KR100373623B1 - The manufacturing devices of dirty water, waste water and sewage treatment filter for microbe contact - Google Patents
The manufacturing devices of dirty water, waste water and sewage treatment filter for microbe contact Download PDFInfo
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- KR100373623B1 KR100373623B1 KR10-2000-0041497A KR20000041497A KR100373623B1 KR 100373623 B1 KR100373623 B1 KR 100373623B1 KR 20000041497 A KR20000041497 A KR 20000041497A KR 100373623 B1 KR100373623 B1 KR 100373623B1
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- South Korea
- Prior art keywords
- extrusion
- compressed air
- main body
- sewage treatment
- extruder
- Prior art date
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- 239000002351 wastewater Substances 0.000 title claims abstract description 5
- 239000010865 sewage Substances 0.000 title claims abstract description 4
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title description 2
- 238000001125 extrusion Methods 0.000 claims abstract description 27
- 238000010438 heat treatment Methods 0.000 claims abstract description 10
- 244000005700 microbiome Species 0.000 claims abstract description 10
- 238000002347 injection Methods 0.000 claims abstract description 7
- 239000007924 injection Substances 0.000 claims abstract description 7
- 238000001816 cooling Methods 0.000 claims description 9
- 238000005520 cutting process Methods 0.000 claims description 4
- 238000000465 moulding Methods 0.000 abstract description 13
- 239000002699 waste material Substances 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000000813 microbial effect Effects 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 239000000155 melt Substances 0.000 description 3
- -1 polypropylene Polymers 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 2
- 230000004913 activation Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000010000 carbonizing Methods 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 235000012438 extruded product Nutrition 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 239000010903 husk Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0022—Combinations of extrusion moulding with other shaping operations combined with cutting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0018—Combinations of extrusion moulding with other shaping operations combined with shaping by orienting, stretching or shrinking, e.g. film blowing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/911—Cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/04—Condition, form or state of moulded material or of the material to be shaped cellular or porous
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0037—Other properties
- B29K2995/0072—Roughness, e.g. anti-slip
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/14—Filters
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Biological Treatment Of Waste Water (AREA)
Abstract
본 발명은 표면이 거칠고 내면에는 수많은 공극이 형성되어 오, 폐수 및 하수처리에 필요한 미생물들이 잘 달라붙어 자랄수있는 여재의 제조장치에 관한 것이다.The present invention relates to an apparatus for producing a medium having a rough surface and numerous voids formed on the inner surface thereof, so that microorganisms necessary for wastewater and sewage treatment can easily adhere to and grow.
본발명은 통상적인 압출장치에 있어서, 압출금형(6)과 가열장치(4)사이에 압출기본체(5)의 둘레를 따라 공기실 (11)이 형성된 압축공기 탱크(10)를 구성하고, 공기실(11)과 접하고있는 압출기 본체(5)의 둘레에는 압출기 내부와 연통하는 다수개의 분사구멍(12)을 천공 하고 압축 공기탱크(10) 외부에는 압축공기 주입구(13)를 마련하여서, 압출금형(6)쪽으로 이송되는 용융 성형물(20)에 압출기 본체(5)에 형성된 분사구멍(12)을 통하여 압축공기를 공급하여 용융성형물에 수많은 기포가 형성되게 하고, 압출금형(6)의 압출구멍(15)을 용융성형물이 압축공기와 함께 압출되게 하여, 성형되는 여재는 엉성하며 수많은 기포가 발생함은 물론 표면이 매우거칠게 형성됨을 특징으로하는 것이다.The present invention, in a conventional extrusion apparatus, constitutes a compressed air tank (10) in which an air chamber (11) is formed along the circumference of the extrusion main body (5) between the extrusion mold (6) and the heating apparatus (4), and air A plurality of injection holes 12 communicating with the inside of the extruder are drilled around the extruder main body 5 in contact with the seal 11, and a compressed air inlet 13 is provided outside the compressed air tank 10 to extrude the mold. The compressed air is supplied to the molten molding 20 conveyed to (6) through the injection hole 12 formed in the extruder main body 5 so that numerous bubbles are formed in the molten molding, and the extrusion hole of the extrusion mold 6 ( 15) is characterized in that the molten molding is extruded together with the compressed air, the forming medium is loose and numerous bubbles are generated as well as the surface is very rough.
Description
본 발명은 표면이 거칠고 내면에는 수많은 공극이 형성되어 오, 폐수 및 하수처리에 필요한 미생물들이 잘 달라붙어 자랄수있는 여재의 제조장치에 관한 것이다.The present invention relates to an apparatus for producing a medium having a rough surface and numerous voids formed on the inner surface thereof, so that microorganisms necessary for wastewater and sewage treatment can easily adhere to and grow.
종래 미생물의 생존공간을 제공하여 각종 유기물을 분해하여 정화하는 미생물 접촉 여재로는 대한민국 특허공보 제95-2547호가 있다. 이 선행기술은 폐합성수지를 주원료로하고 여기에 석분, 활성탄, 여과사등의 부재료를 혼합 분쇄하고, 이를 고온에서 용융하면서 불순물을 탄화시킨후 곧바로 압출냉각시켜 미생물 접촉 여과제를 성형하는 기술이다.There is a Republic of Korea Patent Publication No. 95-2547 as a microbial contact medium for decomposing and purifying various organic substances by providing a living space of the conventional microorganisms. This prior art is a technique for forming a microbial contact filter by waste synthetic resin as a main raw material, and mixed and pulverized raw materials such as stone powder, activated carbon, and filtered sand, and carbonizing the impurities while melting them at high temperature, followed by extrusion cooling.
그러나 이와같은 종래기술은 주재료가 폐비닐이고 고온에서 용융한후 바로 압출하기 때문에 용융물이 덩어리를 형성하게되어 최종압출시 조직 내부까지 기공이 생기지 않으며 표면 역시 미생물이 쉽게 달라붙어 층을 형성하기에는 너무 매끄럽게 형성되므로 미생물이 성장할수 있는 공간이 부족하고 또 미생물이 쉽게 탈리되는 문제가 있으며, 석분이나 활성탄의 과다 사용으로 인하여 쉽게 깨지고 또한 여러가지 부재를 사용하여 제조하여야 하므로 번거롭고 연속적인 압출성형시 성형속도가 늦어 여과제의 생산성이 낮은 단점이 있었다.However, since the main material is waste vinyl and melts at a high temperature, it is extruded immediately so that the melt forms a mass, so that pores do not form inside the tissue at the final extrusion, and the surface is too smooth to form a layer because microorganisms easily stick together. Since it is formed, there is a problem of lack of space for microorganisms to grow, and microorganisms are easily detached, and it is easily broken due to excessive use of stone powder or activated carbon and also needs to be manufactured using various members. There was a disadvantage of low productivity of the filter.
또다른 선행기술로는 대한민국특허 제0182656호 가 있다. 이는 전술한 선행기술의 문제점들을 해결하기 위한 기술로서, 표면과 내면이 얼기 설기한 섬유상 재질로 많은 공극이 형성되므로서 부재의 내부를 포함한 양측 표면으로 혐기성 및 호기성 미생물이 잘 달라붙고 탈리되지 아니하며 성장할수 있는 미생물접촉 여과재의 제조방법을 제공하고 있다.Another prior art is Korean Patent No. 082656. This is a technique for solving the above-mentioned problems of the prior art, and the anaerobic and aerobic microorganisms adhere well to both surfaces including the inside of the member and grow without being detached due to the formation of many pores of the fibrous material whose surface and inner surface are frozen. It provides a method for producing a microbial contact filter medium.
이 선행기술의 핵심내용은 곡물용 마대등의 폴리프로필렌 폐기물을 180℃ 내지 300℃ 에서 용융시켜 덩어리로 형성하여 냉각시키는 공정과, 용융된 폐폴리프로필렌 덩어리를 직경 2-15mm로 파쇄하는 공정과, 파쇄물을 스크류 압출기에 넣어 가열장치로 열을 가해 초기온도를 200℃ 내지 300℃ 로 가열하여 밀어내면서 출구온도가 45℃ 내지 55℃ 로 유지하도록 압출하는 공정과, 상기 출구온도 조건의 압출물을 성형금형을 통과시켜 원하는 단면형상을 갖도록 성형하는 공정과, 통상의 인출공정 및 절단공정을 가짐을 특징으로 하고 있다. 그러나 이 선행기술에서 가장 핵심기술에 해당하는 것은, 압출출구에 수냉 또는 공냉에 의한 강제냉각장치 를 설치하여초기단계에서 가열장치를 통해 200℃ 내지 300℃ 로 서서히 압출하며 압출출구 단계에서는 성형물의 온도가 45℃ 내지 55℃ 가 유지되게하는 것인데, 실제 압출출구의 온도를 45℃ 내지 55℃ 가 되게할 경우 성형물은 이미 거의 완전하게 굳은 상태이므로 압출이 제대로 이루어지지 않는 문제가 있어 실제로 이용이 되지를 않고있다.The core contents of this prior art are a process for melting polypropylene wastes such as grain sacks at 180 ° C to 300 ° C to form agglomerates and cooling them, and crushing the molten waste polypropylene agglomerates with a diameter of 2-15 mm, Exposing the crushed material to a screw extruder and applying heat with a heating device to extrude the heated material at 200 ° C. to 300 ° C. to push the initial temperature to 45 ° C. to 55 ° C., and to form the extrudate under the exit temperature condition. It is characterized by having a step of forming a desired cross-sectional shape by passing the mold, and a usual drawing process and cutting process. However, the core technology of this prior art is to install a forced cooling device by water cooling or air cooling at the extrusion exit, and gradually extrudes from 200 ° C to 300 ° C through the heating device in the initial stage, and the temperature of the molding in the extrusion exit step. Is to maintain 45 ℃ to 55 ℃, when the actual temperature of the extrusion exit is 45 ℃ to 55 ℃ the molding is already almost completely solid, so there is a problem that the extrusion does not work properly, Without.
본 발명은 상기와 같은 종래 기술들의 문제점을 감안하여 안출한 것으로서, 압출출구의 온도를 낯추지 않고, 압출출구를 통과하는 용융 성형물의 내부에 압축공기를 지속적으로 불어넣어 공기와 용융 성형물이 뒤섞여서 압축노즐을 통과하면서 압출성형물의 전체에 미세한 공극이 형성되고 또한 표면이 거칠게 형성되도록하여 미생물이 잘 달라붙고 탈리되지 아니하는 여재를 제조 할수있는 장치를 제공하려는 것이다.The present invention has been made in view of the problems of the prior art as described above, by continuously blowing the compressed air into the molten molding passing through the extrusion outlet without reducing the temperature of the extrusion exit, the air and the molten molding are mixed The purpose of the present invention is to provide a device capable of producing a medium in which micropores adhere well and are not detached by forming micro voids and rough surfaces on the whole of the extruded product while passing through the compression nozzle.
도 1은 본발명 장치의 전체 구성도.1 is an overall configuration diagram of the present invention device.
도 2는 본발명 장치의 요부 확대도.2 is an enlarged view of main parts of the present invention.
도 3은 압축공기탱크 부분의 단면도.3 is a sectional view of a part of the compressed air tank.
도 4는 본발명에 의해 제조된 여재의 단면도.4 is a cross-sectional view of the media produced by the present invention.
<주요 도면부호의 설명><Description of Major Reference Signs>
1 : 호퍼1: Hopper
3 : 이송스크류3: feed screw
4 : 가열장치4: heating device
5 : 본체5: body
6 : 압출금형6: extrusion mold
7 : 냉각부7: cooling part
8 : 인발기8: drawing machine
10 : 압축공기탱크10: compressed air tank
11 : 공기실11: air chamber
12 : 분사구멍12: injection hole
13 : 주입구13: injection hole
본 발명의 제조장치는 제1도와같이 구성된다. 즉, 이송스크류(3)와 모터(2) 및 호퍼(1)등으로 구성되고 가열장치(4)와 압출금형(6)이 장착되었으며, 이와 일직선상으로는 냉각부(7)와 인발기(8) 그리고 컷팅기(9)가 설치된 통상적인 압출기에 있어서, 압출금형(6)과 가열장치(4)사이에 압출기본체(5)의 둘레를 따라 공기실(11)이 형성된 압축공기 탱크(10)를 구성하고, 공기실(11)과 접하고있는 압출기 본체(5)의 둘레에는 압출기 내부와 연통하는 다수개의 분사구멍(12)을 천공하고 압축공기탱크(10) 외부에는 압축공기 주입구(13)를 마련하였다.The manufacturing apparatus of the present invention is configured as shown in FIG. That is, it consists of a feed screw (3), a motor (2) and a hopper (1), and is equipped with a heating device (4) and an extrusion mold (6), in a straight line with the cooling unit (7) and the drawer (8) In the conventional extruder provided with the cutting machine (9), the compressed air tank (10) is formed between the extrusion mold (6) and the heating device (4) in which the air chamber (11) is formed along the circumference of the extrusion main body (5). In addition, a plurality of injection holes 12 communicating with the inside of the extruder were drilled around the extruder main body 5 in contact with the air chamber 11, and a compressed air inlet 13 was provided outside the compressed air tank 10. .
상기와같은 장치로서 여재를 제조하는 방법은 다음과 같다.The method of manufacturing a media by such an apparatus is as follows.
본발명에서는 분쇄된 폴리에탄 및 폴리에틸렌계의 폐자재(4:6 비율)와 미생물 활성화의 촉진에 효과가 있는 소량의 플라이애쉬 및 숫가루, 흙, 왕겨, 종균제 등 (약5%이하)을 사용한다.In the present invention, crushed polyethane and polyethylene waste materials (4: 6 ratio) and a small amount of fly ash and flour, soil, rice husk, spawning agent (about 5% or less), which are effective for promoting microbial activation, use.
상기 원재료를 장치의 호퍼(1)에 투입하면 이송스크류(3)의 회전에 의하여 원재료는 전방으로 압출되며 가열장치(4)에서 가열되어 용융된다. 이때 가열장치의 입구에서의 용융 성형물의 온도는 200℃ - 250℃ 정도이고 중간부분 에서는 250℃ -300℃를 유지하게 된다. 또한 출구 즉, 압출금형(6)쪽으로 이송되는 용융성형물(20)에는 분사구멍(12)을 통하여 압축공기탱크(10)내부로 유입되는 압축공기가 공급된다. 따라서 용융성형물에는 수많은 기포가 발생됨은 물론 압출금형(6)의 압출구멍(15) 을 통해 압출될때에는 압축공기에 의하여 용융성형물이 매우 불규칙하게 압출되고, 압출되는 순간에는 압축공기가 빠저나가면서 성형물을 부풀리어 주므로 자연히 압출구멍을 통과하며 성형되는 여재는 엉성하며 수많은 기포가 발생함은 물론 표면이 매우거칠게 형성된다. 이때 압출금형을 통과하기 직전의 용융성형물의 온도는 약 200-250℃ 정도이다.When the raw material is introduced into the hopper 1 of the device, the raw material is extruded forward by the rotation of the transfer screw 3 and is heated and melted in the heating device 4. At this time, the temperature of the molten molding at the inlet of the heating apparatus is about 200 ℃-250 ℃ and maintains 250 ℃ -300 ℃ in the middle part. In addition, the compressed air flowing into the compressed air tank 10 through the injection hole 12 is supplied to the molten molding 20 which is transferred to the outlet, that is, the extrusion mold 6. Therefore, the molten molding is not only numerous bubbles are generated, but also when the extrusion through the extrusion hole 15 of the extrusion mold (6), the melt molding is very irregularly extruded by the compressed air, at the moment the extruded air escapes the molding Since the bulge naturally passes through the extrusion hole, the formed media is rough and numerous bubbles are generated, as well as the surface is very rough. At this time, the temperature of the molten molding immediately before passing through the extrusion mold is about 200-250 ℃.
이와같이 압출 되어지는 여재는 계속하여 냉각부(7)를 통과하며 냉각되어지고 인발기(8)에서 늘려지며 컷팅기(9)에서 필요한 길이로 절단되어 여재가 완성되는 것이다.The media to be extruded as described above continue to pass through the cooling unit 7 to be cooled, stretched in the drawer 8 and cut to the required length in the cutting machine 9 to complete the media.
이에따라 본 제조방법에 의하여 제조되는 여재는 전체적으로 그 조직이 엉성하여 기공성이 높고, 내 외부 표면이 매우 거칠어 미생물이 잘 달라붙고 탈리되지 않는 특징이 있다.Accordingly, the media produced by the present manufacturing method is characterized in that its overall structure is poor in porosity, the outer surface is very rough, microorganisms stick well and do not detach.
이상과같은 본발명에 의하여 제조되는 여재는, 전체적으로 그 조직이 엉성하여 기공성이 높고, 내 외부 표면이 매우 거칠기 때문에 미생물이 잘 달라붙고 탈리되지 않는 특징이있어 오, 폐수중의 유기물을 분해하여 산화시키는 기능이 탁월하고, 오니의 활성화를 촉진시키는 재질로서 농촌에서 쉽게 구할수있는 폐자재를 사용하므로서 환경오염도 예방할수 있는 장점이 있다The media produced by the present invention as described above are characterized by poor microorganisms and poor detachment of the organic matter in the wastewater due to their poor porosity due to their overall structure and high surface roughness. Excellent function of oxidizing and promoting the activation of sludge, it has the advantage of preventing environmental pollution by using waste materials which are easily available in rural areas.
Claims (2)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2000-0041497A KR100373623B1 (en) | 2000-07-20 | 2000-07-20 | The manufacturing devices of dirty water, waste water and sewage treatment filter for microbe contact |
| KR2020000020702U KR200205953Y1 (en) | 2000-07-20 | 2000-07-20 | The manufacturing devices of dirty water, waste water and sewage treatment filter for microbe contact |
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| KR100367007B1 (en) * | 2000-07-27 | 2003-01-09 | 채범석 | Processing method of filter |
| KR20020017284A (en) * | 2000-08-29 | 2002-03-07 | 김창준 | Apparatus for producing bacteria supporting medium |
| KR100475171B1 (en) * | 2003-02-17 | 2005-03-14 | 디에치인터내셔날주식회사 | A filter in a spiral type forming a plurality of prominence and depression in the form of the rib of a fan in turn on surface and manufacturing method and machine therefor |
| KR20160097491A (en) | 2015-02-09 | 2016-08-18 | (주)아이디알 | Portable sprayer with a drug dilution function |
| KR102327742B1 (en) * | 2021-04-14 | 2021-11-17 | 김순연 | Microorganism carrie and method for manufacturing the same |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4180536A (en) * | 1978-03-13 | 1979-12-25 | Celanese Corporation | Process for extruding plasticized open cell foamed cellulose acetate filters |
| JPH05286048A (en) * | 1992-04-16 | 1993-11-02 | Idemitsu Petrochem Co Ltd | Method and apparatus for producing resin foam |
| KR950002547A (en) * | 1993-06-30 | 1995-01-04 | 에이. 죤슨 데이비드 | Devices for interconnecting electrical contacts |
| KR200171798Y1 (en) * | 1999-09-13 | 2000-03-15 | 윤상진 | Freedom pile manufacture apparatus for microbe contact filter |
| JP2000119432A (en) * | 1998-10-12 | 2000-04-25 | Sekisui Chem Co Ltd | Manufacture of olefinic porous film |
-
2000
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4180536A (en) * | 1978-03-13 | 1979-12-25 | Celanese Corporation | Process for extruding plasticized open cell foamed cellulose acetate filters |
| JPH05286048A (en) * | 1992-04-16 | 1993-11-02 | Idemitsu Petrochem Co Ltd | Method and apparatus for producing resin foam |
| KR950002547A (en) * | 1993-06-30 | 1995-01-04 | 에이. 죤슨 데이비드 | Devices for interconnecting electrical contacts |
| JP2000119432A (en) * | 1998-10-12 | 2000-04-25 | Sekisui Chem Co Ltd | Manufacture of olefinic porous film |
| KR200171798Y1 (en) * | 1999-09-13 | 2000-03-15 | 윤상진 | Freedom pile manufacture apparatus for microbe contact filter |
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| KR200205953Y1 (en) | 2000-12-01 |
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