Claims
- 1. Thermoplastic polymer filaments having a ratio of the crystalline orientation factor (f.sub.c) to the amorphous orientation factor (f.sub.a) is 1.2 or less, while f.sub.c is 0.9 or above and a crystal size of less than 40 .ANG. in the 100 and 105 planes and less than 30 .ANG. in the 010 plane.
- 2. Thermoplastic polymer filaments as set forth in claim 1 exhibiting radial uniformity of birefringence.
- 3. Thermoplastic polymer filaments as set forth in claim 1 possessing an as-spun birefringence of 0.20-0.22.
- 4. Filaments according to claim 1 formed of industrial grade polyethylene terephthalate polymer and having a tenacity of 8-9 g/d, a birefringence of 0.20-0.22 and a crystalline X-ray diffraction pattern.
- 5. Filaments according to claim 1 formed of textile grade polyethylene terephthalate polymer and having a tenacity of 7-9 g/d, a birefringence of 0.20-0.22 and a crystalline X-ray diffraction pattern.
- 6. Thermoplastic polymer filaments according to claim 1 formed of polyethylene terephthalate polymer and having a tenacity of 7-9 g/d, a birefringence of 0.20-0.22, and exhibiting a crystalline X-ray diffraction pattern.
- 7. Thermoplastic polymer filaments according to claim 1 formed of nylon polymer and having a birefringence of 0.045-0.060 and exhibiting a crystalline X-ray diffraction pattern.
- 8. Thermoplastic polymer filaments as set forth in claim 1 wherein said ratio is within the range of 1.0 to 1.15.
- 9. Thermoplastic polymer filaments as set forth in claim 1 having a weight percent crystallinity of less than 40.
- 10. Thermoplastic polymer filaments as set forth in claim 1 having a weight percent crystallinity of less than 25.
- 11. Thermoplastic polymer filaments having a weight percent crystallinity of less than 40 and a crystal size of less than 40 .ANG. in the 100 and 105 planes and less than 30 .ANG. in the 010 plane.
- 12. Thermoplastic polymer filaments as set forth in claim 11 in which the weight percent crystallinity is less than 25.
- 13. Thermoplastic polymer filaments according to claim 11 formed of polyethylene terephthalate polymer and having a tenacity of 7-9 g/d, a birefringence of 0.20-0.22, and exhibiting a crystalline X-ray diffraction pattern.
- 14. Thermoplastic polymer filaments according to claim 11 formed of nylon polymer and having a birefringence of 0.045-0.060 and exhibiting a crystalline X-ray diffraction pattern.
- 15. Thermoplastic polymer filaments as set forth in claim 11 exhibiting radial uniformity of birefringence.
- 16. Thermoplastic polymer filaments as set forth in claim 11 possessing an as-spun birefringence of 0.20-0.22.
- 17. Filaments according to claim 11 formed of industrial grade polyethylene terephthalate polymer and having a tenacity of 8-9 g/d, a birefringence of 0.20-0.22 and a crystalline X-ray diffraction pattern.
- 18. Filaments according to claim 11 formed of textile grade polyethylene terephthalate polymer and having a tenacity of 7-9 g/d, a birefringence of 0.20-0.22 and a crystalline X-ray diffraction pattern.
CROSS-REFERENCE TO RELATED APPLICATION
This application is a continuation-in-part of application Ser. No. 07/830,704 filed Feb. 4, 1992, now U.S. Pat. No. 5,268,133 granted Dec. 7, 1993, which is a continuation-in-part of application Ser. No. 07/525,874, filed May 18, 1990, now U.S. Pat. No. 5,149,480 granted Sep. 22, 1992.
US Referenced Citations (15)
Foreign Referenced Citations (1)
Number |
Date |
Country |
670932 |
Jun 1963 |
CAX |
Non-Patent Literature Citations (1)
Entry |
T. Kawaguchi, Industrial Aspects of High-Speed Spinning, Chapter 3, "Industrial View on High-Speed Spinning", p. 8-15 (1985). |
Continuation in Parts (2)
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Number |
Date |
Country |
Parent |
830704 |
Feb 1992 |
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Parent |
525874 |
May 1990 |
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