JPH0639846A - Degreasing and washing method - Google Patents

Degreasing and washing method

Info

Publication number
JPH0639846A
JPH0639846A JP19886992A JP19886992A JPH0639846A JP H0639846 A JPH0639846 A JP H0639846A JP 19886992 A JP19886992 A JP 19886992A JP 19886992 A JP19886992 A JP 19886992A JP H0639846 A JPH0639846 A JP H0639846A
Authority
JP
Japan
Prior art keywords
pure water
cleaning liquid
spray chamber
resistivity
degreasing
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
Application number
JP19886992A
Other languages
Japanese (ja)
Inventor
Toshinori Iwai
俊憲 岩井
Hidetaka Sawada
英隆 澤田
Takashi Hirano
隆 平野
Shoichi Momose
祥一 百瀬
Shiro Inoue
司朗 井上
Kazunori Koba
和則 木場
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.)
Hitachi Zosen Corp
Original Assignee
Hitachi Zosen 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
Application filed by Hitachi Zosen Corp filed Critical Hitachi Zosen Corp
Priority to JP19886992A priority Critical patent/JPH0639846A/en
Publication of JPH0639846A publication Critical patent/JPH0639846A/en
Pending legal-status Critical Current

Links

Landscapes

  • Cleaning By Liquid Or Steam (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

PURPOSE:To easily perform drain treatment without generating evironmental pollution, at the time of the degreasing and washing of the release agent such as paraffin or zinc stearate bonded to a plastic molded product, by using pure water of which the resistivity, temp. and pressure are specific values or more as washing water. CONSTITUTION:Pure water wherein resistivity is 5MOMEGA.cm or more, temp. is 60 deg.C or higher and pressure is 8kg/cm<2> or more is used as a washing solution. For example, pure water is produced by a multiple-effect pure water producing apparatus 12 to be sent to a spray chamber 12. For example, a car bamper is sent into the spray chamber from the inlet 23 thereof and pure water is sprayed on the bamper from nozzles 22 to obtain the same result as a conventional method using an org. solvent.

Description

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

【0001】[0001]

【産業上の利用分野】この発明は、プラスチック成型品
に付着したパラフィンやステアリン酸亜鉛のような離型
剤等を脱脂洗浄方法に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for degreasing and cleaning a mold release agent such as paraffin or zinc stearate attached to a plastic molded product.

【0002】[0002]

【従来の技術】図2に、従来の方法に使用される装置が
示されている。この装置は、ミストルーム41およびシャ
ワールーム42を備えている。ミストルーム41およびシャ
ワールーム42の天井から被脱脂洗浄物Wが吊下げられて
いる。被脱脂洗浄物Wは、自動車バンパーである。ミス
トルーム41には洗浄液Lが溜められている。洗浄液L
は、トリクロロエタンのような有機溶媒である。洗浄液
Lはヒータ43によって加熱される。加熱されてミストと
なった洗浄液は上昇し、冷却器44で冷却されて結露し、
被脱脂洗浄物Wに付着する。シャワールーム42の適所に
はシャワーヘッド45が配置されており、これらのヘッド
45から上記と同じ有機溶媒よりなる洗浄液が被脱脂洗浄
物Wにかけられる。シャワールーム42から出された被脱
脂洗浄物Wは次工程の塗装工程へ送られる。
2. Description of the Related Art FIG. 2 shows an apparatus used in a conventional method. This device includes a mist room 41 and a shower room 42. The degreased cleaning object W is hung from the ceilings of the mist room 41 and the shower room 42. The cleaning object W to be degreased is an automobile bumper. A cleaning liquid L is stored in the mist room 41. Cleaning liquid L
Is an organic solvent such as trichloroethane. The cleaning liquid L is heated by the heater 43. The cleaning liquid heated to become mist rises, is cooled by the cooler 44, and condenses,
It adheres to the object W to be degreased. Shower heads 45 are arranged at appropriate places in the shower room 42, and these heads are provided.
A cleaning liquid consisting of the same organic solvent as above is applied to the object W to be degreased from 45. The article W to be degreased discharged from the shower room 42 is sent to the coating process of the next process.

【0003】また、別の方法としては、市水に酸または
アルカリを添加した水を洗浄液として用い、これを被脱
脂洗浄物にスプレイするものも知られている。
As another method, there is known a method in which city water containing an acid or an alkali is used as a cleaning liquid and the cleaning liquid is sprayed on the object to be degreased.

【0004】[0004]

【発明が解決しようとする課題】上記において、洗浄液
として有機溶媒を用いる方法では、有機溶媒が環境汚染
の問題からその使用が制限されつつあり、これに代わる
方法の開発が待たれている。
In the above method, the use of the organic solvent as the cleaning liquid is being restricted due to the problem of environmental pollution of the organic solvent, and the development of a method to replace it is awaited.

【0005】一方、洗浄液として、市水に酸またはアル
カリを添加した水を用いる方法では、洗浄液を多量に使
用するため排水が多量に出て、その処理が問題となって
いる。
On the other hand, in the method of using city water to which an acid or an alkali is added as the cleaning liquid, a large amount of the cleaning liquid is used, so that a large amount of waste water is produced, and its treatment is a problem.

【0006】この発明の目的は、上記問題点を解決した
脱脂洗浄方法を提供することにある。
An object of the present invention is to provide a degreasing cleaning method that solves the above problems.

【0007】[0007]

【課題を解決するための手段】この発明による脱脂洗浄
方法は、洗浄液として、抵抗率5MΩ・cm以上、温度6
0℃以上、圧力8kg/cm2 以上の純水を用いることを特
徴とするものである。
In the degreasing cleaning method according to the present invention, the cleaning liquid has a resistivity of 5 MΩ · cm or more and a temperature of 6
It is characterized by using pure water having a temperature of 0 ° C. or more and a pressure of 8 kg / cm 2 or more.

【0008】[0008]

【作用】この発明による脱脂洗浄方法は、洗浄液とし
て、抵抗率5MΩ・cm以上、温度60℃以上、圧力8kg
/cm2 以上の純水を用いるから、有機溶媒のような環境
汚染の問題もなく、酸またはアルカリを用いる必要がな
い。
In the degreasing cleaning method according to the present invention, the cleaning liquid has a resistivity of 5 MΩ · cm or more, a temperature of 60 ° C. or more, and a pressure of 8 kg.
Since pure water of / cm 2 or more is used, there is no problem of environmental pollution such as an organic solvent, and it is not necessary to use acid or alkali.

【0009】[0009]

【実施例】この発明の実施例を、図1を参照して、つぎ
に説明する。
Embodiments of the present invention will be described below with reference to FIG.

【0010】この発明による方法に使用される装置は、
図1に示すように、洗浄装置11、多重効用純水製造装置
12および乾燥器13を備えている。洗浄装置11は、スプレ
イチャンバ21およびスプレイチャンバ21内の適所に配置
されている多数のスプレイノズル22とを備えている。ス
プレイチャンバ21の両端壁には入口23および出口24が設
けられている。出口24には水切り装置25が備えられてい
る。スプレイチャンバ21は、多重効用純水製造装置12に
純水供給管26および純水回収管27でそれぞれ接続されて
いる。また、多重効用純水製造装置12には、排水管28お
よび市水補給管29がそれぞれ接続されている。乾燥器13
は、サクションチャンバ31を備えている。サクションチ
ャンバ31の両端壁には入口32および出口33が設けられて
いる。また、サクションチャンバ31の適所には多数のサ
クションポート34が設けられ、これらにサクションパイ
プ35が接続されている。さらに、サクションチャンバ31
には、清浄空気供給管36が接続されている。
The device used in the method according to the invention is
As shown in FIG. 1, a cleaning device 11, a multi-effect pure water production device
12 and dryer 13 are provided. The cleaning device 11 includes a spray chamber 21 and a large number of spray nozzles 22 arranged at appropriate positions in the spray chamber 21. An inlet 23 and an outlet 24 are provided on both end walls of the spray chamber 21. A drainer 25 is provided at the outlet 24. The spray chamber 21 is connected to the multi-effect pure water producing device 12 by a pure water supply pipe 26 and a pure water recovery pipe 27, respectively. A drain pipe 28 and a city water supply pipe 29 are connected to the multi-effect pure water producing device 12, respectively. Dryer 13
Includes a suction chamber 31. An inlet 32 and an outlet 33 are provided on both end walls of the suction chamber 31. Further, a large number of suction ports 34 are provided at appropriate places in the suction chamber 31, and a suction pipe 35 is connected to these. Furthermore, the suction chamber 31
A clean air supply pipe 36 is connected to.

【0011】多重効用純水製造装置12では、抵抗率5M
Ω・cm以上、温度60℃以上、圧力8kg/cm2 以上の純
水が生産され、これが、洗浄液として、スプレイチャン
バ21に供給される。
In the multi-effect pure water producing apparatus 12, the resistivity is 5M.
Pure water of Ω · cm or more, temperature of 60 ° C. or more, and pressure of 8 kg / cm 2 or more is produced, and this is supplied to the spray chamber 21 as a cleaning liquid.

【0012】上記乾燥器13に代えて、温風または冷風乾
燥器、遠赤外線乾燥器、真空乾燥器等を用いても良い。
Instead of the dryer 13, a hot air or cold air dryer, a far infrared ray dryer, a vacuum dryer or the like may be used.

【0013】被脱脂洗浄物Wは、自動車バンパーであ
る。
The article W to be degreased is an automobile bumper.

【0014】多重効用純水製造装置12から純水供給管26
を通じてスプレイチャンバ21に洗浄液が供給され、供給
された洗浄液はノズル22からスプレイされる。バンパー
Wは、図示しない手段で、入口23からスプレイチャンバ
21内に送り込まれ、チャンバ21内を搬送される間に、ノ
ズル22からスプレイされる洗浄液が均一に散布され、ダ
ンパーWに付着した離型剤が除去される。離型剤を除去
したバンパーWが出口24からスプレイチャンバ21を出る
際、水切り装置25でバンパーWに付着した洗浄液が水切
りされる。
Pure water supply pipe 26 from the multi-effect pure water producing device 12
The cleaning liquid is supplied to the spray chamber 21 through the nozzle, and the supplied cleaning liquid is sprayed from the nozzle 22. The bumper W is a means (not shown) from the inlet 23 to the spray chamber.
While being fed into the chamber 21 and transported in the chamber 21, the cleaning liquid sprayed from the nozzle 22 is uniformly sprayed, and the release agent attached to the damper W is removed. When the bumper W from which the release agent has been removed exits the spray chamber 21 from the outlet 24, the cleaning liquid attached to the bumper W is drained by the drainer 25.

【0015】スプレイチャンバ21内で使用された洗浄液
は、純水回収管27を通じて多重効用純水製造装置12へ戻
され、再利用される。多重効用純水製造装置12で濃縮処
理された純水のみが排水管28を通じて排出される。排出
される純水は、必要に応じて排水処理される。一方、必
要に応じて、多重効用純水製造装置12に市水が市水補給
管29で補給される。
The cleaning liquid used in the spray chamber 21 is returned to the multiple-effect pure water producing apparatus 12 through the pure water recovery pipe 27 and reused. Only the pure water concentrated by the multi-effect pure water producing device 12 is discharged through the drain pipe 28. The pure water discharged is subjected to wastewater treatment as necessary. On the other hand, city water is replenished to the multi-effect pure water producing apparatus 12 by a city water supply pipe 29 as needed.

【0016】スプレイチャンバ21を出たパンパーWは、
サクションチャンバ31へ送られ、サクションチャンバ31
内を通過する間に、バンパーWに付着していた洗浄液が
完全に乾燥される。
The pumper W exiting the spray chamber 21
Suction chamber 31 is sent to suction chamber 31
While passing through the inside, the cleaning liquid attached to the bumper W is completely dried.

【0017】つぎに、この発明による方法の洗浄効果に
ついて、従来法との比較のもとに説明する。
Next, the cleaning effect of the method according to the present invention will be described in comparison with the conventional method.

【0018】従来法は、洗浄液として有機溶媒を用いる
従来例の項で説明した方法によった。この発明による方
法では、抵抗率5MΩ・cm以上、温度80℃、圧力8kg
/cm2 Gの純水を用いた。この純水は、蒸留法高温純水
装置によって得られた超純水と市水を逆浸透膜に通した
水とを混合し、抵抗率を5MΩ・cmに調整したものであ
る。
The conventional method was the method described in the section of the conventional example using an organic solvent as the cleaning liquid. In the method according to the present invention, the resistivity is 5 MΩ · cm or more, the temperature is 80 ° C., and the pressure is 8 kg.
/ Cm 2 G of pure water was used. This pure water was prepared by mixing ultrapure water obtained by a distillation high-temperature pure water device and water obtained by passing city water through a reverse osmosis membrane, and adjusting the resistivity to 5 MΩ · cm.

【0019】洗浄効果は、塗料付着性および臨界表面張
力によって判定される。塗料付着性は、つぎのテストに
より行われる。洗浄後のパンパーに塗料を塗り、これを
刻んで1mm×1mmの大きさの碁盤目状100個のテスト
ピースをつくり、これにテープを張付け、テープを剥が
した後、剥がれ無かったテストピースの個数を数える。
臨界表面張力を洗浄の前後で測定する。洗浄前の臨界表
面張力は、25dyne/cm2 であった。
The cleaning effect is judged by the paint adhesion and the critical surface tension. Paint adhesion is determined by the following test. Paint the paint on the washed pumper and carve it into 100 grid-shaped test pieces of 1 mm x 1 mm size. Stick the tape on the test piece and peel off the tape. Count.
The critical surface tension is measured before and after washing. The critical surface tension before washing was 25 dyne / cm 2 .

【0020】判定結果を、表1に示す。Table 1 shows the judgment results.

【0021】 <表1> 塗料付着性 臨界表面張力 従来法 ; 100個 32〜36dyne/cm2 本発明法 ; 100個 34〜36dyne/cm2 表1からあきらかなように、この発明による方法および
従来法の判定結果において、塗料付着性は全く同じであ
り、臨界表面張力は大差がなくてほぼ同じ範囲であり、
有機溶媒を用いなくても、従来法と同様な良好な結果が
得られることがわかる。
<Table 1> Paint adhesion Critical surface tension conventional method: 100 pieces 32-36 dyne / cm 2 Invention method; 100 pieces 34-36 dyne / cm 2 As is apparent from Table 1, the method according to the present invention and the conventional method In the judgment result of the method, the paint adhesion is exactly the same, the critical surface tension is almost the same range without much difference,
It can be seen that good results similar to the conventional method can be obtained without using an organic solvent.

【0022】[0022]

【発明の効果】この発明によれば、有機溶媒のような環
境汚染の問題もなく、酸またはアルカリを用いる必要が
ないから、排水処理を容易に行うことがてきる。
According to the present invention, there is no problem of environmental pollution such as an organic solvent, and it is not necessary to use an acid or an alkali, so that wastewater treatment can be easily performed.

【図面の簡単な説明】[Brief description of drawings]

【図1】この発明による方法に使用される装置の配置構
成図である。
1 is a layout of the apparatus used in the method according to the invention.

【図2】従来法に使用される装置の配置構成図である。FIG. 2 is an arrangement configuration diagram of an apparatus used in a conventional method.

【符号の説明】[Explanation of symbols]

11 洗浄装置 12 純水製造装置 13 乾燥器 21 スプレイチャンバ 22 ノズル 11 Cleaning device 12 Pure water production device 13 Dryer 21 Spray chamber 22 Nozzle

───────────────────────────────────────────────────── フロントページの続き (72)発明者 百瀬 祥一 大阪市此花区西九条5丁目3番28号 日立 造船株式会社内 (72)発明者 井上 司朗 大阪市此花区西九条5丁目3番28号 日立 造船株式会社内 (72)発明者 木場 和則 大阪市此花区西九条5丁目3番28号 日立 造船株式会社内 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Shoichi Momose 5-3-28 Nishikujo, Konohana-ku, Osaka City Hitachi Shipbuilding Co., Ltd. (72) Inoue Shiro 5-28 Nishijojo, Konohana-ku, Osaka No. Hitachi Shipbuilding Co., Ltd. (72) Inventor Kazunori Kiba 5-3-8, Nishikujo, Konohana-ku, Osaka City Hitachi Shipbuilding Co., Ltd.

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 洗浄液として、抵抗率5MΩ・cm以上、
温度60℃以上、圧力8kg/cm2 以上の純水を用いるこ
とを特徴とする脱脂洗浄方法。
1. A cleaning liquid having a resistivity of 5 MΩ · cm or more,
A degreasing and cleaning method characterized by using pure water having a temperature of 60 ° C or higher and a pressure of 8 kg / cm 2 or higher.
JP19886992A 1992-07-24 1992-07-24 Degreasing and washing method Pending JPH0639846A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19886992A JPH0639846A (en) 1992-07-24 1992-07-24 Degreasing and washing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19886992A JPH0639846A (en) 1992-07-24 1992-07-24 Degreasing and washing method

Publications (1)

Publication Number Publication Date
JPH0639846A true JPH0639846A (en) 1994-02-15

Family

ID=16398282

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19886992A Pending JPH0639846A (en) 1992-07-24 1992-07-24 Degreasing and washing method

Country Status (1)

Country Link
JP (1) JPH0639846A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8349782B2 (en) 2011-02-15 2013-01-08 Ecolab Usa Inc. Hydrophobic and particulate soil removal composition
US8808464B2 (en) 2011-02-15 2014-08-19 Ecolab Usa Inc. Method for removal of a hydrophobic and particulate soil composition

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61156740A (en) * 1984-12-27 1986-07-16 Toshiba Corp Semiconductor manufacturing device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61156740A (en) * 1984-12-27 1986-07-16 Toshiba Corp Semiconductor manufacturing device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8349782B2 (en) 2011-02-15 2013-01-08 Ecolab Usa Inc. Hydrophobic and particulate soil removal composition
US8808464B2 (en) 2011-02-15 2014-08-19 Ecolab Usa Inc. Method for removal of a hydrophobic and particulate soil composition

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