JPH11114308A - Coating liquid deaerator and deaerating method - Google Patents
Coating liquid deaerator and deaerating methodInfo
- Publication number
- JPH11114308A JPH11114308A JP27743697A JP27743697A JPH11114308A JP H11114308 A JPH11114308 A JP H11114308A JP 27743697 A JP27743697 A JP 27743697A JP 27743697 A JP27743697 A JP 27743697A JP H11114308 A JPH11114308 A JP H11114308A
- Authority
- JP
- Japan
- Prior art keywords
- coating liquid
- ultrasonic
- deaerator
- membrane
- liquid
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D19/00—Degasification of liquids
- B01D19/0021—Degasification of liquids by bringing the liquid in a thin layer
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physical Water Treatments (AREA)
- Separation Using Semi-Permeable Membranes (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、塗工液等の溶存気
体を除去する塗工液の脱気装置及び脱気方法に関するも
のである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coating liquid degassing apparatus and a degassing method for removing dissolved gases such as a coating liquid.
【０００２】[0002]
【従来の技術】溶存気体量の多い塗工液は、塗布中に塗
布機において気泡が発生し易く、発生した気泡は筋やハ
ジキ故障の原因となる。したがって、塗工液を塗布機に
送る前に、塗工液中の溶存気体を除去しておく必要があ
り、この塗工液の溶存気体を除去する方法としては、例
えば、膜脱気装置を使用して行っていた。2. Description of the Related Art In a coating liquid having a large amount of dissolved gas, bubbles are easily generated in a coating machine during coating, and the generated bubbles cause a streak or cissing failure. Therefore, before sending the coating liquid to the coating machine, it is necessary to remove the dissolved gas in the coating liquid.As a method for removing the dissolved gas in the coating liquid, for example, a film deaerator is used. I was going to use.
【０００３】また、液体中の溶存気体、気泡等を除去す
る手段としては種々提案されており、例えば、特公昭５
５−６４０５号公報には、超音波発振器から発振された
超音波振動を被脱泡液に与え、被脱泡液中の気泡を液中
に溶解、消滅させるとともに大気圧下での気泡の析出を
防止する超音波脱泡方法が提案されている。[0003] Various means have been proposed for removing dissolved gas, bubbles and the like in a liquid.
In Japanese Patent Application Laid-Open No. 5-6405, an ultrasonic vibration oscillated from an ultrasonic oscillator is applied to a liquid to be defoamed, so that bubbles in the liquid to be defoamed are dissolved and eliminated in the liquid, and bubbles are deposited at atmospheric pressure. Ultrasonic defoaming methods for preventing such problems have been proposed.
【０００４】特開昭６１−５０６０８号公報には、被脱
泡液導入管及び脱泡槽に超音波を作用させる超音波発生
器を設けた超音波脱泡装置が提案されている。特開昭５
９−９２００３号公報には、超音波振動子を管体の中心
に向けて周方向に配置してなる超音波照射装置を用いて
ハロゲン化乳剤に超音波を照射する超音波脱泡方法が提
案されている。特開昭５９−１５６４０５号公報には、
導入管を流れる被脱泡液に高エネルギーの超音波を照射
するとともに、脱泡槽内の被脱泡液に低エネルギーの超
音波を照射する超音波脱泡方法が提案されている。Japanese Unexamined Patent Publication (Kokai) No. 61-50608 proposes an ultrasonic defoaming apparatus provided with an ultrasonic generator for applying ultrasonic waves to a liquid introduction pipe and a degassing tank. JP 5
Japanese Patent Application Laid-Open No. 9-92003 proposes an ultrasonic defoaming method of irradiating an ultrasonic wave to a halogenated emulsion using an ultrasonic irradiation device in which an ultrasonic vibrator is arranged in a circumferential direction toward the center of a tube. Have been. JP-A-59-156405 discloses that
An ultrasonic defoaming method has been proposed in which a high-energy ultrasonic wave is applied to a liquid to be defoamed flowing through an introduction pipe and a low-energy ultrasonic wave is applied to the liquid to be defoamed in a defoaming tank.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、塗工液
を膜脱気装置で脱気する時、脱気能力が低いと溶存気体
量の多い塗工液が塗布機へ送液されてしまう。この時、
脱気装置を大きくすれば脱気能力が確保でき溶存気体量
を少なくできるが、その分液ロス量が多くなってしまう
ものであった。However, when the coating liquid is degassed by the film deaerator, if the degassing ability is low, the coating liquid having a large amount of dissolved gas is sent to the coating machine. At this time,
If the degassing device is enlarged, the degassing capacity can be secured and the amount of dissolved gas can be reduced, but the liquid separation loss increases.
【０００６】また、特公昭５５−６４０５号公報で提案
された超音波脱泡技術は、超音波発振を利用して液中に
泡を溶解させて脱気するもので、膜脱気装置において溶
存気体を塗工液中から除去することには適用できなかっ
た。The ultrasonic defoaming technique proposed in Japanese Patent Publication No. 55-6405 dissolves bubbles in a liquid by using ultrasonic oscillation to deaerate the liquid. It was not applicable to removing gas from the coating liquid.
【０００７】特開昭６１−５０６０８号公報、特開昭５
９−９２００３号公報及び特開昭５９−１５６４０５号
公報で提案された技術は、超音波発振により微細泡を大
きな泡にし、浮上分離により脱泡するものである。した
がって、膜脱気装置のように密封系の装置においては適
用できなかった。[0007] JP-A-61-50608 and JP-A-5-50608
The technology proposed in Japanese Patent Application Laid-Open No. 9-92003 and Japanese Patent Application Laid-Open No. Sho 59-156405 is to make fine bubbles into large bubbles by ultrasonic oscillation and to remove bubbles by floating separation. Therefore, it cannot be applied to a closed system such as a membrane deaerator.
【０００８】本発明は、以上の問題点を解決するために
なされたもので、膜脱気装置を通過している塗工液に超
音波振動を与えることにより、溶存気体の拡散を促進さ
せて、脱気能力を向上させるようにした塗工液の脱気装
置及び脱気方法を提供することを目的とする。[0008] The present invention has been made to solve the above problems, and by applying ultrasonic vibration to a coating solution passing through a membrane deaerator, the diffusion of a dissolved gas is promoted. It is an object of the present invention to provide a coating liquid degassing apparatus and a degassing method that improve the degassing ability.
【０００９】[0009]
【課題を解決するための手段】本発明の塗工液の脱気装
置は、超音波伝播用液体が満たされた超音波液槽と、こ
の超音波液槽内に設けられた膜脱気装置と、この膜脱気
装置及びこれを通過中の塗工液に超音波振動を与える超
音波発振器とを有することを特徴として構成されてい
る。A deaerator for a coating liquid according to the present invention comprises: an ultrasonic liquid tank filled with an ultrasonic wave propagating liquid; and a membrane deaerator provided in the ultrasonic liquid tank. And an ultrasonic oscillator for applying ultrasonic vibration to the coating liquid passing through the film deaerator.
【００１０】また、本発明の塗工液の脱気方法は、膜脱
気装置及びこれを通過中の塗工液に超音波振動を与え
て、膜脱気装置の膜を透過中の気体の透過を促進させる
とともに塗工液中の溶存気体の分離を促進させることを
特徴として構成されている。Further, in the method for degassing a coating liquid according to the present invention, an ultrasonic vibration is applied to a film degassing apparatus and a coating liquid passing through the film degassing apparatus so that a gas permeating the membrane of the film degassing apparatus is removed. It is characterized by promoting permeation and promoting separation of dissolved gas in the coating liquid.
【００１１】本発明の塗工液の脱気装置及び脱気方法に
おいては、超音波発振器が超音波伝播用液体を介して膜
脱気装置を超音波振動させることにより、膜脱気装置の
膜を透過中の気体の透過を促進させ、また、膜脱気装置
を通過中の塗工液を超音波振動させることにより、塗工
液中からの溶存気体の分離を促進させる。In the coating liquid degassing apparatus and the degassing method according to the present invention, the ultrasonic oscillator oscillates the membrane degassing apparatus through the ultrasonic wave propagating liquid to thereby ultrasonically vibrate the film. The separation of the dissolved gas from the coating liquid is promoted by promoting the permeation of the gas permeating the coating liquid and by ultrasonically vibrating the coating liquid passing through the membrane deaerator.
【００１２】[0012]
【発明の実施の形態】塗工液は、水系塗工液、有機溶剤
系塗工液等、特に限定されるものでなく、どちらにも効
果的である。DESCRIPTION OF THE PREFERRED EMBODIMENTS The coating liquid is not particularly limited, such as a water-based coating liquid and an organic solvent-based coating liquid, and is effective for both.
【００１３】超音波の周波数は、１０ＫＨｚ〜６０ＫＨ
ｚの範囲が好ましく、２８ＫＨｚ前後がより好ましい。
また、出力は、１００Ｗ〜５００Ｗの範囲が好ましく、
１００Ｗ〜２００Ｗの範囲がより好ましい。The frequency of the ultrasonic wave is 10 KHz to 60 KH
The range of z is preferable, and about 28 KHz is more preferable.
The output is preferably in the range of 100 W to 500 W,
The range of 100W to 200W is more preferable.
【００１４】膜脱気装置の減圧圧力としては、好ましく
は３０ｔｏｒｒ以下、より好ましくは１０ｔｏｒｒ以下
である。[0014] The reduced pressure of the membrane deaerator is preferably 30 torr or less, more preferably 10 torr or less.
【００１５】また、脱気装置本体内部に超音波発振子を
設け、塗布液に直接超音波振動をかけてもよい。Also, an ultrasonic oscillator may be provided inside the deaerator main body, and ultrasonic vibration may be directly applied to the coating solution.
【００１６】本発明による塗工液の脱気装置の一例を図
面を参照して説明する。An example of a coating solution degassing apparatus according to the present invention will be described with reference to the drawings.
【００１７】図１は、脱気装置の概略模式図である。こ
の図において、１は塗工液を貯溜しておく塗工液タンク
で、この塗工液タンク１は導入配管２を介して膜脱気装
置３に連結されている。４は超音波液槽としての水槽
で、この水槽４内には超音波伝播用液体としての水５が
充填されており、この水槽４の中に水５に浸かった状態
で膜脱気装置３が配置されている。FIG. 1 is a schematic diagram of a deaerator. In this drawing, reference numeral 1 denotes a coating liquid tank for storing a coating liquid, and this coating liquid tank 1 is connected to a membrane deaerator 3 via an introduction pipe 2. Reference numeral 4 denotes a water tank as an ultrasonic liquid tank. The water tank 4 is filled with water 5 as an ultrasonic wave propagating liquid, and the membrane deaerator 3 is immersed in the water 5 in the water tank 4. Is arranged.
【００１８】また、水槽４には、膜脱気装置３及び膜脱
気装置３を通過中の塗工液に超音波振動を与える超音波
発振器６が設けられており、この超音波発振器６は、発
振器本体７と水槽４の底部に配置された超音波振動子８
とで構成されている。Further, the water tank 4 is provided with a membrane deaerator 3 and an ultrasonic oscillator 6 for applying ultrasonic vibration to the coating solution passing through the membrane deaerator 3. , Oscillator body 7 and ultrasonic vibrator 8 arranged at the bottom of water tank 4
It is composed of
【００１９】なお、９は膜脱気装置３を減圧するための
真空ポンプ、１０は溶存気体が除去された塗工液が次の
工程へ送られる排出配管であり、１１は塗工液を膜脱気
装置３へ送り込む送液ポンプである。Reference numeral 9 denotes a vacuum pump for depressurizing the membrane deaerator 3; 10 denotes a discharge pipe through which the coating liquid from which dissolved gas has been removed is sent to the next step; This is a liquid sending pump that feeds into the deaerator 3.
【００２０】このような塗工液の脱気装置においては、
送液ポンプ１１により導入配管２を介して塗工液を膜脱
気装置３へ送る。膜脱気装置３は、水５を介して超音波
振動子８により超音波振動され、膜を透過中の気体の透
過が促進され、また、膜脱気装置３中の塗工液は超音波
振動され、溶存気体の分離が促進される。In such a coating liquid deaerator,
The coating liquid is sent to the membrane deaerator 3 by the liquid sending pump 11 through the introduction pipe 2. The membrane deaerator 3 is ultrasonically vibrated by the ultrasonic vibrator 8 via the water 5 to promote the permeation of gas passing through the membrane, and the coating liquid in the membrane deaerator 3 is an ultrasonic wave. Vibration promotes the separation of dissolved gases.
【００２１】[0021]
【実施例】図１に示す塗工液の脱気装置を用いて塗工液
の脱気を行った。EXAMPLE A coating solution was degassed using a coating solution deaerator shown in FIG.
【００２２】〈送液条件〉 塗 工 液：有機溶剤系塗工液 減圧圧力 ：１０ｔｏｒｒ（膜脱気装置） 使 用 液：水系塗工液 送 液 量：６００ｃｃ／分 ポ ン プ：ギアポンプ 超音波発振：２８ＫＨＺ、３００Ｗ 〈結果〉溶存酸素残存率（％）を表１に示す。<Solution conditions> Coating liquid: organic solvent-based coating liquid Decompression pressure: 10 torr (membrane deaerator) Working liquid: water-based coating liquid Pumping amount: 600 cc / min Pump: gear pump Ultrasonic wave Oscillation: 28 KHZ, 300 W <Results> The dissolved oxygen residual ratio (%) is shown in Table 1.
【００２３】[0023]
【表１】 [Table 1]
【００２４】溶存酸素残存率（％）の値が小さい方がよ
り脱気されていることを意味する。The smaller the value of the dissolved oxygen residual ratio (%), the more degassed.
【００２５】以上の結果、超音波発振することで７．８
％残存率が下がる（脱気され易くなる）ことが解る。As a result, 7.8 is obtained by ultrasonic oscillation.
It can be seen that the% residual rate decreases (it becomes easier to degas).
【００２６】なお、脱気装置本体内部に超音波発振子を
設け、塗工液に直接振動をかけた場合には同様の条件で
溶存酸素残存率の減少は７％であった。When an ultrasonic oscillator was provided inside the deaerator and the coating liquid was directly vibrated, the decrease in the residual dissolved oxygen ratio was 7% under the same conditions.
【００２７】[0027]
【発明の効果】本発明は、塗工液の溶存気体を効率よく
除去することができ、その結果、脱気装置のサイズを小
型化することができるとともに、液ロス量も削減するこ
とができる。According to the present invention, the dissolved gas in the coating liquid can be efficiently removed, and as a result, the size of the deaerator can be reduced and the amount of liquid loss can be reduced. .
【図１】 本発明による塗工液の脱気装置の一例の概略
模式図である。FIG. 1 is a schematic diagram of an example of a coating liquid degassing apparatus according to the present invention.
１ 塗工液タンク ２ 導入配管 ３ 膜脱気装置 ４ 水槽（超音波液槽） ５ 水（超音波伝播用液体） ６ 超音波発振器 ７ 発振器本体 ８ 超音波振動子 DESCRIPTION OF SYMBOLS 1 Coating liquid tank 2 Introducing piping 3 Membrane deaerator 4 Water tank (ultrasonic liquid tank) 5 Water (ultrasonic propagation liquid) 6 Ultrasonic oscillator 7 Oscillator body 8 Ultrasonic oscillator
Claims (3)
槽と、この超音波液槽内に設けられた膜脱気装置と、こ
の膜脱気装置を通過中の塗工液に超音波振動を与える超
音波発振器とを有することを特徴とする塗工液の脱気装
置。1. An ultrasonic liquid tank filled with an ultrasonic wave propagating liquid, a film degassing device provided in the ultrasonic liquid tank, and a coating liquid passing through the film degassing device. A deaerator for a coating liquid, comprising: an ultrasonic oscillator for applying ultrasonic vibration.
工液に超音波振動を与えて、膜脱気装置の膜を透過中の
気体の透過を促進させるとともに塗工液中の溶存気体の
分離を促進させることを特徴とする塗工液の脱気方法。2. A method for applying ultrasonic vibration to a membrane degassing apparatus and a coating liquid passing through the membrane degassing apparatus to promote the permeation of gas passing through the membrane of the membrane degassing apparatus, A method for degassing a coating liquid, which promotes the separation of dissolved gas from a coating solution.
ｒｒ以下にする請求項２記載の塗工液の脱気方法。3. The reduced pressure in the membrane deaerator is 30 to
3. The method for degassing a coating liquid according to claim 2, wherein the pressure is rr or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27743697A JP4049342B2 (en) | 1997-10-09 | 1997-10-09 | Degassing method of coating liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27743697A JP4049342B2 (en) | 1997-10-09 | 1997-10-09 | Degassing method of coating liquid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11114308A true JPH11114308A (en) | 1999-04-27 |
| JP4049342B2 JP4049342B2 (en) | 2008-02-20 |
Family
ID=17583546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27743697A Expired - Fee Related JP4049342B2 (en) | 1997-10-09 | 1997-10-09 | Degassing method of coating liquid |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4049342B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2819424A1 (en) * | 2001-01-17 | 2002-07-19 | Francois Quiviger | Continuous degassing system, for liquids under pressure, uses ultrasound resonator to form gas bubbles |
| US6939392B2 (en) | 2003-04-04 | 2005-09-06 | United Technologies Corporation | System and method for thermal management |
| CN104165172A (en) * | 2013-05-16 | 2014-11-26 | 罗伯特·博世有限公司 | Hydraulic device |
| GB2601489A (en) * | 2020-12-01 | 2022-06-08 | Agilent Technologies Inc | Vaccum degassing using electroactive material |
| CN115555342A (en) * | 2022-09-23 | 2023-01-03 | 北韵新材料科技(上海)有限公司 | A vacuum vibration defoaming soaking treatment device |
| WO2024246754A1 (en) * | 2023-05-30 | 2024-12-05 | Ecobox Limited | Apparatus and method for degassing fluids |
-
1997
- 1997-10-09 JP JP27743697A patent/JP4049342B2/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2819424A1 (en) * | 2001-01-17 | 2002-07-19 | Francois Quiviger | Continuous degassing system, for liquids under pressure, uses ultrasound resonator to form gas bubbles |
| US6939392B2 (en) | 2003-04-04 | 2005-09-06 | United Technologies Corporation | System and method for thermal management |
| CN104165172A (en) * | 2013-05-16 | 2014-11-26 | 罗伯特·博世有限公司 | Hydraulic device |
| GB2601489A (en) * | 2020-12-01 | 2022-06-08 | Agilent Technologies Inc | Vaccum degassing using electroactive material |
| GB2601489B (en) * | 2020-12-01 | 2024-01-17 | Agilent Technologies Inc | Vaccum degassing using electroactive material |
| CN115555342A (en) * | 2022-09-23 | 2023-01-03 | 北韵新材料科技(上海)有限公司 | A vacuum vibration defoaming soaking treatment device |
| WO2024246754A1 (en) * | 2023-05-30 | 2024-12-05 | Ecobox Limited | Apparatus and method for degassing fluids |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4049342B2 (en) | 2008-02-20 |
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