WO2016134655A1 - Moulage du verre assisté par application d'un vide et procédés d'utilisation - Google Patents

Moulage du verre assisté par application d'un vide et procédés d'utilisation Download PDF

Info

Publication number
WO2016134655A1
WO2016134655A1 PCT/CN2016/074409 CN2016074409W WO2016134655A1 WO 2016134655 A1 WO2016134655 A1 WO 2016134655A1 CN 2016074409 W CN2016074409 W CN 2016074409W WO 2016134655 A1 WO2016134655 A1 WO 2016134655A1
Authority
WO
WIPO (PCT)
Prior art keywords
vacuum
glass object
molding apparatus
shaped surface
glass
Prior art date
Application number
PCT/CN2016/074409
Other languages
English (en)
Inventor
Jack Y. DING
Eric Chan
Frank Hung
Original Assignee
Kornerstone Materials Technology Company, Ltd.
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 Kornerstone Materials Technology Company, Ltd. filed Critical Kornerstone Materials Technology Company, Ltd.
Publication of WO2016134655A1 publication Critical patent/WO2016134655A1/fr

Links

Images

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
    • 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
    • C03B23/02—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

Definitions

  • the present invention relates to a method of bend molding glass using a vacuum-molding apparatus, and a vacuum-molding apparatus designed for use in bend molding.
  • the vacuum-molding apparatus may find application in manufacturing curved glasses and flat glasses having curved portions.
  • Tg glass transition temperature
  • Ts softening temperature
  • bend molding One of the most common techniques for forming curved glass is bend molding. During typically bend molding, the portion of a glass object to be bent is softened by heating, and then a force is applied to change the shape of the glass object. A bend molded object is formed as the glass cools.
  • the present invention provides a method of bend molding a glass object.
  • the method of bend molding a glass object includes heating a glass object to an operating temperature to provide a heated glass object; bringing the heated glass object into contact with a shaped surface of a vacuum-molding apparatus, wherein the shaped surface comprises at least one suction hole; molding the heated glass object by applying suction to the heated glass object through the at least one suction hole to provide a molded glass object; and cooling the molded glass object to a temperature below the operating temperature while maintaining contact between the molded glass object and the shaped surface of the vacuum-molding apparatus.
  • the method further includes removing the molded glass object from the vacuum-molding apparatus.
  • the method further includes applying heat during molding to the heated glass object from at least one heat source located on the shaped surface.
  • the method further includes applying heat during molding to the heated glass object from an external heat source.
  • at least one embossing pattern is located on the shaped surface of the vacuum-molding apparatus.
  • suction is applied through the suction holes which are connected to a vacuum pump.
  • the molded glass object has at least one 2.5 D or 3D molded surface.
  • the glass object includes at least one 2D surface.
  • the method further includes bending the heated glass object to fit the vacuum-molding apparatus before bringing the heated glass object into contact with the shaped surface of the vacuum-molding apparatus.
  • the present invention provides a vacuum- molding apparatus.
  • the mold comprising at least one shaped surface and at least one suction hole on the at least one shaped surface, wherein the at least one suction hole is connected to a vacuum pump to apply suction from the vacuum pump to the at least one suction hole.
  • the mold further includes at least one heat source located on the at least one shaped surface.
  • the vacuum-molding apparatus is connected to an external heat source.
  • the mold further includes at least one embossing pattern located on the at least one shaped surface.
  • Figure 1 contains a schematic depiction of an embodiment of a vacuum-molding apparatus during an embodiment of a molding step.
  • Figure 2 contains a schematic depiction of a vacuum-molding apparatus where gravity and vacuum are applied to an embodiment of the molding step.
  • operating temperature refers to the temperature at which a heated glass object can be safely bent and molded. Unless otherwise noted, the operating temperature is between the glass transition temperature (Tg) and the softening temperature (Ts) of the glass being molded.
  • shaped surface refers to a surface area of the vacuum molding apparatus that is at least partially curved or non-planar.
  • the phrase “on the shaped surface” refers to a location that is within the area defined by the shaped surface and on the surface of the shaped surface, such that the part of the vacuum-molding apparatus in question is capable of interacting with the glass being bend molded.
  • the term “2 D” refers to a surface that is flat.
  • 2.5 D refers to a surface that is predominately flat, but contains at least one curved portion.
  • 3D refers to a surface that is predominately curved.
  • the vacuum-molding apparatus 101 includes a mold having a shaped surface 107 with suction holes 104 disposed in the shaped surface 107.
  • the suction holes 104 are connected to a vacuum pump 103 via a suction line 102.
  • the vacuum-molding apparatus 101 includes a heat source 105 located on the shaped face 107.
  • the vacuum-molding apparatus 101 includes an embossing pattern 106 located on the shaped surface 107.
  • a glass object such as a plate glass
  • a glass object can be heated to an operating temperature to form a heated glass object 100.
  • force is applied to the heated glass object 100 to bend the glass object to fit the shaped surface 107 of the vacuum-molding apparatus 101.
  • the heated glass object 100 is placed into contact with the shaped surface 107 of the vacuum-molding device 101 such that the heated glass object 100 partially fits to the vacuum-molding apparatus 101.
  • the heated glass object 100 Prior to placement of the heated glass object 100 on the shaped surface 107 of the vacuum-molding device, the heated glass object 100 has not yet reached the finished product specifications in term of accuracy.
  • the vacuum pump 103 is then actuated so as to exert suction on the heated glass object 100 through the suction holes 104 via the suction line 102.
  • the suction exerted on the heated glass object 100 through the suction holes 104 forces the heated glass object 100 to conform to the contours of the shaped surface 107 of the vacuum-molding apparatus 101.
  • the vacuum-molding apparatus 101 includes heat source 105 for applying heat to the heated glass object 100 to maintain the operating temperature of the heated glass object 100 and to minimize heating and cooling differences.
  • the heated glass object 100 After the heated glass object 100 reaches the finished product specifications, the heated glass object 100 is cooled. Following cooling, a molded glass object with a curved surface (2.5D or 3D) is formed. To minimize adhesion, the molded glass object can be removed from the vacuum-molding apparatus 101 at a temperature that is slightly lower than the operating temperature. The curved glass can be formed through a general cooling procedure. Furthermore, the vacuum-molding apparatus 101 may be designed with an embossing pattern 106, which can press a pattern into the heated glass object 100 during molding.
  • a vacuum-molding apparatus 201 which includes a mold having a shaped surface 207 with suction holes 204 disposed in the shaped surface 207.
  • the suction holes 204 are connected to a vacuum pump 203 via a suction line 202.
  • the vacuum-molding apparatus 201 includes a heat source 205 located on the shaped face 207.
  • the vacuum-molding apparatus 201 includes an embossing pattern 206 located on the shaped surface 207.
  • the method of bending glass can orient the vacuum-molding apparatus such that gravity applies a force that assists in bending the heated glass object to fit the shaped surface of the vacuum-molding apparatus.
  • the vacuum-molding apparatus 201 includes a shaped surface 207 that is oriented upward relative to the gravitational pull of the earth.
  • a glass object such as plate glass
  • the heated glass object 200 can be brought into contact with the shaped surface 207 of the vacuum-molding apparatus 201, such that the force of gravity assists in bending the heated glass object 200 to fit the shaped surface 207.
  • the heated glass object 200 Prior to placement of the heated glass object 200 on the shaped surface 207 of the vacuum-molding device, the heated glass object 200 has not yet reached the finished product specifications in term of accuracy.
  • the vacuum pump 203 can pass suction through the suction line 202 to the suction holes 204.
  • the force of the suction exerted by the vacuum pump 203 on the heated glass object 200 through the suction holes 204 forces the heated glass object 200 to conform to the contours of the shaped surface 207 of the vacuum-molding apparatus 201.
  • suction By applying suction to the heated glass object 200, a molded glass object is produced that has more precise angles and thickness than if a vacuum is not applied.
  • the vacuum-molding apparatus includes heat sources 205 that apply heat to the heated glass object 200 to maintain the heated glass object 200 at the operating temperature and to minimize heating and cooling differences.
  • the heated glass object 200 After the heated glass object 200 reaches the finished product specifications, the heated glass object 200 is cooled. Following cooling, a molded glass object with a curved surface (2.5D or 3D) is formed. To minimize adhesion, the molded glass object can be removed from the vacuum-molding apparatus 201 at a temperature that is slightly lower than the operating temperature. The curved glass can be formed through a general cooling procedure. Furthermore, the vacuum-molding apparatus 201 may be designed with an embossing pattern 206, which can press a pattern into the heated glass object 200 during molding.
  • the present invention provides a method of bend molding a glass object.
  • the method of bend molding a glass object includes heating a glass object to an operating temperature to provide a heated glass object.
  • the glass object can be a glass sheet or any glass material having proportions capable of being bend molded.
  • the material of the glass object can be any glass. Examples of suitable glass include, aluminosilicate glass, borophosphosilicate glass, fluorophosphate glass, fluorosilicate glass, quartz, phosphate glass, phosphosilicate glass, soda-lime glass, sodium silicate, and the like.
  • the operating temperature of the glass object depends upon the glass in question.
  • suitable temperatures for the operating temperature include a range from about 550°C to about 750°C, including from about 600°C to about 700°C, from about 650°C to about 700°C, and from about 600°C to about 650°C.
  • the operating temperature can range from about the Tg of the glass object to about the Ts of the glass object.
  • the method of bend molding a glass object includes bending the heated glass object so that it has a shape or curve that fits or is capable of being brought into contact with the shaped surface of a vacuum-molding apparatus.
  • the heated glass object is bent after the glass object is heated to an operating temperature and before the heated glass object is brought into contact with a shaped surface of a vacuum-molding apparatus.
  • the method of bend molding a glass object includes bringing the heated glass object into contact with a shaped surface of a vacuum-molding apparatus.
  • the heated glass object can be brought into contact with a shaped surface by any method of causing the heated glass object to contact the vacuum-molding apparatus.
  • the heated glass object is pressed into contact with the vacuum- molding apparatus, such that the pressure facilitates direct contact between the heated glass object and the shaped-surface of the vacuum-molding apparatus.
  • the heated glass object is brought into contact with the shaped surface of the vacuum-molding apparatus, such that gravity applies force to bend the glass and facilitates contact with the shaped surface of the vacuum-molding apparatus.
  • the method of bend molding a glass object includes a vacuum-molding apparatus that has at least one suction hole located on the shaped surface.
  • the at least one suction hole can be a plurality of holes located on the surface of the vacuum-molding apparatus.
  • the at least one suction hole is capable of applying suction to the heated glass object in a manner that facilitates contact between the heated glass object and the shaped surface of the vacuum-molding apparatus.
  • the method of bend molding a glass object includes a vacuum-molding apparatus that has at least one suction hole on the shaped surface such that the heated glass object is molded by applying suction from the at least one suction hole to provide a molded glass object.
  • the strength of the suction needs to be sufficient to facilitate and maintain contact of the heated glass object during the molding step.
  • a benefit of the vacuum-molding apparatus is that suction can enhance the contact between the heated glass object and the shaped surface of the vacuum-molding apparatus, which can provide precise shape and thickness to the molded glass object.
  • the method of bend molding a glass object includes cooling the molded glass object to a temperature below the operating temperature while maintaining contact between the molded glass object and the shaped surface of the vacuum-molding apparatus.
  • the “cooling” may be passive such that the molded glass object is allowed to cool to room temperature.
  • the “cooling” may be active by conduction or convection cooling.
  • the suction holes are adapted to connect to a vacuum pump directly or to a suction line that connects the suction holes to the vacuum pump. According to several exemplary embodiments, the suction holes connect to the vacuum pump to provide suction to the heated glass object.
  • the method of bend molding a glass object includes removing the molded glass object from the vacuum-molding apparatus.
  • the method of bend molding a glass object includes applying heat from at least one heat source located on the surface of the vacuum-molding apparatus during the molding step.
  • a benefit of applying heat to the heated glass object during the molding step is that the temperature of the heated glass object can be locally heated at the area being molded to minimize uneven heating or cooling.
  • the method of bend molding a glass object includes applying heat from an external source, which is a source external to the glass object and vacuum-molding apparatus.
  • an external source which is a source external to the glass object and vacuum-molding apparatus.
  • a benefit to applying heat from an external source is typically lower cost and the ability to heat parts of the glass object that do not directly contact the vacuum-molding apparatus.
  • the method of bend molding a glass object includes applying to the glass object at least one embossing pattern.
  • the at least one embossing pattern is a portion of the shaped surface of the vacuum-molding apparatus that forms a raised and/or lowered surface in the form of a pattern.
  • a benefit of applying the at least one embossing pattern to the glass object is that patterns can be embossed onto the glass object during the bend molding method, without incurring the cost of additional embossing processes.
  • the glass object includes at least one surface that is 2D.
  • glass objects for molding include touchscreens and flat glass.
  • the inventive method can be used to mold the at least one 2D surface into a molded glass object having at least one 2.5D or 3D surface.
  • the inventive method can produce curved glass suitable for curved displays.
  • the vacuum-molding apparatus includes a mold having at least one shaped surface and at least one suction hole on the at least one shaped surface.
  • the at least one shaped surface is a surface of the vacuum-molding apparatus.
  • the vacuum-molding apparatus and the at least one shaped surface can generally be made of any material or combination of materials that are solid and can withstand temperatures of up to 800°C without degradation of the apparatus or contamination of the glass. Suitable materials can include steel, aluminum, titanium, and alloys thereof, as well as ceramics.
  • the at least one shaped surface of the vacuum-molding apparatus can include a coating to minimize adhesion between the shaped surface and the molded glass object. According to several exemplary embodiments, the at least one shaped surface of the vacuum-molding apparatus places the material of the shaped surface into direct contact with the glass object.
  • the suction holes are configured to connect to a vacuum pump and apply suction from the vacuum pump to the suction holes.
  • the suction holes are connected to the vacuum pump via a suction line disposed in one or more passages within the vacuum-molding apparatus. A benefit of the suction holes is that the suction holes can connect to the vacuum pump directly or through suction lines.
  • the vacuum-molding apparatus includes at least one heat source located on the at least one shaped surface.
  • the heat source can be any mechanism capable of applying heat to the glass. Suitable heat sources can include heat filaments.
  • the vacuum-molding apparatus can be connected to an external heating source.
  • Suitable external heating sources include lasers, ovens, and open flames.
  • the at least one shaped surface of the vacuum-molding apparatus contains at least one embossing pattern.
  • the present disclosure provides a method and an apparatus to form curved glass with a high quality surface, which can be used in automotive systems, or portable mobile devices. It can be used with an adhered PET (polyethylene terephthalate) composite film as a curved glass for adjustable light and display effect.
  • PET polyethylene terephthalate
  • formed curved glasses are high-quality 3D or 2.5D glasses.
  • any spatial references such as, for example, “upper, ” “lower, ” “above, ” “below, ” “between, ” “bottom, ” “vertical, ” “horizontal, ” “angular, ” “upwards, ” “downwards, ” “side-to-side, ” “left-to-right, ” “left, ” “right, ” “right-to-left, ” “top-to-bottom, ” “bottom-to-top, ” “top, ” “bottom, ” “bottom-up, ” “top-down, ” etc. , are for the purpose of illustration only and do not limit the specific orientation or location of the structure described above.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)

Abstract

Cette invention concerne un procédé de moulage du verre par cintrage qui est amélioré par application d'une aspiration lors du processus de moulage par cintrage, et un moule sous vide conçu pour être utilisé avec le procédé. Le procédé et l'appareil peuvent être utilisés pour fabriquer un verre incurvé pour affichages tactiles, un verre de couverture pour cellules solaires, et un verre de sécurité.
PCT/CN2016/074409 2015-02-25 2016-02-24 Moulage du verre assisté par application d'un vide et procédés d'utilisation WO2016134655A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201510087130.8A CN105985008A (zh) 2015-02-25 2015-02-25 真空辅助玻璃成型及其使用方法
CN201510087130.8 2015-02-25

Publications (1)

Publication Number Publication Date
WO2016134655A1 true WO2016134655A1 (fr) 2016-09-01

Family

ID=56787795

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2016/074409 WO2016134655A1 (fr) 2015-02-25 2016-02-24 Moulage du verre assisté par application d'un vide et procédés d'utilisation

Country Status (3)

Country Link
CN (1) CN105985008A (fr)
TW (1) TWI677474B (fr)
WO (1) WO2016134655A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3059318B1 (fr) * 2016-11-30 2021-04-02 Saint Gobain Bombage de verre mince
WO2018122767A1 (fr) 2016-12-30 2018-07-05 Agp America S.A. Procédé et appareil de cintrage de verre fin

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10182176A (ja) * 1996-12-25 1998-07-07 Tokai Rika Co Ltd 板ガラス用曲げ型
US20070283720A1 (en) * 2004-04-26 2007-12-13 Glaverbel Device and Method for Cambering a Glass Sheet
CN102892721A (zh) * 2010-05-12 2013-01-23 肖特公开股份有限公司 模制玻璃制品的制造方法及按所述方法制造的玻璃制品的应用

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06256030A (ja) * 1993-03-02 1994-09-13 Nippon Sheet Glass Co Ltd 板ガラスの曲げ成形方法
DE602006007792D1 (de) * 2005-12-14 2009-08-27 Asahi Glass Co Ltd Verfahren und Vorrichtung zum Biegen einer Glasscheibe
US9010153B2 (en) * 2008-07-02 2015-04-21 Corning Incorporated Method of making shaped glass articles

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10182176A (ja) * 1996-12-25 1998-07-07 Tokai Rika Co Ltd 板ガラス用曲げ型
US20070283720A1 (en) * 2004-04-26 2007-12-13 Glaverbel Device and Method for Cambering a Glass Sheet
CN102892721A (zh) * 2010-05-12 2013-01-23 肖特公开股份有限公司 模制玻璃制品的制造方法及按所述方法制造的玻璃制品的应用

Also Published As

Publication number Publication date
TW201630830A (zh) 2016-09-01
CN105985008A (zh) 2016-10-05
TWI677474B (zh) 2019-11-21

Similar Documents

Publication Publication Date Title
JP6725582B2 (ja) 成形ガラス品を形成するための方法及び装置
US11400691B2 (en) Methods of forming shaped glass articles from glass sheets
JP6086954B2 (ja) 光学用曲げガラス板及びその製造方法
KR20180074780A (ko) 3d 성형된 유리-기반 제품과, 그를 성형하기 위한 방법 및 장치
TWI543945B (zh) 從二維玻璃片形成三維玻璃製品的方法
US20140144182A1 (en) Apparatus and method for shaping a glass substrate
TWI647184B (zh) 使用非恆溫溫度剖面圖以製造玻璃製品的方法
US20130086948A1 (en) Apparatus and method for tight bending thin glass sheets
JP2016511738A5 (fr)
US20150000341A1 (en) Reshaping thin glass sheets
JP6373495B2 (ja) ガラス板用の曲げ工具
US20160332423A1 (en) Laminated glass production method
TWI705944B (zh) 彎模玻璃之真空成型裝置及其使用方法
WO2016134655A1 (fr) Moulage du verre assisté par application d'un vide et procédés d'utilisation
CN102795760B (zh) 一种汽车夹层玻璃压制成型模具
JPH01242428A (ja) ガラス製品の成形方法
KR20150088471A (ko) 박형 유리기판 성형장치
JP2012076997A (ja) ガラス物品
CN219363498U (zh) 热弯模具
KR20110115630A (ko) 유리판 성형장치 및 유리판 성형방법

Legal Events

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

Ref document number: 16754764

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 16754764

Country of ref document: EP

Kind code of ref document: A1