Attenuating melt-extruded filaments with converging...

Details Attenuating melt-extruded filaments with converging... Attenuating melt-extruded filaments with converging...

D - Textiles, Paper

04

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18/552, 18/586

D04H 3/03 (2006.01) D01D 5/098 (2006.01) D04H 3/07 (2006.01) D04H 3/16 (2006.01)

Patent

CA 1038571

PROCESS AND APPARATUS FOR PRODUCING FIBROUS STRUCTURES ; ABSTRACT OF THE DISCLOSURE Apparatus and method for producing filamentary material by extruding substantially axially through an orifice comprising contacting the extruded filament stream downstream of the orifice and prior to hardening with a plurality of converging, substan- tially planar, high velocity gas streams, each moving substantially in the direction of the filament stream such that they converge upon the filament stream at an angle of from about 45 to 5 degrees from the axis of the polymer extrusion nozzle. The planes of the gas streams intersect at a point which is at a distance measured perpendicularly from the axis of the extrudate stream at least equal to the diameter of the extrudate stream.

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