JP2002370060A - Deaeration system of coating liquid and deaeration method for coating liquid - Google Patents
Deaeration system of coating liquid and deaeration method for coating liquidInfo
- Publication number
- JP2002370060A JP2002370060A JP2001178337A JP2001178337A JP2002370060A JP 2002370060 A JP2002370060 A JP 2002370060A JP 2001178337 A JP2001178337 A JP 2001178337A JP 2001178337 A JP2001178337 A JP 2001178337A JP 2002370060 A JP2002370060 A JP 2002370060A
- Authority
- JP
- Japan
- Prior art keywords
- coating liquid
- liquid
- coating
- reserve tank
- deaeration
- 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.)
- Pending
Links
Landscapes
- Application Of Or Painting With Fluid Materials (AREA)
- Coating Apparatus (AREA)
- Degasification And Air Bubble Elimination (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ウェブに塗布され
る塗布液中に溶存する空気を脱気する塗布液の脱気シス
テム及び塗布液の脱気方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coating liquid degassing system and a coating liquid degassing method for degassing air dissolved in a coating liquid applied to a web.
【０００２】[0002]
【従来の技術】感光性平版印刷版は、一般にコイル状の
アルミニウム版（以下「ウエブ」という）に、例えば、
砂目立て、陽極酸化、化成処理等の表面処理を単独又は
適宜組み合わせて行い、次いで、塗布液が塗布された
後、乾燥工程へ回される。2. Description of the Related Art A photosensitive lithographic printing plate is generally formed on a coiled aluminum plate (hereinafter referred to as "web") by, for example,
Surface treatment such as graining, anodic oxidation, and chemical conversion treatment is performed alone or in an appropriate combination. Then, after a coating liquid is applied, the coating liquid is sent to a drying step.
【０００３】ところで、塗布液の塗布工程において、溶
存空気が含有した塗布液をそのまま塗布すると、気泡に
よって泡はじき、縦スジ、ピンホール等の欠陥が塗布面
に生じ、ウェブに均一な感光膜を形成することができな
い。このため、ウェブに塗布される塗布液中に含有する
溶存空気を除去する必要がある。In the application step of a coating solution, if the coating solution containing dissolved air is applied as it is, bubbles are repelled by bubbles, defects such as vertical stripes and pinholes are generated on the coating surface, and a uniform photosensitive film is formed on the web. Cannot be formed. For this reason, it is necessary to remove dissolved air contained in the coating liquid applied to the web.
【０００４】このような液中の溶存空気を効率的に除去
する方法として、図２に示すように、リザーブタンク５
０に貯留された塗布液Ｌを送液ポンプ５２で脱気装置５
４へ送ることで、液中の溶存空気を取り除き、そのまま
フィルタ２８を通して塗布装置３０に送る方法がある
（特開平９−２５３４５９号公報参照）。As a method for efficiently removing the dissolved air in the liquid, as shown in FIG.
The coating solution L stored in the degassing device 5
4, the dissolved air in the liquid is removed, and the liquid is directly sent to the coating device 30 through the filter 28 (see Japanese Patent Application Laid-Open No. 9-253,459).
【０００５】しかし、脱気能力を上げるために、脱気装
置を多数配置（直列又は並列）すると、接続する配管の
容積が大きくなる。このため、ラインを停止させたと
き、配管中に残存している塗布液の液ロス量が増加す
る。また、脱気装置内に滞留している塗布液も無駄にな
る。However, when a large number of deaerators are arranged (in series or in parallel) in order to increase the deaeration capacity, the volume of the pipe to be connected increases. For this reason, when the line is stopped, the loss of the coating liquid remaining in the pipe increases. Further, the coating solution staying in the deaerator is wasted.
【０００６】[0006]
【発明が解決しようとする課題】本発明は上記事実を考
慮し、配管の容積を大きくすることなく脱気能力を向上
させ、また、ラインが停止したときの液ロス量を大幅に
減少させることを課題とする。SUMMARY OF THE INVENTION The present invention has been made in consideration of the above facts, and has an object to improve the degassing capacity without increasing the volume of piping and to greatly reduce the amount of liquid loss when a line stops. As an issue.
【０００７】[0007]
【課題を解決するための手段】請求項１に記載の発明
は、ウェブに塗布される塗布液中の溶存空気を除去する
塗布液の脱気システムにおいて、前記塗布液を貯留する
リザーブタンクと、前記リザーブタンク内の塗布液を脱
気装置へ送る送液ポンプと、前記脱気装置で脱気された
塗布液を前記リザーブタンクへ戻す循環手段と、前記リ
ザーブタンク内に貯留された脱気済みの塗布液を塗布装
置へ送る送液手段と、を有することを特徴としている。According to the first aspect of the present invention, there is provided a coating liquid degassing system for removing dissolved air in a coating liquid applied to a web, a reserve tank for storing the coating liquid, A liquid pump for feeding the coating solution in the reserve tank to a degassing device, a circulating means for returning the coating solution degassed in the degassing device to the reserve tank, and a degassed gas stored in the reserve tank. And a liquid sending means for sending the coating liquid to the coating apparatus.
【０００８】請求項１に記載の発明は、ウェブに塗布さ
れる塗布液中の溶存空気を除去する塗布液の脱気システ
ムである。塗布液は、リザーブタンク内に貯留されてお
り、送液ポンプによって、脱気装置へ送られる。The first aspect of the present invention is a coating solution degassing system for removing dissolved air in a coating solution applied to a web. The coating liquid is stored in a reserve tank, and is sent to a deaerator by a liquid sending pump.
【０００９】そして、脱気された塗布液は、循環手段で
リザーブタンクへ戻され、脱気済みの塗布液が送液手段
により、塗布装置へ送られる。Then, the degassed coating liquid is returned to the reserve tank by the circulation means, and the degassed coating liquid is sent to the coating apparatus by the liquid sending means.
【００１０】このように、リザーブタンクと脱気装置の
間で塗布液を循環させて塗布液中の溶存空気量を減じる
ことで、除去能力を向上させることができる。このた
め、配管の容積も小さくて済み、液ロス量を大幅に減少
できると共に、設置スペースを削減することができる。
また、リザーブタンクのように、元々ある設備で前処理
を行なうことで、前処理用の設備を特別に設ける必要が
なくなる。As described above, by removing the amount of dissolved air in the coating liquid by circulating the coating liquid between the reserve tank and the deaerator, the removing ability can be improved. For this reason, the volume of the pipe can be small, the amount of liquid loss can be significantly reduced, and the installation space can be reduced.
In addition, by performing pre-processing with the originally existing equipment, such as a reserve tank, it is not necessary to provide special equipment for pre-processing.
【００１１】請求項２に記載の発明は、前記循環手段
は、前記送液ポンプが停止すると前記脱気装置内の塗布
液を前記リザーブタンク内へ自然落下させることを特徴
としている。The invention according to claim 2 is characterized in that the circulating means naturally drops the coating solution in the degassing device into the reserve tank when the liquid feeding pump stops.
【００１２】上記構成では、送液ポンプが停止すると、
脱気装置内の塗布液をリザーブタンク内へ自然落下させ
ることで、脱気装置内に滞留している塗布液が無駄にな
らず、液ロス量を大幅に減少させることができる。In the above configuration, when the liquid supply pump stops,
By allowing the coating liquid in the deaerator to fall naturally into the reserve tank, the coating liquid remaining in the deaerator is not wasted, and the amount of liquid loss can be significantly reduced.
【００１３】請求項３に記載の発明は、ウェブに塗布さ
れる塗布液中の溶存空気を除去する塗布液の脱気方法に
おいて、リザーブタンク内に貯留された前記塗布液を脱
気装置へ送液して脱気し、脱気した塗布液をリザーブタ
ンクへ戻す工程を繰り返すことを特徴としている。According to a third aspect of the present invention, in the method for degassing a coating liquid for removing dissolved air in the coating liquid applied to the web, the coating liquid stored in a reserve tank is sent to a deaerator. The method is characterized by repeating the steps of liquid-gassing and degassing, and returning the degassed coating liquid to the reserve tank.
【００１４】[0014]
【発明の実施の形態】以下、図面を参照して本発明の実
施形態を説明する。Embodiments of the present invention will be described below with reference to the drawings.
【００１５】図１に示すように、本形態では、塗布液Ｌ
（有機溶剤系）を貯留するリザーブタンク１０を備えて
いる。As shown in FIG. 1, in the present embodiment, the coating liquid L
A reserve tank 10 for storing (organic solvent) is provided.
【００１６】このリザーブタンク１０は気密構造とされ
ており、その底壁１０Ａには、送液管１６が接続されて
いる。送液管１６は途中で分岐しており、分岐管にはそ
れぞれ三方弁３２が設けられている。そして、三方弁３
２に接続された落し管５８が脱気装置１８の下部に接続
されている。The reserve tank 10 has an airtight structure, and a liquid feed pipe 16 is connected to its bottom wall 10A. The liquid feed pipe 16 branches off in the middle, and each of the branch pipes is provided with a three-way valve 32. And three-way valve 3
2 is connected to the lower part of the deaerator 18.
【００１７】この構成では、制御部３８からの信号で三
方弁３２が切り替えられ、送液ポンプ１４によって、リ
ザーブタンク１０に貯留された塗布液Ｌが、脱気装置１
８の下部へ送られる。また、三方弁３２には、回収管２
４がそれぞれ接続されており、この回収管２４は、リザ
ーブタンク１０の側壁を貫通してリザーブタンク１０内
へ至っている。In this configuration, the three-way valve 32 is switched by a signal from the control unit 38, and the coating liquid L stored in the reserve tank 10 is supplied by the liquid supply pump 14 to the deaerator 1
8 sent to the bottom. The three-way valve 32 has a collection pipe 2
4 are connected to each other, and the collection pipe 24 penetrates the side wall of the reserve tank 10 and reaches the inside of the reserve tank 10.
【００１８】これによって、送液ポンプ１４が停止した
とき、２台の脱気装置１８に滞留した塗布液Ｌをリザー
ブタンク１０内へ高低差で自然落下させる構成となって
いる。Thus, when the liquid supply pump 14 is stopped, the coating liquid L retained in the two deaerators 18 is allowed to fall naturally into the reserve tank 10 at a height difference.
【００１９】一方、落し管５８を通じて脱気装置１８に
送液された塗布液は、脱気膜２２の表側に送られる。脱
気膜２２は、テトラフルオロエチレン−ヘキサフルオロ
プロピレン共重合体で製造されたシート状或は袋状の薄
膜（サイズ：８０００×３５０ｍｍ）が使用されている
が、他の脱気膜としては、フッ素樹脂フィルムが使用で
き、四弗化エチレン−六弗化プロピレン共重合体樹脂フ
ィルム、四弗化エチレン−パーフルオロアルコキシエチ
レン共重合樹脂フィルム、四弗化エチレン−エチレン共
重合樹脂フィルムを用いることができる。フッ素樹脂フ
ィルム膜厚として、１００μｍ以下が好ましく、５０μ
ｍ以下がより好ましい。On the other hand, the coating solution sent to the deaerator 18 through the dropping pipe 58 is sent to the front side of the deaeration film 22. As the deaeration film 22, a sheet-like or bag-like thin film (size: 8000 × 350 mm) made of a tetrafluoroethylene-hexafluoropropylene copolymer is used. A fluororesin film can be used, and a tetrafluoroethylene-hexafluoropropylene copolymer resin film, a tetrafluoroethylene-perfluoroalkoxyethylene copolymer resin film, and a tetrafluoroethylene-ethylene copolymer resin film can be used. it can. The thickness of the fluororesin film is preferably 100 μm or less,
m or less is more preferable.
【００２０】脱気膜２２の裏面側には、吸引管６０が接
続されている。この吸引管６０を通じて真空ポンプ２６
により脱気膜２２の裏面側が吸引され、圧力が３０×
１．３３３２２×１０2Ｐａまで落とされる。そして、
この脱気膜２２により、溶存酸素の残存率が下がった塗
布液は、戻り管１２を通り、リザーブタンク１０へ戻さ
れ、再び脱気装置１８へ送られる。A suction pipe 60 is connected to the back side of the degassing film 22. Through this suction pipe 60, the vacuum pump 26
The back side of the deaeration film 22 is sucked, and the pressure is 30 ×
It is reduced to 1.33322 × 10 2 Pa. And
The coating solution having a reduced residual ratio of dissolved oxygen by the degassing film 22 is returned to the reserve tank 10 through the return pipe 12 and sent to the degassing device 18 again.
【００２１】以上のようにして、溶存酸素の残存率が減
少したリザーブタンク１０内の塗布液は、送液ポンプ２
０によって送水管３４を通り、ろ過装置２８を経て塗布
装置３０に送液される。この塗布装置３０でウェブＷに
塗布液Ｌが均一に塗布される。As described above, the coating liquid in the reserve tank 10 in which the residual ratio of the dissolved oxygen has decreased is supplied to the liquid feeding pump 2.
According to 0, the liquid is sent to the coating device 30 through the water supply pipe 34 and the filtration device 28. The coating liquid L is uniformly applied to the web W by the coating device 30.
【００２２】なお、脱気装置１８の脱気膜２２の表面側
の容積は１．２５リットルあり、また、脱気装置１８へ
送液される塗布液の容量は、４．０リットル／分とされ
ている。The volume of the degassing device 18 on the surface side of the degassing film 22 is 1.25 liters, and the volume of the coating solution sent to the degassing device 18 is 4.0 liters / minute. Have been.
【００２３】また、脱気装置の圧力に関しては、２００
×１．３３３２２×１０2Ｐａ以下が好ましいく、３０
×１．３３３２２×１０2Ｐａ以下がより好ましい。The pressure of the deaerator is 200
× 1.33322 × 10 2 Pa or less, preferably 30
× 1.33322 × 10 2 Pa or less is more preferable.
【００２４】さらに、塗布液の溶解成分は水溶性の物で
ある必要はあるが、水溶性のものであれば溶解成分は特
に限定されない。この溶解成分としては、例えば、ポリ
ビニルアルコール、ポリ酢酸ビニル、ポリビニルピロリ
ドン等のビニル系ポリマー、アクリル酸、メタクリル
酸、アクリル酸系共重合体ポリマー等がある。Further, the dissolved component of the coating solution needs to be water-soluble, but the dissolved component is not particularly limited as long as it is water-soluble. Examples of the dissolving component include vinyl polymers such as polyvinyl alcohol, polyvinyl acetate, and polyvinylpyrrolidone, acrylic acid, methacrylic acid, and acrylic acid-based copolymer polymers.
【００２５】本発明に適する塗布液は有機溶剤系に限定
されず水系でも構わない。水系塗布液は、微細気泡の発
生を効果的に抑制できるので、粘度が１ｃ.ｐ.以上のも
のが好適であり、５ｃ.ｐ.以上のより高粘度の水系塗布
液がより好適である。The coating solution suitable for the present invention is not limited to an organic solvent system, but may be an aqueous system. Since the generation of fine bubbles can be effectively suppressed, the aqueous coating liquid preferably has a viscosity of 1 cp or more, and more preferably a higher viscosity aqueous coating liquid of 5 cp or more.
【００２６】塗布液に求められる脱気度（溶存酸素の残
存率）は、塗布液の送液量、塗布方法、故障の発生率等
にもよるが、本実施例では脱気度を、６０％〜７０％を
目標とした。The degree of deaeration (residual rate of dissolved oxygen) required for the coating solution depends on the amount of the coating solution to be fed, the coating method, the occurrence rate of failure, and the like. % To 70%.
【００２７】水系塗布液の塗布は、一層でも、複数層で
もよく、多層送液塗布装置にも応用することもできる。
ウェブＷ（支持体）は、アルミニウム、ＰＥＴ等、特に
限定されない。The application of the aqueous coating solution may be performed in one layer or in a plurality of layers, and may be applied to a multilayer liquid feeding coating apparatus.
The web W (support) is not particularly limited, such as aluminum and PET.
【００２８】また、脱気装置１８を構成するハウジング
の材質、形状は特に限定されず、さらに、脱気膜も非多
孔質であるか多孔質であるかは関係なく、形態もシート
状でも、袋状でもよく、中空糸の中の圧力を下げてその
周りへ塗布液を通すようにしてもよい。The material and the shape of the housing constituting the deaerator 18 are not particularly limited. Further, regardless of whether the deaeration film is non-porous or porous, the deaeration film may be in the form of a sheet. It may be in the form of a bag, or the pressure inside the hollow fiber may be reduced to allow the application liquid to pass therearound.
【００２９】次に、脱気装置１８に滞留した塗布液を如
何にリザーブタンク１０へ戻すか説明する。Next, how the coating solution retained in the deaerator 18 is returned to the reserve tank 10 will be described.
【００３０】リザーブタンク１０の中には液面レベルセ
ンサ３６が配置されており、塗布液の下限値を検知す
る。液面レベルセンサ３６から制御部３８へ信号が出力
されると、送液ポンプ１４及び真空ポンプ２６が停止す
ると同時に三方弁３２が切り替えられ、落し管５８、回
収管２４を通じて脱気装置１８に滞留した塗布液がリザ
ーブタンク１０へ自然落下する。これによって、脱気装
置１８の塗布液が全てリザーブタンクへ戻るため、液ロ
ス量を大幅に減少させることができる。A liquid level sensor 36 is disposed in the reserve tank 10 to detect the lower limit of the coating liquid. When a signal is output from the liquid level sensor 36 to the control unit 38, the three-way valve 32 is switched at the same time as the liquid supply pump 14 and the vacuum pump 26 are stopped, and stays in the deaerator 18 through the drop pipe 58 and the recovery pipe 24. The applied coating liquid falls naturally into the reserve tank 10. As a result, all the coating liquid in the deaerator 18 returns to the reserve tank, so that the liquid loss amount can be significantly reduced.
【００３１】なお、リザーブタンク１０へ塗布液が新た
に供給されると、送液ポンプ１４及び真空ポンプ２６が
稼動すると同時に三方弁３２が切り替えられ、脱気装置
１８へ送られ脱気された塗布液が戻り管１２を通じてリ
ザーブタンク１０へ戻される。When the coating liquid is newly supplied to the reserve tank 10, the three-way valve 32 is switched at the same time as the liquid feeding pump 14 and the vacuum pump 26 are operated, and is sent to the deaerator 18 to be degassed. The liquid is returned to the reserve tank 10 through the return pipe 12.
【００３２】また、図２に示す脱気装置を２台並列に配
置して脱気するシステムの残液量と、図１に示す脱気装
置を２台並列に配置して脱気するシステムの残液量を比
較すると、従来タイプの場合、リザーブタンク内の塗布
液は全て塗布可能であるが、ラインが停止したとき脱気
装置内に塗布液が６リットル残留した。Further, the remaining liquid amount of the system for deaeration by arranging two deaerators shown in FIG. 2 in parallel and the system for deaeration by arranging two deaerators in parallel shown in FIG. Comparing the remaining liquid amounts, in the case of the conventional type, all the coating liquid in the reserve tank can be applied, but when the line was stopped, 6 L of the coating liquid remained in the deaerator.
【００３３】一方、本発明の場合、リザーブタンク内の
塗布液を全て塗布することができることは無論、ライン
が停止したとき脱気装置内に残留する塗布液が３．５リ
ットルとなり減少した。On the other hand, in the case of the present invention, it is a matter of course that all the coating liquid in the reserve tank can be applied. When the line is stopped, the coating liquid remaining in the deaerator is reduced to 3.5 liters.
【００３４】ここで、ＰＳ版となるウェブの全体の製造
工程を簡単に説明しておく。Here, a brief description will be given of the entire manufacturing process of the web serving as the PS plate.
【００３５】ＰＳ版は、９９．５重量％アルミニウム
に、銅を０．０１重量％、チタンを０．０３重量％、鉄
を０．３重量％、ケイ素を０．１重量％含有するＪＩＳ
―Ａ１０５０アルミニウム材の厚み０．３０ｍｍ圧延板
を、４００メッシュのパミストン（共立窯業製）の２０
重量％水性懸濁液と、回転ナイロンブラシ（６，１０−
ナイロン）とを用いてその表面を砂目立てした後、よく
水で洗浄した。The PS plate is a JIS containing 99.5% by weight of aluminum, 0.01% by weight of copper, 0.03% by weight of titanium, 0.3% by weight of iron, and 0.1% by weight of silicon.
-A1050 rolled sheet of aluminum material with a thickness of 0.30 mm was converted to a 400 mesh
Weight percent aqueous suspension and a rotating nylon brush (6,10-
(Nylon) and the surface was grained, and then washed well with water.
【００３６】これを１５重量％水酸化ナトリウム水溶液
（アルミニウム４．５重量％含有）に浸漬してアルミニ
ウムの溶解量が５ｇ／ｍ2 になるようにエッチングした
後、流水で水洗した。さらに、１重量％硝酸で中和し、
次に０．７重量％硝酸水溶液（アルミニウム０．５重量
％含有）中で、陽極時電圧１０．５ボルト、陰極時電圧
９．３ボルトの矩形波交番波形電圧（電流比ｒ＝０．９
０、特公昭５８−５７９６号公報実施例に記載されてい
る電流波形）を用いて１６０クーロン／ｄｍ2の陽極時
電気量で電解粗面化処理を行った。水洗後、３５℃の１
０重量％水酸化ナトリウム水溶液中に浸漬して、アルミ
ニウム溶解量が１ｇ／ｍ2 になるようにエッチングした
後、水洗した。次に、５０℃３０重量％の硫酸水溶液中
に浸漬し、デスマットした後、水洗した。This was immersed in a 15% by weight aqueous solution of sodium hydroxide (containing 4.5% by weight of aluminum) and etched so that the amount of aluminum dissolved was 5 g / m 2 , and then washed with running water. Furthermore, neutralize with 1% by weight nitric acid,
Next, in a 0.7% by weight nitric acid aqueous solution (containing 0.5% by weight of aluminum), a rectangular wave alternating waveform voltage (current ratio r = 0.9) having an anode voltage of 10.5 volts and a cathode voltage of 9.3 volts was used.
0, a current waveform described in Examples of JP-B-58-5796), and an electrolytic surface roughening treatment was carried out at an anode electricity amount of 160 coulomb / dm 2 . After washing with water,
It was immersed in a 0% by weight aqueous sodium hydroxide solution, etched so that the amount of aluminum dissolved was 1 g / m 2 , and washed with water. Next, it was immersed in a 50% by weight aqueous solution of 30% by weight sulfuric acid, desmutted, and washed with water.
【００３７】さらに、３５℃の硫酸２０重量％水溶液
（アルミニウム０．８重量％含有）中で直流電流を用い
て、多孔性陽極酸化皮膜形成処理を行った。すなわち電
流密度１３Ａ／ｄｍ2 で電解を行い、電解時間の調節に
より陽極酸化皮膜重量２．７ｇ／ｍ2 とした。ジアゾ樹
脂と結合剤を用いたネガ型感光性平版印刷版を作成する
為に、この支持体を水洗後、７０℃のケイ酸ナトリウム
の３重量％水溶液に３０秒間浸漬処理し、水洗乾燥し
た。Further, a porous anodic oxide film forming treatment was performed in a 20% by weight aqueous sulfuric acid solution (containing 0.8% by weight of aluminum) at 35 ° C. using a direct current. That is, electrolysis was performed at a current density of 13 A / dm 2 , and the anodic oxide film weight was adjusted to 2.7 g / m 2 by adjusting the electrolysis time. To prepare a negative photosensitive lithographic printing plate using a diazo resin and a binder, the support was washed with water, immersed in a 3% by weight aqueous solution of sodium silicate at 70 ° C. for 30 seconds, washed with water and dried.
【００３８】以上のようにして得られたアルミニウム支
持体は、マクベスＲＤ９２０反射濃度計で測定した反射
濃度は０．３０で、ＪＩＳ Ｂ００６０１に規定する中
心線平均粗さＲaは０．５８μｍであった。[0038] The thus-obtained aluminum support, reflection density was measured with Macbeth RD920 reflection densitometer 0.30, the center line average roughness R a as defined in JIS B00601 is 0.58μm met Was.
【００３９】次に上記支持体にメチルメタクリレート／
エチルアクリレート／２−アクリルアミド−２−メチル
プロパンスルホン酸ナトリウム共重合体（平均分子量約
６万）（モル比５０／３０／２０）の１．０重量％水溶
液をロールコーターにより乾燥後の塗布量が０．０５ｇ
／ｍ2 になるように塗布した。Next, methyl methacrylate /
A 1.0% by weight aqueous solution of ethyl acrylate / 2-acrylamide-2-methylpropane sodium sulfonate copolymer (average molecular weight: about 60,000) (molar ratio: 50/30/20) was dried by a roll coater to obtain an applied amount of 1.0% by weight. 0.05g
/ M 2 .
【００４０】さらに、塗布液として下記感光液−１を、
本形態で用いたバーコーターを用いて塗布し、１１０℃
で４５秒間乾燥させた。乾燥塗布量は２．０ｇ／ｍ2 で
あった。 感光液−１ ジアゾ樹脂−１ ０．５０ｇ 結合剤−１ ５．００ｇ スチライトＨＳ−２（大同工業(株)製） ０．１０ｇ ビクトリアピュアブルーＢＯＨ ０．１５ｇ トリクレジルホスフェート ０．５０ｇ ジピコリン酸 ０．２０ｇ ＦＣ−４３０（３Ｍ社製界面活性剤） ０．０５ｇ 溶剤 １−メトキシ−２−プロパノール ２５．００ｇ 乳酸メチル １２．００ｇ メタノール ３０．００ｇ メチルエチルケトン ３０．００ｇ 水 ３．００ｇ 上記のジアゾ樹脂―１は、次ぎのようにして得たもので
ある。まず、４−ジアゾジフェニルアミン硫酸塩（純度
９９．５％）２９．４ｇを２５℃にて、９６％硫酸７０
ｍｌに徐々に添加し、かつ２０分間攪拌した。これに、
パラホルムアルデヒド（純度９２％）３．２６ｇを約１
０分かけて徐々に添加し、該混合物を３０℃にて、４時
間攪拌し、縮合反応を進行させた。なお、上記ジアゾ化
合物とホルムアルデヒドとの縮合モル比は１：１であ
る。この反応生成物を攪拌しつつ氷水２リットル中に注
ぎ込み、塩化ナトリウム１３０ｇを溶解した冷濃厚水溶
液で処理した。この沈澱物を吸引濾過により回収し、部
分的に乾燥した固体を１リットルの水に溶解し、濾過
し、氷で冷却し、かつ、ヘキサフルオロリン酸カリ２３
ｇを溶解した水溶液で処理した。最後に、この沈澱物を
濾過して回収し、かつ風乾して、ジアゾ樹脂−１ｇを得
た。Further, the following photosensitive solution-1 was used as a coating solution.
Apply using the bar coater used in the present embodiment, 110 ° C
For 45 seconds. The dry coating amount was 2.0 g / m 2 . Photosensitive solution-1 Diazo resin-1 0.50 g Binder-1 5.00 g Stylite HS-2 (manufactured by Daido Kogyo Co., Ltd.) 0.10 g Victoria Pure Blue BOH 0.15 g Tricresyl phosphate 0.50 g Dipicolinic acid 0 .20 g FC-430 (surfactant manufactured by 3M) 0.05 g Solvent 1-methoxy-2-propanol 25.00 g Methyl lactate 12.00 g Methanol 30.00 g Methyl ethyl ketone 30.00 g Water 3.00 g The above diazo resin-1 Is obtained as follows. First, 29.4 g of 4-diazodiphenylamine sulfate (purity: 99.5%) was added at 25 ° C to 96% sulfuric acid 70%.
ml and stirred for 20 minutes. to this,
3.26 g of paraformaldehyde (purity 92%)
The mixture was gradually added over 0 minutes, and the mixture was stirred at 30 ° C. for 4 hours to allow the condensation reaction to proceed. The condensation molar ratio between the diazo compound and formaldehyde is 1: 1. The reaction product was poured into 2 liters of ice water with stirring, and treated with a cold concentrated aqueous solution in which 130 g of sodium chloride was dissolved. The precipitate is collected by suction filtration, the partially dried solid is dissolved in one liter of water, filtered, cooled on ice and washed with potassium hexafluorophosphate 23.
g was dissolved in an aqueous solution. Finally, the precipitate was collected by filtration and air-dried to obtain 1 g of diazo resin.
【００４１】結合剤−１は、２−ヒドロキシエチルメタ
クリレート／アクリロニトリル／メチルメタクリレート
／メタクリル酸共重合体（重量比５０／２０／２６／
４、平均分子量７５，０００、酸含量０．４ｍｅｑ／
ｇ）の水不溶性、アルカリ水可溶性の皮膜形成性高分子
である。Binder-1 was 2-hydroxyethyl methacrylate / acrylonitrile / methyl methacrylate / methacrylic acid copolymer (weight ratio 50/20/26 /
4, average molecular weight 75,000, acid content 0.4 meq /
g) is a water-insoluble, alkaline water-soluble film-forming polymer.
【００４２】スチライトＨＳ−２（大同工業(株)製）
は、結合剤よりも感脂性の高い高分子化合物であって、
スチレン／マレイン酸モノ−４−メチル−２−ペンチル
エステル＝５０／５０（モル比）の共重合体であり、平
均分子量は約１００，０００であった。このようにして
作成した感光層の表面に下記の様にしてマット層形成用
樹脂液を吹き付けてマット層を設けた。Stylite HS-2 (manufactured by Daido Industry Co., Ltd.)
Is a polymer compound having a higher oil sensitivity than the binder,
It was a copolymer of styrene / mono-4-methyl-2-pentyl maleate = 50/50 (molar ratio), and the average molecular weight was about 100,000. A mat layer-forming resin solution was sprayed on the surface of the thus prepared photosensitive layer as described below to form a mat layer.
【００４３】マット層形成用樹脂液としてメチルメタク
リレート／エチルアクリレート／２−アクリルアミド−
２−メチルプロパンスルホン酸（仕込重量比６５：２
０：１５）共重合体の一部をナトリウム塩とした１２％
水溶液を準備し、回転霧化静電塗装機で霧化頭回転数２
５，０００ｒｐｍ、樹脂液の送液量は４．０ｍｌ／分、
霧化頭への印加電圧は−９０ｋＶ、塗布時の周囲温度は
２５℃、相対湿度は５０％とし、塗布液２．５秒で塗布
面に蒸気を吹き付けて湿潤させ、ついで湿潤した３秒後
に温度６０℃、湿度１０％の温風を５秒間吹き付けて乾
燥させた。マットの高さは平均約６μｍ、大きさは平均
約３０μｍ、塗布量は１５０ｍｇ／ｍ2 であった。As a resin solution for forming a mat layer, methyl methacrylate / ethyl acrylate / 2-acrylamide-
2-methylpropanesulfonic acid (65: 2 weight ratio charged)
0:15) 12% of a part of the copolymer as a sodium salt
Prepare an aqueous solution and use a rotary atomizing electrostatic coating machine to atomize the head 2 times
5,000 rpm, the feeding amount of the resin liquid is 4.0 ml / min,
The voltage applied to the atomizing head was -90 kV, the ambient temperature during coating was 25 ° C, the relative humidity was 50%, and the coating surface was sprayed with steam for 2.5 seconds to wet the coating surface. Hot air with a temperature of 60 ° C. and a humidity of 10% was blown for 5 seconds to dry. The average height of the mat was about 6 μm, the average size was about 30 μm, and the application amount was 150 mg / m 2 .
【００４４】[0044]
【発明の効果】本発明は上記構成としたので、配管の容
積を大きくすることなく脱気能力を向上させ、また、ラ
インが停止したときの液ロス量を大幅に減少させること
ができる。According to the present invention, the deaeration capacity can be improved without increasing the volume of the piping, and the amount of liquid loss when the line is stopped can be greatly reduced.
【図１】本形態に係る塗布液の脱気システムを示す説明
図である。FIG. 1 is an explanatory diagram showing a coating solution degassing system according to an embodiment.
【図２】従来の塗布液の脱気システムを示す説明図であ
る。FIG. 2 is an explanatory view showing a conventional coating solution degassing system.
【符号の説明】 １０ リザーブタンク １２ 戻り管（循環手段） １４ 送液ポンプ １８ 脱気装置 ２０ 送液ポンプ（送液手段） ２４ 回収管（循環手段） ３２ 三方弁（循環手段）[Description of Signs] 10 Reserve tank 12 Return pipe (circulation means) 14 Liquid supply pump 18 Deaerator 20 Liquid supply pump (liquid supply means) 24 Recovery pipe (circulation means) 32 Three-way valve (circulation means)
フロントページの続き Ｆターム(参考） 4D011 AA17 AC10 AD06 4D075 AC21 AC84 CA47 CB07 DA04 DB07 DB48 DC19 DC21 DC27 EA06 EA07 EA45 EB14 EB19 EB20 EB22 4F042 AA22 CA01 CA07 CB02 CB11 CB20 CB24 Continued on the front page F term (reference) 4D011 AA17 AC10 AD06 4D075 AC21 AC84 CA47 CB07 DA04 DB07 DB48 DC19 DC21 DC27 EA06 EA07 EA45 EB14 EB19 EB20 EB22 4F042 AA22 CA01 CA07 CB02 CB11 CB20 CB24
Claims (3)
を除去する塗布液の脱気システムにおいて、 前記塗布液を貯留するリザーブタンクと、 前記リザーブタンク内の塗布液を脱気装置へ送る送液ポ
ンプと、 前記脱気装置で脱気された塗布液を前記リザーブタンク
へ戻す循環手段と、 前記リザーブタンク内に貯留された脱気済みの塗布液を
塗布装置へ送る送液手段と、 を有することを特徴とする塗布液の脱気システム。1. A degassing system for a coating liquid for removing dissolved air in a coating liquid applied to a web, wherein a reserve tank for storing the coating liquid and a coating liquid in the reserve tank are sent to a deaerator. A liquid sending pump, a circulating unit that returns the coating solution degassed by the degassing device to the reserve tank, and a liquid sending unit that sends the degassed coating solution stored in the reserve tank to the coating device, A deaeration system for a coating solution, comprising:
すると前記脱気装置内の塗布液を前記リザーブタンク内
へ自然落下させることを特徴とする請求項１に記載の塗
布液の脱気システム。2. The degassing of the coating liquid according to claim 1, wherein the circulating means causes the coating liquid in the degassing device to fall naturally into the reserve tank when the liquid feeding pump stops. system.
を除去する塗布液の脱気方法において、 リザーブタンク内に貯留された前記塗布液を脱気装置へ
送液して脱気し、脱気した塗布液をリザーブタンクへ戻
す工程を繰り返すことを特徴とする塗布液の脱気方法。3. A method for degassing a coating liquid for removing dissolved air in a coating liquid applied to a web, wherein the coating liquid stored in a reserve tank is sent to a deaerator to be degassed. A method for degassing a coating liquid, comprising repeating a step of returning the degassed coating liquid to a reserve tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001178337A JP2002370060A (en) | 2001-06-13 | 2001-06-13 | Deaeration system of coating liquid and deaeration method for coating liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001178337A JP2002370060A (en) | 2001-06-13 | 2001-06-13 | Deaeration system of coating liquid and deaeration method for coating liquid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002370060A true JP2002370060A (en) | 2002-12-24 |
Family
ID=19019053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001178337A Pending JP2002370060A (en) | 2001-06-13 | 2001-06-13 | Deaeration system of coating liquid and deaeration method for coating liquid |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002370060A (en) |
Cited By (4)
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| WO2016158049A1 (en) * | 2015-03-31 | 2016-10-06 | 王子ホールディングス株式会社 | Coated article and method for producing coated article |
| TWI577434B (en) * | 2015-05-29 | 2017-04-11 | 住華科技股份有限公司 | Deaeration apparatus and deaeration method using the same |
| TWI754248B (en) * | 2019-03-26 | 2022-02-01 | 美商慧盛材料美國責任有限公司 | Degassers, degassing systems and the methods of using them |
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