JP2832457B2 - Double-sided simultaneous coating device - Google Patents
Double-sided simultaneous coating deviceInfo
- Publication number
- JP2832457B2 JP2832457B2 JP20901289A JP20901289A JP2832457B2 JP 2832457 B2 JP2832457 B2 JP 2832457B2 JP 20901289 A JP20901289 A JP 20901289A JP 20901289 A JP20901289 A JP 20901289A JP 2832457 B2 JP2832457 B2 JP 2832457B2
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- JP
- Japan
- Prior art keywords
- coating
- coating liquid
- die
- transport path
- dies
- 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.)
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Description
本発明は、プラスチックフイルム，布，金属板又は紙
等の帯状基材の両面に、塗工液を同時塗工するための両
面同時塗工装置に関する。The present invention relates to a double-sided simultaneous coating apparatus for simultaneously coating a coating liquid on both sides of a band-shaped substrate such as a plastic film, cloth, a metal plate, or paper.
従来、両面同時塗工装置は、第８図に示す如く、基材
用搬送路Ｒが浸漬する液溜部1aを設けた塗工液溜具１
と、液溜部1aより基材搬出側に配置したスクイズロール
２とを備え、液溜部1aを通過する帯状基材Ａの両面に塗
工液Ｈを付着させ、スクイズロール２を通過する際に塗
工膜厚みを規制するものである。Conventionally, as shown in FIG. 8, a double-sided simultaneous coating apparatus has a coating liquid reservoir 1 provided with a liquid reservoir 1a in which a substrate transport path R is immersed.
And a squeeze roll 2 disposed on the substrate discharge side from the liquid reservoir 1a. When the coating liquid H is applied to both sides of the strip-shaped substrate A passing through the liquid reservoir 1a, The thickness of the coating film is regulated.
従来の両面同時塗工装置は、低粘度の塗工液には適し
ているが、高粘度の塗工液には不適である。何故なら
ば、高粘度の塗工液の流動性が非常に悪いため、溜液部
1aに基材Ａを浸漬することが非常に困難であり、仮に浸
漬することができたとしても、多量に付着した塗工液の
膜厚みをスクイズロール２で規制すること及び平滑な塗
工膜表面を得ることが非常に難しいからである。 本発明は、従来不可能とされていた高粘度な塗工液の
両面同時塗工をも可能にする両面同時塗工装置の提供を
目的とする。The conventional double-sided simultaneous coating apparatus is suitable for a low-viscosity coating liquid, but is not suitable for a high-viscosity coating liquid. Because the fluidity of the high-viscosity coating solution is very poor,
It is very difficult to immerse the base material A in 1a, and even if it can be immersed, it is necessary to regulate the film thickness of the coating liquid that has adhered in a large amount with the squeeze roll 2 and to achieve a smooth coating film. This is because it is very difficult to obtain a surface. SUMMARY OF THE INVENTION An object of the present invention is to provide a double-sided simultaneous coating apparatus capable of simultaneously coating both sides of a high-viscosity coating liquid, which has been impossible in the past.
本発明に係る両面同時塗工装置（以下、「本発明装
置」という）が採用した手段は、基材用搬送路の外側に
該搬送路を介して対峙する二つのダイを配設し、各ダイ
は、搬送路を横断する方向に沿って延設した塗工液押出
スリットと、塗工液押出スリットより基材搬出側に位置
する搬送路の局部と対面し且つこの局部との間で塗工液
溜空間を形成するリップ面とを備え、両ダイのリップ面
を上記搬送路を介して対向させ、前記二つのダイの一方
のダイを固定し、他方のダイを前記搬送路に向かって離
接移動自在に配置し且つ搬送路に向かって押圧手段で押
圧したことである。 なお、他方のダイを所定位置に停止させるためのスト
ッパーを備え、ストッパーは、他方のダイを搬送路に接
近した位置で一時停止させる前進待機位置から他方のダ
イのリップ面を搬送路に当接させることが可能な塗工位
置までの間で進退させるようにすることもある。Means adopted by the double-sided simultaneous coating apparatus according to the present invention (hereinafter, referred to as “the present invention apparatus”) is to dispose two dies facing each other via the transport path outside the substrate transport path. The die has a coating liquid extruding slit extending along a direction transverse to the conveying path, and a local part of the conveying path located on the substrate discharge side of the coating liquid extruding slit and facing and between this local part. And a lip surface forming a working liquid storage space, the lip surfaces of both dies are opposed to each other via the transfer path, one of the two dies is fixed, and the other die is moved toward the transfer path. That is, they are arranged so as to be able to move away from each other, and are pressed toward the transport path by pressing means. In addition, a stopper for stopping the other die at a predetermined position is provided. The stopper abuts the lip surface of the other die on the transfer path from a forward standby position where the other die is temporarily stopped at a position close to the transfer path. In some cases, it is made to move back and forth until the coating position where it can be applied.
本発明装置の作用を図面に示す実施例に基づいて説明
する。 第７図に示す如く、基材用搬送路Ｒを一定搬送速度で
通過する帯状基材Ａに向かってダイ11,12の各塗工液押
出スリット13,14から定量的に押出された高粘度（例え
ば、30〜100,000cps）の塗工液B1,B2は、基材Ａに導か
れて、基材Ａとリップ面15,16との間に形成された塗工
液溜空間S1,S2に至り、一定厚みの塗工液溜B1-1,B2-1を
形成する。塗工液溜空間S1,S2の塗工液溜B1-1,B2-1は、
上記塗工液B1,B2の連続的な供給を受けて内圧が上昇
し、基材Ａの表面局部Aa-1,Aa-2を両側から釣合う内圧
で押圧する。押圧された基材Ａは、リップ面15,16の中
間所定位置を通過して、リップ面15,16の出口縁部15a,1
6aと基材表面Aa,Aaとの間に塗工膜形成間隙E1,E2を形成
し、この間隙寸法W1-1,W1-2を一定値に維持する。上記
塗工液溜B1-1,B2-1で内圧の上昇した塗工液B1,B2は、基
材表面局部Aa-1,Aa-2に塗着した状態で、一定間隙寸法W
1-1,W1-2の塗工膜形成間隙E1,E2を通過して、基材Ａの
両表面Aa,Aaに一定膜厚W2-1,W2-2の塗工膜B1-2,B2-2を
形成する。 基材Ａの厚薄により基材Ａとリップ面15,16との間に
形成される塗工液溜空間S1,S2が変動する場合には、第
６図（Ｂ）に示す如く、一方のダイ11を所定塗工位置に
固定し、他方のダイ12を搬送路Ｒに向かって離接移動自
在に配置し且つ搬送路Ｒに向かって押圧手段55で押圧す
ることにより均一塗工膜厚みの両面同時塗工ができる。
即ち、基材Ａが薄くなると、第７図に示す如く、塗工液
溜空間S1,S2を厚くして塗工液溜B1-1,B2-1の内圧を低下
させる傾向を示すが、押圧手段55の一定押圧力を受けて
いるダイ12は、塗工液溜空間S1,S2を薄くする方向で且
つリップ面15,16の押圧力と塗工液溜B1-1,B2-1とが釣合
う位置まで前進する。逆に、基材Ａが厚くなると、塗工
液溜空間S1,S2を薄くして塗工液溜B1-1,B2-1の内圧を上
昇させる傾向を示すが、押圧手段55の一定押圧力を受け
ているダイ12は、塗工液溜空間S1,S2を厚くする方向で
且つリップ面15,16の押圧力と塗工液溜B1-1,B2-1とが釣
合う位置まで後退する。その結果、押圧手段55で押圧さ
れた離接移動自在のダイ12は、塗工液溜空間S1,S2の厚
み及び塗工膜形成間隙E1,E2の間隙寸法W1-1,W1-2を一定
値とし、基材Ａの両表面Aa,Aaに一定膜厚W2-1,W2-2の塗
工膜B1-2,B2-2を常に形成する。The operation of the device of the present invention will be described based on an embodiment shown in the drawings. As shown in FIG. 7, the high viscosity quantitatively extruded from the coating liquid extrusion slits 13 and 14 of the dies 11 and 12 toward the belt-shaped substrate A passing at a constant transport speed through the substrate transport path R. The coating liquids B 1 and B 2 (for example, 30 to 100,000 cps) are guided to the base material A, and the coating liquid storage space S 1 formed between the base material A and the lip surfaces 15 and 16. leads to S 2, to form a constant thickness of the coating solution reservoir B 1 -1, B 2 -1. The coating liquid reservoirs B 1 -1, B 2 -1 of the coating liquid storage spaces S 1 , S 2 are:
The internal pressure rises due to the continuous supply of the coating liquids B 1 and B 2 , and presses the surface local portions Aa-1 and Aa-2 of the base material A from both sides with a balanced internal pressure. The pressed base material A passes through a predetermined position between the lip surfaces 15 and 16 and exits 15 a and 1 of the lip surfaces 15 and 16.
Coating film forming gaps E 1 , E 2 are formed between 6a and the substrate surfaces Aa, Aa, and the gap dimensions W 1 -1, W 1 -2 are maintained at constant values. The coating liquid reservoir B 1 -1, B 2 -1 coating solution B 1 to increase the internal pressure in, B 2 is in a state of being coated on the substrate surface local Aa-1, Aa-2, a constant gap dimension W
A coating film having a constant film thickness W 2 -1, W 2 -2 passes through the coating film formation gaps E 1 , E 2 of 1 -1, W 1 -2 and is applied to both surfaces Aa, Aa of the substrate A. Form B 1 -2 and B 2 -2. In the case where the coating liquid storage spaces S 1 and S 2 formed between the base material A and the lip surfaces 15 and 16 fluctuate due to the thickness of the base material A, as shown in FIG. Is fixed at a predetermined coating position, and the other die 12 is disposed so as to be able to move toward and away from the conveying path R, and is pressed toward the conveying path R by a pressing means 55 to thereby obtain a uniform coating film thickness. Can be coated on both sides simultaneously.
That is, when the base material A becomes thinner, as shown in FIG. 7, the coating liquid storage spaces S 1 and S 2 become thicker and the internal pressure of the coating liquid storages B 1 -1 and B 2 -1 tends to decrease. As shown in the drawing, the die 12 receiving the constant pressing force of the pressing means 55 is in the direction of thinning the coating liquid storage spaces S 1 and S 2 and the pressing force of the lip surfaces 15 and 16 and the coating liquid storage B 1-. Move forward to the position where 1, B 2 -1 is balanced. Conversely, when the base material A becomes thicker, the coating liquid storage spaces S 1 and S 2 tend to be thinned to increase the internal pressure of the coating liquid storages B 1 -1 and B 2 -1. The die 12 receiving the constant pressing force is applied in the direction in which the coating liquid storage spaces S 1 and S 2 are thickened, and the pressing force of the lip surfaces 15 and 16 and the coating liquid storage B 1 -1, B 2 -1 Retreat to a position where is balanced. As a result, the die 12 that can be separated and moved freely by the pressing means 55 has a thickness of the coating liquid storage spaces S 1 and S 2 and a gap dimension W 1 −1 of the coating film formation gaps E 1 and E 2 . the W 1 -2 with a constant value, both surfaces Aa of the substrate a, constant Aa thickness W 2 -1, the coating film B 1 -2 of W 2 -2, always form a B 2 -2.
（第１実施例） 第１図乃至第４図は、第１実施例の両面同時塗工装置
10を示すものである。 本塗工装置10は、第１図に示す如く、基材用搬送路Ｒ
の外側適所に、該搬送路Ｒを介して対峙する二つのダイ
11,12を配設してある。該搬送路Ｒは、ガイドロール45
とフローテイング乾燥装置46等との間に、垂直状態、水
平状態（図示は省略）又は傾斜状態に形成したものであ
る。搬送方向（矢符Ｃ方向）に高張力を負荷できない帯
状基材Ａ（例えば、布等）の場合には、搬送路Ｒの両縁
外側に、基材Ａの耳端部を把持するクリップ付きチエー
ン（図示は省略）を配設する。 各ダイ11（12）は、搬送路Ｒを横断する方向に沿って
延設した塗工液押出スリット13（14）と、第２図に示す
如く、塗工液押出スリット13（14）より基材搬出側に位
置する搬送路Ｒの局部Raと対面し且つこの局部Raとの間
で塗工液溜空間S1（S2）を形成するリップ面15（16）と
を備えている。両ダイ11,12は、搬送路Ｒを介してリッ
プ面15,16が対向するように配置してある。ダイ11（1
2）は、第３図の正面図及び第４図の左側断面図に示す
如く、案内具18（19）で搬送路Ｒに向かって離接移動自
在に支持してある。案内具18及び19の夫々は、左右の固
定側フレーム20,21の内側に配設した案内レール22,23
と、案内レール22,23に円滑に案内されて搬送路Ｒに向
かって進退するものであつてダイ11又は12を支持固定す
る移動フレーム24と、移動フレーム24に出力端26a,26a
を接続して移動フレーム24を進退駆動する左右のエアー
シリンダー26,26等からなる駆動手段25と、移動フレー
ム24を所定塗工位置で停止して対向する両ダイ11,12の
リップ面15,16の間隔を調節する左右のストッパー27,27
とからなる。 前記ダイ11（12）は、第１図及び第２図に示す如く、
二つ割りのボディー28,29（30,31）と、ボディー28,29
（30,31）の先端に取着したリップ32,33（34,35）とか
らなり、リップ32,33（34,35）の間に塗工液押出スリッ
ト13（14）を形成し、ボディー28,29（30,31）の間に、
塗工液Ｂを塗工液押出スリット13（14）のスリット長手
方向（即ち、基材用搬送路Ｒの横断方向）に均一分散さ
せるためのマニホールド38（39）を形成し、ボディー28
（30）に塗工液供給孔（図示は省略）を穿設してある。
ダイ11（12）は、塗工液供給装置（図示は省略）から塗
工液供給孔に塗工液B1（B2）が供給されると、塗工液B1
（B2）をマニホールド38（39）で長手方向へ均一に分散
して塗工液押出スリット13（14）に導き、帯状用搬送路
Ｒを通過する基材Ａに向かって塗工液B1（B2）を押出
す。第２図に示す如く、基材Ａの表面局部Aa-1（Aa-2）
に押出された塗工液B1（B2）は、矢符Ｃ方向に一定速度
で搬送中の基材Ａに同伴されて楔状の塗工液溜空間S
1（S2）に導かれ、一定厚みの塗工液溜B1-1（B2-1）を
形成する。この塗工液溜B1-1（B2-1）の塗工液B1（B2）
は、上記塗工液B1（B2）の連続的な供給により内圧が上
昇し、基材表面局部Aa-1（Aa-2）に塗着した状態で、一
定間隙寸法W1-1（W1-2）の塗工膜形成間隙E1（E2）を通
過して、基材Ａの両面に一定膜厚W2-1,W2-2の塗工膜B1-
2（B2-2）を形成する。なお、チキソトロピー特性を有
する塗工液B1（B2）にあつては、塗工液溜空間E1（E2）
で受ける適切な剪断力により粘度が瞬時に低下し、基材
表面Aa（Aa）に対して円滑に塗工される。 なお、本塗工装置10は、高粘度の塗工液B1（B2）の両
面同時塗工は勿論のこと、低粘度の塗工液の両面同時塗
工も可能である。 （第２実施例） 第５図乃至第７図は、第２実施例の両面同時塗工装置
50を示すものである。 本塗工装置50の特徴とする所は、帯状基材搬送方向
（矢符Ｃ方向）に沿って厚薄のある帯状基材Ａの両表面
Aa,Aaに対して均一塗工膜厚みの塗工ができるように、
二つのダイ11,12の一方のダイ11を所定塗工位置に固定
し、他方のダイ12を基材用搬送路Ｒに向かって離接移動
自在に配置し且つダイ12を押圧手段55で搬送路Ｒに向か
って押圧した点である。 本塗工装置50が前記第１実施例の本塗工装置10と大き
く異なる点は、ダイ12を案内する案内具19に設けた左右
のストッパー57,57と押圧手段55である。各ストッパー5
7は、移動フレーム24に当接するストッパー先端57aを進
退自在としてある。ストッパー先端57aの進退領域は、
ダイ12を搬送路Ｒに接近した位置で一時停止させる前進
待機位置（第６図（Ａ）参照）からダイ12のリップ35
（第７図参照）を搬送路Ｒに当接することが可能な塗工
位置（同図（Ｂ）参照）までとしてある。上記押圧手段
55は、基材用搬送路Ｒに向かって移動する左右の各出力
端56aを移動フレーム24に接続した左右一組のエアーシ
リンダー56,56からなる。左右のエアーシリンダー56,56
に圧縮空気を供給する空気配管系統（図示は省略）は、
ダイ12を後退待機位置（第５図参照）からリップ35（第
７図参照）の先端が搬送路Ｒに接近する前進待機位置
（第６図（Ａ）参照）まで前進させる圧縮空気を供給し
た後、上記ストッパー先端57aが塗工位置（同図（Ｂ）
参照）に向かって後退を開始する信号を受けて、各エア
ーシリンダー56に所望圧力の圧縮空気を供給して各出力
端56aからP2/2の押圧力をダイ12に伝達させ、更に塗工
終了のときにダイ12を上記後退待機位置（第５図参照）
まで強制後退させる圧縮空気を供給するようにしてあ
る。 エアーシリンダー56,56の出力の合力P2は、第７図に
示す如く、楔状の塗工液溜空間S2に形成された塗工液溜
B2-1の塗工液B2がダイ12のリップ面16を押圧する押圧力
の合力P1と釣合う。もし、基材Ａに厚薄があつた場合に
は、ダイ12は、基材Ａの厚薄に追従して移動する。追従
する理由は、ダイ12が基材用搬送路Ｒに向かって離接移
動自在に配置され且つダイ12の離接移動方向に沿って移
動する押圧手段55の出力端56a,56aでダイ12を基材用搬
送路Ｒに向かって押圧し、前記押圧力P1及びP2を釣合わ
せているからである。ダイ12が追従するため、ダイ12
（11）のリップ面16（15）の出口縁部16a（15a）と基材
表面Aa（Aa）との間に形成された塗工膜形成間隙E
2（E1）の間隙寸法W1-2（W1-1）は一定値に維持される
ことになり、基材Ａの表面Aa（Aa）に一定膜厚W2-1（W2
-2）の塗工膜B1-2（B2-2）を常に形成する。(First Embodiment) FIGS. 1 to 4 show a double-sided simultaneous coating apparatus according to a first embodiment.
10 is shown. As shown in FIG. 1, the present coating apparatus 10 includes a substrate transport path R
Two dies facing each other via the conveyance path R
11,12 are arranged. The transport path R is provided with a guide roll 45
It is formed in a vertical state, a horizontal state (not shown), or an inclined state between the floating drying device 46 and the like. In the case of a belt-shaped substrate A (for example, cloth) to which high tension cannot be applied in the transport direction (the direction of arrow C), a clip for gripping the edge end of the substrate A is provided on both outer sides of the transport path R. A chain (not shown) is provided. Each die 11 (12) is provided with a coating liquid extrusion slit 13 (14) extending along the direction crossing the transport path R and a coating liquid extrusion slit 13 (14) as shown in FIG. A lip surface 15 (16) facing the local part Ra of the transport path R located on the material discharge side and forming a coating liquid storage space S 1 (S 2 ) with the local part Ra is provided. The dies 11 and 12 are arranged such that the lip surfaces 15 and 16 are opposed to each other via the transport path R. Die 11 (1
2) is supported by a guide 18 (19) so as to be movable toward and away from the transport path R as shown in the front view of FIG. 3 and the left sectional view of FIG. Each of the guides 18 and 19 is provided with a guide rail 22, 23 disposed inside the left and right fixed side frames 20, 21.
And a moving frame 24 smoothly guided by the guide rails 22 and 23 toward the conveying path R and supporting and fixing the die 11 or 12, and output ends 26a and 26a on the moving frame 24.
And a driving means 25 comprising left and right air cylinders 26, 26 and the like for driving the moving frame 24 forward and backward, and the lip surfaces 15, 12 of the opposite dies 11, 12, stopping the moving frame 24 at a predetermined coating position. Left and right stoppers 27, 27 to adjust the spacing of 16
Consists of The die 11 (12) is, as shown in FIGS. 1 and 2,
Split body 28,29 (30,31) and body 28,29
The lip 32,33 (34,35) attached to the tip of (30,31). The coating liquid extrusion slit 13 (14) is formed between the lips 32,33 (34,35). Between 28 and 29 (30 and 31)
A manifold 38 (39) for uniformly dispersing the coating liquid B in the longitudinal direction of the coating liquid extruding slits 13 (14) (that is, in the transverse direction of the substrate transport path R) is formed, and the body 28 is formed.
(30) is provided with a coating liquid supply hole (not shown).
Die 11 (12), when the coating liquid supply apparatus coating liquid from (not illustrated) in the coating liquid supply hole B 1 (B 2) is supplied, the coating liquid B 1
(B 2 ) is uniformly dispersed in the longitudinal direction by the manifold 38 (39) and guided to the coating liquid extrusion slit 13 (14), and the coating liquid B 1 is directed toward the base material A passing through the belt-shaped conveyance path R. extruding the (B 2). As shown in FIG. 2, the surface local part Aa-1 (Aa-2) of the base material A
The coating liquid B 1 (B 2 ) extruded at a constant speed in the direction of arrow C accompanies the base material A being conveyed and has a wedge-shaped coating liquid storage space S.
1 is guided to the (S 2), to form a constant thickness of the coating solution reservoir B 1 -1 (B 2 -1) . Coating solution B 1 of the coating solution reservoir B 1 -1 (B 2 -1) (B 2)
In the state where the internal pressure increases due to the continuous supply of the coating liquid B 1 (B 2 ) and the coating liquid B 1 (B 2 ) is applied to the local surface Aa-1 (Aa-2), a constant gap dimension W 1 -1 ( W 1 -2) passes through the coating film forming gap E 1 (E 2 ), and on both surfaces of the substrate A, the coating film B 1- having a constant thickness W 2 -1, W 2 -2
2 (B 2 -2). For the coating liquid B 1 (B 2 ) having thixotropic properties, the coating liquid storage space E 1 (E 2 )
The viscosity is instantaneously reduced due to the appropriate shearing force received at step (a), and the coating is smoothly applied to the substrate surface Aa (Aa). In addition, the present coating apparatus 10 is capable of simultaneously coating both sides of a high-viscosity coating liquid B 1 (B 2 ) and a low-viscosity coating liquid. (Second Embodiment) FIGS. 5 to 7 show a double-sided simultaneous coating apparatus according to a second embodiment.
50 is shown. The feature of the present coating apparatus 50 is that both surfaces of the strip-shaped base material A having a thickness along the conveyance direction of the strip-shaped base material (direction of arrow C).
Aa, Aa to be able to apply a uniform coating film thickness,
One die 11 of the two dies 11 and 12 is fixed at a predetermined coating position, the other die 12 is disposed so as to be able to move toward and away from the base material transfer path R, and the die 12 is transferred by the pressing means 55. This is a point pressed toward the road R. The main difference between the main coating apparatus 50 and the main coating apparatus 10 of the first embodiment is the right and left stoppers 57 and 57 and the pressing means 55 provided on the guide 19 for guiding the die 12. Each stopper 5
7, the stopper tip 57a that comes into contact with the moving frame 24 is movable forward and backward. The advance / retreat area of the stopper tip 57a is
The lip 35 of the die 12 is moved from a forward standby position (see FIG. 6A) where the die 12 is temporarily stopped at a position close to the transport path R.
(See FIG. 7) up to the coating position (see FIG. 7 (B)) where it can abut the transport path R. The pressing means
Reference numeral 55 denotes a pair of left and right air cylinders 56 connected to the moving frame 24 at left and right output ends 56a moving toward the base material transport path R. Left and right air cylinders 56, 56
The air piping system (not shown) that supplies compressed air to
Compressed air was supplied to advance the die 12 from the retreat standby position (see FIG. 5) to a forward standby position (see FIG. 6 (A)) where the tip of the lip 35 (see FIG. 7) approaches the transport path R. Then, the stopper tip 57a is positioned at the coating position ((B) in FIG.
Receiving a signal for starting the retreat toward the reference), the pressing force of P 2/2 is transmitted to the die 12 by supplying compressed air of a desired pressure in the air cylinder 56 from the output terminals 56a, further coating At the end of the operation, the die 12 is moved to the retreat standby position (see FIG. 5).
Compressed air forcibly retracting is supplied. Resultant force P 2 of the output of the air cylinder 56, as shown in FIG. 7, the coating liquid reservoir formed in the coating liquid reservoir space S 2 of wedge
The coating liquid B 2 of B 2 -1 balances the resultant force P 1 of the pressing force pressing the lip surface 16 of the die 12. If the substrate A has a thickness, the die 12 moves following the thickness of the substrate A. The reason for the following is that the die 12 is disposed so as to be able to move toward and away from the base material transport path R, and the die 12 is moved at the output ends 56a and 56a of the pressing means 55 that moves along the direction of moving toward and away from the die 12. and pressed against the substrate transport path R, is because by balancing the pressing force P 1 and P 2. Since die 12 follows, die 12
The coating film forming gap E formed between the outlet edge 16a (15a) of the lip surface 16 (15) of (11) and the substrate surface Aa (Aa).
2 (E 1 ), the gap dimension W 1 -2 (W 1 -1) is maintained at a constant value, and a constant film thickness W 2 -1 (W 2 -1) is formed on the surface Aa (Aa) of the base material A.
The coating film B 1 -2 (B 2 -2) of -2) is always formed.
以上詳述の如く、本発明に係る両面同時塗工装置（以
下、「本発明塗工装置」という）は、次の如く優れた効
果を有する。 本発明塗工装置は、従来不可能とされていた高粘度な
塗工液による両面同時塗工をも可能にするため、塗工液
の粘度選択領域を低粘度から高粘度まで広範囲にするこ
とができる。 本発明塗工装置は、基材の厚薄に追従して一方のダイ
が移動し両ダイ間の押圧力が均衡を保つため、リップ面
の出口縁部と基材表面との間に形成する塗工膜形成間隙
の間隙寸法を一定値に維持し、基材の両表面に均一厚み
の塗工膜を形成する。その結果、本発明装置は、従来不
可能とされていた非常に薄い数μｍ程度のダイ塗工が可
能となり、新規有用な高粘度用薄膜塗工装置を産業界に
提供する効果を有する。 本発明塗工装置は、基材の厚薄に追従して一方のダイ
が移動し両ダイ間の押圧力が均衡を保つため、基材表面
とリップ面との間に一定間隙の塗工液溜空間を形成する
ことになり、基材表面とリップ面を接触させることはな
い。その結果、本発明装置は、高精度に仕上げられたリ
ップ面を傷付けることなく、長時間に亘る塗工を可能と
し、塗工設備の稼働効率を飛躍的に向上させる効果を有
する。As described in detail above, the double-sided simultaneous coating apparatus according to the present invention (hereinafter, referred to as “the present invention coating apparatus”) has the following excellent effects. The coating apparatus of the present invention is intended to enable simultaneous double-sided coating with a high-viscosity coating liquid, which has been considered impossible, so that the viscosity selection range of the coating liquid is widened from low viscosity to high viscosity. Can be. In the coating apparatus of the present invention, since one die moves following the thickness of the substrate and the pressing force between the two dies is balanced, the coating formed between the exit edge of the lip surface and the substrate surface is controlled. The gap size of the film forming gap is maintained at a constant value, and a coating film having a uniform thickness is formed on both surfaces of the base material. As a result, the apparatus of the present invention can apply a very thin die coating of about several μm, which has been impossible so far, and has an effect of providing a new and useful thin film coating apparatus for high viscosity to industry. In the coating apparatus of the present invention, since one die moves following the thickness of the base material and the pressing force between the two dies is balanced, a coating liquid reservoir having a constant gap between the base material surface and the lip surface is provided. A space is formed, and the substrate surface and the lip surface do not come into contact with each other. As a result, the apparatus of the present invention enables long-time coating without damaging the lip surface finished with high precision, and has the effect of dramatically improving the operating efficiency of the coating equipment.
第１図乃至第４図は同時両面塗工装置の第１実施例を示
すものであつて、第１図はダイ及び乾燥装置を示す部分
断面した側面図、第２図は塗工状態のダイ先端の近傍を
拡大して示す側断面図、第３図は装置全体を示す正面
図、第４図は第３図のIV-IV線における側断面図、第５
図乃至第７図は同時両面塗工装置の第２実施例を示すも
のであつて、第５図はダイが待機状態の側断面図、第６
図（Ａ）はダイが前進待機状態の側断面図、第６図
（Ｂ）はダイが塗工状態の側断面図、第７図は塗工状態
のダイ先端の近傍を拡大して示す側断面図、第８図は従
来の同時両面塗工装置を示す側面図である。 11（12）……ダイ 13（14）……塗工液押出スリット 15（16）……リップ面 55……押圧手段 Ｒ……基材用搬送路1 to 4 show a first embodiment of a simultaneous double-side coating apparatus. FIG. 1 is a partially sectional side view showing a die and a drying apparatus, and FIG. 2 is a die in a coated state. FIG. 3 is a front sectional view showing the entire apparatus, FIG. 4 is a side sectional view taken along line IV-IV in FIG. 3, and FIG.
5 to 7 show a second embodiment of the simultaneous double-side coating apparatus. FIG. 5 is a side sectional view of the stand-by state of the die, and FIG.
6A is a side cross-sectional view of the die in a standby state, FIG. 6B is a side cross-sectional view of the die in a coated state, and FIG. 7 is an enlarged side view showing the vicinity of the tip of the die in a coated state. FIG. 8 is a side view showing a conventional simultaneous double-side coating apparatus. 11 (12) Die 13 (14) Coating liquid extrusion slit 15 (16) Lip surface 55 Pressing means R Substrate transport path
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) B05C 5/00 - 5/04 B05C 7/00 - 11/115──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. 6 , DB name) B05C 5/00-5/04 B05C 7/00-11/115
Claims (1)
峙する二つのダイを配設し、各ダイは、搬送路を横断す
る方向に沿って延設した塗工液押出スリットと、塗工液
押出スリットより基材搬出側に位置する搬送路の局部と
対面し且つこの局部との間で塗工液溜空間を形成するリ
ップ面とを備え、両ダイのリップ面を上記搬送路を介し
て対向させ、前記二つのダイの一方のダイを固定し、他
方のダイを前記搬送路に向かって離接移動自在に配置し
且つ搬送路に向かって押圧手段で押圧したことを特徴と
する両面同時塗工装置。1. A coating liquid extrusion slit, wherein two dies facing each other via the transport path are disposed outside the substrate transport path, and each die extends along a direction crossing the transport path. And a lip surface facing a local portion of the transport path located on the substrate discharge side from the coating liquid extrusion slit and forming a coating liquid storage space between the local portion and the lip surface of both dies. That the two dies are opposed to each other via a transfer path, one of the two dies is fixed, the other die is disposed so as to be able to move away from and close to the transfer path, and is pressed toward the transfer path by pressing means. Characteristic double-sided simultaneous coating device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20901289A JP2832457B2 (en) | 1989-08-10 | 1989-08-10 | Double-sided simultaneous coating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20901289A JP2832457B2 (en) | 1989-08-10 | 1989-08-10 | Double-sided simultaneous coating device |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12205598A Division JP2929189B2 (en) | 1998-05-01 | 1998-05-01 | Double-sided simultaneous coating device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0372976A JPH0372976A (en) | 1991-03-28 |
| JP2832457B2 true JP2832457B2 (en) | 1998-12-09 |
Family
ID=16565816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20901289A Expired - Lifetime JP2832457B2 (en) | 1989-08-10 | 1989-08-10 | Double-sided simultaneous coating device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2832457B2 (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69514542T2 (en) * | 1994-11-23 | 2000-05-31 | Alcan International Ltd., Montreal | COATING MATERIALS WITH WAXY SUBSTANCES |
| JP2932163B2 (en) * | 1994-11-28 | 1999-08-09 | 株式会社ヒラノテクシード | Double side coating type coating equipment |
| JP2890184B2 (en) * | 1996-07-22 | 1999-05-10 | 株式会社ヒラノテクシード | Double-side coating type coating device and coating system |
| JP3200763B2 (en) | 1997-02-04 | 2001-08-20 | 株式会社ヒラノテクシード | Double side coating type coating equipment |
| JP4354598B2 (en) * | 1999-12-20 | 2009-10-28 | 株式会社ヒラノテクシード | Double side coating type coating equipment |
| JP4614504B2 (en) * | 2000-07-05 | 2011-01-19 | 大日本印刷株式会社 | Coating equipment |
| JP5048090B2 (en) | 2010-01-20 | 2012-10-17 | 中外炉工業株式会社 | Double-side coating device |
| JP5529673B2 (en) | 2010-08-16 | 2014-06-25 | 中外炉工業株式会社 | Double-side coating device |
| JP6328949B2 (en) * | 2014-02-17 | 2018-05-23 | 株式会社Ｓｃｒｅｅｎホールディングス | Double-sided coating apparatus, double-sided coating method and coating film forming system |
| JP2015188776A (en) * | 2014-03-27 | 2015-11-02 | 株式会社Ｓｃｒｅｅｎホールディングス | Double-sided coating apparatus, double-sided coating method, and coating film formation system |
-
1989
- 1989-08-10 JP JP20901289A patent/JP2832457B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0372976A (en) | 1991-03-28 |
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