US20160047066A1 - Nylon latent-crimp yarn having outstanding elasticity and cool feel - Google Patents

Nylon latent-crimp yarn having outstanding elasticity and cool feel Download PDF

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Publication number
US20160047066A1
US20160047066A1 US14/776,243 US201414776243A US2016047066A1 US 20160047066 A1 US20160047066 A1 US 20160047066A1 US 201414776243 A US201414776243 A US 201414776243A US 2016047066 A1 US2016047066 A1 US 2016047066A1
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United States
Prior art keywords
nylon
latent
crimp
crimp yarn
yarn
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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.)
Abandoned
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US14/776,243
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English (en)
Inventor
Dong Eun Lee
Dong Hyun NOH
No Woo PARK
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.)
Kolon Fashion Material Inc
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Kolon Fashion Material Inc
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Filing date
Publication date
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Assigned to KOLON FASHION MATERIAL, INC. reassignment KOLON FASHION MATERIAL, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: LEE, DONG EUN, NOH, DONG HYUN, PARK, NO WOO
Publication of US20160047066A1 publication Critical patent/US20160047066A1/en
Abandoned legal-status Critical Current

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    • 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
    • D01F8/12—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyamide as constituent
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/22—Formation of filaments, threads, or the like with a crimped or curled structure; with a special structure to simulate wool
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/28—Formation of filaments, threads, or the like while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor
    • D01D5/30—Conjugate filaments; Spinnerette packs therefor
    • D01D5/32—Side-by-side structure; Spinnerette packs therefor
    • 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
    • D10B2501/00—Wearing apparel
    • D10B2501/04—Outerwear; Protective garments

Definitions

  • the present invention relates to a nylon latent-crimp yarn having outstanding elasticity and cool feeling, and specifically to a nylon latent-crimp yarn having outstanding elasticity and cool feeling, in which (i) a nylon 64 random copolymer and (ii) a nylon 6 polymer or nylon 66 polymer are subjected to conjugate spinning on a yarn cross-section in a side-by-side form, thus to provide excellent dyeing properties, dyeing fastness and elasticity, and exhibit a high official moisture regain and a good cool feeling.
  • Nylon stretchable yarns have a production technique similar to that of polyester-based stretchable yarns.
  • the polyester-based stretchable yarns are widely used mostly for T-shirts, jackets, trousers or the like, and are recently used for composite yarns with other materials.
  • the nylon stretchable yarns are mainly used for outdoor wears, inner wears and socks, there is a difference in terms of use.
  • nylon stretchable yarns As a first conventional technique for manufacturing the nylon stretchable yarns, a method of manufacturing nylon 66 stretchable yarns by drawing and false twisting nylon 66 at a high temperature during a false twisting process has been used.
  • the above-described conventional method is a method in which nylon 66 half-drawn yarns (POY) having a high melting point is false twisted by a low speed at a high temperature using a pin false twisting method or a disk false twisting method, to form crimps on non-aligned yarns by a physical method.
  • the manufactured nylon 66 stretchable yarns have a high crimping rate and exhibits elasticity on the fabric.
  • the nylon 66 is not produced for closing in Korea, and is imported at relatively high prices compared to the nylon 6, due to the use of hexamethylene diamine which is an expensive raw material. Therefore, the manufacturing cost is increased, and due to false twisting by a low speed at a high temperature, productivity is decreased. Further, since a high crimping rate is required at a high temperature, there is a high probability of non-uniformity occurring on the yarns.
  • nylon stretchable yarns As a second conventional technique used to manufacture the nylon stretchable yarns, there is a method in which a nylon 66 polymer and a nylon 6 polymer, which have a 4 to 5% difference in a shrinkage rate in boiling water, are subjected to conjugate spinning on the yarn cross-section in a side-by-side form, to manufacture nylon latent-crimp yarns.
  • the second conventional method has problems that, since a difference in the shrinkage rate in boiling water between the nylon 66 polymer and the nylon 6 polymer is low about 4 to 5%, it is difficult to naturally exhibit the crimps, and an occurrence of the crimps on the fabric is more markedly decreased than the occurrence of the crimps in a yarn state.
  • nylon polymers having different relative viscosities (RV) from each other are subjected to conjugate spinning on the yarn cross-section in a side-by-side form, to manufacture nylon latent-crimp yarns.
  • RV relative viscosities
  • the nylon is spun at a high spinning speed of 3,000 m/min or higher, there are problems that a phenomenon in which yarns are curved below a spinning spinneret due to a difference in the relative viscosity occurs, or it is difficult to produce in a commercial scale by a great decrease in spinning property and yarn productivity due to a decreased spinning speed.
  • a nylon latent-crimp yarn having outstanding elasticity and cool feeling, which is characterized in that a nylon 64 random copolymer (A) and one polymer (B) selected from nylon 6 and nylon 66 are subjected to conjugate spinning on a yarn cross-section in a side-by-side form.
  • the nylon 64 random copolymer (A) includes 10 to 30 mol % of pyrrolidone which is a nylon 4 monomer, and 70 to 90 mol % of caprolactam which is a nylon 6 monomer.
  • the nylon latent-crimp yarn according to the present invention may exhibit a good cool feeling due to excellent dyeing properties, dyeing fastness and elasticity, and have a high official moisture regain.
  • the nylon latent-crimp yarn according to the present invention may have a low manufacturing cost, high productivity, and excellent yarn uniformity.
  • the nylon latent-crimp yarn according to the present invention may be especially useful as a fabric material for outdoor wears used together with stretchable moisture-permeable waterproof polyurethane films.
  • FIGS. 1 and 2 are schematic views illustrating a cross-section of a nylon latent-crimp yarn according to the present invention.
  • FIG. 3 is an electron microscope photograph of the nylon latent-crimp yarn of the present invention before performing a weaving process.
  • FIG. 4 is an electron microscope photograph of the nylon latent-crimp yarn of the present invention after performing the weaving process.
  • a nylon latent-crimp yarn according to the present invention is characterized in that, as illustrated in FIGS. 1 and 2 , a nylon 64 random copolymer (A) and one polymer (B) selected from nylon 6 and nylon 66 are subjected to conjugate spinning on a yarn cross-section in a side-by-side form.
  • FIGS. 1 and 2 are schematic views illustrating a cross-section of the nylon latent-crimp yarn according to the present invention.
  • the nylon 64 random copolymer (A) includes 10 to 30 mol % of pyrrolidone which is a nylon 4 monomer, and 70 to 90 mol % of caprolactam which is a nylon 6 monomer, and has a molecular weight of 70,000 to 120,000 g/mol and a polydispersity index of 1 to 2.
  • the nylon 64 random copolymer (A) is manufactured by performing anion-addition polymerization of caprolactam and 2-pyrrolidone, such that it has a low crystallinity of about 50% or less, a low melting point, and a high moisture regain, and thereby it is difficult to be used as engineering plastic. However, since it has proper strength and elongation, it is suitable to be used for clothing.
  • the nylon 46 polymer is manufactured by polycondensation of 1,4-diaminobutane and adipic acid, such that it has the highest crystallinity among the nylons pressurized at room-temperature, a high melting point, an excellent frictional resistance, a low deformation modulus, and an excellent resistance against oil and grease, and thereby it is mainly used as engineering plastic.
  • the weight ratio of the nylon random copolymer (A) to the one polymer (B) selected from nylon 6 and nylon 66, which are subjected to conjugate spinning on the yarn cross-section in a side-by-side form is 25 to 50:75 to 50.
  • the nylon latent-crimp yarn according to the present invention has a shrinkage rate in boiling water of 30 to 50%, a crimping rate of 20 to 50%, and an official moisture regain of 5 to 8%.
  • the nylon 64 random polymer (A) has a relative viscosity (RV) of 2.4 to 3.0 measured by a sulfuric acid viscosimetric method, a melting point of 150 to 190° C., and a specific gravity of 1.11 to 1.13 g/cm 3 .
  • the one polymer (B) selected form nylon 6 and nylon 66 has a relative viscosity (RV) of 2.4 to 2.7 measured by the sulfuric acid viscosimetric method.
  • the nylon 64 random copolymer (A) is obtained by performing anion or bulk polymerization in a ratio of 70 to 90 mol %:10 to 30 mol % in contents of caprolactam which is a nylon 6 polymer monomer to pyrrolidine which is a nylon 4 polymer monomer.
  • Nylon 4 is a polymer of butyrolactam (also referred to as 2-pyrrolidone or ⁇ -pyrrolidone), and is known to form a polymer as 2-pyrrolidone ring is opened under a specific condition.
  • a high-contraction polymer prepared as described above has a shrinkage rate in boiling water of 30% to 60% when spinning by common yarns, and has a melting point of 150 to 190° C. and a relative viscosity (RV) in a range of 2.4 to 3.0 measured by using the sulfuric acid viscosimetric method. Since such a relative viscosity is similar to that of nylon 6 or nylon 66, it is possible to improve spinnability during manufacturing the latent-crimp yarn, and manufacture the yarns without big remodeling even if using existing conjugate spinning facilities.
  • Pyrrolidone which is a nylon 4 monomer is a biochemical-based raw material, and it may be used as an environmentally friendly material.
  • the number of consumers interested in the environmentally friendly material is rapidly increasing.
  • a material having an image of not destroying the natural environment by using it for clothing it is suitable as textile to be used in the future for which resource deletion is expected.
  • pure nylon 4 has a disadvantage that, ranges of processing temperature and decomposition temperature for processing during molten spinning are very similar to each other due to a high melting point, such that it is not possible to be processed. Further, since the pure nylon 4 has a high moisture regain, it is not suitable as engineering plastic.
  • the nylon 4 when using the nylon 4 for clothing, since it contains a lot of amide group compared to common nylon, it shows strong hydrophilic properties. Therefore, in the present invention, by using the nylon 64 random copolymer obtained by copolymerizing the nylon 4 and nylon 6 in a constant ratio, it is possible to secure the processing temperature due to decreasing the melting point and control the crystallinity, and thereby exhibiting high-contraction performance.
  • side-by-side conjugate spinning is used by using a high-contraction polymer which is a copolymer of nylon 4 and nylon 6
  • moisture content is increased by a high-contraction polymer exposed on the surface. Therefore, touch feeling is improved when clothing contacts the human skin, and pleasantness may be provided to a wearer due to a high moisture content.
  • the cellulose-based textile may exhibit more excellent cool feeling.
  • the nylon 64 random copolymer is stable in terms of spinnability and has a low spinning temperature.
  • it is possible to spin even at a low temperature, and thereby providing an energy saving effect.
  • nylon 64 and nylon 610 in which the nylon 6 and nylon 4 is copolymerized in the same molarity, such a high-contraction characteristic is not exhibited, but the moisture content thereof is decreased.
  • nylon 64 random copolymer the formation of molecular chains in polymer is randomly changed, so as to exhibit high contractibility. Thereby, during side-by-side conjugate spinning, contraction makes progress greatly toward the nylon 4 copolymer, so that it is possible to show an effect like latent crimp. If there is a difference in the shrinkage rate due to processing, a spring-shaped structure is formed by the yarns having a spiral structure, and it is possible to manufacture a stretchable fabric through contraction processing during the processing after weaving the fabric.
  • the half-drawn yarns wound as described above were drawn at a spinning speed of 500 m/min and a drawing ratio of 1.26 by using a drawing winding machine to wind the drawn yarns of 70-denier/24 filament spec to manufacture nylon latent-crimp yarns.
  • Nylon 66 was spun at a spinning speed of 3000 m/min by using a common nylon first heater half-drawn yarn manufacturing facility, to prepare 85-denier/24 filament half-drawn yarns.
  • a spinning speed of 3000 m/min By setting the temperature of the first heater to 220° C. or higher and passing through a pin type false twisting device at a drawing ratio of 1.3 and a spinning speed of 300 m/min, 70-denier/24 filament highly stretchable false-twisted yarns were manufactured.
  • Nylon 6 and nylon 66 were discharged out by using an extruder, respectively, and spun so as to be conjugated in the spinning pack in an area ratio of 50:50.
  • the half-drawn yarns wound as described above were drawn and wound at a spinning speed of 700 m/min and in a drawing ratio of 1.23 using an elongation winding machine to manufacture highly stretchable yarns.
  • test yarns Take out the test yarns, wipe moisture and leave it for 24 hours at a constant temperature and humidity atmosphere
  • Crimp Rate Measuring Method 1 Specimen preparation—After winding 10 times on the hank the specimens to be measured. Insert clips on both sides to prepare specimen. Make 3 specimens per a sample.
  • Qmax value The value of measuring the instantaneous wattage required for correcting temperature when the fabric contacts a unit sensor
  • Test preparation Use a circular knitting machine to knit a test fabric, and refining and dyeing were executed in the same method, modifying width was performed to prepare a test piece.
  • the nylon latent-crimp yarn of the present invention is useful as yarns for clothing, especially for a fabric material for outdoor wears.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Multicomponent Fibers (AREA)
  • Artificial Filaments (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Polyamides (AREA)
US14/776,243 2013-03-14 2014-03-13 Nylon latent-crimp yarn having outstanding elasticity and cool feel Abandoned US20160047066A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
KR10-2013-0027028 2013-03-14
KR1020130027028A KR101537260B1 (ko) 2013-03-14 2013-03-14 신축성 및 냉감이 우수한 나일론 잠재권축사
PCT/KR2014/002093 WO2014142566A1 (ko) 2013-03-14 2014-03-13 신축성 및 냉감이 우수한 나일론 잠재권축사

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US20160047066A1 true US20160047066A1 (en) 2016-02-18

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US14/776,243 Abandoned US20160047066A1 (en) 2013-03-14 2014-03-13 Nylon latent-crimp yarn having outstanding elasticity and cool feel

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US (1) US20160047066A1 (ja)
JP (1) JP6134012B2 (ja)
KR (1) KR101537260B1 (ja)
CN (1) CN105164324B (ja)
WO (1) WO2014142566A1 (ja)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
CN114541004A (zh) * 2022-01-26 2022-05-27 吴江嘉伦织造有限公司 一种抗菌防静电纱线及其制备方法和应用

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KR102100141B1 (ko) * 2018-04-20 2020-04-13 조대현 통기성이 우수한 의료용 압박밴드
CN109355716A (zh) * 2018-12-04 2019-02-19 吴江精美峰实业有限公司 一种尼龙6与尼龙66并列复合弹性纤维的生产装置及其生产方法
WO2024071402A1 (ja) * 2022-09-30 2024-04-04 株式会社クレハ ポリアミド樹脂、ポリアミド樹脂組成物、成形体およびポリアミド樹脂の製造方法

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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Publication number Publication date
WO2014142566A1 (ko) 2014-09-18
KR101537260B1 (ko) 2015-07-16
CN105164324B (zh) 2017-02-22
JP6134012B2 (ja) 2017-05-24
JP2016515171A (ja) 2016-05-26
CN105164324A (zh) 2015-12-16
KR20140112677A (ko) 2014-09-24

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Owner name: KOLON FASHION MATERIAL, INC., KOREA, REPUBLIC OF

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:LEE, DONG EUN;NOH, DONG HYUN;PARK, NO WOO;REEL/FRAME:036699/0741

Effective date: 20150911

STCB Information on status: application discontinuation

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