Centrifuging process for forming fibers

The method of forming fibers comprising:

• a. introducing molten material into a spinner rotating about an axis, the spinner having a peripheral wall which has a plurality of orifices;
• b. centrifuging the molten material through the orifices to create fibers;
• c. discharging gases from an opening in a first annular blower which is positioned radially outwardly from the spinner, the gases converging radially inwardly with respect to the spinner axis to attenuate the fibers and influence the flow path of the fibers towards a direction parallel to the spinner axis;
• and
• d. discharging gases from an opening in a second annular blower which is positioned radially outwardly from the first blower, the gases diverging radially outwardly with respect to the spinner axis to attenuate the fibers and influence the flow path of the fibers.

A method of forming fibers, comprising:

• introducing molten material into a spinner rotating about an axis, the spinner having a peripheral wall having a plurality of orifices;
• centrifuging the molten material through the orifices to create fibers;
• discharging gases from an opening in a first annular blower, the first blower opening positioned radially outward from the spinner by a distance which is at least 5 and is up to 20 percent of the diameter of the spinner, wherein the gases from the first annular blower converge radially inwardly with respect to the spinner axis to partially attenuate the fibers and influence the flow path of the fibers towards a direction parallel to the spinner axis;
• and
• discharging gases from an opening in a second annular blower, the second blower opening positioned radially outward from the first blower opening by a distance which is at least 5 percent and is up to 20 percent of the diameter of the spinner, wherein the gases from the second annular blower diverge radially outwardly with respect to the spinner axis to complete the attenuation of the fibers and influence the flow path of the fibers.