KR19980029645A - High Performance Filtration Nonwovens - Google Patents

High Performance Filtration Nonwovens Download PDF

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Publication number
KR19980029645A
KR19980029645A KR1019960048939A KR19960048939A KR19980029645A KR 19980029645 A KR19980029645 A KR 19980029645A KR 1019960048939 A KR1019960048939 A KR 1019960048939A KR 19960048939 A KR19960048939 A KR 19960048939A KR 19980029645 A KR19980029645 A KR 19980029645A
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nonwoven fabric
denier
fibers
layer
nonwoven
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KR1019960048939A
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Korean (ko)
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KR100196031B1 (en
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박형중
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박형중
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
    • B01D39/1607—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous
    • B01D39/1623—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous of synthetic origin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B01D39/20—Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
    • B01D39/2027—Metallic material
    • B01D39/2041—Metallic material the material being filamentary or fibrous
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B01D39/20—Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
    • B01D39/2055—Carbonaceous material
    • B01D39/2065—Carbonaceous material the material being fibrous
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/02—Types of fibres, filaments or particles, self-supporting or supported materials
    • B01D2239/0216—Bicomponent or multicomponent fibres
    • B01D2239/0233—Island-in-sea
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
    • B01D2239/0604—Arrangement of the fibres in the filtering material
    • B01D2239/0618—Non-woven
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
    • B01D2239/065—More than one layer present in the filtering material
    • B01D2239/0659—The layers being joined by needling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/10—Filtering material manufacturing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/12—Special parameters characterising the filtering material
    • B01D2239/1291—Other parameters

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Filtering Materials (AREA)

Abstract

본 발명은 고기능성 여과용 부직포에 관한 것이다.The present invention relates to a non-woven fabric for high performance filtration.

본 발명에 따른 고기능성 여과용 부직포는 폴리에스테르 단사 섬도 3 내지 10 데니어의 단섬유 또는 장섬유로 이루어지고 200 내지 500 g/㎡의 중량을 가지는 후물 부직포층, 500 내지 1500 데니어의 태(太) 데니어로 된 합섬사 부직포층, 해도형 복합 섬유로 된 50 내지 200 g/㎡의 부직포층이 순차적으로 적층되고 니들펀칭 가공된 것을 특징으로 한다.The high-performance filtration nonwoven fabric according to the present invention is a thick nonwoven fabric layer composed of short fibers or long fibers of polyester single yarn fineness of 3 to 10 deniers, and having a weight of 200 to 500 g / m 2, and a weight of 500 to 1500 deniers. The synthetic fiber nonwoven layer made of denier and the nonwoven fabric layer of 50 to 200 g / m 2 made of island-in-the-sea composite fiber are sequentially laminated and needle punched.

본 발명의 부직포에 의하면 여과후 분진량을 30 ㎎/㎥이하로 관리할 수 있으며, 본 발명의 부직포는 정전기 발생이 적고 형태안정성이 우수하여, 집진기용 필터백은 물론 액체 여과용 등 다양한 고기능성 여과용 부직포로 사용할 수 있는 효과가 있다.According to the nonwoven fabric of the present invention, the amount of dust after filtration can be managed to 30 mg / m3 or less, and the nonwoven fabric of the present invention has little static electricity and excellent form stability, and various high-performance filtration such as filter bag for dust collector and liquid filtration. It can be used as a nonwoven fabric.

Description

고기능성 여과용 부직포High Performance Filtration Nonwovens

본 발명은 고기능성 여과용 부직포에 관한 것으로서, 보다 상세하게는 해도형 초극세사 및 도전성 섬유로 된 부직포를 채용함으로써 도전성이 부여되고 미세분진 여과용으로 적합하도록 된 고기능성 여과용 부직포에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a non-woven fabric for high performance filtration, and more particularly, to a non-woven fabric for high performance filtration that is electrically conductive and suitable for fine dust filtration by employing a non-woven fabric made of island-in-the-sea ultrafine fibers and conductive fibers.

부직포는 규칙적이고 반복적인 조직을 가지고 있는 직포와는 달리 단섬유 또는 장섬유가 불규칙하게 배열 적층되어 성형된 것으로서, 강력이나 유연성은 직포에 비하여 떨어지나, 용이하게 제조될 수 있고, 두께를 자유로이 할 수 있으며, 섬유간에 자연스럽게 형성되는 공극 특성을 이용할 수 있어서, 의류용, 포장용, 산업용 등으로 널리 이용되고 있으며, 현재 용도의 다양화 및 고기능화가 계속 진행되고 있다.Unlike woven fabrics with regular and repeating tissues, non-woven fabrics are formed by irregularly arranged and stacked short fibers, and the strength and flexibility are inferior to that of woven fabrics, but can be easily manufactured and can be freely thick. In addition, it is possible to use the pore characteristics that are naturally formed between the fibers, it is widely used in clothing, packaging, industrial, etc., and the diversification and high functionalization of the current use continues.

부직포의 특성중에도 특별히 유용한 특성이 그 섬유간의 공극에 의한 여과 기능으로서, 공기여과, 액체여과, 분진여과등을 위한 거의 모든 필터에 부직포가 사용되고 있으며, 여과기능을 보다 정밀화하고 다른 기능을 부가하여 복합 기능화하는 방향으로 기술개발이 활발히 진행되고 있다.Among the properties of nonwoven fabrics, a particularly useful feature is the filtration function by the voids between the fibers.Non-woven fabrics are used in almost all filters for air filtration, liquid filtration, dust filtration, etc. Technological development is actively progressing towards functionalization.

부직포의 중요한 필터 용도로서 분진여과용 필터백이 있다. 철강공업, 시멘트 공업 또는 분체를 원료로 하거나 분체 형태의 제품을 생산하는 공업 현장에서는 많은 공정에서 다량의 분진을 포함한 오염된 공기가 배출되게 되고 이와 같은 오염된 공기가 그대로 대기중으로 배출될 때는 심각한 대기오염을 초래할 수 있기 때문에 모든 업체에서는 오염된 공기를 정화하여 대기중으로 배출하도록 의무화되어 있다.An important filter application for nonwovens is dust filter bags. In the steel industry, cement industry, or industrial sites that use powder as a raw material or produce powder-like products, many processes produce polluted air, including large amounts of dust, and serious air when such polluted air is released into the atmosphere. All companies are required to purify the polluted air and release it into the atmosphere because it can cause pollution.

정부에서는 배출되는 공기에 함유된 잔류 분진량을 1996년에 50 mg/㎥으로 규제하던 것을 1998년 이후에는 30 mg/㎥ 이하로 규제할 것을 고시하고 있다.The government announced that the amount of residual dust contained in the discharged air should be regulated to 50 mg / m3 in 1996 and below 30 mg / m3 since 1998.

이때, 공기 정화 수단으로 채용되는 것중의 하나가 집진기용 백필터이며, 이 집진기용 백필터 내부에는 여과기능을 수행하는 긴 원형 또는 비원형의 백 형태를 가진 필터백이 중심부에 장착되어 있다.At this time, one of the air purifying means employed is a bag filter for dust collector, and a filter bag having a long circular or non-circular bag shape for performing a filtration function is mounted in the center of the bag filter for dust collector.

이러한 필터백은 얼마나 미세한 먼지까지 포집하여 걸러낼 수가 있느냐가 중요한 데, 현재 선진국에서는 멤브레인, 발포코팅물, 극세섬유 라미네이팅물 등을 이용한 필터를 개발하고 있으나, 여과포의 형태안정성이 떨어지고,여과막이 쉽게 손상되며, 제조원가가 높아 상업화에 성공하였다고는 할 수 없는 실정이다.It is important that such a filter bag can collect and filter out fine dust. Currently, developed countries have developed filters using membranes, foam coatings, microfiber laminating materials, etc. It is damaged, and the manufacturing cost is high, so it cannot be said that the commercialization is successful.

본 발명의 목적은 제전성능이 부여되고 여과 정밀도가 우수한 고기능성 여과용 부직포를 제공하는 데 있다.An object of the present invention is to provide a high-performance filtration nonwoven fabric having antistatic performance and excellent filtration accuracy.

본 발명의 다른 목적은 형태안정성이 좋고, 제조원가가 적게 드는 고기능성 여과용 부직포를 제공하는 데 있다.Another object of the present invention is to provide a high-performance filtration nonwoven fabric having good shape stability and low manufacturing cost.

도1는 본 발명에 따른 고기능성 여과용 부직포의 층구조를 보여주기 위한 도면이다.1 is a view for showing the layer structure of the high-performance filtration nonwoven fabric according to the present invention.

※도면의 주요부분에 대한 부호의 설명※ Explanation of symbols for main parts of drawing

1, 2, 3 : 부직포1, 2, 3: nonwoven fabric

상기 목적을 달성하기 위한 본 발명에 따른 고기능성 여과용 부직포는 폴리에스테르 단사 섬도 3 내지 10 데니어의 단섬유 또는 장섬유로 이루어지고 200 내지 500 g/㎡의 중량을 가지는 후물 부직포층, 500 내지 1500 데니어의 태(太) 데니어로 된 합섬사 부직포층, 해도형 복합 섬유로 된 50 내지 200 g/㎡의 부직포층이 순차적으로 적층되고 니들펀칭 가공된 것을 특징으로 한다.The high-performance filtration nonwoven fabric according to the present invention for achieving the above object is a thick nonwoven fabric layer made of short fibers or long fibers of polyester single yarn fineness 3 to 10 denier and having a weight of 200 to 500 g / ㎡, 500 to 1500 Synthetic yarn nonwoven layer made of denier, and 50 to 200 g / m 2 nonwoven fabric layer made of island-in-the-sea composite fibers are sequentially laminated and needle punched.

상기 합섬사 부직포층의 합섬사로는 나이론, 폴리에스테르, 폴리프로필렌 등이 채용될 수 있다.Nylon, polyester, polypropylene, or the like may be employed as the synthetic fiber of the synthetic fiber nonwoven fabric layer.

상기 해도형 복합섬유의 분할전 단사섬도는 2 내지 5 데니어, 분할후 단사섬도는 0.001 내지 0.1 데니어인 것이 바람직하다.The single yarn fineness before division of the island-in-the-sea composite fiber is 2 to 5 denier, and the single yarn fineness after division is preferably 0.001 to 0.1 denier.

또한, 상기 해도형 복합섬유 부직포층에 금속 섬유 또는 탄소를 함유한 제전성 섬유로 된 도전성 섬유를 함유시키는 것이 바람직하다.In addition, it is preferable that the island-in-the-sea composite fiber nonwoven layer contains conductive fibers made of metal fibers or antistatic fibers containing carbon.

한편, 본 발명의 고기능성 여과용 부직포의 제조 방법은 500 내지 1500 데니어로 된 합섬사 부직포층위에 폴리에스테르 단사 섬도 3 내지 10 데니어의 단섬유 또는 장섬유로 이루어지고 200 내지 500 g/㎡의 중량을 가지는 후물 부직포를 적층시키고 니들펀칭하여 결합시키는 제 1 과정, 상기 제조된 부직포의 합섬사 부직포층위에, 분할전 단사섬도가 2 내지 5 데니어인 해도형 복합 섬유로 된 50 내지 200 g/㎡의 부직포를 적층시키고 니들펀칭하는 제 2 과정, 제조된 다층 부직포를 감량하여 복합 섬유 부직포층내의 복합 섬유의 해(海)성분을 용출해냄으로써 분리, 분할한 후 단사섬도를 0.001 내지 0.1 데니어 수준으로 하는 제 3 과정, 결과되는 부직포를 가스 신징(Gas Singeing)하고 발수 가공하는 제 4 과정으로 이루어진다.On the other hand, the manufacturing method of the high-performance filtration nonwoven fabric of the present invention is made of short fibers or long fibers of polyester single yarn fineness of 3 to 10 denier on the synthetic filament nonwoven layer of 500 to 1500 denier weight of 200 to 500 g / ㎡ The first step of laminating and needle punching the thick non-woven fabric having the above, 50 to 200 g / ㎡ of island-in-the-sea composite fiber having a single yarn fineness of 2 to 5 denier before splitting on the composite filament nonwoven layer of the prepared nonwoven fabric The second step of laminating and needle punching the nonwoven fabric, and reducing the manufactured multi-layer nonwoven fabric to elute the sea component of the composite fiber in the composite fiber nonwoven layer to separate and divide the single yarn fineness to 0.001 to 0.1 denier level. In the third process, gas singing and water repelling the resulting nonwovens It consists of four courses.

상기 가스 신징은 부직포 표면에 돌출되는 불균일한 모우를 태워 없애기 위한 것으로 면직물 등에 통상적으로 적용되는 가공공정을 본 발명에 채용한 것이다.The gas sizing is to burn off and eliminates non-uniform wool that protrudes from the surface of the nonwoven fabric, and the present invention employs a processing process commonly applied to cotton fabrics and the like.

상기에서 감량은 통상의 직포 연속 감량 방법을 이용할 수 있다.In the above reduction, a conventional woven fabric continuous reduction method can be used.

이하에서 본 발명의 실시예가 기술되어질 것이나 이하의 실시예는 단지 예증을 위한 것이므로 본 발명의 범위를 국한시키는 것으로 이해되어서는 안 될 것이다.Embodiments of the present invention will be described below, but the following examples are only for illustration and should not be understood as limiting the scope of the present invention.

실시예Example

제 1 도는 실시예의 설명을 위한 것으로서, 본 발명에 따른 고기능성 여과용 부직포의 단면을 모식적으로 나타낸 것이다.1 is for illustrative purposes, and schematically shows a cross section of a high-performance filtration nonwoven fabric according to the present invention.

본 발명의 고기능성 여과용 부직포를 제조하기 위해 우선 평균 1000 데니어 정도의 단섬유로 이루어진 폴리에스테르 부직포(1)를 제조하고 그 위에 폴리에스테르 평균단사 섬도 6 데니어 정도의 단섬유로 이루어지고 300 g/㎡의 중량을 가지는 후물 부직포(2)를 적층시키고 니들펀칭하여 결합시켰다. 다음에 상기 제조된 2 층으로 된 부직포의 폴리에스테르 부직포층 이면에 분할전 평균 단사섬도가 3 데니어인 해도형 복합 섬유로 구성되고 탄소가 함유된 도전성 섬유가 소량 함유된 100 g/㎡의 부직포(3)를 적층시키고 니들펀칭하여 결속, 결합시켰다. 제조된 다층 부직포를 연속 감량기에서 감량하여 복합 섬유 부직포층내의 복합 섬유의 해(海)성분을 용출해냄으로써 분리, 분할하여 단사섬도가 0.001 내지 0.1 데니어 수준으로 되도록 한 후, 결과되는 부직포를 가스 신징(Gas Singeing)하고 발수 가공하였다.In order to manufacture the high-performance filtration nonwoven fabric of the present invention, first, a polyester nonwoven fabric (1) made of short fibers having an average of about 1000 deniers is prepared, and the polyester average single yarn fineness is made of short fibers having a degree of 6 deniers, and is 300 g / A thick nonwoven fabric 2 having a weight of m 2 was laminated and needle punched to bond. Next, the nonwoven fabric of 100 g / m 2 containing a small amount of conductive fibers containing small amount of carbon-containing conductive fibers composed of an average single yarn fineness of 3 denier before splitting on the back surface of the two-layer nonwoven fabric prepared above ( 3) were laminated and needle punched to bind and bond. The multi-layered nonwoven fabric thus prepared is reduced in a continuous reducer to separate and divide the sea component of the composite fiber in the composite fiber nonwoven fabric layer so that the single yarn fineness is in the range of 0.001 to 0.1 denier, and the resulting nonwoven fabric is gas sintered. (Gas Singeing) and water repellent.

이와 같이 제조되는 본 발명에 의한 다층 부직포에 의해 여과후 분진량을 30 ㎎/㎥이하로 관리할 수 있었으며, 정전기 발생이 적고 형태안정성이 우수하여, 집진기용 필터백은 물론 액체 여과용 등 다양한 고기능성 여과용 부직포로 사용할 수 있는 효과가 있다.The multi-layered nonwoven fabric according to the present invention was able to manage the amount of dust after filtration to 30 mg / ㎥ or less, less static electricity generated and excellent in form stability, various high functionality such as filter bag for dust collector, as well as for liquid filtration. There is an effect that can be used as a filtration nonwoven fabric.

이상에서 본 발명은 기재된 구체예에 대해서만 상세히 설명되었지만 본 발명의 기술사상 범위 내에서 다양한 변형 및 수정이 가능함은 당업자에게 있어서 명백한 것이며, 이러한 변형 및 수정이 첨부된 특허청구범위에 속함은 당연한 것이다.Although the present invention has been described in detail only with respect to the described embodiments, it will be apparent to those skilled in the art that various modifications and variations are possible within the technical scope of the present invention, and such modifications and modifications are within the scope of the appended claims.

Claims (5)

폴리에스테르 단사 섬도 3 내지 10 데니어의 단섬유 또는 장섬유로 이루어지고 200 내지 500 g/㎡의 중량을 가지는 후물 부직포층, 500 내지 1500 데니어의 태(太) 데니어로 된 합섬사 부직포층, 해도형 복합 섬유로 된 50 내지 200 g/㎡의 부직포층이 순차적으로 적층되고 니들펀칭 가공된 것을 특징으로 하는 고기능성 여과용 부직포.Polyester single yarn fineness A thick nonwoven fabric layer consisting of short fibers or long fibers of 3 to 10 denier and having a weight of 200 to 500 g / m 2, a synthetic filament nonwoven layer of thick denier of 500 to 1500 denier, sea island type A non-woven fabric for high performance filtration, wherein a nonwoven fabric layer of 50 to 200 g / m 2 of composite fibers is sequentially laminated and needle punched. 제 1 항에 있어서,The method of claim 1, 상기 합섬사 부직포층의 합섬사는 나이론, 폴리에스테르, 폴리프로필렌중 어느 하나 또는 둘이상의 혼합인 것을 특징으로 하는 상기 고기능성 여과용 부직포.The synthetic filament yarn of the synthetic fiber nonwoven layer is any one of nylon, polyester, polypropylene, or a mixture of two or more of the high-performance filtration nonwoven fabric. 제 1 항에 있어서,The method of claim 1, 상기 해도형 복합섬유의 분할전 단사섬도는 2 내지 5 데니어, 분할후 단사섬도는 0.001 내지 0.1 데니어인 것을 특징으로 하는 상기 고기능성 여과용 부직포.The single yarn fineness of the island-in-the-sea composite fiber before splitting is 2 to 5 deniers, and the single yarn fineness after splitting is 0.001 to 0.1 denier. 제 1 항에 있어서,The method of claim 1, 상기 해도형 복합섬유 부직포층에 금속 섬유 또는 탄소를 함유한 제전성 섬유로 된 도전성 섬유를 함유시킨 것을 특징으로 하는 상기 고기능성 여과용 부직포.The non-woven fabric for high performance filtration, wherein the island-in-the-sea composite fiber nonwoven layer contains conductive fibers made of metal fibers or antistatic fibers containing carbon. 500 내지 1500 데니어로 된 합섬사 부직포층위에 폴리에스테르 단사 섬도 3 내지 10 데니어의 단섬유 또는 장섬유로 이루어지고 200 내지 500 g/㎡의 중량을 가지는 후물 부직포를 적층시키고 니들펀칭하여 결합시키는 제 1 과정;A first yarn for laminating and needle punching a thick nonwoven fabric composed of 3 to 10 denier short fibers or long fibers having a weight of 200 to 500 g / m 2 on a synthetic filament nonwoven layer having 500 to 1500 deniers. process; 상기 제조된 부직포의 합섬사 부직포층위에 분할전 단사섬도가 2 내지 5 데니어인 해도형 복합 섬유로 된 50 내지 200 g/㎡의 부직포를 적층시키고 니들펀칭하는 제 2 과정;A second process of laminating and needle punching a nonwoven fabric of 50 to 200 g / m 2 made of island-in-the-sea composite fiber having a single yarn fineness of 2 to 5 deniers prior to division on the synthetic filament yarn nonwoven fabric layer of the nonwoven fabric; 제조된 다층 부직포를 감량하여 복합 섬유 부직포층내의 복합 섬유의 해(海)성분을 용출해냄으로써 분리, 분할한 후 단사섬도를 0.001 내지 0.1 데니어 수준으로 하는 제 3 과정; 및A third process of reducing the multi-layered nonwoven fabric to produce a single yarn fineness of 0.001 to 0.1 denier after separation and division by eluting sea component of the composite fiber in the composite fiber nonwoven layer; And 결과되는 부직포를 가스 신징(Gas Singeing)하고 발수 가공하는 제 4 과정;A fourth process of gas singing and water repelling the resulting nonwoven fabric; 으로 이루어지는 것을 특징으로 하는 고기능성 여과용 부직포의 제조 방법.Method for producing a non-woven fabric for high performance filtration, characterized in that consisting of.
KR1019960048939A 1996-10-26 1996-10-26 Non-woven fabric for filter KR100196031B1 (en)

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KR100367819B1 (en) * 2000-09-14 2003-01-24 주식회사 세원지오신테크 Non-woven fabric geotextile with excellent permeability under high load
KR20020054882A (en) * 2000-12-28 2002-07-08 한형수 Method for manufacturing multilayer filter having enhanced filterability
KR100438331B1 (en) * 2001-10-18 2004-07-01 (주)크린앤사이언스 A manufacturing method and a material of filtering inflow air for engine
KR20050046872A (en) * 2003-11-14 2005-05-19 주식회사 중외엔비텍 Multi air filters for mist collecting apparatus and zigzag structure for collecting mist by using them
KR101130736B1 (en) * 2009-02-17 2012-03-28 오원이 Anti-static nonwoven felt for air dust filtering
KR101230248B1 (en) * 2010-11-10 2013-02-07 (주)에어릭스 Anto-static nonwoven felt with fine fibers for dust collecting filter
KR101230249B1 (en) * 2010-11-10 2013-02-07 (주)에어릭스 Anto-static nonwoven felt with superfine fibers for dust collecting filter
KR101434183B1 (en) * 2011-12-29 2014-08-29 도레이케미칼 주식회사 Activated Carbon Sheet, Filter Cartridge for Water Purification Using the Same and Manufacturing Method thereof

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