Plastic and nonmetallic article shaping or treating: processes – Forming continuous or indefinite length work – Shaping by extrusion
Patent
1992-09-14
1993-12-14
Tentoni, Leo B.
Plastic and nonmetallic article shaping or treating: processes
Forming continuous or indefinite length work
Shaping by extrusion
106184, 106196, 264208, 2642106, 2642108, 264211, 26421111, D01D 1006, D01F 102, D01F 230
Patent
active
052699960
ABSTRACT:
A method for producing ultra fine denier cellulose acetate fibers that entails spinning a spinning solution containing adequately high amounts of cellulose acetate in acetone wherein the cellulose acetate has a falling ball viscosity of 15 to 70 seconds wherein the spinning is conducted through spinnerettes having holes that have a diameter of less than 36 microns followed by drying at a temperature of about 50.degree. to 80.degree. C. at a draw ratio of 0.9 to 1.7.
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Japan Textile News, M. Okamoto, "Ultra-fine Fiber and Its Application", 94 Nov., 1977
Nippon Nozzle Co., Ltd., publication titled "Spinnerettes Nippon Nozzle"
Lee Benedict M.
Winebarger Charles S.
Eastman Kodak Company
Heath, Jr William P.
Montgomery Mark A.
Tentoni Leo B.
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