Patent ID: 6336801
Filing Date: 2002-01-08
Classification: D01D

Abstract:
An apparatus for forming meltblown material from a molten polymer, said apparatus comprising:a die configured with channels through which molten polymer is extruded for forming meltblown fibers, said die further comprising a die tip having a die tip apex defining outlets at extreme ends of said channels, said outlets having the smallest cross-sectional area of said channels; at least one pair of air plates disposed relative to said die tip to define air channels proximate to said die tip for directing attenuating air against the molten polymer fibers extruded from said outlets; and a heating element disposed generally across from said die tip apex and said outlets for radiating heat thereto across said air channels so that attenuating air directed through said air channels may be at a temperature below that necessary to maintain said polymer in a molten state.