D - Textiles – Paper – 01 – D
Patent
D - Textiles, Paper
01
D
D01D 5/088 (2006.01) A61F 13/15 (2006.01) D01D 4/02 (2006.01) D01D 5/08 (2006.01) D01F 6/04 (2006.01) D01F 6/06 (2006.01) D01F 11/04 (2006.01) D04H 1/54 (2006.01) D04H 3/16 (2006.01)
Patent
CA 2125016
Process and apparatus for spinning polymer filaments permits the obtaining of skin-core filament structure by feeding a polymer composition to a spinnerette at a flow rate sufficient to obtain a spinning speed of about 10 to 200 meters per minute through the spinnerette; heating the polymer composition at a location at or adjacent to the spinnerette so as to heat the polymer composition to a sufficient temperature to obtain a skin-core filament structure upon quenching in an oxidative atmosphere; extruding the heated polymer composition through the spinnerette at a spinning speed of about 10 to 200 meters per minute to form molten filaments; and quenching the molten filaments in an oxidative atmosphere so as to effect oxidative chain scission degradation of at least a surface of the molten filaments to obtain filaments having a skin-core structure.
Coffin Richard J.
Freeman Walter J.
Gupta Rakesh K.
Sibal Shiv
Takeuchi Kunihiko
Fibervisions L.p.
Hercules Incorporated
Moffat & Co.
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