JPH06115056A - Washing of water-soluble ink deposit - Google Patents

Washing of water-soluble ink deposit

Info

Publication number
JPH06115056A
JPH06115056A JP26246192A JP26246192A JPH06115056A JP H06115056 A JPH06115056 A JP H06115056A JP 26246192 A JP26246192 A JP 26246192A JP 26246192 A JP26246192 A JP 26246192A JP H06115056 A JPH06115056 A JP H06115056A
Authority
JP
Japan
Prior art keywords
water
soluble ink
metal
plastic
ink
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
Application number
JP26246192A
Other languages
Japanese (ja)
Other versions
JP3138078B2 (en
Inventor
Eiji Asada
英治 浅田
Nobuyuki Kitajima
信幸 北嶋
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.)
Tokuyama Corp
Toppan Inc
Original Assignee
Tokuyama Corp
Toppan Printing Co Ltd
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
Application filed by Tokuyama Corp, Toppan Printing Co Ltd filed Critical Tokuyama Corp
Priority to JP04262461A priority Critical patent/JP3138078B2/en
Publication of JPH06115056A publication Critical patent/JPH06115056A/en
Application granted granted Critical
Publication of JP3138078B2 publication Critical patent/JP3138078B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41PINDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2235/00Cleaning
    • B41P2235/30Recovering used solvents or residues
    • B41P2235/31Recovering used solvents or residues by filtering

Landscapes

  • Cleaning By Liquid Or Steam (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)

Abstract

PURPOSE:To easily reutilize the water used in washing without contaminating the same by the dissolution of water-soluble ink by drying the water-soluble ink bonded to a metal or plastic before bringing the same into contact with water. CONSTITUTION:The water-soluble ink bonded to a metal or plastic is dried to be temporarily made insoluble in water. As a drying method, any method sufficiently drying the water-soluble ink may be employed but a method drying the water-soluble ink within a short time by heating is especially pref. because the water-soluble ink can be easily released in a foil piece shape from the metal or plastic. After the water-soluble ink is dried, the ink is brought into contact with water. The water-soluble ink is not immediately dissolved in water upon the contact with water and released from the surface of the metal or plastic in a foil piece state. Therefore, the water used in the washing of the metal or plastic can be reutilized if the foil pieces of the water-soluble ink mixed with water are separated by filtering.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、水溶性インキ付着物の
洗浄方法に関するものであって、より詳しくは、水溶性
インキが付着した金属またはプラスチックから、洗浄に
使用する水をインキで汚染させることなく、水溶性イン
キを良好に除去する方法に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for cleaning water-soluble ink deposits, and more specifically, to contaminate water used for cleaning with ink from metal or plastic to which water-soluble ink adheres. And a method for satisfactorily removing the water-soluble ink.

【0002】[0002]

【従来の技術】グラビア印刷機やフレキソ印刷機では、
インキ供給部に多くの部品を使用しており、インキを変
えるたびに部品を交換し洗浄する必要がある。そのため
に、従来から部品の洗浄のために、種々の洗浄機が提案
されている。例えば、特開平1−63085号公報に
は、本出願人らの提案した洗浄機が開示されている。
2. Description of the Related Art In gravure printing machines and flexo printing machines,
Since many parts are used in the ink supply section, it is necessary to replace and clean the parts each time the ink is changed. Therefore, various washing machines have been conventionally proposed for washing parts. For example, Japanese Patent Laid-Open No. 1-63085 discloses a washing machine proposed by the present applicants.

【0003】[0003]

【発明が解決しようとする課題】しかしながら、従来の
洗浄機では、部品に付着したインキを洗浄液に溶解させ
ることによって除去する方式であるために、洗浄に使用
された洗浄液中には多量のインキが溶解している。その
ため洗浄液を再使用するにあたっては、洗浄液に溶解し
たインキと洗浄液とを分離する必要があり、また、洗浄
液を廃棄する場合にも環境汚染防止のためには、やは
り、洗浄液に溶解したインキと洗浄液とを分離する必要
がある。しかしながら、インキが水溶性インキであり洗
浄液が水の場合には、水に溶解した水溶性インキと水と
の分離が容易ではないために、水処理が困難であるとい
う問題があった。
However, in the conventional washing machine, since the ink adhered to the parts is removed by dissolving it in the washing liquid, a large amount of ink is contained in the washing liquid used for washing. It is dissolved. Therefore, when reusing the cleaning liquid, it is necessary to separate the ink dissolved in the cleaning liquid and the cleaning liquid, and also when discarding the cleaning liquid, in order to prevent environmental pollution, the ink dissolved in the cleaning liquid and the cleaning liquid must be reused. And need to be separated. However, when the ink is a water-soluble ink and the cleaning liquid is water, there is a problem that the water treatment is difficult because it is not easy to separate the water-soluble ink dissolved in water from water.

【0004】[0004]

【発明の目的】そこで本発明の目的は、金属やプラスチ
ック等の印刷用器具に付着した水溶性インキを水で容易
に除去する方法を提供することにある。
SUMMARY OF THE INVENTION It is an object of the present invention to provide a method for easily removing water-soluble ink attached to a printing instrument such as metal or plastic with water.

【0005】[0005]

【課題を解決するための手段】本発明は、上記の目的を
達成するために提案されたもので、洗浄に先立って、あ
らかじめ水溶性インキを乾燥させる点に特徴を有するも
のである。即ち、本発明によれば、金属またはプラスチ
ックに付着した水溶性インキを乾燥させた後、水と接触
させることを特徴とする水溶性インキ付着物の洗浄方法
が提供される。
The present invention has been proposed in order to achieve the above object, and is characterized in that the water-soluble ink is dried in advance before washing. That is, according to the present invention, there is provided a method for cleaning a water-soluble ink deposit, which comprises drying the water-soluble ink attached to metal or plastic and then contacting it with water.

【0006】[0006]

【発明の具体的説明】本発明において、洗浄の対象とな
る金属またはプラスチックは、公知のものが何等制限な
く採用できる。例えば、金属としては、鉄、ステンレス
スチール、銅、ニッケル、アルミニウム、チタン等を挙
げることができる。また、プラスチックとしては、ポリ
オレフィン、ポリハロゲン化ビニル、アクリル樹脂、ポ
リウレタン、ポリアミド、ポリエステル、ポリカーボネ
ート等を挙げることができる。
DETAILED DESCRIPTION OF THE INVENTION In the present invention, the metal or plastic to be cleaned may be any known metal or plastic without any limitation. For example, the metal may include iron, stainless steel, copper, nickel, aluminum, titanium and the like. Examples of plastics include polyolefin, polyvinyl halide, acrylic resin, polyurethane, polyamide, polyester, and polycarbonate.

【0007】上記の金属またはプラスチックに付着した
水溶性インキとしては、水溶性であれば、公知のインキ
を何等制限なく採用できる。例えば、ビヒクルがカルボ
キシル基を有する樹脂、例えば、アクリル酸系樹脂また
はマレイン酸系樹脂であり、これに染料または顔料が混
合されてなるインキをあげることができる。
As the water-soluble ink adhered to the above metal or plastic, any known ink can be used without any limitation as long as it is water-soluble. For example, an ink in which a vehicle is a resin having a carboxyl group, for example, an acrylic acid-based resin or a maleic acid-based resin, and a dye or a pigment is mixed with the resin can be used.

【0008】本発明における重要な技術的特徴は、金属
またはプラスチックに付着した水溶性インキを乾燥さ
せ、水溶性インキを一時的に水に不溶性にする点にあ
る。乾燥の方法としては、水溶性インキが十分に乾燥す
る方法であればどのような方法であってもよい。例え
ば、常温、湿度70%以下では5ないし50時間放置す
ることによって乾燥させることができ、温度60ないし
100℃では10分ないし1時間で乾燥することが可能
である。本発明においては、特に加熱によって短時間で
乾燥させる方法が、水溶性インキを洗浄水に溶解させる
ことなく、金属またはプラスチックから水溶性インキを
箔片状で容易に剥離させることができるために好適であ
る。
An important technical feature of the present invention is that the water-soluble ink adhering to metal or plastic is dried to make the water-soluble ink temporarily insoluble in water. Any drying method may be used as long as the water-soluble ink is sufficiently dried. For example, it can be dried by allowing it to stand at room temperature and a humidity of 70% or less for 5 to 50 hours, and at a temperature of 60 to 100 ° C. for 10 minutes to 1 hour. In the present invention, the method of drying for a short time by heating is particularly preferable because the water-soluble ink can be easily peeled from the metal or plastic in the form of a foil without dissolving the water-soluble ink in washing water. Is.

【0009】このようにして水溶性インキを乾燥させた
後、水溶性インキを水と接触させる。水溶性インキは水
と接触させても水には直ちには溶解せず、金属またはプ
ラスチックの表面から箔片状となって剥離する。したが
って、本発明の方法によれば、洗浄に使用した水中に混
入した水溶性インキの箔片をろ過等の方法によって分離
すれば、その水を再び洗浄に使用することができる。こ
のために洗浄に使用した水を水溶性インキの溶解によっ
て汚染することなく、容易に再利用が可能となる。
After drying the water-soluble ink in this manner, the water-soluble ink is brought into contact with water. The water-soluble ink does not immediately dissolve in water even when brought into contact with water, and peels off in the form of foil from the surface of metal or plastic. Therefore, according to the method of the present invention, if the foil pieces of the water-soluble ink mixed in the water used for washing are separated by a method such as filtration, the water can be used again for washing. Therefore, the water used for washing can be easily reused without being contaminated by the dissolution of the water-soluble ink.

【0010】本発明においては、金属またはプラスチッ
クの表面からの水溶性インキの剥離を良好に行うため
に、中性の水よりも酸または塩基性化合物を溶解した酸
性またはアルカリ性の水溶液を使用するほうが好まし
い。酸性またはアルカリ性の水溶液としては、pHが3
以下、または10以上から選択することが好ましいが、
酸性の水溶液は金属の腐食の原因になることがあるため
に、pHの範囲は洗浄の対象物に応じて適宜選択すれば
よい。
In the present invention, in order to favorably peel the water-soluble ink from the surface of metal or plastic, it is preferable to use an acidic or alkaline aqueous solution in which an acid or basic compound is dissolved rather than neutral water. preferable. The pH of an acidic or alkaline aqueous solution is 3
It is preferable to select from the following, or from 10 or more,
Since the acidic aqueous solution may cause metal corrosion, the pH range may be appropriately selected according to the object to be cleaned.

【0011】水と接触させる方法としては、水溶性イン
キの付着した金属またはプラスチックを水中に浸漬する
方法、水溶性インキの付着した金属またはプラスチック
に水を噴霧する方法等を挙げることができる。特に本発
明においては水溶性インキの付着した金属またはプラス
チックに、高水圧、例えば、1ないし5kg/cm2
水を噴霧する方法が好適である。
Examples of the method of contacting with water include a method of immersing a metal or plastic having a water-soluble ink in water, a method of spraying water on a metal or plastic having a water-soluble ink. Particularly in the present invention, a method of spraying water having a high water pressure, for example, 1 to 5 kg / cm 2 onto a metal or plastic to which a water-soluble ink is attached is suitable.

【0012】[0012]

【発明の効果】本発明の方法によれば、金属またはプラ
スチックの表面から水溶性インキを箔片状で剥離させる
ことができるために、洗浄に使用した水中に混入した水
溶性インキの箔片をろ過等の方法によって分離すれば、
その水を再び洗浄に使用することができる。したがっ
て、本発明の方法は、洗浄に使用した水を水溶性インキ
の溶解によって汚染することなく、容易に再利用が可能
となる有用な方法である。
According to the method of the present invention, since the water-soluble ink can be peeled off from the surface of metal or plastic in the form of a foil piece, the foil piece of the water-soluble ink mixed in the water used for cleaning is removed. If separated by a method such as filtration,
The water can be used again for washing. Therefore, the method of the present invention is a useful method in which water used for washing can be easily reused without being contaminated by the dissolution of the water-soluble ink.

【0013】[0013]

【実施例】以下に、実施例及び比較例を掲げて本発明を
詳細に説明するが、本発明はこれら実施例に限定される
ものではない。
The present invention will be described in detail below with reference to examples and comparative examples, but the present invention is not limited to these examples.

【0014】<実施例1>水溶性インキ(東洋インキ
製:PW−170AQ)中に4×8cmのステンレスス
チール、銅およびアルミニウムの板を浸漬し、それぞれ
の板の表面全面に水溶性インキを塗布し、これらの板を
温度100℃に設定した恒温槽中で30分間乾燥させ
た。次いで、水酸化ナトリウムを溶解させてpH=10
に調整したアルカリ性水溶液を洗浄液として上記の板に
水圧2kg/cm2 でスプレーし、板の表面に付着した
水溶性インキを剥離させた。その結果、いずれの板の場
合も水溶性インキは箔片状となって板の表面から完全に
剥離した。また、洗浄液への水溶性インキの溶解は全く
なかった。さらに、洗浄液中の水溶性インキの箔片は、
洗浄液をろ過することによって容易に除去可能であっ
た。
Example 1 A 4 × 8 cm plate of stainless steel, copper and aluminum was dipped in a water-soluble ink (PW-170AQ manufactured by Toyo Ink Co., Ltd.), and the water-soluble ink was applied to the entire surface of each plate. Then, these plates were dried for 30 minutes in a constant temperature bath set at a temperature of 100 ° C. Then, dissolve sodium hydroxide to pH = 10
The alkaline aqueous solution prepared as above was used as a cleaning solution and sprayed on the plate at a water pressure of 2 kg / cm 2 to remove the water-soluble ink adhering to the surface of the plate. As a result, in any of the plates, the water-soluble ink was in the form of foil and completely peeled from the surface of the plate. Further, the water-soluble ink was not dissolved in the cleaning liquid at all. Furthermore, the foil piece of water-soluble ink in the cleaning liquid
It could be easily removed by filtering the wash solution.

【0015】<実施例2>pH=10に調整したアルカ
リ性水溶液に代えて、表1に示した水、アルカリ性水溶
液または酸性水溶液を使用し、ステンレススチールの板
を使用した他は実施例1と全く同様に行い、水溶性イン
キの剥離性を表1に示した。いずれの洗浄液を使用した
場合も洗浄液への水溶性インキの溶解は全くなかった。
また、洗浄液中の水溶性インキの箔片は、洗浄液をろ過
することによって容易に除去可能であった。尚、表1に
おいて水溶性インキの剥離性は、板の全表面積に占める
水溶性インキの剥離面積の割合(%)で表示した。
<Example 2> In place of the alkaline aqueous solution adjusted to pH = 10, water, an alkaline aqueous solution or an acidic aqueous solution shown in Table 1 was used, and a stainless steel plate was used. Similarly, the releasability of the water-soluble ink is shown in Table 1. No water-soluble ink was dissolved in the cleaning liquid when any of the cleaning liquids was used.
Further, the water-soluble ink foil pieces in the cleaning liquid could be easily removed by filtering the cleaning liquid. In Table 1, the releasability of the water-soluble ink is shown by the ratio (%) of the releasable area of the water-soluble ink to the total surface area of the plate.

【0016】<実施例3>乾燥を表2に示した条件で行
い、ステンレススチールの板を使用した他は実施例1と
全く同様に行い、水溶性インキの剥離性を表2に示し
た。いずれの場合も洗浄液への水溶性インキの溶解は全
くなかった。また、洗浄液中の水溶性インキの箔片は、
洗浄液をろ過することによって容易に除去することが可
能であった。
<Example 3> Drying was carried out under the conditions shown in Table 2 and exactly the same as Example 1 except that a stainless steel plate was used, and the releasability of the water-soluble ink is shown in Table 2. In any case, the water-soluble ink was not dissolved in the cleaning liquid. Also, the foil piece of water-soluble ink in the cleaning liquid
It was possible to easily remove the washing liquid by filtering.

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 金属またはプラスチックに付着した水溶
性インキを乾燥させた後、水と接触させることを特徴と
する水溶性インキ付着物の洗浄方法。
1. A method for cleaning water-soluble ink deposits, which comprises contacting with water after drying the water-soluble ink attached to metal or plastic.
JP04262461A 1992-09-30 1992-09-30 Cleaning method for water-soluble ink deposits Expired - Fee Related JP3138078B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP04262461A JP3138078B2 (en) 1992-09-30 1992-09-30 Cleaning method for water-soluble ink deposits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP04262461A JP3138078B2 (en) 1992-09-30 1992-09-30 Cleaning method for water-soluble ink deposits

Publications (2)

Publication Number Publication Date
JPH06115056A true JPH06115056A (en) 1994-04-26
JP3138078B2 JP3138078B2 (en) 2001-02-26

Family

ID=17376110

Family Applications (1)

Application Number Title Priority Date Filing Date
JP04262461A Expired - Fee Related JP3138078B2 (en) 1992-09-30 1992-09-30 Cleaning method for water-soluble ink deposits

Country Status (1)

Country Link
JP (1) JP3138078B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016198986A (en) * 2015-04-13 2016-12-01 凸版印刷株式会社 Washing waste liquid clarification method, plate washing method, and plate washing equipment
CN110813967A (en) * 2019-11-04 2020-02-21 徐州市华阳油墨化学有限公司 Device for cleaning ink tank body

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016198986A (en) * 2015-04-13 2016-12-01 凸版印刷株式会社 Washing waste liquid clarification method, plate washing method, and plate washing equipment
CN110813967A (en) * 2019-11-04 2020-02-21 徐州市华阳油墨化学有限公司 Device for cleaning ink tank body

Also Published As

Publication number Publication date
JP3138078B2 (en) 2001-02-26

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