Patent ID: 6814555
Filing Date: 2004-11-09
Classification: D01D,Y10S

Abstract:
An apparatus for meltblowing a first type of liquid material into a first plurality of strands and a second type of liquid material into a second plurality of strands and combining the first and second pluralities of strands into a plurality of multi-component filaments, comprising:a die tip including an external surface, a first liquid input configured to communicate with a supply of the first type of liquid material and a second liquid input configured to communicate with a supply of the second type of liquid material; linear array of first liquid outlets each for extruding a corresponding plurality of first strands; linear array of second liquid outlets each for extruding a corresponding plurality of second strands, each second outlet tangentially meeting with a corresponding one of said first liquid outlets at said external surface; a plurality of first liquid passages, each communicating between said first liquid input and a selected one of said first liquid outlets; a plurality of second liquid passages, each communicating between said second liquid input and a selected one of said second liquid outlets, said first and second liquid passages respectively converging at said first and second liquid outlets for respectively extruding the pluralities of first and second strands, the first and second strands combining together immediately after extrusion to form the plurality of multi-component filaments having a cross-sectional configuration combining the first and second types of liquid material; and air passages positioned on opposite sides of said first and second liquid outlets and configured to direct process air to impinge the multi-component filaments.