WO2022223586A1 - Nouveau procédé de stratification pour produire un ensemble vitrage stratifié isolant sous vide - Google Patents

Nouveau procédé de stratification pour produire un ensemble vitrage stratifié isolant sous vide Download PDF

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Publication number
WO2022223586A1
WO2022223586A1 PCT/EP2022/060369 EP2022060369W WO2022223586A1 WO 2022223586 A1 WO2022223586 A1 WO 2022223586A1 EP 2022060369 W EP2022060369 W EP 2022060369W WO 2022223586 A1 WO2022223586 A1 WO 2022223586A1
Authority
WO
WIPO (PCT)
Prior art keywords
insulating glazing
glass
laminated
vacuum insulating
sub
Prior art date
Application number
PCT/EP2022/060369
Other languages
English (en)
Inventor
Pierre Carleer
Perrine LEYBROS
Julien JEANFILS
Original Assignee
Agc Glass Europe
AGC Inc.
Agc Flat Glass North America, Inc.
Agc Vidros Do Brasil Ltda
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 Agc Glass Europe, AGC Inc., Agc Flat Glass North America, Inc., Agc Vidros Do Brasil Ltda filed Critical Agc Glass Europe
Priority to EP22723638.7A priority Critical patent/EP4326551A1/fr
Priority to JP2023564107A priority patent/JP2024516143A/ja
Publication of WO2022223586A1 publication Critical patent/WO2022223586A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—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
    • B32B17/10—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
    • B32B17/10005—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
    • B32B17/10009—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
    • 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
    • B32B17/10045—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 with at least one intermediate layer consisting of a glass sheet
    • B32B17/10055—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 with at least one intermediate layer consisting of a glass sheet with at least one intermediate air space
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—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
    • B32B17/10—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
    • B32B17/10005—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
    • B32B17/10009—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
    • B32B17/10082—Properties of the bulk of a glass sheet
    • B32B17/10091—Properties of the bulk of a glass sheet thermally hardened
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—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
    • B32B17/10—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
    • B32B17/10005—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
    • B32B17/10009—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
    • B32B17/10128—Treatment of at least one glass sheet
    • B32B17/10137—Chemical strengthening
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—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
    • B32B17/10—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
    • B32B17/10005—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
    • B32B17/10165—Functional features of the laminated safety glass or glazing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—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
    • B32B17/10—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
    • B32B17/10005—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
    • B32B17/10165—Functional features of the laminated safety glass or glazing
    • B32B17/10311—Intumescent layers for fire protection
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—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
    • B32B17/10—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
    • B32B17/10005—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
    • B32B17/1055—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 resin layer, i.e. interlayer
    • B32B17/10761—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 resin layer, i.e. interlayer containing vinyl acetal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—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
    • B32B17/10—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
    • B32B17/10005—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
    • B32B17/1055—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 resin layer, i.e. interlayer
    • B32B17/1077—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 resin layer, i.e. interlayer containing polyurethane
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—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
    • B32B17/10—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
    • B32B17/10005—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
    • B32B17/1055—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 resin layer, i.e. interlayer
    • B32B17/10788—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 resin layer, i.e. interlayer containing ethylene vinylacetate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—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
    • B32B17/10—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
    • B32B17/10005—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
    • B32B17/10807—Making laminated safety glass or glazing; Apparatus therefor
    • B32B17/10816—Making laminated safety glass or glazing; Apparatus therefor by pressing
    • B32B17/10825—Isostatic pressing, i.e. using non rigid pressure-exerting members against rigid parts
    • B32B17/10834—Isostatic pressing, i.e. using non rigid pressure-exerting members against rigid parts using a fluid
    • B32B17/10844—Isostatic pressing, i.e. using non rigid pressure-exerting members against rigid parts using a fluid using a membrane between the layered product and the fluid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—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
    • B32B17/10—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
    • B32B17/10005—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
    • B32B17/10807—Making laminated safety glass or glazing; Apparatus therefor
    • B32B17/10816—Making laminated safety glass or glazing; Apparatus therefor by pressing
    • B32B17/10871—Making laminated safety glass or glazing; Apparatus therefor by pressing in combination with particular heat treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—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
    • B32B17/10—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
    • B32B17/10005—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
    • B32B17/10807—Making laminated safety glass or glazing; Apparatus therefor
    • B32B17/1088—Making laminated safety glass or glazing; Apparatus therefor by superposing a plurality of layered products
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—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
    • B32B17/10—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
    • B32B17/10005—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
    • B32B17/10807—Making laminated safety glass or glazing; Apparatus therefor
    • B32B17/10972—Degassing during the lamination
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B32B27/325—Layered products comprising a layer of synthetic resin comprising polyolefins comprising polycycloolefins
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/66—Units comprising two or more parallel glass or like panes permanently secured together
    • E06B3/6612—Evacuated glazing units
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/66—Units comprising two or more parallel glass or like panes permanently secured together
    • E06B3/677—Evacuating or filling the gap between the panes ; Equilibration of inside and outside pressure; Preventing condensation in the gap between the panes; Cleaning the gap between the panes
    • E06B3/6775—Evacuating or filling the gap during assembly
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/10—Properties of the layers or laminate having particular acoustical properties
    • B32B2307/102—Insulating
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B80/00—Architectural or constructional elements improving the thermal performance of buildings
    • Y02B80/22—Glazing, e.g. vaccum glazing

Definitions

  • the present invention relates to a novel production process of a laminated vacuum insulating glazing assembly that provides an additional performance such as acoustic, safety, security, fire resistance and/or decoration.
  • Vacuum insulating glazing do respond to the market's need of higher thermal insulation. They are typically composed of at least two glass panes separated by an internal space in which a vacuum has been generated and wherein discrete spacers are placed to prevent direct contact between the glass panes under atmospheric pressure. In addition to the insulation performance, the glass market seeks to add to the vacuum insulating glazing additional benefits such as safety, security, acoustic, fire resistance, decoration...
  • Such additional benefits are typically brought to the vacuum insulating glazing by a lamination process.
  • Nearly all of the lamination processes require pressurized autoclave finishing treatment at pressures above 10 atmospheres and temperatures up to 150°C in order to make acceptable quality laminated glass.
  • temperatures typically are elevated up to about 150°C to soften the interlayer, helping conform it to the surface of the glass substrate and flow the interlayer into areas where the substrate spacing may be uneven.
  • the mobile polymer chains of the interlayer develop adhesion with the glass. Elevated temperatures also accelerate the diffusion of residual air and/or moisture pockets from the glass/intermediate layer interface into the intermediate layer. Pressure appears to play two critical roles in the production of glass laminates.
  • pressure promotes the intermediate layer flow.
  • it suppresses bubbles formation that otherwise would be caused by the combined vapor pressure of water and air trapped in the system.
  • Water and air trapped in a pre-press i. e. , the layered assembly of unbonded glass and intermediate layer
  • heat accompanied with overwhelming pressure typically is applied to the assembly in an autoclave vessel, so as to counteract the expansion forces generated when air and water trapped within the pre-press are heated.
  • time ultimately plays an important role in lamination. While temperature and pressure can accelerate lamination, a certain critical time must always elapse in order to produce good quality laminated glass.
  • the pressurized treatment step is not compatible with the intrinsic nature of the vacuum insulating glazing: the discrete spacers placed between the two glass panes of the vacuum insulating glazing might not resist to the required pressure and/or micro cracks can appear on the glass panes around these discrete spacers, impairing substantially the mechanical strength of the vacuum-insulating glazing and its thermal performance.
  • W02020203550 discloses a method of laminating a transparent plate to a vacuum insulating glazing via an intermediate film.
  • the vacuum insulating glazing comprises a first glass panel, a second glass panel, a vacuum space located between the first and the second glass panels and a plurality of spacers made of resin.
  • the processing pressure to laminate together the vacuum insulating glazing and the transparent plate is smaller than the compressive strength of the plurality of spacers.
  • the skilled person in the art is looking for a novel lamination process to bring an additional superior benefit to a vacuum insulating glazing that allows to combine the benefits of the vacuum insulating glazing with the performance of a functional unit without impairing the mechanical and functional properties of the vacuum-insulating glazing.
  • the vacuum insulating unit should be designed to resist to the following loads :
  • the intrinsic load (L t ) being all stresses inherent to the vacuum insulating glazing design itself such as the mechanical resistance of the discrete spacers, the thickness of the glass panes, the atmospheric pressure,...;
  • the lamination load (U am ) being all stresses brought by a lamination process to the vacuum insulating glazing;
  • the use load (L use ) being all stresses caused by the conditions of use of the vacuum insulating glazing, such as the temperature difference between the inside and outside environment, the wind,...
  • the present invention relates to a process for the production of a laminated vacuum insulating glazing assembly that complies with the High Temperature Test of the norm ISO12543-4:2011.
  • the process comprises at least the following steps :
  • a processing pressure from 5.5 bar to 15.0 bar (5.5 bar > PP >15.0 bar ), preferably from 7.5 bar to 14.0 bar (7.5 bar > PP > 14.0bar), more preferably from 10.0 bar to 14.0 bar (10.0 bar > PP > 14.0 bar)
  • OP overpressure
  • the functional unit comprises at least 2 sheets, preferably at least one of the sheets is a glass sheet, more preferably the at least 2 sheets are glass sheets.
  • the sub-steps of the processing step 3) are achieved in the following processing order: the evacuation sub-step 3)a), the heating sub-step 3)b) and the pressurization sub-step 3)c); preferably the heating sub-step 3)b) and the pressurization sub-step 3)c) are started simultaneously.
  • the evacuation sub-step 3)a) of the processing step 3) is started at ambient temperature for a period of 5 min to 40 min, preferably from 10 min to 30 min, more preferably from 20 min to 30 min.
  • the releasing step 4) is achieved by releasing the heating first and then releasing the evacuation, preferably releasing the evacuation and pressurization together, preferably when the temperature of the VIG laminated assembly has reached 50°C to 60°C, more preferably ambient temperature.
  • the heating release step within step (4) is run at a rate of 1- 10°C/min, preferably 2-9°C/min, preferably 3-8°C/min, preferably 4-7°C/min, more preferably 5- 6°C/min, preferably in the temperature range of 130°C to 30°C.
  • the interunit polymer is an ethylene vinyl acetate and/or an ionomer, preferably is ethylene vinyl acetate.
  • the laminated vacuum insulating glazing assembly complies with the following load equation: U am £ [L t (SF-1)] + [L use x SF] wherein:
  • Li am is the lamination load being all stresses brought by a lamination process to the vacuum insulating glazing
  • L t is the intrinsic load being all stresses inherent to the vacuum insulating glazing design per se; SF is the security factor; and
  • L use is the use load being all stresses caused by the vacuum insulating glazing use conditions.
  • the interunit polymer is selected from the group consisting of ethylene vinyl acetate (EVA), cyclo polyolefin polymer (COP), autoclave-free polyvinyl butyral (Autoclave-free PVB), polyurethane (PU), and/or ionomers, preferably is selected from ethylene vinyl acetate (EVA) and/or autoclave-free polyvinyl butyral (Autoclave-free PVB).
  • EVA ethylene vinyl acetate
  • COP cyclo polyolefin polymer
  • Autoclave-free PVB autoclave-free polyvinyl butyral
  • PU polyurethane
  • ionomers preferably is selected from ethylene vinyl acetate (EVA) and/or autoclave-free polyvinyl butyral (Autoclave-free PVB).
  • the temperature of the heating sub-step b) of the Processing Step 3) ranges from 90°C to 150°C, preferably from 115°C to 150°C, preferably from 135°C to 145°C, more preferably is 140°C; preferably for a period ranging from 20 to 180 min, more preferably for 60 min.
  • the temperature of the heating sub-step b) of the processing step 3) ranges from 90°C to 150°C, preferably from 110°C to 120°C; preferably for a period ranging from 20 to 180 min, more preferably for 60 min.
  • the pressurizing sub-step 3)c) is done under an overpressure (OP) comprised between 2.0 bar and 4.5 bar (2.0 bar ⁇ OP ⁇ 4.5 bar), preferably between 2.0 bar and 4.0 bar (2.0 bar ⁇ OP ⁇ 4.0 bar), more preferably is 3.0 bar.
  • OP overpressure
  • the interunit polymer is an ethylene vinyl acetate and/or a cyclo polyolefin polymer, preferably is an ethylene vinyl acetate;
  • the temperature of the heating sub-step b) of the processing Step 3) ranges from 90°C to 150°C, preferably from 110°C to 145°C.
  • the processing step (3) comprises a further sub-step b*) before the sub-step b), of heating at an intermediate temperature ranging from 75°C to 95°C; preferably for a period of 10 to 60 min, more preferably from 15 min to 40 min.
  • the sub-steps of processing step (3) are achieved in the following processing order : a) Evacuating at room temperature for a period of 5 min to 40 min, preferably from 10 min to 30 min, more preferably from 20 min to 30 min; b*) Heating to an intermediate temperature ranging from 75°C to 95°C, preferably for a period of 10 to 60 min, more preferably from 15 min to 40 min; b) Heating to a temperature ranging from 110°C and 145°C, preferably from 130°C to 140°C for a period of 45 min to 300 min; c) Pressurizing under an overpressure (OP) equal to or lower than 2.0 bar (OP ⁇ 2.0bar), preferably equal to or lower than 1.5 bar (OP ⁇ 1.5 bar) preferably equal to or lower than 1.0 bar (OP ⁇ l.Obar), preferably equal to or lower than 0.5 bar (OP ⁇ 0.5 bar), more preferably under no overpressure of
  • OP overpressure
  • the interunit polymer is an ionomer and wherein the heating sub-step b) of the processing step (3) is run under a temperature from 90°C to 150°C, preferably from 130°C to 135°C; preferably for a period of 45 to 75 min, more preferably for 60 min.
  • the functional unit comprises at least 2 glass sheets laminated by a polyvinyl butyral polymer interlayer.
  • the functional unit comprises at least one structural plastic sheet, preferably a polycarbonate sheet and at least one glass sheet laminated by at least one polyvinyl butyral polymer interlayer and at least one polyurethane polymer interlayer.
  • the polyvinyl butyral polymer interlayer is an acoustic polyvinyl butyral polymer interlayer and/or the sheets are of different thicknesses.
  • the functional unit comprises at least 2 glass sheets separated by intumescent material, preferably hydrated alkali metal silicates.
  • the functional unit comprises further a peripheral spacer thereby creating a space between the 2 glass sheet to comprise the intumescent material, and wherein the heating sub-step b) of the processing step 3) is achieved under a temperature equal to or lower than 120°C, preferably equal to or lower than 110°C, preferably equal to or lower than 100°C, more preferably equal to or lower than 90°C.
  • the at least one of the first and/or second glass pane of the vacuum insulating glazing and/or at least one of the sheets of the functional unit is a heat strengthened glass, a thermally toughened safety glass, or a chemically strengthened glass.
  • the discrete spacers of the vacuum insulting glazing are made of metal material, quartz glass, a ceramic material and/or resin, preferably resin, more preferably polyimide resin.
  • Figure 1 shows a cross sectional view of a laminated vacuum insulating assembly according to one embodiment of the present invention, wherein the vacuum insulating glazing is laminated by an interunit polymer to a functional unit comprising 2 sheets.
  • the present invention relates to a production process of a "laminated vacuum insulating glazing assembly", herein after referred to as “laminated VIG assembly”, that comprises at least 2 separate units: a vacuum insulating glazing hereinafter referred to as "VIG” and a functional unit.
  • the VIG and functional unit are made separately, before being stacked together with an interunit polymer, into a pre-assembly that is laminated to form the laminated VIG assembly within the production process of the present invention.
  • the objective of the present invention is to produce a laminated vacuum-insulating glazing assembly that combines the excellent thermal insulation properties, the thinness and weight characteristics of a vacuum insulating glazing with some other functionality such as safety, security, acoustic, fire resistance, decoration... properties brought by a functional unit, without impairing the functional or mechanical properties of the vacuum insulating glazing unit, nor of the functional unit.
  • a further objective of the present invention is to obtain such superior performance while avoiding the overdesigns of the VIG, of the functional unit and/or of the entire laminated VIG assembly since overdesign brings unnecessary complexity, costs and may impair the laminated VIG assembly thermal performance, light transparency, weight, thickness, processability and transport...
  • the present invention is therefore addressing how a laminated VIG assembly should be designed and processed to support the different loads : the intrinsic load, the use load and the lamination load. It has been found that the laminated VIG assembly and its production process should be designed such that :
  • the laminated VIG assembly resists to the intrinsic load (Li nt ) and use load (L use ) both complemented with a certain design Security Factor: Design load > (Lint + Luse) x SF; and
  • the lamination load complies with the following equation : Liam ⁇ [Lint (SF-1)] + [Luse x SF]
  • the novel production process for the laminated VIG assembly can be performed in a single stage within a single industrial equipment and therefore is easy, simple, efficient and cost effective.
  • the laminated VIG assembly can comprise at least one VIG and at least one functional unit. Typically the laminated VIG assembly comprises one VIG and one functional unit. However, in some embodiments, the laminated VIG assembly can comprise more than one functional units added to the same side of the VIG or to both sides of the VIG. It could also be contemplated embodiments wherein the laminated VIG assembly comprise more than one VIGs with one or more functional units. All combinations of VIG(s) and functional unit(s) are herein encompassed.
  • the laminated VIG assembly comprises one VIG and one functional unit.
  • the laminated VIG assembly, the VIG and functional unit, as well as the panes of the VIG and the sheets of functional unit, extend along a plane, P, defined by a longitudinal axis, X, and a vertical axis, Z. Each of these elements have a thickness measured in the direction normal to the plane, P and have a surface extending along the place, P.
  • the present invention relates a process for making a laminated VIG assembly (1) comprising a VIG (2) and a functional unit (4) wherein the VIG and functional units have been made in separate steps.
  • Suitable interunit polymer to be used in the process of the present invention to laminate the functional unit and the VIG, to form the laminated VIG assembly of the present invention is a polymer that it capable of providing suitable mechanical adhesion by lamination at gentle overpressure.
  • the interunit polymer can be deposited onto the surface of the VIG and/or of the functional unit and is located between the vacuum insulating glazing and the functional unit thereby creating the pre-assembly.
  • suitable mechanical adhesion by lamination it is meant that the resulting laminated VIG assembly does comply with the High Temperature test (also known to as Bake test) within the durability section of the norm NBN EN ISO 12543 dated October 2011, Glass in building - Laminated glass and laminated safety glass - Part 4: Test methods for durability (ISO12543-4:2011)
  • overpressure it is meant an additional pressure over the atmospheric pressure.
  • suitable interunit polymers to be used in the process of the present invention are those providing proper mechanical adhesion between the functional unit and the VIG so that the resulting laminated VIG assembly does comply with the High Temperature Test ISO12543-4:2011 at an overpressure equal to or less than to 4.5bar (OP ⁇ 4.5bar), preferably equal to or less than to 4.0bar (OP ⁇ 4.0bar), preferably equal to or less than to 3. Obar (OP ⁇ 3. Obar), preferably equal to or less than to 2. Obar (OP ⁇ 2.
  • suitable interunit polymers to be used in the process of the present invention are selected from the group consisting of ethylene vinyl acetate (EVA), cyclo olefin polymers (COP), autoclave-free polyvinyl butyral (herein after referred to as Autoclave-free PVB), polyurethane (PU), ionomers like SentryGlasTM and combinations thereof.
  • EVA ethylene vinyl acetate
  • COP cyclo olefin polymers
  • Autoclave-free PVB autoclave-free polyvinyl butyral
  • PU polyurethane
  • SentryGlasTM ionomers like SentryGlasTM and combinations thereof.
  • the present invention relates to a process for the production of a laminated vacuum insulating glazing assembly that complies with the High Temperature Test of the norm IS012543- 4:2011, comprising at least the following steps :
  • OP overpressure
  • the functional unit herein has been processed at high pressure to provide superior benefits i.e. at a processing pressure (PP) from 5.5 bar to 15.0 bar (5.5 bar > PP >15.0 bar), preferably from 7.5 bar to 14.0 bar (7.5bar > PP >14.0bar), more preferably from 10.0 bar to 14.0 bar (lO.Obar > PP >14.0bar).
  • the functional unit preferably comprises at least 2 sheets, preferably at least one of the sheets is a glass sheet, more preferably the at least 2 sheets, are glass sheets.
  • the process of the present invention will be is free of a system of pressure rollers or calander (single or double) so that the overpressure is not achieved via a calander rolls, nip-rollers or any other roller, to avoid impairing the mechanical resistance and to maintain the integrity of the laminated VIG assembly.
  • the sub-steps of the processing Step 3) being the evacuation a), the heating b) and the pressurization c) can be started in any order.
  • the sub-steps of the processing step 3) are achieved in the following processing order: the evacuation sub-step 3)a), the heating sub-step 3)b) and the pressurization sub-step 3)c); preferably the heating sub-step 3)b) and the pressurization sub-step 3)c) are started simultaneously. It has been found that such preferred embodiment improves the evacuation of air at low temperature. Increasing the pressure will help the evacuation and the heating will cause edge sealing of the assembly preventing the air to return the structure.
  • the evacuation sub-step a) of the processing step 3) is started at ambient temperature for a period of 5 min to 40 min, preferably from 10 min to 30 min, more preferably from 20 min to 30 min before the heating sub-step 3)b) is started. It has been found that such preferred embodiment allows smooth air evacuation caught between the interunit polymer and the VIG and/or functional unit.
  • the releasing step 4) of the process of the present invention is achieved by releasing the heating first and then releasing the evacuation, preferably releasing the evacuation and pressurization together.
  • the temperature of the VIG laminated assembly has reached 50°C to 60°C, more preferably has reached ambient temperature. Indeed, cooling under vacuum is advantageous since it reduces the formation of air pockets and cloudiness in the laminated VIG assembly.
  • the heating release sub-step of step (4) of the process is run to achieve a diminution of l-10°C/min, preferably 2-9°C/min, preferably 3-8°C/min, preferably 4-7°C/min, more preferably 5-6°C/min, especially in the temperature range of 130°C to 30°C. It is indeed especially preferred in the embodiment wherein the interunit polymer used to form the laminated VIG unit is EVA, COP and/or ionomer.
  • the cooling step of the process of the present invention will preferably be run fast to avoid the appearance of haze. Convention cooling, by means of flow of cooling gas such as with a fan with or without a heat exchanger, or conduction cooling can be used.
  • the processes of the invention is achieved within a clean room to respect specific temperature and the low moisture level when required, as well as to avoid contamination.
  • suitable interunit polymers to be used in the process of the present invention are selected from the group consisting of ethylene vinyl acetate (EVA), cyclo olefin polymers (COP), autoclave-free polyvinyl butyral (herein after referred to as Autoclave-free PVB), Polyurethane (PU) and/or ionomers like SentryGlasTM.
  • EVA ethylene vinyl acetate
  • COP cyclo olefin polymers
  • Autoclave-free PVB autoclave-free polyvinyl butyral
  • PU Polyurethane
  • SentryGlasTM Polyurethane
  • the interunit polymer used to form the laminated VIG assembly is a autoclave-free PVB
  • an initial step of preconditioning the autoclave-free PVB to a specific relative humidity and temperature conditions is preferably added. This is preferred to obtain a good quality of the laminated VIG assembly after the lamination cycle and in particular avoid bubbles formation at the edges of the laminated VIG assembly.
  • Such autoclave-free PVB typically requires specific humidity conditions for the storage and processing such as to present a moisture content of less than 20%, preferably less the 15%, more preferably less than 10% and temperature between 15°C and 30°C, preferably between 18°C and 25°C.
  • the process of the present invention preferably comprises an initial step of preconditioning the autoclave-free PVB for at least lOhours, preferably at least 12 hours at ⁇ 10% relative humidity and 25°C.
  • the heating sub-step b) of the processing step 3) of the process of the present invention will preferably heat the pre-assembly at temperature of from 90°C to 150°C, preferably from 115°C to 150°C, preferably from 135°C to 145°C, more preferably is 140°C. Such is preferably achieved for a period ranging from 20 to 180 min, preferably for 60 min.
  • the sub-steps a) and b) of the processing Step (3) of the process of the present invention are achieved in the following processing order: a.
  • OP overpressure
  • the heating sub-step b) and pressurization sub-step c) of the processing step 3) are started simultaneously.
  • the heating sub-step b) of the processing step 3) of the process of the present invention will preferably heat the pre-assembly at temperature of from 90°C to 150°C, preferably from 110°C to 120°C. Such is preferably achieved for a period ranging from 20 to 180 min, more preferably for 60 min.
  • the sub-steps a) and b) of the processing Step (3) of the process of the present invention are achieved in the following processing order: a. Evacuating to a vacuum of minus O.lbar to minus lbar, preferably minus 0.5bar to minus lbar within the vacuum ring or vacuum bag; at room temperature for a period ranging from 5 min to 40 min, preferably from 10 min to 30 min, more preferably from 20 min to 30 min; b. Heating at a temperature between from 90°C and 150°C, preferably from 110°C to 120°C; preferably for a period ranging from 20 to 180 min, preferably for 60 min.
  • the pressurizing sub-step 3)c) is done under an overpressure (OP) comprised between 2.0 bar and 4.5 bar (2.0 bar ⁇ OP ⁇ 4.5 bar), preferably between 2.0 bar and 4.0 bar (2.0 bar ⁇ OP ⁇ 4.0 bar), more preferably is around 3.0 bar.
  • OP overpressure
  • the heating sub-step b) and pressurization sub-step c) of the processing step 3) are started simultaneously.
  • interunit polymer is a polyurethane (PU).
  • a preferred interunit polymer to form the laminated VIG assembly is selected from EVA and/or COP, more preferably is EVA.
  • the interunit polymer used to form the laminated VIG assembly is EVA and/or COP
  • specific care should be brought to the quality of the vacuum and the temperature profile.
  • the temperature range and its duration are easily adapted by person skilled in that art depending on the parameters of the laminated VIG assembly such as total thickness, glass thermal inertia, glass volume...
  • the heating sub-step b) of the processing step 3) of the process of the present invention will preferably comprise the initial step of pre-bonding the EVA interunit polymer by heating under a temperature between 75°C to 95°C, preferably for a period of 10 to 60 min, more preferably from 15 min to 40 min, to provide the elimination of the imprisoned air between the EVA or COP interunit polymer and the glass surface of the VIG and functional unit thanks to the obtained optimal viscosity of the EVA polymer or of the cyclo olefin polymer.
  • the heating sub-step b) of the processing Step 3) of the process of the present invention will preferably be run under a temperature of 90°C and 150°C, more preferably under a temperature of 110°C to 145°C.
  • the temperature ranges allow optimal cross-linking of the interunit polymer thereby optimal adhesion and durability.
  • the sub-steps of processing step (3) are achieved in in the following processing order : a) Evacuating to a vacuum of minus O.lbar to minus lbar, preferably minus 0.5bar to minus lbar within the vacuum ring or vacuum bag; at room temperature for a period of 5 min to 40 min, preferably from 10 min to 30 min, more preferably from 20 to 30min; b*) Heating to an intermediate temperature ranging from 75°C to 95°C; preferably for a period of 10 to 60 min, more preferably from 15 min to 40 min; b) Heating to a temperature ranging from 110°C and 145°C, preferably from 130°C to 140°C for a period of 45 min to 300 min.
  • OP overpressure
  • the heating sub-step b) and pressurization sub-step c) of the processing step 3) are started simultaneously.
  • interunit polymer is EVA and/or COP, preferably is EVA.
  • the interunit polymer used to form the laminated VIG assembly is an ionomer
  • special care should be brought to the storage of such ionomer in the humidity and temperature conditions recommended by the supplier, typically a relative humidity of less than or equal to 15%.
  • the process of the present invention wherein the interunit polymer is an ionomer preferably requires a degassing step and an edge pre-sealing step. Indeed, it is preferred that the air located at the VIG and functional unit interface with the interunit polymer is evacuated and then the edges are pre-sealed to avoid air penetration during the processing step of the process of the present invention.
  • Such initial degassing step can be achieved by a system of pressure rollers or calander (single or double), or by a vacuum process.
  • the vacuum process is herein preferred to avoid to impairing the mechanical resistance and maintaining the integrity of the laminated VIG assembly.
  • the heating sub-step b) of the processing step (3) is preferably run under a temperature from 90°C to 150°C, more preferably from 130°C to 135°C; preferably for a period of 45 to 75 min, more preferably for 60 min.
  • suitable interunit polymers to be used in the process of the present invention are selected from the group consisting of ethylene vinyl acetate (EVA), Cyclo olefin polymers (COP), autoclave-free polyvinyl butyral (herein after referred to as Autoclave-free PVB), polyurethane (PU), ionomers like SentryGlasTM and combinations thereof.
  • the interunit polymer is selected from the group consisting of ethylene vinyl acetate (EVA) and/or autoclave-free PVB.
  • the thickness of the interunit polymer is not particularly limited as long as the laminated VIG assembly does comply with the High Temperature Test ISO12543-4:2011 at an overpressure equal to or lower than 4.5 bar and as long as the transparency of the laminated VIG assembly is maintained, but may be for example, from 0.25 mm to 5 mm, preferably from 0.3 mm to 4 mm, preferably 0.3 to 3mm more preferably from 0.3mm to 2mm.
  • the interunit polymer is the autoclave-free PVB.
  • Suitable autoclave-free PVB is the PVB interlayer described in W02003/057478 by Eastman in the paragraphs [0020] to [0026] having a lowered water content below 0.35% by weight, a working range temperature of 120-150°C, preferably 135°C and allowing the lamination process to be achieved without the autoclave finishing treatment.
  • Such autoclave-autoclave-free PVB sheet is commercially available from Eastman , as "Saflex@"interlayer.
  • Other suitable autoclave-free PVB are commercially available from Kuraray : Trosifol ® PVB films are recommended for autoclave-free processing - particularly suitable is Trosifol ® HR.
  • the interunit polymer is a polyurethane (PU3 ⁇ 4.
  • PU3 ⁇ 4 Suitable commercially available PU is Krystalflex ® TPU Films (PE399 or PE900) by Huntsman, a high performance aliphatic polyether film intended for glass, polycarbonate, acrylic, CAB lamination applications and recommended for aerospace, transportation, security, and architectural markets. It provides low temperature impact resistance, excellent adhesion to glass, polycarbonate (PC) and polymethylmethacrylate (PMMA), moisture resistance, low lamination temperature compatible with PMMA and even lamination possible, even with complex surfaces with double degree of curvature.
  • PC polycarbonate
  • PMMA polymethylmethacrylate
  • the interunit polymer is ethylene vinyl acetate.
  • EVA is preferable because it is excellent in transparency and flexibility as well as it provides improved scattering resistance. Furthermore, it can also be used at lower process temperature.
  • Suitable commercially available EVAs are :
  • the EVA-based lamination films are Specifically Designed for 'Glass Lamination' wherein the DAYLIGHT EV200 series features very high performance in ageing, high static load capability, adhesion, flow and impact resistance, clarity, high light transmission and exceptional UV cut features.
  • EVA for use in the process of the present invention is the STRATO ® PLUS EVA from the Satinal supplier. It provides a completely natural and neutral-looking glass thanks to its high degree of transparency and UV protection without problems of distortions or air bubbles ensuring, at the same time, the highest degree of transparency even with low temperature lamination. Also suitable is Evalam Visual by the supplier HORNOS Pujol.
  • the interunit polymer is a cvclo olefin polymer.
  • COP are fully amorphous and highly transparent thermoplastic resins.
  • Commercially available COP are sold by the supplier Zeon under the name Zeonx ® . Those provide high transparency and low optical birefringence, low haze, extremely low water absorption and moisture permeation, high heat resistance, high mechanical stiffness, outstanding dimensional stability, good impact resistance and good moldability, high flowability, low mold shrinkage.
  • the interunit polymer is an ionomer.
  • lonomer contains no plasticizer and are based on ionoplast chemistry. Ionomer provides structural performance over a range of temperatures because of the unique chemistry lonomer is preferable thanks to its excellent mechanical properties, high strength, strong stability, moisture resistance lonomer laminated glass is colorless, transparent and anti-ultraviolet.
  • SentryGlas ® ionomer ionomer ionomer. It is up to 100 times stiffer and 5 times stronger than traditional interlayers, helping thinner laminates meet specified wind loads or structural requirements. Laminated glass made with stiff SentryGlas ® can tolerate high stress loads.
  • the functional unit has been processed in a separate process than the process for the production of the laminated VIG assembly. It has been processed at a processing pressure (PP) from 5.5 bar to 15.0 bar (5.5 bar > PP >15.0 bar), preferably from 7.5 bar to 14.0 bar (7.5 bar > PP > 14.0 bar), more preferably from 10.0 bar to 14.0 bar (10.0 bar > PP > 14.0 bar).
  • PP processing pressure
  • the functional unit (4) of the laminated VIG assembly of the present invention typically comprises at least 1 sheet and a functional layer (43), preferably at least 2 sheets (41, 42) separated by the functional layer (43).
  • a functional layer preferably at least 2 sheets (41, 42) separated by the functional layer (43).
  • at least one of the sheets is a glass sheet, more preferably the at least 2 sheets, are glass sheets.
  • the functional layer is typically a polymer interlayer and/or an intumescent material. Such functional unit provides therefore a functional benefit such safety, security, acoustic interlayer solar control and/or fire resistance, ...
  • the process of the present invention allows to design a laminated VIG assembly that provides a very efficient functional benefit in addition to the high thermal insulating properties of the VIG that would otherwise not be possible to obtain with a low pressure lamination process.
  • the present invention allows to add a functional unit that has been processed at high pressure to a VIG via a lamination process at low pressure. In addition, it has been found that such process at gentle overpressure maintains the performance and properties of the functional unit.
  • the functional unit can be prepared according to any of the known method in the art.
  • the functional unit is a safety and/or security functional unit.
  • safety and security glasses The main function of safety and security glasses is to absorb energy, such as caused by a blow from an object, without allowing penetration through the opening, thus minimizing damage or injury to the objects or persons within an enclosed area. Therefore, safety and/or security laminated units provide protection from injury due to accidental impact, protection from falls of through glass, and protection against break-ins and vandalism.
  • the safety and/or security functional unit can comprise two of more glass sheets, each separated by a polymer interlayer.
  • the skilled person will design the safety and/or security functional unit with a number of glass sheets ranging from 2 to 8, preferably from 2 to 4; with the thickness of the glass sheets ranging from 0.2mm, preferably from 0.5mm, preferably from 1mm, more preferably from 3mm to 12mm, preferably to 6 mm and with the thickness of the polymer interlayer ranging from 0.2mm, preferably from 0.35mm to 5mm, preferably 2.5mm.
  • Typical polymer interlayer to be used in such functional unit comprises a material selected from the group consisting ethylene vinyl acetate (EVA), polyisobutylene (PIB), polyvinyl butyral (PVB), polyurethane (PU), polyvinyl chlorides (PVC), polyesters, copolyesters, polyacetals, cyclo olefin polymers (COP), ionomers and/or an ultraviolet activated adhesive, and others known in the art of manufacturing glass laminates.
  • the polymer interlayer is polyvinyl butyral.
  • Reinforced acoustic insulation can be provided with a polymer interlayer with specific acoustic performance, such as specific PVBs.
  • Standard EN 356 defines eight performance levels based on tests representing the ability of laminated glass pane to resist throwing objects : levels P1A to P5A to comply with protection against impacts including vandalism and burglary attempts and levels P6B to P8B to comply with reinforced protection against burglary attempts.
  • a security functional unit has a P1A security level thanks to a laminated unit comprising two glass sheets of 3 mm each bonded by a polymer interlayer of polyvinyl butyral of 0.76mm thick.
  • Typical P2A level will be obtained with a security functional unit comprising a polyvinyl butyral interlayer of 0.76 mm thick and two glass sheets of 4mm each.
  • the thickness of the polyvinyl butyral interlayer can be increased to 1.52 mm thick for P4A, to 2.28 for P5A level.
  • the security functional unit typically have glass panes of thickness greater than 8mm.
  • the security functional unit to the used in the process of the present invention can comprise 2 glass sheets of 4mm each, or 6mm each or even 8mm each laminated by 0.76mm of PVB. Such units can be laminated through the process of the present invention to a VIG comprising typically two glass panes of a thickness of 4mm and/or 6mm.
  • the functional unit is an acoustic functional unit.
  • the VIG and/or the acoustic functional unit is made of glass panes / glass sheets of different thicknesses.
  • the asymmetric configuration helps to interrupt sound wave intrusion around critical sound frequency of the glass, it is meant resonant frequency that will cause glass to vibrate spontaneously.
  • Typical acoustic functional unit could also comprise two or more glass sheets separated by a polymer interlayer with specific acoustic performance, such as specific Polyvinyl Butyral components: e.g. Saflex ® acoustic PVB interlayer from Eastman or Trosifol ® acoustic PVB layer from Kuraray.
  • the acoustic functional unit comprises two glass sheets, preferably glass sheets of a different thickness ranging from 0.2mm, preferably from 0.5mm, from 1mm, from 3mm, from 4mm to 12mm, to 8mm, to 6mm.
  • the thickness of the polymer interlayer ranges from 0.2mm, preferably from 0.35mm to 5 mm, preferably to 3 mm.
  • the acoustic functional unit to the used in the process of the present invention can comprise 2 glass sheets of 4mm each, or 6mm each or even 8mm, preferably of different thicknesses, each laminated by 0.76mm of an acoustic PVB.
  • Such units can be laminated through the process of the present invention to a VIG comprising two glass panes of a typical thickness of 4mm and/or 6mm, preferably of the different thickness of 4mm and 6mm.
  • the functional unit is an anti-bullet or anti blast unit
  • Such anti-bullet and anti-blast functional unit typically comprise from 2 to 10 sheets, preferably from 2 to 7 sheets and at least corresponding layers of polymer interlayers.
  • the sheets are glass sheets or structural plastic sheets, preferably a polycarbonate sheets.
  • Typical polymer interlayer to be used in such application comprises a material selected from the group consisting ethylene vinyl acetate (EVA), polyisobutylene (PIB), polyvinyl butyral (PVB), polyurethane (PU), polyvinyl chlorides (PVC), polyesters, copolyesters, polyacetals, cyclo olefin polymers (COP), ionomers and/or an ultraviolet activated adhesive, and others known in the art of manufacturing glass laminates.
  • EVA ethylene vinyl acetate
  • PIB polyisobutylene
  • PVB polyvinyl butyral
  • PU polyurethane
  • PVC polyvinyl chlorides
  • polyesters copolyesters
  • polyacetals polyacetals
  • the polymer interlayer is polyurethane and/or polyvinyl butyral. Reinforced acoustic insulation can be provided with a polymer interlayer with specific acoustic performance, such as specific PVBs. Typical thicknesses for these polymer interlayer are from 0.2mm, preferably from 0.3 mm, more preferably 0.75mm to 4,5 mm preferably to 3.0 mm, more preferably to 1.75 mm.
  • the functional unit comprises at least one structural plastic sheet, preferably a polycarbonate sheet, more preferably a polycarbonate having a thickness of at most 2.0 mm and at least one glass sheet laminated by at least one polyvinyl butyral polymer interlayer and at least one polyurethane polymer interlayer.
  • the polymer interlayer has a thickness of at least 0.76mm.
  • the functional unit is special solar control functional unit
  • the functional unit can provide solar benefits that cannot be brought by the existing coating layers that are typically provided on the glass sheet.
  • Special solar functional interlayer polymer can provide protection from UV radiation, or allow the full natural spectrum of solar radiation for botanical application, or can absorb infrared (IR) light wavelength from the sun.
  • the solar functional unit typically comprises at least 2 glass sheets separated a solar functional interlayer polymer.
  • the solar functional unit will comprise from 2 to 8, preferably from 2 to 4 glass sheets; with the thickness of the glass sheets ranging from 0.2mm, preferably 0.5mm, preferably 1mm, more preferably 3mm to 12mm, preferably 6mm and with the thickness of the solar interlayer polymer ranging from 0.2mm, preferably 0.35mm to 5mm, preferably 2.5mm.
  • Suitable solar functional interlayer polymer are for example XIR Foil (metallic coating on PET laminated between layers of poly vinyl butyrate) encompassed within layers of PVB and the IR-Cut PVBs (Particles of indum tin oxide (ITO) or cesium tungsten oxide (ceWox) particles dispersed in a layer of poly vinyl butyrate).
  • XIR Foil metallic coating on PET laminated between layers of poly vinyl butyrate
  • IR-Cut PVBs Particles of indum tin oxide (ITO) or cesium tungsten oxide (ceWox) particles dispersed in a layer of poly vinyl butyrate.
  • ITO indum tin oxide
  • ceWox cesium tungsten oxide
  • the laminated VIG assembly produced by the process of the present invention will combine several functions : safety/security, acoustic, anti-bullet/anti-blast and/or special solar control, preferably safety/security and acoustic.
  • the functional unit comprises at least 2 glass sheets laminated by a polyvinyl butyral polymer interlayer.
  • the functional unit comprises at least one polycarbonate sheet and at least one glass sheet laminated by at least one polyvinyl butyral polymer interlayer and at least one polyurethane polymer interlayer.
  • the polyvinyl butyral polymer interlayer is an acoustic polyvinyl butyral polymer interlayer and/or the sheets are of different thicknesses.
  • the functional unit is a fire resistant functional unit.
  • the fire resistant functional unit typically comprises at least 2 sheets of glass separated by layers of intumescent materials.
  • the weight and thickness of fire resistant glazing may become high depending on the fire resistance performance level required, that defines the number of glass sheets and layers of intumescent material.
  • the layers of intumescent material are most often composed of hydrated alkali metal silicates.
  • Organic and/or inorganic hydrogels may alternatively be used.
  • the intumescent materials under the effect of heat, expand by forming a foam opaque to radiation, that keeps the glass walls in position even when the latter are fragmented under the effect of heat.
  • the use of hydrated alkali metal silicates in the manufacture of fire resistant functional unit is mainly carried out according to two distinct modes.
  • the first mode is known as the "drying process" since such fire resistant functional unit are typically processed in 2 stages comprising a first drying stage followed by an autoclave stage typically at temperature around 110°C and pressure around 11- 13bar.
  • the layer of intumescent material is obtained by applying solutions of these silicates over a glass pane and by carrying out a more or less prolonged drying step until a solid layer is obtained.
  • Several assemblies layer/glass pane can be piled up to obtain products having the desired fire resistance performances.
  • the last layer of intumescent material formed is typically covered by a final glass sheet.
  • the fire resistant functional unit comprises preferably from 2 to 9 glass sheets, more preferably from 3 to 5 glass sheets.
  • Such glass sheets are preferably from 3mm to 8mm thick and the layer of intumescent material is preferably from 1 to 8mm, preferably from 1 to 5mm, more preferably from 1mm to 4mm thick.
  • the fire resistant functional unit comprises 3 glass sheets and 2 layers of intumescent material.
  • such fire resistance unit will comprise a first glass sheets of 3mm + 1.5-2mm of intumescent material + a second glass sheet of 8mm + 1.5-2mm of intumescent material + a third glass sheet of 3mm.
  • such fire resistance unit can be laminated via an interunit polymer such as 0.76mm of EVA, to a VIG such as a VIG comprising 2 glass panes of 6mm each.
  • the fire resistant functional unit is comprises 5 glass sheets and 4 layers of intumescent material.
  • such fire resistance unit will comprise a first glass sheet of 3mm + 1.5-2mm of intumescent material + a second glass sheet of 3mm + 1.5-2mm of intumescent material + a third glass sheet of 8mm and again 2 glass sheets of 3mm separated by 1.5- 2mm of intumescent material.
  • such fire resistance unit can be laminated via an interunit polymer such as 0.76mm of EVA, to a VIG such as a VIG comprising 2 glass panes of 6mm each.
  • the fire resistant unit comprises 2 glass sheets and 1 layer of intumescent material being two glass panes of 3mm each separated by a layer of 1.5-2mm of intumescent material.
  • such fire resistance unit can be laminated via an interunit polymer such as 0.76mm of EVA, to a VIG such as a VIG comprising 2 glass panes of 6mm each.
  • the silicate solution is modified by the addition of products qualified as “hardeners”, “crosslinking agents” or in yet another way; to promote gelling of the silicate solution. They are chosen carefully so that, after their addition to the silicate solution, the latter, when left at rest, spontaneously hardens over a relatively short time into an intumescent layer, without being necessary to carry out a drying step.
  • the solution and its eventual additives is poured in a cavity between two glass panes.
  • the glass panes are joined at their periphery by a spacer which keeps them at a distance from each other, and which, with the two glass panes, defines a leaktight cavity in which the solution is poured.
  • the fire resistant functional unit comprises preferably from 2 to 4 glass sheets.
  • Such glass sheets are preferably from 3mm to 6mm thick and the layer of intumescent material is preferably from 3 to 30mm thick.
  • the fire resistant functional unit comprises 2 glass sheets and 1 layer of intumescent material.
  • such fire resistance unit will comprise a first glass sheet, preferably tempered, of 6mm + 4-6mm of intumescent material + a second glass sheet, preferably tempered, of 6mm.
  • a fire resistance unit can be laminated via an interunit polymer such as 0.76mm of EVA, to a VIG such as a VIG comprising 2 glass panes of 6mm each.
  • the heating sub-step b) of the processing step 3) is preferably achieved under a temperature equal to or lower than 120°C, preferably equal to or lower than 110°C, preferably equal to or lower than 100°C, more preferably equal to or lower than 90°C.
  • Such are the functional unit panes with electrochromic, thermochromic, photochromic or photovoltaic elements are also compatible with the present invention.
  • Other suitable electronic functional units to be used in the present invention are comprise LEDs (Light-emitting diodes) - either monochrome or RGB (red, green, blue) - are powered via a super-efficient, transparent conductive layer.
  • Further electronic functional unit can comprise display, antennae system able to receive or transmit electromagnetic signal, touch functions,...
  • those decorative functional unit comprising decorative inserts in paper, fabric, stone mimics film into typically a PVB frame.
  • the vacuum insulating glazing (2) of the laminated VIG assembly (1) produced by the process of the present invention typically comprise: a first glass pane (21) and a second glass pane (21); a set of discrete spacers (23) positioned between the first and second glass panes, maintaining a distance between the first and the second glass panes; a hermetically bonding seal (24) sealing the distance between the first and second glass panes over a perimeter thereof; an internal volume, V, defined by the first and second glass panes and the set of discrete spacers and closed by the hermetically bonding seal and wherein there is an absolute vacuum of pressure of less than 0.1 mbar.
  • the pressure inside the glazing unit is typically O.lmbar or less and generally at least one of the two glass panes is covered with a low-E coating.
  • the vacuum is thus created in the internal space by pumping the gases present into the internal space by means of a pump connected to the outer end of the glass tube.
  • EP1506945A1 for example describes the use of such a glass tube, which is welded in position in a through-hole provided in the main face of one of the glass sheets.
  • the temperature decreases in some extent and the glass panes come closer up to reaching the pillars which define the autoclave-free space.
  • the final space between the two glass panes is not greater than 2 mm.
  • the third step comprises a second heating period up to 465°C, allowing the pillars to adhere to the glass panes and also finalizing the hermetic sealing. This technique impairs the aesthetic appearance of the glass panel as no visible protrusion on the surface of one of the glass sheet is formed.
  • the discrete spacers are positioned between the first and second glass panes, maintaining a distance there between and forming an array having a pitch, l, comprised between 10 mm and 100 mm (10 mm ⁇ l ⁇ 100 mm).
  • pitch it is meant the interval between the discrete spacers.
  • the pitch is comprised between 20 mm and 80 mm (20 mm ⁇ l ⁇ 80 mm), more preferably between 20 mm and 50 mm (20 mm ⁇ l ⁇ 50 mm).
  • the array within the present invention is typically a regular array based on an equilateral triangular, square or hexagonal scheme, preferably based on a square scheme.
  • the discrete spacers can have different shapes, such as cylindrical, spherical, filiform, hourglass, C-shaped, cruciform, prismatic shape... It is preferred to use small pillars, i.e. pillars having in general a contact surface to the glass pane, defined by its external circumference, equal to or lower than 5 mm 2 , preferably equal to or lower than 3 mm 2 , more preferably equal to or lower than 1 mm 2 . These values may offer a good mechanical resistance whilst being aesthetically discrete.
  • Typical discrete spacers are made of a material having a strength endurable against the pressure and high-temperature making process of the VIG and hardly emitting gas after the glass pane is manufactured.
  • a material is preferably a hard material such as metal material, quartz glass or a ceramic material, in particular a metal material such as iron, tungsten, nickel, chrome, titanium, molybdenum, carbon steel, chrome steel, nickel steel, stainless steel, nickel-chromium steel, manganese steel, chromium-manganese steel, chromium-molybdenum steel, silicon steel, nichrome, duralumin or the like.
  • a ceramic material such as corundum, alumina, mullite, magnesia, yttria, aluminum nitride, silicon nitride or the like.
  • preferred discrete spacers for the VIG element of the laminated VIG assembly of the present invention are made of material of lower conductivity profile such as resins, preferably made of polyimide resin. In this case, it is possible to suppress the thermal conductivity of the spacer and heat is hardly transferred via the discrete spacers in contact with the first and the second glass sheets.
  • the internal volume of the VIG is closed with such hermetically bonding seal placed on the periphery of the glass panes around said internal space.
  • the hermetically bonding seal is impermeable to air or any other gas present in the atmosphere.
  • a first type of seal (the most widespread) is a seal based on a solder glass for which the melting point is lower than that of the glass of the glass panes of the glazing unit. Typically lower than 500°C, preferably lower 450°C, more preferably lower than 400°C. Examples are low melting point glass frits such as bismuth based glass frits, lead based glass frits, and vanadium based glass frits and mixtures thereof.
  • a second type of seal comprises a metal seal, for example a metal strip of a small thickness ( ⁇ 500 pm) soldered to the periphery of the glazing unit by way of a tie underlayer covered at least partially with a layer of a solderable material such as a soft tin-alloy solder.
  • a vacuum of absolute pressure less than 0.1 mbar, preferably less than O.Olmbar is created, within the internal volume, V, defined by the first and second glass panes and the set of discrete spacers and closed by the hermetically bonding seal within the VIG.
  • a getter may be used.
  • such a getter consists of alloys of zirconium, vanadium, iron, cobalt, aluminum, etc., and is deposited in the form of a thin layer (a few microns in thickness) or in the form of a block placed between the glass panes.
  • the panes of the VIG and the sheet(s) of the functional unit can be chosen among glass, metal sheets or structural plastic sheets, such as polycarbonate sheets for reduced weight, and preferably are chosen among float clear, extra-clear or colored glass.
  • the glass panes optionally be edge-ground for safety.
  • the panes of the VIG and the sheets of functional unit according to the invention are made of glass, typically soda-lime-silica glass, aluminosilicate glass or borosilicate glass; preferably soda-lime-silica glass. Textured, structured, printed glass are suitable.
  • the glass panes of the VIG and/or the sheets of the functional interunit are of different thickness. Furthermore, to improve the resistance to induced thermal stress in VIG in use wherein glass panes are subjected to temperature difference between exterior and interior environments, and therefore to reduce the L US e, it is also preferred that the glass panes of the VIG are of different thicknesses.
  • the glass panes / sheets are annealed glass panes / sheets.
  • prestressed glass it is meant herein a heat strengthened glass, a thermally toughened safety glass, or a chemically strengthened glass.
  • Heat strengthened glass is heat treated using a method of controlled heating and cooling which places one glass surface under compression and the other glass surface under tension. This heat treatment method delivers a glass with a bending strength greater than annealed glass but less than thermally toughened safety glass.
  • Thermally toughened safety glass is heat treated using a method of controlled heating and cooling which puts one glass surface under compression and the other glass surface under tension. Such stresses cause the glass, when impacted, to break into small granular particles instead of splintering into jagged shards. The granular particles are less likely to injure occupants or damage objects.
  • the chemical strengthening of a glass article is a heat induced ion-exchange, involving replacement of smaller alkali sodium ions in the surface layer of glass by larger ions, for example alkali potassium ions. Increased surface compression stress occurs in the glass as the larger ions "wedge" into the small sites formerly occupied by the sodium ions.
  • Such a chemical treatment is generally carried out by immerging the glass in an ion-exchange molten bath containing one or more molten salt(s) of the larger ions, with a precise control of temperature and time.
  • Aluminosilicate-type glass compositions such as for example those from the products range DragonTrail ® from Asahi Glass Co. or those from the products range Gorilla ® from Corning Inc., are also known to be very efficient for chemical tempering.
  • the composition for the glass pane / sheet comprises the following components in weight percentage, expressed with respect to the total weight of glass (Comp. A). More preferably, the glass composition (Comp. B) is a soda-lime-silicate-type glass with a base glass matrix of the composition comprising the following components in weight percentage, expressed with respect to the total weight of glass.
  • films such as low emissivity films, solar control films (a heat ray reflection films), anti-reflective films, anti-fog films, preferably a heat ray reflection film or a low emissivity film, can be provided on at least one of the glass pane of the VIG eventually on a glass sheet within the functional block.
  • Figure 1 illustrates a laminated VIG assembly (1) comprising a VIG (2) and a functional unit (4), laminated via a interunit polymer (3) by the process of the present invention.
  • the VIG (2) comprises a first glass pane (21) and a second glass pane (21) and a set of discrete spacers (23) positioned between the first and second glass panes, maintaining a distance between them. It is closed by a hermetically bonding seal (24) sealing the distance between the first and second glass panes over a perimeter thereof and so defined an internal volume, V wherein there is an absolute vacuum of pressure of less than 0.1 mbar.
  • a low emissivity film or a heat ray reflection film (5) is provided on the of inner face pane of the second glass pane of the VIG.
  • the functional unit (4) comprises a first glass sheet (41) laminated to a second glass sheet (42) by a interlayer polymer (43).
  • Example 1 Acoustic laminated VIG assembly
  • An acoustic functional unit comprising two standard soda-lime silica glass sheets (thickness of 8 mm each) and an acoustic polyvinyl butyral (thickness of 0,76mm) was produced with a standard lamination process with a nip-roller and an autoclave technology at temperature of 140°C and at a pressure of 12bar.
  • a VIG comprising 2 standard soda-lime silica glass panes (thickness of 6 mm each), pillars of resin material at a pitch of 20mm, sealed by a glass frit.
  • the thermal performance of such VIG (U) is 0.7W/m 2 K.
  • the acoustic laminated VIG assembly was produced by the following steps within an autoclave:
  • the acoustic laminated VIG assembly produced via the process of the present invention passes the High Temperature Test of the norm ISO12543-4:2011 and demonstrates the superior properties of maintaining the physical integrity of the VIG, especially no sign of micro cracks around pillars, nor compressed pillars; maintenance of the superior thermal performance; excellent acoustic property and so at a very limited thickness.
  • Table I shows that the acoustic laminated VIG assembly obtained by the process of the present invention provides excellent acoustic properties: better than the acoustic performance of the VIG alone and even better than a double glazing comprising the same two units of acoustic functional unit and VIG.
  • a security functional unit comprising 2 standard soda-lime silica glass sheets having each a thickness of 4mm, laminated by 6 layers of PVB of 0.38mm thickness each, was produced with a standard lamination process with a nip-roller and an autoclave technology at a temperature of 140°C and at a pressure of 12bar.
  • a VIG comprising 2 standard soda-lime silica glass panes (Thickness of 4 mm each), pillars of resin material at a pitch of 20mm, sealed by a glass frit. The thermal performance of such VIG (U) is 0.7 W/m 2 K.
  • the security laminated VIG assembly was produced by the following steps within an oven under no overpressure :
  • the security laminated VIG assembly produced via the process of the present invention passes the High Temperature Test of the norm ISO12543-4:2011 and demonstrates the superior properties of maintaining the physical integrality of the VIG, especially no sign of micro cracks around pillars, nor compressed pillars; maintenance of the superior thermal performance; and excellent security property.
  • Table II below shows that the laminated VIG assembly obtained by the process of the present invention provides excellent security properties.
  • the VIG made of 2 glass sheets of 4 mm each shows no mechanical performance according to the EN 356 norm.
  • the laminated VIG assembly produced by the process of the present demonstrates a P5A classification within the Security norm Ref. No. EN 356:1999 E.

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  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Joining Of Glass To Other Materials (AREA)
  • Securing Of Glass Panes Or The Like (AREA)
  • Laminated Bodies (AREA)
  • Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)

Abstract

La présente invention concerne un procédé de production d'un ensemble vitrage stratifié isolant sous vide (1) qui comprend au moins un vitrage isolant sous vide (2), au moins un polymère inter-unités (3) et au moins une unité fonctionnelle (4), lesquels ont été fabriqués séparément. L'unité fonctionnelle a été produite à une pression de traitement (PP) de 5,5 bars à 15,0 bars (5,5 bars ≥ PP ≥ 15,0 bars).Le procédé de production d'un ensemble vitrage stratifié isolant sous vide (1) qui satisfait à une épreuve sous haute température de la norme ISO12543-4:2011, comprend au moins les étapes suivantes : 1) l'empilage du vitrage isolant sous vide (2), du polymère entre unités (3) et de l'unité fonctionnelle (4) ; ce qui permet de créer un pré-ensemble ; 2) l'insertion du pré-ensemble dans un anneau à vide ou une poche à vide ; 3) le traitement du pré-ensemble en un ensemble VIG stratifié par au moins les sous-étapes suivantes : a. l'évacuation pour atteindre un vide de moins 0,1 bar à moins 1 bar, de préférence moins 0,5 bar à moins 1 bar, à l'intérieur de l'anneau à vide ou de la poche à vide, b. le chauffage du pré-ensemble à une température allant de 50 °C à 200 °C, de préférence de 75 °C à 175 °C, de préférence encore de 90 °C à 150°, c. la mise sous pression du pré-ensemble sous une surpression (OP) égale ou inférieure à 4,5 bars (OP ≤ 4,5 bars) ; et 4) le déblocage de l'évacuation 3)a), l'arrêt du chauffage 3)b) et la libération de la surpression 3)c).
PCT/EP2022/060369 2021-04-21 2022-04-20 Nouveau procédé de stratification pour produire un ensemble vitrage stratifié isolant sous vide WO2022223586A1 (fr)

Priority Applications (2)

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EP22723638.7A EP4326551A1 (fr) 2021-04-21 2022-04-20 Nouveau procédé de stratification pour produire un ensemble vitrage stratifié isolant sous vide
JP2023564107A JP2024516143A (ja) 2021-04-21 2022-04-20 ラミネート真空断熱グレージング組立体を製造するための新規なラミネーション法

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EP21169721 2021-04-21
EP21169721.4 2021-04-21

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4173668A (en) * 1974-12-03 1979-11-06 Bfg Glassgroup Fire-screening panel
WO2003057478A1 (fr) 2001-12-27 2003-07-17 Solutia Inc. Procede et appareil de stratification de verre
EP1506945A1 (fr) 2002-05-07 2005-02-16 Nippon Sheet Glass Co., Ltd. Panneau de verre translucide
EP2851351A1 (fr) 2012-05-18 2015-03-25 Panasonic Intellectual Property Management Co., Ltd. Procédé de fabrication de double vitrage
WO2019224363A1 (fr) * 2018-05-24 2019-11-28 Vkr Holding A/S Stratification d'unités vig
WO2019230220A1 (fr) 2018-05-30 2019-12-05 パナソニックＩｐマネジメント株式会社 Procédé de fabrication d'une unité panneau en verre
WO2020203550A1 (fr) 2019-03-29 2020-10-08 パナソニックＩｐマネジメント株式会社 Procédé de fabrication de stratifié et stratifié

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4173668A (en) * 1974-12-03 1979-11-06 Bfg Glassgroup Fire-screening panel
WO2003057478A1 (fr) 2001-12-27 2003-07-17 Solutia Inc. Procede et appareil de stratification de verre
EP1506945A1 (fr) 2002-05-07 2005-02-16 Nippon Sheet Glass Co., Ltd. Panneau de verre translucide
EP2851351A1 (fr) 2012-05-18 2015-03-25 Panasonic Intellectual Property Management Co., Ltd. Procédé de fabrication de double vitrage
WO2019224363A1 (fr) * 2018-05-24 2019-11-28 Vkr Holding A/S Stratification d'unités vig
WO2019230220A1 (fr) 2018-05-30 2019-12-05 パナソニックＩｐマネジメント株式会社 Procédé de fabrication d'une unité panneau en verre
WO2020203550A1 (fr) 2019-03-29 2020-10-08 パナソニックＩｐマネジメント株式会社 Procédé de fabrication de stratifié et stratifié

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"Glass in building - Laminated glass and laminated safety glass - Part 4: Test methods for durability", NBN EN ISO 12543, October 2011 (2011-10-01)

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