EP1338680A1 - Apparatus for degreasing and drying metallic, ceramic or polymeric articles - Google Patents
Apparatus for degreasing and drying metallic, ceramic or polymeric articles Download PDFInfo
- Publication number
- EP1338680A1 EP1338680A1 EP02406032A EP02406032A EP1338680A1 EP 1338680 A1 EP1338680 A1 EP 1338680A1 EP 02406032 A EP02406032 A EP 02406032A EP 02406032 A EP02406032 A EP 02406032A EP 1338680 A1 EP1338680 A1 EP 1338680A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- deionized water
- drying
- degreasing
- vacuum
- mixture
- 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
- 238000001035 drying Methods 0.000 title claims abstract description 15
- 238000005238 degreasing Methods 0.000 title claims abstract description 8
- 239000000919 ceramic Substances 0.000 title claims abstract description 5
- 239000002904 solvent Substances 0.000 claims abstract description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000008367 deionised water Substances 0.000 claims abstract description 14
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 14
- 239000007864 aqueous solution Substances 0.000 claims abstract description 13
- 239000000203 mixture Substances 0.000 claims abstract description 13
- 238000005406 washing Methods 0.000 claims abstract description 13
- 229920000642 polymer Polymers 0.000 claims abstract description 4
- 238000009434 installation Methods 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 239000003599 detergent Substances 0.000 description 5
- 239000012071 phase Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 239000012808 vapor phase Substances 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000004200 deflagration Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000011086 high cleaning Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000001291 vacuum drying Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/14—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects using gases or vapours other than air or steam, e.g. inert gases
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/08—Cleaning involving contact with liquid the liquid having chemical or dissolving effect
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
- C11D7/50—Solvents
- C11D7/5004—Organic solvents
- C11D7/5027—Hydrocarbons
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G5/00—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents
- C23G5/02—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents using organic solvents
- C23G5/024—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents using organic solvents containing hydrocarbons
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G5/00—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents
- C23G5/02—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents using organic solvents
- C23G5/04—Apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B5/00—Drying solid materials or objects by processes not involving the application of heat
- F26B5/04—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D2111/00—Cleaning compositions characterised by the objects to be cleaned; Cleaning compositions characterised by non-standard cleaning or washing processes
- C11D2111/10—Objects to be cleaned
- C11D2111/14—Hard surfaces
- C11D2111/16—Metals
Definitions
- the present invention relates to a degreasing device and drying of mechanical parts or flammable solvents.
- the CH-A-692 084 proposes the use of a solvent for flammable solvents to replace chlorinated solvents for degreasing-washing in the mechanical industry.
- DE-A-43 29 178 offers the use of isoparaffinic solvents or modified alcohol.
- the solvent according to this patent is of the isoparaffin or alkane type whose flash point is between 40 ° C and 100 ° C.
- Metal parts are immersed in the solvent which is in an enclosure waterproof.
- the pressure in the enclosure is less than 120 mbar and the temperature above 60 ° C inside the enclosure.
- Legislation (OPAIR) requires machines using waterproof chlorinated solvents.
- the mixture of chlorinated solvent and of water in a washing cycle is prohibited by law (OPEL).
- Cleaning parts with non-polar soiling (mineral oils for example) and polar (particles, oxides, salts) cannot be resolved satisfactorily or with chlorinated or isoparaffinic solvents, or with detergents, their effectiveness being quickly inhibited by oils.
- the object of the present invention is to propose a device for degreasing and drying of parts which improves the qualities of the degreasing system.
- the device uses in a first phase washing a mixture of isoparaffin solvents at a temperature higher than the flash point, under vacuum or at temperature minus 15 ° C below the flash point, when the installation does not not work in vacuum.
- a second phase the device uses an aqueous solution heated above 45 ° C, consisting deionized water, said washing being followed by a rinsing carried out deionized water and then drying carried out under vacuum.
- a single-tank installation is used to immerse the parts to be cleaned in different solvents and rinsing agents.
- the entire hydrocarbon solvent circuit is under vacuum about 120 mbar, to ensure the safety of the installation when the solvent is heated above the flash point.
- the device presented here represents a development of the patent No 692084. Said patent uses only isoparaffin solvent.
- the device described here first uses a solvent of the type isoparaffin, under vacuum, above the flash point and secondly an aqueous solution of composition suitable for metals to treat.
- the aqueous solution is made with deionized water and contains less than 1% detergents, so reduce entrainment in the flushing circuit.
- Rinsing is carried out in the enclosure in deionized water.
- Drying is carried out in the enclosure, under vacuum.
- the flash point is the temperature the lowest vapor concentration sufficient to produce a deflagration on contact of a flame but insufficient to produce the propagation of combustion in the absence of the pilot flame.
- the main advantage is to perform high cleaning quality, because the isoparaffinic solvent removes dirt non-polar (fat in particular), while the solution aqueous removes polar soils (inorganic matter and particles).
- the aqueous solution is practically not polluted by organic soils, since these were dissolved during the first wash. Soiling inorganics are practically not eliminated by solvents isoparaffins. They are however easily dissolved by a aqueous solution.
- the cleaning sequence is therefore an element paramount.
- a device having reservoirs allowing the use of one or more different aqueous solutions and a production facility deionized water in a closed circuit.
- Final drying can optionally be carried out by a vapor phase with isoparaffin solvent followed by drying under vacuum, which protects the parts against corrosion.
- the figure shows schematically a degreasing device and drying of metallic, ceramic or polymer parts.
- the figure shows a reservoir 1 of primary isoparaffinic solvents, a reservoir 2 of secondary isoparaffinic solvents, a working chamber 3 of the single-tank installation, a distiller 4 of isoparaffinic solvents, a device 5 for producing deionized water in a closed circuit, tanks 6 of detergent solvents and a distillation resentant 7.
- the solvent in tank 1 and the distillate in tank 2 is a mixture of isoparaffin solvents C g to C 11 .
- the device is equipped with a vacuum system, which makes it possible to maintain a pressure below 12o mbar and to use the isoparaffin solvent above the flash point and to dry the parts under vacuum, after a first or a second washing. It is possible to add an isoparaffinic solvent vapor phase and vacuum drying after washing with detergent, to protect the parts against corrosion.
- a mixture of isoparaffin solvents C 9 to C 11 is used at a temperature above the flash point under vacuum or at a temperature of at least 15 ° C below the flash point, when the installation does not work under vacuum.
- the device uses an aqueous solution heated above 45 ° C. This aqueous solution consists of deionized water and a composition suitable for the parts to be cleaned. Washing is followed by rinsing with deionized water and then drying carried out under vacuum.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Metallurgy (AREA)
- Wood Science & Technology (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
- Cleaning By Liquid Or Steam (AREA)
Abstract
Description
La présente invention concerne un dispositif de dégraissage et séchage de pièces mécaniques ou de solvants inflammables. Le CH-A-692 084 propose l'utilisation d'un solvant de solvants inflammables pour remplacer des solvants chlorés pour le dégraissage-lavage dans l'industrie mécanique. Le DE-A-43 29 178 propose l'utilisation de solvants isoparaffiniques ou alcool modifié.The present invention relates to a degreasing device and drying of mechanical parts or flammable solvents. The CH-A-692 084 proposes the use of a solvent for flammable solvents to replace chlorinated solvents for degreasing-washing in the mechanical industry. DE-A-43 29 178 offers the use of isoparaffinic solvents or modified alcohol.
Le solvant selon de ce brevet est du type isoparaffine ou alcane dont le point-éclair est situé entre 40°C 100°C. Les pièces métalliques sont immergées dans le solvant qui est dans une enceinte étanche. La pression dans l'enceinte est à moins de 120 mbar et la température à plus de 60°C à l'intérieur de l'enceinte. La législation (OPAIR) impose des machines utilisant des solvants chlorés étanches. Le mélange de solvant chloré et d'eau dans un cycle de lavage est proscrit par la législation (OPEL). Le nettoyage de pièces présentant des salissures non-polaires (huiles minérales par exemple) et polaires (particules, oxydes, sels) ne peut être résolu de manière satisfaisante ni avec des solvants chlorés ou isoparaffiniques, ni avec des lessives, leur efficacité étant rapidement inhibée par les huiles. The solvent according to this patent is of the isoparaffin or alkane type whose flash point is between 40 ° C and 100 ° C. Metal parts are immersed in the solvent which is in an enclosure waterproof. The pressure in the enclosure is less than 120 mbar and the temperature above 60 ° C inside the enclosure. Legislation (OPAIR) requires machines using waterproof chlorinated solvents. The mixture of chlorinated solvent and of water in a washing cycle is prohibited by law (OPEL). Cleaning parts with non-polar soiling (mineral oils for example) and polar (particles, oxides, salts) cannot be resolved satisfactorily or with chlorinated or isoparaffinic solvents, or with detergents, their effectiveness being quickly inhibited by oils.
La présente invention a pour but de proposer un dispositif de dégraissage et séchage de pièces qui améliore les qualités du système de dégraissage.The object of the present invention is to propose a device for degreasing and drying of parts which improves the qualities of the degreasing system.
Selon l'invention le dispositif utilise dans une première phase de lavage un mélange de solvants isoparaffines à une température supérieure au point-éclair, sous vide ou à la température d'au moins 15°C en-dessous du point-éclair, lorsque l'installation ne travaille pas sous vide. Dans une deuxième phase le dispositif utilise une solution aqueuse chauffée au-dessus de 45°C, constituée d'eau désionisée, ledit lavage étant suivi d'un rinçage effectué de l'eau désionisée puis d'un séchage réalisé sous vide.According to the invention the device uses in a first phase washing a mixture of isoparaffin solvents at a temperature higher than the flash point, under vacuum or at temperature minus 15 ° C below the flash point, when the installation does not not work in vacuum. In a second phase the device uses an aqueous solution heated above 45 ° C, consisting deionized water, said washing being followed by a rinsing carried out deionized water and then drying carried out under vacuum.
Une installation monocuve est utilisée pour immerger les pièces à nettoyer dans différents solvants et agents de rinçage.A single-tank installation is used to immerse the parts to be cleaned in different solvents and rinsing agents.
L'ensemble du circuit de solvant hydrocarbure est sous vide d'environ 120 mbar, afin d'assurer la sécurité de l'installation lorsque le solvant est chauffé au-dessus du point-éclair. Le dispositif présenté ici représente un développement du brevet No 692084. Ledit brevet n'utilise que du solvant isoparaffine. Le dispositif décrit ici utilise premièrement un solvant de type isoparaffine, sous vide, au-dessus du point-éclair et deuxièmement une solution aqueuse de composition adaptée aux métaux à traiter. La solution aqueuse est réalisée avec de l'eau désionisée et contient moins de 1% d'agents détergents, de manière à réduire les entraínements dans le circuit de rinçage. Le rinçage est réalisé dans l'enceinte en eau désionisée. Le séchage est effectué dans l'enceinte, sous vide. Le point-éclair est la température la plus basse à laquelle la concentration de vapeur émise est suffisante pour produire une déflagration au contact d'une flamme mais insuffisante pour produire la propagation de la combustion en l'absence de la flamme pilote.The entire hydrocarbon solvent circuit is under vacuum about 120 mbar, to ensure the safety of the installation when the solvent is heated above the flash point. The device presented here represents a development of the patent No 692084. Said patent uses only isoparaffin solvent. The device described here first uses a solvent of the type isoparaffin, under vacuum, above the flash point and secondly an aqueous solution of composition suitable for metals to treat. The aqueous solution is made with deionized water and contains less than 1% detergents, so reduce entrainment in the flushing circuit. Rinsing is carried out in the enclosure in deionized water. Drying is carried out in the enclosure, under vacuum. The flash point is the temperature the lowest vapor concentration sufficient to produce a deflagration on contact of a flame but insufficient to produce the propagation of combustion in the absence of the pilot flame.
Le principal avantage consiste à réaliser un nettoyage de haute qualité, car le solvant isoparaffinique élimine les salissures non-polaires (matières grasses en particulier), alors que la solution aqueuse élimine les salissures polaires (matières inorganiques et particules). La solution aqueuse n'est pratiquement pas polluée par les salissures organiques, étant donné que celles-ci ont été dissoutes lors du premier lavage. Les salissures inorganiques ne sont pratiquement pas éliminées par les solvants isoparaffines. Elle sont par contre facilement dissoutes par une solution aqueuse. La séquence des nettoyages est donc un élément primordial.The main advantage is to perform high cleaning quality, because the isoparaffinic solvent removes dirt non-polar (fat in particular), while the solution aqueous removes polar soils (inorganic matter and particles). The aqueous solution is practically not polluted by organic soils, since these were dissolved during the first wash. Soiling inorganics are practically not eliminated by solvents isoparaffins. They are however easily dissolved by a aqueous solution. The cleaning sequence is therefore an element paramount.
Selon un variante de l'invention, il est prévu un dispositif comportant des réservoirs permettant d'utiliser une ou plusieurs solutions aqueuses différentes et une installation de production d'eau désionisée en circuit fermé.According to a variant of the invention, a device is provided having reservoirs allowing the use of one or more different aqueous solutions and a production facility deionized water in a closed circuit.
Différentes solutions permettent de nettoyer des substrats métalliques variés, en fonction de leur potentiel électrochimique.Different solutions can be used to clean metal substrates varied, depending on their electrochemical potential.
Le séchage final peut être réalisé en option par une phase vapeur avec du solvant isoparaffine suivie d'un séchage sous vide, ce qui permet de protéger les pièces contre la corrosion.Final drying can optionally be carried out by a vapor phase with isoparaffin solvent followed by drying under vacuum, which protects the parts against corrosion.
A présent, on va décrire un exemple de réalisation non limitatif de l'invention en regard de la seule figure annexée.Now, we will describe a non-limiting example of embodiment of the invention with reference to the single appended figure.
La figure représente schématiquement un dispositif de dégraissage et séchage de pièces métalliques, céramiques ou polymères. The figure shows schematically a degreasing device and drying of metallic, ceramic or polymer parts.
La figure montre un réservoir 1 de solvants isoparaffiniques
primaires, un réservoir 2 de solvants isoparaffiniques secondaires,
une chambre 3 de travail de l'installation monocuve, un
distillateur 4 de solvants isoparaffiniques, un dispositif 5 de
production d'eau désionisée en circuit fermé, des réservoirs 6
de solvants lessiviels et un retentant de destillation 7. Le
solvant dans le réservoir 1 et le distillat dans le réservoir 2
est un mélange de solvants isoparaffines Cg à C11. Le dispositif
est équipé d'un système de vide, ce qui permet de maintenir une
pression inférieure à 12o mbar et d'utiliser le solvant isoparaffine
au-dessus du point-éclair et de sécher les pièces sous
vide, après un premier ou un second lavage. Il est possible
d'ajouter une phase vapeur de solvant isoparaffinique et un séchage
sous vide après un lavage lessiviel, afin de protéger les
pièces contre la corrosion.The figure shows a reservoir 1 of primary isoparaffinic solvents, a
Dans une première phase de lavage on utilise un mélange de solvants isoparaffines C9 à C11 à une température supérieure au point-éclair sous vide ou à la température d'au moins 15°C en-dessous du point-éclair, lorsque l'installation ne travaille pas sous vide. Dans une deuxième phase le dispositif utilise une solution aqueuse chauffée au-dessus de 45°C. Cette solution aqueuse est constituée d'eau désionisée et de composition adaptée aux pièces à nettoyer. Le lavage est suivi d'un rinçage effectué avec de l'eau désionisée puis d'un séchage réalisé sous vide.In a first washing phase, a mixture of isoparaffin solvents C 9 to C 11 is used at a temperature above the flash point under vacuum or at a temperature of at least 15 ° C below the flash point, when the installation does not work under vacuum. In a second phase, the device uses an aqueous solution heated above 45 ° C. This aqueous solution consists of deionized water and a composition suitable for the parts to be cleaned. Washing is followed by rinsing with deionized water and then drying carried out under vacuum.
Le dispositif selon l'invention permet d'atteindre les deux objectifs :
- éliminer les salissures polaires et non polaires dans une seule installation, et
- augmenter notablement la durée de vie des solutions aqueuses et éviter une dégradation rapide et non contrôlée de leur pouvoir détergent.
- remove polar and non-polar soiling in a single installation, and
- significantly increase the life of aqueous solutions and avoid rapid and uncontrolled degradation of their detergent power.
Claims (3)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH3082002 | 2002-02-22 | ||
| CH00308/02A CH696440A5 (en) | 2002-02-22 | 2002-02-22 | A method of degreasing, washing and drying of mechanical parts using non-halogenated hydrocarbons then detersive solvents in an installation monocuve vacuo |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1338680A1 true EP1338680A1 (en) | 2003-08-27 |
| EP1338680B1 EP1338680B1 (en) | 2007-04-18 |
Family
ID=27626699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02406032A Expired - Lifetime EP1338680B1 (en) | 2002-02-22 | 2002-11-28 | Apparatus for degreasing and drying metallic, ceramic or polymeric articles |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1338680B1 (en) |
| CH (1) | CH696440A5 (en) |
| DE (1) | DE60219591T2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2108464A1 (en) | 2008-04-09 | 2009-10-14 | Dow Global Technologies Inc. | Process for cleaning articles |
| EP2260953A1 (en) * | 2008-04-02 | 2010-12-15 | Infinity Enterprises, Inc. | Cleaning system |
| WO2022106886A1 (en) | 2020-11-17 | 2022-05-27 | Martin Ineichen | Device and method for cleaning workpieces |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5397397A (en) * | 1992-09-18 | 1995-03-14 | Crestek, Inc. | Method for cleaning and drying of metallic and nonmetallic surfaces |
| US5647143A (en) * | 1992-10-30 | 1997-07-15 | Japan Hayes Ltd. | Vacuum-degreasing cleaning method |
| CH692084A5 (en) * | 1998-03-27 | 2002-01-31 | Egaclean Sa | Device for degreasing and drying mechanical components using ultrasound and non-halogen hydrocarbon solvent comprises airtight enclosure under controlled pressure and temperature |
-
2002
- 2002-02-22 CH CH00308/02A patent/CH696440A5/en not_active IP Right Cessation
- 2002-11-28 EP EP02406032A patent/EP1338680B1/en not_active Expired - Lifetime
- 2002-11-28 DE DE60219591T patent/DE60219591T2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5397397A (en) * | 1992-09-18 | 1995-03-14 | Crestek, Inc. | Method for cleaning and drying of metallic and nonmetallic surfaces |
| US5647143A (en) * | 1992-10-30 | 1997-07-15 | Japan Hayes Ltd. | Vacuum-degreasing cleaning method |
| CH692084A5 (en) * | 1998-03-27 | 2002-01-31 | Egaclean Sa | Device for degreasing and drying mechanical components using ultrasound and non-halogen hydrocarbon solvent comprises airtight enclosure under controlled pressure and temperature |
Non-Patent Citations (1)
| Title |
|---|
| "TIEFENWIRKUNG DIE KOHLENWASSERSTOFF-TECHNOLOGIE UNTER VAKUUM VERDRAENGT PERCHLORETHYLEN", MO METALLOBERFLACHE, CARL HANSER VERLAG. MUNCHEN, DE, vol. 56, no. 6, June 2002 (2002-06-01), pages 22 - 23, XP001114869, ISSN: 0043-2792 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2260953A1 (en) * | 2008-04-02 | 2010-12-15 | Infinity Enterprises, Inc. | Cleaning system |
| EP2260953A4 (en) * | 2008-04-02 | 2012-07-04 | Infinity Entpr Inc | Cleaning system |
| EP2108464A1 (en) | 2008-04-09 | 2009-10-14 | Dow Global Technologies Inc. | Process for cleaning articles |
| US8066820B2 (en) | 2008-04-09 | 2011-11-29 | Dow Global Technologies Llc | Process for cleaning articles |
| WO2022106886A1 (en) | 2020-11-17 | 2022-05-27 | Martin Ineichen | Device and method for cleaning workpieces |
Also Published As
| Publication number | Publication date |
|---|---|
| CH696440A5 (en) | 2007-06-15 |
| DE60219591T2 (en) | 2007-12-20 |
| EP1338680B1 (en) | 2007-04-18 |
| DE60219591D1 (en) | 2007-05-31 |
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