Back to results
US 12,742,263 B2Granted
Process for utilizing off-color filament yarns
AssigneeDupont Safety & Construction, Inc.
InventorsAline Ferreira Mora, Olivier Beat Noth
Life of this patent
Estimating the term…
Abstract
A process for utilizing wound packages of off-color filament yarn by: a) obtaining a plurality of wound packages of off-color filament yarn: b) classifying the plurality of wound packages, based on a pigment in the filament, into sets of wound packages; c) converting a first set of wound packages into first staple fibers; d) converting a second set of wound packages into second staple fibers; e) mixing the first and second staple fibers of c) and d) to form an intimate blend of off-color staple fibers; wherein the first staple fibers are at least 55 weight percent of the off-color staple fibers in the intimate blend of off-color staple fibers.
Claims15
A process for utilizing wound packages of off-color filament yarn, comprising:
- a) obtaining a plurality of wound packages of off-color filament yarn, wherein the wound packages that contain off-color filament are:
- i) wound packages of filament containing filament having linear lengths with pigment and linear lengths without pigment,
- ii) wound packages of filament containing filament having an amount of pigment outside desired pigment amount limits,
- iii) wound packages of filament containing filament having a linear length of one pigment and another linear length of a differing pigment,
- iv) wound packages of filament containing filament having a mixture of different pigments, and each of those individual pigments are present in varying amounts linearly along the filament, or
- v) any combination of i) to iv) thereof,
- b) classifying the plurality of wound packages, based on a pigment in the filament, into sets of wound packages;
- c) converting a first set of wound packages into first staple fibers;
- d) converting a second set of wound packages into second staple fibers;
- e) mixing the first and second staple fibers of c) and d) to form an off-color intimate blend of staple fibers;
- wherein at least 55 weight percent of the staple fibers in the intimate blend of off-color staple fibers is first staple fibers, based on the total weight of off-color staple fibers in the intimate blend of off-color staple fibers,
- wherein the intimate blend of off-color staple fibers have a dominant color, which is the color of the first staple fibers.
9 more elements
A process for utilizing wound packages of off-color filament yarn, comprising:
- a) obtaining a plurality of wound packages of off-color filament yarn, wherein the wound packages that contain off-color filament are:
- i) wound packages of filament containing filament having linear lengths with pigment and linear lengths without pigment,
- ii) wound packages of filament containing filament having an amount of pigment outside desired pigment amount limits,
- iii) wound packages of filament containing filament having a linear length of one pigment and another linear length of a differing pigment,
- iv) wound packages of filament containing filament having a mixture of different pigments, and each of those individual pigments are present in varying amounts linearly along the filament, or
- v) any combination of i) to iv) thereof;
- b) classifying the plurality of wound packages, based on a pigment in the filament, into sets of wound packages;
- c) converting a first set of wound packages into first staple fibers;
- d) converting a second set of wound packages into second staple fibers;
- e) mixing the first and second staple fibers of c) and d) to form an off-color intimate blend of staple fibers;
- wherein at least 55 weight percent of the staple fibers in the intimate blend of off-color staple fibers is first staple fibers, based on the total weight of off-color staple fibers in the intimate blend of off-color staple fibers,
- wherein the intimate blend of off-color staple fibers is further combined with third staple fibers obtained from a set of wound packages of only on-color filament to make a modified intimate blend of off-color staple fibers,
- wherein the wound packages of on-color filament are wound packages of filament containing only filament that has a desired pigment within desired pigment amount limits, or wound packages of natural filament containing only filament without any pigment.
10 more elements
A process for utilizing wound packages of off-color filament yarn, comprising:
- a) obtaining a plurality of wound packages of off-color filament yarn, wherein the wound packages that contain off-color filament are:
- i) wound packages of filament containing filament having linear lengths with pigment and linear lengths without pigment,
- ii) wound packages of filament containing filament having an amount of pigment outside desired pigment amount limits,
- iii) wound packages of filament containing filament having a linear length of one pigment and another linear length of a differing pigment,
- iv) wound packages of filament containing filament having a mixture of different pigments, and each of those individual pigments are present in varying amounts linearly along the filament, or
- v) any combination of i) to iv) thereof;
- b) classifying the plurality of wound packages, based on a pigment in the filament, into sets of wound packages;
- c) converting a first set of wound packages into first staple fibers;
- d) converting a second set of wound packages into second staple fibers;
- e) mixing the first and second staple fibers of c) and d) to form an off-color intimate blend of staple fibers;
- wherein at least 55 weight percent of the staple fibers in the intimate blend of off-color staple fibers is first staple fibers, based on the total weight of off-color staple fibers in the intimate blend of off-color staple fibers,
- wherein 25 weight percent or more of the staple fibers in the modified intimate blend of off-color staple fibers is obtained from wound packages of off-color filament, based on the total weight of the staple fibers in the modified intimate blend of off-color staple fibers.
9 more elements
Dependencies are inferred from the claim text.