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WO2016196534A1 - Appareil et procédé de fabrication de verre avec capacité d'écoulement - Google Patents

Appareil et procédé de fabrication de verre avec capacité d'écoulement Download PDF

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Publication number
WO2016196534A1
WO2016196534A1 PCT/US2016/035136 US2016035136W WO2016196534A1 WO 2016196534 A1 WO2016196534 A1 WO 2016196534A1 US 2016035136 W US2016035136 W US 2016035136W WO 2016196534 A1 WO2016196534 A1 WO 2016196534A1
Authority
WO
WIPO (PCT)
Prior art keywords
glass
slot
forming device
trough
molten glass
Prior art date
Application number
PCT/US2016/035136
Other languages
English (en)
Inventor
William Anthony Whedon
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
Priority to KR1020177037536A priority Critical patent/KR20180006458A/ko
Priority to CN201680032554.7A priority patent/CN107683264A/zh
Priority to JP2017562609A priority patent/JP2018527272A/ja
Publication of WO2016196534A1 publication Critical patent/WO2016196534A1/fr

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B7/00—Distributors for the molten glass; Means for taking-off charges of molten glass; Producing the gob, e.g. controlling the gob shape, weight or delivery tact
    • 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
    • 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
    • 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
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
    • C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
    • C03B5/26—Outlets, e.g. drains, siphons; Overflows, e.g. for supplying the float tank, tweels
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
    • C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
    • C03B5/26—Outlets, e.g. drains, siphons; Overflows, e.g. for supplying the float tank, tweels
    • C03B5/265—Overflows; Lips; Tweels
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B7/00—Distributors for the molten glass; Means for taking-off charges of molten glass; Producing the gob, e.g. controlling the gob shape, weight or delivery tact
    • C03B7/005—Controlling, regulating or measuring
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
    • Y02P40/57—Improving the yield, e-g- reduction of reject rates

Definitions

  • the present disclosure relates generally to a glass manufacturing apparatus and method and more specifically to a glass manufacturing apparatus with flow through capability.
  • Methods for the manufacture of glass materials include the fusion draw method wherein molten glass flows over opposing sides of a glass forming device and then rejoins to form a glass sheet below the bottom, or root, of the device.
  • Such methods can enable the production of relatively thin, flat glass sheets with high surface quality, which are desirable characteristics of glass intended for use in display applications.
  • the apparatus includes a glass forming device, which includes an inlet end and a compression end and a l trough extending between the inlet end and the compression end.
  • the glass forming device also includes a first side and a second side that each extend from the inlet end to the compression end in the horizontal direction.
  • the first side extends from a first weir on a first side of the trough to a root of the glass forming device in the vertical direction and the second side extends from a second weir on a second side of the trough to the root of the glass forming device in the vertical direction.
  • the trough has a depth that decreases between the inlet end and the compression end.
  • the glass forming device further includes a slot that extends along at least a length of the trough in the horizontal direction and extends from the trough to the root of the glass forming device in the vertical direction.
  • the method includes introducing molten glass to a glass forming device.
  • the glass forming device includes an inlet end and a compression end and a trough extending between the inlet end and the compression end.
  • the glass forming device also includes a first side and a second side that each extend from the inlet end to the compression end in the horizontal direction.
  • the first side extends from a first weir on a first side of the trough to a root of the glass forming device in the vertical direction and the second side extends from a second weir on a second side of the trough to the root of the glass forming device in the vertical direction.
  • the trough has a depth that decreases between the inlet end and the compression end.
  • the glass forming device further includes a slot that extends along at least a length of the trough in the horizontal direction and extends from the trough to the root of the glass forming device in the vertical direction. Molten glass flows from the trough over the first and second weirs and through the slot.
  • FIG. 1 is a schematic view of an apparatus for producing a glass article including a forming device in accordance with aspects of the disclosure
  • FIG. 2 is a cross-sectional enlarged perspective view of the forming device of FIG. i;
  • FIG. 3 is a perspective view of a glass forming device according to embodiments disclosed herein;
  • FIG. 4A is an inlet end view of the glass forming device of FIG. 3;
  • FIG. 4B is a compression end view of the glass forming device of FIG. 3;
  • FIG. 5A is a top view of the glass forming device of FIG. 3;
  • FIG. 5B is a bottom view of the glass forming device of FIG. 3.
  • FIG. 6 is an end cutaway view of a glass forming device according to embodiments disclosed herein, wherein heating elements are disposed in proximity to the forming device.
  • FIG. 1 illustrates an exemplary schematic view of a glass forming apparatus 101 for fusion drawing a glass ribbon 103 for subsequent processing into glass sheets.
  • the illustrated glass forming apparatus comprises a fusion draw apparatus, although other fusion forming apparatus may be provided in further examples.
  • the glass forming apparatus 101 can include a melting vessel (or melting furnace) 105 configured to receive batch material 107 from a storage bin 109.
  • the batch material 107 can be introduced by a batch delivery device 111 powered by a motor 113.
  • An optional controller 115 can be configured to activate the motor 113 to introduce a desired amount of batch material 107 into the melting vessel 105, as indicated by arrow 117.
  • a glass level probe 119 can be used to measure a glass melt (or molten glass) 121 level within a standpipe 123 and communicate the measured information to the controller 115 by way of a communication line 125.
  • the glass forming apparatus 101 can also include a fining vessel 127, such as a fining tube, located downstream from the melting vessel 105 and fluidly coupled to the melting vessel 105 by way of a first connecting tube 129.
  • a mixing vessel 131 such as a stir chamber, can also be located downstream from the fining vessel 127 and a delivery vessel 133, such as a bowl, may be located downstream from the mixing vessel 131.
  • mixing vessel 131 may be positioned upstream from fining vessel 127, and in certain embodiments multiple mixing vessels may be employed, for example a first mixing vessel 131 positioned upstream from fining vessel 127 and a second mixing vessel 131 positioned downstream from fining vessel 127.
  • a second connecting tube 135 can couple the fining vessel 127 to the mixing vessel 131 and a third connecting tube 137 can couple the mixing vessel 131 to the delivery vessel 133.
  • a downcomer 139 can be positioned to deliver glass melt 121 from the delivery vessel 133 to an inlet 141 of a forming device 143.
  • the melting vessel 105, fining vessel 127, mixing vessel 131, delivery vessel 133, and forming device 143 are examples of glass melt stations that may be located in series along the glass forming apparatus 101.
  • the melting vessel 105 is typically made from a refractory material, such as refractory (e.g. ceramic) brick.
  • the glass forming apparatus 101 may further include components that are typically made from platinum or platinum-containing metals such as platinum-rhodium, platinum-iridium and combinations thereof, but which may also comprise such refractory metals such as molybdenum, palladium, rhenium, tantalum, titanium, tungsten, ruthenium, osmium, zirconium, and alloys thereof and/or zirconium dioxide.
  • the platinum-containing components can include one or more of the first connecting tube 129, the fining vessel 127 (e.g., finer tube), the second connecting tube 135, the standpipe 123, the mixing vessel 131 (e.g., a stir chamber), the third connecting tube 137, the delivery vessel 133 (e.g., a bowl), the downcomer 139 and the inlet 141.
  • the forming device 143 is made from a ceramic material, such as the refractory, and is designed to form the glass ribbon 103.
  • FIG. 2 is a cross-sectional perspective view of the glass forming apparatus 101 along line 2-2 of FIG. 1.
  • the forming device 143 can include a trough 201 at least partially defined by a pair of weirs comprising a first weir 203 and a second weir 205 defining opposite sides of the trough 201.
  • the trough may also be at least partially defined by a bottom wall 207.
  • the inner surfaces of the weirs 203, 205 and the bottom wall 207 define a substantially U shape that may be provided with round corners. In further examples, the U shape may have surfaces substantially 90° relative to one another.
  • the trough may have a bottom surface defined by an intersection of the inner surfaces of the weirs 203, 205.
  • the trough may have a V-shaped profile.
  • the trough can include further configurations in additional examples.
  • the trough 201 can have a depth "D" between a top of the first and/or second weir 203, 205, and bottom wall 207 of the trough 201 that varies along an axis 209 although the depth may be substantially the same along the axis 209. Varying the depth "D" of the trough 201 may facilitate consistency in glass ribbon thickness across the width of the glass ribbon 103. In just one example, as shown in FIG. 2, the depth "Di" near the inlet of the forming device 143 can be greater than the depth "D 2 " of the trough 201 at a location downstream from the inlet of the trough 201. As demonstrated by the dashed line 210, the bottom wall 207 may extend at an acute angle relative to the axis 209 to provide a substantially continuous reduction in depth along a length of the forming device 143 from the inlet end to the opposite end.
  • the forming device 143 further includes a forming wedge 211 comprising a pair of downwardly inclined forming surface portions 213, 215 extending between opposed ends of the forming wedge 211.
  • the pair of downwardly inclined forming surface portions 213, 215 converge along a downstream direction 217 to form a root 219.
  • a draw plane 221 extends through the root 219 wherein the glass ribbon 103 may be drawn in the downstream direction 217 along the draw plane 221. As shown, the draw plane 221 can bisect the root 219 although the draw plane 221 may extend at other orientations with respect to the root 219.
  • the forming device 143 may optionally be provided with one or more edge directors 223 intersecting with at least one of the pair of downwardly inclined forming surface portions 213, 215.
  • the one or more edge directors can intersect with both downwardly inclined forming surface portions 213, 215.
  • an edge director can be positioned at each of the opposed ends of the forming wedge 211 wherein an edge of the glass ribbon 103 is formed by molten glass flowing off the edge director.
  • the edge director 223 can be positioned at a first opposed end 225 and a second identical edge director (not shown in FIG. 2) can be positioned at a second opposed end (see 227 in FIG. 1).
  • Each edge director 223 can be configured to intersect with both of the downwardly inclined forming surface portions 213, 215.
  • Each edge director 223 can be substantially identical to one another although the edge directors may have different characteristics in further examples.
  • Various forming wedge and edge director configurations may be used in accordance with aspects of the present disclosure. For example, aspects of the present disclosure may be used with forming wedges and edge director configurations disclosed in U.S. Pat. No. 3,451,798, U.S. Patent No.
  • Embodiments disclosed herein include those in which a slot (not shown in FIG. 2) is present along at least a portion of axis 209. An example of such embodiments is shown in FIGS. 3-6. While certain details of FIG. 2 are not shown in FIGS. 3-6, it is to be understood that such details and related description can be applied to the embodiments shown in FIGS. 3- 6. It should also be understood that the glass forming device shown in FIGS. 3-6 can be used in glass forming apparatus 101.
  • FIG. 3 shows a side perspective view of a glass forming device according to embodiments disclosed herein.
  • FIGS. 4A and 4B show, respectively, inlet and compression end views of the embodiment shown in FIG. 3 while FIGS. 5 A and 5B show, respectively, top and bottom views of the embodiment shown in FIG. 3.
  • glass forming device 300 includes an inlet end 312, a compression end 314, and a trough 302 extending between the inlet end 312 and the compression end 314.
  • Glass forming device also includes a first side 316 and a second side 318, wherein the first side 316 extends, in the vertical direction, from a first weir 304 on a first side of the trough 302 to a root 330 of the glass forming device.
  • Second side 318 similarly extends, in the vertical direction, from a second weir 306 on a second side of the trough 302 to the root 330 of the glass forming device.
  • trough 302 has a depth "D" that decreases between inlet end 312 and compression end 314. Accordingly, cross-sectional area of trough 302 (shown, e.g., in FIG. 4A) decreases between inlet end 312 and compression end 314.
  • Glass forming device 300 additionally includes a slot 310 that extends along at least a length of trough 302 in the horizontal direction (as shown in e.g., FIGS. 3 and 5A) and extends from the trough 302 to the root 330 of the glass forming device 300 in the vertical direction (as shown, e.g., in FIGS. 3, 4A, and 4B).
  • the slot 310 may extend nearly the entire distance along the trough 302 in the horizontal direction between inlet end 312 and compression end 314 or the slot 310 may extend only a portion of that distance, such as from 10% to 90% of that distance, and further such as from 20% to 80% of that distance.
  • edge directors 320 and 322 are configured in proximity to root 330 on either end of glass forming device 300.
  • the slot 310 extending along at least a length of trough 302 in the horizontal direction has a width that increases between the inlet end 312 and the compression end 314.
  • the width "W2" of the slot 310 nearest the compression end 314 is larger than the width "Wl" of the slot 310 nearest the inlet end 312.
  • the width "W2" of the slot 310 nearest the compression end 314 may be at least 10%, such as at least 20%, and further such as at least 50%, and yet further such as at least 100% wider than the width "Wl" of the slot 310 nearest the inlet end 312.
  • the width "Wl" of the slot 310 nearest the inlet end 312 may range from 50% to 90%, such as from 55% to 85%, and further such as from 60% to 80% of the width "W2" of the slot 310 nearest the compression end 314.
  • the difference in slot width as a function of distance between the inlet end 312 and compression end 314 can be designed to compensate for the difference in the amount of molten glass (and, hence, pressure of molten glass) in a given cross-sectional area of the trough 302 above the slot 310 when the glass forming device is in full operation, thereby enabling a relatively constant flow of molten glass along the longitudinal length of the slot 310.
  • the relationship between slot width and trough depth will additionally depend on factors such as molten glass viscosity and molten glass density as well as the absolute width of the slot in both the horizontal and vertical directions.
  • slot 310 extends along a length of the root 330 in the horizontal direction.
  • the slot 310 may extend nearly the entire distance along the root 330 in the horizontal direction or the slot 310 may extend only a portion of that distance, such as from 5% to 95% of that distance, and further such as from 10% to 90% of that distance.
  • the horizontal length "L2" of the slot 310 extending along a length of the root 330 is longer than the horizontal length "LI" of the slot 310 extending along a length of the trough 302.
  • the horizontal length of the slot along the root may be
  • the length "L2" may be at least 5%, such as at least 10%, and further such as at least 15% longer than the length "LI", such as from 5% to 30% longer, including from 10% to 25% longer, and further including from 15% to 20% longer.
  • a slot with a relatively long horizontal length along the length of the root can at least partially compensate for attenuation (i.e., shortening of the width) of the molten glass ribbon that flows over the weirs and down the first and second sides of the glass forming device by diverting the flow of molten glass through the slot toward the outermost edges of the molten glass ribbon.
  • This can potentially increase the quality area of the molten glass ribbon, that is, the area of the glass ribbon that comprises a substantially uniform thickness, and can allow for greater control of bead formation of the outermost edges of the ribbon.
  • slot 310 extending along a length of root 330 has a width that is approximately constant along most of its length and is tapered at its ends (near edge directors 320 and 322).
  • slot 310 extending along a length of root 330 may have a width that is approximately constant along at least a majority of its length, such as at least 75% of its length, and further such as at least 85% of its length, and yet further such as at least 95% of its length, and even yet further such as substantially all of its length (such that the ends of slot 310 extending along a length of root 330 are not tapered).
  • a slot 310 extending along a length of root 330 having a width that is approximately constant along at least a majority of its length can further enable a molten glass ribbon with approximately constant width.
  • FIGS. 5A and 5B show a slot 310
  • FIG. 6 shows an end cutaway view of a glass forming device according to embodiments disclosed herein wherein a glass ribbon 103 is formed below root 330 of glass forming device 300.
  • molten glass flows from the trough 302, over the first weir 304, and down the first side 316 toward the root 330.
  • Molten glass also flows from the trough 302, over the second weir 306, and down the second side 318 toward the root 330.
  • molten glass flows from the trough 302 and down through the slot 310 toward the root 330.
  • Molten glass ribbon 103 is formed as molten glass flowing over the first and second weirs 304, 306, joins molten glass flowing through the slot 310 at the root 330.
  • heating elements 350A-D are disposed in proximity to the forming device (while FIG. 6 shows four heating elements, it is to be understood that embodiments herein include those comprising greater or fewer numbers of heating elements).
  • Heating elements 350A-D may, for example, comprise electrically resistive heating elements, such as those disclosed in U.S. published patent application number 2008/0282736, the entire disclosure of which is incorporated herein by reference.
  • heating elements 350A-D are shown schematically in FIG. 6 as having rectangular or parallelogram cross-sections, it is to be understood that heating elements may have any geometrical configuration or cross- section, including circular and elliptical cross- sections.
  • Heating elements 350A-D can be configured so as to provide additional control over the temperature of molten glass flowing over the first and second weirs, 304, 306.
  • heating elements 350A-D may be configured and operated to enable the
  • heating elements 350A-D may be configured and operated such that the temperature of molten glass arriving at the root 330 from over the first and second weirs, 304, 306, is within 20°C, such as within 10°C, and further such as within 5°C of the temperature of molten glass arriving at the root 330 from the slot 310.
  • Heating elements 350A-D may be configured and operated such that the
  • temperature of molten glass arriving at the root 330 from over the first and second weirs, 304, 306, is approximately equal to the temperature of molten glass arriving at the root 330 from the slot 310. Maintaining the temperature of molten glass arriving at the root 330 from over the first and second weirs, 304, 306, within a predetermined range relative to the temperature of molten glass arriving at the root 330 from the slot 310 can, for example, enable improved glass ribbon flow and glass sheet properties.
  • embodiments disclosed herein include those in which molten glass is fed to the glass forming device 300 via a single inlet (such as inlet 141 shown in FIG. 1)
  • embodiments disclosed herein also include those comprising a first molten glass feed to the glass forming device 300 and a second molten glass feed to the glass forming device 300, wherein the first molten glass feed is configured to primarily direct molten glass flow over the first and second weirs 304, 306, and the second molten glass feed is configured to primarily direct molten glass flow into the slot 310.
  • embodiments disclosed herein include introducing a first molten glass feed to the glass forming device and a second molten glass feed to the glass forming device 300, wherein a majority of molten glass from the first molten glass feed flows over the first and second weirs 304, 306, and a majority of molten glass from the second molten glass feed flows into the slot 310.
  • the first molten glass feed will be vertically higher than the second molten glass feed.
  • At least 60%, such as at least 70%, and further such as at least 80%, and yet further such as at least 90% of the first molten glass feed, including from 60% to 99% and further including from 70% to 95% of the first molten glass feed flows over the first and second weirs 304, 306.
  • Such embodiments may include those in which, at least 60%, such as at least 70%, and further such as at least 80%, and yet further such as at least 90% of the second molten glass feed, including from 60% to 99% and further including from 70% to 95% of the second molten glass feed flows into the slot 310.
  • the composition of the first and second molten glass feeds may be the same or different.
  • the temperature of the first and second molten glass feeds may also be the same or different.
  • the temperature of the first molten glass feed may be at least somewhat higher than the temperature of the second molten glass feed, such as at least 5°C higher, and further such as at least 10° higher, including from 5°C to 100°C higher, such as from 10°C to 50°C higher.
  • Maintaining the first molten glass feed at a higher temperature than the second molten glass feed may, depending on glass composition, flow transport characteristics, and other conditions, enable more of the first molten glass feed to flow over the first and second weirs 304, 306, as a result of lower relative density at higher temperature and, hence, increased buoyancy within trough 302. Maintaining the first molten glass feed at a higher temperature than the second molten glass feed may also further enable the temperature of molten glass arriving at the root 330 from over the first and second weirs, 304, 306, to be within a predetermined temperature range relative to the temperature of molten glass arriving at the root 330 from the slot 310 without the necessity of heating elements, such as heating elements 350A-D.
  • maintaining the first molten glass feed at a predetermined higher temperature than the second molten glass feed may enable the temperature of molten glass arriving at the root 330 from over the first and second weirs, 304, 306, to be approximately equal to the temperature of molten glass arriving at the root 330 from the slot 310 without the necessity of heating elements, such as heating elements 350A-D.
  • the percentage of total flow density of molten glass introduced to the glass forming device 300 (via one or more molten glass feeds) that flows into the slot 310 (as opposed to over the weirs, 304, 306) can range from, for example, 5% to 95%, such as from 10%) to 90%, and further such as from 20% to 80%>, and yet further such as from 30%> to 70%), and still yet further such as from 40% to 60%>.
  • the area of the slot 310 extending along a length of the trough 302, relative to the total area of the bottom of the trough 302, while not limited, can range from, for example, 5% to 50%), such as from 10% to 40%, and further such as from 15% to 30%, and yet further such as from 20% to 25% of the total area of the bottom of the trough 302.
  • the glass forming device 300 may, in certain exemplary embodiments, comprise a refractory material that has minimal reactivity to the molten glass formed using the device.
  • Exemplary materials for the glass forming device include, but are not limited to an isopressed zircon-based ceramic material, such as those disclosed in US patent application publication numbers 2004/0055338 and 2005/0130830, the entire disclosures of which are incorporated herein by reference.
  • Exemplary materials for the glass forming device may also include an isopressed xenotime-based or xenotime-stabilized zircon-based ceramic material, such as those disclosed in US patent application publication number 2009/0131241, the entire disclosure of which is incorporated herein by reference.
  • Glass forming devices comprising slot 310 can be made by one of any variety of methods.
  • glass forming devices according to embodiments disclosed herein may be made by bonding two substantially mirror image halves of the glass forming device together, wherein the region comprising the slot 310 is formed, routed, or cut out of each half.
  • Methods for bonding components of glass forming devices are disclosed, for example, in U.S. patent no. 7,988,804, the entire disclosure of which is incorporated herein by reference.
  • Methods for cutting or removing material from glass forming devices are disclosed, for example, in U.S. patent publication no. 2014/0318523, the entire disclosure of which is incorporated herein by reference.
  • Embodiments disclosed herein can enable the production of glass articles, such as glass sheets, while providing at least one advantage over previously known methods, such as advantages discussed elsewhere herein. Moreover, embodiments disclosed herein can enable the production of glass articles, such as glass sheets, wherein the weight of the glass forming device 300 is significantly reduced for a given molten glass flow density relative to the weight of previously known glass forming devices. For example, for a given molten glass flow density, the weight of the glass forming device 300, may be at least 10% less, such as at least 20%) less, and further such as at least 30%> less, and yet further such as at least 40% less, including from 10%> less to 50% less than previously known glass forming devices.
  • Embodiments, disclosed herein can also enable the production of glass articles, such as glass sheets, wherein the temperature of the glass forming device 300 is lower for a given molten glass flow density relative to the weight of previously known glass forming devices.
  • the temperature of the glass forming device 300 may be at least 20°C, such as at least 50°C, and further such as at least 100°C lower, such as from 20°C to 200°C lower than previously known glass forming devices.
  • Glass articles, including glass sheets, made by methods disclosed herein can be used in a variety of applications, including flat glass panels and screens incorporated into electronic devices, such as LCD televisions and handheld electronic devices.
  • the middle portion of the glass sheet in a thickness direction will be provided from glass flowed through slot 310 whereas first and second surface areas of the glass sheets will be provided from glass flowed over weirs 304, 306.
  • at least 20% such as at least 30%>, and further such as at least 40%, and yet further such as at least 50%
  • at least 60%> including from 20% to 80%, and further including from 30% to 70% of the total thickness of the glass sheet may be provided from glass flowed through the slot 310.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Glass Melting And Manufacturing (AREA)
  • Glass Compositions (AREA)

Abstract

L'invention concerne un appareil et un procédé de formation de verre qui comprennent un dispositif de formation de verre ayant une extrémité d'admission et une extrémité de compression et un creux s'étendant entre l'extrémité d'admission et l'extrémité de compression. Le dispositif de formation de verre a des premier et second côtés qui s'étendent chacun à partir de déversoirs de chaque côté du creux vers un pied de bord du dispositif de formation de verre dans la direction verticale. Le creux a une profondeur qui diminue entre l'extrémité d'admission et l'extrémité de compression et le dispositif de formation de verre comprend en outre une fente qui s'étend le long d'au moins une longueur du creux dans la direction horizontale et s'étend à partir du creux vers le pied de bord du dispositif de formation de verre dans la direction verticale.
PCT/US2016/035136 2015-06-04 2016-06-01 Appareil et procédé de fabrication de verre avec capacité d'écoulement WO2016196534A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
KR1020177037536A KR20180006458A (ko) 2015-06-04 2016-06-01 플로우 쓰루가 가능한 유리 제조 장치 및 방법
CN201680032554.7A CN107683264A (zh) 2015-06-04 2016-06-01 具有流通能力的玻璃制造设备和方法
JP2017562609A JP2018527272A (ja) 2015-06-04 2016-06-01 フロースルー機能を有するガラス製造装置および方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201562170873P 2015-06-04 2015-06-04
US62/170,873 2015-06-04

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WO2016196534A1 true WO2016196534A1 (fr) 2016-12-08

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PCT/US2016/035136 WO2016196534A1 (fr) 2015-06-04 2016-06-01 Appareil et procédé de fabrication de verre avec capacité d'écoulement

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JP (1) JP2018527272A (fr)
KR (1) KR20180006458A (fr)
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TW (1) TW201710195A (fr)
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Publication number Priority date Publication date Assignee Title
WO2019018670A1 (fr) * 2017-07-21 2019-01-24 Corning Incorporated Procédé et appareil de transfert de chaleur de ruban de verre réglable
WO2020033387A1 (fr) * 2018-08-10 2020-02-13 Corning Incorporated Appareil et procédés pour la fabrication d'un ruban de verre
US12162789B2 (en) 2018-08-10 2024-12-10 Corning Incorporated Methods and apparatus for forming laminated glass sheets

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JP2001031434A (ja) * 1999-07-19 2001-02-06 Nippon Electric Glass Co Ltd 板ガラスの成形方法および成形装置
US20080202164A1 (en) * 2007-02-23 2008-08-28 Hoysan Steven F Isopipe design feature to reduce sag
JP2009035466A (ja) * 2007-08-03 2009-02-19 Furuya Kinzoku:Kk ガラス製造装置の成形部及びガラス成形品の製造方法
JP2011178657A (ja) * 2010-02-26 2011-09-15 Corning Inc エッジディレクタからの熱損失を低減させる方法および装置
US20120234050A1 (en) * 2003-04-04 2012-09-20 Bocko Peter L High-strength laminated sheet for optical applications

Patent Citations (5)

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Publication number Priority date Publication date Assignee Title
JP2001031434A (ja) * 1999-07-19 2001-02-06 Nippon Electric Glass Co Ltd 板ガラスの成形方法および成形装置
US20120234050A1 (en) * 2003-04-04 2012-09-20 Bocko Peter L High-strength laminated sheet for optical applications
US20080202164A1 (en) * 2007-02-23 2008-08-28 Hoysan Steven F Isopipe design feature to reduce sag
JP2009035466A (ja) * 2007-08-03 2009-02-19 Furuya Kinzoku:Kk ガラス製造装置の成形部及びガラス成形品の製造方法
JP2011178657A (ja) * 2010-02-26 2011-09-15 Corning Inc エッジディレクタからの熱損失を低減させる方法および装置

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019018670A1 (fr) * 2017-07-21 2019-01-24 Corning Incorporated Procédé et appareil de transfert de chaleur de ruban de verre réglable
WO2020033387A1 (fr) * 2018-08-10 2020-02-13 Corning Incorporated Appareil et procédés pour la fabrication d'un ruban de verre
US20210300808A1 (en) * 2018-08-10 2021-09-30 Corning Incorporated Apparatus and methods for fabricating a glass ribbon
US12162789B2 (en) 2018-08-10 2024-12-10 Corning Incorporated Methods and apparatus for forming laminated glass sheets

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CN107683264A (zh) 2018-02-09
KR20180006458A (ko) 2018-01-17
TW201710195A (zh) 2017-03-16
JP2018527272A (ja) 2018-09-20

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