FR2108844A7 - Moulding/tempering glass sheets - of less than equilibrium thickness - Google Patents

Moulding/tempering glass sheets - of less than equilibrium thickness

Info

Publication number
FR2108844A7
FR2108844A7 FR7036786A FR7036786A FR2108844A7 FR 2108844 A7 FR2108844 A7 FR 2108844A7 FR 7036786 A FR7036786 A FR 7036786A FR 7036786 A FR7036786 A FR 7036786A FR 2108844 A7 FR2108844 A7 FR 2108844A7
Authority
FR
France
Prior art keywords
glass
sheet
thickness
mould
molten glass
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
FR7036786A
Other languages
French (fr)
Other versions
FR2108844B3 (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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR7036786A priority Critical patent/FR2108844A7/en
Application granted granted Critical
Publication of FR2108844A7 publication Critical patent/FR2108844A7/en
Publication of FR2108844B3 publication Critical patent/FR2108844B3/fr
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B11/00—Pressing molten glass or performed glass reheated to equivalent low viscosity without blowing
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B18/00—Shaping glass in contact with the surface of a liquid
    • C03B18/02—Forming sheets
    • C03B18/04—Changing or regulating the dimensions of the molten glass ribbon
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B27/00—Tempering or quenching glass products
    • C03B27/02—Tempering or quenching glass products using liquid
    • C03B27/03—Tempering or quenching glass products using liquid the liquid being a molten metal or a molten salt
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B27/00—Tempering or quenching glass products
    • C03B27/04—Tempering or quenching glass products using gas
    • C03B27/044—Tempering or quenching glass products using gas for flat or bent glass sheets being in a horizontal position

Landscapes

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

Abstract

Moulding/tempering of glass sheets of less than equilibrium thickness i.e. the thickness to which it will spread under the sole influence of its surface tension and gravity on a non-wetted surface, by (a) periodically introducing a suitable volume of molten glass into the cavity of a mould, not wetted by molten glass and with dimensions and shape as required for the finished sheet and which is placed in an enclosure heated to the temp. of molten glass, (b) modifying the shape of this volume of glass by a forming tool so that it covers the bottom of the mould and is in continuous contact with the surrounding lateral surfaces, in such a way as to create a pre-form, thinner in its central zone and thicker in its marginal zones than the molten sheet to be produced, (c) simultaneously withdrawing the forming tool and establishing a gas pressure above the liquid glass pre-form above atmospheric and such that the sheet of motel glass can be in equilibrium while covering the bottom of the mould, (d) hardening (solidifying) the molten glass sheet to fix its thickness and finally transferring the hardened sheet to another compartment in which it is energetically cooled to ensure that it is tempered.
FR7036786A 1970-10-12 1970-10-12 Moulding/tempering glass sheets - of less than equilibrium thickness Expired FR2108844A7 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7036786A FR2108844A7 (en) 1970-10-12 1970-10-12 Moulding/tempering glass sheets - of less than equilibrium thickness

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7036786A FR2108844A7 (en) 1970-10-12 1970-10-12 Moulding/tempering glass sheets - of less than equilibrium thickness

Publications (2)

Publication Number Publication Date
FR2108844A7 true FR2108844A7 (en) 1972-05-26
FR2108844B3 FR2108844B3 (en) 1973-06-29

Family

ID=9062605

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7036786A Expired FR2108844A7 (en) 1970-10-12 1970-10-12 Moulding/tempering glass sheets - of less than equilibrium thickness

Country Status (1)

Country Link
FR (1) FR2108844A7 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2298516A1 (en) * 1975-01-27 1976-08-20 Owens Illinois Inc COOLING SYSTEMS FOR MOLDED GLASS ARTICLES

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2298516A1 (en) * 1975-01-27 1976-08-20 Owens Illinois Inc COOLING SYSTEMS FOR MOLDED GLASS ARTICLES

Also Published As

Publication number Publication date
FR2108844B3 (en) 1973-06-29

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Legal Events

Date Code Title Description
ST Notification of lapse