WO2017040452A1 - Procédé de fabrication d'articles en verre modelés - Google Patents

Procédé de fabrication d'articles en verre modelés Download PDF

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Publication number
WO2017040452A1
WO2017040452A1 PCT/US2016/049356 US2016049356W WO2017040452A1 WO 2017040452 A1 WO2017040452 A1 WO 2017040452A1 US 2016049356 W US2016049356 W US 2016049356W WO 2017040452 A1 WO2017040452 A1 WO 2017040452A1
Authority
WO
WIPO (PCT)
Prior art keywords
glass
laminated glass
article
area
laminate
Prior art date
Application number
PCT/US2016/049356
Other languages
English (en)
Inventor
Dana Craig Bookbinder
Thierry Luc Alain Dannoux
Pushkar Tandon
Natesan Venkataraman
Original Assignee
Corning Incorporated
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 Corning Incorporated filed Critical Corning Incorporated
Publication of WO2017040452A1 publication Critical patent/WO2017040452A1/fr

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B23/00—Re-forming shaped glass
    • C03B23/02—Re-forming glass sheets
    • C03B23/023—Re-forming glass sheets by bending
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B23/00—Re-forming shaped glass
    • C03B23/02—Re-forming glass sheets
    • C03B23/023—Re-forming glass sheets by bending
    • C03B23/0235—Re-forming glass sheets by bending involving applying local or additional heating, cooling or insulating means
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B23/00—Re-forming shaped glass
    • C03B23/02—Re-forming glass sheets
    • C03B23/023—Re-forming glass sheets by bending
    • C03B23/035—Re-forming glass sheets by bending using a gas cushion or by changing gas pressure, e.g. by applying vacuum or blowing for supporting the glass while bending
    • C03B23/0352—Re-forming glass sheets by bending using a gas cushion or by changing gas pressure, e.g. by applying vacuum or blowing for supporting the glass while bending by suction or blowing out for providing the deformation force to bend the glass sheet
    • C03B23/0355—Re-forming glass sheets by bending using a gas cushion or by changing gas pressure, e.g. by applying vacuum or blowing for supporting the glass while bending by suction or blowing out for providing the deformation force to bend the glass sheet by blowing without suction directly on the glass sheet
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B23/00—Re-forming shaped glass
    • C03B23/02—Re-forming glass sheets
    • C03B23/023—Re-forming glass sheets by bending
    • C03B23/035—Re-forming glass sheets by bending using a gas cushion or by changing gas pressure, e.g. by applying vacuum or blowing for supporting the glass while bending
    • C03B23/0352—Re-forming glass sheets by bending using a gas cushion or by changing gas pressure, e.g. by applying vacuum or blowing for supporting the glass while bending by suction or blowing out for providing the deformation force to bend the glass sheet
    • C03B23/0357—Re-forming glass sheets by bending using a gas cushion or by changing gas pressure, e.g. by applying vacuum or blowing for supporting the glass while bending by suction or blowing out for providing the deformation force to bend the glass sheet by suction without blowing, e.g. with vacuum or by venturi effect
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B23/00—Re-forming shaped glass
    • C03B23/26—Punching reheated glass

Definitions

  • FIGs. 7 A and 7B respectively, show a perspective drawing (7 A) of an exemplary necked container article (700) having multiple deep bend shapes prepared from a single glass laminate sheet (100), and the exemplary necked container article (700) in partial cross-section view (7B).
  • Deep draw or like terms, such as “shaped” and “formed”, refer to the extent of displacement from planarity, for example, from 65 to 100 degrees.
  • the disclosed method can use, for example, blow molding, or like methods, to form a final glass laminate article directly from the heated glass laminate sheet or from an intermediate glass laminate parison.
  • the disclosed method can be used in combination with other known molding methods, such as compression molding, injection molding, precision glass molding, impact extrusion, and like methods, for glass laminate perform
  • the disclosure provides a method for forming strengthened laminated glass products, for example, in a large scale production and in rapid processing times.
  • the disclosure provides a shaped glass laminate article having a sidewall of thickness 5 2f and a base of thickness 6i f , wherein the sidewall angle, ⁇ , relative to the base is larger than 65°, and the corexlad thickness ratio follows 0.7 ⁇ 2 f /6i f ⁇ 1.3.
  • the corexlad thickness ratio of 5 2f /6i f can be, for example, from 0.9 and 1.1.
  • the forming angle in the deep drawn strengthened article has a forming angle > 70° such as 70 to 100°.
  • the resulting laminate article can also have strength after forming without having additional strengthening method steps such as tempering or ion-exchange.
  • the shaped laminated glass article can have at least one deep bend shape having at least one sidewall bend angle ( ⁇ ) of greater than or equal to 65°.
  • the laminated glass sheet can be, for example, a discrete piece of glass, or a continuous ribbon of glass.
  • the disclosure provides a laminated glass article made by the method disclosed above.
  • the laminated glass article can be, for example, selected from: a bottle, a vial, a beaker, an enclosure, a non-planar display glass, a bowl, a glass storage container, and like shapes and containers, or combinations thereof.
  • deforming at least a portion of the heated portion of the strengthened glass sheet for example, by applying at least one force suitable to deform the sheet into a shape or form other than a sheet.
  • the deforming at least a portion of the heated portion of the strengthened glass sheet comprises or consists of, for example, contacting the strengthened glass sheet that includes the heated portion with at least one of: a motive force, a mold, or a combination thereof.
  • the heating and deforming can be accomplished simultaneously or sequentially.
  • the strengthened glass sheet can have, for example, a laminated structure and can have, for example, a core layer and at least one clad layer on each face or surface of the core.
  • Fig. 1 is a schematic of a laminated glass sheet having a structure (100).
  • the core glass composition (110) can be selected to have higher CTE as compared to the clad glass (120) composition. A careful selection of the glass
  • the method yields an article having with different regions having different thicknesses, for example, the walls (360) have the same or similar thickness and the base (370) has a different thickness, such as a thicker base compared to the walls.
  • a deforming motive force such as a plunger, a vacuum, an air blow or gas pressure source, or combination thereof, is applied to the first heated glass laminate region to mold the laminate.
  • a third step 3) the deformed/molded article is separated from the mold and optionally trimmed.
  • the separated article has side walls that are significantly thinner than the base or bottom of the separated article.
  • Figs. 7 A and 7B respectively, show a perspective drawing (7 A) of an exemplary necked container article (700) having multiple deep bend shapes prepared from, for example, a single glass laminated sheet (100) or laminated roll stock, and the exemplary necked container article (700) in partial cross-section view (7B).
  • the necked container articles (700) were prepared by selectively heating the laminate sheet (100) with a torch as shown in Fig. 4, and then deforming the selectively heated laminate sheet by plunging with a shaped carbon rod. Examination of the formed surface revealed unexpectedly and exceptionally low incidence of surface tool marking.
  • the inset in Fig. 7B shows proportionately uniform core and clad laminate layer (110 and 120) thicknesses at different locations in the wall of the shaped or deep bend laminate article.
  • a deep bend shape, formed, or shaped glass laminate sample was prepared by heating, using a hydrogen-oxygen torch, a square glass laminate sheet, e.g., about 102 mm (4 inches) wide per side, and 0.7 mm (0.027 inches) thick.
  • the sheet was first heated at a low temperature broad flame of approximately 4 cm in diameter, at from about 800 to 900 °C until the sheet just started to sag.
  • the center or core of the sheet was heated to from about 900 to 1000 °C with a narrowly focused flame or light beam, having about a 10 mm diameter, and then the doubly heated laminate sheet was contacting with a 5 mm diameter plunger, e.g., plunging a carbon rod into the glass laminate sample at a right or normal angle (e.g., 90°) and removing the carbon rod, to provide the deep bend shape.
  • a 5 mm diameter plunger e.g., plunging a carbon rod into the glass laminate sample at a right or normal angle (e.g., 90°) and removing the carbon rod, to provide the deep bend shape.
  • No mold was used in this carbon rod plunge experiment.
  • the resulting formed laminate glass article had a depth of about 34 mm, an angle ⁇ (capital theta) between the bottom and the sidewall of about 80 to 85°, and sidewall thicknesses and bottom wall thicknesses of about 0.1 mm.
  • the glass laminate sheet was made by a known laminate fusion draw process having a clad layer of about 50 microns on each side of the glass core, and having a glass laminate sheet total thickness of 0.7 mm.
  • the glass laminate sheet was made with a clad was substantially alkali-free and having a CTE of about 30 x 10 "7 /°C, and a softening point of about 985 °C.
  • the glass laminate was comprised of the core glass having a CTE of about 85 x 10 "7 /°C, and softening point of about 837 °C.
  • the deep bend shapes prepared by this example retained a significantly shiny exterior and showed minimal tool marking (e.g., mold marks).
  • the minimal tool marking has been observed in other forming processes, such as 3D forming, or mold pressing.
  • the resulting glass laminate deep bend shape had an core thickness of about 0.9 mm and both clad layers had a thickness of about 0.05 mm for a total glass laminate thickness of about 1.0 mm.
  • a flat glass laminate sheet of initial thickness, ⁇ , of 0.1 cm is formed into a deep shape strengthened glass article having a draw angle of greater than or equal to 65° ( ⁇ > 65°).
  • Li and L 2 are the lengths (in cross-section) in the initial glass sheet corresponding to the final base and sidewall lengths of the formed article.
  • Cos ⁇ refers to the cosine of ⁇ .
  • the final thicknesses of the sidewall 5 2f and base 6i f , respectively, in the formed glass laminate article is calculated using the following equations (Eq. 1 to 3):
  • the lack of tool marking artifacts may be attributable to the clad layers having a higher viscosity at the forming temperature than the core, and the clad can be free of alkali.
  • the laminate sheets do not have to be made by a laminate fusion process but can be obtained from other processes such as slot draw, and like other similar processes.
  • the disclosed method can use a controlled differential heating means, for example, a flame, a laser, and like means, or a combination thereof, and a plunger to create the deep bend shapes in, for example, making individual pieces (Fig. 6) or in mass production (Fig. 5).
  • the final strength of the formed glass laminate will depend on the CTE differential between the core and clad layers.
  • the final formed glass laminate product is expected to retain much of the strength of the initial unformed glass laminate.
  • the strength of the final formed glass laminate product can be higher than the strength of the initial unformed glass laminate by having the formed glass laminate product cool at a fast rate during the forming method (i.e., after the deforming step).
  • the laminate feedstock can be made by any suitable lamination process, for example:
  • the glass core can have a composition comprised of an alkali species.
  • the glass core can comprise in weight percent, on an oxide basis, for example: i) 50 ⁇ Si0 2 ⁇ 65%; ii) 10 ⁇ A1 2 0 3 ⁇ 20%; iii) 0 ⁇ MgO ⁇ 5%; iv) 10 ⁇ Na 2 0 ⁇ 20% ; v) 0 ⁇ K 2 0 ⁇ 5%, and in embodiments vi) > 0 of at least one of B 2 0 3 , CaO, Zr0 2; and Fe 2 0 3 .
  • the glass can be an alkali glass including, for example, P 2 0 5 , which promotes a more efficient ion-exchange of the glass.
  • the two glass compositions of the respective clad layer and core layers in the laminate feedstock can be selected so that:

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Joining Of Glass To Other Materials (AREA)

Abstract

La présente invention concerne un procédé de fabrication d'un article en verre feuilleté modelé, comprenant : un premier chauffage à une première température d'au moins une première zone d'une plaque de verre feuilleté ayant un noyau et au moins une couche de gaine sur le noyau, le premier chauffage est au-dessus du point de ramollissement de la première zone ; un deuxième chauffage à une deuxième température d'au moins une deuxième zone de la plaque de verre feuilleté, le deuxième chauffage est au-dessus du point de ramollissement de la deuxième zone ; et la déformation d'au moins une partie de la deuxième zone ramollie de la laque de verre feuilleté pour former l'article de verre feuilleté modelé, dans lequel la première température est différente de la deuxième température, la première zone est plus grande que la deuxième zone, et la première zone contient la deuxième zone. L'invention concerne en outre un article en verre feuilleté modelé qui peut être fabriqué par le procédé de l'invention.
PCT/US2016/049356 2015-09-04 2016-08-30 Procédé de fabrication d'articles en verre modelés WO2017040452A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201562214335P 2015-09-04 2015-09-04
US62/214,335 2015-09-04

Publications (1)

Publication Number Publication Date
WO2017040452A1 true WO2017040452A1 (fr) 2017-03-09

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Country Status (1)

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WO (1) WO2017040452A1 (fr)

Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1623311A (en) * 1924-12-12 1927-04-05 Hodecker Wilhelm Method of manufacturing double-walled glass vessels
US2102357A (en) * 1933-03-04 1937-12-14 Dichter Jakob Method and apparatus for making double-walled glass vessels
GB530343A (en) * 1939-06-21 1940-12-10 Wmf Wuerttemberg Metallwaren A process for the production of glass-ware
FR2294990A1 (fr) * 1974-12-16 1976-07-16 American Optical Corp Methode de fabrication d'une lentille a foyers multiples et lentille a foyers multiples ainsi produite
US4220462A (en) * 1978-06-23 1980-09-02 Aladdin Industries, Incorporated Apparatus for making a vacuum insulated container
JPH0255240A (ja) * 1988-08-17 1990-02-23 Asahi Glass Co Ltd 合せガラス用合せ素板ガラスの曲げ成形加工方法及びその装置
US5071461A (en) * 1988-07-18 1991-12-10 Asahi Glass Company, Ltd. Method and apparatus for bending overlapping glass plates to form a laminated glass structure
EP1127854A2 (fr) * 2000-02-28 2001-08-29 Owens-Brockway Glass Container Inc. Containeur en verre laminé flint/brun et son procédé de fabrication
EP1391434A2 (fr) * 2000-12-15 2004-02-25 Guido Porcellato Procédé et appareil pour la fabrication d'une planche à l'évier intégrée avec des éviers par moulage d'une feuile de verre
US20060185395A1 (en) * 2005-02-15 2006-08-24 Vladislav Sklyarevich Method of manufacturing curved glass using microwaves
US20100129602A1 (en) * 2008-11-25 2010-05-27 Matthew John Dejneka Progressive pressing to form a glass article
WO2012118612A1 (fr) * 2011-02-28 2012-09-07 Corning Incorporated Procédé de fabrication d'article en verre en trois dimensions à partir de feuille de verre en deux dimensions
US8607589B2 (en) * 2010-02-03 2013-12-17 Asahi Glass Company, Limited Method and apparatus for annealing glass plate
US20140234581A1 (en) * 2013-02-20 2014-08-21 Corning Incorporated Method and system for forming shaped glass articles
US20140335322A1 (en) * 2013-05-07 2014-11-13 Corning Incorporated Process and apparatus for forming shaped glass articles

Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1623311A (en) * 1924-12-12 1927-04-05 Hodecker Wilhelm Method of manufacturing double-walled glass vessels
US2102357A (en) * 1933-03-04 1937-12-14 Dichter Jakob Method and apparatus for making double-walled glass vessels
GB530343A (en) * 1939-06-21 1940-12-10 Wmf Wuerttemberg Metallwaren A process for the production of glass-ware
FR2294990A1 (fr) * 1974-12-16 1976-07-16 American Optical Corp Methode de fabrication d'une lentille a foyers multiples et lentille a foyers multiples ainsi produite
US4220462A (en) * 1978-06-23 1980-09-02 Aladdin Industries, Incorporated Apparatus for making a vacuum insulated container
US5071461A (en) * 1988-07-18 1991-12-10 Asahi Glass Company, Ltd. Method and apparatus for bending overlapping glass plates to form a laminated glass structure
JPH0255240A (ja) * 1988-08-17 1990-02-23 Asahi Glass Co Ltd 合せガラス用合せ素板ガラスの曲げ成形加工方法及びその装置
EP1127854A2 (fr) * 2000-02-28 2001-08-29 Owens-Brockway Glass Container Inc. Containeur en verre laminé flint/brun et son procédé de fabrication
EP1391434A2 (fr) * 2000-12-15 2004-02-25 Guido Porcellato Procédé et appareil pour la fabrication d'une planche à l'évier intégrée avec des éviers par moulage d'une feuile de verre
US20060185395A1 (en) * 2005-02-15 2006-08-24 Vladislav Sklyarevich Method of manufacturing curved glass using microwaves
US20100129602A1 (en) * 2008-11-25 2010-05-27 Matthew John Dejneka Progressive pressing to form a glass article
US8607589B2 (en) * 2010-02-03 2013-12-17 Asahi Glass Company, Limited Method and apparatus for annealing glass plate
WO2012118612A1 (fr) * 2011-02-28 2012-09-07 Corning Incorporated Procédé de fabrication d'article en verre en trois dimensions à partir de feuille de verre en deux dimensions
US20140234581A1 (en) * 2013-02-20 2014-08-21 Corning Incorporated Method and system for forming shaped glass articles
US20140335322A1 (en) * 2013-05-07 2014-11-13 Corning Incorporated Process and apparatus for forming shaped glass articles

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