| US 7,585,441 B2 | ||
| Process of making cellulose acetate tow | ||
| Philip I. L. Caenen, Lanaken (Belgium); and William S. Sanderson, Blacksburg, Va. (US) | ||
| Assigned to Celanese Acetate, LLC, Dallas, Tex. (US) | ||
| Filed on Jun. 25, 2004, as Appl. No. 10/877,799. | ||
| Prior Publication US 2005/0288163 A1, Dec. 29, 2005 | ||
| This patent is subject to a terminal disclaimer. | ||
| Int. Cl. D01D 5/22 (2006.01); D01F 2/28 (2006.01); D02G 1/12 (2006.01) | ||
| U.S. Cl. 264—103 [264/130; 264/168; 264/178 F; 264/187; 264/207; 264/211.12; 264/211.14; 264/234] | 13 Claims |
| 1. A process for making a cellulose acetate tow comprising the steps of:
spinning a dope comprising a solution of cellulose acetate and solvent,
taking-up the as-spun cellulose acetate filaments,
lubricating the cellulose acetate filaments,
forming a tow from the cellulose acetate filaments,
plasticizing the tow with a plasticizer consisting of water,
crimping the tow after plasticizing the tow,
drying the crimped tow, and
baling the dried crimped tow.
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