Method and apparatus for manufacture of glass film

Details Method and apparatus for manufacture of glass film Method and apparatus for manufacture of glass film

C - Chemistry, Metallurgy

03

B

49/17.3

C03B 17/06 (2006.01)

Patent

CA 1155302

OI 14704 METHOD AND APPARATUS FOR MANUFACTURE OF GLASS FILM ABSTRACT OF THE INVENTION The invention provides a method and apparatus for the manufacture of glass film having a thickness not in excess-of .003 inches and accomplished by drawing the film through a narrow slot-like orifice. The walls of the orifice are defined by an electrically conductive, hot glass resistant metal and electrical currents are introduced into the metal walls of the orifice to effectively maintain the central portions of the orifice walls at a higher temperature than each of the two lateral end walls of the orifice, thereby producing a temperature differential in the drawn film on the order of 40°F between the edges of the film and the cental portions of the film.

365625

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