Back to results
US 4,355,499 AGranted
Fabrics having salt-and-pepper patterns and crimped filament yarns for producing the same
AssigneeOda Gosen Kogyo Kabushiki Kaisha
InventorIsao Takai
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeOda Gosen Kogyo Kabushiki Kaisha
InventorIsao Takai
Estimating the term…
A yarn having a number of filaments is passed through between intercrossing work surfaces of two intercrossing endless belts which run in pressing engagement with each other. By suitably selecting the intercrossing angle of the belts, tension acting on the yarn and heater temperature, a crimped filament yarn is prepared having S-twist and Z-twist portions distributed in alternation along the length of the filament yarn. The filaments are tightly engaged with each other in the S-twist (or Z-twist) portions while being separated from one another in the Z-twist (or S-twist) portions. A fabic using such crimped yarn is dyed to cause the tightly bound portions to appear in a dark shade of color and the loosely bound portions in a light shade, thereby producing a salt-and-pepper pattern.
A fabric including as a component element thereof at least one crimped filament yarn having an alternating lengthwise distribution of first portions each being twisted in one direction and relatively tightly bundled and locally fused together and second portions twisted in the other direction while being bundled relatively loosely, said fabric being dyed to give said first and second portions of the yarn different shades of color.
A crimped filament yarn, comprising first portions each being twisted in one direction and relatively tightly bundled and locally fused together and second portions twisted in the other direction while being bundled relatively loosely, said first and second portions being distributed alternately along the length of the filament yarn.
Dependencies are inferred from the claim text.