Claims
- 1. A yarn having continuous hollow spin-oriented polyester filaments, wherein said polyester is of LRV about 13 to 23 with a zero-shear melting point (T.sub.M .degree.) of about 240.degree. to 265.degree. C., and a glass-transition temperature (T.sub.g) of about 40.degree. C. to 80.degree. C., said hollow filaments are of denier less than 1 and have one or more longitudinal voids with a void content (VC) comprising at least 10% of total filament volume, and said yarn is characterized by: an elongation-to-break (E.sub.B) of about 40% to about 160%, tenacity-at-7% elongation (T.sub.7) about 0.5 to 1.75 g/d, a break tenacity (T.sub.B).sub.n, normalized to 20.8 LRV, of about 5 g/d or more, (1-S/S.sub.m) ratio of at least 0.1, and differential shrinkage (DHS-S) about +2% or less, where S is the boil-off shrinkage, S.sub.m is the maximum shrinkage potential and DHS is the dry heat shrinkage (measured at 180.degree. C.) and a peak shrinkage tension temperature T(ST.sub.max) about 5.degree. to about 30.degree. C. greater than the polymer glass transition temperature T.sub.g.
- 2. A yarn according to claim 1, characterized by an elongation-to-break (E.sub.B) of about 40% to about 90%, a tenacity-at-7% elongation (T.sub.7) of about 1 to about 1.75 g/d, and a (1-S/S.sub.m) ratio of about 0.85 or more.
- 3. A yarn according to claim 1, wherein said yarn is characterized by an elongation-to-break (E.sub.B) of about 90% to about 120%, a tenacity-at-7% elongation (T.sub.7) of about 0.5 to about 1 g/d, and a (1-S/S.sub.m) ratio or at least about 0.25 or more.
- 4. A yarn having high shrinkage polyester continuous hollow filaments prepared by drawing the filaments according to claim 3 to an elongation-to-break (E.sub.B) of about 15 to about 40% at a draw temperature (T.sub.D) between the glass-transition temperature (T.sub.g) and the temperature of onset of major crystallization (T.sub.c .degree.) of the polyester polymer, without post heat treatment at a temperature greater than (T.sub.c .degree.), said filaments being characterized by: a break tenacity (T.sub.B).sub.n, normalized to 20.8 LRV, of about 5 g/d or more, a tenacity-at-7% elongation (T.sub.7) of about 1 g/d or more, a post-yield modulus (M.sub.py) of about 5 to about 25 g/d, and a (1-S/S.sub.m) of about 0.25 to 0.85, where S is the boil-off shrinkage and S.sub.m is the maximum shrinkage potential.
- 5. A mixed-shrinkage polyester continuous hollow filament yarn characterized by being comprised of two or more different filaments according to claim 3, wherein at least one filament has a shrinkage S such that its (1-S/S.sub.m) is greater than 0.85, where S is the boil-off shrinkage and S.sub.m is the maximum shrinkage potential, and at least another filament has a different shrinkage S such that its (1-S/S.sub.m) is 0.25 to 0.85 and such that there is a difference in shrinkages (S) between these filament types of about 5% or more.
- 6. A drawn mixed-shrinkage polyester continuous hollow filament yarn, prepared by drawing a yarn according to claim 5 to an elongation-to-break (E.sub.B) of about 15% to about 40%, at a draw temperature (T.sub.D) between the glass-transition temperature (T.sub.g) and the temperature of onset of major crystallization (T.sub.c .degree.) of the polyester polymer, and by post-heating treating at a temperature less than said (T.sub.c .degree.), said drawn mixed-shrinkage yarn being comprised of two or more different filaments, wherein at least one filament has a shrinkage S such that its (1-S/S.sub.m) is greater than 0.85, where S is the boil-off shrinkage and S.sub.m is the maximum shrinkage potential, and at least another filament has a different shrinkage S such that its (1-S/S.sub.m) is 0.25 to 0.85, such that there is a difference in shrinkages between these filaments of about 5% or more, and said yarn being characterized by: an elongation-to-break (E.sub.B) of about 15 to 40%, a tenacity-at-7% elongation (T.sub.7) of about 1 g/d or more, a break tenacity (T.sub.B).sub.n, normalized to 20.8 LRV, of about 5 g/d or more, and a post-yield modulus (M.sub.py) of about 5 to about 25 g/d.
- 7. A mixed-shrinkage air-jet textured polyester continuous filament yarn prepared by air-jet texturing, without heat, a yarn according to claim 5 or 6.
- 8. A bulky polyester continuous hollow filament yarn prepared by heat-relaxing a mixed-shrinkage filament yarn according to claim 7.
- 9. A bulky polyester continuous hollow filament yarn prepared by heat-relaxing a mixed-shrinkage filament yarn according to claim 5 or 6.
- 10. A yarn according to claim 1, characterized by an elongation-to-break (E.sub.B) of about 15% or more, a tenacity-at-7% elongation (T.sub.7) of about 1 to about 1.75 g/d, and a (1-S/S.sub.m) ratio of about 0.85 or more, said yarn being air-jet textured.
- 11. A false-twist textured polyester continuous filament yarn prepared by draw-false-twist texturing an as-spun yarn containing hollow filaments according to any one of claims 1, 3, 2, 12 or 5 to an elongation-to-break (E.sub.B) of about 15 to about 40%, whereby said hollow filaments are collapsed to a different cross-section, said textured yarn having a break tenacity (T.sub.B).sub.n, normalized to 20.8 LRV, of about 5 g/d or more, a tenacity-at-7% elongation (T.sub.7) of about 1 g/d or more, a post-yield modulus (M.sub.py) of about 5 to 25 g/d, and a (1-S/S.sub.m) of about 0.85 or more, where S is the boil-off shrinkage and S.sub.m is the maximum shrinkage potential.
- 12. A drawn yarn having continuous hollow polyester filaments, wherein said polyester is of LRV about 13 to 23 with a zero-shear melting point (T.sub.M .degree.) of about 240.degree. to 265.degree. C., and a glass-transition temperature (T.sub.g) of about 40.degree. C. to 80.degree. C., said hollow filaments are of denier less than 1 and have one or more longitudinal voids with a void content (VC) comprising at least 10% of total filament volume, and said yarn is characterized by: an elongation-to-break (E.sub.B) of about 15 to 40%, a tenacity-at-7% elongation (T.sub.7) of about 1 g/d or more, break tenacity (T.sub.B).sub.n, normalized to 20.8 polymer LRV, of about 5 g/d or more, a post-yield modulus (M.sub.py) of about 5 to 25 gpd. and a (1-S/S.sub.m) of about 0.85 or more, where S is the boil-off shrinkage and S.sub.m is the maximum shrinkage potential.
- 13. A drawn yarn according to claim 12, wherein said yarn is characterized by a relative disperse dye rate (RDDR), normalized to 1 dpf, of about 0.1 or more.
- 14. A yarn according to any one of claims 12, that is air-jet textured.
CROSS-REFERENCE TO RELATED APPLICATION
This application is a division of allowed application Ser. No. 08/214,717 (DP-4555-H), filed Mar. 16, 1994, now U.S. Pat. No. 5,487,859 which is itself a continuation-in-part to replace abandoned application Ser. No. 07/925,042 (DP-4555-C) filed by Aneja et al Aug. 5, 1992, and also a continuation-in-part of applications filed by Bennie et al Ser. No. 07/925,041 (DP-4555-D), also filed Aug. 5, 1992 now abandoned, and Ser. No. 08/093,156 (DP-4555-J) now U.S. Pat. No. 5,417,902, filed Jul. 23, 1993, as a continuation-in-part of abandoned application Ser. No. 07/926,538 (DP-4555-E), also filed Aug. 5, 1992, all themselves continuations-in-part of abandoned applications Ser. No. 07/647,381 (DP-4555-A), filed by Collins et al., Jan. 29, 1991, and Ser. No. 07/860,775 (DP-4555-B) filed by Collins et al., Mar. 27, 1992, as a continuation-in-part of abandoned application Ser. No. 07/647,371 (DP-4555), originally referred to as our "parent application" also filed Jan. 29, 1991 aforesaid patented, application Ser. No. 08/093,156 (DP-4555-J) being a continuation-in-part also of applications Ser. No. 08/005,672 (DP-4555-F) filed Jan. 19, 1993 and now U.S. Pat. No. 5,288,553 and Ser. No. 08/015,733 (DP-4555-G) filed Feb. 10, 1993 and now U.S. Pat. No. 5,250,245, each filed by Collins et al as a continuation-in-part of one of the aforesaid earlier applications, and also of an application Ser. No. 07/979,776 (DP-4040-H), now U.S. Pat. No. 5,356,582, filed by Aneja et al, Nov. 9, 1992, as a continuation-in-part of two applications Ser. No. 07/753,529 (DP-4040-I) and Ser. No. 07/753,769 (DP-4040-C) both filed by Knox et al., Sep. 3, 1991, and now U.S. Pat. Nos. 5,299,060 and 5,261,472 and of the following four applications, that were all filed Nov. 1, 1991, Ser. No. 07/786,582 (DP-4040-D), filed by Hendrix et al., now U.S. Pat. No. 5,244,616, Ser. No. 07,786,583 (DP-4040-E), filed by Hendrix et al., now U.S. Pat. No. 5,145,623, Ser. No. 07/786,584 (DP-4040-F), filed by Boles et al., now U.S. Pat. No. 5,223,197, and Ser. No. 07/786,585 (DP-4040-G), filed by Frankfort et al., now U.S. Pat. No. 5,223,198, all four filed as continuations-in-part of application Ser. No. 07/338,251 (DP-4040-B), filed Apr. 14, 1989, now (Knox and Noe) U.S. Pat. No. 5,066,447, itself a continuation-in-part of abandoned application Ser. No. 07/053,309 (DP-4040-A), filed May 22, 1987, itself a continuation-in-part of abandoned application Ser. No. 06/824,363 (DP-4040), filed Jan. 30, 1986.
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Continuation in Parts (10)
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925042 |
Aug 1992 |
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926538 |
Aug 1992 |
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647381 |
Jan 1991 |
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647371 |
Jan 1991 |
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05672 |
Jan 1993 |
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979776 |
Nov 1992 |
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753529 |
Sep 1991 |
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338251 |
Apr 1989 |
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53309 |
May 1987 |
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824363 |
Jan 1986 |
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