JP4325005B2 - DF coater - Google Patents

DF coater Download PDF

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Publication number
JP4325005B2
JP4325005B2 JP01400699A JP1400699A JP4325005B2 JP 4325005 B2 JP4325005 B2 JP 4325005B2 JP 01400699 A JP01400699 A JP 01400699A JP 1400699 A JP1400699 A JP 1400699A JP 4325005 B2 JP4325005 B2 JP 4325005B2
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JP
Japan
Prior art keywords
base paper
coating
blade
coater
air flow
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP01400699A
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Japanese (ja)
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JP2000210610A (en
Inventor
裕之 大塚
弘幸 河野
博文 森田
淳 平田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
IHI Corp
Original Assignee
IHI Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Priority to JP01400699A priority Critical patent/JP4325005B2/en
Publication of JP2000210610A publication Critical patent/JP2000210610A/en
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Publication of JP4325005B2 publication Critical patent/JP4325005B2/en
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Expired - Fee Related legal-status Critical Current

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Description

【0001】
【発明の属する技術分野】
本発明は、テープ状の原紙の表面に感圧塗料等を直接塗工した加工紙等を連続して製造するためのDFコータ(Direct-Fountain-Coater)装置に関するものである。
【0002】
【従来の技術】
従来、感圧紙等の加工紙は、DFコータ装置によって製造されている。
【0003】
図5はDFコータ装置の側面図である。
図において、1はテープ状の原紙6が巻き付けられた繰り出しロールである。2は原紙6を巻き取る巻き取りロールである。3,3はこれら繰り出しロール1と巻き取りロール2の間をほぼ水平に案内する一対の案内ローラである。4は案内ローラ3,3の中間に設けられたヘッダである。5はヘッダ4から原紙6の上面に膜状に連続して流下させた感圧塗料等の塗料液であり、5aは塗料液5を原紙6の上面に塗工した塗料膜である。7はヘッダ4の下流側に設けられた加熱ヒータ等の定着部である。8は原紙6の搬送に伴って原紙6の表面に発生した同伴空気流である。原紙6は加工紙の製造効率を高めるため、約1,000m/min もの高速で搬送される場合がある。
【0004】
【発明が解決しようとする課題】
しかしながら、上記DFコータ装置は、原紙を約1,000m/min もの高速で搬送しているため、原紙の表面には下流側に向かって流れる同伴空気流が発生する。その結果、同伴空気流によって塗料膜が大きく乱れて良好な塗工を行うことができず、加工紙の品質を低下させるなどの問題がある。
【0005】
本発明は、上記のような問題点を解決するために創案されたもので、原紙の表面に発生する同伴空気流を確実に遮断して同伴空気流の塗工への悪影響をなくすようにしたDFコータ装置を提供することを目的とするものである。
【0006】
【課題を解決するための手段】
本発明によれば、ほぼ水平に流れるテープ状の原紙の上方から塗工液を膜状に連続して流下させて原紙の上面に塗料膜を塗工するDFコータ装置であって、上記塗料膜の塗工個所の上流側に、上記原紙の表面に発生する同伴空気流を遮断する遮風板を配設してなり、該遮風板は、支持部材と、該支持部材先端に取り付けられ先端に原紙の表面に接触する平面部を有し、中間に滑らかな彎曲部を有し、彎曲部に多数の通気孔を有するブレードとからなるDFコータ装置が提供される。
【0007】
上記ブレードの平面部は、先端が上方に向かって折り曲げられているのが好ましい。
【0008】
上記ブレードは、ステンレス鋼等の金属製であるのが好ましい。
【0009】
次に本発明の作用について説明する。
このように、塗料膜の塗工個所の上流側に、先端に原紙の表面に接触する平面部を有し、中間に滑らかな彎曲部を有し、かつ、彎曲部に多数の通気孔を有するブレードを有する遮風板を配設し、ブレードを原紙の表面に接触させて原紙の表面に発生する同伴空気流を確実に遮断するようにしたので、塗料膜の乱れを防止することができ、したがって、塗料膜厚さを均一にした良好な塗工を行うことができ、加工紙の品質の向上を図ることができる。原紙の表面に発生した同伴空気流は、ブレードと原紙との間に押し込まれて遮風板を通過してしまう恐れがあるので、通気孔によって上方に放流する。ブレードは原紙の表面に面接触しているので、原紙の表面に傷を付けることがなく、紙粉の発生を防止することができる。
【0010】
通気孔を通過した空気流が塗料液に当たる恐れがあるので、ブレード先端を上方に向かって折り曲げて遮風するのが好ましい。
【0011】
これらのブレードは、ステンレス鋼等の金属製なので、摩耗が少ない。ブレードの先端は、塗工個所の約30mm上流側に位置するように配設するのが好ましい。
【0012】
【本発明の実施の形態】
以下、本発明の好ましい一実施形態について図面を参照して説明する。
図1は本発明のDFコータ装置の側面図である。図2は図1の一部拡大図である。なお、従来技術として図5に示したものと共通の部材については、同じ符号を用いて説明する。
【0013】
図において、1はテープ状の原紙6が巻き付けられた繰り出しロールである。2は原紙6を巻き取る巻き取りロールである。3,3はこれら繰り出しロール1と巻き取りロール2の間をほぼ水平に案内する一対の案内ローラである。4は案内ローラ3,3の中間に設けられたヘッダである。5はヘッダ4から原紙6の上面に膜状に連続して流下させた感圧剤等の塗料液であり、5aは塗料液5を原紙6の上面に塗工した塗料膜である。7はヘッダ4の下流側に設けられた加熱ヒータ等の定着部である。8は原紙6の搬送に伴って原紙6の表面に発生した同伴空気流である。9は原紙6の上面に流下した塗料膜5の塗工個所である。
【0014】
10は塗工個所9の上流側に配設した遮風板である。遮風板10は、支持部材10aと、支持部材10aの先端に取り付けられ、先端に原紙6の表面に接触する平面部11aを有し、中間に滑らかな彎曲部11bを有し、彎曲部11bに多数の通気孔11cを有するブレード11とからなり、原紙6の表面に接触するようになっている。通気孔11cを上方に向かって開口するようにすると、同伴空気流8が上方に向かって流れるので好ましい。
【0015】
図3は本発明の他の実施形態を示すDFコータ装置の側面図であり、図4は図3の一部拡大図である。
図において、10は塗工個所9の上流側に配設した遮風板で、支持部材10aと、支持部材10aの先端に取り付けられ、先端に原紙6の表面に接触する平面部12aを有し、平面部12aの先端は上方に向かって折り曲げられており、中間に滑らかな彎曲部12bを有し、彎曲部12bに多数の通気孔12cを有するブレード12とからなり、原紙6の表面に面接触するようになっている。通気孔12cは、原紙6の流れ方向下流側に向かって斜め上方に開口しているので、通気孔12cを通過した空気流が塗料液5に当たる恐れがあるので、折曲部12cで遮風する。なお、他の構成は図1の構成と同じであり、説明を省略する。
【0016】
これらブレード11,12の先端は、塗工個所9の約30mm上流側に位置するように配設するのが好ましい。
【0017】
次に本実施形態の作用について述べる。
このように、塗料膜5aの塗工個所9の上流側に、先端に原紙6の表面に接触する平面部11aを有し、中間に滑らかな彎曲部11bを有し、かつ、彎曲部11bに多数の通気孔11cを有するブレード11を有する遮風板10を配設し、ブレード11を原紙6の表面に接触させて原紙6の表面に発生する同伴空気流8を確実に遮断するようにしたので、塗料膜5aの乱れを防止することができ、したがって、塗料膜5a厚さを均一にした良好な塗工を行うことができ、加工紙の品質の向上を図ることができる。原紙6の表面に発生した同伴空気流8は、ブレード11と原紙6との間に押し込まれて遮風板10を通過してしまう恐れがあるので、通気孔11cによって上方に放流する。ブレード11は原紙6の表面に面接触しているので、原紙6の表面に傷を付けることがなく、紙粉の発生を防止することができる。
【0018】
通気孔12dを通過した空気流8が塗料液5に当たる恐れがあるので、ブレード12先端を上方に向かって折り曲げて遮風するのが好ましい。
【0019】
これらのブレード11,12は、ステンレス鋼等の金属製なので、摩耗が少ない。ブレード11,12の先端は、塗工個所9の約30mm上流側に位置するように配設するのが好ましい。
【0020】
本発明は、上記実施の形態に限定されるものではなく、本発明の要旨を逸脱しない範囲で種々変更し得ることは勿論である。
【0021】
【発明の効果】
以上説明したように、本発明によれば、塗料膜の塗工個所の上流側に、多数の通気孔を有するブレードを有する遮風板を配設し、ブレードを原紙の表面に面接触させて原紙の表面に発生する同伴空気流を確実に遮断するようにしたので、塗料膜の乱れを防止することができ、したがって、塗料膜厚さを均一にした良好な塗工を行うことができ、加工紙の品質の向上を図ることができるなどの優れた効果を奏する。
【図面の簡単な説明】
【図1】本発明のDFコータ装置の側面図である。
【図2】図1の一部拡大図である。
【図3】本発明の他の実施形態を示すDFコータ装置の側面図である。
【図4】図3の一部拡大図である。
【図5】従来のDFコータ装置の側面図である。
【符号の説明】
1 繰り出しローラ
2 巻き取りローラ
3 案内ローラ
4 ヘッダ
5 塗料液
5a 塗料膜
6 原紙
7 定着部
8 同伴空気流
9 塗工個所
10 遮風板
10a 支持部材
11,12 ブレード
11c,12d 通気孔
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a DF coater (Direct-Fountain-Coater) apparatus for continuously producing processed paper or the like in which a pressure-sensitive paint or the like is directly applied to the surface of a tape-like base paper.
[0002]
[Prior art]
Conventionally, processed paper such as pressure-sensitive paper is manufactured by a DF coater.
[0003]
FIG. 5 is a side view of the DF coater.
In the figure, reference numeral 1 denotes a feeding roll around which a tape-like base paper 6 is wound. Reference numeral 2 denotes a winding roll for winding the base paper 6. Reference numerals 3 and 3 denote a pair of guide rollers for guiding the gap between the feed roll 1 and the take-up roll 2 substantially horizontally. Reference numeral 4 denotes a header provided between the guide rollers 3 and 3. Reference numeral 5 denotes a coating liquid such as a pressure-sensitive paint continuously flowed down from the header 4 to the upper surface of the base paper 6, and reference numeral 5 a denotes a coating film obtained by coating the upper surface of the base paper 6 with the coating liquid 5. Reference numeral 7 denotes a fixing unit such as a heater provided on the downstream side of the header 4. Reference numeral 8 denotes an accompanying air flow generated on the surface of the base paper 6 as the base paper 6 is conveyed. The base paper 6 may be conveyed at a high speed of about 1,000 m / min in order to increase the manufacturing efficiency of the processed paper.
[0004]
[Problems to be solved by the invention]
However, since the DF coater transports the base paper at a high speed of about 1,000 m / min, an entrained air flow that flows toward the downstream side is generated on the surface of the base paper. As a result, the coating film is greatly disturbed by the entrained air flow, making it impossible to perform good coating, and there is a problem that the quality of the processed paper is deteriorated.
[0005]
The present invention was devised to solve the above-described problems, and reliably blocks the entrained air flow generated on the surface of the base paper to eliminate the adverse effect on the coating of the entrained air flow. An object of the present invention is to provide a DF coater device.
[0006]
[Means for Solving the Problems]
According to the present invention, there is provided a DF coater device for coating a coating film on the upper surface of a base paper by continuously flowing a coating liquid in a film form from above a tape-like base paper flowing almost horizontally. An air shielding plate for blocking the entrained air flow generated on the surface of the base paper is disposed upstream of the coating portion, and the wind shielding plate is attached to the front end of the supporting member and the supporting member. There is provided a DF coater device comprising a blade having a flat portion in contact with the surface of the base paper, a smooth bent portion in the middle, and a plurality of air holes in the bent portion.
[0007]
The flat portion of the blade is preferably bent at the tip upward.
[0008]
The blade is preferably made of a metal such as stainless steel.
[0009]
Next, the operation of the present invention will be described.
As described above, on the upstream side of the coating film coating portion, the tip has a flat portion that contacts the surface of the base paper, the middle has a smooth bent portion, and the bent portion has a large number of ventilation holes. Since a windshield plate having a blade is arranged and the blade is brought into contact with the surface of the base paper to reliably block the entrained air flow generated on the surface of the base paper, the paint film can be prevented from being disturbed, Therefore, it is possible to perform good coating with a uniform coating film thickness, and to improve the quality of the processed paper. Since the entrained air flow generated on the surface of the base paper may be pushed between the blade and the base paper and pass through the wind shielding plate, it is discharged upward by the vent hole. Since the blade is in surface contact with the surface of the base paper, the surface of the base paper is not damaged and the generation of paper dust can be prevented.
[0010]
Since the air flow that has passed through the ventilation holes may hit the coating liquid, it is preferable to wind the blade by bending the blade tip upward.
[0011]
Since these blades are made of metal such as stainless steel, they are less worn. The tip of the blade is preferably arranged so as to be located about 30 mm upstream of the coating location.
[0012]
[Embodiments of the Invention]
Hereinafter, a preferred embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a side view of the DF coater of the present invention. FIG. 2 is a partially enlarged view of FIG. Members common to those shown in FIG. 5 as the prior art will be described using the same reference numerals.
[0013]
In the figure, reference numeral 1 denotes a feeding roll around which a tape-like base paper 6 is wound. Reference numeral 2 denotes a winding roll for winding the base paper 6. Reference numerals 3 and 3 denote a pair of guide rollers for guiding the gap between the feed roll 1 and the take-up roll 2 substantially horizontally. Reference numeral 4 denotes a header provided between the guide rollers 3 and 3. Reference numeral 5 denotes a coating liquid such as a pressure sensitive agent continuously flowed down from the header 4 to the upper surface of the base paper 6. Reference numeral 5 a denotes a coating film obtained by coating the upper surface of the base paper 6 with the coating liquid 5. Reference numeral 7 denotes a fixing unit such as a heater provided on the downstream side of the header 4. Reference numeral 8 denotes an accompanying air flow generated on the surface of the base paper 6 as the base paper 6 is conveyed. Reference numeral 9 denotes a coating portion of the coating film 5 that has flowed down to the upper surface of the base paper 6.
[0014]
Reference numeral 10 denotes a wind shielding plate disposed on the upstream side of the coating portion 9. The wind shielding plate 10 is attached to the support member 10a and the tip of the support member 10a, and has a flat portion 11a that contacts the surface of the base paper 6 at the tip, and has a smooth bent portion 11b in the middle, and the bent portion 11b. And a blade 11 having a large number of air holes 11c, and is in contact with the surface of the base paper 6. It is preferable to open the vent hole 11c upward because the entrained air flow 8 flows upward.
[0015]
3 is a side view of a DF coater device showing another embodiment of the present invention, and FIG. 4 is a partially enlarged view of FIG.
In the figure, reference numeral 10 denotes a wind shielding plate disposed on the upstream side of the coating location 9, and has a support member 10 a and a flat portion 12 a that is attached to the tip of the support member 10 a and contacts the surface of the base paper 6 at the tip. The front end of the flat surface portion 12a is bent upward, and has a smooth curved portion 12b in the middle and a blade 12 having a number of vent holes 12c in the curved portion 12b. It comes to contact. Since the air hole 12c is opened obliquely upward toward the downstream side in the flow direction of the base paper 6, since the air flow that has passed through the air hole 12c may hit the coating liquid 5, the air is blocked by the bent portion 12c. . The other configurations are the same as those shown in FIG.
[0016]
The tips of these blades 11 and 12 are preferably arranged so as to be located about 30 mm upstream of the coating site 9.
[0017]
Next, the operation of this embodiment will be described.
In this way, on the upstream side of the coating portion 9 of the coating film 5a, there is a flat portion 11a in contact with the surface of the base paper 6 at the tip, a smooth bent portion 11b in the middle, and the bent portion 11b A wind shielding plate 10 having a blade 11 having a large number of ventilation holes 11c is provided, and the blade 11 is brought into contact with the surface of the base paper 6 so as to reliably block the entrained air flow 8 generated on the surface of the base paper 6. Therefore, it is possible to prevent the coating film 5a from being disturbed, and thus it is possible to perform a good coating with a uniform coating film 5a thickness and to improve the quality of the processed paper. Since the entrained air flow 8 generated on the surface of the base paper 6 may be pushed between the blade 11 and the base paper 6 and pass through the wind shielding plate 10, it is discharged upward through the vent hole 11c. Since the blade 11 is in surface contact with the surface of the base paper 6, the surface of the base paper 6 is not damaged and the generation of paper dust can be prevented.
[0018]
Since the air flow 8 that has passed through the vent hole 12d may hit the coating liquid 5, it is preferable to wind the blade 12 by bending the tip end upward.
[0019]
Since these blades 11 and 12 are made of metal such as stainless steel, they are less worn. The tips of the blades 11 and 12 are preferably arranged so as to be located about 30 mm upstream of the coating site 9.
[0020]
The present invention is not limited to the above-described embodiment, and various changes can be made without departing from the scope of the present invention.
[0021]
【The invention's effect】
As described above, according to the present invention, a windshield plate having a blade having a large number of ventilation holes is disposed upstream of the coating film coating portion, and the blade is brought into surface contact with the surface of the base paper. Since the entrained air flow generated on the surface of the base paper is surely cut off, it is possible to prevent the coating film from being disturbed, and thus it is possible to perform a good coating with a uniform coating film thickness, Excellent effects such as improvement of the quality of the processed paper can be achieved.
[Brief description of the drawings]
FIG. 1 is a side view of a DF coater device according to the present invention.
FIG. 2 is a partially enlarged view of FIG.
FIG. 3 is a side view of a DF coater device showing another embodiment of the present invention.
4 is a partially enlarged view of FIG. 3;
FIG. 5 is a side view of a conventional DF coater device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Feeding roller 2 Take-up roller 3 Guide roller 4 Header 5 Paint liquid 5a Paint film 6 Base paper 7 Fixing part 8 Accompanying air flow 9 Coating location 10 Wind shield 10a Support member 11, 12 Blades 11c, 12d Vent

Claims (3)

ほぼ水平に流れるテープ状の原紙の上方から塗工液を膜状に連続して流下させて原紙の上面に塗料膜を塗工するDFコータ装置であって、上記塗料膜の塗工個所に近接して上流側に設けられ、上記原紙の表面に発生する同伴空気流を遮断する遮風板を配設してなり、上記遮風板は、原紙の流れ方向に下り勾配に配置された平板状の支持部材と、該支持部材先端に取り付けられたブレードとからなり該ブレードは上記支持部材と同一の勾配を有する勾配部と、原紙の表面に接触する平面部と、上記勾配部と上記平面部との間に介在する滑らかな湾曲部とからなり、該湾曲部には遮断された同伴空気流を上方に向かって流す多数の通気孔が設けられていることを特徴とするDFコータ装置。A DF coater apparatus by flow down continuously from the upper tape-like base paper a coating solution into a film coating the coating film on the upper surface of the base paper that flows substantially horizontally, close to the coating point of the coating film And a windshield plate that is provided upstream and blocks the entrained air flow generated on the surface of the base paper, and the windshield plate is a flat plate disposed in a downward gradient in the flow direction of the base paper. And a blade attached to the tip of the support member, the blade having a gradient portion having the same gradient as the support member, a flat portion contacting the surface of the base paper, the gradient portion and the flat surface consists of a smoothly curved portion interposed between the parts, DF coater apparatus, wherein a plurality of vent holes to flow toward the blocked entrained air flow upward is provided in the curved portion. 上記ブレードの平面部は先端が上方に向かって折り曲げられている請求項1記載のDFコータ装置。  2. The DF coater device according to claim 1, wherein the flat portion of the blade has a tip bent upward. 上記ブレードはステンレス鋼等の金属製である請求項1または請求項2記載のDFコータ装置。  The DF coater device according to claim 1 or 2, wherein the blade is made of metal such as stainless steel.
JP01400699A 1999-01-22 1999-01-22 DF coater Expired - Fee Related JP4325005B2 (en)

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JP4325005B2 true JP4325005B2 (en) 2009-09-02

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Publication number Priority date Publication date Assignee Title
FI115295B (en) * 1999-09-01 2005-04-15 Metso Paper Inc Curtain coating device and curtain coating method

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