Celanese Acetate Limited

Robina M C Hogan

Cheryl F Corallo

William S Sanderson

David O Kutscher

Donald T Stilwell

Gary B Ellison

Mark E Scarborough

Philip I L Caenen

Ramiro Montez Diaz

Heather L Clarkson

Ronald Nivins

In the manufacture of cellulose ester fibers, a dope is extruded into filaments. Extrusion occurs in an elongated cabinet having an outlet for the filaments. The filaments are taken up after exiting the outlet. The filaments are lubricated at the outlet of the cabinet.

Manufacture of cellulose ester filaments: lubrication in the spinning cabinet

A cigarette filter tow is a cellulose acetate tow having a high uncrimping energy (UCE) and a low fly. In one embodiment, the average UCE is greater than 280 and the average fly is less than or equal to 0.030 grams per 30 minutes. In another embodiment, the average UCE is greater than 265 and the average fly is less than or equal to 0.023 grams per 30 minutes. In another embodiment, the average UCE is greater than 250 and the average fly is less than or equal to 0.017 grams per 30 minutes.

Cellulose acetate tow and method of making same

Growing community of inventors

Charlotte, NC, United States of America

Robina M C Hogan