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US20190292086A1 - Manufacturing method for glass film with resin tape, and manufacturing method for glass film - Google Patents

Manufacturing method for glass film with resin tape, and manufacturing method for glass film Download PDF

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Publication number
US20190292086A1
US20190292086A1 US16/345,211 US201716345211A US2019292086A1 US 20190292086 A1 US20190292086 A1 US 20190292086A1 US 201716345211 A US201716345211 A US 201716345211A US 2019292086 A1 US2019292086 A1 US 2019292086A1
Authority
US
United States
Prior art keywords
glass film
resin tape
resin
marginal portions
manufacturing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US16/345,211
Other languages
English (en)
Inventor
Takeshi MURASHIGE
Junichi Inagaki
Kazuhito Hosokawa
Kota Nakai
Toshihiro Kanno
Yoshinori Hasegawa
Kaoru Mitsugi
Naohiro IKAI
Hiroki Mori
Yohei KIRIHATA
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Electric Glass Co Ltd
Nitto Denko Corp
Original Assignee
Nippon Electric Glass Co Ltd
Nitto Denko Corp
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 Nippon Electric Glass Co Ltd, Nitto Denko Corp filed Critical Nippon Electric Glass Co Ltd
Publication of US20190292086A1 publication Critical patent/US20190292086A1/en
Assigned to NITTO DENKO CORPORATION, NIPPON ELECTRIC GLASS CO., LTD. reassignment NITTO DENKO CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HASEGAWA, YOSHINORI, HOSOKAWA, KAZUHITO, IKAI, NAOHIRO, INAGAKI, JUNICHI, KANNO, Toshihiro, KIRIHATA, YOHEI, MITSUGI, KAORU, MORI, HIROKI, MURASHIGE, TAKESHI, NAKAI, Kota
Abandoned legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/52—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the way of applying the adhesive
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B17/00—Forming molten glass by flowing-out, pushing-out, extruding or drawing downwardly or laterally from forming slits or by overflowing over lips
    • C03B17/06—Forming 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
    • B29C65/481—Non-reactive adhesives, e.g. physically hardening adhesives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/74—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7858—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus characterised by the feeding movement of the parts to be joined
    • B29C65/7888—Means for handling of moving sheets or webs
    • B29C65/7894—Means for handling of moving sheets or webs of continuously moving sheets or webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/74—Joining plastics material to non-plastics material
    • B29C66/746—Joining plastics material to non-plastics material to inorganic materials not provided for in groups B29C66/742 - B29C66/744
    • B29C66/7465—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
    • 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
    • B32B17/10018—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 only one glass sheet
    • 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
    • B32B17/10366—Reinforcements of the laminated safety glass or glazing against impact or intrusion
    • 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
    • B32B3/10—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 a discontinuous layer, i.e. formed of separate pieces of material
    • B32B3/14—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 a discontinuous layer, i.e. formed of separate pieces of material characterised by a face layer formed of separate pieces of material which are juxtaposed side-by-side
    • B32B3/16—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 a discontinuous layer, i.e. formed of separate pieces of material characterised by a face layer formed of separate pieces of material which are juxtaposed side-by-side secured to a flexible backing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D57/00—Internal frames or supports for flexible articles, e.g. stiffeners; Separators for articles packaged in stacks or groups, e.g. for preventing adhesion of sticky articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D57/00—Internal frames or supports for flexible articles, e.g. stiffeners; Separators for articles packaged in stacks or groups, e.g. for preventing adhesion of sticky articles
    • B65D57/002—Separators for articles packaged in stacks or groups, e.g. stacked or nested
    • B65D57/003—Separators for articles packaged in stacks or groups, e.g. stacked or nested for horizontally placed articles, i.e. for stacked or nested articles
    • B65D57/004—Separators for articles packaged in stacks or groups, e.g. stacked or nested for horizontally placed articles, i.e. for stacked or nested articles the articles being substantially flat panels, e.g. wooden planks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
    • B65D85/67—Containers, packaging elements or packages, specially adapted for particular articles or materials for web or tape-like material
    • B65D85/671—Containers, packaging elements or packages, specially adapted for particular articles or materials for web or tape-like material wound in flat spiral form
    • B65D85/672—Containers, packaging elements or packages, specially adapted for particular articles or materials for web or tape-like material wound in flat spiral form on cores
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H39/00—Associating, collating, or gathering articles or webs
    • B65H39/16—Associating two or more webs
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B17/00—Forming molten glass by flowing-out, pushing-out, extruding or drawing downwardly or laterally from forming slits or by overflowing over lips
    • C03B17/06—Forming glass sheets
    • C03B17/064—Forming glass sheets by the overflow downdraw fusion process; Isopipes therefor
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B25/00—Annealing glass products
    • C03B25/04—Annealing glass products in a continuous way
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B33/00—Severing cooled glass
    • C03B33/02—Cutting or splitting sheet glass or ribbons; Apparatus or machines therefor
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B33/00—Severing cooled glass
    • C03B33/02—Cutting or splitting sheet glass or ribbons; Apparatus or machines therefor
    • C03B33/023—Cutting or splitting sheet glass or ribbons; Apparatus or machines therefor the sheet or ribbon being in a horizontal position
    • C03B33/0235—Ribbons
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B33/00—Severing cooled glass
    • C03B33/09—Severing cooled glass by thermal shock
    • C03B33/091—Severing cooled glass by thermal shock using at least one focussed radiation beam, e.g. laser beam
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
    • C03C17/28—Surface treatment of glass, not in the form of fibres or filaments, by coating with organic material
    • C03C17/32—Surface treatment of glass, not in the form of fibres or filaments, by coating with organic material with synthetic or natural resins
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J201/00—Adhesives based on unspecified macromolecular compounds
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
    • 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
    • B32B2329/00—Polyvinylalcohols, polyvinylethers, polyvinylaldehydes, polyvinylketones or polyvinylketals
    • 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
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/17—Nature of material
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B17/00—Forming molten glass by flowing-out, pushing-out, extruding or drawing downwardly or laterally from forming slits or by overflowing over lips
    • C03B17/06—Forming glass sheets
    • C03B17/067—Forming glass sheets combined with thermal conditioning of the sheets
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C2218/00—Methods for coating glass
    • C03C2218/30—Aspects of methods for coating glass not covered above
    • C03C2218/355—Temporary coating

Definitions

  • the present invention relates to a manufacturing method of glass film with resin tape, and a glass film manufacturing method using the same.
  • the present invention relates to a manufacturing method of glass film with resin tape capable of stably manufacturing a glass film with resin tape, i.e., an intermediate product of a glass film, while preventing crack development due to wrinkles and reducing the load of a marginal portion removal step, and a glass film manufacturing method using the same.
  • a glass film has flexibility, so that it is capable of being wound in the form of a roll, and thus processed through the roll-to-roll process.
  • a method of subjecting a glass film to processing to form a polarizer, a transparent electrode or the like thereon through the roll-to-roll process and others.
  • U.S. Pat. No. 8,525,405B discloses a method of producing a display having a flexible glass layer, through the roll-to-roll process.
  • sheet glasses including a glass film are produced by forming molten glass into a flat and smooth sheet shape, and annealing (slowly cooling) or cooling the resulting shaped body.
  • a technique to form molten glass into a sheet shape there has been known: a float process which comprises forming molten glass floated on liquid tin, into a sheet shape, by gradually drawing the molten glass in a horizontal direction; a slot downdraw process which comprises forming molten glass into a sheet shape by gradually drawing the molten glass from a sheet-shaped opening (slot) in a vertical direction; an overflow downdraw process which comprises causing molten glass to overflow from a forming trough and then guiding the overflowed glass downwardly, and others.
  • JP 2015-140280A describes a technique of cutting and removing the marginal portions by a laser after smoothing out the wrinkles arising in the glass film. According to this document, it is described that, by performing the laser cutting after smoothing out the wrinkles, it becomes possible to stably remove the marginal portions.
  • Patent Document 1 U.S. Pat. No. 8,525,405B
  • Patent Document 2 JP 2010-132531A
  • Patent Document 3 JP 2015-140280A
  • the present invention made to solve the above problems relates to a manufacturing method of glass film with resin tape comprising: a forming step of continuously forming an elongated glass film having marginal portions having marginal portions in width-directional opposite edge regions thereof from molten glass, wherein the glass film having marginal portions has the marginal portions, and an effective portion formed in a width-directional central region of the glass film having marginal portions; an annealing step of annealing the glass film having marginal portions; a resin tape forming step of continuously forming resin tapes on the glass film having marginal portions at positions adjacent to and away by a given distance from the respective marginal portions, in a length direction of the glass film having marginal portions; and a marginal portion removal step of continuously removing each of the marginal portions from the glass film having marginal portions, at a position between the marginal portion and a corresponding one of the resin tapes, or at a given width-directional position within the resin tape, to form a glass film with resin tape.
  • the resin tape forming step comprises a resin tape attaching step of attaching the resin tape to a surface of the glass film having marginal portions, while continuously feeding the resin tape from a resin tape roll.
  • the resin tape attaching step includes applying an adhesive to an interface between the resin tape and the glass film having marginal portions.
  • adheresive includes a so-called “pressure-sensitive adhesive”.
  • the resin tape forming step may comprise a resin solution application step of continuously applying a resin solution to a surface of the glass film having marginal portions, in a tape-like configuration.
  • the resin solution is a solution of a thermo-curable resin or a photo-curable resin.
  • the resin tape forming step includes forming the resin tapes at positions away from edge sides of the glass film having marginal portions by 40% or less of a width of the glass film having marginal portions.
  • the forming step includes using one selected from the group consisting of a float process, an overflow downdraw process, and a slot downdraw process.
  • the effective portion has a thickness of 20 to 500 ⁇ m.
  • the manufacturing method of glass film with resin tape of the present invention comprises a winding step of winding the glass film with resin tape in the form of a roll.
  • the resin tape forming step includes continuously forming the resin tapes on only one surface of the glass film having marginal portions, and the winding step includes winding the glass film having marginal portions in the form of a roll, in a posture where the one surface of the glass film with resin tape faces outwardly.
  • the winding step includes continuously feeding a protective sheet from a protective sheet roll, and winding the glass film with resin tape in the form of a roll, together with the protective sheet.
  • the present invention preferably comprises: a step of obtaining a glass film with resin tape using the above manufacturing method of glass film with resin tape; and a resin tape removal step of continuously removing, from the glass film with resin tape, width-directional opposite edge regions of the glass film with resin tape on which the resin tapes are formed, thereby forming a glass film.
  • the glass film manufacturing method of the present invention comprises a winding step of winding the glass film in the form of a roll.
  • the glass film manufacturing method of the present invention comprises a step of cutting the glass film in a width direction thereof.
  • the manufacturing method of glass film with resin tape and the glass film manufacturing method of the present invention make it possible to stably manufacture a glass film with resin tape (typically, a resin tape-attached glass roll), i.e., an intermediate product of a glass film, and a glass film (typically, a glass roll or a sheet-shaped glass film), while preventing crack development due to wrinkles and reducing the load of the continuous marginal portion removal step.
  • a glass film with resin tape typically, a resin tape-attached glass roll
  • a glass film typically, a glass roll or a sheet-shaped glass film
  • FIG. 1 is a process flow chart of a manufacturing method of glass film with resin tape according to the present invention.
  • FIG. 2 is a schematic diagram for explaining one example of the overall process of the manufacturing method of glass film with resin tape according to the present invention.
  • FIG. 3( a ) is a schematic diagram for explaining the details of one example of a forming step in the manufacturing method of glass film with resin tape according to the present invention
  • FIG. 3( b ) is a sectional view taken along the line A-A in FIG. 3( a ) .
  • FIGS. 4( a ) to 4( c ) are schematic diagrams for explaining respective steps of the manufacturing method of glass film with resin tape according to the present invention.
  • FIG. 5 is a schematic diagram for explaining the details of one example of a glass film winding step in the manufacturing method of glass film with resin tape according to the present invention.
  • FIG. 6 is a schematic diagram for explaining one example of a glass film manufacturing method according to the present invention.
  • FIG. 1 is a process flow chart of a manufacturing method of glass film with resin tape according to the present invention.
  • the manufacturing method of glass film with resin tape according to the present invention comprises a forming step (P 1 ), an annealing step (P 2 ), a resin tape forming step (P 3 ), and a marginal portion removal step (P 4 ), and may further comprises a winding step (P 5 ). Specific examples of these steps will be described in detail below.
  • FIG. 2 is a schematic diagram for explaining one example of the overall process of a manufacturing method for a glass film with resin tape Ga, according to the present invention.
  • FIGS. 3( a ) and 3( b ) are schematic diagrams for explaining the details of one example of a forming step in the manufacturing method for the glass film with resin tape Ga, according to the present invention.
  • the forming step (P 1 ) is a step of continuously forming an elongated, glass film having marginal portions Gc from molten glass into a given shape having two marginal portions Gb, respectively, in width-directional opposite edge regions thereof.
  • examples of a raw material for the molten glass include soda-lime glass, borosilicate glass, aluminosilicate glass, and quartz glass.
  • examples thereof include alkali-free glass, and low-alkali glass.
  • alkali-free glass is used. This is because alkali-free glass is excellent in strength and chemical durability.
  • the molten glass is used in a molten state after heating at an arbitrary appropriate temperature (1400° C. to 1700° C.).
  • Examples of a technique to continuously form the molten glass into a film shape include an overflow downdraw process, a slot downdraw process, and a float process. Even by employing any one of the above processes, it is possible to continuously form the elongated, glass film having marginal portions Gc into a given shape having the marginal portions Gb in the respective width-directional opposite edge regions thereof. It is to be understood that the present invention is not limited to the above forming processes as long as the marginal portions Gb are formed in the respective width-directional opposite edge regions of the glass film having marginal portions Gc.
  • the overflow downdraw process is preferable as a technique to continuously form a thinned glass film.
  • a glass film obtainable through this process has a feature that each surface thereof has excellent smoothness, i.e., this process is less likely to cause in-plane defects, and suitable for continuously forming a glass film.
  • a forming apparatus 10 has a forming region 10 A in which a forming body 11 having a wedge-shaped outer surface in vertical section is disposed.
  • molten glass melted in a non-depicted melting kiln
  • the molten glass overflows from a top opening of the forming body 11 .
  • forming of the molten glass into a glass film ribbon Gd is started such that the overflowed molten glass flows downwardly along opposite lateral surfaces of the forming body 11 having a wedge shape in vertical section, and merges at a lower end of the forming body 11 .
  • width-directional opposite edge regions of the glass film ribbon Gd are held, respectively, by two cooling roller pairs 12 , so that two thick marginal portions Gb (see FIG. 3( b ) ) are formed, respectively, in the width-directional opposite edge regions of the glass film ribbon Gd.
  • the marginal portions Gb it is possible to suppress aggregation due to surface tension and thermal shrinkage, and promote thinning and curing while maintaining the form of a film. This makes it possible to form a glass film having marginal portions Gc into a given shape.
  • metal roller pairs are typically used as the cooling roller pairs 12 , the present invention is not limited thereto.
  • the annealing step (P 2 ) is a step of annealing the glass film having marginal portions Gc.
  • a plurality of sets of two annealer roller pairs 13 and a non-depicted heater are arranged in an annealing region 10 B.
  • the annealing region 10 B is set such that a given temperature gradient is formed by the non-depicted heater, so that, as the glass film having marginal portions Gc flows downwardly along the annealing region 10 B, the temperature thereof is gradually lowered and thus thermal strain generated thereinside is removed.
  • the annealer roller pairs 13 in the annealing region 10 B are made of an inorganic material comprising ceramic fibers and a binder.
  • the present invention is not limited thereto. Further, all the annealer roller pairs 13 need not hold the glass film having marginal portions Gc, but part of the annealer roller pairs 13 may be an idle roller pair.
  • each of the edge regions which are being held is maintained thick (as the marginal portion Gb), whereas an inward thinned region (thinned portion Ge) is stretched in a flow direction, in principle.
  • a difference in size (area difference) between the marginal portion Gb and the thinned portion Ge occurs. This is assumed to cause generation of wrinkles Gf in the thinned portion Ge.
  • the marginal portions Gb are removed, the wrinkles Gf in the thinned portion Ge are relieved, and thus it becomes possible to form a glass film with resin tape or glass film and continuously wind it.
  • the resin tape forming step is roughly classified into the following two processes. Specifically, (1) process of attaching at least two tape-shaped resin films onto a surface of the glass film having marginal portions, while continuously feeding the tape-shaped resin films (resin tape attaching step), and (ii) continuously applying resin in solution form to a surface of the glass film, and curing the resin to form at least two tape-shaped resin films on the surface (resin solution application step).
  • Examples of a laminating method includes a technique of laminating tape-shaped resin films (resin tapes), while forming resin films into a tape shape, and a technique of laminating resin films each preliminarily formed into a tape shape.
  • a technique to develop adhesiveness between each of the tape-shaped resin films and the glass film having marginal portions an adhesive or pressure-sensitive adhesive is preferably interposed between the resin tape and the glass film having marginal portions.
  • each of the resin tapes may be thermally fused before or after lamination of the resin tape to develop adhesiveness with respect to the glass, based on an anchor effect.
  • the lamination is performed while the resin tapes each wound into a roll are continuously unrolled and fed, and an adhesive or pressure-sensitive adhesive is interposed between each of the resin tape and the glass.
  • the resin tapes are arranged and laminated at positions adjacent to and away by a given distance from the respective marginal portions of the glass film having marginal portions.
  • Examples of a material for the resin tapes include polyethylene, polyvinyl chloride, polyethylene terephthalate, polyvinylidene chloride, polypropylene, polyvinyl alcohol, polyester, polycarbonate, polystyrene, polyacrylonitrile, an ethylene vinyl acetate copolymer, an ethylene-vinyl alcohol copolymer, an ethylene-methacrylic acid copolymer, nylon, cellophane, and a silicone resin.
  • the resin tape may be formed as a mixture or a laminate thereof. From an industrial viewpoint, polyethylene terephthalate resin is preferable.
  • a production method for resin tapes made of the above materials it is possible to use an inflation process, a T-die process, a melt casting process, a calender process, etc. From an industrial viewpoint, it is preferable to produce a resin tape roll by, after forming a wide-width resin film through one of the above processes, slitting the wide-width resin film into a given width, and winding the resulting tape-shaped resin film.
  • the resin film laminated through an adhesive or pressure-sensitive adhesive are preferably subjected to cross-linking reaction, and stabilized, using a device for radiating ultraviolet light or electron beam.
  • a device for radiating ultraviolet light or electron beam In this way, the glass film having marginal portions and the resin tapes are strongly fixed together, so that it can be expected to enhance the effect of suppressing crack development in the glass.
  • a technique to interpose an adhesive or pressure-sensitive adhesive between each of the resin tapes and the glass film having marginal portions may comprise: dropping or continuously applying liquid adhesive or pressure-sensitive adhesive to one or each of the resin tape and the glass film having marginal portions; or laminating a sheet-shaped adhesive film or pressure-sensitive adhesive film to the resin tape or the glass film having marginal portions successively to or currently with the lamination of the resin tape.
  • a roll formed by winding a laminate of a resin tape preliminarily applied with an adhesive or pressure-sensitive adhesive and a release film (separator) attached onto the adhesive or pressure-sensitive adhesive may be used.
  • FIGS. 4( a ) to 4( c ) are schematic diagrams for explaining respective steps of the manufacturing method of glass film with resin tape according to the present invention.
  • FIG. 4( a ) , FIG. 4( b ) and FIG. 4( c ) are, respectively, a sectional view taken along the line B-B in FIG. 2 , a sectional view taken along the line C-C in FIG. 2 , and a sectional view taken along the line D-D in FIG. 2 .
  • Each of two resin tapes 21 is continuously fed from a resin tape roll 20 . Then, after applying an adhesive (not depicted) to each of the resin tapes 21 , the resin tapes 21 are laminated to the glass film having marginal portions Gc at positions adjacent to and away by a given distance from the respective marginal portions Gb, and irradiated with ultraviolet light from an ultraviolet light irradiation device 22 to continuously form the resin tapes 21 in a length direction of the glass film having marginal portions Gc.
  • the glass film having marginal portions Gc normally has the thick marginal portions Gb, and an effective portion Gg formed in a width-directional central region of the glass film having marginal portions Gc.
  • the effective portion Gg is a portion of the glass film having marginal portions Gc formed between the resin tapes 21 .
  • the effective portion Gg includes a region which is guaranteed in terms of a desired thickness and is capable of shipment as a product. Considering that the effective portion Gg includes a region to be used as a product, the thickness of the effective portion Gg is preferably 20 ⁇ m to 500 ⁇ m, more preferably 20 ⁇ m to 300 ⁇ m, still more preferably 20 ⁇ m to 150 ⁇ m, from the viewpoint of handling and flexibility.
  • a non-effective portion Gh is resin tapes 21 and a portion of the glass film having marginal portions Gc outside each of the resin tapes 21 .
  • the non-effective portion Gh include the marginal portions Gb and a portion whose thickness gradually decreases from the marginal portions Gb toward the effective portion Gg, i.e., includes a region which is not guarantee in terms of a desired thickness as a product, and is incapable of shipment as a product.
  • a region guaranteed as a product may be partially included in the non-effective portion Gh.
  • the given distance means a distance h 1 between one of opposite edges 21 a of each of the resin tapes 21 on the side of a corresponding one of the marginal portions Gb, and an edge Gb 1 of the corresponding marginal portion Gb on the side of the resin tape 21 , as depicted in FIG. 4( b ) .
  • a distance h 2 between the edge side Gc 1 of the glass film having marginal portions Gc and the edge 21 a of the resin tapes 21 is preferably 40% or less, more preferably 30% or less, still more preferably 20% or less, particularly preferably 10% or less, of the width w 1 of the glass film having marginal portions Gc.
  • the width w 2 of each of the resin tapes 21 is preferably 3 mm or more, more preferably 10 mm or more.
  • the width w 2 of each of the resin tapes 21 is selected such that the width of a part of the resin tape to be left on the glass film with resin tape Ga preferably becomes 3 mm or more, more preferably 10 mm or more. Further, from the viewpoint of ensuring the width of the effective portion Gg, the width w 2 is preferably 100 mm or less, more preferably 50 mm or less.
  • the thickness t 1 of each of the resin tapes 21 is preferably 25 ⁇ m to 500 ⁇ m, more preferably 50 ⁇ m to 200 ⁇ m. It should be noted here that, in case of using a non-depicted adhesive layer, the thickness t 1 of each of the resin tapes 21 is a thickness as measured after removing the adhesive layer.
  • the adhesive is liquid form
  • the adhesive when the resin tapes are laminated to the glass film having marginal portions, the adhesive has good wettability and spreading with respect to the glass, so that air bubbles or the like are less likely to be entrained between the glass and each of the resin tapes. Further, before the adhesive is cured, there is a chance for each of the adhesive tapes to freely slide on the surface of the glass. Thus, slight wrinkles and meandering irregularly occurring during the lamination are advantageously self-corrected before curing of the adhesive.
  • the adhesive examples include an epoxy-based adhesive, an acrylic-based adhesive, a urethane-based adhesive, a rubber-based pressure-sensitive adhesive, an acrylic-based pressure-sensitive adhesive, a silicone-based pressure-sensitive adhesive and a urethane-based pressure-sensitive adhesive, and any mixture thereof.
  • the thickness of the adhesive layer is preferably 1 ⁇ m to 10 ⁇ m, more preferably 1 ⁇ m to 40 ⁇ m.
  • a resin material it is possible to use a solvent-dissolvable resin, or a thermo- or photo-curable resin.
  • the solvent-dissolvable resin it is possible to use polyimide, polyamide, polyarylate, polyethylene, polyvinyl chloride, polyethylene terephthalate, polyvinylidene chloride, polypropylene, polyvinyl alcohol, polyester, polycarbonate, polystyrene, polyacrylonitrile, polyvinyl alcohol, triacetylcellulose, an ethylene vinyl acetate copolymer, an ethylene-vinyl alcohol copolymer, an ethylene-methacrylic acid copolymer, nylon, cellophane, or silicone resin, or any mixture thereof.
  • thermo- or photo-curable resin examples include an epoxy-based resin, an acrylic-based adhesive, a urethane-based adhesive, and a rubber-based resin, and any mixture thereof.
  • the solution-form solvent-dissolvable resin or the thermo- or photo-curable resin is continuously applied onto the surface of the glass film at positions adjacent to and away by a given distance from the respective marginal portions, and irradiated with heat, light or electron beam to continuously form two resin tapes in the length direction of the glass film.
  • the width and position of each of the resin tapes are the same as those in the above resin tape attaching step.
  • the marginal portion removal step (P 4 ) is process of continuously removing each of the marginal portions Gb from the glass film having marginal portions Gc, along a position between the marginal portion Gb and a corresponding one of the resin tapes 21 , or at a given width-directional position within the corresponding resin tape 21 , to form a glass film with resin tape Ga.
  • a technique to remove the marginal portions Gb it is possible to use a technique of mechanically cutting the glass, a technique of flawing (scribing) the surface of the glass, and glowing a crack (breaking the glass) by heat or bending stress, or a technique of volatilizing the glass or fragmenting the chemical bonding of the glass by light.
  • a technique to continuously remove the marginal portions Gb it is preferable to use, as an energy source, light, particularly a laser light source 30 capable of radiating laser light as collimated and coherent light. It is preferable to select laser light having a wavelength bend in which light absorption by a glass is significant.
  • a distance h 3 from the one edge of the resin tape 21 a of the resin tape 21 to a cut line by the laser light source 30 is preferably set to 1 mm or more, more preferably 3 mm or more.
  • each of the marginal portions Gb can be continuously removed from the glass film having marginal portions Gc, along a given position between the marginal portion Gb of the glass film having marginal portions Gc and a corresponding one of the resin tapes 21 , as depicted in FIG. 4( c ) (or within the corresponding resin tape 21 ), to produce a glass film with resin tape Ga.
  • the wrinkles Gf generated in the glass film having marginal portions Gc are relieved.
  • each of the marginal portions Gb from the glass film having marginal portions Gc, along a given width-directional position between the marginal portion Gb and a corresponding one of the resin tapes 21 , as depicted in FIG. 4( c ) .
  • the manufacturing method of glass film with resin tape according to the present invention may further comprise the winding step (P 5 ) to produce a roll of the glass film with resin tape Ga (hereinafter referred to as “resin tape-attached glass roll Gi”).
  • the winding step (P 5 ) depicted in FIG. 1 is process of winding the glass film with resin tape Ga in the form of a roll to produce a resin tape-attached glass roll Gi.
  • the protective sheet 51 is not particularly limited, but examples thereof includes: a resin sheet such as polyethylene terephthalate, polystyrene, polyethylene, polypropylene, polyimide, nylon, polyvinyl chloride, polyester, polycarbonate, cellophane, or silicone; a foamable resin sheet; and paper.
  • the protective sheet 51 is disposed between the resin tapes 21 . This makes it possible to prevent interference between the protective sheet 51 and the resin tapes 21 .
  • the thickness of the protective sheet 51 is greater than the thickness of each of the resin tapes 21 (when using the adhesive layer, the total thickness of the resin tape as a substrate and the adhesive layer).
  • the width of the protective sheet 51 is greater than the width of the glass film with resin tape Ga.
  • FIG. 2 depicts a production system constructed by selectively combining desirable examples of the above process elements (P 1 to P 5 ).
  • the present invention is not limited thereto.
  • the schematic diagram depicts a process in which, after the glass film having marginal portions Gc is formed into a given shape and solidified through the overflow downdraw process, while being conveyed in a vertical direction, and further conveyed by feed roller pairs 60 , the direction of the glass film having marginal portions Gc is changed in a transverse direction by direction-change rollers 70 , and then the wounding step is performed.
  • the glass film having marginal portions Gc may be conveyed only in the vertical direction by omitting the direction-change rollers 70 , or may be conveyed only in the transverse direction in a case where the float process is employed.
  • the process elements P 1 to P 5 are not limited to those in FIG. 2 , as long they are an optimal arrangement in terms of productivity under restrictions of principle.
  • the resin tapes 21 are formed on only the upper surface Gj of the glass film having marginal portions Gc.
  • the present invention is not limited thereto, but the resin tapes 21 may be formed on only a lower surface or each of the upper and lower surfaces of the glass film having marginal portions Gc.
  • FIG. 6 is a schematic diagram for explaining one example of a glass film manufacturing method according to the present invention.
  • a glass film Gk according to the present invention is produced by: unrolling the glass film with resin tape Ga from the resin tape-attached glass roll Gi; and performing a resin tape removal step of continuously removing, from the glass film with resin tape Ga, width-directional opposite edge regions G 1 of the glass film with resin tape Ga on which the resin tapes are formed, by cutting means such as a laser light source 31 .
  • the glass film Gk may be further wound into a roll of the glass film Gk (glass roll Gm), or may be cut in a width direction by a non-depicted width-directional cutting device, to produce a sheet-shaped glass film Gk.
  • a feeding source is not limited to the resin tape-attached glass roll Gi, but may be the sheet-shaped glass film with resin tape Ga in an unrolled state.
  • the glass film with resin tape Ga is free of wrinkles Gf, as mentioned above.
  • the width-directional opposite edge regions G 1 of the glass film with resin tape Ga can be continuously removed adequately by the laser light source 31 , without further firming the resin tapes 21 .
  • a glass film with resin tape was produced using the method described in connection with FIG. 2 . Specifically, a glass film having marginal portions was formed into a given shape through the overflow downdraw process, to have a width of 1500 mm. The thickness of each of two marginal portions was 1 mm, the thickness of an effective portion was 100 ⁇ m. After annealing the glass film having marginal portions, the direction of the glass film having marginal portions was changed to a transverse direction. Each of two resin tapes made of polyethylene terephthalate (PET) and formed to have a width of 25 mm was laminated to an upper of the glass film having marginal portions after being subjected to the direction change, while an ultraviolet-curing resin was interposed therebetween at a thickness of 20 ⁇ m.
  • PET polyethylene terephthalate
  • the resin tapes were irradiated with ultraviolet light to bond the resin tapes to the upper surface of the glass film having marginal portions.
  • each of the resin tapes was attached at a position where the h 1 in FIG. 4( b ) is 130 mm.
  • the marginal portions were continuously removed by radiating a CO 2 laser having a wavelength of 10.6 ⁇ m from the upper surface of the glass film having marginal portions.
  • the CO 2 laser is radiated to a position where the h 3 in FIG. 4( c ) is 5 mm.
  • a glass film with resin tape obtained after the cutting and removal was wound around a winding core through a protective sheet to produce a resin tape-attached glass roll. As a result, a glass film with resin tape having a length of 1 km could be wound into a roll 10 times without breakage. That is, even when laser cutting of the marginal portions was continuously performed over 10 km, no breakage occurred.
  • the above resin tape-attached glass roll having a length of 1 km was unrolled, and subjected to cutting using a CO 2 laser having a wavelength of 10.6 ⁇ m to continuously remove width-directional opposite edge regions of the glass film with resin tape on which the resin tapes were formed, thereby producing a glass film.
  • the CO 2 laser is radiated to a position away inwardly from an edge of the glass film with resin tape by 35 mm (5 mm inward from an outer edge of the resin tapes).
  • the produced glass film was further wound through a protective film to form a glass roll.
  • the above ten resin tape-attached glass rolls were unrolled, and each of the resulting ten tape-attached glass films was used to produce a glass roll. As a result, all of the ten glass films could be wound without breakage.

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US10821707B2 (en) * 2018-05-17 2020-11-03 Vaon, Llc Multi-layer, flat glass structures
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KR20210132229A (ko) 2021-11-03
CN109923084A (zh) 2019-06-21
US11999133B2 (en) 2024-06-04
KR20190066615A (ko) 2019-06-13
JP2022093392A (ja) 2022-06-23
JP7112960B2 (ja) 2022-08-04
WO2018079343A1 (ja) 2018-05-03
EP3533771A4 (en) 2020-06-03
JPWO2018079343A1 (ja) 2019-10-03
EP3533771A1 (en) 2019-09-04
US20230033067A1 (en) 2023-02-02
TWI770074B (zh) 2022-07-11
KR102597116B1 (ko) 2023-11-01

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