Method for drawing glass tapes

Details Method for drawing glass tapes Method for drawing glass tapes

1989-02-08

1990-03-06

Kellogg, Arthur

Glass manufacturing

Processes

Forming product or preform from molten glass

65 95, 65203, 65204, C03B 1504

Patent

active

049062700

ABSTRACT:
A method for drawing glass sheets of crystallization-sensitive glass such as borosilicate glass or glass ceramic. A melt in a vat of a glass furnace is supplied through a feed channel to a drawing chamber from which a glass sheet is drawn perpendicularly upwardly essentially across a full width of the drawing chamber. The melt in the drawing chamber is heated by at least two current-charged precious metal strips at each of the opposite sides of a drawing plane in a region of the surface of the sheet. This heating occurs in sections at each side of the drawing plans so that the melt is sectionally heated and crystallization at walls of the drawing chamber laying opposite one another at the vertical drawing plane is effectively prevented. In addition, the drawing chamber can be sectionally covered by slides.

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