Extended length and higher density packages of bulky yarns and methods of making the same
AssigneeInvista North America S.A R.L.
InventorsMichael MESSINIDES, John Randall MATTIS, William Thomas RILEY
Life of this patent
Estimating the term…
Abstract
A method of winding bulked continuous filament yarn is disclosed, which enables superior yarn package formation, including higher density packages with excellent shape and yarn takeoff characteristics. The method uses unique helix angles and winding profiles in a non-adjacent and adjacent yarn pattern, achieved by a unique winding control strategy that constantly monitors spindle speed, desired wind ratio, traverse cam speed, and surface speed.
Claims17
1-12. (canceled)
A package of bulked continuous filament yarn having a final diameter comprising a packing density of from about 0.4 grams per cm3 to about 0.6 grams per cm3, wherein said package further comprises a non-adjacent winding pattern ending at a package diameter from about 47% to about 65% of said final diameter, and a precision adjacent winding pattern starting at a package diameter of from about 47% to about 65% of said final diameter.
18-22. (canceled)
24-27. (canceled)
A package of bulked continuous filament yarn having a final diameter comprising a packing density of from about 0.4 grams per cm3 to about 0.6 grams per cm3, wherein said package further comprises a non-adjacent winding pattern ending at a package diameter to tube core diameter ratio from about 1.6:1 to about 2.3:1, and a precision adjacent winding pattern starting at a package diameter to tube core diameter ratio from about 1.6:1 to about 2.3:1.
(canceled)
A package of bulked continuous filament yarn having a ratio of packing density (measured in grams per cm3) to final package diameter (measured in cm) greater than 0.018:1.
35-36. (canceled)
Dependencies are inferred from the claim text.