Fabric including polymer filaments having profiled cross-section
View Patent ↗The present invention is directed to a multi-filament yarn formed at least in part from filaments having cross-sectional zig-zag or double “W” shape with a 180 degree axis of symmetry. The filaments have a denier per filament generally in the range of about 0.1 to about 4.0. Fabrics made from yarns formed with the filaments have high moisture wicking, soft hand, and a silk-like lustrous appearance.
1. A fabric formed from a yarn comprising at least in part a synthetic polymer filament, wherein said filament comprises a transverse cross-section that includes seven contiguous segments in zig-zag configuration, wherein each segment defines a proximal end and a distal end, wherein a distal end of a first segment is connected to a proximal end of a second segment, wherein a distal end of the second segment is connected to a proximal end of a third segment, wherein a distal end of the third segment is connected to a proximal end of a fourth segment, wherein a distal end of the fourth segment is connected to a proximal end of a filth segment, wherein a distal end of the fifth segment is connected to a proximal end of a sixth segment, wherein a distal end of the sixth segment is connected to a proximal end of a seventh segment, and wherein a pivot point is defined along the fourth segment and the transverse cross-section of the filament is symmetrical when rotated 180 degrees about said pivot point; and wherein said fabric is a double sided fabric comprising said synthetic polymer filament on one side of said fabric; and further wherein a wetting agent is applied to the one side of said fabric.
2. The fabric of claim 1 wherein adjacent segments of the synthetic polymer filament form an angle between about 40 degrees and about 60 degrees.
3. The fabric of claim 1 , wherein the synthetic polymer filament comprises a polyamide synthetic polymer selected from the group consisting of: polyhexamethylene adipamide; polycaproamide; polyenanthamide; nylon 10; polydodecanolactam; polytetramethylene adipamide; polyhexamethylene sebacamide homopolymer; a polyamide of n-dodecanedioic acid and hexamethylenediamine homopolymer; and a polyamide of dodecamethylenediamine and n-dodecanedioic acid.
4. The fabric of claim 1 wherein the synthetic polymer filament has a denier per filament of about 1.0 to about 4.0.
5. The fabric of claim 1 wherein the synthetic polymer filament has an indentation-to-thickness ratio between about 0.25 and about 0.6.
6. The fabric of claim 1 , wherein the yarn comprises at least about 50% of the total number of filaments in said yarn of the synthetic polymer filaments.
7. The fabric of claim 1 wherein the yarn formed from the synthetic polymer filaments has a denier between about 15 and about 200.
8. The fabric of claim 1 , wherein said wetting agent is selected from the group consisting of a hydrophilic polyamide, hydrophilic silicone, and hydrophilic polyester.
9. A fabric comprising at least in part a synthetic polymer filament having a transverse cross-section having multiple segments arranged in a double “W” shape including a upright W-shaped portion sharing a segment with an inverted W-shaped portion, wherein said fabric is double-sided fabric comprising said synthetic polymer filament on one side of said fabric; and further wherein a wetting agent is applied to the one side of said fabric.