Richard E Thek

US Patent:

51466511, Sep 15, 1992

Filed:

Dec 21, 1990

Appl. No.:

7/631432

Inventors:

Joseph J. Duffy - Newark DE
Jerry F. Potter - Seaford DE
Elwood A. Roth - Seaford DE
Kalika R. Samant - Seaford DE
Richard E. Thek - Seaford DE
Maurice C. Todd - Chadds Ford PA

Assignee:

E. I. Du Pont de Nemours and Company - Wilmington DE

International Classification:

D01G 2306

US Classification:

19 65T

Abstract:

Controlling the cross-sectional characteristics of moving tow lines by providing monitors and positioning devices so as to improve stuffer box crimp uniformity. The mass distribution profile of a filamentary tow band is continuously measured as a function of the width of the band, and the information obtained is used to change the position of the band when a deviation from a predetermined value is noted. Positioning devices are used to carry out the movement or adjusting of the band in accordance with a signal so as to correct the deviation and present to a crimping apparatus, such as a stuffer box crimper, a band having a uniform mass distribution profile.