EP0374291A1 - Method of cleaning surfaces, especially delicate surfaces - Google Patents
Method of cleaning surfaces, especially delicate surfaces Download PDFInfo
- Publication number
- EP0374291A1 EP0374291A1 EP88121432A EP88121432A EP0374291A1 EP 0374291 A1 EP0374291 A1 EP 0374291A1 EP 88121432 A EP88121432 A EP 88121432A EP 88121432 A EP88121432 A EP 88121432A EP 0374291 A1 EP0374291 A1 EP 0374291A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- mineral
- blasting material
- cleaning
- jet
- water
- 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
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000004140 cleaning Methods 0.000 title claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 24
- 238000005422 blasting Methods 0.000 claims abstract description 21
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 14
- 239000011707 mineral Substances 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 8
- 235000019738 Limestone Nutrition 0.000 claims description 3
- 239000010459 dolomite Substances 0.000 claims description 3
- 229910000514 dolomite Inorganic materials 0.000 claims description 3
- 239000006028 limestone Substances 0.000 claims description 3
- 150000004649 carbonic acid derivatives Chemical class 0.000 claims description 2
- 235000010755 mineral Nutrition 0.000 claims 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L calcium carbonate Substances [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims 2
- 235000010216 calcium carbonate Nutrition 0.000 claims 1
- 239000000126 substance Substances 0.000 abstract description 6
- 239000000203 mixture Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000006378 damage Effects 0.000 description 2
- 238000010422 painting Methods 0.000 description 2
- 239000010453 quartz Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 229910021532 Calcite Inorganic materials 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 239000010431 corundum Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 150000003377 silicon compounds Chemical class 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C11/00—Selection of abrasive materials or additives for abrasive blasts
Definitions
- the invention relates to a method for cleaning surfaces, in particular sensitive surfaces that are contaminated by environmental influences.
- the process described here is a further development of the cleaning process for surfaces in accordance with European Patent No. 0 171 448.
- blasting material a substance suitable as blasting material
- sharp-edged blasting material such as sand (a silicon compound), quartz, corundum or fly ash.
- the object of the invention is to overcome the shortcomings of the known method that occur in the cleaning of highly sensitive surfaces, and thus also to enable the cleaning of very sensitive objects.
- blasting material with low hardness has the advantage that, when blasting sensitive surfaces, they greatly enhance the cleaning effect of the water / gas jet, but because of their minimum hardness, which is generally lower than the hardness of the materials to be cleaned , clean them properly, but do not destroy them.
- the kinematics of the collision processes taking place during cleaning play a decisive role. Due to its mass, the mineral blasting material is capable of absorbing kinetic energy and releasing it on impact on the surface to be cleaned, and thus of detaching layers that are not integrally connected to the surface, namely impurities. However, before the object to be cleaned can be removed itself, the mineral particles will release their inert kinetic energy by bursting and / or being thrown back by the surface to be cleaned.
- Dolomite which has a double carbonate as a rock-forming mineral, is preferably used as a suitable shot.
- the hardness of this material is 3.5.
- Other materials based on simple carbonates are also used for this process. These are e.g. B. limestone, but also lime itself.
- this method is not restricted to the mineral blasting materials mentioned above, but rather can be combined with all substances with a hardness of four or less.
- the grain size of the blasting material used should not exceed 1 mm in diameter. Diameters between 0.01 and 0.8 mm can guarantee an optimal cleaning result depending on the nature of the surface to be cleaned. The cleaning process using mineral blasting material in dust form is particularly uncritical. Diameters from 0.01 to 0.05 mm are preferred.
- the device shown in the figure which is generally referred to as "mixing head 10" and for carrying out the invention Suitable for the method has two pipe sockets with central axes 12, 14 on the feed side, through which the jet components are introduced into the mixing head 10.
- a pressurized water / air mixture is fed on the axis 12 to the mixing area 16 of the mixing head 10 and a blasting material / air mixture under pressure on the axis 14.
- the ratio of the two pressures to one another differs from application to application.
- the two pipe sockets can be supplied by their own, but also by a common pressure source via adjustable pressure sources.
- the two jet parts mix to form an overall jet which, as described in EU-PS 0 171 448, has a rotational movement.
- the total jet then emerges through the nozzle area 18 of the mixing head 10 along the axis 20 and strikes the surface 22 of an object to be cleaned.
- mineral blasting materials with a Mohs hardness of less than or equal to four are introduced into the mixing head 10 along the axis 14, even paintings can be cleaned extremely gently.
- highly sensitive surfaces 22 can mineral substances such as dolomite, calcite, limestone are used.
- the particle size should not exceed 1 mm in diameter. With diameter sizes from 0.01 to 0.8 mm, almost all surfaces and especially sensitive surfaces can be cleaned.
- the method according to the invention can also be carried out with substances of another type which have a Mohs hardness of less than or equal to four.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cleaning By Liquid Or Steam (AREA)
- Detergent Compositions (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zum Reinigen von Oberflächen, insbesondere von empfindlichen Oberflächen, die durch Umwelteinflüsse kontaminiert sind. Das hier beschriebene Verfahren ist eine Weiterentwicklung des Reinigungsverfahrens für Oberflächen nach dem Europäischen Patent Nr. 0 171 448.The invention relates to a method for cleaning surfaces, in particular sensitive surfaces that are contaminated by environmental influences. The process described here is a further development of the cleaning process for surfaces in accordance with European Patent No. 0 171 448.
In dieser Patentschrift werden mehrere als Strahlgut geeignete Substanzen erwähnt, nämlich insbesondere scharfkantiges Strahlgut wie Sand (eine Siliziumverbindung), Quarz, Korund oder Flugasche. Diese Strahlgüter werden in einem Mischkopf mit einem Luft/Wasser-Strahl vereinigt, der eine zusätzliche Eigenrotation aufweist. Der aus dem Mischkopf austretende Gesamtstrahl wird auf die zu reinigende Oberfläche gelenkt.In this patent, several substances suitable as blasting material are mentioned, namely in particular sharp-edged blasting material such as sand (a silicon compound), quartz, corundum or fly ash. These blasting materials are combined in a mixing head with an air / water jet that has an additional self-rotation. The total jet emerging from the mixing head is directed onto the surface to be cleaned.
Insbesondere bei hochempfindlichen Oberflächen führen allerdings die oben genannten scharfkantigen Strahlgüter in den zur Reinigung der Oberflächen angewendeten Wasser/Luft-Strahlen zu einem physikalischen Abtragen von Oberflächenschichten und damit zu einer Zerstörung empfindlicher Oberflächen.Particularly in the case of highly sensitive surfaces, however, the abovementioned sharp-edged blasting materials in the water / air jets used for cleaning the surfaces lead to a physical removal of surface layers and thus to the destruction of sensitive surfaces.
Die Aufgabe der Erfindung ist es, die Mängel des bekannten Verfahrens, die bei der Reinigung von hochempfindlichen Oberflächen auftreten, auszuräumen und damit auch die Reinigung sehr empfindlicher Objekte zu ermöglichen.The object of the invention is to overcome the shortcomings of the known method that occur in the cleaning of highly sensitive surfaces, and thus also to enable the cleaning of very sensitive objects.
Diese Aufgabe wird erfindungsgemäß durch das im kennzeichnenden Teil des Anspruchs 1 angegebene Merkmal erreicht.This object is achieved by the feature specified in the characterizing part of claim 1.
Zweckmäßige Ausführungsformen werden durch die Merkmale der Unteransprüche definiert.Expedient embodiments are defined by the features of the subclaims.
Der Einsatz von Strahlgutmaterialien mit geringer Härte hat den Vorteil, daß diese bei der Strahlreinigung von empfindlichen Oberflächen zwar den Reinigungseffekt des Wasser/Gas-Strahles sehr verstärken, aber aufgrund ihrer minimalen Härte, welche in der Regel geringer ist als die Härte der zu reinigenden Materialien, diese zwar einwandfrei reinigen, aber nicht zerstören. Dabei spielt die Kinematik der bei der Reinigung ablaufenden Stoßprozesse eine entscheidende Rolle. Das mineralische Strahlgut ist aufgrund seiner Masse in der Lage, Bewegungsenergie aufzunehmen und bei dem Aufprall auf die zu reinigende Oberfläche freizusetzen und damit nicht einstückig mit der Oberfläche verbundene Schichten, nämlich Verunreinigungen, abzusprengen. Bevor allerdings ein Abtragen an dem zu reinigenden Objekt selbst zustande kommen kann, werden die mineralischen Partikel ihre inerte Bewegungsenergie freisetzen, indem sie zerbersten und/oder von der zu reinigenden Oberfläche zurückgeworfen werden.The use of blasting material with low hardness has the advantage that, when blasting sensitive surfaces, they greatly enhance the cleaning effect of the water / gas jet, but because of their minimum hardness, which is generally lower than the hardness of the materials to be cleaned , clean them properly, but do not destroy them. The kinematics of the collision processes taking place during cleaning play a decisive role. Due to its mass, the mineral blasting material is capable of absorbing kinetic energy and releasing it on impact on the surface to be cleaned, and thus of detaching layers that are not integrally connected to the surface, namely impurities. However, before the object to be cleaned can be removed itself, the mineral particles will release their inert kinetic energy by bursting and / or being thrown back by the surface to be cleaned.
Als geeignetes Strahlgut wird bevorzugt Dolomit verwendet, der als gesteinsbildendes Mineral ein Doppelkarbonat aufweist. Die Härte dieses Materials liegt bei 3,5. Auch andere Materialien auf der Basis von einfachen Karbonaten kommen für dieses Verfahren zur Anwendung. Dieses sind z. B. Kalkstein, aber auch Kalk selbst.Dolomite, which has a double carbonate as a rock-forming mineral, is preferably used as a suitable shot. The hardness of this material is 3.5. Other materials based on simple carbonates are also used for this process. These are e.g. B. limestone, but also lime itself.
Natürlich ist dieses Verfahren nicht auf die vorstehenden mineralischen Strahlgüter beschränkt, sondern läßt sich vielmehr mit allen Substanzen ausführen, deren Härte maximal vier ist.Of course, this method is not restricted to the mineral blasting materials mentioned above, but rather can be combined with all substances with a hardness of four or less.
Die Körnung des eingesetzten Strahlgutes sollte 1 mm Durchmesser nicht übersteigen. Durchmesser zwischen 0,01 und 0,8 mm Durchmesser können abhängig von der Beschaffenheit der zu reinigenden Oberfläche ein optimales Reinigungsergebnis garantieren. Besonders unkritisch ist das Reinigungsverfahren unter Einsatz von mineralischem Strahlgut in Staubform. Dabei kommen Durchmesser von 0,01 bis 0,05 mm bevorzugt in Betracht.The grain size of the blasting material used should not exceed 1 mm in diameter. Diameters between 0.01 and 0.8 mm can guarantee an optimal cleaning result depending on the nature of the surface to be cleaned. The cleaning process using mineral blasting material in dust form is particularly uncritical. Diameters from 0.01 to 0.05 mm are preferred.
Mit den zuvor genannten Materialien bzw. Parametern lassen sich alle empfindlichen Materialoberflächen reinigen. Nicht nur Glas, Beton, Metall, Stein oder Holzoberflächen, sondern sogar Fresken und selbst Wandgemälde und Gemälde können in der Regel ohne sichtbare Oberflächenschäden gesäubert werden.All sensitive material surfaces can be cleaned with the aforementioned materials and parameters. Not only glass, concrete, metal, stone or wooden surfaces, but even frescoes and even murals and paintings can usually be cleaned without visible surface damage.
Der Gegenstand der Erfindung wird anhand der beigefügten, schematischen Zeichnung näher erläutert, deren einzige Figur im Schnitt eine Vorrichtung zur Ausführung des erfindungsgemäßen Verfahrens zeigt.The object of the invention is explained in more detail with reference to the attached schematic drawing, the only figure of which shows in section a device for carrying out the method according to the invention.
Die aus der Figur ersichtliche Vorrichtung, die allgemein als "Mischkopf 10" bezeichnet wird und zur Ausführung des erfindungsgemäßen Verfahrens geeignet ist, hat an der Zuführseite zwei Rohrstutzen mit Mittelachsen 12, 14, durch welche die Strahlbestandteile in den Mischkopf 10 eingeleitet werden. Auf der Achse 12 wird dem Mischbereich 16 des Mischkopfes 10 ein unter Druck stehendes Wasser/Luft-Gemisch und auf der Achse 14 ein Strahlgut/Luft-Gemisch unter Druck zugeführt. Das Verhältnis der beiden Drücke zueinander ist von Anwendungsfall zu Anwendungsfall verschieden. Die beiden Rohrstutzen können durch jeweils eigene, aber auch durch eine gemeinsame Druckquelle über einstellbare Druckquellen versorgt werden.The device shown in the figure, which is generally referred to as "mixing
Im Mischbereich 16 vermischen sich die beiden Strahlteile zu einem Gesamtstrahl, der wie in der EU-PS 0 171 448 beschrieben wird, eine Rotationsbewegung hat. Der Gesamtstrahl tritt dann durch den Düsenbereich 18 des Mischkopfes 10 entlang der Achse 20 aus und trifft auf die Oberfläche 22 eines zu reinigenden Objektes auf.In the
Werden entlang der Achse 14 in den Mischbereich 16 herkömmliche Strahlgüter, wie z. B. Quarzmehl zugeführt, so können empfindliche Oberflächen 22 geschädigt werden.Are along the
Werden dagegen in den Mischkopf 10 entlang der Achse 14 mineralische Strahlgüter mit einer Mohshärte von kleiner oder gleich vier eingeführt, so lassen sich selbst Gemälde äußerst schonend reinigen. Für die Reinigung solcher hochempfindlicher Oberflächen 22 können mineralische Substanzen wie Dolomite, Calcite, Kalkstein eingesetzt werden. Dabei sollte die Partikelgröße 1 mm Durchmesser nicht übersteigen. Mit Durchmessergrößen von 0,01 bis 0,8 mm lassen sich nahezu alle Oberflächen und insbesondere empfindliche Oberflächen reinigen.If, on the other hand, mineral blasting materials with a Mohs hardness of less than or equal to four are introduced into the
Vollkommen bedenkenfreie Reinigung ist mit Partikeldurchmessern von 0,01 bis 0,05 mm Durchmesser möglich.Completely worry-free cleaning is possible with particle diameters from 0.01 to 0.05 mm.
Natürlich läßt sich das erfindungsgemäße Verfahren auch mit Substanzen anderer Art ausführen, die eine Mohshärte von kleiner oder gleich vier haben.Of course, the method according to the invention can also be carried out with substances of another type which have a Mohs hardness of less than or equal to four.
Claims (6)
dadurch gekennzeichnet, daß ein mineralisches Strahlgut mit einer Härte (Mohshärte) von maximal vier verwendet wird.1. A method for cleaning surfaces, in particular sensitive surfaces contaminated and attacked by atmospheric influences, by means of a jet of fine-grained, mineral blasting material and water, the jet containing a high proportion of air which is a multiple of the volume of water in volume,
characterized in that a mineral blasting material with a hardness (Mohs hardness) of maximum four is used.
ein mineralisches Strahlgut auf der Basis von Calziumcarbonaten (Kalkstein) verwendet wird.3. The method according to any one of claims 1 or 2, characterized in that
a mineral abrasive based on calcium carbonates (limestone) is used.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT88121432T ATE94447T1 (en) | 1988-12-21 | 1988-12-21 | PROCEDURE FOR CLEANING SURFACES, ESPECIALLY DELICATE SURFACES. |
| EP88121432A EP0374291B1 (en) | 1988-12-21 | 1988-12-21 | Method of cleaning surfaces, especially delicate surfaces |
| DE88121432T DE3884207D1 (en) | 1988-12-21 | 1988-12-21 | Process for cleaning surfaces, especially sensitive surfaces. |
| ES88121432T ES2043776T3 (en) | 1988-12-21 | 1988-12-21 | PROCEDURE FOR THE CLEANING OF SURFACES, IN PARTICULAR OF FLAT SURFACES. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP88121432A EP0374291B1 (en) | 1988-12-21 | 1988-12-21 | Method of cleaning surfaces, especially delicate surfaces |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0374291A1 true EP0374291A1 (en) | 1990-06-27 |
| EP0374291B1 EP0374291B1 (en) | 1993-09-15 |
Family
ID=8199702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP88121432A Expired - Lifetime EP0374291B1 (en) | 1988-12-21 | 1988-12-21 | Method of cleaning surfaces, especially delicate surfaces |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0374291B1 (en) |
| AT (1) | ATE94447T1 (en) |
| DE (1) | DE3884207D1 (en) |
| ES (1) | ES2043776T3 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4112890A1 (en) * | 1991-04-19 | 1992-10-22 | Abony Szuecs Eva | METHOD AND DEVICE FOR CLEANING SURFACES, ESPECIALLY SENSITIVE SURFACES |
| WO1994007658A1 (en) * | 1992-09-25 | 1994-04-14 | Norsk Hydro A.S. | Blasting agent and a process for removing coatings |
| US5318636A (en) * | 1991-04-19 | 1994-06-07 | Eva Abony Szucs | Method for cleaning surfaces, in particular sensitive surfaces |
| GB2325000A (en) * | 1997-05-09 | 1998-11-11 | Stephen William Rudman | Blast cleaning using calcium carbonate |
| WO2018100270A1 (en) * | 2016-12-01 | 2018-06-07 | Sa Gerard Pariche | Process and facility for frosting a glass container |
| WO2020049033A1 (en) * | 2018-09-05 | 2020-03-12 | LUTZ, Margot | Method for treating surfaces |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL96067C (en) * | 1900-01-01 | |||
| NL91624C (en) * | 1900-01-01 | |||
| US3313067A (en) * | 1964-10-20 | 1967-04-11 | Gen Electric | Process for deflashing articles |
| GB1526866A (en) * | 1977-05-30 | 1978-10-04 | Lankro Chem Ltd | Cleaning compositions |
| EP0171448A1 (en) * | 1984-08-14 | 1986-02-19 | Johann Szücs | Device and method for cleaning of stone and metal surfaces |
| EP0258707A2 (en) * | 1986-09-03 | 1988-03-09 | Kao Corporation | Liquid cleanser composition |
| US4731125A (en) * | 1984-04-19 | 1988-03-15 | Carr Lawrence S | Media blast paint removal system |
| US4751016A (en) * | 1985-02-26 | 1988-06-14 | The Clorox Company | Liquid aqueous abrasive cleanser |
-
1988
- 1988-12-21 AT AT88121432T patent/ATE94447T1/en not_active IP Right Cessation
- 1988-12-21 DE DE88121432T patent/DE3884207D1/en not_active Expired - Fee Related
- 1988-12-21 ES ES88121432T patent/ES2043776T3/en not_active Expired - Lifetime
- 1988-12-21 EP EP88121432A patent/EP0374291B1/en not_active Expired - Lifetime
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL96067C (en) * | 1900-01-01 | |||
| NL91624C (en) * | 1900-01-01 | |||
| US3313067A (en) * | 1964-10-20 | 1967-04-11 | Gen Electric | Process for deflashing articles |
| GB1526866A (en) * | 1977-05-30 | 1978-10-04 | Lankro Chem Ltd | Cleaning compositions |
| US4731125A (en) * | 1984-04-19 | 1988-03-15 | Carr Lawrence S | Media blast paint removal system |
| EP0171448A1 (en) * | 1984-08-14 | 1986-02-19 | Johann Szücs | Device and method for cleaning of stone and metal surfaces |
| US4751016A (en) * | 1985-02-26 | 1988-06-14 | The Clorox Company | Liquid aqueous abrasive cleanser |
| EP0258707A2 (en) * | 1986-09-03 | 1988-03-09 | Kao Corporation | Liquid cleanser composition |
Non-Patent Citations (2)
| Title |
|---|
| JAPANESE PATENT GAZETTE, Sektion C, Woche 8640, Nr. 86-262078/40, Derwent Publications Ltd, London, GB; & JP-A-61 190 599 (ISHIHARA YAKUHIN) 25.08.1986 * |
| PATENT ABSTRACTS OF JAPAN, Band 10, Nr. 199 (C-359)[2255], 11. Juli 1986; & JP-A-61 40 329 (NISHIMURA SANGYO K.K.) 26.02.1986 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4112890A1 (en) * | 1991-04-19 | 1992-10-22 | Abony Szuecs Eva | METHOD AND DEVICE FOR CLEANING SURFACES, ESPECIALLY SENSITIVE SURFACES |
| US5318636A (en) * | 1991-04-19 | 1994-06-07 | Eva Abony Szucs | Method for cleaning surfaces, in particular sensitive surfaces |
| WO1994007658A1 (en) * | 1992-09-25 | 1994-04-14 | Norsk Hydro A.S. | Blasting agent and a process for removing coatings |
| GB2325000A (en) * | 1997-05-09 | 1998-11-11 | Stephen William Rudman | Blast cleaning using calcium carbonate |
| GB2325000B (en) * | 1997-05-09 | 2000-12-06 | Stephen William Rudman | Blast cleaning |
| WO2018100270A1 (en) * | 2016-12-01 | 2018-06-07 | Sa Gerard Pariche | Process and facility for frosting a glass container |
| FR3059580A1 (en) * | 2016-12-01 | 2018-06-08 | Sa Gerard Pariche | METHOD AND INSTALLATION FOR DEPOLISHING GLASS CONTAINER |
| WO2020049033A1 (en) * | 2018-09-05 | 2020-03-12 | LUTZ, Margot | Method for treating surfaces |
Also Published As
| Publication number | Publication date |
|---|---|
| ATE94447T1 (en) | 1993-10-15 |
| ES2043776T3 (en) | 1994-01-01 |
| EP0374291B1 (en) | 1993-09-15 |
| DE3884207D1 (en) | 1993-10-21 |
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