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WO2018147251A1 - Fibres composites thermocollantes à âme enrobée, et tricot chaîne - Google Patents

Fibres composites thermocollantes à âme enrobée, et tricot chaîne Download PDF

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Publication number
WO2018147251A1
WO2018147251A1 PCT/JP2018/003927 JP2018003927W WO2018147251A1 WO 2018147251 A1 WO2018147251 A1 WO 2018147251A1 JP 2018003927 W JP2018003927 W JP 2018003927W WO 2018147251 A1 WO2018147251 A1 WO 2018147251A1
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WO
WIPO (PCT)
Prior art keywords
core
sheath
polyester
melting point
composite fiber
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.)
Ceased
Application number
PCT/JP2018/003927
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English (en)
Japanese (ja)
Inventor
勇太 渡邉
佐藤　淳二
稔 藤森
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Toray Industries Inc
Original Assignee
Toray Industries Inc
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 Toray Industries Inc filed Critical Toray Industries Inc
Priority to US16/481,928 priority Critical patent/US20200040484A1/en
Priority to CN201880010784.2A priority patent/CN110268109B/zh
Priority to JP2018513569A priority patent/JP6610778B2/ja
Priority to KR1020197017284A priority patent/KR102502868B1/ko
Publication of WO2018147251A1 publication Critical patent/WO2018147251A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • D01D5/12—Stretch-spinning methods
    • D01D5/16—Stretch-spinning methods using rollers, or like mechanical devices, e.g. snubbing pins
    • 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
    • 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
    • D01D5/34—Core-skin structure; Spinnerette packs therefor
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B21/00—Warp knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
    • D04B21/06—Patterned fabrics or articles
    • D04B21/08—Patterned fabrics or articles characterised by thread material
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B21/00—Warp knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
    • D04B21/14—Fabrics characterised by the incorporation by knitting, in one or more thread, fleece, or fabric layers, of reinforcing, binding, or decorative threads; Fabrics incorporating small auxiliary elements, e.g. for decorative purposes
    • D04B21/16—Fabrics characterised by the incorporation by knitting, in one or more thread, fleece, or fabric layers, of reinforcing, binding, or decorative threads; Fabrics incorporating small auxiliary elements, e.g. for decorative purposes incorporating synthetic threads

Definitions

  • the present invention has less fuzz generation in high-order processes, is excellent in high-order passage even in applications with high quality requirements such as tricot use, and the woven or knitted fabric after heat bonding is excellent in strength, dimensional stability, and durability.
  • the present invention relates to a heat-adhesive core-sheath composite fiber excellent in quality as a flow passage material for a liquid filtration membrane.
  • Polyester fibers are suitable as raw materials for clothing, industrial materials, etc. due to their excellent dimensional stability, weather resistance, mechanical properties, durability, and productivity that can be mass-produced relatively inexpensively. Used in applications.
  • polyester fiber having thermal adhesiveness a yarn composed of two or more kinds of polyesters having different melting points or softening points is suitable.
  • mode for example, mixed yarn made of filament yarn, core-sheath type or side-by-side type composite fiber can be mentioned.
  • a composite fiber composed of polymers having different melting points is superior in quality after thermal bonding.
  • a core-sheath composite yarn excellent in quality such as productivity of raw yarn and surface smoothness of the fabric after heat treatment
  • the sheath component is composed of a component having a melting point or a softening point lower than that of the core component.
  • Sheath-type composite fibers are actively used.
  • a core-sheath type composite fiber having a polyester whose main repeating unit is ethylene terephthalate as a core part and a polymer having a softening temperature of 130 to 200 ° C. as a sheath part has been proposed.
  • the core-sheath-type conjugate fiber it has a predetermined strength and elongation characteristic, does not cause misalignment due to displacement at the thermal bonding intersection, and does not generate wrinkles. Is done.
  • the polymer in the sheath portion has a low crystallinity having no clear melting point, as exemplified by polyester copolymerized with isophthalic acid. For this reason, when the woven or knitted fabric made of the core-sheath type composite fiber is heat-bonded, unevenness occurs in the bonding between the composite fibers, resulting in dimensional stability, variation in the strength and elongation of the fabric, and the like. There was a problem of poor quality when used as a material.
  • Patent Document 2 a core-sheath type composite fiber in which 90 mol% or more of repeating units have a core made of a polymer composed of ethylene terephthalate and 60 to 90 mol% of repeating units have a copolymer polybutylene terephthalate made of butylene terephthalate as a sheath.
  • Patent Document 2 a core-sheath type composite fiber in which 90 mol% or more of repeating units have a core made of a polymer composed of ethylene terephthalate and 60 to 90 mol% of repeating units have a copolymer polybutylene terephthalate made of butylene terephthalate as a sheath.
  • the sheath component is imparted with appropriate crystallinity, and since the fiber physical properties such as the boiling water shrinkage rate and the peak temperature of the heat shrinkage stress are good, the heat of good quality. It is said that a bonded knitted or knitted product can be obtained.
  • the present invention eliminates the problems of the prior art, has less fuzz generation in high-order processes, is excellent in high-order passage even in applications with high quality requirements such as tricot use, and the woven or knitted fabric after heat bonding has strength, dimensions Provided is a heat-adhesive core-sheath composite fiber that is excellent in stability and durability and excellent in quality as a flow passage material for a liquid filtration membrane.
  • a core-sheath type composite fiber having a polyester having a melting point of 250 ° C. or higher as a core, a melting point of 215 ° C. or higher and a polyester having a melting point 20 to 35 ° C. lower than that of the polyester constituting the core.
  • the present invention there is little fluffing in a high-order process, excellent high-order passability even in applications with high quality requirements such as tricot use, and the woven or knitted fabric after heat bonding has strength, dimensional stability, and durability. It is possible to provide a heat-bondable core-sheath composite fiber that is excellent and excellent in quality as a flow passage material for a liquid filtration membrane.
  • FIG. 1 shows an example of a single yarn cross-sectional shape of a heat-adhesive core-sheath composite fiber preferably used in the present invention.
  • FIG. 2 is an example of a single yarn cross-sectional shape of the thermoadhesive core-sheath conjugate fiber of the present invention, and is a view for explaining the cross-sectional eccentricity.
  • the core-sheath type composite fiber of the present invention is composed of a polyester having a melting point of the core component of 250 ° C. or higher, a polyester having a melting point of 215 ° C. or higher, and 20 to 35 ° C. lower than the melting point of the polyester constituting the core.
  • the spinning temperature can be increased to such an extent that the strength and elongation characteristics of the polyester can be maximized, and the strength and durability when used as a fabric are excellent.
  • the melting point of the core component polyester is preferably 270 ° C. or less from the practical upper limit. It is preferable that the melting point of the core component polyester is 270 ° C. or lower because it is not necessary to perform spinning at an extremely high temperature and spinning can be performed using a general-purpose melt spinning apparatus. More preferably, it is 253 degreeC or more and 260 degrees C or less.
  • the melting point of the sheath component polyester is 215 ° C or higher, preferably 250 ° C or lower. It is preferable that the melting point of the sheath component polyester is 250 ° C. or lower because a general-purpose apparatus can be used when the fabric is thermally bonded, and fuming caused by the oil component in the thermal bonding treatment can be suppressed. More preferably, it is 220 degreeC or more and 235 degreeC or less.
  • the thermal bonding temperature of the fabric can be made sufficiently lower than the melting point of the core component polyester, It can be a durable fabric. Further, by setting the difference in melting point to 35 ° C.
  • the spinning temperature can be set to a temperature that maximizes the strength of the core component polyester and suppresses the thermal degradation of the sheath component polyester as much as possible. This is a composite fiber that is superior in quality and excellent in quality with little raw yarn fluff.
  • the difference in melting point between the sheath component polyester and the core component polyester is preferably 23 ° C. or higher and 30 ° C. or lower.
  • the softening temperature of the core component polyester is preferably 245 ° C. or higher, and the softening temperature of the sheath component polyester is preferably 205 ° C. or higher. It is preferable that the softening temperature of the core component polyester is 245 ° C. or higher because when the fabric is heat-bonded at the melting point or higher of the sheath component polyester, the dimensional change is small and the fabric form is stable.
  • the softening temperature of the core component polyester is more preferably 250 ° C. or higher.
  • the upper limit temperature of the softening temperature of the core component polyester is practically 270 ° C.
  • the softening temperature of the sheath component polyester is 205 ° C. or higher because there is no fusion to the heater during heat setting in the processing step, and the high-speed passage is stable.
  • the softening temperature of the sheath component polyester is more preferably 215 ° C. or higher.
  • any polyester can be selected as long as the melting point is within the above range, but polyethylene terephthalate (hereinafter referred to as PET) is preferable from the viewpoint of dimensional stability and strong elongation characteristics.
  • PET is a polyester obtained using terephthalic acid as the main acid component and ethylene glycol as the main glycol component.
  • the core component polyester may appropriately include a copolymer component as long as the melting point is within the above-described range.
  • Examples of the copolymerizable compound include PET, dicarboxylic acids such as isophthalic acid, succinic acid, cyclohexanedicarboxylic acid, adipic acid, dimer acid, sebacic acid, 5-sodium sulfoisophthalic acid, ethylene glycol, diethylene glycol, 2 , 2-dimethyl-1,3-propanediol, butanediol, neopentyl glycol, cyclohexanedimethanol, polyethylene glycol, polypropylene glycol, bisphenol A ethylene oxide adduct, and the like.
  • dicarboxylic acids such as isophthalic acid, succinic acid, cyclohexanedicarboxylic acid, adipic acid, dimer acid, sebacic acid, 5-sodium sulfoisophthalic acid, ethylene glycol, diethylene glycol, 2 , 2-dimethyl-1,3-propanediol
  • the PET is a homo-PET comprising 100% repeating units of ethylene terephthalate. If necessary, inorganic fine particles such as titanium dioxide as a matting agent and silica fine particles as a lubricant may be added.
  • any polyester can be selected as long as the melting point is within the above-mentioned range, but in addition to PET, polytrimethylene terephthalate and polybutylene terephthalate are preferable.
  • PET polytrimethylene terephthalate
  • PET polybutylene terephthalate
  • an arbitrary copolymer component can be added at an arbitrary ratio as long as the melting point is within the above-mentioned range.
  • the copolymer PET is composed of 70% by mole or more of ethylene terephthalate repeating units, Moderate crystallinity can be imparted, and spinning operability is stabilized.
  • a copolymerized PET composed of ethylene terephthalate repeating units. Even when a polymer other than PET is used as the sheath component polyester, a copolymer component can be appropriately added within a range that does not impair the raw yarn productivity and the quality of the fabric after the thermal bonding treatment.
  • a copolymerization component arbitrary components, such as the above-mentioned copolymerization component, can be copolymerized.
  • inorganic fine particles such as titanium dioxide as a matting agent and silica fine particles as a lubricant may be added as needed, regardless of the polymer species selected.
  • the intrinsic viscosity (hereinafter referred to as IV) of the composite fiber is preferably 0.55 to 0.75.
  • IV the intrinsic viscosity
  • the IV is 0.55 or more, the degree of polymerization is not too low, and it is preferable because the toughness sufficient for the composite fiber to withstand practical use can be achieved.
  • the IV is 0.75 or less, the IV is not too high at the time of spinning, there is no need to perform extreme high temperature spinning, the increase in the amount of COOH during melt spinning can be suppressed, and melt fracture may occur. This is preferable because a uniform composite fiber is obtained and the toughness is not lowered. More preferably, IV is in the range of 0.60 to 0.70.
  • FIG. 1 is a schematic cross-sectional view of a core-sheath type composite fiber of the present invention, which shows a core-sheath type composite fiber 10 in which a core component 1 is surrounded by a sheath component 2.
  • the cross-sectional shape of the composite fiber is not particularly limited as long as the high melting point component is disposed in the core portion and the low melting point component is disposed in the sheath shape covering the core portion, but the sheath component completely covers the core component, and the core component It is preferable that there is no exposure.
  • the eccentricity of the center of gravity of the core component with respect to the center of gravity of the entire composite fiber is preferably 5% or less in the cross section of the composite fiber.
  • An eccentricity of 5% or less is preferable because a coil-like crimp does not appear even if the combination of the core component and the sheath component is a combination that causes a shrinkage difference, and the fabric quality is excellent. More preferably, the eccentricity is 1% or less.
  • the cross-sectional outer peripheral shape of the composite fiber is preferably a substantially circular shape having a flatness expressed by A / B of 1.1 or less, where A is the major axis and B is the minor axis.
  • A is the major axis
  • B is the minor axis.
  • the content of the inorganic particles contained in the core component is preferably 3.0% by weight or less because the toughness is improved, and more preferably 0.5% by weight or less.
  • the content of the inorganic fine particles contained in the sheath component is preferably 0.05% by weight or more because process passability is improved. More preferably, the content of the inorganic fine particles contained in the sheath component is 0.05% by weight or more and 0.5% by weight or less without excessive wear of the guide during the process, when used as a flow path material, It is preferable because unnecessary inorganic particles are not dropped off.
  • the inorganic fine particles are preferably titanium oxide from the viewpoint of process passability as a composite fiber.
  • the total fineness is preferably 30 dtex or more. By setting the total fineness to 30 dtex or more, sufficient strength and rigidity can be ensured even by heat bonding treatment, and when used as a flow path material, a sufficient amount of permeate flows even if water pressure acts. Can be secured.
  • the total fineness is preferably 90 dtex or less, more preferably 40 dtex or more. By setting the total fineness to 90 dtex or less, the fabric can be thinned, and when used as a flow path material, the number of layers per unit formed by bonding the filtration membrane and the flow path material can be increased.
  • the single yarn fineness of the composite fiber is preferably 3.0 dtex or less.
  • the single yarn fineness is preferably 0.7 dtex or more, and more preferably 1.5 dtex or more and 2.5 dtex or less. By setting the single yarn fineness to 0.7 dtex or more, there is little yarn unevenness and raw yarn fluff, and stable yarn production is possible. It is preferable because an appropriate rigidity can be obtained.
  • the strength of the composite fiber is 3.8 cN / dtex or more, and the elongation is 35% or more.
  • the strength is high when used as a fabric, and the durability when used as a flow path material is excellent.
  • the practical upper limit is a strength of 7.0 cN / dtex.
  • the elongation is 35 to 50%. A woven or knitted fabric obtained by setting the elongation to 50% or less is preferable because of excellent dimensional stability.
  • the Worcester unevenness U% which is an index of thickness unevenness in the fiber longitudinal direction of the composite fiber, is 1.4% or less.
  • Wooster spots U% of 1.4% or less is preferable because the surface of the fabric after thermal bonding becomes smooth and a uniform channel can be formed when used as a channel material. More preferably, the Wooster plaque U% is 1.0% or less.
  • the dry heat shrinkage of the composite fiber is preferably 20% or less. It is preferable to set the dry heat shrinkage rate to 20% or less because dimensional changes due to thermal bonding treatment can be suppressed.
  • the practical lower limit is a dry heat shrinkage of 2.0%.
  • a preferred yarn production method for achieving the object of the present invention will be described.
  • the die used for the melt spinning method of the heat-adhesive core-sheath composite fiber of the present invention an existing composite spinning die can be used.
  • Examples of the melting method include a method using a pressure melter and a method using an extruder, but melting using an extruder is preferable from the viewpoint of efficiency and suppression of decomposition.
  • the melting temperature is preferably set to 10 to 40 ° C. higher than the melting point of the polymer used.
  • a preferable spinning temperature is 280 to 295 ° C. More preferably, the spinning temperature is 285 ° C to 293 ° C. By adopting such a spinning temperature, it is possible to obtain a composite fiber having high toughness and good spinning properties.
  • a heater may be provided under the base.
  • both the core component and sheath component are melted and kneaded separately, precisely discharged and weighed through a heating zone, passed through a filtration layer supplemented with foreign matter, and discharged and formed into a core and sheath using a composite die. ⁇ Cooled.
  • the polymer residence time which is the transit time from melting to ejection, is within 30 minutes, thermal degradation of the polymer can be reduced, IV reduction can be suppressed, and yarn toughness reduction can be prevented.
  • the polymer residence time is 20 minutes or less.
  • the die surface temperature is preferably 270 ° C. or higher and 290 ° C. or lower.
  • the base surface temperature is preferably 270 ° C. or higher, the core component characteristics can be maximized, and a yarn excellent in high elongation can be obtained.
  • the die surface temperature is preferably 290 ° C. or less, an increase in yarn breakage due to deposition of polymer hydrolyzate directly under the die is suppressed, and this is preferable because it is excellent in raw yarn productivity.
  • the core-sheath type composite fiber of the present invention is not only a two-step method in which the discharged polymer is once wound up as an undrawn yarn and then drawn, as well as a direct spinning drawing method or a high-speed spinning method in which spinning and drawing steps are continuously performed. It can be produced by any one-step method.
  • the stretching temperature is preferably 60 ° C. or higher and 100 ° C. or lower, which is near the glass transition temperature of the undrawn yarn. Uniform stretching can be achieved by setting the stretching temperature to 60 ° C. or higher, and productivity deterioration due to fusion to a stretching roll or spontaneous elongation of fibers can be prevented by setting the stretching temperature to 100 ° C. or lower. More preferably, the stretching temperature is 75 ° C. or higher and 95 ° C. or lower.
  • heat-set at a temperature at which the crystal speed of the undrawn yarn is maximized, and it is preferably set to 110 ° C. or higher and 180 ° C. or lower.
  • Heat setting at 110 ° C. or higher is preferable because it can not only promote fiber crystallization and increase strength, but also stabilize various yarn properties such as shrinkage stress and dry heat shrinkage.
  • Intrinsic viscosity (IV) ⁇ r of the definition formula is obtained by dissolving 0.8 g of a sample in 10 mL of O-chlorophenol (OCP) having a purity of 98% or more, and obtaining the relative viscosity ⁇ r using an Ostwald viscometer at a temperature of 25 ° C. according to the following formula: Intrinsic viscosity (IV) was calculated.
  • OCP O-chlorophenol
  • IV 0.0242 ⁇ r + 0.2634 [ ⁇ : viscosity of polymer solution, ⁇ 0: OCP viscosity, t: solution drop time (second), d: solution density (g / cm 3 ), t0: OCP drop time (second), d0: OCP Density (g / cm 3 )].
  • the amount of permeated liquid after 5 days was measured, and the amount of fresh water produced per day was calculated. Based on the results of the test, the following evaluation points were used. 3 points: Magnesium sulfate salt removal rate of 99.8% or more and water production amount of 45 m 3 / day or more 2 points: Magnesium sulfate salt removal rate of 99.8% or more and water production amount of 40 m 3 / day or more of 45 m 3 / Day or the removal rate of magnesium sulfate salt is 99.0% or more and less than 99.8% and the amount of water produced is 45 m 3 / day or more 1 point: The removal rate of magnesium sulfate salt is 99.0% or more and 99.8% %, And the amount of water produced is 40 m 3 / day or more and less than 45 m 3 / day 0 point: The removal rate of magnesium sulfate salt is less than 99.0%, or the amount of water produced is less than 40 m 3 / day.
  • Example 1 A homo-PET polymer of IV0.67 containing no titanium oxide (high melting point component, melting point 255 ° C.) and isophthalic acid and bisphenol A ethylene oxide adduct as the copolymer component are each 7.1 mol% based on the total acid component, A copolymerized PET polymer (low melting point component, melting point 230 ° C.) having a titanium oxide content of 0.05 wt% and IV 0.65 copolymerized with 4.4 mol% was prepared, and the high melting point component was 285 ° C. with an extruder.
  • the low melting point component was melted at 260 ° C with an extruder, the spinning temperature was set at 290 ° C, weighed with a metering pump, filtered in a pack, and then with a nozzle nozzle as shown in FIG. It was discharged into a core-sheath composite type having a composite area ratio of 65:35 so that the cross-sectional shape of the concentric circular core-sheath was as follows (the cross-sectional eccentricity was 0% and the cross-sectional flatness was 1.0). At this time, it arrange
  • a direct spinning method (DSD) is used which is consistently performed from drawing to winding, and the discharged polymer is set at a speed of 1728 m / min and a surface temperature of 85 ° C. through the cooling part and the oiling part. Then, the film was taken up by a take-up roll (first HR) and continuously drawn up to a heat treatment roll (second HR) set to 128 ° C. at 4489 m / min without being wound up, and stretched 2.6 times.
  • first HR take-up roll
  • second HR heat treatment roll
  • the tension of the stretched and heat-treated yarns is adjusted with godet rollers (3rd GR and 4GR) set to speeds of 4549 m / min and 4584 m / min, respectively, and the tension is 0.20 cN / dtex at a speed of 4500 m / min.
  • the cheese-like package was wound up to obtain a core-sheath type composite fiber of 56 dtex-24 filaments.
  • the evaluation results for the obtained fibers are shown in Table 1.
  • the Wooster spot U% was 0.4%
  • the boiling water shrinkage was 10.3%
  • the dry heat shrinkage was 17.2%.
  • Examples 2 to 4 and Comparative Examples 1 to 3 In Examples 2 to 4 and Comparative Examples 1 to 3, the melting points of the core component polyester and the sheath component polyester were changed using the copolymer components used in the sheath component of Example 1, respectively. In accordance with Example 1, except that an appropriate spinning temperature was adopted. The evaluation results are shown in Table 1.
  • Example 5 was the same as Example 1 except that the spinning machine was changed from DSD to the two-step method and the spinning conditions were adjusted accordingly. The evaluation results are shown in Table 1.
  • Examples 6-7 Examples 6 to 7 were the same as Example 1 except that the shape of the discharge hole of the base was changed and the cross-sectional shape and the eccentricity of the core sheath were changed as shown in Table 2. The evaluation results are shown in Table 2.
  • Examples 8-11 Examples 8 to 11 were the same as Example 1 except that the fineness of the composite fiber and the number of filaments were changed as shown in Table 2. The evaluation results are shown in Table 2.
  • Examples 12-14 Example 12 to 14 were the same as Example 1 except that the amount of titanium oxide added to the core component polyester and the sheath component polyester was changed as shown in Table 3. The evaluation results are as shown in Table 3.
  • Examples 15-17 Example 15 to 17 were the same as Example 1 except that the discharge amounts of the core component polyester and the sheath component polyester were changed to the core: sheath ratio as shown in Table 3. The evaluation results are as shown in Table 3.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Multicomponent Fibers (AREA)
  • Knitting Of Fabric (AREA)
  • Woven Fabrics (AREA)

Abstract

L'invention fournit les fibres composites thermocollantes à âme enrobée qui présentent peu de risque d'apparition de peluches lors d'un processus d'ordre supérieur, qui sont dotées d'excellentes propriétés de passage à un ordre supérieur, y compris dans une application nécessitant un haut niveau de qualité, telle qu'une application au tricot, ou similaire, qui présentent d'excellentes propriétés de résistance, de stabilité dimensionnelle et de durabilité d'un article tissé/tricoté après thermocollage, et qui se révèlent excellentes en tant que matériau de passage pour membrane de filtration de liquide. Plus précisément, l'invention concerne des fibres composites à âme enrobée ayant pour partie âme un polyester de point de fusion supérieur ou égal à 250°C, et ayant pour partie enrobage un polyester de point de fusion supérieur ou égal à 215°C et inférieur de 20 à 35°C par rapport à celui du polyester constituant la partie âme. Ces fibres composites thermocollantes à âme enrobée sont caractéristiques en ce que leur résistance est supérieure ou égale à ３,８ｃＮ／ｄｔｅｘ, et leur extensibilité est supérieure ou égale à 35%.
PCT/JP2018/003927 2017-02-09 2018-02-06 Fibres composites thermocollantes à âme enrobée, et tricot chaîne Ceased WO2018147251A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US16/481,928 US20200040484A1 (en) 2017-02-09 2018-02-06 Thermally adhesive sheath-core conjugate fiber and tricot fabric
CN201880010784.2A CN110268109B (zh) 2017-02-09 2018-02-06 热粘接性芯鞘型复合纤维以及经编针织物
JP2018513569A JP6610778B2 (ja) 2017-02-09 2018-02-06 熱接着性芯鞘型複合繊維およびトリコット編み地
KR1020197017284A KR102502868B1 (ko) 2017-02-09 2018-02-06 열접착성 심초형 복합 섬유 및 트리코트 편지

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JP2017022048 2017-02-09
JP2017-022048 2017-02-09

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WO2018147251A1 true WO2018147251A1 (fr) 2018-08-16

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US (1) US20200040484A1 (fr)
JP (1) JP6610778B2 (fr)
KR (1) KR102502868B1 (fr)
CN (1) CN110268109B (fr)
WO (1) WO2018147251A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
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JP2020058999A (ja) * 2018-10-12 2020-04-16 株式会社クボタ 膜エレメントおよび膜分離機器
JP2020062598A (ja) * 2018-10-17 2020-04-23 株式会社クボタ 膜エレメント、膜分離機器および膜エレメントの製造方法
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