FR2241503A1 - Support for non-planar glass blanks - during heat treatment in the viscous state, partic. for photochromatic glass articles - Google Patents

Support for non-planar glass blanks - during heat treatment in the viscous state, partic. for photochromatic glass articles

Info

Publication number
FR2241503A1
FR2241503A1 FR7330406A FR7330406A FR2241503A1 FR 2241503 A1 FR2241503 A1 FR 2241503A1 FR 7330406 A FR7330406 A FR 7330406A FR 7330406 A FR7330406 A FR 7330406A FR 2241503 A1 FR2241503 A1 FR 2241503A1
Authority
FR
France
Prior art keywords
partic
glass
support
photochromatic
heat treatment
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
FR7330406A
Other languages
French (fr)
Other versions
FR2241503B3 (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.)
SOVIREL
Original Assignee
SOVIREL
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 SOVIREL filed Critical SOVIREL
Priority to FR7330406A priority Critical patent/FR2241503A1/en
Priority to DE19742439851 priority patent/DE2439851A1/en
Publication of FR2241503A1 publication Critical patent/FR2241503A1/en
Application granted granted Critical
Publication of FR2241503B3 publication Critical patent/FR2241503B3/fr
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B35/00—Transporting of glass products during their manufacture, e.g. hot glass lenses, prisms
    • C03B35/14—Transporting hot glass sheets or ribbons, e.g. by heat-resistant conveyor belts or bands
    • C03B35/22—Transporting hot glass sheets or ribbons, e.g. by heat-resistant conveyor belts or bands on a fluid support bed, e.g. on molten metal
    • C03B35/24—Transporting hot glass sheets or ribbons, e.g. by heat-resistant conveyor belts or bands on a fluid support bed, e.g. on molten metal on a gas support bed
    • C03B35/243—Transporting hot glass sheets or ribbons, e.g. by heat-resistant conveyor belts or bands on a fluid support bed, e.g. on molten metal on a gas support bed having a non-planar surface, e.g. curved, for bent sheets
    • 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
    • C03B11/06—Construction of plunger or mould
    • C03B11/08—Construction of plunger or mould for making solid articles, e.g. lenses
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B32/00—Thermal after-treatment of glass products not provided for in groups C03B19/00, C03B25/00 - C03B31/00 or C03B37/00, e.g. crystallisation, eliminating gas inclusions or other impurities; Hot-pressing vitrified, non-porous, shaped glass products
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B35/00—Transporting of glass products during their manufacture, e.g. hot glass lenses, prisms
    • C03B35/005—Transporting hot solid glass products other than sheets or rods, e.g. lenses, prisms, by suction or floatation
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2215/00—Press-moulding glass
    • C03B2215/40—Product characteristics
    • C03B2215/46—Lenses, e.g. bi-convex
    • C03B2215/48—Convex-concave
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2215/00—Press-moulding glass
    • C03B2215/40—Product characteristics
    • C03B2215/46—Lenses, e.g. bi-convex
    • C03B2215/49—Complex forms not covered by groups C03B2215/47 or C03B2215/48
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2215/00—Press-moulding glass
    • C03B2215/70—Horizontal or inclined press axis

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Surface Treatment Of Glass (AREA)
  • Joining Of Glass To Other Materials (AREA)

Abstract

Support of non-planar moulded glass blanks, partic. for coloured sunglasses, while in the viscious state by producing an excess pressure on the concave side of the blank to produce a force counteracting yielding of the wall of the blank under grantational force. The process is of particular value in the prodn. of photochromatic properties in sun glass lenses involving successive heat treatments at 450-650 degrees C and 600-800 degrees C respectively, in the second of which the glass is in viscious deformable state.
FR7330406A 1973-08-22 1973-08-22 Support for non-planar glass blanks - during heat treatment in the viscous state, partic. for photochromatic glass articles Granted FR2241503A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR7330406A FR2241503A1 (en) 1973-08-22 1973-08-22 Support for non-planar glass blanks - during heat treatment in the viscous state, partic. for photochromatic glass articles
DE19742439851 DE2439851A1 (en) 1973-08-22 1974-08-20 METHOD AND DEVICE FOR SUPPORTING BLOCKS MADE OF NON-PLANE GLASS IN THE VISTAINABLE STATE

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7330406A FR2241503A1 (en) 1973-08-22 1973-08-22 Support for non-planar glass blanks - during heat treatment in the viscous state, partic. for photochromatic glass articles

Publications (2)

Publication Number Publication Date
FR2241503A1 true FR2241503A1 (en) 1975-03-21
FR2241503B3 FR2241503B3 (en) 1976-07-30

Family

ID=9124187

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7330406A Granted FR2241503A1 (en) 1973-08-22 1973-08-22 Support for non-planar glass blanks - during heat treatment in the viscous state, partic. for photochromatic glass articles

Country Status (2)

Country Link
DE (1) DE2439851A1 (en)
FR (1) FR2241503A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1980000336A1 (en) * 1978-08-09 1980-03-06 Jenaer Glaswerk Schott & Gen Process for manufacturing glass articles formed from glass plate

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1980000336A1 (en) * 1978-08-09 1980-03-06 Jenaer Glaswerk Schott & Gen Process for manufacturing glass articles formed from glass plate

Also Published As

Publication number Publication date
DE2439851A1 (en) 1975-03-13
FR2241503B3 (en) 1976-07-30

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