WO2019245773A1 - Feuilles de verre à adhérence de particules réduite - Google Patents

Feuilles de verre à adhérence de particules réduite Download PDF

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Publication number
WO2019245773A1
WO2019245773A1 PCT/US2019/036250 US2019036250W WO2019245773A1 WO 2019245773 A1 WO2019245773 A1 WO 2019245773A1 US 2019036250 W US2019036250 W US 2019036250W WO 2019245773 A1 WO2019245773 A1 WO 2019245773A1
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WO
WIPO (PCT)
Prior art keywords
chamber
glass
glass sheet
atmosphere
water content
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.)
Ceased
Application number
PCT/US2019/036250
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English (en)
Inventor
Jun Yuan HOU
Ching Yao Wang
Yu-Ting Weng
Tsung-Yu Yang
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.)
Corning Inc
Original Assignee
Corning Inc
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 Inc filed Critical Corning Inc
Publication of WO2019245773A1 publication Critical patent/WO2019245773A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B11/00—Cleaning flexible or delicate articles by methods or apparatus specially adapted thereto
    • B08B11/04—Cleaning flexible or delicate articles by methods or apparatus specially adapted thereto specially adapted for plate glass, e.g. prior to manufacture of windshields
    • 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
    • C03C23/00—Other surface treatment of glass not in the form of fibres or filaments
    • C03C23/0075—Cleaning of glass

Definitions

  • the present disclosure relates generally to glass sheets with reduced particle adhesion and more particularly to methods and apparatuses for processing glass sheets with reduced particle adhesion.
  • Embodiments disclosed herein include a method for processing a glass sheet.
  • the method includes transporting the glass sheet into a chamber comprising an inner atmosphere.
  • the inner atmosphere comprises a water content of no more than 50% of a water content of an atmosphere surrounding the chamber and a pressure that is higher than a pressure of the atmosphere surrounding the chamber.
  • the method also includes maintaining the glass sheet in the chamber for a period of time.
  • the method includes transporting the glass sheet out of the chamber.
  • the method also includes washing the glass sheet in a washing step.
  • An adhered glass particle density on a major surface of the glass sheet transported out of the chamber and washed in the washing step is lower than the adhered glass particle density on a major surface of the glass sheet maintained for the period of time in a comparative atmosphere and washed in the washing step.
  • the comparative atmosphere has the same water content and pressure as the atmosphere surrounding the chamber.
  • Embodiments disclosed herein also include an apparatus for processing a glass sheet.
  • the apparatus includes a chamber comprising an inner atmosphere.
  • the inner atmosphere comprises a water content of no more than 50% of a water content of an atmosphere surrounding the chamber and a pressure that is higher than a pressure of the atmosphere surrounding the chamber.
  • the chamber is configured to maintain the glass sheet in the atmosphere for a period of time.
  • FIG. l is a schematic view of an example fusion down draw glass making apparatus and process
  • FIG. 2 is a perspective view of a glass sheet
  • FIG. 3 is a schematic side view of a portion of a glass sheet processing apparatus including a chamber and a glass sheet conveyor;
  • FIG. 4 is a schematic top view of the portion of the glass sheet processing apparatus shown in FIG. 3;
  • FIG. 5 is a schematic side view of a portion of a glass sheet processing apparatus including a chamber and a transition area
  • FIG. 6 is a schematic side view of a portion of a glass sheet processing apparatus including a chamber, a transition area, and a wash station
  • FIG. 7 is a chart showing adhered glass particle density on glass sheets under a variety of conditions.
  • Ranges can be expressed herein as from“about” one particular value, and/or to “about” another particular value. When such a range is expressed, another embodiment includes from the one particular value and/or to the other particular value. Similarly, when values are expressed as approximations, for example by use of the antecedent“about,” it will be understood that the particular value forms another embodiment. It will be further understood that the endpoints of each of the ranges are significant both in relation to the other endpoint, and independently of the other endpoint.
  • the term“chamber” refers to glass processing component having an at least partially enclosed area comprising an inner atmosphere that is capable of holding or storing at least one glass sheet for a period of time.
  • the term“atmosphere” refers to a primarily gaseous fluid of an area or region, such as a primarily gaseous fluid in an at least partially enclosed area of a chamber (“inner atmosphere”) or a primarily gaseous fluid surrounding the chamber.
  • washing step refers to a step involving washing at least one major surface of a glass sheet.
  • the washing can, for example, include contacting a fluid, such as a gas or liquid, with at least one major surface of the glass sheet such as by, for example, spraying, dipping, rolling, or ultrasonic washing.
  • the term“adhered glass particle density” refers to the measured density in particles per square meter (pcs/m 2 ) of particles identified as adhered glass according to the Adhered Glass Particle Density Measurement Technique as described herein.
  • high velocity gas flow refers to a primarily gaseous fluid, such as air, flowed through at least one orifice, such as a nozzle or air knife, at a velocity of at least about 5 meters per second (m/s).
  • the glass manufacturing apparatus 10 can comprise a glass melting furnace 12 that can include a melting vessel 14.
  • glass melting furnace 12 can optionally include one or more additional components such as heating elements (e.g., combustion burners or electrodes) that heat raw materials and convert the raw materials into molten glass.
  • heating elements e.g., combustion burners or electrodes
  • glass melting furnace 12 may include thermal
  • glass melting furnace 12 may include electronic devices and/or electromechanical devices that facilitate melting of the raw materials into a glass melt. Still further, glass melting furnace 12 may include support structures (e.g., support chassis, support member, etc.) or other components.
  • Glass melting vessel 14 is typically comprised of refractory material, such as a refractory ceramic material, for example a refractory ceramic material comprising alumina or zirconia. In some examples glass melting vessel 14 may be constructed from refractory ceramic bricks. Specific embodiments of glass melting vessel 14 will be described in more detail below.
  • the glass melting furnace may be incorporated as a component of a glass manufacturing apparatus to fabricate a glass substrate, for example a glass ribbon of a continuous length.
  • the glass melting furnace of the disclosure may be incorporated as a component of a glass manufacturing apparatus comprising a slot draw apparatus, a float bath apparatus, a down-draw apparatus such as a fusion process, an up- draw apparatus, a press-rolling apparatus, a tube drawing apparatus or any other glass manufacturing apparatus that would benefit from the aspects disclosed herein.
  • FIG. 1 schematically illustrates glass melting furnace 12 as a component of a fusion down-draw glass manufacturing apparatus 10 for fusion drawing a glass ribbon for subsequent processing into individual glass sheets.
  • the glass manufacturing apparatus 10 can optionally include an upstream glass manufacturing apparatus 16 that is positioned upstream relative to glass melting vessel 14. In some examples, a portion of, or the entire upstream glass manufacturing apparatus 16, may be incorporated as part of the glass melting furnace 12
  • the upstream glass manufacturing apparatus 16 can include a storage bin 18, a raw material delivery device 20 and a motor 22 connected to the raw material delivery device.
  • Storage bin 18 may be configured to store a quantity of raw materials 24 that can be fed into melting vessel 14 of glass melting furnace 12, as indicated by arrow 26.
  • Raw materials 24 typically comprise one or more glass forming metal oxides and one or more modifying agents.
  • raw material delivery device 20 can be powered by motor 22 such that raw material delivery device 20 delivers a predetermined amount of raw materials 24 from the storage bin 18 to melting vessel 14.
  • motor 22 can power raw material delivery device 20 to introduce raw materials 24 at a controlled rate based on a level of molten glass sensed downstream from melting vessel 14.
  • Raw materials 24 within melting vessel 14 can thereafter be heated to form molten glass 28.
  • Glass manufacturing apparatus 10 can also optionally include a downstream glass manufacturing apparatus 30 positioned downstream relative to glass melting furnace 12.
  • a portion of downstream glass manufacturing apparatus 30 may be incorporated as part of glass melting furnace 12.
  • first connecting conduit 32 discussed below, or other portions of the downstream glass manufacturing apparatus 30, may be incorporated as part of glass melting furnace 12.
  • Elements of the downstream glass manufacturing apparatus, including first connecting conduit 32 may be formed from a precious metal. Suitable precious metals include platinum group metals selected from the group of metals consisting of platinum, iridium, rhodium, osmium, ruthenium and palladium, or alloys thereof.
  • downstream components of the glass manufacturing apparatus may be formed from a platinum-rhodium alloy including from about 70 to about 90% by weight platinum and about 10% to about 30% by weight rhodium.
  • platinum-rhodium alloy including from about 70 to about 90% by weight platinum and about 10% to about 30% by weight rhodium.
  • suitable metals can include molybdenum, palladium, rhenium, tantalum, titanium, tungsten and alloys thereof.
  • Downstream glass manufacturing apparatus 30 can include a first conditioning (i.e., processing) vessel, such as fining vessel 34, located downstream from melting vessel 14 and coupled to melting vessel 14 by way of the above-referenced first connecting conduit 32.
  • a first conditioning (i.e., processing) vessel such as fining vessel 34
  • molten glass 28 may be gravity fed from melting vessel 14 to fining vessel 34 by way of first connecting conduit 32.
  • gravity may cause molten glass 28 to pass through an interior pathway of first connecting conduit 32 from melting vessel 14 to fining vessel 34.
  • other conditioning vessels may be positioned downstream of melting vessel 14, for example between melting vessel 14 and fining vessel 34.
  • a conditioning vessel may be employed between the melting vessel and the fining vessel wherein molten glass from a primary melting vessel is further heated to continue the melting process, or cooled to a temperature lower than the temperature of the molten glass in the melting vessel before entering the fining vessel.
  • Bubbles may be removed from molten glass 28 within fining vessel 34 by various techniques.
  • raw materials 24 may include multivalent compounds (i.e. fining agents) such as tin oxide that, when heated, undergo a chemical reduction reaction and release oxygen.
  • fining agents include without limitation arsenic, antimony, iron and cerium.
  • Fining vessel 34 is heated to a temperature greater than the melting vessel temperature, thereby heating the molten glass and the fining agent. Oxygen bubbles produced by the temperature-induced chemical reduction of the fining agent(s) rise through the molten glass within the fining vessel, wherein gases in the molten glass produced in the melting furnace can diffuse or coalesce into the oxygen bubbles produced by the fining agent.
  • Downstream glass manufacturing apparatus 30 can further include another
  • conditioning vessel such as a mixing vessel 36 for mixing the molten glass.
  • Mixing vessel 36 may be located downstream from the fining vessel 34.
  • Mixing vessel 36 can be used to provide a homogenous glass melt composition, thereby reducing cords of chemical or thermal inhomogeneity that may otherwise exist within the fined molten glass exiting the fining vessel.
  • fining vessel 34 may be coupled to mixing vessel 36 by way of a second connecting conduit 38.
  • molten glass 28 may be gravity fed from the fining vessel 34 to mixing vessel 36 by way of second connecting conduit 38. For instance, gravity may cause molten glass 28 to pass through an interior pathway of second connecting conduit 38 from fining vessel 34 to mixing vessel 36.
  • mixing vessel 36 is shown downstream of fining vessel 34, mixing vessel 36 may be positioned upstream from fining vessel 34.
  • downstream glass manufacturing apparatus 30 may include multiple mixing vessels, for example a mixing vessel upstream from fining vessel 34 and a mixing vessel downstream from fining vessel 34. These multiple mixing vessels may be of the same design, or they may be of different designs.
  • Downstream glass manufacturing apparatus 30 can further include another
  • delivery vessel 40 may condition molten glass 28 to be fed into a downstream forming device.
  • delivery vessel 40 can act as an accumulator and/or flow controller to adjust and/or provide a consistent flow of molten glass 28 to forming body 42 by way of exit conduit 44.
  • mixing vessel 36 may be coupled to delivery vessel 40 by way of third connecting conduit 46.
  • molten glass 28 may be gravity fed from mixing vessel 36 to delivery vessel 40 by way of third connecting conduit 46. For instance, gravity may drive molten glass 28 through an interior pathway of third connecting conduit 46 from mixing vessel 36 to delivery vessel 40.
  • Downstream glass manufacturing apparatus 30 can further include forming apparatus 48 comprising the above-referenced forming body 42 and inlet conduit 50.
  • Exit conduit 44 can be positioned to deliver molten glass 28 from delivery vessel 40 to inlet conduit 50 of forming apparatus 48.
  • exit conduit 44 may be nested within and spaced apart from an inner surface of inlet conduit 50, thereby providing a free surface of molten glass positioned between the outer surface of exit conduit 44 and the inner surface of inlet conduit 50.
  • Forming body 42 in a fusion down draw glass making apparatus can comprise a trough 52 positioned in an upper surface of the forming body and converging forming surfaces 54 that converge in a draw direction along a bottom edge 56 of the forming body.
  • Molten glass delivered to the forming body trough via delivery vessel 40, exit conduit 44 and inlet conduit 50 overflows side walls of the trough and descends along the converging forming surfaces 54 as separate flows of molten glass.
  • the separate flows of molten glass join below and along bottom edge 56 to produce a single ribbon of glass 58 that is drawn in a draw or flow direction 60 from bottom edge 56 by applying tension to the glass ribbon, such as by gravity, edge rolls 72 and pulling rolls 82, to control the dimensions of the glass ribbon as the glass cools and a viscosity of the glass increases. Accordingly, glass ribbon 58 goes through a visco-elastic transition and acquires mechanical properties that give the glass ribbon 58 stable dimensional characteristics.
  • Glass ribbon 58 may, in some embodiments, be separated into individual glass sheets 62 by a glass separation apparatus 100 in an elastic region of the glass ribbon.
  • a robot 64 may then transfer the individual glass sheets 62 to a conveyor system using gripping tool 65, whereupon the individual glass sheets may be further processed.
  • FIG. 2 shows a perspective view of a glass sheet 62 having a first major surface 162, a second major surface 164 extending in a generally parallel direction to the first major surface (on the opposite side of the glass sheet 62 as the first major surface) and an edge surface 166 extending between the first major surface 162 and the second major surface 164 and extending in a generally perpendicular direction to the first and second major surfaces 162, 164.
  • Further processing of glass sheets 62 may, for example, include grinding, polishing, and/or beveling of edge surfaces 166 and/or treating or washing at least one of first and second major surfaces 162, 164.
  • Such glass sheets 62 may also be divided into smaller glass sheets 62.
  • Such storage may cause certain adverse effects to the quality of the glass sheets, including increased adherence of small glass particles on at least one of first and second major surfaces 162, 164.
  • Such glass particles can, for example, be generated during certain processing steps, including the separation of glass ribbon 58 into individual glass sheets 62 as well grinding, polishing, and/or beveling steps.
  • FIGS. 3 and 4 show, respectively, schematic side and top views of a portion of a glass sheet processing apparatus including a chamber 200 and a glass sheet conveyor 300.
  • Chamber 200 includes an entrance 202 through which one or more glass sheets 62 can be transported into the chamber 200.
  • Chamber 200 also includes channels 204 through which a fluid may be flowed.
  • chamber 200 includes humidity sensors 206.
  • Glass sheets 62 can be transported out of chamber 200 through action of conveyor 300.
  • Conveyor 300 can include any conveyance mechanism known to persons having ordinary skill in the art including but not limited to rolling-based mechanisms, sliding-based mechanisms, and levitation-based mechanisms, such as air bearings.
  • glass sheet 62 in FIGS. 2 and 3 is shown being conveyed in a generally horizontal direction, embodiments disclosed herein include conveyance mechanisms in which glass sheets are conveyed in other directions, such as a vertical direction.
  • Chamber 200 encloses an inner atmosphere 208.
  • the inner atmosphere 208 comprises a water content (i.e., water vapor content) of no more than 50%, such as no more than 40%, and further such as no more than 30%, including between 10% and 50%, and further including between 20% and 40% of a water content of an atmosphere surrounding the chamber 210.
  • the inner atmosphere 208 also comprises a pressure that is higher than a pressure of the atmosphere surrounding the chamber 210, such as a pressure of at least about 1 KPa, such as at least about 2 KPa, and further such as at least about 5 KPa, and yet further such as at least about 10 KPa, including from about lKPa to about 20 KPa and further including from about 2 KPa to about 10 KPa higher than a pressure of the atmosphere surrounding the chamber 210.
  • a pressure of the atmosphere surrounding the chamber 210 such as a pressure of at least about 1 KPa, such as at least about 2 KPa, and further such as at least about 5 KPa, and yet further such as at least about 10 KPa, including from about lKPa to about 20 KPa and further including from about 2 KPa to about 10 KPa higher than a pressure of the atmosphere surrounding the chamber 210.
  • the lower water content (i.e., lower relative humidity) and higher pressure of the inner atmosphere 208 relative to the atmosphere surrounding the chamber 210 can be established by flowing a fluid, such as at least partially dehumidified air, through channels 204 and into inner atmosphere 208 of chamber 200.
  • a fluid such as at least partially dehumidified air
  • the fluid flowing through channels 204 can have a water content that is less than or equal to than the desired water content of the inner atmosphere 208, such as a water content of no more than 50%, such as no more than 40%, and further such as no more than 30%, including between 10% and 50%, and further including between 20% and 40% of a water content of an atmosphere surrounding the chamber 210.
  • the temperature of the inner atmosphere 208 ranges from about 20°C to about 35°C and the water content of the inner atmosphere is less than or equal to about 10 grams of water vapor per kilogram of air, such as from about 5 to about 10 grams of water vapor per kilogram of air.
  • a plurality of glass sheets 62 are held in chamber 200.
  • the period of time for which glass sheets 62 may be held or maintained in chamber 200 may, for example, be at least about 3 hours, such as at least about 6 hours, and further such as at least about 12 hours, and still yet further such as at least about 24 hours, including from about 3 hours to about 240 hours, such as from about 6 hours to about 120 hours, and further such as from about 12 hours to about 60 hours.
  • Entrance 202 through which one or more glass sheets 62 can be transported into the chamber 200 can have a gap height H that is no more than four times a thickness of the glass sheet 62. For example, if the glass sheet 62 has a thickness of less than or equal to about 0.5 millimeters, entrance 202 can have a gap height H that is less than or equal to about 2 millimeters. Minimization of gap height H of entrance 202 can help mitigate diffusion of atmosphere surrounding the chamber 210 into inner atmosphere 208.
  • Chamber 200 may comprise any sufficiently rigid material suitable holding or storing glass sheets 62 for a period of time while minimizing diffusion or permeation of atmosphere surrounding the chamber 210 into inner atmosphere 208.
  • chamber 200 may comprise a metal, such as aluminum, and may further comprise a coated metal, such as a metal, such as aluminum, coated with a scratch resistant material, such as Teflon.
  • Area around entrance 202 may comprise a rigid or flexible material.
  • flexible material may comprise a plastic material, such as polyvinyl chloride (PVC), polypropylene (PP), acrylonitrile butadiene styrene (ABS), or an acrylic material.
  • chamber 200 can include at least one humidity sensor 206.
  • the water content of the inner atmosphere 208 can be controlled using the at least one humidity sensor 206.
  • at least one humidity sensor 206 can be used as a component of a feedback control mechanism that measures the water content or humidity of the inner atmosphere 208 and then controls or adjusts the flow of fluid through channels 204 in response to the measured water content or humidity of inner atmosphere 208.
  • FIG. 5 shows a schematic side view of a portion of a glass sheet processing apparatus including a chamber 200 and a transition area 400.
  • glass sheet 62 is transported out of the chamber 200 and into the transition area 400.
  • Transition area comprises a high velocity gas flow, which can be flowed through a high velocity gas flow orifice 402, such as a nozzle or air knife.
  • the velocity of high velocity gas flow can, for example, range from about 5 meters per second to about 30 meters per second, such as from about 10 meters per second to about 20 meters per second.
  • Transition area 400, including high velocity gas flow can further prevent diffusion of atmosphere surrounding the chamber 210 into inner atmosphere 208.
  • FIG. 6 is shows schematic side view of a portion of a glass sheet processing apparatus including a chamber 200, a transition area 400, and a wash station 500.
  • glass sheet 62 is transported out of transition area 400 and into wash station 500 wherein a washing step may be performed on the glass sheet 62.
  • Wash station 500 comprises at least one wash orifice 502 for flowing at least one washing fluid on or in the vicinity of glass sheet 62.
  • At least one washing fluid may comprise at least one liquid or gaseous fluid useable for washing glass sheets 62.
  • Exemplary washing fluids include water, including deionized water and water comprising at least one detergent or surfactant.
  • Embodiments disclosed herein can include those in which at least one glass sheet 62 is maintained in chamber 200 for a period of time and an adhered glass particle density on a major surface of the glass sheet 62 transported out of the chamber 200 and washed in a washing step is lower than the adhered glass particle density on a major surface of the glass sheet 62 maintained for the period of time in a comparative atmosphere and washed in the washing step, the comparative atmosphere having the same water content and pressure as the atmosphere surrounding the chamber 210.
  • an adhered glass particle density on a major surface of the glass sheet 62 transported out of the chamber 200 and washed in the washing step is at least about 50% lower, such as at least about 75% lower, and further such as at least about 85% lower, and still further such as at least about 90% lower, including from about 50% lower to about 95% lower, and further including from about 75% lower to about 90% lower than the adhered glass particle density on a major surface of the glass sheet maintained for the period of time in the comparative atmosphere and washed in the washing step.
  • Adhered glass particle density was determined by counting the number of particles identified as adhered glass within a given area and then calculating the measured density in particles per square meter (pcs/m 2 ) based on the counted particles in the given area. Particles were counted by scanning an entire sheet of glass using a camera and an autofocusing system as described in US patent no. 6,396,039, the entire disclosure of which is incorporated herein by reference, and then counting the number of particles determined by the observer to be adhered glass within images captured by the camera.
  • Adhered glass particle density was determined for six different experimental conditions. Specifically, sheets of Eagle XG ® glass having a thickness of about 0.5 millimeters and major surface area of about 1950 millimeters by 2250 millimeters were stored in a chamber under the following conditions: (1) storage time of about 3 hours at a temperature of about 25°C and an inner atmosphere relative humidity of about 80-90%; (2) storage time of about 3 hours at a temperature of about 25°C and an inner atmosphere relative humidity of about 30-45%; (3) storage time of about 6 hours at a temperature of about 25°C and an inner atmosphere relative humidity of about 80-90%; (4) storage time of about 6 hours at a temperature of about 25°C and an inner atmosphere relative humidity of about 30-45%; (5) storage time of about 12 hours at a temperature of about 25°C and an inner atmosphere relative humidity of about 80-90%; and (6) storage time of about 12 hours at a temperature of about 25°C and an inner atmosphere relative humidity of about 30-45%. Following storage in the chamber, the sheets were washed, dried,
  • sheets stored at a relative humidity of about 30-45% showed significantly lower adhered glass particle density (ADG density) than sheets stored at a relative humidity of about 80-90% at each of the 3 hour, 6 hour, and 12 hour time periods.
  • ADG density adhered glass particle density
  • sheets stored for the 3 hour time period at about 30-45% relative humidity showed about a 90% reduction in adhered glass particle density as compared to sheets stored for the 3 hour time period at about 80-90% relative humidity.
  • Sheets stored for the 6 hour time period at about 30-45% relative humidity showed about an 85% reduction in adhered glass particle density as compared to sheets stored for the 6 hour time period at about 80-90% relative humidity.
  • sheets stored for the 12 hour time period at about 30-45% relative humidity showed about a 90% reduction in adhered glass particle density as compared to sheets stored for the 12 hour time period at about 80-90% relative humidity.
  • the about 80-90% relative humidity condition is meant to approximate a condition of a comparative atmosphere having the same water content and pressure as the atmosphere surrounding the chamber, the examples show that when the relative humidity or water content of the inner atmosphere is reduced by at least about 50% relative to that condition, a substantial reduction of adhered glass particle density on a major surface of the glass sheets can be achieved.
  • This in turn, can enable the production of glass sheets used, for example, in electronic devices, having a minimal presence of adhered glass particles that may adversely affect display resolution.

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Surface Treatment Of Glass (AREA)

Abstract

L'invention concerne un procédé de traitement d'une feuille de verre comprenant le transport de la feuille de verre dans une chambre ayant une atmosphère interne avec une teneur en eau qui est inférieure à une teneur en eau d'une atmosphère entourant la chambre. Une densité de particules de verre adhérées sur une surface principale de la feuille de verre transportée hors de la chambre et lavée dans une étape de lavage est inférieure à la densité de particules de verre adhérées sur une surface principale de la feuille de verre maintenue pendant la période de temps dans une atmosphère comparative.
PCT/US2019/036250 2018-06-19 2019-06-10 Feuilles de verre à adhérence de particules réduite Ceased WO2019245773A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201862686721P 2018-06-19 2018-06-19
US62/686,721 2018-06-19

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WO2019245773A1 true WO2019245773A1 (fr) 2019-12-26

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100532512B1 (ko) * 2003-04-09 2005-11-30 (주)에스티아이 디스플레이 패널 상의 유기물 세정방법 및 그 장치
JP2007300129A (ja) * 2001-11-12 2007-11-15 Tokyo Electron Ltd 基板処理装置
KR20080071640A (ko) * 2007-01-31 2008-08-05 세메스 주식회사 기판 건조 방법 및 이를 수행하기 위한 장치
KR20080071676A (ko) * 2007-01-31 2008-08-05 세메스 주식회사 기판 처리 장치 및 방법
US20140113083A1 (en) * 2011-11-30 2014-04-24 Corning Incorporated Process for making of glass articles with optical and easy-to-clean coatings

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007300129A (ja) * 2001-11-12 2007-11-15 Tokyo Electron Ltd 基板処理装置
KR100532512B1 (ko) * 2003-04-09 2005-11-30 (주)에스티아이 디스플레이 패널 상의 유기물 세정방법 및 그 장치
KR20080071640A (ko) * 2007-01-31 2008-08-05 세메스 주식회사 기판 건조 방법 및 이를 수행하기 위한 장치
KR20080071676A (ko) * 2007-01-31 2008-08-05 세메스 주식회사 기판 처리 장치 및 방법
US20140113083A1 (en) * 2011-11-30 2014-04-24 Corning Incorporated Process for making of glass articles with optical and easy-to-clean coatings

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