EP1405937B1 - Fibre courte pour composite thermo-adhesif a base de polyester - Google Patents

Fibre courte pour composite thermo-adhesif a base de polyester Download PDF

Info

Publication number
EP1405937B1
EP1405937B1 EP02705398A EP02705398A EP1405937B1 EP 1405937 B1 EP1405937 B1 EP 1405937B1 EP 02705398 A EP02705398 A EP 02705398A EP 02705398 A EP02705398 A EP 02705398A EP 1405937 B1 EP1405937 B1 EP 1405937B1
Authority
EP
European Patent Office
Prior art keywords
polyester
fibers
bonding
component
staple fibers
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.)
Expired - Lifetime
Application number
EP02705398A
Other languages
German (de)
English (en)
Other versions
EP1405937A4 (fr
EP1405937A1 (fr
Inventor
Hironori c/o Teijin Limited GODA
Mikio c/o Teijin Limited TASHIRO
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.)
Teijin Ltd
Original Assignee
Teijin Ltd
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 Teijin Ltd filed Critical Teijin Ltd
Publication of EP1405937A1 publication Critical patent/EP1405937A1/fr
Publication of EP1405937A4 publication Critical patent/EP1405937A4/fr
Application granted granted Critical
Publication of EP1405937B1 publication Critical patent/EP1405937B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/53—Polyethers
    • 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
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/507—Polyesters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2904—Staple length fiber
    • Y10T428/2907—Staple length fiber with coating or impregnation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2904—Staple length fiber
    • Y10T428/2909—Nonlinear [e.g., crimped, coiled, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2929—Bicomponent, conjugate, composite or collateral fibers or filaments [i.e., coextruded sheath-core or side-by-side type]

Definitions

  • the present invention relates to a polyester-based heat-bonding conjugate staple fibers suitable for bonding a fiber structure such as nonwoven fabric or wadding and to a method for producing the same, in more detail to heat-bonding conjugate staple fibers capable of giving a fiber structure which can thermally be bonded at relatively low temperature and has good dimensional stability and to a method for producing the same.
  • conjugate fibers comprising a polyalkylene terephthalate such as polyethylene terephthalate as a core component and an amorphous polyester comprising isophthalic acid component, terephthalic acid component, or the like as an acid constituent and not having a crystal-melting point as a sheath component have widely been used, because of being capable of being bonded at relatively low temperature of 120 to 150°C to form a fiber structure without needing a thermal treatment at high temperature.
  • a polyalkylene terephthalate such as polyethylene terephthalate as a core component
  • an amorphous polyester comprising isophthalic acid component, terephthalic acid component, or the like as an acid constituent and not having a crystal-melting point as a sheath component
  • polyester-based heat-bonding conjugate fibers can form the fiber structure at the relatively low temperature, but has a problem that the obtained fiber structure has insufficient dimensional stability and is therefore largely deformed, when used under a high temperature atmosphere.
  • the present inventors have tried drawing treatments and thermal treatments at high temperature to solve the problem and improve the dimensional stability of the heat-bonding fibers themselves, but it has be found that the fibers are cohered each other at higher temperature than the glass transition point of the amorphous polyester to make the production of yarns difficult.
  • the object of the present invention is to provide polyester-based heat-bonding conjugate staple fibers capable of giving a high grade fiber structure, such as nonwoven fabric or wadding, which can thermally be bonded at relatively low temperature without needing a thermal treatment at high temperature, has good dimensional stability and is hardly deformed, even when used in a high temperature atmosphere, and to provide a method for producing the same.
  • the present inventors have found that it is effective for the achievement of the above-described object to use an amorphous polyester having a glass transition point of 50 to 100°C as a heat-bonding component and a polyalkylene terephthalate as a fiber-forming component and select heat-drawing conditions for the fibers, and has thus completed the present invention.
  • the polyester-based heat-bonding conjugate staple fibers of the present invention enabling the achievement of the above-described object is heat-bonding conjugate staple fibers comprising an amorphous polyester having glass transition point of 50 to 100°C and not having a crystal-melting point as a heat-bonding component and a polyalkylene terephthalate having a melting point of not less than 220°C as a fiber-forming component, characterized by having the number of crimps of 3 to 40 crimps / 25 mm, a crimp percent of 3 to 40%, and a web area shrinkage percent of not more than 20% defined as described below.
  • a card web nonwoven fabric comprising 100% of the heat-bonding conjugate staple fibers and having an area of A 0 and a basis weight of 30 g / m 2 is left in a hot air dryer maintained at 150°C for two minutes, and then the area A 1 of the nonwoven fabric is measured.
  • a method for producing polyester-based heat-bonding conjugate staple fibers as the other object of the present invention are characterized by melting and conjugationally extruding an amorphous polyester having a glass transition point of 50 to 100°C and not having a crystal-melting point and a polyalkylene terephthalate having a melting point of not less than 220°C, cooling and solidifying the conjugationally extruded fibers, taking off the fibers at a rate of not more than 1,500 m / minute to form the undrawn conjugate fibers, imparting a polyether polyester block copolymer to the undrawn conjugate fibers in an amount of not less than 0.03 percent by weight on the basis of the weight of the fibers, drawing the undrawn conjugate fibers in a draw ratio of 0.72 to 1.25 times the cold maximum draw ratio at a temperature of T 1 to (T 2 + 30°C), and further crimping the drawn fibers so as to give the number of crimps of 3 to 40 cri
  • the fiber-forming component of the polyester-based heat-bonding conjugate staple fibers of the present invention is a polyalkylene terephthalate having a melting point of not less than 220°C.
  • the melting point of the polyester as the fiber-forming component is less than 220°C, it is not only difficult to stably produce the conjugate fibers, but the stability of the conjugate fibers is also deteriorated on a heat-bonding treatment.
  • the preferable concrete examples of the polyalkylene terephthalate are polyethylene terephthalate and polybutylene terephthalate, and may contain one or more copolymerization components and additives such as a delustering agent, a coloring matter, and a lubricant in small amounts within ranges not deteriorating the characteristics, respectively.
  • the polyethylene terephthalate is more preferable because of being inexpensive and generally used.
  • the amorphous polyester used as the heat-bonding component is a polyester having a glass transition point of 50 to 100°C and not having a crystal-melting point.
  • the polyester is not preferable, because the fibers are easily cohered each other, when drawn by the production method described later, and because the conjugate fibers having excellent dimensional stability comprising an area shrinkage percent of not more than 20% can not be obtained.
  • the glass transition point exceeds 100°C, the polyester is also not preferable, because the thermal bonding property is deteriorated at low temperature of 120 to 150°C.
  • the amorphous polyester includes random or block copolymers comprising acid components such as terephthalic acid, isophthalic acid, 2, 6-naphthalene dicarboxylic acid, 5-sodium sulfoisophthalic acid, adipic acid, sebacic acid, azelaic acid, dodecane dicarboxylic acid, and 1,4-cyclohexane dicarboxylic acid, and diols such as ethylene glycol, 1,3-propanediol, 1,4-butanediol, 1,5-pentanediol, 1,6-hexanediol, diethylene glycol, 1,4-cyclohexanediol, and 1,4-cyclohexanedimethanol.
  • an amorphous copolyester comprising terephthalic acid component, isophthalic acid component, ethylene glycol component and diethylene glycol component is preferable from the points of costs and handleability.
  • the above-described copolyester comprising the terephthalic acid component, the isophthalic acid component, the ethylene glycol component and the diethylene glycol component
  • the molar ratio of the terephthalic acid component : the isophthalic acid component is suitably 50 : 50 to 80
  • the molar ratio of the ethylene glycol component : the diethylene glycol component may arbitrarily be selected within a range of 0 : 100 to 100 : 0.
  • the polyester-based heat-bonding conjugate staple fibers may be produced in any conjugate form selected from a sheath-core type form, an eccentric sheath-core type form, a side-by-side type form, a sea-island type form, a split type from, and the like.
  • a sheath-core type form, an eccentric sheath-core type form, and the side-by-side type form are more preferable.
  • the number of crimps and the crimp percent of the polyester-based heat-bonding conjugate staple fibers of the present invention are 3 to 40 crimps / 25 mm and 3 to 40%, respectively.
  • the staple fibers have the number of crimps of less than less than 3 crimps / 25 mm or a crimp percent of less than 3%, the fibers are not preferable, because the degree of entanglement between the staple fibers is insufficient to deteriorate the card passage of the staple fibers, whereby the high grade fiber structure is not obtained.
  • the staple fibers have the number of crimps of more than 40 crimps / 25 mm or a crimp percent of more than 40%, the fibers are also not preferable, because the degree of entanglement between the staple fibers is too large to sufficiently card the staple fibers, whereby a high grade fiber structure is not obtained.
  • the number of crimps and the crimp percent are more preferably 5 to 30 crimps / 25 mm and 5 to 30%, respectively.
  • the form of the crimps includes mechanical crimps and three-dimensional crimps, and may suitably be selected and set in response to the use or aim of the staple fibers.
  • the length and single fiber fineness of the polyester-based heat-bonding conjugate staple fibers do not need to be especially limited, and may suitably be set in response to the use and aim of the staple fibers.
  • the web area shrinkage percent defined as described below is not more than 20%.
  • said conjugate staple fibers can be processed in the form of 100% or in the form of a blend with other fibers to obtain a fiber structure having excellent dimensional stability even in high temperature atmosphere.
  • the shrinkage percent exceeds 20%, the fiber structure having excellent dimensional stability in a high temperature atmosphere can not be obtained.
  • the web area shrinkage percent is more preferably not more than 10%.
  • a card web nonwoven fabric comprising 100% of the heat-bonding conjugate staple fibers and having an area of A 0 and a basis weight of 30 g /m 2 is left in a hot air dryer maintained at 150°C for two minutes, and then the area A 1 of the nonwoven fabric is measured.
  • the above-mentioned polyester-based heat-bonding conjugate staple fibers of the present invention can efficiently be produced, for example, by the following method. Namely, the above-mentioned amorphous polyester and the polyalkylene terephthalate are conjugated, preferably conjugated in the form of a sheath-core type, an eccentric sheath-core type, or a side-by-side type, melted and extruded. The extruded fibers are taken off at a speed of less than 1,500 m / minute to obtain the undrawn conjugate fibers.
  • the obtained undrawn conjugate fibers are subjected to the addition of a polyether polyester block copolymer in an amount of not less than 0.03 percent by weight on the basis of the weight of said fibers, drawn in a draw ratio of 0.72 to 1.25 times the cold maximum draw ratio at a temperature of T 1 to (T 2 + 30°C), and further crimped into the crimped fibers having the number of crimps of 3 to 40 crimps / 25 mm and a crimp percent of 3 to 40%, and then cut in a desired length, thus enabling to produce the polyester-based heat-bonding conjugate staple fibers.
  • T 1 is either higher temperature among the glass transition point of the amorphous polyester and the glass transition point of the polyalkylene terephthalate
  • T 2 is the glass transition point of the amorphous polyester.
  • a take-off speed exceeding 1,500 m / minute is not preferable, because the web area shrinkage percent can not be reduced to not more than 20%, even when the obtained undrawn conjugate fibers are drawn in the above-described conditions.
  • the first point on the above-described production method is to add the polyether polyester block copolymer to the surfaces of the conjugate fibers at a stage before the taken undrawn conjugate fibers are drawn.
  • the polyester-based heat-bonding conjugate staple fibers having a web area shrinkage percent of not more than 20% can be obtained without causing cohesion between the fibers in the drawing process, when the drawing temperature is not more than T 2 + 30°C.
  • the fiber structure having excellent mechanical characteristics can be obtained, because the heat-bonding property of the conjugate fibers is not deteriorated so much, even when said polyether polyester block copolymer is applied to the surfaces of the conjugate fibers.
  • a preferably used polyether polyester block copolymer includes especially a copolymer comprising terephthalic acid component and isophthalic acid component and / or an alkali metal sulfoisophthalic acid component in a molar ratio of 40 : 60 to 100 : 0 as a dicarboxylic acid component and ethylene glycol as a glycol component and copolymerized with 20 to 95 percent by weight of a polyalkylene glycol having a number-average molecular weight of 600 to 10,000, and the copolymer is especially preferable from the point of the stability of an aqueous emulsion and the point of an cohesion generation-preventing effect in a drawing process.
  • An acid component such as adipic acid, sebacic acid, azelaic acid, dodecane dicarboxylic acid, or 1, 4-cyclohexanedicarboxylic acid and / or a diol component such as 1, 3-propanediol, 1, 4-butanediol, 1, 5-pentanediol, 1, 6-hexanediol, diethylene glycol, 1, 4-cyclohexanediol, or 1, 4-cyclohexane dimethanol may be copolymerized in small amounts.
  • one end of the polyalkylene glycol may be sealed with an ether bond such as a monomethyl ether, a monoethyl ether, or a monophenyl ether.
  • the polyalkylene glycol includes polyethylene glycol, ethylene oxide - propylene oxide copolymer, polypropylene glycol, and polytetramethylene glycol.
  • the polyethylene glycol is especially preferable.
  • the number-average molecular weight of the polyether polyester block copolymer is preferable to be in the range of 3,000 to 20,000, because of giving a higher cohesion-preventing effect.
  • the amount of the polyether polyester block copolymer adhered to the undrawn fibers is necessary to be not less than 0.03 percent by weight on the basis of said undrawn fibers.
  • An amount of less than 0.03 percent by weight is not preferable, because a sufficient cohesion-preventing effect is not obtained in the drawing process described later.
  • the cohesion-preventing effect reaches the highest limit and does not increase, even when the adhesion amount is increased. Therefore, an amount of not more than 0.5 percent by weight, especially a range of 0.05 to 0.3 percent by weight, is suitable.
  • a method for applying the polyether polyester block copolymer to the surfaces of the undrawn conjugate fibers is especially not limited, and the polyether polyester block copolymer may be applied by an arbitrary conventional known method usually in the form of an aqueous emulsion solution.
  • an emulsifier In order to stabilize said emulsion solution, not only an emulsifier but also additives such as an antistatic agent, a lubricant, a rust-preventing agent, an antifungal agent, and an antibacterial agent may be added.
  • the second point on the above-described production method is a drawing temperature.
  • T 2 glass transition point of the amorphous copolyester
  • the target heat-bonding conjugate staple fibers having the excellent dimensional stability by the present invention may not be obtained, when the drawing temperature is lower than either one of the glass transition points of the amorphous copolyester and the polyalkylene terephthalate. Further, it is also important not to set the drawing temperature to high temperature exceeding T 2 (glass transition point of the amorphous copolyester) + 30°C.
  • the drawing temperature exceeding T 2 + 30°C When the drawing temperature exceeds T 2 + 30°C, the cohesion of the amorphous copolyester can sufficiently not be prevented , and the generation of fused fiber bundles and the deterioration in the stability of a crimper on the addition of crimps to the fibers by the use of a push type crimper are caused. Thereby, the drawing temperature exceeding T 2 + 30°C is not preferable.
  • the above-described drawing may be one step drawing or more step drawing, but it is necessary that the total draw ratio is 0.72 to 1.25 times the cold draw ratio.
  • the draw ratio is less than 0.72 time the cold draw ratio, the draw ratio is not preferable, because the dimensional stability of the produced fiber structure is deteriorated.
  • the draw ratio is more than 1.25 times the cold draw ratio, the draw ratio is also not preferable, because the decrease in the heat-bonding property as well as the deterioration in the drawing property are caused.
  • the cold draw ratio of the undrawn fibers is obtained by drawing the undrawn conjugate fibers collected within five minutes from the just spun time at a speed 5 cm / second in an initial chuck length of 10 cm in air having a relative humidity of 65% at 25°C, and then dividing the distance between the initial chuck length and the chuck length at a time when the chuck can not be elongated, by the initial chuck length (10 cm).
  • the above-described drawing is carried out in a draw ratio of 0.7 to 1.0 time the cold draw ratio of the undrawn conjugate fibers at a temperature of T 1 (either higher temperature among the glass transition point of the amorphous copolyester and the glass transition point of the polyalkylene terephthalate) to (T 1 + 10°C) and then in a draw ratio of 1.03 to 1.25 at a temperature of (T 1 + 10°C) to [T 2 (glass transition point of the amorphous copolyester) + 30°C].
  • the drawn conjugate fibers are crimped in conditions giving the number of crimps of 3 to 40 crimps / 25 mm and a crimp percent of 3 to 40% by a known conventional method, and then cut in a desired length.
  • the crimping form is a mechanical crimp form, for example, a stuffing type crimper is used, and the conditions of the stuffing pressure and temperature may suitably be controlled.
  • the crimping form is a three-dimensional crimp form, the conjugate structures of the conjugate fibers and cooling conditions at the spinning time may suitably be selected.
  • the obtained polyester-based heat-bonding conjugate staple fibers of the present invention have good dimensional stability, and are suitable for fiber structures such as nonwoven fabrics or wadding.
  • the heat-bonding conjugate staple fibers may singly be used for the fiber structures such as the nonwoven fabrics, or the heat-bonding conjugate staple fibers as main fibers may be blended with other fibers and then used for the fiber structures such as the nonwoven fabrics.
  • the glass transition point (Tg) and the melting point (Tm) were measured with a differential scanning calorimeter DSC-7 type manufactured by Perkin-Elmer Inc. at a temperature-rising rate of 20°C / minute.
  • the intrinsic viscosity was measured in ortho-chlorophenol as a solvent at a temperature of 35°C.
  • the number of crimps and the crimp percent were measured by a method described in JIS L 1015 7. 12.
  • the fineness was measured by a method described in JIS L 1015 7. 5.1 A method.
  • the fiber length was measured by a method described in JIS L 1015 7. 4. 1 C method.
  • the card web having an area shrinkage percent of not more than 20% was accepted.
  • Area shrinkage percent ( % ) ( 625 ⁇ A 1 ) / 625 ⁇ 100
  • Polyethylene terephthalate having an intrinsic viscosity of 0.64, a Tg of 67°C and a Tm of 256°C was used as a fiber-forming component.
  • the pellets of the polymers were vacuum-dried, fed into a sheath-core type conjugate melt-spinning device and melt-spun from a spinneret having 450 spinning nozzles in a conjugate ratio comprising a volume ratio of 50 / 50 at a spinning temperature of 290°C in an extrusion rate of 650 g / minute.
  • the spun fibers were cooled with 30°C cold air, subjected to the adhesion of a treating agent comprising the emulsion of a polyether polyester block copolymer copolymerized from terephthalic acid component and isophthalic acid component in a molar ratio of 80 / 20 as an acid component, ethylene glycol as a glycol component, and polyethylene glycol having a number-average molecular weight of 3,000 and having an average molecular weight of 10,000 in a pure content of 0.1 percent by weight on the basis of the fibers by the use of an oiling roller, and then taken off at a rate of 900 m / minute to obtain the undrawn sheath-core type conjugate fibers.
  • the cold maximum draw ratio (hereinafter, referred to as CDR) of the undrawn fibers was 4.5.
  • the undrawn conjugate fibers were bundled to form the tow of 110,000 dtex (100,000 denier).
  • the tow was first drawn in a draw ratio of 3.5 (0.78 time CDR) in 72°C hot water, further drawn in a draw ratio of 1.15 (total draw ratio is 4.0; 0.89 time CDR) in 80°C hot water, oiled with a spinning oil comprising potassium laurylphosphate, naturally cooled to 35°C, crimped with a stuffing type crimper, and then cut in a fiber length of 51 mm to obtain the heat-bonding conjugate staple fibers having a single fiber fineness of 4.4dtex, the number of crimps of 10 crimps / 25 mm and a crimp percent of 15%.
  • Heat-bonding conjugate stable fibers having a single fiber fineness of 4.4 dtex, a fiber length of 51 mm, the number of crimps of 10 crimps / 25 mm, and a crimp percent of 15% were obtained in the same conditions as in Example 1 except that the heat-bonding component, the fiber-forming component, the treating agent, the drawing ratio, and the drawing temperature were changed.
  • the polyester-based heat-bonding conjugate staple fibers of the present invention can provide high-grade fiber structures which have good dimensional stability and hardly cause deformation, even when used under high temperature atmospheres, although the fiber structures can be formed at relative low temperature.
  • the above-described heat-bonding conjugate staple fibers can extremely stably and easily be produced without causing cohesion.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Multicomponent Fibers (AREA)
  • Nonwoven Fabrics (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Developing Agents For Electrophotography (AREA)

Claims (8)

  1. Fibres coupées conjuguées pour thermoliage à base de polyester, comprenant en tant que composant de thermoliage un polyester amorphe ayant une température de transition vitreuse de 50 à 100°C et n'ayant pas de point de fusion cristalline, et en tant que composant fibrogène un poly(téréphtalate d'alkylène) ayant un point de fusion d'au moins 220°C, caractérisées en ce qu'elles présentent un nombre de frisures de 3 à 40 frisures/25 mm, un taux de frisure de 3 à 40 %, et un taux de rétraction de l'aire du voile d'au plus 20 %, tel que défini comme décrit ci-dessous :
    taux de rétraction de l'aire du voile : un tissu non tissé formant voile de carde, comprenant 100 % des fibres coupées conjuguées de thermoliage et ayant une aire de A0 et une masse surfacique de 30 g/m2, est abandonné pendant deux minutes dans un séchoir à air chaud maintenu à 150°C, puis on mesure l'aire A1 du tissu non tissé. Le taux de rétraction de l'aire du voile est déterminé par l'expression suivante : taux de rétraction de l ′ aire du voile ( % ) = ( A 0 - A 1 ) / A 0 × 100.
    Figure imgb0006
  2. Fibres coupées conjuguées pour thermoliage à base de polyester selon la revendication 1, dans lesquelles un copolymère séquencé polyéther-polyester est déposé sur les surfaces des fibres à raison d'au moins 0,03 % en poids par rapport au poids des fibres.
  3. Fibres coupées conjuguées pour thermoliage à base de polyester selon la revendication 1 ou 2, dans lesquelles le composant de thermoliage est un copolyester amorphe comprenant un composant acide isophtalique, un composant acide téréphtalique, un composant éthylèneglycol et un composant diéthylèneglycol.
  4. Fibres coupées conjuguées pour thermoliage à base de polyester selon la revendication 1 ou 2, dans lesquelles le composant fibrogène est le poly(téréphtalate d'éthylène).
  5. Procédé de production de fibres coupées conjuguées pour thermoliage à base de polyester, caractérisé par la fusion et l'extrusion conjuguée d'un polyester amorphe ayant une température de transition vitreuse de 50 à 100°C et n'ayant pas de point de fusion cristalline, et d'un poly(téréphtalate d'alkylène) ayant un point de fusion d'au moins 220°C, le refroidissement et la solidification des fibres extrudées de façon conjuguée, l'étirage des fibres à une vitesse d'au plus 1500 m/min pour former les fibres conjuguées non étirées, l'application d'un copolymère séquencé polyéther-polyester sur les fibres conjuguées non étirées à raison d'au moins 0,03 % en poids par rapport au poids des fibres, l'étirage des fibres conjuguées non étirées selon un taux d'étirage de 0,72 à 1,25 fois le taux d'étirage maximal à froid à une température comprise entre T1 et (T2 + 30°C), et un frisage ultérieur des fibres étirées de façon à arriver à un nombre de frisures de 3 à 40 frisures/25 mm et à un taux de frisure de 3 à 40 %. Ici, T1 est la température la plus élevée parmi la température de transition vitreuse du polyester amorphe et la température de transition vitreuse du poly(téréphtalate d'éthylène), et T2 est la température de transition vitreuse du polyester amorphe.
  6. Procédé de production des fibres coupées conjuguées pour thermoliage à base de polyester selon la revendication 5, dans lequel l'étirage est un étirage en deux étapes, comprenant un étirage à un taux d'étirage de 0,70 à 1,00 fois le taux d'étirage maximal à froid à une température de T1 à (T1 + 10°C), puis à un taux d'étirage de 1,03 à 1,25 à une température comprise entre (T1 + 10°C) et (T2 + 30°C).
  7. Procédé de production des fibres coupées conjuguées pour thermoliage à base de polyester selon la revendication 5 ou 6, dans lequel le fluide chauffant utilisé pour l'étirage est l'eau chaude.
  8. Procédé de production des fibres coupées conjuguées pour thermoliage à base de polyester selon la revendication 5 ou 6, dans lequel le copolymère séquencé polyéther-polyester est un copolymère séquencé comprenant, en tant que composant acide, un composant acide téréphtalique et un composant acide isophtalique et/ou un composant sel d'un métal alcalin de l'acide sulfoisophtalique selon un rapport en moles de 40:60 à 100:0, et de l'éthylèneglycol en tant que composant glycol, et copolymérisé avec 20 à 95 %s en poids d'un polyalkylèneglycol ayant une masse moléculaire moyenne en nombre de 600 à 10 000.
EP02705398A 2001-04-04 2002-03-20 Fibre courte pour composite thermo-adhesif a base de polyester Expired - Lifetime EP1405937B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2001105623A JP3778808B2 (ja) 2001-04-04 2001-04-04 ポリエステル系熱接着性複合繊維およびその製造方法
JP2001105623 2001-04-04
PCT/JP2002/002694 WO2002081794A1 (fr) 2001-04-04 2002-03-20 Fibre courte pour composite thermo-adhesif a base de polyester

Publications (3)

Publication Number Publication Date
EP1405937A1 EP1405937A1 (fr) 2004-04-07
EP1405937A4 EP1405937A4 (fr) 2005-11-09
EP1405937B1 true EP1405937B1 (fr) 2006-07-26

Family

ID=18958280

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02705398A Expired - Lifetime EP1405937B1 (fr) 2001-04-04 2002-03-20 Fibre courte pour composite thermo-adhesif a base de polyester

Country Status (10)

Country Link
US (1) US20030134115A1 (fr)
EP (1) EP1405937B1 (fr)
JP (1) JP3778808B2 (fr)
KR (1) KR100510156B1 (fr)
CN (1) CN1229530C (fr)
AT (1) ATE334240T1 (fr)
CA (1) CA2421709C (fr)
DE (1) DE60213418T2 (fr)
TW (1) TW591140B (fr)
WO (1) WO2002081794A1 (fr)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4027728B2 (ja) * 2002-06-21 2007-12-26 帝人ファイバー株式会社 ポリエステル系短繊維からなる不織布
JP4537701B2 (ja) * 2003-12-26 2010-09-08 日本エステル株式会社 不織布用短繊維及び短繊維不織布
JP2005254482A (ja) * 2004-03-09 2005-09-22 Teijin Fibers Ltd 車両内装用基材およびその製造方法および車両内装材
JP4881026B2 (ja) * 2006-02-06 2012-02-22 帝人ファイバー株式会社 エアレイド不織布用熱接着性複合繊維およびその製造方法
EP1988201A1 (fr) * 2006-02-06 2008-11-05 Teijin Fibers Limited Procédé de production de fibre polyester destinée à des nontissés aéroliques
JP4955278B2 (ja) * 2006-02-06 2012-06-20 帝人ファイバー株式会社 エアレイド不織布用ポリエステル系繊維およびその製造方法
JP4820211B2 (ja) * 2006-05-12 2011-11-24 帝人ファイバー株式会社 自己伸長性熱接着性複合繊維及びその製造方法
TWI382924B (zh) * 2009-11-20 2013-01-21 Univ Feng Chia 全聚酯自增強複合材料、製造方法及其應用
JP4945004B2 (ja) * 2011-08-22 2012-06-06 帝人ファイバー株式会社 エアレイド不織布用ポリエステル系繊維の製造方法
JP2013133571A (ja) * 2011-12-27 2013-07-08 Teijin Ltd 機械捲縮性能の高い熱接着性複合繊維およびその製造方法
US9505196B2 (en) * 2012-03-28 2016-11-29 Thomas Miller Laminate facing for fiber reinforced materials and composite materials formed therefrom
CN104198523B (zh) * 2014-08-29 2017-01-25 东莞市正新包装制品有限公司 一种热风测试收缩率的测试方法及装置
KR102043372B1 (ko) * 2014-09-05 2019-11-11 주식회사 휴비스 촉감과 색상이 우수한 저융점 바인더용 공중합 폴리에스테르 및 이를 이용한 폴리에스테르 바인더 복합섬유
CN105648654A (zh) * 2015-12-29 2016-06-08 江苏苏博特新材料股份有限公司 聚氧亚甲基纤维针刺非织造土工布及其制备方法
JP7009995B2 (ja) * 2016-07-19 2022-02-10 東レ株式会社 共重合ポリエステルおよびそれを含む複合繊維
JP6313841B1 (ja) * 2016-12-13 2018-04-18 ユニチカ株式会社 自動車装備材用半製品の製造方法
JP6671690B2 (ja) 2017-04-19 2020-03-25 ユニチカ株式会社 繊維ボードの製造方法
KR20190136023A (ko) * 2017-04-27 2019-12-09 코베스트로 엘엘씨 3d 인쇄에 사용되는 구조화 필라멘트
CN112352069B (zh) * 2018-07-11 2022-04-01 株式会社钟化 聚酯系纤维、使用其的绒头布帛及它们的制造方法
CN113166381B (zh) * 2018-11-30 2023-05-02 汇维仕股份公司 粘合强度得到改善的粘合剂用聚酯树脂以及使用此的聚酯纤维
JP7448194B2 (ja) * 2020-03-23 2024-03-12 日本エステル株式会社 ポリエステル系芯鞘型複合繊維
TWI803790B (zh) * 2020-11-24 2023-06-01 遠東新世紀股份有限公司 鞘芯型熱黏合纖維及不織布
CN112760739B (zh) * 2020-12-31 2021-10-29 扬州富威尔复合材料有限公司 一种汽车内饰用低熔点聚酯纤维及其制备方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IN168824B (fr) * 1986-10-21 1991-06-15 Du Pont
GB8806419D0 (en) * 1988-03-18 1988-04-20 Du Pont Improvements relating to fibres
JPH073534A (ja) * 1993-06-11 1995-01-06 Toyobo Co Ltd 低収縮熱接着繊維
JP3190485B2 (ja) * 1993-07-15 2001-07-23 帝人株式会社 バインダー繊維
JP3879289B2 (ja) * 1998-12-15 2007-02-07 東レ株式会社 クッション材用ポリエステル短繊維の製造方法およびクッション材の製造方法
JP4312867B2 (ja) * 1999-02-04 2009-08-12 日本エステル株式会社 熱接着性複合繊維およびそれを用いた不織布ならびにその不織布の製造方法
JP2001003256A (ja) * 1999-06-22 2001-01-09 Unitika Ltd 長繊維不織布およびその製造方法
JP3856617B2 (ja) * 2000-04-04 2006-12-13 帝人ファイバー株式会社 仮撚加工用ポリエステル繊維

Also Published As

Publication number Publication date
DE60213418D1 (de) 2006-09-07
KR100510156B1 (ko) 2005-08-25
KR20030005134A (ko) 2003-01-15
JP3778808B2 (ja) 2006-05-24
WO2002081794A1 (fr) 2002-10-17
CN1460136A (zh) 2003-12-03
CA2421709C (fr) 2009-01-20
ATE334240T1 (de) 2006-08-15
US20030134115A1 (en) 2003-07-17
EP1405937A4 (fr) 2005-11-09
CN1229530C (zh) 2005-11-30
HK1058952A1 (en) 2004-06-11
DE60213418T2 (de) 2007-02-15
TW591140B (en) 2004-06-11
JP2002302833A (ja) 2002-10-18
EP1405937A1 (fr) 2004-04-07
CA2421709A1 (fr) 2003-03-07

Similar Documents

Publication Publication Date Title
EP1405937B1 (fr) Fibre courte pour composite thermo-adhesif a base de polyester
CN1109782C (zh) 卷曲聚酯纤维及包含其的混合纤维结构
TWI410540B (zh) Thermal adhesive composite fiber and method for producing the same
CN101379232A (zh) 热粘合性复合纤维及其制造方法
CN113005562A (zh) 一种高弹性复合纤维及其应用
JP4376408B2 (ja) 繊維構造体
US7094466B2 (en) 3GT/4GT biocomponent fiber and preparation thereof
CN101490317A (zh) 多叶片状异形长丝、织物及其制备方法
JPH10310965A (ja) ポリエステル短繊維不織布
JP3109769B2 (ja) 複合繊維
JP2000345457A (ja) ファイバーボールの製造方法
JP2002129433A (ja) 高伸縮性ポリエステル系複合繊維
JP2882636B2 (ja) 遠赤外線放射複合繊維及び該繊維を含有する織編物ならびに不織布
JP2002061029A (ja) ポリエステル系複合繊維及びその製造方法
JP2001226831A (ja) 熱接着性複合繊維およびそれからなる繊維構造体
JPH04178425A (ja) 低融点結晶性ポリエステル及びその製造方法、並びにポリエステル系熱接着性繊維
HK1058952B (en) Polyester-based thermally adhesive composite short fiber and method for producing the same
JPH08294586A (ja) ポリエステル系弾性耐熱固綿の製造方法
JP2011195978A (ja) 湿式不織布用熱接着性複合繊維およびその製造方法
JP2001064828A (ja) ポリエステル系複合繊維及び不織布
JP2001226830A (ja) 熱接着性複合繊維及びそれからなる繊維構造体
JPH05279911A (ja) 特殊中空繊維および該繊維からなる繊維集合体の製造方法
JP2571836B2 (ja) 複合繊維の製造方法
JP2001115340A (ja) ポリエステル系熱接着性複合短繊維及び不織布
JP2026032553A (ja) 熱接着性複合繊維、それを含む不織布、それを含むマットレス及びトッパー

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20030205

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Extension state: AL LT LV MK RO SI

A4 Supplementary search report drawn up and despatched

Effective date: 20050927

RIC1 Information provided on ipc code assigned before grant

Ipc: 7D 01D 5/22 B

Ipc: 7D 02G 1/12 B

Ipc: 7D 01F 11/08 B

Ipc: 7D 06M 15/507 B

Ipc: 7D 06M 15/53 B

Ipc: 7D 01F 8/14 A

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20060726

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060726

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060726

Ref country code: LI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060726

Ref country code: CH

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060726

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060726

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REF Corresponds to:

Ref document number: 60213418

Country of ref document: DE

Date of ref document: 20060907

Kind code of ref document: P

RAP2 Party data changed (patent owner data changed or rights of a patent transferred)

Owner name: TEIJIN LIMITED

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20061026

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20061026

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20061106

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20061226

NLT2 Nl: modifications (of names), taken from the european patent patent bulletin

Owner name: TEIJIN LIMITED

Effective date: 20061025

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
ET Fr: translation filed
REG Reference to a national code

Ref country code: FR

Ref legal event code: RM

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20070427

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070331

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070320

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20061027

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060726

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070320

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060726

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20100318

Year of fee payment: 9

Ref country code: IT

Payment date: 20100125

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20100105

Year of fee payment: 9

Ref country code: GB

Payment date: 20100302

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20100318

Year of fee payment: 9

BERE Be: lapsed

Owner name: *TEIJIN LTD

Effective date: 20110331

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20110320

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20111130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110331

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20111001

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110320

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110320

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 60213418

Country of ref document: DE

Effective date: 20111001