WO2019208404A1 - Polyamide monofilament - Google Patents

Polyamide monofilament Download PDF

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Publication number
WO2019208404A1
WO2019208404A1 PCT/JP2019/016728 JP2019016728W WO2019208404A1 WO 2019208404 A1 WO2019208404 A1 WO 2019208404A1 JP 2019016728 W JP2019016728 W JP 2019016728W WO 2019208404 A1 WO2019208404 A1 WO 2019208404A1
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WIPO (PCT)
Prior art keywords
yarn
acid
weight
less
oil
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PCT/JP2019/016728
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French (fr)
Japanese (ja)
Inventor
貴大 佐藤
純郎 山口
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東レ株式会社
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Priority to JP2019536240A priority Critical patent/JPWO2019208404A1/en
Priority to EP19792622.3A priority patent/EP3786348A4/en
Publication of WO2019208404A1 publication Critical patent/WO2019208404A1/en

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    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01FCHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F11/00Chemical after-treatment of artificial filaments or the like during manufacture
    • D01F11/04Chemical after-treatment of artificial filaments or the like during manufacture of synthetic polymers
    • D01F11/08Chemical after-treatment of artificial filaments or the like during manufacture of synthetic polymers of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06MTREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M13/00Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/02Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with hydrocarbons
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06MTREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M13/00Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/10Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
    • D06M13/224Esters of carboxylic acids; Esters of carbonic acid
    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01FCHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F6/00Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/58Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
    • D01F6/60Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyamides
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06MTREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M2101/00Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
    • D06M2101/16Synthetic fibres, other than mineral fibres
    • D06M2101/30Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M2101/34Polyamides

Definitions

  • the present invention relates to a polyamide monofilament capable of obtaining a high-quality woven fabric requiring high precision such as a mesh woven fabric and a filter without losing yarn or stopping a loom and having good weaving properties.
  • Polyamide fibers such as polycapramide and polyhexamethylene adipamide are widely used for clothing and industrial materials because of their excellent mechanical properties, chemical resistance, and heat resistance. In industrial materials, it is widely used especially for filters using monofilament fabrics (screen woven fabrics), and there are a wide variety of uses such as medical, drinking water filtration, automotive bag filters, and acoustics.
  • Patent Document 1 uses a pair of oil supply guides that are arranged with a monofilament thread sandwiched therebetween and shifted in phase with respect to the running direction, thereby performing uniform oil supply in the yarn circumferential direction, and the longitudinal direction of the yarn.
  • a production method has been proposed that stabilizes the adhesion of oil agents and provides monofilaments of stable quality.
  • Patent Document 2 in a drum-shaped package made of polyamide monofilament, the yarn dynamic friction coefficient and the drum winding width are regulated, so that there is no yarn dropping on the drum end surface, and there is no fluctuation in the instantaneous tension at the time of yarn unwinding.
  • a polyamide monofilament yarn package that is suppressed and the occurrence of horizontal shrinkage is suppressed.
  • Patent Document 3 proposes a polyamide monofilament and a fiber package thereof in which the tension when passing through the yarn guide during aging is low and the generation of static electricity is suppressed by defining the rubbing tension and static electricity generation amount of the monofilament. ing.
  • the screen silk fabric is woven mainly by a projectile weaving machine.
  • the monofilaments described in Patent Documents 1, 2, and 3 are used when weft yarns are inserted. Comes out of the cap of the projectile, the loom stops, and there is a problem that the corresponding part becomes a defect.
  • the present invention is intended to solve the above-described problems, and an object of the present invention is to provide a polyamide monofilament that suppresses yarn dropout in the weaving process and can provide excellent weaving properties and fabric quality.
  • the above problem can be solved by the following configuration.
  • the amount of the oil agent adhering is 0.1 to 1.5% by weight, and the proportion of the component consisting of hydrocarbon and fatty acid alkyl ester having a weight average molecular weight of 500 or less in the adhering oil agent is 40 per total of the oil agent A polyamide monofilament characterized by being less than or equal to weight percent.
  • FIG. 1 is a schematic view showing an example of a process for producing a polyamide monofilament according to the present invention.
  • the polyamide used in the polyamide monofilament of the present invention is a high molecular weight product in which a so-called hydrocarbon group is connected to the main chain through an amide bond, and may be produced by polycondensation reaction using aminocarboxylic acid or cyclic amide as a raw material. Alternatively, it may be produced by a polycondensation reaction using dicarboxylic acid and diamine as raw materials.
  • these raw materials are collectively referred to as monomers.
  • the monomer is not limited to petroleum-derived monomers, biomass-derived monomers, mixtures of petroleum-derived monomers and biomass-derived monomers, and the like.
  • polyamides examples include, but are not limited to, polycaprolactam, polyundecanolactam, polylauryllactam or polyhexamethylene adipamide, polyhexamethylene sebacamide, polyhexamethylene dodecandiamide, and the like. Of these, polyhexamethylene adipamide is preferred because of its excellent yarn forming properties and mechanical properties.
  • the polyamide in the present invention may be copolymerized or mixed with the second and third components in addition to the main component within the range not departing from the object of the present invention.
  • copolymer components include aliphatic dicarboxylic acids, alicyclic dicarboxylic acids, aromatic dicarboxylic acids, aliphatic diamines, alicyclic diamines, and structural units derived from aromatic diamines. Is preferably 10 mol% or less, and more preferably 5 mol% or less, as the monomer amount of the copolymerization component with respect to the total monomer amount.
  • the viscosity of the polyamide in the present invention may be selected within a common sense range for producing industrial fibers, but it is preferable to use a polymer having a 98% sulfuric acid relative viscosity of 2.0 to 4.0. . If it is 2.0 or more, sufficient strength can be obtained when it is made into fibers, and if it is 4.0 or less, the extrusion pressure of the molten polymer at the time of spinning and the rate of increase over time can be suppressed, and production equipment It is preferable because an excessive load on the base and an exchange period of the base can be extended and productivity can be secured. Moreover, when a fabric is produced using the fibers obtained by setting it in such a range, a fabric having the strength that the product strength of the fabric, for example, the tear strength, can withstand practical use can be obtained.
  • additives for improving productivity such as heat resistance may be blended, matte, moisture absorption, antibacterial, ultraviolet shielding, heat insulation.
  • Additives having functions such as may be blended.
  • the content of these additives is preferably 1.0% by weight or less based on the polyamide due to the physical properties of the monofilament.
  • the spinning oil used in the polyamide monofilament of the present invention is mainly composed of a solvent, a smooth component and an antistatic component.
  • the solvent is used to dissolve and disperse active ingredients such as the smoothing component and antistatic component of the spinning oil, and this solvent volatilizes from the surface of the yarn by heat treatment in the yarn manufacturing process. Since the amount of the active ingredient per oil agent component on the yarn surface increases as the solvent volatilizes, it is preferable to use a solvent that easily volatilizes.
  • the antistatic component is used to suppress static electricity generated on the yarn surface, and known ionic surfactants such as anionic surfactant, cationic surfactant, and amphoteric surfactant are used.
  • the smooth component improves the lubricity of the yarn surface, suppresses fluctuations in tension and breakage during yarn unwinding, passing through the yarn path guide, and passing between warps in the weaving process, and stabilizes the processability.
  • smoothing components ester-type, hydrocarbon-type, ether-ester-type, etc., ether-type nonionic surfactants having a polyoxyalkylene group in the molecule, polyhydric alcohol partial ester-type nonionic surfactants, An oxyalkylene polyhydric alcohol fatty acid ester type nonionic surfactant or the like is used.
  • Screen woven fabrics are woven mainly with a projectile loom.
  • This projectile loom inserts a weft thread by punching out a metal part called a projectile that holds the thread with a polyurethane resin cap. ing.
  • a specific component in the oil adhering to the surface of the yarn penetrates into the projectile cap. It has been found that the thread gripping force decreases due to the deformation of the projectile cap due to the penetration of a specific component.
  • This specific component is a component comprising a hydrocarbon and a fatty acid alkyl ester in an oil agent, and this component tends to occur when the weight average molecular weight of this component is 500 or less. That is, since hydrocarbons and fatty acid alkyl esters have few polar groups in the molecule and high affinity with polyurethanes having little polar groups in the molecule, these components are likely to penetrate into the projectile cap made of polyurethane. When penetrating into the projectile cap, these components enter between the polyurethane molecular chains constituting the projectile cap and cause the molecular chains to expand, causing deformation of the projectile cap.
  • the oil agent attached to the yarn is stable in the process. It has become important to control the ratio of the component consisting of a hydrocarbon having a weight average molecular weight of 500 or less and a fatty acid alkyl ester per oil component.
  • the proportion of the component consisting of hydrocarbon and fatty acid alkyl ester having a weight average molecular weight of 500 or less in the adhering oil agent is 40% by weight or less per oil agent total component.
  • the component consisting of a hydrocarbon having a weight average molecular weight of 500 or less and a fatty acid alkyl ester in the oil agent is also a smooth component for imparting smoothness to the yarn, and these smooth components are formed on the surface of the yarn in a film or other shape. By being present, a smoothing effect such as reducing the friction of the yarn is brought about. In general, the higher the weight average molecular weight of the smooth component, the better the film forming ability and the smooth component tends to remain on the yarn surface.
  • the weight average molecular weight of the smoothing component used is preferably 200 to 500, the component consisting of hydrocarbon and fatty acid alkyl ester having a weight average molecular weight of 500 or less in the oil agent adhering to the surface of the yarn is It is preferable that 5% by weight or more adhere. When the amount is 5% by weight or more, the smoothness of the yarn is sufficient, the running property of the yarn in the loom becomes good, and no sink marks or streaks are produced in the fabric.
  • the polyamide monofilament of the present invention has an oil agent adhesion amount of 0.1 to 1.5% by weight per yarn weight. If it exceeds 1.5% by weight, oil droplets will be generated due to excessive adhesion of the oil agent when passing through the yarn path guide in the weaving process, and the threadability due to the oil droplets will be lost, resulting in poor processability.
  • the amount is less than 0.1% by weight, the surface of the yarn is scraped when passing through the yarn path guide in the weaving process due to the lack of the oil component on the surface of the yarn, and monomeric precipitates (generally called scum) Will occur. When this scum accumulates on the guide, thread breakage occurs and process passability deteriorates.
  • the tension of the running yarn is fluctuated by the accumulated scum, and sink marks and streaks are generated in the corresponding portion, or the scum is taken by the yarn and enters the woven fabric, so that the corresponding portion becomes a defect.
  • the oil agent adhesion amount is preferably 0.1 to 0.5% by weight per yarn weight.
  • the variation rate of the oil agent adhesion amount in the yarn longitudinal direction is 20% or less.
  • the amount of oil agent adhesion locally does not increase in the longitudinal direction of the yarn, and excessive components of hydrocarbons having a weight average molecular weight of 500 or less and a fatty acid alkyl ester due to excessive oil agent locally. Since the adhesion to the projectile cap can be suppressed, the deformation of the cap can be suppressed and the thread dropout during weaving can be suppressed. Further, the productivity is improved because the number of times the loom stops is reduced by suppressing the yarn dropout.
  • the adhering component composed of hydrocarbon and fatty acid alkyl ester having a weight average molecular weight of 500 or less is not limited in molecular structure other than the molecular weight.
  • the hydrocarbon is used as a solvent for adjusting the oil agent in addition to the above-described smoothing component.
  • the solvent of the oil agent is easily volatilized. It becomes difficult to remain on the surface.
  • the easiness of volatilization of this hydrocarbon has a correlation with the viscosity, that is, the lower the viscosity, the easier it is to volatilize.
  • a known method for measuring the viscosity of hydrocarbons is to use a Saybolt universal viscometer.
  • the viscosity measured by the Saybolt universal viscometer is expressed in unit Saybolt universal seconds (SUS), and the smaller the SUS, the smaller the viscosity.
  • the upper limit of the viscosity of the hydrocarbon used in the solvent of the spinning oil used in the polyamide monofilament of the present invention is not limited, but is preferably 100 SUS or less from the viewpoint of the above volatility.
  • the lower limit of the viscosity is not limited, but is preferably 30 SUS or more from the viewpoint of management of the spinning oil.
  • fatty acid alkyl esters used in the present invention mainly include polyhydric alcohol fatty acid esters, polycarboxylic acid aliphatic alcohol esters, and ester compounds having a structure in which an aliphatic monohydric alcohol and a fatty acid are ester-bonded.
  • the polyhydric alcohol fatty acid ester is an ester of an aliphatic dihydric alcohol having 2 to 6 carbon atoms or an aliphatic trivalent alcohol having 3 or 4 carbon atoms and an aliphatic monovalent carboxylic acid having 4 to 24 carbon atoms. Moreover, it is a compound which does not have a polyoxyalkylene group in a molecule
  • the polycarboxylic acid aliphatic alcohol ester is an ester of an aliphatic divalent carboxylic acid having 2 to 6 carbon atoms and an aliphatic monohydric alcohol having 4 to 24 carbon atoms, and has a polyoxyalkylene group in the molecule. It is a compound that does not.
  • the ester compound having a structure in which an aliphatic monohydric alcohol and a fatty acid are ester-bonded is an ester of an aliphatic monovalent carboxylic acid having 4 to 24 carbon atoms and an aliphatic monohydric alcohol having 4 to 24 carbon atoms.
  • the alcohol and fatty acid constituting the fatty acid alkyl ester are as follows.
  • Examples of the aliphatic dihydric alcohol having 2 to 6 carbon atoms include ethylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, propylene glycol, dipropylene glycol, tripropylene glycol, 1,2-butanediol, 1,3 -Butanediol, 1,4-butanediol, 2-methyl-1,3-propanediol, 1,5-pentanediol, 1,6-hexanediol and the like.
  • Examples of the aliphatic trihydric alcohol having 3 or 4 carbon atoms include glycerin and trimethylolpropane.
  • the aliphatic monohydric alcohol having 4 to 24 carbon atoms may be saturated or unsaturated, and the number of unsaturated bonds is not particularly limited. Moreover, 1 type (s) or 2 or more types may be used for an aliphatic monohydric alcohol, and a saturated aliphatic alcohol and an unsaturated aliphatic alcohol may be used together.
  • Aliphatic monohydric alcohols include butyl alcohol, pentanol, hexanol, heptanol, octyl alcohol, isooctyl alcohol, lauryl alcohol, myristyl alcohol, myristol alcohol, cetyl alcohol, isocetyl alcohol, palmitoleyl alcohol, stearyl alcohol, iso Stearyl alcohol, oleyl alcohol, elaidyl alcohol, bacenyl alcohol, gadrel alcohol, arachidyl alcohol, isoicosanyl alcohol, eicosenoyl alcohol, behenyl alcohol, isodocosanyl alcohol, ercanyl alcohol, lignoserinyl alcohol, Isotetracosanyl alcohol, nerbonyl alcohol, serotinyl alcohol, montanyl alcohol Such Meri sheet alkenyl alcohol.
  • the aliphatic monovalent carboxylic acid having 4 to 24 carbon atoms may be saturated or unsaturated, and the number of unsaturated bonds is not particularly limited.
  • One or more aliphatic monovalent carboxylic acids may be used, and a saturated fatty acid and an unsaturated fatty acid may be used in combination.
  • Aliphatic monovalent carboxylic acids include butyric acid, crotonic acid, valeric acid, caproic acid, enanthic acid, caprylic acid, pelargonic acid, capric acid, lauric acid, myristic acid, myristoleic acid, pentadecanoic acid, palmitic acid, palmitoleic acid , Isocetyl acid, margaric acid, stearic acid, isostearic acid, oleic acid, elaidic acid, vaccenic acid, linoleic acid, linolenic acid, tuberculostearic acid, arachidic acid, isoeicosaic acid, gadoleic acid, eicosenoic acid, docosanoic acid, isodocosanoic acid , Erucic acid, tetracosanoic acid, isotetracosanoic acid, nervonic acid, serotic acid, montanic acid, me
  • the aliphatic divalent carboxylic acid having 2 to 6 carbon atoms is not particularly limited as long as it is divalent or higher, and one or two or more types may be used.
  • Aliphatic dicarboxylic acids include citric acid, isocitric acid, malic acid, aconitic acid, oxaloacetic acid, oxalosuccinic acid, succinic acid, fumaric acid, maleic acid, glutaric acid, adipic acid, pimelic acid, suberic acid, azelain Examples include acids and sebacic acid.
  • the alcohol and fatty acid constituting the ester compound having a structure in which an aliphatic monohydric alcohol and a fatty acid are ester-bonded are the above-mentioned aliphatic monovalent carboxylic acid having 4 to 24 carbon atoms and aliphatic monovalent having 4 to 24 carbon atoms. It is an ester compound with alcohol.
  • esters may be those synthesized by a known method using commercially available alcohols and fatty acids.
  • natural esters obtained from nature such as natural fruits, seeds or flowers, which satisfy the above ester structure, can be used as they are, or natural esters can be purified by known methods as necessary.
  • an ester obtained by separating and re-purifying the further purified ester using a difference in melting point by a known method may be used.
  • the polyamide monofilament of the present invention preferably has a reduced rate of variation in dry heat shrinkage stress in the longitudinal direction of the yarn in order to obtain an excellent quality fabric.
  • variation rate of the dry heat shrinkage stress is large, when the fabric is heat-treated in the weaving process, the yarn shrinks, and the fabric has a defect called slosh.
  • the variation rate of the dry heat shrinkage stress is preferably 15% or less, more preferably 12% or less.
  • FIG. 1 is a schematic view showing an example of a process for producing a polyamide monofilament according to the present invention.
  • the heat treatment temperature at the time of heat treatment with the drawing roller 6 in the production process shown in FIG. it is important that the amount of the component consisting of hydrocarbon and fatty acid alkyl ester having a weight average molecular weight of 500 or less in the oil agent adhered to the yarn by the oil supply device 4 is in an appropriate range.
  • the heat treatment temperature is set to 180 ° C. or higher.
  • it is important to control the ratio of components composed of hydrocarbons and fatty acid alkyl esters having a weight average molecular weight of 500 or less in the oil agent adhering to the yarn to the total components of the oil agent.
  • the ratio of the component consisting of hydrocarbon and fatty acid alkyl ester having a weight average molecular weight of 500 or less in the adhering oil agent is 40 wt% or less per oil agent total component. be able to.
  • the variation rate of the oil agent adhesion amount in the yarn longitudinal direction can be 20% or less.
  • the variation rate of the heat shrinkage stress can be made 15% or less.
  • the ratio of the component consisting of hydrocarbon and fatty acid alkyl ester having a weight average molecular weight of 500 or less is more than 40% by weight per the total amount of the oil agent, and the variation rate of the oil agent adhesion amount in the yarn longitudinal direction.
  • the upper limit of the heat treatment temperature is not particularly limited in terms of yarn quality, it is possible to prevent the surface of the heated drawing roller 6 from being soiled by the oil component and deteriorating the productivity of the yarn.
  • the temperature is preferably 200 ° C. or lower. More preferably, the temperature is 185 ° C to 190 ° C.
  • the length of the yarn wound around the drawing roller 6, that is, the heat treatment length is set to 3.0 m or more.
  • the heat treatment with the drawing roller 6 is sufficiently performed, and the ratio of the components consisting of hydrocarbons and fatty acid alkyl esters having a weight average molecular weight of 500 or less in the oil agent adhering to the yarn to the total amount of the oil agent Can be 40% by weight or less based on the total components of the oil agent.
  • the variation rate of the oil agent adhesion amount in the yarn longitudinal direction can be 20% or less.
  • the variation rate of the heat shrinkage stress can be made 15% or less.
  • the length is less than 3.0 m, heat treatment is insufficient, heat treatment is insufficient, and the proportion of components composed of hydrocarbons and fatty acid alkyl esters having a weight average molecular weight of 500 or less is greater than 40% by weight or the amount of oil attached Since the variation rate in the longitudinal direction of the yarn exceeds 20%, the quality of the fabric deteriorates. Furthermore, the fluctuation rate of the heat shrinkage stress exceeds 15%, and the quality of the fabric deteriorates. More preferably, it is 3.5 m or more.
  • the upper limit of the heat treatment length is not particularly limited in terms of yarn quality, and may be appropriately set so that handling as a production facility does not become difficult.
  • the amount of the component consisting of hydrocarbon and fatty acid alkyl ester having a weight average molecular weight of 500 or less in the oil is preferably 90% by weight or less based on the weight of the oil.
  • the solvent does not become excessive, and an oil agent in which each component is uniformly dissolved can be obtained.
  • the elongation of the polyamide monofilament of the present invention may be appropriately set according to the use, but is preferably 25 to 50% from the viewpoint of processability when processing into a fabric.
  • the strength is preferably 4.0 cN / dtex or more from the viewpoint of being used in filter applications requiring high precision, but depending on the use of the fabric, it can be used without problems even at 4.0 cN / dtex or less.
  • the fineness may be appropriately set according to the use, but 4 to 60 dtex is practically preferable for the filter use.
  • the cross-sectional shape of the polyamide monofilament of the present invention is not limited to a round cross-section, and a wide variety of cross-sectional shapes such as flat, Y-type, T-type, hollow-type, pad-shaped, and well-shaped can be adopted.
  • Tm Melting point
  • Fineness Samples were prepared by winding 200 times with a measuring instrument with a frame circumference of 1.125m, dried with a hot air dryer (105 ⁇ 2 ° C x 60 minutes), and weighed the weight with a balance to determine the official moisture content. The fineness was calculated from the multiplied value. The measurement was performed 4 times, and the average value was defined as the fineness.
  • F. Fluctuation rate of dry heat shrinkage stress Using an FTA measuring machine (FTA-500 manufactured by Toray Engineering Co., Ltd.), a monofilament supply speed of 10 m / min and a running yarn stress of 0.03 cN / dtex were used. It was obtained by passing the yarn through a dry heat treatment apparatus (length: 15.5 cm) heated to 10 minutes and performing measurement for 10 minutes. The variation rate of the dry heat shrinkage stress was 20% or less. The smaller this variation, the better.
  • Oil agent adhesion amount, variation rate of adhesion amount Weigh precisely 10 g of sample (polyamide monofilament), soak in normal hexane at 15 ° C, extract oil agent over 10 minutes, remove normal hexane after extraction, dry and extract The oil agent adhesion amount was calculated from the weight difference between the front and rear containers. Moreover, this measurement was performed 10 times, the average value and standard deviation of the measured value were calculated
  • Thread removal property When weaving fabric using a polyamide monofilament as a weft and a weft driving speed of 750 m / min with a projectile loom, we record the number of thread detachment occurrences from a projectile cap that occurs around 10 million m of weft. And the number of occurrences was less than 5 times, and it was regarded as acceptable. The smaller the number of times, the better.
  • Fabric quality Fabrics were produced using polyamide monofilaments as wefts, and evaluated by visual inspection to evaluate the following three stages according to the occurrence of unevenness and streaks around 50 m of fabric. S: The fabric has no streaks or unevenness and has excellent quality. A: Although slight streaks and unevenness are generated, there is no problem in using as a product. B: Streaks and unevenness occur and cannot be used as a product.
  • Example 1 As a base polymer, polyhexamethylene adipamide having a titanium oxide content of 0.02% by weight (sulfuric acid relative viscosity 2.80, melting point 262 ° C.) was adjusted to a moisture content of 0.135% by weight. The chip was put into the spinning machine shown in FIG. 1, melted at a spinning temperature of 289 ° C., and spun from a spinneret 1 having 4 holes each having a discharge hole diameter of 0.55 mm and a hole length of 9.5 mm.
  • the cooling device 3 cools and solidifies the yarn by blowing cold air
  • the oiling device 4 of the oiling roller system uses 70% by weight of the component consisting of hydrocarbon or fatty acid alkyl ester having a weight average molecular weight of 500 or less based on the weight of the oil agent.
  • the peripheral speed (take-off speed) of the take-up roller 5 was taken up at 774 m / min (set value).
  • the yarn was taken up by the draw roller 6 having a surface temperature of 190 ° C., and drawn between the rollers at a draw ratio of 4.03 times.
  • Example 2 A monofilament was obtained under the same conditions as in Example 1 except that the surface temperature of the stretching roller 6 was 185 ° C. The evaluation results of the obtained monofilament are shown in Table 1.
  • Example 3 The oil supply device 4 is provided with an oil agent in which the amount of the component consisting of hydrocarbon or fatty acid alkyl ester having a weight average molecular weight of 500 or less is adjusted to 88% by weight with respect to the oil agent weight, and the number of windings when the heat treatment is performed with the stretching roller 6 is performed.
  • a monofilament was obtained under the same conditions as in Example 1 except that 4.5 times (yarn length conversion: 3.1 m). The evaluation results of the obtained monofilament are shown in Table 1.
  • Example 4 Adjusting the roller rotation speed of the oiling device 4 of the oiling roller system so that the amount of oil applied to the yarn is 1.0% by weight, the number of windings when heat-treating with the drawing roller 6 is 4.5 times (3 in terms of yarn length) 0.1 m), a monofilament was obtained under the same conditions as in Example 1. The evaluation results of the obtained monofilament are shown in Table 1.
  • Example 5 The monofilament was formed under the same conditions as in Example 1 except that the surface temperature of the drawing roller 6 was 180 ° C., and the number of windings when the heat treatment was performed with the drawing roller 6 was 4.5 times (yarn length conversion 3.1 m). Obtained. The evaluation results of the obtained monofilament are shown in Table 1.
  • Example 2 The monofilament was formed under the same conditions as in Example 1 except that the surface temperature of the drawing roller 6 was 175 ° C., and the number of windings when the heat treatment was performed with the drawing roller 6 was 4.5 times (yarn length conversion 3.1 m). Obtained. The evaluation results of the obtained monofilament are shown in Table 2.
  • Example 6 Monofilaments were obtained under the same conditions as in Example 1, except that the oil agent adjusted by changing the weight average molecular weight of the hydrocarbon used as a smoothing component in the oil supply device 4 as shown in Table 1 was applied to the yarn. The evaluation results of the obtained monofilament are shown in Table 2.
  • Example 3 A monofilament was obtained under the same conditions as in Example 1 except that the number of windings when heat-treating with the drawing roller 6 was 3.5 (yarn length conversion: 2.4 m). The evaluation results of the obtained monofilament are shown in Table 2.
  • Example 7 A monofilament was obtained under the same conditions as in Example 1, except that the oil agent adjusted by changing the viscosity of the solvent used as the solvent in the oil supply device 4 as shown in Table 1 was applied to the yarn.
  • the evaluation results of the obtained monofilament are shown in Table 2.

Abstract

Provided is a polyamide monofilament which prevents thread shedding in a weaving process and provides excellent weaving properties and fabric quality. This polyamide filament is characterized in that the amount of oil deposition is 0.1-1.5% by weight, and components comprising hydrocarbons and fatty acid alkyl esters having a weight average molecular weight of 500 or less in the deposited oil account for 40% by weight or less of the total components of the oil.

Description

ポリアミドモノフィラメントPolyamide monofilament
 本発明は、メッシュ織物、フィルターなどの高度な精密性を要求される品位の優れた織物を、糸抜けや織機の停台がなく製織性よく得ることが可能なポリアミドモノフィラメントに関するものである。 The present invention relates to a polyamide monofilament capable of obtaining a high-quality woven fabric requiring high precision such as a mesh woven fabric and a filter without losing yarn or stopping a loom and having good weaving properties.
 ポリカプラミドやポリヘキサメチレンアジパミドに代表されるようなポリアミド繊維は、力学特性、耐薬品性、耐熱性に優れていることから、衣料用途や産業資材用途などで幅広く利用されている。産業資材用途では、特にモノフィラメントの織物(スクリーン紗織物)を用いたフィルター用途で幅広く展開しており、メディカル、飲料水濾過用、自動車用バグフィルター、音響用などと用途は多岐に渡る。 Polyamide fibers such as polycapramide and polyhexamethylene adipamide are widely used for clothing and industrial materials because of their excellent mechanical properties, chemical resistance, and heat resistance. In industrial materials, it is widely used especially for filters using monofilament fabrics (screen woven fabrics), and there are a wide variety of uses such as medical, drinking water filtration, automotive bag filters, and acoustics.
 近年、各用途において高いフィルター性能が要求されているため、スクリーン紗織物の軽量化・薄地化・高密度化が進み、織物品位に対する要求も高くなっている。織物品位を低下させる欠点にはヨコヒケやタテスジがあり、これらの原因としてモノフィラメントの糸の太さ斑、糸表面の油剤の付着斑、熱による収縮の斑、糸解舒時の張力斑などが挙げられる。これらのモノフィラメントの品位を改善するため、数多くの技術が提案されている。 In recent years, high filter performance is required for each application, so that the weight and thickness of screen woven fabrics are reduced, and the demand for fabric quality is also increasing. Defects that degrade the quality of the fabric include horizontal shrinkage and vertical stripes, which include monofilament thread thickness spots, thread surface oil adhesion spots, heat shrinkage spots, and thread tension spots. It is done. Many techniques have been proposed to improve the quality of these monofilaments.
 例えば、特許文献1には、モノフィラメントの糸条を挟み、かつ走行方向に対して位相をずらして配置した一対の給油ガイドを使用することで、糸周方向への均一給油を行い、糸長手方向の油剤の付着を安定化させ、安定した品質のモノフィラメントを提供する製造方法が提案されている。 For example, Patent Document 1 uses a pair of oil supply guides that are arranged with a monofilament thread sandwiched therebetween and shifted in phase with respect to the running direction, thereby performing uniform oil supply in the yarn circumferential direction, and the longitudinal direction of the yarn. A production method has been proposed that stabilizes the adhesion of oil agents and provides monofilaments of stable quality.
 また、特許文献2には、ポリアミドモノフィラメントからなるドラム状パッケージにおいて、糸糸動摩擦係数およびドラム巻幅を規定することで、ドラム端面への糸落ちがなく、かつ糸解舒時の瞬間張力変動が抑制され、ヨコヒケの発生が抑制されたポリアミドモノフィラメント糸条パッケージが提案されている。 Further, in Patent Document 2, in a drum-shaped package made of polyamide monofilament, the yarn dynamic friction coefficient and the drum winding width are regulated, so that there is no yarn dropping on the drum end surface, and there is no fluctuation in the instantaneous tension at the time of yarn unwinding. There has been proposed a polyamide monofilament yarn package that is suppressed and the occurrence of horizontal shrinkage is suppressed.
 さらに、特許文献3には、モノフィラメントの擦過張力と静電気発生量を規定することで、整経時の糸道ガイド通過時の張力が低く、静電気発生を抑制されたポリアミドモノフィラメントおよびその繊維パッケージが提案されている。 Further, Patent Document 3 proposes a polyamide monofilament and a fiber package thereof in which the tension when passing through the yarn guide during aging is low and the generation of static electricity is suppressed by defining the rubbing tension and static electricity generation amount of the monofilament. ing.
特開2008-57085号公報JP 2008-57085 A 特開2012-222112号公報JP 2012-222112 A 国際公開第2016/052287号パンフレットInternational Publication No. 2016/052287 Pamphlet
 しかしながら、スクリーン紗織物の軽量化・薄地化・高密度化に伴い、製織工程での緯糸の糸入れ回数が増加している。スクリーン紗織物は、主にプロジェクタイル織機で製織されており、この緯糸の糸入れ回数の増加に伴い、特許文献1、2、および3に記載のモノフィラメントでは、緯糸の糸入れの際に、糸がプロジェクタイルのキャップから抜け、織機が停台し、さらに該当の部分が欠点となる問題が生じている。 However, the number of weft yarns in the weaving process is increasing with the weight reduction, thinning, and densification of screen silk fabrics. The screen silk fabric is woven mainly by a projectile weaving machine. With the increase in the number of weft yarns inserted, the monofilaments described in Patent Documents 1, 2, and 3 are used when weft yarns are inserted. Comes out of the cap of the projectile, the loom stops, and there is a problem that the corresponding part becomes a defect.
 そこで、本発明は上記の問題点を解決しようとするものであり、製織工程での糸抜けを抑制し、優れた製織性、織物品位が得られるポリアミドモノフィラメントを提供することを課題とする。 Therefore, the present invention is intended to solve the above-described problems, and an object of the present invention is to provide a polyamide monofilament that suppresses yarn dropout in the weaving process and can provide excellent weaving properties and fabric quality.
 上記課題は、下記の構成によって解決することができる。
(1)油剤付着量が0.1~1.5重量%であり、付着している油剤中の重量平均分子量500以下の炭化水素および脂肪酸アルキルエステルからなる成分の割合が油剤の全成分あたり40重量%以下であることを特徴とするポリアミドモノフィラメント。
(2)油剤付着量の糸長手方向の変動率が20%以下であることを特徴とする(1)に記載のポリアミドモノフィラメント。
The above problem can be solved by the following configuration.
(1) The amount of the oil agent adhering is 0.1 to 1.5% by weight, and the proportion of the component consisting of hydrocarbon and fatty acid alkyl ester having a weight average molecular weight of 500 or less in the adhering oil agent is 40 per total of the oil agent A polyamide monofilament characterized by being less than or equal to weight percent.
(2) The polyamide monofilament according to (1), wherein a fluctuation rate in the longitudinal direction of the amount of oil agent attached is 20% or less.
 本発明によれば、製織工程での糸抜けが抑制され、優れた製織性、織物品位が得られるポリアミドモノフィラメントを提供することができる。 According to the present invention, it is possible to provide a polyamide monofilament in which yarn dropout in the weaving process is suppressed and excellent weaving properties and fabric quality can be obtained.
図1は、本発明に係るポリアミドモノフィラメントの製造工程の一例を示す概略図である。FIG. 1 is a schematic view showing an example of a process for producing a polyamide monofilament according to the present invention.
 以下、本発明のポリアミドモノフィラメントについて詳述する。
本発明のポリアミドモノフィラメントに用いるポリアミドは、いわゆる炭化水素基が主鎖にアミド結合を介して連結された高分子量体であり、アミノカルボン酸、環状アミドを原料として重縮合反応によって製造してもよく、もしくはジカルボン酸およびジアミンを原料として重縮合反応にて製造してもよい。以下、これらの原料を包括してモノマーという。モノマーとしては、石油由来モノマー、バイオマス由来モノマー、石油由来モノマーとバイオマス由来モノマーの混合物など限定されるものではない。かかるポリアミドとしては、特に限定されるものではないが、一例としてポリカプロラクタム、ポリウンデカノラクタム、ポリラウリルラクタムもしくはポリヘキサメチレンアジパミド、ポリヘキサメチレンセバカミド、ポリヘキサメチレンドデカンジアミドなどを挙げることができ、この中でも製糸性、機械特性に優れていることからポリヘキサメチレンアジパミドが好ましい。
Hereinafter, the polyamide monofilament of the present invention will be described in detail.
The polyamide used in the polyamide monofilament of the present invention is a high molecular weight product in which a so-called hydrocarbon group is connected to the main chain through an amide bond, and may be produced by polycondensation reaction using aminocarboxylic acid or cyclic amide as a raw material. Alternatively, it may be produced by a polycondensation reaction using dicarboxylic acid and diamine as raw materials. Hereinafter, these raw materials are collectively referred to as monomers. The monomer is not limited to petroleum-derived monomers, biomass-derived monomers, mixtures of petroleum-derived monomers and biomass-derived monomers, and the like. Examples of such polyamides include, but are not limited to, polycaprolactam, polyundecanolactam, polylauryllactam or polyhexamethylene adipamide, polyhexamethylene sebacamide, polyhexamethylene dodecandiamide, and the like. Of these, polyhexamethylene adipamide is preferred because of its excellent yarn forming properties and mechanical properties.
 本発明におけるポリアミドには本発明の目的を逸脱しない範囲で、主成分の他に第2、第3成分を共重合または混合しても良い。共重合成分としては、例えば脂肪族ジカルボン酸、脂環式ジカルボン酸、芳香族ジカルボン酸、脂肪族ジアミン、脂環式ジアミン、芳香族ジアミンから誘導される構造単位を含むことができ、共重合量は全モノマー量に対する共重合成分のモノマー量として10mol%以下が好ましく、さらに好ましくは5mol%以下である。 The polyamide in the present invention may be copolymerized or mixed with the second and third components in addition to the main component within the range not departing from the object of the present invention. Examples of copolymer components include aliphatic dicarboxylic acids, alicyclic dicarboxylic acids, aromatic dicarboxylic acids, aliphatic diamines, alicyclic diamines, and structural units derived from aromatic diamines. Is preferably 10 mol% or less, and more preferably 5 mol% or less, as the monomer amount of the copolymerization component with respect to the total monomer amount.
 本発明におけるポリアミドの粘度は、産業用繊維を製造するに常識的な範囲の粘度を選択すればよいが、98%硫酸相対粘度が2.0以上4.0以下のポリマーを使用することが好ましい。2.0以上であると、繊維としたときに十分な強度を得ることができ、4.0以下であると、紡糸時の溶融ポリマーの押出圧およびその経時の上昇速度を抑制でき、生産設備への過剰な負荷や口金の交換周期の延長が図れ、生産性が確保できるため、好ましい。また、かかる範囲とすることで得られた繊維を用いて布帛を作製した際、布帛の製品強度、例えば引裂強力が、実用に耐える強力を有する布帛を得ることができる。 The viscosity of the polyamide in the present invention may be selected within a common sense range for producing industrial fibers, but it is preferable to use a polymer having a 98% sulfuric acid relative viscosity of 2.0 to 4.0. . If it is 2.0 or more, sufficient strength can be obtained when it is made into fibers, and if it is 4.0 or less, the extrusion pressure of the molten polymer at the time of spinning and the rate of increase over time can be suppressed, and production equipment It is preferable because an excessive load on the base and an exchange period of the base can be extended and productivity can be secured. Moreover, when a fabric is produced using the fibers obtained by setting it in such a range, a fabric having the strength that the product strength of the fabric, for example, the tear strength, can withstand practical use can be obtained.
 また、本発明の目的を損なわない範囲の量、種類であれば、耐熱性などの生産性向上のための添加剤が配合されていてもよいし、艶消し、吸湿、抗菌、紫外線遮蔽、保温などの機能を持たせる添加剤が配合されてもよい。これらの添加物の含有量は、モノフィラメントの物理的特性などからポリアミドに対して1.0重量%以下が好ましい。 Moreover, as long as the amount and type do not impair the object of the present invention, additives for improving productivity such as heat resistance may be blended, matte, moisture absorption, antibacterial, ultraviolet shielding, heat insulation. Additives having functions such as may be blended. The content of these additives is preferably 1.0% by weight or less based on the polyamide due to the physical properties of the monofilament.
 本発明のポリアミドモノフィラメントにおいて用いる紡糸油剤は、主に溶媒、平滑成分、制電成分から主に構成される。 The spinning oil used in the polyamide monofilament of the present invention is mainly composed of a solvent, a smooth component and an antistatic component.
 溶媒は、紡糸油剤の平滑成分や制電成分などの有効成分を溶解、分散などさせるために用いられ、この溶媒は糸の製造工程において熱処理をされることなどによって糸表面から揮発する。溶媒が揮発することで、糸表面の油剤成分あたりの有効成分量が増加するため、揮発しやすい溶媒を用いることが好ましい。 The solvent is used to dissolve and disperse active ingredients such as the smoothing component and antistatic component of the spinning oil, and this solvent volatilizes from the surface of the yarn by heat treatment in the yarn manufacturing process. Since the amount of the active ingredient per oil agent component on the yarn surface increases as the solvent volatilizes, it is preferable to use a solvent that easily volatilizes.
 制電成分は、糸表面に発生する静電気を抑制するために用いられ、公知のアニオン界面活性剤、カチオン界面活性剤、両性界面活性剤などのイオン界面活性剤が用いられる。 The antistatic component is used to suppress static electricity generated on the yarn surface, and known ionic surfactants such as anionic surfactant, cationic surfactant, and amphoteric surfactant are used.
 平滑成分は、糸表面の潤滑性を向上させ、製織工程での糸解舒時、糸道ガイド通過時、経糸間通過時などの張力変動や糸切れを抑制し、工程通過性を安定化させるために用いられる。一般的に平滑成分として、エステル系、炭化水素系、エーテルエステル系などや分子中にポリオキシアルキレン基を有するエーテル型非イオン系界面活性剤や多価アルコール部分エステル型非イオン界面活性剤やポリオキシアルキレン多価アルコール脂肪酸エステル型非イオン界面活性剤などが用いられる。 The smooth component improves the lubricity of the yarn surface, suppresses fluctuations in tension and breakage during yarn unwinding, passing through the yarn path guide, and passing between warps in the weaving process, and stabilizes the processability. Used for. Generally, as smoothing components, ester-type, hydrocarbon-type, ether-ester-type, etc., ether-type nonionic surfactants having a polyoxyalkylene group in the molecule, polyhydric alcohol partial ester-type nonionic surfactants, An oxyalkylene polyhydric alcohol fatty acid ester type nonionic surfactant or the like is used.
 スクリーン紗織物は、主にプロジェクタイル織機で製織されており、このプロジェクタイル織機は、糸をポリウレタン製の樹脂キャップで把持したプロジェクタイルと呼ばれる金属製の部品を打ち出すことで緯糸の糸入れを行っている。本発明において、製織時の緯糸の糸入れの際に糸がプロジェクタイルのキャップから抜ける要因について検討した結果、糸の表面に付着している油剤中の特定成分がプロジェクタイルキャップへ浸透し、この特定成分の浸透によるプロジェクタイルキャップの変形が原因で糸の把持力が低下していくことを突き止めた。 Screen woven fabrics are woven mainly with a projectile loom. This projectile loom inserts a weft thread by punching out a metal part called a projectile that holds the thread with a polyurethane resin cap. ing. In the present invention, as a result of examining the factors that cause the thread to slip out of the cap of the projectile during weft insertion during weaving, a specific component in the oil adhering to the surface of the yarn penetrates into the projectile cap. It has been found that the thread gripping force decreases due to the deformation of the projectile cap due to the penetration of a specific component.
 この特定成分は、油剤中の炭化水素および脂肪酸アルキルエステルからなる成分であり、この成分の重量平均分子量が500以下であると生じやすくなる。すなわち、炭化水素および脂肪酸アルキルエステルは、分子中に極性基が少なく、同じく分子中に極性基の少ないポリウレタンとの親和性は高いため、ポリウレタンから成るプロジェクタイルキャップへこれらの成分は浸透しやすい。プロジェクタイルキャップへ浸透すると、プロジェクタイルキャップを構成するポリウレタン分子鎖間にこれらの成分が入り込み分子鎖を押し広げることでプロジェクタイルキャップの変形を生じさせる。また、ポリウレタン分子鎖の構造が変化し、プロジェクタイルキャップの脆化を生じさせるため、糸とプロジェクタイルキャップの把持面積が減少し、糸とキャップの摩擦が低下し、糸がキャップ上で滑り、把持力が低下、糸抜けが発生したと推定している。 This specific component is a component comprising a hydrocarbon and a fatty acid alkyl ester in an oil agent, and this component tends to occur when the weight average molecular weight of this component is 500 or less. That is, since hydrocarbons and fatty acid alkyl esters have few polar groups in the molecule and high affinity with polyurethanes having little polar groups in the molecule, these components are likely to penetrate into the projectile cap made of polyurethane. When penetrating into the projectile cap, these components enter between the polyurethane molecular chains constituting the projectile cap and cause the molecular chains to expand, causing deformation of the projectile cap. In addition, since the structure of the polyurethane molecular chain changes, causing the embrittlement of the projectile cap, the grip area of the thread and the projectile cap decreases, the friction between the thread and the cap decreases, the thread slides on the cap, It is presumed that the gripping force was reduced and the thread was lost.
 そこで、本発明において、安定した工程通過性であり、かつ製織工程での緯糸の糸入れの際に糸がプロジェクタイルのキャップから抜けることを抑制するためには、糸に付着している油剤中の重量平均分子量500以下の炭化水素および脂肪酸アルキルエステルからなる成分の油剤全成分あたりの割合を制御することが重要であることに至った。 Therefore, in the present invention, in order to prevent the yarn from coming out of the cap of the projectile when inserting the weft yarn in the weaving process, the oil agent attached to the yarn is stable in the process. It has become important to control the ratio of the component consisting of a hydrocarbon having a weight average molecular weight of 500 or less and a fatty acid alkyl ester per oil component.
 本発明のポリアミドモノフィラメントは、付着している油剤中の重量平均分子量500以下の炭化水素および脂肪酸アルキルエステルからなる成分の割合が油剤全成分あたり40重量%以下である。かかる範囲とすることで、上記のプロジェクタイルキャップへ浸透が生じにくくなり、キャップの変形を抑制でき、かつ製織時の糸抜けも抑制できる。また、糸抜けの抑制により織機の停台回数が減少することから生産性が向上する。さらに、糸抜けの抑制、停台回数の低減によりスジやヒケといった織物欠点を減少することができ、優れた品位の織物が得られる。より好ましくは、30重量%以下である。40重量%を超えると、製織中にプロジェクタイルキャップへこれらの成分の浸透が生じ、前述のとおりプロジェクタイルからの糸抜けが発生し、織物欠点が増加する。油剤中の重量平均分子量500以下の炭化水素および脂肪酸アルキルエステルからなる成分は、糸に平滑性を付与するための平滑成分でもあり、これらの平滑成分は、糸の表面に膜もしくはその他の形状で存在することで、糸の摩擦を低減するなどの平滑効果をもたらす。一般的に、平滑成分の重量平均分子量が高いほど膜形成能が向上して糸表面に平滑成分が残存しやすくなるが、平滑成分そのものの粘性抵抗による摩擦が生じるため、平滑成分の重量平均分子量が高いほど粘性抵抗による平滑性の低下が生じる傾向がある。一方で、重量平均分子量が低いほど粘性抵抗による平滑性の低下は生じないが、糸表面へ残存しにくくなる傾向がある。上述のことから、用いる平滑成分の重量平均分子量は200~500であることが好ましいため、糸の表面に付着している油剤中の重量平均分子量500以下の炭化水素および脂肪酸アルキルエステルからなる成分は、5重量%以上付着していることが好ましい。5重量%以上であると糸の平滑性が十分であり、織機での糸の走行性が良好となり、織物にヒケやスジを生じることがない。 In the polyamide monofilament of the present invention, the proportion of the component consisting of hydrocarbon and fatty acid alkyl ester having a weight average molecular weight of 500 or less in the adhering oil agent is 40% by weight or less per oil agent total component. By setting it as such a range, it becomes difficult to osmose | permeate said projectile cap, can suppress a deformation | transformation of a cap, and can also suppress the thread | yarn omission at the time of weaving. Further, the productivity is improved because the number of times the loom stops is reduced by suppressing the yarn dropout. Furthermore, by suppressing the yarn dropout and reducing the number of stops, fabric defects such as streaks and sink marks can be reduced, and an excellent quality fabric can be obtained. More preferably, it is 30% by weight or less. When the amount exceeds 40% by weight, penetration of these components into the projectile cap occurs during weaving, and as described above, thread loss from the projectile occurs, resulting in an increase in fabric defects. The component consisting of a hydrocarbon having a weight average molecular weight of 500 or less and a fatty acid alkyl ester in the oil agent is also a smooth component for imparting smoothness to the yarn, and these smooth components are formed on the surface of the yarn in a film or other shape. By being present, a smoothing effect such as reducing the friction of the yarn is brought about. In general, the higher the weight average molecular weight of the smooth component, the better the film forming ability and the smooth component tends to remain on the yarn surface. However, since the friction due to the viscous resistance of the smooth component itself occurs, the weight average molecular weight of the smooth component The higher the value, the lower the smoothness due to viscous resistance. On the other hand, the lower the weight average molecular weight, the lower the smoothness due to viscous resistance, but it tends to be less likely to remain on the yarn surface. From the above, since the weight average molecular weight of the smoothing component used is preferably 200 to 500, the component consisting of hydrocarbon and fatty acid alkyl ester having a weight average molecular weight of 500 or less in the oil agent adhering to the surface of the yarn is It is preferable that 5% by weight or more adhere. When the amount is 5% by weight or more, the smoothness of the yarn is sufficient, the running property of the yarn in the loom becomes good, and no sink marks or streaks are produced in the fabric.
 本発明のポリアミドモノフィラメントは、油剤付着量が糸重量あたり0.1~1.5重量%である。1.5重量%を超えると、製織工程での糸道ガイド通過時などに過剰な油剤付着による油滴が発生し、油滴による糸切れが生じるなど工程通過性が悪化する。また、0.1重量%未満の場合、糸表面の油剤成分の不足により、製織工程での糸道ガイド通過時などに糸の表面が削れ、モノマー状の析出物(一般的にスカムと呼ばれる)が発生する。このスカムがガイド上に堆積すると、糸切れが発生して工程通過性が悪化する。さらに、堆積したスカムによって走行糸条の張力が変動することで該当部分にヒケやスジが生じる、もしくはスカムが糸に取られて織物に入ることで該当部分が欠点となる。上述のことから、油剤付着量は糸重量あたり、好ましくは0.1~0.5重量%である。 The polyamide monofilament of the present invention has an oil agent adhesion amount of 0.1 to 1.5% by weight per yarn weight. If it exceeds 1.5% by weight, oil droplets will be generated due to excessive adhesion of the oil agent when passing through the yarn path guide in the weaving process, and the threadability due to the oil droplets will be lost, resulting in poor processability. When the amount is less than 0.1% by weight, the surface of the yarn is scraped when passing through the yarn path guide in the weaving process due to the lack of the oil component on the surface of the yarn, and monomeric precipitates (generally called scum) Will occur. When this scum accumulates on the guide, thread breakage occurs and process passability deteriorates. Furthermore, the tension of the running yarn is fluctuated by the accumulated scum, and sink marks and streaks are generated in the corresponding portion, or the scum is taken by the yarn and enters the woven fabric, so that the corresponding portion becomes a defect. From the above, the oil agent adhesion amount is preferably 0.1 to 0.5% by weight per yarn weight.
 本発明のポリアミドモノフィラメントは、油剤付着量の糸長手方向の変動率が20%以下であることが好ましい。かかる範囲とすることで、糸の長手方向で局所的に油剤付着量が多くなることがなく、局所的な油剤過多による重量平均分子量500以下の炭化水素およびは脂肪酸アルキルエステルからなる成分の過剰なプロジェクタイルキャップへの付着が抑制できることから、キャップの変形を抑制でき、製織時の糸抜けが抑制できる。また、糸抜けの抑制により織機の停台回数が減少することから生産性が向上する。さらに、糸抜けの抑制、停台回数の低減によりスジやヒケといった織物欠点を減少することができ、優れた品位の織物が得られる。また、糸長手方向で油剤の付着差がないため、糸解舒時の張力変動が抑制できる。加えて、油剤の付着不足による糸表面の削れによるスカムの発生もなく、欠点のない布帛を得ることができる。より好ましくは、変動率15%以下である。 In the polyamide monofilament of the present invention, it is preferable that the variation rate of the oil agent adhesion amount in the yarn longitudinal direction is 20% or less. By setting it as such a range, the amount of oil agent adhesion locally does not increase in the longitudinal direction of the yarn, and excessive components of hydrocarbons having a weight average molecular weight of 500 or less and a fatty acid alkyl ester due to excessive oil agent locally. Since the adhesion to the projectile cap can be suppressed, the deformation of the cap can be suppressed and the thread dropout during weaving can be suppressed. Further, the productivity is improved because the number of times the loom stops is reduced by suppressing the yarn dropout. Furthermore, by suppressing the yarn dropout and reducing the number of stops, fabric defects such as streaks and sink marks can be reduced, and an excellent quality fabric can be obtained. In addition, since there is no difference in the adhesion of the oil agent in the longitudinal direction of the yarn, fluctuations in tension during yarn unwinding can be suppressed. In addition, there is no occurrence of scum due to shaving of the yarn surface due to insufficient adhesion of the oil agent, and a fabric having no defects can be obtained. More preferably, the fluctuation rate is 15% or less.
 本発明において、付着している重量平均分子量500以下の炭化水素および脂肪酸アルキルエステルからなる成分は、その分子構造は分子量以外限定されるものではない。 In the present invention, the adhering component composed of hydrocarbon and fatty acid alkyl ester having a weight average molecular weight of 500 or less is not limited in molecular structure other than the molecular weight.
 本発明において、炭化水素は上述の平滑成分として用いることに加えて、油剤を調整する際の溶媒として用いられている。上述のとおり、糸表面の油剤成分あたりの有効成分量を増加させるために、油剤の溶媒は揮発しやすいことが重要であり、また揮発しやすいことによってプロジェクタイルキャップへ浸透がする炭化水素が糸表面に残留しにくくなる。この炭化水素の揮発のしやすさは粘度と相関があることが知られており、すなわち、粘度が低い程、揮発しやすくなる。炭化水素の粘度の測定方法として既知の方法にはセイボルトユニバーサル粘度計を用いる方法がある。セイボルトユニバーサル粘度計によって測定される粘度は、単位セイボルトユニバーサル秒(SUS)で表され、SUSが小さいほど粘度は小さい。本発明のポリアミドモノフィラメントにおいて用いる紡糸油剤の溶媒に用いる炭化水素の粘度の上限は、限定されるものではないが、上述の揮発のしやすさの点から、好ましくは100SUS以下である。また、粘度の下限も限定されるものではないが、紡糸油剤の管理の点から30SUS以上であることが好ましい。 In the present invention, the hydrocarbon is used as a solvent for adjusting the oil agent in addition to the above-described smoothing component. As described above, in order to increase the amount of the active ingredient per oil component on the surface of the yarn, it is important that the solvent of the oil agent is easily volatilized. It becomes difficult to remain on the surface. It is known that the easiness of volatilization of this hydrocarbon has a correlation with the viscosity, that is, the lower the viscosity, the easier it is to volatilize. A known method for measuring the viscosity of hydrocarbons is to use a Saybolt universal viscometer. The viscosity measured by the Saybolt universal viscometer is expressed in unit Saybolt universal seconds (SUS), and the smaller the SUS, the smaller the viscosity. The upper limit of the viscosity of the hydrocarbon used in the solvent of the spinning oil used in the polyamide monofilament of the present invention is not limited, but is preferably 100 SUS or less from the viewpoint of the above volatility. The lower limit of the viscosity is not limited, but is preferably 30 SUS or more from the viewpoint of management of the spinning oil.
 本発明において用いる脂肪酸アルキルエステルとして、多価アルコール脂肪酸エステル、多価カルボン酸脂肪族アルコールエステル、脂肪族1価アルコールと脂肪酸とがエステル結合した構造を有するエステル化合物が主に挙げられる。 Examples of fatty acid alkyl esters used in the present invention mainly include polyhydric alcohol fatty acid esters, polycarboxylic acid aliphatic alcohol esters, and ester compounds having a structure in which an aliphatic monohydric alcohol and a fatty acid are ester-bonded.
 多価アルコール脂肪酸エステルは、炭素数2~6の脂肪族2価アルコールまたは炭素数3または4の脂肪族3価アルコールと、炭素数4~24の脂肪族1価カルボン酸とのエステルである。また分子内にポリオキシアルキレン基を有しない化合物である。多価カルボン酸脂肪族アルコールエステルは、炭素数2~6の脂肪族2価カルボン酸と炭素数4~24の脂肪族1価アルコールとのエステルであり、また分子内にポリオキシアルキレン基を有しない化合物である。脂肪族1価アルコールと脂肪酸とがエステル結合した構造を有するエステル化合物は、炭素数4~24の脂肪族1価カルボン酸と炭素数4~24の脂肪族1価アルコールとのエステルである。 The polyhydric alcohol fatty acid ester is an ester of an aliphatic dihydric alcohol having 2 to 6 carbon atoms or an aliphatic trivalent alcohol having 3 or 4 carbon atoms and an aliphatic monovalent carboxylic acid having 4 to 24 carbon atoms. Moreover, it is a compound which does not have a polyoxyalkylene group in a molecule | numerator. The polycarboxylic acid aliphatic alcohol ester is an ester of an aliphatic divalent carboxylic acid having 2 to 6 carbon atoms and an aliphatic monohydric alcohol having 4 to 24 carbon atoms, and has a polyoxyalkylene group in the molecule. It is a compound that does not. The ester compound having a structure in which an aliphatic monohydric alcohol and a fatty acid are ester-bonded is an ester of an aliphatic monovalent carboxylic acid having 4 to 24 carbon atoms and an aliphatic monohydric alcohol having 4 to 24 carbon atoms.
 脂肪酸アルキルエステルを構成するアルコールと脂肪酸については、以下のとおりである。 炭素数2~6の脂肪族2価アルコールとしては、例えば、エチレングリコール、ジエチレングリコール、トリエチレングリコール、テトラエチレングリコール、プロピレングリコール、ジプロピレングリコール、トリプロピレングリコール、1,2-ブタンジオール、1,3-ブタンジオール、1,4-ブタンジオール、2-メチル-1,3-プロパンジオール、1,5-ペンタンジオール、1,6-ヘキサンジオールなどが挙げられる。炭素数3または4の脂肪族3価アルコールとしては、例えば、グリセリン、トリメチロールプロパンなどが挙げられる。 The alcohol and fatty acid constituting the fatty acid alkyl ester are as follows. Examples of the aliphatic dihydric alcohol having 2 to 6 carbon atoms include ethylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, propylene glycol, dipropylene glycol, tripropylene glycol, 1,2-butanediol, 1,3 -Butanediol, 1,4-butanediol, 2-methyl-1,3-propanediol, 1,5-pentanediol, 1,6-hexanediol and the like. Examples of the aliphatic trihydric alcohol having 3 or 4 carbon atoms include glycerin and trimethylolpropane.
 炭素数4~24の脂肪族1価アルコールは、飽和であっても不飽和であってもよく、不飽和結合の数については特に限定はない。また、脂肪族1価アルコールは、1種または2種以上を使用してもよく、飽和脂肪族アルコールと不飽和脂肪族アルコールを併用してもよい。 脂肪族1価アルコールとしては、ブチルアルコール、ペンタノール、ヘキサノール、ヘプタノール、オクチルアルコール、イソオクチルアルコール、ラウリルアルコール、ミリスチルアルコール、ミリストレイルアルコール、セチルアルコール、イソセチルアルコール、パルミトレイルアルコール、ステアリルアルコール、イソステアリルアルコール、オレイルアルコール、エライジルアルコール、バクセニルアルコール、ガドレイルアルコール、アラキジルアルコール、イソイコサニルアルコール、エイコセノイルアルコール、ベヘニルアルコール、イソドコサニルアルコール、エルカニルアルコール、リグノセリニルアルコール、イソテトラコサニルアルコール、ネルボニルアルコール、セロチニルアルコール、モンタニルアルコール、メリシニルアルコールなどが挙げられる。 The aliphatic monohydric alcohol having 4 to 24 carbon atoms may be saturated or unsaturated, and the number of unsaturated bonds is not particularly limited. Moreover, 1 type (s) or 2 or more types may be used for an aliphatic monohydric alcohol, and a saturated aliphatic alcohol and an unsaturated aliphatic alcohol may be used together. Aliphatic monohydric alcohols include butyl alcohol, pentanol, hexanol, heptanol, octyl alcohol, isooctyl alcohol, lauryl alcohol, myristyl alcohol, myristol alcohol, cetyl alcohol, isocetyl alcohol, palmitoleyl alcohol, stearyl alcohol, iso Stearyl alcohol, oleyl alcohol, elaidyl alcohol, bacenyl alcohol, gadrel alcohol, arachidyl alcohol, isoicosanyl alcohol, eicosenoyl alcohol, behenyl alcohol, isodocosanyl alcohol, ercanyl alcohol, lignoserinyl alcohol, Isotetracosanyl alcohol, nerbonyl alcohol, serotinyl alcohol, montanyl alcohol Such Meri sheet alkenyl alcohol.
 炭素数4~24の脂肪族1価カルボン酸としては、飽和であっても不飽和であってもよく、不飽和結合の数については特に限定はない。脂肪族1価カルボン酸は、1種または2種以上を使用してもよく、飽和脂肪酸と不飽和脂肪酸を併用してもよい。 脂肪族1価カルボン酸としては、酪酸、クロトン酸、吉草酸、カプロン酸、エナント酸、カプリル酸、ペラルゴン酸、カプリン酸、ラウリン酸、ミリスチン酸、ミリストレイン酸、ペンタデカン酸、パルミチン酸、パルミトレイン酸、イソセチル酸、マルガリン酸、ステアリン酸、イソステアリン酸、オレイン酸、エライジン酸、バクセン酸、リノール酸、リノレン酸、ツベルクロステアリン酸、アラキジン酸、イソエイコサ酸、ガドレイン酸、エイコセン酸、ドコサン酸、イソドコサン酸、エルカ酸、テトラコサン酸、イソテトラコサン酸、ネルボン酸、セロチン酸、モンタン酸、メリシン酸などが挙げられる。 The aliphatic monovalent carboxylic acid having 4 to 24 carbon atoms may be saturated or unsaturated, and the number of unsaturated bonds is not particularly limited. One or more aliphatic monovalent carboxylic acids may be used, and a saturated fatty acid and an unsaturated fatty acid may be used in combination. Aliphatic monovalent carboxylic acids include butyric acid, crotonic acid, valeric acid, caproic acid, enanthic acid, caprylic acid, pelargonic acid, capric acid, lauric acid, myristic acid, myristoleic acid, pentadecanoic acid, palmitic acid, palmitoleic acid , Isocetyl acid, margaric acid, stearic acid, isostearic acid, oleic acid, elaidic acid, vaccenic acid, linoleic acid, linolenic acid, tuberculostearic acid, arachidic acid, isoeicosaic acid, gadoleic acid, eicosenoic acid, docosanoic acid, isodocosanoic acid , Erucic acid, tetracosanoic acid, isotetracosanoic acid, nervonic acid, serotic acid, montanic acid, melicic acid and the like.
 炭素数2~6の脂肪族2価カルボン酸は、2価以上であれば特に限定はなく、1種または2種以上を使用してもよい。 脂肪族2価カルボン酸としては、クエン酸、イソクエン酸、リンゴ酸、アコニット酸、オキサロ酢酸、オキサロコハク酸、コハク酸、フマル酸、マレイン酸、グルタル酸、アジピン酸、ピメリン酸、スベリン酸、アゼライン酸、セバシン酸などが挙げられる。 The aliphatic divalent carboxylic acid having 2 to 6 carbon atoms is not particularly limited as long as it is divalent or higher, and one or two or more types may be used. Aliphatic dicarboxylic acids include citric acid, isocitric acid, malic acid, aconitic acid, oxaloacetic acid, oxalosuccinic acid, succinic acid, fumaric acid, maleic acid, glutaric acid, adipic acid, pimelic acid, suberic acid, azelain Examples include acids and sebacic acid.
 脂肪族1価アルコールと脂肪酸とがエステル結合した構造を有するエステル化合物を構成するアルコールと脂肪酸は、上記の炭素数4~24の脂肪族1価カルボン酸と炭素数4~24の脂肪族1価アルコールとのエステル化合物である。 The alcohol and fatty acid constituting the ester compound having a structure in which an aliphatic monohydric alcohol and a fatty acid are ester-bonded are the above-mentioned aliphatic monovalent carboxylic acid having 4 to 24 carbon atoms and aliphatic monovalent having 4 to 24 carbon atoms. It is an ester compound with alcohol.
 これらのエステルは一般的に市販されているアルコールと脂肪酸を用いて、公知の方法で合成し得られたものを使用してもよい。また、天然の果実、種子または花など天然より得られる天然エステルであって、上記のエステルの構成を満足する天然エステルをそのまま使用したり、必要に応じて、天然エステルを公知の方法で精製したり、さらに精製したエステルを公知の方法で融点差を利用して分離、再精製を行ったエステルを用いてもよい。 These esters may be those synthesized by a known method using commercially available alcohols and fatty acids. In addition, natural esters obtained from nature such as natural fruits, seeds or flowers, which satisfy the above ester structure, can be used as they are, or natural esters can be purified by known methods as necessary. Alternatively, an ester obtained by separating and re-purifying the further purified ester using a difference in melting point by a known method may be used.
 本発明のポリアミドモノフィラメントは、優れた品位の織物を得るために、糸長手方向の乾熱収縮応力の変動率を低減させることが好ましい。乾熱収縮応力の変動率が大きい場合、製織工程で布帛の熱処理を行った際に、糸の収縮に斑が生じ、布帛にヨコヒケと呼ばれる欠点が生じる。乾熱収縮応力の変動率は、好ましくは15%以下、より好ましくは12%以下とするとよい。 The polyamide monofilament of the present invention preferably has a reduced rate of variation in dry heat shrinkage stress in the longitudinal direction of the yarn in order to obtain an excellent quality fabric. When the variation rate of the dry heat shrinkage stress is large, when the fabric is heat-treated in the weaving process, the yarn shrinks, and the fabric has a defect called slosh. The variation rate of the dry heat shrinkage stress is preferably 15% or less, more preferably 12% or less.
 次に上述した油剤付着量、付着している油剤中の重量平均分子量500以下の炭化水素および脂肪酸アルキルエステルからなる成分の割合、油剤付着量の糸長手方向の変動率を満足するための好ましい形態について説明する。 Next, a preferred form for satisfying the above-described oil agent adhesion amount, the ratio of components composed of hydrocarbon and fatty acid alkyl ester having a weight average molecular weight of 500 or less in the adhering oil agent, and the variation rate of the oil agent adhesion amount in the yarn longitudinal direction Will be described.
 本発明のポリアミドモノフィラメントの製造方法の一例を、図1にしたがって具体的に説明する。図1は本発明に係るポリアミドモノフィラメントの製造工程の一例を示す概略図である。 An example of the method for producing the polyamide monofilament of the present invention will be specifically described with reference to FIG. FIG. 1 is a schematic view showing an example of a process for producing a polyamide monofilament according to the present invention.
 溶融されたポリアミドチップをギヤポンプにて計量・輸送し、紡糸口金1から吐出させ、紡糸口金の直下に設けられた紡糸口金面に向けて蒸気が噴射されている蒸気噴出装置2と、蒸気噴射装置2の下流側に設けられ、かつ冷却装置3から冷却風が吹き流れている領域を通過させて糸条を室温まで冷却固化し、次いで給油装置4で給油し、引き取りローラー5に複数回巻き付け、さらに延伸ローラー6に複数回巻き付けて糸を通過させる。その際、糸を引き取りローラー5と延伸ローラー6の周速度の比に従って延伸する。最後に、糸を延伸ローラー6の加熱により熱処理し、ワインダー(巻取装置)7で巻き取る。 A steam ejection device 2 in which melted polyamide chips are measured and transported by a gear pump, discharged from the spinneret 1, and steam is jetted toward the spinneret surface provided immediately below the spinneret, and a steam injection device 2 and passing through a region where cooling air is blown from the cooling device 3 to cool and solidify the yarn to room temperature, and then oiled by the oil supply device 4 and wound around the take-up roller 5 a plurality of times. Further, the yarn is passed through the drawing roller 6 by being wound a plurality of times. At that time, the yarn is drawn according to the ratio of the peripheral speeds of the take-up roller 5 and the drawing roller 6. Finally, the yarn is heat-treated by heating the drawing roller 6 and wound by a winder (winding device) 7.
 本発明のポリアミドモノフィラメントを得るためには、図1に示した製造工程における延伸ローラー6で熱処理をする際の熱処理温度と延伸ローラー6に糸を巻き付ける長さ、すなわち熱処理長を適正な範囲とすること、給油装置4で糸に付着させる油剤中の重量平均分子量500以下の炭化水素および脂肪酸アルキルエステルからなる成分の量を適正な範囲とすることが重要である。 In order to obtain the polyamide monofilament of the present invention, the heat treatment temperature at the time of heat treatment with the drawing roller 6 in the production process shown in FIG. In addition, it is important that the amount of the component consisting of hydrocarbon and fatty acid alkyl ester having a weight average molecular weight of 500 or less in the oil agent adhered to the yarn by the oil supply device 4 is in an appropriate range.
 本発明のポリアミドモノフィラメントは、延伸ローラー6で熱処理をする際、熱処理温度を180℃以上とする。上述のとおり、本発明において、糸に付着している油剤中の重量平均分子量500以下の炭化水素および脂肪酸アルキルエステルからなる成分の油剤全成分あたりの割合を制御することが重要であり、該成分は沸点が低く、また熱によって分解しやすいため、延伸ローラー6での熱処理によって、揮発もしくは分解されて糸表面での残留量が減少する。延伸ローラー6での熱処理温度をかかる範囲とすることで、付着している油剤中の重量平均分子量500以下の炭化水素および脂肪酸アルキルエステルからなる成分の割合を油剤全成分あたり40重量%以下にすることができる。また、油剤付着量の糸長手方向の変動率を20%以下にすることができる。加えて、熱収縮応力の変動率を15%以下にすることができる。さらには、糸表面および糸中に残留しているモノマーやオリゴマーを揮発させてその残留量を減少させることができるので、製織工程でこれらのモノマーやオリゴマーがスカムとして析出することを抑制できる。180℃未満の場合、熱処理が不足し、重量平均分子量500以下の炭化水素および脂肪酸アルキルエステルからなる成分の割合が油剤全成分あたり40重量%より多く、また油剤付着量の糸長手方向の変動率が20%を超え、もしくは熱収縮応力の変動率が15%を超えて、織物品位が低化する。さらには、残留モノマーやオリゴマー由来のスカムが発生し、製織工程での生産性の悪化、織物品位の悪化が生じる。一方で、熱処理温度の上限は糸の品位の点では特に制限されるものではないが、加熱された延伸ローラー6の表面が油剤成分によって汚れて糸の生産性が悪化することを防止する点から、200℃以下とすることが好ましい。より好ましくは、185℃~190℃である。 When the polyamide monofilament of the present invention is heat-treated with the drawing roller 6, the heat treatment temperature is set to 180 ° C. or higher. As described above, in the present invention, it is important to control the ratio of components composed of hydrocarbons and fatty acid alkyl esters having a weight average molecular weight of 500 or less in the oil agent adhering to the yarn to the total components of the oil agent. Has a low boiling point and is easily decomposed by heat. Therefore, it is volatilized or decomposed by heat treatment with the drawing roller 6 to reduce the residual amount on the yarn surface. By setting the heat treatment temperature in the stretching roller 6 to such a range, the ratio of the component consisting of hydrocarbon and fatty acid alkyl ester having a weight average molecular weight of 500 or less in the adhering oil agent is 40 wt% or less per oil agent total component. be able to. Further, the variation rate of the oil agent adhesion amount in the yarn longitudinal direction can be 20% or less. In addition, the variation rate of the heat shrinkage stress can be made 15% or less. Furthermore, since monomers and oligomers remaining on the yarn surface and in the yarn can be volatilized to reduce the residual amount, precipitation of these monomers and oligomers as scum in the weaving process can be suppressed. When the temperature is less than 180 ° C., heat treatment is insufficient, the ratio of the component consisting of hydrocarbon and fatty acid alkyl ester having a weight average molecular weight of 500 or less is more than 40% by weight per the total amount of the oil agent, and the variation rate of the oil agent adhesion amount in the yarn longitudinal direction. Exceeds 20%, or the fluctuation rate of the heat shrinkage stress exceeds 15%, and the quality of the fabric is lowered. Furthermore, residual monomer and oligomer-derived scum are generated, resulting in deterioration in productivity and weaving quality in the weaving process. On the other hand, although the upper limit of the heat treatment temperature is not particularly limited in terms of yarn quality, it is possible to prevent the surface of the heated drawing roller 6 from being soiled by the oil component and deteriorating the productivity of the yarn. The temperature is preferably 200 ° C. or lower. More preferably, the temperature is 185 ° C to 190 ° C.
 本発明のポリアミドモノフィラメントは、延伸ローラー6で熱処理をする際、延伸ローラー6に糸を巻き付ける長さ、すなわち熱処理長を3.0m以上とする。かかる範囲とすることで、延伸ローラー6での熱処理が十分に行われ、糸に付着している油剤中の重量平均分子量500以下の炭化水素および脂肪酸アルキルエステルからなる成分の油剤全成分あたりの割合を油剤全成分あたり40重量%以下にすることができる。また、油剤付着量の糸長手方向の変動率を20%以下にすることができる。加えて、熱収縮応力の変動率を15%以下にすることができる。3.0m未満の場合、熱処理が不足し、熱処理が不足し、重量平均分子量500以下の炭化水素および脂肪酸アルキルエステルからなる成分の割合が油剤全成分あたり40重量%より多くなる、もしくは油剤付着量の糸長手方向の変動率が20%を超えるため、織物品位が悪化する。さらには、熱収縮応力の変動率が15%を超えて、織物品位が悪化する。より好ましくは、3.5m以上である。熱処理長の上限は、糸の品位の点では特に制限を設けるものではなく、生産設備として取り扱いが困難にならないよう適宜設定すればよい。 When the polyamide monofilament of the present invention is heat-treated with the drawing roller 6, the length of the yarn wound around the drawing roller 6, that is, the heat treatment length is set to 3.0 m or more. By setting it as such a range, the heat treatment with the drawing roller 6 is sufficiently performed, and the ratio of the components consisting of hydrocarbons and fatty acid alkyl esters having a weight average molecular weight of 500 or less in the oil agent adhering to the yarn to the total amount of the oil agent Can be 40% by weight or less based on the total components of the oil agent. Further, the variation rate of the oil agent adhesion amount in the yarn longitudinal direction can be 20% or less. In addition, the variation rate of the heat shrinkage stress can be made 15% or less. If the length is less than 3.0 m, heat treatment is insufficient, heat treatment is insufficient, and the proportion of components composed of hydrocarbons and fatty acid alkyl esters having a weight average molecular weight of 500 or less is greater than 40% by weight or the amount of oil attached Since the variation rate in the longitudinal direction of the yarn exceeds 20%, the quality of the fabric deteriorates. Furthermore, the fluctuation rate of the heat shrinkage stress exceeds 15%, and the quality of the fabric deteriorates. More preferably, it is 3.5 m or more. The upper limit of the heat treatment length is not particularly limited in terms of yarn quality, and may be appropriately set so that handling as a production facility does not become difficult.
 本発明のポリアミドモノフィラメントに用いる紡糸油剤は、油剤中の重量平均分子量500以下の炭化水素および脂肪酸アルキルエステルからなる成分の量を油剤重量に対して90重量%以下とすることが好ましい。かかる範囲とすることで、上述の良好な平滑性が得られ、プロジェクタイルキャップへの該成分の浸透が抑制でき、製品品位に優れた布帛を得ることができる。また、油剤を調製する際に溶媒が過少とならず、各成分が均一に溶解した油剤を得られ、糸に付着させる際に油分付着量にバラツキを低減することができる。 In the spinning oil used in the polyamide monofilament of the present invention, the amount of the component consisting of hydrocarbon and fatty acid alkyl ester having a weight average molecular weight of 500 or less in the oil is preferably 90% by weight or less based on the weight of the oil. By setting it as this range, the above-mentioned favorable smoothness can be obtained, the penetration of the component into the projectile cap can be suppressed, and a fabric excellent in product quality can be obtained. In addition, when preparing the oil agent, the solvent does not become excessive, and an oil agent in which each component is uniformly dissolved can be obtained. When the oil agent is attached to the yarn, variation in the oil adhesion amount can be reduced.
 本発明のポリアミドモノフィラメントの伸度は、用途に応じて適宜設定すれば良いが、布帛に加工する際の加工性の点から、好ましくは25~50%である。 The elongation of the polyamide monofilament of the present invention may be appropriately set according to the use, but is preferably 25 to 50% from the viewpoint of processability when processing into a fabric.
 また、高度な精密性を要求されるフィルター用途で使用される点から強度は4.0cN/dtex以上であることが好ましいが、布帛の用途によっては4.0cN/dtex以下でも問題なく使用できる。 In addition, the strength is preferably 4.0 cN / dtex or more from the viewpoint of being used in filter applications requiring high precision, but depending on the use of the fabric, it can be used without problems even at 4.0 cN / dtex or less.
 さらに、繊度は用途に応じて適宜設定すれば良いが、フィルター用途であれば4~60dtexが実用上好ましい。 Further, the fineness may be appropriately set according to the use, but 4 to 60 dtex is practically preferable for the filter use.
 本発明のポリアミドモノフィラメントの断面形状は、丸断面だけでなく、扁平、Y型、T型、中空型、田字型、井字型など多種多様な断面形状を採用することができる。 The cross-sectional shape of the polyamide monofilament of the present invention is not limited to a round cross-section, and a wide variety of cross-sectional shapes such as flat, Y-type, T-type, hollow-type, pad-shaped, and well-shaped can be adopted.
 本発明を実施例で詳細に説明する。なお、実施例中の測定方法は以下の方法を用いた。 The present invention will be described in detail with reference to examples. In addition, the measuring method in an Example used the following method.
 A.硫酸相対粘度
 試料0.25gを濃度1g/lになるように濃度98wt%の硫酸100mlに溶解し、オストワルド型粘度計を用いて25℃での流下時間(T1)を測定した。引き続き、濃度98wt%の硫酸のみの流下時間(T2)を測定した。T2に対するT1の比、すなわちT1/T2を硫酸相対粘度とした。
A. Sulfuric acid relative viscosity 0.25 g of the sample was dissolved in 100 ml of sulfuric acid having a concentration of 98 wt% so as to have a concentration of 1 g / l, and the flow time (T1) at 25 ° C. was measured using an Ostwald viscometer. Subsequently, the flow time (T2) of only sulfuric acid having a concentration of 98 wt% was measured. The ratio of T1 to T2, that is, T1 / T2, was defined as sulfuric acid relative viscosity.
 B.融点(Tm)
 パーキンエルマー社製の示差走査型熱量計DSC-7型を用い、試料ポリマー20mgを、1stRUNとして、昇温速度20℃/分で20℃から280℃まで昇温し、280℃の温度で5分間保持した後、降温速度20℃/分で280℃から20℃まで降温し、20℃の温度で1分間保持した後、さらに2ndRUNとして、昇温速度20℃/分で20℃から280℃まで昇温したときに観測される吸熱ピークの温度を融点とした。
B. Melting point (Tm)
Using a differential scanning calorimeter DSC-7 manufactured by PerkinElmer, the sample polymer 20 mg was heated to 20 ° C. to 280 ° C. at a rate of temperature increase of 20 ° C./min for 5 minutes at a temperature of 280 ° C. for 5 minutes. After holding, the temperature was lowered from 280 ° C. to 20 ° C. at a temperature drop rate of 20 ° C./minute, held at 20 ° C. for 1 minute, and further increased from 20 ° C. to 280 ° C. at a temperature rise rate of 20 ° C./minute as 2ndRUN. The temperature of the endothermic peak observed when heated was taken as the melting point.
 C.繊度
 試料を枠周1.125mの検尺機にて200回巻カセを作成し、熱風乾燥機にて乾燥後(105±2℃×60分)、天秤にてカセ重量を量り公定水分率を乗じた値から繊度を算出した。測定は4回行い、平均値を繊度とした。
C. Fineness Samples were prepared by winding 200 times with a measuring instrument with a frame circumference of 1.125m, dried with a hot air dryer (105 ± 2 ° C x 60 minutes), and weighed the weight with a balance to determine the official moisture content. The fineness was calculated from the multiplied value. The measurement was performed 4 times, and the average value was defined as the fineness.
 D.引っ張り強度および伸度
 オリエンテック(株)製“TENSILON”(登録商標)UCT-100を測定機器として用い、JIS L1013(化学繊維フィラメント糸試験方法、2010年)に示される定速伸長条件で測定した。伸度は、引張強さ-伸び曲線における最大強力を示した点の伸びから求めた。また、引っ張り強度は、最大強力を繊度で除した値を強度とした。測定は10回行い、平均値を引っ張り強度および伸度とした。
D. Tensile strength and elongation Using “TENSILON” (registered trademark) UCT-100 manufactured by Orientec Co., Ltd. as a measuring instrument, the tensile strength and elongation were measured under constant speed elongation conditions shown in JIS L1013 (chemical fiber filament yarn test method, 2010). . The elongation was determined from the elongation at the point showing the maximum strength in the tensile strength-elongation curve. The tensile strength was determined by dividing the maximum strength by the fineness. The measurement was performed 10 times, and the average values were taken as tensile strength and elongation.
 E.沸騰水収縮率
 ポリアミドモノフィラメントを周長1.125mのかせ取り機で20回巻き取ってかせを作り、0.09cN/dtex荷重下で初長Lを求めた。次に無荷重下沸水中で30分間処理した後、風乾する。次いで0.09cN/dtex荷重下で処理後の長さLを求め次式で算出する。
沸騰水収縮率(%)=[(L-L)/L]×100   。
E. Boiling water shrinkage rate Polyamide monofilament was wound up 20 times with a kettle with a circumference of 1.125 m to make a skein, and the initial length L 0 was determined under a load of 0.09 cN / dtex. Next, it is treated in boiling water under no load for 30 minutes and then air-dried. Next, the length L 1 after the treatment under a 0.09 cN / dtex load is obtained and calculated by the following formula.
Boiling water shrinkage rate (%) = [(L 0 −L 1 ) / L 0 ] × 100.
 F.乾熱収縮応力の変動率
 FTA測定機(東レエンジニアリング社製FTA-500)を用い、モノフィラメントの供給速度10m/分、走行糸応力0.03cN/dtexの条件で、測定機に備え付けてある100℃に加熱した乾熱処理装置(長さ15.5cm)に糸条を通過させ10分間測定を行うことにより求めた。乾熱収縮応力の変動率が20%以下を合格とした。この変動は小さければ小さい程よい。
F. Fluctuation rate of dry heat shrinkage stress Using an FTA measuring machine (FTA-500 manufactured by Toray Engineering Co., Ltd.), a monofilament supply speed of 10 m / min and a running yarn stress of 0.03 cN / dtex were used. It was obtained by passing the yarn through a dry heat treatment apparatus (length: 15.5 cm) heated to 10 minutes and performing measurement for 10 minutes. The variation rate of the dry heat shrinkage stress was 20% or less. The smaller this variation, the better.
 G.油剤付着量、付着量の変動率
 試料(ポリアミドモノフィラメント)10gを精秤し、15℃のノルマルヘキサン中に浸し、10分かけて油剤を抽出し、抽出後ノルマルヘキサンを除去し乾燥して、抽出前後の容器の重量差から油剤付着量を算出した。また、本測定を10回行い、測定値の平均値と標準偏差を求めて変動率を計算した。
G. Oil agent adhesion amount, variation rate of adhesion amount Weigh precisely 10 g of sample (polyamide monofilament), soak in normal hexane at 15 ° C, extract oil agent over 10 minutes, remove normal hexane after extraction, dry and extract The oil agent adhesion amount was calculated from the weight difference between the front and rear containers. Moreover, this measurement was performed 10 times, the average value and standard deviation of the measured value were calculated | required, and the fluctuation rate was calculated.
 H.糸表面の油剤成分の特定
 ポリアミドモノフィラメントをソックスレー抽出装置に入れ、次にシクロヘキサンを加えて、約4時間加熱還流した後、シクロヘキサンを回収して糸表面の油剤成分を抽出した。得られた抽出液を公知のH-NMR法にて測定を行い、スペクトルデータより油剤成分の構造を特定した。また、抽出液中の油剤成分の重量平均分子量は東ソー(株)製高速ゲルパーミエーションクロマトグラフィー装置HLC-8220GPCを用い、試料濃度3mg/ccで、昭和電工(株)製分離カラムKF-402HQ、KF-403HQに注入し、示差屈折率検出器で測定されたピークより算出した。
H. Identification of oil component on yarn surface Polyamide monofilament was placed in a Soxhlet extraction apparatus, then cyclohexane was added and heated to reflux for about 4 hours, and then cyclohexane was recovered to extract the oil component on the yarn surface. The obtained extract was measured by a known 1 H-NMR method, and the structure of the oil component was identified from the spectrum data. In addition, the weight average molecular weight of the oil component in the extract was measured using a high-speed gel permeation chromatography device HLC-8220GPC manufactured by Tosoh Corporation, and a separation column KF-402HQ manufactured by Showa Denko KK at a sample concentration of 3 mg / cc. It was injected into KF-403HQ and calculated from the peak measured with a differential refractive index detector.
 I.糸抜け性
 ポリアミドモノフィラメントを緯糸に用いて、プロジェクタイル織機にて緯糸打ち込み速度を750m/分として織物を作製する際に、緯糸1000万mあたりで発生するプロジェクタイルキャップからの糸抜け発生回数を記録し、発生回数が5回未満で合格とした。この回数は少なければ少ない程よい。
I. Thread removal property When weaving fabric using a polyamide monofilament as a weft and a weft driving speed of 750 m / min with a projectile loom, we record the number of thread detachment occurrences from a projectile cap that occurs around 10 million m of weft. And the number of occurrences was less than 5 times, and it was regarded as acceptable. The smaller the number of times, the better.
 J.停台回数
 ポリアミドモノフィラメントを緯糸に用いて、プロジェクタイル織機にて緯糸打ち込み速度を750m/分として織物を作製する際に、緯糸1000万mあたりで発生する織機の停台回数を記録し、停台回数が5回未満で合格とした。この回数は少なければ少ない程よい。
J. et al. Number of stops The number of stops of the loom that occurs per 10 million m of weft is recorded when producing a fabric using a polyamide monofilament as the weft and a weft driving speed of 750 m / min. The number of times was less than 5 times, and it was considered acceptable. The smaller the number of times, the better.
 K.織物品位
 ポリアミドモノフィラメントを緯糸に用いて織物を作製し、目視検査にて織物50mあたりでのムラやスジの発生状態によって以下の三段階で評価し、○以上の評価結果で合格とした。
S:布帛にスジやムラがなく、優れた品位を有する。
A:わずかなスジやムラが発生しているが、製品として使用するには問題ない。
B:スジやムラが発生しており、製品として使用できない。
K. Fabric quality Fabrics were produced using polyamide monofilaments as wefts, and evaluated by visual inspection to evaluate the following three stages according to the occurrence of unevenness and streaks around 50 m of fabric.
S: The fabric has no streaks or unevenness and has excellent quality.
A: Although slight streaks and unevenness are generated, there is no problem in using as a product.
B: Streaks and unevenness occur and cannot be used as a product.
 (実施例1)
 ベースポリマーとして、酸化チタン含有量0.02重量%のポリヘキサメチレンアジパミド(硫酸相対粘度2.80、融点262℃)を水分率0.135重量%となるよう調整した。該チップを図1に示す紡糸機に投入し、紡糸温度289℃にて溶融し、吐出孔径0.55mm、孔長9.5mmの丸孔を4ホール有する紡糸口金1から紡出させた。冷却装置3で糸条に冷風を吹き付けて冷却固化し、オイリングローラー方式の給油装置4にて重量平均分子量500以下の炭化水素または脂肪酸アルキルエステルからなる成分の量を油剤重量に対して70重量%に調整した油剤を糸に付与した後、引き取りローラー5の周速度(引取速度)を774m/分(設定値)で引き取った。続いて、引き取りローラー5に糸を3.5回巻き付けた後、表面温度190℃の延伸ローラー6で引き取ることにより、ローラー間で延伸倍率4.03倍にて延伸した。延伸ローラー6に5.5回巻き付けて(糸長換算3.8m)熱処理をした後、巻取速度を3000m/分(設定値)としたワインダー7で巻き取り、8dtexのポリヘキサメチレンアジパミドモノフィラメントを得た。得られたモノフィラメントにて織物を作製した。モノフィラメントおよび織物の評価結果を表1に示す。
Example 1
As a base polymer, polyhexamethylene adipamide having a titanium oxide content of 0.02% by weight (sulfuric acid relative viscosity 2.80, melting point 262 ° C.) was adjusted to a moisture content of 0.135% by weight. The chip was put into the spinning machine shown in FIG. 1, melted at a spinning temperature of 289 ° C., and spun from a spinneret 1 having 4 holes each having a discharge hole diameter of 0.55 mm and a hole length of 9.5 mm. The cooling device 3 cools and solidifies the yarn by blowing cold air, and the oiling device 4 of the oiling roller system uses 70% by weight of the component consisting of hydrocarbon or fatty acid alkyl ester having a weight average molecular weight of 500 or less based on the weight of the oil agent. After applying the adjusted oil to the yarn, the peripheral speed (take-off speed) of the take-up roller 5 was taken up at 774 m / min (set value). Subsequently, after winding the yarn around the take-up roller 5 3.5 times, the yarn was taken up by the draw roller 6 having a surface temperature of 190 ° C., and drawn between the rollers at a draw ratio of 4.03 times. After being wound 5.5 times around the drawing roller 6 (yarn length conversion: 3.8 m), it was wound up by a winder 7 with a winding speed of 3000 m / min (set value), and 8 dtex polyhexamethylene adipamide A monofilament was obtained. A woven fabric was produced from the obtained monofilament. The evaluation results of the monofilament and the woven fabric are shown in Table 1.
 (実施例2)
 延伸ローラー6の表面温度を185℃としたこと以外は実施例1と同様の条件にてモノフィラメントを得た。得られたモノフィラメントの評価結果を表1に示す。
(Example 2)
A monofilament was obtained under the same conditions as in Example 1 except that the surface temperature of the stretching roller 6 was 185 ° C. The evaluation results of the obtained monofilament are shown in Table 1.
 (実施例3)
 給油装置4にて重量平均分子量500以下の炭化水素または脂肪酸アルキルエステルからなる成分の量を油剤重量に対して88重量%に調整した油剤を付与し、延伸ローラー6で熱処理する際の巻き付け回数を4.5回(糸長換算3.1m)としたこと以外は実施例1と同様の条件にてモノフィラメントを得た。得られたモノフィラメントの評価結果を表1に示す。
(Example 3)
The oil supply device 4 is provided with an oil agent in which the amount of the component consisting of hydrocarbon or fatty acid alkyl ester having a weight average molecular weight of 500 or less is adjusted to 88% by weight with respect to the oil agent weight, and the number of windings when the heat treatment is performed with the stretching roller 6 is performed. A monofilament was obtained under the same conditions as in Example 1 except that 4.5 times (yarn length conversion: 3.1 m). The evaluation results of the obtained monofilament are shown in Table 1.
 (実施例4)
 オイリングローラー方式の給油装置4のローラー回転数を糸の油剤付着量が1.0重量%となるように調整し、延伸ローラー6で熱処理する際の巻き付け回数を4.5回(糸長換算3.1m)としたこと以外は実施例1と同様の条件にてモノフィラメントを得た。得られたモノフィラメントの評価結果を表1に示す。
Example 4
Adjusting the roller rotation speed of the oiling device 4 of the oiling roller system so that the amount of oil applied to the yarn is 1.0% by weight, the number of windings when heat-treating with the drawing roller 6 is 4.5 times (3 in terms of yarn length) 0.1 m), a monofilament was obtained under the same conditions as in Example 1. The evaluation results of the obtained monofilament are shown in Table 1.
 (比較例1)
 オイリングローラー方式の給油装置4のローラー回転数を糸の油剤付着量が1.65重量%となるように調整し、延伸ローラー6で熱処理する際の巻き付け回数を4.5回(糸長換算3.1m)としたこと以外は実施例1と同様の条件にてモノフィラメントを得た。得られたモノフィラメントの評価結果を表1に示す。
(Comparative Example 1)
Adjusting the number of rotations of the oiling device 4 of the oiling roller system so that the amount of oil applied to the yarn is 1.65% by weight, the number of windings when heat treating with the drawing roller 6 is 4.5 times (3 in terms of yarn length) 0.1 m), a monofilament was obtained under the same conditions as in Example 1. The evaluation results of the obtained monofilament are shown in Table 1.
 (実施例5)
 延伸ローラー6の表面温度を180℃とし、延伸ローラー6で熱処理する際の巻き付け回数を4.5回(糸長換算3.1m)としたこと以外は実施例1と同様の条件にてモノフィラメントを得た。得られたモノフィラメントの評価結果を表1に示す。
(Example 5)
The monofilament was formed under the same conditions as in Example 1 except that the surface temperature of the drawing roller 6 was 180 ° C., and the number of windings when the heat treatment was performed with the drawing roller 6 was 4.5 times (yarn length conversion 3.1 m). Obtained. The evaluation results of the obtained monofilament are shown in Table 1.
 (比較例2)
 延伸ローラー6の表面温度を175℃とし、延伸ローラー6で熱処理する際の巻き付け回数を4.5回(糸長換算3.1m)としたこと以外は実施例1と同様の条件にてモノフィラメントを得た。得られたモノフィラメントの評価結果を表2に示す。
(Comparative Example 2)
The monofilament was formed under the same conditions as in Example 1 except that the surface temperature of the drawing roller 6 was 175 ° C., and the number of windings when the heat treatment was performed with the drawing roller 6 was 4.5 times (yarn length conversion 3.1 m). Obtained. The evaluation results of the obtained monofilament are shown in Table 2.
 (実施例6)
 給油装置4にて平滑成分として使用する炭化水素の重量平均分子量を表1のとおり変更して調整した油剤を糸に付与したこと以外は実施例1と同様の条件にてモノフィラメントを得た。得られたモノフィラメントの評価結果を表2に示す。
(Example 6)
Monofilaments were obtained under the same conditions as in Example 1, except that the oil agent adjusted by changing the weight average molecular weight of the hydrocarbon used as a smoothing component in the oil supply device 4 as shown in Table 1 was applied to the yarn. The evaluation results of the obtained monofilament are shown in Table 2.
 (比較例3)
 延伸ローラー6で熱処理する際の巻き付け回数を3.5回(糸長換算2.4m)としたこと以外は実施例1と同様の条件にてモノフィラメントを得た。得られたモノフィラメントの評価結果を表2に示す。
(Comparative Example 3)
A monofilament was obtained under the same conditions as in Example 1 except that the number of windings when heat-treating with the drawing roller 6 was 3.5 (yarn length conversion: 2.4 m). The evaluation results of the obtained monofilament are shown in Table 2.
 (実施例7、8)
 給油装置4にて溶媒として使用する溶媒の粘度を表1のとおり変更して調整した油剤を糸に付与したこと以外は実施例1と同様の条件にてモノフィラメントを得た。得られたモノフィラメントの評価結果を表2に示す。
(Examples 7 and 8)
A monofilament was obtained under the same conditions as in Example 1, except that the oil agent adjusted by changing the viscosity of the solvent used as the solvent in the oil supply device 4 as shown in Table 1 was applied to the yarn. The evaluation results of the obtained monofilament are shown in Table 2.
Figure JPOXMLDOC01-appb-T000001
Figure JPOXMLDOC01-appb-T000001
Figure JPOXMLDOC01-appb-T000002
Figure JPOXMLDOC01-appb-T000002
1:紡糸口金
2:蒸気噴出装置
3:冷却装置
4:給油装置
5:引き取りローラー
6:延伸ローラー
7:ワインダー(巻取装置)
1: Spinneret 2: Steam ejection device 3: Cooling device 4: Refueling device 5: Take-up roller 6: Stretching roller 7: Winder (winding device)

Claims (2)

  1.  油剤付着量が0.1~1.5重量%であり、付着している油剤中の重量平均分子量500以下の炭化水素および脂肪酸アルキルエステルからなる成分の割合が油剤の全成分あたり40重量%以下であるポリアミドモノフィラメント。 The amount of the oil agent adhering is 0.1 to 1.5% by weight, and the proportion of the component consisting of hydrocarbon and fatty acid alkyl ester having a weight average molecular weight of 500 or less in the adhering oil agent is 40% by weight or less for all components of the oil agent Is a polyamide monofilament.
  2.  油剤付着量の糸長手方向の変動率が20%以下である請求項1に記載のポリアミドモノフィラメント。 The polyamide monofilament according to claim 1, wherein the rate of fluctuation of the amount of oil agent in the longitudinal direction of the yarn is 20% or less.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021246270A1 (en) * 2020-06-02 2021-12-09 東レ株式会社 Polyamide monofilament

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS467637B1 (en) * 1967-12-25 1971-02-25
JPS6342912A (en) * 1986-08-01 1988-02-24 Kanebo Ltd Production of monofilament yarn
JPH03143341A (en) * 1989-10-26 1991-06-18 Toray Monofilament Co Ltd Fishing line
JP2004250840A (en) * 2003-02-21 2004-09-09 Toray Ind Inc Stainproof fiber and use thereof
JP2007270363A (en) * 2006-03-30 2007-10-18 Toray Monofilament Co Ltd Monofilament and industrial woven fabric
JP2008057085A (en) 2006-08-31 2008-03-13 Toray Ind Inc Method and apparatus for producing polyamide monofilament
JP2012222112A (en) 2011-04-07 2012-11-12 Canon Inc Display unit, and heat dissipation method thereof
WO2016052287A1 (en) 2014-09-30 2016-04-07 東レ株式会社 Polyamide monofilament and fiber package thereof

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS467637B1 (en) * 1967-12-25 1971-02-25
JPS6342912A (en) * 1986-08-01 1988-02-24 Kanebo Ltd Production of monofilament yarn
JPH03143341A (en) * 1989-10-26 1991-06-18 Toray Monofilament Co Ltd Fishing line
JP2004250840A (en) * 2003-02-21 2004-09-09 Toray Ind Inc Stainproof fiber and use thereof
JP2007270363A (en) * 2006-03-30 2007-10-18 Toray Monofilament Co Ltd Monofilament and industrial woven fabric
JP2008057085A (en) 2006-08-31 2008-03-13 Toray Ind Inc Method and apparatus for producing polyamide monofilament
JP2012222112A (en) 2011-04-07 2012-11-12 Canon Inc Display unit, and heat dissipation method thereof
WO2016052287A1 (en) 2014-09-30 2016-04-07 東レ株式会社 Polyamide monofilament and fiber package thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021246270A1 (en) * 2020-06-02 2021-12-09 東レ株式会社 Polyamide monofilament

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