WO2008007803A1 - Fil de fausse torsion polyester antistatique, son procédé de production, et fil de fausse torsion composite spécial antistatique comprenant le fil de fausse torsion polyester antistatique - Google Patents

Fil de fausse torsion polyester antistatique, son procédé de production, et fil de fausse torsion composite spécial antistatique comprenant le fil de fausse torsion polyester antistatique Download PDF

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Publication number
WO2008007803A1
WO2008007803A1 PCT/JP2007/064128 JP2007064128W WO2008007803A1 WO 2008007803 A1 WO2008007803 A1 WO 2008007803A1 JP 2007064128 W JP2007064128 W JP 2007064128W WO 2008007803 A1 WO2008007803 A1 WO 2008007803A1
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WO
WIPO (PCT)
Prior art keywords
yarn
false
polyester
antistatic
false twisted
Prior art date
Application number
PCT/JP2007/064128
Other languages
English (en)
Japanese (ja)
Inventor
Masaaki Yanagihara
Suguru Nakajima
Original Assignee
Teijin Fibers Limited
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
Priority claimed from JP2006194238A external-priority patent/JP4818004B2/ja
Priority claimed from JP2006195539A external-priority patent/JP4818007B2/ja
Application filed by Teijin Fibers Limited filed Critical Teijin Fibers Limited
Priority to CA002658091A priority Critical patent/CA2658091A1/fr
Priority to US12/307,895 priority patent/US20090308048A1/en
Priority to CN2007800267148A priority patent/CN101490322B/zh
Priority to EP07768434A priority patent/EP2042626A4/fr
Publication of WO2008007803A1 publication Critical patent/WO2008007803A1/fr

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/88—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds
    • D01F6/92—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds of 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
    • 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
    • D02G1/0266—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 false-twisting machines
    • 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
    • D02G1/04—Devices for imparting false twist
    • D02G1/06—Spindles
    • 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
    • D02G1/04—Devices for imparting false twist
    • D02G1/08—Rollers or other friction causing elements
    • D02G1/082—Rollers or other friction causing elements with the periphery of at least one disc
    • 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 an antistatic polyester false twisted yarn, a method for producing the same, and an antistatic special composite false twisted yarn including the antistatic polyester false twisted yarn. More specifically, a polyester false twisted yarn having excellent antistatic properties with excellent durability, a method for stably producing such false twisted yarn at high speed, and the antistatic polyester false twisted yarn It is related with the antistatic special composite false twisted yarn of the core sheath structure containing. Background art
  • Polyester especially polyethylene terephthalate or aromatic polyester mainly composed thereof (hereinafter abbreviated as PET-based polyester), has many excellent properties, so it can be used for molding fibers, films, sheets, etc. Widely used as a material.
  • PET-based polyester since polyester is hydrophobic, its use in fields where antistatic properties are required is limited.
  • antistatic properties antistatic properties
  • a method of blending a polyester with a polyoxyalkylene-based polyether compound see Japanese Examined Patent Publication No.
  • Twisted yarn is known (for example, see Japanese Examined Patent Publication No. 611-1973 3).
  • An object of the present invention is to provide a novel PET-based polyester false twisted yarn capable of eliminating the above-mentioned drawbacks of the conventional products and obtaining a polyester fabric excellent in antistatic performance, and the polyester temporary It is possible to provide a method capable of stably producing a twisted yarn, and furthermore, it is possible to obtain a spun-like polyester fabric having a very good bulkiness and a feeling of span and excellent antistatic performance. It is intended to provide a novel polyester composite false twisted yarn and a method for stably producing the composite false twisted yarn.
  • polyester unstretched yarns composed of a polyester composition containing a specific antistatic agent within a specific range, and a specific false twister. Used, extended under specific temperature and twist conditions It has been found that a new polyester false twisted yarn that can be made into a polyester fabric with good durability, texture, etc. and excellent anti-static performance can be produced stably by carrying out simultaneous stretching and false twisting. The present invention has been reached.
  • the present inventors configured the core yarn to be composed of a polyester yarn containing a specific antistatic agent in a specific ratio, and the sheath yarn to be polymethyl.
  • Consists of polyester yarns containing a specific proportion of methacrylate polymer or polystyrenic polymer, and the above-mentioned unstretched yarn for core yarn and unstretched yarn for sheath yarn are aligned and specified. If the simultaneous false twisting is performed under the above conditions, the sheath yarn can wrap the antistatic core yarn uniformly in the yarn length direction, resulting in very good bulkiness and a sense of span.
  • the present inventors have found that a polyester composite false twisted yarn that can be made into a spun-like polyester fabric excellent in electric performance can be manufactured with high productivity with greatly improved process stability.
  • a false twisted yarn of antistatic polyester multifilament composed of an aromatic polyester composition containing a compound, wherein the false half-life of the false twisted yarn is 60 seconds or less, and Antistatic polyester false twisted yarn characterized by a crimping rate of 10 to 20%,
  • a non-stretched yarn having a birefringence of 0.02 to 0.05 obtained by melt spinning an aromatic polyester composition containing is stretched under the conditions satisfying the following (i to (2) at the same time: Method for producing antistatic polyester false twisted yarn characterized by simultaneous false twisting (Ii) As a false twister, it is a triaxial friction disk type, and the material of the lowermost disk located at the untwisting section is ceramic, and the contact length between the disk and the running yarn is 2.5-0. Use a disk that is 5 mm and whose diameter is 90 to 98% of the diameter of the disk just above.
  • the number of false twists T (twice m) is set to 1 5 000 / Y 1/2 ⁇ T ⁇ 3 5000 / ⁇ 1/2 with respect to the fineness (Y dtex) of the false twisted yarn.
  • ⁇ Force More than 75 mol% of the repeating units consist of ethylene terephthalate units, (a) polyoxyalkylene polyethers, and (b) polyesters that are substantially non-reactive.
  • a special composite false twisted yarn comprising polyester multifilaments composed of an aromatic polyester composition containing 0% by weight, wherein the processed yarn has a charged friction pressure of 2000 V or less, and a crimp rate of 2 to 8 %, And the average yarn length of the sheath yarn (B) is 10 to 20% longer than the average yarn length of the core yarn (A). , And
  • polyester multifilament When drawing false twisting of polyester multifilament, it contains (a) a polyoxyalkylene polyether and (b) an organic ionic compound that is substantially non-reactive with polyester.
  • the antistatic special composite characterized by combining the unstretched polyester multifilament (B,) containing / 0 and stretching and false twisting under the conditions satisfying all of the following (1) to (4) False twisted yarn manufacturing method
  • the false twisting temperature is 1 70 ° C ⁇ 300 ° C
  • the number of false twists T shall be 1 5000 / Y 1/2 ⁇ T ⁇ 3 5000 / ⁇ 1/2 with respect to the fineness (Y dtex) of the false twisted yarn.
  • Fig. 1 is a schematic diagram of a drawing simultaneous false twisting machine for producing a preliminarily processed yarn used in the present invention.
  • 1 is a polyester undrawn yarn or spun mixed yarn
  • 2 is a yarn guide
  • 3, 3 is a feed roller
  • 4 is an interlaced nose
  • 5 is a first stage heater
  • 6 is a cooling plate
  • 7 is a false twister (3-axis friction disc unit)
  • 8 is the first delivery port 9 is the second stage heater
  • 10 is the second delivery roller
  • 11 is the tapping roller
  • 12 is the polyester false twisted cheese.
  • FIG. 2 is a front view showing an embodiment of the false twisted disk unit used in the present invention.
  • 13 is a false twist disk
  • 14 is a guide disk
  • 15 is a rotating shaft
  • 16 is a timing belt
  • 17 is a drive belt.
  • the antistatic false twisted yarn of the present invention is composed of multifilaments made of a specific antistatic aromatic polyester composition, and has specific antistatic properties and crimpability.
  • embodiments of the present invention will be described in detail in the order of the aromatic polyester composition constituting the antistatic false twisted yarn, the characteristics of the false twisted yarn and the method for producing the false twisted yarn.
  • ⁇ Composition forming antistatic false twisted yarn> Systems aromatic polyester as referred to in the present invention, polymer repeat units 7 5 mole 0/0 or more, preferably 8 5-1 0 0 mole 0/0, but a PET aromatic polyester is ethylene terephthalate, It is intended mainly for polymers obtained by the reaction of terephthalic acid or its ester-forming derivatives with ethylene glycol or its ester-forming derivatives.
  • an acid component may be obtained by copolymerizing a small amount of other bifunctional aromatic carboxylic acids in addition to terephthalic acid.
  • Such copolymer components include isophthalic acid, orthophthalic acid, 1,5-naphthalenedicarboxylic acid, 2,5-naphthalenedicarboxylic acid, 2,6-naphthalenedicarboxylic acid, 4,4′-biphenyldicarboxylic acid 3,3 '-Biphenyl dicarboxylic acid, 4, 4'-biphenyl terdi-forced norevonic acid, 4, 4'-biphenylenomethane dicanolevonic acid, 4, 4,' -biphenylenosnorehon di canenolevonic acid, 4,4'-biphenylenopropylene didicarboxylic acid, 1,2-bis (phenoxy) ethane-4,4'-dicarboxylic acid, 2,5-anthracenedicar
  • difunctional aromatic carboxylic acids Two or more of these difunctional aromatic carboxylic acids may be used in combination.
  • these difunctional aromatic strength rubonic acid and bifunctional aliphatic carboxylic acids such as adipic acid, azelaic acid, sebacic acid and dodecanedioic acid, and difunctional hexanedicarboxylic acid
  • alicyclic carboxylic acids, 5-sodium sulfoisophthalic acid and the like can be used in combination.
  • diol compounds include propylene glycol, butylene glycol, hexylene glycol, neopentylene glycol, 2-methyl 1,3-propanediol, diethylene glycol, and trimethylene glycol.
  • Aliphatic diols, alicyclic diols such as 1,4-hexane hexanemethanol, and mixtures thereof may be copolymerized. Also, if the amount is small, Polyoxyalkylene glycols having both ends or one end unblocked can be copolymerized together with the copper compound.
  • a polycarboxylic acid such as trimellitic acid or pyromellitic acid
  • a polyol such as glycerin, trimethylol bread, or pentaerythritol
  • a polycarboxylic acid such as trimellitic acid or pyromellitic acid
  • a polyol such as glycerin, trimethylol bread, or pentaerythritol
  • PET-based aromatic polyesters include polyethylene terephthalate (PET) homopolymers, polyethylene isophthalate terephthalate, polyethylene butylene terephthalate, polyethylene terephthalate decane dicarboxylate. Copolyesters such as Of these, polyethylene terephthalate homopolymer having a good balance of mechanical properties and yarn-forming properties is particularly preferable.
  • PET polyethylene terephthalate
  • PET polyethylene isophthalate terephthalate
  • polyethylene butylene terephthalate polyethylene terephthalate decane dicarboxylate.
  • Copolyesters such as Of these, polyethylene terephthalate homopolymer having a good balance of mechanical properties and yarn-forming properties is particularly preferable.
  • PET aromatic polyester is synthesized by an arbitrary method.
  • esterification reaction directly between terephthalic acid and ethylene glycol
  • transesterification reaction between lower alkyl ester of terephthalenolic acid such as dimethyl terephthalate and ethylene glycol or terephthalic acid
  • First reaction to produce terephthalic acid glycol ester and Z or its low polymer by reacting with ethylene oxide, and then the product is heated under reduced pressure until the desired degree of polymerization is reached. It is easily produced by the second stage reaction to be condensed.
  • Such PET aromatic polyesters may contain stabilizers, matting agents, coloring agents, and other additives as necessary.
  • the antistatic aromatic polyester composition forming the false twisted yarn of the present invention is a mixture of two specific antistatic agents in the PET aromatic polyester as described above.
  • the polyoxyalkylene polyether (a) blended as the first antistatic agent in the present invention is composed of a single oxyalkylene unit as long as it is substantially insoluble in the PET aromatic polyester.
  • Polyki It may be a sialkylene glycol or a copolymerized polyoxyalkylene darlycol composed of two or more oxyalkylene units, and may be a polyoxyethylene-based polyether represented by the following general formula (I): Even if there is.
  • Z is an organic compound residue having 1 to 6 active hydrogen atoms
  • R 1 is an alkylene group or substituted alkylene group having 6 or more carbon atoms
  • R 2 is a hydrogen atom, a monovalent hydrocarbon group having 1 to 40 carbon atoms, or a monovalent hydroxyl group having 2 to 40 carbon atoms.
  • k is an integer of 1 to 6
  • n is an integer satisfying n ⁇ 7 OZk
  • m is an integer of 1 or more.
  • polyoxyalkylene polyethers include polyoxyethylene glycol having a molecular weight of 4000 or more, polyoxypropylene dallicol having a molecular weight of 1000 or more, polyoxytetramethylene glycol, ethylene oxide having a molecular weight of 2000 or more.
  • examples include compounds to which 6 or more substituted ethylene oxides are added.
  • An alkyl group-substituted ethylene oxide with 8 to 40 carbon atoms added to the end Compound is preferred.
  • the blending amount of the polyoxyalkylene polyether compound (a) is preferably 0.2 to 30 parts by weight, more preferably 2 to 6 parts by weight with respect to 100 parts by weight of the aromatic polyester. is there.
  • the blending amount is less than 0.2 parts by weight, the hydrophilicity is insufficient and sufficient antistatic property cannot be exhibited.
  • the antistatic effect is no longer
  • the mechanical properties of the resulting composition are impaired, and the polyether compound tends to bleed out, so that the penetration of the chip into the ruder during melt spinning is reduced. Spinning stability also deteriorates.
  • the aromatic polyester composition is further blended with an organic ionic compound (b) as a second antistatic agent in order to particularly improve antistatic properties.
  • an organic ionic compound is substantially non-reactive with the matrix PET-based aromatic polyester and substantially non-reactive with the polyoxyalkylene-based polyether compound (a).
  • sulfonic acid metal salts and sulfonic acid quaternary phosphonium salts represented by the following general formulas ( ⁇ ) and (III) are preferable. These may be used alone or in combination of two or more.
  • R represents an alkyl group having 3 to 30 carbon atoms or an aryl group having 6 to 40 carbon atoms
  • M represents an alkali metal or an alkaline earth metal.
  • R when R is an alkyl group, the alkyl group may be linear or have a branched side chain.
  • M is an alkali metal such as Na, K and Li, or an alkaline earth metal such as Mg and Ca, and Li, Na and K are preferred.
  • Such sulfonic acid metal salts may be used alone or in combination of two or more.
  • preferable metal sulfonates include sodium stearyl sulfonate, sodium octyl sulfonate, sodium dodecyl sulfonate, sodium alkyl sulfonate having an average of 14 carbon atoms, and dodecylbenzene sulfonic acid.
  • examples thereof include sodium mixtures, sodium dodecyl benzene sulfonate (hard type, soft type), lithium dodecyl benzene sulfonate (hard type, soft type), magnesium dodecyl benzene sulfonate (hard type, soft type), and the like.
  • RR 2 , R 3 and R 4 are each independently carbon An alkyl group having 3 to 30 atoms or an aryl group having 6 to 40 carbon atoms.
  • These I 1 , R 2 , R 3 and R 4 are each a lower alkyl group having 5 to 15 carbon atoms, a phenyl group or a benzyl group.
  • the total number of carbon atoms of RR 2 , R 3 and R 4 is preferably 60 or less.
  • Such quaternary phosphonium salts of sulfonic acids include tetrabutylphosphonium alkyl sulfonates having an average number of carbon atoms of the alkyl group of 14, and an average number of carbon atoms of the alkyl group of 14 Tetraphenylphosphonium alkyl sulfonate, alkyl sulfonate triphenyl phosphonium having an average number of carbon atoms of the alkyl group of 14, tetrabutyl phosphonium dodecinorensenorephonate (hard type soft type), Examples include decenorebenzenesolephonic acid tedrafeninophosphophosphonium (hard type, soft type), dodecylbenzenesulfonic acid benzyl triphenylphosphonium (hard type, soft type), etc.
  • Such sulfonic acid quaternary phosphonium salts Can be used alone or in combination of two or more May be used.
  • the organic ionic compound (b) only one kind may be used or two or more kinds may be used in combination.
  • the total amount of the organic ionic compound (b) is from 0.05 to 10 parts by weight based on 100 parts by weight of the aromatic polyester. : I is preferably in the range of 0 parts by weight, more preferably 0.5 to 4 parts by weight. If the amount is less than 0.5 parts by weight, the effect of improving the antistatic property is small. If the amount exceeds 10 parts by weight, the mechanical properties of the fiber are impaired, and the ionic compound also becomes squeezed out. Tip rudder penetration during melt spinning is reduced, and spinning stability is also deteriorated.
  • the above aromatic polyester composition is not limited to the purpose of the present invention, and other known additives such as pigments, dyes, matting agents, Antifouling agents, fluorescent brighteners, flame retardants, stabilizers, UV absorbers, lubricants, etc. may be added.
  • the false twisted yarn of the present invention has a crimp in the range of 10 to 20%, particularly 12 to 18%. When the crimp ratio is within this range, a woven or knitted fabric with an excellent soft feel can be obtained.
  • the crimp rate is less than 10%, the inter-yarn gaps in the knitted or knitted fabric are increased, and the dye is liable to enter, and the dyed spots are easily developed, which is not preferable. On the other hand, if it exceeds 20%, the surface of the resulting knitted or knitted fabric has a white color tone, and the texture of the woven or knitted fabric becomes unnatural.
  • the calcined yarn of the present invention has a charged half-life of 60 seconds or less, preferably 5 to 40 seconds.
  • the half-life of the charged voltage means that the false twisted yarn is knitted, dyed, conditioned, and the antistatic performance is measured according to JIS-L 1 0 94 Is a value measured by
  • the time (seconds) until the charged voltage decays to 12 of the initial charged voltage is measured, and the shorter the time (seconds), the better the antistatic performance.
  • Those with a charged half-life of more than 60 seconds do not have the antistatic effect or are very small, and therefore the purpose of the present invention cannot be achieved.
  • the false twisted yarn of the present invention has a total fineness in the range of 50 to 200 dte X (decitex) in order to make it easy to adjust the weaving density in a woven or knitted fabric within an appropriate range. Suitable, preferably in the range of 50 to 1550 dtex. When the total fineness is less than 50 dtex, it is not preferable because the tension of the knitted fabric is weak and it is difficult to obtain a sufficiently dense woven fabric. On the other hand, if it exceeds 200 dte X, the basis weight of the woven or knitted fabric becomes too large, which is not preferable for knitting.
  • the fineness of the single fiber is preferably 1.0 to 5.0 dte X, and the number of constituent filaments of the false twisted yarn is preferably 24 to 96.
  • the antistatic polyester false twisted yarn of the present invention described above can be stably manufactured with good productivity by, for example, the following method.
  • the above polyoxyalkylene diol (a) and ionic antistatic agent (b) Using an unstretched multifilament with a birefringence of 0.02 to 0.05, melt-spun from an aromatic polyester composition in which both are uniformly blended, satisfying the following (i) to (mouth) simultaneously Stretching simultaneous false twisting under the conditions
  • the number of false twists T (times Zm) shall be 1 5000ZY 1/2 ⁇ T ⁇ 35000ZY 1/2 with respect to the fineness (Y dtex) of false twisted yarn.
  • the aromatic polyester composition is melted and discharged from a spinneret, cooled and solidified to form a filament, each filament is combined, the necessary oil agent is added, and a spinning speed of 2000 to 450 OmZ min. In particular, it is preferably taken up under the conditions of 2500-3500 m / min.
  • the birefringence of the spun undrawn yarn needs to be in the range of 0.02 to 0.05. If the birefringence is less than 0.02, the tension during false twisting is low, surging is likely to occur, and thermal set spots occur due to yarn swinging, resulting in defective stains. This is not preferable because the draw ratio is increased during processing and the yarn becomes weak. On the other hand, when the birefringence index exceeds 0.05, it is not preferable because raw yarn fluff is likely to occur and the process becomes unstable.
  • the yarn is entangled by an air turbulent flow in the steps of spinning and stretching or false false twisting.
  • This air entanglement treatment may be performed in a separate process from the drawing false twisting process, but as shown in Fig. 1, an interlace nozzle (4) is installed in the drawing false twisting device and immediately before the drawing false twisting process. It is preferable to apply. This suppresses the occurrence of fluff and can have a positive effect on the handleability of the processed yarn.
  • another interlaced nozzle not shown
  • the yarn after heat setting under false twist is air entangled to completely mix and entangle the yarn, making it uniform in the yarn length direction. Let From this effect, it is possible to obtain a processed yarn that has a uniform antistatic performance in the yarn length direction and expresses a high-class feeling.
  • the undrawn yarn that has been subjected to the entanglement treatment immediately before the drawn calcining process is preferably subjected to crimping by applying it to a drawn false twisting machine equipped with a two-stage heater as shown in FIG.
  • the polyester false twisted yarn is used.
  • the above-mentioned polyester undrawn yarn (1) was pulled out of the package and placed between two pairs of feed rollers (3, 3 ') through the yarn guide (2). Air entanglement is performed by the interlace nozzle (4).
  • the unstretched yarn that has been entangled here is a three-axis friction disc type false twist that is rotating while being stretched at a predetermined ratio between the feed roller (3 ') and the first delivery roller (8). It is twisted with the tool (7).
  • the material of the lowermost disk located in the untwisting portion is ceramic, and the contact length between the disk and the running yarn is 2.5 to 0.5 mm.
  • a disk whose diameter is 90 to 98% of the diameter of the disk located immediately upstream is used.
  • the yarn is heat set in a twisted state by the first stage heater (5), then cooled by the cooling plate (6) on the downstream side, passed through the false twister (7) and untwisted. Is done.
  • the traveling yarn is reheated by a second stage heater (9) installed between the first delivery roller (8) and the second delivery roller (10), if necessary. And then air-entangled-and then wound with a take-off roller (1 1) as a cheese-like package (1 2) to produce the desired antistatic polyester false twisted yarn.
  • a second stage heater (9) installed between the first delivery roller (8) and the second delivery roller (10), if necessary.
  • a take-off roller (1 1) as a cheese-like package (1 2) to produce the desired antistatic polyester false twisted yarn.
  • both the first stage heater (5) and the second stage heater (9) are non-contact type.
  • the second stage heater (9) often omits SW-OF F (not used). It may be used as required for the texture required for the processed yarn.
  • the false twisting tool (7) is a triaxial friction disk type as shown in FIG. 2, and the lowermost disk located at the untwisting portion is made of ceramic. And the disk diameter immediately upstream of the disk diameter is 90 to 98%, and the contact length between the disk and the running yarn is 2.5 to 0.5 mm. It is important. That is, the false twisting tool (7) illustrated in Fig. 2 is of the triaxial friction disk type in which two false twisted disks (1 3) are attached to three rotating shafts (15), respectively.
  • each rotating shaft (15) is rotated at a predetermined speed by a timing belt (16) driven by a driving belt (17) to rotate each false twist disk (13).
  • the lowest disk (the lower disk attached to the left rotating shaft in the example of FIG. 2) located at least in the untwisting portion of the false twist disk (1 3) is made of ceramic, and Use a disk whose diameter is 90 to 98% of the diameter of the disk immediately upstream (the lower disk attached to the central rotating shaft in the example in Fig. 2).
  • the contact length between the ceramic disk and the running yarn is 2.5 to 0.5 mm.
  • the lowermost disk material of the false twisting tool (7) is ceramic.
  • the contact length between the disk and the running yarn is set to 2.5 to 0.5 mm when the completion of combustion and the crimped yarn enters the final untwisted portion. This is based on the knowledge of the present inventors that reducing the contact area between the disk and the yarn as much as possible and reducing the resistance is effective in significantly reducing the fluff. Similarly, if the diameter of the bottom disk is 90-98%, the resistance when moving the yarn guide to the next step (ie, heat set) is reduced. This is due to the fact that the yarn is in an appropriate zone where it can move smoothly.
  • the filament yarn constituting the undrawn yarn contains the above-mentioned two kinds of antistatic agents.
  • processed fluff will be generated, which will adversely affect the weaving, unwinding and quality of the woven product.
  • the contact length between the running yarn and the lowermost disk is set to 2.5 to 0.5 mm. It has been found to be particularly effective in significantly reducing processed fluff. _
  • the false twisting temperature in the present invention is required to be 170 to 300 ° C.
  • this temperature is less than 1.7 ° C, the crimping performance is low, the texture is hard, and if it exceeds 300 ° C, the processed yarn will become extremely flat and processed fluff will be generated. Therefore, it is not preferable.
  • the appropriate heater temperature here is based on a commercially available false twisting machine (Teijin Seiki 2 16 6 HTS-1 5 V), non-contact type 1.0 to 1.5 m long
  • the yarn speed is assumed to be 80 O m min. ⁇ . Therefore, when using a special heater or processing at ultra high speed, the set temperature should be adjusted appropriately. That is.
  • the heat treatment time of the yarn in the first stage heater may be set as appropriate depending on the type of heater, its length, temperature, etc. However, if the heat treatment time is too short, the crimp rate of the processed yarn is insufficient. In addition, stretched false twisted yarn due to fluctuations in tension, fluff of processed yarn, and stains on woven and knitted fabrics are likely to occur. On the other hand, if the heat treatment time is too long, the crimp rate tends to be too large. Usually, in the case of a non-contact type heater, a range of 0.04 to 0.12 seconds, particularly a range of 0.06 to 0.12 seconds is appropriate.
  • the draw ratio in draw false twisting is optimally from 1.4 to 2.4, and in the low-magnification zone outside this region, surging occurs and heat set spots due to yarn swinging occur, resulting in high magnification.
  • the processed yarn is flattened, and further processed fluff is generated, which is not preferable.
  • the false twist number T (times Zm) in the simultaneous simultaneous false twisting is set according to the fineness Y (dtex) of the false twisted yarn (1 5 000 to 3 5 000) ZY 1/2 , preferably (2 0 000 to 3 0 000) ⁇ ⁇ Set in the range of 1/2 .
  • the polyester undrawn yarn supplied to the drawing false twisting device is entangled between filaments in advance by an air flow. This air entanglement treatment may be performed separately from the drawing false twisting process. However, as shown in Fig.
  • the degree of entanglement is such that the degree of entanglement measured with a polyester false twisted yarn is 30 to 80 kenom, more preferably 50 to 70.
  • the degree of entanglement is less than 30m Zm, the filaments that make up the polyester undrawn yarn are poorly mixed and unraveled in the draw false twisting process (taken out of the original yarn package). Since the occurrence of single yarn breakage during twisting is increased, it is not preferable.
  • the degree of entanglement exceeds 80 ⁇ m, the entanglement between the filaments constituting the polyester false twisted yarn becomes too strong, and the yarn becomes hardened, which is not preferable.
  • the false twist disk is assembled into a false twist unit in which two disks are arranged on three axes.
  • the diameter of the false twist disk is less than 40 mm, the frictional damage due to the temporary burning disk on the yarn composed of the polyester composition increases rapidly, and the occurrence of yarn breakage and fluff increases.
  • the running angle of the yarn passing through the false twisted disc (the angle formed by the disc rotating shaft and the yarn running in contact with the outer circumference of the disc) is in the range of 30 to 48 degrees, especially 3 to 45 degrees. It is preferable to do. In this way, the yarn feeding action can be enhanced without lowering the twisting force of the disk, and twisting and deflaming can be performed in a stable state.
  • the contact length between the lowermost disk and the running yarn is set to 2.5 to 0.5 mm. This is effective in significantly reducing the processed fluff.
  • Fibers made of the above polyester composition are inferior in fibril resistance, and it is generally considered that such low fibril resistance fibers inevitably generate fuzz during processing. Because the fiber is processed with a fibril-resistant fiber structure in the strip, high-speed and stable false twisting can be performed without causing section deformation or fuzz during false twisting. It is possible to produce high-quality false twisted yarn.
  • the antistatic false twisted yarn of the present invention obtained as described above can be woven or knitted without twisting or without glue to obtain a good fabric. At this time, weaving and knitting are good, and there is no broken yarn and it is smooth. Further, according to the method of the present invention as described above, a polyester false twisted yarn excellent in antistatic property and durability can be produced efficiently and stably.
  • the antistatic special composite false twisted yarn of the present invention has a composite structure having a composite structure in which the outer periphery of the core yarn made of the antistatic polyester filament is substantially covered with a sheath yarn. It is a twisted yarn.
  • the sheath yarn constituting the composite false twisted yarn of the present invention is composed of the aromatic polyester as described above blended with a polymethylmethacrylate polymer and / or a polystyrene polymer.
  • the aromatic polyester is composed of ethylene terephthalate containing 75 mol% or more, especially 85 mol% or more of all repeating units, and its intrinsic viscosity (measured at 35 ° C using orthochlorophenol as a solvent). ) Is 0.7 or less, especially 0.7. 5 5 to 0.70 is preferred.
  • the aromatic polyester may have the same composition as the aromatic polyester constituting the core yarn, or may have a different composition.
  • polyesters may contain known additives such as pigments, dyes, matting agents, antifouling agents, fluorescent whitening agents, flame retardants, stabilizers, ultraviolet absorbers, and lubricants.
  • the polymethyl methacrylate polymer and polystyrene polymer blended in the aromatic polyester constituting the sheath yarn may be a non-crystalline polymer of atactic structure or syndiotactic structure, and a crystalline polymer of a isotactic structure. It may be. Further, a copolymer component may be contained within a range not hindering the object of the present invention.
  • the weight average molecular weight force is 800 to 200,000
  • melt index A (according to ASTM-D 1 2 3 8 temperature, temperature 2 30 ° C, load 3.8 kgf) is 10 Polymethyl methacrylate copolymer or isotactic polystyrene polymer having a content of ⁇ 30 g ZlO, or a weight average molecular weight of 800,000 to 200,000, and a melt index B (ASTM- As a particularly preferred example, a syndiotactic polystyrenic polymer or the like conforming to D 1 2 3 8, measured at a temperature of 30 ° C. and a load of 2.16 kgf) of 6 to 50 g and 10 minutes. Can do.
  • These polymers are preferable because they are excellent in thermal stability and dispersion stability when melt-spun to the polyester and melt-spun.
  • the inter-fiber friction resistance is estimated.
  • a woven or knitted fabric with a soft and smooth surface texture is realized, while the gloss at the time of dyeing is maintained at the same level as when it is not added.
  • the above poly The content of the mer needs to be 0.5 to 3.0% by weight in total based on the weight of the polyester, and is preferably 1.0 to 2.0% by weight. When the content is less than 0.5% by weight, the friction between the fibers and the fibers is not sufficiently lowered, and the texture of the resulting fabric becomes hard.
  • the composition of the sheath yarn has such an effect that it improves the feel of the surface of the composite yarn as described above, but the most important is that the sheath yarn is a polymethyl methacrylate polymer or the like.
  • the sheath yarn is a polymethyl methacrylate polymer or the like.
  • the elongation becomes higher than that of unblended yarns at the same spinning speed. Therefore, when these are subjected to composite false twisting, the blended yarns are easily placed in the sheath of the composite yarn, On the other hand, it is possible to obtain an effect that the antistatic yarns of the mating counterpart are easily arranged on the core.
  • polyester composition forming the sheath yarn may be added to a known additive, for example, a pigment, a dye, a decoloring agent, an antifouling agent, or a fluorescent whitening as long as the purpose of the present invention is not impaired.
  • Additives, flame retardants, stabilizers, UV absorbers, lubricants, etc. may be added.
  • the yarn group A of the core yarn and the yarn group B of the sheath yarn have different yarn lengths. It is preferable that the length is 10 to 20%, more preferably 12 to 18% longer than the strip group A.
  • the yarn group A is mainly arranged in the core portion of the composite false twisted yarn
  • the yarn group B is mainly arranged in the sheath portion to form a core-sheath structure.
  • the crimp rate of the composite false twisted yarn composed of the yarn group A and the yarn group B as described above is in the range of 2 to 8%, particularly in the range of 3 to 7%. It is necessary to have
  • the crimp rate By setting the crimp rate within this range, a woven or knitted fabric having a soft texture can be obtained.
  • the crimp rate is less than 2.0%, there are too many gaps between yarns in the case of a woven or knitted fabric, and it becomes easier for dyes to enter more than necessary at the time of dyeing. Since it becomes easy, it is not preferable.
  • it exceeds 8.0% the apricot on the surface of the resulting knitted or knitted fabric has a whitish tone and a feeling of flickering is not preferable.
  • the crimp ratios when the respective yarns are taken out from the yarn group A or the yarn group B constituting the composite false twisted yarn and measured individually are the same even if they are the same.
  • the yarn B tends to be arranged mainly in the sheath portion of the composite false twisted yarn. This is preferable because the texture of the smooth surface touch is improved.
  • the composite false twisted yarn of the present invention further has a charging friction pressure of 20:00 V or less, preferably in the range of 50000 V to 1500 V.
  • Charge friction pressure is a value measured by JISL 1 0 9 4 Chargeability test method B (friction band voltage measurement method) after anti-humidity adjustment and dyeing of composite false twisted yarn.
  • the frictional voltage is about 2200 V or less (preferably 1500 V or less), it can be evaluated that there is an antistatic effect.
  • the composite false twisted yarn of the present invention has a total fineness of 100 to 300 dte X (decitex), preferably 1 in order to make it easy to adjust the woven density in the case of a woven or knitted fabric.
  • a range of 3 0 to 2 7 0 dtex is appropriate.
  • the total fineness is less than 100 dte X, it is not preferable because it is difficult to obtain a sufficiently dense woven or knitted fabric. 1. If it exceeds 3 0 0 dte X, the basis weight of the woven or knitted fabric will be too large. It is not preferable for a woven or knitted fabric.
  • the total fineness ratio of the yarn group A and the yarn group B is preferably 40 60 to 60 40 for the former Z and the range of 45/55 to 55 Z45, in particular, for achieving finer expression.
  • the single fiber fineness of the yarn group A and the yarn group B may be the same or different, but the average single fiber fineness is 1.0 to 5.
  • O dtex preferably 1. It must be in the range of 2 to 4.0 dte X.
  • the average single fiber fineness is less than 1.0 d t e x, the mixing of the yarn group A and the yarn group B progresses too much, so that the surface of the resulting woven or knitted fabric becomes difficult to develop, which is not preferable.
  • the average single fiber fineness exceeds 5. O d t e x, the wind of the resulting knitted or knitted fabric is coarsely cured, and the surface becomes unpleasant.
  • the single yarn fineness of the yarn group that is more easily arranged in the core portion of the composite false twisted yarn is greater.
  • the polyester composite false twisted yarn for woven or knitted fabric of the present invention described above can be produced, for example, by the following method. That is, when a polyester multifilament is drawn by false twisting, a polyester undrawn yarn containing the polyoxyalkylene glycol (a) and the ionic antistatic agent (b) as a polyester yarn for processing ( ⁇ ') and the above-mentioned polymethylmethacrylate polymer and polyester undrawn yarn ( ⁇ ') blended with cocoon or polystyrene polymer, these are combined, and the following (1) to (4 ) At the same time satisfying the above conditions.
  • the number of false twists T (times Zm) shall be 1 5000ZY 1/2 ⁇ T ⁇ 35000 / Y 1/2 with respect to the fineness (Y dtex) of the false twisted yarn.
  • the low-stretch side undrawn yarn (') and the high-stretch side undrawn yarn ( ⁇ ') are spun and wound separately, and then combined and used for drawn false twisting.
  • the respective polymers may be melted and discharged simultaneously from different spinnerets, and each group of yarns may be combined and wound after being cooled and used for drawing false twisting.
  • the spinning speed is When melt-spun in the range of 2500 to 400 OmZ, particularly 300 0 to 3500 mZ, a polyester containing 0.5 to 3.0% by weight of a polymethylmethacrylate polymer and a polystyrene or polymer is A non-drawn yarn obtained by melt spinning polyester at the same speed is preferably 70 to 150%, particularly 90 to 30% larger because it can be obtained easily and efficiently.
  • a yarn containing an antistatic agent is easy to fibrillate and easily generate fuzz during false twisting.
  • the antistatic yarn is arranged in the core portion, and the core portion is wrapped with the yarn of the sheath portion.
  • the low elongation side undrawn yarn ( ⁇ ′) as described above and It is necessary to perform an air entanglement treatment on an undrawn yarn formed by combining or spinning and blending a high-stretch side undrawn yarn ( ⁇ ').
  • the air entanglement treatment may be performed in a separate process from the drawing false twisting process.
  • an interlace nozzle (4) is installed in the drawing false twisting machine and applied just before the drawing false twisting process. Is preferred. This suppresses the generation of neps due to the difference in elongation and has a positive effect on handling.
  • the interlaced nozzle (not shown) is used for air entanglement to the yarn that has been heat-set under false twisting so that the mixed fiber entanglement is completely uniformed and the core is aligned in the yarn length direction. Due to the effect of evenly wrapping the yarn with the sheath yarn, it has durable antistatic performance and can express a high-class feeling.
  • the surface of the fabric is drawn when the low elongation side yarn group ⁇ and high elongation side yarn group ⁇ are separated into a woven or knitted fabric during false twisting.
  • the degree of entanglement imparted by the interlace nozzle becomes too large, the entanglement between the single yarns will become too strong, and the texture when knitted or knitted will tend to be coarse, so it should be 80 pieces Zm or less. preferable.
  • the undrawn yarn subjected to the entanglement treatment is applied to a drawn false twisting machine equipped with a two-stage heater as shown in FIG. 1 to obtain a crimped polyester false twisted yarn.
  • the undrawn yarn (1) obtained by spinning and aligning two types of polyester compositions as described above is an interlace nozzle installed between two pairs of feed rollers (3, 3,). Air entanglement is performed by (4).
  • the undrawn yarn to which a predetermined entanglement is applied is applied by friction with the disk of the false twister (7) while being drawn between the feed roller ( 3 ') and the first delivery roller (8). Twisted.
  • the traveling yarn is a second stage heater (9) installed between the first delivery roller (8) and the second delivery roller (10), and is reheated as necessary.
  • the heat-set false twisted yarn is air entangled, it is wound up as a chiseled package (1 2) by a winding roller (1 1), and the desired antistatic polyester composite false twist A processed yarn is produced.
  • the first stage heater (5) and the second stage heater (9) are non-contact type in consideration of high-speed drawing false twisting.
  • the second stage heater (9) is often SW-OF F (not using the heater), but it may be used as required for the texture required for the processed yarn. Yes.
  • the false twister (7) force is a triaxial friction disc type as shown in Fig. 2 and the lowermost disc material located at the untwisting portion is ceramic, and the running yarn and It is important that the contact length with the disk is 2.5 to 0.5 mm, and that the disk has a diameter of 90 to 98% of the disk immediately upstream.
  • the false twisting tool (7) illustrated in Fig. 2 is a three-axis friction disk type with two false twisted disks (1 3) attached to three rotating shafts (15).
  • Each rotating shaft (15) is rotated at a predetermined speed by a timing belt (16) driven by a driving belt (17) to rotate each false twist disk (13).
  • at least the false-twisted disc (1 3), the lowest disc located in the untwisted portion (the lower disc attached to the left rotating shaft in the example of FIG. 2) is made of ceramic, and Use a disk whose diameter is 90 to 98% of the diameter of the disk immediately upstream (the lower disk attached to the central rotating shaft in the example in Fig. 2).
  • the contact length between the ceramic disk and the running yarn is 2.5 to 0.5 mm.
  • the lowermost disk material is preferably ceramic from the viewpoint of wear resistance.
  • the contact length between the running yarn and the disk should be 2.5 to 0.5 mm.
  • the contact area when the twisted yarn ends and the crimped yarn enters the final untwisted portion can be reduced as much as possible, the resistance can be reduced, and as a result, the fluff is significantly reduced.
  • Setting the diameter of the disk within the range of 90 to 98% of the disk diameter directly above reduces the resistance value when moving the yarn guide to the next step (specifically, heat set). It turned out that it was effective in moving smoothly.
  • setting the contact length between the running yarn and the disk to 2.5 to 0.5 mm is particularly effective in significantly reducing the processed fluff.
  • the calcining temperature in the present invention is required to be 1.70 to 300 ° C. If this temperature is less than 1700 ° C, the crimping performance is low and the texture is hard, and if it exceeds 300 ° C, the flatness of the processed yarn will be extremely advanced and processed fluff will be generated. It is not preferable.
  • the proper heater temperature here is based on a commercially available calorific processing machine (Teijin Seiki 2 16 6 HTS-1 5 V), non-contact type 1.0 to 1.5 m long
  • the yarn speed is assumed to be from 800 mZ min., Etc. Therefore, when using a special heater or processing at ultra high speed, the set temperature should be adjusted appropriately. That is.
  • the first heater in the twisted region is for improving the stretchability and false twisting property (twistability) of the unstretched yarn.
  • This temperature is 1 7 in the case of a non-contact heater. If the temperature is less than 0 ° C., the twistability is lowered and the desired crimp of the present invention cannot be imparted, and the texture of the woven or knitted fabric becomes paper-like. In addition, yarn breakage and fluff are more likely to occur during drawing false twisting, and crimped spots and stained spots are more likely to occur during dyeing. It ’s not good.
  • the first stage heater may be divided into the first half and the second half, but in the method of the present invention, the first half and the second half of the first stage heater are the same. Set to temperature.
  • the heat treatment time of the yarn in the first stage heater may be set as appropriate depending on the type of heater, its length, its temperature, etc., but if the heat treatment time is too short, the crimp rate tends to be insufficient. Also, stretched false twisted yarns, fuzz of false twisted yarns, and dyeing spots on woven or knitted fabrics due to fluctuations in tension tend to occur. On the other hand, if the length is too long, the crimp rate tends to be too large. For this reason, when heat-treating with a non-contact type heater, a range of 0.04 to 0.12 seconds is generally appropriate, particularly a range of 0.06 to 0.10 seconds.
  • the optimum zone is 1.4 to 1.7, and if it is outside this region, surging, generation, thermal set spots due to thread shaking, high magnification side Then, since the flatness of the processed yarn advances and processed fluff is generated, it is not preferable.
  • the number of false twists is preferably [(1 5000-35000) / Y 1/2 ] times Zn when the fineness of the composite false twisted yarn is Y (dte X), more preferably [(2 0000-30000) / Y 1 / 2 ] times Zm, set to the range. If the number of false twists is less than 1 5000ZY 1 2 nom, the fabric obtained when it becomes difficult to give a fine and strong crimp becomes paper-like and the texture becomes hard. If the number of false twists exceeds 35000ZY 1/2 times Zm, yarn breakage and fluffing increase. '
  • the drawing false twisting device which is mixed or spun and mixed.
  • air entanglement may be performed separately from the drawing false twisting process, an interlace nozzle is installed in the drawing false twisting apparatus as shown in Fig. 1, and air exchange is performed on the yarn immediately before drawing false twisting.
  • a method of performing an entanglement process is preferable.
  • the degree of air entanglement is such that the degree of entanglement measured with polyester false twisted yarn is 30 to 80 pieces Zn, more preferably 5 p to 70 pieces m.
  • the degree of entanglement is less than 30 pieces / m, the yarns constituting the polyester undrawn yarn are poorly mixed with each other, and during the drawing false twisting process, the yarn is broken and twisted during twisting and untwisting. It is not preferable because of the occurrence of single yarn breakage.
  • the degree of entanglement exceeds 80, the entanglement between the single yarns constituting the polyester false twisted yarn becomes too strong, and the yarn becomes hardened, which is not preferable.
  • the disk size of the false twisting tool is not particularly limited, but a disk having a diameter of 40 to 70 mm, preferably a disk having a diameter of 45 to 62 mm is preferable.
  • a disk having a diameter of 40 to 70 mm preferably a disk having a diameter of 45 to 62 mm is preferable.
  • two disks each are assembled and used as a false twist unit arranged on three axes.
  • the disc diameter is less than 4 Om m, the frictional damage caused by the disc in the yarn group A 'increases, and the occurrence of yarn breakage and fluff tends to increase.
  • the twisting force by the disk decreases, and it becomes difficult to provide sufficient crimp.
  • the running angle of the yarn passing through the disc (the angle formed by the disc rotating shaft and the yarn running in contact on the outer circumference of the disc) is in the range of 30 to 48 degrees, especially 3 to 45 degrees. It is preferable to do. In this way, the yarn feeding action can be enhanced and the twisting and untwisting can be performed in a stable state without reducing the twisting force of the disk.
  • a yarn containing an antistatic agent is easily fibrillated and easily generates fuzz during false twisting.
  • the antistatic yarn is arranged in the core portion, and the core portion is wrapped with the sheath portion yarn. Minimizing deformation during processing makes it difficult for fluff to come out during processing, and because of the selection of false twisting conditions as described above, combined with both, extremely good composite false twisted yarn with very little fluff generation Is obtained.
  • the composite false twisted yarn of the present invention obtained in this way can be made into a woven fabric with water jet room, etc. without twisting, without glue, and at this time, weaving property is good, and there is no yarn breakage. Smooth weaving.
  • the fabric comprising the polyester composite false-twisted yarn of the present invention has good antistatic properties, and has a very deep and high-class feeling in the sensory evaluation, and is soft and has a good fabric. It will be of a spanish-like texture that has a unique appearance.
  • each measured value shown in the example is a value measured by the following method.
  • “parts” means parts by weight unless otherwise specified.
  • the aromatic polyester composition was dissolved in ortho-chlorophenol and measured at 35 using a tuberde viscometer.
  • the number of times that the melt spinning was performed for one week in the melt spinning facility was recorded, and the number of times of spinning break per spindle per day was regarded as the spun yarn.
  • thread breakage due to human or mechanical factors was excluded from the number of breaks.
  • Crimp rate A polyester false twisted yarn sample was wound on a cassette frame with a tension of 0.04 4 c N / dte X to create a cassette of about 3 300 dtex. Two loads of 0.0 1 7 7 c N dte X and 0.1 7 7 c N / dtex were applied to one end of the cassette and the length SO (cm) after 1 minute was measured. The sample was treated in boiling water at 100 ° C for 20 minutes with the 0.17 7 c N / dte X load removed. After boiling water treatment 0. 0 1 7 7 c Remove the N / dtex load, let it dry naturally for 24 hours, and again 0.
  • Crimp rate (%) [(S 1-S 2) / S O] X 1 0 0
  • Level 3 A crisp or hard feel.
  • Rebenore 2 Span is slightly poor.
  • Level 3 A flat yarn-like feel or a hard feel.
  • the test piece was rubbed with a friction cloth while rotating, and the generated charged voltage was measured.
  • the specific procedure conforms to J IS L 1 0 94 Chargeability Test Method B (Friction Band Voltage Measurement Method). If this frictional voltage is about 2000 V or less (preferably 1 500 V or less), it is evaluated that there is an antistatic effect.
  • the melt viscosity (MVPM, MVP S and MVP Es) of the polymethylmethacrylate polymer, polystyrene polymer and polyester is Shimadzu flow tester manufactured by Shimadzu Corporation. Using a 1 mm long orifice, measurement was performed under a cylinder temperature of 295 ° C and a load of 20 KG. This is the value obtained by detecting the extrusion pressure at that time and extrapolating it to the viscosity equation.
  • the melt viscosity MVPE s of the measured substrate polyester was 140.000 poise. The ratio of the melt viscosity of the polymethyl methacrylate polymer or polystyrene polymer measured for this value was calculated.
  • the measurement of the elongation is performed by sampling the yarn groups A and B separately.
  • Direct elongation measurement was carried out in the state of fiber.
  • the measured values of the elongation of the sample yarn after blending tended to be 10 to 20% lower than those of the separately sampled yarn, but the difference in elongation was the same. It is.
  • a load of 0.1 7 6 c NZd tex (0.2 g / de) was applied to one end of a 50 cm composite false twisted yarn, suspended vertically, and marked accurately at intervals of 5 cm. .
  • the load was removed and the marking part was cut accurately to make 10 samples.
  • the above measurement was performed on 10 samples, and the average value of each was defined as L b (scabbard yarn length) and L a (core yarn length), and the yarn length difference was calculated by the following formula.
  • Dimethyl terephthalate 100 parts, Ethylene glycol 60 parts, Acetic acid Lucium monohydrate 0.06 parts (0.0 6 6 mol% with respect to dimethyl terephthalate) and Cobalt acetate tetrahydrate as color adjuster 0.0 1 3 (terephthalic 0.0 1 mol per le dimethyl 0/0) of the reaction were charged into an ester exchange reaction can over 4 hours under an atmosphere of nitrogen gas 2 from 1 4 0 ° C The temperature was raised to 20 ° C, and the ester exchange reaction was carried out while distilling out the methanol produced in the reaction vessel out of the system.
  • the dimethyl polysiloxane as a reaction mixture as a stabilizer trimethyl 0.0 5 8 parts of phosphoric acid (0.0 8 0 mole 0/0 for dimethyl terephthalate) in and defoamer 0. 0 2 4 copies were added.
  • the water-insoluble polyoxyethylene-based polyether represented by the following chemical formula ⁇ anti-turtle agent (a) ⁇ and sodium dodecylbenzenesulfonate ⁇ anti-static agent (b) ⁇ are each vacuumed in parts by weight as shown in Table 1.
  • the polycondensation reaction was allowed to proceed for 240 minutes, and then 0.4 parts of “Ilganox” manufactured by Cibakaigi Co., Ltd. as an antioxidant was added under vacuum, and then The polycondensation reaction was further performed for 30 minutes.
  • the polymer obtained by adding the antistatic agent in the polymerization reaction step was formed into a chip by a conventional method.
  • This antistatic agent-containing aromatic polyester composition had an intrinsic viscosity of 0.65 7 and a softening point of 2 58 ° C. HO ⁇ -CHC 0) -m -CH. CH 4 O One C j H 2 i + I
  • the chip thus obtained was dried by a conventional method.
  • the dried chips were supplied to a melt spinning facility, melted in a conventional manner, and introduced into a spin pack through a spin block. It is discharged from a spinneret with 36 circular discharge holes built into the spin pack, cooled and solidified with cooling air from a normal cross-flow type spinning cylinder, and a single spinning oil is applied while applying spinning oil.
  • the yarns were bundled as yarns and taken up at the speed shown in Table 1 to obtain polyester undrawn yarns having 140 dtex / 36 filaments. Table 1 shows the birefringence of each undrawn yarn.
  • the polyester unstretched yarn is stretched by Teijin Seisakusho Co., Ltd., drawn false twisting machine 2 1 6-ply “HT S—15 VJ, and as shown in FIG. In the subsequent stage, air entangled so that the entanglement degree of the processed yarn becomes 50 kenom at a flow rate of 60 n L / min while passing through an interlace nozzle having a pressure air blowing hole with a hole diameter of 1.8 mm.
  • the polyester false twisted yarn of 8 4 dte xZ36 filament average single yarn fineness 2.1 dtex was obtained. It is shown in Table 1.
  • the false twisting tool used in this case is a triaxial friction disc type X shown in Fig. 2 and the bottom disc located at the untwisting section is made of ceramic.
  • the contact length between the disc and the running yarn is 1.5 mm and the distance
  • the diameter of the disc is 57 mm, which is 95% of the diameter of the disk directly above.
  • the diameter of the polyurethane is 6 O mm and the thickness is 9 mm. What provided the false twist disk was used.
  • a knitted fabric was manufactured using the obtained false twisted yarn, and the antistatic property was measured. Table 1 shows the results of the antistatic performance of the knitted fabric.
  • polyester false twisted yarns manufactured outside the conditions of the present invention were evaluated as similar fabrics (Comparative Examples 1 to 5).
  • Method B (V) 1000 1100 800 2800 1850 3200 2100 2000 Texture, soft feeling
  • Example 2 The polyester undrawn yarn obtained in Example 2 was subjected to drawn false twisting under the conditions shown in Table 2, and polyester false twisted yarn having physical properties shown in Table 2 was obtained.
  • Table 2 shows the stretched false twisted yarn and the occurrence of fluff. Then, the quality of these polyester false twisted yarns was evaluated by the method described above, and the results shown in Table 2 were obtained.
  • the unstretched polyester yarn obtained in Example 2 was subjected to a change in the lowermost disk contact length in false twisting and the ratio of the disk diameter to the diameter of the upstream disk (Standard) (% compared to St).
  • Stretch false twisting was performed under the conditions shown in Table 3, and polyester false twisted yarns having physical properties shown in Table 3 were obtained.
  • Table 3 shows the stretched false twisted yarn and fluff generation at this time. The quality of these polyester false twisted yarns was evaluated by the method described above, and the results shown in Table 3 were obtained. '
  • St indicates the breaking strength (cNZ dte X) and EL indicates the breaking elongation (%).
  • the polyester undrawn yarn obtained in Example 2 was prepared under the conditions shown in Table 4 for the false twist number XY 1 Z 2 ⁇ where Y is the false twist yarn fineness (dte X) ⁇ and false twisting temperature. Except for the above, a false false twisting process was performed under the same conditions as in Example 2 to obtain polyester false twisted yarns shown in Table 4. Table 4 shows the stretched false twisted yarn and the occurrence of fluff. In addition, the quality of these polyester false twisted yarns was evaluated by the method described above, and the results shown in Table 4 were obtained.
  • a 1 is a dry polymer containing the water-insoluble polyoxyethylene-based polyether ⁇ antistatic agent (a) ⁇ and sodium dodecylbenzenesulfonate ⁇ antistatic agent (b) ⁇ obtained by the method of Example 1. .
  • PET polyethylene terephthalate
  • PS AS TM-D 1 2 3 8 Indetas (measured at 300 ° C, load 2.16 kgf) is 10 g, 10 min) or polymethyl methacrylate polymer (PMMA: Menoto index according to AS TM-D 1 2 38 (temperature) 2) Measured at 30 ° C under a load of 3.8 kgf) and prepared polyethylene terephthalate pellets in the amounts shown in Table 5 and dried in the usual way (this is designated as dry polymer B1).
  • Comparative Examples 15 to 17 Similar experiments were performed outside the conditions of the present invention (Comparative Examples 15 to 17). As is apparent from Table 5, in Comparative Example 15 where the amount of polystyrene (PS) added is less than 0.5% by weight, the difference in elongation between the two undrawn filaments was less than 70%, and Further, the difference in yarn length between the yarn group A and the yarn group B of the false twisted yarn was less than 10%. .
  • PS polystyrene
  • a composite false twisted yarn was obtained.
  • the core of this polyester composite false twisted yarn is the low elongation side yarn group A (90 dte X / 3 6 filaments) made of polymer A 1 and the sheath is made of polymer B 1 Side yarn group B (90 0 dte xZ4 8 filaments).
  • polyester composite false twisted yarns were made into woven fabrics by the method described later, and their quality was evaluated. The results are shown in Table 5. As is clear from Table 5, the woven fabric in which the amount of polystyrene added in Comparative Example 15 was less than 0.5% by weight had a hard texture. In Comparative Example 2 in which the amount of polystyrene added exceeded 3.0% by weight, stretched false twisted yarns and fluff were frequently generated. Also, a knitted fabric was manufactured using the obtained composite false twisted yarn, and the antistatic property was measured. Table 5 also shows the results of antistatic performance.
  • the composite false twisted yarn was relaxed with boiling water for 20 minutes using a liquid dyeing machine, followed by a preset treatment, followed by further dyeing and final set treatment.
  • a fabric made of polyester composite false twisted yarn was used.
  • the fabric is relaxed with boiling water for 20 minutes using a liquid dyeing machine.
  • the Al force was reduced with a 3.5% by weight aqueous sodium hydroxide solution at the boiling temperature (weight reduction rate 20%).
  • dyeing and final set treatment were performed to obtain a fabric made of polyester composite false twisted yarn.
  • polyester undrawn yarn obtained in Example 15 was subjected to drawn false twisting under the false twisting conditions shown in Table 6 to obtain polyester composite false twisted yarns having physical properties shown in Table 6.
  • Table 6 shows the stretched false twisted yarn and the occurrence of fluff.
  • the quality of these polyester composite false twisted yarns was evaluated by the method described above, and the results shown in Table 6 were obtained. At this time, it was found that it is important from the viewpoint of anti-static properties to wrap the core yarn (anti-static component) and reduce the deformation to prevent the fluff from coming out.
  • Example 14 the same experiment was performed by changing the thread contact length of the most downstream disk and the ratio of the disk diameter to the diameter (Standard) of the disk immediately upstream of the disk (% of St). It was. The results are shown in Table 7.
  • St contrast indicates the ratio (%) of the diameter of the lowermost disk to the diameter (Standard) of the disk immediately upstream.
  • St / EL% St is the breaking strength (cN / dtex) and EL is the breaking elongation (%).
  • the polyester undrawn yarn obtained in Example 15 was subjected to drawing false twisting under the same drawing false twisting conditions as in Example 2 except that the number of false twists and the false twisting temperature were as shown in Table 8.
  • Polyester composite false twisted yarns shown in Table 8 were obtained.
  • Table 8 shows the stretched false twisted yarn and the occurrence of fluff.
  • the quality of these polyester composite false twisted yarns was evaluated by the method described above, and the results shown in Table 8 were obtained.
  • the “twist number” shown in Table 8 is the value of the twist number X (Y) 1/2 , and the total fineness (Y) of the composite false twisted yarn was 1800 dtex. In these experiments as well, it was confirmed that it is important from the viewpoint of anti-static properties to wrap the core yarn anti-static component and reduce deformation to prevent fluff from coming out. ,
  • the polyester false twisted yarn of the present invention contains the above antistatic agent, excellent antistatic properties are exhibited.
  • the antistatic agent migration is less likely to occur by stable false twisting at high speed without generating filament section deformation and fuzz during false twisting. Antistatic performance is exhibited outside.
  • a polyester false twisted yarn that can be made into a span-like polyester fabric excellent in antistatic properties. Moreover, according to the production method of the present invention, such antistatic false twisted yarn can be produced stably with high productivity.
  • the polyester composite false twisted yarn of the present invention contains two antistatic agents (a) and (b) as described above in the core yarn (A). Sex is expressed. That is, in the composite false twisted yarn, since the core-sheath structure including the core yarn (A) is stably formed in the yarn length direction, the antistatic property is unexpectedly exhibited in the processed yarn. Is done. This effect is particularly noticeable in the case of a woven fabric because it is not affected by twisting.
  • the core yarn (A) (hereinafter simply referred to as “core yarn”) that exhibits antistatic properties is wrapped in the sheath yarn (B) (hereinafter simply referred to as “sheath yarn”). Therefore, the antistatic component is wrapped during false twisting, and the deformation is reduced so that fluff does not come out during processing. This maintains good antistatic properties and reduces the occurrence of fluff during false twisting. , Improve productivity, and even fabric In this case, it becomes a factor of excellent washing durability. As a result, the present invention has a very good bulkiness and span feeling, and excellent anti-static properties, especially for applications where there is a high need to suppress static quirks such as school uniforms, uniforms, and dust proof clothing.
  • a polyester composite false twisted yarn can be provided that can be made into an excellent spunlike polyester fabric and has excellent handleability in the subsequent process.

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

Abstract

La présente invention concerne un fil multifilament non tendu réalisé à partir d'un polyester aromatique de type polyéthylène térephtalate (PET) contenant un polyéther de polyoxyalkylène et un compose ionique organique qui est tendu et simultanément soumis à une fausse torsion dans des conditions spécifiques. La fausse torsion est réalisée de manière stable à grande vitesse sans entraîner une déformation de section ou de débourrage pour procurer au fil une structure fibreuse présentant une excellente texture et un caractère non apte à la fibrillation. Ainsi, on produit un fil de fausse torsion polyester présentant des propriétés antistatiques sur une longue durée. Le fil non tendu en combinaison avec un fil polyester non tendu comportant un polymère poly(méthyle méthacrylate)et/ou un polymère polystyrène est tendu et simultanément soumis à une fausse torsion dans des conditions spécifiques pour produire de manière stable à grande vitesse un fil de fausse torsion composite exempt de débourrage, présentant un excellent volume, procurant un toucher de filé, et possédant des propriétés antistatiques sur une longue durée. Ce fil de fausse torsion composite est particulièrement utile dans des applications où l'on souhaite réduire l'électricité statique, telles que pour des uniformes d'écoliers, des uniformes, et des vêtements anti-poussière.
PCT/JP2007/064128 2006-07-14 2007-07-11 Fil de fausse torsion polyester antistatique, son procédé de production, et fil de fausse torsion composite spécial antistatique comprenant le fil de fausse torsion polyester antistatique WO2008007803A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CA002658091A CA2658091A1 (fr) 2006-07-14 2007-07-11 Faux fil retors antistatique en polyester, procede de production et faux fil retors conjugue antistatique special comprenant ledit faux fil retors
US12/307,895 US20090308048A1 (en) 2006-07-14 2007-07-11 Antistatic polyester false twisted yarn, process for its production, and antistatic special conjugated false twisted yarn comprising antistatic polyester false twisted yarn
CN2007800267148A CN101490322B (zh) 2006-07-14 2007-07-11 抗静电性聚酯假捻加工纱线和其制备方法以及含有该抗静电性聚酯假捻加工纱线的抗静电性特殊复合假捻加工纱线
EP07768434A EP2042626A4 (fr) 2006-07-14 2007-07-11 Fil de fausse torsion polyester antistatique, son procédé de production, et fil de fausse torsion composite spécial antistatique comprenant le fil de fausse torsion polyester antistatique

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2006194238A JP4818004B2 (ja) 2006-07-14 2006-07-14 制電性ポリエステル仮撚加工糸及びその製造方法
JP2006-194238 2006-07-14
JP2006-195539 2006-07-18
JP2006195539A JP4818007B2 (ja) 2006-07-18 2006-07-18 制電性を有する特殊複合仮撚加工糸及びその製造方法

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US (1) US20090308048A1 (fr)
EP (1) EP2042626A4 (fr)
KR (1) KR20090033471A (fr)
CA (1) CA2658091A1 (fr)
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WO2009144151A1 (fr) * 2008-05-31 2009-12-03 Oerlikon Textile Gmbh & Co. Kg Machine de fausse torsion
WO2010061594A1 (fr) * 2008-11-27 2010-06-03 帝人ファイバー株式会社 Fibres ultrafines antistatiques et procédé de production de ces fibres
JP2010126837A (ja) * 2008-11-27 2010-06-10 Teijin Fibers Ltd 紫外線遮蔽効果を有する制電性極細仮撚り加工糸およびその製造方法
JP2020120918A (ja) * 2019-01-30 2020-08-13 株式会社エアウィーヴ 面ファスナーおよび寝具カバー

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EP2078771B1 (fr) * 2006-10-30 2010-12-08 Teijin Fibers Limited Fil de polyester à fausse torsion et denier ultrafin de type âme-enveloppe antistatique, son procédé de production et tissus hydrofuges antistatiques comprenant le fil
KR101439069B1 (ko) * 2010-07-29 2014-09-05 아사히 가세이 셍이 가부시키가이샤 내마모성 폴리에스테르 섬유 및 직편물
CN106245180A (zh) * 2016-08-19 2016-12-21 桐乡市中洲化纤有限责任公司 一种特种水晶棉纤维的生产方法及装置
CN112695429A (zh) * 2020-11-30 2021-04-23 太仓杰希塑化有限公司 一种长效抑菌抗静电涤纶复合低弹丝
CN114318618A (zh) * 2021-12-30 2022-04-12 杭州萧山东达纺织有限公司 一种抗静电dty丝的制备工艺

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009144151A1 (fr) * 2008-05-31 2009-12-03 Oerlikon Textile Gmbh & Co. Kg Machine de fausse torsion
WO2010061594A1 (fr) * 2008-11-27 2010-06-03 帝人ファイバー株式会社 Fibres ultrafines antistatiques et procédé de production de ces fibres
JP2010126837A (ja) * 2008-11-27 2010-06-10 Teijin Fibers Ltd 紫外線遮蔽効果を有する制電性極細仮撚り加工糸およびその製造方法
EP2360301A1 (fr) * 2008-11-27 2011-08-24 Teijin Fibers Limited Fibres ultrafines antistatiques et procédé de production de ces fibres
EP2360301A4 (fr) * 2008-11-27 2012-10-03 Teijin Fibers Ltd Fibres ultrafines antistatiques et procédé de production de ces fibres
JP2020120918A (ja) * 2019-01-30 2020-08-13 株式会社エアウィーヴ 面ファスナーおよび寝具カバー
JP7270396B2 (ja) 2019-01-30 2023-05-10 株式会社エアウィーヴ 面ファスナーおよび寝具カバー

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CA2658091A1 (fr) 2008-01-17
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US20090308048A1 (en) 2009-12-17
EP2042626A1 (fr) 2009-04-01
KR20090033471A (ko) 2009-04-03

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