JP2012013383A - Drying device in thin film coating device - Google Patents

Drying device in thin film coating device Download PDF

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JP2012013383A
JP2012013383A JP2010152704A JP2010152704A JP2012013383A JP 2012013383 A JP2012013383 A JP 2012013383A JP 2010152704 A JP2010152704 A JP 2010152704A JP 2010152704 A JP2010152704 A JP 2010152704A JP 2012013383 A JP2012013383 A JP 2012013383A
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drying
hot air
coated
heater
film
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Takayuki Ito
高之 伊藤
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Clean Technology Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

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Abstract

PROBLEM TO BE SOLVED: To provide a drying device in a breakthrough thin film coating device capable of heat-drying a coating film from the surface and from the inside speedily with a combined use of surface drying by hot air and radiation heat drying by an infrared heater, preventing vaporized gas from reaching a dangerous concentration even if it is generated from the coating film while sufficiently maintaining a drying effect of hot air drying, even if the infrared heater is brought close to enhance the radiation heat drying efficiency, and increasing mass productivity of film coating by the improvement of drying capacity.SOLUTION: In the drying device in the thin film coating device provided with a hot air directing part 12 at a heater rod-like part 11, which directs hot air toward the coating film 6 below this, a drying heater part 9 for drying the coating film 6 by radiation heat is disposed in a drying chamber 5 where a film-like material 4 to be coated that has been coated is conveyed and passes for hot-air drying, the drying heater part 9 being configured in such a manner that a multiplicity of the heater rod-like parts 11 are disposed in parallel through ventilation gaps 10.

Description

本発明は、例えばスリット状の先端吐出孔から塗工液を吐出するノズル部に対して、フィルム状の被塗工体を搬送して表面に薄膜を塗工形成するように構成した薄膜塗工装置に設ける乾燥装置であって、塗工を終えたフィルム状の被塗工体を、熱風が送り込まれる乾燥室を搬送通過させて塗工膜を乾燥する乾燥装置に関するものである。   The present invention, for example, a thin film coating configured to convey a film-like object to be coated and to form a thin film on the surface thereof with respect to a nozzle portion that discharges a coating liquid from a slit-like tip discharge hole The present invention relates to a drying apparatus provided in an apparatus, which relates to a drying apparatus that dries a coating film by transporting and passing a film-like object to be coated through a drying chamber into which hot air is sent.

液供給部から供給された塗工液をスリット状の先端吐出孔から吐出するノズル部を有し、このノズル部の先端吐出孔から塗工液を吐出しながら、このノズル部と対向するフィルム状の被塗工体をこのノズル部に対して搬送させることで、このフィルム状の被塗工体に塗工液を薄膜状に塗工するように構成した薄膜塗工装置においては、その搬送下流側に乾燥装置を設けて塗工を終えたフィルム状の被塗工体の塗工膜を乾燥する。   It has a nozzle part that discharges the coating liquid supplied from the liquid supply part from the slit-like tip discharge hole, and discharges the coating liquid from the tip discharge hole of this nozzle part while facing this nozzle part In the thin film coating apparatus configured to apply the coating liquid to the film-shaped coated body in a thin film shape by transporting the coated body to the nozzle portion, the transport downstream A drying apparatus is provided on the side to dry the coating film of the film-like object to be coated.

このフィルム塗工の量産性を向上するには、この乾燥装置での乾燥能力を高めて搬送スピードを高める必要がある。   In order to improve the mass productivity of the film coating, it is necessary to increase the drying capability in the drying apparatus and increase the conveyance speed.

特に、フィルム状の被塗工体の両面に塗工する場合、一旦被塗工体の片面に塗工後この塗工膜を乾燥し、更に反対面にも塗工した後この反対面の塗工膜も乾燥するため、各乾燥装置の乾燥能力が量産性に大きな影響を与える。   In particular, when coating on both sides of a film-like substrate, the coating film is dried once after coating on one side of the substrate, and then coated on the opposite side after coating on the other side. Since the film is also dried, the drying capacity of each drying device has a large effect on mass productivity.

例えば、アルミ製又は銅製などの金属製フィルムを被塗工体とし、この表面にコバルト酸リチウムなどの正極活性物質又はグラファイトなどの負極活性物質にバインダー（ＮＮＰなどの溶媒）などを混合しこれを塗工液として、１００μｍオーダーの薄膜を両面に塗工形成するリチウムイオン電池形成材を作製する場合、塗工はスピーディーに均一に行えても、この塗工後の乾燥をスピーディーに行えず、まだまだ量産性に劣っている。   For example, a metal film such as aluminum or copper is used as an object to be coated, and a positive electrode active material such as lithium cobaltate or a negative electrode active material such as graphite is mixed on this surface with a binder (solvent such as NNP). As a coating solution, when producing a lithium ion battery forming material that coats and forms a thin film of the order of 100 μm on both sides, even if coating can be performed quickly and uniformly, drying after this coating cannot be performed quickly, and still It is inferior in mass productivity.

また、乾燥能力に劣るものの搬送スピードを上げようとすればそれだけ乾燥装置は長く大型となり、更に両面塗工にあってはこの大型な乾燥室を横に連ねるスペースがない場合には二階建て構成とし折り返し乾燥させる構成となり、いずれも一層大型化しコスト高にもなる。   In addition, although the drying capacity is inferior, if the conveying speed is increased, the drying apparatus becomes longer and larger, and in the case of double-sided coating, if there is no space to connect this large drying room to the side, a two-story structure is adopted. It becomes the structure which folds and dries, and all become larger and cost also increases.

本発明は、このような問題を解決すべく乾燥装置の乾燥能力を高めて搬送スピードを高め、フィルム塗工の量産性を向上させたり、小型化が図れるなど画期的な薄膜塗工装置に設ける乾燥装置を提供することを目的としている。   The present invention is an epoch-making thin film coating apparatus that can improve the drying speed of the drying apparatus to improve such a problem, increase the conveyance speed, improve the mass productivity of film coating, and reduce the size. It aims at providing the drying apparatus to provide.

特に本発明においては、単に熱風を送り込む熱風乾燥だけでは、塗工膜の表面はスピーディーに乾燥されるが、内部までスピーディーに加熱乾燥されないことから、乾燥能力を高めるためこの熱風乾燥と併用させて赤外線ヒータ（ＩＲヒータ）を用いることに着眼したものであるが、単にプレート状のＩＲヒータをフィルム状の被塗工体上に近接配設したのではＩＲヒータの輻射熱によって内部までスピーディーに加熱乾燥できることになるが、塗工膜からの気化ガス（例えばＮＮＰの気化ガス）に暴爆性を有する場合、この気化ガスが塗工膜上に留まり危険濃度以上になると暴爆の危険が生じるため、十分に近接できない。   In particular, in the present invention, the surface of the coating film is dried quickly only by hot air drying by sending hot air, but since it is not heated and dried to the inside, it is used in combination with this hot air drying in order to increase the drying capacity. The focus is on the use of infrared heaters (IR heaters). However, simply placing a plate-like IR heater close to the film-like object to be heated and dried quickly by the radiant heat of the IR heater. However, if the vaporized gas from the coating film (for example, NNP vaporized gas) has explosive properties, if the vaporized gas stays on the coating film and exceeds the dangerous concentration, there is a danger of explosion. Insufficient proximity.

熱風乾燥を併用することでこの塗工膜から気化ガスが生じても暴爆危険濃度にはならないと考えられるが、このＩＲヒータの効率を上げるために大面積のＩＲヒータを前述のようにフィルム状の被塗工体の塗工膜に近づけすぎると熱風が行き届かなく、この暴爆危険濃度になるおそれも生じ、また熱風による表面乾燥も効率良く行えなくなることにもなり、結果十分に近づけられないためにＩＲヒータを併用しても十分に乾燥能力が向上し得なかった。   It is thought that even if vaporized gas is generated from this coating film by using hot air drying together, it will not become a dangerous explosion concentration, but in order to increase the efficiency of this IR heater, a large area IR heater is used as described above. If it is too close to the coating film of the object to be coated, the hot air will not reach, there is a risk that this explosion explosion concentration may occur, and the surface drying with hot air may not be performed efficiently, and the result will be sufficiently close Therefore, even if an IR heater was used in combination, the drying ability could not be sufficiently improved.

本発明は、特にこのような問題をも解決し、乾燥室内での熱風による表面乾燥を行う熱風乾燥と、乾燥用ヒータ部（例えば赤外線ヒータ）による輻射熱乾燥との併用により、スピーディーに表面及び内部から塗工膜を加熱乾燥でき、しかもこの乾燥用ヒータ部の輻射熱による内部加熱乾燥の効率を高めるべく塗工膜に近づけても、熱風乾燥効果を十分に維持しつつたとえ塗工膜から暴爆性の気化ガスが生じても危険濃度になるおそれも解消でき、乾燥能力の向上によるフィルム塗工の量産性を高めることができ、また小型化を図れると共に、前述のような危険性もなく実用性にも優れた画期的な薄膜塗工装置に設ける乾燥装置を提供することを目的としている。   In particular, the present invention solves such a problem, and by combining hot air drying for performing surface drying with hot air in a drying chamber and radiant heat drying with a heater for drying (for example, an infrared heater), the surface and the interior can be speedily used. The coating film can be dried by heating, and even if it is close to the coating film in order to increase the efficiency of internal heating drying by the radiant heat of the drying heater section, even if the coating film is explode while maintaining the hot air drying effect sufficiently The possibility of dangerous concentrations can be eliminated even if a natural vaporized gas is generated, the mass productivity of film coating can be improved by improving the drying capacity, and the size can be reduced, and there is no danger as described above. It aims at providing the drying apparatus provided in the epoch-making thin film coating apparatus excellent also in the property.

添付図面を参照して本発明の要旨を説明する。   The gist of the present invention will be described with reference to the accompanying drawings.

ノズル部１の先端吐出孔２から塗工液３を吐出しながら、このノズル部１と対向するフィルム状の被塗工体４をこのノズル部１に対して搬送させることで前記フィルム状の被塗工体４に塗工液３を薄膜状に塗工するように構成した薄膜塗工装置に設ける乾燥装置であって、前記塗工を終えたフィルム状の被塗工体４を搬送通過させる乾燥室５に、前記被塗工体４の塗工膜６を熱風乾燥させる熱風を送出する熱風送風部７とこの熱風を排出する熱風排出部８とを設けて、前記熱風送風部７から送り込まれた熱風で前記被塗工体４の塗工膜６を熱風乾燥しこの熱風をこの塗工膜６から生じる気化ガスと共に前記熱風排出部８から前記乾燥室５外へ排出されるように構成し、前記熱風乾燥に加えて輻射熱で前記塗工膜６を乾燥させる乾燥用ヒータ部９を前記フィルム状の被塗工体４に対向状態に配設し、この乾燥用ヒータ部９は、前記乾燥室５の被塗工体４を覆うプレート体とせずに、前記熱風が通過する通風間隙10を介して多数のヒータ棒状部11が前記被塗工体４の面方向に並設した構成とし、この乾燥用ヒータ部９のヒータ棒状部11間の前記通風間隙10を介して、前記熱風送風部７から送り込まれる熱風を前記被塗工体４の塗工膜６に向けて導風する熱風導風部12を備えたことを特徴とする薄膜塗工装置に設ける乾燥装置に係るものである。   While the coating liquid 3 is being discharged from the tip discharge hole 2 of the nozzle portion 1, the film-like coated body 4 facing the nozzle portion 1 is transported to the nozzle portion 1, so that the film-like coated material is conveyed. A drying device provided in a thin film coating apparatus configured to apply the coating liquid 3 to the coating body 4 in a thin film shape, and transports and passes the film-shaped coated body 4 that has been coated. The drying chamber 5 is provided with a hot air blowing section 7 for sending hot air for drying hot air on the coating film 6 of the coated body 4 and a hot air discharging section 8 for discharging the hot air, and the hot air blowing section 7 is fed into the drying chamber 5. The coating film 6 of the object to be coated 4 is dried with hot air, and the hot air is discharged from the hot air discharge section 8 to the outside of the drying chamber 5 together with the vaporized gas generated from the coating film 6. And a drying heater section for drying the coating film 6 by radiant heat in addition to the hot air drying. The drying heater section 9 is not a plate body that covers the coated body 4 of the drying chamber 5 but is ventilated by the hot air. A large number of heater rod-like portions 11 are arranged in parallel in the surface direction of the object to be coated 4 through gaps 10, and the ventilation gaps 10 between the heater rod-like portions 11 of the drying heater portion 9 According to a drying apparatus provided in a thin film coating apparatus, comprising a hot air blowing section 12 for guiding hot air sent from a hot air blowing section 7 toward the coating film 6 of the object 4 to be coated It is.

また、前記乾燥室５に前記塗工を終えたフィルム状の被塗工体４が搬送導入される導入部13と、搬送導出される導出部14とを設け、この乾燥室５の搬送方向一側に前記熱風送風部７を設け反対側に前記熱風排出部８を設けて、搬送通過させるフィルム状の被塗工体４に沿って熱風が送風排出されるように構成し、この被塗工体４と近接対向状態にして被塗工体４の面方向に並設状態に配設する多数の前記ヒータ棒状部11から成る前記乾燥用ヒータ部９を配設し、このヒータ棒状部11に前記熱風導風部12を突設して、前記熱風送風部７から送り込まれる熱風を受け止め下方へ案内しこのヒータ棒状部11間の前記通風間隙10を介して下方の前記被塗工体４の塗工膜６に向けて導風するように構成したことを特徴とする請求項１記載の薄膜塗工装置に設ける乾燥装置に係るものである。   Further, the drying chamber 5 is provided with an introduction portion 13 through which the film-like coated body 4 having been coated is conveyed and introduced, and a derivation portion 14 through which the coating is led out. The hot air blowing part 7 is provided on the side and the hot air discharging part 8 is provided on the opposite side so that the hot air is blown and discharged along the film-like coated body 4 to be conveyed and passed. The drying heater section 9 comprising a large number of the heater rod-shaped portions 11 arranged in a state of being opposed to the body 4 and arranged in parallel in the surface direction of the coated body 4 is disposed. The hot air guide part 12 is provided so as to receive the hot air sent from the hot air blowing part 7 and guide it downward, through the air gap 10 between the heater rod-like parts 11, The thin film coating apparatus according to claim 1, wherein the thin film coating apparatus is configured to guide air toward the coating film 6. Those relating to that drying apparatus.

また、前記ヒータ棒状部11は、熱源を内装若しくは高温媒体を流通させこの熱により表面から赤外線を発する赤外線ヒータとし、この各ヒータ棒状部11の長さ方向が前記被塗工体４の搬送方向と直交する方向にしてこの被塗工体４の搬送方向に並設状態に、被塗工体４の上方に近接配設したことを特徴とする請求項１，２のいずれか１項に記載の薄膜塗工装置に設ける乾燥装置に係るものである。   The heater bar 11 is an infrared heater that heats an internal heat source or circulates a high-temperature medium and emits infrared rays from the surface by the heat. The length direction of each heater bar 11 is the transport direction of the object 4 to be coated. 3. The apparatus according to claim 1, wherein the substrate 4 is disposed close to the upper side of the coated body 4 in a direction perpendicular to the conveying direction of the coated body 4. This relates to a drying apparatus provided in the thin film coating apparatus.

また、前記熱風導風部12は、搬送方向に送風される前記熱風を受け止めこの熱風を下方に案内する傾斜導風板面15を有する構成としたことを特徴とする請求項１〜３のいずれか１項に記載の薄膜塗工装置に設ける乾燥装置に係るものである。   The hot air guide section 12 has an inclined air guide plate surface 15 that receives the hot air blown in the conveying direction and guides the hot air downward. This relates to a drying apparatus provided in the thin film coating apparatus described in item 1.

本発明は上述のように構成したから、乾燥室内での熱風による表面乾燥を行う熱風乾燥と、乾燥用ヒータ部（例えば赤外線ヒータ）による輻射熱乾燥との併用により、スピーディーに塗工膜を表面及び内部から加熱乾燥でき、しかもこの乾燥用ヒータ部の輻射熱による内部加熱乾燥の効率を高めるべく塗工膜に近づけても、熱風乾燥の乾燥効果を十分に維持しつつたとえ塗工膜から暴爆性の気化ガスが生じても危険濃度になるおそれも解消でき、乾燥能力の向上によるフィルム塗工の量産性を高めることができ、また小型化を図れると共に、前述のような危険性もなく実用性にも優れた画期的な薄膜塗工装置に設ける乾燥装置となる。   Since the present invention is configured as described above, the surface of the coating film can be speedily formed by using hot air drying that performs surface drying with hot air in a drying chamber and radiant heat drying using a drying heater (for example, an infrared heater). Even if it is close to the coating film to increase the efficiency of internal heating drying by radiant heat of this drying heater part, it can explode from the coating film while maintaining the drying effect of hot air drying sufficiently Even if the vaporized gas is generated, the risk of dangerous concentration can be eliminated, the mass productivity of film coating can be improved by improving the drying capacity, and the size can be reduced, and there is no danger as mentioned above. In addition, it becomes a drying apparatus provided in an innovative and innovative thin film coating apparatus.

即ち、本発明は、単に熱風乾燥と乾燥ヒータ部（赤外線ヒータ）との併用によって乾燥能力が向上するだけでなく、この乾燥用ヒータ部をフィルム状の被塗工体に近接配設して一層乾燥能力を向上させることができ、しかもこのように近づけてもこの乾燥用ヒータ部を単なるプレート体とせずヒータ電熱線などの熱源を内装若しくは高温水蒸気などの高温媒体を流通させてセラミックなどの表面から赤外線を発する棒状のヒータ棒状部が通風間隙を介して並設した構成、即ち例えば端部が折り返し連設する連通状態の一本のヒータ棒状部が左右で折り返し反転して通風間隙を介して多数並設し所定範囲を略均一に覆う構成とし、熱風がこの通風間隙を行きかって熱風乾燥の効果も維持されると共に、この乾燥用ヒータ部をこのように近接しても塗工膜から気化する気化ガスが留まって危険濃度以上となるおそれもなく、更に本発明は、この熱風をこの通風間隙を介して乾燥用ヒータ部と塗工膜との間に導風する熱風導風部を備えたから、一層熱風による乾燥効果が維持されつつ気化ガスの濃度を高めることも防止でき、極めて実用性に優れることとなる。   That is, according to the present invention, not only the drying performance is improved by the combined use of hot air drying and a drying heater section (infrared heater), but the drying heater section is disposed close to the film-like object to be coated. The drying capacity can be improved, and even if it is close to this, the heater part for drying is not a simple plate body, but a heat source such as a heater heating wire is installed inside or a high-temperature medium such as high-temperature steam is circulated to the surface such as ceramic. The rod-shaped heater rod-like portions emitting infrared rays are arranged in parallel via the ventilation gap, that is, for example, one heater rod-like portion in the communication state in which the end portion is folded back and up is turned upside down and reversed through the ventilation gap. A large number are arranged in parallel to cover a predetermined range substantially uniformly, and the hot air travels through the ventilation gap to maintain the effect of hot air drying, and the drying heater section is placed close to the heating air. There is no fear that the vaporized gas that evaporates from the coating film stays above the dangerous concentration, and the present invention further provides hot air that guides the hot air between the drying heater section and the coating film through the ventilation gap. Since the air guide portion is provided, the concentration of the vaporized gas can be prevented from being increased while the drying effect by the hot air is further maintained, and the practicality is extremely excellent.

また、請求項２，３，４記載の発明においては、更に本発明を一層簡易な構成で容易に実現できる一層優れた薄膜塗工装置に設ける乾燥装置となる。   Further, in the inventions according to claims 2, 3 and 4, the present invention is a drying apparatus provided in a more excellent thin film coating apparatus which can be easily realized with a simpler configuration.

第一実施例の概略構成説明図である。It is schematic structure explanatory drawing of a 1st Example. 第一実施例の要部の説明正面図である。It is a description front view of the principal part of a 1st Example. 第一実施例の要部の説明斜視図である。It is a description perspective view of the principal part of a 1st Example. 第二実施例の概略構成図である。It is a schematic block diagram of 2nd Example. 第二実施例の要部の説明斜視図である。It is a description perspective view of the principal part of 2nd Example.

好適と考える本発明の実施形態を、図面に基づいて本発明の作用を示して簡単に説明する。   An embodiment of the present invention which is considered to be suitable will be briefly described with reference to the drawings showing the operation of the present invention.

薄膜塗工装置によって塗工を終えたフィルム状の被塗工体４は、乾燥室５を搬送通過することでこの被塗工体４表面に塗工形成された塗工膜６は乾燥される。   The film-like coated body 4 that has been coated by the thin film coating apparatus is transported and passed through the drying chamber 5 so that the coating film 6 formed on the surface of the coated body 4 is dried. .

即ち、この被塗工体４の塗工膜６は、乾燥室５内に送り込まれる熱風による熱風乾燥と、乾燥用ヒータ部９による輻射熱による乾燥とにより効率良くスピーディーに乾燥されるため、従来構成に比して搬送スピードを上げることができ、量産化が図れる。   That is, the coating film 6 of the object to be coated 4 is efficiently and speedily dried by hot air drying by hot air sent into the drying chamber 5 and drying by radiant heat by the drying heater unit 9. Compared to, the conveyance speed can be increased and mass production can be achieved.

また、搬送スピードが同じであれば乾燥能力の向上により乾燥室５長を短くでき小型化が図れる。   Further, if the transport speed is the same, the drying chamber 5 can be shortened by improving the drying capacity, and the size can be reduced.

また、本発明では、このように塗工膜６を熱風乾燥による表面加熱乾燥と輻射熱による内部加熱乾燥とによって乾燥能力が向上するが、この輻射熱を与える乾燥用ヒータ部９を被塗工体４の塗工膜６に近接配設することで一層乾燥効率を向上させることができる。   In the present invention, the coating film 6 is improved in drying capability by surface heating drying by hot air drying and internal heating drying by radiant heat as described above. The drying efficiency can be further improved by disposing the coating film 6 in the vicinity.

単に所定範囲を均一に加熱乾燥するようにプレート状の乾燥用ヒータ部を被塗工体４の塗工膜６の上方に近接配設すると、このプレート状の乾燥用ヒータ部によって熱風が遮られたり、塗工膜６から生じる気化ガスが放散されずこの気化ガスが暴爆性を有する場合暴爆危険濃度に近づくおそれがあるため、十分にこのプレート状の乾燥用ヒータ部を近接することができず十分な輻射熱による内部加熱乾燥を行うことができなかった。しかし、この点本発明は、この乾燥用ヒータ部９をプレート体でなくヒータ棒状部11を通風間隙10を介して並設した構成として、この乾燥用ヒータ部９の並設されたヒータ棒状部11で所定範囲の塗工膜６を内部から加熱乾燥すると共に、この乾燥用ヒータ部９は多数の通風間隙10を有するため、熱風や塗工膜６からの気化ガスは遮られず、熱風はこの通風間隙10を介して塗工膜６に行き届き、また気化ガスも通風間隙10を介して排出される。   When a plate-shaped drying heater portion is disposed close to the upper part of the coating film 6 of the object 4 so as to simply heat and dry a predetermined range, hot air is blocked by the plate-shaped drying heater portion. If the vaporized gas generated from the coating film 6 is not dissipated and the vaporized gas has explosive properties, there is a risk of approaching a dangerous explosion concentration. Internal heating drying with sufficient radiant heat could not be performed. However, in this respect, the present invention has a configuration in which the drying heater portion 9 is arranged in parallel with the heater rod-like portion 11 through the ventilation gap 10 instead of the plate body. 11, the coating film 6 in a predetermined range is heated and dried from the inside, and since the drying heater section 9 has a large number of ventilation gaps 10, the hot air and the vaporized gas from the coating film 6 are not blocked, The coating film 6 reaches the coating film 6 through the ventilation gap 10, and vaporized gas is also discharged through the ventilation gap 10.

しかも本発明は、この熱風が良好にこの通風間隙10を介して塗工膜６に導入案内する熱風導風部12を備えたことから、熱風送風部７から送り込まれる熱風は、この熱風導風部12により導風されて通風間隙10を介して一層確実に塗工膜６に導風される。   In addition, since the present invention includes the hot air guide portion 12 that guides and guides the hot air to the coating film 6 through the ventilation gap 10, the hot air sent from the hot air blowing portion 7 is the hot air guide air. The air is guided by the portion 12 and is more reliably guided to the coating film 6 through the ventilation gap 10.

従って、乾燥用ヒータ部９を近接させて輻射熱による内部加熱乾燥が効率良く行えると共に、熱風も確実に導風されて塗工膜６に確実に行き届き熱風による表面加熱乾燥も効率良く行え、しかもたとえこの塗工膜６から暴爆性の気化ガスが生じるとしても、この熱風導風部12により塗工膜６表面に確実に熱風の気流を生じさせるため、前述のように熱風による表面乾燥と共に、気化ガスも熱風と共に良好に排出され、気化ガスの濃度が高まることも防止でき極めて実用性に優れた乾燥装置となる。   Accordingly, the drying heater unit 9 is brought close to the inside and can be efficiently heated and dried by radiant heat, and the hot air is surely guided to reach the coating film 6 and can be efficiently heated and heated by the hot air. Even if explosive vaporized gas is generated from the coating film 6, in order to surely generate a hot air stream on the surface of the coating film 6 by the hot air guide section 12, as described above, The vaporized gas is also discharged well together with the hot air, and the concentration of the vaporized gas can be prevented from increasing, resulting in a very practical drying apparatus.

本発明の具体的な実施例について図面に基づいて説明する。   Specific embodiments of the present invention will be described with reference to the drawings.

本実施例は、巻取ロール17から引き出したフィルム状の被塗工体４を塗工用のノズル部１と対向する支持ロール18を介して引き出し搬送し、このノズル部１の先端吐出孔２から塗工液３を吐出させて、この支持ロール18で支承されている被塗工体４の片面に塗工した後、これを下側に配した本発明に係る乾燥装置を搬送通過させて乾燥し、更に連続して同様の薄膜塗工装置によって反対面も塗工した後に、上側に配した本発明に係る乾燥装置を更に搬送通過させて乾燥し巻き取る両面薄膜塗工装置を構成したものである。   In this embodiment, the film-like object 4 pulled out from the take-up roll 17 is drawn out and conveyed through a support roll 18 facing the coating nozzle part 1, and the tip discharge hole 2 of the nozzle part 1 is transported. The coating liquid 3 is discharged from the substrate and applied to one side of the object to be coated 4 supported by the support roll 18, and then transported and passed through the drying apparatus according to the present invention disposed on the lower side. After drying and further continuously coating the opposite surface with the same thin-film coating device, the double-sided thin-film coating device is configured to further transport and pass the drying device according to the present invention disposed on the upper side to dry and wind up Is.

即ち、本実施例の乾燥装置は、ノズル部１の先端吐出孔２から塗工液３を吐出しながら、このノズル部１と対向するフィルム状の被塗工体４をこのノズル部１に対して搬送させることで前記フィルム状の被塗工体４に塗工液３を薄膜状に塗工するように構成した薄膜塗工装置の搬送下流側に設ける乾燥装置であって、前記塗工を終えたフィルム状の被塗工体４を搬送通過させる乾燥室５に、被塗工体４の塗工膜６を熱風乾燥させる熱風を送出する熱風送風部７とこの熱風を排出する熱風排出部８とを設けて、この熱風送風部７から送り込まれた熱風で塗工膜６の表面を加熱乾燥し、この熱風乾燥する熱風をこの塗工膜６から生じる気化ガスと共に熱風排出部８から乾燥室５外へ排出されるように構成している。   That is, the drying apparatus of the present embodiment discharges the coating liquid 3 from the tip discharge hole 2 of the nozzle unit 1 while the film-shaped coated body 4 facing the nozzle unit 1 is applied to the nozzle unit 1. A drying device provided on the downstream side of a thin film coating apparatus configured to apply the coating liquid 3 in a thin film shape to the film-like coated body 4 by being conveyed, A hot air blowing section 7 for sending hot air for drying hot air to dry the coating film 6 of the coated body 4 and a hot air discharging section for discharging the hot air to the drying chamber 5 through which the finished film-shaped coated body 4 is conveyed and passed. 8, the surface of the coating film 6 is heated and dried with hot air sent from the hot air blowing unit 7, and the hot air to be dried is dried from the hot air discharge unit 8 together with the vaporized gas generated from the coating film 6. It is configured to be discharged out of the chamber 5.

そして本実施例ではこの熱風乾燥と併用させて、輻射熱で塗工膜６の内部を加熱乾燥させて乾燥能力を高める乾燥用ヒータ部９をフィルム状の被塗工体４に対向状態に近接配設するが、この乾燥用ヒータ部９は、プレート体とせずに、前記熱風が通過する通風間隙10を介して多数のヒータ棒状部11が前記被塗工体４の面方向に並設した構成として、フィルム状の被塗工体４にフィルム振動が生じる場合に接触してしまう位置までは近づけないものの、前述した熱風乾燥や気化ガスによる暴爆のおそれなどを考慮しつつできるだけ近接して、輻射熱による乾燥を併用して乾燥能力の一層の向上を図っている。   In this embodiment, in combination with this hot air drying, a drying heater portion 9 is provided in close proximity to the film-shaped coated body 4 so as to heat and dry the inside of the coating film 6 with radiant heat to increase the drying capacity. However, the heater 9 for drying is not a plate body, but a configuration in which a large number of heater rod-like portions 11 are arranged in parallel in the surface direction of the object to be coated 4 through the ventilation gap 10 through which the hot air passes. As close as possible while considering the possibility of hot air drying or explosive explosion due to vaporized gas, etc. The drying capacity is further improved by using drying by radiant heat.

そして更に本実施例では、この乾燥用ヒータ部９のヒータ棒状部11間の前記通風間隙10を介して、前記熱風送風部７から送り込まれる熱風を前記被塗工体４の塗工膜６に向けて導風する熱風導風部12を備えた構成としている。   Further, in this embodiment, the hot air sent from the hot air blowing section 7 is applied to the coating film 6 of the object to be coated 4 through the ventilation gap 10 between the heater rod-shaped sections 11 of the drying heater section 9. The structure is provided with a hot air guide section 12 that guides air toward the head.

以下、更に具体的に説明すると、本実施例では、例えば、アルミ製又は銅製などの金属製フィルムを被塗工体４とし、この表面にコバルト酸リチウムなどの正極活性物質又はグラファイトなどの負極活性物質にバインダー（ＮＮＰなどの溶媒）などを混合しこれを塗工液３として、１００μｍオーダーの薄膜を両面に塗工形成するリチウムイオン電池形成材を作製する薄膜塗工装置で、この片面毎塗工する各薄膜塗工装置の搬送下流側に夫々設けられる乾燥装置である。   More specifically, in the present embodiment, for example, a metal film such as aluminum or copper is used as an object to be coated 4, and a positive electrode active material such as lithium cobaltate or a negative electrode activity such as graphite is formed on this surface. This is a thin film coating device that produces a lithium ion battery forming material that mixes a substance with a binder (solvent such as NNP) and the like as a coating liquid 3 and coats and forms a thin film of the order of 100 μm on both sides. It is the drying apparatus provided in the conveyance downstream of each thin film coating apparatus to work.

この本実施例の乾燥装置のこの塗工を終えた金属フィルムの被塗工体４を搬送通過させる前記乾燥室５は、この被塗工体４が搬送導入される導入部13と、搬送導出される導出部14とを設け、この乾燥室５の搬送方向一側に前記熱風送風部７を設け反対側に前記熱風排出部８を設けて、搬送通過させるフィルム状の被塗工体４の塗工膜６を設けた上面の上方でこの搬送方向に沿って熱風が送風排出されるように構成している。   In the drying apparatus of this embodiment, the drying chamber 5 through which the coated body 4 of the metal film that has been coated is transported and passed is introduced into the introduction section 13 into which the coated body 4 is transported and transported out. Of the film-like coated body 4 to be transported and passed by providing the hot air blowing section 7 on one side in the transport direction of the drying chamber 5 and the hot air discharge section 8 on the opposite side. It is configured such that hot air is blown and exhausted along the transport direction above the upper surface provided with the coating film 6.

また本実施例では、乾燥室５を複数ブロックに分けて夫々が連設した構成とし、各ブロック乾燥室毎に搬送上流側に搬送方向に向かって熱風を送出する熱風送風部７と、これと対向するように反対側に熱風排出部８とを設けた構成とし、この各ブロック乾燥室の下側に設けた支承ローラ19に支承させてフィルム状の被塗工体４を乾燥室５内を搬送通過するように引き取り搬送する構成とし、この乾燥室５の上方で熱風送風部７から熱風排出部８へと熱風が送風されこの被塗工体４の上面に塗工形成された塗工膜６を熱風乾燥するように構成している。   Further, in this embodiment, the drying chamber 5 is divided into a plurality of blocks, and each block is arranged continuously, and a hot air blowing unit 7 that sends hot air toward the conveying direction upstream of each block drying chamber, and A hot air discharge unit 8 is provided on the opposite side so as to face each other, and is supported by a support roller 19 provided on the lower side of each block drying chamber so that the film-like object to be coated 4 is placed in the drying chamber 5. The coating film is formed so as to be picked up and transported so as to pass through, and the hot air is blown from the hot air blowing unit 7 to the hot air discharging unit 8 above the drying chamber 5 and is coated on the upper surface of the coated body 4. 6 is configured to dry with hot air.

この被塗工体４と近接対向状態にして被塗工体４の面方向に並設状態に配設する多数の前記ヒータ棒状部11から成る前記乾燥用ヒータ部９をこの被塗工体４の上方に配設し、このヒータ棒状部11に前記熱風導風部12を突設して、前記熱風送風部７から送り込まれる熱風を受け止め下方へ案内しこのヒータ棒状部11間の前記通風間隙10を介して下方の被塗工体４の塗工膜６に向けて導風するように構成している。   The drying heater section 9 composed of a number of the heater rod-shaped portions 11 arranged in a state of being opposed to the coated body 4 and arranged in parallel in the surface direction of the coated body 4 is provided with the drying body 4. The hot air guide part 12 is provided on the heater bar 11 so as to receive the hot air sent from the hot air blowing part 7 and guide it downward. The ventilation gap between the heater bar parts 11 10 is configured to guide air toward the coating film 6 of the lower body 4 to be coated.

また、前記ヒータ棒状部11は、高温水蒸気やオイルなど高温媒体を流通させこの熱により表面のセラミックから赤外線を発する赤外線ヒータ（ＩＲヒータ）としている。   The heater bar 11 is an infrared heater (IR heater) that circulates a high-temperature medium such as high-temperature steam or oil and emits infrared rays from the surface ceramic by this heat.

具体的には、本実施例では高温水蒸気を流通させるパイプをセラミックで形成若しくはセラミックを被覆し、このヒータ棒状部11を左右で折り返して被塗工体４の所定範囲をこの折り返される多数の並設したヒータ棒状部11で覆い、この連通する各ヒータ棒状部11に高温水蒸気を流通させて表面から発せられる赤外線による輻射熱によって塗工膜６を内部からも加熱乾燥する折り返し棒状部並設形のＩＲヒータで構成している。   Specifically, in this embodiment, the pipe through which the high-temperature steam is circulated is formed of ceramic or coated with ceramic, and the heater rod-like portion 11 is folded back to the left and right so that a predetermined range of the object to be coated 4 is folded. Folded rod-shaped portion side-by-side type that covers with the heater rod-shaped portion 11 provided, and heats and dries the coating film 6 from the inside by radiant heat generated from the surface by circulating high-temperature steam through each of the communicating heater rod-shaped portions 11 It consists of an IR heater.

言い換えると、プレート状のＩＲヒータでなく、高温水蒸気を通して表面から赤外線を発する左右で折り返し反転する連通した多数のヒータ棒状部11が並設したタイプのＩＲヒータと構成し、この各ヒータ棒状部11の長さ方向が前記被塗工体４の搬送方向と直交する方向にしてこの被塗工体４の搬送方向に並設状態となるようにして、被塗工体４の上方に対向状態に近接配設した構成としている。   In other words, it is not a plate-shaped IR heater, but is configured as an IR heater of a type in which a large number of connected heater rod-like portions 11 that fold infrared light from the surface through high-temperature water vapor and are reversed are arranged side by side. The length direction of the coating body 4 is set in a direction perpendicular to the transport direction of the coated body 4 so as to be arranged in parallel with the transport direction of the coated body 4, so that it is opposed to the top of the coated body 4. It is set as the structure arrange | positioned closely.

また、前記熱風導風部12は、本実施例では前述のように乾燥用ヒータ部９のヒータ棒状部11に突設する構成とし、搬送方向に送風される前記熱風を受け止めこの熱風を下方に案内する傾斜導風板面15を有する構成としている。   In addition, in the present embodiment, the hot air guide section 12 is configured to protrude from the heater rod-shaped section 11 of the drying heater section 9 as described above, receives the hot air blown in the transport direction, and directs the hot air downward. The inclined wind guide plate surface 15 for guiding is used.

具体的には、乾燥用ヒータ部９の各ヒータ棒状部11、又は一本若しくは複数本置きに前記熱風導風部12を突設する構成とし、この各熱風導風部12は、ヒータ棒状部11の長さ方向に長さを有する帯板状の傾斜導風板面15を有する傾斜案内板としてヒータ棒状部11に熱風の風上側に向かって傾斜突設した構成としている。   Specifically, each heater rod-like portion 11 of the drying heater portion 9 or one or a plurality of the hot-air drafting portions 12 is provided so as to protrude, and each hot-air drafting portion 12 includes a heater rod-like portion. As the inclined guide plate having the strip plate-like inclined wind guide plate surface 15 having a length in the length direction of 11, the heater rod-like portion 11 is inclined and protruded toward the windward side of the hot air.

即ち、フィルム状の被塗工体４の幅方向にこの被塗工体４上方に近接させて架設状態に配設され、且つ被塗工体４の長さ方向（搬送方向）に通風間隙10を介して多数並設したヒータ棒状部11上に、熱風送風部７側に向けて傾斜突設することで、この熱風送風部７側に傾いた傾斜導風板面15を有する構成している。   In other words, the film-like object 4 is arranged in the erected state in the width direction of the object 4 in the width direction, and the ventilation gap 10 is arranged in the length direction (conveying direction) of the object 4 to be coated. On the heater rod-like portions 11 arranged in parallel via the bosses, the inclined air guide plate surface 15 is inclined toward the hot air blowing portion 7 side by being inclined and projected toward the hot air blowing portion 7 side. .

また、この熱風導風部12はヒータ棒状部11の上面で、熱風の気流に乱れが生じないように基端部はこのヒータ棒状部11上を二面（二枚の板面）で囲むように覆いこの二面の突出先端が先細るように形成している。   The hot air guide portion 12 is the upper surface of the heater rod-shaped portion 11, and the base end portion surrounds the heater rod-shaped portion 11 with two surfaces (two plate surfaces) so as not to disturb the hot air flow. It is formed so that the protruding tips of these two surfaces taper.

また、熱風送風部７から遠い程各熱風導風部12の突出長を高く形成しても良い。   Moreover, you may form the protrusion length of each hot-air drafting part 12 so that it is far from the hot-air ventilation part 7. FIG.

また、第二実施例に示すように、熱風導風部12として更に乾燥室５の上部に下方へ熱風を案内導風する傾斜導風板面15を有する熱風導風垂下部16を設けても良い。   In addition, as shown in the second embodiment, the hot air guide portion 12 may further include a hot air guide portion 16 having an inclined air guide plate surface 15 for guiding the hot air downward in the upper portion of the drying chamber 5. good.

尚、本発明は、実施例に限られるものではなく、各構成要件の具体的構成は適宜設計し得るものである。   Note that the present invention is not limited to the embodiments, and the specific configuration of each component can be designed as appropriate.

１ ノズル部
２ 先端塗工孔
３ 塗工液
４ 被塗工体
５ 乾燥室
６ 塗工膜
７ 熱風送風部
８ 熱風排出部
９ 乾燥用ヒータ部
10 通風間隙
11 ヒータ棒状部
12 熱風導風部
13 導入部
14 導出部
15 傾斜導風板面 DESCRIPTION OF SYMBOLS 1 Nozzle part 2 Tip coating hole 3 Coating liquid 4 To-be-coated body 5 Drying chamber 6 Coating film 7 Hot air blowing part 8 Hot air discharge part 9 Drying heater part
10 Ventilation gap
11 Heater bar
12 Hot air guide section
13 Introduction
14 Derivation part
15 Inclined wind guide plate surface

Claims (4)

ノズル部の先端吐出孔から塗工液を吐出しながら、このノズル部と対向するフィルム状の被塗工体をこのノズル部に対して搬送させることで前記フィルム状の被塗工体に塗工液を薄膜状に塗工するように構成した薄膜塗工装置に設ける乾燥装置であって、前記塗工を終えたフィルム状の被塗工体を搬送通過させる乾燥室に、前記被塗工体の塗工膜を熱風乾燥させる熱風を送出する熱風送風部とこの熱風を排出する熱風排出部とを設けて、前記熱風送風部から送り込まれた熱風で前記被塗工体の塗工膜を熱風乾燥しこの熱風をこの塗工膜から生じる気化ガスと共に前記熱風排出部から前記乾燥室外へ排出されるように構成し、前記熱風乾燥に加えて輻射熱で前記塗工膜を乾燥させる乾燥用ヒータ部を前記フィルム状の被塗工体に対向状態に配設し、この乾燥用ヒータ部は、前記乾燥室の被塗工体を覆うプレート体とせずに、前記熱風が通過する通風間隙を介して多数のヒータ棒状部が前記被塗工体の面方向に並設した構成とし、この乾燥用ヒータ部のヒータ棒状部間の前記通風間隙を介して、前記熱風送風部から送り込まれる熱風を前記被塗工体の塗工膜に向けて導風する熱風導風部を備えたことを特徴とする薄膜塗工装置に設ける乾燥装置。   While discharging the coating liquid from the tip discharge hole of the nozzle part, the film-like coated object facing this nozzle part is conveyed to this nozzle part, thereby coating the film-like coated object. A drying apparatus provided in a thin film coating apparatus configured to apply a liquid in a thin film shape, wherein the coated body is placed in a drying chamber that conveys and passes the film-shaped coated body that has been coated. A hot air blowing unit for sending hot air for drying hot air and a hot air discharging unit for discharging the hot air are provided, and the coating film of the object to be coated is heated with hot air sent from the hot air blowing unit. A drying heater unit configured to dry and discharge the hot air together with vaporized gas generated from the coating film from the hot air discharge unit to the outside of the drying chamber, and dry the coating film with radiant heat in addition to the hot air drying Is placed in opposition to the film-like workpiece. The drying heater section is not a plate body that covers the object to be coated in the drying chamber, and a large number of heater rod-shaped sections are arranged in the surface direction of the object to be coated through a ventilation gap through which the hot air passes. A hot air guide for directing hot air sent from the hot air blowing section toward the coating film of the object to be coated through the ventilation gap between the heater rod-shaped sections of the drying heater section. The drying apparatus provided in the thin film coating apparatus characterized by including the part. 前記乾燥室に前記塗工を終えたフィルム状の被塗工体が搬送導入される導入部と、搬送導出される導出部とを設け、この乾燥室の搬送方向一側に前記熱風送風部を設け反対側に前記熱風排出部を設けて、搬送通過させるフィルム状の被塗工体に沿って熱風が送風排出されるように構成し、この被塗工体と近接対向状態にして被塗工体の面方向に並設状態に配設する多数の前記ヒータ棒状部から成る前記乾燥用ヒータ部を配設し、このヒータ棒状部に前記熱風導風部を突設して、前記熱風送風部から送り込まれる熱風を受け止め下方へ案内しこのヒータ棒状部間の前記通風間隙を介して下方の前記被塗工体の塗工膜に向けて導風するように構成したことを特徴とする請求項１記載の薄膜塗工装置に設ける乾燥装置。   The drying chamber is provided with an introduction portion for transporting and introducing the film-shaped coated body after finishing coating, and a lead-out portion for transporting and leading, and the hot air blowing portion is provided on one side in the transport direction of the drying chamber. The hot air discharge section is provided on the opposite side of the installation so that the hot air is blown and discharged along the film-like coated body to be conveyed and passed, and the coated object is placed in a state of being opposed to the coated body. The drying heater portion composed of a number of the heater rod-shaped portions arranged in parallel in the surface direction of the body is disposed, and the hot air blowing portion projects from the heater rod-shaped portion, and the hot air blowing portion It is configured to receive and guide the hot air sent from below and guide the air downward toward the coating film of the object to be coated through the ventilation gap between the heater rod-like portions. A drying apparatus provided in the thin film coating apparatus according to 1. 前記ヒータ棒状部は、熱源を内装若しくは高温媒体を流通させこの熱により表面から赤外線を発する赤外線ヒータとし、この各ヒータ棒状部の長さ方向が前記被塗工体の搬送方向と直交する方向にしてこの被塗工体の搬送方向に並設状態に、被塗工体の上方に近接配設したことを特徴とする請求項１，２のいずれか１項に記載の薄膜塗工装置に設ける乾燥装置。   The heater rod-shaped portion is an infrared heater that radiates infrared rays from the surface by circulating a heat source in an interior or a high-temperature medium, and the length direction of each heater rod-shaped portion is a direction orthogonal to the transport direction of the object to be coated. The thin film coating apparatus according to any one of claims 1 and 2, wherein the thin film coating apparatus according to any one of claims 1 and 2, wherein the thin film coating apparatus is disposed adjacent to and above the coated body in a state of being juxtaposed in the conveying direction of the lever coated body. Drying equipment. 前記熱風導風部は、搬送方向に送風される前記熱風を受け止めこの熱風を下方に案内する傾斜導風板面を有する構成としたことを特徴とする請求項１〜３のいずれか１項に記載の薄膜塗工装置に設ける乾燥装置。   The hot air guide part has an inclined air guide plate surface that receives the hot air blown in the conveying direction and guides the hot air downward. The drying apparatus provided in the thin film coating apparatus described.
JP2010152704A 2010-07-05 2010-07-05 Drying device in thin film coating device Withdrawn JP2012013383A (en)

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* Cited by examiner, † Cited by third party
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KR20130080754A (en) * 2012-01-05 2013-07-15 삼성에스디아이 주식회사 Heat treatment apparatus
JP2014086172A (en) * 2012-10-19 2014-05-12 Toyota Motor Corp Method for manufacturing electrode for secondary battery and electrode manufacturing device
WO2014087473A1 (en) * 2012-12-03 2014-06-12 新神戸電機株式会社 Electrode plate drying device and electrode plate drying method
JP2014192029A (en) * 2013-03-27 2014-10-06 Hitachi High-Technologies Corp Manufacturing device for lithium ion battery and manufacturing method of lithium ion battery
JP2019121545A (en) * 2018-01-10 2019-07-22 トヨタ自動車株式会社 Manufacturing method of strip electrode plate

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20130080754A (en) * 2012-01-05 2013-07-15 삼성에스디아이 주식회사 Heat treatment apparatus
JP2014086172A (en) * 2012-10-19 2014-05-12 Toyota Motor Corp Method for manufacturing electrode for secondary battery and electrode manufacturing device
WO2014087473A1 (en) * 2012-12-03 2014-06-12 新神戸電機株式会社 Electrode plate drying device and electrode plate drying method
JP2014192029A (en) * 2013-03-27 2014-10-06 Hitachi High-Technologies Corp Manufacturing device for lithium ion battery and manufacturing method of lithium ion battery
JP2019121545A (en) * 2018-01-10 2019-07-22 トヨタ自動車株式会社 Manufacturing method of strip electrode plate

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