KR100898856B1 - Roll?form plate heater and method for manufacturing the same - Google Patents
Roll?form plate heater and method for manufacturing the same Download PDFInfo
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- KR100898856B1 KR100898856B1 KR1020070048169A KR20070048169A KR100898856B1 KR 100898856 B1 KR100898856 B1 KR 100898856B1 KR 1020070048169 A KR1020070048169 A KR 1020070048169A KR 20070048169 A KR20070048169 A KR 20070048169A KR 100898856 B1 KR100898856 B1 KR 100898856B1
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- conductive carbon
- carbon paper
- heating element
- planar heating
- nonwoven fabric
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 14
- 238000000034 method Methods 0.000 title claims abstract description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 86
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 86
- 229920000728 polyester Polymers 0.000 claims abstract description 43
- -1 polypropylene Polymers 0.000 claims abstract description 41
- 239000004840 adhesive resin Substances 0.000 claims abstract description 40
- 229920006223 adhesive resin Polymers 0.000 claims abstract description 40
- 239000004743 Polypropylene Substances 0.000 claims abstract description 38
- 229920001155 polypropylene Polymers 0.000 claims abstract description 38
- 238000010438 heat treatment Methods 0.000 claims abstract description 36
- 239000004745 nonwoven fabric Substances 0.000 claims abstract description 35
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000011889 copper foil Substances 0.000 claims abstract description 32
- 230000001070 adhesive effect Effects 0.000 claims abstract description 28
- 239000000853 adhesive Substances 0.000 claims abstract description 27
- 238000010030 laminating Methods 0.000 claims abstract description 10
- 239000000155 melt Substances 0.000 claims abstract description 9
- 239000000203 mixture Substances 0.000 claims abstract description 7
- 238000002156 mixing Methods 0.000 claims abstract description 6
- 238000002844 melting Methods 0.000 claims abstract description 5
- 230000008018 melting Effects 0.000 claims abstract description 5
- 229920001131 Pulp (paper) Polymers 0.000 claims abstract description 3
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 3
- 239000000057 synthetic resin Substances 0.000 claims abstract description 3
- 239000011248 coating agent Substances 0.000 claims description 55
- 238000000576 coating method Methods 0.000 claims description 36
- 239000002904 solvent Substances 0.000 claims description 15
- 238000001035 drying Methods 0.000 claims description 12
- 229920005989 resin Polymers 0.000 claims description 12
- 239000011347 resin Substances 0.000 claims description 12
- 239000003795 chemical substances by application Substances 0.000 claims description 9
- 239000004925 Acrylic resin Substances 0.000 claims description 5
- 229920000178 Acrylic resin Polymers 0.000 claims description 5
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 5
- 239000011230 binding agent Substances 0.000 claims description 5
- 229920000123 polythiophene Polymers 0.000 claims description 5
- 239000002105 nanoparticle Substances 0.000 claims description 4
- 239000002994 raw material Substances 0.000 claims description 4
- 229920001684 low density polyethylene Polymers 0.000 claims description 3
- 239000004702 low-density polyethylene Substances 0.000 claims description 3
- 229920002589 poly(vinylethylene) polymer Polymers 0.000 claims description 3
- 229920005633 polypropylene homopolymer resin Polymers 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 229920005604 random copolymer Polymers 0.000 claims description 2
- 239000004848 polyfunctional curative Substances 0.000 claims 2
- 239000012943 hotmelt Substances 0.000 abstract description 4
- 239000004831 Hot glue Substances 0.000 abstract description 3
- 239000005038 ethylene vinyl acetate Substances 0.000 abstract description 3
- 238000013021 overheating Methods 0.000 abstract description 3
- 239000000758 substrate Substances 0.000 abstract description 3
- 239000004698 Polyethylene Substances 0.000 abstract description 2
- 229920006267 polyester film Polymers 0.000 abstract description 2
- 229920000573 polyethylene Polymers 0.000 abstract description 2
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 15
- 239000010410 layer Substances 0.000 description 8
- 239000007788 liquid Substances 0.000 description 6
- 239000000047 product Substances 0.000 description 5
- 239000011810 insulating material Substances 0.000 description 4
- 238000003475 lamination Methods 0.000 description 4
- 229920001187 thermosetting polymer Polymers 0.000 description 4
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 229920001940 conductive polymer Polymers 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical compound C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000010292 electrical insulation Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000002075 main ingredient Substances 0.000 description 2
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- HTRXGEPDTFSKLI-UHFFFAOYSA-N butanoic acid;ethyl acetate Chemical compound CCCC(O)=O.CCOC(C)=O HTRXGEPDTFSKLI-UHFFFAOYSA-N 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 229920006379 extruded polypropylene Polymers 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002987 primer (paints) Substances 0.000 description 1
- 239000013557 residual solvent Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
- H05B3/34—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater flexible, e.g. heating nets or webs
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
- H05B3/12—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
- H05B2203/013—Heaters using resistive films or coatings
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
- H05B2203/016—Heaters using particular connecting means
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
- H05B2203/017—Manufacturing methods or apparatus for heaters
Landscapes
- Surface Heating Bodies (AREA)
- Resistance Heating (AREA)
Abstract
본 발명은 롤 형태의 고온 면상발열체 및 그 제조방법에 관한 것으로서, 보다 구체적으로는 제지용 펄프나 폴리에스테르계 합성수지 또는 그 혼합물에 카본사를 혼합하여 만든 종이형태의 도전성 카본지의 양면을 절연기재인 폴리에스테르 부직포로 합지하여 제조되는 면상발열체에 있어서, 도전성 카본지와 폴리에스테르 부직포 사이에 폴리프로필렌 접착수지를 용융압출기에서 녹여 티다이를 통해 압출하면서 도전성 카본지와 폴리에스테르 부직포를 롤 상태로 합지한 고온 면상발열체 및 그 제조방법에 관한 것이다.The present invention relates to a high-temperature planar heating element in the form of a roll, and more particularly, to an insulating substrate, on both sides of a paper-like conductive carbon paper made by mixing carbon yarn in a paper pulp, a polyester-based synthetic resin, or a mixture thereof. In the planar heating element manufactured by laminating a polyester nonwoven fabric, a high temperature planar heating element in which a conductive carbon paper and a polyester nonwoven fabric are laminated in a roll state while melting a polypropylene adhesive resin between a conductive carbon paper and a polyester nonwoven fabric in a melt extruder and extruding it through a T-die. And to a method for producing the same.
본 발명에 따르면, 기존에 에틸렌비닐아세테이트(EVA, Ethylene Vinyl Acetate) 접착수지나 폴리에틸렌 접착수지가 코팅된 핫멜트용 폴리에스테르 필름과 도전성 카본지를 오프라인(Off―line)에서 핫멜트 접착방식으로 합지할 경우 나타나는 접착제의 내열성 부족, 국부과열이나 방전현상 등의 문제를 해결할 수 있고, 또한 100℃ 정도의 고온이 필요한 응용분야에 안심하고 사용할 수 있다.According to the present invention, a polyester film for hot melt coated with an ethylene vinyl acetate (EVA) adhesive resin or a polyethylene adhesive resin and a conductive carbon paper, which are present when laminating by hot melt adhesive method offline (off-line) Problems such as lack of heat resistance of adhesives, local overheating and discharge phenomenon can be solved, and it can be used safely in applications requiring a high temperature of about 100 ° C.
면상발열체, 도전성 카본, 폴리프로필렌, 동박전극, 고온 Planar heating element, conductive carbon, polypropylene, copper foil electrode, high temperature
Description
도 1은 본 발명에 따른 롤 형태의 고온 면상발열체의 단면도이다.1 is a cross-sectional view of a high-temperature planar heating element in the form of a roll according to the present invention.
도 2는 본 발명에 따른 고온 면상발열체의 제조설비단면도이다.2 is a cross-sectional view of a manufacturing facility of a high temperature planar heating element according to the present invention.
도 3은 티다이방식의 합지설비 중 앵카코팅설비 단면도이다.Figure 3 is a cross-sectional view of the anchor coating equipment of the Ti-die type laminating equipment.
* 도면의 주요부분에 대한 부호의 설명 * Explanation of symbols for main parts of the drawings
11 : 폴리에스테르 부직포 12 : 폴리프로필렌 접착수지층11: polyester nonwoven fabric 12: polypropylene adhesive resin layer
13 : 동박전극 14 : 도전성접착층13
15 : 도전성 카본지 16 : 폴리프로필렌 접착수지층15
17 : 폴리에스테르 부직포 17 polyester nonwoven fabric
21 : 1급지 22 : 앵카코팅장치 23 : 건조로21: 1st feed 22: Anca coating device 23: drying furnace
24 : 용융압출기 25 : 티다이 26 : 2급지24: melt-extruder 25: TiDai 26: 2 paper feed
27 : 냉각롤 28 : 와인더 31 : 코팅액받이 27: cooling roll 28: winder 31: coating liquid receiving
32 : 닥터블레이드 33 : 코팅 롤 34 : 앵카코팅액32: doctor blade 33: coating roll 34: anchor coating liquid
본 발명은 롤 형태의 고온 면상발열체 및 그 제조방법에 관한 것으로, 더욱 상세하게는 제지용 펄프나 폴리에스테르계 합성수지 또는 그 혼합물에 카본사를 혼합하여 만든 종이형태의 도전성 카본지의 양면을 폴리에스테르 부직포로 합지할 때 폴리프로필렌 접착수지를 용융압출기에서 250∼350℃정도의 충분한 열로 녹여 티다이를 통해 압출하면서 도전성 카본지와 폴리에스테르 부직포를 직접 합지함으로써 최고 장기사용 가능온도가 105℃인 롤 형태의 고온 면상발열체 및 그 제조방법에 관한 것이다.The present invention relates to a high-temperature planar heating element in the form of a roll and a method of manufacturing the same. More specifically, both sides of a paper-type conductive carbon paper made by mixing a carbon yarn in a paper pulp, a polyester-based synthetic resin or a mixture thereof are polyester nonwoven fabrics. When the polypropylene adhesive resin is melted in a melt extruder with sufficient heat of 250 ~ 350 ℃ and extruded through TiDy, the conductive carbon paper and polyester nonwoven fabric are directly laminated, so that the long-term usable temperature is 105 ℃. A heating element and a method of manufacturing the same.
기존에는 카본사, 또는 액상카본을 함침한 종이형태의 도전성 카본지를 절연필름으로 합지하기 위해서는 도전성 카본지와 절연필름을 접착할 때 접착제로 사용되는 에틸렌비닐아세테이트 접착수지, 또는 폴리에틸렌 접착수지가 코팅된 합지용 핫멜트 절연필름을 오프라인에서 핫멜트 접착방식으로 합지하여 롤 형태의 면상발열체로 만들었는데, 이때 에틸렌비닐아세테이트(ethylenevinylacetate) 수지는 접착은 잘되지만 내열성이 부족하고, 폴리에틸렌(polyethylene) 수지는 내열성은 있으나 접착력이 떨어져 두 제품 모두 최고 장기사용 가능온도가 약 50℃ 밖에 되지 않기 때문에 약간의 집열현상에도 접착제가 녹거나 절연필름과 도전성 카본지가 분리되면서 그 부위에서 산화가 진행되어 국부과열이나 방전현상이 일어나서 화재가 발생할 위험이 매우 높았다.Conventionally, in order to bond the conductive carbon paper in the form of carbon, or paper impregnated with liquid carbon, as an insulating film, an ethylene vinyl acetate adhesive resin used as an adhesive when bonding the conductive carbon paper and the insulating film, or a polyethylene coated resin coated paper The hot melt insulation film for lamination was made into a planar heating element in the form of a roll by laminating by hot melt adhesive method. In this case, the maximum long-term use temperature of both products is about 50 ℃, so even after slight heat collection, the adhesive melts or the insulating film and the conductive carbon paper are separated, and oxidation occurs at the site, causing local overheating or discharge. Were very at risk All.
이에, 본 발명자들은 도전성 카본지와 폴리에스테르 부직포를 접착시키기 위해 내열성 접착수지인 폴리프로필렌 접착수지를 용융압출기에서 녹여 티다이로 압 출하면서 직접 도전성 카본지와 폴리에스테르 부직포를 합지시키는 기술을 적용한 면상발열체를 제조하게 되었고, 본 발명은 이를 기초로 완성되었다.Accordingly, the present inventors have applied a planar heating element to which a conductive carbon paper and a polyester nonwoven fabric are directly applied while melting a polypropylene adhesive resin, which is a heat-resistant adhesive resin, in a melt extruder and extruded with a T-die in order to bond the conductive carbon paper and a polyester nonwoven fabric. The present invention has been completed based on this.
따라서, 본 발명의 목적은 고온이 요구되는 응용분야에서 적용될 수 있는 롤 형태의 고온 면상발열체를 제공하는 데 있다.Accordingly, an object of the present invention is to provide a high-temperature planar heating element in the form of a roll that can be applied in applications requiring a high temperature.
상기 목적을 달성하기 위한 본 발명에 따른 롤 형태의 고온 면상발열체는, High temperature planar heating element in the form of a roll according to the present invention for achieving the above object,
도전성 카본지의 일면에 폴리프로필렌 접착수지 및 폴리에스터 부직포가 접착되어 있고, 상기 도전성 카본지의 다른 일면에 동박 전극, 폴리프로필렌 접착수지 및 폴리에스터 부직포가 순차적으로 접착된 것을 특징으로 한다.A polypropylene adhesive resin and a polyester nonwoven fabric are bonded to one surface of the conductive carbon paper, and a copper foil electrode, a polypropylene adhesive resin, and a polyester nonwoven fabric are sequentially bonded to the other surface of the conductive carbon paper.
또한, 본 발명의 다른 목적은 상기 롤 형태의 고온 면상발열체의 제조방법을 제공하는 데 있다.In addition, another object of the present invention to provide a method for producing a high temperature planar heating element in the form of a roll.
상기 다른 목적을 달성하기 위한 본 발명에 따른 고온 면상발열체의 제조방법은, Method for producing a high temperature planar heating element according to the present invention for achieving the above another object,
ⅰ) 원부재료로 도전성 카본지, 폴리에스테르 부직포, 폴리프로필렌 접착수지, 동박전극, 앵카코팅제를 제공하는 단계;Iii) providing conductive carbon paper, polyester nonwoven fabric, polypropylene adhesive resin, copper foil electrode and anca coating agent as raw materials;
ⅱ) 상기 도전성 카본지의 양명에 앵카코팅을 하는 단계;Ii) performing anca coating on both surfaces of the conductive carbon paper;
ⅲ) 상기 도전성 카본지의 일면에 폴리프로필렌 접착수지를 이용하여 폴리에스테르 부직포를 합지하는 단계;Iii) laminating a polyester nonwoven fabric using a polypropylene adhesive resin on one surface of the conductive carbon paper;
ⅳ) 상기 도전성 카본지의 다른 일면에 동박전극을 형성시키는 단계; 및Iii) forming a copper foil electrode on the other side of the conductive carbon paper; And
ⅴ) 상기 동박전극이 형성된 도전성 카본지 위에 폴리프로필렌 접착수지를 이용하여 폴리에스테르 부직포를 합지하는 단계; Iii) laminating a polyester nonwoven fabric using a polypropylene adhesive resin on the conductive carbon paper on which the copper foil electrode is formed;
를 포함하는 것을 특징으로 한다.Characterized in that it comprises a.
이하, 본 발명에 대해 보다 구체적으로 설명하고자 한다.Hereinafter, the present invention will be described in more detail.
전술한 바와 같이, 본 발명은 롤 형태의 고온 면상발열체 및 그 제조방법에 관한 것으로서, 기존의 방법의 단점이었던 접착제의 내열성 부족, 국부과열 및 방전현상 등의 문제점을 해결할 수 있고, 또한 100℃ 정도의 고온이 필요한 응용분야에 안심하고 사용할 수 있다. As described above, the present invention relates to a high-temperature planar heating element in the form of a roll, and a method for manufacturing the same, which can solve problems such as lack of heat resistance of the adhesive, local overheating and discharge, which are disadvantages of the conventional method, and also about 100 ° C. Can be used with confidence in applications requiring high temperatures.
본 발명에 따른 고온 면상발열체 및 그 제조방법에 있어서, 핵심적인 기술요소는 다음과 같다.In the high temperature planar heating element and the method of manufacturing the same according to the present invention, key technical elements are as follows.
첫째, 용융압출되는 폴리프로필렌 수지가 도전성 카본지와 폴리에스테르 부직포에 잘 접착이 되도록 접착성이 좋은 폴리프로필렌 수지를 선택하는 것이 중요하다. 본 발명에 의한 면상발열체 생산에 적용되는 폴리프로필렌 접착수지는 주로 접착성이 좋은 랜덤 코폴리머 수지 또는 저밀도 폴리에틸렌이 소량 함유된 호모폴리프로필렌 수지를 사용하는 것이 바람직하다.First, it is important to select a polypropylene resin having good adhesive properties such that the melt-extruded polypropylene resin adheres well to the conductive carbon paper and the polyester nonwoven fabric. The polypropylene adhesive resin applied to the planar heating element production according to the present invention preferably uses a random copolymer resin having good adhesion or a homopolypropylene resin containing a small amount of low density polyethylene.
여기서, 상기 호모폴리프로필렌 수지의 저밀도 폴리에틸렌 함유량은 1 내지 10%이다. Here, the low density polyethylene content of the said homopolypropylene resin is 1 to 10%.
둘째, 도전성 카본지에 폴리프로필렌 수지가 잘 접착이 되도록 앵카코팅을 하는 공정으로서, 이때 중요한 것은 앵카코팅액의 선택과 도전성 카본지에 함유된 수분을 충분히 건조하는 것이다. 상기 앵카코팅은 프라이머 코팅의 일종으로서, 앵카코팅을 함으로써, 카본지와 폴리프로필렌 수지의 접착력을 높일 수 있으며, 종래의 코팅액에 비해 폴리프로필렌 수지와 접착력이 강화될 수 있도록 앵카코팅액을 선택하였다. 앵카코팅제로는 일액형과 이액형 모두 사용할 수 있으며, 일액형은 별도의 경화시간이 필요없는 대신 접착력은 약간 떨어진다. 반면에 이액형은 40∼50℃ 정도의 온도에서 1∼2일 정도의 별도의 경화시간이 필요하지만 경화 후에는 일액형 보다는 접착력이 강하다. Second, the process of anchoring so that the polypropylene resin is adhered to the conductive carbon paper well, it is important to select the anchor coating liquid and to dry the moisture contained in the conductive carbon paper sufficiently. The anchor coating is a kind of primer coating, by performing the anchor coating, it is possible to increase the adhesion between the carbon paper and the polypropylene resin, and to select the anchor coating solution so that the adhesive strength with the polypropylene resin compared to the conventional coating solution. Anka coating agent can be used in both one-component and two-component, one-component type does not require a separate curing time, but the adhesive strength is slightly reduced. On the other hand, the two-component type requires a separate curing time of about 1 to 2 days at a temperature of about 40-50 ° C., but after curing, the two-component type has stronger adhesive strength than the one-component type.
여기서, 일액형 앵카코팅제는 수성 우레탄계로서 그 성분과 조성비로는 1,2-폴리부타디엔(Polybutadiene)이 5 내지 40%, 경화제로 사용되는 에폭시수지가 5 내지 40%, 나머지 20 내지 90%는 용제로서 건조 상황에 따라 물과 메탄올을 적당한 비율로 섞어서 사용한다. 이액형 앵카코팅제는 주제로 폴리에스테르(Polyester)계 접착수지를 사용하며 용제로 사용되는 초산에틸(Ethyl Acetate)과 1:1로 배합된 용액이며, 경화제로는 우레탄 프리폴리머를 사용하며 용제로 사용되는 초산에틸에 1 내지 50%가 배합된 용액이다. 앵카코팅 시에는 주제와 경화제를 용제인 초산에틸에 희석하여 사용하는데 주제와 경화제, 용제의 배합비는 1:1:8로 사용한다. Here, the one-component anca coating agent is an aqueous urethane-based component and composition ratio of 5 to 40% of 1,2-polybutadiene, 5 to 40% of the epoxy resin used as a curing agent, and the remaining 20 to 90% of the solvent As a drying condition, water and methanol may be mixed in an appropriate ratio. The two-component anca coating agent uses polyester adhesive resin as its main material and is a solution mixed with ethyl acetate (Ethyl Acetate), which is used as a solvent, in a 1: 1 ratio, and a urethane prepolymer is used as a curing agent. It is the solution which mix | blended 1-50% with ethyl acetate. In the anchor coating, the main body and the curing agent are diluted in ethyl acetate, which is a solvent, and the mixing ratio of the main body, the curing agent and the solvent is 1: 1: 8.
또한, 도전성 카본지의 양면에 앵카코팅을 한 후 완전히 건조가 되지 않은 상태에서 도전성 카본지와 폴리에스테르 부직포를 합지할 경우에는 도전성 카본지에 함유된 수분으로 인하여 저항이 높아지거나, 심하면 방전현상이 일어날 수도 있으므로 앵카코팅을 한 뒤에 수분을 완전히 건조시키는 것이 매우 중요하다. In addition, when the conductive carbon paper and the polyester nonwoven fabric are laminated after both of the conductive carbon paper is not completely dried, the resistance of the conductive carbon paper may increase due to moisture contained in the conductive carbon paper. It is very important to dry the moisture completely after the anchor coating.
따라서, 건조로의 길이가 짧거나, 코팅속도가 빠를 경우에는 휘발성이 강한 용제의 함량을 올려야 하며, 필요에 따라서는 코팅속도를 낮추거나 한번 더 건조로를 통과하여야 한다. 도전성 카본지에 앵카코팅을 할 때는 그라비아 롤 방식으로 코팅을 하는데, 단면 코팅으로 도전성 카본지의 양면이 코팅되도록 코팅량을 충분히 조정해주는 것이 바람직하며, 건조조건은 길이가 약 5∼10m인 건조로를 120∼150℃로 가열하면서 속도를 20m/min으로 하면 도전성 카본지에 남아있는 수분이 거 의 없어지고 합지 후에 잔류용제나 잔류수분으로 인한 저항편차나 저항의 경시변화 현상이 없다.Therefore, when the length of the drying furnace is short or the coating speed is high, the content of the volatile solvent should be increased, and if necessary, the coating speed should be lowered or passed through the drying furnace once again. When performing anca coating on conductive carbon paper, coating is performed using a gravure roll method. It is preferable to adjust the coating amount sufficiently so that both sides of the conductive carbon paper are coated by single-side coating, and the drying conditions are 120 to about 5 to 10 m in a drying furnace. If the speed is 20m / min while heating to 150 ℃, the moisture remaining in the conductive carbon paper is almost eliminated, and there is no resistance deviation or resistance change due to residual solvent or residual moisture after lamination.
셋째, 전극으로 사용되는 동박이 도전성 카본지에 잘 붙도록 도전성 접착제를 동박전극에 코팅하는 공정으로 동박전극은 인장 강도가 충분한 압연 동박전극을 사용하는 것이 바람직하며, 폭이 약 300㎜ 이상인 동박전극에 도전성 접착제를 코팅하여 필요한 폭으로 절단하여 사용하는데, 이때 도전성 접착제의 성분으로는 전도성 폴리머인 폴리티오펜(Polythiophene)을 약 10∼15%, 나노 크기의 은가루를 약 5∼10% 정도 배합하고, 바인더 수지로 열경화방식의 내열성 아크릴계 수지를 80∼85% 정도 배합하여 페이스트 상태로 동박전극에 코팅을 한다. 도전성 접착제를 코팅한 후에는 경화를 시키는데 경화조건은 약 40℃에서 약 2∼3일이 적당하다.Third, a process of coating a conductive adhesive on the copper foil electrode so that the copper foil used as the electrode adheres well to the conductive carbon paper. The copper foil electrode preferably uses a rolled copper foil electrode having sufficient tensile strength, and the copper foil electrode having a width of about 300 mm or more. The conductive adhesive is coated and cut to the required width. At this time, the conductive adhesive includes polythiophene, a conductive polymer, about 10 to 15%, and nano-sized silver powder about 5 to 10%. The binder resin is blended with 80 to 85% of a thermosetting heat-resistant acrylic resin and coated on the copper foil electrode in a paste state. After coating the conductive adhesive, the curing is performed. The curing conditions are suitably about 2 to 3 days at about 40 ° C.
또한, 본 발명에서는 최종 완제품의 성능과 안전성을 위하여 매우 많은 단계의 합지공정을 거치는데 이때 진행되는 공정순서 또한 중요한 기술과제이다. In addition, in the present invention, for the performance and safety of the final product, a very large number of steps of the lamination process is carried out at this time is also an important technical task.
본 발명에 따른 롤 형태의 고온 면상발열체의 제조공정에 대하여 자세하게 설명하면 다음과 같다.Referring to the manufacturing process of the high-temperature planar heating element in the form of a roll according to the present invention in detail.
ⅰ) 원부재료를 제공하는 단계;Iii) providing raw material;
도 1과 같이 본 발명에 필요한 원부재료로 도전성 카본지, 폴리에스테르 부직포, 폴리프로필렌 접착수지, 동박전극, 앵카코팅제를 생산하고자 하는 규격대로 제공한다.As the raw material required for the present invention as shown in FIG. 1, a conductive carbon paper, a polyester nonwoven fabric, a polypropylene adhesive resin, a copper foil electrode, and an anca coating agent are provided according to a standard to be produced.
ⅱ) 도전성 카본지의 양면에 앵카코팅을 하는 단계;Ii) annealing on both sides of the conductive carbon paper;
일액형, 또는 이액형 앵카코팅제를 상술한 배합비대로 배합하여 도 2의 코팅 액받이에 붓고, 코팅롤에는 코팅액량을 조절하는 도 3의 닥터블레이드를 사용하지 않고, 도전성 카본지의 양면에 코팅액이 충분히 적셔지도록 하여 건조로를 통과하면서 도전성 카본지에 함유된 수분이 충분히 건조가 되도록 온도, 속도, 풍량 등의 조건을 조절한다. 티다이방식의 설비에 설치된 건조로 길이는 보통 5∼10m 정도이며, 온도를 120∼150℃에서 20m/min으로 건조하면 도전성 카본지에 함유된 수분은 거의 건조된 상태로 와인딩이 된다.One-component or two-component anca coating agent is blended in the above-described mixing ratio and poured into the coating liquid receiver of FIG. 2, and the coating roll is sufficiently coated on both sides of the conductive carbon paper without using the doctor blade of FIG. 3 for adjusting the coating liquid amount. Conditions such as temperature, speed, air volume, etc. are adjusted so that the moisture contained in the conductive carbon paper is sufficiently dried while being soaked and passed through the drying furnace. The length of the drying furnace installed in the Ti-die-type equipment is usually about 5 to 10 m, and when the temperature is dried at 120 to 150 ° C. for 20 m / min, the moisture contained in the conductive carbon paper is almost dried.
ⅲ) 도전성 카본지의 일면에 폴리프로필렌 접착수지를 이용하여 폴리에스테르 부직포를 합지하는 단계;Iii) laminating a polyester nonwoven fabric using polypropylene adhesive resin on one surface of the conductive carbon paper;
먼저 도 2의 1급지에 폴리에스테르 부직포를 장착하고, 2급지에 앵카코팅이 된 도전성 카본지를 장착한다. 준비된 폴리프로필렌 접착수지를 250∼350℃ 정도로 충분히 가열된 용융압출기로 투입하면서 녹여서 1급지의 폴리에스테르 부직포와 2급지의 도전성 카본지 사이로 용융된 폴리프로필렌 접착수지를 티다이를 통해 압출하면서 기계속도와 압출량을 조절하여 폴리프로필렌 접착수지층의 목표두께를 맞추는데, 두께는 공정성과 전기절연성을 감안하여 약 150∼200㎛ 정도가 바람직하다.First, the polyester nonwoven fabric is attached to the first paper of FIG. 2, and the conductive carbon paper coated with anca coating is attached to the second paper. The prepared polypropylene adhesive resin was melted while being injected into a melt extruder heated sufficiently at about 250 to 350 ° C., and the melted polypropylene adhesive resin was extruded between the polyester nonwoven fabric of primary paper and the conductive carbon paper of secondary paper through a T-die, and the machine speed and extrusion amount were increased. The thickness of the polypropylene adhesive resin layer is adjusted to meet the target thickness, and the thickness is preferably about 150 to 200 μm in consideration of processability and electrical insulation.
ⅳ) 도전성 카본지의 다른 일면에 동박전극을 형성시키는 단계;Iii) forming a copper foil electrode on the other side of the conductive carbon paper;
폴리에스테르 부직포와 합지된 도전성 카본지의 다른 일면에 폭이 15㎜인 릴 상태의 압연동박전극을 와인딩 설비에 장착하고 도전성 카본지를 리와인딩하면서 도전성 카본지의 양 끝부분에 동박전극을 붙여서 전극을 형성한다. 이때 도전성 카본지에 접착되는 동박전극면에는 도전성 접착제가 코팅되어 있는데, 도전성 접착제의 성분으로는 전도성 폴리머인 폴리티오펜(Polythiophene)을 약 10∼15%, 나노 크 기의 은가루를 약 5∼10% 정도 배합하고, 바인더 수지로 열경화방식의 내열성 아크릴계 수지를 80∼85% 정도 배합하여 페이스트 상태로 동박전극에 코팅을 한다. 도전성 접착제를 코팅한 후에는 경화를 시키는데 경화조건은 약 40℃에서 약 2∼3일이 적당하다.On the other side of the conductive carbon paper laminated with polyester nonwoven fabric, a rolled copper foil electrode having a width of 15 mm is mounted on a winding facility, and the electrode is formed by attaching copper foil electrodes to both ends of the conductive carbon paper while rewinding the conductive carbon paper. . At this time, a conductive adhesive is coated on the surface of the copper foil electrode adhered to the conductive carbon paper. As a component of the conductive adhesive, polythiophene, a conductive polymer, is about 10 to 15%, and nano-sized silver powder is about 5 to 10%. About 80-85% of thermosetting acrylic resin of thermosetting system is mix | blended with binder resin, and a copper foil electrode is coat | covered in paste state. After coating the conductive adhesive, the curing is performed. The curing conditions are suitably about 2 to 3 days at about 40 ° C.
ⅴ) 동박전극이 형성된 도전성 카본지 위에 폴리프로필렌 접착수지를 이용하여 폴리에스테르 부직포를 합지하는 단계;Iii) laminating a polyester nonwoven fabric using a polypropylene adhesive resin on the conductive carbon paper on which the copper foil electrode is formed;
다른 일면이 절연기재와 합지되어 와인더에서 동박전극이 부착된 도전성 카본지를 도 2의 1급지에 장착하고, 2급지에는 폴리에스테르 부직포를 장착한다. 준비된 폴리프로필렌 접착수지를 250∼350℃ 정도로 충분히 가열된 용융압출기로 투입하면서 녹여서 1급지의 동박전극이 부착된 도전성 카본지의 동박전극이 부착된 면과 2급지의 폴리에스테르 부직포 사이로 용융된 폴리프로필렌 접착수지를 티다이를 통해 압출하면서 기계속도와 압출량를 조절하여 폴리프로필렌 접착수지층의 목표두께를 맞추는데, 두께는 공정성과 전기절연성을 감안하여 약 150∼200㎛ 정도가 바람직하다.The other side is laminated with an insulating substrate, and the conductive carbon paper with the copper foil electrode attached to the winder is attached to the first paper of FIG. 2, and the non-woven polyester is attached to the second paper. Melting the prepared polypropylene adhesive resin into a melt extruder heated sufficiently at about 250 to 350 ° C., and melting the polypropylene adhesive between the copper foil electrode of the conductive carbon paper with the copper foil electrode of the primary paper attached and the polyester nonwoven fabric of the secondary paper. While the resin is extruded through the T-die, the machine speed and the amount of extrusion are adjusted to meet the target thickness of the polypropylene adhesive resin layer. The thickness is preferably about 150 to 200 µm in consideration of processability and electrical insulation.
이하 실시예를 통하여 본 발명을 좀 더 구체적으로 설명하지만, 하기의 실시에에 본 발명의 범주가 한정되는 것은 아니다. Hereinafter, the present invention will be described in more detail with reference to Examples, but the scope of the present invention is not limited to the following Examples.
실시예 1Example 1
먼저 다음과 같이 도전성 카본지를 준비하였다.First, conductive carbon paper was prepared as follows.
평량: 55g/㎡Basis weight: 55g / ㎡
카본사 함량: 25%Carbon yarn content: 25%
제품 폭: 550㎜Product Width: 550mm
제품 길이: 1,000mProduct length: 1,000m
저항: 107ΩResistance: 107Ω
먼저 위의 도전성 카본지에 앵카코팅을 하기 위하여 이액형 앵카코팅제를 준비하였다. 이액형 앵카코팅제는 주제로 폴리에스테르계 접착수지를 사용하며 용제로 사용되는 초산에틸(Ethyl Acetate)과 1:1로 배합된 용액이며, 경화제로는 우레탄 프리폴리머를 사용하며 용제로 사용되는 초산에틸에 43%가 배합된 용액이다. 앵카코팅 시에는 주제와 경화제를 용제인 초산에틸에 희석하여 사용하는데 주제와 경화제, 용제의 배합비는 1:1:8로 사용하였다. 도전성 카본지를 도 2의 1급지에 장착하고 앵카코팅제를 액받이에 붓고 도전성 카본지에 앵카코팅을 하면서 건조로를 통과하였다. 건조로의 길이는 6m이고 건조온도는 150℃이며 코팅속도는 20m/min으로 건조한 결과 도전성 카본지의 수분이 충분히 건조되었다.First, a two-component anca coating agent was prepared in order to perform anca coating on the conductive carbon paper. The two-component anca coating agent is a solution composed of polyester-based adhesive resin and 1: 1 mixed with ethyl acetate, which is used as a solvent, and a urethane prepolymer as a curing agent, to ethyl acetate, which is used as a solvent. 43% combined solution. At the time of anchor coating, the main ingredient and the curing agent were diluted in ethyl acetate, which is a solvent, and the mixing ratio of the main ingredient, the curing agent and the solvent was used at 1: 1: 8. The conductive carbon paper was attached to the paper feeder of FIG. 2, the anca coating agent was poured into the drip tray, and the conductive carbon paper was passed through the drying furnace while being anchored on the conductive carbon paper. The drying furnace had a length of 6 m, a drying temperature of 150 ° C. and a coating speed of 20 m / min. As a result, the moisture of the conductive carbon paper was sufficiently dried.
앵카코팅이 된 도전성 카본지를 2급지에 장착하고, 1급지에는 폴리에스테르 부직포를 장착한 뒤에 준비된 폴리프로필렌 접착수지를 250∼350℃ 정도로 충분히 가열된 용융압출기로 투입하면서 녹여서 1급지의 폴리에스테르 부직포와 2급지의 도전성 카본지 사이로 용융된 폴리프로필렌 접착수지를 티다이를 통해 압출하면서 폴리프로필렌 접착수지층의 두께를 150㎛으로 조정하여 폴리에스테르 부직포와 도전성 카본지를 합지하였다. Anchorage-coated conductive carbon paper is attached to paper 2, and polyester 1 is attached to paper 1, and then the prepared polypropylene adhesive resin is melted while being melted in a melt extruder heated to about 250 to 350 ° C. The polyester nonwoven fabric and the conductive carbon paper were laminated by adjusting the thickness of the polypropylene adhesive resin layer to 150 µm while extruding the molten polypropylene adhesive resin between the secondary conductive carbon papers through a T-die.
폴리에스테르 부직포와 도전성 카본지가 합지된 롤을 와인더에 장착하고 도전성 접착제가 코팅된 압연동박전극을 도전성 카본지 양 끝부분에 부착하여 전극을 형성하였다. 이때 동박전극에 코팅된 도전성 접착제의 성분으로는 전도성 폴리머인 폴리티오펜(Polythiophene)과 나노 크기의 은가루를 배합한 조성물을 17%, 바인더 수지로 열경화방식의 내열성 아크릴계 수지를 83% 배합하여 페이스트 상태로 동박전극에 코팅을 한 뒤 40℃에서 약 2일간 경화를 한 것이다.A roll of a polyester nonwoven fabric and a conductive carbon paper laminated was mounted on a winder, and a rolled copper foil electrode coated with a conductive adhesive was attached to both ends of the conductive carbon paper to form an electrode. At this time, the conductive adhesive coated on the copper foil electrode is composed of 17% of a composition containing polythiophene, a conductive polymer, and nano silver powder, and 83% of a thermosetting heat-resistant acrylic resin with a binder resin. After coating the copper foil electrode in the state it was cured for about two days at 40 ℃.
한쪽 면은 동박전극이 부착되고 반대면은 폴리에스테르 부직포가 합지된 도전성 카본지를 1급지에 장착하고 2급지에는 폴리에스테르 부직포를 장착한 뒤에 준비된 폴리프로필렌 접착수지를 250∼350℃ 정도로 충분히 가열된 용융압출기로 투입하면서 녹여서 1급지의 도전성 카본지의 동박전극 부착면과 2급지의 폴리에스테르 부직포 사이로 용융된 폴리프로필렌 접착수지를 티다이를 통해 압출하면서 폴리프로필렌 접착수지층의 두께를 150㎛으로 조정하여 폴리에스테르 부직포와 도전성 카본지를 합지하였다.One side is attached with copper foil electrode and the other side is attached with conductive carbon paper laminated with polyester non-woven fabric on paper 1 and polyester non-woven fabric on paper 2, then melted with sufficient heating of polypropylene adhesive resin prepared at 250 ~ 350 ℃ The polypropylene adhesive resin layer was melted while being injected into an extruder, and the polypropylene adhesive resin melted between the copper foil electrode attachment surface of the first-grade conductive carbon paper and the polyester nonwoven fabric of the second paper was passed through a T-die, and the thickness of the polypropylene adhesive resin layer was adjusted to 150 μm. The nonwoven fabric and the conductive carbon paper were laminated.
위와 같은 방법으로 만든 면상발열체에 220볼트의 전압으로 통전을 한 뒤에 면상발열체의 내열성을 파악하기 위하여 면상발열체 위에 보온단열재를 약 30㎝ 정도 올려서 집열 테스트를 한 결과, 하기 표 1과 같이 고온에 대한 우수한 내열특성을 나타내었다.After conducting electricity at a voltage of 220 volts to the planar heating element made by the above method, the heat insulating material was placed on the planar heating element by about 30 cm in order to determine the heat resistance of the planar heating element. Excellent heat resistance.
*주) 접착제 파괴 온도 : 접착제란 도전성 카본지와 표면절연기재를 접착시켜주는 역할을 하는데 이 접착제가 열에 의해서 녹거나, 도전성 카본지에서 떨어질 경우 카본층이 산화되어 화재의 위험이 있는 온도로서 단기 가혹테스트 시 측정하는 기준이며, 장기 내열온도와는 다르다.* Note: Adhesive breakdown temperature: Adhesives are used to bond conductive carbon paper and surface insulating materials. If the adhesive melts by heat or falls from conductive carbon paper, the carbon layer is oxidized and it may cause a fire. It is a measure of time measurement and is different from long-term heat resistance temperature.
전술한 바와 같이, 본 발명에 따른 고온 면상발열체는 내열성이 낮은 접착제를 사용하거나, 오프라인에서 핫멜트 접착제로 도전성 카본지와 절연기재를 접착시킬 때, 집열에 의하여 접착제가 녹거나 접착력이 부족하여 집열로 인하여 온도가 올라가면 도전성 카본지에서 접착제가 떨어지기 때문에 50℃ 이상의 고온이 요구되는 응용분야에는 적용하지 못했던 분야에 안심하고 사용할 수 있는 고성능의 제품이다. 원가 측면에서도 오프라인에서 도전성 카본지와 절연기재를 에틸렌비닐아세테이트 핫멜트 폴리에스테르 필름으로 접착시킨 기존의 일반 면상발열체에 비하여 크게 차이가 나지 않는다. 또한 본 발명에 따른 고온 면상발열체는 기존에 에폭시 프리프레크 판을 절연기재로 사용하여 도전성 카본지를 프레스로 합지하여 70∼100℃의 발열특성을 갖는 고가의 고온용 면상발열체의 일부 용도를 대체할 수 있을 것으로 기대된다.As described above, the high temperature planar heating element according to the present invention uses an adhesive having low heat resistance, or when the conductive carbon paper and the insulating substrate are bonded with a hot melt adhesive off-line, the adhesive is melted due to the heat collection or the adhesive force is insufficient due to heat collection. It is a high-performance product that can be used safely in areas that could not be applied to applications requiring high temperature of 50 ℃ or more because the adhesive falls from the conductive carbon paper when the temperature rises. In terms of cost, there is no significant difference compared to the conventional planar heating element in which the conductive carbon paper and the insulating material are bonded with ethylene vinyl acetate hot melt polyester film offline. In addition, the high temperature planar heating element according to the present invention can replace some uses of the expensive high temperature planar heating element having an exothermic property of 70 to 100 ° C. by using a conductive carbon paper as a press using an epoxy prepreg plate as an insulating material. It is expected to be.
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| KR100488479B1 (en) * | 2003-05-20 | 2005-05-11 | 주식회사 진흥공업 | Method for coating insulating film on plane heater |
| KR100518929B1 (en) * | 2003-07-04 | 2005-10-04 | 성광소재 주식회사 | A face-type heating complex unit used in car seat |
| KR20070000529U (en) * | 2007-03-12 | 2007-05-08 | 이장훈 | sheet type heating element |
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|---|---|---|---|---|
| KR100488479B1 (en) * | 2003-05-20 | 2005-05-11 | 주식회사 진흥공업 | Method for coating insulating film on plane heater |
| KR100518929B1 (en) * | 2003-07-04 | 2005-10-04 | 성광소재 주식회사 | A face-type heating complex unit used in car seat |
| KR20070000529U (en) * | 2007-03-12 | 2007-05-08 | 이장훈 | sheet type heating element |
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