Classifications

• • 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
  • 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
  • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
  • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
  • D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
  • D01F6/62—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyesters
• • 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
• • 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
  • D02G3/32—Elastic yarns or threads ; Production of plied or cored yarns, one of which is elastic
• • D—TEXTILES; PAPER
  • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
  • D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
  • D02J1/00—Modifying the structure or properties resulting from a particular structure; Modifying, retaining, or restoring the physical form or cross-sectional shape, e.g. by use of dies or squeeze rollers
  • D02J1/08—Interlacing constituent filaments without breakage thereof, e.g. by use of turbulent air streams

Definitions

• the present invention relates to a polyester blended yarn comprising a spontaneously extensible polyester multifilament yarn and a heat shrinkable polyester multifilament yarn. More specifically, the present invention relates to a polyester mixed yarn which is particularly suitable for obtaining a cloth having both a dry touch and a high resilience, which has not been achieved in the past. Background art
• spontaneously extensible polyester multifilament yarns and heat shrinkable polyester multifilament yarns which were separately prepared, were mixed with an air jet nozzle or subjected to relaxation heat treatment.
• the heat-shrinkable polyester multifilament yarn is continuously supplied to the spontaneously extensible polyester multifilament yarn after the relaxation heat treatment while relaxing the polyester multifilament yarn which becomes spontaneously extensible by applying the heat treatment.
• a method of blending with an agitating nozzle for example, see Japanese Patent Application Laid-Open No. 1-250425) is used.
• An object of the present invention is to solve the above-mentioned problems of the prior art, and to provide a fabric comprising a spontaneously extensible polyester multifilament yarn and a heat-shrinkable polyester multifilament yarn, which has both an unprecedented dry touch and high rebound.
• An object of the present invention is to provide a polyester mixed fiber yarn.
• the present inventors have found that as a polyester multifilament yarn having spontaneous elongation, a core part and a core part along the length direction of the core part are obtained.
• a polyester multifilament yarn composed of a plurality of fins protruding radially it is possible to obtain a polyester mixed yarn suitable for obtaining a fabric having both non-conventional dry touch and high resilience. It was found that if the polyester multifilament yarn and spontaneously extensible yarn and the heat-shrinkable polyester multifilament yarn were pre-entangled and then subjected to relaxation heat treatment, the quality of the obtained mixed fiber yarn would be improved.
• the invention has been completed.
• polyester multifilament yarn A 19820 in a polyester mixed yarn comprising a spontaneously extensible polyester multifilament yarn A and a heat shrinkable polyester multifilament yarn B, the polyester multifilament yarn A 19820
• S A is the cross section of a part of the core
• D A is the diameter of the core when the cross section is a perfect circle, and the diameter of its circumscribed circle if it is not a perfect circle
• S ' B , L B and cross-sectional area of each W B fin portion, to I display the maximum length Contact Yopi maximum width.
• the polyester multifilament yarn A which becomes the spontaneously extensible polyester multifilament yarn A by performing the relaxation heat treatment
• the heat-shrinkable polyester multifilament yarn B are aligned and overlaid.
• a relaxation heat treatment is applied to impart spontaneous extensibility to the polyester multifilament yarn A, and a second relaxation heat treatment is performed by a non-contact heater.
• FIG. 1 is a sectional view showing an example of a filament cross section of a polyester multifilament yarn A according to the present invention.
• FIG. 2 is a schematic diagram showing an example of a process for producing the polyester mixed fiber of the present invention.
• the polyester used in the present invention is intended for a polyester having ethylene terephthalate as a main repeating unit.
• a small amount usually 15 Mol% or less, preferably 10 mol./. Is also good.
• small amounts of other polymers typically 10
• additives containing additives such as an antistatic agent, an anti-glare agent, an ultraviolet absorber, and a dyeability improver may be used.
• the polyester blended yarn of the present invention is composed of a spontaneously extensible polyester multifilament yarn A and a heat-shrinkable polyester multifilament yarn B.
• the filament yarn B may be composed of the same polyester, or may be composed of polyesters having different types and amounts of copolymer components, mixed polymers, additives and the like.
• a spontaneously extensible polyester multifilament yarn is composed of polyethylene terephthalate, and a heat-shrinkable polyester multifilament yarn is copolymerized with, for example, an isophthalic acid component of about 5 to 15 mol% as a third component. (Based on the total acid component) It is preferable that the polyethylene terephthalate is used.
• the spontaneously extensible polyester multifilament yarn A used in the present invention is a polyester undrawn yarn spun at a relatively high spinning speed of about 2000 to 5000 mZ (usually referred to as an intermediate oriented yarn POY), or 1 000 It can be obtained by subjecting a low-oriented polyester undrawn yarn spun at a spinning speed of about mZ minutes or an intermediate-oriented yarn drawn at a low magnification to a relaxation heat treatment.
• POY intermediate oriented yarn
• T g secondary transition point
• T g + 20 ° C a method of performing a relaxation heat treatment and the like can be given.
• the polyester multifilament yarn A ′ used when producing the polyester mixed fiber yarn of the present invention is different from the polyester multifilament yarn A ′ because it imparts spontaneous elongation.
• the spontaneously extensible polyester multifilament yarn A is composed of a core portion and a plurality of fin portions projecting radially from the core portion along the length direction of the core portion.
• the cross-sectional area and diameter of the core part are s A and fine D a, also the cross-sectional area of each fin portion, S maximum length and maximum width, respectively B, when the L B and W B, is essential to satisfy the following requirements ( ⁇ ) - ( ⁇ ) simultaneously is there.
• the cross-sectional area is smaller than 1 Z 20 of the cross-sectional area of a part of the core or 1 Z3 or more. If there are large fins, the resulting mixed yarn has a poor dry touch feeling, which is not preferable.
• L B / D A that is, the maximum length thereof is present fin portion of 0.1 less than 6 times the part core diameter, insufficient de Raitatsuchi feeling of the resulting combined filament yarn
• L B ZD A that is, when there is a fin portion whose maximum length exceeds 3.0 times the diameter of a part of the core, the fin portion is bent, It is not preferable because only a rough hand is obtained and the leveling property is lowered.
• W B ZD A 1/4, that is, when there is a fin portion whose maximum width is larger than 14 which is the diameter of a part of the core, a soft texture can be obtained as a mixed fiber. Not preferred.
• W B ZD A is a this stop in approximately 1 Z 8 are preferred.
• the heat-shrinkable polyester multifilament yarn B a polyester multifilament stretched yarn having a boiling water shrinkage of 8.0% or more is preferably used, and more preferably a polyester having a boiling water shrinkage of 10 to 16%.
• a steal multifilament drawn yarn is used. Maruchifirame As such a heat-shrinkable polyethylene ester multifilament, Poriesu Tel multifilament drawn yarn that has not been heat set, consisting of a third as ingredients such Isofutaru acid 5-1 5 mole 0/0 degree copolymerized allowed polyester Non-stretched yarn and the like. '
• the spontaneously extensible polyester multifilament yarn A is located relatively outside the mixed yarn, and the heat-shrinkable polyester multifilament yarn B is relatively formed of the mixed yarn. Since it is located on the inside, the single-fiber fineness of the polyester multifilament yarn A 'is 2 to 9 dte X and the single-fiber fineness of the heat-shrinkable polyester multifilament yarn B is 3 111 dte X, and the former is preferably smaller than the latter.
• the mixing ratio of the spontaneously extensible polyester multifilament yarn A and the heat-shrinkable polyester multifilament yarn B is 8: 2 to 5 by weight ratio (A : B) from the viewpoint of deep color and confusion. Les, preferably within the range of 5.
• the above-described mixed fiber of the present invention can be stably produced with good quality and little occurrence of thread breakage, for example, by the following method. That is, for example, using the apparatus shown in Fig. 2, the polyester multifilament yarn A, which exhibits spontaneous elongation by performing relaxation heat treatment, and the heat shrinkable polyester multifilament yarn B are aligned. Interlaced nozzle 3 provided between supply roll 1 and first take-up roll (heating roll) 2 causes confounding under overfeed.
• the first take-up roll 2 is heated, and between the supply roll 1 and the first take-up roll 2, the polyester multifilament yarn A ′, Since B 'is over-fed, the polyester multifilament A, wound on the first take-off roll 2, is subjected to a heat-relaxation treatment on this roll, and spontaneous elongation is imparted.
• a second relaxation heat treatment is performed by a non-contact heater 5 provided between the first take-up roll 2 and the second take-up roll 4, heat setting is performed, and the package 6 is wound.
• the first take-up roll 2 it is preferable to heat the first take-up roll 2 and then perform a relaxation heat treatment for imparting spontaneous elongation, because the apparatus becomes compact, but the interlacing nozzle 3 is preferred. If the overfeed rate (relaxation rate) required for imparting spontaneous elongation by relaxation heat treatment is greater than the overfeed rate suitable for confounding in Further, a take-off roll may be provided, and a predetermined relaxation heat treatment may be performed with the take-up roll.
• the first take-up roll 2 is a heating roll, the diameter of the roll 2 on the yarn exit side is made smaller than the diameter of the roll 2 on the yarn entry side, and a predetermined overfeed rate (relaxation rate) is obtained on the roll. Heat treatment.
• the temperature and the overfeed rate (relaxation rate) in the relaxation heat treatment for imparting spontaneous elongation to the polyester multifilament yarn A ' depend on the type of yarn used for the polyester multifilament yarn A'.
• an intermediate oriented yarn (POY) spun at a spinning speed of 2000 to 350 OmZ, preferably 2500 to 350 Om / min, is used for the first take-up roll.
• PY intermediate oriented yarn
• Heating roll When the relaxation heat treatment is performed on the roll 2, it is preferable that the roll surface temperature is 100 to 130 ° C and the overfeed rate (relaxation rate) is 1.0 to 1.5%. .
• the second relaxation heat treatment by the non-contact heater 5 gives the polyester mixed fiber a property suitable for making a worsted-like fabric of high repulsion wool lycatch.
• the heat treatment is performed at 210 ° C to 240 ° C at an overfeed rate of 1.5 to 2.5%, and the processing time is usually 0.01 to 1%. 0.3 seconds.
• the boiling water shrinkage of the obtained polyester mixed fiber is usually about 5 to 13%.
• the non-contact heater 5 a slit heater, a pipe heater, or the like can be used.
• the relaxation heat treatment is carried out to form the multifilament yarn A '. It is necessary to impart extensibility, so that the yarn does not come into contact with the non-contact heater 5 at the time of the second relaxation heat treatment, and a polyester mixed fiber yarn having good levelness can be obtained. It is possible to stably manufacture with less occurrence of yarn breakage.
• Polyester multifilament yarn A is singly relaxed to form a spontaneously extensible polyester multifilament yarn, heat-set by a second relaxation heat treatment, and entangled with heat shrinkable polyester multifilament yarn B to form a polyester mixed fiber.
• the yarn comes into contact with the non-contact heater, which causes uneven dyeing and increases the number of yarn breaks, which is not preferable.
• Polyethylene terephthalate having an intrinsic viscosity of 0.62 is melted by a conventional method and spun at a spinning speed of 3,000 m / min to produce a polyester intermediate of 84 dtex x24 filament (single fiber fineness: 3.3 dtex). Oriented yarn
• polyester multifilament yarn A ' polyester multifilament yarn A '
• this polyester multifilament L B / D A, W B / D A were as shown in Table 1.
• a polyethylene terephthalate toy sophthalate copolymerized polyester with an intrinsic viscosity of 0.64 (10.0 mol% copolymer of isophthalic acid) is melted at 280 ° C and spun at 1 450 m / min.
• Unstretched yarn spun at a high speed is stretched 2.9 times at 87 ° C, heat shrinkage of boiling water shrinkage 15%, 56 dtex / 12 filament (single fiber arrowhead degree: 4.7 dtex) Polyester yarn (heat shrinkable polyester multifilament yarn B,) was obtained. .
• polyester mixed yarn was manufactured using the equipment shown in Fig. 2. That is, both polyester multifilament yarns A 'and B' are brought together to form an interlaced yarn 3 provided between the supply roll 1 and the first take-up roll (heating roll having a surface temperature of 120 ° C) 2. ,
• the yarn is wound eight times on a heating roll 2 having a surface temperature of 120 ° C, subjected to relaxation heat treatment, and spontaneously formed into a polyester multifilament yarn A '. Extensibility was imparted.
• the second relaxation heat treatment was performed by the slit heater 5 provided between the heating roll 2 and the second take-off roll 4 at 230 ° C. and 2.0% overfeed rate for 0.05 seconds.
• the sheet was heat-fixed, wound twice on a second take-off roll (cold roll) 4, and then wound on a package 6.
• no contact of the yarn with the slit heater 5 was observed, and the yarn was broken only once per day.
• the obtained mixed yarn was woven into a plain woven fabric having a warp of 60 yarns / cm and a weft of 35 yarns / cm, and was dyed black at 135 ° C for 60 minutes by an ordinary method.
• the dyed fabric obtained was a woven fabric having unprecedented dry touch and high resilience, and no dyeing spots were observed.
• the texture of the fabric was evaluated organoleptically in four stages from A (very good) to D (poor) for dry touch, soft feeling, and high resilience. 19820
• a polyester mixed fiber was obtained in the same manner as in Example 1 except that the polyester multifilament A ′ was changed as shown in Table 1. As shown in Table 1, the fabric hand, leveling properties and stretchability were all good results.
• Example 1 after the polyester multifilament yarn A ′ alone was subjected to relaxation heat treatment on a heating roll having a surface temperature of 120 ° C. at an overfeed rate of 1.2% to impart spontaneous elongation, A second relaxation heat treatment was performed by a slit heater at 230 ° C. for 2.05 seconds at an overfeed rate of 2.0% to perform heat setting.
• the obtained spontaneously extensible polyester multifilament yarn A was aligned with the heat-shrinkable polyester multifilament yarn B, and entangled with an interlace nozzle under the same conditions as in Example 1.
• Example 1 a polyester mixed filament was obtained in the same manner as in Example 1 except that the polyester multifilament A was a round cross section. As shown in Table 1, the leveling properties and stretchability were good, but the fabric texture was completely dry and the desired fabric texture was not obtained. table 1
• the polyester mixed fiber yarn of the present invention is suitable for obtaining an unprecedented dry touch and a fabric having both high resilience and dry touch, and is excellent in level dyeing with less occurrence of thread breakage and the like. It can be widely used for various weaving and knitting applications.

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• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Mechanical Engineering (AREA)
• Physics & Mathematics (AREA)
• Fluid Mechanics (AREA)
• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• General Chemical & Material Sciences (AREA)
• Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)

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Publications (1)

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• 2004
  • 2004-12-27 EP EP04808170A patent/EP1703004A4/de not_active Withdrawn
  • 2004-12-27 RU RU2006128733/12A patent/RU2344213C2/ru not_active IP Right Cessation
  • 2004-12-27 US US10/585,308 patent/US20070186533A1/en not_active Abandoned
  • 2004-12-27 WO PCT/JP2004/019820 patent/WO2005071149A1/ja active Application Filing
  • 2004-12-27 JP JP2005517211A patent/JPWO2005071149A1/ja active Pending
  • 2004-12-27 CA CA002552861A patent/CA2552861A1/en not_active Abandoned
  • 2004-12-27 KR KR1020067015697A patent/KR20060130165A/ko not_active Application Discontinuation
  • 2004-12-27 CN CNA2004800400403A patent/CN1902346A/zh active Pending
• 2005
  • 2005-01-04 TW TW094100163A patent/TW200530446A/zh unknown

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