FR3072669B1 - GLASS BENDING BY GRAVITY IN THE PRESENCE OF A RADIATIVE COUNTER-SKELETON - Google Patents

GLASS BENDING BY GRAVITY IN THE PRESENCE OF A RADIATIVE COUNTER-SKELETON Download PDF

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Publication number
FR3072669B1
FR3072669B1 FR1759862A FR1759862A FR3072669B1 FR 3072669 B1 FR3072669 B1 FR 3072669B1 FR 1759862 A FR1759862 A FR 1759862A FR 1759862 A FR1759862 A FR 1759862A FR 3072669 B1 FR3072669 B1 FR 3072669B1
Authority
FR
France
Prior art keywords
glass
skeleton
gravity
bending
lens
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.)
Expired - Fee Related
Application number
FR1759862A
Other languages
French (fr)
Other versions
FR3072669A1 (en
Inventor
Thierry Olivier
Jerome Pelletier
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.)
Saint Gobain Glass France SAS
Compagnie de Saint Gobain SA
Original Assignee
Saint Gobain Glass France SAS
Compagnie de Saint Gobain SA
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
Priority to FR1759862A priority Critical patent/FR3072669B1/en
Application filed by Saint Gobain Glass France SAS, Compagnie de Saint Gobain SA filed Critical Saint Gobain Glass France SAS
Priority to US16/755,017 priority patent/US20200346965A1/en
Priority to CN201880003853.7A priority patent/CN109937192B/en
Priority to PCT/FR2018/052597 priority patent/WO2019077278A1/en
Priority to CN201880003850.3A priority patent/CN109952276B/en
Priority to PCT/FR2018/052596 priority patent/WO2019077277A1/en
Priority to US16/755,047 priority patent/US20210188686A1/en
Priority to EP18814988.4A priority patent/EP3697734A1/en
Priority to EP18812230.3A priority patent/EP3697733A1/en
Publication of FR3072669A1 publication Critical patent/FR3072669A1/en
Application granted granted Critical
Publication of FR3072669B1 publication Critical patent/FR3072669B1/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B23/00—Re-forming shaped glass
    • C03B23/02—Re-forming glass sheets
    • C03B23/023—Re-forming glass sheets by bending
    • C03B23/025—Re-forming glass sheets by bending by gravity
    • C03B23/0256—Gravity bending accelerated by applying mechanical forces, e.g. inertia, weights or local forces
    • 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
    • C03B23/03—Re-forming glass sheets by bending by press-bending between shaping moulds

Landscapes

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

Abstract

L'invention concerne un dispositif et un procédé de bombage par gravité d'une feuille de verre ou d'un empilement de feuilles de verre, dit le verre, comprenant le bombage du verre par gravité sur un squelette comprenant une piste de contact supportant le verre dans la zone périphérique de sa face principale inférieure, un contre-squelette comprenant une barre métallique étant présent pendant le bombage à une distance d de la tranche ou de la zone périphérique de la face principale supérieure du verre, la zone périphérique d'une face principale étant la zone entre le bord du verre et une distance du bord du verre de 50 mm de ladite face principale, d étant compris dans le domaine allant de 0,1 à 50 mm. L'invention est particulièrement utile pour le bombage de verre mince et pour réduire les ondulations ayant tendance à se former vers le milieu des côtés.The invention relates to a device and a method for bending by gravity a sheet of glass or a stack of sheets of glass, called glass, comprising the bending of the glass by gravity on a skeleton comprising a contact track supporting the lens in the peripheral zone of its lower main face, a counter-skeleton comprising a metal bar being present during bending at a distance d from the edge or from the peripheral zone of the upper main face of the lens, the peripheral zone of a main face being the area between the edge of the lens and a distance from the edge of the lens of 50 mm from said main face, d being included in the range from 0.1 to 50 mm. The invention is particularly useful for the bending of thin glass and for reducing the undulations which tend to form towards the middle of the sides.

FR1759862A 2017-10-19 2017-10-19 GLASS BENDING BY GRAVITY IN THE PRESENCE OF A RADIATIVE COUNTER-SKELETON Expired - Fee Related FR3072669B1 (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
FR1759862A FR3072669B1 (en) 2017-10-19 2017-10-19 GLASS BENDING BY GRAVITY IN THE PRESENCE OF A RADIATIVE COUNTER-SKELETON
CN201880003853.7A CN109937192B (en) 2017-10-19 2018-10-18 Bending glass by gravity between a skeleton and a counter-skeleton
PCT/FR2018/052597 WO2019077278A1 (en) 2017-10-19 2018-10-18 Gravity-bending glass in the presence of a radiative counter-frame
CN201880003850.3A CN109952276B (en) 2017-10-19 2018-10-18 Gravity bending of glass with radiation reflecting skeleton
US16/755,017 US20200346965A1 (en) 2017-10-19 2018-10-18 Bending glass by gravity between skeleton and counter-skeleton
PCT/FR2018/052596 WO2019077277A1 (en) 2017-10-19 2018-10-18 Gravity-bending glass between a frame and a counter-frame
US16/755,047 US20210188686A1 (en) 2017-10-19 2018-10-18 Gravity bending of glass in the presence of a radiative counter-skeleton
EP18814988.4A EP3697734A1 (en) 2017-10-19 2018-10-18 Gravity-bending glass in the presence of a radiative counter-frame
EP18812230.3A EP3697733A1 (en) 2017-10-19 2018-10-18 Gravity-bending glass between a frame and a counter-frame

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1759862 2017-10-19
FR1759862A FR3072669B1 (en) 2017-10-19 2017-10-19 GLASS BENDING BY GRAVITY IN THE PRESENCE OF A RADIATIVE COUNTER-SKELETON

Publications (2)

Publication Number Publication Date
FR3072669A1 FR3072669A1 (en) 2019-04-26
FR3072669B1 true FR3072669B1 (en) 2022-04-01

Family

ID=61132544

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1759862A Expired - Fee Related FR3072669B1 (en) 2017-10-19 2017-10-19 GLASS BENDING BY GRAVITY IN THE PRESENCE OF A RADIATIVE COUNTER-SKELETON

Country Status (1)

Country Link
FR (1) FR3072669B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3106827B1 (en) * 2020-01-31 2022-02-04 Saint Gobain Method and device for bending a sheet of glass by pressing against a bending mold

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2003383A (en) * 1933-12-18 1935-06-04 Pittsburgh Plate Glass Co Process and apparatus for bending glass sheets
GB1463062A (en) * 1973-07-20 1977-02-02 Triplex Safety Glass Co Bending of glass sheets
US4804397A (en) * 1987-12-16 1989-02-14 Ppg Industries, Inc. Partial press in gravity bending furnace and method of use
US5049178A (en) * 1989-09-11 1991-09-17 Ppg Industries, Inc. Partial press apparatus and method for glass sheet bending

Also Published As

Publication number Publication date
FR3072669A1 (en) 2019-04-26

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