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ES475788A1 - Procedimiento para impartir una curvatura permanente a una hoja de vidrio. - Google Patents

Procedimiento para impartir una curvatura permanente a una hoja de vidrio.

Info

Publication number
ES475788A1
ES475788A1 ES475788A ES475788A ES475788A1 ES 475788 A1 ES475788 A1 ES 475788A1 ES 475788 A ES475788 A ES 475788A ES 475788 A ES475788 A ES 475788A ES 475788 A1 ES475788 A1 ES 475788A1
Authority
ES
Spain
Prior art keywords
sheet
glass
dies
heated
prior
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
Application number
ES475788A
Other languages
English (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
Publication of ES475788A1 publication Critical patent/ES475788A1/es
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

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)
  • Joining Of Glass To Other Materials (AREA)
  • Investigating Or Analyzing Materials Using Thermal Means (AREA)

Abstract

Procedimiento para impartir una curvatura permanente a una hoja de vidrio, sometiendo dicha hoja a fuerzas de doblado entre matrices formadoras precalentadas y que tienen superficies curvas complementarias, caracterizado por el hecho de que la hoja es introducida en estado no templado entre las matrices precalentadas, y estas últimas son cerradas mientras existe un gradiente de tensiones térmicas transitorio en el espesor de la hoja, debido, al menos parcialmente, a la transferencia de calor desde las matrices, y éstas últimas son abiertas después de la relación al menos parcial de las tensiones de doblado.
ES475788A 1977-12-30 1978-12-07 Procedimiento para impartir una curvatura permanente a una hoja de vidrio. Expired ES475788A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5434377 1977-12-30

Publications (1)

Publication Number Publication Date
ES475788A1 true ES475788A1 (es) 1979-04-16

Family

ID=10470696

Family Applications (1)

Application Number Title Priority Date Filing Date
ES475788A Expired ES475788A1 (es) 1977-12-30 1978-12-07 Procedimiento para impartir una curvatura permanente a una hoja de vidrio.

Country Status (7)

Country Link
US (1) US4199342A (es)
JP (1) JPS54106526A (es)
BE (1) BE872862A (es)
BR (1) BR7808642A (es)
DE (1) DE2855163A1 (es)
ES (1) ES475788A1 (es)
FR (1) FR2413334A1 (es)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4372772A (en) * 1979-08-29 1983-02-08 Wood Douglas E Parabolic reflector comprising a plurality of triangular reflecting members forming a reflecting surface supported by a framework having a particular geometric pattern
US4734118A (en) * 1981-10-30 1988-03-29 Corning Glass Works Process to mold precision glass articles
US4854958A (en) * 1981-10-30 1989-08-08 Corning Glass Works Process to mold precision glass articles
US4481023A (en) * 1981-10-30 1984-11-06 Corning Glass Works Process to mold precision glass articles
US4969944A (en) * 1981-10-30 1990-11-13 Corning Incorporated Process to mold precision glass articles
DE3540207A1 (de) * 1985-11-13 1987-05-14 Wilhelm Koenig Verfahren zur herstellung von lichtstreuscheiben mit entsprechender strukturierung, insbesondere autoscheinwerfer - streuscheiben
DE3929042C1 (es) * 1989-09-01 1991-01-10 Vegla Vereinigte Glaswerke Gmbh, 5100 Aachen, De
JP2820852B2 (ja) * 1992-04-21 1998-11-05 住友重機械プラスチックマシナリー株式会社 ガラス圧縮成形機
US5498275A (en) * 1993-10-18 1996-03-12 Glasstech, Inc. Glass sheet bending apparatus
GB9407609D0 (en) * 1994-04-15 1994-06-08 Pilkington Glass Ltd Bending and tempering glass sheets
DE10105200A1 (de) * 2001-02-06 2002-08-14 Saint Gobain Verfahren und Vorrichtung zum paarweisen Biegen von Glasscheiben
US20020116950A1 (en) * 2001-02-27 2002-08-29 Dunifon Thomas A. Heated ceramic female mold
US20100050694A1 (en) * 2006-11-02 2010-03-04 Saint-Gobain Glass France Bending of glass by heated or cooled form
US20150232366A1 (en) * 2014-02-18 2015-08-20 Corning Incorporated Tunable mold system for glass press bending equipment
KR20170006900A (ko) * 2015-07-10 2017-01-18 삼성전자주식회사 성형장치 및 이를 이용한 성형방법

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2442242A (en) * 1945-01-17 1948-05-25 Blue Ridge Glass Corp Bending of glass by pressing on heated molds
NL209048A (es) * 1954-10-22
US3208839A (en) * 1961-02-27 1965-09-28 Corning Glass Works Method of shaping a glass article
FR1540411A (fr) * 1967-07-13 1968-09-27 Saint Gobain Perfectionnement aux dispositifs pour la trempe des feuilles de verre par contact
GB1260472A (en) * 1968-07-12 1972-01-19 Triplex Safety Glass Co Improvements in or relating to the bending of glass sheets

Also Published As

Publication number Publication date
DE2855163A1 (de) 1979-07-12
JPS54106526A (en) 1979-08-21
BR7808642A (pt) 1979-07-10
US4199342A (en) 1980-04-22
JPS619258B2 (es) 1986-03-20
FR2413334B1 (es) 1982-12-03
FR2413334A1 (fr) 1979-07-27
BE872862A (fr) 1979-06-19

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19991102