EP 0639658 A3 19950419 - Process for degreasing and cleaning material covered with greasy and/or oily substances.
Title (en)
Process for degreasing and cleaning material covered with greasy and/or oily substances.
Title (de)
Verfahren zur schonenden Entfettung und Reinigung von mit fett- und/oder Ölhaltigen Stoffen behaftetem Gut.
Title (fr)
Procédé de dégraissage et de nettoyage d'un matériau recouvert de produits gras et/ou huileuse.
Publication
Application
Priority
- DE 4136990 A 19911111
- EP 92107605 A 19920506
Abstract (en)
[origin: EP0541892A2] The invention is characterised in that the material to be cleaned is heated under vacuum conditions in a process chamber in such a way that the greases and/or oils, depending on their physical state can be separated off from the material. Alternatively, a further variation of the cleaning process is specified, in which the material to be cleaned is placed in a vacuum chamber. In a first cleaning step, the greases and/or oils adhering to the material to be cleaned are impinged with a solvent similar to their consistency and the mixture forming of solvent and detached greases or oils is fed to an evaporator. In a second cleaning step, the steam forming at the evaporator is fed to the material, on the surface of which the steam condenses and, forming a condensate, disposes of the residual contamination. In a third cleaning step, the steam is fed to a condenser, the condensate obtained from which is in turn fed to the cleaning process as a solvent and in a fourth cleaning step, the vacuum chamber is further evacuated in such a way that residual solvent vapours are completely removed. <IMAGE>
IPC 1-7
IPC 8 full level
B08B 7/00 (2006.01); C23G 5/00 (2006.01); C23G 5/02 (2006.01); C23G 5/024 (2006.01); C23G 5/04 (2006.01)
CPC (source: EP)
B08B 7/0071 (2013.01); C23G 5/00 (2013.01); C23G 5/02 (2013.01); C23G 5/024 (2013.01)
Citation (search report)
- [Y] GB 1135181 A 19681204 - IAN FREDERICK EYLES
- [A] US 5045117 A 19910903 - WITHERELL DONALD R [US]
- [A] EP 0381887 A1 19900816 - TIYODA SEISAKUSHO KK [JP]
- [E] WO 9308933 A1 19930513 - GRAY DONALD J [US], et al & EP 0611332 A1 19940824 - GRAY DONALD J [US], et al
- [A] DE 347425 C 19220120 - FRITZ NEUMEYER A G
- [A] DE 3738006 A1 19890518 - SPECK WOLFGANG [DE]
- [A] GB 2113719 A 19830810 - ZUCCHINI GUIDO
- [Y] DATABASE WPI Week 9151, Derwent World Patents Index; AN 91-372699
- [A] DATABASE WPI Week 9124, Derwent World Patents Index; AN 91-4174963
- [A] PATENT ABSTRACTS OF JAPAN vol. 15, no. 289 (C - 852) 23 July 1991 (1991-07-23)
- [A] PATENT ABSTRACTS OF JAPAN vol. 15, no. 145 (C - 823) 12 April 1991 (1991-04-12)
- [A] DATABASE WPI Week 9122, Derwent World Patents Index; AN 91-161510
Designated contracting state (EPC)
BE CH DE FR GB IT LI SE
DOCDB simple family (publication)
EP 0541892 A2 19930519; EP 0541892 A3 19930616; DE 4136990 A1 19930513; DE 4136990 C2 20021205; DE 59208210 D1 19970417; EP 0639658 A2 19950222; EP 0639658 A3 19950419; EP 0639658 B1 19970312
DOCDB simple family (application)
EP 92107605 A 19920506; DE 4136990 A 19911111; DE 59208210 T 19920506; EP 94117579 A 19920506