FR2802843A1 - Method for frosting glass articles involves subjecting the articles to sandblasting, followed by thermal treatment at a specified temperature - Google Patents
Method for frosting glass articles involves subjecting the articles to sandblasting, followed by thermal treatment at a specified temperature Download PDFInfo
- Publication number
- FR2802843A1 FR2802843A1 FR9916579A FR9916579A FR2802843A1 FR 2802843 A1 FR2802843 A1 FR 2802843A1 FR 9916579 A FR9916579 A FR 9916579A FR 9916579 A FR9916579 A FR 9916579A FR 2802843 A1 FR2802843 A1 FR 2802843A1
- Authority
- FR
- France
- Prior art keywords
- glass
- frosting
- temperature
- articles
- heat treatment
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C3/00—Abrasive blasting machines or devices; Plants
- B24C3/18—Abrasive blasting machines or devices; Plants essentially provided with means for moving workpieces into different working positions
- B24C3/20—Abrasive blasting machines or devices; Plants essentially provided with means for moving workpieces into different working positions the work being supported by turntables
- B24C3/22—Apparatus using nozzles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
- B24C1/06—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for producing matt surfaces, e.g. on plastic materials, on glass
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C19/00—Surface treatment of glass, not in the form of fibres or filaments, by mechanical means
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C23/00—Other surface treatment of glass not in the form of fibres or filaments
- C03C23/007—Other surface treatment of glass not in the form of fibres or filaments by thermal treatment
Abstract
Description
"Procédé de dépolissage d'articles en verre et articles en verre dépolis par ce procédé" La présente invention concerne d'une manière générale le dépolissage d'articles en verre, par exemple des flacons, tel que cela peut être demandé dans certaines industries, par exemple en parfumerie, notamment pour des raisons d'esthétique propres à de tels articles. "Process for etching glass articles and frosted glass articles by this process" The present invention relates generally to the etching of glass articles, for example bottles, as may be required in certain industries, for example in perfumery, in particular for aesthetic reasons specific to such articles.
Deux procédés sont couramment employés pour le dépolissage d'articles en verre. Two methods are commonly used for frosting glass articles.
Le premier procédé est un procédé par voie chimique, par attaque par un liquide, en général un liquide acide, tel que de l'acide chlorydrique ou de l'acide fluorhydrique, ou un mélange de ces deux acides, et pratiquement par immersion ; un tel procédé, dont un exemple est décrit dans les documents FR- A-2 477 526 ou FR-A-2 656 238, donne, aux articles ainsi traités, un très bel aspect, du genre soyeux, qui convient bien dans certaines industries ; toutefois, comme cela est aisé à comprendre, un tel procédé demande que des précautions particulières soient prises dans sa mise en oeuvre qui exige la manipulation de produits acides, dangereux. The first method is a chemical method, by attack with a liquid, in general an acidic liquid, such as hydrochloric acid or hydrofluoric acid, or a mixture of these two acids, and practically by immersion; such a process, an example of which is described in documents FR-A-2 477 526 or FR-A-2 656 238, gives the articles thus treated a very beautiful appearance, of the silky kind, which is well suited in certain industries ; however, as is easy to understand, such a process requires that special precautions be taken in its implementation which requires the handling of dangerous acidic products.
Le second procédé, dans lequel le dépolissage est obtenu par des opérations de sablage, est plus aisé et plus simple à mettre en oeuvre ; toutefois, l'aspect des articles ainsi traités ne convient pas toujours dans certaines industries, ledit aspect n'étant pas aussi soyeux que ceux obtenus par le premier procédé. The second method, in which the frosting is obtained by sandblasting operations, is easier and simpler to implement; however, the appearance of the articles thus treated is not always suitable in certain industries, said appearance not being as silky as those obtained by the first process.
La présente invention a pour but de proposer en procédé de dépolissage d'articles en verre facile à mettre en oeuvre, n'exigeant pas la manipulation de produits dangereux et donnant aux articles en verre traités par ce procédé un bel aspect esthétique comparable à celui obtenu par le premier procédé cité ci- dessus. The object of the present invention is to provide a process for frosting glass articles which is easy to implement, does not require the handling of dangerous products and which gives glass articles treated by this process a beautiful aesthetic appearance comparable to that obtained. by the first method cited above.
Selon l'invention, un procédé de dépolissage d'articles en verre consiste à soumettre, lesdits articles à une opération de sablage, laquelle opération de sablage est suivie d'un traitement thermique. According to the invention, a process for etching glass articles consists in subjecting said articles to a sandblasting operation, which sandblasting operation is followed by a heat treatment.
Avantageusement, la température du traitement thermique est comprise entre la température de ramollissement dilatométrique et le point de Littleton, ou température de ramollissement, du verre avec lequel ont été réalisés les articles en verre, ou égale à l'une ou l'autre de ces températures. Advantageously, the temperature of the heat treatment is between the dilatometric softening temperature and the Littleton point, or softening temperature, of the glass with which the glass articles were made, or equal to one or the other of these. temperatures.
Ces températures, qui portent le nom de points fixes, correspondent, comme on le sait, à des niveaux de viscosité standardisés qui revêtent dans la pratique une importance particulière, la viscosité étant une propriété capitale dans la préparation des verres et leur mise en forme. These temperatures, which are known as fixed points, correspond, as we know, to standardized viscosity levels which are of particular importance in practice, viscosity being a capital property in the preparation of glasses and their shaping.
Pour connaître ces températures, il suffit de se reporter à la fiche technique du verre employé ; sinon, on les déduit des courbes de variation de la viscosité en fonction de la température, la viscosité étant mesurée à l'aide de viscosimètres, tels que des viscosimètres à chute de bille, fondé sur l'emploi de la loi de Stokes, ou des viscosimètres à rotation, dans lesquels on mesure le moment du couple s'exerçant sur un cylindre plongeant dans le fluide, dont on desire mesurer la viscosité, contenu dans un récipient cylindrique animé d'un mouvement de rotation. To know these temperatures, simply refer to the technical sheet of the glass used; otherwise, they are deduced from the viscosity variation curves as a function of temperature, the viscosity being measured using viscometers, such as drop ball viscometers, based on the use of Stokes' law, or rotary viscometers, in which the moment of the torque exerted on a cylinder immersed in the fluid is measured, the viscosity of which is desired to be measured, contained in a cylindrical container driven by a rotary movement.
L'invention est applicable à tout type de verre. The invention is applicable to any type of glass.
Le verre peut être un verre binaire Si OZ - R20 où R est par exemple un alcalin, ou un verre binaire type silico-borate, ou un verre ternaire. The glass may be a binary glass Si OZ - R20 where R is for example an alkali, or a binary glass of the silico-borate type, or a ternary glass.
De préférence, le verre est un silico-sodo-calcique ; le verre contient 70 à 75%deSï02, 12 à16%deNa20et10à15%deCaO. Preferably, the glass is a soda-lime-silica; the glass contains 70 to 75% of Si02, 12 to 16% of Na20 and 10 to 15% of CaO.
Avantageusement, la température du traitement thermique est comprise entre 400 C et 700 C, ou égale à celles-ci ; la température du traitement thermique est voisine de 650 C. Advantageously, the temperature of the heat treatment is between 400 C and 700 C, or equal to these; the temperature of the heat treatment is close to 650 C.
En variante, le verre est un silico-boro-aluminate ; le verre est un silico- boro-aluminate de sodium ou de potassium ; le verre contient 70 à 80 % de Si02, 7à 13%deB203,2à7%d'AI203et4à8%deNa20ouK20. As a variant, the glass is a silico-boro-aluminate; the glass is a sodium or potassium silico-boro-aluminate; the glass contains 70 to 80% of Si02, 7 to 13% of B203.2 to 7% of AI203 and 4 to 8% of Na20 or K20.
Avantageusement, la température du traitement thermique est comprise entre 500 C et 900 C, ou égale à celles-ci ; la température du traitement thermique est voisine de 670 C. Advantageously, the temperature of the heat treatment is between 500 ° C. and 900 ° C., or equal to these; the temperature of the heat treatment is close to 670 C.
Avantageusement, les articles sont maintenus à la température de traitement pendant un temps inférieur à 30 minutes, de préférence de l'ordre de 15 minutes. Advantageously, the articles are kept at the treatment temperature for a time of less than 30 minutes, preferably of the order of 15 minutes.
De préférence, l'opération de sablage consiste à projeter des grains libres de carbure de silicium, noir ou vert, au travers d'au moins une buse adaptée à couvrir la surface extérieure de l'article en verre monté sur un ensemble rotatif ; les grains de carbure de silicium ont un diamètre de l'ordre de 50 à 100 microns, de préférence 53 à 90 microns. Preferably, the sandblasting operation consists in projecting free grains of silicon carbide, black or green, through at least one nozzle adapted to cover the external surface of the glass article mounted on a rotary assembly; the grains of silicon carbide have a diameter of the order of 50 to 100 microns, preferably 53 to 90 microns.
Avantageusement, l'opération de sablage est effectuée pendant un temps de l'ordre de 30 à 60 secondes. Advantageously, the sandblasting operation is carried out for a time of the order of 30 to 60 seconds.
De préférence, la projection des grains de carbure de silicium est effectuée sous une pression inférieure à 10 bars, de préférence de l'ordre de 4 à 8 bars. Preferably, the projection of the silicon carbide grains is carried out under a pressure of less than 10 bars, preferably of the order of 4 to 8 bars.
Avantageusement, la vitesse de rotation de l'ensemble rotatif est de l'ordre de 20 tours par minute. Advantageously, the speed of rotation of the rotary assembly is of the order of 20 revolutions per minute.
La présente invention a également pour objet un article en verre dépoli, notamment flacon, caractérisé par le fait qu'il a été obtenu par le procédé ci- dessus. The present invention also relates to an article in frosted glass, in particular a bottle, characterized in that it was obtained by the above process.
Des essais de dépolissage ont été effectués sur des flacons en divers verres et ont donné satisfaction ; les flacons traités avaient, après traitement, un aspect soyeux très esthétique. Frosting tests have been carried out on bottles in various glasses and have given satisfaction; the treated bottles had, after treatment, a very aesthetic silky appearance.
A titre d'exemple, on a pris des flacons en verre dont la composition était la suivante 70 à 75 % de Sï02, 12 à 16 % de Na20, 10 à15%deCaO. By way of example, glass vials were used, the composition of which was as follows: 70 to 75% of SiO 2, 12 to 16% of Na 2 O, 10 to 15% of CaO.
La température de fusion d'un tel verre est de l'ordre de 950 C. The melting temperature of such a glass is around 950 C.
On a soumis de tels flacons à une opération de sablage à l'aide de grains de carbure de silicium de 53 à 90 microns ; le sablage, sous une pression de 4 bars, a duré 60 secondes ; les flacons étaient montés sur un ensemble rotatif tournant à la vitesse de 20 tours par minute. Such bottles were subjected to a sandblasting operation using silicon carbide grains of 53 to 90 microns; the sanding, under a pressure of 4 bars, lasted 60 seconds; the bottles were mounted on a rotary assembly rotating at a speed of 20 revolutions per minute.
Les flacons ainsi sablés ont été soumis ensuite à un traitement thermique, à une température de 650 C pendant 15 minutes. The bottles thus sandblasted were then subjected to a heat treatment, at a temperature of 650 ° C. for 15 minutes.
Selon un autre exemple, les flacons étaient en verre dont la composition était la suivante 70 à 80 % de Si02, 7 à 13 % de B203, 4 à 8 % de Na20, 2 à 7 % de A1203. According to another example, the bottles were made of glass, the composition of which was as follows: 70 to 80% of Si02, 7 to 13% of B203, 4 to 8% of Na20, 2 to 7% of A1203.
La température de fusion d'un tel verre est de l'ordre de 1200 C. The melting temperature of such a glass is of the order of 1200 C.
Ici, l'opération de sablage, effectuée avec les mêmes grains et sur le même ensemble rotatif qui précédemment, a duré 30 secondes, la pression était de 8 bars et la vitesse de rotation de 20 tours/minutes. Here, the sandblasting operation, carried out with the same grains and on the same rotary assembly which previously, lasted 30 seconds, the pressure was 8 bars and the rotation speed of 20 revolutions / minutes.
Le traitement thermique a été effectué à 670 C pendant 15 minutes. The heat treatment was carried out at 670 C for 15 minutes.
En choisissant un verre tel que le précédent, dans lequel on a remplacé Na20 par K20, on a eu les mêmes résultats. By choosing a glass like the previous one, in which we replaced Na20 with K20, we got the same results.
Dans tous les cas, les flacons avaient un aspect soyeux très esthétique. Ces exemples sont donnés à titre illustratif en non limitatif. In all cases, the bottles had a very aesthetic silky appearance. These examples are given by way of non-limiting illustration.
Les paramètres des opérations peuvent être modifiés dans la limite des caractéristiques revendiquées. The parameters of the operations can be modified within the limit of the characteristics claimed.
Ainsi, l'opération de sablage peut être effectuée sous forte pression pendant un temps court, ou inversement sous faible pression pendant un temps plus long.Thus, the sandblasting operation can be carried out under high pressure for a short time, or conversely under low pressure for a longer time.
Claims (21)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9916579A FR2802843B1 (en) | 1999-12-28 | 1999-12-28 | PROCESS FOR DEFROSTING GLASS ITEMS AND GLASS ITEMS DEFROSTED BY THIS PROCESS |
ES200003106A ES2184588B1 (en) | 1999-12-28 | 2000-12-26 | GRINDING PROCEDURE OF GLASS ITEMS AND GLASS ITEMS EMERGED WITH SUCH PROCEDURE. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9916579A FR2802843B1 (en) | 1999-12-28 | 1999-12-28 | PROCESS FOR DEFROSTING GLASS ITEMS AND GLASS ITEMS DEFROSTED BY THIS PROCESS |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2802843A1 true FR2802843A1 (en) | 2001-06-29 |
FR2802843B1 FR2802843B1 (en) | 2002-03-22 |
Family
ID=9553912
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR9916579A Expired - Fee Related FR2802843B1 (en) | 1999-12-28 | 1999-12-28 | PROCESS FOR DEFROSTING GLASS ITEMS AND GLASS ITEMS DEFROSTED BY THIS PROCESS |
Country Status (2)
Country | Link |
---|---|
ES (1) | ES2184588B1 (en) |
FR (1) | FR2802843B1 (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SU852926A1 (en) * | 1979-11-27 | 1981-08-07 | Предприятие П/Я Р-6670 | Method of producing polishing composition |
JPS582243A (en) * | 1981-06-23 | 1983-01-07 | Nippon Sheet Glass Co Ltd | Surface protective treatment of glass article |
EP0811582A1 (en) * | 1996-06-04 | 1997-12-10 | Total Raffinage Distribution S.A. | Glass or glass-type article with satin appearance and its production process |
EP0837345A1 (en) * | 1996-09-30 | 1998-04-22 | Nikon Corporation | Method for manufacturing optical components for use in the ultraviolet region |
EP0945411A1 (en) * | 1998-03-20 | 1999-09-29 | Glaverbel | Glass sheet |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6020861A (en) * | 1983-07-12 | 1985-02-02 | Asahi Chem Ind Co Ltd | Carving method by sand blast |
JPH01171764A (en) * | 1987-12-28 | 1989-07-06 | Fuji Seisakusho:Kk | Frosting work to glass moulded body |
CS272689B1 (en) * | 1989-03-02 | 1991-02-12 | Josef Ing Hlavsa | Method of glass hollow products', especially lighting glass, matting |
-
1999
- 1999-12-28 FR FR9916579A patent/FR2802843B1/en not_active Expired - Fee Related
-
2000
- 2000-12-26 ES ES200003106A patent/ES2184588B1/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SU852926A1 (en) * | 1979-11-27 | 1981-08-07 | Предприятие П/Я Р-6670 | Method of producing polishing composition |
JPS582243A (en) * | 1981-06-23 | 1983-01-07 | Nippon Sheet Glass Co Ltd | Surface protective treatment of glass article |
EP0811582A1 (en) * | 1996-06-04 | 1997-12-10 | Total Raffinage Distribution S.A. | Glass or glass-type article with satin appearance and its production process |
EP0837345A1 (en) * | 1996-09-30 | 1998-04-22 | Nikon Corporation | Method for manufacturing optical components for use in the ultraviolet region |
EP0945411A1 (en) * | 1998-03-20 | 1999-09-29 | Glaverbel | Glass sheet |
Non-Patent Citations (2)
Title |
---|
DATABASE WPI Section Ch Week 198221, Derwent World Patents Index; Class G04, AN 1982-43520E, XP002148320 * |
DATABASE WPI Section Ch Week 198307, Derwent World Patents Index; Class L01, AN 1983-16098K, XP002148321 * |
Also Published As
Publication number | Publication date |
---|---|
FR2802843B1 (en) | 2002-03-22 |
ES2184588A1 (en) | 2003-04-01 |
ES2184588B1 (en) | 2004-08-16 |
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Effective date: 20170831 |