Henry C Jackson

US Patent:

41762118, Nov 27, 1979

Filed:

May 2, 1978

Appl. No.:

5/902199

Inventors:

Henry G. Jackson - Greenville SC

Assignee:

Phillips Petroleum Company - Bartlesville OK

International Classification:

B28B 2154

US Classification:

428397

Abstract:

A method for producing polyester filament having a cross-section of C-shape by melt spinning polyester through a spinneret so that each filament is made through an array of holes having a center hole with eight holes equally spaced around the center hole with the size and spacing of the holes within a specified relationship. A method for producing partially oriented yarn having a cross-section of C-shape. A polyester filament produced, a yarn composed of a multiplicity of these filaments, and a fabric produced from the yarn.

US Patent:

42475058, Jan 27, 1981

Filed:

May 5, 1978

Appl. No.:

5/903261

Inventors:

Henry G. Jackson - Greenville SC

Assignee:

Phillips Petroleum Company - Bartlesville OK

International Classification:

D01D 508

US Classification:

264176F

Abstract:

Polymers are melt spun by extruding threadlines of filaments from a spinneret; quenching the filaments through a quench zone; reducing the tension on the threadlines of filaments to a value substantially equal to the tension at the hereinafter-mentioned winding point, by converging each threadline of filaments to form a strand while applying a lubricant; and winding each strand on a spool at a take-up speed of at least about 1800 meters per minute, and without further reducing the tension by means, such as godets. Apparatus for carrying out the method is described. The convergence means may be adjustable to change the position thereof relative to the bottom of the quench zone.