GB2011377A - Process and Apparatus for Bending Glass - Google Patents

Process and Apparatus for Bending Glass

Info

Publication number
GB2011377A
GB2011377A GB7848723A GB7848723A GB2011377A GB 2011377 A GB2011377 A GB 2011377A GB 7848723 A GB7848723 A GB 7848723A GB 7848723 A GB7848723 A GB 7848723A GB 2011377 A GB2011377 A GB 2011377A
Authority
GB
United Kingdom
Prior art keywords
sheet
dies
glass
prior
preheated
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.)
Granted
Application number
GB7848723A
Other versions
GB2011377B (en
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.)
BFG Glassgroup GIE
Original Assignee
BFG Glassgroup GIE
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 BFG Glassgroup GIE filed Critical BFG Glassgroup GIE
Priority to GB7848723A priority Critical patent/GB2011377B/en
Publication of GB2011377A publication Critical patent/GB2011377A/en
Application granted granted Critical
Publication of GB2011377B publication Critical patent/GB2011377B/en
Expired legal-status Critical Current

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
    • C03B23/03—Re-forming glass sheets by bending by press-bending between shaping moulds
    • C03B23/0307—Press-bending involving applying local or additional heating, cooling or insulating means
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B27/00—Tempering or quenching glass products
    • C03B27/004—Tempering or quenching glass products by bringing the hot glass product in contact with a solid cooling surface, e.g. sand grains

Landscapes

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

Abstract

An untempered sheet of glass is given a predetermined curvature by means of preheated forming dies (3, 4 in Fig. 1). The glass sheet (1) is not preheated or is heated only to a relatively low temperature prior to being inserted between the dies. Heat transfer from the dies to the glass prior to closure of the dies produces or assists in producing in the thickness of the glass sheet a transitory thermal stress gradient which gives resistance to breakage under bending forces. The absence of high temperature preheating of the sheet is conducive to a more predictable stress distribution pattern over the area of the sheet prior to bending. The process enables predetermined sheet curvatures to be achieved with higher degrees of accuracy. <IMAGE>
GB7848723A 1977-12-30 1978-12-15 Process and apparatus for bending glass Expired GB2011377B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7848723A GB2011377B (en) 1977-12-30 1978-12-15 Process and apparatus for bending glass

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB5434377 1977-12-30
GB7848723A GB2011377B (en) 1977-12-30 1978-12-15 Process and apparatus for bending glass

Publications (2)

Publication Number Publication Date
GB2011377A true GB2011377A (en) 1979-07-11
GB2011377B GB2011377B (en) 1982-06-09

Family

ID=26267445

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7848723A Expired GB2011377B (en) 1977-12-30 1978-12-15 Process and apparatus for bending glass

Country Status (1)

Country Link
GB (1) GB2011377B (en)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2165232A (en) * 1984-09-19 1986-04-09 Autoroofs Ltd Curved vehicle window panels
EP0277074A1 (en) * 1987-01-29 1988-08-03 Saint-Gobain Vitrage International Volumes of glass tempered by contact with reinforced rims
EP0328442A2 (en) * 1988-02-06 1989-08-16 Saint-Gobain Vitrage International Method and apparatus for making a bent sheet of glass
EP0415827A1 (en) * 1989-09-01 1991-03-06 Saint Gobain Vitrage International Apparatus for bending glass-sheets
EP0429347A1 (en) * 1989-11-17 1991-05-29 Nippon Sheet Glass Co. Ltd. Method of and system for bending sheet glass
US5122177A (en) * 1990-01-11 1992-06-16 Nippon Sheet Glass Co., Ltd. Method of and system for pressing sheet glass
US5139552A (en) * 1989-12-05 1992-08-18 Nippon Sheet Glass Co., Ltd. Apparatus for bending and tempering sheet glass
EP0677489A2 (en) * 1994-04-15 1995-10-18 Pilkington Glass Limited Bending and tempering glass sheets
US5634957A (en) * 1995-06-07 1997-06-03 Pilkington Glass Limited Apparatus for and method for bending glass sheets
US5645621A (en) * 1995-06-07 1997-07-08 Pilkington Glass Limited Apparatus for and method of bending glass sheets
US5695537A (en) * 1995-06-07 1997-12-09 Pilkington Glass Limited Apparatus for and method of bending glass sheets
US5882370A (en) * 1995-06-07 1999-03-16 Pilkington Glass Limited Method of bending glass sheets
CN1128767C (en) * 1995-06-07 2003-11-26 英国皮尔金顿有限公司 Apparatus and method for bending glass sheets

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2165232A (en) * 1984-09-19 1986-04-09 Autoroofs Ltd Curved vehicle window panels
EP0277074A1 (en) * 1987-01-29 1988-08-03 Saint-Gobain Vitrage International Volumes of glass tempered by contact with reinforced rims
FR2610316A1 (en) * 1987-01-29 1988-08-05 Saint Gobain Vitrage TEMPERED GLASS VOLUMES BY CONTACT WITH REINFORCED EDGE CONSTRAINTS
EP0328442A2 (en) * 1988-02-06 1989-08-16 Saint-Gobain Vitrage International Method and apparatus for making a bent sheet of glass
EP0328442A3 (en) * 1988-02-06 1990-10-03 Saint-Gobain Vitrage Method and apparatus for making a bent sheet of glass
EP0415827A1 (en) * 1989-09-01 1991-03-06 Saint Gobain Vitrage International Apparatus for bending glass-sheets
EP0429347A1 (en) * 1989-11-17 1991-05-29 Nippon Sheet Glass Co. Ltd. Method of and system for bending sheet glass
US5149352A (en) * 1989-11-17 1992-09-22 Nippon Sheet Glass Co., Ltd. Method of and system for bending sheet glass
US5139552A (en) * 1989-12-05 1992-08-18 Nippon Sheet Glass Co., Ltd. Apparatus for bending and tempering sheet glass
US5122177A (en) * 1990-01-11 1992-06-16 Nippon Sheet Glass Co., Ltd. Method of and system for pressing sheet glass
EP0677489A2 (en) * 1994-04-15 1995-10-18 Pilkington Glass Limited Bending and tempering glass sheets
EP0677489A3 (en) * 1994-04-15 1996-01-24 Pilkington Glass Ltd Bending and tempering glass sheets.
US5755845A (en) * 1994-04-15 1998-05-26 Pilkington Glass Limited Method and apparatus for bending and tempering glass sheets
US5634957A (en) * 1995-06-07 1997-06-03 Pilkington Glass Limited Apparatus for and method for bending glass sheets
US5645621A (en) * 1995-06-07 1997-07-08 Pilkington Glass Limited Apparatus for and method of bending glass sheets
US5695537A (en) * 1995-06-07 1997-12-09 Pilkington Glass Limited Apparatus for and method of bending glass sheets
US5882370A (en) * 1995-06-07 1999-03-16 Pilkington Glass Limited Method of bending glass sheets
CN1128767C (en) * 1995-06-07 2003-11-26 英国皮尔金顿有限公司 Apparatus and method for bending glass sheets

Also Published As

Publication number Publication date
GB2011377B (en) 1982-06-09

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee