HOLLOW MINERAL FIBERS USING ROTARY PROCESS

摘要

In a method for producing hollow mineral fibers (20) such as glass fibers, molten glass is supplied to a rotating glass spinner (10) having a peripheral wall (14). The spinner rotates so that molten glass is centrifuged through a first tube (24) extending through the peripheral wall of the spinner to form fibers. Gas is introduced into the interior of the molten glass to form hollow glass fibers. A second tube (44) positioned inside the first tube includes an inlet (56) in the wall of the first tube (24), and gas is introduced through the inlet from outside the peripheral wall. The hollow glass fibers are then collected to form a product such as a mat (130).