US20240373964A1 - Artificial hair and method for manufacturing artificial hair - Google Patents

Artificial hair and method for manufacturing artificial hair Download PDF

Info

Publication number
US20240373964A1
US20240373964A1 US18/777,971 US202418777971A US2024373964A1 US 20240373964 A1 US20240373964 A1 US 20240373964A1 US 202418777971 A US202418777971 A US 202418777971A US 2024373964 A1 US2024373964 A1 US 2024373964A1
Authority
US
United States
Prior art keywords
crimp
fiber
less
artificial hair
parts
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
US18/777,971
Other languages
English (en)
Inventor
Aki Kano
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.)
Kaneka Corp
Original Assignee
Kaneka Corp
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 Kaneka Corp filed Critical Kaneka Corp
Assigned to KANEKA CORPORATION reassignment KANEKA CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KANO, AKI
Publication of US20240373964A1 publication Critical patent/US20240373964A1/en
Pending legal-status Critical Current

Links

Images

Classifications

    • 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
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/28—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D01F6/40—Modacrylic fibres, i.e. containing 35 to 85% acrylonitrile
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41G—ARTIFICIAL FLOWERS; WIGS; MASKS; FEATHERS
    • A41G3/00—Wigs
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41G—ARTIFICIAL FLOWERS; WIGS; MASKS; FEATHERS
    • A41G3/00—Wigs
    • A41G3/0083—Wigs characterised by their hair filaments
    • 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
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • 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
    • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
    • 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
    • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
    • D02G1/14—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using grooved rollers or gear-wheel-type members
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
    • D02J1/00—Modifying the structure or properties resulting from a particular structure; Modifying, retaining, or restoring the physical form or cross-sectional shape, e.g. by use of dies or squeeze rollers
    • 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
    • D10B2321/10—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polymers of unsaturated nitriles, e.g. polyacrylonitrile, polyvinylidene cyanide
    • D10B2321/101—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polymers of unsaturated nitriles, e.g. polyacrylonitrile, polyvinylidene cyanide modacrylic

Definitions

  • the present invention relates to artificial hair and a method for manufacturing artificial hair.
  • a fiber bundle for artificial hair resembling human hair has been used as a material of a head decoration product such as a hairpiece, a wig, an extension, a braid, or a hair band (for example, Patent Document 1).
  • a resin fiber is crimped by gear crimp to give volume to a hair top and to imitate human hair.
  • an object of the present invention is to provide artificial hair and a method for manufacturing artificial hair, which are capable of achieving both a good volume when braided and good braid stop of a hair tip as compared with the conventional case.
  • One aspect of the present invention for solving the above problems is artificial hair including a fiber bundle including a large crimp part having a minimum pitch of 1 mm or more and 7 mm or less, wherein the large crimp part includes a small crimp part having a pitch smaller than that of the large crimp part near one peak part.
  • pitch refers to a distance between adjacent peak parts or a distance between adjacent valley parts. The same applies hereinafter.
  • near refers to a range within 1 ⁇ 4 of the minimum pitch of the large crimp part.
  • the small crimp part is provided near the peak part of the large crimp part, and thus the small crimp parts are easily entangled with each other, a volume when braided is easily maintained, and the braid stop of a hair tip is good.
  • One aspect of the present invention is artificial hair including a fiber bundle including a large crimp part having alternatively formed first peak parts and first valley parts with a minimum pitch of 1 mm or more, wherein a minimum amplitude of the large crimp part is 0.30 mm or more and 4 mm or less, wherein the large crimp part includes a small crimp part having a pitch smaller than that of the large crimp part near one peak part, wherein the small crimp part has alternatively formed second peak parts and second valley parts, wherein a minimum amplitude of the small crimp part is smaller than the minimum amplitude of the large crimp part.
  • the small crimp part has a minimum pitch of 1.0 mm or more and 3.5 mm or less.
  • the small crimp part has a minimum amplitude of more than 0 mm and 2 mm or less.
  • the large crimp part has a minimum pitch of 3 mm or less.
  • the fiber bundle has a flexion degree of 1.2 or more and 1.3 or less.
  • the “flexion degree” as used herein refers to the ratio of the total length of a fiber based on crimp to the length of the fiber in an extending direction as a whole, ignoring crimp. That is, the “flexion degree” refers to the ratio of a natural length to a maximum length when the fiber is extended.
  • the fiber bundle has an average flyaway hair rate of 23% or less at a portion of 10 cm from a hair tip when formed into a braid.
  • farnesy hair refers to a state where a short fiber springs out from the surface of the fiber bundle as illustrated in FIG. 5 .
  • the “flyaway hair rate” is an index indicating how much the flyaway hair of the fiber bundle is present when formed into the braid, and refers to the ratio of the flyaway hair to the whole when the fiber bundle is classified into a bulk in which the ratio of transmitted light when irradiated with light is less than 50% and flyaway hair in which the ratio of transmitted light when irradiated with light is 50% or more.
  • the fiber bundle is composed of at least one raw material fiber selected from the group consisting of an acrylic fiber, a polyvinyl chloride fiber, a polypropylene fiber, and a polyethylene terephthalate fiber.
  • the fiber bundle consists only of the one raw material fiber.
  • the fiber bundle is composed of a modacrylic fiber.
  • a bulk of the fiber bundle is 180% or more and 520% or less with respect to a bulk of the raw material fiber bundle of the same weight.
  • One aspect of the present invention is a method for manufacturing artificial hair including: a small crimp applying step of applying a small crimp part with a small crimp applying part obtained by heating a raw material fiber to form an in-progress fiber; and a large crimp applying step of applying a large crimp part to the in-progress fiber with a heated large crimp applying part, wherein in the large crimp applying step, heating is performed at a temperature lower than that in the small crimp applying step.
  • the small crimp applying step is performed before the large crimp applying step.
  • One aspect of the present invention is a method for manufacturing artificial hair including: a small crimp applying step of applying a small crimp part having alternatively formed second peak parts and second valley parts with a small crimp applying part obtained by heating a raw material fiber to form an in-progress fiber; and a large crimp applying step of applying a large crimp part having alternatively formed first peak parts and first valley parts to the in-progress fiber with a heated large crimp applying part, wherein the small crimp applying part and the large crimp applying part are both gear crimps, wherein the small crimp applying part includes a pair of first gear parts engaged with each other, wherein the large crimp applying part includes a pair of second gear parts engaged with each other, wherein a total tooth length of the second gear parts in the large crimp applying part is 1 mm or more and larger than a total tooth length of the first gear parts, wherein the small crimp applying step is performed before the large crimp applying step, and wherein in the large cri
  • a difference between the total tooth length of the first gear parts of the small crimp applying part and the total tooth length of the second gear parts of the large crimp applying part is 1 mm or more and 4 mm or less.
  • a pitch of the first gear parts of the small crimp applying part is 1 mm or more and 4.0 mm or less.
  • the total tooth length of the first gear parts of the small crimp applying part is 4.0 mm or less.
  • the small crimp applying part and the large crimp applying part are both gear crimps, and a difference in total tooth length is 1 mm or more.
  • total tooth length refers to a distance from a tooth bottom to a tooth tip.
  • the small crimp applying part and the large crimp applying part are both gear crimps
  • the total tooth length of the gear of the large crimp applying part is 3.0 mm or less
  • a difference in the total tooth length between the gears of the small crimp applying part and the large crimp applying part is less than 3.0 mm.
  • a ratio of a volume when the fiber after the large crimp applying step, which has the same weight as a predetermined weight of the raw material fiber, is braided to a volume when the raw material fiber having the predetermined weight is braided is 115% or more.
  • the present invention can achieve both a good volume when braided and good braid stop of a hair tip as compared with the conventional case.
  • FIGS. 1 A to 1 C are explanatory views of artificial hair according to a first embodiment of the present invention, wherein FIG. 1 A is a perspective view schematically showing artificial hair,
  • FIG. 1 B is a side view of a region A in FIG. 1 A
  • FIG. 1 C is a side view of a region B in FIG. 1 B .
  • FIG. 2 is a side view schematically showing a manufacturing machine suitable for manufacturing the artificial hair of FIG. 1 .
  • FIGS. 3 A and 3 B are explanatory views when a volume increase rate (bulk) and a flexion degree are measured, wherein FIG. 3 A is a perspective view showing a state where a fiber is placed on a horizontal plane, and FIG. 3 B is a cross-sectional view of FIG. 3 A .
  • FIGS. 4 A and 4 B are explanatory views when measuring a volume increase rate (braid), wherein FIG. 4 A is a perspective view of a fiber bundle, and FIG. 4 B is a cross-sectional view in a plane M of FIG. 4 A .
  • FIG. 5 is an explanatory view of a flyaway hair ratio.
  • Artificial hair 1 is artificial hair for braid, and is suitably used mainly for braiding.
  • the artificial hair 1 includes a fiber bundle 2 in which a plurality of fibers 5 are bundled.
  • the fiber bundle 2 extends in a predetermined bundle shape, and includes a large crimp part 10 having an amplitude in a direction intersecting a longitudinal direction and extending in a wave shape in the longitudinal direction.
  • a first peak part 15 and a first valley part 16 are regularly and repeatedly formed as shown in FIG. 1 B .
  • the minimum pitch of the large crimp part 10 (a distance D 1 between the adjacent first peak parts 15 and 15 or a distance D 2 between the adjacent first valley parts 16 and 16 ) is preferably 3 mm or more, more preferably 3.5 mm or more. And the minimum pitch of the large crimp part 10 may be 1 mm or more, or may be or may be 1.75 mm or more.
  • the minimum pitch of the large crimp part 10 is preferably 13.5 mm or less, and more preferably 11 mm or less.
  • the minimum pitch of the large crimp part 10 may be 7 mm or less, or may be 3.5 mm or less, or may be 3 mm or less, or may be 2.5 mm or less.
  • the minimum amplitude of the large crimp part 10 (a length L 1 from the bottom of the first valley part 16 to the vertex of the first peak part 15 ) is preferably 0.8 mm or more, and more preferably 1.2 mm or more.
  • the minimum amplitude of the large crimp part 10 may be 0.30 mm or more, or may be 0.38 mm or more.
  • the minimum amplitude of the large crimp part 10 (a length L 1 from the bottom of the first valley part 16 to the vertex of the first peak part 15 ) is preferably less than 7 mm, more preferably 6 mm or less, still more preferably 5 mm or less.
  • the minimum amplitude of the large crimp part 10 may be 4 mm or less, or may be 2 mm or less, or may be 1.40 mm or less, or may be 0.49 mm or less.
  • the large crimp part 10 includes a small crimp part 11 over the entire longitudinal direction.
  • the small crimp part 11 is a crimp provided over the entire large crimp part 10 , and as shown in FIG. 1 C , is a crimp having a smaller amplitude and period than those of the large crimp part 10 .
  • a second peak part 17 and a second valley part 18 are repeatedly formed substantially regularly.
  • the minimum pitch of the small crimp part 11 (a distance D 3 between the adjacent second peak parts 17 and 17 or a distance D 4 between the adjacent second valley parts 18 and 18 ) is preferably smaller than the minimum pitch of the large crimp part 10 .
  • the minimum pitch of the small crimp part 11 (a distance D 3 between the adjacent second peak parts 17 and 17 or a distance D 4 between the adjacent second valley parts 18 and 18 ) is preferably 1.0 mm or more, more preferably 1.5 mm or more.
  • the minimum pitch of the small crimp part 11 is preferably 7 mm or less, more preferably 3.5 mm or less, still more preferably 3 mm or less, and particularly preferably 2.5 mm or less.
  • the minimum amplitude of the small crimp part 11 (a length L 2 from the bottom of the second valley part 18 to the vertex of the second peak part 17 ) is preferably smaller than the minimum amplitude of the large crimp part 10 .
  • the minimum amplitude of the small crimp part 11 (a length L 2 from the bottom of the second valley part 18 to the vertex of the second peak part 17 ) is preferably more than 0 mm, preferably 0.30 mm or more, and more preferably 0.38 mm or more.
  • the minimum amplitude of the small crimp part 11 is preferably 0.6 mm or more, and more preferably 0.7 mm or more.
  • the minimum amplitude of the small crimp part 11 is preferably less than 7 mm, more preferably 4 mm or less, still more preferably 3 mm or less.
  • the minimum amplitude of the small crimp part 11 may be 2 mm or less, or may be 1.40 mm or less, or may be 0.49 mm or less.
  • the fiber 5 is preferably composed of at least one raw material fiber selected from the group consisting of an acrylic fiber, a polyvinyl chloride fiber, a polypropylene fiber, and a polyethylene terephthalate fiber, and more preferably composed of a modacrylic fiber.
  • the cross-sectional shape of the fiber 5 is not particularly limited, and may be, for example, a circular shape, a Y shape, an H shape, a U shape, a C shape, an X shape, or a flat shape or the like.
  • the manufacturing machine 30 is a crimp forming device that forms the crimp parts 10 and 11 in the raw material fiber to form the fiber bundle 2 , and includes a small crimp applying part 31 , a large crimp applying part 32 , and a conveyance roller part 33 as shown in FIG. 2 .
  • the small crimp applying part 31 is a gear crimp, and includes a pair of first gear parts 35 a and 35 b engaged with each other.
  • the first gear parts 35 a and 35 b preferably have a pitch S 1 of 1.0 mm or more, and more preferably 2 mm or more.
  • the first gear parts 35 a and 35 b preferably have a pitch S 1 of 8 mm or less, and more preferably 5 mm or less, and still more preferably 4.0 mm or less.
  • a total tooth length T 1 is preferably more than 0 mm, and more preferably 1.0 mm or more.
  • the total tooth length T 1 is preferably less than 7 mm, more preferably 6 mm or less, still preferably 4.0 mm or less, still more preferably less than 3.0 mm, and particularly preferably 2 mm or less.
  • the large crimp applying part 32 is a gear crimp, and includes a pair of second gear parts 36 a and 36 b engaged with each other.
  • the second gear parts 36 a and 36 b are gears whose total tooth length T 2 is larger than the total tooth length T 1 of the first gear parts 35 a and 35 b.
  • a pitch S 2 is preferably 1 mm or more, more preferably 1.5 mm or more, and still more preferably 1.75 mm or more, and still more preferably 2.0 mm or more.
  • the pitch S 2 is preferably 10 mm or less, and more preferably 8 mm or less, and still more preferably 7.0 mm or less, and still more preferably 3 mm or less. In the second gear parts 36 a and 36 b , the pitch S 2 may be 2.5 mm or less.
  • a total tooth length T 2 is preferably 1 mm or more and 7 mm or less, and more preferably 6 mm or less, and still more preferably 5 mm or less, and still more preferably 4 mm or less.
  • the difference between the total tooth length T 2 of the second gear parts 36 a and 36 b and the total tooth length T 1 of the first gear parts 35 a and 35 b is preferably 1 mm or more and 4 mm or less, more preferably 2.5 mm or less, and still more preferably 1.5 mm or less.
  • the conveyance roller part 33 is a section for conveying the raw material fiber between the large crimp applying part 32 and the small crimp applying part 31 at a predetermined speed.
  • a bundle of raw material fibers (hereinafter, also referred to as a raw material fiber bundle) is passed through the heated small crimp applying part 31 by the conveyance roller part 33 to apply the small crimp part 11 , thereby forming an in-progress fiber bundle (small crimp applying step).
  • a heating temperature (the temperature of the first gear parts 35 a , 35 b ) in the small crimp applying part 31 is preferably 95° C. or higher and 100° C. or lower.
  • a passage speed in the small crimp applying part 31 is preferably 0.5 m/min. or more and 8.0 m/min. or less.
  • the in-progress fiber bundle is passed through the heated large crimp applying part 32 by the conveyance roller part 33 to apply the large crimp part 10 , thereby forming the fiber bundle 2 (large crimp applying step).
  • the in-progress fiber bundle is heated at a temperature lower than that in the small crimp applying step. That is, the heating temperature (the temperature of the second gear parts 36 a , 36 b ) in the large crimp applying part 32 is lower than the heating temperature (the temperature of the first gear parts 35 a , 35 b ) in the small crimp applying part 31 , and is preferably 80° C. or higher and 90° C. or lower from the viewpoint of maintaining the shape of the small crimp part 11 .
  • a passage speed in the large crimp applying part 32 is preferably 0.5 m/min. or more and 8.0 m/min. or less.
  • the passage speed in the small crimp applying part 31 and the passage speed in the large crimp applying part 32 may be the same or different.
  • the ratio (flexion degree) of the length of the fiber bundle 2 to the length of the raw material fiber bundle is preferably 1.2 or more and 1.3 or less, and more preferably 1.23 or more and 1.25 or less.
  • the product of a width and a thickness at a portion 10 cm from the tip when the fiber bundle 2 is braided is preferably 65% or more, more preferably 115% or more, and still more preferably 117% or more, with respect to the product of a width and a thickness when the raw material fiber bundle is braided.
  • the product of the width and the thickness at a portion 10 cm from the tip when the fiber bundle 2 is braided is preferably 200% or less, and more preferably 170% or less, and still more preferably 150% or less, and particularly preferably 148% or less, with respect to the product of the width and the thickness when the raw material fiber bundle is braided.
  • the bulk of the fiber bundle 2 is preferably 180% or more, more preferably 200% or more, and still more preferably 250% or more, with respect to the bulk of the raw material fiber bundle of the same weight.
  • the bulk of the fiber bundle 2 is preferably 520% or less, more preferably 500% or less, and still more preferably 425% or less, with respect to the bulk of the raw material fiber bundle of the same weight.
  • the arithmetic average flyaway hair rate per 1 cm 3 of the fiber bundle 2 at a portion 10 cm from the tip when the fiber bundle 2 is braided is preferably 0% or more and 40% or less, more preferably 23% or less, and still more preferably 22% or less from the viewpoint of further improving the braid stop.
  • the arithmetic average flyaway hair rate can be, for example, an arithmetic average value of 10 times when measured 10 times.
  • the small crimp parts 11 and 11 adjacent to each other are close to each other near one first peak part 15 of the large crimp part 10 , and thus the small crimp parts 11 and 11 are easily entangled with each other, the volume of the braid is easily maintained, and the braid stop of the hair top is good.
  • the large crimp applying step is performed after the small crimp applying step, and in the large crimp applying step, the in-progress fibers are heated at a temperature lower than that of the small crimp applying step, so that both a good volume of the braid and good braid stop of the hair tip can be achieved.
  • the small crimp applying part 31 includes the pair of first gear parts 35 a and 35 b , but the present invention is not limited thereto.
  • the small crimp applying part 31 may include a plurality of pairs of first gear parts 35 a and 35 b.
  • the large crimp applying part 32 includes the pair of second gear parts 36 a and 36 b , but the present invention is not limited thereto.
  • the large crimp applying part 32 may include a plurality of pairs of second gear parts 36 a and 36 b.
  • the two types of crimp applying parts 31 and 32 having different sizes of the gear part form the two types of large and small crimp parts 10 and 11 , but the present invention is not limited thereto.
  • Three or more types of crimp parts may be formed by three or more types of crimp applying parts 31 and 32 having different sizes of the gear part.
  • the plurality of raw material fibers are bundled to form a raw material fiber bundle, the raw material fiber bundle is passed through the crimp applying parts 31 and 32 , and the crimp parts 10 and 11 are applied to the raw material fiber bundle, but the present invention is not limited thereto.
  • the raw material fibers may be passed through the crimp applying parts 31 and 32 one by one without being bundled, and the crimp parts 10 and 11 may be applied to the raw material fibers to form the fiber bundle 2 .
  • the crimp parts 10 and 11 are formed over the entire longitudinal direction of the fiber bundle 2 , but the present invention is not limited thereto.
  • the crimp parts 10 and 11 may be formed only in a part of the fiber bundle 2 in the longitudinal direction.
  • the small crimp part 11 is formed over the entire large crimp part 10 , but the present invention is not limited thereto.
  • the small crimp part 11 may be formed only in a part of the large crimp part 10 .
  • the component members can be freely replaced or added between the embodiments as long as it is included in the technical scope of the present invention.
  • Modacrylic fibers were used as raw material fibers, and a raw material fiber bundle obtained by bundling the raw material fibers was passed through a first gear part having a total tooth length size of 1.5 mm under conditions of a set temperature of 140° C., a gear temperature of 95° C. to 100° C., and a passage speed of 0.5 m/min to 8.0 m/min with a constant pressure. Thereafter, the resultant was passed through a second gear part having a total tooth length size of 2.5 mm under the conditions of a set temperature of 120° C., a gear temperature of 80° C. to 90° C., and a passage speed of 0.5 m/min to 8.0 m/min with a constant pressure to form a large crimp part and a small crimp part.
  • the fiber bundle thus obtained was used as Example 1.
  • Example 3 A fiber bundle obtained in the same manner as in Example 1 except that the total tooth length size of a second gear part was 3.0 mm was used as Example 3.
  • Example 4 A fiber bundle obtained in the same manner as in Example 1 except that the total tooth length size of a first gear part was 4.0 mm and the size of a second gear part was 7.0 mm was used as Example 4.
  • Example 5 A fiber bundle obtained in the same manner as in Example 1 except that the size of a second gear part was 7.0 mm was used as Example 5.
  • Example 6 A fiber bundle obtained in the same manner as in Example 1 except that the total tooth length size of a first gear part was 2.5 mm and the size of a second gear part was 4.0 mm was used as Example 6.
  • Example 1 a first gear part was not used, only a second gear part was used, and the total tooth length size of the second gear part was 1.5 mm to form a crimp part. This was used as Comparative Example 1.
  • the fiber bundle of each of Examples 1 to 4 and Comparative Examples 1 to 5 was cut so as to have a length of 60 cm and a weight of 70 g, and the bulk of the fiber bundle when laid and placed on a horizontal plane was measured.
  • each of the raw material fiber bundles is cut so as to have a length of 60 cm and a weight of 70 g, and the bulk of the raw material fiber bundle when laid and placed on a horizontal plane is measured.
  • the ratio of the bulk of the fiber bundle of each of Examples 1 to 4 and Comparative Examples 1 to 5 to the bulk of each of the raw material fiber bundles was calculated as a volume increase rate (bulk).
  • volume increase rate is the change rate of the bulk before and after crimp applying.
  • the fiber bundle of each of Examples 1 to 4 and Comparative Examples 1 to 5 was formed into a braid, and a width and a thickness at a portion of 10 cm from the tip at that time were measured.
  • S each of the raw material fiber bundles was formed into a braid, and a width and a thickness at a portion of 10 cm from the tip at that time were measured.
  • the ratio of the product of the width and the thickness of the fiber bundle of each of Examples 1 to 4 and Comparative Examples 1 to 5 to the product of the width and the thickness of each of the raw material fiber bundles was calculated as the volume increase rate (braid).
  • the volume increase rate (braid) is the cross-sectional area change rate when braided, from each of the raw material fiber bundles to the fiber bundle of each of Examples 1 to 4 and Comparative Examples 1 to 5.
  • a hair bundle volume measuring device manufactured by BOSSA NOVA Vision, product name: BOLERO was used to measure a flyaway hair rate (hereinafter, also referred to as FA rate) using a threshold of 50%.
  • a flyaway hair rate hereinafter, also referred to as FA rate
  • FIGS. 4 A and 4 B the fiber bundle of each of Examples 1 to 4 and Comparative Examples 1 to 5 was formed into a braid, and a portion from a hair tip to 10 cm at that time was irradiated with light, a portion having a transmittance of less than 50% was classified as bulk, and a portion having a transmittance of 50% or more was classified as flyaway hair, and the ratio of the flyaway hair to the whole was measured.
  • Image analysis software (WinROOF, manufactured by Mitani Shoji Co., Ltd.) captured side photographs taken, and calculated a value as a flexion degree by dividing a fiber flexion path (length of a path tracing the fiber) of each of Examples 1 to 6 and Comparative Examples 1 to 5 by a start-end distance (5 cm), and an average value of 5 fibers was obtained.
  • Example 1 and Comparative Example 1 were compared, as shown in Table 1, in Example 1 in which crimps were applied twice to gear parts having different total tooth length sizes, the volume increase rate (bulk), the volume increase rate (braid), and the flexion degree increased and the FA rate decreased as compared with Comparative Example 1 in which a crimp was applied once.
  • Example 1 and Comparative Example 2 Example 2 and Comparative Example 5, Example 3 and Comparative Example 3, and Example 4,5 and Comparative Example 4, having a common tooth length size of the second gear part, were compared respectively, in Examples 1 to 5 in which crimps were applied in the first gear part, the volume increase rate (bulk), the volume increase rate (braid), and the flexion degree increased and the FA rate decreased as compared with Comparative Examples 2, 5, 3, and 4 in which crimps were not applied in the first gear part.
  • Example 1 and Example 2 in which the types of the raw material fibers were different were compared, in Example 1 in which the modacrylic fibers were used as the raw material fibers, the volume increase rate (bulk), the volume increase rate (braid), and the flexion degree increased, and the FA rate was about the same.
  • the volume increase rate depends on the large crimp part by the size of the second peak part of the second gear part.
  • volume increase rate (bulk) varies forming the shape of an arch with a peak at which the total tooth length size of the second gear part is 3.0 mm. From this, it was suggested that the volume increase rate (bulk) has a maximum point in the range from 2.5 mm to 7.0 mm of the total tooth length size of the second gear part.
  • the size of the first gear part is preferably 4.0 mm or less, and more preferably 1.5 mm or more and 2.5 mm or less.
  • volume increase rate almost depends on the size of the large crimp part by the second gear part and has a maximum point in the range from 2.5 mm to 7.0 mm.
  • the volume increase rate (braid) depends on the size of the large crimp part by the second gear part.
  • the FA rate can be controlled by controlling the total tooth length size of the second gear part.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Braiding, Manufacturing Of Bobbin-Net Or Lace, And Manufacturing Of Nets By Knotting (AREA)
US18/777,971 2022-01-21 2024-07-19 Artificial hair and method for manufacturing artificial hair Pending US20240373964A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2022008035 2022-01-21
JP2022-008035 2022-01-21
PCT/JP2022/044895 WO2023139948A1 (ja) 2022-01-21 2022-12-06 人工毛髪及び人工毛髪の製造方法

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2022/044895 Continuation-In-Part WO2023139948A1 (ja) 2022-01-21 2022-12-06 人工毛髪及び人工毛髪の製造方法

Publications (1)

Publication Number Publication Date
US20240373964A1 true US20240373964A1 (en) 2024-11-14

Family

ID=87348082

Family Applications (1)

Application Number Title Priority Date Filing Date
US18/777,971 Pending US20240373964A1 (en) 2022-01-21 2024-07-19 Artificial hair and method for manufacturing artificial hair

Country Status (3)

Country Link
US (1) US20240373964A1 (https=)
JP (1) JPWO2023139948A1 (https=)
WO (1) WO2023139948A1 (https=)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD1085546S1 (en) * 2024-02-13 2025-07-22 Ecotrade Europe Ltd Hair extension bond

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09302513A (ja) * 1996-05-15 1997-11-25 Kanegafuchi Chem Ind Co Ltd 人工毛髪用捲縮繊維の製造方法
JP4943771B2 (ja) * 2006-08-21 2012-05-30 帝人ファイバー株式会社 ポリエステル短繊維
WO2010119758A1 (ja) * 2009-04-17 2010-10-21 電気化学工業株式会社 人工毛髪用繊維と、その用途及び製造方法
WO2019143132A2 (ko) * 2018-01-16 2019-07-25 주식회사 와이지켐 킨키 텍스처 및 나선형 회전 꼬임으로 경사 길이 특성이 구현된 필라멘트들의 연속 스트랜드 및 이의 제조방법
WO2020179238A1 (ja) * 2019-03-01 2020-09-10 株式会社カネカ 捲縮を有するポリエステル系繊維、その製造方法、それを含むパイル布帛、及びパイル布帛の製造方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD1085546S1 (en) * 2024-02-13 2025-07-22 Ecotrade Europe Ltd Hair extension bond

Also Published As

Publication number Publication date
WO2023139948A1 (ja) 2023-07-27
JPWO2023139948A1 (https=) 2023-07-27

Similar Documents

Publication Publication Date Title
US20240373964A1 (en) Artificial hair and method for manufacturing artificial hair
WO2022230619A1 (ja) 人工毛髪及び人工毛髪の製造方法
US11060209B2 (en) Continuous strand of filaments having gradient-length characteristic implemented by kinky texture and spiral rotational twist, and manufacturing method therefor
EP0742294B1 (en) Fiber for artificial hair having excellent bulkiness
WO2010119758A1 (ja) 人工毛髪用繊維と、その用途及び製造方法
JP2023119285A (ja) 人工毛髪用繊維束及び人工毛髪用繊維束の製造方法
JP2024132884A (ja) 人工毛髪用繊維束及び人工毛髪用繊維束の製造方法
US20170079354A1 (en) Wig and its manufacturing methods
US20250194724A1 (en) Fiber bundle for artificial hair, method for manufacturing fiber bundle for artificial hair, and in-process fiber band
JP5490495B2 (ja) タイヤバンド用テープの作製方法
JPWO2023139948A5 (https=)
KR20240022907A (ko) 김발 제조방법
JP2022114798A (ja) 人工毛髪の製造方法及び人工毛髪
US20250288040A1 (en) Artificial hair
WO2020261718A1 (ja) 毛髪束
US20180187350A1 (en) Multi-purpose tool for making crafts
US20020153060A1 (en) Methods of making pillows
JP2022114799A (ja) 人工毛髪の製造方法及び人工毛髪
JP2023119286A (ja) 人工毛髪用繊維束、頭飾製品の製造方法、及び頭飾製品
CN206040243U (zh) 一种显示器电缆
JP2016017235A (ja) かつら
CN203890580U (zh) 一种热塑性复合纱结构
JP6097968B2 (ja) 繊維構造体およびその用途
US20170113916A1 (en) Mechanically crimped fiber tow having increased bulk and crimp take-up
US1359112A (en) Elastic fabric

Legal Events

Date Code Title Description
AS Assignment

Owner name: KANEKA CORPORATION, JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:KANO, AKI;REEL/FRAME:068031/0102

Effective date: 20240620

STPP Information on status: patent application and granting procedure in general

Free format text: DOCKETED NEW CASE - READY FOR EXAMINATION

STPP Information on status: patent application and granting procedure in general

Free format text: NON FINAL ACTION COUNTED, NOT YET MAILED

STPP Information on status: patent application and granting procedure in general

Free format text: NON FINAL ACTION MAILED