JPH05337434A - Rotary coating material applying method - Google Patents
Rotary coating material applying methodInfo
- Publication number
- JPH05337434A JPH05337434A JP14270792A JP14270792A JPH05337434A JP H05337434 A JPH05337434 A JP H05337434A JP 14270792 A JP14270792 A JP 14270792A JP 14270792 A JP14270792 A JP 14270792A JP H05337434 A JPH05337434 A JP H05337434A
- Authority
- JP
- Japan
- Prior art keywords
- disk
- coating material
- active energy
- shaped substrate
- film
- 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
Landscapes
- Photoreceptors In Electrophotography (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、円盤状基板に活性エネ
ルギー線硬化型塗料をスピンコート法により塗布する回
転塗布方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spin coating method for coating a disk-shaped substrate with an active energy ray-curable coating material by a spin coating method.
【０００２】[0002]
【従来の技術】従来知られている円盤状基板への塗料の
塗布方法は、例えば、光ディスクの場合、グルーブと称
される溝が形成されたポリカーボネート樹脂、ポリメチ
ルメタクリルレート樹脂、エポキシ樹脂、アモルファス
ポリオレフィン樹脂等の円盤状のプラスチック基板に、
グルーブが形成された側とは反対側の面にハードコート
剤と称される活性エネルギー線硬化型塗料をスピンコー
ト法により回転塗布してプラスチック基板全面に均一に
行きわたらせた後、活性エネルギー線を照射してハード
コート膜を製膜する。2. Description of the Related Art Conventionally known coating methods for coating a disk-shaped substrate are, for example, in the case of an optical disk, a polycarbonate resin having grooves called grooves, a polymethylmethacrylate resin, an epoxy resin, an amorphous resin. On a disk-shaped plastic substrate such as polyolefin resin,
An active energy ray-curable coating material called a hard coating agent is spin-coated on the surface opposite to the side where the groove is formed by a spin coating method so that the active energy ray is evenly spread over the entire surface of the plastic substrate. Irradiate to form a hard coat film.
【０００３】次に真空蒸着法やスパッタ法等によりグル
ーブが形成された側に記録膜を製膜して光ディスクを作
製する。この光ディスクの記録膜形成面側に保護コート
剤と称される活性エネルギー線硬化型塗料をスピンコー
ト法により回転塗布して光ディスク全面に保護膜を製膜
していた。Next, a recording film is formed on the side where the groove is formed by a vacuum vapor deposition method, a sputtering method or the like to manufacture an optical disk. An active energy ray-curable coating material called a protective coating agent was spin-coated by a spin coating method on the recording film forming surface side of this optical disk to form a protective film on the entire surface of the optical disk.
【０００４】また、コンパクトディスクでは予め所定の
情報信号が刻印された円盤状のプラスチック基板に、情
報信号が刻印されている側の面に真空蒸着法やスパッタ
法により反射膜を製膜して、この反射膜形成面側に保護
コート剤と称される活性エネルギー線硬化型塗料をスピ
ンコート法により回転塗布してコンパクトディスク全面
に保護膜を製膜していた。Further, in the case of a compact disc, a reflective film is formed on a disk-shaped plastic substrate on which a predetermined information signal is preliminarily engraved by a vacuum deposition method or a sputtering method on the surface on which the information signal is engraved. An active energy ray-curable coating material called a protective coating agent was spin-coated by a spin coating method on the reflective film forming surface side to form a protective film on the entire surface of the compact disc.
【０００５】このようにハードコート剤や保護コート剤
等の活性エネルギー線硬化型塗料を円盤状基板にスピン
コート法により回転塗布する場合には、低速回転時に一
定速度で樹脂を一定位置から一定量円盤状基板に塗布
し、次に高速回転させて余分な活性エネルギー線硬化型
塗料を振り切り、その後、活性エネルギー線を照射して
硬化させて均一な塗膜を形成していた。In this way, when spin coating the active energy ray-curable coating material such as a hard coating agent or a protective coating agent on a disk-shaped substrate by spin coating, a certain amount of resin is deposited from a certain position at a certain speed during low speed rotation. It was applied on a disk-shaped substrate, then rotated at a high speed to shake off excess active energy ray-curable coating material, and then irradiated with active energy rays to be cured to form a uniform coating film.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、この方
法では、高速回転させて余分な活性エネルギー線硬化型
塗料を振り切った直後の樹脂表面には細かいさざ波状の
すじが生じており、特にレベリング性が悪い活性エネル
ギー線硬化型塗料ではそのままの状態で活性エネルギー
線を照射すると硬化後の塗膜表面にも、そのさざ波が残
ってしまい、細かいすじとして外観不良を生じる欠点を
有していた。However, in this method, fine ripple-like streaks are formed on the resin surface immediately after the excess active energy ray-curable coating material is shaken off by rotating at a high speed, and the leveling property is particularly high. When a bad active energy ray-curable coating material is irradiated with an active energy ray as it is, the ripples remain on the surface of the coating film after curing, resulting in the appearance of fine lines and poor appearance.
【０００７】本発明が解決しようとする課題は、円盤状
基板に活性エネルギー線硬化型塗料をスピンコート法に
より塗布する回転塗布方法において、活性エネルギー線
硬化型塗料塗布後の細かいすじの発生を無くし外観不良
を皆無として、スピンコート工程における収率を向上さ
せることにある。The problem to be solved by the present invention is to eliminate the generation of fine streaks after the application of the active energy ray-curable coating material in the spin coating method of applying the active energy ray-curable coating material to the disk-shaped substrate by the spin coating method. It is to eliminate the appearance defect and improve the yield in the spin coating process.
【０００８】[0008]
【課題を解決するための手段】本発明は上記課題を解決
するために、円盤状基板を低速回転させながら一定量の
活性エネルギー線硬化型塗料を円盤状基板に塗布する第
１工程、円盤状基板を高速回転させて基板上の余分な塗
料を振り切る第２工程及び円盤状基板上の未硬化の塗膜
に上方からヒーターにより加熱した後に活性エネルギー
線照射を行う第３工程を有する回転塗布方法を提供す
る。In order to solve the above problems, the present invention provides a first step of applying a certain amount of active energy ray-curable coating material to a disc-shaped substrate while rotating the disc-shaped substrate at a low speed, the disc-shaped substrate. Spin coating method having a second step of rotating the substrate at a high speed to shake off excess paint on the substrate and a third step of irradiating an uncured coating film on the disk-shaped substrate with a heater from above and then irradiating with active energy rays. I will provide a.
【０００９】[0009]
【作用】本発明の回転塗布方法によれば、円盤状基板に
活性エネルギー線硬化型塗料等の塗料をスピンコート法
により塗布する回転塗布方法において、活性エネルギー
線硬化型塗料を一定量塗布し、次に高速回転によって円
盤状基板を回転させて余分な活性エネルギー線硬化型塗
料を振り切り、その後、活性エネルギー線を照射する前
に、円盤状基板と平行な平板状ヒーターの下部を通過さ
せるので、レベルング性が悪い活性エネルギー線硬化型
塗料でも表面温度を上昇させることによりレベリング性
を促進させることができるため、さざ波が即座に消滅
し、従って、その後、活性エネルギー線を照射して硬化
させた塗膜には、細かいすじは、一切見られず、外観不
良を皆無にすることができる。According to the spin coating method of the present invention, in a spin coating method in which a coating material such as an active energy ray curable coating material is applied to a disk-shaped substrate by a spin coating method, a fixed amount of the active energy ray curable coating material is applied, Next, rotate the disk-shaped substrate by high-speed rotation to shake off the excess active energy ray-curable coating material, and then, before irradiating with the active energy rays, pass through the lower part of the plate-shaped heater parallel to the disk-shaped substrate, Even with active energy ray-curable coatings with poor leveling properties, the leveling property can be promoted by raising the surface temperature, so the ripples disappear immediately, and therefore, irradiation with active energy rays is followed by curing. No fine streaks are seen in the coating film, and it is possible to eliminate any defective appearance.
【００１０】[0010]
【実施例】以下、実施例を示しながら具体的説明を行な
う。EXAMPLES Hereinafter, a concrete description will be given with reference to examples.
【００１１】（実施例）図１に示したように、円盤状基
板である光ディスク１を記録膜２の形成面側を上にして
ターンテーブル３に設置し、次に記録膜２の形成面側を
保護するために保護コート剤「ＥＸ−３１８」（大日本
インキ化学工業社製）４を塗布する。(Example) As shown in FIG. 1, an optical disk 1 which is a disk-shaped substrate is placed on a turntable 3 with the surface on which the recording film 2 is formed facing up, and then on the surface on which the recording film 2 is formed. A protective coating agent “EX-318” (manufactured by Dainippon Ink and Chemicals, Inc.) 4 is applied to protect the ink.
【００１２】この場合、ターンテーブル３を６０ｒｐｍ
の低速回転で回転させると同時に、φ１．０５mmの塗布
用ノズル５を光ディスク１の中心より半径２３mmの位置
であって、光ディスクの面上１mmの位置に移動させて
１．４kgf／cm2の圧力で保護コート剤４の塗布を２秒間
行ない、次に６０００ｒｐｍの高速回転で光ディスクを
回転させて余分な保護コート剤を振り切った。この場合
の樹脂表面の状態は図２に示したように細かいさざ波状
のすじ６が生じた状態であった。In this case, the turntable 3 is set to 60 rpm.
At the same time, the coating nozzle 5 having a diameter of 1.05 mm is moved to a position of a radius of 23 mm from the center of the optical disc 1 and a position of 1 mm on the surface of the optical disc at a pressure of 1.4 kgf / cm 2 . The protective coating agent 4 was applied for 2 seconds, then the optical disc was rotated at a high speed of 6000 rpm to shake off the excess protective coating agent. In this case, the resin surface was in a state where fine ripple-like streaks 6 were generated as shown in FIG.
【００１３】その後、光ディスクを図３に示したような
構造で、表面温度１００℃の平板状ヒーター７の下部約
１cmの所を約５秒間通過させ、しかる後に紫外線８を照
射して保護コート剤４を硬化させて保護コート膜を形成
したが、保護コート膜表面には図４に示したように細か
いすじは全く見られなかった。Thereafter, the optical disk having the structure shown in FIG. 3 is passed through a flat heater 7 having a surface temperature of 100 ° C. for about 5 seconds under the flat heater 7, and then ultraviolet rays 8 are irradiated to the protective coating agent. 4 was cured to form a protective coat film, but no fine lines were found on the surface of the protective coat film as shown in FIG.
【００１４】この平板状ヒーターの温度は、光ディスク
に熱変形を生じさせて機械特性を劣下させてしまう温度
でなく、レベリング性を促進するような温度であればい
ずれの温度でも良く、活性エネルギー線硬化型塗料の種
類やレベリング性能によって適宜選択すれば良い。The temperature of the flat heater is not a temperature that causes thermal deformation of the optical disk and deteriorates the mechanical characteristics, and may be any temperature as long as it promotes the leveling property. It may be appropriately selected depending on the type of the line curable coating material and the leveling performance.
【００１５】（比較例）図１に示したように、円盤状基
板である光ディスク１を記録膜２の形成面側を上にして
ターンテーブル３に設置し、次に記録膜２の形成面側を
保護するために保護コート剤「ＥＸ−３１８」（大日本
インキ化学工業社製）４を塗布する。(Comparative Example) As shown in FIG. 1, the optical disk 1 which is a disk-shaped substrate is placed on the turntable 3 with the side on which the recording film 2 is formed facing up, and then on the side on which the recording film 2 is formed. A protective coating agent “EX-318” (manufactured by Dainippon Ink and Chemicals, Inc.) 4 is applied to protect the ink.
【００１６】この場合、ターンテーブル３を６０ｒｐｍ
の低速回転で回転させると同時に、φ１．０５mmの塗布
用ノズル５を光ディスク１の中心より半径２３mmの位置
であって、光ディスクの面上１mmの位置に移動させて
１．４kgf／cm2の圧力で保護コート剤４の塗布を２秒間
行い、次に６０００ｒｐｍの高速回転で光ディスクを回
転させて余分な保護コート剤を振り切った。この場合の
樹脂表面の状態は図２に示したように細かいさざ波状の
すじ６が生じた状態であった。In this case, the turntable 3 is set to 60 rpm.
At the same time, the coating nozzle 5 having a diameter of 1.05 mm is moved to a position of a radius of 23 mm from the center of the optical disc 1 and a position of 1 mm on the surface of the optical disc at a pressure of 1.4 kgf / cm 2 . The protective coating agent 4 was applied for 2 seconds, and then the optical disc was rotated at a high speed of 6000 rpm to shake off the excess protective coating agent. In this case, the resin surface was in a state where fine ripple-like streaks 6 were generated as shown in FIG.
【００１７】その後、図５に示したように直ちに紫外線
８を照射して保護コート剤４を硬化させて保護コート膜
を形成したが、保護コート膜には図２に示したのと同様
に細かいすじ６が塗膜全面に見られた。Thereafter, as shown in FIG. 5, ultraviolet rays 8 were immediately irradiated to cure the protective coating agent 4 to form a protective coating film. The protective coating film was as fine as that shown in FIG. Streaks 6 were found all over the coating.
【００１８】[0018]
【発明の効果】本発明の回転塗布方法では、活性エネル
ギー線硬化型塗料を一定量塗布し、次に高速回転によっ
て円盤状基板を回転させて余分な活性エネルギー線硬化
型塗料を振り切った後、活性エネルギー線を照射する前
に、円盤状基板と平行な平板状ヒーターの下部を通過さ
せるので、レベルング性が悪い活性エネルギー線硬化型
塗料でも表面温度を上昇させることによりレベリング性
を促進させることができるので、さざ波が即座に消滅
し、従って、その後活性エネルギー線を照射して硬化さ
せた塗膜には細かいすじは一切見られず、外観不良を皆
無にすることができる。According to the spin coating method of the present invention, a fixed amount of the active energy ray-curable coating material is applied, and then the disk-shaped substrate is rotated by high-speed rotation to shake off the excess active energy ray-curable coating material. Before irradiation with active energy rays, it passes through the lower part of the flat plate heater parallel to the disk-shaped substrate, so even the active energy ray-curable coating with poor leveling property can promote the leveling property by raising the surface temperature. As a result, the ripples are immediately extinguished, and therefore fine lines are not seen in the coating film which is subsequently cured by irradiation with active energy rays, and the appearance defect can be completely eliminated.
【図１】スピンコート法により円盤状基板に活性エネル
ギー線硬化型塗料を塗布する場合の概念図であって、光
ディスクをターンテーブルに設置したときの側面図であ
る。FIG. 1 is a conceptual diagram when an active energy ray-curable coating material is applied to a disk-shaped substrate by a spin coating method, and is a side view when an optical disc is installed on a turntable.
【図２】紫外線硬化型塗料を塗布した後、高速回転によ
って余分な樹脂を振り切った時の塗布表面の状態を示し
た平面図である。FIG. 2 is a plan view showing a state of an applied surface when an excessive resin is shaken off by high speed rotation after applying an ultraviolet curable coating material.
【図３】実施例に記載の本発明による塗布方法により光
ディスクに保護コート剤を塗布する場合の概念図であ
る。FIG. 3 is a conceptual diagram in the case of applying a protective coating agent onto an optical disc by the coating method according to the present invention described in Examples.
【図４】スピンコート法により円盤状基板に塗料を塗布
する場合の概念図であって、実施例２及び比較例２に記
載したハードコート剤を塗布する場合の光ディスクをタ
ーンテーブルに設置したときの側面図である。FIG. 4 is a conceptual diagram in the case of applying a coating material to a disk-shaped substrate by a spin coating method, in which an optical disc in the case of applying the hard coating agent described in Example 2 and Comparative Example 2 is set on a turntable. FIG.
【図５】比較例に記載の従来方法による塗布方法によっ
て光ディスクに保護コート剤を塗布する場合の概念図で
ある。FIG. 5 is a conceptual diagram of a case where a protective coating agent is applied to an optical disc by a conventional coating method described in a comparative example.
１ 光ディスク ２ 記録膜 ３ ターンテーブル ４ 保護コート剤 ５ 塗料塗布用ノズル ６ 細かいさざ波状のすじ ７ ヒーター ８ 紫外線 1 Optical Disc 2 Recording Film 3 Turntable 4 Protective Coating Agent 5 Paint Coating Nozzle 6 Fine Rippled Lines 7 Heater 8 Ultraviolet
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 ＦＩ 技術表示箇所 // Ｇ０３Ｆ 7/16 ５０２ ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 5 Identification code Office reference number FI technical display area // G03F 7/16 502
Claims (3)
の活性エネルギー線硬化型塗料を円盤状基板に塗布する
第１工程、円盤状基板を高速回転させて基板上の余分な
塗料を振り切る第２工程及び円盤状基板上の未硬化の塗
膜に上方からヒーターにより加熱した後に活性エネルギ
ー線照射を行う第３工程を有することを特徴とする回転
塗布方法。1. A first step of applying a constant amount of active energy ray-curable coating material to a disk-shaped substrate while rotating the disk-shaped substrate at a low speed, and a step of rotating the disk-shaped substrate at a high speed to shake off excess coating material on the substrate. A spin coating method comprising two steps and a third step of heating an uncured coating film on a disk-shaped substrate from above with a heater and then irradiating with active energy rays.
基板と平行な位置から加熱することを特徴とする請求項
１記載の回転塗布方法。2. The spin coating method according to claim 1, wherein a flat heater is used and heating is performed from a position parallel to the disk substrate.
板が固定されたヒーターの下部を通過することにより加
熱することを特徴とする請求項１又は２記載の回転塗布
方法。3. The spin coating method according to claim 1, wherein a fixed heater is used, and the disk-shaped substrate is heated by passing under the fixed heater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14270792A JPH05337434A (en) | 1992-06-03 | 1992-06-03 | Rotary coating material applying method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14270792A JPH05337434A (en) | 1992-06-03 | 1992-06-03 | Rotary coating material applying method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05337434A true JPH05337434A (en) | 1993-12-21 |
Family
ID=15321703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14270792A Pending JPH05337434A (en) | 1992-06-03 | 1992-06-03 | Rotary coating material applying method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05337434A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005118159A1 (en) * | 2004-06-03 | 2005-12-15 | Shibaura Mechatronics Corporation | Resin layer forming method, resin layer forming apparatus, disc and disc manufacturing method |
-
1992
- 1992-06-03 JP JP14270792A patent/JPH05337434A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005118159A1 (en) * | 2004-06-03 | 2005-12-15 | Shibaura Mechatronics Corporation | Resin layer forming method, resin layer forming apparatus, disc and disc manufacturing method |
| US8088438B2 (en) | 2004-06-03 | 2012-01-03 | Shibaura Mechatronics Corporation | Resin layer formation method, resin layer formation device, and disk manufacturing method |
| US8220410B2 (en) | 2004-06-03 | 2012-07-17 | Shibaura Mechatronics Corporation | Resin layer formation method, resin layer formation device, disk, and disk manufacturing method |
| US8475870B2 (en) | 2004-06-03 | 2013-07-02 | Shibaura Mechatronics Corporation | Resin layer formation method, resin layer formation device, disk and disk manufacturing method |
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