Method and apparatus for forming glass fibers

Abstract

Abstract In the manufacture of glass fibers, molten glass is delivered from a melter- refiner to a two stage continuous, non-pulsing pumping device which drags high volume of bubble-containing viscous glass through a first stage at a relatively low shear rate supplying an excess of glass at a modest pressure increase to a second stage which drags a part of the viscous glass through it at substantially higher shear rates thus delivering substantially bubble-free molten glass at high pressure to a working chamber, while the excess bubble-containing glass, unable to support shear, is rejected from the pump and delivered to a refining chamber with the bubbles concentrated to assist their removal by heating.

Inventors

• 👤 Thomas H Jensen

Bibliographic Details