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AssigneeEastman Chemical Company
InventorsJeremy Kenneth Steach, Scott Gregory Gaynor, Jason Michael Spruell, Mohammad Abouelreesh Hassan, Guo Wei Qin, Yancey Appling, Syed Ali Shah, James M. Posa, Koushik Ghosh, Mounir Izallalen
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Staple fibers and filament yarns formed from cellulose esters, such as cellulose acetate, are described herein, along with methods of making the fibers and their use in nonwoven fabrics and articles. The filament yarns and fibers described herein may be coated with at least one finish and, in some cases, may be coated with two or more finishes selected to enhance the properties of the fibers. Staple fibers as described herein may be used to produce nonwoven webs that are strong, soft, absorbent, and biodegradable, and may be used in wet or dry nonwoven articles for a variety personal care, medical, industrial, and commercial applications.
A staple fiber formed from cellulose acetate, wherein said fiber has a denier of about 0.5 to about 2.75 and a crimp frequency of from about 8 to about 22 CPI measured according to ASTM D3937, and wherein a plurality of said fibers exhibit a fiber-to-fiber staple pad coefficient of friction of not more than about 0.70 measured according to ASTM D3412, wherein said fiber is at least partially coated with a spinning finish and a top-coat finish, wherein said spinning finish is present on said fiber in an amount of at least about 0.5% FOY measured by solvent extraction according to ASTM D2257;
A process for producing crimped, coated cellulose acetate staple fibers, said process comprising:
Dependencies are inferred from the claim text.