EP4370327A1 - Procédé de fabrication d'un vitrage feuilleté éclairant transparent à l'état éteint - Google Patents
Procédé de fabrication d'un vitrage feuilleté éclairant transparent à l'état éteintInfo
- Publication number
- EP4370327A1 EP4370327A1 EP22744247.2A EP22744247A EP4370327A1 EP 4370327 A1 EP4370327 A1 EP 4370327A1 EP 22744247 A EP22744247 A EP 22744247A EP 4370327 A1 EP4370327 A1 EP 4370327A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- laminated glazing
- light
- glazing
- process according
- ink
- 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.)
- Pending
Links
Classifications
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- B32B17/10036—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets comprising two outer glass sheets
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- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
- B41J3/407—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material
- B41J3/4073—Printing on three-dimensional objects not being in sheet or web form, e.g. spherical or cubic objects
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
- B41M5/52—Macromolecular coatings
- B41M5/5254—Macromolecular coatings characterised by the use of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds, e.g. vinyl polymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
- B41M5/52—Macromolecular coatings
- B41M5/5263—Macromolecular coatings characterised by the use of polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- B41M5/5281—Polyurethanes or polyureas
Definitions
- This invention relates to illuminating glazing according to various known light emission methods, according to patterns of all complexity, according to different colors, among others.
- a demand for this type of glazing exists in particular in the automotive field, for example for glass roofs.
- the printed patterns thus obtained are then illuminated by activating edge lighting on the glazing, which may consist of a light-emitting diode LED bar (in English light-emitting diode - LED -) placed on the edges of the glazing, or a circular LED placed in a hole provided within the illuminating glazing.
- the printed diffusing patterns are visible to the passengers of the automobile, whether the window lighting is activated or not.
- the printed materials can be colored or translucent for example.
- edge lighting switching off or absent
- the printed patterns are visible from inside the vehicle and may hinder visibility through the glazing. This effect can be reduced by printing very fine patterns, but this greatly limits the flexibility of these patterns.
- the invention aims to solve this problem by proposing a method for obtaining a light extraction solution which is transparent in the off state.
- Transparent mineral pastes requiring a heat treatment between 550 and 800°C, deposited before forming the glass are not compatible with bending techniques, because they exhibit sticky behavior during processing. They cannot resist contact with the tools or the paired counter-glass (different sheets of glass in laminated glazing are frequently bent, in a known manner, by gravity sagging, in intimate contact with each other). others). Techniques to make these pastes non-sticky cause them to lose their transparency.
- the positioning of these mineral materials on the face of a sheet of glass intended to constitute the main interior face of the laminated glazing, not requiring the absence of stickiness of the materials, is not acceptable because transparent enamels have a low resistance to aging, and this positioning is not appreciated by consumers.
- the inner main face of the laminated glazing relates to the volume delimited by the laminated glazing, in particular the passenger compartment of a motor vehicle).
- the subject of the invention is a method for manufacturing laminated glazing comprising at least two sheets of glass bonded to one another by an intermediate adhesive layer, characterized in that it comprises, prior to the assembly of the laminated glazing, a digital printing of a face intended to be inside the laminated structure, of at least one of the two sheets of glass after their possible forming / bending, and/or of a face at least of the intermediate adhesive layer, by means of a homogeneous organic ink with a viscosity of between 1 and 50 mPa.s comprising 50 to 99% by mass of resin curable under ultraviolet radiation, and 0.05 to 20% by mass of scattering particles, then the curing of the organic ink under illumination by ultraviolet radiation.
- a curable (or crosslinkable) ink under UV light diffusing and transparent is deposited by a digital printing process.
- a digital printing technique direct printing on the substrate
- a resin curable under UV radiation is a composition of uncrosslinked monomers and/or oligomers, in an intermediate reaction/polymerization state, and optionally one or more UV curing initiators.
- the ink dries quickly (hardening under UV), compatible with the cycle times required on automotive laminated glazing production lines. This drying is no longer the bottleneck of the laminated glazing assembly. Adhesion to glass is good. No adhesion primer is required.
- the intermediate adhesive layer is made of polyvinyl butyral (PVB), thermoplastic polyurethane (TPU), ethylene-vinyl acetate copolymer (EVA), ionomer.
- PVB polyvinyl butyral
- TPU thermoplastic polyurethane
- EVA ethylene-vinyl acetate copolymer
- ionomer ionomer
- An example of a monomer resin is marketed by the Kuraray Company under the registered trademark SentryGlas®.
- the ink contains 0.01 to 20% by mass of one or more agents for modifying its rheology.
- the ink contains 0.1 to 20% by weight of thermoplastic polymer material at 1 to 20% by weight in one or more organic solvents.
- the thermoplastic material can be chosen from polyvinyl butyral (PVB), thermoplastic polyurethane (TPU), ethylene-vinyl acetate copolymer (EVA), ionomer, alone or as a mixture or copolymer of several of them.
- the thermoplastic polymer material may contain 5 to 45% by mass of plasticizer.
- plasticizer mention may be made of a benzoate ester, a phthalate and/or its derivative, an adipate and/or its derivative, a fatty acid ester, a trioctyltrimellitate, a triacetin, a glycerol, a propylene glycol, a sorbitol or a trimethylpentanedioldiisobutyrate, alone or as a mixture of several of them.
- the scattering particles have a particle size defined by D90 of less than 2 ⁇ m, preferably between 100 and 700 nm, in particular around 400 nm.
- the scattering particles are chosen from non-luminescent particles of TiC>2, SiC>2, CaCC>3, ZnO, Al2O3, ZrC>2.
- the organic ink comprises at most 5% by mass of luminescent particles, chosen from luminophores, fast-decreasing fluorescent particles or molecules coating non-luminescent particles.
- the luminescent particles are dispersed in the polymer matrix. The durability of these luminescent particles to light radiation must be high so as not to lead to an accelerated decay of the initial properties. An example of this consists of the product marketed by the BASF Company under the registered trademark TINOPAL® OB CO.
- the resin curable under ultraviolet radiation is chosen from a reaction product between a thiol and an alkene (called thiol-ene), an acrylate such as epoxy-acrylate, polyester-acrylate, urethane-acrylate, silicone-acrylate alone or as a mixture of several of them.
- thiol-ene an alkene
- an acrylate such as epoxy-acrylate, polyester-acrylate, urethane-acrylate, silicone-acrylate alone or as a mixture of several of them.
- the intermediate adhesive layer has a roughness Rz of between 5 and 25, preferably 10 and 15 ⁇ m.
- the ink is printed directly on the intermediate adhesive layer by inkjet printing with one or more passes.
- the ink is printed directly on a curved glass sheet by inkjet printing in one or more passes.
- the printheads are mounted on a multi-axis robot and the glass sheet is fixed.
- the curved sheet of glass is held by a multi-axis robot under the immobile print heads.
- Inkjet printing can be done on a three-dimensional substrate.
- first embodiment printing on the intermediate adhesive layer
- second printing on a sheet of curved glass
- the laminated glazing comprises a light source, such as a light-emitting diode LED (in English light-emitting diode - LED -), one of said two glass sheets or said intermediate adhesive layer constitutes a light guide optically coupled to the light source on the one hand, to the product of said digital printing which is capable of extracting the light thus guided on the other hand.
- the LED(s) can be in or near a (through) hole in the inner glass sheet for optical coupling by the wall delimiting the hole, or facing the edge of the glass sheet interior.
- the laminated glazing preferably comprises a light source, such as a light-emitting diode LED (in English light-emitting diode - LED -), emitting a light of length d wave at which the luminescent particles are excited and re-emit light radiation in the visible range.
- a light source such as a light-emitting diode LED (in English light-emitting diode - LED -)
- LEDs can be positioned as already indicated above.
- This excitation wavelength is for example in the UV in particular UVA, and even 365 to 400 or 390 nm.
- the laminated glazing has low solar energy transmission (in English Total Solar Transmittance) in the visible and infrared domains. In other words, the amount of solar energy transmitted by the laminated glazing is low.
- face 2 is provided with a stack of thin layers of solar control (reflecting solar radiation), such as a silver multilayer, and/or the face 4 of a low-emissivity coating in particular based on indium oxide doped with tin (in English Indium Tin Oxide - ITO - ), for example.
- a low-emissivity coating reflects infrared radiation inside a building or passenger compartment, so as to keep the heat in when the outside temperature is low.
- the laminated glazing comprises a functional film based on liquid crystals encapsulated, or dispersed in a polymer matrix (in English Polymer Dispersed Liquid Crystals - PDLC -), electrophoretic particles dispersed in a medium, particles dispersed in an electrophoretic fluid , or a Suspended Particle Device (SPD) film, or an electrochromic system.
- a functional film based on liquid crystals encapsulated, or dispersed in a polymer matrix (in English Polymer Dispersed Liquid Crystals - PDLC -), electrophoretic particles dispersed in a medium, particles dispersed in an electrophoretic fluid , or a Suspended Particle Device (SPD) film, or an electrochromic system.
- the one of said two sheets of glass intended to be more outside the volume delimited by the laminated glazing is tinted, while the other of said two sheets of glass, the inner sheet, is clear or extra-clear (in especially when it constitutes the light guide).
- the invention also relates to the use of a laminated glazing obtained by a manufacturing process described above, as glazing for land, water or air vehicles, or as glazing for buildings, in particular as automobile glazing, most particularly as a car roof.
- An organic ink with a viscosity of between 1 and 50 mPa.s is prepared by mixing
- polyvinyl butyral at 10% in an ethanol / Di(propylene glycol) methyl ether 50/50 solvent, the PVB containing 30% dimethylcyclohexyl phthalate (plasticizer), and
- T1O2 is mixed in diffusing particles whose particle size corresponds to the relationships 100 nm lower than D90 lower than 700 nm.
- a homogeneous and stable white solution is obtained over several days at rest. Good quality of the deposition is obtained on glass and on PVB with a 50 ⁇ m film puller, good adhesion even on flexible PVB, good UV curing in one passage of the conveyor.
- T1O2 we obtain a substrate provided with transparent patterns degrading the light transmission and the blur only in a very small proportion, and maintaining the clarity almost unchanged, compared to the absence of T1O2 particles.
- the use as automotive glazing, side, rear window, glass roof... is perfectly feasible in compliance with optical standards.
- the patterns formed with the T1O2 particles are able to extract the light from an LED bar at the edge of the glazing, for example, the glass sheet or the PVB layer constituting both the substrate and the light guide coupling the LED bar and the patterns.
- the invention makes it possible to obtain glazing capable of illuminating in several colors, simultaneously or sequentially.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- Ceramic Engineering (AREA)
- Joining Of Glass To Other Materials (AREA)
- Laminated Bodies (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2107648A FR3125251A1 (fr) | 2021-07-15 | 2021-07-15 | Procédé de fabrication d’un vitrage feuilleté éclairant transparent à l’état éteint |
| PCT/FR2022/051170 WO2023285743A1 (fr) | 2021-07-15 | 2022-06-16 | Procédé de fabrication d'un vitrage feuilleté éclairant transparent à l'état éteint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4370327A1 true EP4370327A1 (fr) | 2024-05-22 |
Family
ID=78086456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22744247.2A Pending EP4370327A1 (fr) | 2021-07-15 | 2022-06-16 | Procédé de fabrication d'un vitrage feuilleté éclairant transparent à l'état éteint |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20240326385A1 (fr) |
| EP (1) | EP4370327A1 (fr) |
| CN (1) | CN115812037A (fr) |
| FR (1) | FR3125251A1 (fr) |
| WO (1) | WO2023285743A1 (fr) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US12071365B2 (en) | 2022-07-08 | 2024-08-27 | Agc Automotive Americas Co. | Glass assembly including a performance-enhancing feature and method of manufacturing thereof |
| US12090729B2 (en) | 2022-07-08 | 2024-09-17 | Agc Automotive Americas Co. | Glass assembly including an opaque boundary feature and method of manufacturing thereof |
| FR3145918A1 (fr) | 2023-02-17 | 2024-08-23 | Saint-Gobain Glass France | Toit vitré feuilleté illuminable DE vehicule, VEhicule AVEC UN TEL Toit vitré feuilleté illuminable |
| WO2024242130A1 (fr) | 2023-05-23 | 2024-11-28 | 日本精機株式会社 | Dispositif de commande d'affichage, système d'affichage et procédé de commande d'affichage |
| FR3154942B1 (fr) | 2023-11-07 | 2025-10-24 | Saint Gobain | Vitrage feuilleté illuminable de véhicule |
| FR3154940B1 (fr) | 2023-11-07 | 2025-10-24 | Saint Gobain | Vitrage feuilleté illuminable de véhicule |
| FR3154941A1 (fr) | 2023-11-07 | 2025-05-09 | Saint-Gobain Glass France | Vitrage feuilleté de véhicule illuminable |
| FR3161596A1 (fr) | 2024-04-30 | 2025-10-31 | Saint-Gobain Glass France | Élément vitré feuilleté illuminable de vehicule, véhicule avec un tel élément vitré feuilleté illuminable |
| FR3163602A1 (fr) | 2024-06-20 | 2025-12-26 | Saint-Gobain Glass France | VITRAGE feuilleté illuminable DE vehicule, VEhicule AVEC UN TEL VITRAGE feuilleté illuminable |
| FR3163605A1 (fr) | 2024-06-20 | 2025-12-26 | Saint-Gobain Glass France | VITRAGE feuilleté illuminable DE vehicule, VEhicule AVEC UN TEL VITRAGE feuilleté illuminable |
| FR3163603A1 (fr) | 2024-06-20 | 2025-12-26 | Saint-Gobain Glass France | Élément vitré feuilleté illuminable de véhicule, véhicule avec un tel élément vitré feuilleté illuminable |
| FR3163604A1 (fr) | 2024-06-20 | 2025-12-26 | Saint-Gobain Glass France | VITRAGE feuilleté illuminable DE vehicule, VEhicule AVEC UN TEL VITRAGE feuilleté illuminable |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3973058A (en) * | 1974-12-23 | 1976-08-03 | Monsanto Company | Method for printing interlayers for laminated safety glass |
| KR910000733B1 (ko) * | 1987-03-09 | 1991-02-06 | 다이니폰 인사츠 가부시키가이샤 | 적층유리시이트용 화장중간막의 제조방법 |
| US5487939A (en) * | 1991-03-14 | 1996-01-30 | E. I. Du Pont De Nemours And Company | Process for preparation of colored thermoplastic composite sheeting for laminated structures |
| DE4406097A1 (de) * | 1994-02-25 | 1995-08-31 | Dornier Gmbh | Verglasung |
| US6451435B1 (en) * | 1997-12-19 | 2002-09-17 | E. I. Du Pont De Nemours & Co. | Interlayer structure for laminated glass |
| JP4630277B2 (ja) * | 2003-05-28 | 2011-02-09 | デプナー バウエレメンテ ゲーエムベーハー ウント コー カーゲー | 複合体を製造する方法および装置、並びに複合体 |
| EP1644293B2 (fr) * | 2003-07-11 | 2022-04-13 | Pilkington Group Limited | Vitrage solaire |
| US20060191625A1 (en) * | 2005-02-28 | 2006-08-31 | Ferro Corporation | Method of decorating laminated glass |
| US20080233371A1 (en) * | 2007-03-19 | 2008-09-25 | Richard Allen Hayes | Decorative safety glass |
| WO2011021052A2 (fr) * | 2009-08-21 | 2011-02-24 | Sericol Limited | Encre, appareil et procédé d'impression |
| FR2964447B1 (fr) * | 2010-09-02 | 2012-08-24 | Saint Gobain | Vitrage feuillete eclairant a diodes electroluminescentes et sa fabrication |
| EP2711346A1 (fr) * | 2012-09-25 | 2014-03-26 | Falco Technologies BVBA | Panneau multicouche et procédé de fabrication d'un panneau multicouche |
| CN105636787B (zh) * | 2013-10-23 | 2020-07-10 | 塞拉洛克创新股份有限公司 | 形成装饰性耐磨层的方法 |
| FR3056147B1 (fr) * | 2016-09-21 | 2021-02-12 | Saint Gobain | Procede d'impression sur une face exterieure d'un vitrage feuillete |
| JP7432297B2 (ja) * | 2017-05-23 | 2024-02-16 | Agc株式会社 | 表示装置、および、印刷層付き板の製造方法 |
| IT201900013911A1 (it) * | 2019-08-05 | 2021-02-05 | Epta Inks S P A | Inchiostro diffondente la luce per la stampa su substrati trasparenti |
-
2021
- 2021-07-15 FR FR2107648A patent/FR3125251A1/fr active Pending
-
2022
- 2022-06-16 US US18/576,661 patent/US20240326385A1/en active Pending
- 2022-06-16 WO PCT/FR2022/051170 patent/WO2023285743A1/fr not_active Ceased
- 2022-06-16 CN CN202280004341.9A patent/CN115812037A/zh active Pending
- 2022-06-16 EP EP22744247.2A patent/EP4370327A1/fr active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| US20240326385A1 (en) | 2024-10-03 |
| CN115812037A (zh) | 2023-03-17 |
| WO2023285743A1 (fr) | 2023-01-19 |
| FR3125251A1 (fr) | 2023-01-20 |
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