Method and apparatus for forming glass fibers

Details Method and apparatus for forming glass fibers Method and apparatus for forming glass fibers

C - Chemistry, Metallurgy

03

B

49/9.2

C03B 37/085 (2006.01) C03B 37/022 (2006.01) C03B 37/081 (2006.01) C03B 37/083 (2006.01) C03B 37/09 (2006.01)

Patent

CA 1200698

ABSTRACT OF THE DISCLOSURE A glass fiber attenuation apparatus and process wherein molten glass is supplied to an orifice plate at substantially atmospheric pressure to prevent molten glass flow through an orifice at which attenuation has ceased. The preferred embodiment of the method includes cooling the orifice plate undersurface to a non-wetting tempera- ture and delivering molten glass to the orifice plate at a pressure less than the internal, surface tension-generated pressure of any bead formed on the undersurface of the orifice plate upon attenuation cessation. The preferred embodiment of the apparatus includes a perforate pressure plate immersed in the body of molten glass and superimposed over the orifice plate to effect a pressure drop upon normal attenuation flow to reduce the pressure immediately above the orifice plate to substantially atmospheric or, in any event, to a pressure less than the internal pressure of a bead formed on attenuation cessation at an orifice.

434262

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