Paul Jeffrey Tucker

US Patent:

49099760, Mar 20, 1990

Filed:

May 9, 1988

Appl. No.:

7/191446

Inventors:

John A. Cuculo - Raleigh NC
Paul A. Tucker - Raleigh NC
Gao-Yuan Chen - Raleigh NC
Chon-yie Lin - Raleigh NC
Jeffrey Denton - Raleigh NC
Ferdinand Lundberg - Raleigh NC

Assignee:

North Carolina State University - Raleigh NC

International Classification:

D01F 662

US Classification:

26421115

Abstract:

The high speed melt spinning of synthetic polymer fibers is provided with on-line zone heating and cooling by which the strand emerging from the spinneret is initially cooled to an optimum temperature above the glass transition point of the polymer, the maintained near that temperature for a period of time to promote development of desirable fiber properties such as crystallization and crystal orientation, and then finally cooled below the solidification point for take up.

US Patent:

RE359726, Nov 24, 1998

Filed:

Mar 25, 1996

Appl. No.:

8/622431

Inventors:

John A. Cuculo - Raleigh NC
Paul A. Tucker - Raleigh NC
Gao-Yuan Chen - Apex NC
Ferdinand Lundberg - Raleigh NC

Assignee:

North Carolina State University - Raleigh NC

International Classification:

D02G 300
D02G 302

US Classification:

428364

Abstract:

Ultra-oriented, crystalline synthetic filaments with high tenacity are produced by extrusion of a fiber-forming synthetic polymer melt into a liquid isothermal bath maintained at a temperature of at least 30. degree. C. above the glass transition temperature of the polymer, withdrawing the filaments from the bath and then winding up the filaments. Polymer filaments so produced are characterized in that the ratio of the crystalline orientation factor (f. sub. c) to the amorphous orientation factor (f. sub. a) is 1. 2 or less, and are further characterized in that the percent crystallinity is less than 40. The filaments also have a fine crystal size. The crystal size is less than 40. ANG. in the 100 and 105 planes and less than 30. ANG. in the 010 plane.

US Patent:

57336539, Mar 31, 1998

Filed:

May 7, 1996

Appl. No.:

8/643925

Inventors:

John A. Cuculo - Raleigh NC
Paul A. Tucker - Raleigh NC
Ferdinand Lundberg - Garner NC
Gang Wu - Beijing, CN
Gao-Yuan Chen - Apex NC

Assignee:

North Carolina State University - Raleigh NC

International Classification:

D02G 300

US Classification:

428364

Abstract:

Ultra-oriented, crystalline synthetic filaments with a combination of high tenacity, high dimensional stability, high modulus, and a high fraction of taut-tie molecular phase are produced by extruding a fiber-forming synthetic polymer melt into a liquid isothermal bath, withdrawing the filaments from the bath and then post-treating them at a very low draw ratio. The bath is preferably maintained at a temperature of at least 30. degree. C. above the glass transition temperature of the polymer to enhance the orientation and promote the formation of stable extended chains. Polymer filaments so produced are characterized in that they have ultra-high birefringence, high tenacity and modulus, a high dimensional stability, and a high fraction of taut-tie molecular phase.

US Patent:

51715040, Dec 15, 1992

Filed:

Mar 28, 1991

Appl. No.:

7/676641

Inventors:

John A. Cuculo - Raleigh NC
Paul A. Tucker - Raleigh NC
Chon-Yie Lin - Chester VA
Ferdinand Lundberg - Raleigh NC

Assignee:

North Carolina State University - Raleigh NC

International Classification:

D01D 5084
D01D 5092

US Classification:

264178F

Abstract:

The invention provides improved thermoplastic high strength, highly oriented fibers and a process for producing the fibers by melt spinning a thermoplastic polymer to form a threadline, preferably passing the threadline through a thermal conditioning zone and then quenching the threadline. The quenched threadline is passed through a hydraulic drag bath maintained at a temperature of greater than the glass transition temperature of the polymer which substantially increases the threadline stress and results in drawing of the threadline. The threadline is withdrawn from the drag bath at a withdrawal rate of at least 3,000 meters per minute.

US Patent:

54056969, Apr 11, 1995

Filed:

Dec 2, 1993

Appl. No.:

8/161320

Inventors:

John A. Cuculo - Raleigh NC
Paul A. Tucker - Raleigh NC
Gao-Yuan Chen - Midlothian VA
Ferdinand Lundberg - Raleigh NC

Assignee:

North Carolina State University - Raleigh NC

International Classification:

D02G 300

US Classification:

428364

Abstract:

Ultra-oriented, crystalline synthetic filaments with high tenacity are produced by extrusion of a fiber-forming synthetic polymer melt into a liquid isothermal bath maintained at a temperature of at least 30. degree. C. above the glass transition temperature of the polymer, withdrawing the filaments from the bath and then winding up the filaments. Polymer filaments so produced are characterized in that the ratio of the crystalline orientation factor (f. sub. c) to the amorphous orientation factor (f. sub. a) is 1. 2 or less, and are further characterized in that the percent crystallinity is less than 40. The filaments also have a fine crystal size. The crystal size is less than 40. ANG. in the 100 and 105 planes and less than 30. ANG. in the 010 plane.

US Patent:

51494809, Sep 22, 1992

Filed:

May 18, 1990

Appl. No.:

7/525874

Inventors:

John A. Cuculo - Raleigh NC
Paul A. Tucker - Raleigh NC
Gao-Yuan Chen - Chester VA
Ferdinand Lundberg - Raleigh NC

Assignee:

North Carolina State University - Raleigh NC

International Classification:

D01D 662

US Classification:

264178F

Abstract:

Ultra-oriented, crystalline synthetic filaments with high tenacity are produced by extrusion of a fiber-forming synthetic polymer melt into a liquid isothermal bath maintained at a temperature of at least 30. degree. C. above the glass transition temperature of the polymer, withdrawing the filaments from the bath and then winding up the filaments. Polyethylene terephthalate filaments so produced at 3000-5000 m/min exhibit a crystalline structure and possess birefringence of 0. 20-0. 22, tenacity of 7-9 g/d, break elongation of 14%-30% and boil-off shrinkage of 5%-10%.

US Patent:

52681335, Dec 7, 1993

Filed:

Feb 4, 1992

Appl. No.:

7/830704

Inventors:

John A. Cuculo - Raleigh NC
Paul A. Tucker - Raleigh NC
Gao-Yuan Chen - Midlothian VA
Ferdinand Lundberg - Raleigh NC

Assignee:

North Carolina State University - Raleigh NC

International Classification:

D01D 508
D01D 512
D01F 662

US Classification:

264178F

Abstract:

Ultra-oriented, crystalline synthetic filaments with high tenacity are produced by extrusion of a fiber-forming synthetic polymer melt into a liquid isothermal bath maintained at a temperature of at least 30. degree. C. above the glass transition temperature of the polymer, withdrawing the filaments from the bath and then winding up the filaments. Polyethylene terephthalate filaments so produced at 3000-5000 m/min exhibit a crystalline structure and possess birefringence of 0. 20-0. 22, tenacity of 7-9 g/d, break elongation of 14-30% and boil-off shrinkage of 5-10%.

Address:

6013 Greystone Dr, Matthews, NC 28104

VIN:

2A8GM68X47R145154

Make:

CHRYSLER

Model:

PACIFICA

Year:

2007

Address:

5800 Kirkpatrick Rd, Charlotte, NC 28211

VIN:

4JGBF71E57A250165

Make:

MERCEDES-BENZ

Model:

GL-CLASS

Year:

2007