EP1578701A2 - Procede de decoration d objets en verre - Google Patents
Procede de decoration d objets en verreInfo
- Publication number
- EP1578701A2 EP1578701A2 EP03808763A EP03808763A EP1578701A2 EP 1578701 A2 EP1578701 A2 EP 1578701A2 EP 03808763 A EP03808763 A EP 03808763A EP 03808763 A EP03808763 A EP 03808763A EP 1578701 A2 EP1578701 A2 EP 1578701A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- enamel
- product
- pigments
- glass
- 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.)
- Withdrawn
Links
Classifications
-
- 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
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/001—General methods for coating; Devices therefor
- C03C17/003—General methods for coating; Devices therefor for hollow ware, e.g. containers
- C03C17/005—Coating the outside
-
- 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
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/02—Surface treatment of glass, not in the form of fibres or filaments, by coating with glass
- C03C17/04—Surface treatment of glass, not in the form of fibres or filaments, by coating with glass by fritting glass powder
Definitions
- the present invention relates to the general technical field of decorating glass objects, in particular bottles. It is known to implement bottle decoration methods in which an electrostatic spraying of enamel particles is used on a bottle.
- a method of decorating a glass object of the container or bottle type consisting of: a) spraying a glass-based product onto the glass object, by means of electrostatic spraying by dry process enamel, b) placing the object thus treated in an oven, for baking at a temperature between 600 ° C and 650 ° C, for a time between 15 and 25 minutes, c) and using a product based enamel comprising a powder of enamel particles.
- a bottle thus coated with these enamel particles undergoes a cooking operation at a temperature of the order of 640 ° C. for a period of approximately 20 minutes.
- This process makes it possible to obtain a satin or frosted effect imitating the frosted effect, which can also be obtained by chemical attack with hydrofluoric acid.
- the use of such an acid poses problems of safety in handling on the one hand and environmental pollution on the other.
- the enamel used in such a process may contain clouding mineral products such as tin dioxide or zirconium dioxide.
- the known decoration methods also have the disadvantage that they do not make it possible to obtain different colors of the treated product. To this end, an attempt has been made to mix the enamel in its mass with certain oxides such as copper oxide or cobalt oxide. An already colored enamel composition is thus obtained.
- This solution has proven to be very expensive because it requires during the preparation of the enamel product a melting furnace for each new composition, said oven having to be cleaned when the composition changes.
- this solution is more difficult to implement because the modification of the chemical composition of an enamel influences parameters such as its firing temperature or its coefficient of expansion which can be troublesome for various uses.
- a melting operation is carried out between 1000 ° C and 1400 ° C of a mixture of several mineral compounds. If pigments or dyes are added before the melting operation, the copper or cobalt contained in the corresponding oxides (dyes) will be inserted into the chemical structure of the enamel and modify its properties. It is therefore possible in particular to obtain expansion coefficients which differ substantially from those of glass. When fired at 600 to 650 ° C, enamel particles react with the glass and migrate into it. In such a scenario, embrittlement of the glass object, linked to mechanical tensile-compression stresses could appear during the cooling of said object.
- the enamel particles must be treated beforehand, so that, after the abovementioned coloring process, the enamel-based product regains its properties, in particular initial physico-chemical properties.
- Such a preparation is very inflexible, because each coloring requires a long work of development.
- a technical solution consisting for example in making a cold mixture of pigments and enamel was supposed to inevitably lead, according to the opinion of specialists, to inhomogeneities in the coloring.
- the pulverulent nature of the particles and the proportion of pigments did not allow any homogeneous distribution before spraying, and the professionals in this field correlatively did not expect color uniformity on the bottle.
- the aim of the present invention is to improve the known decoration methods which make it possible to obtain colored and / or frosted objects, while remaining easy to implement and without generating any additional cost. substantial both in terms of materials and products used and in terms of manpower and equipment required.
- the method consists in cold mixing the enamel-based product with one or more pigments, before step (a), in order to obtain a frosted and colored glass product so homogeneous.
- the enamel-based product can thus comprise an opacifying mineral product or alternatively a mixture of two enamel frits, one of which is more refractory than the other.
- Zr0 2 or S n 0 2 is used as opacifying mineral product (respectively zirconium dioxide or tin dioxide). Other metal oxides may also be suitable.
- the desired coloration according to the invention, it is mixed with the enamel product, from 0.5% to 20% by weight of one or more pigments, thus defining the initial proportion of pigments in the mixture.
- inorganic pigments having baking temperatures above 600 ° C. are used.
- pigments are used whose particle size is between 15 nm and 50 ⁇ m.
- an enamel-based product comprising a powder of enamel particles, which have a silicone coating.
- This coating makes it possible to take electrical charge of the enamel particles within the framework of the electroqtatic spraying process.
- the latter consists in cleaning the bottom of the glass object to remove the coating formed by the product based on colored enamel before the firing operation . This avoids a connection between the bottom of the glass object and its support inside an oven, during cooking.
- FIG. 1 is a schematic representation of the various stages of an example of implementation of the process according to the invention.
- the decoration method according to the invention applies very particularly to a glass object, of the container or bottle type.
- an enamel-based product is sprayed onto the glass object by means of an electrostatic spray by a dry process. Such spraying is known as such.
- the object is then placed covered with the enamel-based product in an oven for baking at a temperature between 600 and 650 ° C., for example equal to 640 ° C. This cooking is carried out for a period of between 15 and 25 minutes, for example equal to 20 minutes.
- the enamel-based product comprises an opacifying mineral product of the zirconium dioxide or tin dioxide type.
- the enamel-based product comprises a mixture of two enamel frits, one of which (A) is more refractory than the other (B).
- the enamel-based product is cold mixed with one or more pigments.
- the mixing stage is identified by the reference (c) in FIG. 1.
- Any process according to the invention more precisely consists in mixing with the enamel product from 0.5% to 20% by weight of one or more pigments. This range thus defines the initial proportion of the pigment (s) in the mixture obtained.
- the particle size of these pigments is between 15 nm and 50 ⁇ m. These pigments are inorganic and have cooking temperatures generally above 600 ° C.
- the homogeneity of the powder mixture of the enamel-based product and the pigments is obtained for example by rotation in a barrel at temperature room for about one to two hours. This duration depends on the amount of mixture.
- the enamel-based product is for example marketed by the FERRO company under the name VNR 9404®.
- the enamel particles advantageously have a silicone coating.
- the enamel-based product not deposited on the glass object is also recycled, recovering it and readjusting the proportion of pigment to restore the initial proportion in the mixture (0 , 5 to 20% by weight) and this before any new projection by dry electrostatic route. This is explained by the fact that a smaller quantity of powder is deposited on the bottle when the enamel-based product is mixed with pigments. It is thus necessary to use in the context of this process additional spray guns.
- a frit of enamel particles sold by the company FERRO under the name VNR 9404® is mixed with pigments sold by the company KE IRA PIGMENTS OY under the name UV reference Titan L530®.
- the mixture used preferably comprises 98% of this frit of enamel particles and 2% of this dye.
- the mixture thus obtained is sprayed onto a transparent white glass bottle by the spraying process dry electrostatic, with GEMA® guns at a voltage of 100 KV.
- the spraying step is identified by the reference (a).
- the weight of enamel-based product deposited on the bottle must be between 3.5 and 8 grams and preferably equal to 4 grams. This mass of 4 g corresponds to a 70 cl bottle, with a height of 240 mm. For a 1 liter bottle, this preferred mass increases to 6 grams.
- the bottle is then subjected to cooking at 650 ° C. for a period of approximately 25 minutes.
- the cooking stage is marked with the reference (b).
- a bottle of white color is obtained, the surface layer of which has an arrhythmic roughness of between 1, 8 and 3 ⁇ m. This roughness is measured using a Pertomether M4P1® device from the company MAHR.
- the decoration method according to the invention has the advantage and against all odds of providing a large variety of colors combined with a frosted effect. Said colorings also exhibit very high homogeneity, with an optimal roughness obtained.
- the coating consisting of the product based on colored enamel on the bottom of said object is removed and this before step (b) corresponding to cooking.
- step (b) corresponding to cooking.
- This avoids any hooking or connection between the glass object and its support in the oven during the cooking operation. Such a connection could be established by reaction between said support and the enamel, during firing if said coating was not removed.
- the product based on colored enamel, removed from the bottom of the object is then recycled with the product not deposited on the glass object. There is therefore almost no loss of enamel-based product and no long and difficult treatment to perform in the context of the recycling of the non-deposited product.
- the glass object having undergone this electrostatic spraying operation is then brought into an oven where it undergoes baking at a temperature between 600 and 650 ° C. for a period e 15 to
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Surface Treatment Of Glass (AREA)
- Glass Compositions (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0212943A FR2845984B1 (fr) | 2002-10-17 | 2002-10-17 | Procede de decoration d'objets en verre |
FR0212943 | 2002-10-17 | ||
PCT/FR2003/003088 WO2004035498A2 (fr) | 2002-10-17 | 2003-10-17 | Procede de decoration d'objets en verre |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1578701A2 true EP1578701A2 (fr) | 2005-09-28 |
Family
ID=32050486
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03808763A Withdrawn EP1578701A2 (fr) | 2002-10-17 | 2003-10-17 | Procede de decoration d objets en verre |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1578701A2 (fr) |
AU (1) | AU2003301278A1 (fr) |
FR (1) | FR2845984B1 (fr) |
PL (1) | PL376678A1 (fr) |
RU (1) | RU2005114909A (fr) |
WO (1) | WO2004035498A2 (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2687492A4 (fr) * | 2011-03-15 | 2015-03-18 | Dening Yang | Glace pourvue d'une couche de glaçure colorée et procédé de fabrication associé |
US9487439B2 (en) | 2012-04-24 | 2016-11-08 | Ferro Corporation | Heavy-metal-free, ion exchangeable glass enamels |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3437504A (en) * | 1964-04-27 | 1969-04-08 | Maxine L Morgan | Electrostatic method for decorating glass and vitreous enamels for use therein |
US4075363A (en) * | 1973-07-12 | 1978-02-21 | Anchor Hocking Corporation | Method of making color decorated, plastic coated glass articles |
EP0849235B1 (fr) * | 1996-12-20 | 2000-04-19 | Saga Decor | Procédé pour la réalisation d'un volume en verre destiné à contenir un liquide |
ATE199370T1 (de) * | 1997-11-17 | 2001-03-15 | Saga Decor | Verfahren zur herstellung von dekors auf glasgegenständen für verpackung |
-
2002
- 2002-10-17 FR FR0212943A patent/FR2845984B1/fr not_active Expired - Fee Related
-
2003
- 2003-10-17 AU AU2003301278A patent/AU2003301278A1/en not_active Abandoned
- 2003-10-17 RU RU2005114909/03A patent/RU2005114909A/ru not_active Application Discontinuation
- 2003-10-17 EP EP03808763A patent/EP1578701A2/fr not_active Withdrawn
- 2003-10-17 WO PCT/FR2003/003088 patent/WO2004035498A2/fr not_active Application Discontinuation
- 2003-10-17 PL PL376678A patent/PL376678A1/pl not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO2004035498A3 * |
Also Published As
Publication number | Publication date |
---|---|
AU2003301278A1 (en) | 2004-05-04 |
FR2845984A1 (fr) | 2004-04-23 |
PL376678A1 (pl) | 2006-01-09 |
AU2003301278A8 (en) | 2004-05-04 |
RU2005114909A (ru) | 2006-01-20 |
FR2845984B1 (fr) | 2005-01-07 |
WO2004035498A2 (fr) | 2004-04-29 |
WO2004035498A3 (fr) | 2004-05-27 |
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Legal Events
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Designated state(s): FR SE |
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RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: LECLERC, AGNES Inventor name: HERMEL, MAX Inventor name: LIGI, SYLVAIN |
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Effective date: 20090209 |
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Effective date: 20131126 |