DE692589C - Pressed glass shape - Google Patents

Pressed glass shape

Info

Publication number
DE692589C
DE692589C DE1939L0096989 DEL0096989D DE692589C DE 692589 C DE692589 C DE 692589C DE 1939L0096989 DE1939L0096989 DE 1939L0096989 DE L0096989 D DEL0096989 D DE L0096989D DE 692589 C DE692589 C DE 692589C
Authority
DE
Germany
Prior art keywords
glass shape
glass
pressed glass
pressed
boron nitride
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
DE1939L0096989
Other languages
German (de)
Inventor
Roy W Moore
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.)
AEG AG
Original Assignee
AEG AG
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 AEG AG filed Critical AEG AG
Application granted granted Critical
Publication of DE692589C publication Critical patent/DE692589C/en
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
    • C03B11/06—Construction of plunger or mould
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B19/00—Other methods of shaping glass
    • C03B19/02—Other methods of shaping glass by casting molten glass, e.g. injection moulding
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B40/00—Preventing adhesion between glass and glass or between glass and the means used to shape it, hold it or support it

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Mold Materials And Core Materials (AREA)
  • Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
  • Glass Compositions (AREA)
  • Laminated Bodies (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)

Description

Gegenstand der Erfindung ist eine Preßglasform, an der das Glas nicht Hebt. Bisher bereitete das Kleben dies in Formen gepreßten Glases an den Formwandungem Schwierigkeiten, besonders wenn der Glasfluß zur Erzielung großer Leichtfliissiglaeit hoch erhitzt wurde. Es ist zwar in der Glastechnik bekannt, das Kleben des Glases durch Überziehen der mit dem heißen Glas in Berührung kommenden Teile mit einem feuerfesten Mittel, wie Graphit, Speckstein oder Schlämmkreide, nach Möglichkeit zu verhindern, jedoch haben diese Mittel noch nicht voll befriedigt.The invention relates to a pressed glass mold on which the glass does not lift. Until now Prepared gluing this pressed into molds Glass on the mold wall difficulties, especially when the glass flow was heated to a high level to achieve a high level of fluidity. It is in glass engineering, though known, the gluing of the glass by covering the with the hot glass in contact to prevent coming parts with a refractory agent such as graphite, soapstone or whiting chalk, if possible, however, these means have not yet been fully satisfied.

,s Es wurde nun gefunden, daß das Kleben selbst bei den höchsten in Frage kommenden Temperaturen des Glases vollkommen vermieden wird, wenn die Oberfläche der Formen mit Bornitrid (BN) überzogen wird. Das Bornitrid kann auf die Formoberfläche aufgestrichen, aufgebürstet oder nach Verteilung in einer geeigneten Bindeflüssigkeit aufgespritzt werden. Die Verwendung von ganz aus Bornitrid bestehenden Formen ist nicht empfehlenswert wegen der hohen Kosten und Ä5 der leichten Zerbrechlichkeit des Nitrides. ., S We have found that the glue is completely avoided even at the highest temperatures in question of the glass when the surface of the molds with boron nitride (BN) is covered. The boron nitride can be painted, brushed on or sprayed onto the mold surface after distribution in a suitable binding liquid. The use of all forms of boron nitride existing is not recommended because of high costs and ae5 light fragility of the nitride. .

Claims (1)

Patentanspruch':Claim ': .Preßglasform, dadurch gekennzeichnet, daß die mit dem Glasfluß in Berührung • kommende Oberfläche mit Bornitrid (BN) überzogen ist..Preßglasform, characterized in that with the glass flow in contact • The upcoming surface is coated with boron nitride (BN).
DE1939L0096989 1938-02-01 1939-01-31 Pressed glass shape Expired DE692589C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US508295XA 1938-02-01 1938-02-01

Publications (1)

Publication Number Publication Date
DE692589C true DE692589C (en) 1940-06-22

Family

ID=21967703

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1939L0096989 Expired DE692589C (en) 1938-02-01 1939-01-31 Pressed glass shape

Country Status (3)

Country Link
DE (1) DE692589C (en)
FR (1) FR849715A (en)
GB (2) GB508295A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4111673A (en) * 1976-06-15 1978-09-05 Conwed Corporation Mineral fiberizing wheel
US4150708A (en) * 1977-12-05 1979-04-24 Gte Sylvania Incorporated Apparatus and method of making filaments
US4274857A (en) * 1979-11-02 1981-06-23 Ppg Industries, Inc. Treating covers for press bending molds, and method of press bending glass sheets
DE3668881D1 (en) * 1985-03-12 1990-03-15 Asahi Glass Co Ltd METHOD FOR MOLDING A CALCIUM PHOSPHATE GLASS.

Also Published As

Publication number Publication date
GB544512A (en) 1900-01-01
FR849715A (en) 1939-11-30
GB508295A (en) 1939-06-28

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