JP6655039B2 - Coating apparatus and method for manufacturing coating film - Google Patents
Coating apparatus and method for manufacturing coating film Download PDFInfo
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- JP6655039B2 JP6655039B2 JP2017065487A JP2017065487A JP6655039B2 JP 6655039 B2 JP6655039 B2 JP 6655039B2 JP 2017065487 A JP2017065487 A JP 2017065487A JP 2017065487 A JP2017065487 A JP 2017065487A JP 6655039 B2 JP6655039 B2 JP 6655039B2
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
- B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
- B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
- B05C1/0808—Details thereof, e.g. surface characteristics
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
- B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
- B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
- B05C1/0813—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line characterised by means for supplying liquid or other fluent material to the roller
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
- B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
- B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
- B05C1/0856—Reverse coating rollers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
- B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
- B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
- B05C1/0873—Controlling means responsive to conditions of the liquid or other fluent material, of the ambient medium, of the roller or of the work
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
- B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
- B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
- B05C1/0873—Controlling means responsive to conditions of the liquid or other fluent material, of the ambient medium, of the roller or of the work
- B05C1/0895—Controlling means responsive to conditions of the liquid or other fluent material, of the ambient medium, of the roller or of the work responsive to the thickness of the weight of material applied to the work
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
- B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
- B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
- B05C1/12—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the work being fed round the roller
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C13/00—Means for manipulating or holding work, e.g. for separate articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/28—Processes for applying liquids or other fluent materials performed by transfer from the surfaces of elements carrying the liquid or other fluent material, e.g. brushes, pads, rollers
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- Application Of Or Painting With Fluid Materials (AREA)
- Coating Apparatus (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
Description
本発明は、塗工装置及び塗工膜の製造方法に関する。 The present invention relates to a coating apparatus and a method for manufacturing a coating film.
従来、塗工装置として、例えば、シート部材等の被塗工物に塗工液を塗工して塗工膜を形成する塗工ローラを備えたグラビア塗工装置が知られている。 2. Description of the Related Art Conventionally, as a coating apparatus, for example, a gravure coating apparatus including a coating roller that forms a coating film by applying a coating liquid to an object to be coated such as a sheet member is known.
この種のグラビア塗工装置は、外周面に凹部を有する円柱状の塗工ローラと、塗工ローラの外周面に塗工液を供給する供給部とを備える。該グラビア塗工装置は、塗工ローラの外周面に供給された塗工液を被塗工物に接触させつつ、塗工ローラを回転させることによって、塗工液を被塗工物に連続的に塗工するように構成されている。 This type of gravure coating apparatus includes a column-shaped coating roller having a concave portion on the outer peripheral surface, and a supply unit that supplies a coating liquid to the outer peripheral surface of the coating roller. The gravure coating device continuously rotates the coating roller by rotating the coating roller while contacting the coating liquid supplied to the outer peripheral surface of the coating roller with the coating object. It is constituted so that it may apply.
かかるグラビア塗工装置では、供給された塗工液が塗工ローラの外周面の凹部に入り込み、外周面の一部が被塗工物と接触しつつ塗工ローラが回転する。これにより、被塗工物と接触した外周部の塗工液が被塗工物に塗工される。また、かかるグラビア塗工装置では、塗工ローラの外周面から塗工液が被塗工物に転写されて塗工され、さらに塗工ローラが回転する。そして、凹部内に空隙ができた外周面へ、供給部から塗工液が供給される。 In such a gravure coating apparatus, the supplied coating liquid enters the concave portion of the outer peripheral surface of the coating roller, and the coating roller rotates while a part of the outer peripheral surface is in contact with the object to be coated. As a result, the coating liquid at the outer peripheral portion in contact with the object to be coated is applied to the object to be coated. In such a gravure coating apparatus, a coating liquid is transferred to an object to be coated from an outer peripheral surface of a coating roller and coated, and the coating roller further rotates. Then, the coating liquid is supplied from the supply unit to the outer peripheral surface in which a gap is formed in the concave portion.
このような塗工装置として、４５〜１５０ｍｍの外径を有する塗工ローラを備えたものが提案されている。かかる塗工装置によれば、塗工ローラの外径が小さい分、塗工ローラの凹部に塗工液が供給されてから被塗工物に転写されるまでの間で塗工液が外気に曝される時間が短くなるため、乾燥し易い塗工液を用いた場合であっても、塗工性能の低下を抑制することが可能となる（特許文献１参照）。 As such a coating device, a device provided with a coating roller having an outer diameter of 45 to 150 mm has been proposed. According to such a coating apparatus, the coating liquid is exposed to the air between the time when the coating liquid is supplied to the concave portion of the coating roller and the time when the coating liquid is transferred to the object to be coated, by the small outer diameter of the coating roller. Since the exposure time is shortened, it is possible to suppress a decrease in coating performance even when a coating liquid that is easy to dry is used (see Patent Document 1).
また、上記のような塗工装置として、４０〜５５ｍｍの外径を有する塗工ローラと、該塗工ローラの凹部に塗工液を供給する供給部とを備え、該供給部が、塗工ローラの回転方向下流側で塗工液をシールしつつ塗工ローラに付着した余分な塗工液を除去するドクターブレードと、塗工ローラの回転方向上流側で塗工液をシールするシールプレートとを有しするものが提案されている。かかる塗工装置によれば、塗工ローラの外径が小さくても、塗工ローラによって塗工液を被塗工物に均一に塗工することが可能となる（特許文献２参照）。 Further, the coating apparatus as described above includes a coating roller having an outer diameter of 40 to 55 mm, and a supply unit that supplies a coating liquid to a concave portion of the coating roller. A doctor blade that seals the coating liquid downstream of the roller in the rotation direction and removes excess coating liquid adhering to the coating roller, and a seal plate that seals the coating liquid upstream in the rotation direction of the coating roller. Have been proposed. According to such a coating apparatus, even if the outer diameter of the coating roller is small, the coating roller can uniformly apply the coating liquid to the object to be coated (see Patent Document 2).
しかし、特許文献１、２に記載された塗工装置では、塗工された塗工液（すなわち、塗工膜）にスジやムラといった塗工不良が発生する場合があり、十分に安定して塗工を行い得るとはいい難い。また、かかる塗工不良を抑制しようとすると、狭い範囲で塗工条件を設定する必要が生じてしまう。
一方、被塗工物が塗工ローラに送られるまでの間に、該被塗工物に異物が付着している場合があり、このように異物が付着した状態で塗工が行われると、塗工液に異物が混入され、品質が低下した塗工物が得られることになる。そこで、このような異物は、除去されることが望ましい。
However, in the coating apparatuses described in Patent Literatures 1 and 2, coating defects such as streaks and unevenness may occur in a coated coating liquid (that is, a coating film), and the coating liquid is sufficiently stable. It is hard to be able to do the coating. Further, in order to suppress such coating defects, it is necessary to set the coating conditions in a narrow range.
On the other hand, during the time until the object to be coated is sent to the coating roller, foreign matter may be attached to the object to be coated, and when the coating is performed in a state where the foreign matter is attached, Foreign matter is mixed in the coating liquid, and a coated product with reduced quality is obtained. Therefore, it is desirable that such foreign matter be removed.
本発明は、上記事情に鑑み、塗工不良を抑制しながら塗工液を被塗工物に塗工することができ、しかも、塗工によって異物の除去をも可能とする塗工装置及び塗工膜の製造方法を提供することを課題とする。 In view of the above circumstances, the present invention provides a coating apparatus and a coating apparatus that can apply a coating liquid to an object to be coated while suppressing coating defects, and that can also remove foreign substances by coating. An object of the present invention is to provide a method for manufacturing a coated film.
上記課題を解決すべく本発明者から鋭意研究したところ、グラビア塗工においては、被塗工物上の塗工液（塗膜）と塗工ローラ上の塗工液（塗膜）との間（塗工ローラ上の塗工液が被塗工物に転写される直前の側）、もしくは、被塗工物と塗工ローラとの間（塗工ローラ上の塗工液が被塗工物に転写された直後の側）に、空気が巻き込まれることを見出した（図３参照）。さらに、塗工ローラの回転速度の大きさと被塗工物の移動速度の大きさとの差が大きくなるにつれ、巻き込まれる空気の量が増加し、塗工ローラに対して被塗工物が浮き上がった状態になり、塗工ローラと被塗工物との間に塗工液のビードが形成されず、その結果、塗工不良が発生することを見出した。 The inventors of the present invention have conducted intensive studies to solve the above problems, and found that, in gravure coating, the coating liquid (coating film) on the object to be coated and the coating liquid (coating film) on the coating roller. (The side immediately before the coating liquid on the coating roller is transferred to the coating object) or between the coating object and the coating roller (the coating liquid on the coating roller is Was found to be trapped in air (see FIG. 3). Further, as the difference between the magnitude of the rotation speed of the coating roller and the magnitude of the moving speed of the workpiece increases, the amount of air entrained increases, and the workpiece floats with respect to the coating roller. It was found that no bead of the coating liquid was formed between the coating roller and the object to be coated, resulting in poor coating.
また、塗工ローラの外径が比較的大きい場合には、被塗工物の移動速度の大きさに対する塗工ローラの回転速度の大きさの差の数値範囲を比較的狭くしないと、塗工ローラ上の塗工液が被塗工物に転写される際に、上記のように巻き込まれる空気の量を抑制することが困難となり、ビードの十分な形成が阻害されて、塗工不良が発生する傾向にあることを見出した。一方、塗工ローラが比較的小さい場合には、上記差の数値範囲が比較的広くても、上記のように巻き込まれる空気の量を抑制することができ、ビードが十分に形成されて、塗工不良の発生を抑制し得る傾向にあることを見出した。 Also, when the outer diameter of the coating roller is relatively large, the numerical range of the difference between the magnitude of the rotation speed of the coating roller and the magnitude of the moving speed of the object to be coated must be relatively narrow, unless the coating range is relatively small. When the coating liquid on the roller is transferred to the object to be coated, it becomes difficult to suppress the amount of air entrained as described above, and sufficient formation of beads is hindered, and coating defects occur. I found that there was a tendency. On the other hand, when the coating roller is relatively small, even if the numerical range of the difference is relatively wide, the amount of air entrained as described above can be suppressed, and the beads are sufficiently formed, It has been found that there is a tendency that the occurrence of engineering defects can be suppressed.
そして、塗工ローラの外径が６０〜８０ｍｍである場合には、上記差が０〜６０ｍ／分と広い範囲であっても、塗工液に対する空気の同伴を抑制して塗工不良を抑制し得ることを見出した。 When the outer diameter of the coating roller is 60 to 80 mm, even if the difference is as wide as 0 to 60 m / min, air entrainment of the coating liquid is suppressed and coating defects are suppressed. I found that I could do it.
さらに、塗工ローラの外径及び上記速度の差が上記範囲である場合には、塗工液によって被塗工物にビードが十分に形成され、被塗工物が浮き上がることが抑制されるため、被塗工物と塗工液とが十分に接触し、また、その接触の際に塗工ローラと被塗工物との速度差によって被塗工物と塗工液との間に摩擦が発生し、この摩擦によって、塗工される前の被塗工物の塗工される側の面に異物が付着していても、該異物が除去され得ることを見出して、本発明を完成するに至った。 Further, when the difference between the outer diameter of the coating roller and the above speed is in the above range, a bead is sufficiently formed on the object to be coated by the coating liquid, so that the object to be coated is prevented from floating. When the contact between the coating material and the coating liquid is sufficient, the speed difference between the coating roller and the coating material causes friction between the coating material and the coating liquid during the contact. Generated, by this friction, even if foreign matter adheres to the surface on the side to be coated of the object to be coated before being coated, it is found that the foreign matter can be removed, and the present invention is completed. Reached.
すなわち、本発明に係る塗工装置は、
相対的に移動する被塗工物に塗工液を塗工する塗工ローラであって、外周面に凹部を有する塗工ローラと、
チャンバーを有し前記塗工ローラの外周面の少なくとも前記凹部に前記チャンバー内の前記塗工液を供給する供給部とを備え、
前記被塗工物の移動方向と反対の方向に前記塗工ローラを回転させつつ、前記凹部に供給された塗工液を前記被塗工物に接触させることにより、前記塗工液を前記被塗工物に塗工して塗工膜を形成するように構成され、
前記塗工ローラの外径は、６０〜８０ｍｍであり、
前記塗工ローラの回転速度の大きさと前記被塗工物の移動速度の大きさとの差が、０〜６０ｍ／分であるように構成されている。
That is, the coating device according to the present invention,
A coating roller that applies a coating liquid to an object that moves relatively, a coating roller having a concave portion on an outer peripheral surface,
A supply unit that has a chamber and supplies the coating liquid in the chamber to at least the concave portion of the outer peripheral surface of the coating roller,
By rotating the coating roller in a direction opposite to the moving direction of the object to be coated and bringing the coating liquid supplied to the concave portion into contact with the object to be coated, the coating liquid is applied to the object to be coated. It is configured to apply to the coating to form a coating film,
The outer diameter of the coating roller is 60 to 80 mm,
The difference between the magnitude of the rotation speed of the coating roller and the magnitude of the moving speed of the object to be coated is configured to be 0 to 60 m / min.
ここで、塗工ローラの回転速度とは、塗工ローラの外周面の移動速度を意味する。 Here, the rotation speed of the coating roller means the moving speed of the outer peripheral surface of the coating roller.
かかる構成によれば、塗工ローラの外径が６０〜８０ｍｍであり、被塗工物の移動速度の絶対値に対する前記塗工ローラの回転速度の絶対値の差が、０〜６０ｍ／分であることによって、被塗工物上の塗工液（塗膜）と塗工ローラ上の塗工液（塗膜）との間、もしくは、被塗工物と塗工ローラとの間に、被塗工物の移動及び塗工ローラの回転に伴って巻き込まれる空気の量が抑制され、塗工ローラと被塗工物との接触状態（位置関係）が安定する。このように、不要な空気を巻き込みつつ塗工液が被塗工物に塗工されることを抑制し得るため、塗工ローラと被塗工物との間に十分な塗工液のビードを形成することができ、このビードの形成によって、上記不要な空気の巻き込みに起因する塗工不良を抑制し得る。
また、上記ビードが十分に形成された状態で被塗工物と塗工ローラとが互いに反対の方向に移動することによって、被塗工物と塗工液との間に摩擦を発生させることができ、この摩擦によって、被塗工物に付着した異物を除去することが可能となる。
従って、塗工不良を抑制しながら塗工液を被塗工物に塗工することができ、しかも、塗工によって異物の除去をも可能となる。
According to this configuration, the outer diameter of the coating roller is 60 to 80 mm, and the difference between the absolute value of the moving speed of the object to be coated and the absolute value of the rotation speed of the coating roller is 0 to 60 m / min. Depending on the situation, the coating liquid (coating film) on the coating object and the coating liquid (coating film) on the coating roller, or between the coating object and the coating roller, The amount of air entrained by the movement of the coating object and the rotation of the coating roller is suppressed, and the contact state (positional relationship) between the coating roller and the object to be coated is stabilized. In this way, it is possible to suppress the coating liquid from being applied to the object to be coated while entraining unnecessary air, so that a sufficient bead of the coating liquid is applied between the coating roller and the object to be coated. The beads can be formed, and the formation of the beads can suppress the coating failure caused by the entrainment of the unnecessary air.
Further, by moving the object to be coated and the coating roller in directions opposite to each other in a state where the beads are sufficiently formed, it is possible to generate friction between the object to be coated and the coating liquid. The friction makes it possible to remove foreign substances adhering to the object to be coated.
Therefore, it is possible to apply the coating liquid to the object to be coated while suppressing coating defects, and it is also possible to remove foreign substances by coating.
上記構成の塗工装置においては、
前記被塗工物の移動方向における前記塗工液が塗工される位置よりも下流側の前記被塗工物の張力が、５０〜１０００Ｎ／ｍであってもよい。
In the coating apparatus having the above configuration,
The tension of the object to be coated on the downstream side of the position where the application liquid is applied in the moving direction of the object to be coated may be 50 to 1000 N / m.
かかる構成によれば、上記下流側の被塗工物の張力が５０〜１０００Ｎ／ｍであることによって、上記塗工液に対する空気の同伴をより抑制することができる。これによって、より十分に上記ビードを形成することができるため、より塗工不良を抑制することができ、また、より異物を除去することが可能となる。 According to this configuration, the entrainment of air with the coating liquid can be further suppressed by setting the tension of the coating object on the downstream side to 50 to 1000 N / m. As a result, the beads can be formed more sufficiently, so that coating defects can be further suppressed, and foreign substances can be further removed.
上記構成の塗工装置においては、
前記被塗工物の厚みが、１０〜７０μｍであってもよい。
In the coating apparatus having the above configuration,
The thickness of the object to be coated may be 10 to 70 μm.
かかる構成によれば、被塗工物の厚みが１０〜７０μｍであることによって、上記塗工液に対する空気の同伴をより抑制することができる。これによって、より十分に上記ビードを形成することができるため、より塗工不良を抑制することができ、また、より異物を除去することが可能となる。 According to this configuration, when the thickness of the object to be coated is 10 to 70 μm, entrainment of air with the coating liquid can be further suppressed. As a result, the beads can be formed more sufficiently, so that coating defects can be further suppressed, and foreign substances can be further removed.
上記構成の塗工装置においては、
前記塗工液の粘度が、０．５〜５０ｍＰａ・ｓであってもよい。
In the coating apparatus having the above configuration,
The viscosity of the coating liquid may be 0.5 to 50 mPa · s.
かかる構成によれば、塗工液の粘度が０．５〜５０ｍＰａ・ｓであることによって、上記塗工液に対する空気の同伴をより抑制することができる。これによって、より十分に上記ビードを形成することができるため、より塗工不良を抑制することができ、また、より異物を除去することが可能となる。 According to this configuration, when the viscosity of the coating liquid is 0.5 to 50 mPa · s, entrainment of air with the coating liquid can be further suppressed. As a result, the beads can be formed more sufficiently, so that coating defects can be further suppressed, and foreign substances can be further removed.
本発明に係る塗工膜の製造方法は、
相対的に移動する被塗工物に塗工液を塗工する塗工ローラであって、外周面に凹部を有する塗工ローラを前記被塗工物の移動方向と反対の方向に回転させつつ、前記凹部に供給された塗工液を前記被塗工物に接触させることにより、前記塗工液を前記被塗工物に塗工して塗工膜を形成する塗工工程を備え、
前記塗工工程は、
チャンバーを有し前記塗工ローラの外周面の少なくとも前記凹部に前記チャンバー内の前記塗工液を供給する供給部を用い、前記塗工ローラの外周面の少なくとも前記凹部に、前記チャンバー内の前記塗工液を供給する供給工程を有し、
前記塗工ローラの外径は、６０〜８０ｍｍであり、
前記塗工ローラの回転速度の大きさと前記被塗工物の移動速度の大きさとの差を０〜６０ｍ／分とする、方法である。
The method for producing a coating film according to the present invention,
A coating roller that applies a coating liquid to a relatively moving workpiece, while rotating a coating roller having a concave portion on an outer peripheral surface in a direction opposite to a moving direction of the workpiece. A coating step of forming a coating film by applying the coating liquid to the coating object by contacting the coating liquid supplied to the concave portion with the coating object,
The coating step includes:
A supply unit having a chamber and supplying the coating liquid in the chamber to at least the concave portion of the outer peripheral surface of the coating roller, and at least the concave portion of the outer peripheral surface of the coating roller, Having a supply step of supplying a coating liquid,
The outer diameter of the coating roller is 60 to 80 mm,
A method in which the difference between the magnitude of the rotation speed of the coating roller and the magnitude of the moving speed of the object to be coated is 0 to 60 m / min.
ここで、前述と同様、塗工ローラの回転速度とは、塗工ローラの外周面の移動速度を意味する。 Here, as described above, the rotation speed of the coating roller means the moving speed of the outer peripheral surface of the coating roller.
かかる構成によれば、前述の通り、塗工ローラの外径が６０〜８０ｍｍであり、被塗工物の移動速度の絶対値に対する前記塗工ローラの回転速度の絶対値の差を、０〜６０ｍ／分とすることによって、塗工ローラと被塗工物との間に十分な塗工液のビードを形成することができ、このビードの形成によって、上記空気の同伴に起因する塗工不良を抑制し得る。
また、上記ビードが十分に形成された状態で被塗工物と塗工ローラとが互いに反対の方向に移動することによって、被塗工物と塗工液との間に摩擦を発生させることができ、この摩擦によって、被塗工物に付着した異物を除去することが可能となる。
従って、塗工不良を抑制しながら塗工液を被塗工物に塗工することができ、しかも、塗工によって異物の除去をも可能となる。
According to this configuration, as described above, the outer diameter of the coating roller is 60 to 80 mm, and the difference between the absolute value of the rotation speed of the coating roller and the absolute value of the moving speed of the object to be coated is 0 to 0. By setting the speed to 60 m / min, it is possible to form a sufficient bead of the coating liquid between the coating roller and the object to be coated, and due to the formation of the bead, coating defects caused by the entrainment of the air. Can be suppressed.
Further, by moving the object to be coated and the coating roller in directions opposite to each other in a state where the beads are sufficiently formed, it is possible to generate friction between the object to be coated and the coating liquid. The friction makes it possible to remove foreign substances adhering to the object to be coated.
Therefore, it is possible to apply the coating liquid to the object to be coated while suppressing coating defects, and it is also possible to remove foreign substances by coating.
以上の通り、本発明によれば、塗工不良を抑制しながら塗工液を被塗工物に塗工することができ、しかも、塗工によって異物の除去をも可能とする塗工装置、及び、塗工膜の製造方法が提供される。 As described above, according to the present invention, it is possible to apply a coating liquid to an object to be coated while suppressing coating defects, and further, a coating apparatus capable of removing foreign substances by coating. Further, a method for producing a coating film is provided.
以下、本発明の実施形態に係る塗工装置について、図面を参照しながら説明する。本実施形態では、被塗工物５０としてシート部材５０を採用した例について説明するが、被塗工物５０は、シート部材５０に限定されるものではない。 Hereinafter, a coating device according to an embodiment of the present invention will be described with reference to the drawings. In the present embodiment, an example in which the sheet member 50 is adopted as the object to be coated 50 will be described. However, the object to be coated 50 is not limited to the sheet member 50.
本実施形態の塗工装置１は、図１、図２に示すように、被塗工物５０に塗工液３０を塗工して塗工膜４０を形成する塗工ローラ２であって外周面に凹部２ａを有する塗工ローラ２と、チャンバーを有し塗工ローラ２の外周面の少なくとも凹部２ａにチャンバー内の塗工液３０を供給する供給部３とを備える。
本実施形態の塗工装置１は、被塗工物５０の移動方向と反対の方向に塗工ローラ２を回転させつつ、凹部２ａに供給された塗工液３０を被塗工物５０に接触させることにより、塗工液３０を被塗工物５０に塗工して塗工膜４０を形成するように構成されている。上記のような塗工ローラ２を備えた塗工装置１は、一般的に、グラビア塗工装置と称される。
As shown in FIGS. 1 and 2, the coating apparatus 1 of the present embodiment is a coating roller 2 that forms a coating film 40 by coating a coating object 30 with a coating liquid 30. The coating roller 2 includes a coating roller 2 having a concave portion 2a on its surface, and a supply unit 3 having a chamber and supplying the coating liquid 30 in the chamber to at least the concave portion 2a on the outer peripheral surface of the coating roller 2.
The coating apparatus 1 according to the present embodiment contacts the coating liquid 30 supplied to the concave portion 2a with the coating liquid 50 while rotating the coating roller 2 in a direction opposite to the moving direction of the coating target 50. By doing so, the coating liquid 30 is applied to the workpiece 50 to form the coating film 40. The coating device 1 including the coating roller 2 as described above is generally called a gravure coating device.
また、本実施形態の塗工装置１においては、供給部３が、塗工ローラ２の回転方向下流側に、塗工ローラ２の外周面に供給された塗工液３０のうち凹部２ａ外の塗工液３０を除去する第１のブレード部材６を備える。
さらに、本実施形態の塗工装置１においては、供給部３が、塗工ローラの回転方向上流側に、供給部３から塗工液３０が漏れないようにシールする第２のブレード部材８を備える。
In addition, in the coating apparatus 1 of the present embodiment, the supply unit 3 is provided on the downstream side in the rotation direction of the coating roller 2, of the coating liquid 30 supplied to the outer peripheral surface of the coating roller 2, outside the concave portion 2 a. The first blade member 6 for removing the coating liquid 30 is provided.
Furthermore, in the coating device 1 of the present embodiment, the supply unit 3 includes the second blade member 8 that seals the coating liquid 30 from the supply unit 3 so as not to leak from the supply unit 3 on the upstream side in the rotation direction of the coating roller. Prepare.
本実施形態の塗工装置１は、供給部３にて塗工液３０を塗工ローラ２の外周面に供給し、外周面に供給された塗工液３０のうち凹部２ａ外の塗工液３０を第１のブレード部材６によって除去するように構成されている。また、本実施形態の塗工装置１は、供給部３に対してシート部材５０を相対的に所定方向に移動させるように構成されている。また、本実施形態の塗工装置１は、塗工ローラ２を一方向に回転させながら、塗工ローラ２の外周面に供給された塗工液３０の一部を、被塗工物５０としてのシート部材５０に接触させつつ、凹部２ａ内の塗工液３０をシート部材５０に連続的に塗工するように構成されている。また、塗工ローラ２の回転方向と、シート部材５０の移動方向とが、塗工部分にて反対方向となるように構成されている。 In the coating apparatus 1 of the present embodiment, the supply unit 3 supplies the coating liquid 30 to the outer peripheral surface of the coating roller 2, and of the coating liquid 30 supplied to the outer peripheral surface, the coating liquid outside the recess 2 a. 30 is configured to be removed by the first blade member 6. Further, the coating apparatus 1 of the present embodiment is configured to move the sheet member 50 relatively in the predetermined direction with respect to the supply unit 3. In addition, the coating apparatus 1 of the present embodiment converts a part of the coating liquid 30 supplied to the outer peripheral surface of the coating roller 2 as the workpiece 50 while rotating the coating roller 2 in one direction. The coating liquid 30 in the concave portion 2 a is continuously applied to the sheet member 50 while being in contact with the sheet member 50. Further, the rotating direction of the coating roller 2 and the moving direction of the sheet member 50 are configured to be opposite directions at the coated portion.
前記塗工液３０は、通常、シート部材５０に塗工されたあとに、該シート部材５０上で固化して塗工膜４０となるものである。塗工液３０としては、例えば硬化するポリマー材料を含む溶液が挙げられる。硬化するポリマー材料としては、熱硬化性材料、紫外線硬化性材料、電子線硬化性材料等が挙げられる。これらのうち、上記ポリマー材料は、紫外線硬化性材料が好ましい。
なお、塗工とは、印刷やコーティングを含むものである。
Usually, the coating liquid 30 is applied to the sheet member 50 and then solidifies on the sheet member 50 to form the coating film 40. The coating liquid 30 includes, for example, a solution containing a polymer material that cures. Examples of the curable polymer material include a thermosetting material, an ultraviolet curable material, and an electron beam curable material. Among these, the polymer material is preferably an ultraviolet curable material.
The coating includes printing and coating.
前記塗工液３０の粘度は、特に限定されないが、０．５〜５０ｍＰａ・ｓが好ましく、１０〜５０ｍＰａ・ｓがより好ましい。
塗工液３０の粘度が０．５〜５０ｍＰａ・ｓであることによって、塗工液３０に対する空気の同伴をより抑制することができる。これによって、より十分にシート部材５０と塗工ローラ２との間に塗工液３０のビードを形成することができるため、より塗工不良を抑制することができ、また、より異物を除去することが可能となる。
なお、塗工液３０の粘度は、レオメータ（型式ＲＳ１、ＨＡＡＫＥ社製）を用い、２０℃にて、せん断速度１（１／ｓ）の条件で測定した値である。
The viscosity of the coating liquid 30 is not particularly limited, but is preferably 0.5 to 50 mPa · s, and more preferably 10 to 50 mPa · s.
When the viscosity of the coating liquid 30 is 0.5 to 50 mPa · s, entrainment of air with the coating liquid 30 can be further suppressed. Thereby, a bead of the coating liquid 30 can be more sufficiently formed between the sheet member 50 and the coating roller 2, so that coating defects can be further suppressed and foreign substances can be further removed. It becomes possible.
The viscosity of the coating liquid 30 is a value measured using a rheometer (model RS1, manufactured by HAAKE) at 20 ° C. under the condition of a shear rate of 1 (1 / s).
シート部材５０は、通常、帯状に形成されている。シート部材５０としては、例えば、樹脂フィルムが挙げられる。 The sheet member 50 is usually formed in a belt shape. Examples of the sheet member 50 include a resin film.
前記シート部材５０の幅は、通常、塗工ローラ２の回転軸方向の長さよりも短い。 The width of the sheet member 50 is generally shorter than the length of the coating roller 2 in the rotation axis direction.
シート部材５０の厚みは、特に限定されないが、例えば、５〜８０μｍ程度であり、１０〜７０μｍが好ましい。 The thickness of the sheet member 50 is not particularly limited, but is, for example, about 5 to 80 μm, and preferably 10 to 70 μm.
前記塗工ローラ２は、円柱状に形成されている。塗工ローラ２は、円柱軸を回転軸として回転するように構成されている。 The coating roller 2 is formed in a column shape. The coating roller 2 is configured to rotate around a cylindrical axis as a rotation axis.
前記塗工ローラ２は、外周面に供給された塗工液３０の一部がシート部材５０の一部と接触するように配置されている。そして、塗工ローラ２は、少なくとも１回転することによって、外周面上の塗工液が周方向に沿ってシート部材５０と接触するように構成されている。 The coating roller 2 is arranged such that a part of the coating liquid 30 supplied to the outer peripheral surface contacts a part of the sheet member 50. The coating roller 2 is configured such that the coating liquid on the outer peripheral surface contacts the sheet member 50 along the circumferential direction by at least one rotation.
前記塗工ローラ２の外周面は、円柱状の塗工ローラ２の円柱軸方向の一方側から見て円周に沿って配された周囲面部２ｂと、周囲面部２ｂよりも内側に窪んだ凹部２ａとを有する。 An outer peripheral surface of the coating roller 2 has a peripheral surface portion 2b disposed along the circumference as viewed from one side in the column axis direction of the cylindrical coating roller 2, and a concave portion recessed inward from the peripheral surface portion 2b. 2a.
前記凹部２ａは、塗工ローラ２の外周面に複数形成されている。また、凹部２ａは、塗工ローラ２の外周面の全体にわたって多数形成されている。 A plurality of the concave portions 2 a are formed on the outer peripheral surface of the coating roller 2. Further, a large number of concave portions 2 a are formed over the entire outer peripheral surface of the coating roller 2.
本実施形態の塗工装置１においては、凹部２ａのパターン形状は、特に限定されず、例えば、線状（互いに交差しない（例えば平行の複数の線状の溝）、または、ハニカム状（互いに交差する複数の線状の溝）等が挙げられる。
また、かかる線状またはハニカム状の凹部２ａが、１００〜２５００線／インチであるように形成されていてもよい。
In the coating device 1 of the present embodiment, the pattern shape of the concave portion 2a is not particularly limited, and is, for example, linear (a plurality of parallel linear grooves that do not intersect each other) or honeycomb (intersecting each other). A plurality of linear grooves).
Further, the linear or honeycomb-shaped concave portion 2a may be formed to have 100 to 2500 lines / inch.
塗工ローラ２の外径は、６０〜８０ｍｍである。なお、かかる外径は、塗工ローラ２の最外周の直径である。
塗工ローラ２の外径が６０〜８０ｍｍであることによって、シート部材５０の移動速度Ｖｍに対する塗工ローラ２の回転速度Ｖｒの差（Ｖｒ−Ｖｍ）が、０〜６０ｍ／分であることと相俟って、塗工ローラ２の回転に伴って塗工液３０が空気を同伴した状態でシート部材５０に接触することを抑制し得る。これによって、塗工液３０とシート部材５０との間に空気が介在しながら塗工液３０がシート部材５０に塗工されることを抑制し得るため、塗工ローラ２とシート部材５０との間に十分な塗工液３０のビードを形成することができる。
塗工ローラ２の長手方向の長さ（幅）は、特に限定されるものではないが、例えば、５００〜２５００ｍｍである。
The outer diameter of the coating roller 2 is 60 to 80 mm. The outer diameter is the diameter of the outermost periphery of the coating roller 2.
When the outer diameter of the coating roller 2 is 60 to 80 mm, the difference (Vr−Vm) between the rotation speed Vr of the coating roller 2 and the moving speed Vm of the sheet member 50 is 0 to 60 m / min. Together with this, it is possible to suppress the coating liquid 30 coming into contact with the sheet member 50 in a state where air is entrained with the rotation of the coating roller 2. Thereby, the coating liquid 30 can be prevented from being applied to the sheet member 50 while air is interposed between the coating liquid 30 and the sheet member 50. A sufficient bead of the coating liquid 30 can be formed in between.
The length (width) of the coating roller 2 in the longitudinal direction is not particularly limited, but is, for example, 500 to 2500 mm.
塗工ローラ２の回転速度の大きさＶｒとシート部材５０の速度の大きさ（Ｖｍとの差とは、塗工ローラ２の回転速度の大きさ（絶対値）Ｖｒからシート部材５０の速度の大きさ（絶対値）Ｖｍを引いた差であり、この差が、０〜６０ｍ／分（Ｖ＝Ｖｒ−Ｖｍ）である。
上記差Ｖが、０〜６０ｍ／分であることによって、塗工ローラ２の外径が６０〜８０ｍｍであることと相俟って、シート部材５０上の塗工液３０（塗膜）と塗工ローラ２上の塗工液３０（塗膜）との間、もしくは、シート部材５０と塗工ローラ２との間に、シート部材５０の移動及び塗工ローラ２の回転に伴って巻き込まれる空気（図３参照）の量が抑制され、塗工ローラ２とシート部材５０との接触状態（位置関係）が安定する。このように、不要な空気を巻き込みつつ塗工液３０がシート部材５０に塗工されることを抑制し得るため、塗工ローラ２とシート部材５０との間に十分な塗工液３０のビードを形成することができる。
シート部材５０の移動速度は、例えば、５〜１００ｍ／分である。シート部材５０は、例えば、搬送装置（不図示）等によって搬送され、この場合には、搬送速度が移動速度に相当する。
The difference between the magnitude Vr of the rotation speed of the coating roller 2 and the magnitude (Vm) of the speed of the sheet member 50 is determined from the magnitude (absolute value) Vr of the rotation speed of the coating roller 2 and the speed of the sheet member 50. This is a difference obtained by subtracting the magnitude (absolute value) Vm, and this difference is 0 to 60 m / min (V = Vr-Vm).
When the difference V is in the range of 0 to 60 m / min, the outer diameter of the coating roller 2 is in the range of 60 to 80 mm. Air that is caught between the coating liquid 30 (coating film) on the processing roller 2 or between the sheet member 50 and the coating roller 2 as the sheet member 50 moves and the coating roller 2 rotates. (See FIG. 3) is suppressed, and the contact state (positional relationship) between the coating roller 2 and the sheet member 50 is stabilized. As described above, since the coating liquid 30 can be prevented from being applied to the sheet member 50 while entraining unnecessary air, a sufficient bead of the coating liquid 30 is provided between the coating roller 2 and the sheet member 50. Can be formed.
The moving speed of the sheet member 50 is, for example, 5 to 100 m / min. The sheet member 50 is conveyed by, for example, a conveying device (not shown) or the like. In this case, the conveying speed corresponds to the moving speed.
本実施形態の塗工装置１は、シート部材５０が塗工ローラ２の外周面に押圧されるように構成されている。 The coating device 1 of the present embodiment is configured such that the sheet member 50 is pressed against the outer peripheral surface of the coating roller 2.
本実施形態の塗工装置１においては、シート部材５０の張力は、特に限定されるものではない。例えば、シート部材５０の移動方向における塗工液３０が塗工される位置よりも下流側のシート部材の張力が、５０〜１０００Ｎ／ｍであることが好ましく、１００〜５００Ｎ／ｍであることが好ましい。
上記下流側のシート部材５０の張力が５０〜１０００Ｎ／ｍであることによって、塗工液３０に対する空気の同伴をより抑制することができる。これによって、より十分にシート部材５０と塗工ローラ２との間に塗工液３０のビードを形成することができるため、より塗工不良を抑制することができ、また、より異物を除去することが可能となる。
In the coating device 1 of the present embodiment, the tension of the sheet member 50 is not particularly limited. For example, the tension of the sheet member downstream of the position where the coating liquid 30 is applied in the moving direction of the sheet member 50 is preferably 50 to 1000 N / m, and more preferably 100 to 500 N / m. preferable.
When the tension of the downstream sheet member 50 is 50 to 1000 N / m, entrainment of air with the coating liquid 30 can be further suppressed. Thereby, a bead of the coating liquid 30 can be more sufficiently formed between the sheet member 50 and the coating roller 2, so that coating defects can be further suppressed and foreign substances can be further removed. It becomes possible.
前記供給部３は、内部に貯めた塗工液３０を塗工ローラ２の外周面に供給するチャンバー３ａと、チャンバー３ａに塗工液３０を流入させる流入経路３ｂと、チャンバー３ａから塗工液３０を流出させる流出経路３ｃと、流出経路３ｃを経て流出した塗工液３０を流入経路３ｂに送って循環させるための循環用タンク３ｄとを有する。 The supply unit 3 includes a chamber 3a for supplying the coating liquid 30 stored therein to the outer peripheral surface of the coating roller 2, an inflow path 3b for flowing the coating liquid 30 into the chamber 3a, and a coating liquid from the chamber 3a. It has an outflow path 3c for allowing the outflow 30 to flow out, and a circulation tank 3d for sending and circulating the coating liquid 30 flowing out through the outflow path 3c to the inflow path 3b.
前記チャンバー３ａは、塗工ローラ２の外周面に、塗工液３０を供給するように構成されている。
前記チャンバー３ａは、塗工液３０の供給先側が開口した中空形状に形成され、該開口が塗工ローラ２によって塞がれている。前記チャンバー３ａは、内部空間を塗工液３０で充たしつつ、上記開口から塗工ローラ２の外周面に塗工液３０を供給するように構成されている。即ち、前記チャンバー３ａは、一般的にクローズドチャンバーと称されるものである。
前記チャンバー３ａは、塗工液３０がシート部材５０に塗工される部分よりも後方側に配置されている。また、チャンバー３ａは、上記の開口が塗工ローラ２の外周面に沿うように配置されている。
The chamber 3 a is configured to supply a coating liquid 30 to the outer peripheral surface of the coating roller 2.
The chamber 3 a is formed in a hollow shape in which the supply destination side of the coating liquid 30 is opened, and the opening is closed by the coating roller 2. The chamber 3a is configured to supply the coating liquid 30 to the outer peripheral surface of the coating roller 2 from the opening while filling the inner space with the coating liquid 30. That is, the chamber 3a is generally called a closed chamber.
The chamber 3 a is disposed on the rear side of a portion where the coating liquid 30 is applied to the sheet member 50. The chamber 3 a is arranged so that the above-mentioned opening is along the outer peripheral surface of the coating roller 2.
前記チャンバー３ａは、流入経路３ｂから流入した塗工液３０を貯めるように構成されている。また、チャンバー３ａは、塗工液３０が漏れ出ないように、塗工ローラ２の外周面と近接する部分に、第２のブレード部材８を有する。チャンバー３ａは、第２のブレード部材８により、塗工液３０が漏れ出すことを抑えつつ、内部に貯めた塗工液３０の一部を塗工ローラ２の外周面に供給するように構成されている。 The chamber 3a is configured to store the coating liquid 30 flowing from the inflow path 3b. Further, the chamber 3a has a second blade member 8 at a portion close to the outer peripheral surface of the coating roller 2 so that the coating liquid 30 does not leak. The chamber 3 a is configured to supply a part of the coating liquid 30 stored inside to the outer peripheral surface of the coating roller 2 while suppressing the leakage of the coating liquid 30 by the second blade member 8. ing.
前記流入経路３ｂは、一方側が循環用タンク３ｄとつながり、他方側がチャンバー３ａとつながっている。流入経路３ｂは、塗工液３０を送るためのポンプＰを有する。流入経路３ｂは、ポンプＰによって送液された塗工液３０を循環用タンク３ｄからチャンバー３ａに送るように構成されている。
前記ポンプＰとしては、例えば、ギアポンプ、ダイアフラムポンプ、プランジャーポンプ、スネークポンプ、といった従来公知のポンプが挙げられる。
The inflow path 3b has one side connected to the circulation tank 3d and the other side connected to the chamber 3a. The inflow path 3b has a pump P for sending the coating liquid 30. The inflow path 3b is configured to send the coating liquid 30 sent by the pump P from the circulation tank 3d to the chamber 3a.
Examples of the pump P include conventionally known pumps such as a gear pump, a diaphragm pump, a plunger pump, and a snake pump.
前記流出経路３ｃは、一方側がチャンバー３ａとつながり、他方側が循環用タンク３ｄとつながっている。流出経路３ｃは、チャンバー３ａから循環用タンク３ｄへ塗工液３０を送るように構成されている。 The outflow path 3c has one side connected to the chamber 3a and the other side connected to the circulation tank 3d. The outflow path 3c is configured to send the coating liquid 30 from the chamber 3a to the circulation tank 3d.
前記循環用タンク３ｄは、流出経路３ｃを経て送られてきた塗工液３０を一時的に貯めるように構成されている。 The circulation tank 3d is configured to temporarily store the coating liquid 30 sent through the outflow path 3c.
前記供給部３は、流入経路３ｂから流入した塗工液３０をチャンバー３ａに貯め、貯めた塗工液３０の一部を塗工ローラ２の外周面に供給するように構成されている。また、前記供給部３は、チャンバー３ａにて塗工ローラ２の外周面に供給されなかった塗工液３０を流出経路３ｃを経て循環用タンク３ｄへ送るように構成されている。このように、供給部３は、塗工液３０を循環させつつ、循環させている塗工液３０の一部を塗工ローラ２の外周面に供給するように構成されている。 The supply unit 3 is configured to store the coating liquid 30 flowing from the inflow path 3b in the chamber 3a and to supply a part of the stored coating liquid 30 to the outer peripheral surface of the coating roller 2. The supply unit 3 is configured to send the coating liquid 30 not supplied to the outer peripheral surface of the coating roller 2 in the chamber 3a to the circulation tank 3d via the outflow path 3c. As described above, the supply unit 3 is configured to supply a part of the circulated coating liquid 30 to the outer peripheral surface of the coating roller 2 while circulating the coating liquid 30.
前記第１のブレード部材６は、塗工ローラ２の回転方向にて、チャンバー３ａの最も前方側に配置されている。第１のブレード部材６は、通常、板状に形成されている。第１のブレード部材６は、少なくとも一部が、塗工ローラ２の外周面の周囲面部２ｂに接触するように配置されている。
第１のブレード部材６は、上記の接触部分によって、塗工ローラ２の外周面の周囲面部２ｂに付着した塗工液３０を取り除き、凹部２ａ内の塗工液３０を残すように構成されている。
第１のブレード部材６としては、例えば、ドクターブレードが挙げられる。
The first blade member 6 is disposed on the foremost side of the chamber 3a in the rotation direction of the coating roller 2. The first blade member 6 is usually formed in a plate shape. The first blade member 6 is arranged so that at least a part thereof comes into contact with the peripheral surface portion 2 b of the outer peripheral surface of the coating roller 2.
The first blade member 6 is configured to remove the coating liquid 30 adhered to the peripheral surface 2b of the outer peripheral surface of the coating roller 2 by the above-mentioned contact portion, and to leave the coating liquid 30 in the concave portion 2a. I have.
The first blade member 6 includes, for example, a doctor blade.
本実施形態の塗工装置１は、第１のブレード部材６によって塗工ローラ２の外周面の凹部２ａに残存した塗工液３０を、シート部材５０に転写することにより、塗工を行うように構成されている。 The coating apparatus 1 of the present embodiment performs coating by transferring the coating liquid 30 remaining in the concave portion 2 a on the outer peripheral surface of the coating roller 2 to the sheet member 50 by the first blade member 6. Is configured.
本実施形態の塗工装置１においては、シート部材５０に塗工された塗工液３０の厚みが、０．１〜１０μｍであってもよい。 In the coating device 1 of the present embodiment, the thickness of the coating liquid 30 applied to the sheet member 50 may be 0.1 to 10 μm.
次に、本発明の塗工膜の製造方法の一実施形態について説明する。本実施形態の塗工膜４０の製造方法は、上記の塗工装置１を用いることによって行うことができる。 Next, an embodiment of the method for producing a coating film of the present invention will be described. The method for manufacturing the coating film 40 of the present embodiment can be performed by using the above-described coating apparatus 1.
本実施形態の塗工膜の製造方法は、相対的に移動する被塗工物（ここでは、例えば、シート部材）５０に塗工液３０を塗工する塗工ローラ２であって、外周面に凹部２ａを有する塗工ローラ２を被塗工物５０の移動方向と反対の方向に回転させつつ、前記凹部２ａに供給された塗工液３０を前記被塗工物５０に接触させることにより、前記塗工液３０を前記被塗工物５０に塗工して塗工膜４０を製造する塗工工程を備える。
前記塗工工程は、チャンバー３ａを有し前記塗工ローラ２の外周面の少なくとも前記凹部２ａに前記チャンバー３ａ内の前記塗工液３０を供給する供給部３を用い、前記塗工ローラ２の外周面の少なくとも前記凹部２ａに、前記チャンバー３ａ内の前記塗工液３０を供給する供給工程を有する。
本実施形態の塗工膜４０の製造方法では、前記塗工ローラの外径は、６０〜８０ｍｍであり、前記塗工ローラ２の回転速度の大きさＶｒと前記被塗工物５０の移動速度の大きさＶｍとの差を０〜６０ｍ／分とする。なお、塗工ローラ２の回転速度Ｖｒは、塗工ローラ２の外周面の移動速度である。
The method of manufacturing a coating film according to the present embodiment is a coating roller 2 that applies a coating liquid 30 to an object (here, for example, a sheet member) 50 that moves relatively, By rotating the coating roller 2 having the concave portion 2a in the direction opposite to the moving direction of the workpiece 50, the coating liquid 30 supplied to the concave portion 2a is brought into contact with the workpiece 50. And a coating step of applying the coating liquid 30 to the workpiece 50 to produce a coating film 40.
The coating step includes a supply unit 3 having a chamber 3a and supplying the coating liquid 30 in the chamber 3a to at least the concave portion 2a on the outer peripheral surface of the coating roller 2; There is a supply step of supplying the coating liquid 30 in the chamber 3a to at least the concave portion 2a on the outer peripheral surface.
In the method of manufacturing the coating film 40 according to the present embodiment, the outer diameter of the coating roller is 60 to 80 mm, the magnitude Vr of the rotation speed of the coating roller 2 and the moving speed of the object 50 to be coated. Is set to 0 to 60 m / min. The rotation speed Vr of the coating roller 2 is a moving speed of the outer peripheral surface of the coating roller 2.
前記塗工工程では、例えば上記の供給部３によって、上述したように、塗工液３０を循環させつつ塗工ローラ２の外周面の凹部２ａに塗工液３０を供給する。
このように塗工液３０が供給されつつ、塗工ローラ２が回転することにより、塗工ローラ２の外周面の凹部２ａに供給された塗工液３０が被塗工物５０に塗工される。即ち、凹部２ａ内の塗工液３０が被塗工物５０に接触して転写されて、塗工膜４０が形成される。
In the coating step, for example, the supply unit 3 supplies the coating liquid 30 to the recess 2 a on the outer peripheral surface of the coating roller 2 while circulating the coating liquid 30 as described above.
By rotating the coating roller 2 while the coating liquid 30 is supplied in this manner, the coating liquid 30 supplied to the concave portion 2a on the outer peripheral surface of the coating roller 2 is coated on the workpiece 50. You. That is, the coating liquid 30 in the concave portion 2a is transferred in contact with the object 50 to be coated, and the coating film 40 is formed.
上記の通り、本実施形態の塗工装置１は、
相対的に移動する被塗工物５０に塗工液３０を塗工して塗工膜４０を形成する塗工ローラ２であって、外周面に凹部２ａを有する塗工ローラ２と、
チャンバー３ａを有し前記塗工ローラ２の外周面の少なくとも前記凹部２ａに前記チャンバー３ａ内の前記塗工液３０を供給する供給部３とを備え、
前記被塗工物５０の移動方向と反対の方向に前記塗工ローラ２を回転させつつ、前記凹部２ａに供給された塗工液３０を前記被塗工物５０に接触させることにより、前記塗工液３０を前記被塗工物５０に塗工するように構成され、
前記塗工ローラ２の外径は、６０〜８０ｍｍであり、
前記塗工ローラ２の回転速度の大きさＶｒと前記被塗工物５０の移動速度の大きさＶｍとの差Ｖ（＝Ｖｍ−Ｖｒ）が、０〜６０ｍ／分であるように構成されている。
As described above, the coating device 1 according to the present embodiment includes:
A coating roller 2 that forms a coating film 40 by applying a coating liquid 30 to an object 50 that relatively moves, and a coating roller 2 having a concave portion 2a on an outer peripheral surface;
A supply unit 3 having a chamber 3a and supplying the coating liquid 30 in the chamber 3a to at least the concave portion 2a on the outer peripheral surface of the coating roller 2;
The coating liquid 30 supplied to the concave portion 2a is brought into contact with the workpiece 50 while rotating the coating roller 2 in a direction opposite to the moving direction of the workpiece 50, thereby performing the coating. It is configured to apply the working liquid 30 to the workpiece 50,
The outer diameter of the coating roller 2 is 60 to 80 mm,
The difference V (= Vm−Vr) between the magnitude Vr of the rotation speed of the coating roller 2 and the magnitude Vm of the moving speed of the workpiece 50 is configured to be 0 to 60 m / min. I have.
かかる構成によれば、塗工ローラ２の外径が６０ｍｍ〜８０ｍｍであり、被塗工物５０の移動速度の絶対値Ｖｍに対する塗工ローラ２の回転速度の絶対値Ｖｒの差Ｖが、０〜６０ｍ／分であることによって、被塗工物５０上の塗工液３０（塗膜）と塗工ローラ２上の塗工液３０（塗膜）との間、もしくは、被塗工物５０と塗工ローラ２との間に、被塗工物５０の移動及び塗工ローラ２の回転に伴って巻き込まれる空気の量が抑制され、塗工ローラ２と被塗工物５０との接触状態（位置関係）が安定する。このように、不要な空気を巻き込みつつ塗工液３０が被塗工物５０に塗工されることを抑制し得るため、塗工ローラ２と被塗工物５０との間に十分な塗工液３０のビードを形成することができ、このビードの形成によって、上記不要な空気の巻き込みに起因する塗工不良を抑制し得る。
また、上記ビードが十分に形成された状態で被塗工物５０と塗工ローラ２とが互いに反対の方向に移動することによって、被塗工物５０と塗工液３０との間に摩擦を発生させることができ、この摩擦によって、被塗工物５０に付着した異物を除去することが可能となる。
従って、塗工不良を抑制しながら塗工液３０を被塗工物５０に塗工することができ、しかも、塗工によって異物の除去をも可能となる。
According to such a configuration, the outer diameter of the coating roller 2 is 60 mm to 80 mm, and the difference V between the absolute value Vr of the rotation speed of the coating roller 2 and the absolute value Vm of the moving speed of the article 50 is 0. ６０60 m / min, between the coating liquid 30 (coating film) on the coating object 50 and the coating liquid 30 (coating film) on the coating roller 2, or The amount of air entrained by the movement of the workpiece 50 and the rotation of the coating roller 2 between the coating roller 2 and the coating roller 2 is suppressed, and the contact state between the coating roller 2 and the workpiece 50 is reduced. (Positional relationship) is stabilized. As described above, since the coating liquid 30 can be prevented from being applied to the object 50 while entraining unnecessary air, a sufficient coating can be performed between the coating roller 2 and the object 50. A bead of the liquid 30 can be formed, and the formation of the bead can suppress the coating failure caused by the unnecessary air entrainment.
Further, the object 50 and the coating roller 2 move in opposite directions in a state where the beads are sufficiently formed, so that friction between the object 50 and the coating liquid 30 is generated. The friction can remove foreign substances attached to the article 50 to be coated.
Therefore, it is possible to apply the coating liquid 30 to the object 50 while suppressing coating defects, and it is also possible to remove foreign substances by coating.
本実施形態の塗工装置１においては、
前記被塗工物５０の移動方向における前記塗工液３０が塗工される位置よりも下流側の前記被塗工物５０の張力が、５０〜１０００Ｎ／ｍであってもよい。
上記下流側の被塗工物５０の張力が５０〜１０００Ｎ／ｍであることによって、上記塗工液３０に対する空気の同伴をより抑制することができる。これによって、より十分に上記ビードを形成することができるため、より塗工不良を抑制することができ、また、より異物を除去することが可能となる。
In the coating device 1 of the present embodiment,
The tension of the object to be coated 50 on the downstream side of the position where the application liquid 30 is applied in the moving direction of the object to be coated 50 may be 50 to 1000 N / m.
When the tension of the coating object 50 on the downstream side is 50 to 1000 N / m, entrainment of air with the coating liquid 30 can be further suppressed. As a result, the beads can be formed more sufficiently, so that coating defects can be further suppressed, and foreign substances can be further removed.
本実施形態の塗工装置１においては、
前記被塗工物５０の厚みが、１０〜７０μｍであってもよい。
In the coating device 1 of the present embodiment,
The coating object 50 may have a thickness of 10 to 70 μm.
本実施形態の塗工装置１においては、
前記塗工液３０の粘度が、０．５〜５０ｍＰａ・ｓであってもよい。
塗工液３０の粘度が０．５〜５０ｍＰａ・ｓであることによって、上記塗工液３０に対する空気の同伴をより抑制することができる。これによって、より十分に上記ビードを形成することができるため、より塗工不良を抑制することができ、また、より異物を除去することが可能となる。
In the coating device 1 of the present embodiment,
The viscosity of the coating liquid 30 may be 0.5 to 50 mPa · s.
When the viscosity of the coating liquid 30 is 0.5 to 50 mPa · s, entrainment of air with the coating liquid 30 can be further suppressed. As a result, the beads can be formed more sufficiently, so that coating defects can be further suppressed, and foreign substances can be further removed.
本実施形態の塗工装置１においては、前記凹部２ａが、１００〜２５００線／インチであるように線状またはハニカム状に形成されていてもよい。
本実施形態の塗工装置１においては、前記被塗工物５０に塗工された前記塗工液３０の厚みが、０．１〜１０μｍであってもよい。
本実施形態の塗工装置１においては、前記塗工液３０が、紫外線硬化樹脂を含んでいてもよい。
In the coating apparatus 1 of the present embodiment, the concave portion 2a may be formed in a linear shape or a honeycomb shape so as to be 100 to 2500 lines / inch.
In the coating apparatus 1 of the present embodiment, the thickness of the coating liquid 30 applied to the workpiece 50 may be 0.1 to 10 μm.
In the coating device 1 of the present embodiment, the coating liquid 30 may include an ultraviolet curable resin.
本実施形態の塗工膜４０の製造方法は、
相対的に被塗工物５０に塗工液３０を塗工する塗工ローラ２であって、外周面に凹部２ａを有する塗工ローラ２を前記被塗工物５０の移動方向と反対の方向に回転させつつ、前記凹部２ａに供給された塗工液３０を前記被塗工物５０に接触させることにより、前記塗工液３０を前記被塗工物５０に塗工して塗工膜４０を形成する塗工工程を備え、
前記塗工工程は、
チャンバー３ａを有し前記塗工ローラ２の外周面の少なくとも前記凹部２ａに前記チャンバー３ａ内の前記塗工液３０を供給する供給部３を用い、前記塗工ローラ２の外周面の少なくとも前記凹部２ａに、前記チャンバー３ａ内の前記塗工液３０を供給する供給工程を有し、
前記塗工ローラ２の外径は、６０〜８０ｍｍであり、
前記塗工ローラ２の回転速度の大きさＶｒと前記被塗工物５０の移動速度の大きさＶｍとの差Ｖ（＝Ｖｒ−Ｖｍ）を、０〜６０ｍ／分とする方法である。
The method for manufacturing the coating film 40 of the present embodiment includes:
A coating roller 2 for relatively applying a coating liquid 30 to a coating object 50, the coating roller 2 having a concave portion 2a on an outer peripheral surface being moved in a direction opposite to a moving direction of the coating object 50. The coating liquid 30 supplied to the concave portion 2a is brought into contact with the object 50 while rotating, so that the coating liquid 30 is applied to the object 50 to form a coating film 40. With a coating process to form
The coating step includes:
A supply unit 3 having a chamber 3a and supplying the coating liquid 30 in the chamber 3a to at least the concave portion 2a on the outer peripheral surface of the coating roller 2 is used. At least the concave portion on the outer peripheral surface of the coating roller 2 is used. 2a, a supply step of supplying the coating liquid 30 in the chamber 3a,
The outer diameter of the coating roller 2 is 60 to 80 mm,
In this method, a difference V (= Vr−Vm) between the magnitude Vr of the rotation speed of the coating roller 2 and the magnitude Vm of the moving speed of the article 50 is set to 0 to 60 m / min.
かかる構成によれば、前述の通り、塗工ローラ２の外径が６０〜８０ｍｍであり、被塗工物５０の移動速度の絶対値Ｖｍに対する塗工ローラ２の回転速度の絶対値Ｖｒの差Ｖを、０〜６０ｍ／分とすることによって、塗工ローラ２と被塗工物５０との間に十分な塗工液３０のビードを形成することができ、このビードの形成によって、上記不要な空気の巻き込みに起因する塗工不良を抑制し得る。
また、上記ビードが十分に形成された状態で被塗工物５０と塗工ローラ２とが互いに反対の方向に移動することによって、被塗工物５０と塗工液３０との間に摩擦を発生させることができ、この摩擦によって、被塗工物５０に付着した異物を除去することが可能となる。
従って、塗工不良を抑制しながら塗工液３０を被塗工物５０に塗工することができ、しかも、塗工によって異物の除去をも可能となる。
According to such a configuration, as described above, the outer diameter of the coating roller 2 is 60 to 80 mm, and the difference between the absolute value Vr of the rotation speed of the coating roller 2 and the absolute value Vm of the moving speed of the article 50 to be coated. By setting V to 0 to 60 m / min, a sufficient bead of the coating liquid 30 can be formed between the coating roller 2 and the object 50 to be coated. It is possible to suppress coating defects due to entrained air.
Further, the object 50 and the coating roller 2 move in opposite directions in a state where the beads are sufficiently formed, so that friction between the object 50 and the coating liquid 30 is generated. The friction can remove foreign substances attached to the article 50 to be coated.
Therefore, the coating liquid 30 can be applied to the object 50 while suppressing coating defects, and foreign matter can be removed by coating.
本実施形態の塗工装置１及び塗工膜４０の製造方法は、上記の通りであるが、本発明は、上記実施形態に限定されず、本発明の意図する範囲内において適宜設計変更されることが可能である。 The method of manufacturing the coating apparatus 1 and the coating film 40 of the present embodiment is as described above, but the present invention is not limited to the above-described embodiment, and the design is appropriately changed within a range intended by the present invention. It is possible.
次に実施例を挙げて本発明をさらに詳しく説明するが、本発明はこれらに限定されるものではない。 Next, the present invention will be described in more detail by way of examples, but the present invention is not limited thereto.
以下に示す条件下にて、試験例１、試験例２及び試験例３の塗工装置を稼働させ、それぞれ塗工膜の製造方法を行った。 Under the following conditions, the coating apparatuses of Test Example 1, Test Example 2 and Test Example 3 were operated, and the method of producing a coated film was performed.
（試験例１）
上記実施形態の塗工装置を稼働させ、塗工性能と、異物の除去率とを調べた。なお、稼働時の詳細な稼働条件は、下記の通りである。また、シート部材を、該シート部材に粘着剤を塗工し、疑似異物として粒子径１００μｍのガラスビーズを散布した後、乾燥させて異物を付着させた状態で用いた。
シート部材：樹脂（ＰＥＴ）フィルム（幅０．５ｍ、厚み４０μｍ）によって形成されたシート部材であって、疑似異物が付着されたシート部材
シート部材の移動速度：２０ｍ／分
シート部材の移動方向と塗工ローラの回転方向：反対方向
シート部材の移動速度と塗工ローラの回転速度との絶対値としての差：−１０、０、２０、４０、６０、８０ｍ／分
塗工ローラの外径：５０、６０、８０、９０ｍｍ
塗工ローラの凹部：ハニカム状、１５００線／インチ、２ｍＬ／ｍ２
塗工液：アルフォン（４０ｗｔ％）
塗工液の粘度：５０ｍＰａ・ｓ
供給部にて塗工液を循環
(Test Example 1)
The coating apparatus of the above embodiment was operated, and the coating performance and the foreign matter removal rate were examined. The detailed operating conditions at the time of operation are as follows. Further, the sheet member was used in a state where an adhesive was applied to the sheet member, glass beads having a particle diameter of 100 μm were sprinkled as pseudo foreign substances, and then dried to adhere the foreign substances.
Sheet member: a sheet member formed of a resin (PET) film (width: 0.5 m, thickness: 40 μm), to which pseudo foreign matter is attached. Moving speed of the sheet member: 20 m / min. Rotation direction of coating roller: opposite direction Difference as absolute value between moving speed of sheet member and rotation speed of coating roller: -10, 0, 20, 40, 60, 80 m / min Outer diameter of coating roller: 50, 60, 80, 90 mm
Coating roller recess: honeycomb shape, 1500 lines / inch, 2 mL / m 2
Coating liquid: Alfon (40wt%)
Coating liquid viscosity: 50 mPa · s
Circulating coating fluid at supply section
（粘度の測定）
レオメータ（型式ＲＳ１、ＨＡＡＫＥ社製）を用い、２０℃にて、せん断速度１（１／ｓ）の条件で塗工液の粘度を測定した。
(Measurement of viscosity)
Using a rheometer (model RS1, manufactured by HAAKE), the viscosity of the coating solution was measured at 20 ° C. under the condition of a shear rate of 1 (1 / s).
（塗工性能の評価）
シート部材に塗工された塗工液の外観を目視にて観察し、スジ状のムラが発生していなかった場合を極めて良好として「○」と表し、部分的にスジ状のムラが発生した場合を良好として「△」と表し、全体にスジ状のムラが発生した場合を不良として「×」で表すことによって、塗工性能を評価した。結果を図４、図５、図６及び図７に示す。
(Evaluation of coating performance)
The appearance of the coating liquid applied to the sheet member was visually observed, and a case where no streak-like unevenness was generated was marked as “very good” when the streak-like unevenness did not occur, and streak-like unevenness was partially generated. The coating performance was evaluated by expressing the case as “good” as “Δ” and as the whole as streak-like unevenness as “poor” as poor. The results are shown in FIGS. 4, 5, 6 and 7.
（異物の除去率の評価）
シート部材に塗工液を塗工する前において、幅５０ｍｍ×移動方向長さ５００ｍｍの領域（試験領域）を写真に撮影し、該領域に存在する疑似異物の数量を予め計数した。シート部材に塗工液を塗工した後、上記試験領域に存在する疑似異物の数量を計数し、下記式に従って、塗工前の疑似異物の数量に対する、塗工前後の疑似異物の数量の差の割合を、異物の除去率として算出した。結果を図４、図５、図６及び図７に示す。
異物の除去率＝｛（塗工前の疑似異物の数量）−（塗工後の疑似異物の数量）｝／（塗工前の疑似異物の数量）
(Evaluation of foreign matter removal rate)
Before applying the coating liquid to the sheet member, a region (test region) having a width of 50 mm and a length of 500 mm in the moving direction was photographed, and the number of pseudo foreign substances present in the region was counted in advance. After the coating liquid is applied to the sheet member, the number of the pseudo foreign substances present in the test area is counted, and the difference between the number of the pseudo foreign substances before and after the coating is compared with the number of the pseudo foreign substances before the coating according to the following equation. Was calculated as the foreign matter removal rate. The results are shown in FIGS. 4, 5, 6 and 7.
Foreign matter removal rate = {(quantity of pseudo foreign matter before coating)-(quantity of pseudo foreign matter after coating)} / (quantity of pseudo foreign matter before coating)
（試験例２）
下記の稼働条件を用いること以外は試験例１と同様にして、上記実施形態の塗工装置を稼働させ、塗工性能と、異物の除去率とを調べた。結果を図８に示す。
シート部材の移動速度：２０ｍ／分
シート部材の移動速度と塗工ローラの回転速度との差：６０ｍ／分
塗工ローラの外径：６０ｍｍ
塗工液の粘度：０．５、１０、３０、５０、６０、７０ｍＰａ・ｓ
(Test Example 2)
The coating apparatus of the above embodiment was operated in the same manner as in Test Example 1 except that the following operating conditions were used, and the coating performance and the foreign matter removal rate were examined. FIG. 8 shows the results.
Moving speed of the sheet member: 20 m / min Difference between the moving speed of the sheet member and the rotation speed of the coating roller: 60 m / min Outer diameter of the coating roller: 60 mm
Viscosity of coating liquid: 0.5, 10, 30, 50, 60, 70 mPa · s
（試験例３）
下記の稼働条件を用いること以外は試験例１と同様にして、上記実施形態の塗工装置を稼働させた。このとき、シート部材の移動方向における塗工される位置よりも下流側のシート部材の張力を測定すると共に、シート部材が上記塗工される位置を安定に通過するか否かを調べた。結果を表１に示す。
シート部材の移動速度：２０ｍ／分
シート部材の移動速度と塗工ローラの回転速度との絶対値としての差：６０ｍ／分
塗工ローラの外径：６０ｍｍ
塗工液の粘度：５０ｍＰａ・ｓ
(Test Example 3)
The coating apparatus of the above embodiment was operated in the same manner as in Test Example 1 except that the following operating conditions were used. At this time, the tension of the sheet member downstream of the coating position in the moving direction of the sheet member was measured, and it was checked whether the sheet member stably passed the coating position. Table 1 shows the results.
Moving speed of the sheet member: 20 m / min Difference between the moving speed of the sheet member and the rotation speed of the coating roller as an absolute value: 60 m / min Outer diameter of the coating roller: 60 mm
Coating liquid viscosity: 50 mPa · s
（張力の測定）
張力測定装置（ＬＸ−１００ＴＤ、三菱電機社製）を用いて、シート部材の移動方向における塗工される位置よりも下流側のシート部材の張力を測定した。
(Measurement of tension)
Using a tension measuring device (LX-100TD, manufactured by Mitsubishi Electric Corporation), the tension of the sheet member on the downstream side of the coating position in the moving direction of the sheet member was measured.
（評価基準）
・シート部材におけるシワの発生
走行しているシート部材を目視で観察し、シート部材の走行方向に向かうシワが１本以上発生しているか否かを評価した。シワが１本以上発生した場合、表１に「有り」と示した。シワが発生していなかった場合、表１に「無し」と示した。
・シート部材の走行安定性
塗工中のシート部材の走行状態を目視で観察し、シート部材が蛇行したり、波打ったりしているか否かを評価した。シート部材が蛇行したり、波打ったりしていなかった場合を走行が安定であると評価し、表１に「安定」と示した。そうでなかった場合を走行が不安定であると評価し、表１に「不安定」と示した。
・シート部材の張力安定性
上記張力測定装置を用いてによって上記下流側のシート部材の張力を連続的に測定（モニタリング）し、測定された張力の設定値（表１に示す各値）に対するバラツキが±３Ｎ／ｍ未満の場合には、張力が安定であると評価し、表１に「安定」と示した。一方、上記バラツキが±３Ｎ／ｍ以上の場合には、張力が不安定であると評価し、表１に「不安定」と示し、特に、上記バラツキが１５０％以上であり、且つ、１５０％以上の状態が３秒以上続いた場合には、張力が異常であると評価し、表１に「異常」と示した。
(Evaluation criteria)
-Generation of wrinkles in the seat member The running sheet member was visually observed, and it was evaluated whether or not one or more wrinkles in the running direction of the sheet member were generated. In the case where one or more wrinkles were generated, "Presence" is shown in Table 1. In the case where no wrinkles were generated, “none” is shown in Table 1.
-Running stability of the sheet member The running state of the sheet member during coating was visually observed to evaluate whether the sheet member was meandering or wavy. When the sheet member was not meandering or waving, running was evaluated as stable, and Table 1 shows "stable". If not, the running was evaluated as unstable, and Table 1 shows "unstable".
-Tension stability of the sheet member The tension of the sheet member on the downstream side is continuously measured (monitored) by using the tension measuring device, and the measured tension varies with respect to a set value (each value shown in Table 1). Is less than ± 3 N / m, the tension was evaluated to be stable, and Table 1 shows “stable”. On the other hand, when the variation is ± 3 N / m or more, it is evaluated that the tension is unstable, and “unstable” is shown in Table 1. In particular, the variation is 150% or more and 150% or more. When the above state continued for 3 seconds or more, the tension was evaluated as abnormal, and Table 1 shows "abnormal".
図５、図６に示すように、塗工ローラの外径が６０〜８０ｍｍであり、且つ、塗工ローラの移動速度に対する塗工ローラの回転速度の差が０〜６０ｍ／分である場合には、塗工膜にスジ状の塗工不良は観察されず、異物の除去率も高い結果となった。
これに対し、図４に示すように、塗工ローラの外径が６０ｍｍよりも小さい場合には、上記差が０ｍ／分の場合でのみ、塗工膜にスジ状の塗工不良が観察されず、上記差が２０〜８０ｍ／分では、塗工膜の一部にスジ状に塗工されていない塗工不良が観察された。また、図７に示すように、塗工ローラの外径が８０ｍｍよりも大きい場合には、上記差が０〜４０ｍ／分の場合でのみ、塗工膜にスジ状の塗工不良が観察されず、上記差が６０〜８０ｍ／分では、塗工膜の一部にスジ状に塗工されていない塗工不良が観察された。
As shown in FIGS. 5 and 6, when the outer diameter of the coating roller is 60 to 80 mm, and the difference between the rotation speed of the coating roller and the moving speed of the coating roller is 0 to 60 m / min. No streak-like coating defects were observed on the coating film, and the result was a high foreign matter removal rate.
On the other hand, as shown in FIG. 4, when the outer diameter of the coating roller is smaller than 60 mm, a streak-like coating defect is observed on the coating film only when the difference is 0 m / min. When the difference was 20 to 80 m / min, coating failure was not observed in which a part of the coating film was not applied in the form of stripes. Further, as shown in FIG. 7, when the outer diameter of the coating roller is larger than 80 mm, a streak-like coating defect is observed on the coating film only when the difference is 0 to 40 m / min. However, when the difference was 60 to 80 m / min, a coating defect in which a part of the coating film was not applied in a stripe shape was observed.
従って、塗工ローラの外径が６０〜８０ｍｍであり、且つ、塗工ローラの移動速度に対する塗工ローラの回転速度の差が０〜６０ｍ／分である場合には、これらの範囲を外れる場合よりも、塗工性能と、異物の除去率との双方に優れることがわかり、また、広い塗工条件で塗工し得ることもわかった。 Therefore, when the outer diameter of the coating roller is 60 to 80 mm, and the difference between the rotation speed of the coating roller and the moving speed of the coating roller is 0 to 60 m / min, the range is outside these ranges. It was found that both the coating performance and the foreign matter removal rate were more excellent than the above, and that coating could be performed under a wide range of coating conditions.
図８に示すように、塗工液の粘度が０．５〜５０ｍＰａ・ｓである場合には、５０ｍＰａ・ｓを超える場合よりも、塗工性能と、異物の除去率との双方に優れることがわかり、また、広い塗工条件で塗工し得ることもわかった。 As shown in FIG. 8, when the viscosity of the coating liquid is 0.5 to 50 mPa · s, both the coating performance and the foreign matter removal rate are superior to the case where the viscosity exceeds 50 mPa · s. It was also found that coating could be performed under a wide range of coating conditions.
表１に示すように、シート部材の移動方向における塗工液がシート部材に塗工される位置よりも下流側の張力が５０〜１０００Ｎ／ｍの場合には、この範囲を外れる場合よりも、シート部材が安定して上記塗工される位置を通過し得ることがわかった。シート部材の厚みが５〜７０μｍの場合には、この範囲を外れる場合よりも、シート部材が安定して上記塗工される位置を通過し得ることがわかった。上記下流側の張力が５０〜１０００Ｎ／ｍであり、且つ、シート部材の厚みが５〜７０μｍの場合には、シート部材が一層安定して上記塗工される位置を通過し得ることがわかった。上記下流側の張力が５０〜１０００Ｎ／ｍであり、且つ、シート部材の厚みが１０〜７０μｍの場合、または、上記下流側の張力が１００〜５００Ｎ／ｍであり、且つ、シート部材の厚みが５〜７０μｍの場合には、シート部材が一層安定して上記塗工される位置を通過し得ることがわかった。 As shown in Table 1, when the tension on the downstream side from the position where the coating liquid is applied to the sheet member in the moving direction of the sheet member is 50 to 1000 N / m, It has been found that the sheet member can stably pass the above-mentioned coating position. It has been found that when the thickness of the sheet member is 5 to 70 μm, the sheet member can pass through the above-described coating position more stably than when the thickness is out of this range. When the tension on the downstream side was 50 to 1000 N / m and the thickness of the sheet member was 5 to 70 μm, it was found that the sheet member could pass the coating position more stably. . When the downstream tension is 50 to 1000 N / m and the thickness of the sheet member is 10 to 70 μm, or when the downstream tension is 100 to 500 N / m, and the thickness of the sheet member is In the case of 5 to 70 μm, it was found that the sheet member could pass through the coating position more stably.
以上のように本発明の実施の形態及び実施例について説明を行なったが、各実施の形態及び実施例の特徴を適宜組み合わせることも当初から予定している。また、今回開示された実施の形態及び実施例はすべての点で例示であって制限的なものではないと考えられるべきである。本発明の範囲は上記した実施の形態及び実施例ではなくて特許請求の範囲によって示され、特許請求の範囲と均等の意味及び範囲内でのすべての変更が含まれることが意図される。 Although the embodiments and examples of the present invention have been described above, it is originally intended to appropriately combine the features of the embodiments and examples. The embodiments and examples disclosed this time are to be considered in all respects as illustrative and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the embodiments and examples, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.
１：塗工装置、
２：塗工ローラ、２ａ：凹部、２ｂ：周囲面部、
３：供給部、３ａ：チャンバー、３ｂ：流入経路、３ｃ：流出経路、３ｄ：循環用タンク、
６：第１のブレード部材、
８：第２のブレード部材、
３０：塗工液、
４０：塗工膜、
５０：被塗工物（シート部材）
1: Coating device,
2: coating roller, 2a: concave portion, 2b: peripheral surface portion,
3: supply unit, 3a: chamber, 3b: inflow path, 3c: outflow path, 3d: circulation tank,
6: first blade member,
8: second blade member,
30: Coating liquid,
40: Coating film,
50: Coated object (sheet member)
Claims (4)
チャンバーを有し前記塗工ローラの外周面の少なくとも前記凹部に前記チャンバー内の前記塗工液を供給する供給部とを備え、
前記被塗工物の移動方向と反対の方向に前記塗工ローラを回転させつつ、前記凹部に供給された塗工液を前記被塗工物に接触させることにより、前記塗工液を前記被塗工物に塗工して塗工膜を形成するように構成され、
前記塗工ローラの外径は、６０〜８０ｍｍであり、
前記塗工ローラの回転速度の大きさから前記被塗工物の移動速度の大きさを引いた差が０〜６０ｍ／分であり、
前記被塗工物の移動方向における前記塗工液が塗工される位置よりも下流側の前記被塗工物の張力が、５０〜１０００Ｎ／ｍであるように構成された、塗工装置。 A coating roller that applies a coating liquid to an object that moves relatively, a coating roller having a concave portion on an outer peripheral surface,
A supply unit that has a chamber and supplies the coating liquid in the chamber to at least the concave portion of the outer peripheral surface of the coating roller,
By rotating the coating roller in a direction opposite to the moving direction of the object to be coated and bringing the coating liquid supplied to the concave portion into contact with the object to be coated, the coating liquid is applied to the object to be coated. It is configured to apply to the coating to form a coating film,
The outer diameter of the coating roller is 60 to 80 mm,
The difference obtained by subtracting the magnitude of the moving speed of the object to be coated from the magnitude of the rotational speed of the coating roller is 0 to 60 m / min ,
A coating apparatus, wherein a tension of the object to be coated downstream of a position where the application liquid is applied in a moving direction of the object to be coated is 50 to 1000 N / m .
前記塗工工程は、
チャンバーを有し前記塗工ローラの外周面の少なくとも前記凹部に前記チャンバー内の前記塗工液を供給する供給部を用い、前記塗工ローラの外周面の少なくとも前記凹部に、前記チャンバー内の前記塗工液を供給する供給工程を有し、
前記塗工ローラの外径は、６０〜８０ｍｍであり、
前記塗工ローラの回転速度の大きさから前記被塗工物の移動速度の大きさを引いた差を０〜６０ｍ／分とし、
前記被塗工物の移動方向における前記塗工液が塗工される位置よりも下流側の前記被塗工物の張力を、５０〜１０００Ｎ／ｍとする、塗工膜の製造方法。 A coating roller that applies a coating liquid to a relatively moving workpiece, while rotating a coating roller having a concave portion on an outer peripheral surface in a direction opposite to a moving direction of the workpiece. A coating step of forming a coating film by applying the coating liquid to the coating object by contacting the coating liquid supplied to the concave portion with the coating object,
The coating step includes:
A supply unit having a chamber and supplying the coating liquid in the chamber to at least the concave portion of the outer peripheral surface of the coating roller, and at least the concave portion of the outer peripheral surface of the coating roller, Having a supply step of supplying a coating liquid,
The outer diameter of the coating roller is 60 to 80 mm,
A difference obtained by subtracting the magnitude of the moving speed of the object to be coated from the magnitude of the rotational speed of the coating roller is 0 to 60 m / min ,
A method for producing a coating film, wherein a tension of the object to be coated on a downstream side of a position where the coating liquid is applied in a moving direction of the object to be coated is 50 to 1000 N / m .
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| JP2017065487A JP6655039B2 (en) | 2017-03-29 | 2017-03-29 | Coating apparatus and method for manufacturing coating film |
| TW106145255A TW201836713A (en) | 2017-03-29 | 2017-12-22 | Coating apparatus and method for producing coating film |
| KR1020180006576A KR102431647B1 (en) | 2017-03-29 | 2018-01-18 | Coating apparatus and method for producing coating film |
| CN201810172214.5A CN108686884B (en) | 2017-03-29 | 2018-03-01 | Coating device and method for manufacturing coating film |
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| CN111715461B (en) * | 2020-06-30 | 2021-06-15 | 长江师范学院 | Universal electrode coating system for lithium/sodium ion battery |
| JP2024172754A (en) * | 2023-06-01 | 2024-12-12 | 日東電工株式会社 | Coating method and method for producing optical laminate |
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| DE19542097C2 (en) * | 1995-11-11 | 1997-10-16 | Hans Josef May | Device for coating metal strips |
| JP3542772B2 (en) | 2000-12-19 | 2004-07-14 | 富士機械工業株式会社 | Gravure coating equipment |
| US8535763B2 (en) * | 2006-09-08 | 2013-09-17 | Toray Industries, Inc. | Coating method and coating apparatus |
| JP5005310B2 (en) * | 2006-10-05 | 2012-08-22 | 株式会社リコー | Lubricant coating apparatus, process cartridge, and image forming apparatus |
| JP5265165B2 (en) * | 2007-09-28 | 2013-08-14 | 富士フイルム株式会社 | Coating apparatus and ink jet recording apparatus using the same |
| JP5443061B2 (en) * | 2009-06-03 | 2014-03-19 | 帝人デュポンフィルム株式会社 | Gravure coating method for sheet |
| JP5752442B2 (en) * | 2011-02-28 | 2015-07-22 | 共和レザー株式会社 | Method for producing synthetic resin skin material |
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| JP5989843B2 (en) * | 2015-03-30 | 2016-09-07 | 富士機械工業株式会社 | Coating equipment |
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| CN108686884B (en) | 2021-12-14 |
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