WO2019150846A1 - Intermittent coating device - Google Patents
Intermittent coating device Download PDFInfo
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- WO2019150846A1 WO2019150846A1 PCT/JP2018/047426 JP2018047426W WO2019150846A1 WO 2019150846 A1 WO2019150846 A1 WO 2019150846A1 JP 2018047426 W JP2018047426 W JP 2018047426W WO 2019150846 A1 WO2019150846 A1 WO 2019150846A1
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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
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
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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
- B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
- B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
Definitions
- the present invention relates to an intermittent coating apparatus that intermittently forms a coated area and an uncoated area by applying a coating liquid intermittently on the surface of a substrate that is continuously conveyed.
- a conventional intermittent coating apparatus for example, as described in Patent Document 1 and the like, a flow path (supply path) for discharging the coating liquid supplied from the coating liquid tank from the coating die to the substrate surface, Switching to the flow path (collection path) for collecting the coating liquid in the coating liquid tank is performed by two switching valves (supply valve and recovery valve). Thereby, an application area
- two switching valves (a supply valve and a recovery valve) are used to form an application region and an unapplication region at a predetermined timing on the surface of the substrate that is continuously transported. It is necessary to switch quickly.
- the present invention has been made in view of the above problems, and its main purpose is to intermittently apply a coating solution to the surface of a substrate that is continuously transported to intermittently apply a coating region and an uncoated region.
- an intermittent application apparatus that is formed automatically, even if the flow rate of the coating liquid supplied from the coating liquid tank is increased, it is possible to form a uniform coated area and an uncoated area without impairing the liquid breakage at the end of coating.
- the object is to provide an intermittent coating apparatus.
- An intermittent coating apparatus is an intermittent coating apparatus that intermittently forms a coating area and an uncoated area by applying a coating liquid intermittently on the surface of a substrate that is continuously conveyed.
- an intermittent coating apparatus that intermittently forms a coating area and an uncoated area by applying a coating liquid intermittently on the surface of a substrate that is continuously conveyed, Even if the flow rate of the coating liquid to be supplied is increased, it is possible to provide an intermittent coating apparatus capable of forming a uniform coated area and an uncoated area without impairing the liquid breakage at the coating end edge.
- FIG. 4 and 5 are diagrams showing a general configuration of the conventional intermittent application apparatus 100.
- FIG. 4 shows a state when an application region is formed
- FIG. 5 shows an unapplied region formed. It shows the state when
- the coating liquid 120 stored in the coating liquid tank 110 is fed by a pump 111 provided in the middle of the supply path 121, and is applied to the coating die. 115 is supplied to a manifold 116 in 115. Then, the coating liquid 120 supplied to the manifold 116 is discharged from the slit of the coating die 115, and a coating film 131 is formed on the surface of the base material 130.
- a supply valve 112 that opens and closes the supply path 121 is provided in the supply path 121 between the pump 111 and the coating die 115.
- a recovery valve 117 that opens and closes the recovery path 123 is provided in the recovery path 123 branched from the supply path 121 and connected to the coating liquid tank 110.
- the supply valve 112 and the recovery valve 117 are opened and closed by driving units (for example, air cylinders) 113 and 118, respectively, and the driving is controlled by the control unit 119.
- FIG. 6 is a diagram showing the opening / closing operation of the supply valve 112 and the recovery valve 117 and the application area A and the non-application area B formed by intermittent application in the intermittent application apparatus 100 shown in FIGS. 4 and 5. .
- the supply valve 112 is opened and the recovery valve 117 is closed.
- the coating liquid 120 supplied from the coating liquid tank 110 is discharged from the slits of the coating die 115, and a coating region A is formed on the surface of the substrate 130.
- the supply valve 112 is closed and the recovery valve 117 is opened. Thereby, the discharge of the coating liquid 120 from the slit of the coating die 115 is stopped, a non-coating area is formed on the surface of the base material 130, and the coating liquid 120 in the supply path 121 passes through the recovery path 123. The liquid is collected in the coating liquid tank 110.
- the supply valve 112 is closed and the recovery valve 117 is opened when an uncoated area is formed. Even so, it becomes difficult to smoothly collect the coating liquid 120 supplied from the coating liquid tank 110 to the supply path 121 into the coating liquid tank 110. Therefore, the coating liquid 120 supplied to the supply path 121 cannot be completely collected in the coating liquid tank 110, the pressure of the coating liquid 120 in the supply path 121 rises temporarily, and a part of the coating liquid 120 is discharged from the supply valve 112. It leaks into the coating die 115. As a result, the liquid running out of the coating liquid 120 at the end of application is worsened. For example, as shown in FIG. Problems such as the occurrence of disturbance B occur.
- the time T during which the collection valve 117 is opened (the time during which the uncoated area B is formed) T is very short.
- the time T during which the collection valve 117 is opened is very short, 10 msec. Therefore, the coating liquid 120 supplied to the supply path 121 cannot be collected in the coating liquid tank 110 in a short time, and the pressure of the coating liquid 120 in the supply path 121 temporarily rises, and a part of the coating liquid 120 leaks from the supply valve 112 to the coating die 115. As a result, the problem that the coating solution 120 runs out at the coating end end and the coating solution 120 adheres to the uncoated region B becomes more prominent.
- the inventors of the present application separately provide an air supply path for supplying pressurized air from the outside in the middle of the coating liquid recovery path 123, and when the application area is formed, the pressure air is supplied to the recovery path 123. If it is possible to avoid filling the recovery path 123 with the coating liquid by supplying and discharging the coating liquid in the recovery path 123, the coating liquid in the supply path 121 is recovered when the recovery valve 117 is opened.
- the present invention has been conceived based on the assumption that the liquid can be smoothly collected in the coating liquid tank 110 without being blocked in the passage 123.
- FIG. 1 and 2 are diagrams schematically showing a configuration of an intermittent coating apparatus according to an embodiment of the present invention.
- FIG. 1 shows a state when a coating region is formed, and FIG. The state when the application region is formed is shown.
- the intermittent application apparatus in this embodiment is an apparatus which intermittently forms an application area
- the intermittent coating apparatus 1 includes a coating liquid tank (supply unit) 10 that supplies a coating liquid 20 and a coating die that applies the coating liquid 20 to the surface of a substrate 30.
- (Coating part) 14 a supply path 21 for supplying the coating liquid 20 from the coating liquid tank 10 to the coating die 14, and a branch from the middle of the supply path 21 to apply the coating liquid 20 in the supply path 21 to the coating liquid tank 10, a recovery path 23 for recovery, and an air supply path 24 that is connected to the recovery path 23 and supplies pressure air to the recovery path 23.
- one end of the air supply path 24 is connected to an air supply unit (not shown) that supplies pressure air.
- a supply valve 12 that controls opening and closing of the supply path 21 is provided in the supply path 21 between the pump 11 and the coating die 14.
- a recovery valve 16 that controls opening and closing of the recovery path 23 is provided in the recovery path 23 between the pump 11 and the coating liquid tank 10.
- an air supply valve 18 that controls the opening and closing of the air supply path 24 is provided in the air supply path 24 that is connected in the middle of the recovery path 23.
- the supply valve 12 and the recovery valve 16 are respectively driven by drive units (for example, air cylinders) 13 and 17, and the drive is controlled by the control unit 19.
- the opening and closing of the supply valve 12, the opening and closing of the recovery valve 16, and the opening and closing of the air supply valve 18 are the opening and closing of the supply path 21, the opening and closing of the recovery path 23, and the opening and closing of the air supply path 24, respectively. Used interchangeably.
- the coating liquid 20 accommodated in the coating liquid tank 10 is fed by a pump 11 provided in the middle of the supply path 21 and supplied to the manifold 15 in the coating die 14. Then, the coating liquid 20 supplied to the manifold 15 is discharged from the slit of the coating die 14 to form a coating region A on the surface of the substrate 30.
- FIG. 3 is a diagram showing the opening / closing operation of the supply valve 12 and the recovery valve 16 and the application area A and the non-application area B formed by intermittent application in the intermittent application apparatus 1 shown in FIGS. 1 and 2. .
- the supply valve 12 is opened and the recovery valve 16 is closed. Thereby, the coating liquid 20 supplied from the coating liquid tank 10 is discharged from the slit of the coating die 14, and a coating film (coating region) A is formed on the surface of the base material 30.
- the state where the collection path 23 is not filled with the coating liquid 20 includes not only the state where the collection path 23 is filled with pressurized air but also a state where the coating liquid 20 remains in part.
- the supply valve 12 is closed and the recovery valve 16 is opened. Thereby, the discharge of the coating liquid 20 from the slit of the coating die 14 is stopped, the non-coating area B is formed on the surface of the base material 30, and the coating liquid 20 in the supply path 21 passes through the recovery path 23. And collected in the coating liquid tank 110.
- the coating liquid 20 runs out at the end of application and the problem that the coating liquid 20 adheres to the uncoated area B as shown in FIG. 6 does not occur. .
- the collection path 123 is not filled with the coating liquid 20 immediately after the collection valve 16 is opened. Therefore, the coating liquid 20 supplied from the coating liquid tank 10 to the supply path 21 can be collected in the coating liquid tank 10 in a short time. Therefore, the pressure of the coating liquid 20 in the supply path 21 can be prevented from temporarily rising, and the coating liquid 20 can be prevented from leaking from the supply valve 12 to the coating die 14.
- the recovery valve 16 is closed while the supply valve 12 is opened and the coating film 31 is formed on the surface of the base material 30. Even if is supplied, the pressure of the coating liquid 20 supplied from the pump 11 to the supply path 21 is not affected. Therefore, there is no possibility that the film thickness of the coating film 31 formed on the surface of the substrate 30 will vary.
- the intermittent coating apparatus of this embodiment even if the flow rate of the coating liquid supplied from the coating liquid tank is increased, the liquid running out property at the end of coating is not impaired, and a uniform coated area and an uncoated area are formed. Can be formed.
- the opening / closing timing of the air supply valve 18 does not necessarily coincide with the opening / closing timing of the supply valve 12, and at least the supply valve 12 is opened as shown in FIG.
- the air supply valve 18 may be controlled to be opened when the recovery valve 16 is closed.
- the opening / closing timing of the supply valve 12 and the opening / closing timing of the recovery valve 16 are matched, but it is not always necessary to match both.
- the timing for closing the collection valve 117 may be slightly delayed with respect to the timing for opening the supply valve 12.
- the air supply valve 18 is preferably controlled to be closed at least while the recovery valve 16 is open.
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Abstract
The purpose of the invention is to provide an intermittent coating device that can form a uniform coated area and uncoated area without losing the liquid cut-off performance at a coating terminating end even if the flow rate of a coating liquid supplied from a coating liquid tank is increased. Specifically, this intermittent coating device comprises: a supply unit 10 that supplies a coating liquid; a coating unit 14 that coats the coating liquid on the surface of a substrate; a supply route 21 by which the coating liquid is supplied from the supply unit to the coating unit; a recovery route 23 that branches from the middle of the supply route and that recovers the coating liquid in the supply route to the supply unit; and an air supply route 24 that is connected to the middle of the recovery route and that supplies pressurized air to the recovery route. At least when the supply route is opened and the recovery route is sealed, the air supply route is controlled so as to be opened and pressurized air is supplied to the recovery route from the air supply route.
Description
本発明は、連続的に搬送される基材の表面に、塗液を間欠的に塗布して、塗布領域と未塗布領域とを断続的に形成する間欠塗布装置に関する。
The present invention relates to an intermittent coating apparatus that intermittently forms a coated area and an uncoated area by applying a coating liquid intermittently on the surface of a substrate that is continuously conveyed.
従来の間欠塗工装置は、例えば、特許文献１等に記載されているように、塗液タンクから供給された塗液を、塗布ダイから基材表面に吐出させる流路（供給路）と、塗液を塗液タンクに回収させる流路（回収路）との切り替えを、２つの切替バルブ（供給バルブ、回収バルブ）によって行っている。これにより、塗液タンクからの塗液の供給を連続的に行いながら、連続的に搬送される基材の表面に、塗布領域と未塗布領域とを断続的に形成することができる。
A conventional intermittent coating apparatus, for example, as described in Patent Document 1 and the like, a flow path (supply path) for discharging the coating liquid supplied from the coating liquid tank from the coating die to the substrate surface, Switching to the flow path (collection path) for collecting the coating liquid in the coating liquid tank is performed by two switching valves (supply valve and recovery valve). Thereby, an application area | region and an unapplication area | region can be intermittently formed in the surface of the base material conveyed continuously, supplying the coating liquid from a coating liquid tank continuously.
単位時間当たりの塗布面積を増やして、生産性を向上させるためには、基材の搬送速度を上げたり、塗布領域の幅を広げたりする必要がある。
In order to increase the application area per unit time and improve productivity, it is necessary to increase the conveying speed of the base material or widen the application area.
基材の搬送速度を上げたり、塗布領域の幅を広げたりした場合、塗液タンクから塗布ダイに供給する塗液の流量を増す必要がある。
¡When the substrate transport speed is increased or the width of the coating area is increased, it is necessary to increase the flow rate of the coating liquid supplied from the coating liquid tank to the coating die.
また、基板の搬送速度を上げた場合、連続搬送される基材の表面に、所定のタイミングで、塗布領域及び未塗布領域を形成するためには、２つの切替バルブ（供給バルブ、回収バルブ）の切り替えを素早く行う必要がある。
In addition, when the substrate transport speed is increased, two switching valves (a supply valve and a recovery valve) are used to form an application region and an unapplication region at a predetermined timing on the surface of the substrate that is continuously transported. It is necessary to switch quickly.
しかしながら、未塗布領域を形成する際、回収バルブを開いても、塗液タンクから供給される塗液の流量が多く、かつ、回収バルブが開放されている時間が短いため、供給路内の塗液を、スムーズに塗液タンクに回収することが難しくなる。そのため、供給路内の塗液の圧力が一時的に上昇し、一部の塗液が供給バルブから塗布ダイに洩れ出てしまう。その結果、塗布終了端部での塗液の液切れが悪くなり、未塗布領域に塗液が付着するなどの問題が発生する。
However, when the uncoated area is formed, even if the collection valve is opened, the flow rate of the coating liquid supplied from the coating liquid tank is large, and the time during which the collection valve is open is short. It becomes difficult to collect the liquid smoothly in the coating liquid tank. For this reason, the pressure of the coating liquid in the supply path temporarily increases, and a part of the coating liquid leaks from the supply valve to the coating die. As a result, there is a problem in that the coating liquid at the end of application is not completely discharged and the coating liquid adheres to an uncoated area.
本発明は、上記課題に鑑みなされたもので、その主な目的は、連続的に搬送される基材の表面に、塗液を間欠的に塗布して、塗布領域と未塗布領域とを断続的に形成する間欠塗布装置において、塗液タンクから供給する塗液の流量を増やしても、塗布終了端部での液切れ性を損なわず、均一な塗布領域及び未塗布領域を形成することができる間欠塗布装置を提供することにある。
The present invention has been made in view of the above problems, and its main purpose is to intermittently apply a coating solution to the surface of a substrate that is continuously transported to intermittently apply a coating region and an uncoated region. In an intermittent application apparatus that is formed automatically, even if the flow rate of the coating liquid supplied from the coating liquid tank is increased, it is possible to form a uniform coated area and an uncoated area without impairing the liquid breakage at the end of coating. The object is to provide an intermittent coating apparatus.
本発明に係る間欠塗布装置は、連続的に搬送される基材の表面に、塗液を間欠的に塗布して、塗布領域と未塗布領域とを断続的に形成する間欠塗布装置であって、塗液を供給する供給部と、基材の表面に塗液を塗布する塗布部と、供給部から塗布部に塗液を供給する供給路と、供給路の途中から分枝し、供給路内にある塗液を供給部に回収する回収路と、回収路の途中に連結され、該回収路に圧力エアを供給するエア供給路と、を備え、エア供給路は、少なくとも、供給路が開放され、かつ、回収路が閉鎖されているときに、開放されるように制御され、エア供給路から圧力エアが回収路に供給されることを特徴とする。
An intermittent coating apparatus according to the present invention is an intermittent coating apparatus that intermittently forms a coating area and an uncoated area by applying a coating liquid intermittently on the surface of a substrate that is continuously conveyed. A supply unit for supplying the coating liquid, an application unit for applying the coating liquid to the surface of the substrate, a supply path for supplying the coating liquid from the supply part to the application part, and a supply path branched from the middle of the supply path A recovery path for recovering the coating liquid in the supply section, and an air supply path that is connected to the recovery path and supplies pressure air to the recovery path, and the air supply path includes at least the supply path It is controlled to be opened when it is opened and the recovery path is closed, and pressure air is supplied from the air supply path to the recovery path.
本発明によれば、連続的に搬送される基材の表面に、塗液を間欠的に塗布して、塗布領域と未塗布領域とを断続的に形成する間欠塗布装置において、塗液タンクから供給する塗液の流量を増やしても、塗布終了端部での液切れ性を損なわず、均一な塗布領域及び未塗布領域を形成することができる間欠塗布装置を提供することができる。
According to the present invention, in an intermittent coating apparatus that intermittently forms a coating area and an uncoated area by applying a coating liquid intermittently on the surface of a substrate that is continuously conveyed, Even if the flow rate of the coating liquid to be supplied is increased, it is possible to provide an intermittent coating apparatus capable of forming a uniform coated area and an uncoated area without impairing the liquid breakage at the coating end edge.
本発明の実施形態を説明する前に、従来の間欠塗布装置における問題点を説明する。
Prior to describing the embodiment of the present invention, problems in the conventional intermittent coating apparatus will be described.
図４及び図５は、従来の間欠塗布装置１００の一般的な構成を示した図で、図４は、塗布領域を形成しているときの状態を示し、図５は、未塗布領域を形成しているときの状態を示している。
4 and 5 are diagrams showing a general configuration of the conventional intermittent application apparatus 100. FIG. 4 shows a state when an application region is formed, and FIG. 5 shows an unapplied region formed. It shows the state when
図４及び図５に示すように、従来の間欠塗布装置１００において、塗液タンク１１０に収容された塗液１２０は、供給路１２１の途中に設けられたポンプ１１１によって送液されて、塗布ダイ１１５内のマニホールド１１６に供給される。そして、マニホールド１１６に供給された塗液１２０は、塗布ダイ１１５のスリットから吐出されて、基材１３０の表面に塗布膜１３１が形成される。
As shown in FIGS. 4 and 5, in the conventional intermittent coating apparatus 100, the coating liquid 120 stored in the coating liquid tank 110 is fed by a pump 111 provided in the middle of the supply path 121, and is applied to the coating die. 115 is supplied to a manifold 116 in 115. Then, the coating liquid 120 supplied to the manifold 116 is discharged from the slit of the coating die 115, and a coating film 131 is formed on the surface of the base material 130.
ポンプ１１１と塗布ダイ１１５との間の供給路１２１には、供給路１２１を開閉する供給バルブ１１２が設けられている。また、供給路１２１の途中から分枝し、塗液タンク１１０に接続された回収路１２３には、回収路１２３を開閉する回収バルブ１１７が設けられている。なお、供給バルブ１１２及び回収バルブ１１７の開閉は、それぞれ、駆動部（例えば、エアシリンダ等）１１３、１１８によって駆動され、その駆動は、制御部１１９によって制御される。
A supply valve 112 that opens and closes the supply path 121 is provided in the supply path 121 between the pump 111 and the coating die 115. A recovery valve 117 that opens and closes the recovery path 123 is provided in the recovery path 123 branched from the supply path 121 and connected to the coating liquid tank 110. The supply valve 112 and the recovery valve 117 are opened and closed by driving units (for example, air cylinders) 113 and 118, respectively, and the driving is controlled by the control unit 119.
図６は、図４及び図５に示した間欠塗布装置１００において、供給バルブ１１２及び回収バルブ１１７の開閉動作と、間欠塗布により形成された塗布領域Ａ及び未塗布領域Ｂを示した図である。
FIG. 6 is a diagram showing the opening / closing operation of the supply valve 112 and the recovery valve 117 and the application area A and the non-application area B formed by intermittent application in the intermittent application apparatus 100 shown in FIGS. 4 and 5. .
図４及び図６に示すように、駆動部１１３、１１８を駆動することによって、供給バルブ１１２を開放し、回収バルブ１１７を閉鎖する。これにより、塗液タンク１１０から供給された塗液１２０は、塗布ダイ１１５のスリットから吐出されて、基材１３０の表面に塗布領域Ａが形成される。
As shown in FIGS. 4 and 6, by driving the drive units 113 and 118, the supply valve 112 is opened and the recovery valve 117 is closed. As a result, the coating liquid 120 supplied from the coating liquid tank 110 is discharged from the slits of the coating die 115, and a coating region A is formed on the surface of the substrate 130.
次に、図５及び図６に示すように、駆動部１１３、１１８を駆動することによって、供給バルブ１１２を閉鎖し、回収バルブ１１７を開放する。これにより、塗布ダイ１１５のスリットからの塗液１２０の吐出が停止し、基材１３０の表面に非塗布領域が形成されるとともに、供給路１２１内の塗液１２０は、回収路１２３を介して、塗液タンク１１０に回収される。
Next, as shown in FIGS. 5 and 6, by driving the drive units 113 and 118, the supply valve 112 is closed and the recovery valve 117 is opened. Thereby, the discharge of the coating liquid 120 from the slit of the coating die 115 is stopped, a non-coating area is formed on the surface of the base material 130, and the coating liquid 120 in the supply path 121 passes through the recovery path 123. The liquid is collected in the coating liquid tank 110.
しかしながら、生産性を向上させるために、塗液タンク１１０から供給路１２１に供給する塗液１２０の流量を増すと、未塗布領域を形成する際、供給バルブ１１２を閉鎖し、回収バルブ１１７を開放しても、塗液タンク１１０から供給路１２１に供給される塗液１２０を、スムーズに塗液タンク１１０に回収することが難しくなる。そのため、供給路１２１に供給される塗液１２０を塗液タンク１１０に回収しきれず、供給路１２１内の塗液１２０の圧力が一時的に上昇し、一部の塗液１２０が供給バルブ１１２から塗布ダイ１１５に洩れ出てしまう。その結果、塗布終了端部での塗液１２０の液切れが悪くなり、例えば、図６に示すように、未塗布領域Ｂに塗液１２０の付着部Ｐが生じたり、塗布領域Ａの終端部に乱れＢが生じるなどの問題が発生する。
However, if the flow rate of the coating liquid 120 supplied from the coating liquid tank 110 to the supply path 121 is increased in order to improve productivity, the supply valve 112 is closed and the recovery valve 117 is opened when an uncoated area is formed. Even so, it becomes difficult to smoothly collect the coating liquid 120 supplied from the coating liquid tank 110 to the supply path 121 into the coating liquid tank 110. Therefore, the coating liquid 120 supplied to the supply path 121 cannot be completely collected in the coating liquid tank 110, the pressure of the coating liquid 120 in the supply path 121 rises temporarily, and a part of the coating liquid 120 is discharged from the supply valve 112. It leaks into the coating die 115. As a result, the liquid running out of the coating liquid 120 at the end of application is worsened. For example, as shown in FIG. Problems such as the occurrence of disturbance B occur.
特に、基材１３０の搬送速度を上げた場合、回収バルブ１１７が開放されている時間（未塗布領域Ｂを形成している時間）Ｔが非常に短くなる。例えば、基材１３０の搬送速度を６０ｍ／分にした場合、未塗布領域の長さを１０ｍｍとすると、回収バルブ１１７が開放されている時間Ｔは、１０ｍｓｅｃと、非常に短くなる。そのため、短時間に、供給路１２１に供給される塗液１２０を塗液タンク１１０に回収しきれず、供給路１２１内の塗液１２０の圧力が一時的に上昇してしまい、一部の塗液１２０が供給バルブ１１２から塗布ダイ１１５に洩れ出てしまう。その結果、塗布終了端部での塗液１２０の液切れが悪くなり、未塗布領域Ｂに塗液１２０が付着するなどの問題が、より顕著になる。
In particular, when the conveyance speed of the base material 130 is increased, the time T during which the collection valve 117 is opened (the time during which the uncoated area B is formed) T is very short. For example, when the conveyance speed of the base material 130 is 60 m / min and the length of the uncoated area is 10 mm, the time T during which the collection valve 117 is opened is very short, 10 msec. Therefore, the coating liquid 120 supplied to the supply path 121 cannot be collected in the coating liquid tank 110 in a short time, and the pressure of the coating liquid 120 in the supply path 121 temporarily rises, and a part of the coating liquid 120 leaks from the supply valve 112 to the coating die 115. As a result, the problem that the coating solution 120 runs out at the coating end end and the coating solution 120 adheres to the uncoated region B becomes more prominent.
そこで、本願発明者等は、塗液の回収路１２３の途中に、別途、外部から圧力エアを供給するエア供給路を設け、塗布領域を形成しているときに、回収路１２３に圧力エアを供給して、回収路１２３内の塗液を排出することによって、回収路１２３内が塗液で満たされることを回避できれば、回収バルブ１１７を開放したときに、供給路１２１内の塗液が回収路１２３内で閉塞せずに、スムーズに塗液タンク１１０に回収することができると考え、本発明を想到するに至った。
Therefore, the inventors of the present application separately provide an air supply path for supplying pressurized air from the outside in the middle of the coating liquid recovery path 123, and when the application area is formed, the pressure air is supplied to the recovery path 123. If it is possible to avoid filling the recovery path 123 with the coating liquid by supplying and discharging the coating liquid in the recovery path 123, the coating liquid in the supply path 121 is recovered when the recovery valve 117 is opened. The present invention has been conceived based on the assumption that the liquid can be smoothly collected in the coating liquid tank 110 without being blocked in the passage 123.
以下、本発明の実施形態を図面に基づいて詳細に説明する。なお、本発明は、以下の実施形態に限定されるものではない。また、本発明の効果を奏する範囲を逸脱しない範囲で、適宜変更は可能である。
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In addition, this invention is not limited to the following embodiment. Moreover, it can change suitably in the range which does not deviate from the range which has the effect of this invention.
図１及び図２は、本発明の一実施形態における間欠塗布装置の構成を模式的に示した図で、図１は、塗布領域を形成しているときの状態を示し、図２は、未塗布領域を形成しているときの状態を示している。なお、本実施形態における間欠塗布装置は、連続的に搬送される基材の表面に、塗液を間欠的に塗布して、塗布領域と未塗布領域とを断続的に形成する装置である。
1 and 2 are diagrams schematically showing a configuration of an intermittent coating apparatus according to an embodiment of the present invention. FIG. 1 shows a state when a coating region is formed, and FIG. The state when the application region is formed is shown. In addition, the intermittent application apparatus in this embodiment is an apparatus which intermittently forms an application area | region and an unapplication area | region by apply | coating a coating liquid intermittently on the surface of the base material conveyed continuously.
図１及び図２に示すように、本実施形態における間欠塗布装置１は、塗液２０を供給する塗液タンク（供給部）１０と、基材３０の表面に塗液２０を塗布する塗布ダイ（塗布部）１４と、塗液タンク１０から塗布ダイ１４に塗液２０を供給する供給路２１と、供給路２１の途中から分枝し、供給路２１内にある塗液２０を塗液タンク１０に回収する回収路２３と、回収路２３の途中に連結され、回収路２３に圧力エアを供給するエア供給路２４とを備えている。なお、エア供給路２４の一端は、圧力エアを供給するエア供給部（不図示）に接続されている。
As shown in FIGS. 1 and 2, the intermittent coating apparatus 1 according to the present embodiment includes a coating liquid tank (supply unit) 10 that supplies a coating liquid 20 and a coating die that applies the coating liquid 20 to the surface of a substrate 30. (Coating part) 14, a supply path 21 for supplying the coating liquid 20 from the coating liquid tank 10 to the coating die 14, and a branch from the middle of the supply path 21 to apply the coating liquid 20 in the supply path 21 to the coating liquid tank 10, a recovery path 23 for recovery, and an air supply path 24 that is connected to the recovery path 23 and supplies pressure air to the recovery path 23. Note that one end of the air supply path 24 is connected to an air supply unit (not shown) that supplies pressure air.
ポンプ１１と塗布ダイ１４との間の供給路２１には、供給路２１の開閉を制御する供給バルブ１２が設けられている。また、ポンプ１１と塗液タンク１０との間の回収路２３には、回収路２３の開閉を制御する回収バルブ１６が設けられている。また、回収路２３の途中に連結されたエア供給路２４には、エア供給路２４の開閉を制御するエア供給バルブ１８が設けられている。ここで、供給バルブ１２及び回収バルブ１６は、それぞれ、駆動部（例えば、エアシリンダ等）１３、１７によって駆動され、その駆動は、制御部１９によって制御される。
A supply valve 12 that controls opening and closing of the supply path 21 is provided in the supply path 21 between the pump 11 and the coating die 14. A recovery valve 16 that controls opening and closing of the recovery path 23 is provided in the recovery path 23 between the pump 11 and the coating liquid tank 10. Further, an air supply valve 18 that controls the opening and closing of the air supply path 24 is provided in the air supply path 24 that is connected in the middle of the recovery path 23. Here, the supply valve 12 and the recovery valve 16 are respectively driven by drive units (for example, air cylinders) 13 and 17, and the drive is controlled by the control unit 19.
なお、以下の説明では、供給バルブ１２の開閉、回収バルブ１６の開閉、及びエア供給バルブ１８の開閉は、それぞれ、供給路２１の開閉、回収路２３の開閉、及びエア供給路２４の開閉と同じ意味で使われる。
In the following description, the opening and closing of the supply valve 12, the opening and closing of the recovery valve 16, and the opening and closing of the air supply valve 18 are the opening and closing of the supply path 21, the opening and closing of the recovery path 23, and the opening and closing of the air supply path 24, respectively. Used interchangeably.
塗液タンク１０に収容された塗液２０は、供給路２１の途中に設けられたポンプ１１によって送液されて、塗布ダイ１４内のマニホールド１５に供給される。そして、マニホールド１５に供給された塗液２０は、塗布ダイ１４のスリットから吐出されて、基材３０の表面に塗布領域Ａが形成される。
The coating liquid 20 accommodated in the coating liquid tank 10 is fed by a pump 11 provided in the middle of the supply path 21 and supplied to the manifold 15 in the coating die 14. Then, the coating liquid 20 supplied to the manifold 15 is discharged from the slit of the coating die 14 to form a coating region A on the surface of the substrate 30.
図３は、図１及び図２に示した間欠塗布装置１において、供給バルブ１２及び回収バルブ１６の開閉動作と、間欠塗布により形成された塗布領域Ａ及び未塗布領域Ｂを示した図である。
FIG. 3 is a diagram showing the opening / closing operation of the supply valve 12 and the recovery valve 16 and the application area A and the non-application area B formed by intermittent application in the intermittent application apparatus 1 shown in FIGS. 1 and 2. .
図１及び図３に示すように、駆動部１３、１７を駆動することによって、供給バルブ１２を開放し、回収バルブ１６を閉鎖する。これにより、塗液タンク１０から供給された塗液２０は、塗布ダイ１４のスリットから吐出されて、基材３０の表面に塗布膜（塗布領域）Ａが形成される。
As shown in FIGS. 1 and 3, by driving the drive units 13 and 17, the supply valve 12 is opened and the recovery valve 16 is closed. Thereby, the coating liquid 20 supplied from the coating liquid tank 10 is discharged from the slit of the coating die 14, and a coating film (coating region) A is formed on the surface of the base material 30.
このとき、図３に示すように、エア供給バルブ１８を開放することによって、エア供給路２４を介して、圧力エアが回収路２３内に供給される。そのため、回収路２３内にある塗液２０は、圧力エアによって塗液タンク１０に排出され、これにより、回収路２３内は塗液２０で満たされていない状態になる。ここで、回収路２３内が塗液２０で満たされていない状態は、回収路２３内が圧力エアで満たされている状態だけでなく、一部に塗液２０が残っている状態も含む。
At this time, as shown in FIG. 3, by opening the air supply valve 18, the pressure air is supplied into the recovery passage 23 via the air supply passage 24. Therefore, the coating liquid 20 in the collection path 23 is discharged to the coating liquid tank 10 by the pressure air, and thereby the collection path 23 is not filled with the coating liquid 20. Here, the state where the collection path 23 is not filled with the coating liquid 20 includes not only the state where the collection path 23 is filled with pressurized air but also a state where the coating liquid 20 remains in part.
次に、図２及び図３に示すように、駆動部１３、１７を駆動することによって、供給バルブ１２を閉鎖し、回収バルブ１６を開放する。これにより、塗布ダイ１４のスリットからの塗液２０の吐出が停止し、基材３０の表面に非塗布領域Ｂが形成されるとともに、供給路２１内の塗液２０は、回収路２３を介して、塗液タンク１１０に回収される。
Next, as shown in FIGS. 2 and 3, by driving the drive units 13 and 17, the supply valve 12 is closed and the recovery valve 16 is opened. Thereby, the discharge of the coating liquid 20 from the slit of the coating die 14 is stopped, the non-coating area B is formed on the surface of the base material 30, and the coating liquid 20 in the supply path 21 passes through the recovery path 23. And collected in the coating liquid tank 110.
このとき、回収バルブ１６を開放した直後に、回収路１２３内は塗液２０で満たされていない状態になっているため、生産性を向上させるために、塗液タンク１０から供給路２１に供給する塗液２０の流量が増していても、塗液タンク１０から供給路２１に供給される塗液２０を、スムーズに塗液タンク１０に回収することができる。そのため、供給路２１内の塗液２０の圧力が一時的に上昇するのを抑制することができ、塗液２０が供給バルブ１２から塗布ダイ１４に洩れ出るのを防止することができる。その結果、図３に示すように、塗布終了端部での塗液２０の液切れがよくなり、図６に示したような未塗布領域Ｂに塗液２０が付着するなどの問題は発生しない。
At this time, immediately after the collection valve 16 is opened, the inside of the collection path 123 is not filled with the coating liquid 20, so that the supply path 21 is supplied from the coating liquid tank 10 to improve productivity. Even when the flow rate of the coating liquid 20 is increased, the coating liquid 20 supplied from the coating liquid tank 10 to the supply path 21 can be smoothly collected in the coating liquid tank 10. Therefore, the pressure of the coating liquid 20 in the supply path 21 can be prevented from temporarily rising, and the coating liquid 20 can be prevented from leaking from the supply valve 12 to the coating die 14. As a result, as shown in FIG. 3, the coating liquid 20 runs out at the end of application and the problem that the coating liquid 20 adheres to the uncoated area B as shown in FIG. 6 does not occur. .
また、基材３０の搬送速度を上げて、回収バルブ１６が開放されている時間が短くなっても、回収バルブ１６を開放した直後に、回収路１２３内が塗液２０で満たされていない状態になっているため、短時間に、塗液タンク１０から供給路２１に供給される塗液２０を、塗液タンク１０に回収することができる。そのため、供給路２１内の塗液２０の圧力が一時的に上昇するのを抑制することができ、塗液２０が供給バルブ１２から塗布ダイ１４に洩れ出るのを防止することができる。
Moreover, even if the conveyance speed of the base material 30 is increased and the time during which the collection valve 16 is opened is shortened, the collection path 123 is not filled with the coating liquid 20 immediately after the collection valve 16 is opened. Therefore, the coating liquid 20 supplied from the coating liquid tank 10 to the supply path 21 can be collected in the coating liquid tank 10 in a short time. Therefore, the pressure of the coating liquid 20 in the supply path 21 can be prevented from temporarily rising, and the coating liquid 20 can be prevented from leaking from the supply valve 12 to the coating die 14.
なお、本実施形態では、供給バルブ１２を開放して、基材３０の表面に塗布膜３１を形成している間、回収バルブ１６は閉鎖されているため、その間、回収路２３内に圧力エアが供給されていても、ポンプ１１から供給路２１に供給される塗液２０の圧力には影響を与えない。そのため、基材３０の表面に形成される塗布膜３１の膜厚に変動を及ぼすおそれはない。
In the present embodiment, the recovery valve 16 is closed while the supply valve 12 is opened and the coating film 31 is formed on the surface of the base material 30. Even if is supplied, the pressure of the coating liquid 20 supplied from the pump 11 to the supply path 21 is not affected. Therefore, there is no possibility that the film thickness of the coating film 31 formed on the surface of the substrate 30 will vary.
すなわち、本実施形態の間欠塗布装置によれば、塗液タンクから供給する塗液の流量を増やしても、塗布終了端部での液切れ性を損なわず、均一な塗布領域及び未塗布領域を形成することができる。
That is, according to the intermittent coating apparatus of this embodiment, even if the flow rate of the coating liquid supplied from the coating liquid tank is increased, the liquid running out property at the end of coating is not impaired, and a uniform coated area and an uncoated area are formed. Can be formed.
また、本実施形態において、エア供給バルブ１８の開閉のタイミングは、必ずしも、供給バルブ１２の開閉のタイミングと一致させる必要はなく、図３に示すように、少なくとも、供給バルブ１２が開放され、かつ、回収バルブ１６が閉鎖されているときに、エア供給バルブ１８が開放されるように制御すればよい。
Further, in the present embodiment, the opening / closing timing of the air supply valve 18 does not necessarily coincide with the opening / closing timing of the supply valve 12, and at least the supply valve 12 is opened as shown in FIG. The air supply valve 18 may be controlled to be opened when the recovery valve 16 is closed.
また、本実施形態では、図３に示すように、供給バルブ１２の開閉のタイミングと、回収バルブ１６の開閉のタイミングとを一致させたが、必ずしも、両者を一致させる必要はない。例えば、塗布開始端部における塗布膜の盛り上がりを解消するために、供給バルブ１２を開放するタイミングに対して、回収バルブ１１７を閉鎖するタイミングを少し遅らせることがある。この場合、エア供給バルブ１８が開放されているときに、回収バルブ１６が開放されると、供給路２１内にも圧力エアが供給されるおそれがある。そのため、エア供給バルブ１８は、少なくとも、回収バルブ１６が開放されている間は、閉鎖されるように制御することが好ましい。
In this embodiment, as shown in FIG. 3, the opening / closing timing of the supply valve 12 and the opening / closing timing of the recovery valve 16 are matched, but it is not always necessary to match both. For example, in order to eliminate the rising of the coating film at the coating start end, the timing for closing the collection valve 117 may be slightly delayed with respect to the timing for opening the supply valve 12. In this case, if the recovery valve 16 is opened while the air supply valve 18 is opened, the pressure air may be supplied into the supply path 21. Therefore, the air supply valve 18 is preferably controlled to be closed at least while the recovery valve 16 is open.
以上、本発明を好適な実施形態により説明してきたが、こうした記述は限定事項ではなく、もちろん、種々の改変が可能である。
As mentioned above, although this invention has been demonstrated by suitable embodiment, such description is not a limitation matter and of course various modifications are possible.
１ 間欠塗布装置
１０ 塗液タンク （供給部）
１１ ポンプ
１２ 供給バルブ
１３、１７ 駆動部
１４ 塗布ダイ（塗布部）
１５ マニホールド
１６ 回収バルブ
１８ エア供給バルブ
１９ 制御部
２０ 塗液
２１ 供給路
２３ 回収路
２４ エア供給路
３０ 基材
３１ 塗布膜 1 Intermittent coating device
10 Coating liquid tank (Supply part)
11 Pump
12 Supply valve
13, 17 Drive unit
14 Application die (application part)
15 Manifold
16 Collection valve
18 Air supply valve
19 Control unit
20 Coating liquid
21 Supply path
23 Collection path
24 Air supply path
30 base material
31 Coating film
１０ 塗液タンク （供給部）
１１ ポンプ
１２ 供給バルブ
１３、１７ 駆動部
１４ 塗布ダイ（塗布部）
１５ マニホールド
１６ 回収バルブ
１８ エア供給バルブ
１９ 制御部
２０ 塗液
２１ 供給路
２３ 回収路
２４ エア供給路
３０ 基材
３１ 塗布膜 1 Intermittent coating device
10 Coating liquid tank (Supply part)
11 Pump
12 Supply valve
13, 17 Drive unit
14 Application die (application part)
15 Manifold
16 Collection valve
18 Air supply valve
19 Control unit
20 Coating liquid
21 Supply path
23 Collection path
24 Air supply path
30 base material
31 Coating film
Claims (4)
- 連続的に搬送される基材の表面に、塗液を間欠的に塗布して、塗布領域と未塗布領域とを断続的に形成する間欠塗布装置であって、
前記塗液を供給する供給部と、
前記基材の表面に塗液を塗布する塗布部と、
前記供給部から前記塗布部に塗液を供給する供給路と、
前記供給路の途中から分枝し、前記供給路内にある塗液を前記供給部に回収する回収路と、
前記回収路の途中に連結され、該回収路に圧力エアを供給するエア供給路と、
を備え、
前記エア供給路は、少なくとも、前記供給路が開放され、かつ、前記回収路が閉鎖されているときに、開放されるように制御され、前記エア供給路から圧力エアが前記回収路に供給される、間欠塗布装置。 An intermittent coating apparatus that intermittently forms a coating region and an uncoated region by intermittently coating a coating liquid on the surface of a substrate that is continuously conveyed,
A supply unit for supplying the coating liquid;
An application part for applying a coating liquid to the surface of the substrate;
A supply path for supplying a coating liquid from the supply unit to the application unit;
Branching from the middle of the supply path, a recovery path for recovering the coating liquid in the supply path to the supply unit;
An air supply path connected in the middle of the recovery path and supplying pressure air to the recovery path;
With
The air supply path is controlled to be opened at least when the supply path is open and the recovery path is closed, and pressure air is supplied from the air supply path to the recovery path. An intermittent application device. - 前記エア供給路は、少なくとも、前記回収路が開放されているときは、閉鎖されるように制御される、請求項１に記載の間欠塗布装置。 The intermittent application apparatus according to claim 1, wherein the air supply path is controlled to be closed at least when the recovery path is open.
- 前記供給路の開閉は、供給バルブによって制御され、
前記回収路の開閉は、回収バルブによって制御され、
前記空気供給路の開閉は、エア供給バルブによって制御される、請求項１に記載の間欠塗布装置。 The opening and closing of the supply path is controlled by a supply valve,
The opening and closing of the recovery path is controlled by a recovery valve,
The intermittent coating apparatus according to claim 1, wherein opening and closing of the air supply path is controlled by an air supply valve. - 前記供給路を開放し、かつ、前記回収路を閉鎖することによって、前記塗布領域が形成され、
前記供給路を閉鎖し、かつ、前記回収路を開放することによって、前記未塗布領域が形成されるとともに、前記供給路内にある塗液が前記供給部に回収される、請求項１に記載の間欠塗布装置。 The application area is formed by opening the supply path and closing the recovery path,
2. The non-application area is formed by closing the supply path and opening the recovery path, and the coating liquid in the supply path is recovered by the supply unit. Intermittent application equipment.
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| JP2018-017330 | 2018-02-02 | ||
| JP2018017330A JP2019130513A (en) | 2018-02-02 | 2018-02-02 | Intermittent coating apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004344695A (en) * | 2003-05-20 | 2004-12-09 | Dainippon Printing Co Ltd | Device for supplying liquid to application nozzle |
| JP2012216375A (en) * | 2011-03-31 | 2012-11-08 | Dainippon Screen Mfg Co Ltd | Coating device and coating film formation system |
| JP2014188449A (en) * | 2013-03-27 | 2014-10-06 | Nec Corp | Intermittent coating apparatus and intermittent coating method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004344695A (en) * | 2003-05-20 | 2004-12-09 | Dainippon Printing Co Ltd | Device for supplying liquid to application nozzle |
| JP2012216375A (en) * | 2011-03-31 | 2012-11-08 | Dainippon Screen Mfg Co Ltd | Coating device and coating film formation system |
| JP2014188449A (en) * | 2013-03-27 | 2014-10-06 | Nec Corp | Intermittent coating apparatus and intermittent coating method |
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