JP2018061928A - Coating head, coating applicator using coating head, and adjustment method of coating head - Google Patents
Coating head, coating applicator using coating head, and adjustment method of coating head Download PDFInfo
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- 238000000576 coating method Methods 0.000 title claims abstract description 133
- 239000011248 coating agent Substances 0.000 title claims abstract description 128
- 238000000034 method Methods 0.000 title claims description 24
- 239000007788 liquid Substances 0.000 claims description 26
- 239000010408 film Substances 0.000 description 7
- 238000003860 storage Methods 0.000 description 5
- 239000010410 layer Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
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Abstract
Description
本発明は、フィルムや不織布、紙などの両面に塗液を塗布する塗布ヘッドと、この塗布ヘッドを用いた塗布装置、および塗布ヘッドの調整方法に関する。 The present invention relates to a coating head for coating a coating liquid on both surfaces such as a film, a nonwoven fabric, and paper, a coating apparatus using the coating head, and a method for adjusting the coating head.
ウェブの両面に塗膜を付ける方法は、逐次塗布法と同時塗布法に大別されるが、ウェブの片面ずつ塗膜を付ける逐次塗布法はタクトタイムが長く、必要なスペースも大きく、生産効率が悪いことから、近年は同時塗布法が主流になりつつある。 The method of applying the coating on both sides of the web is roughly divided into the sequential coating method and the simultaneous coating method. The sequential coating method in which the coating is applied to each side of the web has a long tact time, requires a large space, and has a high production efficiency. However, the simultaneous application method is becoming mainstream in recent years.
同時塗布法は、ウェブを挟んで両側にロールやナイフ、ダイなどを配した塗布ヘッドを用いて塗布を行うことが知られており、いずれの塗布ヘッドを選択するのかは、塗布する塗液の性質や、所望する塗膜の厚み精度、コストなどを鑑みて選定される。 The simultaneous coating method is known to perform coating using a coating head with rolls, knives, dies, etc. arranged on both sides across the web. Which coating head is selected depends on the coating liquid to be coated. It is selected in view of properties, desired coating thickness accuracy, cost, and the like.
このような塗布ヘッドとして特許文献１には、ドープ浴と呼ぶ塗液を貯める貯液部をウェブが通過した後、ウェブを挟んでウェブ面と直交する方向に水平に相対して設置した計量・平滑化治具と呼ぶリップの間を通過させて塗膜を形成する塗布ヘッドが開示されている。また、特許文献１には、所定のクリアランスを有してウェブを挟んで対峙する二つのダイの間を通過させて塗膜を形成する塗布ヘッドも開示されている。 As such an application head, Patent Document 1 discloses a metering / installing device that is installed horizontally relative to a direction perpendicular to the web surface across the web after the web has passed through a liquid storage section that stores a coating liquid called a dope bath. An application head that forms a coating film by passing between lips called a smoothing jig is disclosed. Patent Document 1 also discloses an application head that forms a coating film by passing between two dies facing each other with a predetermined clearance between webs.
また、特許文献２には、２種の塗材を両面に同時塗布するために、特許文献１における貯液部と計量部からなる部分とダイとを組み合わせたような塗布ヘッドが開示されている。この塗布ヘッドによる塗布で、基材と接する下層への塗布は貯液部と計量部が緩やかな傾斜で繋がる部分が担い、上層（表層）への塗布はダイのような部分が担っている。 Patent Document 2 discloses a coating head in which a part consisting of a liquid storage part and a metering part and a die in Patent Document 1 are combined in order to simultaneously apply two types of coating materials on both sides. . In the application by the application head, the application to the lower layer in contact with the substrate is carried by the portion where the liquid storage part and the measuring part are connected with a gentle inclination, and the application to the upper layer (surface layer) is carried by the part like a die.
特許文献１や特許文献２における貯液部と計量部を通過させてウェブの両面に同時に塗膜を形成する塗布ヘッドでは、相対して設置したリップ面間の距離で、ウェブへの塗液の塗布量が決まるため、ウェブ両面に同じ量で、かつウェブ幅で均一に塗布するためには、リップ面間の距離を厳密に一定にする必要がある。 In the coating head that forms the coating film on both sides of the web at the same time by passing the liquid storage unit and the metering unit in Patent Document 1 and Patent Document 2, the distance between the lip surfaces installed oppositely, Since the application amount is determined, in order to apply the same amount to both sides of the web and uniformly with the web width, it is necessary to make the distance between the lip surfaces strictly constant.
そのような、相対する面と面の間の間隙を一定に調整する方法として、例えば特許文献３には、ダイを構成するブロックの少なくとも一方に、スリットとスリットを挟むようにボルト−ナットをはめ込む溝を有し、このボルト−ナットの締緩によりブロックを弾性変形させてリップを押し引きすることで、ダイ流路を構成し相対する面間の間隙を調節する調整手段を備えたダイが開示されている。 As such a method for adjusting the gap between the opposing surfaces to be constant, for example, Patent Document 3 discloses that a bolt-nut is inserted into at least one of the blocks constituting the die so as to sandwich the slit. Disclosed is a die having a groove and adjusting means for adjusting a gap between opposing faces by forming a die flow path by elastically deforming the block by tightening the bolt-nut and pushing and pulling the lip. Has been.
特許文献３に開示されたような、ダイ流路を構成し相対する面間の間隙を調整する手段としてボルトを使用する方法は、間隙の調整のための操作性を重視するために、ダイを構成するブロック部材本体を変形しやすい構造としているので、そのような変形しやすいダイ本体を高精度で加工することは困難であることから、間隙を調整することが前提となり、作業が煩雑になる。 As disclosed in Patent Document 3, a method of using a bolt as a means for adjusting a gap between opposing surfaces that constitute a die flow path has been described in order to emphasize the operability for adjusting the gap. Since the block member main body is easily deformed, it is difficult to process such a deformable die main body with high accuracy. Therefore, it is assumed that the gap is adjusted, and the work becomes complicated. .
また、ウェブへの塗布は近年特に要求精度が高く、サブミクロンオーダーでの高精度な調整が必要となる場合があるが、このような場合に、ボルトの押し引きで調整するような調整では、ボルトが持つ遊びにより正確な位置に調整を行うことが困難であり、また例えトルク管理等で管理をしたとしても調整の再現性が乏しいため、所望の間隙分布となるまで、繰り返し調整を行うことになる。 In addition, the application to the web has a particularly high required accuracy in recent years, and there is a case where high-precision adjustment in the submicron order may be necessary. In such a case, in the adjustment that is adjusted by pushing and pulling the bolt, It is difficult to adjust to the correct position due to the play of the bolt, and even if it is managed by torque management etc., the reproducibility of adjustment is poor, so it is necessary to adjust repeatedly until the desired gap distribution is achieved become.
そのため、特許文献１に示すウェブの両面に同時に塗膜を形成する塗布ヘッドのような、リップ面間の間隙でウェブ両面への塗布量が決まる塗布ヘッドでは、リップ面間の間隙の高精度な調整に特許文献３に開示されたような間隙の調整手段や方法を適用するのは適当ではなく、リップ面間の間隙を高精度で再現性の高い調整が可能な新たな塗布ヘッドやその間隙の調整方法が求められている。 Therefore, in a coating head in which the coating amount on both sides of the web is determined by the gap between the lip surfaces, such as a coating head that simultaneously forms coatings on both sides of the web shown in Patent Document 1, the gap between the lip surfaces is highly accurate. It is not appropriate to apply the gap adjusting means or method disclosed in Patent Document 3 to the adjustment, and a new coating head capable of adjusting the gap between the lip surfaces with high accuracy and high reproducibility, and the gap. There is a need for an adjustment method.
そのため本発明の目的は、このような、貯液部と計量部を通過させてウェブの両面に同時に塗膜を形成する塗布に用いる塗布ヘッドにおいて、高精度に加工された塗布ヘッドであっても、極めて高精度で、かつ再現性も高いリップ面間の間隙の調整ができる塗布ヘッドや、その塗布ヘッドを用いた塗布装置、およびその塗布ヘッドのリップ面間の間隙の調整方法を提供することにある。 Therefore, an object of the present invention is such a coating head used for coating that forms a coating film on both sides of the web at the same time by passing through the liquid storage unit and the metering unit. To provide a coating head capable of adjusting the gap between the lip surfaces with extremely high accuracy and high reproducibility, a coating apparatus using the coating head, and a method for adjusting the gap between the lip surfaces of the coating head. It is in.
上記目的を達成する本発明の塗布ヘッドは、第１リップ面を有する第１部材と第２リップ面を有する第２部材とを備え、前記第１リップ面と前記第２リップ面が所定の間隙をあけて相対するように、前記第１部材と前記第２部材が配された塗布ヘッドであって、
前記第１部材の前記第１リップ面の背面側に配された第１プレートであって、その長手方向が前記第１リップ面の長手方向に略平行となるように伸び、その長手方向に垂直な断面が略矩形状であり、その長手方向に間隔をあけて並ぶ複数のボルトにより前記第１部材に締結された第１プレートを備えている。
The coating head of the present invention that achieves the above object includes a first member having a first lip surface and a second member having a second lip surface, and the first lip surface and the second lip surface are in a predetermined gap. An application head in which the first member and the second member are arranged so as to face each other,
A first plate disposed on a back side of the first lip surface of the first member, the longitudinal direction of the first plate extending substantially parallel to the longitudinal direction of the first lip surface, and perpendicular to the longitudinal direction; The cross section is substantially rectangular and includes a first plate fastened to the first member by a plurality of bolts arranged at intervals in the longitudinal direction.
また、本発明の塗布ヘッドは、前記第２部材の前記第２リップ面の背面側に配された第２プレートであって、その長手方向が前記第２リップ面の長手方向に略平行となるように伸び、その長手方向に垂直な断面が略矩形状であり、その長手方向に間隔をあけて並ぶ複数のボルトにより前記第２部材に締結された第２プレートを備えたものが好ましい。 The coating head of the present invention is a second plate disposed on the back side of the second lip surface of the second member, and the longitudinal direction thereof is substantially parallel to the longitudinal direction of the second lip surface. The cross section perpendicular to the longitudinal direction is substantially rectangular and has a second plate fastened to the second member by a plurality of bolts arranged at intervals in the longitudinal direction.
さらに、本発明の塗布ヘッドは、前記第１プレートの前記第１リップ面の長手方向に対する断面２次モーメントが前記第１部材の断面２次モーメントよりも小さい、および／または、前記第２プレートの前記第２リップ面の長手方向に対する断面２次モーメントが前記第２部材の断面２次モーメントよりも小さいものが好ましい。 Furthermore, in the coating head of the present invention, the second moment of section with respect to the longitudinal direction of the first lip surface of the first plate is smaller than the second moment of section of the first member, and / or It is preferable that the second moment of section with respect to the longitudinal direction of the second lip surface is smaller than the second moment of section of the second member.
上記目的を達成する本発明の塗布装置は、本発明の塗布ヘッドを備え、前記第１リップ面と前記第２リップ面との間を通過するウェブの両面に塗布液を塗布する塗布装置である。 The coating apparatus of the present invention that achieves the above object is a coating apparatus that includes the coating head of the present invention and that coats a coating liquid on both sides of a web that passes between the first lip surface and the second lip surface. .
また、本発明の塗布装置は、前記第１プレートの長手方向の長さ、および／または、前記第２プレートの長手方向の長さが、前記ウェブの幅方向の長さ以上であることが好ましい。 In the coating apparatus of the present invention, it is preferable that the length in the longitudinal direction of the first plate and / or the length in the longitudinal direction of the second plate is equal to or greater than the length in the width direction of the web. .
上記目的を達成する本発明の塗布ヘッドのリップ面間の間隙の調整方法は、本発明の塗布ヘッドの相対するリップ面間の間隙の調整方法であって、
前記第１部材と前記第１プレートとの間の１箇所以上に厚さを調整したシムを挿入し、前記シムを挿入した状態で前記第１部材と前記第１プレートとを前記ボルトで締結して、第１部材を変形させ、
前記第２リップ面を基準として前記第１リップ面を変形させて、第１リップ面と第２リップ面との間隙を第１リップ面および第２リップ面の長手方向に渡って一定となるように調整する方法である。
The method for adjusting the gap between the lip surfaces of the coating head of the present invention that achieves the above object is a method for adjusting the gap between the opposite lip surfaces of the coating head of the present invention,
A shim having an adjusted thickness is inserted at one or more locations between the first member and the first plate, and the first member and the first plate are fastened with the bolts with the shim inserted. The first member is deformed,
The first lip surface is deformed with reference to the second lip surface so that the gap between the first lip surface and the second lip surface is constant over the longitudinal direction of the first lip surface and the second lip surface. It is a method to adjust to.
上記目的を達成する本発明の別方法の塗布ヘッドのリップ面間の間隙の調整方法は、本発明の塗布ヘッドの相対するリップ面間の間隙の調整方法であって、
前記第１部材と前記第１プレートとの間の１箇所以上に厚さを調整したシムを挿入し、前記シムを挿入した状態で前記第１部材と前記第１プレートとを前記ボルトで締結して、第１部材を変形させ、
前記第２部材と前記第２プレートとの間の１箇所以上に厚さを調整したシムを挿入し、前記シムを挿入した状態で前記第２部材と前記第２プレートとを前記ボルトで締結して、第２部材を変形させ、
前記第１リップ面および前記第２リップ面を互いに変形させて、第１リップ面と第２リップ面との間隙を第１リップ面および第２リップ面の長手方向に渡って一定となるように調整する方法である。
The method for adjusting the gap between the lip surfaces of the coating head of the present invention, which achieves the above object, is a method for adjusting the gap between the lip surfaces of the coating head of the present invention,
A shim having an adjusted thickness is inserted at one or more locations between the first member and the first plate, and the first member and the first plate are fastened with the bolts with the shim inserted. The first member is deformed,
A shim having an adjusted thickness is inserted at one or more locations between the second member and the second plate, and the second member and the second plate are fastened with the bolts with the shim inserted. The second member is deformed,
The first lip surface and the second lip surface are deformed with each other so that the gap between the first lip surface and the second lip surface is constant over the longitudinal direction of the first lip surface and the second lip surface. It is a method to adjust.
本発明によれば、相対するリップ面間にウェブを通過させることでその両面に同時に塗液を塗布する塗布ヘッドにおいて、高精度加工により製作した塗布ヘッドのリップ面間の間隙をさらに調整して長手方向に渡って一定にする必要があってもその微調整が可能であり、かつ再現性もある、ウェブ両面に同時に塗液の塗布が可能な塗布ヘッドと、そのヘッドを用いた塗布装置、さらにその塗布ヘッドの調整方法を提供することができる。 According to the present invention, in a coating head that simultaneously applies a coating liquid to both surfaces by passing a web between opposing lip surfaces, the gap between the lip surfaces of the coating head manufactured by high-precision processing is further adjusted. Even if it is necessary to make it constant over the longitudinal direction, fine adjustment is possible and reproducibility, a coating head capable of simultaneously coating a coating liquid on both sides of the web, and a coating apparatus using the head, Furthermore, a method for adjusting the coating head can be provided.
図１は、本発明に係る塗布ヘッド１を含むウェブの両面に塗液６０を塗布する塗布装置９０を示す断面概略図であり、図３は、その塗布装置９０に搭載する塗布ヘッド１の上面図を示している。これらを用いてまず、本発明に係るウェブの両面に塗液を塗布する塗布装置９０について説明する。 FIG. 1 is a schematic cross-sectional view showing a coating apparatus 90 that applies a coating liquid 60 to both surfaces of a web including the coating head 1 according to the present invention, and FIG. 3 shows an upper surface of the coating head 1 mounted on the coating apparatus 90. The figure is shown. First, a coating apparatus 90 that applies a coating solution to both surfaces of a web according to the present invention will be described.
まず、図１、図３に示す塗布ヘッド１は、第１部材２と第２部材３からなり、第１部材２は第１リップ面２０、第２部材３は第２リップ面３０をそれぞれ有し、また、この塗布ヘッド１は、第１部材２の第１リップ面２０の背面側に第１プレート２５を有している。この第１プレート２５は、図１に示す通り断面形状が略矩形状であり、また図３に示す通り第１部材２の第１リップ面２０の長手方向と略平行になるように伸びている。 First, the coating head 1 shown in FIGS. 1 and 3 includes a first member 2 and a second member 3. The first member 2 has a first lip surface 20, and the second member 3 has a second lip surface 30. In addition, the coating head 1 includes a first plate 25 on the back side of the first lip surface 20 of the first member 2. The first plate 25 has a substantially rectangular cross-sectional shape as shown in FIG. 1, and extends so as to be substantially parallel to the longitudinal direction of the first lip surface 20 of the first member 2 as shown in FIG. .
図３は、塗布ヘッド１の第１部材２と第１プレート２５との間に、第１部材２の第１リップ面２０の長手方向の中央付近でシム２７を挟み、この状態で、第１部材２と第１プレート２５とをボルト２６で締結した状態を図示している。第１部材２と第１プレート２５との間にシム２７を挟まない状態でボルト２６を締結すると、第１リップ面２０と第１プレート２５とは略平行であるが、第１部材２と第１プレート２５との間にシム２７を挟んだ状態でボルト２６を締結すると、第１リップ面２０を有する第１部材２と第１プレート２５が互いに変形し、第１部材２の変形に伴って第１リップ面２０も変形する。 In FIG. 3, a shim 27 is sandwiched between the first member 2 of the coating head 1 and the first plate 25 in the vicinity of the center of the first lip surface 20 of the first member 2 in the longitudinal direction. The state which fastened the member 2 and the 1st plate 25 with the volt | bolt 26 is illustrated. When the bolt 26 is fastened without the shim 27 sandwiched between the first member 2 and the first plate 25, the first lip surface 20 and the first plate 25 are substantially parallel to each other. When the bolt 26 is fastened with the shim 27 sandwiched between the first plate 25 and the first member 2 having the first lip surface 20 and the first plate 25 are deformed, the first member 2 is deformed. The first lip surface 20 is also deformed.
図１に示す塗布装置９０は、塗布ヘッド１を用いてウェブ５０の両面に塗液６０を塗布する塗布装置である。その塗布装置９０で、塗布ヘッド１は、第１部材２の第１リップ面２０と第２部材３の第２リップ面３０が所定の間隙ｔを空けて相対して、ウェブ５０の搬送方向の面と直交するように配されている。また、塗布装置９０において、塗布ヘッド１は、第１部材２の第１リップ面２０と第２部材３の第２リップ面３０の上方に塗液６０を貯留している。 A coating apparatus 90 shown in FIG. 1 is a coating apparatus that applies the coating liquid 60 to both surfaces of the web 50 using the coating head 1. In the coating apparatus 90, the coating head 1 causes the first lip surface 20 of the first member 2 and the second lip surface 30 of the second member 3 to face each other with a predetermined gap t in the conveyance direction of the web 50. It is arranged to be orthogonal to the surface. In the coating apparatus 90, the coating head 1 stores the coating liquid 60 above the first lip surface 20 of the first member 2 and the second lip surface 30 of the second member 3.
次に、塗布ヘッド１を備えた図１に示す塗布装置９０を用いたウェブ５０への塗液６０の塗布について詳しく説明する。 Next, application | coating of the coating liquid 60 to the web 50 using the coating device 90 shown in FIG.
まず塗布の前には予め、相対する塗布ヘッド１の第１部材２と第２部材３の間にウェブ５０を通すことで、第１リップ面２０と第２リップ面３０の間を通過するようする。それから第１リップ面２０と第２リップ面３０を所定の間隙ｔに調整した後に、塗布ヘッド１の第１部材２と第２部材３に囲まれる領域に塗液６０を貯留する。それから、ウェブ５０を塗布ヘッド１の鉛直上方から下方に向けて搬送することで、ウェブ５０を塗布ヘッド１の鉛直上方から第１リップ面２０と第２リップ面３０の間を通過させて、ウェブ５０の両面に塗液６０を塗布する。このとき、ウェブ５０への塗液６０の塗布量は、塗液６０を計量する第１リップ面２０と第２リップ面３０の間隙ｔによって決まる。 First, before coating, the web 50 is passed between the first member 2 and the second member 3 of the opposing coating head 1 so that the web 50 passes between the first lip surface 20 and the second lip surface 30. To do. Then, after the first lip surface 20 and the second lip surface 30 are adjusted to a predetermined gap t, the coating liquid 60 is stored in a region surrounded by the first member 2 and the second member 3 of the coating head 1. Then, the web 50 is conveyed from vertically above the coating head 1 to below, thereby allowing the web 50 to pass between the first lip surface 20 and the second lip surface 30 from above the coating head 1. The coating liquid 60 is apply | coated to 50 both surfaces. At this time, the amount of the coating liquid 60 applied to the web 50 is determined by the gap t between the first lip surface 20 and the second lip surface 30 where the coating liquid 60 is measured.
ここで、第１部材２と第１プレート２５の間にシム２７を挿入してボルト２６を締結する前の塗布ヘッド１について、その上面図である図２を用いて説明する。 Here, the coating head 1 before inserting the shim 27 between the first member 2 and the first plate 25 and fastening the bolt 26 will be described with reference to FIG.
図２に示すように、塗布ヘッド１は、第１部材２と第１プレート２５、およびこれらを締結する長手方向に間隔をあけて並ぶ複数のボルト２６を有しており、ボルト２６を緩めることで、第１部材２と第１プレート２５との間に空間を形成することができる構造になっている。この構造とすることで、ボルト２６を緩めて形成される第１部材２と第１プレート２５との間の空間の長手方向の所望の位置に、厚みを調整したシムを挿入してからボルト２６を締結することで、第１部材２と第１プレート２５を互いに変形させて、第１部材２の第１リップ面２０の長手方向の形状を所望の形状に変更、調節することができ、第１リップ面２０と第２リップ面３０のリップ面間の間隙ｔを長手方向に渡って一定に調整することができる。 As shown in FIG. 2, the coating head 1 has a first member 2 and a first plate 25, and a plurality of bolts 26 arranged at intervals in the longitudinal direction for fastening them, and loosens the bolts 26. Thus, a space can be formed between the first member 2 and the first plate 25. By adopting this structure, the bolt 26 is inserted after the shim having the adjusted thickness is inserted into a desired position in the longitudinal direction of the space between the first member 2 and the first plate 25 formed by loosening the bolt 26. The first member 2 and the first plate 25 can be deformed with each other to change and adjust the longitudinal shape of the first lip surface 20 of the first member 2 to a desired shape. The gap t between the lip surfaces of the first lip surface 20 and the second lip surface 30 can be adjusted to be constant over the longitudinal direction.
図２に示す塗布ヘッドは、第１部材２の第１リップ面２０の背面側に第１プレート２５を有する構成となっているが、これに加えて、図４に示すように、第２部材３の第２リップ面３０の背面側に第２プレート３５を有してもよい。第２プレート３５は、断面形状が略矩形状で、第２リップ面３０の長手方向と略平行になるように伸びており、第２部材３と第２プレート３５を長手方向に間隔を空けて複数のボルト３６で締結されるものである。第２プレート３５を有することで、第２リップ面３０の長手方向の形状も所望の形状に変更、調節することができるようになり、第１リップ面２０と第２リップ面３０のリップ面間の間隙を長手方向に渡ってより一定に調整することができる。 The application head shown in FIG. 2 has a configuration in which a first plate 25 is provided on the back side of the first lip surface 20 of the first member 2. In addition, as shown in FIG. The second plate 35 may be provided on the back side of the third second lip surface 30. The second plate 35 has a substantially rectangular cross section and extends so as to be substantially parallel to the longitudinal direction of the second lip surface 30, and the second member 3 and the second plate 35 are spaced apart in the longitudinal direction. It is fastened with a plurality of bolts 36. By having the second plate 35, the shape of the second lip surface 30 in the longitudinal direction can be changed and adjusted to a desired shape, and the gap between the lip surfaces of the first lip surface 20 and the second lip surface 30 can be adjusted. The gap can be adjusted more uniformly in the longitudinal direction.
前述の第１部材２、第１リップ面２０および第１プレート２５の変形の仕方と同様に、第２部材３と第２プレート３５との間にシム３７を挟まない状態でボルト３６を締結すると、第２リップ面３０と第２プレート３５とは略平行であるが、第２部材３と第２プレート３５との間にシム３７を挟んだ状態でボルト３６を締結すると、第２リップ面３０を有する第２部材３と第２プレート３５が互いに変形し、第２部材３の変形に伴い第２リップ面３０も変形する。 When the bolt 36 is fastened without the shim 37 being sandwiched between the second member 3 and the second plate 35, in the same manner as the first member 2, the first lip surface 20 and the first plate 25 are deformed. The second lip surface 30 and the second plate 35 are substantially parallel. However, when the bolt 36 is fastened with the shim 37 sandwiched between the second member 3 and the second plate 35, the second lip surface 30. The second member 3 and the second plate 35 having the above are deformed with each other, and the second lip surface 30 is also deformed with the deformation of the second member 3.
塗布ヘッド１の第１部材２と第１プレート２５の間の空間に所定の厚みのシム２７を挿入するためには、第１部材２と第１プレート２５とは平面で接触することがよく、挿入したシム２７の厚みに応じて第１リップ面２０の長手方向の形状を順次変化させるためには、第１プレート２５の断面形状は略矩形状が好ましい。同様の理由で、第２プレート３５の長手方向に垂直な断面も略矩形状であることが好ましい。 In order to insert the shim 27 having a predetermined thickness into the space between the first member 2 and the first plate 25 of the coating head 1, the first member 2 and the first plate 25 are preferably in contact with each other in a plane. In order to sequentially change the longitudinal shape of the first lip surface 20 in accordance with the thickness of the inserted shim 27, the cross-sectional shape of the first plate 25 is preferably substantially rectangular. For the same reason, the cross section perpendicular to the longitudinal direction of the second plate 35 is also preferably substantially rectangular.
塗布ヘッド１の第１部材２と第１プレート２５を締結するための長手方向に並ぶ複数のボルト２６は、それぞれどの位置にあっても構わないが、第１リップ面２０の長手方向の形状を調整するための厚みを調整したシム２７を、第１部材２と第１プレート２５の間の空間のどの位置にも挿入できるように、長手方向における複数のボルト２６の位置は、第１プレート２５の長手方向の両端付近と中央付近を含む複数の位置に配することが好ましい。同様の理由で、第２部材３と第２プレート３５を締結するための長手方向に並ぶ複数のボルト３６は、第２プレート３５の長手方向の両端付近と中央付近を含む複数の位置に配することが好ましい。 The plurality of bolts 26 arranged in the longitudinal direction for fastening the first member 2 of the coating head 1 and the first plate 25 may be in any position, but the shape of the first lip surface 20 in the longitudinal direction is not limited. The positions of the plurality of bolts 26 in the longitudinal direction are such that the shim 27 with the adjusted thickness can be inserted into any position in the space between the first member 2 and the first plate 25. It is preferable to arrange at a plurality of positions including the vicinity of both ends in the longitudinal direction and the vicinity of the center. For the same reason, the plurality of bolts 36 arranged in the longitudinal direction for fastening the second member 3 and the second plate 35 are disposed at a plurality of positions including the vicinity of both ends and the center of the second plate 35 in the longitudinal direction. It is preferable.
次に、図２に示す塗工ヘッド１を、図３に示すように第１部材２と第１プレート２５との間の空間に所定の厚みのシム２７を挿入することで、第１リップ面２０の長手方向の形状を変形させて、塗布ヘッド１の第１リップ面２０と第２リップ面３０とのリップ面間の間隙ｔを長手方向に渡って一定に調整する方法について詳しく説明する。 Next, the coating head 1 shown in FIG. 2 is inserted into the space between the first member 2 and the first plate 25 as shown in FIG. A method for deforming the shape in the longitudinal direction of 20 and adjusting the gap t between the lip surfaces of the first lip surface 20 and the second lip surface 30 of the coating head 1 to be constant over the longitudinal direction will be described in detail.
図２に示すように、塗布ヘッド１の第１部材２の第１リップ面２０は、第２部材３の第２リップ面３０が長手方向の中心付近が第１リップ面２０から離れるような形状で僅かに湾曲しているのに対して、長手方向で略一直線状である。そのため、第１リップ面２０と第２リップ面３０とのリップ面間の間隙ｔは、塗布ヘッド１の長手方向の両端付近で狭く、中央付近で広くなっている。このリップ面間の間隙ｔを長手方向に渡って一定にするには、第１リップ面２０の長手方向の形状を第２リップ面３０の長手方向の形状に、または第２リップ面３０の長手方向の形状を第１リップ面２０の長手方向の形状に、倣うように変形させる必要がある。ここでは、第１部材２の第１リップ面２０の背面側に第１プレート２５を有することで、長手方向の形状を変形させることができる第１リップ面２０を、第２リップ面３０に倣うように調整する。 As shown in FIG. 2, the first lip surface 20 of the first member 2 of the coating head 1 is shaped so that the second lip surface 30 of the second member 3 is separated from the first lip surface 20 in the vicinity of the center in the longitudinal direction. Is slightly curved, but is substantially straight in the longitudinal direction. Therefore, the gap t between the lip surfaces of the first lip surface 20 and the second lip surface 30 is narrow near both ends in the longitudinal direction of the coating head 1 and wide near the center. In order to make the gap t between the lip surfaces constant in the longitudinal direction, the longitudinal shape of the first lip surface 20 is changed to the longitudinal shape of the second lip surface 30 or the longitudinal direction of the second lip surface 30. It is necessary to deform the shape of the direction so as to follow the shape of the first lip surface 20 in the longitudinal direction. Here, by having the first plate 25 on the back side of the first lip surface 20 of the first member 2, the first lip surface 20 whose shape in the longitudinal direction can be deformed follows the second lip surface 30. Adjust as follows.
第１リップ面２０の長手方向の形状は略一直線状であるため、これを、長手方向の中央付近が第１リップ面２０から離れるように湾曲しており相対する第２リップ面３０に倣わせるためには、第１リップ面２０の長手方向の中央付近を第２リップ面３０に近付けるように変形させて湾曲させる必要がある。そこで、第１部材２と第１プレート２５を締結する複数のボルト２６を緩めて第１部材２と第１プレート２５の間に空間を作り、その空間に所定の厚みのシム２７を、長手方向の中央に挿入してボルト２６を締結する。すると、図２では互いに接していた第１部材２と第１プレート２５が、図３に示すように、長手方向の中央付近で互いに離れるように変形する。このとき、第１部材２の第１プレート２５との接触面の反対面にあたる第１リップ面２０は、相対する第２リップ面３０に近付くように変形して、第１リップ面２０と第２リップ面３０のリップ面間の間隙ｔを長手方向に渡って一定にすることができる。このように第１部材２の第１リップ面２０の背面側に第１プレート２５を有することで、第１リップ面２０の長手方向の形状を変形することができ、そのことにより第１リップ面２０と第２リップ面３０とのリップ面間の間隙ｔを一定にすることができる。 Since the shape of the first lip surface 20 in the longitudinal direction is substantially straight, it is curved so that the vicinity of the center in the longitudinal direction is away from the first lip surface 20 and is made to follow the opposing second lip surface 30. In order to achieve this, it is necessary to deform and curve the vicinity of the center in the longitudinal direction of the first lip surface 20 closer to the second lip surface 30. Therefore, a plurality of bolts 26 that fasten the first member 2 and the first plate 25 are loosened to create a space between the first member 2 and the first plate 25, and a shim 27 having a predetermined thickness is formed in the space in the longitudinal direction. The bolt 26 is fastened by inserting it into the center of the bolt. Then, the first member 2 and the first plate 25 that are in contact with each other in FIG. 2 are deformed so as to be separated from each other in the vicinity of the center in the longitudinal direction, as shown in FIG. At this time, the first lip surface 20 corresponding to the surface opposite to the contact surface of the first member 2 with the first plate 25 is deformed so as to approach the opposing second lip surface 30, and the first lip surface 20 and the second lip surface 20 The gap t between the lip surfaces of the lip surface 30 can be made constant over the longitudinal direction. Thus, by having the 1st plate 25 in the back side of the 1st lip surface 20 of the 1st member 2, the shape of the longitudinal direction of the 1st lip surface 20 can be changed, and, thereby, the 1st lip surface The gap t between the lip surfaces 20 and the second lip surface 30 can be made constant.
なお、第１部材２と第１プレート２５を互いに変形させるためにそれらの間に挿入するのはシム２７が好ましい。シム２７であれば、その厚みが厳密に管理されており、同じ厚みのものを挿入すれば変形量も同じとなり再現性もあり、繰り返しての調整も容易となるためである。また、そのシム２７の厚みは、第１部材２の第１リップ面２０をどの程度変形させるかによって選定、調整すればよい。さらに、そのシム２７を挿入する長手方向の位置は、第１リップ面２０が相対する第２リップ面３０の形状により適切に選択すればよく、どの位置であっても構わず、また、その位置が複数であっても構わない。 Note that a shim 27 is preferably inserted between the first member 2 and the first plate 25 to deform them. This is because the thickness of the shim 27 is strictly controlled, and if the same thickness is inserted, the amount of deformation is the same, there is reproducibility, and repeated adjustment is easy. The thickness of the shim 27 may be selected and adjusted depending on how much the first lip surface 20 of the first member 2 is deformed. Further, the position in the longitudinal direction for inserting the shim 27 may be appropriately selected depending on the shape of the second lip surface 30 with which the first lip surface 20 is opposed, and may be any position. There may be more than one.
第１プレート２５を有する塗布ヘッド１の、第１リップ面２０と第２リップ面３０のリップ面間の間隙ｔの調整方法は上記の通りであるが、図４に示すような、第１プレート２５に加えて第２部材３の第２リップ面３０の背面側に第２プレート３５を有する塗布ヘッド１であれば、第１部材２と第１プレート２５の間の空間に所定の厚みのシム２７を挿入して複数のボルト２６を締結することで第１リップ面２０の長手方向の形状を変形させることに加えて、相対する第１リップ面２０の形状に倣うように第２部材３０と第２プレート３５の間の空間に所定の厚みのシム３７を挿入して複数のボルト３６で締結することで、第２リップ面３０の長手方向の形状を変形させ、それにより、第１リップ面２０と第２リップ面３０のリップ面間の間隙ｔを調整できる。この方法であれば、第１リップ面２０と第２リップ面３０とを所望の形状にしつつ、リップ面間の間隙ｔを長手方向に渡って一定とすることができる。 The adjustment method of the gap t between the lip surfaces of the first lip surface 20 and the second lip surface 30 of the coating head 1 having the first plate 25 is as described above, but the first plate as shown in FIG. If the coating head 1 has the second plate 35 on the back side of the second lip surface 30 of the second member 3 in addition to 25, a shim having a predetermined thickness is formed in the space between the first member 2 and the first plate 25. In addition to deforming the shape of the first lip surface 20 in the longitudinal direction by inserting a plurality of bolts 26 and inserting a plurality of bolts 26, the second member 30 and the second member 30 so as to follow the shape of the opposing first lip surface 20 By inserting a shim 37 having a predetermined thickness into the space between the second plates 35 and fastening with a plurality of bolts 36, the shape of the second lip surface 30 in the longitudinal direction is deformed, whereby the first lip surface Between 20 and the lip surface of the second lip surface 30 t can be adjusted. With this method, it is possible to make the gap t between the lip surfaces constant in the longitudinal direction while making the first lip surface 20 and the second lip surface 30 in a desired shape.
なお、第２部材３と第２プレート３５を互いに変形させるためにそれらの間に挿入するのは、第１部材２と第１プレート２５における理由と同様でシムが好ましく、また、その厚みは、第２リップ面３０をどの程度変形させるかによって選定、調整すればよく、さらに、それを挿入する長手方向の位置は、第１リップ面２０と第２リップ面３０のリップ面間の間隙ｔが一定になるように適切に選択すればよく、どの位置であっても構わず、また、その位置が複数であっても構わない。 In order to deform the second member 3 and the second plate 35, the shim is preferable for the same reason as in the first member 2 and the first plate 25, and the thickness thereof is as follows. It may be selected and adjusted depending on how much the second lip surface 30 is deformed, and the longitudinal position for inserting the second lip surface 30 is determined by the gap t between the lip surfaces of the first lip surface 20 and the second lip surface 30. The position may be appropriately selected so as to be constant, and any position may be used, and a plurality of positions may be used.
ここで、塗布ヘッドの第１プレート２５の第１リップ面２０の長手方向に対する断面２次モーメントは、第１部材２の断面２次モーメントよりも小さいことが好ましい。断面２次モーメントは、その部材への外力に対する強さを表すものであり、断面２次モーメントが大きいほど変形しにくいことを意味する。変形しにくいということは、変形させたときにその変形量が僅かになり、変形量を微調整することができる。そのため、第１部材２と第１プレート２５の間の空間にシム２７を挿入して複数のボルト２６を締結して、第１部材２の第１リップ面２０の長手方向の形状を変形させるときに、第１プレート２５の長手方向に対する断面２次モーメントが第１部材２の断面２次モーメントよりも小さいほうが、第１部材２の第１リップ面２０の長手方向の形状も微調整することが可能となる。同様の理由で、第２プレート３５の第２リップ面３０の長手方向に対する断面２次モーメントは、第２部材３の断面２次モーメントよりも小さいことが好ましい。 Here, it is preferable that the second moment of section in the longitudinal direction of the first lip surface 20 of the first plate 25 of the coating head is smaller than the second moment of section of the first member 2. The cross-sectional secondary moment represents the strength against external force applied to the member, and means that the larger the cross-sectional secondary moment is, the more difficult it is to be deformed. The fact that it is difficult to deform means that the amount of deformation becomes small when it is deformed, and the amount of deformation can be finely adjusted. Therefore, when the shim 27 is inserted into the space between the first member 2 and the first plate 25 and a plurality of bolts 26 are fastened to deform the longitudinal shape of the first lip surface 20 of the first member 2. In addition, the shape in the longitudinal direction of the first lip surface 20 of the first member 2 can be finely adjusted when the sectional secondary moment with respect to the longitudinal direction of the first plate 25 is smaller than that of the first member 2. It becomes possible. For the same reason, it is preferable that the second moment of section with respect to the longitudinal direction of the second lip surface 30 of the second plate 35 is smaller than the second moment of section of the second member 3.
また、塗布装置９０に搭載する塗布ヘッド１の第１プレート２の長手方向の長さは、塗布するウェブ５０の幅方向の長さ以上であることが好ましい。ウェブ５０への塗液６０の塗布は、ウェブ５０の幅方向全域に渡るため、第１プレート２の長手方向の長さがウェブ５０の幅方向の長さ以上であれば、ウェブ５０の幅方向における塗液６０の塗布量を決める第１リップ面２０と第２リップ面３０のリップ面間の間隙ｔのバラツキを、ウェブ５０の幅方向の長さ全体に渡って調整でき、ウェブ５０への塗液６０の塗布にウェブ５０の幅方向でバラツキが生じるのを抑えることできる。同様の理由で、第２プレート３５の長手方向の長さは、ウェブ５０の幅方向の長さ以上であることが好ましい。 Further, the length in the longitudinal direction of the first plate 2 of the coating head 1 mounted on the coating device 90 is preferably not less than the length in the width direction of the web 50 to be coated. Since the coating liquid 60 is applied to the web 50 over the entire width direction of the web 50, if the length of the first plate 2 in the longitudinal direction is equal to or greater than the length of the web 50 in the width direction, the width direction of the web 50 is determined. The variation in the gap t between the lip surfaces of the first lip surface 20 and the second lip surface 30 that determines the coating amount of the coating liquid 60 can be adjusted over the entire length of the web 50 in the width direction. Variations in the width direction of the web 50 in the application of the coating liquid 60 can be suppressed. For the same reason, the length of the second plate 35 in the longitudinal direction is preferably equal to or longer than the length of the web 50 in the width direction.
上記の通り、本発明にかかる塗布ヘッド、塗布装置および塗布ヘッドのリップ面間隙の調整方法を用いれば、ウェブの両面同時に塗液を均一な膜厚で塗布することができる。 As described above, by using the coating head, the coating apparatus, and the method for adjusting the gap between the lip surfaces of the coating head according to the present invention, the coating liquid can be coated with a uniform film thickness simultaneously on both sides of the web.
本発明は、両面に同時に塗膜を付けた紙や金属薄膜、フィルム、布などのウェブの製造に適用できるが、これに限られるものではない。 The present invention can be applied to the production of webs such as papers, metal thin films, films, and cloths that are simultaneously coated on both sides, but is not limited thereto.
１ 塗布ヘッド
２ 第１部材
３ 第２部材
２０ 第１リップ面
２５ 第１プレート
２６ ボルト
２７ シム
３０ 第２リップ面
３５ 第１プレート
３６ ボルト
３７ シム
５０ ウェブ
６０ 塗液
９０ 塗布装置
ｔ リップ面間の間隙
DESCRIPTION OF SYMBOLS 1 Coating head 2 1st member 3 2nd member 20 1st lip surface
25 First plate 26 Bolt 27 Shim 30 Second lip surface 35 First plate 36 Bolt 37 Shim 50 Web 60 Coating liquid 90 Coating device t Gap between lip surfaces
Claims (7)
前記第１部材の前記第１リップ面の背面側に配された第１プレートであって、その長手方向が前記第１リップ面の長手方向に略平行となるように伸び、その長手方向に垂直な断面が略矩形状であり、その長手方向に間隔をあけて並ぶ複数のボルトにより前記第１部材に締結された第１プレートを備えた、塗布ヘッド。 A first member having a first lip surface; and a second member having a second lip surface, wherein the first lip surface and the second lip surface are opposed to each other with a predetermined gap therebetween. And a coating head on which the second member is disposed,
A first plate disposed on a back side of the first lip surface of the first member, the longitudinal direction of the first plate extending substantially parallel to the longitudinal direction of the first lip surface, and perpendicular to the longitudinal direction; A coating head comprising a first plate having a substantially rectangular cross section and fastened to the first member by a plurality of bolts arranged at intervals in the longitudinal direction.
前記第１部材と前記第１プレートとの間の１箇所以上に厚さを調整したシムを挿入し、前記シムを挿入した状態で前記第１部材と前記第１プレートとを前記ボルトで締結して、第１部材を変形させ、
前記第２リップ面を基準として前記第１リップ面を変形させて、第１リップ面と第２リップ面との間隙を第１リップ面および第２リップ面の長手方向に渡って一定となるように調整する、塗布ヘッドのリップ面間隙の調整方法。 A method for adjusting a gap between opposing lip surfaces of an application head according to claim 1 or 3,
A shim having an adjusted thickness is inserted at one or more locations between the first member and the first plate, and the first member and the first plate are fastened with the bolts with the shim inserted. The first member is deformed,
The first lip surface is deformed with reference to the second lip surface so that the gap between the first lip surface and the second lip surface is constant over the longitudinal direction of the first lip surface and the second lip surface. To adjust the gap between the lip surfaces of the coating head.
前記第２部材と前記第２プレートとの間の１箇所以上に厚さを調整したシムを挿入し、前記シムを挿入した状態で前記第２部材と前記第２プレートとを前記ボルトで締結して、第２部材を変形させ、
前記第１リップ面および前記第２リップ面を互いに変形させて、第１リップ面と第２リップ面との間隙を第１リップ面および第２リップ面の長手方向に渡って一定となるように調整する、塗布ヘッドのリップ面間隙の調整方法。 A method for adjusting a gap between opposing lip surfaces of an application head according to claim 2 or 3, wherein a shim having an adjusted thickness is inserted at one or more locations between the first member and the first plate, In the state where the shim is inserted, the first member and the first plate are fastened with the bolt, and the first member is deformed,
A shim having an adjusted thickness is inserted at one or more locations between the second member and the second plate, and the second member and the second plate are fastened with the bolts with the shim inserted. The second member is deformed,
The first lip surface and the second lip surface are deformed with each other so that the gap between the first lip surface and the second lip surface is constant over the longitudinal direction of the first lip surface and the second lip surface. A method of adjusting the gap between the lip surfaces of the coating head to be adjusted.
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| CN108582618A (en) * | 2018-06-19 | 2018-09-28 | 常州腾拓机械设备有限公司 | A kind of cloth adhesive dispenser for sheet gelatin |
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| JP2017164682A (en) * | 2016-03-16 | 2017-09-21 | 東レ株式会社 | Method for manufacturing web with coating film |
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| JPH1015461A (en) * | 1996-07-02 | 1998-01-20 | Sony Corp | Coating applicator |
| JP2005270877A (en) * | 2004-03-25 | 2005-10-06 | Fuji Photo Film Co Ltd | Coating apparatus and coating method |
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| CN108582618A (en) * | 2018-06-19 | 2018-09-28 | 常州腾拓机械设备有限公司 | A kind of cloth adhesive dispenser for sheet gelatin |
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