US 7,387,976 B2 | ||
Composite fiber structure and method for producing the same | ||
Kenji Baba, Osaka (Japan); and Atsushi Suzuki, Osaka (Japan) | ||
Assigned to Teijin Fibers Limited, Osaka (Japan) | ||
Appl. No. 11/587,390 PCT Filed Apr. 21, 2005, PCT No. PCT/JP2005/008099 § 371(c)(1), (2), (4) Date Oct. 24, 2006, PCT Pub. No. WO2005/102683, PCT Pub. Date Nov. 03, 2005. |
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Claims priority of application No. 2004-129450 (JP), filed on Apr. 26, 2004; and application No. 2004-292385 (JP), filed on Oct. 05, 2004. | ||
Prior Publication US 2007/0166540 A1, Jul. 19, 2007 | ||
This patent is subject to a terminal disclaimer. | ||
Int. Cl. B32B 5/26 (2006.01) |
U.S. Cl. 442—268 [156/251; 156/304.6; 156/296; 428/373; 428/370] | 16 Claims |
1. A composite fiber structure comprising a polyester elastic fiber structure having adhered on both surfaces thereof polyester
woven or knitted fabrics with a polyester adhesive, characterized in that the polyester elastic fiber structure satisfies
the following requirements (1) to (5):
(1) the polyester elastic fiber structure contains side-by-side or eccentric core/shell conjugate short fibers A, which contain
two kinds of polyester different from each other in intrinsic viscosity, have microcrimps of from 30 to 60 crimps per 25 mm
exhibited by latent crimps, and are applied with mechanical crimps of from 7 to 15 crimps per 25 mm, as a matrix, and
dispersed and mixed therein elastic conjugate fibers B, which contain a thermoplastic elastomer having a melting point lower
by 40° C. or more than the two kinds of polyester, and a nonelastic polyester, with at least the thermoplastic elastomer being
exposed on a surface of the fibers,
(2) has thermally fixed points formed by heat-melting the conjugate short fibers A and the elastic conjugate fibers B intersecting
with each other,
(3) has thermally fixed points formed with the elastic conjugate fibers B intersecting with each other,
(4) has a mixing ratio of the conjugate short fibers A and the elastic conjugate fibers B of from 90/10 to 10/90, and
(5) has a single filament fineness of the conjugate short fibers A of from 2 to 15 dtex.
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