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US3899562A Expired / Lapsed US ⏱️ 0.0 years remaining

Process for the production of mixed yarns

Assignee: Vickers Zimmer AG
•
Filing: 1973-10-23
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Granted: 1975-08-12
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Expires: 1993-10-23
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Abstract

Abstract The invention relates to a process for the production of mixed yarns of synthetic polymers, especially of polyamide and polyester filaments produced according to the melt spinning process. The mixed yarns are prepared from extruded monofilament thread groups of different colors alternately disposed and subsequently gathered into a yarn with the monofilaments intermixed to provide a homogeneous cross section.

Inventors

  • 👤 Anton Seidl

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-06 09:40
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/08; D01D5/082; D01D4/00; D01D4/02; D02; D02G; D02G1/00; D02G1/18; D02G3/00; D02G3/22; D02G3/34; D02G3/346

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 164 words
A PROCESS FOR CONTINUOUSLY PRODUCING A HOMOGENEOUS, MIXED MULTICOLORED YARN WHICH COMPRISES THE SEPARATE STEPS OF: A. MELT SPINNING A COLORED, SYNTHETIC POLYAMIDE OR POLYESTER POLYMER THROUGH SPINNING NOZZLES AND SOLIDIFYING THE RESULTANT POLYMER TO PROVIDE A PLURALITY OF MONOFILAMENT GROUPS, B. MELT SPINNING A SECOND, DIFFERENT COLORED, SYNTHETIC POLYAMIDE OR POLYESTER THROUGH A SECOND DIFFERENT SET OF SPINNING NOZZLES AND SOLIDIFYING THE RESULTANT POLYMER TO PROVIDE A PLURALITY OF MONOFILAMENT GROUPS, C. GUIDING SAID MONOFILAMENT GROUPS OF DIFFERENT COLOR FROM THE DIFFERENT NOZZLES IN SEPARATE, SPACED, DIFFERENT COLORED PLANES UPON EMERGENCE FROM SAID SPINNING NOZZLES, THE FILAMENT GROUPS OF EACH OF SAID DIFFERENT COLORED PLANES BEING SPACED APART AND ALTERNATING WITH EACH OTHER, AND COMBINING THE MONOFILAMENT GROUPS OF EACH COLORED PLANE TO PROVIDE A PLANE OF ALTERNATELY SPACED APART, DIFFERENT COLORED, COMBINED MONOFILAMENT GROUPS D. SUBSQUENTLY GATHEREING SAID PLANE OF DIFFERENT COLORED, SPACED APART, ALTERNATING COMBINED MONOFILAMENT GROUPS TO PRODUCE A HOMOGENEOUS MULTICOLORED FILAMENT BUNDLE, AND, E. STRETCHING SAID HOMOGENEOUS FILAMENT BUNDLE.
Claim 2
Dependent Claim 164 words
A PROCESS FOR CONTINUOUSLY PRODUCING A HOMOGENEOUS, MIXED MULTICOLORED YARN WHICH COMPRISES THE SEPARATE STEPS OF: A. MELT SPINNING A COLORED, SYNTHETIC POLYAMIDE OR POLYESTER POLYMER THROUGH SPINNING NOZZLES AND SOLIDIFYING THE RESULTANT POLYMER TO PROVIDE A PLURALITY OF MONOFILAMENT GROUPS, B. MELT SPINNING A SECOND, DIFFERENT COLORED, SYNTHETIC POLYAMIDE OR POLYESTER THROUGH A SECOND DIFFERENT SET OF SPINNING NOZZLES AND SOLIDIFYING THE RESULTANT POLYMER TO PROVIDE A PLURALITY OF MONOFILAMENT GROUPS, C. GUIDING SAID MONOFILAMENT GROUPS OF DIFFERENT COLOR FROM THE DIFFERENT NOZZLES IN SEPARATE, SPACED, DIFFERENT COLORED PLANES UPON EMERGENCE FROM SAID SPINNING NOZZLES, THE FILAMENT GROUPS OF EACH OF SAID DIFFERENT COLORED PLANES BEING SPACED APART AND ALTERNATING WITH EACH OTHER, AND COMBINING THE MONOFILAMENT GROUPS OF EACH COLORED PLANE TO PROVIDE A PLANE OF ALTERNATELY SPACED APART, DIFFERENT COLORED, COMBINED MONOFILAMENT GROUPS D. SUBSQUENTLY GATHEREING SAID PLANE OF DIFFERENT COLORED, SPACED APART, ALTERNATING COMBINED MONOFILAMENT GROUPS TO PRODUCE A HOMOGENEOUS MULTICOLORED FILAMENT BUNDLE, AND, E. STRETCHING SAID HOMOGENEOUS FILAMENT BUNDLE.
Claim 3
Dependent Claim 26 words
A process according to claim 1 wherein each spinning nozzle is positioned on a rectangular nozzle plate and said thread groups have a rectangular cross section.
Claim 4
Dependent Claim 16 words
The process of claim 1 wherein the resultant stretched homogeneous filament bundle is texturized after stretching.
Claim 5
Dependent Claim 31 words
The process of claim 1 wherein the monofilaments from one of said sets of spinning nozzles has a higher thermal shrinkage than the monofilaments from the other set of spinning nozzles.
Claim 6
Dependent Claim 37 words
The process of claim 1 wherein such monofilament groups are guided as substantially horizontal, parallel planes upon emergence from said nozzles and the plane of alternating spaced apart, different colored combined monofilament groups is a vertical plane.
Claim 7
Dependent Claim 31 words
The process of claim 1 wherein the monofilaments from one of said sets of spinning nozzles has a different capillary diameter than the monofilaments from the other set of spinning nozzles.
Claim 8
Dependent Claim 31 words
The process of claim 1 wherein the monofilaments from one of said sets of spinning nozzles has a different capillary profile than the monofilaments from the other set of spinning nozzles.

References Cited (Backward Citations)

US2016391A Cited
US2398729A Cited
US3022132A Cited
US3061998A Cited
US3099064A Cited
US3273328A Cited
US3790655A Cited
US3681910A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1978-08-11 1979-02-10 1979-08-12 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1982-08-11 1983-02-10 1983-08-12 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1986-08-11 1987-02-10 1987-08-12 $7700.00 Window Closed / Lapsed

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