ENVIRONMENTAL CONTROL FOR MINERAL FIBER-FORMING

摘要

A mineral fiber-forming bushing is disclosed in which sidewalls containing at least one fluid outlet opening extend continuously downwardly from the bushing bottom wall to define a forming chamber beneath the bushing. A fluid is directed toward the bushing bottom wall and the exit of the fluid through the opening is controlled. The control of fluid flow can control the local environmental conditions both within the forming chamber and on the bushing bottom wall. The bottom wall contains a plurality of orifices through which the fibers are drawn. A portion of the sidewalls can comprise an annular air manifold which supplies and directs the air. The outlet openings are positioned intermediate the bottom wall and the supply manifold.