-01-25 | 정세채 | Water purifier by low temperature low pressure distillation |
| KR960005961A (en) * | 1994-07-28 | 1996-02-23 | 김광호 | Lead-on-Chip Semiconductor Package and Manufacturing Method Thereof |
| KR960005962A (en) * | 1994-07-28 | 1996-02-23 | 황인길 | Heat Proof Heat Sink of Semiconductor Package |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104698155A (en) * | 2013-12-09 | 2015-06-10 | 香港纺织及成衣研发中心有限公司 | Measurement method and measurement system of fabric ultraviolet protection coefficient |
| CN104698155B (en) * | 2013-12-09 | 2016-09-07 | 香港纺织及成衣研发中心有限公司 | Fabric UPF measuring method and the system of measurement |
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| KR19980050076A (en) | 1998-09-15 |
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