CH285235A - Process for removing organic coatings from surfaces. - Google Patents
Process for removing organic coatings from surfaces.Info
- Publication number
- CH285235A CH285235A CH285235DA CH285235A CH 285235 A CH285235 A CH 285235A CH 285235D A CH285235D A CH 285235DA CH 285235 A CH285235 A CH 285235A
- Authority
- CH
- Switzerland
- Prior art keywords
- coating
- organic coatings
- removing organic
- lining
- soft
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44D—PAINTING OR ARTISTIC DRAWING, NOT OTHERWISE PROVIDED FOR; PRESERVING PAINTINGS; SURFACE TREATMENT TO OBTAIN SPECIAL ARTISTIC SURFACE EFFECTS OR FINISHES
- B44D3/00—Accessories or implements for use in connection with painting or artistic drawing, not otherwise provided for; Methods or devices for colour determination, selection, or synthesis, e.g. use of colour tables
- B44D3/16—Implements or apparatus for removing dry paint from surfaces, e.g. by scraping, by burning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B7/00—Cleaning by methods not provided for in a single other subclass or a single group in this subclass
- B08B7/0064—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by temperature changes
- B08B7/0092—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by temperature changes by cooling
Landscapes
- Application Of Or Painting With Fluid Materials (AREA)
Description
<B>Verfahren zum Entfernen von organischen Überzügen von</B> Oberflächen. Metallische Gefässe, wie Tanks usw., bedür fen für viele Verwendungszwecke einer Aus kleidung, wenn sie nicht aus einer korrosions beständigen Metallegierung hergestellt werden können. Für die Auskleidung kommen insbe sondere Gummi, bituminöse Massen, wie die Markenprodukte Mammut , Gasehell , sowie andere Stoffe in Betracht. Diese Auskleidun- gen müssen erfahrungsgemäss von Zeit zu Zeit erneuert werden.
Dabei macht die Entfernung der alten Auskleidung bedeutende Seliwieriu#- keiten, insbesondere dann, wenn es sieh uni Auskleidungen mit Stoffen auf bituminöser Basis handelt. Die restlose Entfernung der Auskleidungsmasse von der Oberfläche ist aber eine Grundvoraussetzung für die iiacii- folgende neue Auskleidung.
Besonders schwierig ist. die Entfernung, wenn die Auskleidunbsniassen weich sind, da die üblielie Behandlung der Eisenoberfläche durch Sandstrahlen zu keinem Erfolg führt, weil sich der Strahisand in der weichen Aus kleidung verfängt.
Man hat schon versucht, die Auskleidung durch Erwärmen der Oberflächen der Gefässe oder Tanks zähflüssig zu machen, erreicht mit dieser Massnahme jedoch meist das Gegen teil, da sich nämlich die weiche, fettige 1Tas,#e in den Poren des Eisens festsetzt und endgül tig nicht mehr völlig zu beseitigen ist. Das Verfahren gemäss vorliegender Erfin dung ist, dadurch gekennzeichnet, dass man die mit einem zu entfernenden Überzug versehe- nen Flächen zusammen mit dem Überzug ab kühlt und dann den Überzug entfernt.
i'berrasclienderweise wurde nämlich ge funden, dass eine restlose Entfernung, insbe sondere auch weicher bituminöser Auskleidun- gen, dann möglich ist., wenn die Gefässe oder Tanks und der Überzug stark abgekühlt wer den, da durch eine solche<B>Abkühlung</B> die Mas sen vierspröden und auch infolge der verschie- dencn Ausdehnungskoeffizienten von Ober fläche und Überzug sich durch Sandstrahlen oder durch gewöhnliches Aufschlagen mit dem Hammei- rückstandslos entfernen lassen.
Die Abkühlung kann auf verschiedene Weise erfolgen, z. B. durch Verwendung von Kohlensäureeis, Aufblasen von Kaltluft oder dergleichen.
<B> Process for removing organic coatings </B> from surfaces. Metallic vessels, such as tanks, etc., require clothing for many uses if they cannot be made from a corrosion-resistant metal alloy. For the lining, rubber, bituminous compounds such as the branded products Mammut, Gasehell and other substances come into consideration. Experience has shown that these linings have to be renewed from time to time.
The removal of the old lining makes important selections, especially when it comes to uni linings with substances on a bituminous basis. However, the complete removal of the lining compound from the surface is a basic requirement for the subsequent new lining.
Is particularly difficult. the removal, if the lining unbsniassen are soft, since the usual treatment of the iron surface by sandblasting is unsuccessful because the blasting sand gets caught in the soft lining.
Attempts have already been made to make the lining viscous by heating the surfaces of the vessels or tanks, but this measure usually achieves the opposite, as the soft, greasy pocket sticks in the pores of the iron and does not ultimately more is to be eliminated entirely. The method according to the present invention is characterized in that the surfaces provided with a coating to be removed are cooled together with the coating and then the coating is removed.
In fact, it was surprisingly found that complete removal, in particular also of soft bituminous linings, is possible when the vessels or tanks and the coating are cooled down considerably, since such a <B> cooling </ B> the masses are four-brittle and, as a result of the different expansion coefficients of the surface and coating, can be removed without residue by sandblasting or by ordinary hammers.
The cooling can be done in various ways, e.g. B. by using carbon dioxide ice, blowing cold air or the like.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH285235T | 1950-10-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH285235A true CH285235A (en) | 1952-08-31 |
Family
ID=4484871
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH285235D CH285235A (en) | 1950-10-19 | 1950-10-19 | Process for removing organic coatings from surfaces. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH285235A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0529363A1 (en) * | 1991-08-29 | 1993-03-03 | Buse Gase GmbH & Co. | Method for removing an adhered coating |
-
1950
- 1950-10-19 CH CH285235D patent/CH285235A/en unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0529363A1 (en) * | 1991-08-29 | 1993-03-03 | Buse Gase GmbH & Co. | Method for removing an adhered coating |
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