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WO2025226487A1 - Filés de mélange élastiques à finition à basse température comprenant des tissus et des vêtements - Google Patents

Filés de mélange élastiques à finition à basse température comprenant des tissus et des vêtements

Info

Publication number
WO2025226487A1
WO2025226487A1 PCT/US2025/024888 US2025024888W WO2025226487A1 WO 2025226487 A1 WO2025226487 A1 WO 2025226487A1 US 2025024888 W US2025024888 W US 2025024888W WO 2025226487 A1 WO2025226487 A1 WO 2025226487A1
Authority
WO
WIPO (PCT)
Prior art keywords
elastic combination
fiber
combination yarn
elastic
deniers
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/US2025/024888
Other languages
English (en)
Inventor
Qian Zhang
Shuaiquan ZHAO
Xiaolong Lu
Bolin Chen
Keming TANG
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lycra Co LLC
Original Assignee
Lycra Co LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lycra Co LLC filed Critical Lycra Co LLC
Publication of WO2025226487A1 publication Critical patent/WO2025226487A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
    • D02G3/32—Elastic yarns or threads ; Production of plied or cored yarns, one of which is elastic
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
    • D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
    • D01F8/14—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyester as constituent
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2321/00—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D10B2321/02—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
    • D10B2331/04—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyesters, e.g. polyethylene terephthalate [PET]
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
    • D10B2331/04—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyesters, e.g. polyethylene terephthalate [PET]
    • D10B2331/041—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyesters, e.g. polyethylene terephthalate [PET] derived from hydroxy-carboxylic acids, e.g. lactones

Definitions

  • the elastic combination yarn includes a bicomponent polyester fiber; and a hard polyolefin fiber.
  • heat setting is usually used to finish the product for consumer use.
  • a “dyeing” setting process may also be used. Due to the presence of elastic, heat setting must be used to “set” the elastic yarn.
  • the resulting fabric of article may have high shrinkage, excessive fabric weight, and excessive elongation, which may result in a negative experience for the consumer. Excessive shrinkage during the fabric finish process may result in crease marks on the fabric surface during processing and household washing. Creases that develop in this manner are frequently very difficult to remove by ironing.
  • Heat setting temperatures for elastic yarns are generally in the range of 175 °C to 200 °C. Heat setting conditions for conventional spandex are for about 45 seconds or more at about 190 °C. Heat setting at high temperature could damage the elastic yarn structure and kill its elasticity and recovery power, which often causes poor garment shape retention during wearing. Moreover, typical elastic yarn heat-setting temperatures can adversely affect sensitive companion yarns, e.g., wool, cotton, polypropylene and silk. After such heat-set, the non-elastic ⁇ ⁇ ⁇ ⁇ fabrics become harsh and sometimes possess yellowing. For polyester and Nylon fibers, high temperature heat-set could affect the fabric dye ability. The high heat setting process also introduces additional costs into the manufacture of articles containing elastic yarn.
  • non-elastic polyolefin fibers such as polypropylene, ⁇ polyethylene, acrylic, wool and any other fibers which cannot be treated in high temperature, have melting points within the heat setting range of conventional elastic fibers. Therefore, said non-elastic fibers are unusable at high heat setting temperatures.
  • Elastic cross-linked polyolefin fibers have been used in the manufacture of knit articles wherein the articles have not been subjected to a temperature greater than 160 °C. (See U.S. Patent No. 7,943,536). However, the elastic cross-linked polyolefin fibers require catalyzation to retain elasticity as described in U.S. Patent No. 6,437,014.
  • the elastic cross-linked polyolefin fibers require a “radiation crosslinking” step as described in U.S. Patent No. 6,437,014. [0007] Therefore, there is a need in the industry for a reduced temperature finishing yarn, which retains mechanical stability while preserving the non-elastic fiber properties without the use of catalyzed, cross-linked, elastic polyolefin fibers.
  • the present invention solves the problems of the industry by producing a new elastic combination yarn requiring a reduced temperature heat setting step, which may reduce heat damage to certain non-elastic fibers and thus may improve the handle of the finished fabric.
  • One advantageous aspect of the present invention provides an elastic combination yarn including: a bicomponent polyester fiber, the bicomponent comprising glycol terephthalate polyester components having different chain-branched content, and a hard polyolefin fiber, ⁇ ⁇ ⁇ ⁇ ⁇ wherein the elastic combination yarn retains its mechanical stability when finished at a temperature of about 160 C° or less.
  • Another advantageous aspect of the present invention provides a fabric comprising an elastic combination yarn including: a bicomponent polyester fiber, the bicomponent comprising glycol terephthalate polyester components having different chain-branched content, and a hard polyolefin fiber, wherein the elastic combination yarn retains its mechanical stability when finished at a temperature of about 160 C° or less.
  • Yet another advantageous aspect of the present invention provides a process of preparing an elastic combination yarn including: providing a bicomponent polyester fiber, the bicomponent comprising glycol terephthalate polyester components having different chain-branched content, providing a hard polyolefin fiber, and combining the bicomponent polyester fiber and the hard polyolefin fiber to form the elastic combination yarn, wherein the elastic combination yarn retains its mechanical stability when finished at a temperature of about 160 C° or less.
  • FIG. 1 is a double jersey fabric made using 50 denier/34 filaments bicomponent polypropylene on one side of the fabric and the 55 denier/48 filaments T400 bicomponent polyester fiber on both sides of the fabric formed in Construction Type A.
  • FIG. 2 is a double jersey fabric made using 50 denier/34 filaments bicomponent polypropylene on one side of the fabric and the 55 denier/48 filaments T400 bicomponent polyester fiber on both sides of the fabric formed in Construction Type B. ⁇ ⁇ ⁇ ⁇ ⁇ [0014] FIG. 3.
  • FIG. 4. is a double jersey fabric made using 50 denier/34 filaments bicomponent polypropylene on one side of the fabric and the 55 denier/48 filaments T400 bicomponent polyester fiber on both sides of the fabric formed in Construction Type C.
  • FIG. 4. is a double jersey fabric made using 50 denier/34 filaments bicomponent polypropylene on one side of the fabric and the 55 denier/48 filaments T400 bicomponent polyester fiber on both sides of the fabric formed in Construction Type D.
  • Bi-component fiber means a manufactured fiber made from two different polymer components, which may be composed of different polymer types or variants of the same polymer.
  • “Circular knit” means a fabric produced in the form of a tube, the threads running continuously around the fabric.
  • Double knit means a weft-knit fabric produced on a dial-and-cylinder knitting machine, which is equipped with two sets of latch needles situated at right angles to each other.
  • “Fiber” means a unit of matter, either natural or manufactured, that forms the basic element of fabrics and other textile structures. A fiber may be characterized by having a length at least 1000 times its diameter or width.
  • “Filament” means a fiber of indefinite or extreme length.
  • “Flat knit” means a fabric produced in flat form, the threads alternating back and forth across the fabric.
  • “Finish,” “finished,” and “finishing” mean processes that convert the textile into a usable material to improve the look, performance, or “hand” (feel) of the finished textile. Such processes may include, but are not limited to heat setting, dyeing etc.
  • “Hard Polyolefin” means polyolefin fiber which has no significant stretch performance after the heat treating/finishing process, such as, but not limited to, polypropylene fiber; ⁇ ⁇ ⁇ ⁇ ⁇ polyethylene fiber; polylactic acid fiber, any other fibers that cannot be treated at high temperature and combinations thereof.
  • “Hosiery” means a type of knitting in which one continuous yarn runs crosswise on a cylindrical machine and needs to be cut and sewn.
  • “Jersey or jersey knit” means a circular or flat-knit fabric with a plain stitch in which the loops intermesh in only one direction or a tricot fabric made with a simple stitch, characterized by excellent drape and wrinkle recovery properties.
  • “Knit or knit fabric” means a structure produced by interlooping one or more ends of yarn or comparable material.
  • “Milanese knit” means a type of run-resistant warp knitting with a diagonal rib effect using several sets of yarns.
  • Polyethylene or polyester fiber means a manufactured fiber in which the fiber-forming substances is any long-chain synthetic polymer composed of at least 85% by weight of an ester of a substituted aromatic carboxylic acid, including but not limited to substituted terephthalate units and parasubstituted hydroxybenzoate units.
  • “Raschel knit” means a type of warp knitting made in plan and jacquard patterns; the latter can be made with intricate eyelet and lacy patterns.
  • “Seamless” means a type of knitting, which is conducted on a cylindrical machine and needs little or no cutting and sewing process.
  • Single knit means a fabric constructed with one needle bed and one set of needles.
  • Warp knit means a type of knitting in which the yarns generally run lengthwise. The yarns are generally prepared on beams with one or more yarns for each needle. Warp knitting types include tricot, milanese, and raschel. [0033] “Weft knit” means a type of knitting in which one continuous thread runs crosswise in the fabric making all of the loops in one course. Weft knitting types include circular knit and flat knit. ⁇ ⁇ ⁇ ⁇ ⁇ [0034] “Yarn” means continuous strands of textile fibers, filaments, or material in a form suitable for knitting, weaving, or otherwise intertwining to form a textile fabric.
  • the elastic combination yarns of the present invention include bicomponent polyester fibers described in U.S. Patent No. 5,723,215, the subject matter of which is herein incorporated by reference in its entirety.
  • the bicomponent polyester fibers may include glycol terephthalate polyester components having different chain-branched content.
  • the polyester fibers may be of a helical configuration that has resulted from a difference between chain-branched contents of the glycol terephthalate polyester components of said fibers.
  • the bicomponent polyester fibers may include at least one glycol terephthalate polyester component which may be copolymerized with up to 3/4f(f-2) mole % of chain-branching agent, where f is 3 to 6 and is the number of ester-forming functional groups of the chain-branching agent.
  • f is 3.
  • the chain-branched glycol terephthalate polyester component may be copolymerized with at least 0.1 mole % and up to 0.25 mole % of the chain-branching agent.
  • the glycol terephthalate polyester may be selected from polytrimethylene terephthalate (PTT), polyethylene terephthalate (PET), polybutylene terephthalate (PBT), and combinations thereof.
  • the bicomponent chain- branched glycol terephthalate polyester fiber component may be arranged in a configuration selected from helical, side-by-side, sheath core, eccentric, eccentric sheath core, and combinations thereof.
  • Helical means continuously wound fiber components, wherein at least one component may be wound in the clockwise direction, and at least one component may be wound in the counterclockwise direction.
  • side-by-side means that the two components of the bicomponent fiber are immediately adjacent to one another and that no more than a minor portion of either component is within a concave portion of the other component.
  • Eccentric sheath-core means that one of the two components completely surrounds the other component but that the two components are not coaxial.
  • Sheath core means one component forms a core and the other surrounds it as a sheath, and the two components are coaxial.
  • Side-by-side fibers can have a “snowman,” oval, or substantially round cross-sectional shape.
  • Eccentric sheath-core fibers can have an oval or substantially round cross-sectional shape.
  • substantially round it is meant that the ratio of the lengths of two axes crossing each other at 90° in the center of the fiber cross-section is no greater than about 1.2:1.
  • oval it is meant that the ratio of the lengths of two axes crossing each other at 90° in the center of the fiber cross- section is greater than about 1.2:1.
  • a “snowman” cross-sectional shape can be described as a side-by-side cross-section having a long axis, a short axis and at least two maxima in the length of the short axis when plotted against the long axis.
  • the chain-branched glycol terephthalate polyester component may be arranged in a helical configuration.
  • the bicomponent yarn may include but are not limited to polyethylene terephthalate/ polyethylene terephthalate, polyethylene terephthalate/polypropylene terephthalate, polyethylene terephthalate/polybutylene terephthalate, which have different shrinkage properties after heat treatment at a certain temperature, resulting in a crimped state of the yarn and at the same time, a certain elasticity.
  • the bicomponent polyester fiber forms a “spiral crimp” as described in U.S.
  • the bicomponent polyester fiber may be present in an amount of about 1% to about 99% by weight of the elastic combination yarn. ⁇ ⁇ ⁇ ⁇ ⁇ [0048] In yet another advantageous aspect of the present invention, the bicomponent polyester fiber may be present in an amount of about 5% to about 80%; about 10% to about 80%; about 15% to about 80%; about 20% to about 80%; about 25% to about 80%; about 30% to about 80%; about 35% to about 80%; about 40% to about 80%; about 45% to about 80%; about 50% to about 80%; about 55% to about 80%; about 60% to about 80%; about 65% to about 80%; about 70% to about 80%; and about 75% to about 80% percent by weight of the elastic combination yarn.
  • the bicomponent polyester fiber may be present in an amount of about 20% to about 80%; about 25% to about 80%; about 30% to about 80%; about 35% to about 80%; about 40% to about 80%; about 45% to about 80%; about 50% to about 80%; about 55% to about 80%; about 60% to about 80%; about 65% to about 80%; about 70% to about 80%; and about 75% to about 80% percent by weight of the elastic combination yarn.
  • the bicomponent polyester fiber may be present in an amount of about 20% to about 70%; about 25% to about 70%; about 30% to about 70%; about 35% to about 70%; about 40% to about 70%; about 45% to about 70%; about 50% to about 70%; about 55% to about 70%; about 60% to about 70%; and about 65% to about 70% percent by weight of the elastic combination yarn.
  • the bicomponent polyester fiber may be present in an amount of about 20% to about 60%; about 25% to about 60%; about 30% to about 60%; about 35% to about 60%; about 40% to about 60%; about 45% to about 60%; about 50% to about 60%; and about 55% to about 60% percent by weight of the elastic combination yarn.
  • the bicomponent polyester fiber may be present in an amount of about 20% to about 50%; about 25% to about 50%; about 30% to about 50%; about 35% to about 50%; about 40% to about 50%; and about 45% to about 50% percent by weight of the elastic combination yarn.
  • the bicomponent polyester fiber may be present in an amount of about 10% to about 40%; about 15% to about 40%; about 20% ⁇ ⁇ ⁇ ⁇ to about 40%; about 25% to about 40%; about 30% to about 40%; and about 35% to about 40%; percent by weight of the elastic combination yarn.
  • the bicomponent polyester fiber may be present in an amount of about 5% to about 30%; about 10% to about 30%; about 15% to about 30%; about 20% to about 30%; and about 25% to about 30% percent by weight of the elastic combination yarn.
  • Hard Polyolefin Fibers [0055]
  • the elastic combination yarn of the present invention includes hard polyolefin fibers.
  • One advantageous aspect of the present invention includes the hard polyolefin fibers which may be selected from polypropylene fiber; polyethylene fiber; polylactic acid fiber; ⁇ any other fibers that cannot be treated at high temperature and combinations thereof. Fabrics made with polypropylene or polyethylene fibers have good moisture management due to outstanding wicking performance.
  • Examples of useful polyolefin resins are commercially available under the brand name VISTAMAXX by ExxonMobil, such as VISTAMAXX® 1100 and VISTAMAXX® 2100 which may be melted and shaped into a film or prepared as a nonwoven.
  • the hard polyolefin fibers are not crosslinked.
  • the hard polyolefin fibers do not include a catalyzation step.
  • the hard polyolefin fibers do not include a stabilizer.
  • the hard polyolefin fiber may be present in an amount of about 1% to about 99% by weight of the elastic combination yarn.
  • the hard polyolefin fiber may be present in an amount of about 5% to about 70%; about 10% to about 70%; about 15% to about 70%; about 20% to about 70%; about 25% to about 70%; about 30% to about 70%; about 35% to ⁇ ⁇ ⁇ ⁇ about 70%; about 40% to about 70%; about 45% to about 70%; about 50% to about 70%; about 55% to about 70%; about 60% to about 70%; and about 65% to about 70% percent by weight of the elastic combination yarn.
  • the hard polyolefin fiber may be present in an amount of about 5% to about 60%; about 10% to about 60%; about 15% to about 60%; about 20% to about 60%; about 25% to about 60%; about 30% to about 60%; about 35% to about 60%; about 40% to about 60%; about 45% to about 60%; about 50% to about 60%; and about 55% to about 60% percent by weight of the elastic combination yarn.
  • the hard polyolefin fiber may be present in an amount of about 5% to about 50%; about 10% to about 50%; about 15% to about 50%; about 20% to about 50%; about 25% to about 50%; about 30% to about 50%; about 35% to about 50%; about 40% to about 50%; and about 45% to about 50%; percent by weight of the elastic combination yarn.
  • the hard polyolefin fiber may be present in an amount of about 5% to about 40%; about 10% to about 40%; about 15% to about 40%; about 20% to about 40%; about 25% to about 40%; about 30% to about 40%; and about 35% to about 40% percent by weight of the elastic combination yarn.
  • the hard polyolefin fiber may be present in an amount of about 5% to about 30%; about 10% to about 30%; about 15% to about 30%; about 20% to about 30%; and about 25% to about 30% percent by weight of the elastic combination yarn.
  • the hard polyolefin fiber may be present in an amount of about 5% to about 20%; about 10% to about 20%; and about 15% to about 20% percent by weight of the elastic combination yarn.
  • the hard polyolefin fibers have a fineness of about 5 to about 300 deniers; about 20 to about 300 deniers; about 30 to about 300 deniers; about 40 to about 300 deniers; about 50 to about 300 deniers; about 60 to about 300 deniers; about 70 to about 300 deniers; about 80 to about 300 deniers; about 90 to about 300 deniers; about 100 to about 300 deniers; about 110 to about 300 deniers; about 120 to about 300 ⁇ ⁇ ⁇ ⁇ deniers; about 130 to about 300 deniers; about 140 to about 300 deniers; about 150 to about 300 deniers; about 160 to about 300 deniers; about 170 to about 300 deniers; about 180 to about 300 deniers; about 190 to about 300 deniers; about 200 to about 300 deniers; about 210 to about 300 deniers; about 220 to about 300 deniers; about 230 to about 300 deniers; about 240 to about 300 deniers; about 250 to about 300 deniers; about 260 to about 300 deniers;
  • the hard polyolefin fibers have a fineness of about 10 to about 250 deniers; about 20 to about 250 deniers; about 30 to about 250 deniers; about 40 to about 250 deniers; about 50 to about 250 deniers; about 60 to about 250 deniers; about 70 to about 250 deniers; about 80 to about 250 deniers; about 90 to about 250 deniers; about 100 to about 250 deniers; about 110 to about 250 deniers; about 120 to about 250 deniers; about 130 to about 250 deniers; about 140 to about 250 deniers; about 150 to about 250 deniers; about 160 to about 250 deniers; about 170 to about 250 deniers; about 180 to about 250 deniers; about 190 to about 250 deniers; about 200 to about 250 deniers; about 210 to about 250 deniers; about 220 to about 250 deniers; about 230 to about 250 deniers; or about 240 to about 250 deniers.
  • the hard polyolefin fibers have a fineness of about 10 to about 200 deniers; about 20 to about 200 deniers; about 30 to about 200 deniers; about 40 to about 200 deniers; about 50 to about 200 deniers; about 60 to about 200 deniers; about 70 to about 200 deniers; about 80 to about 200 deniers; about 90 to about 200 deniers; about 100 to about 200 deniers; about 110 to about 200 deniers; about 120 to about 200 deniers; about 130 to about 200 deniers; about 140 to about 200 deniers; about 150 to about 200 deniers; about 160 to about 200 deniers; about 170 to about 200 deniers; about 180 to about 200 deniers; or about 190 to about 200 deniers.
  • the hard polyolefin fibers have a fineness of about 10 to about 150 deniers; about 20 to about 150 deniers; about 30 to about 150 deniers; about 40 to about 150 deniers; about 50 to about 150 deniers; about 60 to about 150 deniers; about 70 to about 150 deniers; about 80 to about 150 deniers; about 90 to about 150 deniers; about 100 to about 150 deniers; about 110 to about 150 deniers; about 120 to about 150 deniers; about 130 to about 150 deniers; or about 140 to about 150 deniers.
  • the hard polyolefin fibers have a fineness of about 10 to about 100 deniers; about 20 to about 100 deniers; about 30 to about 100 deniers; about 40 to about 100 deniers; about 50 to about 100 deniers; about 60 to about 100 deniers; about 70 to about 100 deniers; about 80 to about 100 deniers; or about 90 to about 100 deniers.
  • the hard polyolefin fibers have a fineness of about 10 to about 80 deniers; about 20 to about 80 deniers; about 30 to about 80 deniers; about 40 to about 80 deniers; about 50 to about 80 deniers; about 60 to about 80 deniers; or about 70 to about 80 deniers.
  • the hard polyolefin fibers have a fineness of about 10 to about 60 deniers; about 20 to about 60 deniers; about 30 to about 60 deniers; about 40 to about 60 deniers; or about 50 to about 60 deniers.
  • the hard polyolefin fibers have a fineness of about 10 to about 40 deniers; about 20 to about 40 deniers; or about 30 to about 40 deniers.
  • the hard polyolefin fibers have a fineness of about 10 to about 30 deniers; or about 20 to about 30 deniers.
  • the elastic combination yarns are capable of being finished at a temperature of about 160 °C or less; about 150 °C or less; about 140 °C or less; about 130 °C or less; about 120 °C or less; about 110 °C or less; about 100 °C or less; about 90 °C or less; about 80 °C or less; and about 70 °C or less.
  • the elastic combination yarns are capable of being finished at a temperature of about 160 °C to about 80 °C; about 150 °C to about 80 °C; about 140 °C to about 80 °C; about 130 °C to about 80 °C; about 120 °C to about 80 °C; about 110 °C to about 80 °C; about 100 °C to about 80 °C; and about 90 °C to about 80 °C.
  • the elastic combination yarns are capable of being finished at a temperature of about 160 °C to about 70 °C; about 150 °C to about ⁇ ⁇ ⁇ ⁇ 70 °C; about 140 °C to about 70 °C; about 130 °C to about 70 °C; about 120 °C to about 70 °C; about 110 °C to about 70 °C; about 100 °C to about 70 °C; about 90 °C to about 70 °C; and about 80 °C to about 70 °C.
  • the elastic combination yarns are capable of being finished at a temperature of about 160 °C to about 80 °C.
  • the elastic combination yarns are capable of being finished at a temperature of about 160 °C or less. [0082] In another advantageous aspect of the present invention, the elastic combination yarns are capable of being finished at a temperature of about 150 °C or less. [0083] In a further advantageous aspect of the present invention, the elastic combination yarns are capable of being finished at a temperature of about 140 °C or less. [0084] In yet a further advantageous aspect of the present invention, the elastic combination yarns are capable of being finished at a temperature of about 130 °C or less. [0085] In yet a further advantageous aspect of the present invention, the elastic combination yarns are capable of being finished at a temperature of about 120 °C or less.
  • the elastic combination yarns are capable of being finished at a temperature of about 110 °C or less.
  • the elastic combination yarns are capable of being finished at a temperature of about 100 °C or less.
  • the elastic combination yarns are capable of being finished at a temperature of about 90 °C or less.
  • the elastic combination yarns are capable of being finished at a temperature of about 80 °C or less.
  • the elastic combination yarns are capable of being finished at a temperature of about 70 °C or less.
  • the elastic combination yarns are desirably finished at a temperature of about 130 °C or less.
  • the elastic combination yarns exhibit excellent one-way moisture performance, wherein the yarn is able to quickly move any moisture from one side of the respective layer to the other where it evaporates quickly leaving the yarn dry.
  • the elastic combination yarns subsequent to finishing, have a breaking elongation of about 5 % to over 200 %.
  • the elastic combination yarns subsequent to finishing, have a breaking elongation of about 25 % to about 200 %. [0095] In another advantageous aspect of the present invention, subsequent to finishing, the elastic combination yarns have a breaking elongation of about 50 % to about 200 %. [0096] In yet another advantageous aspect of the present invention, subsequent to finishing, the elastic combination yarns have a breaking elongation of about 75 % to about 200 %. [0097] In one advantageous aspect of the present invention, subsequent to finishing, the elastic combination yarns have a breaking elongation of about 100 % to about 200 %.
  • the elastic combination yarns subsequent to finishing, have a recovery force percentage of about 30 % to about 100 %. [0099] In yet a further advantageous aspect of the present invention, subsequent to finishing, the elastic combination yarns have a recovery force percentage of about 40 % to about 100 %. [0100] In one advantageous aspect of the present invention, subsequent to finishing, the elastic combination yarns have a recovery force percentage of about 60 % to about 100 %. [0101] In another advantageous aspect of the present invention, subsequent to finishing, the elastic combination yarns have a recovery force percentage of about 80 % to about 100 %.
  • the elastic combination yarns subsequent to finishing, have a shrinkage of about 10 % to about 40 %.
  • the fabric is treated/finished in a process which generally begins with a greige fabric, followed by a washing step, followed by a heat setting step, followed by a dyeing step, and followed by a finishing step.
  • shrinkage refers to the amount of shrinkage (size change) from the fabric width from the start to the end of the treating/finishing process.
  • the elastic combination yarns subsequent to finishing, have an evaporation rate of about 0.1 gram per hour to about 1 gram per hour.
  • the elastic combination yarns subsequent to finishing, have an evaporation rate of about 0.2 gram per hour to about 1 gram per hour. [0105] In one advantageous aspect of the present invention, subsequent to finishing, the elastic combination yarns have an evaporation rate of about 0.3 gram per hour to about 1 gram per hour. [0106] In one advantageous aspect of the present invention, subsequent to finishing, the elastic combination yarns have an evaporation rate of about 0.4 gram per hour to about 1 gram per hour. [0107] In one advantageous aspect of the present invention, subsequent to finishing, the elastic combination yarns have an absorbency of less 1 second to about 10 seconds.
  • the elastic combination yarns subsequent to finishing, have a vertical wicking of about 2 inches to over 6 inches. [0109] In one advantageous aspect of the present invention, subsequent to finishing, the elastic combination yarns have a planar wicking of about 2 inches to about 6 inches. [0110] In another advantageous aspect of the present invention, subsequent to finishing, the elastic combination yarns have an air permeability of about 20 cfm to over 350 cfm. [0111] In yet another advantageous aspect of the present invention, subsequent to finishing, the elastic combination yarns have an air permeability of about 100 cfm to about 350 cfm.
  • the elastic combination yarns subsequent to finishing, have an air permeability of about 150 cfm to about 350 cfm. [0113] In one advantageous aspect of the present invention, subsequent to finishing, the elastic combination yarns have an air permeability of about 200 cfm to about 350 cfm.
  • the elastic combination yarns may be formed according to a technique including, but not limited to, single wrapping of the bicomponent polyester fiber with the hard polyolefin fiber; double wrapping of the bicomponent polyester fiber with the hard polyolefin fiber; continuously covering the bicomponent polyester fiber with the hard polyolefin fiber, followed by twisting during winding; intermingling and entangling the bicomponent polyester fiber with the hard polyolefin fiber with an air jet; twisting the bicomponent polyester fiber and the hard polyolefin fiber together; blending the bicomponent polyester fiber and hard polyolefin fiber together and combinations thereof.
  • the elastic combination yarns may be used to form a fabric including, but not limited to, weft knit, warp knit, jersey knit, single knit, double knit, single jersey knit, and combinations thereof.
  • the elastic combination yarns may be combined with further fibers may include, but not limited to, polyester, wool, cotton, hemp, silk, lyocell, spandex, nylon, polylactic acid, chlorine fibers.
  • an article of manufacture may be made from the elastic combination yarn of the present invention. The article of manufacture may be selected from any number of articles where reduced temperature finishing is useful and/or where retaining the mechanical properties described herein, subsequent to finishing, is useful.
  • the elastic combination yarns of the present invention may be used in the manufacture of garments and fabrics, and combinations thereof.
  • the article of manufacture may be made from the elastic combination yarn of the present invention may include, but is not limited to, fibers or yarns or fabrics or clothing, and denim fabrics and clothing made therefrom, wearable clothing, hosiery, leggings, sportswear, underwear, bras, and disposable sanitary articles, including (but not limited to) disposable diapers, training pants, adult incontinence devices and products, menstrual devices, clothing and products, bandages; wound dressings, surgical drapes, surgical gowns, surgical or other sanitary protection covers, sanitary gloves, head coverings, headbands, ostomy bags, mattresses, bed sheets and the like; knitted gloves; ⁇ ⁇ ⁇ ⁇ upholstery; hair accessories; carpet and carpet backing; conveyor belts; and footwear; undergarments, brassieres, bralettes, panties, lingerie, swimwear, shapers, camisole
  • An elastic combination yarn comprising: a bicomponent polyester fiber, the bicomponent comprising glycol terephthalate polyester components having different chain-branched content, and a hard polyolefin fiber, wherein the elastic combination yarn retains its mechanical stability when finished at a temperature of about 160 C° or less.
  • a bicomponent polyester fiber comprising glycol terephthalate polyester components having different chain-branched content
  • a hard polyolefin fiber wherein the elastic combination yarn retains its mechanical stability when finished at a temperature of about 160 C° or less.
  • the elastic combination yarn retains its mechanical stability when finished at a temperature of about 160 C° or less.
  • the elastic combination yarn of clause 1 wherein at least one glycol terephthalate polyester component is copolymerized with up to 3/4f(f-2) mole % of chain-branching agent, where f is 3 to 6 and is the number of ester-forming functional groups of the chain-branching agent.
  • f is 3
  • a process of preparing an elastic combination yarn comprising: providing a bicomponent polyester fiber, the bicomponent comprising glycol terephthalate polyester components having different chain-branched content, providing a hard polyolefin fiber, and combining the bicomponent polyester fiber and the hard polyolefin fiber to form the elastic combination yarn, wherein the elastic combination yarn retains its mechanical stability when finished at a temperature of about 160 C° or less.
  • EXAMPLES Fabric Design [0119] Four fabrics were designed and knitted on a circular knitting machine with two needle beds. The knitting machine that could be used, include but is not limited to knitting machines described herein. Examples A-D and Comparative examples E-G are double jersey fabrics, which refers to fabrics having jersey construction on both sides of the fabric. The composition of Examples A-G is described in Table 1. Table 1 Composition of Fabrics A-G A B C D E F G EXAMPLE A Inventive [0120] A double jersey fabric was made using 50 denier/34 filaments bicomponent polyester yarn on both dial and cylinder needles to knit both layers of the fabric and the 55 denier/48 filaments hard yarn on only cylinder needles to knit the layer. The fabric construction is depicted in Figure 1.
  • EXAMPLE D Inventive [0123] A double jersey fabric was made using 50 denier/34 filaments bicomponent polyester yarn on both dial and cylinder needles to knit both layers of the fabric and the 55 denier/48 filaments hard yarn on only cylinder needles to knit the layer. The fabric construction is depicted in Figure 4.
  • each of Examples A-D have good evaporation performance as shown Table 2.
  • Comparative fabrics E-G were knitted on the same machine with same construction type as Inventive fabric A. From the results, we see that the Inventive fabric A, which was made with combination of bicomponent fiber and hard polyolefin fibers, has outstanding performance such as absorbency, vertical wicking, planar wicking and so on. Further, Inventive fabric A has a significantly better evaporation performance than Comparative Fabrics E-G.
  • Examples A-D have outstanding stretch performance, which may be due to the crimp of the bicomponent polyester fiber after the heat setting process. Even further, the fabric weight is lower than those made with common yarn combination in the industry. The use of lower fabric weight may provide the end user with more freedom and comfort during movement. ⁇ ⁇

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Artificial Filaments (AREA)

Abstract

La présente invention concerne des filés de mélange élastiques, leur procédé de préparation et leur utilisation, en particulier dans des applications nécessitant une rétention de stabilité mécanique suite à une finition à des températures inférieures ou égales à environ 160 °C. Le filé de mélange élastique comprend une fibre de polyester bicomposant ; et une fibre de polyoléfine dure.
PCT/US2025/024888 2024-04-24 2025-04-16 Filés de mélange élastiques à finition à basse température comprenant des tissus et des vêtements Pending WO2025226487A1 (fr)

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US202463638226P 2024-04-24 2024-04-24
US63/638,226 2024-04-24
US202463740616P 2024-12-31 2024-12-31
US63/740,616 2024-12-31

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB216551A (en) 1923-01-29 1924-05-29 John Brandwood Improvements in and relating to apparatus for the continuous feed of textile materials to treatment apparatus
US5723215A (en) 1994-09-30 1998-03-03 E. I. Du Pont De Nemours And Company Bicomponent polyester fibers
US6437014B1 (en) 2000-05-11 2002-08-20 The Dow Chemical Company Method of making elastic articles having improved heat-resistance
JP2003073939A (ja) * 2001-08-30 2003-03-12 Du Pont Toray Co Ltd 合撚糸およびその製造方法
JP2003073950A (ja) * 2001-08-30 2003-03-12 Du Pont Toray Co Ltd 被覆糸およびその製造方法
US7943536B2 (en) 2004-08-13 2011-05-17 Dow Global Technologies Llc Stretch fabrics with improved heat-setting properties
WO2015152998A1 (fr) * 2014-02-12 2015-10-08 E. I. Du Pont De Nemours And Company Tissu georgette à deux composants et son procédé de fabrication

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB216551A (en) 1923-01-29 1924-05-29 John Brandwood Improvements in and relating to apparatus for the continuous feed of textile materials to treatment apparatus
US5723215A (en) 1994-09-30 1998-03-03 E. I. Du Pont De Nemours And Company Bicomponent polyester fibers
US6437014B1 (en) 2000-05-11 2002-08-20 The Dow Chemical Company Method of making elastic articles having improved heat-resistance
JP2003073939A (ja) * 2001-08-30 2003-03-12 Du Pont Toray Co Ltd 合撚糸およびその製造方法
JP2003073950A (ja) * 2001-08-30 2003-03-12 Du Pont Toray Co Ltd 被覆糸およびその製造方法
US7943536B2 (en) 2004-08-13 2011-05-17 Dow Global Technologies Llc Stretch fabrics with improved heat-setting properties
WO2015152998A1 (fr) * 2014-02-12 2015-10-08 E. I. Du Pont De Nemours And Company Tissu georgette à deux composants et son procédé de fabrication

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