WO2022266478A1 - Glass product and method of producing glass product - Google Patents

Glass product and method of producing glass product Download PDF

Info

Publication number
WO2022266478A1
WO2022266478A1 PCT/US2022/034049 US2022034049W WO2022266478A1 WO 2022266478 A1 WO2022266478 A1 WO 2022266478A1 US 2022034049 W US2022034049 W US 2022034049W WO 2022266478 A1 WO2022266478 A1 WO 2022266478A1
Authority
WO
WIPO (PCT)
Prior art keywords
protective layer
glass
glass product
adhesive
product according
Prior art date
Application number
PCT/US2022/034049
Other languages
French (fr)
Inventor
Wladislaw BRONSTEIN
Philippe DULSKI
Markus Walter POHLEN
Original Assignee
Carlex Glass America, Llc
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 Carlex Glass America, Llc filed Critical Carlex Glass America, Llc
Publication of WO2022266478A1 publication Critical patent/WO2022266478A1/en

Links

Classifications

    • 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
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • 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
    • B32B1/00—Layered products having a non-planar shape
    • 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
    • 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
    • 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
    • B32B17/10293—Edge features, e.g. inserts or holes
    • 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
    • B32B17/10743—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 acrylate (co)polymers or salts thereof
    • 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
    • B32B17/10788—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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • 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
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • 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
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/306—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl acetate or vinyl alcohol (co)polymers
    • 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
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/308—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising acrylic (co)polymers
    • 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
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • 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
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B32B27/365—Layered products comprising a layer of synthetic resin comprising polyesters comprising polycarbonates
    • 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
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions
    • 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
    • B32B2255/00—Coating on the layer surface
    • B32B2255/10—Coating on the layer surface on synthetic resin layer or on natural or synthetic rubber layer
    • 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
    • B32B2255/00—Coating on the layer surface
    • B32B2255/20—Inorganic coating
    • 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
    • B32B2255/00—Coating on the layer surface
    • B32B2255/26—Polymeric coating
    • 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
    • B32B2255/00—Coating on the layer surface
    • B32B2255/28—Multiple coating on one surface
    • 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
    • B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
    • B32B2307/202—Conductive
    • 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
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/41—Opaque
    • 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
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/412—Transparent
    • 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
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/416—Reflective
    • 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
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/42—Polarizing, birefringent, filtering
    • 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
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/584—Scratch resistance
    • 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
    • B32B2307/70—Other properties
    • B32B2307/732—Dimensional properties
    • 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
    • B32B2315/00—Other materials containing non-metallic inorganic compounds not provided for in groups B32B2311/00 - B32B2313/04
    • B32B2315/08—Glass
    • 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
    • B32B2333/00—Polymers of unsaturated acids or derivatives thereof
    • 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
    • B32B2367/00—Polyesters, e.g. PET, i.e. polyethylene terephthalate
    • 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
    • B32B2369/00—Polycarbonates
    • 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
    • B32B2605/00—Vehicles
    • B32B2605/006—Transparent parts other than made from inorganic glass, e.g. polycarbonate glazings
    • 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
    • B32B2605/00—Vehicles
    • B32B2605/08—Cars

Definitions

  • the present disclosure is generally related to a glass product having a switchable film, a protective layer over the switchable film, and a low-emissivity coating on the protective layer.
  • the present disclosure is also generally related to a method of producing the glass product.
  • Switchable films functionally changing in light transmission under electrical power, may be used in automotive glazings to provide variably transparent windows.
  • the switchable films may be laminated in a glazing between two glass sheets, which may include deairing and autoclaving the switchable film between glass sheets.
  • the glass sheets may include a complex curvature shape.
  • the laminated process may be complex with a laminated functional film which may wrinkle when laminated between the glass sheets having complex curvature and may require electrical connections to be formed within the glazing.
  • the difficulty in producing such parts may lead to unacceptable parts being produced, which may be scrapped as unusable.
  • An alternative method for providing a switchable glazing may be needed to improve on these difficulties, among others.
  • a glass product including a glass piece; a first adhesive layer, a switchable film having variable light transmission adhered to the glass piece via the first adhesive layer; a second adhesive layer; a protective layer over the switchable film via the second adhesive layer; and includes low-emissivity characteristics.
  • the low-emissivity characteristics may be due to a low-emissivity coating, which may include indium tin oxide.
  • the protective layer may include a polymer film.
  • the polymer film may have a hard coating thereon.
  • the protective layer may include a glass sheet.
  • the glass product may be a sunroof.
  • the protective layer may include an area for capacitive switching of the switchable film.
  • the protective layer may have a thickness of 1.0 mm or less.
  • At least one of the first and the second adhesive layers may be a coating. In some embodiments of the present disclosure, at least one of the first and the second adhesive layers may include a pressure-sensitive adhesive, or a cured material of a photocurable, reaction-curable, or moisture-curable adhesive.
  • a sealant may be provided at an edge of the switchable film and the protective layer.
  • a method of producing the glass product of the present disclosure includes: forming the low-emissivity coating on the protective layer, adhering the protective layer to the switchable film via the second adhesive layer; and adhering the switchable film to the glass piece via the first adhesive layer.
  • the glass piece may have a curved shape, and the switchable film with the protective layer adhered thereto may be shaped prior to adhering to the glass piece.
  • At least one of the first and the second adhesive layers may include a photocurable, reaction-curable, moisture-curable, or pressure-sensitive adhesive, and the adhering at least one of the protective layer and the adhering the switchable film may be carried out at an ambient temperature.
  • FIG. 1 is a cross section illustrating a glass product, according to an exemplary embodiment of the present disclosure.
  • FIG. 2 is a cross section illustrating a glass product, according to an exemplary embodiment of the present disclosure.
  • FIGs. 3 A, 3B, and 3C illustrate steps of producing a glass product, according to an exemplary embodiment of the present disclosure.
  • FIG. 4A illustrates a step of producing a glass product, according to an exemplary embodiment of the present disclosure.
  • FIG. 4B is a cross section illustrating a glass product, according to an exemplary embodiment of the present disclosure. Detailed Description
  • This disclosure relates generally to a glass product, including: a glass piece; a first adhesive layer on the glass piece; a switchable film having variable light transmission adhered to the glass piece via the first adhesive layer, a second adhesive layer on the switchable film; a protective layer adhered to the switchable film via the second adhesive layer, wherein the protective layer has a low-emissivity characteristic.
  • the protective layer may include a low-emissivity coating to provide the low-emissivity characteristics.
  • Th also relates generally to a method of producing the glass product, including: forming the low-emissivity coating on the protective layer; adhering the protective layer to the switchable film via the second adhesive layer, and adhering the switchable film to the glass piece via the first adhesive layer.
  • the relatively soft interlayers may allow for change in shape of the switchable film, including wrinkling of the film. Applying the film instead to a harder glass surface may allow for prevention or limitation of such wrinkling even where the glass has a complex curvature shape.
  • Glass products described herein may include laminated or non-laminated glazings. Such glazings may be used, for example, in automotive vehicles as windows, such as windshields, sunroofs, back windows, or side windows.
  • the glass product may include a glass piece which may include a single glass sheet or a laminated glazing. The glass pieces may be bent to a desired shape.
  • a conventional laminated glazing may include a first glass sheet, an interlayer, and a second glass sheet laminated together.
  • the glass sheets may be bent to a desired shape prior to lamination with an interlayer therebetween.
  • the glass sheets may be a soda-lime silica glass. Glass bending may preferably occur by heat treatment from 550°C to 700°C, more preferably from
  • the interlayer may include an adhesive polymer sheet, which may include polyvinyl butyral (PVB) or ethylene vinyl acetate (EVA).
  • An interlayer may include an ionomer sheet in some glazings.
  • An inner glass sheet of the glazing faces a vehicle interior when installed, and an outer glass sheet faces a vehicle exterior when installed.
  • the glass product may be a sunroof.
  • a switchable film as used herein includes a functional layer for changing in transparency due to a connection to an electrical power source.
  • Switchable films may include, for example, a liquid crystal film, such as polymer dispersed liquid crystal (P DLC), polymer network liquid crystal (PNLC), or other liquid crystal films, a nanoparticle film, such as a suspended particle device (SPD), or electrochromic films.
  • a switchable film may include, for example, a first base layer, a first electrode on the first base layer, a functional layer, a second electrode, and a second base layer.
  • the second electrode may be formed on the second base layer.
  • the first and second electrodes may preferably include a metal oxide, such as indium tin oxide and may be the same or different material.
  • the first and second base layers may preferably include polymer films, such as polyethylene terephthalate (PET) and may be the same or different from each other.
  • the first and second electrodes may be independently connected to a power source. Some switchable films may be segmented so that the segments formed may be controlled independently of each other.
  • Segments may be formed by creating electrically isolated portions on one or both of the first and second electrodes.
  • the segments may each require electrical connection via a busbar.
  • the switchable film may connect to a power source via busbars formed on the electrodes.
  • the functional layer may include any suitable material and may include, for example, liquid crystal for
  • the switchable film When the switchable film is connected to an electric power source, the switchable film may switch from a dark or opaque state to a clear state, or vice versa.
  • a switchable film may be adhered to a glass piece, or glazing.
  • the switchable film may be adhered to the glass piece on an inner surface facing a vehicle interior when installed.
  • the switchable film may be adhered by an adhesive layer which may include, or be formed by, a hot-melt, thermosetting, photocurable, reaction-curable, moisture- curable, or pressure-sensitive adhesive.
  • the adhesive may include compounds based on acrylate, urethane, urethane acrylate, epoxy, epoxy acrylate, acryl, silicone, isocyanate, polyolefin. modified olefin, polypropylene, ethylene vinyl alcohol, vinyl chloride, chloroprene rubber, cyanoacrylate, polyamide, polyimide, polystyrene, polyvinyl butyral, ethylene vinyl acetate, or the like.
  • the preferable adhesive may be selected for suitable workability and adhesion properties, as well as for providing suitable optical transparency.
  • the protective layer may be applied over the switchable film with an adhesive that may be the same or different from the adhesive used to adhere the switchable film to the glass piece.
  • the protective layer may preferably have a thickness of 1 mm or less, more preferably 0.7 mm or less.
  • Th e protective layer may include a polymer layer or a glass layer.
  • the protective layer may include a polymer film, such as a polyethylene terephthalate (PET) film, a polycarbonate film, or an acrylic film, and the polymer film may have a hard coating, such as an acrylic coating, thereon. A hard coating may strengthen the film against physical and chemical damage.
  • the adhesive and protective layer may have a suitable optical appearance to be applied to a glass piece, which may preferably include a sunroof.
  • the glass layer may be thin and flexible.
  • the glass layer may preferably have a thickness of 1.0 mm or less, more preferably 0.7 mm or less, and may be chemically strengthened.
  • the protective layer may be larger in size than the switchable film so as to extend past the switchable film and completely cover it. Where all or part of the protective layer does not extend past the edge of the switchable film, the edges of the switchable film and the protective layer may be covered with a sealant. Where the protective layer does extend past the edge of the switchable film, the protective layer and the second adhesive may seal the edge of the switchable film. An additional sealant may be used in combination with the second adhesive.
  • the protective layer may have flexibility to conform to the shape of the glass piece and the switchable film on the glass piece.
  • the protective layer may have physical and chemical protective qualities. Particularly, the protective layer may have a haze value of less than 2% after the Taber test, as described in ECE
  • the protective layer may have a chemical resistance which may pass the chemical resistance test as defined in ECE R43 (updated May 2019).
  • the glass product disclosed herein may preferably farther include a low-emissivity (lowe) coating. Particularly, it may be beneficial to provide a low-e coating on a surface of the glass product facing a vehicle interior when installed. Such placement may maximize the effectiveness of the low-e coating and prevent heat dissipating from the glass product to the vehicle interior.
  • the low-e coating may preferably include a metal oxide, such as indium tin oxide.
  • the low-e coating may be formed by any suitable means, including vapor deposition processes.
  • the low-e coating may have an emissivity, which means a normal level of emission at 283 K. according to the standard
  • the protective layer may further include an area for capacitive switching of the switchable film, which may be connected to the switchable film.
  • the protective layer may have a multi-layer structure in this area which has a dielectric layer sandwiched by two conductive layers or a single layer structure which may include a laser-deleted portion of the low-e coating or a printed pattern on the protective layer.
  • a protective layer with such a structure may provide capacitive switching, or a touch panel.
  • An electrical connection from a power source to the capacitive switching may be formed in tins area. This area may be marked to indicate the position of the capacitive switching.
  • FIGs. 1 and 2 illustrates a glass product 100, 101, according to an exemplary embodiment of the present disclosure.
  • the glass product 100 includes a glass piece 110; a first adhesive layer 130 on the glass piece 110; a switchable film 10 having variable light transmission adhered to the glass piece 1 10 via the first adhesive layer 130; a second adhesive layer 140 on the switchable film 10; a protective layer 50, 51 adhered to the switchable film 10 via the second adhesive layer 140; and a low-e coating 60 on the protective layer 50, 51.
  • the protective layer 51 in the glass product 101 shown in FIG. 2 includes a polymer film 51a and a hard coating 51b on the polymer film 51a.
  • the glass product 100, 101 may be produced by a method including: forming the low-e coating 60 on the protective layer 50, 51; adhering the protective layer 50, 51 to the switchable film 10 via the second adhesive layer 140; and adhering the switchable film 10 to the glass piece
  • FIGs. 3A, 3B, and 3C illustrate steps of producing the glass product 100, according to an exemplary embodiment of the present disclosure.
  • a low-e coating 60 may be formed on a protective layer 50, as shown in FIG. 3A.
  • the protective layer 50 with the low-e coating 60 may then be adhered to a switchable film 10 via a second adhesive layer 140, as shown in FIG. 3B.
  • the switchable film 10 with the protective layer 50 may then be adhered to a glass piece 1 10 via a first adhesive layer 130, as shown in FIG. 3C.
  • FIG. 3C illustrate steps of producing the glass product 100, according to an exemplary embodiment of the present disclosure.
  • a low-e coating 60 may be formed on a protective layer 50, as shown in FIG. 3A.
  • the protective layer 50 with the low-e coating 60 may then be adhered to a switchable film 10 via a second adhesive layer 140, as shown in FIG. 3B.
  • the switchable film 10 with the protective layer 50 may then be adhered to a glass piece
  • a hard coating 51b may be formed on a polymer film 5 la to obtain the protective layer 51 prior to forming the low-e coating 60.
  • the glass piece 111 may have a curved shape. After adhering the protective layer 50, 51 to the switchable film 10 via the second adhesive layer 140, the switchable film 10 may be bent or curved prior to adhering to the glass piece 111.
  • FIG. 4 A illustrates a step of producing the glass product 102 shown in FIG. 4B, according to an exemplary embodiment of the present disclosure.
  • the switchable film 10 with the protective layer 50 may be bent or curved prior to adhering to the glass piece 1 11.
  • Adhering the switchable film 10 with the protective layer 50, 51 to the glass piece 110, 111 may be carried out by laminating the switchable film 10 and the glass piece 110, 111 with the first adhesive layer 130 therebetween, which may include laminating them via a vacuum, such as a vacuum bag degassing, or physically pressing them with a roller.
  • the adhering may preferably be processed in a vacuum or double-vacuum thermoforming process such that the first contact of adhesive layer 130 and the glass piece 110, 111 will be under vacuum, which may avoid air bubbles in the interface between the glass piece 110 and the adhesive layer 130.
  • At least one of the first and the second adhesive layers 130, 140 may be a coating. In other words, at least one of these adhesive layers 130, 140 may be formed by coating an adhesive.
  • the adhering may be carried out at an ambient temperature, i.e., about 10 to 40°C, when the first and the second adhesive layers 130, 140 include, or are formed by, a photocurable, reaction-curable, moisture-curable, or pressure-sensitive adhesive. Adhering at an ambient temperature may be preferable since it can avoid a damage of the switchable film 10 caused by heating.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Joining Of Glass To Other Materials (AREA)
  • Laminated Bodies (AREA)

Abstract

A glass product includes a glass piece, a first adhesive layer, a switchable film having variable light transmission adhered to the glass piece via the first adhesive layer, a second adhesive layer, and a protective layer on the switchable film, wherein the protective layer includes a low-emissivity coating.

Description

GLASS PRODUCT AND METHOD OF PRODUCING GLASS PRODUCT
Cross Reference to Related Application
[0001] This application claims priority to U.S. Provisional Application No. 63/211,692, filed on
June 17, 2021 , entitled “Glass Product,” the entire contents of which are incorporated by reference herein in their entirety.
Technical Field
[0002] The present disclosure is generally related to a glass product having a switchable film, a protective layer over the switchable film, and a low-emissivity coating on the protective layer. The present disclosure is also generally related to a method of producing the glass product.
Background
[0003] Switchable films, functionally changing in light transmission under electrical power, may be used in automotive glazings to provide variably transparent windows. The switchable films may be laminated in a glazing between two glass sheets, which may include deairing and autoclaving the switchable film between glass sheets. The glass sheets may include a complex curvature shape.
The laminated process may be complex with a laminated functional film which may wrinkle when laminated between the glass sheets having complex curvature and may require electrical connections to be formed within the glazing. The difficulty in producing such parts may lead to unacceptable parts being produced, which may be scrapped as unusable. An alternative method for providing a switchable glazing may be needed to improve on these difficulties, among others.
Summary
[0004] Disclosed herein includes a glass product, including a glass piece; a first adhesive layer, a switchable film having variable light transmission adhered to the glass piece via the first adhesive layer; a second adhesive layer; a protective layer over the switchable film via the second adhesive layer; and includes low-emissivity characteristics.
[0005] In some embodiments of the present disclosure, the low-emissivity characteristics may be due to a low-emissivity coating, which may include indium tin oxide.
[0006] In some embodiments of the present disclosure, the protective layer may include a polymer film. The polymer film may have a hard coating thereon.
[0007] In some embodiments of the present disclosure, the protective layer may include a glass sheet.
[0008] In some embodiments of the present disclosure, the glass product may be a sunroof.
[0009] In some embodiments of the present disclosure, the protective layer may include an area for capacitive switching of the switchable film.
[0010] In some embodiments of the present disclosure, the protective layer may have a thickness of 1.0 mm or less.
[0011] In some embodiments of the present disclosure, at least one of the first and the second adhesive layers may be a coating. In some embodiments of the present disclosure, at least one of the first and the second adhesive layers may include a pressure-sensitive adhesive, or a cured material of a photocurable, reaction-curable, or moisture-curable adhesive.
[0012] In some embodiments of the present disclosure, a sealant may be provided at an edge of the switchable film and the protective layer.
[0013] In another aspect of the present disclosure, a method of producing the glass product of the present disclosure includes: forming the low-emissivity coating on the protective layer, adhering the protective layer to the switchable film via the second adhesive layer; and adhering the switchable film to the glass piece via the first adhesive layer. [0014] In some embodiments of the present disclosure, the glass piece may have a curved shape, and the switchable film with the protective layer adhered thereto may be shaped prior to adhering to the glass piece.
[0015] In some embodiments of the present disclosure, at least one of the first and the second adhesive layers may include a photocurable, reaction-curable, moisture-curable, or pressure- sensitive adhesive, and the adhering at least one of the protective layer and the adhering the switchable film may be carried out at an ambient temperature.
Brief Description of the Drawings
[0016] The accompanying drawings, which are incorporated into and constitute a part of this specification, illustrate one or more example aspects of the present disclosure and, together with the detailed description, serve to explain their principles and implementations.
[0017] FIG. 1 is a cross section illustrating a glass product, according to an exemplary embodiment of the present disclosure.
[0018] FIG. 2 is a cross section illustrating a glass product, according to an exemplary embodiment of the present disclosure.
[0019] FIGs. 3 A, 3B, and 3C illustrate steps of producing a glass product, according to an exemplary embodiment of the present disclosure.
[0020] FIG. 4A illustrates a step of producing a glass product, according to an exemplary embodiment of the present disclosure.
[0021] FIG. 4B is a cross section illustrating a glass product, according to an exemplary embodiment of the present disclosure. Detailed Description
[0022] In the following description, for purposes of explanation, specific details are set forth in order to promote a thorough understanding of one or more aspects of the disclosure. It may be evident in some or all instances, however, that any aspects described below can be practiced without adopting the specific design details described below.
[0023] This disclosure relates generally to a glass product, including: a glass piece; a first adhesive layer on the glass piece; a switchable film having variable light transmission adhered to the glass piece via the first adhesive layer, a second adhesive layer on the switchable film; a protective layer adhered to the switchable film via the second adhesive layer, wherein the protective layer has a low-emissivity characteristic. The protective layer may include a low-emissivity coating to provide the low-emissivity characteristics. Th is disclosure also relates generally to a method of producing the glass product, including: forming the low-emissivity coating on the protective layer; adhering the protective layer to the switchable film via the second adhesive layer, and adhering the switchable film to the glass piece via the first adhesive layer.
[0024] Where a switchable film is laminated between interlayers in a laminated glazing, the relatively soft interlayers may allow for change in shape of the switchable film, including wrinkling of the film. Applying the film instead to a harder glass surface may allow for prevention or limitation of such wrinkling even where the glass has a complex curvature shape.
[0025] Glass products described herein may include laminated or non-laminated glazings. Such glazings may be used, for example, in automotive vehicles as windows, such as windshields, sunroofs, back windows, or side windows. The glass product may include a glass piece which may include a single glass sheet or a laminated glazing. The glass pieces may be bent to a desired shape.
A conventional laminated glazing may include a first glass sheet, an interlayer, and a second glass sheet laminated together. The glass sheets may be bent to a desired shape prior to lamination with an interlayer therebetween. Preferably, the glass sheets may be a soda-lime silica glass. Glass bending may preferably occur by heat treatment from 550°C to 700°C, more preferably from
580°C to 660°C. The interlayer may include an adhesive polymer sheet, which may include polyvinyl butyral (PVB) or ethylene vinyl acetate (EVA). An interlayer may include an ionomer sheet in some glazings. An inner glass sheet of the glazing faces a vehicle interior when installed, and an outer glass sheet faces a vehicle exterior when installed. The glass product may be a sunroof.
[0026] A switchable film as used herein includes a functional layer for changing in transparency due to a connection to an electrical power source. Switchable films may include, for example, a liquid crystal film, such as polymer dispersed liquid crystal (P DLC), polymer network liquid crystal (PNLC), or other liquid crystal films, a nanoparticle film, such as a suspended particle device (SPD), or electrochromic films. A switchable film may include, for example, a first base layer, a first electrode on the first base layer, a functional layer, a second electrode, and a second base layer. The second electrode may be formed on the second base layer. The first and second electrodes may preferably include a metal oxide, such as indium tin oxide and may be the same or different material. The first and second base layers may preferably include polymer films, such as polyethylene terephthalate (PET) and may be the same or different from each other. The first and second electrodes may be independently connected to a power source. Some switchable films may be segmented so that the segments formed may be controlled independently of each other.
Segments may be formed by creating electrically isolated portions on one or both of the first and second electrodes. The segments may each require electrical connection via a busbar. The switchable film may connect to a power source via busbars formed on the electrodes. The functional layer may include any suitable material and may include, for example, liquid crystal for
PDLC or PNLC or nanoparticles for SPD. When the switchable film is connected to an electric power source, the switchable film may switch from a dark or opaque state to a clear state, or vice versa.
[0027] As disclosed herein, a switchable film may be adhered to a glass piece, or glazing.
Particularly the switchable film may be adhered to the glass piece on an inner surface facing a vehicle interior when installed. The switchable film may be adhered by an adhesive layer which may include, or be formed by, a hot-melt, thermosetting, photocurable, reaction-curable, moisture- curable, or pressure-sensitive adhesive. The adhesive may include compounds based on acrylate, urethane, urethane acrylate, epoxy, epoxy acrylate, acryl, silicone, isocyanate, polyolefin. modified olefin, polypropylene, ethylene vinyl alcohol, vinyl chloride, chloroprene rubber, cyanoacrylate, polyamide, polyimide, polystyrene, polyvinyl butyral, ethylene vinyl acetate, or the like. The preferable adhesive may be selected for suitable workability and adhesion properties, as well as for providing suitable optical transparency.
[0028] It may be desirable to cover such a switchable film with a protective layer so as to protect it from an environment in the vehicle. The protective layer may be applied over the switchable film with an adhesive that may be the same or different from the adhesive used to adhere the switchable film to the glass piece. The protective layer may preferably have a thickness of 1 mm or less, more preferably 0.7 mm or less. Th e protective layer may include a polymer layer or a glass layer. For example, the protective layer may include a polymer film, such as a polyethylene terephthalate (PET) film, a polycarbonate film, or an acrylic film, and the polymer film may have a hard coating, such as an acrylic coating, thereon. A hard coating may strengthen the film against physical and chemical damage. The adhesive and protective layer may have a suitable optical appearance to be applied to a glass piece, which may preferably include a sunroof. Where the protective layer is a glass layer, the glass layer may be thin and flexible. The glass layer may preferably have a thickness of 1.0 mm or less, more preferably 0.7 mm or less, and may be chemically strengthened. In some embodiments, the protective layer may be larger in size than the switchable film so as to extend past the switchable film and completely cover it. Where all or part of the protective layer does not extend past the edge of the switchable film, the edges of the switchable film and the protective layer may be covered with a sealant. Where the protective layer does extend past the edge of the switchable film, the protective layer and the second adhesive may seal the edge of the switchable film. An additional sealant may be used in combination with the second adhesive. The protective layer may have flexibility to conform to the shape of the glass piece and the switchable film on the glass piece.
[0029] The protective layer may have physical and chemical protective qualities. Particularly, the protective layer may have a haze value of less than 2% after the Taber test, as described in ECE
R43 (updated May 2019). Further, the protective layer may have a chemical resistance which may pass the chemical resistance test as defined in ECE R43 (updated May 2019).
[0030] The glass product disclosed herein may preferably farther include a low-emissivity (lowe) coating. Particularly, it may be beneficial to provide a low-e coating on a surface of the glass product facing a vehicle interior when installed. Such placement may maximize the effectiveness of the low-e coating and prevent heat dissipating from the glass product to the vehicle interior. The low-e coating may preferably include a metal oxide, such as indium tin oxide. The low-e coating may be formed by any suitable means, including vapor deposition processes. The low-e coating may have an emissivity, which means a normal level of emission at 283 K. according to the standard
EN 12898, of 0.3 or less, preferably 0.2 or less. [0031 ] The protective layer may further include an area for capacitive switching of the switchable film, which may be connected to the switchable film. For example, the protective layer may have a multi-layer structure in this area which has a dielectric layer sandwiched by two conductive layers or a single layer structure which may include a laser-deleted portion of the low-e coating or a printed pattern on the protective layer. A protective layer with such a structure may provide capacitive switching, or a touch panel. An electrical connection from a power source to the capacitive switching may be formed in tins area. This area may be marked to indicate the position of the capacitive switching.
[0032] Each of FIGs. 1 and 2 illustrates a glass product 100, 101, according to an exemplary embodiment of the present disclosure. The glass product 100 includes a glass piece 110; a first adhesive layer 130 on the glass piece 110; a switchable film 10 having variable light transmission adhered to the glass piece 1 10 via the first adhesive layer 130; a second adhesive layer 140 on the switchable film 10; a protective layer 50, 51 adhered to the switchable film 10 via the second adhesive layer 140; and a low-e coating 60 on the protective layer 50, 51. The protective layer 51 in the glass product 101 shown in FIG. 2 includes a polymer film 51a and a hard coating 51b on the polymer film 51a.
[0033] The glass product 100, 101 may be produced by a method including: forming the low-e coating 60 on the protective layer 50, 51; adhering the protective layer 50, 51 to the switchable film 10 via the second adhesive layer 140; and adhering the switchable film 10 to the glass piece
110 via the first adhesive layer 130.
[0034] FIGs. 3A, 3B, and 3C illustrate steps of producing the glass product 100, according to an exemplary embodiment of the present disclosure. A low-e coating 60 may be formed on a protective layer 50, as shown in FIG. 3A. The protective layer 50 with the low-e coating 60 may then be adhered to a switchable film 10 via a second adhesive layer 140, as shown in FIG. 3B. The switchable film 10 with the protective layer 50 may then be adhered to a glass piece 1 10 via a first adhesive layer 130, as shown in FIG. 3C. In order to produce the glass product 101 shown in FIG.
2, a hard coating 51b may be formed on a polymer film 5 la to obtain the protective layer 51 prior to forming the low-e coating 60.
[0035] As shown in FIG. 4A, the glass piece 111 may have a curved shape. After adhering the protective layer 50, 51 to the switchable film 10 via the second adhesive layer 140, the switchable film 10 may be bent or curved prior to adhering to the glass piece 111.
[0036] FIG. 4 A illustrates a step of producing the glass product 102 shown in FIG. 4B, according to an exemplary embodiment of the present disclosure. When a glass piece 111 has a curved shape, the switchable film 10 with the protective layer 50 may be bent or curved prior to adhering to the glass piece 1 11.
[0037] Adhering the switchable film 10 with the protective layer 50, 51 to the glass piece 110, 111 may be carried out by laminating the switchable film 10 and the glass piece 110, 111 with the first adhesive layer 130 therebetween, which may include laminating them via a vacuum, such as a vacuum bag degassing, or physically pressing them with a roller. The adhering may preferably be processed in a vacuum or double-vacuum thermoforming process such that the first contact of adhesive layer 130 and the glass piece 110, 111 will be under vacuum, which may avoid air bubbles in the interface between the glass piece 110 and the adhesive layer 130.
[0038] At least one of the first and the second adhesive layers 130, 140 may be a coating. In other words, at least one of these adhesive layers 130, 140 may be formed by coating an adhesive. The adhering may be carried out at an ambient temperature, i.e., about 10 to 40°C, when the first and the second adhesive layers 130, 140 include, or are formed by, a photocurable, reaction-curable, moisture-curable, or pressure-sensitive adhesive. Adhering at an ambient temperature may be preferable since it can avoid a damage of the switchable film 10 caused by heating.
[0039] The above description of the disclosure is provided to enable a person skilled in the art to make or use the disclosure. Various modifications to the disclosure will be readily apparent to those skilled in the art, and the common principles defined herein may be applied to other variations without departing from the spirit or scope of the disclosure. Further, the above description in connection with the drawings describes examples and does not represent the only examples that may be implemented or that are within the scope of the claims.
[0040] Furthermore, although elements of the described aspects and/or embodiments may be described or claimed in the singular, the plural is contemplated unless limitation to the singular is explicitly stated. Additionally, all or a portion of any aspect and/or embodiment may be utilized with all or a portion of any other aspect and/or embodiment, unless stated otherwise. Thus, the disclosure is not to be limited to the examples and designs described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

Claims
1. A glass product, comprising: a glass piece; a first adhesive layer; a switchable film having variable light transmission adhered to the glass piece via the first adhesive layer, a second adhesive layer; and a protective layer over the switchable film via the second adhesive layer; wherein the protective layer includes a low-emissivity characteristics.
2. The glass product according to claim 1, wherein the protective layer includes a low- emissivity coating.
3. The glass product according to claim 2, wherein the low-emissivity coating includes indium tin oxide.
4. The glass product according to any of claims 1 to 3, wherein the protective layer includes a polymer film.
5. The glass product according to claim 4, wherein the polymer film has a hard coating thereon.
6. The glass product according to any one of claims 1 to 3, wherein the protective layer includes a glass sheet.
7. The glass product according to any one of claims 1 to 6, wherein the glass product is a sunroof.
8. The glass product according to any one of claims 1 to 7, wherein the protective layer includes an area for capacitive switching of the switchable film.
9. The glass product according to any one of claims 1 to 8, wherein the protective layer has a thickness of 1.0 mm or less.
10. The glass product according to any one of claims 1 to 9, wherein at least one of the first and the second adhesive layers is a coating.
11. The glass product according to any one of claims 1 to 10, wherein at least one of the first and the second adhesive layers include a pressure-sensitive adhesive, or a cured material of a photocurable, reaction-curable, or moisture-curable adhesive.
12. The glass product according to any one of claims 1 to 11, further comprising a sealant at an edge of the switchable film and the protective layer.
13. A method of producing the glass product according to any one of claims 4 to 12, comprising: forming the low-emissivity coating on the polymer film or the glass sheet; adhering the protective layer to the switchable film via the second adhesive layer; and adhering the switchable film to the glass piece via the first adhesive layer.
14. The method according to claim 13, wherein the glass piece has a curved shape, and the switchable film with the protective layer adhered thereto is shaped prior to adhering to the glass piece.
15. The method according to claim 13 or 14, wherein at least one of the first and the second adhesive layers includes a photocurable, reaction-curable, moisture-curable, or pressure-sensitive adhesive, and at least one of the adhering the protective layer and the adhering the switchable film is carried out at an ambient temperature.
PCT/US2022/034049 2021-06-17 2022-06-17 Glass product and method of producing glass product WO2022266478A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US202163211692P 2021-06-17 2021-06-17
US63/211,692 2021-06-17

Publications (1)

Publication Number Publication Date
WO2022266478A1 true WO2022266478A1 (en) 2022-12-22

Family

ID=82595111

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2022/034049 WO2022266478A1 (en) 2021-06-17 2022-06-17 Glass product and method of producing glass product

Country Status (1)

Country Link
WO (1) WO2022266478A1 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009004385A1 (en) * 2007-07-03 2009-01-08 Pilkington Group Limited Rf interference reduction for functional glazings
US20110170170A1 (en) * 2008-09-22 2011-07-14 Pilkington Group Limited Switchable glazings

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009004385A1 (en) * 2007-07-03 2009-01-08 Pilkington Group Limited Rf interference reduction for functional glazings
US20110170170A1 (en) * 2008-09-22 2011-07-14 Pilkington Group Limited Switchable glazings

Similar Documents

Publication Publication Date Title
EP2988930B1 (en) Laminated glazing
EP2342411B1 (en) Switchable glazings
EP3366467B1 (en) Functional glazings
WO2010032068A1 (en) Switchable glazing
US20050023264A1 (en) Edge sealing of a laminated transparency
MXPA06000604A (en) Functionalized security glazing.
RU2692339C1 (en) Method of producing multilayer glass with infrared-reflecting coating on film substrate
CN110831765B (en) Functional element with electrically controllable optical properties
WO2014174310A1 (en) Laminated glazing
CN110997316A (en) Functional element with electrically controllable optical properties
CN110636942B (en) Composite glass pane having electrically switchable functional elements in a thermoplastic interlayer
US11207868B2 (en) Method for producing a laminated pane
WO2022266478A1 (en) Glass product and method of producing glass product
CN115302888A (en) Electric heating glass and manufacturing method thereof
US20240278542A1 (en) Glass product and method for making a glass product
WO2022266482A1 (en) Glass product and method of producing glass product
CN113508031B (en) Connecting device with composite glass plate and functional element
CN113165370B (en) Method for producing a composite glass pane with a functional element
CN113767010A (en) Method for manufacturing composite glass plate with electrically controllable optical properties
WO2010032067A1 (en) Switchable glazings
US20210008843A1 (en) Method for producing a composite pane with a functional element having electrically controllable optical properties
WO2022266484A1 (en) Glass product and method of producing glass product
CN110958940A (en) Composite glass pane with functional element having electrically controllable optical properties with improved edge sealing
WO2024003875A1 (en) Variable light transmission glazing with complex shape and method of manufacture
CN115803299A (en) Glazing with metal-based functional layer

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 22743667

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 22743667

Country of ref document: EP

Kind code of ref document: A1