JPH02222751A - Coating method - Google Patents
Coating methodInfo
- Publication number
- JPH02222751A JPH02222751A JP4418589A JP4418589A JPH02222751A JP H02222751 A JPH02222751 A JP H02222751A JP 4418589 A JP4418589 A JP 4418589A JP 4418589 A JP4418589 A JP 4418589A JP H02222751 A JPH02222751 A JP H02222751A
- Authority
- JP
- Japan
- Prior art keywords
- coating
- sheet
- extrusion
- soln
- liquid
- 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.)
- Pending
Links
- 238000000576 coating method Methods 0.000 title claims abstract description 103
- 239000011248 coating agent Substances 0.000 claims abstract description 96
- 230000003068 static effect Effects 0.000 claims abstract description 7
- 239000007788 liquid Substances 0.000 claims description 26
- 238000007667 floating Methods 0.000 claims description 12
- 239000010408 film Substances 0.000 abstract description 19
- 239000010409 thin film Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 11
- 238000007765 extrusion coating Methods 0.000 description 7
- 238000007665 sagging Methods 0.000 description 7
- 238000007664 blowing Methods 0.000 description 6
- 239000011247 coating layer Substances 0.000 description 6
- 238000001125 extrusion Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000003973 paint Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 2
- 238000007756 gravure coating Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 102100025490 Slit homolog 1 protein Human genes 0.000 description 1
- 101710123186 Slit homolog 1 protein Proteins 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000007766 curtain coating Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000007888 film coating Substances 0.000 description 1
- 238000009501 film coating Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- -1 polyethylene terephthalate Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
Landscapes
- Application Of Or Painting With Fluid Materials (AREA)
- Manufacturing Of Magnetic Record Carriers (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、塗布対象シートをエア吹き出しドラムの周囲
を空間をもって浮上状態で走行させるとともに、そのシ
ートに押出し型塗布装置により塗布液を塗布する方法に
関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention involves moving a sheet to be coated in a floating state around an air blowing drum with a space, and applying a coating liquid to the sheet using an extrusion type coating device. Regarding the method.
コーティング方式としては、ロールコート、グラビアコ
ート、エクストルージョンコート、スライドビードコー
ト、カーテンコート等種々の方式があることはよく知ら
れている。It is well known that there are various coating methods such as roll coating, gravure coating, extrusion coating, slide bead coating, and curtain coating.
磁気記録媒体は、支持体上に磁性塗布液を塗布すること
によって得られるが、その塗布方式としては、ロールコ
ート、グラビアコート、エクストルージョンコートが一
般的である。この中でも、エクストルージョンコートは
、均一な塗布膜厚が得られるので優れている。Magnetic recording media are obtained by coating a magnetic coating liquid on a support, and the coating methods generally include roll coating, gravure coating, and extrusion coating. Among these, extrusion coating is excellent because it provides a uniform coating thickness.
主として磁気記録媒体の構造を目的としたエクストルー
ジョンコート法における従来技術として、特開昭５７−
８４７７１号、同５Ｂ −１０４６６６号、同６０−２
３８１７９号公報などに記載のものが知られている。As a conventional technique in the extrusion coating method mainly aimed at the structure of magnetic recording media, Japanese Patent Application Laid-Open No. 57-
No. 84771, No. 5B-104666, No. 60-2
The one described in Japanese Patent No. 38179 and the like is known.
この種のエクストルージョンコート法においては、シー
トを上流および下流のガイドロールをめぐらせながら、
これらガイドロール間において塗布ヘッドをシートに対
して押し当てながら、塗布液をスリットから押出してシ
ートに塗布するようにしである。In this type of extrusion coating method, the sheet is passed around upstream and downstream guide rolls while
While pressing the coating head against the sheet between these guide rolls, the coating liquid is forced out through the slit and applied to the sheet.
他方、特公昭４９−１７８５３号公報には、連続的に走
行するシートに塗布液をドクター塗布またはスライドホ
ッパー塗布法により塗布するとともに、その際シートを
塗布面側よりその反対面側をより高い静圧を保ことによ
りエア吹き出しドラム表面上に空間をもって浮上状態で
走行させる技術が開示されている。On the other hand, Japanese Patent Publication No. 49-17853 discloses that a coating liquid is applied to a continuously running sheet by doctor coating or slide hopper coating, and at the same time, the opposite side of the sheet is kept at a higher static temperature than the coating side. A technique has been disclosed that allows air to travel in a floating state with a space above the surface of the air blowing drum by maintaining pressure.
しかるに、確かにエクストルージョンコート法は、均一
な塗布膜厚を得ることが容易である点で優れているが、
シートが上下流ガイドロールを通るとき、ロールの回転
の不安定性や振動に伴って、シートがごくわずかである
が振動することがみられ、横段状の塗布ムラを生じやす
い。However, although extrusion coating is certainly superior in that it is easy to obtain a uniform coating thickness,
When the sheet passes through the upstream and downstream guide rolls, it is observed that the sheet vibrates very slightly due to the instability and vibration of the rotation of the rolls, which tends to cause uneven coating in the form of horizontal steps.
この点、特公昭４９−１７８５３号公報技術によれば、
シートが主にエアによる静圧によってエア吹き出しドラ
ムから浮上し、「塗布装置先端部」に対して当接するよ
うになっているので、たとえガイドローラが存在してい
ても、その振動はシートの途中で減衰してしまい、もっ
て横段状の塗布ムラを解消できる点で優れている。In this regard, according to the technology published in Japanese Patent Publication No. 49-17853,
The sheet floats up from the air blowing drum mainly due to the static pressure of the air and comes into contact with the "tip of the applicator", so even if a guide roller is present, the vibrations will be transmitted midway through the sheet. It is excellent in that it can eliminate horizontal step-like coating unevenness.
しかし、同公報の第２図に示されたドクターエツジ法で
は、特に磁性塗料の塗布に適用した場合、膜厚のコント
ロールがきわめて難しい。また、同第３図や第６図の方
法では、シート（支持体）を傷つけてしまうことが多い
。さらに、第４図の方法では、塗布液の漏れ止めが難し
いし、塗布液の溶剤が有機溶剤であると、漏れ止め用パ
ツキンの材質の選定がきわめて難しいものとなる。However, with the doctor edge method shown in FIG. 2 of the same publication, it is extremely difficult to control the film thickness, especially when applied to the application of magnetic paint. Furthermore, the methods shown in FIGS. 3 and 6 often damage the sheet (support). Furthermore, with the method shown in FIG. 4, it is difficult to prevent the coating solution from leaking, and if the solvent of the coating solution is an organic solvent, it becomes extremely difficult to select the material for the leak-prevention gasket.
また、漏れを発生させる圧力が高いとき、コーター下部
より液が流出しながら塗布されるという問題を生じた。Furthermore, when the pressure that causes leakage is high, there is a problem in that the liquid flows out from the bottom of the coater while being coated.
また、圧力が低いとき入側エツジにより支持体にきすを
生じる問題を生じた。しかも、かかる公報技術の根本的
な問題は、シートにつれやたるみ（片伸び）がある場合
において顕著にあられれる。すなわち、つれやたるみが
ある場合、塗布部において、塗布液はほぼ大気圧の状態
で塗布され、その塗布圧力が支持体の塗布面にほとんど
作用しないので、つれやたるみのある部分が塗布ヘッド
がわに膨らむのであれば、膜厚は薄くなるし、凹むので
あれば逆に厚くなる。したがって、走行方向に膜厚が不
均一となり、かつつれやたるみ部分が幅方向に局所的な
場合には、幅方向の膜厚不均一となってあられれる。Furthermore, when the pressure was low, there was a problem in that the entrance edge caused scratches on the support. In addition, the fundamental problem of this publication becomes noticeable when the sheet has curling or sagging (one-sided elongation). In other words, if there is sagging or sagging, the coating liquid is applied at almost atmospheric pressure at the coating section, and the application pressure hardly acts on the coated surface of the support, so the area with sagging or sagging can be removed by the coating head. If it bulges out, the film thickness will become thinner, and if it dents, it will become thicker. Therefore, if the film thickness becomes non-uniform in the running direction, and if fraying or sagging portions are localized in the width direction, the film thickness may become non-uniform in the width direction.
また、上記公報技術のものは、塗布液が低粘度であると
き、高厚膜塗布液には適しておらず、塗布ムラおよび膜
厚不均一を招き易い。Further, the technique disclosed in the above-mentioned publication is not suitable for coating a high thickness film when the coating liquid has a low viscosity, and tends to cause uneven coating and non-uniform film thickness.
そこで、本発明の主たる目的は、シートのつれやたるみ
が少々存在しても均一な膜厚をもって塗布できるととも
に、低粘度塗布液および高膜厚塗布条件であっても、あ
るいは高粘度薄膜塗布であっても良好な塗布を行い得る
塗布方法を提供することにある。Therefore, the main object of the present invention is to be able to apply a film with a uniform thickness even if there is some kinking or sagging of the sheet, and to be able to apply a film with a uniform thickness even when using a low viscosity coating liquid and high film thickness, or to apply a high viscosity thin film. It is an object of the present invention to provide a coating method that can perform good coating even when there is a coating.
上記課題は、連続的に走行するシートに塗布液を層状に
塗布するとともに、塗布面側よりその反対面側が高い静
圧を有する空間をもって浮上状態で前記シートが走行す
る塗布方法において一前記塗布面側に、スリットから塗
布液を押し出しながら塗布する押出し型塗布装置を配置
し、この塗布装置により前記塗布液を塗布することで解
決できる。The above problem is solved in a coating method in which a coating liquid is applied in layers to a continuously running sheet, and the sheet runs in a floating state with a space having a static pressure higher on the opposite side than on the coating side. This can be solved by disposing an extrusion-type coating device on the side that applies the coating liquid while extruding it from the slit, and applying the coating liquid with this coating device.
本発明では、シート（裸の支持体、あるいは先に塗布し
た塗布層を有する支持体であることを妨げない）を浮上
状態とし、それに塗布するものであるため、前記公報技
術と同様に横段状の塗布ムラを防止できる。In the present invention, since the sheet (a bare support or a support having a previously applied coating layer) is brought into a floating state and the coating is applied thereto, the horizontal step is applied as in the above-mentioned technique. It can prevent uneven coating.
本発明の主要点は、かかるシートの浮上走行技術に対し
て押出し型塗布装置を組み合わせることにある。かかる
押出し型塗布装置においては、その塗布ヘッドがシート
に押し当てられ、あるいは塗布液の押し出し圧力がシー
トに作用するため、シートにたるみやつれがあったとし
ても、その部分が引き伸ばされるあるいは展張されるた
め、塗布膜厚がシートの走行方向および幅方向に均一に
なる。The main point of the present invention is to combine such sheet floating technology with an extrusion coating device. In such an extrusion-type coating device, the coating head is pressed against the sheet, or the extrusion pressure of the coating liquid is applied to the sheet, so even if the sheet is slack or wrinkled, that part is stretched or expanded. Therefore, the coating film thickness becomes uniform in the running direction and width direction of the sheet.
また、塗布液が低粘度であっても、塗布液は大気圧より
かなり大きい圧力をもってスリットから強制的に押し出
されるので、主にその押し出し圧力、押し出し量、塗布
ヘッドのシートへの押し当て度合、およびシートの走行
速度を設定しておけば、塗布性に影響を与える他の要因
はほとんどなく、もって良好な塗布性が得られる。さら
に、高膜厚塗布条件でも同様なことが言える。In addition, even if the coating liquid has a low viscosity, the coating liquid is forcibly extruded from the slit at a pressure considerably higher than atmospheric pressure, so the extrusion pressure, amount of extrusion, degree of pressing of the coating head against the sheet, etc. If the running speed of the sheet is set, there are almost no other factors that affect coating properties, and good coating properties can be obtained. Furthermore, the same can be said under high film thickness coating conditions.
以下本発明を図面を参照しながらさらに詳説する。 The present invention will be explained in more detail below with reference to the drawings.
第１図において、１はエア吹き出しドラムで、フリーロ
ーラ２．３間に配され、塗布装置１０がわに散点状また
はドラムの長手方向に長いスリット状の吹き出し口１ａ
、ｌｂを有している。シート４は、フリーローラ２をめ
ぐってドラムｌの外表面から空間５を保ちながら浮上状
態で走行し、フリーローラ３を通って、図示しない乾燥
装置へと至り、塗布層の乾燥がなされた後、巻き取られ
るようになっている。In FIG. 1, reference numeral 1 denotes an air blowing drum, which is disposed between free rollers 2 and 3, and has air blowing ports 1a in the form of scattered dots or long slits in the longitudinal direction of the drum.
, lb. The sheet 4 travels in a floating state while maintaining a space 5 from the outer surface of the drum 1 around the free roller 2, passes through the free roller 3, reaches a drying device (not shown), and after the coating layer is dried, it is rolled. It is about to be taken.
ドラムｌ内にはブロワ−６からの空気が吹き込まれ、各
吹き出し口１ａ、ｌｂから吹き出され、これによってシ
ート４をドラム１の外表面から空間５をもって浮上状態
で走行させるようにしである。７および８はエアの吹き
抜は防止体で、吹き出し口１ａ、ｌｂから吹き出したエ
アがシート４とドラム１外表面との間から直ちに抜けな
いようにし、所望の間隔を保ち、かつシート１の裏面の
空間５を所望の静圧に保つためのものである。Air from a blower 6 is blown into the drum 1 and blown out from each outlet 1a, lb, thereby causing the sheet 4 to travel in a floating state with a space 5 above the outer surface of the drum 1. 7 and 8 are air blow-out prevention bodies that prevent the air blown from the blow-off ports 1a and lb from immediately escaping between the sheet 4 and the outer surface of the drum 1, maintain a desired distance, and prevent the air from blowing out from the sheet 1. This is to maintain the space 5 on the back surface at a desired static pressure.
かかる浮上走行状態のシート４に対して押出し型塗布装
置１０により塗布液の塗布が行なわれる。The extrusion-type coating device 10 applies a coating liquid to the sheet 4 in such a floating state.
塗布装置ｌＯは２つのヘッド部材１１Ａ、１１Ｂとの間
に液溜め部１２に連通ずるスリット１３を有し、塗布液
をポンプ（図示せず）により液溜め部１２に送り込んだ
後、シート４とほぼ同じ長さを有するスリット１３から
押し出し、シート４の塗布面へ塗布する構成とされてい
る。The coating device IO has a slit 13 that communicates with the liquid reservoir 12 between the two head members 11A and 11B, and after feeding the coating liquid into the liquid reservoir 12 with a pump (not shown), the coating device 10 coats the sheet 4 and the liquid. It is configured to be extruded through slits 13 having approximately the same length and applied to the coating surface of the sheet 4.
この塗布の際、好ましくは、第３図のように、塗布装置
１０のヘッド部をシート４側へ、たとえばシート４の走
行仮想線より距離ｑ分押し込むようにして塗布する。そ
こで、この押し込みに対抗してシート４を裏面から押し
返えさせるために、押し込み部分とほぼ同じか大きい幅
してかつ少くとも塗布幅をカバーする長さのスリット１
ａをドラム１に形成しておくのが望まれる。During this coating, preferably the head portion of the coating device 10 is pushed toward the sheet 4 side, for example, by a distance q from the imaginary travel line of the sheet 4, as shown in FIG. Therefore, in order to counter this pushing and push back the sheet 4 from the back side, a slit 1 with a width that is approximately the same as or larger than the pushing part and a length that covers at least the application width is made.
It is desirable to form a on the drum 1.
ヘッド部材１１Ａ、１１Ｂのエツジ面の形状は限定され
るものではないが、たとえば第４図のように、フロント
エツジ面１ａの終端Ｘにおける接線よりバックェツジ面
ｌｂが突出したものを用いることができる。フロントエ
ツジ面１ａには、同図仮想線で示すように直線部分１ａ
’ を有していてもよい。Although the shape of the edge surfaces of the head members 11A and 11B is not limited, for example, as shown in FIG. 4, it is possible to use a head member in which the back edge surface lb protrudes from the tangent at the terminal end X of the front edge surface 1a. The front edge surface 1a has a straight portion 1a as shown by the imaginary line in the figure.
' may also be included.
ヘッド部材１１Ａ、ｌＩＢのエツジ面１１ａ。Edge surfaces 11a of head members 11A and IIB.
１１ｂがシート４に直接または塗布液を介して接触する
長さｌは、２０ｍ以下であることが望まれる。さらに、
スリット１３の間隙は３０μｍ〜５０（）μｍ、特に５
０μｆｆ１〜３００μｍが好ましい。It is desirable that the length l of the contact between the sheet 11b and the sheet 4, either directly or via a coating liquid, be 20 m or less. moreover,
The gap between the slits 13 is 30 μm to 50 () μm, especially 5
0 μff1 to 300 μm is preferable.
この接触面長さｌは、シート４の走行円弧の曲率と関係
する。走行円弧はドラムの直径りと関係するから、ドラ
ム直径りとの関係で言えば、１／Ｄはｌ／２５以下が好
ましい。また、前記ｑは１０市以下、特に３Ｂ以下が好
ましく、下限としては１閤程度が望ましい。This contact surface length l is related to the curvature of the traveling arc of the sheet 4. Since the running arc is related to the diameter of the drum, 1/D is preferably 1/25 or less in relation to the drum diameter. Further, the above q is preferably 10 or less, particularly 3B or less, and the lower limit is preferably about 1 loaf.
他方、空間５における静圧としては２０〜２００ｎｕａ
Ａｑが好ましい。On the other hand, the static pressure in the space 5 is 20 to 200 nua
Aq is preferred.
ドラムｌの浮上走行部分に対応する以外の個所のドラム
形状は何ら限定されない。浮上走行部分に対応する外表
面は円形ではなく楕円の一部であってもよい。There are no limitations on the shape of the drum at any location other than the portion corresponding to the floating portion of the drum I. The outer surface corresponding to the floating traveling portion may not be circular but may be a part of an ellipse.
本発明は、磁気記録媒体の磁性塗料の塗布に好適に用い
ることができるが、写真感光材料製造の塗布などにも用
いることができる。The present invention can be suitably used for coating magnetic paints on magnetic recording media, but can also be used for coating in the production of photographic materials.
塗布液の粘度が１〜４０００ｃｐ （常温、Ｂ型粘度計
測定値）の範囲において十分塗布を行うことができ、塗
布膜厚（ウェット膜厚）として５〜１５０μｍの範囲に
おいて良好な塗布性を示す。Sufficient coating can be performed when the viscosity of the coating liquid is in the range of 1 to 4000 cp (measured by a B-type viscometer at room temperature), and good coating properties are exhibited in the range of coating film thickness (wet film thickness) of 5 to 150 μm.
シート４の裏面には、第１図のように、予め同様な押出
し型塗布装置２０により、あるいは別の型式の塗布装置
により塗布層を形成してもよいし、塗布装置１０による
塗布後、裏面または塗布層４ａ上に液種が異なる塗布層
を形成してもよい。As shown in FIG. 1, a coating layer may be formed on the back surface of the sheet 4 in advance using a similar extrusion-type coating device 20 or another type of coating device, or after coating with the coating device 10, a coating layer may be formed on the back surface. Alternatively, coating layers of different liquid types may be formed on the coating layer 4a.
本発明に係わるシートとしては、ポリエステルフィルム
等のプラスチックフィルム、紙、両者の積層シート、金
属シート等を挙げることができ、可撓性材料であればそ
の材質は問われない。Examples of the sheet according to the present invention include a plastic film such as a polyester film, paper, a laminated sheet of both, a metal sheet, etc., and the material is not limited as long as it is a flexible material.
次に実施例にて本発明の効果を明らかにする。 Next, the effects of the present invention will be clarified in Examples.
（実施例１〜６）
支持体として、２０ｕｍ厚のポリエチレンテレフタレー
トシートを用い、これにメタル粉を含有する磁性塗料を
乾燥膜厚３μｍ、塗布幅６００ＩＩｌｊＩ＋で、第１回
の塗布装置により塗布した。また、ドラムの直径を２５
０ｍｍ、シートのドラム表面からの浮量を１．０ｍとし
た。(Examples 1 to 6) A polyethylene terephthalate sheet with a thickness of 20 um was used as a support, and a magnetic paint containing metal powder was applied to this with a dry film thickness of 3 μm and a coating width of 600 IIljI+ using a first coating device. Also, the diameter of the drum is 25
0 mm, and the floating amount of the sheet from the drum surface was 1.0 m.
（比較例１〜４）
特公昭４９−１７８５３号公報の第４図の塗布装置を用
いたほかは、実施例と同一条件で塗布した。(Comparative Examples 1 to 4) Coating was carried out under the same conditions as in the examples except that the coating apparatus shown in FIG. 4 of Japanese Patent Publication No. 49-17853 was used.
（比較例５，６）
特開昭６２−１６３７７３号公報技術に従うとともに、
膜厚変化打消し用ロールの移動量を５ｍｍとしたほかは
実施例と同一条件とした。(Comparative Examples 5 and 6) In accordance with the technique disclosed in JP-A-62-163773,
The conditions were the same as in the example except that the amount of movement of the film thickness change canceling roll was 5 mm.
〈結果〉
上記条例において、塗布速度、塗布液粘度を変えた場合
において、塗布状況の観察結果および５００ｍ以上塗布
して生じた膜厚のバラツキの最大値として規定される両
サイドにおける膜厚差の結果は、第１表の通りであった
。<Results> According to the above regulations, when the coating speed and viscosity of the coating solution are changed, the observation results of the coating situation and the difference in film thickness on both sides, which is defined as the maximum value of the variation in film thickness after coating over 500 m, are calculated. The results were as shown in Table 1.
以上の通り、本発明によれば、シートの形状不良があっ
ても良好な塗布性が得られるとともに、低粘度塗布液お
よび厚膜塗布条件でも均一な塗布を行うことができる。As described above, according to the present invention, good coating properties can be obtained even if the sheet has a defective shape, and uniform coating can be performed even with a low viscosity coating liquid and thick film coating conditions.
第ト図〜第４図は本発明法による塗布状態の概略断面図
である。Figures 1 to 4 are schematic cross-sectional views of the coating state according to the method of the present invention.
Claims (1)
るとともに、塗布面側よりその反対面側が高い静圧を有
する空間をもって浮上状態で前記シートが走行する塗布
方法において； 前記塗布面側に、スリットから塗布液を押し出しながら
塗布する押出し型塗布装置を配置し、この塗布装置によ
り前記塗布液を塗布することを特徴とする塗布方法。(1) In a coating method in which a coating liquid is applied in layers to a continuously running sheet, and the sheet runs in a floating state with a space having a higher static pressure on the opposite side than on the coating side; A coating method characterized in that an extrusion-type coating device that applies the coating liquid while extruding it from a slit is disposed, and the coating liquid is applied by this coating device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4418589A JPH02222751A (en) | 1989-02-23 | 1989-02-23 | Coating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4418589A JPH02222751A (en) | 1989-02-23 | 1989-02-23 | Coating method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02222751A true JPH02222751A (en) | 1990-09-05 |
Family
ID=12684515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4418589A Pending JPH02222751A (en) | 1989-02-23 | 1989-02-23 | Coating method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02222751A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013066875A (en) * | 2011-09-26 | 2013-04-18 | Dainippon Printing Co Ltd | Coating method and coating apparatus |
-
1989
- 1989-02-23 JP JP4418589A patent/JPH02222751A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013066875A (en) * | 2011-09-26 | 2013-04-18 | Dainippon Printing Co Ltd | Coating method and coating apparatus |
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