EP3519203A1 - Method for the production of painted or lacquered glass - Google Patents

Method for the production of painted or lacquered glass

Info

Publication number
EP3519203A1
EP3519203A1 EP17787484.9A EP17787484A EP3519203A1 EP 3519203 A1 EP3519203 A1 EP 3519203A1 EP 17787484 A EP17787484 A EP 17787484A EP 3519203 A1 EP3519203 A1 EP 3519203A1
Authority
EP
European Patent Office
Prior art keywords
organic binder
liquid composition
magnetic field
creating
layer
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Withdrawn
Application number
EP17787484.9A
Other languages
German (de)
French (fr)
Inventor
Fabio FOTI
Guillaume LEQUIPPE
Laurence SIGOGNAULT
Edouard JONVILLE
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Saint Gobain Glass France SAS
Original Assignee
Saint Gobain Glass France SAS
Compagnie de Saint Gobain SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Saint Gobain Glass France SAS, Compagnie de Saint Gobain SA filed Critical Saint Gobain Glass France SAS
Publication of EP3519203A1 publication Critical patent/EP3519203A1/en
Withdrawn legal-status Critical Current

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
    • C03C17/006—Surface treatment of glass, not in the form of fibres or filaments, by coating with materials of composite character
    • C03C17/008—Surface treatment of glass, not in the form of fibres or filaments, by coating with materials of composite character comprising a mixture of materials covered by two or more of the groups C03C17/02, C03C17/06, C03C17/22 and C03C17/28
    • C03C17/009—Mixtures of organic and inorganic materials, e.g. ormosils and ormocers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C5/00—Processes for producing special ornamental bodies
    • B44C5/04—Ornamental plaques, e.g. decorative panels, decorative veneers
    • B44C5/0407—Ornamental plaques, e.g. decorative panels, decorative veneers containing glass elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/20—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by magnetic fields
    • B05D3/207—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by magnetic fields post-treatment by magnetic fields
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • B05D5/06—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain multicolour or other optical effects
    • B05D5/065—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain multicolour or other optical effects having colour interferences or colour shifts or opalescent looking, flip-flop, two tones
    • 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
    • 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
    • C03C17/006—Surface treatment of glass, not in the form of fibres or filaments, by coating with materials of composite character
    • C03C17/007—Surface treatment of glass, not in the form of fibres or filaments, by coating with materials of composite character containing a dispersed phase, e.g. particles, fibres or flakes, in a continuous phase
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/23—Magnetisable or magnetic paints or lacquers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2203/00—Other substrates
    • B05D2203/30—Other inorganic substrates, e.g. ceramics, silicon
    • B05D2203/35—Glass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
    • B44C1/005—Processes, not specifically provided for elsewhere, for producing decorative surface effects by altering locally the surface material
    • 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
    • C03C2217/00—Coatings on glass
    • C03C2217/40—Coatings comprising at least one inhomogeneous layer
    • C03C2217/43—Coatings comprising at least one inhomogeneous layer consisting of a dispersed phase in a continuous phase
    • C03C2217/44—Coatings comprising at least one inhomogeneous layer consisting of a dispersed phase in a continuous phase characterized by the composition of the continuous phase
    • C03C2217/445—Organic continuous phases
    • 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
    • C03C2217/00—Coatings on glass
    • C03C2217/40—Coatings comprising at least one inhomogeneous layer
    • C03C2217/43—Coatings comprising at least one inhomogeneous layer consisting of a dispersed phase in a continuous phase
    • C03C2217/46—Coatings comprising at least one inhomogeneous layer consisting of a dispersed phase in a continuous phase characterized by the dispersed phase
    • C03C2217/48—Coatings comprising at least one inhomogeneous layer consisting of a dispersed phase in a continuous phase characterized by the dispersed phase having a specific function

Definitions

  • the present invention relates to a method for manufacturing painted or lacquered glass comprising a step of creating visible patterns in the paint or lacquer layer by orientation and / or displacement of magnetizable particles by means of a magnetic field.
  • the exposure of the magnetizable particles contained in the liquid composition to the magnetic field lines causes a change in the organization of the particles and the creation of visible patterns by concentration or selective orientation of the particles.
  • the permanent magnets or electromagnets are integrated in the surface of at least one of the rollers of the conveyor carrying the glass sheet.
  • the tangential velocity of the magnets is always equal to the conveying speed of the glass sheet, the identity of these two speeds guarantee a regular spacing of the patterns or images created.
  • the known method does not allow to easily create large patterns: the size of the patterns in the direction of travel of the glass sheet is indeed limited to the circumference of the conveyor roller in which the magnets are incorporated.
  • the purpose of the present invention is to propose a method similar to that described in applications WO2014 / 009306 and WO2015 / 071 125, but which makes it possible to create large patterns without the need to increase the size of one or several of the conveyor rollers.
  • the method of the present invention operates with an endless, magnetic and magnetizer belt mounted on at least two conveyor rollers.
  • the size of the carpet in the direction of travel of the glass sheet is larger than the circumference of each of the conveyor rolls and determines the maximum dimension of the magnetic patterns that can be created.
  • the use of an endless belt does not imply any increase in the size of the conveyor, compared to a similar conveyor without carpet.
  • the subject of the present invention is therefore a process for manufacturing lacquered glass comprising
  • the method being characterized in that the device for creating a magnetic field 9 is an endless belt 6 mounted on at least two rollers 2 of the conveyor, of which at least one is driven by a motor, the endless belt 6 being provided on its surface with one or more magnetic elements 7.
  • the method of the present invention further has the advantage of giving, for a given scrolling speed, a better resolution than the method of the state of the art. Each point of the glass sheet remains in contact with the magnetic element or elements fixed on the carpet for a longer duration than if these same elements were fixed on a conveyor roll,
  • the increase in the duration of contact of the magnetic element (s) with the glass substrate may also make it possible, for a given quality of resolution, to make the process operate at a higher rate or speed of scrolling.
  • the dimensions of the endless carpet magnetizer can be chosen freely according to the number and the size of the patterns and images that one wishes to create: the larger the size of the patterns or images, the greater the width and the length of the carpet must be large.
  • the dimensions of the endless carpet can be chosen between wide limits: its length in the direction of travel of the glass sheet is for example between 50 cm and 10 m, preferably between 80 cm and 5 m, in particular between 1 , 5 m and 4 m.
  • the width of the carpet, in the direction perpendicular to the direction of travel of the glass sheet is advantageously between 40 cm and 4 m, preferably between 80 cm and 3.5 m and in particular between 1.0 m and 3 m, 0.
  • the magnetic elements, or magnets are preferably permanent magnets, easier to implement than electromagnets.
  • Examples of magnetic materials that may be used for the process according to the invention include steels, ferrites, alloys composed mainly of aluminum (Al), nickel (Ni) and cobalt (Co) (Alnico), samarium and cobalt based alloys and neodymium, iron and boron alloys.
  • the magnetic elements may protrude from the surface of the endless carpet, they may be flush with the surface of the carpet, or they may be slightly recessed from the carpet surface. In all three cases, it may be interesting to cover the surface and the magnetic elements with a thin plastic film in order to protect them, to better hold them in place or to facilitate their cleaning.
  • the endless belt is made of a flexible tensile material, preferably an organic polymer sheet.
  • the deposition of a layer of a liquid composition containing a curable organic binder and magnetizable particles on one side of the glass sheet can be done by known methods, for example by spraying, by roller application or by application to the curtain.
  • the liquid composition contains at least one organic binder, preferably a polymeric binder.
  • Curing is understood to mean any step which has the consequence of increasing the viscosity of the liquid composition to a level sufficient to freeze the magnetizable particles in their position and prevent any modification or disappearance of the pattern even when the initial magnetic field disappears or is replaced by a different magnetic field.
  • Curing can be done by simple evaporation of a solvent, or by a polymerization reaction and / or crosslinking of the monomers, oligomers and / or polymers forming the organic binder, initiated by heating or irradiation of the liquid composition layer.
  • organic binder is not critical to the practice of the present invention and any film-forming base of paint, lacquer, ink or varnish can be used in principle.
  • Magnetizable particles are known as such. They may be ferromagnetic or paramagnetic particles. They preferably, but not necessarily, have an anisotropic form, particularly an elongated or flattened form. Such particles are described for example in the following applications and patents: US 3,676,273, US 4,838,648, WO 02/073250, EP 686,675 or WO 2007/131833.
  • the magnetizable particles preferably represent between 10 and 70% by weight of the liquid composition, in particular between 20 and 60% by weight of the liquid composition.
  • the liquid composition may further contain non-magnetizable pigments and other adjuvants conventionally used in paints, lacquers and varnishes.
  • the first layer of liquid composition contains, as single pigments, magnetizable particles. After curing, the layer then has a certain translucency and may advantageously be covered with a second pigmented layer, free of magnetizable particles.
  • the liquid composition layer containing the curable organic binder and the magnetizable particles is applied to the glass sheet preferably in an amount such that the surface weight of the dried and cured layer is between 30 g / m 2 and 250 g / m 2 .
  • the thickness of the dried and cured layer is advantageously between a few microns and several tens of microns, for example between 1 and 200 microns, preferably between 5 and 150 microns, in particular between 10 and 100 microns.
  • the curing device may for example be a chamber heated typically at a temperature between 50 and 200 ° C, or a radiation source emitting radiation absorbed by one or more components of the organic binder, for example by initiators or photoinitiators.
  • the radiation may be radiation in the visible, UV or infrared range, preferably near infrared.

Abstract

The invention relates to a method for producing lacquered glass, comprising: depositing, on one face of a glass sheet, a layer of a liquid composition containing a curable organic binder and magnetisable particles dispersed in the organic binder: creating a magnetic field in the immediate vicinity of the layer of liquid composition, such as to orientate and/or move the magnetisable particles and thus create a visible pattern; and curing the organic binder. The three steps are carried out while the glass sheet is transported by means of a conveyor successively before: a device for depositing a liquid composition, a device for creating a magnetic field, and a device for curing the organic binder. The method is characterized in that the device for creating a magnetic field is an endless belt mounted on at least two rotating rollers, of which at least one is driven by a motor, the surface of the endless belt being provided with one or more magnetic elements.

Description

PROCEDE DE FABRICATION DE VERRE PEINT OU LAQUE  PROCESS FOR PRODUCING PAINTED GLASS OR LACQUER
La présente invention concerne un procédé de fabrication de verre peint ou laqué comprenant une étape de création de motifs visibles dans la couche de peinture ou de laque par orientation et/ou déplacement de particules magnétisables au moyen d'un champ magnétique. The present invention relates to a method for manufacturing painted or lacquered glass comprising a step of creating visible patterns in the paint or lacquer layer by orientation and / or displacement of magnetizable particles by means of a magnetic field.
On connaît des demandes internationales WO2014/009306 et WO2015/071 125 un procédé de fabrication de verres décoratifs laqués ou peints comprenant l'application, sur une feuille de verre, d'une composition liquide contenant des particules magnétisables, le convoyage de la feuille de verre enduite d'une couche de cette composition liquide au moyen d'un convoyeur horizontal à rouleaux, l'exposition de la couche de composition liquide à un champ magnétique créé par des éléments magnétiques intégrés dans la surface d'au moins un des rouleaux du convoyeur, puis le durcissement de la composition liquide.  International Applications WO2014 / 009306 and WO2015 / 071125 disclose a process for manufacturing lacquered or painted decorative glasses comprising the application, on a sheet of glass, of a liquid composition containing magnetizable particles, the conveying of the sheet of glass coated with a layer of this liquid composition by means of a horizontal roller conveyor, exposing the layer of liquid composition to a magnetic field created by magnetic elements integrated in the surface of at least one of the rolls of the conveyor, then curing the liquid composition.
L'exposition des particules magnétisables contenues dans la composition liquide aux lignes de champ magnétique entraîne un changement de l'organisation des particules et la création de motifs visibles par concentration ou orientation sélective des particules.  The exposure of the magnetizable particles contained in the liquid composition to the magnetic field lines causes a change in the organization of the particles and the creation of visible patterns by concentration or selective orientation of the particles.
Dans le procédé de l'état de la technique, les aimants permanents ou électroaimants sont intégrés dans la surface d'au moins un des rouleaux du convoyeur transportant la feuille de verre. La vitesse tangentielle des aimants est toujours égale à la vitesse de convoyage de la feuille de verre, l'identité de ces deux vitesses garantissant un espacement régulier des motifs ou images créés.  In the method of the state of the art, the permanent magnets or electromagnets are integrated in the surface of at least one of the rollers of the conveyor carrying the glass sheet. The tangential velocity of the magnets is always equal to the conveying speed of the glass sheet, the identity of these two speeds guarantee a regular spacing of the patterns or images created.
Le procédé connu ne permet pas de créer facilement des motifs de grande taille : la dimension des motifs dans le sens de défilement de la feuille de verre est en effet limitée à la circonférence du rouleau du convoyeur dans lequel sont incorporés les aimants. Lorsqu'on souhaite augmenter la taille des motifs à plusieurs dizaines de centimètres voire à quelques mètres, on se trouve confronté à la difficulté qu'implique une augmentation très importante de la taille du rouleau magnétique, notamment l'encombrement important. La présente invention a pour but de proposer un procédé similaire à celui décrit dans les demandes WO2014/009306 et WO2015/071 125 mais qui permet de créer des motifs de grande taille sans qu'il soit nécessaire d'augmenter la taille d'un ou plusieurs des rouleaux du convoyeur. The known method does not allow to easily create large patterns: the size of the patterns in the direction of travel of the glass sheet is indeed limited to the circumference of the conveyor roller in which the magnets are incorporated. When it is desired to increase the size of the patterns to several tens of centimeters or even a few meters, one is confronted with the difficulty involved in a very significant increase in the size of the magnetic roller, including large size. The purpose of the present invention is to propose a method similar to that described in applications WO2014 / 009306 and WO2015 / 071 125, but which makes it possible to create large patterns without the need to increase the size of one or several of the conveyor rollers.
Le procédé de la présente invention fonctionne avec un tapis sans fin, magnétique et magnétiseur, monté sur au moins deux rouleaux du convoyeur. La dimension du tapis, dans le sens de défilement de la feuille de verre est plus importante que la circonférence de chacun des rouleaux du convoyeur et détermine la dimension maximale des motifs magnétiques qui peuvent être créés. L'utilisation d'un tapis sans fin n'implique aucune augmentation de l'encombrement du convoyeur, par rapport à un convoyeur similaire sans tapis.  The method of the present invention operates with an endless, magnetic and magnetizer belt mounted on at least two conveyor rollers. The size of the carpet in the direction of travel of the glass sheet is larger than the circumference of each of the conveyor rolls and determines the maximum dimension of the magnetic patterns that can be created. The use of an endless belt does not imply any increase in the size of the conveyor, compared to a similar conveyor without carpet.
Tel qu'illustré par les Figures 1 et 2, la présente invention a par conséquent pour objet un procédé de fabrication de verre laqué comprenantAs illustrated by FIGS. 1 and 2, the subject of the present invention is therefore a process for manufacturing lacquered glass comprising
- le dépôt, sur une face d'une feuille de verre 1 , d'une couche 5 d'une composition liquide 3 contenant un liant organique durcissable et des particules magnétisables dispersées dans le liant organique, depositing, on one side of a glass sheet 1, a layer 5 of a liquid composition 3 containing a curable organic binder and magnetizable particles dispersed in the organic binder,
- la création d'un champ magnétique à proximité immédiate de la couche 5 de composition liquide de manière à orienter et/ou déplacer les particules magnétisables et créer ainsi un motif 10 visible, et  the creation of a magnetic field in the immediate vicinity of the layer 5 of liquid composition so as to orient and / or move the magnetizable particles and thus create a visible pattern, and
- le durcissement du liant organique,  the hardening of the organic binder,
les trois étapes étant mises en œuvre pendant que la feuille de verre 1 est transportée au moyen d'un convoyeur, comportant une pluralité de rouleaux 2, successivement devant the three steps being implemented while the sheet of glass 1 is transported by means of a conveyor, comprising a plurality of rollers 2, successively in front of
- un dispositif de dépôt 4 d'une composition liquide 3,  a deposition device 4 of a liquid composition 3,
- un dispositif de création d'un champ magnétique 9, et a device for creating a magnetic field 9, and
- un dispositif de durcissement 1 1 du liant organique, a hardening device 1 1 of the organic binder,
le procédé étant caractérisé par le fait que le dispositif de création d'un champ magnétique 9 est un tapis sans fin 6 monté sur au moins deux rouleaux 2 du convoyeur, dont au moins un est entraîné par un moteur, le tapis sans fin 6 étant pourvu, à sa surface, d'un ou plusieurs éléments magnétiques 7. Le procédé de la présente invention présente en outre l'avantage de donner, pour une vitesse de défilement donnée, une meilleure résolution que le procédé de l'état de la technique. Chaque point de la feuille de verre reste en contact avec le ou les éléments magnétiques fixés sur le tapis pendant une durée plus longue que si ces les mêmes éléments étaient fixés sur un rouleau du convoyeur, the method being characterized in that the device for creating a magnetic field 9 is an endless belt 6 mounted on at least two rollers 2 of the conveyor, of which at least one is driven by a motor, the endless belt 6 being provided on its surface with one or more magnetic elements 7. The method of the present invention further has the advantage of giving, for a given scrolling speed, a better resolution than the method of the state of the art. Each point of the glass sheet remains in contact with the magnetic element or elements fixed on the carpet for a longer duration than if these same elements were fixed on a conveyor roll,
L'augmentation de la durée de contact du ou des éléments magnétiques avec le substrat en verre peut également permettre, pour une qualité de résolution donnée, de faire fonctionner le procédé à une cadence ou vitesse de défilement plus important.  The increase in the duration of contact of the magnetic element (s) with the glass substrate may also make it possible, for a given quality of resolution, to make the process operate at a higher rate or speed of scrolling.
Par ailleurs, ces deux avantages sont obtenus avec une installation présentant un encombrement identique ou très faiblement supérieur à celui du procédé de l'état de la technique.  Moreover, these two advantages are obtained with an installation having an identical or very slightly greater size than that of the method of the state of the art.
Les dimensions du tapis sans fin magnétiseur peuvent être choisies librement en fonction du nombre et de la taille des motifs et images que l'on souhaite créer : plus la taille des motifs ou images est importante, plus la largeur et la longueur du tapis doivent être grandes.  The dimensions of the endless carpet magnetizer can be chosen freely according to the number and the size of the patterns and images that one wishes to create: the larger the size of the patterns or images, the greater the width and the length of the carpet must be large.
Les dimensions du tapis sans fin peuvent être choisies entre de larges limites : sa longueur dans le sens de défilement de la feuille de verre est par exemple comprise entre 50 cm et 10 m, de préférence entre 80 cm et 5 m, en particulier entre 1 ,5 m et 4 m. La largeur du tapis, dans la direction perpendiculaire à la direction de défilement de la feuille de verre est comprise avantageusement entre 40 cm et 4 m, de préférence entre 80 cm et 3,5 m et en particulier entre 1 ,0 m et 3,0.  The dimensions of the endless carpet can be chosen between wide limits: its length in the direction of travel of the glass sheet is for example between 50 cm and 10 m, preferably between 80 cm and 5 m, in particular between 1 , 5 m and 4 m. The width of the carpet, in the direction perpendicular to the direction of travel of the glass sheet is advantageously between 40 cm and 4 m, preferably between 80 cm and 3.5 m and in particular between 1.0 m and 3 m, 0.
Les éléments magnétiques, ou aimants, sont de préférence des aimants permanents, plus simples à mettre en œuvre que des électroaimants. On peut citer à titre d'exemples de matériaux magnétiques susceptibles d'être utilisés pour le procédé selon l'invention les aciers, les ferrites, les alliages composés principalement d'aluminium (Al), de nickel (Ni) et de cobalt (Co) (Alnico), les alliages à base de samarium et de cobalt et les alliages à base de néodyme, de fer et de bore. The magnetic elements, or magnets, are preferably permanent magnets, easier to implement than electromagnets. Examples of magnetic materials that may be used for the process according to the invention include steels, ferrites, alloys composed mainly of aluminum (Al), nickel (Ni) and cobalt (Co) (Alnico), samarium and cobalt based alloys and neodymium, iron and boron alloys.
Les éléments magnétiques peuvent faire saillie par rapport à la surface du tapis sans fin, ils peuvent être au ras de la surface du tapis, ou bien ils peuvent être légèrement en retrait de la surface du tapis. Dans les trois cas, il peut être intéressant de couvrir la surface et les éléments magnétiques avec un mince film en matière plastique afin de les protéger, de mieux les maintenir en place ou de faciliter leur nettoyage.  The magnetic elements may protrude from the surface of the endless carpet, they may be flush with the surface of the carpet, or they may be slightly recessed from the carpet surface. In all three cases, it may be interesting to cover the surface and the magnetic elements with a thin plastic film in order to protect them, to better hold them in place or to facilitate their cleaning.
Le tapis sans fin est en un matériau souple résistant à la traction, de préférence une feuille en polymère organique.  The endless belt is made of a flexible tensile material, preferably an organic polymer sheet.
Le dépôt d'une couche d'une composition liquide contenant un liant organique durcissable et des particules magnétisables sur une face de la feuille de verre peut se faire selon des méthodes connues, par exemple par pulvérisation, par application au rouleau ou encore par application au rideau.  The deposition of a layer of a liquid composition containing a curable organic binder and magnetizable particles on one side of the glass sheet can be done by known methods, for example by spraying, by roller application or by application to the curtain.
La composition liquide contient au moins un liant organique, de préférence un liant polymérique. On entend par durcissement toute étape qui a pour conséquent d'augmenter la viscosité de la composition liquide jusqu'à un niveau suffisant pour figer les particules magnétisables dans leur position et empêcher toute modification ou disparition du motif même lorsque le champ magnétique initial disparaît ou est remplacé par un champ magnétique différent.  The liquid composition contains at least one organic binder, preferably a polymeric binder. Curing is understood to mean any step which has the consequence of increasing the viscosity of the liquid composition to a level sufficient to freeze the magnetizable particles in their position and prevent any modification or disappearance of the pattern even when the initial magnetic field disappears or is replaced by a different magnetic field.
Le durcissement peut se faire par simple évaporation d'un solvant, ou bien par une réaction de polymérisation et/ou de réticulation des monomères, oligomères et/ou polymères formant le liant organique, amorcée par chauffage ou irradiation de la couche de composition liquide.  Curing can be done by simple evaporation of a solvent, or by a polymerization reaction and / or crosslinking of the monomers, oligomers and / or polymers forming the organic binder, initiated by heating or irradiation of the liquid composition layer.
La nature chimique du liant organique n'est pas déterminante pour la mise en œuvre de la présente invention et on peut utiliser en principe n'importe quelle base filmogène de peinture, laque, encre ou vernis.  The chemical nature of the organic binder is not critical to the practice of the present invention and any film-forming base of paint, lacquer, ink or varnish can be used in principle.
Les particules magnétisables sont connues en tant que telles. Il peut s'agir de particules ferromagnétiques ou paramagnétiques. Elles ont de préférence, mais pas nécessairement, une forme anisotrope, en particulier une forme allongée ou aplatie. De telles particules sont décrites par exemple dans les demandes et brevets suivants : US 3 676 273, US 4 838 648, WO 02/073250, EP 686 675 ou WO 2007/131833. Les particules magnétisables représentent de préférence entre 10 et 70 % en poids de la composition liquide, en particulier entre 20 et 60 % en poids de la composition liquide. Magnetizable particles are known as such. They may be ferromagnetic or paramagnetic particles. They preferably, but not necessarily, have an anisotropic form, particularly an elongated or flattened form. Such particles are described for example in the following applications and patents: US 3,676,273, US 4,838,648, WO 02/073250, EP 686,675 or WO 2007/131833. The magnetizable particles preferably represent between 10 and 70% by weight of the liquid composition, in particular between 20 and 60% by weight of the liquid composition.
La composition liquide peut contenir en outre des pigments non magnétisables et d'autres adjuvants utilisés classiquement dans les peintures, laques et vernis.  The liquid composition may further contain non-magnetizable pigments and other adjuvants conventionally used in paints, lacquers and varnishes.
Dans un mode de réalisation particulier, la première couche de composition liquide contient, comme seuls pigments, des particules magnétisables. Après durcissement, la couche présente alors une certaine translucidité et peut avantageusement être couverte d'une deuxième couche pigmentée, exempte de particules magnétisables.  In a particular embodiment, the first layer of liquid composition contains, as single pigments, magnetizable particles. After curing, the layer then has a certain translucency and may advantageously be covered with a second pigmented layer, free of magnetizable particles.
La couche de composition liquide contenant le liant organique durcissable et les particules magnétisables est appliquée sur la feuille de verre de préférence en une quantité telle que le poids surfacique de la couche séchée et durcie est compris entre 30 g/m2 et 250 g/m2. The liquid composition layer containing the curable organic binder and the magnetizable particles is applied to the glass sheet preferably in an amount such that the surface weight of the dried and cured layer is between 30 g / m 2 and 250 g / m 2 .
L'épaisseur de la couche séchée et durcie est avantageusement comprise entre quelques microns et plusieurs dizaines de microns, par exemple entre 1 et 200 microns, de préférence entre 5 et 150 microns, en particulier entre 10 et 100 microns.  The thickness of the dried and cured layer is advantageously between a few microns and several tens of microns, for example between 1 and 200 microns, preferably between 5 and 150 microns, in particular between 10 and 100 microns.
Le dispositif de durcissement peut-être par exemple une enceinte chauffée typiquement à une température comprise entre 50 et 200 °C, ou une source de rayonnement émettant un rayonnement absorbé par un ou plusieurs composants du liant organique, par exemple par des amorceurs ou photoamorceurs. Le rayonnement peut être un rayonnement dans le domaine du visible, de l'UV ou de l'infrarouge, de préférence le proche infrarouge.  The curing device may for example be a chamber heated typically at a temperature between 50 and 200 ° C, or a radiation source emitting radiation absorbed by one or more components of the organic binder, for example by initiators or photoinitiators. The radiation may be radiation in the visible, UV or infrared range, preferably near infrared.

Claims

REVENDICATIONS
1 . Procédé de fabrication de verre laqué comprenant 1. Method of manufacturing lacquered glass comprising
le dépôt, sur une face d'une feuille de verre, d'une couche d'une composition liquide contenant un liant organique durcissable et des particules magnétisables dispersées dans le liant organique,  depositing, on one side of a glass sheet, a layer of a liquid composition containing a curable organic binder and magnetizable particles dispersed in the organic binder,
la création d'un champ magnétique à proximité immédiate de la couche de composition liquide de manière à orienter et/ou déplacer les particules magnétisables et créer ainsi un motif visible, et  creating a magnetic field in the immediate vicinity of the liquid composition layer so as to orient and / or move the magnetizable particles and thus create a visible pattern, and
le durcissement du liant organique,  hardening of the organic binder,
les trois étapes étant mises en œuvre pendant que la feuille de verre est transportée au moyen d'un convoyeur, comportant une pluralité de rouleaux, successivement devant the three steps being implemented while the glass sheet is transported by means of a conveyor, comprising a plurality of rollers, successively in front of
- un dispositif de dépôt d'une composition liquide,  a device for depositing a liquid composition,
- un dispositif de création d'un champ magnétique, et  a device for creating a magnetic field, and
- un dispositif de durcissement du liant organique,  a device for curing the organic binder,
le procédé étant caractérisé par le fait que le dispositif de création d'un champ magnétique est un tapis sans fin monté sur au moins deux rouleaux du convoyeur, dont au moins un est entraîné par un moteur, le tapis sans fin étant pourvu, à sa surface, d'un ou plusieurs éléments magnétiques. the method being characterized in that the device for creating a magnetic field is an endless belt mounted on at least two rollers of the conveyor, of which at least one is driven by a motor, the endless belt being provided, at its surface, of one or more magnetic elements.
EP17787484.9A 2016-09-29 2017-09-27 Method for the production of painted or lacquered glass Withdrawn EP3519203A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1659302A FR3056443B1 (en) 2016-09-29 2016-09-29 PROCESS FOR PRODUCING PAINTED GLASS OR LACQUER
PCT/FR2017/052624 WO2018060618A1 (en) 2016-09-29 2017-09-27 Method for the production of painted or lacquered glass

Publications (1)

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EP3519203A1 true EP3519203A1 (en) 2019-08-07

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EP (1) EP3519203A1 (en)
KR (1) KR20190059900A (en)
BR (1) BR112019004889A2 (en)
FR (1) FR3056443B1 (en)
MX (1) MX2019003159A (en)
WO (1) WO2018060618A1 (en)

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CN109663723B (en) * 2018-12-28 2021-10-08 安徽龙芯微科技有限公司 Drying device for wafer
FR3114522B1 (en) * 2020-09-25 2023-06-16 Verescence France METHOD AND INSTALLATION FOR MANUFACTURING A DECORATED CONTAINER FOR A COSMETIC PRODUCT

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3676273A (en) 1970-07-30 1972-07-11 Du Pont Films containing superimposed curved configurations of magnetically orientated pigment
FR2491893A1 (en) * 1980-10-15 1982-04-16 Gillet Pierre Magnetic conveyor for non-ferrous material - uses moving endless belt with magnets housed in fixed belt of profile traversed by metal belt sections
FR2561217A1 (en) * 1984-03-16 1985-09-20 Vallet Ets L Device for the continuous conveying of metal elements
US4838648A (en) 1988-05-03 1989-06-13 Optical Coating Laboratory, Inc. Thin film structure having magnetic and color shifting properties
DE4419173A1 (en) 1994-06-01 1995-12-07 Basf Ag Magnetizable multi-coated metallic gloss pigments
EP1239307A1 (en) 2001-03-09 2002-09-11 Sicpa Holding S.A. Magnetic thin film interference device
EP1854852A1 (en) 2006-05-12 2007-11-14 Sicpa Holding S.A. Coating composition for producing magnetically induced images
AT505220B1 (en) * 2007-04-17 2010-08-15 Htp Skinline Gmbh METHOD FOR PRODUCING A VISIBLE PATTERN ON A CARRIER
BE1020786A3 (en) 2012-07-10 2014-05-06 Agc Glass Europe METHOD FOR PRODUCING MAGNETICALLY INDUCED PATTERNS IN A LAYER DEPOSITED ON A GLASS SHEET
EP2871065A1 (en) * 2013-11-12 2015-05-13 AGC Glass Europe Method for producing patterns magnetically induced in a layer deposited on a glass sheet

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MX2019003159A (en) 2019-05-27
BR112019004889A2 (en) 2019-06-11
WO2018060618A1 (en) 2018-04-05
KR20190059900A (en) 2019-05-31
FR3056443A1 (en) 2018-03-30

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