JP5114037B2 - Coating apparatus and coating method - Google Patents

Coating apparatus and coating method Download PDF

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JP5114037B2
JP5114037B2 JP2006261381A JP2006261381A JP5114037B2 JP 5114037 B2 JP5114037 B2 JP 5114037B2 JP 2006261381 A JP2006261381 A JP 2006261381A JP 2006261381 A JP2006261381 A JP 2006261381A JP 5114037 B2 JP5114037 B2 JP 5114037B2
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Prior art keywords
coating
gantry
web
die
coating apparatus
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JP2008080212A (en
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健央 山田
和也 小島
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Fujifilm Corp
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Fujifilm Corp
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Priority to JP2006261381A priority Critical patent/JP5114037B2/en
Priority to KR1020097005163A priority patent/KR20090057011A/en
Priority to PCT/JP2007/068262 priority patent/WO2008038563A1/en
Priority to CN2007800353270A priority patent/CN101516527B/en
Priority to TW096135259A priority patent/TWI403366B/en
Publication of JP2008080212A publication Critical patent/JP2008080212A/en
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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
    • B05C5/0254—Coating heads with slot-shaped outlet
    • B05C5/0262—Coating heads with slot-shaped outlet adjustable in width, i.e. having lips movable relative to each other in order to modify the slot width, e.g. to close it
    • 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
    • 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
    • B05C5/0254—Coating heads with slot-shaped outlet
    • 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
    • B05D1/26—Processes for applying liquids or other fluent materials performed by applying the liquid or other fluent material from an outlet device in contact with, or almost in contact with, the surface
    • 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
    • B05C5/0245—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 for applying liquid or other fluent material to a moving work of indefinite length, e.g. to a moving web

Description

本発明は、塗布装置及び塗布方法に関するものであり、特に、写真感光乳化剤、磁性液、視野角向上膜、反射防止膜を形成するための溶液、カラーフィルター用顔料液、表面保護膜を形成するための溶液等の塗布液をプラスチックフィルム、紙、金属箔等の支持体に塗布するための塗布装置及び塗布方法に関するものである。   The present invention relates to a coating apparatus and a coating method, and in particular, forms a photographic photosensitive emulsifier, a magnetic liquid, a viewing angle improving film, a solution for forming an antireflection film, a pigment liquid for a color filter, and a surface protective film. The present invention relates to a coating apparatus and a coating method for coating a coating solution such as a solution for a coating on a support such as a plastic film, paper, or metal foil.

移動する支持体（ウエブ等）の表面に塗布液を塗布するための方法として、ダイコーティング法が知られている。近年は、ダイコーティング法により形成される膜の高性能化等に伴い、従来よりも薄い潤滑膜厚が２０〔μｍ〕以下の領域で、高精度な積層膜を形成する技術が要求されている。このような薄い膜を均一に形成するためには、塗布装置における精度、特に、先端リップとウエブとのクリアランスが非常に重要となる。   A die coating method is known as a method for applying a coating solution to the surface of a moving support (such as a web). In recent years, with the improvement of the performance of a film formed by a die coating method, a technique for forming a highly accurate laminated film in a region where the lubricant film thickness is thinner than 20 μm is required. . In order to form such a thin film uniformly, accuracy in the coating apparatus, in particular, the clearance between the tip lip and the web is very important.

このクリアランスは、環境温度のみならず塗布装置の製造における影響を強く受けるものであり、塗布されるウエブ幅全体にわたり均一にする必要があることから、最終的には微調整を行う必要がある。特許文献１及び特許文献２には、塗布ダイと塗布ダイを固定する架台とを複数の押しボルト、引きボルトで連結し、これらの押しボルト、引きボルトを調整することにより、先端リップとウエブとのクリアランスを調整する方法が開示されている。
特開平６−１４２５８８号公報 特開２００５−２７０８７７号公報 This clearance is strongly influenced not only by the environmental temperature but also in the production of the coating apparatus, and it is necessary to make it uniform over the entire width of the coated web. In Patent Document 1 and Patent Document 2, a coating die and a base for fixing the coating die are connected by a plurality of push bolts and pull bolts, and by adjusting these push bolts and pull bolts, the tip lip and the web A method for adjusting the clearance is disclosed.
JP-A-6-142588 JP 2005-270877 A

しかしながら、特許文献１及び特許文献２に開示されている発明は、先端リップとウエブとのクリアランスの調整は可能であるが、押しボルト及び引きボルトのボルトによる調整であることから、一般にボルトは遊び等を有しているため正確な位置に調整を行うことが困難であり、調整の再現性が乏しいため、偶発的な成功になるまでボルトによる調整を繰り返すことになる。また、このようなボルトによる調整では、塗布装置における回転体等の振動を受け、塗布を行っている途中でボルトがゆるみ、クリアランスが変化してしまい塗布液を均一に塗布できないといった問題や、ウエブを破損するといった問題などの実用上の問題が多い。   However, in the inventions disclosed in Patent Document 1 and Patent Document 2, the clearance between the tip lip and the web can be adjusted. However, since the adjustment is made by the push bolt and the pull bolt, the bolt is generally free of play. Therefore, it is difficult to make an adjustment at an accurate position, and the reproducibility of the adjustment is poor. Therefore, the adjustment by the bolt is repeated until accidental success. In addition, such adjustment using a bolt causes problems such as a problem that the bolt is loosened during application and the clearance changes during application while the application liquid is not uniformly applied. There are many practical problems such as the problem of damaging.

本発明は、上記事情に鑑みてなされたものであり、クリアランスの位置調整を容易に行うことができ、かつ、塗布工程におけるクリアランスの変化が少ない塗布装置及び塗布方法を提供するものである。   The present invention has been made in view of the above circumstances, and provides a coating apparatus and a coating method capable of easily adjusting the position of the clearance and having little change in the clearance in the coating process.

請求項１に記載の発明は、移動しているウエブ上に、架台に固定された塗布ダイの先端リップから塗布液を塗布する塗布装置において、前記塗布ダイと接合される架台の接合面の接合領域に、前記塗布ダイと前記架台とを結合するためのボルトを貫通させるための穴または切欠きを有するシムを複数配置し、配置された前記シムの各々の厚さを調整することにより、塗布ダイの先端リップにおける真直度を調整することを特徴とする塗布装置である。   The invention according to claim 1 is a coating apparatus for applying a coating liquid from a tip lip of a coating die fixed to a gantry on a moving web, and joining a joint surface of the gantry to be joined to the coating die. In the region, a plurality of shims having holes or notches for penetrating bolts for connecting the coating die and the gantry are disposed, and the thickness of each of the disposed shims is adjusted, thereby coating A coating apparatus that adjusts the straightness of a tip lip of a die.

請求項２に記載の発明は、前記接合領域は、前記架台の接合面において塗布ダイの方向に凸となっていることを特徴とする請求項１に記載の塗布装置である。   The invention according to claim 2 is the coating apparatus according to claim 1, wherein the joining region is convex in the direction of the coating die on the joining surface of the gantry.

請求項３に記載の発明は、前記シムは、ウエブの移動方向に垂直な方向における幅が、前記ボルト直径の１．２倍〜７倍であることを特徴とする請求項１または２に記載の塗布装置である。   The invention according to claim 3 is characterized in that the width of the shim in a direction perpendicular to the moving direction of the web is 1.2 to 7 times the bolt diameter. It is a coating device.

請求項４に記載の発明は、前記架台の接合面に配置されるシムが、４個以上であり、かつ使用される前記シムのウエブ移動方向に垂直な方向における幅の合計が、前記架台の接合面のウエブ移動方向に垂直な方向における幅方向の合計の半分以下であることを特徴とする請求項１から３のいずれかに記載の塗布装置である。   In the invention according to claim 4, the number of shims arranged on the joint surface of the gantry is four or more, and the total width in the direction perpendicular to the web movement direction of the shim used is that of the gantry. The coating apparatus according to any one of claims 1 to 3, wherein the coating apparatus has a half or less of a total in a width direction in a direction perpendicular to the web moving direction of the joining surface.

請求項５に記載の発明は、前記架台は、塗布ダイから前記架台を固定する固定台に向かう方向に形成されている複数の柱が存在しており、前記接合領域はすべて前記柱の端上となる領域に形成されていることを特徴とする請求項１から４のいずれかに記載の塗布装置である。   In the invention according to claim 5, the pedestal includes a plurality of columns formed in a direction from the coating die to a fixing table for fixing the gantry, and all the joining regions are located on the ends of the columns. The coating apparatus according to claim 1, wherein the coating apparatus is formed in a region to be

請求項６に記載の発明は、前記柱の他方の端となる領域における面のすべて、又は、両端を除くすべての面が、前記固定台と密着していることを特徴とする請求項５に記載の塗布装置である。 Invention according to claim 6, all surfaces in the region serving as the other end of said post, or, all surfaces except for both ends, to claim 5, wherein the in close contact with the fixing base It is a coating device of description .

請求項７に記載の発明は、前記シムは、ＳＵＳ鋼により構成されていることを特徴とする請求項１から６のいずれかに記載の塗布装置である。   A seventh aspect of the present invention is the coating apparatus according to any one of the first to sixth aspects, wherein the shim is made of SUS steel.

請求項８に記載の発明は、前記塗布ダイの先端リップに近接して配置されたウエブを巻きつけたバックアップローラを回転させ、前記バックアップローラの回転により移動している前記ウエブ上に、請求項１から７のいずれかに記載の塗布装置の先端リップより塗布液を供給することを特徴とする塗布方法である。   According to an eighth aspect of the present invention, the backup roller around which the web disposed close to the tip lip of the coating die is rotated, and the web is moved by the rotation of the backup roller. 8. A coating method, wherein a coating liquid is supplied from a tip lip of the coating apparatus according to any one of 1 to 7.

以上より、本発明における塗布装置及び塗布方法によれば、クリアランスの調整が容易に行うことができ、また、塗布工程におけるクリアランスの変化が少ないため、ウエブ上に安定的に均一に塗布液を塗布することができる。   As described above, according to the coating apparatus and the coating method of the present invention, the clearance can be easily adjusted, and since the change in the clearance in the coating process is small, the coating liquid can be stably and uniformly applied on the web. can do.

〔塗布装置〕
本発明に係る塗布装置の実施の形態を図１に基づき説明する。 [Coating equipment]
An embodiment of a coating apparatus according to the present invention will be described with reference to FIG.

図１は、本実施の形態における塗布装置のウエブ幅方向に垂直に切断した断面図であり、図２は、本実施の形態における塗布装置の斜視図である。   FIG. 1 is a cross-sectional view cut perpendicularly to the web width direction of the coating apparatus in the present embodiment, and FIG. 2 is a perspective view of the coating apparatus in the present embodiment.

本実施の形態における塗布装置は、バックアップローラ１４に連続走行するウエブ１５が巻きつけられており、塗布ダイ１２は、このバックアップローラ１４に近接して配置され、塗布ダイ１２からは塗布液１６がウエブ１５上に塗布される構成になっている。   In the coating apparatus according to the present embodiment, a web 15 that continuously runs is wound around a backup roller 14, and the coating die 12 is disposed close to the backup roller 14, and the coating liquid 16 is applied from the coating die 12. It is configured to be applied on the web 15.

塗布ダイ１２は、直接、もしくはＳＵＳ鋼により構成されているシム１３を介し架台１１と接合されている。シム１３の中央には、塗布ダイ１２を架台１１に固定するための穴または切欠きが形成され、塗布ダイ１２には、架台１１を固定するためのねじ穴が形成されている。塗布ダイ１２は、この穴または切欠きを介しボルト２２によって、架台１１に固定されている。更に、架台１１は、固定台２３に固定されている。尚、本実施の形態では、ＳＵＳ鋼からなるシム１３を用いたが、経時変化の少ない材料であって、剛性の高い材料であれば、特に限定されるものではない。   The coating die 12 is joined to the gantry 11 directly or via a shim 13 made of SUS steel. A hole or notch for fixing the coating die 12 to the gantry 11 is formed in the center of the shim 13, and a screw hole for fixing the gantry 11 is formed in the coating die 12. The coating die 12 is fixed to the gantry 11 with bolts 22 through the holes or notches. Further, the gantry 11 is fixed to the fixed base 23. In the present embodiment, the shim 13 made of SUS steel is used. However, the material is not particularly limited as long as it is a material with little change with time and a material having high rigidity.

塗布液１６をウエブ１５に均一に塗布するためには、前述のとおり、バックアップローラ１４と塗布ダイ１２の先端リップ１２ａとの間隔、即ち、クリアランスが均一であることが望ましい。このため複数のシム１３を架台１１と塗布ダイ１２の間に挿入し、各々の挿入されるシム１３の厚さを変えることにより塗布ダイ１２の先端リップ１２ａの先端の真直度を調整し、バックアップローラ１４と塗布ダイ１２の先端リップ１２ａとの間隔が均一になるように調整するものである。具体的に図３、図４に基づき説明する。図３は、本実施の形態における塗布装置のウエブ幅方向に平行に切断した断面図であり、図４はこの拡大図である。図３に示すように、塗布ダイ１２と架台１１とは複数のシム１３を介し接合されている。塗布ダイ１２の先端リップ１２ａの真直度を調整するためには、各々のシム１３の膜厚の異なるものを挿入することにより調整を行う。各々のシム１３の設置される位置は、架台１１に設けられている強度確保のための柱２１の塗布ダイ１２側の端面に相当する位置である。具体的には、架台１１を固定するための固定台２３と塗布ダイ１２との間に設けられた架台１１の強度確保のための柱２１の塗布ダイ１２側の端面において、その柱２１の端の領域のみ接触の再現性を上げるための凸面が形成されており、この領域に、シム１３を介し架台１１に塗布ダイ１２を固定した構成のものである。架台１１の柱２１の端上において、塗布ダイ１２が固定されているため、塗布ダイ１２の重量等により架台１１が変形することはなく、塗布ダイ１２の先端リップ１２ａの真直度を安定的に高めることができるものである。   In order to uniformly apply the coating liquid 16 to the web 15, it is desirable that the distance between the backup roller 14 and the tip lip 12a of the coating die 12, that is, the clearance is uniform as described above. For this reason, a plurality of shims 13 are inserted between the gantry 11 and the coating die 12, and the straightness of the tip of the tip lip 12a of the coating die 12 is adjusted by changing the thickness of each of the inserted shims 13, thereby providing a backup. Adjustment is made so that the distance between the roller 14 and the tip lip 12a of the coating die 12 is uniform. This will be specifically described with reference to FIGS. FIG. 3 is a cross-sectional view of the coating apparatus according to the present embodiment cut in parallel to the web width direction, and FIG. 4 is an enlarged view of this. As shown in FIG. 3, the coating die 12 and the gantry 11 are joined via a plurality of shims 13. In order to adjust the straightness of the tip lip 12a of the coating die 12, adjustment is performed by inserting different shim 13 thicknesses. The position where each shim 13 is installed is a position corresponding to the end face on the application die 12 side of the column 21 for securing the strength provided in the gantry 11. Specifically, at the end face of the column 21 for securing the strength of the mount 11 provided between the fixing table 23 for fixing the mount 11 and the coating die 12, the end of the column 21 is fixed. A convex surface for improving the reproducibility of the contact is formed only in the region, and the coating die 12 is fixed to the gantry 11 via the shim 13 in this region. Since the coating die 12 is fixed on the end of the column 21 of the gantry 11, the gantry 11 is not deformed by the weight of the coating die 12, and the straightness of the tip lip 12 a of the coating die 12 is stably stabilized. It can be raised.

一方、図３に示すように、架台１１の柱２１の他方の端の面は、両端の柱２１を除き固定台２３の表面と接触し接触面２５となっているため、塗布ダイ１２の重量等の及ぼす力はすべて、架台１１の柱２１を介し、固定台２３の表面にかかる。従って、塗布ダイ１２の加重による架台１１の変形は極めて少なく、固定台２３を変形しない材料で構成することにより、塗布ダイ１２の先端リップ１２ａの真直度は変化することがない。本実施の形態では、振動等による移動を防止するため架台１１と固定台２３とは４本のボルトにより固定されている。尚、架台１１の柱２１の他方の端の面のすべての面を固定台２３に表面と接触させてもよい。   On the other hand, as shown in FIG. 3, the surface of the other end of the column 21 of the gantry 11 is in contact with the surface of the fixed table 23 except for the columns 21 at both ends, thereby forming a contact surface 25. All the forces exerted on the surface of the fixed base 23 through the column 21 of the base 11 are all applied. Accordingly, deformation of the gantry 11 due to the weight of the coating die 12 is extremely small, and the straightness of the tip lip 12a of the coating die 12 does not change by configuring the fixing base 23 with a material that does not deform. In the present embodiment, the gantry 11 and the fixing base 23 are fixed by four bolts in order to prevent movement due to vibration or the like. Note that all the surfaces of the other end of the column 21 of the gantry 11 may be brought into contact with the surface of the fixed base 23.

以上の構成とすることにより、シム１３による調整を一旦行えば、長期間そのままの状態で使用することが可能である。   With the above configuration, once adjustment by the shim 13 is performed, it can be used as it is for a long time.

発明者らの検討の結果では、架台１１の柱２１の塗布ダイ１２の幅方向の幅（ウエブ幅方向の幅）は、ボルト呼び径の１．４倍以上であり、かつ２０〔ｍｍ〕以上、１００〔ｍｍ〕以下であることが望ましい。架台１１が変形しないためには、ボルト呼び径の１．４倍以上かつ２０〔ｍｍ〕以上の幅が必要であるからである。尚、架台１１に柱２１を形成することなく、架台１１の全体をバルク状に形成した場合では、架台１１の重量は非常に重いものとなり、移動や微調整等を行う際に困難になるとともに、架台１１自身の自重により変形する場合があるため、構造としては適当とはいいがたい。従って、柱の幅は、１００〔ｍｍ〕以下であることが望ましい。   As a result of the study by the inventors, the width in the width direction of the coating die 12 of the column 21 of the gantry 11 (the width in the web width direction) is 1.4 times or more of the nominal diameter of the bolt and is 20 [mm] or more. , 100 [mm] or less is desirable. This is because in order not to deform the gantry 11, it is necessary to have a width of 1.4 times the nominal diameter of the bolt and 20 mm or more. In addition, when the whole base 11 is formed in a bulk shape without forming the column 21 on the base 11, the weight of the base 11 becomes very heavy, and it becomes difficult to perform movement, fine adjustment and the like. Since the frame 11 may be deformed by its own weight, the structure is not suitable. Therefore, the width of the column is preferably 100 [mm] or less.

更に、この柱２１の塗布ダイ１２側の端の面にシム１３を配置し塗布ダイ１２の先端リップ１２ａの真直度の調整を行うため、設置されるシム１３の数は４個以上必要となる。シムの数が３個以下では、シムによる先端リップ１２ａの真直度の微妙な調整を行うことができないからである。   Furthermore, in order to adjust the straightness of the tip lip 12a of the coating die 12 by arranging the shim 13 on the end surface of the column 21 on the coating die 12 side, the number of shims 13 to be installed is four or more. . This is because if the number of shims is three or less, the straightness of the tip lip 12a by the shim cannot be finely adjusted.

また、通常は架台１１には切欠き２６が設けられるが、架台１１の柱２１は、塗布ダイ１２より固定台２３まで貫く構造で支えているため、柱２１の端の接触面２５以外の面に形成される構成が望ましい。尚、このような切欠き２６が形成されない架台１１の構造もあり、この場合は、固定台２３と架台１１は広い領域において接触面２５を形成することとなる。   In addition, although the notch 26 is usually provided in the gantry 11, the column 21 of the gantry 11 is supported by a structure that penetrates from the coating die 12 to the fixing table 23, so that a surface other than the contact surface 25 at the end of the column 21. The structure formed in is desirable. There is also a structure of the gantry 11 in which the notch 26 is not formed. In this case, the fixed pedestal 23 and the gantry 11 form the contact surface 25 in a wide area.

〔塗布方法〕
次に、図１に基づき、本発明に係る塗布方法について説明する。本発明に係る塗布方法は、前述した本発明に係る塗布装置を用いる。具体的には、塗布ダイ１２に供給された塗布液１６は、塗布ダイ１２内に形成されたスリットを介し、塗布ダイ１２の先端リップ１２ａに供給される。塗布ダイ１２の先端リップ１２ａは、バックアップローラ１４により、連続走行しているウエブ１５に近接して所定のクリアランスで配置されており、塗布液１６は塗布ダイ１２の先端リップ１２ａとウエブ１５の間において、一種のビードを形成しながら、ウエブ１５に塗布される。塗布される際のクリアランスは、ウエブ１５の幅全体にわたり、３〔μｍ〕以下であることが望ましく、この範囲内に収まるようにシム１３により塗布ダイ１２の先端リップ１２ａの真直度が調整されている。 [Coating method]
Next, the coating method according to the present invention will be described with reference to FIG. The coating method according to the present invention uses the above-described coating apparatus according to the present invention. Specifically, the coating liquid 16 supplied to the coating die 12 is supplied to the tip lip 12 a of the coating die 12 through a slit formed in the coating die 12. The tip lip 12a of the coating die 12 is arranged with a predetermined clearance in the vicinity of the continuously running web 15 by the backup roller 14, and the coating liquid 16 is placed between the tip lip 12a of the coating die 12 and the web 15. In (1), it is applied to the web 15 while forming a kind of bead. The clearance at the time of coating is desirably 3 [μm] or less over the entire width of the web 15, and the straightness of the tip lip 12a of the coating die 12 is adjusted by the shim 13 so as to be within this range. Yes.

尚、塗布される塗布液１６の粘度は、０．１〜１０００〔ｐ〕（０．０１〜１００〔Ｐａ・ｓ〕）の範囲が好ましく、より好ましくは、１〜１００〔Ｐ〕（０．１〜１０〔Ｐａ・ｓ〕）が好ましい。   In addition, the range of 0.1-1000 [p] (0.01-100 [Pa * s]) is preferable, and, as for the viscosity of the coating liquid 16 apply | coated, More preferably, it is 1-100 [P] (0. 1 to 10 [Pa · s]) is preferable.

塗布液１６の塗布されたウエブ１５は、乾燥処理、カレンダー処理が施された後、一旦ロール状に巻き取られ、ロール状のまま加熱又はＵＶ照射により硬化処理される。硬化処理されたウエブ１５は、所定の幅に細長く裁断されて写真感光材料や磁気記録媒体、ＰＳ版、光学機能性フィルム等の製品となる。   The web 15 to which the coating liquid 16 is applied is subjected to a drying process and a calendering process, and then is wound into a roll shape and cured by heating or UV irradiation while maintaining the roll shape. The cured web 15 is cut into a predetermined width to be a product such as a photographic material, a magnetic recording medium, a PS plate, or an optical functional film.

尚、本発明に係る塗布装置及び塗布方法により、液晶、磁性材料、写真感光剤、有機ＥＬ、色素材料、粘着材料、導電性材料、絶縁性材料等を塗布することができる。   In addition, liquid crystal, a magnetic material, a photographic photosensitive agent, an organic EL, a dye material, an adhesive material, a conductive material, an insulating material, and the like can be applied by the coating apparatus and the coating method according to the present invention.

以上、本発明に係る塗布装置及び塗布方法について詳細に説明したが、本発明は、以上の例には限定されず、本発明の要旨を逸脱しない範囲において、各種の改良や変形を行うことが可能である。   As described above, the coating apparatus and the coating method according to the present invention have been described in detail. However, the present invention is not limited to the above examples, and various improvements and modifications can be made without departing from the gist of the present invention. Is possible.

次に、本発明の実施例と比較例とを対比した試験結果を説明する。   Next, test results comparing the examples of the present invention and comparative examples will be described.

（１）実施例の塗布ダイ及び架台の条件を次のようにした。   (1) The conditions of the coating die and the gantry of the example were as follows.

（塗布ダイ）
塗布ダイとして全長１４００ｍｍ、有効塗布幅１２５０ｍｍのダイを用いた。 (Coating die)
As the coating die, a die having a total length of 1400 mm and an effective coating width of 1250 mm was used.

（架台）
架台として全長１２００ｍｍのものを使用し、止めボルトの呼び径及び本数、柱の数および本数、等を変更した架台を作成し、塗布ダイを搭載、リップ先端の真直度を測定した。 (Frame)
A base having a total length of 1200 mm was used as a base, and a base with a changed nominal diameter and number of retaining bolts, number of columns and number, etc. was prepared, a coating die was mounted, and the straightness of the lip tip was measured.

（２）一方、比較例の塗布ダイ及び架台の条件を次のようにした。   (2) On the other hand, the conditions of the coating die and the gantry of the comparative example were as follows.

（塗布ダイ）
実施例と同様に、塗布ダイとして全長１４００ｍｍ、有効塗布幅１２５０ｍｍのダイを用いた。 (Coating die)
As in the example, a die having a total length of 1400 mm and an effective coating width of 1250 mm was used as the coating die.

（架台）
架台として実施例と同様の架台を作成した。ただし塗布ダイの固定および真直度
調整はシムを用いずに、押し引きボルトによって行なう構造とした。 (Frame)
A gantry similar to the example was created as a gantry. However, the application die was fixed and the straightness was adjusted using a push-pull bolt without using a shim.

（３）真直度の測定等は次のように実施した。   (3) The straightness was measured as follows.

〔真直度の測定〕
真直度は塗布ダイをバックアップロールに正対させ、ダイリップ先端とバックアップロールの間隔をシックネスゲージにより測定し、該間隔の最大値−最小値により求めた。 (Measurement of straightness)
The straightness was determined by measuring the distance between the die lip tip and the backup roll with a thickness gauge with the coating die facing the backup roll, and calculating the maximum-minimum value of the distance.

〔リニアリティ〕
シム又は押し引きボルトの調整量に対するリップ先端の移動量の比率をリニアリティとして定義した。例えば、シムＡ、Ｂの厚みをｔＡ、ｔＢ、そのときのリップ先端の初期値に対する移動量をｄＡ、ｄＢとしたとき、リニアリティ＝（ｄＢ−ｄＡ）／（ｔＢ−ｔＡ）×100（％）で定義される。 [Linearity]
The ratio of the amount of movement of the lip tip to the amount of adjustment of the shim or push-pull bolt was defined as linearity. For example, when the thicknesses of the shims A and B are tA and tB, and the movement amounts with respect to the initial value of the lip tip at that time are dA and dB, linearity = (dB−dA) / (tB−tA) × 100 (%) Defined by

〔試験結果〕
上記の実施例と比較例との試験結果を表図１に示した。評価は、リニアリティと真直度の両方が良い結果のものを◎、リニアリティと真直度の何れかが良い場合を△○、または○とし、両方とも悪い結果の場合を×とした。 〔Test results〕
The test results of the above examples and comparative examples are shown in FIG. In the evaluation, ◎ indicates that both linearity and straightness are good, △ indicates that either linearity or straightness is good, and ○ indicates that both are bad.

表図１から分かるように、シムによって真直度を調整した本発明の実施例１〜６は、リニアリティが６５％以上で、ダイリップ先端とバックアップロールの間隔が最大でも５．２μｍであり、良好なリニアリティ及び真直度を得ることができた。実施例１〜６のなかでも特に、シムのウエブの移動方向に垂直な方向における幅が、ボルト直径の１．２倍〜７倍（図表１の「倍率」）で、かつ架台の柱本数が４本以上である条件を満足する実施例１、３、５は◎で良い結果であった。   As can be seen from FIG. 1, Examples 1 to 6 of the present invention in which the straightness is adjusted by shims have a linearity of 65% or more and a maximum distance between the die lip tip and the backup roll of 5.2 μm, which is good. Linearity and straightness could be obtained. Especially in Examples 1 to 6, the width in the direction perpendicular to the moving direction of the shim web is 1.2 to 7 times the bolt diameter (“Magnification” in Chart 1), and the number of columns of the gantry is Examples 1, 3, and 5 satisfying the condition of 4 or more were good results with ◎.

これに対して、押しボルトによって真直度を調整した比較例の場合には、リニアリティが５５％と実施例６よりも小さく、ダイリップ先端とバックアップロールの間隔が１２．０μｍと大きく、リニアリティ及び真直度ともに悪い結果であった。   On the other hand, in the case of the comparative example in which the straightness is adjusted by the push bolt, the linearity is 55%, which is smaller than that of Example 6, the distance between the die lip tip and the backup roll is as large as 12.0 μm, and the linearity and the straightness. Both were bad results.

本発明の実施の形態に係る塗布装置のウエブに垂直な方向の断面図Sectional drawing of the direction perpendicular | vertical to the web of the coating device which concerns on embodiment of this invention 本発明の実施の形態に係る塗布装置の斜視図The perspective view of the coating device which concerns on embodiment of this invention 本発明の実施の形態に係る塗布装置のウエブに平行な方向の断面図Sectional drawing of the direction parallel to the web of the coating device which concerns on embodiment of this invention 本発明の実施の形態に係る塗布装置のウエブに平行な方向の断面の拡大図The enlarged view of the cross section of the direction parallel to the web of the coating device which concerns on embodiment of this invention 本発明の別の実施の形態に係る塗布装置のウエブに平行な方向の断面図Sectional drawing of the direction parallel to the web of the coating device which concerns on another embodiment of this invention. 本発明の実施例と比較例の試験結果を示す表図Table showing test results of Examples and Comparative Examples of the present invention

符号の説明Explanation of symbols

１１…架台、１２…塗布ダイ、１２ａ…先端リップ、１３…シム、１４…バックアップローラ、１５…ウエブ、１６…塗布液、２１…柱、２２…ボルト、２３…固定台、２５…接触面、２６…切欠き   DESCRIPTION OF SYMBOLS 11 ... Base, 12 ... Coating die, 12a ... Tip lip, 13 ... Shim, 14 ... Backup roller, 15 ... Web, 16 ... Coating liquid, 21 ... Column, 22 ... Bolt, 23 ... Fixing base, 25 ... Contact surface, 26 ... Notch

Claims (8)

移動しているウエブ上に、架台に固定された塗布ダイの先端リップから塗布液を塗布する塗布装置において、
前記塗布ダイと接合される架台の接合面の接合領域に、前記塗布ダイと前記架台とを結合するためのボルトを貫通させるための穴または切欠きを有するシムを複数配置し、
配置された前記シムの各々の厚さを調整することにより、塗布ダイの先端リップにおける真直度を調整することを特徴とする塗布装置。 In a coating apparatus that applies a coating liquid from the tip lip of a coating die fixed to a gantry on a moving web,
A plurality of shims having holes or notches for penetrating bolts for connecting the coating die and the gantry are disposed in the joining region of the joining surface of the gantry to be joined to the coating die,
The coating apparatus characterized by adjusting the straightness of the tip lip of the coating die by adjusting the thickness of each of the arranged shims. 前記接合領域は、前記架台の接合面において塗布ダイの方向に凸となっていることを特徴とする請求項１に記載の塗布装置。   The coating apparatus according to claim 1, wherein the joining region is convex in the direction of the coating die on the joining surface of the gantry. 前記シムは、ウエブの移動方向に垂直な方向における幅が、前記ボルト直径の１．２倍〜７倍であることを特徴とする請求項１または２に記載の塗布装置。   The coating apparatus according to claim 1 or 2, wherein the shim has a width in a direction perpendicular to a moving direction of the web of 1.2 to 7 times the bolt diameter. 前記架台の接合面に配置されるシムが、４個以上であり、かつ使用される前記シムのウエブ移動方向に垂直な方向における幅の合計が、前記架台の接合面のウエブ移動方向に垂直な方向における幅方向の合計の半分以下であることを特徴とする請求項１から３のいずれかに記載の塗布装置。   There are four or more shims arranged on the joining surface of the gantry, and the total width in the direction perpendicular to the web movement direction of the shim used is perpendicular to the web movement direction of the joining surface of the gantry. The coating apparatus according to any one of claims 1 to 3, wherein the coating apparatus is half or less of a total of the width direction in the direction. 前記架台は、塗布ダイから前記架台を固定する固定台に向かう方向に形成されている複数の柱が存在しており、前記接合領域はすべて前記柱の端上となる領域に形成されていることを特徴とする請求項１から４のいずれかに記載の塗布装置。   The pedestal has a plurality of columns formed in a direction from the coating die toward a fixed pedestal for fixing the pedestal, and all of the joining regions are formed in regions on the ends of the columns. The coating apparatus according to claim 1, wherein: 前記柱の他方の端となる領域における面のすべて、又は、両端を除くすべての面が、前記固定台と密着していることを特徴とする請求項５に記載の塗布装置。 The coating apparatus according to claim 5 , wherein all of the surfaces in the region serving as the other end of the column or all surfaces except both ends are in close contact with the fixing base. 前記シムは、ＳＵＳ鋼により構成されていることを特徴とする請求項１から６のいずれかに記載の塗布装置。   The coating apparatus according to claim 1, wherein the shim is made of SUS steel. 前記塗布ダイの先端リップに近接して配置されたウエブを巻きつけたバックアップローラを回転させ、
前記バックアップローラの回転により移動している前記ウエブ上に、請求項１から７のいずれかに記載の塗布装置の先端リップより塗布液を供給することを特徴とする塗布方法。 Rotating a backup roller around which a web arranged close to the tip lip of the coating die is wound,
A coating method, comprising: supplying a coating liquid from a tip lip of a coating apparatus according to any one of claims 1 to 7 onto the web that is moved by the rotation of the backup roller.
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TW200827044A (en) 2008-07-01
JP2008080212A (en) 2008-04-10
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CN101516527A (en) 2009-08-26
TWI403366B (en) 2013-08-01
CN101516527B (en) 2012-01-11

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