WO2004090926A1 - カラー陰極線管用パネルの再生洗浄方法 - Google Patents
カラー陰極線管用パネルの再生洗浄方法 Download PDFInfo
- Publication number
- WO2004090926A1 WO2004090926A1 PCT/JP2004/005211 JP2004005211W WO2004090926A1 WO 2004090926 A1 WO2004090926 A1 WO 2004090926A1 JP 2004005211 W JP2004005211 W JP 2004005211W WO 2004090926 A1 WO2004090926 A1 WO 2004090926A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- panel
- cathode ray
- cleaning
- ray tube
- regenerating
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
- H01J9/52—Recovery of material from discharge tubes or lamps
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/82—Recycling of waste of electrical or electronic equipment [WEEE]
Definitions
- the present invention relates to a method for regenerating and cleaning a panel for a color cathode ray tube applied when regenerating a panel which is a component part of a color cathode ray tube.
- FIG. 3 is a schematic sectional view showing the configuration of a panel for a color cathode ray tube.
- the color cathode ray tube is composed of components such as panels and funnels.
- the panel 1 is made of glass.
- the phosphor layer 3 is formed on the inner surface (effective surface) of the panel 1 in a predetermined pattern of stripes or dots. The gaps between these phosphor stripes or dots are filled in black with the graphite layer 2 to form a so-called black matrix.
- panel 1 is regenerated and cleaned by the following process.
- Fig. 4 shows the procedure of a conventional method for regenerating and cleaning a color cathode ray tube panel. It is a tip chart.
- the phosphor layer 3 that is easily peeled off is removed from the inner surface of the panel 1 in advance by washing with high-pressure pure water of the following level (Step S9l) c
- hydrofluoric acid having a concentration of about 10% by weight is obtained. Wash the inner surface of panel 1 using (Step S92).
- the purpose of this cleaning is to reliably remove the graphite layer 2 that is difficult to peel off by corroding the glass surface with hydrofluoric acid.
- the inner surface of panel 1 is washed with industrial water to remove hydrofluoric acid adhering to the inner surface of panel 1 (step S93).
- the inner surface of the panel 1 is washed with pure water, wash the ionic substances, dust or the like adhering to the inner surface of the panel 1 (step S 94) to c
- step S 95 the remaining foreign matter adhering to the inner surface of panel 1 is completely removed.
- the concentration of hydrofluoric acid varies depending on the number of regenerating treatments, and the length of time that the panel is left after forming a phosphor screen increases the panel length. Adhesion between the inner surface of (1) and the graphite layer (2) is improved, and peeling becomes more difficult.
- FIG. 5 is a diagram showing an etching defect generated on a panel by a conventional method for regenerating and cleaning a panel for a color cathode ray tube. If the adhesion between the inner surface of the panel 1 and the Dalaphite layer 2 is improved and peeling becomes more difficult, etching defects such as the formation of irregularities on the inner surface of the panel 1 may occur as shown in FIG. There is.
- the graphite layer 2 remains thin on the inner surface of the panel 1. For this reason, hydrofluoric acid In the case of the treatment using, the corrosion rate of the glass surface due to hydrofluoric acid differs between the portion where the graphite layer 2 remains and the portion where the graphite layer 2 does not remain. May be formed, and the phosphor screen may not be able to be reformed.
- hydrofluoric acid has a pungent odor and is extremely toxic, penetrating into the skin when it comes into contact with it, and causing significant damage to the skin.
- Hydrofluoric acid dissolves glass and requires very careful handling and management. Hydrofluoric acid also needs to be drained after special treatment, which is inappropriate from the viewpoint of waste liquid treatment costs. Therefore, the equipment using hydrofluoric acid became large-scale, which was not desirable in terms of working environment safety.
- the method for regenerating and cleaning a color cathode ray tube panel includes the steps of: washing the phosphor layer with water from an inner surface of the color cathode ray tube panel on which the graphite layer and the phosphor layer are formed; A method for regenerating and cleaning a panel for a color cathode ray tube, in which the graphite layer is removed from an inner surface to regenerate the panel, the method further comprising: The graphite layer whose film quality has been softened by an agent is washed with water and removed from the inner surface, and the release dissolving agent contains an organic polyphosphonic acid compound.
- FIG. 1 is a flowchart showing a procedure of a method for regenerating and cleaning a panel for a color cathode ray tube according to the present embodiment.
- FIG. 2 is a graph showing the relationship between the liquid temperature of the stripping and dissolving agent for the phosphor coating film according to the present embodiment and the time required for cleaning.
- FIG. 3 is a schematic sectional view showing the configuration of a panel for a color cathode ray tube.
- FIG. 4 is a flowchart showing the procedure of a conventional method for regenerating and cleaning a panel for a color cathode ray tube.
- FIG. 5 is a view showing an etching defect generated on a panel by a conventional cleaning and cleaning method of a panel for a cathode ray tube.
- the graphite layer is cleaned with a release solvent that softens the film quality of the Daraite layer, and the release solvent contains an organic polyphosphonic acid compound.
- the film quality of the graphite layer which is difficult to peel, is softened by the release solvent containing the organic polyphosphonic acid compound, so that the physical strength of the graphite layer with respect to the panel can be reduced. Therefore, by washing the graphite layer whose physical strength has been weakened with water, the graphite layer can be quickly removed from the inner surface of the panel without corroding the inner surface of the panel with hydrofluoric acid as in the prior art. It can be reliably removed. As a result, it is possible to efficiently reproduce a color cathode ray tube panel in which a defect has occurred.
- the stripping dissolving agent preferably further contains an organic acid alkali metal salt and an alkali metal. This is because the physical strength of the graphite layer can be further reduced.
- the organic polyphosphonic acid compound is Alkali metal salts of alkali metal, ethylenediaminetetrakismethylenephosphonic acid alkali metal salt, hexamethylenediaminetetrakismethylenephosphonic acid alkali metal salt, phytic acid alkali metal salt and hydroxyethylidene 1,1,1-diphosphonic acid alkali metal salt It preferably contains at least one member selected from the group consisting of lithium salts. This is because the physical strength of the graphite layer can be further reduced.
- the organic acid alkali metal salts include alkali metal glycolate, alkali metal dalconate, alkali metal maleate, alkali metal tartrate, alkali metal oxalate, alkali metal citrate, and alkali succinate. It preferably contains at least one member selected from the group consisting of lithium salts. This is because the physical strength of the graphite layer can be further reduced.
- the metal alloy preferably contains at least one selected from the group consisting of steel and sodium. This is because the physical strength of the graphite layer can be further reduced.
- the release dissolving agent further includes a surfactant. This is because the release dissolving agent is uniformly penetrated throughout the phosphor screen.
- the surfactant contains a fluorine-based surfactant. This is because the organic polyphosphonic acid compound easily penetrates into the phosphor layer remaining in the graphite layer.
- the fluorosurfactants include sodium fluoroalkyl sulfonate, sodium perfluoroalkyl sulfonate, disodium N-fluorofluorosulfonylglutamate, and 3- (fluoroalkyloxy) -1-alkyl.
- Sodium sulfonate, 3- (e-fluoroalkanoyl N-ethylamino) — 1 Sodium monopropanesulfonate, fluoroalkyl carboxylic acid, perfluoroalkyl carboxylic acid, powder It preferably contains at least one member selected from the group consisting of a fluoroalkyl-1-N-ethylsulfonylglycine salt and a monoperfluoroalkylethyl phosphate. This is because the organic polyphosphonic acid compound easily penetrates into the phosphor layer remaining in the graphite layer.
- the surfactant preferably contains a nonionic surfactant. This is for shortening the time for separating the graphite layer.
- the nonionic surfactant is at least one selected from the group consisting of polyoxypropylene glycol-bismin ⁇ , ⁇ , ⁇ ′, N ′ tetra (polyoxypropylene glycol hydroxyethoxypolyoxyethylene ether). Preferably. This is for shortening the time for peeling the graphite layer.
- the liquid temperature of the stripping dissolving agent be 50 ° C. or more and 80 ° C. or less.
- the physical strength of the graphite layer against the inner surface of the panel can be efficiently and quickly reduced.
- the graphite layer is cleaned by spraying the release dissolving agent onto the inner surface of the panel. This is because the equipment for injection can be easily installed on the mass production line.
- the graphite layer is cleaned by immersing the inner surface of the panel in the release solvent.
- the required amount of the stripping dissolving agent is minimal, and the stripping dissolving agent can be surely penetrated into the graphite layer in the cleaning target range, and the graphite layer can be surely removed.
- the inner surface is immersed in the release dissolving agent while emitting ultrasonic waves to the inner surface of the panel.
- the graphite layer can be efficiently cleaned by the mechanical force of ultrasonic waves. It is preferable to wash the graphite layer by wiping the inner surface of the panel with a wiping member containing the release dissolving agent. It can clean every corner of the inner surface of the panel with time.
- the inner surface of the panel is washed with high-pressure water to remove the phosphor layer, and the graphite layer is removed by washing with high-pressure water. This is because the phosphor layer or the graphite layer is reliably removed by washing with high-pressure water.
- the phosphor layer is removed by washing with water while rotating the panel, and the graphite layer is removed by washing with water while rotating the panel.
- the entire surface of the panel can be thoroughly washed with water to reliably remove the phosphor layer or the graphite layer.
- the phosphor layer is washed and removed with water while the nozzle that blows water is oscillated, and the graphite layer is washed and removed with water while oscillating the nozzle that blows water. By oscillating the nozzle, the entire surface of the panel can be evenly washed with water and the phosphor layer or graphite layer can be reliably removed.
- FIG. 1 is a flowchart showing a procedure of a method for regenerating and cleaning a panel for a color cathode ray tube according to the present embodiment.
- a method for regenerating and cleaning a color cathode ray tube panel according to the present invention will be described in detail with reference to FIGS.
- FIG. 3 for example, in order to regenerate and wash a color cathode ray tube panel having a graphite layer 2 and a phosphor layer 3 formed in a stripe shape, as shown in FIG. 2.
- the temperature of the high-pressure pure water is desirably high temperature water of about 40 ° C. to about 80 ° C., but is not particularly limited.
- a release dissolving agent is sprayed on the inner surface of panel 1 to lightly dissolve the inner surface of panel 1 and to soften the film quality of graphite layer 2
- the physical strength of the graphite layer 2 against the inner surface of the panel 1 is sufficiently weakened without corroding (Step S 2).
- the components of this stripping dissolving agent include, as organic polyphosphonic acid compounds, alkali metal salts of trismethylene trismethylene phosphonic acid, alkali metal salts of ethylenediaminetetrakismethylenephosphonic acid, alkali metal salts of hexamethylenediaminetetraxmethylenephosphonic acid, At least one selected from the group consisting of alkali metal phytate and metal salt of hydroxyethylidene-1,1-diphosphonic acid; At least one selected from the group consisting of alkali metal oxalates, alkali metal dalconate, alkali metal maleate, alkali metal tartrate, alkali metal oxalate, alkali metal citrate, and alkali metal succinate One kind, and alkali metal as potassium And at least one member selected from the group consisting of sodium and sodium, and the surfactant is sodium fluorocarbonate, sodium perfluoroalkylsulfonate, N-perfluene
- a mechanism for cleaning the graphite layer 2 with a release dissolving agent containing such a component will be described.
- the release solvent uniformly penetrates the entire phosphor screen by the action of the surfactant.
- the precoat layer between the inner surface of panel 1 and graphite layer 2 is hydrolyzed by the reaction of the stripping dissolving agent with the organic acid alkali metal salt.
- the reaction of the stripping dissolving agent with the organic acid alkali metal salt and alkali metal dissolves the inner surface of panel 1 lightly and decomposes the dispersant in graphite layer 2 to remove graphite. Softens the film quality of layer 2.
- Such a cycle of the reaction mechanism weakens the physical strength of graphite layer 2 relative to panel 1.
- composition (weight ratio) of the release dissolving agent for example, the following is preferable.
- Organic acid alkali metal salt 0 1 to 1.0 (% by weight)
- Alkali metal 0 1 to 6.0 (% by weight)
- Surfactant 0 to 1.0 (wt%) 5.
- Deionized water Surfactant is an additive that plays a supporting role to further improve the cleaning efficiency (concentration, time, stability, foam suppression), so even if the surfactant is 0% by weight, it will be dissolved by peeling
- the composition of the agent By adjusting the composition of the agent, the function and effect of the present embodiment can be obtained.
- the release dissolving agents prepared with the compositions shown in Examples 1 to 7 in Tables 1 and 2 below were used.
- the release dissolving agents prepared with the compositions shown in the comparative examples in Table 2 were also used.
- composition The unit of the numerical value of each composition is% by weight.
- “Fentant 100 C” shown in 4 in Tables 1 and 2 means sodium perfluoroalkyl sulfonate.
- “Futhergent 100 C” is a business of Neos Product name.
- FIG. 2 is a graph showing the relationship between the liquid temperature of the stripping dissolving agent according to the present embodiment and the time required for cleaning.
- the graphite layer 2 may be washed by immersing the inner surface of the panel 1 in a release dissolving agent while radiating ultrasonic waves to the inner surface of the panel 1, or by using a wiping member containing a release dissolving agent.
- the graphite layer 2 may be washed by wiping the inner surface of the panel 1 while rubbing.
- a sponge can be used as the wiping member.
- the graphite layer 2 and the phosphor layer 3 can be completely removed without corroding the glass and causing poor etching. Can be removed.
- the inner surface of the panel 1 can be efficiently and reliably cleaned in a short period of time.
- the method of regenerating and cleaning a panel for a cathode ray tube by applying a stripping and dissolving agent to the graphite layer 2 formed on the inner surface of the panel 1, The physical strength of the graphite layer 2 with respect to the surface can be sufficiently reduced. Then, in the next high-pressure water washing step, the residues of the graphite layer 2 and the phosphor layer 3 can be efficiently and efficiently removed in a short time and evenly, and the panel can be regenerated.
- a stripping dissolving agent that does not corrode glass is used, it is possible to prevent the occurrence of poor etching. Furthermore, since extremely toxic hydrofluoric acid is not used, the safety of the working environment can be ensured.
- the graphite layer 2 is washed with a release solvent that softens the film quality of the graphite layer 2. For this reason, since the film quality of the graphite layer 2 which is difficult to peel is softened by the peeling solvent, the physical strength of the graphite layer 2 with respect to the panel 1 can be reduced. Therefore, by washing the graphite layer 2 whose film quality has been softened with the stripping dissolving agent with water, the graphite layer 2 can be removed from the panel 1 without corroding the inner surface of the panel with hydrofluoric acid as in the prior art. It can be reliably removed from the inner surface in a short time. As a result, defective color cathode ray tube panels It can be reproduced efficiently.
- the present invention is not limited to this. Both the phosphor layer and the graphite layer may be washed with a stripping dissolving agent.
- the organic polyphosphonic acid compound as the stripping dissolving agent decomposes the polymer and resin contained in the phosphor layer.
- a method for regenerating and cleaning a panel for a color cathode ray tube capable of regenerating and cleaning a panel for a color cathode ray tube without generating defective etching on the inner surface of the panel and without using hydrofluoric acid.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
- Cleaning By Liquid Or Steam (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005505336A JPWO2004090926A1 (ja) | 2003-04-10 | 2004-04-12 | カラー陰極線管用パネルの再生洗浄方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003-106924 | 2003-04-10 | ||
JP2003106924 | 2003-04-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004090926A1 true WO2004090926A1 (ja) | 2004-10-21 |
Family
ID=33156926
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/005211 WO2004090926A1 (ja) | 2003-04-10 | 2004-04-12 | カラー陰極線管用パネルの再生洗浄方法 |
Country Status (2)
Country | Link |
---|---|
JP (1) | JPWO2004090926A1 (ja) |
WO (1) | WO2004090926A1 (ja) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0737509A (ja) * | 1993-07-24 | 1995-02-07 | Sony Corp | カラーブラウン管パネルの再生方法 |
JP2000225550A (ja) * | 1999-02-08 | 2000-08-15 | Mitsubishi Electric Corp | カラーブラウン管ガラスパネルの再生方法及び再生装置 |
JP2003213297A (ja) * | 2002-01-25 | 2003-07-30 | Katayama Kagaku Kogyo Kk | 蛍光体塗膜の剥離溶解用洗浄剤 |
-
2004
- 2004-04-12 JP JP2005505336A patent/JPWO2004090926A1/ja not_active Withdrawn
- 2004-04-12 WO PCT/JP2004/005211 patent/WO2004090926A1/ja active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0737509A (ja) * | 1993-07-24 | 1995-02-07 | Sony Corp | カラーブラウン管パネルの再生方法 |
JP2000225550A (ja) * | 1999-02-08 | 2000-08-15 | Mitsubishi Electric Corp | カラーブラウン管ガラスパネルの再生方法及び再生装置 |
JP2003213297A (ja) * | 2002-01-25 | 2003-07-30 | Katayama Kagaku Kogyo Kk | 蛍光体塗膜の剥離溶解用洗浄剤 |
Also Published As
Publication number | Publication date |
---|---|
JPWO2004090926A1 (ja) | 2006-07-06 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP3441715B2 (ja) | 水性リンス組成物及びそれを用いた方法 | |
CN1203020C (zh) | 从玻璃表面溶解镧系氧化物的方法 | |
JP2941949B2 (ja) | ステンレス鋼アルカリ処理 | |
WO2004090926A1 (ja) | カラー陰極線管用パネルの再生洗浄方法 | |
KR20150016738A (ko) | 모바일용 유리 기판의 재생 방법 | |
CN110459461A (zh) | 一种硅基底的清洗方法 | |
JP2002273358A (ja) | 光学素子の洗浄方法 | |
KR100819180B1 (ko) | 전자사진 감광용 알루미늄 드럼의 제조방법 | |
JP2003213297A (ja) | 蛍光体塗膜の剥離溶解用洗浄剤 | |
JP4055923B2 (ja) | Ito膜除去用組成物及びこれを用いたito膜除去方法 | |
JP3489605B2 (ja) | 金属乾燥法 | |
JP7020905B2 (ja) | 樹脂マスク剥離用洗浄剤組成物 | |
JP3288492B2 (ja) | 金型の洗浄方法 | |
JP3755548B2 (ja) | 金属の乾燥前処理剤及び乾燥方法 | |
JP4758725B2 (ja) | 洗浄剤 | |
JPH06187909A (ja) | ブラウン管用ガラスパネルの洗浄方法 | |
KR20080027610A (ko) | 스테인레스 스틸용 세정제 | |
JP3416555B2 (ja) | ガラス基板の高精度洗浄方法 | |
JP4644037B2 (ja) | 洗浄剤 | |
JP3458873B2 (ja) | 金属乾燥方法 | |
JP3491656B2 (ja) | 金属の乾燥前処理剤および乾燥方法 | |
KR101304622B1 (ko) | 세정제 조성물 | |
JPH09249980A (ja) | 金属材料の湿式エッチング方法 | |
JPH09302490A (ja) | 金属の乾燥法 | |
JPH07155713A (ja) | ブラウン管の蛍光面の洗浄方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): BW GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2005505336 Country of ref document: JP |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
122 | Ep: pct application non-entry in european phase |