JP2007253013A - Intermittent coating apparatus, production coating method of electrode plate for electric batteries using the apparatus, and electric battery having electrode plate for electric batteries - Google Patents

Intermittent coating apparatus, production coating method of electrode plate for electric batteries using the apparatus, and electric battery having electrode plate for electric batteries Download PDF

Info

Publication number
JP2007253013A
JP2007253013A JP2006078405A JP2006078405A JP2007253013A JP 2007253013 A JP2007253013 A JP 2007253013A JP 2006078405 A JP2006078405 A JP 2006078405A JP 2006078405 A JP2006078405 A JP 2006078405A JP 2007253013 A JP2007253013 A JP 2007253013A
Authority
JP
Japan
Prior art keywords
coating
intermittent
back cylinder
suck back
valve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
JP2006078405A
Other languages
Japanese (ja)
Inventor
Hideki Usuki
秀樹 臼杵
Junichi Nakazono
準一 中園
Hirobumi Ito
博文 伊藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP2006078405A priority Critical patent/JP2007253013A/en
Publication of JP2007253013A publication Critical patent/JP2007253013A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Landscapes

  • Coating Apparatus (AREA)
  • Battery Electrode And Active Subsutance (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide an intermittent coating apparatus which can control an amount of a coat starting end part coated, control rising of the coat starting end part, and prevent peeling of an electrode plate in rolling. <P>SOLUTION: The intermittent coating apparatus has a roll for making a base material continuously run, a die head for coating a coating liquid on the base material, an intermittent means for intermittently supplying the coating liquid to a nozzle, a circulation pipe for making the coating liquid circulate to the intermittent coating apparatus, and a discharge pipe for discharging the coating liquid, wherein the intermittent coating apparatus has a suck-buck cylinder in the circulation pipe, the intermittent means removes the coating liquid not to be used for coating in a non-coating part with the sack-back cylinder to discharge it to the die head and to the outside of a circulation system, and the pressure of the inner part of the die head can be controlled by the sack-back cylinder. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、基材表面に塗工液を塗布するダイヘッドを用いた間欠塗工装置に関する。   The present invention relates to an intermittent coating apparatus using a die head that applies a coating liquid to a substrate surface.

従来の塗工技術として、不要な塗工液を吸引で除去する機能を有するサックバックを用いたものには、ダイヘッドへの直結タイプであるものがあり、間欠塗工を目的としたものが提案されている(例えば、特許文献1、2参照)。さらに、サックバック方式を用いダイヘッド内の凝集物を取り除く塗工方法が提案されている(例えば、特許文献3参照)。
特許第2842347号公報 特開2005−222911号公報 特開2004−195345号公報
As a conventional coating technology, those using a sack back that has the function of removing unnecessary coating liquid by suction are those that are directly connected to the die head, and are proposed for intermittent coating (For example, see Patent Documents 1 and 2). Furthermore, a coating method that removes agglomerates in the die head using a suck back method has been proposed (see, for example, Patent Document 3).
Japanese Patent No. 2842347 JP 2005-222911 A JP 2004-195345 A

しかしながら、前記従来のサックバック方式を用いる塗工方法において、以下に示す問題があった。例えば、ダイヘッドとサックバックシリンダが直結された連結部からエアーが混入し、間欠塗工が出来なくなるなどの塗工不具合が発生する。特許文献1、2では、サックバックで取り除いた非塗後部塗工液を塗工時に戻すため塗工始端部の塗工量が不安定になる。具体的には、局部的に塗工量が軽くなり塗工ヌケが発生したり、逆に局部的に塗工量が重くなると、その部分が圧延時に局所的剥がれを発生するという問題があった。   However, the coating method using the conventional suck back method has the following problems. For example, air is mixed from a connecting portion where the die head and the suck-back cylinder are directly connected, which causes a coating failure such that intermittent coating cannot be performed. In patent documents 1 and 2, since the non-coating back part coating liquid removed by the suck back is returned at the time of coating, the coating amount at the coating start end becomes unstable. Specifically, when the coating amount is locally reduced and the coating is lost, or on the contrary, when the coating amount is locally increased, there is a problem that the part is locally peeled during rolling. .

また、特許文献3では次のような課題があった。1つ目の課題は塗工液枯れによるかすれが発生することである。2つ目の課題は、サックバックの振動がダイヘッドへ伝わってしまい、ダイヘッドと基材との間隔が変動し塗工液の重量が変動するため、塗工状態が不安定となるという課題があった。特に2つ目の課題において、塗工始端部の塗工量が不安定になった場合、塗工始端部の塗工重量が重くなることがある。そのような極板を圧延ロールで圧延することにより、塗工重量が重くなった部分の極板密度が高くなり、極板表面と圧延ロールの密着が増し、極板の基材と塗工部との剥がれが発生するといった課題があった。   Further, Patent Document 3 has the following problems. The first problem is the occurrence of fading due to the coating solution withering. The second problem is that the vibration of the suck back is transmitted to the die head, the distance between the die head and the base material is changed, and the weight of the coating liquid is changed, so that the coating state becomes unstable. It was. In particular, in the second problem, when the coating amount at the coating start end becomes unstable, the coating weight at the coating start end may become heavy. By rolling such an electrode plate with a rolling roll, the electrode plate density in the portion where the coating weight is increased increases, the adhesion between the electrode plate surface and the rolling roll increases, and the substrate and the coating part of the electrode plate There has been a problem that peeling occurs.

そこで、本発明は上記従来の問題点に鑑み、塗工始端部の塗工量を制御することで、極板の基材と塗工部とが剥がれたりするのを防止するための間欠塗工装置と電池用極板の提供を目的とする。   Accordingly, in view of the above-described conventional problems, the present invention controls intermittent coating to prevent the base material and the coating part of the electrode plate from peeling off by controlling the coating amount at the coating start end. An object is to provide a device and a battery electrode plate.

前記従来技術の課題を解決するために、本発明の間欠塗工装置は、基材を連続走行させるロールと、前記基材上に塗工液を塗工するダイヘッドと、ノズルに前記塗工液を間欠供給する間欠手段と、前記塗工液を前記間欠塗工装置に循環される循環配管と、および前記塗工液を排出する排出配管を有する間欠塗工装置において、前記循環配管内にサックバックシリンダを有し、前記間欠手段は、非塗工部において、塗工に使用されない塗工液を前記サックバックシリンダで取り除き、前記ダイヘッドおよび循環系の外部へ排出し、前記サックバックシリンダにより前記ダイヘッド内部の圧力を制御できることを特徴とする。   In order to solve the problems of the prior art, the intermittent coating apparatus of the present invention includes a roll for continuously running a substrate, a die head for coating a coating solution on the substrate, and the coating solution on a nozzle. An intermittent means for intermittently supplying the coating liquid, a circulation pipe for circulating the coating liquid to the intermittent coating apparatus, and an intermittent coating apparatus having a discharge pipe for discharging the coating liquid. The intermittent means has a back cylinder, the non-coating portion removes the coating liquid that is not used for coating with the suck back cylinder, and discharges it to the outside of the die head and the circulation system, and the suck back cylinder It is characterized in that the pressure inside the die head can be controlled.

本発明によると、図1〜図3に示す配管経路とし、図中の配管経路内位置にサックバックシリンダ6を配置し、塗工始端部の塗工量を制御することで、極板の基材と塗工部とが
剥がれするのを防止するための間欠塗工装置と電池用極板を提供することができる。
According to the present invention, the piping path shown in FIG. 1 to FIG. 3 is arranged, and the suck back cylinder 6 is arranged at a position in the piping path in the figure, and the coating amount at the coating start end is controlled. It is possible to provide an intermittent coating apparatus and a battery electrode plate for preventing the material and the coating part from peeling off.

以下本発明を実施するための最良の形態について、図面を参照しながら説明する。   The best mode for carrying out the present invention will be described below with reference to the drawings.

本発明の間欠塗工装置は、図1に示すように、間欠時、すなわち非塗工部においては、塗工に使用されない塗工液をサックバックシリンダ6でダイヘッド1から塗出するのを抑制する。さらに、送液ポンプ5は稼動したままであり、三方弁バルブ3でダイヘッド側に送液しない状態となっている。この時、塗工液は循環配管を通り、塗工液の保管タンクへ循環される。図2に示すように、塗工時、すなわち塗工部においては、所定量の塗工液を安定的に排出する装置である。さらに、二方弁バルブ2の開閉タイミングを調整することで、塗工始端部の塗工量を制御できるようにしたものである。   As shown in FIG. 1, the intermittent coating apparatus of the present invention suppresses coating of a coating liquid that is not used for coating from the die head 1 by the suck back cylinder 6 during the intermittent period, that is, in the non-coated portion. To do. Further, the liquid feed pump 5 remains in operation, and the three-way valve valve 3 does not feed liquid to the die head side. At this time, the coating liquid passes through the circulation pipe and is circulated to the coating liquid storage tank. As shown in FIG. 2, it is a device that stably discharges a predetermined amount of coating liquid at the time of coating, that is, at the coating part. Furthermore, the coating amount at the coating start end can be controlled by adjusting the opening and closing timing of the two-way valve 2.

具体的には、塗工始端部以外の厚みの平均値Bと塗工開始部の厚みの平均値Aの差、すなわち始端盛り上がり量〔詳しくは次のように算出する:(塗工始端部から50mmの位置までの塗工厚みの最大値)―{(塗工始端部から50mmの位置までの塗工厚みの平均値(ただし、塗工終端部から50mmの位置までの塗工厚みを除く))=始端盛り上がり量}〕を小さくすることで、極板に対する圧延時のプレスロールからの負荷を軽減させ、圧延時にその部分が高密度となり圧延ロールに取られてしまう剥がれを防止しすることが可能となる。   Specifically, the difference between the average value B of the thickness other than the coating start end portion and the average value A of the coating start portion thickness, that is, the start end rising amount [specifically, calculated as follows: (from the coating start end portion Maximum value of coating thickness up to a position of 50 mm)-{(Average value of coating thickness from the coating start end to 50 mm (excluding coating thickness from the coating end to 50 mm) ) = Starting bulge amount}] is reduced, the load from the press roll during rolling on the electrode plate can be reduced, and the portion becomes dense during rolling and can be prevented from being peeled off by the rolling roll. It becomes possible.

前述した極板の剥がれを防止するためには、塗工始端部の盛り上がり量を抑えることが重要である。しかし、盛り上がり量を抑え過ぎることにより塗工ヌケの発生が懸念される。その対策として、サックバックシリンダ6のストローク長と二方弁バルブ2の開閉タイミングを調整することにより塗工ヌケを抑制することができる。   In order to prevent the above-described peeling of the electrode plate, it is important to suppress the rising amount of the coating start end. However, there is a concern that coating leakage may occur due to excessive suppression of the amount of swelling. As a countermeasure, coating leakage can be suppressed by adjusting the stroke length of the suck back cylinder 6 and the opening / closing timing of the two-way valve 2.

図3に示すように、二方弁バルブ2とサックバックシリンダ6の間に逆止弁7を少なくとも一つ設けた間欠塗工装置である。まず、ダイヘッドへの塗工液供給を二方弁バルブ2によりストップさせ、サックバックシリンダ6で不要な塗工液を吸引する。その後、二方弁バルブ2によりダイヘッドへの塗工液供給が再開される際に、サックバックシリンダ6が戻り、逆止弁7を通して塗工液が排出される。   As shown in FIG. 3, the intermittent coating apparatus is provided with at least one check valve 7 between the two-way valve 2 and the suck back cylinder 6. First, the supply of the coating liquid to the die head is stopped by the two-way valve valve 2, and unnecessary coating liquid is sucked by the suck back cylinder 6. Thereafter, when the supply of the coating liquid to the die head is resumed by the two-way valve 2, the suck back cylinder 6 returns and the coating liquid is discharged through the check valve 7.

本発明の別の実施形態における電池用極板の製造方法は、前述した間欠塗工装置を用いた電池用極板の製造方法であり、始端盛り上がり量を15μm以下にしたことを特徴とする。始端盛り上がり量が大きい極板を圧延ロールで圧延する場合、始端盛り上がり部分にかかる圧力が大きくなり、極板表面と圧延ロールとが密着し、極板の基材と塗工部が剥がれるといった現象が発生する。このことから、始端盛り上がり量を15μm以下とするのが好ましい。   A method for manufacturing a battery electrode plate according to another embodiment of the present invention is a method for manufacturing a battery electrode plate using the above-described intermittent coating apparatus, and is characterized in that the amount of rising at the starting end is 15 μm or less. When rolling an electrode plate with a large starting edge swell with a rolling roll, the pressure applied to the starting edge swell increases, the electrode plate surface and the rolling roll come into close contact with each other, and the base material and coating part of the electrode plate peel off. appear. For this reason, it is preferable that the rising amount of the starting end is 15 μm or less.

本発明の別の実施形態における電池は、前述した間欠塗工装置および製造方法で作製した電池用極板を用いた電池である。この極板を用いて電池を作製することにより、極板の始端部の盛り上がり量を小さくし、極板に対する圧延時のプレスロールからの負荷を軽減させ、圧延時にその部分が高密度となり圧延ロールに取られてしまう剥がれを防止しすることが可能となる。   A battery according to another embodiment of the present invention is a battery using a battery electrode plate produced by the intermittent coating apparatus and the manufacturing method described above. By producing a battery using this electrode plate, the rising amount of the starting end of the electrode plate is reduced, the load from the press roll at the time of rolling on the electrode plate is reduced, and that part becomes dense during rolling, and the roll It is possible to prevent the peeling that is taken by the film.

以下に具体的な実施例について説明する。ただし、本発明は以下に説明する実施例に限定されるものではない。   Specific examples will be described below. However, the present invention is not limited to the examples described below.

平均粒経20μmのカーボン、増粘材、結着材、および水を分散して得られる粘度50
00cp(25℃、20rpm(測定装置:東機産業株式会社社製、B型粘度計)の塗工液を作製する。その塗工液を厚み10μmの基材に間欠塗工する。基材の走行方向に対し500mm塗工した後、100mmの塗工しない部分を設ける間欠塗工を行なう。基材の走行速度は10m/min、塗工量は120g/mである。
Viscosity of 50 obtained by dispersing carbon having an average particle size of 20 μm, a thickener, a binder, and water
A coating solution of 00 cp (25 ° C., 20 rpm (measurement device: manufactured by Toki Sangyo Co., Ltd., B-type viscometer)) is prepared, and the coating solution is intermittently applied to a substrate having a thickness of 10 μm. After 500 mm of coating in the running direction, intermittent coating is performed in which a non-coated portion of 100 mm is provided, the running speed of the substrate is 10 m / min, and the coating amount is 120 g / m 2 .

(実施例1)
図1、2に示される配管系において、サックバックシリンダ6のストローク長を2mmとし、二方弁バルブ2と三方弁バルブ3の開閉タイミングは調整せず、間欠塗工した。
Example 1
In the piping system shown in FIGS. 1 and 2, the stroke length of the suck back cylinder 6 was set to 2 mm, and the open / close timing of the two-way valve valve 2 and the three-way valve valve 3 was not adjusted, and intermittent coating was performed.

塗工時、塗工液塗工液は、送液ポンプ5で供給され、図2のように三方弁バルブ3が回転し、ダイヘッド1へ供給される。間欠時(非塗工時)、図1のように三方弁バルブ3が回転し、塗工液が循環配管側へ排出される。
また、図1において、サックバックシリンダ6は上昇し、ダイヘッド1内にある塗工液塗工液の一部を吸引する。吸引された塗工液は、図2において、三方弁バルブ3がダイヘッド1に塗工液が供給されている間に、逆止弁4を通し配管外部へ排出される。
At the time of coating, the coating liquid coating liquid is supplied by the liquid feed pump 5, and the three-way valve valve 3 rotates as shown in FIG. 2 and is supplied to the die head 1. When intermittent (non-coating), the three-way valve 3 rotates as shown in FIG. 1, and the coating liquid is discharged to the circulation piping side.
Further, in FIG. 1, the suck back cylinder 6 moves up and sucks a part of the coating liquid coating liquid in the die head 1. In FIG. 2, the sucked coating liquid is discharged outside the pipe through the check valve 4 while the three-way valve valve 3 is supplying the coating liquid to the die head 1.

(実施例2)
サックバックシリンダ6のストローク長を3mmとした以外は実施例1と同様にした。
(Example 2)
The same procedure as in Example 1 was performed except that the stroke length of the suck back cylinder 6 was changed to 3 mm.

(実施例3)
サックバックシリンダ6のストローク長を4mmとした以外は実施例1と同様にした。
(Example 3)
The same procedure as in Example 1 was performed except that the stroke length of the suck back cylinder 6 was changed to 4 mm.

(実施例4)
サックバックシリンダ6のストローク長を5mmとした以外は実施例1と同様にした。
Example 4
The same procedure as in Example 1 was performed except that the stroke length of the suck back cylinder 6 was changed to 5 mm.

(実施例5)
サックバックシリンダ6のストローク長を6mmとした以外は実施例1と同様にした。
(Example 5)
The same procedure as in Example 1 was performed except that the stroke length of the suck back cylinder 6 was changed to 6 mm.

(実施例6)
サックバックシリンダ6のストローク長を7mmとした以外は実施例1と同様にした。
(Example 6)
The same operation as in Example 1 was performed except that the stroke length of the suck back cylinder 6 was changed to 7 mm.

(実施例7)
サックバックシリンダ6のストローク長を8mmとした以外は実施例1と同様にした。
(Example 7)
The same procedure as in Example 1 was performed except that the stroke length of the suck back cylinder 6 was set to 8 mm.

(比較例1)
サックバックシリンダ6のストローク長を1mmとした以外は実施例1と同様にしたが、間欠塗工ができなかった。
(Comparative Example 1)
The same procedure as in Example 1 was performed except that the stroke length of the suck back cylinder 6 was set to 1 mm, but intermittent coating could not be performed.

(実施例8)
サックバックシリンダ6のストローク長を1mmとし、二方弁バルブ2の開閉タイミングを調整した。
(Example 8)
The stroke length of the suck back cylinder 6 was set to 1 mm, and the opening / closing timing of the two-way valve 2 was adjusted.

二方弁バルブ2が開くタイミングの調整は以下のようにした。塗工時において、二方弁バルブ2が開くタイミングを遅くした。そして、間欠時において、二方弁バルブ2が閉まるタイミングを早くした。具体的には、二方弁バルブ2が開くタイミングを20ミリsec遅く(以下、+20msecと表記する)し、二方弁バルブ2が閉まるタイミングを20ミリsec早く(以降、−20msecと表記する)した。それ以外は実施例1と同様にした。   The timing for opening the two-way valve 2 was adjusted as follows. At the time of coating, the opening timing of the two-way valve 2 was delayed. In addition, the timing at which the two-way valve 2 is closed during the intermittent period is advanced. Specifically, the opening timing of the two-way valve 2 is delayed by 20 milliseconds (hereinafter referred to as +20 msec), and the closing timing of the two-way valve 2 is advanced by 20 milliseconds (hereinafter referred to as -20 msec). did. Otherwise, the same procedure as in Example 1 was performed.

(実施例9)
サックバックシリンダ6のストローク長を1mmとし、二方弁バルブ2の開閉タイミングとして、二方弁バルブ2が開くタイミングを20ミリsec遅く(以降、+20msecと表記する)、二方弁バルブ2が閉まるタイミングを100ミリsec早く(以降、−100msecと表記する)した。それ以外は実施例8と同様にした。
Example 9
The stroke length of the suck back cylinder 6 is set to 1 mm, and the opening timing of the two-way valve 2 is delayed by 20 milliseconds (hereinafter referred to as +20 msec), and the two-way valve 2 is closed. The timing was advanced by 100 milliseconds (hereinafter referred to as -100 msec). Otherwise, the procedure was the same as in Example 8.

(実施例10)
図1、2に示される配管系において、サックバックシリンダ6のストローク長を1mmとし、二方弁バルブ2の開閉タイミングとして、二方弁バルブ2が開くタイミングを100ミリsec遅く(以降、+100msecと表記する)し、二方弁バルブ2が閉まるタイミングを100ミリsec早く(以降、−100msecと表記する)した。それ以外は実施例8と同様にした。
(Example 10)
In the piping system shown in FIGS. 1 and 2, the stroke length of the suck back cylinder 6 is set to 1 mm, and the opening timing of the two-way valve 2 is delayed by 100 milliseconds (hereinafter, +100 msec). The timing at which the two-way valve 2 is closed is made 100 milliseconds earlier (hereinafter referred to as -100 msec). Otherwise, the procedure was the same as in Example 8.

(実施例11)
図1、2に示される配管系において、サックバックシリンダ6のストローク長を2mmとし、二方弁バルブ2の開閉タイミングとして、二方弁バルブ2が開くタイミングを30ミリsec遅く(以降、+30msecと表記する)し、二方弁バルブ2が閉まるタイミングを100ミリsec早く(以降、−100msecと表記する)した。それ以外は実施例8と同様にした。
(Example 11)
In the piping system shown in FIGS. 1 and 2, the stroke length of the suck back cylinder 6 is 2 mm, and the opening timing of the two-way valve 2 is delayed by 30 milliseconds (hereinafter, +30 msec). The timing at which the two-way valve 2 is closed is made 100 milliseconds earlier (hereinafter referred to as -100 msec). Otherwise, the procedure was the same as in Example 8.

(実施例12)
サックバックシリンダ6のストローク長を3.5mmとし、二方弁バルブ2の開閉タイミングとして、二方弁バルブ2が開くタイミングを20ミリsec遅く(以降、+20msecと表記する)し、二方弁が閉まるタイミングを100ミリsec早く(以降、−100msecと表記する)した。それ以外は実施例8と同様にした。
(Example 12)
The stroke length of the suck back cylinder 6 is set to 3.5 mm, and the opening / closing timing of the two-way valve 2 is delayed by 20 milliseconds (hereinafter referred to as +20 msec). The closing timing was made 100 milliseconds earlier (hereinafter referred to as -100 msec). Otherwise, the procedure was the same as in Example 8.

(比較例2)
サックバックシリンダ6のストローク長を1mmとし、二方弁バルブ2の開閉タイミングとして、二方弁バルブ2が開くタイミングを20ミリsec遅く(以降、+20msecと表記する)し、二方弁バルブ2が閉まるタイミングを100ミリsec遅く(以降、+100msecと表記する)した。それ以外は実施例8と同様にしたが、間欠塗工ができなかった。
(Comparative Example 2)
The stroke length of the suck back cylinder 6 is set to 1 mm, and the opening timing of the two-way valve 2 is delayed by 20 milliseconds (hereinafter referred to as +20 msec), and the two-way valve 2 is The closing timing was delayed by 100 milliseconds (hereinafter referred to as +100 msec). Other than that was carried out similarly to Example 8, but intermittent coating was not able to be performed.

(実施例13)
図3に示したように逆止弁7を追加し、サックバックシリンダ6のストローク長を3mmとし、二方弁バルブ2と三方弁バルブ3の開閉タイミングは調整せず、間欠塗工した。
(Example 13)
As shown in FIG. 3, a check valve 7 was added, the stroke length of the suck back cylinder 6 was set to 3 mm, and the two-way valve valve 2 and the three-way valve valve 3 were not intermittently adjusted and applied intermittently.

(比較例3)
図5に示した間欠塗工装置を用いて、間欠塗工した。具体的には、ダイヘッド1側への供給と排出配管側への供給を、三方向バルブ3を切り替えることにより交互に行ない、実施例1のような排出調整のない間欠塗工装置である。
(Comparative Example 3)
Intermittent coating was performed using the intermittent coating apparatus shown in FIG. Specifically, the supply to the die head 1 side and the supply to the discharge pipe side are alternately performed by switching the three-way valve 3, and the intermittent coating apparatus with no discharge adjustment as in the first embodiment is performed.

(比較例4)
特許文献1、2に記載されている間欠塗工装置、つまり図6に示した間欠塗工装置を用いて、間欠塗工した。具体的には、排出調整をダイヘッド1から直接行なう間欠塗工装置である。
(Comparative Example 4)
The intermittent coating apparatus described in Patent Documents 1 and 2, that is, the intermittent coating apparatus shown in FIG. Specifically, it is an intermittent coating apparatus that performs discharge adjustment directly from the die head 1.

(比較例5)
特許文献3に記載されている間欠塗工装置、つまり図7に示した間欠塗工装置を用いて、間欠塗工した。具体的には、サックバックシリンダ6を用い、ダイヘッド1から余分な塗工液を排出する間欠塗工装置である。
(Comparative Example 5)
Intermittent coating was performed using the intermittent coating apparatus described in Patent Document 3, that is, the intermittent coating apparatus shown in FIG. Specifically, it is an intermittent coating apparatus that uses a suck back cylinder 6 to discharge excess coating liquid from the die head 1.

実施例1〜13、比較例1〜5について、ストローク長、二方弁バルブ2の開閉タイミングの条件と、始端盛り上がり量、間欠塗工状態、圧延時の極板の剥がれ、および総合評価を行った。
<間欠塗工状態の確認>
間欠塗工状態の可/不可の判断は以下のように行なった。間欠塗工が「可」(表1中では○で示す)の状態とは、間欠塗工部分すなわち未塗工部への塗工液付着が無い状態を表す。一方、間欠塗工が「不可」(表1中では×で示す)の状態とは、未塗工部への塗工液付着が発生した場合を表す。
<圧延時の極板の剥がれ>
圧延時の剥がれについては、目視にて、塗工部分が一部でも圧延ロール側に付着した場合を剥がれが発生した場合は「有り」(表1中では×で示す)とし、剥がれが発生しなかった場合は「無し」(表1中では○で示す)とした。
<総合評価>
総合評価判定では、間欠塗工状態が可の状態であり、且つ圧延時剥がれが発生しなかった場合をOKとして表1に「○」とし、それ以外を「×」とした。
実施例1〜13、比較例1〜5について、ストローク長、二方弁バルブ2の開閉タイミングの条件と、始端盛り上がり量、間欠塗工状態、圧延時の極板の剥がれ、および総合評価をまとめて表1に示した。
For Examples 1 to 13 and Comparative Examples 1 to 5, the stroke length, the opening / closing timing conditions of the two-way valve valve 2, the rising amount of the start end, the intermittent coating state, peeling of the electrode plate during rolling, and comprehensive evaluation are performed. It was.
<Confirmation of intermittent coating state>
Judgment of whether or not the intermittent coating state is possible was performed as follows. The state where the intermittent coating is “possible” (indicated by “◯” in Table 1) represents a state where there is no adhesion of the coating liquid to the intermittently coated portion, that is, the uncoated portion. On the other hand, the state where intermittent coating is “impossible” (indicated by x in Table 1) represents a case where the coating liquid adheres to the uncoated portion.
<Peeling of electrode plate during rolling>
About peeling at the time of rolling, when peeling occurs when the part of the coating part adheres to the rolling roll side, it is judged as “Yes” (indicated by × in Table 1), and peeling occurs. If not, it was determined as “None” (indicated by a circle in Table 1).
<Comprehensive evaluation>
In the comprehensive evaluation determination, when the intermittent coating state was acceptable and peeling did not occur during rolling, it was determined as OK in Table 1 and “X” otherwise.
About Examples 1-13 and Comparative Examples 1-5, the stroke length, the conditions of the opening and closing timing of the two-way valve valve 2, the start-end bulge amount, the intermittent coating state, the peeling of the electrode plate during rolling, and the overall evaluation are summarized. Table 1 shows.

(表1)の結果から、サックバックシリンダ6のストローク長、二方弁バルブ2の開閉タイミングの調整により、始端盛り上がり量を制御することができ、比較例のように圧延時に始端の盛り上がり部が高密度となり圧延ロールに取られてしまう剥がれを防止することがが可能となる。それぞれの実施例と比較例についいては、以下のような考察が可能である。   From the results of (Table 1), by adjusting the stroke length of the suck back cylinder 6 and the opening / closing timing of the two-way valve 2, it is possible to control the amount of rising of the starting end. It becomes possible to prevent peeling which becomes high density and is taken by the rolling roll. Each example and comparative example can be considered as follows.

実施例1〜7と比較例1の結果から、サックバックシリンダ6のストローク長をある値以上のストローク長、すなわち実施例記載の値とすることで、始端盛り上がり量を押さえることができる。サックバック量が増えるに従い盛り上がり量が増えていく減少については、サックバックシリンダが戻る際の若干の塗工液逆流が影響していると推測している。   From the results of Examples 1 to 7 and Comparative Example 1, by setting the stroke length of the suck back cylinder 6 to a stroke length greater than a certain value, that is, the value described in the example, the starting end swell amount can be suppressed. Regarding the decrease in which the amount of swelling increases as the amount of suck back increases, it is assumed that a slight backflow of coating liquid when the suck back cylinder returns returns.

実施例8〜12と比較例2の結果から、二方弁2の開閉タイミングを実施例8〜12のように設定することで、サックバックシリンダ6のストローク長によらず、サックバック
シリンダの動作が行なわれていれば、始端盛り上がり量をマイナス値に抑えることができた。実施例8〜12に記載した開閉タイミングは、実施例1〜7で見られた塗工液逆流と推測する影響を排除するように設定している。
From the results of Examples 8 to 12 and Comparative Example 2, the opening / closing timing of the two-way valve 2 is set as in Examples 8 to 12, so that the operation of the suck back cylinder does not depend on the stroke length of the suck back cylinder 6. If this is done, the amount of rise at the starting edge could be suppressed to a negative value. The opening / closing timings described in Examples 8 to 12 are set so as to exclude the influence of the coating liquid backflow observed in Examples 1 to 7.

実施例13の結果から、逆止弁7を追加することで、逆流に対して効果が発揮された。   From the result of Example 13, the effect on the reverse flow was exhibited by adding the check valve 7.

(表2)の結果から、比較例3にように三方弁バルブの切替タイミングにより盛り上がり量が変わることは無く、圧延時に剥がれが発生した。比較例4のように、圧延時に剥がれが発生し、さらに、同一塗工面内の塗工量ばらつきが発生した。比較例5のように、圧延時に剥がれが発生し、さらに、間欠が不安定であった。   From the result of (Table 2), the amount of swell did not change according to the switching timing of the three-way valve valve as in Comparative Example 3, and peeling occurred during rolling. As in Comparative Example 4, peeling occurred during rolling, and coating amount variation within the same coating surface occurred. As in Comparative Example 5, peeling occurred during rolling, and the intermittentness was unstable.

本発明にかかる間欠塗工装置は、始端開始部の塗工量を制御することができ、具体的には、極板用塗工液を塗工する際、塗工始端部の塗工重量を意図的に少なくすることで塗工形状を制御し、塗工始端部の凸部(盛り上がり)を無くすことで、圧延ロールからの負荷を軽減させ、圧延時に発生するダメージ(剥がれ)を防止することにおいて、非常に有用である。   The intermittent coating apparatus according to the present invention can control the coating amount at the start end portion. Specifically, when coating the electrode plate coating solution, the coating weight at the coating start end portion is set. By controlling the coating shape by reducing it intentionally and eliminating the convex part (swelling) at the coating start end, it reduces the load from the rolling roll and prevents damage (peeling) that occurs during rolling. Is very useful.

本発明の実施の形態における間欠時の配管概略図Piping schematic diagram during intermittent operation in an embodiment of the present invention 本発明の実施の形態における塗工時の配管概略図Piping schematic diagram at the time of coating in the embodiment of the present invention 本発明の実施の形態における逆止弁を追加した配管概略図Schematic diagram of piping to which a check valve is added in an embodiment of the present invention 本発明の実施の形態における塗工物の概略断面図Schematic sectional view of a coated product in an embodiment of the present invention 比較例3記載の配管概略図Piping schematic diagram of comparative example 3 比較例4記載の配管概略図Piping schematic diagram described in Comparative Example 4 比較例5記載の配管概略図Piping schematic diagram of comparative example 5

符号の説明Explanation of symbols

1 ダイヘッド
2 二方弁バルブ
3 三方弁バルブ
4 逆止弁
5 送液ポンプ
6 サックバックシリンダ
7 逆止弁
8 乾燥済み塗工物
9 導電性基材
DESCRIPTION OF SYMBOLS 1 Die head 2 Two-way valve valve 3 Three-way valve valve 4 Check valve 5 Liquid feed pump 6 Suck back cylinder 7 Check valve 8 Dried coating 9 Conductive base material

Claims (10)

基材を連続走行させるロールと、前記基材上に塗工液を塗工するダイヘッドと、ノズルに前記塗工液を間欠供給する間欠手段と、前記塗工液が前記間欠塗工装置に循環される循環配管と、および前記塗工液を排出する排出配管を有する間欠塗工装置において、前記循環配管内にサックバックシリンダを有し、前記間欠手段は、非塗工部において、塗工に使用されない塗工液を前記サックバックシリンダで取り除き、前記ダイヘッドおよび循環系の外部へ排出し、前記サックバックシリンダにより前記ダイヘッド内部の圧力を制御できる間欠塗工装置。 A roll for continuously running the base material, a die head for coating the base material with the coating liquid, intermittent means for intermittently supplying the coating liquid to the nozzle, and the coating liquid circulating to the intermittent coating device In the intermittent coating apparatus having a circulation pipe and a discharge pipe for discharging the coating liquid, the circulation pipe has a suck back cylinder, and the intermittent means is used for coating in the non-coating portion. An intermittent coating apparatus capable of removing coating liquid that is not used by the suck back cylinder, discharging it to the outside of the die head and the circulation system, and controlling the pressure inside the die head by the suck back cylinder. 前記サックバックシリンダは逆止弁と二方弁バルブを有する請求項1記載の間欠塗工装置。 The intermittent coating apparatus according to claim 1, wherein the suck back cylinder has a check valve and a two-way valve valve. 前記サックバックシリンダのシリンダストローク長が可変である請求項1記載の間欠塗工装置。 The intermittent coating apparatus according to claim 1, wherein a cylinder stroke length of the suck back cylinder is variable. 前記塗工液を、非塗工時は前記排出配管へ、塗工時は前記循環配管へ切り替える手段として、三方弁バルブを用いた請求項1記載の間欠塗工装置。 The intermittent coating apparatus according to claim 1, wherein a three-way valve valve is used as means for switching the coating liquid to the discharge pipe when not coating and to the circulation pipe when coating. 前記循環配管は、サックバックシリンダ、二方弁バルブ、逆止弁、および三方弁バルブを有する請求項1記載の間欠塗工装置。 The intermittent coating apparatus according to claim 1, wherein the circulation pipe includes a suck back cylinder, a two-way valve valve, a check valve, and a three-way valve valve. 塗工始端部の塗工重量制御が、前記サックバックのシリンダストローク長、サックバックシリンダ動作タイミングと二方弁バルブの開閉タイミング、および逆止弁の圧力の内少なくとも1つの操作と、三方弁バルブの開閉タイミングの組み合わせにより前記塗工重量が制御される請求項1記載の間欠塗工装置。 The coating weight control at the coating start end includes the operation of at least one of the suck back cylinder stroke length, the suck back cylinder operation timing, the two-way valve opening / closing timing, and the check valve pressure, and the three-way valve valve. The intermittent coating apparatus according to claim 1, wherein the coating weight is controlled by a combination of opening and closing timings. 前記二方弁バルブと前記サックバックシリンダの間に逆止弁を少なくとも一つ設けた循環配管とした請求項2記載の間欠塗工装置。 The intermittent coating apparatus according to claim 2, wherein a circulation pipe is provided in which at least one check valve is provided between the two-way valve valve and the suck back cylinder. 前記サックバックシリンダ、前記二方弁バルブ、および前記三方弁バルブの動作と開閉タイミングの制御を少なくとも2系統設けた請求項1記載の間欠塗工装置。 The intermittent coating apparatus according to claim 1, wherein at least two systems are provided for controlling the operation and opening / closing timing of the suck back cylinder, the two-way valve valve, and the three-way valve valve. 請求項1〜8記載の間欠塗工装置を用い、前記塗工始端部の厚みの平均値Aが、前記塗工始端部以外の厚みの平均値Bに対して、A−B≦15μmである電池用極板の製造方法。 The intermittent coating apparatus according to claim 1, wherein the average value A of the coating start end portion is A−B ≦ 15 μm with respect to the average value B of the thickness other than the coating start end portion. Manufacturing method of battery electrode plate. 請求項9記載の電池用極板の製造方法を用い、前記電池用極板を有する電池。

The battery which has the said electrode plate for batteries using the manufacturing method of the electrode plate for batteries of Claim 9.

JP2006078405A 2006-03-22 2006-03-22 Intermittent coating apparatus, production coating method of electrode plate for electric batteries using the apparatus, and electric battery having electrode plate for electric batteries Withdrawn JP2007253013A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2006078405A JP2007253013A (en) 2006-03-22 2006-03-22 Intermittent coating apparatus, production coating method of electrode plate for electric batteries using the apparatus, and electric battery having electrode plate for electric batteries

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2006078405A JP2007253013A (en) 2006-03-22 2006-03-22 Intermittent coating apparatus, production coating method of electrode plate for electric batteries using the apparatus, and electric battery having electrode plate for electric batteries

Publications (1)

Publication Number Publication Date
JP2007253013A true JP2007253013A (en) 2007-10-04

Family

ID=38627780

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2006078405A Withdrawn JP2007253013A (en) 2006-03-22 2006-03-22 Intermittent coating apparatus, production coating method of electrode plate for electric batteries using the apparatus, and electric battery having electrode plate for electric batteries

Country Status (1)

Country Link
JP (1) JP2007253013A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013052322A (en) * 2011-09-01 2013-03-21 Techno Smart Corp Intermittently coating method and intermittently coating facility
EP2886200A1 (en) * 2013-12-18 2015-06-24 Nordson Corporation Device and method for intermittently applying a liquid material, in particular foamed adhesive onto a substrate
US20160293933A1 (en) * 2011-09-13 2016-10-06 VW-VM Forschungsgesellschaft mbH & Co. KG Intermittent coating of moving surfaces
JP2019063780A (en) * 2017-10-05 2019-04-25 トヨタ自動車株式会社 Intermittent coating device
JP2020053253A (en) * 2018-09-27 2020-04-02 タイコエレクトロニクスジャパン合同会社 Connector seal structure and manufacturing method of the same
CN111822244A (en) * 2020-07-02 2020-10-27 庞晓冉 Full-automatic feeding device for lithium battery electrode plate coating

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013052322A (en) * 2011-09-01 2013-03-21 Techno Smart Corp Intermittently coating method and intermittently coating facility
US20160293933A1 (en) * 2011-09-13 2016-10-06 VW-VM Forschungsgesellschaft mbH & Co. KG Intermittent coating of moving surfaces
US9876218B2 (en) * 2011-09-13 2018-01-23 VW-VM Forschungsgesellschaft mbH & Co. KG Intermittent coating of moving surfaces
EP2886200A1 (en) * 2013-12-18 2015-06-24 Nordson Corporation Device and method for intermittently applying a liquid material, in particular foamed adhesive onto a substrate
JP2019063780A (en) * 2017-10-05 2019-04-25 トヨタ自動車株式会社 Intermittent coating device
JP2020053253A (en) * 2018-09-27 2020-04-02 タイコエレクトロニクスジャパン合同会社 Connector seal structure and manufacturing method of the same
CN111822244A (en) * 2020-07-02 2020-10-27 庞晓冉 Full-automatic feeding device for lithium battery electrode plate coating

Similar Documents

Publication Publication Date Title
JP2007253013A (en) Intermittent coating apparatus, production coating method of electrode plate for electric batteries using the apparatus, and electric battery having electrode plate for electric batteries
JP2010108678A (en) Electrode plate for nonaqueous secondary battery, and method and device for manufacturing the same
JP4593114B2 (en) Positive electrode film for alkali metal polymer battery and method for producing the same
EP2415530B1 (en) Vacuum chamber system of coating apparatus and coating method using the same
WO2015033535A1 (en) Fluid application system and fluid application method
JP2013069645A (en) Coating device and coating method of electrode member of secondary battery
JP2019130491A (en) Coating method and coating device
JP7252364B2 (en) Electrode slurry coating apparatus and method including pressure control member
JP2013071044A (en) Coating apparatus and coating method
JP5747459B2 (en) Intermittent coating device
JP2010232073A (en) Method of manufacturing electrode for nonaqueous electrolyte secondary battery
JP2018167193A (en) Double-sided coating apparatus and coating film formation system
JP2010033791A (en) Electrode plate for nonaqueous secondary battery, method and device for manufacturing the same, and nonaqueous secondary battery using electrode plate
JP2012179540A (en) Coating apparatus and coating film formation system
JP2015149264A (en) Method and device for manufacturing electrode
JP2014188449A (en) Intermittent coating apparatus and intermittent coating method
CN210585671U (en) Double-side coating device
JP2013052325A (en) Coating method and coating apparatus of coating material
JP2017047393A (en) Coating device and electrode manufactured by the same
JP2006051407A (en) Valve for coating intermittent feeding, three-way valve for coating intermittent feeding, intermittent coater, program and recording medium
CN116419803A (en) Slurry circulation system for electrode coating capable of circulating slurry when production line stop occurs and slurry circulation method for electrode coating using the same
JP2011139998A (en) Thin film coating device and double-sided thin film coating device
JP4575103B2 (en) Electrode plate manufacturing method and manufacturing apparatus
KR102187404B1 (en) Processing apparatus, spray processing method, and method for manufacturing electrode material
JP2017054762A (en) Electrode for secondary battery, manufacturing method of secondary battery, and manufacturing method of electrode for secondary battery

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20081216

RD01 Notification of change of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7421

Effective date: 20091127

A761 Written withdrawal of application

Free format text: JAPANESE INTERMEDIATE CODE: A761

Effective date: 20101221

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20101224