JP2018184676A - Apparatus for cooling web - Google Patents

Apparatus for cooling web Download PDF

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JP2018184676A
JP2018184676A JP2017086631A JP2017086631A JP2018184676A JP 2018184676 A JP2018184676 A JP 2018184676A JP 2017086631 A JP2017086631 A JP 2017086631A JP 2017086631 A JP2017086631 A JP 2017086631A JP 2018184676 A JP2018184676 A JP 2018184676A
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web
cooling
roll
cooling roll
coating
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JP6904770B2 (en
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延和 新子
Nobukazu Shinko
延和 新子
宣亨 松田
Nobuyuki Matsuda
宣亨 松田
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Hirano Tecseed Co Ltd
Hirano Steel Recycle Co
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Hirano Tecseed Co Ltd
Hirano Steel Recycle Co
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Abstract

PROBLEM TO BE SOLVED: To provide an apparatus for cooling a web which does not wrinkle a web when drying and cooling after stripe-coating an only one side of the web composed of a metal foil with a coating liquid, relating to the apparatus for cooling the web.SOLUTION: A coated surface composed of a coated layer 2 and a non-coated layer 3 is formed of stripe-like on only one side of a long-formed web 1 composed of a metal foil. The apparatus for cooling a web cools the web by contacting a cooling roll to the coated surface having the coated layers of the web 1 running from an upstream to a downstream along a conveying way, the cooling roll disposed on a downstream of a heat treatment device for drying the coated layer 2 coated on the web.SELECTED DRAWING: Figure 2

Description

本発明は、ウエブの冷却装置に関するものである。   The present invention relates to a web cooling apparatus.

従来、充電池の電極に用いられる金属箔のウエブに塗工液をストライプ塗工し、その後に熱処理装置で塗工液を乾燥させている。そして、ウエブを冷却するために、冷却ロールにウエブを走行させている。   Conventionally, a coating solution is applied in a stripe pattern to a metal foil web used for an electrode of a rechargeable battery, and then the coating solution is dried by a heat treatment apparatus. And in order to cool a web, the web is made to drive | work a cooling roll.

特開平４−３４３７５３号公報Japanese Patent Laid-Open No. 4-343653

金属箔であるウエブの両面をストライプ塗工している場合には、従来の冷却ロールで冷却しても、ウエブの表面と裏面とに温度差がないため、皺が発生にくい。   When both sides of the web, which is a metal foil, are stripe-coated, there is no temperature difference between the front surface and the back surface of the web even if it is cooled by a conventional cooling roll, so that wrinkles are unlikely to occur.

しかし、金属箔であるウエブの表面のみにストライプ塗工して従来の冷却ロールで冷却すると、ウエブの裏面は全く塗工されていないため、ウエブの表面における塗工部の比熱量と非塗工部の比熱量に大きな差がでてくる。   However, when stripe coating is applied only to the surface of the web, which is a metal foil, and cooling is performed with a conventional cooling roll, the specific surface of the coating on the surface of the web and the non-coating are not applied because the back of the web is not applied at all. A big difference appears in the specific heat quantity of the part.

そのため、ウエブを冷却ロールで冷却する過程において、比熱量の小さい非塗工部と比熱量の多い塗工部とで冷却時間と冷却温度が大幅に異なり、その結果、ウエブの幅方向での熱収縮差により、ウエブに皺が発生するという問題点があった。   Therefore, in the process of cooling the web with a cooling roll, the cooling time and the cooling temperature differ significantly between the non-coated part with a small specific heat amount and the coated part with a large specific heat amount. There was a problem that wrinkles occurred on the web due to the shrinkage difference.

そこで本発明は上記問題点に鑑み、金属箔よりなるウエブの片面のみに塗工液をストライプ塗工して乾燥させた後に冷却する場合に、ウエブに皺を発生させないウエブの冷却装置を提供することを目的とする。   Therefore, in view of the above problems, the present invention provides a web cooling device that does not generate wrinkles on a web when the coating liquid is applied to only one side of a web made of metal foil and then cooled after drying. For the purpose.

本発明は、金属箔よりなる長尺状のウエブの片面のみにストライプ状に塗工層と非塗工層よりなる塗工面が形成され、搬送路に沿って上流から下流に走行する前記ウエブの前記塗工層を有する前記塗工面に冷却ロールを接触させて、前記ウエブを冷却する、ウエブの冷却装置である。   In the present invention, a coated surface composed of a coating layer and a non-coating layer is formed in a stripe shape only on one side of a long web made of metal foil, and the web traveling from upstream to downstream along the transport path A web cooling device that cools the web by bringing a cooling roll into contact with the coated surface having the coated layer.

本発明によれば、冷却ロールをウエブの塗工面に直接接触させ、比熱量の大きい塗工部のみを冷却することで非塗工部との冷却時間と冷却温度の差を緩和させ熱収縮差を小さくし、ウエブに皺を発生させない。   According to the present invention, the cooling roll is brought into direct contact with the coated surface of the web, and only the coated part having a large specific heat is cooled, so that the difference between the cooling time and the cooling temperature with the non-coated part is alleviated and the heat shrinkage difference is reduced. To reduce wrinkles on the web.

また、冷却ロールの表面には、塗工部との厚み差から非塗工部は接触しないため、冷却ロールの接触によるウエブの拘束が発生せず、熱収縮差での皺の発生をより抑制できる。   In addition, the surface of the cooling roll does not come into contact with the non-coated part due to the difference in thickness from the coated part, so the web is not restrained by the contact with the cooling roll and the generation of wrinkles due to the difference in thermal shrinkage is further suppressed. it can.

本発明の一実施形態を示す冷却装置を含む製造装置の全体図である。1 is an overall view of a manufacturing apparatus including a cooling device according to an embodiment of the present invention. ウエブの塗工面の平面図である。It is a top view of the coating surface of a web. 第１冷却ロールの縦断面図である。It is a longitudinal cross-sectional view of a 1st cooling roll.

以下、本発明の一実施形態のウエブ１の冷却装置１０を用いた製造装置５について図１〜図３を参照して説明する。本実施形態における長尺状のウエブ１は、充電池の電極に用いられる金属箔であって、この金属箔には塗工液がストライプ塗工されている。「ストライプ塗工」とは、図２に示すようにウエブ１の幅方向において塗工部２と非塗工部３とが交互に形成されたものを意味する。   Hereinafter, the manufacturing apparatus 5 using the cooling apparatus 10 of the web 1 of one Embodiment of this invention is demonstrated with reference to FIGS. 1-3. The elongate web 1 in this embodiment is a metal foil used for the electrode of a rechargeable battery, and the coating liquid is stripe-coated on this metal foil. “Stripe coating” means that the coated portions 2 and the non-coated portions 3 are alternately formed in the width direction of the web 1 as shown in FIG.

（１）ウエブ１の製造装置５の全体的構成
ウエブ１を製造する製造装置５の全体的構成について図１を参照して説明する。製造装置５は、塗工装置６、熱処理装置７、冷却装置１０より構成されている。ウエブ１は、上流から下流に一定の走行速度Ｖで走行する。 (1) Overall Configuration of Manufacturing Apparatus 5 for Web 1 The overall configuration of the manufacturing apparatus 5 for manufacturing the web 1 will be described with reference to FIG. The manufacturing apparatus 5 includes a coating apparatus 6, a heat treatment apparatus 7, and a cooling apparatus 10. The web 1 travels at a constant traveling speed V from upstream to downstream.

塗工装置６は、バックアップロール８、ダイ９、ガイドロール１１とよりなる。バックアップロール８は、ウエブ１を走行速度Ｖで走行させる。ダイ９は、バックアップロール８の側方に設けられ、バックアップロール８によって走行するウエブ１の片面（塗工面）にのみストライプ状に塗工液を塗工して塗工部２と非塗工部３を形成する。ガイドロール１１は、ウエブ１をバックアップロール８から熱処理装置７に案内する。   The coating device 6 includes a backup roll 8, a die 9, and a guide roll 11. The backup roll 8 causes the web 1 to travel at the traveling speed V. The die 9 is provided on the side of the backup roll 8, and the coating liquid is applied in a stripe shape only on one side (coating surface) of the web 1 that is run by the backup roll 8 to apply the coating part 2 and the non-coating part. 3 is formed. The guide roll 11 guides the web 1 from the backup roll 8 to the heat treatment apparatus 7.

熱処理装置７は、塗工装置６の下流に設けられ、断熱性を有する熱処理室１２の内部にウエブ１の搬送路が水平に設けられている。搬送路の上方には、複数の上ノズル１４が所定間隔毎に設けられ、搬送路の下方には、複数の下ノズル１６が所定間隔毎に設けられている。熱処理室１２の搬入口１８から搬入されたウエブ１は、上ノズル１４と下ノズル１６からそれぞれ熱風が吹き付けられ、塗工部２の乾燥処理が行われ、搬出口２０から搬出され、熱処理装置７の下流にある冷却装置１０に案内される。   The heat treatment apparatus 7 is provided downstream of the coating apparatus 6, and the conveyance path of the web 1 is horizontally provided in the heat treatment chamber 12 having heat insulation properties. A plurality of upper nozzles 14 are provided at predetermined intervals above the conveyance path, and a plurality of lower nozzles 16 are provided at predetermined intervals below the conveyance path. The web 1 carried in from the carry-in port 18 of the heat treatment chamber 12 is sprayed with hot air from the upper nozzle 14 and the lower nozzle 16 respectively, the coating part 2 is dried, carried out from the carry-out port 20, and the heat treatment device 7. It is guided to the cooling device 10 downstream.

（２）冷却装置１０
冷却装置１０について図１〜図３を参照して説明する。冷却装置１０は、上流から順番にガイドロール２２、第１冷却ロール２４、第２冷却ロール２６を有する。熱処理室１２の搬出口２０から搬出されたウエブ１は、ガイドロール２２を経て第１冷却ロール２４によって塗工部２が冷却され、第２冷却ロール２６によってさらに塗工部２が冷却される。第１冷却ロール２４と第２冷却ロール２６は、ウエブ１の走行速度Ｖと同じ速度で駆動させてもよく、又は、他動でもよい。 (2) Cooling device 10
The cooling device 10 will be described with reference to FIGS. The cooling device 10 includes a guide roll 22, a first cooling roll 24, and a second cooling roll 26 in order from the upstream. The web 1 unloaded from the carry-out port 20 of the heat treatment chamber 12 is cooled by the first cooling roll 24 through the guide roll 22, and the coating section 2 is further cooled by the second cooling roll 26. The first cooling roll 24 and the second cooling roll 26 may be driven at the same speed as the traveling speed V of the web 1 or may be driven separately.

ガイドロール２２は、図１に示すように、ウエブ１の塗工面側に配置され、ウエブ１の塗工部２と接触してウエブ１が第１冷却ロール２４に搬送されるように調整する。ガイドロール２２は、熱処理室１２から搬出されたウエブ１とほぼ同じ温度であり、ウエブ１の塗工部２と線接触をしている。そのため、ウエブ１の塗工部の温度が下がったり、ウエブ１に皺が発生しない。ガイドロール２２を経たウエブ１は、第１冷却ロール２４に至る。   As shown in FIG. 1, the guide roll 22 is disposed on the coating surface side of the web 1 and is adjusted so as to come into contact with the coating part 2 of the web 1 and to be conveyed to the first cooling roll 24. The guide roll 22 has substantially the same temperature as the web 1 carried out from the heat treatment chamber 12 and is in line contact with the coating part 2 of the web 1. For this reason, the temperature of the coated portion of the web 1 does not drop and wrinkles are not generated on the web 1. The web 1 that has passed through the guide roll 22 reaches the first cooling roll 24.

第１冷却ロール２４は、図３に示すように、筒状の金属製のロール本体２８とロール本体２８から突出した左右一対の筒状の軸３２，３４を有している。ロール本体２８内部には、空間３０が設けられている。不図示のポンプによって温水が、図３における一方の筒状の軸３２から空間３０に流入し、他方の筒状の軸３４から流出する。温水の温度は、ウエブ１の塗工部２の温度よりも若干低く設定され、かつ、ロール本体２８が金属製であるため熱伝導性が高いので、第１冷却ロール２４の表面温度は、ウエブ１の温度と同じか、又は、低くなる。第１冷却ロール２４の表面に、ウエブ１のストライプ塗工された塗工部２が直接接触する。この場合に、塗工部２には厚さがあるため、ウエブ１の非塗工部３、すなわち金属箔自身には第１冷却ロール２４の表面が接触しない。したがって、ストライプ状の塗工部２のみが冷却される。なお、第１冷却ロール２４がウエブ１を抱く角度である抱き角は、１０°以上が好ましい。これは、ウエブ１の冷却を確実に行うためである。さらに、冷却ロール２４の表面温度は、ウエブ１の温度以下であればよく、同じ温度でも冷却効果はある。第１冷却ロール２４を経たウエブ１は、第２冷却ロール２６に至る。   As shown in FIG. 3, the first cooling roll 24 includes a cylindrical metal roll main body 28 and a pair of left and right cylindrical shafts 32 and 34 protruding from the roll main body 28. A space 30 is provided inside the roll body 28. Hot water flows into the space 30 from one cylindrical shaft 32 in FIG. 3 and flows out from the other cylindrical shaft 34 by a pump (not shown). The temperature of the hot water is set slightly lower than the temperature of the coating part 2 of the web 1 and the roll body 28 is made of metal, so that the thermal conductivity is high. It is the same as or lower than the temperature of 1. The coating part 2 on which the stripe coating of the web 1 is in direct contact with the surface of the first cooling roll 24. In this case, since the coated part 2 has a thickness, the surface of the first cooling roll 24 does not contact the non-coated part 3 of the web 1, that is, the metal foil itself. Therefore, only the stripe-shaped coating part 2 is cooled. The holding angle, which is the angle at which the first cooling roll 24 holds the web 1, is preferably 10 ° or more. This is for reliably cooling the web 1. Furthermore, the surface temperature of the cooling roll 24 should just be below the temperature of the web 1, and there exists a cooling effect even if it is the same temperature. The web 1 that has passed through the first cooling roll 24 reaches the second cooling roll 26.

第２冷却ロール２６の構造は、第１冷却ロール２４と同じ構造であるが、流れ込む温水の温度は、第１冷却ロール２４よりも低い温度に設定され、ウエブ１をさらに冷却できる。そして、この第２冷却ロール２６においては、ウエブ１の塗工面ではなく、非塗工面が接触するように配置されている。   Although the structure of the 2nd cooling roll 26 is the same structure as the 1st cooling roll 24, the temperature of the warm water which flows in is set to the temperature lower than the 1st cooling roll 24, and can cool the web 1 further. And in this 2nd cooling roll 26, it arrange | positions so that not a coating surface of the web 1 but a non-coating surface may contact.

なお、ガイドロール２２でウエブ１に皺が発生する場合には、このガイドロール２２を設けず、ウエブ１が第１冷却ロール２４に直接搬送されるようにしてもよい。   When wrinkles occur on the web 1 with the guide roll 22, the web 1 may be directly conveyed to the first cooling roll 24 without providing the guide roll 22.

また、第２冷却ロール２６を通過してもウエブ１の温度が、周囲環境温度＋２５℃以下にならない場合には、さらに一乃至複数の冷却ロールを追加してウエブ１を冷却させてもよい。   Further, when the temperature of the web 1 does not become the ambient environment temperature + 25 ° C. or lower even after passing through the second cooling roll 26, one or more cooling rolls may be added to cool the web 1.

（３）効果
本実施形態によれば、熱伝導性の高い第１冷却ロール２４をウエブ１の塗工部２に直接接触させ、比熱量の大きい塗工部２のみを積極的に冷却することで冷却時間、冷却温度の差を緩和でき、また、非塗工部との熱収縮差を緩和できる。このため、ウエブ１に皺が発生し難い。 (3) Effect According to the present embodiment, the first cooling roll 24 with high thermal conductivity is brought into direct contact with the coating part 2 of the web 1 to actively cool only the coating part 2 having a large specific heat. Thus, the difference in cooling time and cooling temperature can be alleviated, and the difference in heat shrinkage from the non-coated part can be alleviated. For this reason, wrinkles hardly occur on the web 1.

また、ウエブ１の塗工部２には厚みがあるため、非塗工部３、すなわち金属箔自身には、第１冷却ロール２４の表面が接触せず、ロール接触によるウエブ１の拘束が発生せず、熱収縮差で皺の発生もより抑制できる。   Further, since the coated portion 2 of the web 1 has a thickness, the surface of the first cooling roll 24 does not contact the non-coated portion 3, that is, the metal foil itself, and the web 1 is restrained by the roll contact. In addition, the generation of wrinkles can be further suppressed by the heat shrinkage difference.

また、第２冷却ロール２６は、第１冷却ロール２４よりもさらに低い温度に設定されているため、ウエブ１は順番に冷却される。そのため、第２冷却ロール２６の表面にウエブ１を直接接触させても、熱履歴によってウエブ１の材料（金属箔）へのストレスを低減でき、皺が発生し難い。   Moreover, since the 2nd cooling roll 26 is set to the temperature lower than the 1st cooling roll 24, the web 1 is cooled in order. Therefore, even if the web 1 is brought into direct contact with the surface of the second cooling roll 26, the stress on the material (metal foil) of the web 1 can be reduced due to the thermal history, and wrinkles are hardly generated.

（４）変更例
上記実施形態では、第２冷却ロール２６は、ウエブ１の非塗工側を接触させたが、これに代えて第１冷却ロール２４と同様にウエブ１の塗工面側、すなわち塗工部２に接触させてもよい。 (4) Modified Example In the above embodiment, the second cooling roll 26 is brought into contact with the non-coating side of the web 1, but instead of this, the coating surface side of the web 1, similarly to the first cooling roll 24, that is, You may make it contact the coating part 2. FIG.

上記実施形態における塗工装置６と熱処理装置７は一例であり、他の構造であってもよい。   The coating device 6 and the heat treatment device 7 in the above embodiment are merely examples, and may have other structures.

上記では本発明の一実施形態を説明したが、この実施形態は、例として提示したものであり、発明の範囲を限定することは意図していない。これら新規な実施形態は、その他の様々な形態で実施されることが可能であり、発明の主旨を逸脱しない範囲で、種々の省略、置き換え、変更を行うことができる。これら実施形態やその変形は、発明の範囲や要旨に含まれると共に、特許請求の範囲に記載された発明とその均等の範囲に含まれる。   Although one embodiment of the present invention has been described above, this embodiment is presented as an example and is not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

１・・・ウエブ１、２・・・塗工部、３・・・非塗工部、７・・・熱処理装置、１０・・・冷却装置、２４・・・第１冷却ロール、２８・・・ロール本体 DESCRIPTION OF SYMBOLS 1 ... Web 1, 2 ... Coating part, 3 ... Non-coating part, 7 ... Heat processing apparatus, 10 ... Cooling device, 24 ... 1st cooling roll, 28 ...・ Roll body

Claims (7)

金属箔よりなる長尺状のウエブの片面のみにストライプ状に塗工層と非塗工層よりなる塗工面が形成され、
搬送路に沿って上流から下流に走行する前記ウエブの前記塗工層を有する前記塗工面に冷却ロールを接触させて、前記ウエブを冷却する、
ウエブの冷却装置。 A coating surface consisting of a coating layer and a non-coating layer is formed in a stripe shape only on one side of a long web made of metal foil,
Cooling the web by bringing a cooling roll into contact with the coating surface having the coating layer of the web traveling from upstream to downstream along the conveyance path;
Web cooling device. 前記冷却ロールは、前記ウエブに塗工された前記塗工層を乾燥させる熱処理装置の下流に設けられている、
請求項１に記載のウエブの冷却装置。 The cooling roll is provided downstream of a heat treatment device that dries the coating layer coated on the web.
The web cooling apparatus according to claim 1. 前記冷却ロールは、駆動式で回転するか、又は、他動式で回転するかである、
請求項１に記載のウエブの冷却装置。 The cooling roll is driven or rotated in a driven manner.
The web cooling apparatus according to claim 1. 前記冷却ロールの表面温度は、前記ウエブの温度以下である、
請求項１に記載のウエブの冷却装置。 The surface temperature of the cooling roll is equal to or lower than the temperature of the web.
The web cooling apparatus according to claim 1. 前記冷却ロールは、筒状の金属製のロール本体と、前記ロール本体の両端から突出した左右一対の筒状の軸と、前記ロール本体内部の空間からなり、前記空間に一方の前記軸から温水を流入させ、前記空間の前記温水を他方の前記軸から流出させる、
請求項１に記載のウエブの冷却装置。 The cooling roll includes a cylindrical metal roll main body, a pair of left and right cylindrical shafts protruding from both ends of the roll main body, and a space inside the roll main body. And let the warm water in the space flow out from the other shaft.
The web cooling apparatus according to claim 1. 前記冷却ロールと前記ウエブが接触する抱き角は、１０°以上である、
請求項１に記載のウエブの冷却装置。 The holding angle at which the cooling roll and the web are in contact is 10 ° or more.
The web cooling apparatus according to claim 1. 前記冷却ロールの下流に第２の冷却ロールが設けられ、
前記第２の冷却ロールの表面温度は、前記冷却ロールの表面温度より低い、
請求項１に記載のウエブの冷却装置。 A second cooling roll is provided downstream of the cooling roll;
The surface temperature of the second cooling roll is lower than the surface temperature of the cooling roll,
The web cooling apparatus according to claim 1.
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JPH10309876A (en) * 1997-05-12 1998-11-24 Ricoh Co Ltd Resin layer forming unit and image forming system provided with the unit
JP2003245585A (en) * 2002-02-27 2003-09-02 Fuji Photo Film Co Ltd Web cooling device
JP2003260391A (en) * 2002-03-07 2003-09-16 Hirano Tecseed Co Ltd Apparatus and method for intermittently coating
JP2004358296A (en) * 2003-06-02 2004-12-24 Fuji Photo Film Co Ltd Coating method
JP2010534132A (en) * 2007-07-25 2010-11-04 スリーエム イノベイティブ プロパティズ カンパニー System and method for forming a film having a matte finish
JP2014184364A (en) * 2013-03-22 2014-10-02 Dainippon Screen Mfg Co Ltd Drying unit, drying device, and film forming system

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* Cited by examiner, † Cited by third party
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JPH06134379A (en) * 1992-10-28 1994-05-17 Mitsubishi Materials Corp Applicator
US5639305A (en) * 1994-04-29 1997-06-17 Minnesota Mining And Manufacturing Company Die coating method and apparatus
JPH09511682A (en) * 1994-04-29 1997-11-25 ミネソタ・マイニング・アンド・マニュファクチュアリング・カンパニー Roll and die coating method and apparatus
JPH10309876A (en) * 1997-05-12 1998-11-24 Ricoh Co Ltd Resin layer forming unit and image forming system provided with the unit
JP2003245585A (en) * 2002-02-27 2003-09-02 Fuji Photo Film Co Ltd Web cooling device
JP2003260391A (en) * 2002-03-07 2003-09-16 Hirano Tecseed Co Ltd Apparatus and method for intermittently coating
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