Claims
- 1. A polyester continuous hollow filament yarn, wherein said polyester is of LRV about 13 to 23 with a zero-shear melting point (T.sub.M.sup.o) of about 240.degree. to 265.degree. C., and a glass-transition temperature (Tg) of about 40.degree. C. to 80.degree. C., the hollow filaments are of denlet about 1 to about 5 and have one or more longitudinal voids with a void content (VC) comprising at least 10% of total filament volume, and said yarn is of elongation-to-break (E.sub.B) about 40% to about 160%, tenacity-at-7% elongation (T.sub.7) about 0.5 to 1.75 g/d, break tenacity (T.sub.B).sub.n, normalized at 20.8 polymer LRV, of about 5 g/d or more, (1-S/S.sub.m) value of 0.4 or more, 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 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, wherein said yarn has 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) value of about 0.4 or more.
- 3. A yarn according to claim 1, wherein said yarn has an elonganion-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) value of about 0.85 or more.
- 4. A yarn according to claim 1, comprising two or more different filaments, wherein at least one filament has a shrinkage S such that the (1-S/S.sub.m) value is greater than 0.85, and at least another filament has a shrinkage S such that the (1-S/S.sub.m) value is in the range 0.4 to 0.85, where s is the boil-off shrinkage and S.sub.m is the maximum shrinkage potential, such that the shrinkage difference between these filaments is at least 5%
- 5. A polyester continuous hollow filament yarn, wherein said polyester is of LRV about 13 to 23 with a zero-shear melting point (T.sub.M.sup.o) 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., the hollow filaments are of denier about 1 to about 5 and have one or more longitudinal voids with a void content (VC) comprising at least 10% of total filament volume, and said yarn has an siongallon-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 g/d, and a (1-S/S.sub.m) value of about 0.85 or more, where S is the boil-off shrinkage and S.sub.m is the maximum shrinkage potential.
- 6. A yarn according to claim 5, having a relative disperse dye rate (RDDR), normalized to 1 dpf, of about 0.1 or more.
- 7. A yarn according to claim 5 or 6, wherein the polyester filaments are false twist-textured collapsed hollow filaments.
- 8. A polyester continuous hollow filament yarn, wherein said polyester is of LRV about 13 to 23 with a zero-shear melting point (T.sub.M.sup.o) 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., the hollow filaments are of denier about 1 to about 5 and have one or more longitudinal voids with a void content (vC) comprising at least 10W of total filament volume, and said yarn has 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 g/d, and a (1-S/S.sub.m)-value of about 0.4 to about 0.85, where S is the boil-off shrinkage and S.sub.m is the maximum shrinkage potential.
- 9. A yarn according to any one of claims 1, 2, 3, 8 or 4, wherein the hollow filaments have a denier of about 1 to about 3, elongation-to-break (E.sub.B) of about 40% to about 120%, and a (1-S/S.sub.m)-value of about 0.6 or more.
- 10. A polyester continuous hollow filament yarn, wherein said polyester is of LRV about 13 to 23 with a zero-shear melting point (T.sub.M.sup.o) of about 240.degree. to 265.degree. C., and a glass-transition temperature (T.sub.g) of about 40` C. to 80.degree. C., the hollow filaments are of denier about 1 to about 5 and have one or more longitudinal voids with a void content (VC) comprising at least 10% of total filament volume, and said yarn has 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 g/d, said yarn being comprised of two or more different filaments, wherein at least one filament type has a shrinkage S such that the (1-S/S.sub. m)-value is greater than 0.85, and at least another filament has a shrinkage S such that the (1-S/S.sub.m) value is in the range 0.4 to 0.85, where S is the boil-of shrinkage and S.sub.m is the maximum shrinkage potential, and wherein the difference between the shrinkages S of these filaments is at least
- 11. A yarn according to any one of claims 3, 5, 4, or 10, wherein the polyester filaments are air jet-textured and/or heat-relaxed filaments.
CROSS-REFERENCE TO RELATED APPLICATIONS
This is a division of application Ser. No. 07/979,776, filed Nov. 9, 1992, a continuation-in-part of applications 07/753,529 and 07/753,769, both filed by Knox et al, Sep. 3, 1991, and now, respectively, U.S. Pat. Nos. 5,229,060 and 5,261,472 and of the following four applications, that were all filed Nov. 1, 1991, 07/786582, filed by Hendrix et al, and now U.S. Pat. No. 5,244,616, 07/786,583, filed by Hendrix et al, and now U.S. Pat. No. 5,145,623, 07/786,584, filed by Boles et al now U.S. Pat. No. 5,223,197, and 07/786,585, filed by Frankfort et al now U.S. Pat. No. 5,223,198, all filed as continuations-in-part of application Ser. No. 07/338,251, filed Apr. 14, 1989, now U.S. Pat. No. 5,066,447, and which is sometimes referred to herein as the "parent application" being itself a continuation-in-part of abandoned application Ser. No. 07/053,309, filed May 22, 1987, itself a continuation-in-part of abandoned application Ser. No. 06/824,363, filed Jan. 30, 1986; and is also a continuation-in-part of abandoned application Ser. Nos. 07/925,042, filed by Aneja et al, and 07/925,041 and 07/926,538, now U.S. Pat. No. 5,219,736, filed by Bennie et al, all three filed Aug. 5, 1992 as continuations-in-part of abandoned application 07/647,381, filed by Collins et al, Jan. 29, 1991, and of abandoned application Ser. No. 07/860,776, filed by Collins et al, Mar. 27, 1992, as a continuation-in-part of abandoned application Ser. No. 07/647,371, also filed Jan. 29, 1991.
US Referenced Citations (17)
Foreign Referenced Citations (1)
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3011118 |
Oct 1981 |
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Related Publications (14)
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753769 |
Sep 1991 |
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786582 |
Nov 1991 |
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786583 |
Nov 1991 |
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786584 |
Nov 1991 |
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786585 |
Nov 1991 |
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925042 |
Aug 1992 |
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925041 |
Aug 1992 |
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926538 |
Aug 1992 |
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786583 |
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786584 |
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786585 |
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925041 |
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926538 |
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860776 |
Mar 1992 |
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Divisions (1)
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979776 |
Nov 1992 |
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Continuation in Parts (6)
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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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647381 |
Jan 1991 |
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647371 |
Jan 1991 |
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