WO2024185439A1 - ポリエステル複合繊維及びポリエステル仮撚加工糸、並びにそれらの製造方法 - Google Patents

ポリエステル複合繊維及びポリエステル仮撚加工糸、並びにそれらの製造方法 Download PDF

Info

Publication number
WO2024185439A1
WO2024185439A1 PCT/JP2024/005206 JP2024005206W WO2024185439A1 WO 2024185439 A1 WO2024185439 A1 WO 2024185439A1 JP 2024005206 W JP2024005206 W JP 2024005206W WO 2024185439 A1 WO2024185439 A1 WO 2024185439A1
Authority
WO
WIPO (PCT)
Prior art keywords
polyester
fiber
composite fiber
dtex
yarn
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/JP2024/005206
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
泰之 米田
暢亮 尾形
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 Frontier Co Ltd
Original Assignee
Teijin Frontier Co 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 Frontier Co Ltd filed Critical Teijin Frontier Co Ltd
Priority to KR1020257032165A priority Critical patent/KR20250155584A/ko
Priority to JP2025505178A priority patent/JPWO2024185439A1/ja
Priority to EP24766811.4A priority patent/EP4678793A1/en
Priority to CN202480016272.2A priority patent/CN120731301A/zh
Publication of WO2024185439A1 publication Critical patent/WO2024185439A1/ja
Anticipated expiration legal-status Critical
Ceased 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
    • 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
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
    • 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
    • D02G1/02—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist
    • 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
    • D02G1/02—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist
    • D02G1/0206—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist by false-twisting
    • D02G1/0213—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist by false-twisting after drawing the yarn on the same machine
    • 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
    • D02G1/02—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist
    • D02G1/0206—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist by false-twisting
    • D02G1/022—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist by false-twisting while simultaneously drawing the yarn
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
    • D02G3/04—Blended or other yarns or threads containing components made from different materials
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
    • D10B2331/04—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyesters, e.g. polyethylene terephthalate [PET]

Definitions

  • the present invention relates to polyester composite fibers and polyester false twist textured yarns, as well as their manufacturing methods. More specifically, the present invention relates to a method for stably providing partially oriented polyester composite fibers with low crystallinity and high elongation, and using the same to perform false twist textured stretching to produce polyester composite fiber false twist textured yarns that have a small initial modulus, high shrink performance even before boiling water treatment, and a small difference in shrink properties before and after boiling water treatment, as well as to the manufacturing methods thereof.
  • Polytrimethylene terephthalate obtained by polycondensation of lower alcohol esters of terephthalic acid, such as terephthalic acid or dimethyl terephthalate, with trimethylene glycol (1,3-propanediol), is a revolutionary polymer in that fibers made from it have properties similar to polyamide, such as a low elastic modulus (soft feel), excellent elastic recovery, and easy dyeability, and performance similar to polyethylene terephthalate (hereinafter sometimes referred to as "PET”) fibers, such as light resistance, heat setting, dimensional stability, and low water absorption. Taking advantage of these characteristics, it is used in BCF carpets, brushes, tennis strings, etc.
  • PTT Polytrimethylene terephthalate
  • Patent Document 2 discloses that a false-twisted yarn of PTT composite fiber with excellent stretchability and high fabric quality can be obtained by false-twisting and heat-setting a side-by-side or eccentric sheath-core composite fiber drawn yarn made of two types of PTT with different intrinsic viscosities; however, the shrinkage is reduced by heat-setting, and this fiber also does not have sufficient stretchability.
  • the present invention has been made in consideration of the above background, and its purpose is to provide a polyester composite fiber and processed yarn that have a small initial elastic modulus, high shrinkage performance even before boiling water treatment, and a small difference in shrinkage properties before and after boiling water treatment, as well as a manufacturing method thereof.
  • a polyester conjugated fiber in which polyesters having different intrinsic viscosities are bonded together over the entire length of the fiber in a side-by-side type, bonded type, or eccentric core-sheath type, the conjugated fiber being characterized in that it simultaneously satisfies the following requirements (a) to (d): (a) The ratio of the heat of crystallization of the composite fiber during heating is 10% to 60% of that of a completely amorphous state. (b) The breaking elongation of the composite fiber is 60 to 200%.
  • a method for producing a polyester conjugate fiber comprising melting and discharging polyesters having different intrinsic viscosities into a conjugate fiber formed by bonding the polyesters together in a side-by-side type, a bonded type, or an eccentric core-sheath type over the entire length of the fiber, and then winding the fiber around a first heating roller having a temperature ranging from -30°C of the glass transition point of the polyester component having a lower glass transition point to +30°C of the polyester component having a higher glass transition point at a winding speed of 1000 to 3000 m/min, further heating and stretching the fiber with the first heating roller, winding the fiber around a second heating roller having a temperature of 30 to 120°C, and then winding the fiber around a speed of 2000 to 3300 m/min; 4.
  • the present invention it is possible to stably provide partially oriented polyester composite fibers with low crystallinity and high elongation, and by using the fibers for stretch-twist processing, it is possible to provide polyester false-twist processed yarns that have a small initial elastic modulus, high shrink performance even before boiling water treatment, and a small difference in shrink properties before and after boiling water treatment, resulting in a fiber structure with excellent stretchability.
  • FIG. 2 is a cross-sectional view illustrating an example of the cross-sectional shape of the conjugate fiber of the present invention.
  • Polymer raw material Suitable polymers for achieving the object of the present invention include polyethylene terephthalate, polyethylene naphthalate, polybutylene terephthalate, polytrimethylene terephthalate, polylactic acid, and thermoplastic polyester elastomers.
  • a high molecular weight polymer can be used as the first component and a low molecular weight polymer can be used as the second component, or the first component can be a homopolymer and the second component can be a copolymer, so that polyesters with different intrinsic viscosities can be used.
  • polytrimethylene terephthalate it is preferable to use a polymer containing 90 mol% or more of polytrimethylene terephthalate as one of the components. Furthermore, it is even more preferable to use the polytrimethylene terephthalate copolymer shown below, since it has an excellent balance between shrinkage characteristics and heat resistance.
  • the polytrimethylene terephthalate polymer is copolymerized with acid components such as isophthalic acid, succinic acid, adipic acid, 2,6-naphthalenedicarboxylic acid, and 5-sulfoisophthalic acid tetrabutylphosphonium salt, glycol components such as 1,4-butanediol, 1,6-hexanediol, and cyclohexanedimethanol, ⁇ -caprolactone, 4-hydroxybenzoic acid, polyoxyethylene glycol, and polytetramethylene glycol in an amount of less than 10 mass%.
  • acid components such as isophthalic acid, succinic acid, adipic acid, 2,6-naphthalenedicarboxylic acid, and 5-sulfoisophthalic acid tetrabutylphosphonium salt
  • glycol components such as 1,4-butanediol, 1,6-hexanediol, and cyclohexane
  • the above polymers may be copolymerized or mixed with various additives, such as matting agents, heat stabilizers, defoamers, color-matching agents, flame retardants, antioxidants, ultraviolet absorbers, infrared absorbers, crystal nucleating agents, and fluorescent whitening agents, if necessary.
  • additives such as matting agents, heat stabilizers, defoamers, color-matching agents, flame retardants, antioxidants, ultraviolet absorbers, infrared absorbers, crystal nucleating agents, and fluorescent whitening agents, if necessary.
  • the intrinsic viscosity [ ⁇ ] is 0.5 to 1.6, preferably 0.6 to 1.5. More preferably, it is 0.7 to 1.4. If the intrinsic viscosity is less than 0.5, the molecular weight of the polymer is too low, making it difficult to achieve strength. Conversely, if the intrinsic viscosity exceeds 1.6, the low fluidity impairs the spinnability of the low-viscosity polytrimethylene terephthalate, which may cause thread breakage during spinning, and is therefore undesirable.
  • the polyester polymer used as the second component is preferably a polyester polymer such as polyethylene terephthalate, polybutylene terephthalate, low molecular weight or copolymerized polytrimethylene terephthalate, polytetramethylene terephthalate, or a copolymer thereof.
  • additives such as antistatic agents, flame retardants, heat resistance agents, weather resistance agents, titanium oxide, etc.
  • polyester conjugate fiber of the present invention it is necessary that the polymers of the first and second components are in close contact with each other and bonded together over the entire length of the fiber.
  • the manner in which the two components are arranged is not particularly limited, and various fiber cross sections may be used, such as a side-by-side type as shown in Figure 1, a bonded type, or an eccentric core-sheath type.
  • the polyester composite fiber of the present invention can be produced by a conventionally known composite spinning method in which polyesters having different intrinsic viscosities are extruded from a spinning hole such that the polyesters are melted and extruded into a composite fiber in which the polyesters are bonded together over the entire length of the fiber in a side-by-side, bonded, or eccentric core-sheath manner.
  • the two types of polyesters may also be extruded in an equal volume ratio, or the ratio of each component may be changed as appropriate.
  • the ratio of the two components to be compositely spun is preferably in the range of 30-70/70-30. More preferably, it is 40-60/60-40.
  • the crimpability is improved, but the strength of the composite fiber may decrease.
  • the polytrimethylene terephthalate component is less than 30%, the crimpability may be insufficient.
  • the difference in melt viscosity between the first and second components is preferably 200 poise (measured at 290°C and a shear rate of 7780 cm-1) or more and 3000 poise or less. More preferably, it is 250 to 2500 poise, and even more preferably, 300 to 2000 poise. If the viscosity difference is less than 200 poise, crimping may not occur, and if it is more than 3000 poise, problems with operability may occur due to the kneeing phenomenon in which the yarn is bent toward the side with the higher melt viscosity directly below the nozzle hole when two components with different melt viscosities are composite spun directly below the nozzle hole.
  • One method of preventing kneeing is to manipulate the spinneret holes, but as shown in British Patent No. 965729, for example, a method in which the spinneret holes are bent in advance in the direction opposite to the kneeing direction and the polymer is discharged vertically from the spinneret surface is also effective in producing the polyester composite fiber of the present invention.
  • the manufacturing method of the polyester composite fiber is described in more detail below.
  • the chips are dehumidified to a moisture content of 0.01% by mass or less using a chip drying device known in the conventional manufacture of polyester composite fibers, and the molten polymer is then passed through a melt extruder such as an extruder or a silver plate melter, extruded from a spinneret with a nozzle having the same number of nozzles as the target number of filaments, and cooled and solidified by blowing cooling air under the spinneret, while being taken up by a gotted roller and wound onto a bobbin by a winder.
  • a melt extruder such as an extruder or a silver plate melter
  • the polyester composite fiber is wound at a winding speed of 1000 to 3000 m/min around a first heating roller whose temperature is between -30°C (the glass transition point of the polyester component having the lower glass transition point) and +30°C (the glass transition point of the polyester component having the higher glass transition point), and while being further heated by the first heating roller, the fiber is stretched 1.0 to 3.0 times, and then wound around a second heating roller whose temperature is 30 to 120°C, and then wound at a speed of 2000 to 3300 m/min to obtain a partially oriented yarn of the polyester composite fiber.
  • a first heating roller whose temperature is between -30°C (the glass transition point of the polyester component having the lower glass transition point) and +30°C (the glass transition point of the polyester component having the higher glass transition point)
  • the fiber is stretched 1.0 to 3.0 times, and then wound around a second heating roller whose temperature is 30 to 120°C, and then wound at a speed of 2000 to 3300 m/min to obtain a partially oriented yarn of
  • polyester composite fibers containing polytrimethylene terephthalate that has solidified after melting are wound at a speed slower than 1000 m/min, not only is production efficiency poor, but the draw ratio becomes too high, causing excessive crystallization of the orientation, and even if the fibers are subsequently subjected to draw-twist processing, the shrinkage does not increase.
  • polyester composite fibers are wound at a speed faster than 3,000 m/min, the elongation becomes too low, making the fibers more susceptible to fuzzing and yarn breakage during spinning and false twist processing. In addition, shrinkage becomes small when false twist processing is performed.
  • the yarn will have excessively large unevenness, and fuzz and yarn breakage will be more likely to occur during spinning or false twist processing.
  • the fiber is stretched at a temperature higher than the glass transition point of the polyester component with a higher glass transition point +30°C, the composite fiber will have too high an oriented crystallization, and even if the fiber is subsequently stretched and false twist processed, the shrinkage will not increase.
  • the polyester composite fiber After the polyester composite fiber is stretched, it must be wound around a second heated roller at 30°C to 120°C. If the fiber is wound around a heated roller at a temperature lower than 30°C, the orientation crystallization does not progress, and if the fiber is stored at around room temperature, it becomes brittle, making it difficult to handle and to perform false-twist processing. On the other hand, if the fiber is wound around a second heated roller at a temperature higher than 120°C, the yarn stretches and yarn swaying causes large yarn unevenness. Furthermore, the orientation crystallization of the obtained yarn is too high, and even if the fiber is subsequently subjected to false-twist processing, the crimp does not increase.
  • the polyester composite fiber is wound up after being stretched through a heated roller. If the winding speed is less than 2000 m/min, the fiber orientation is low, and if the fiber is stored at around room temperature, it becomes brittle, making it difficult to handle and to perform false-twist processing. On the other hand, if the winding speed exceeds 3300 m/min, the elongation becomes too low, making it prone to fuzzing and yarn breakage during spinning and false-twist processing. Furthermore, shrinkage becomes small when false-twist processing is performed.
  • the polyester composite fiber obtained by the above method has a moderate degree of crystallization, so it is less likely to become curled due to the relaxation of strain in the polymer, and changes over time are minimal, making it preferable.
  • the breaking elongation of polyester conjugate fibers must be 60 to 200% or less. If the breaking elongation is less than 60%, the elongation is too low, and fuzz and yarn breakage are likely to occur during spinning and false twisting. On the other hand, if the breaking elongation exceeds 200%, the degree of fiber orientation is too low, and the fibers are prone to change over time, and even when stored at room temperature, they become very brittle. For this reason, it becomes impossible to stably obtain false twisted yarns of industrially consistent quality.
  • the breaking elongation is preferably in the range of 70 to 180%, more preferably 75 to 150%.
  • Silk factor (breaking strength x elongation 1/2 )
  • the silk factor (strength x ⁇ elongation), which indicates the toughness of polyester composite fiber yarn, must be 10 or more. It is more preferably 13 or more, and even more preferably 15 or more. If the silk factor is less than 10, yarn breakage occurs during draw-twisting.
  • the peak temperature of thermal stress of a polyester conjugated fiber needs to be equal to or lower than Tg+50° C. of the polyester component having the higher glass transition point (Tg) among the polyester components constituting the conjugated fiber. If the peak temperature is higher than Tg+50° C. of the polyester component having the higher glass transition point (Tg) among the polyester components constituting the conjugated fiber, the degree of crystallization will be too high, and even if it is used as a false twist textured yarn, crimp will not be expressed and soft stretchability will not be obtained.
  • the peak value of the thermal stress must be 0.05 to 0.8 cN/dtex. A more preferable peak value is 0.06 to 0.7 cN/dtex, and the most preferable peak value is 0.07 to 0.6 cN/dtex. If the peak value of the thermal stress is less than 0.05 cN/dtex, the tension during false twist processing will be lower and shrinkage will be smaller. On the other hand, if the peak value of the thermal stress is greater than 0.8 cN/dtex, the tension during false twist processing will be too high, which may cause yarn breakage or loss of softness.
  • the false twist textured yarn made of the polyester conjugate fiber of the present invention which has a small initial elastic modulus, high crimp performance even before boiling water treatment, and has a small difference in the crimp properties before and after boiling water treatment, can be obtained by subjecting a partially oriented yarn of the above-mentioned polyester conjugate fiber to draw-twist processing.
  • the above-mentioned polyester conjugate fiber can be false-twisted under the following conditions to obtain the desired polyester false-twist textured yarn.
  • False twist machine type TMT Machinery HTS-15V (disk false twist method) Disk rotation speed: 1000-20000 rpm (disk diameter 3-10 cm) Feed speed: 500 to 1000 m/min First feed rate: -5.0 to +5.0% First heater temperature (non-contact type): 200-300°C Second heater temperature (non-contact type): 150 to 250°C Second feed nip roller speed: 600 to 1500 m/min Second feed rate: -5.0 to +5.0% Feed rate before winding: -5.0 to +5.0%
  • the polyester false twisted yarn obtained by the above method has high shrinkage performance even before boiling water treatment, and the difference in shrinkage properties before and after boiling water treatment is small.
  • this false twisted yarn is used to make fabric, a soft, highly elastic fabric is obtained, and the fabric exhibits appropriate stretch.
  • it can be dyed with ordinary polyester disperse dyes.
  • Fabrics made using the polyester composite fiber or polyester false twisted yarn of the present invention do not feel tight when bending elbows or knees or stretching arms, and can be used as core yarns for clothing materials that are very comfortable to wear. Therefore, it is extremely useful for applications such as outerwear, linings, and sports.
  • the total fineness of the polyester false twist textured yarn obtained by the above method is preferably 10 to 200 dtex or less, and the tensile breaking strength is preferably 2.0 cN/dtex or more.
  • Elastic modulus at 2% elongation is 10 cN/dtex or less
  • the elastic modulus of polyester false twist textured yarn at 2% elongation must be 10 cN/dtex or less.
  • the elastic modulus at 2% elongation is more preferably 8 cN/dtex or less. If the elastic modulus at 2% elongation is higher than 10 cN/dtex, the shrinkage that occurs before boiling water treatment is small, and stretchability cannot be obtained.
  • Vc apparent crimp percentage
  • Polyester false twist textured yarn was wound around a skein frame under a tension of 0.044 cN/dtex to create a skein of approximately 3300 dtex. Two loads of 0.00177 cN/dtex and 0.177 cN/dtex were applied to one end of this skein, and the length S0 (cm) after one minute was measured.
  • Tc latent crimp percentage of the polyester false twist textured yarn measured by the following method must be within the range of 30% ⁇ Tc ⁇ 70% (30 to 70%).
  • Tc measurement conditions A sample of polyester false twist textured yarn was wound around a skein frame under a tension of 0.044 cN/dtex to create a skein of about 3300 dtex. Two loads of 0.00177 cN/dtex and 0.177 cN/dtex were applied to one end of the skein, and the length S2 (cm) after 1 minute was measured. Next, the skein was treated in boiling water at 100°C for 20 minutes with the load of 0.177 cN/dtex removed from the skein.
  • the load of 0.00177 cN/dtex was removed from the skein, and the skein was naturally dried in a free state without load for 24 hours, and the loads of 0.00177 cN/dtex and 0.177 cN/dtex were applied to the skein again, and the length S3 (cm) after 1 minute was measured.
  • the load of 0.177 cN/dtex was removed from the skein, and the length S4 after 1 minute was measured.
  • Vc-Tc Furthermore, for polyester false twist textured yarn, the above Vc and Tc must satisfy the relationship given by the following formula. -20% ⁇ Vc-Tc ⁇ 20% If Vc-Tc is smaller than -20%, the occurrence of crimp due to boiling water treatment becomes large, the yarn shrinks due to the occurrence of crimp, and the fabric has a hard texture when made into a fabric. If Vc-Tc is larger than 20%, the settling of the crimp due to boiling water treatment becomes large, and the stretchability of the yarn is also lost.
  • a fiber structure fabric is obtained that is soft, highly elastic, and exhibits moderate stretch.
  • a specific example of a fiber structure is a woven or knitted fabric in which the above-mentioned polyester composite fiber and polyethylene terephthalate high multi-layer yarn having a single yarn of 1 dtex or less are mixed and then the mixed yarn is false-twisted to produce a yarn with high stretchability.
  • the above-mentioned polyester composite fiber and polyethylene terephthalate high multi-layer yarn having a single yarn of 1 dtex or less are layered, with the surface layer being polyethylene terephthalate high multi-layer yarn having a single yarn of 1 dtex or less and the above-mentioned polyester composite fiber being in the middle portion that forms the structure, resulting in a woven or knitted fabric with high stretchability and a soft texture on the surface derived from the high multi-layer yarn.
  • the fiber was heated to a temperature above the melting point of the resin constituting the fiber by 50°C, completely melted, and then quenched with water to create a completely amorphous state.
  • the fiber was then heated again from 30°C at a rate of 10°C/min, and the heat of crystallization peak resulting from the completely amorphous state during heating was measured, and the heat of crystallization during heating was determined as Q2.
  • Example 1 Dimethyl terephthalate and 1,3-propanediol were charged in a molar ratio of 1:2, and titanium tetrabutoxide equivalent to 0.1% by weight of dimethyl terephthalate was added, and the transesterification reaction was completed at normal pressure and a heater temperature of 240°C. Next, titanium tetrabutoxide was further added in an amount of 0.1% by weight of the theoretical polymer amount, and titanium dioxide was added in an amount of 0.5% by weight of the theoretical polymer amount, and the reaction was carried out at 270°C for 3 hours. The intrinsic viscosity of the obtained polytrimethylene terephthalate was 1.0 dl/g. The glass transition point of this polymer was 45°C.
  • this polymer was used to obtain polytrimethylene terephthalate with an intrinsic viscosity of 1.4 dl/g by solid-state polymerization at 180°C under nitrogen for 45 hours.
  • the glass transition point of this polymer was 46°C.
  • the polytrimethylene terephthalate with an intrinsic viscosity of 1.0 dl/g and polytrimethylene terephthalate with an intrinsic viscosity of 1.4 dl/g obtained above were each dried in a hot air dryer at 150°C for 6 hours to reduce the moisture content to 50 ppm, and then each was melted at 265°C and extruded from a spinneret heated to 265°C using a side-by-side cross-section nozzle in a mass ratio of 50:50 through a single-layer arrangement of 24 nozzles with a diameter of 0.3 mm at a total output rate of 14 g/min.
  • the extruded molten multifilament was quenched by blowing air at a speed of 2.0 m/min to convert it into a solid multifilament, after which a 10% water emulsion finishing agent containing 60% by weight of octyl stearate, 15% by weight of polyoxyethylene alkyl ether, and 3% by weight of potassium phosphate was applied using a guide nozzle so that the amount of oil applied to the fiber was 0.6% by weight.
  • the obtained solid multifilament was wound around a first heating roller heated to 50°C and having a peripheral speed of 2200 m/min, and then wound around a second heating roller at 80°C so as to be stretched by 1.2 times, and then wound at a winding speed of 2550 m/min (overfeed rate 4%) using a winder that drives both the spindle and the touch roll, to obtain a cheese-like package wound with 56 dtex/24f polyester composite fiber.
  • the physical properties of the obtained polyester composite fiber are shown in Table 1.
  • Example 2 Polytrimethylene terephthalate with an intrinsic viscosity of 1.0 dl/g and a glass transition point of 45°C and polyethylene terephthalate with an intrinsic viscosity of 0.6 dl/g and a glass transition point of 75°C were melted at 265°C and 285°C, respectively, and extruded from a spinneret heated at 285°C in a ratio of 50:50 at a total output of 19 g/min through a single-arranged spinneret with 24 holes having a diameter of 0.3 mm.
  • the extruded molten multifilament was quenched by blowing air at a speed of 2.0 m/min to turn it into a solid multifilament, and then an oil agent containing 60% by weight of octyl stearyl acid, 15% by weight of polyoxyethylene alkyl ether, and 3% by weight of potassium phosphate was attached to the fiber as a water emulsion finishing agent with a concentration of 10% by weight so that the oil agent adhesion amount was 0.6% by weight.
  • the fiber was then wound around a first heated roller heated to 50° C. and having a peripheral speed of 1,300 m/min, stretched 2.0 times, wound around a second heated roller at 80° C., and then wound at a winding speed of 2,550 m/min (overfeed rate 3%) using a winder that drives both the spindle and the touch roll, to obtain a cheese-like package wound with a polyester conjugated fiber of 75 dtex/24 f.
  • the physical properties of the obtained polyester conjugated fiber are shown in Table 1.
  • the fiber yarn properties of the obtained polyester conjugate fiber are shown in Table 1.
  • polyester false twist textured yarn The physical properties of the obtained polyester false twist textured yarn are shown in Table 2.
  • Example 1 The trimethylene terephthalate having an intrinsic viscosity of 1.0 dl/g and a glass transition point of 45° C. and the trimethylene terephthalate having an intrinsic viscosity of 1.4 dl/g and a glass transition point of 46° C. used in Example 1 were each melted separately, extruded from a 24-hole conjugate spinneret at a spinning temperature of 265° C. in a conjugate ratio (mass%) of 50:50, and temporarily wound up using a winder at a spinning speed of 1,400 m/min to obtain an undrawn yarn of a side-by-side type polyester conjugate fiber having 185 dtex and 24 filaments.
  • the undrawn yarn of the polyester composite fiber was drawn at a hot roller-hot plate drawing machine (yarn contact length: 20 cm, surface roughness: 3S) with a hot roller temperature of 75°C, a hot plate temperature of 170°C, and a draw ratio of 2.2 times, and then, without being taken up once, was continuously relaxed at a draw ratio of 0.9 times and wound up to obtain a drawn yarn of polyester composite fiber with 85 dtex and 24 filaments.
  • the physical properties of the obtained polyester composite fiber are shown in Table 1.
  • Example 2 The trimethylene terephthalate having an intrinsic viscosity of 1.40 dl/g and a glass transition point of 45° C. and the polyethylene terephthalate having an intrinsic viscosity of 0.60 dl/g and a glass transition point of 75° C. used in Example 2 were each melted separately, extruded from a 24-hole conjugate spinneret at a spinning temperature of 275° C. in a conjugate ratio (mass%) of 50:50, and temporarily wound up using a winder at a spinning speed of 1,400 m/min, to obtain an undrawn yarn of a side-by-side type polyester conjugate fiber having 185 dtex and 24 filaments.
  • the undrawn yarn of the polyester composite fiber was drawn at a hot roller-hot plate drawing machine (yarn contact length: 20 cm, surface roughness: 3S) with a hot roller temperature of 75°C, a hot plate temperature of 170°C, and a draw ratio of 3.3 times, and then, without being taken up once, was continuously relaxed at a draw ratio of 0.9 times and wound up, to obtain a drawn yarn of polyester composite fiber of 56 dtex and 24 filaments.
  • the physical properties of the obtained polyester composite fiber are shown in Table 1.
  • the extruded molten multifilament was quenched by blowing air at a speed of 2.0 m/min to convert it into a solid multifilament, after which a 10% water emulsion finishing agent containing 60% by weight of octyl stearate, 15% by weight of polyoxyethylene alkyl ether, and 3% by weight of potassium phosphate was applied using a guide nozzle so that the amount of oil applied to the fiber was 0.6% by weight.
  • the resulting solid multifilament was then wound around a first heated roller heated to 55°C and having a peripheral speed of 2200 m/min, and then wound around a second heated roller at 140°C so as to be stretched 1.7 times, and then wound at a winding speed of 3510 m/min (overfeed rate 6%) using a winding machine that drives both the spindle and the touch roll.
  • the physical properties of the resulting polyester composite fiber are shown in Table 1.
  • Example 4 As in Example 2, trimethylene terephthalate having an intrinsic viscosity of 1.0 dl/g and a glass transition point of 45° C. and polyethylene terephthalate having an intrinsic viscosity of 0.60 dl/g and a glass transition point of 75° C. were used, and melted at 265° C. and 285° C., respectively, and extruded from a spinneret heated to 285° C. in a ratio of 50:50 through a single-layer nozzle having 24 holes with a diameter of 0.3 mm at a total throughput of 19 g/min.
  • the extruded molten multifilament was quenched by blowing air at a speed of 2.0 m/min to convert it into a solid multifilament, after which a 10% water emulsion finishing agent containing 60% by weight of octyl stearate, 15% by weight of polyoxyethylene alkyl ether, and 3% by weight of potassium phosphate was applied using a guide nozzle so that the amount of oil applied to the fiber was 0.6% by weight.
  • the resulting solid multifilament was then wound around a first heated roller heated to 55°C at a speed of 1,400 m/min, and then wound around a second heated roller heated to 170°C so as to be stretched 2.6 times, and then wound at a winding speed of 3,430 m/min (overfeed rate 6%) using a winding machine that drives both the spindle and the touch roll.
  • the physical properties of the resulting polyester composite fiber are shown in Table 1.
  • Example 5 As in Example 1, polytrimethylene terephthalate having an intrinsic viscosity of 1.0 dl/g and a glass transition point of 45° C. and polytrimethylene terephthalate having an intrinsic viscosity of 1.4 dl/g and a glass transition point of 46° C. were separately melted at 265° C., and extruded from a spinneret heated to 265° C. using a side-by-side cross-section die in a ratio of 50:50 through a single-layer spinneret with 24 holes having a diameter of 0.3 mm at a total throughput of 19 g/min.
  • the extruded molten multifilament was quenched by blowing air at a speed of 2.0 m/min to convert it into a solid multifilament, after which a 10% water emulsion finishing agent containing 60% by weight of octyl stearate, 15% by weight of polyoxyethylene alkyl ether, and 3% by weight of potassium phosphate was applied using a guide nozzle so that the amount of oil applied to the fiber was 0.6% by weight.
  • the obtained solid multifilament was wound around a first heated roller heated to 50°C with a peripheral speed of 3200 m/min, then wound around a second heated roller at 80°C so as to be stretched 1.1 times, and then wound at a winding speed of 3360 m/min (overfeed rate 6%) using a winding machine that drives both the spindle and the touch roll.
  • the physical properties of the obtained polyester composite fiber are shown in Table 1.
  • the obtained polyester composite fiber was then subjected to false twisting under the following conditions at a draw ratio of 1.1 times.
  • the physical properties of the obtained polyester false twist textured yarn are shown in Table 2.
  • the obtained textured yarn had little crimp.
  • False twist machine type TMT Machinery HTS-15V (disk false twist method) Disk rotation speed: 6260 rpm (disk diameter 5.8 cm) Feed speed: 530 m/min First feed rate: ⁇ 0% First heater temperature (non-contact type): 180°C Second heater temperature (non-contact type): 200°C Second feed nip roller speed: 600 m/min Second feed rate: 1.0% Feed rate before winding: 4.0%
  • Example 6 As in Example 1, polytrimethylene terephthalate having an intrinsic viscosity of 1.0 dl/g and a glass transition point of 45° C. and polytrimethylene terephthalate having an intrinsic viscosity of 1.4 dl/g and a glass transition point of 46° C. were separately melted at 265° C., and extruded from a spinneret heated to 265° C. using a side-by-side cross-section die in a ratio of 50:50 through a single-layer spinneret with 24 holes having a diameter of 0.3 mm at a total throughput of 15 g/min.
  • the extruded molten multifilament was quenched by blowing air at a speed of 2.0 m/min to convert it into a solid multifilament, after which a 10% water emulsion finishing agent containing 60% by weight of octyl stearate, 15% by weight of polyoxyethylene alkyl ether, and 3% by weight of potassium phosphate was applied using a guide nozzle so that the amount of oil applied to the fiber was 0.6% by weight.
  • the obtained solid multifilament was wound around a first heating roller that was not heated and was moving at a speed of 1000 m/min, and then wound at a speed of 1000 m/min using a winding machine that drives both the spindle and the touch roll.
  • the physical properties of the obtained polyester composite fiber are shown in Table 1.
  • Example 7 As in Example 1, polytrimethylene terephthalate having an intrinsic viscosity of 1.0 dl/g and a glass transition point of 45° C. and polytrimethylene terephthalate having an intrinsic viscosity of 1.4 dl/g and a glass transition point of 46° C. were separately melted at 265° C., and extruded from a spinneret heated to 265° C. using a side-by-side cross-section die in a ratio of 50:50 through a single-layer spinneret having 24 holes with a diameter of 0.3 mm at a total throughput of 19 g/min.
  • the extruded molten multifilament was quenched by blowing air at a speed of 2.0 m/min to convert it into a solid multifilament, after which a 10% water emulsion finishing agent containing 60% by weight of octyl stearate, 15% by weight of polyoxyethylene alkyl ether, and 3% by weight of potassium phosphate was applied using a guide nozzle so that the amount of oil applied to the fiber was 0.6% by weight.
  • the resulting solid multifilament was wound around a first unheated heating roller running at a speed of 2600 m/min, then around a second heating roller running at 2600 m/min, and then wound at a speed of 2600 m/min using a winding machine that drives both the spindle and the touch roll.
  • the polyester composite fiber obtained had deteriorated significantly over time, was in a poor winding state, and tightening occurred during winding, making it impossible to stably obtain yarn samples.
  • a small amount of the polyester composite fiber was obtained, and its physical properties are shown in Table 1.
  • a polyester composite fiber false twist textured yarn that has a small initial elastic modulus, high shrinkage performance even before boiling water treatment, and a small difference in shrinkage properties before and after boiling water treatment.
  • this yarn is used to make a fabric, it is possible to obtain a fabric with a soft texture that not only has stretchability due to its high shrinkage performance, but also has no difference in shrinkage properties before and after boiling water treatment, and is less likely to shrink even in later processes such as dyeing.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Multicomponent Fibers (AREA)
PCT/JP2024/005206 2023-03-03 2024-02-15 ポリエステル複合繊維及びポリエステル仮撚加工糸、並びにそれらの製造方法 Ceased WO2024185439A1 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
KR1020257032165A KR20250155584A (ko) 2023-03-03 2024-02-15 폴리에스테르 복합 섬유 및 폴리에스테르 가연 가공사, 그리고 그들의 제조 방법
JP2025505178A JPWO2024185439A1 (https=) 2023-03-03 2024-02-15
EP24766811.4A EP4678793A1 (en) 2023-03-03 2024-02-15 Polyester composite fiber, polyester false-twist textured yarn, and production methods therefor
CN202480016272.2A CN120731301A (zh) 2023-03-03 2024-02-15 聚酯复合纤维和聚酯假捻加工纱以及它们的制造方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2023032374 2023-03-03
JP2023-032374 2023-03-03

Publications (1)

Publication Number Publication Date
WO2024185439A1 true WO2024185439A1 (ja) 2024-09-12

Family

ID=92674467

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2024/005206 Ceased WO2024185439A1 (ja) 2023-03-03 2024-02-15 ポリエステル複合繊維及びポリエステル仮撚加工糸、並びにそれらの製造方法

Country Status (6)

Country Link
EP (1) EP4678793A1 (https=)
JP (1) JPWO2024185439A1 (https=)
KR (1) KR20250155584A (https=)
CN (1) CN120731301A (https=)
TW (1) TW202500821A (https=)
WO (1) WO2024185439A1 (https=)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB965729A (en) 1961-09-09 1964-08-06 Schweizerische Viscose Improvements relating to the manufacture of filaments
JPH1193026A (ja) 1997-09-10 1999-04-06 Asahi Chem Ind Co Ltd 仮撚加工糸
WO2003040011A1 (en) * 2001-11-06 2003-05-15 Asahi Kasei Fibers Corporation Polyester composite fiber package
JP2003301341A (ja) 2002-04-04 2003-10-24 Asahi Kasei Corp 加撚糸及びその製造方法
JP2005133252A (ja) * 2003-10-31 2005-05-26 Solotex Corp 高速仮撚用複合繊維及びその製造方法
JP2005264424A (ja) 1999-09-30 2005-09-29 Asahi Kasei Fibers Corp ポリトリメチレンテレフタレートマルチフィラメント糸
JP2015007306A (ja) 2000-03-03 2015-01-15 イー・アイ・デュポン・ドウ・ヌムール・アンド・カンパニーＥ．Ｉ．Ｄｕ Ｐｏｎｔ Ｄｅ Ｎｅｍｏｕｒｓ Ａｎｄ Ｃｏｍｐａｎｙ 部分配向ポリ（トリメチレンテレフタラート）糸

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB965729A (en) 1961-09-09 1964-08-06 Schweizerische Viscose Improvements relating to the manufacture of filaments
JPH1193026A (ja) 1997-09-10 1999-04-06 Asahi Chem Ind Co Ltd 仮撚加工糸
JP2005264424A (ja) 1999-09-30 2005-09-29 Asahi Kasei Fibers Corp ポリトリメチレンテレフタレートマルチフィラメント糸
JP2015007306A (ja) 2000-03-03 2015-01-15 イー・アイ・デュポン・ドウ・ヌムール・アンド・カンパニーＥ．Ｉ．Ｄｕ Ｐｏｎｔ Ｄｅ Ｎｅｍｏｕｒｓ Ａｎｄ Ｃｏｍｐａｎｙ 部分配向ポリ（トリメチレンテレフタラート）糸
WO2003040011A1 (en) * 2001-11-06 2003-05-15 Asahi Kasei Fibers Corporation Polyester composite fiber package
JP2003301341A (ja) 2002-04-04 2003-10-24 Asahi Kasei Corp 加撚糸及びその製造方法
JP2005133252A (ja) * 2003-10-31 2005-05-26 Solotex Corp 高速仮撚用複合繊維及びその製造方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP4678793A1

Also Published As

Publication number Publication date
JPWO2024185439A1 (https=) 2024-09-12
KR20250155584A (ko) 2025-10-30
CN120731301A (zh) 2025-09-30
TW202500821A (zh) 2025-01-01
EP4678793A1 (en) 2026-01-14

Similar Documents

Publication Publication Date Title
JP3859672B2 (ja) 複合繊維及びその製造方法
EP1431430A1 (en) Polyester composite fiber pirn and production method therefor
JP7277680B1 (ja) ポリトリメチレンテレフタレート繊維およびその製造方法
CA2278962A1 (en) Monofil bicomponent fibres of the sheath/core type
JP3885468B2 (ja) 嵩高性ポリエステル系複合糸およびその製造方法ならびに布帛
WO2024185439A1 (ja) ポリエステル複合繊維及びポリエステル仮撚加工糸、並びにそれらの製造方法
WO2001068498A1 (en) Stretched yarn pirn
JPH11302922A (ja) ポリエステル異形断面繊維
EP1219733A1 (en) Poly(trimethylene terephthalate) multifilament yarn
JPWO2001023650A1 (ja) ポリトリメチレンテレフタレートマルチフィラメント糸
JP4036617B2 (ja) 高速仮撚用延伸糸及びその製造方法
JP3506129B2 (ja) 仮撚加工糸およびその製造方法
EP4696823A1 (en) Polytrimethylene terephthalate fiber, method for producing same, air-mixed filament yarn containing said polytrimethylene terephthalate fiber, and fabric composed thereof
CN88101834A (zh) 改良阳离子可染共聚酯的拉伸变形喂入丝
JP4334320B2 (ja) 高速仮撚用複合繊維からなるパッケージ及びその製造方法
JP2003227037A (ja) ストレッチ性織編物用ポリエステル複合中空繊維
JP2024129996A (ja) 複合仮撚加工糸およびその製造方法および布帛
JP4021794B2 (ja) 織物用複合繊維及びその製造法
JP2024082716A (ja) ポリトリメチレンテレフタレート複合糸およびその製造方法および布帛
JP2003213526A (ja) ストレッチ性織編物用ポリエステル複合繊維
JP3910038B2 (ja) 前配向糸パッケージとその製造方法
JP4059681B2 (ja) ポリトリメチレンテレフタレート前配向糸の製造方法
JP2003342843A (ja) 仮撚加工糸及びその製造法
CA3288964A1 (en) Polytrimethylene terephthalate fiber, method for producing same, air-mixed filament yarn containing said polytrimethylene terephthalate fiber, and fabric composed thereof
JP2005133252A5 (https=)

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 24766811

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2025505178

Country of ref document: JP

Kind code of ref document: A

WWE Wipo information: entry into national phase

Ref document number: 2025505178

Country of ref document: JP

WWE Wipo information: entry into national phase

Ref document number: 202480016272.2

Country of ref document: CN

ENP Entry into the national phase

Ref document number: 1020257032165

Country of ref document: KR

Free format text: ST27 STATUS EVENT CODE: A-0-1-A10-A15-NAP-PA0105 (AS PROVIDED BY THE NATIONAL OFFICE)

WWE Wipo information: entry into national phase

Ref document number: KR1020257032165

Country of ref document: KR

WWP Wipo information: published in national office

Ref document number: 202480016272.2

Country of ref document: CN

WWE Wipo information: entry into national phase

Ref document number: 2024766811

Country of ref document: EP

NENP Non-entry into the national phase

Ref country code: DE

WWP Wipo information: published in national office

Ref document number: 1020257032165

Country of ref document: KR

ENP Entry into the national phase

Ref document number: 2024766811

Country of ref document: EP

Effective date: 20251006

ENP Entry into the national phase

Ref document number: 2024766811

Country of ref document: EP

Effective date: 20251006

ENP Entry into the national phase

Ref document number: 2024766811

Country of ref document: EP

Effective date: 20251006

ENP Entry into the national phase

Ref document number: 2024766811

Country of ref document: EP

Effective date: 20251006