TWI825445B - Dilution of treatment agent for interlaced stretched yarn and method for producing interlaced stretched yarn - Google Patents

Abstract

The problem to be solved by the present invention is to efficiently adhere a diluted solution of a treatment agent for interlaced drawn yarns to the drawn yarns while suppressing a decrease in energy efficiency. The diluted solution of the treatment agent for interlaced drawn yarns contains a treatment agent for interwoven drawn yarns containing a surfactant and a volatile diluent. When the total content ratio of the treatment agent for intertwined drawn yarns and the volatile diluent in the diluent is 100 mass %, the diluent contains the treatment agent for intertwined drawn yarns in a proportion of 30 mass % or more and less than 94 mass %, and The volatile diluent is contained in a proportion of more than 6% by mass and less than 70% by mass. The diluting liquid is applied to a spinning device that applies the diluting liquid to the yarn after stretching the spun yarn and before winding it up.

Description

Diluent of treatment agent for interlaced drawn yarn, and method for producing intertwined drawn yarn

The present invention relates to a diluent of a treatment agent for interwoven and drawn yarns and a method for producing interwoven and drawn yarns.

The intertwined drawn yarn is produced, for example, by performing the following steps: a spinning and drawing step of melting the raw material resin of the intertwined drawn yarn with heat to spin and draw it; an interlacing step of interlacing the drawn fibers; The final fiber undergoes the coiling step of coiling.

In the production process of interlaced drawn yarns, in order to improve fiber bundling properties, a diluted solution of a treatment agent for interlaced drawn yarns may be used.

Patent Document 1 describes a method for producing polyester fibers, in which it is disclosed that an emulsion-type oil agent (a dilution of a treatment agent for drawing yarns) containing 12% by weight of a surfactant component is adhered to the fibers after heating and drawing. .

Prior technical literature patent documents Patent Document 1: Japanese Patent Application Publication No. Sho 61-194218

Invent the problem to be solved In addition, if the diluent is adhered before stretching in the spin-stretch step, the heat of the heating roller will be absorbed by the vaporization of the diluent when the fiber is stretched in the spin-stretch step, so energy efficiency may be reduced. . In addition, if the diluent is adhered after stretching, it may be difficult for the diluent to adhere efficiently because the yarn speed after stretching is generally high.

The present invention was made in view of such circumstances, and an object thereof is to provide a diluted solution of a treatment agent for interlaced drawn yarns that can suppress a decrease in energy efficiency and efficiently adhere to the drawn yarns. Another object of the present invention is to provide a method for producing interlaced drawn yarns using a dilution of the treatment agent for interwoven drawn yarns.

means to solve problems The diluted liquid of the treatment agent for interlaced drawn yarns used to solve the above problems contains a treatment agent for interwoven drawn yarns containing a surfactant and a volatile diluent. The key point is that when the above-mentioned interwoven drawn yarns are treated with When the total content ratio of the agent and the above-mentioned volatile diluent is 100% by mass, the above-mentioned treatment agent for interlaced drawn yarns is contained in a ratio of 30% by mass or more and less than 94% by mass, and the treatment agent for interlaced drawn yarns is contained in a ratio of more than 6% by mass and 70% by mass. The above-mentioned volatile diluent is contained in the following ratio; the above-mentioned diluent is applied to a spinning device that applies the above-mentioned diluent to a position after stretching the spun yarn and before winding it up. The above silk.

The dilution of the treatment agent for interwoven and drawn yarns preferably has a kinematic viscosity of 10 to 1000 mm ² /s at 30°C.

The diluted liquid of the treatment agent for interlaced drawn yarns is preferably: when the total content ratio of the treated agent for interlaced drawn yarns and the volatile diluent in the diluted liquid is 100% by mass, 35 to 70% by mass %, and the volatile diluent is contained in a ratio of 30 to 65% by mass.

In the diluent of the treatment agent for interlaced drawn yarns, it is preferable that the volatile diluent contains water.

The dilution of the above-mentioned treatment agent for interwoven stretched yarns is preferably: the above-mentioned surfactant contains an ionic surfactant, and the above-mentioned ionic surfactant contains fatty acid salts, organic phosphates, organic sulfonates, amphoteric compounds and quaternary compounds. At least one of the ammonium salts.

The dilution of the above-mentioned treatment agent for interwoven drawn yarns is preferably: the above-mentioned surfactant further contains a nonionic surfactant; when the above-mentioned nonionic surfactant and the above-mentioned ionic interface in the above-mentioned treatment agent for interwoven drawn yarns When the total content of active agents is 100% by mass, the treatment agent for interlaced drawn yarns contains the nonionic surfactant in a proportion of 80 to 99.9% by mass, and the ionic surfactant in a proportion of 0.1 to 20% by mass. Surfactants.

The dilution of the above-mentioned treatment agent for interwoven and drawn yarns is preferably: the above-mentioned treatment agent for interwoven and drawn yarns further contains a smoothing agent, and the above-mentioned surfactant further contains a nonionic surfactant; when the above-mentioned treatment agent for interwoven and drawn yarns contains When the total content ratio of the above-mentioned smoothing agent, the above-mentioned nonionic surfactant and the above-mentioned ionic surfactant is 100% by mass, the above-mentioned treatment agent for interlaced drawn yarns contains the above-mentioned smoothing agent in a proportion of 30 to 80% by mass, and The nonionic surfactant is contained in a proportion of 5 to 69.9% by mass, and the ionic surfactant is contained in a proportion of 0.1 to 20% by mass.

A method for producing intertwined drawn yarns to solve the above-mentioned problems focuses on having a spinning and drawing step of spinning synthetic fibers and drawing them, and a winding step of winding the drawn yarns obtained in the spinning and drawing step. In the series of spinning, drawing and winding steps, there is provided a step of applying a diluent of the treatment agent for interlaced drawn yarns to the drawn yarn after the spinning and drawing step and before the winding step, and a step of performing an interlacing treatment. Interweaving steps.

The method for producing the above-mentioned interlaced drawn yarn is preferably such that, in the above-mentioned applying step, the dilution of the above-mentioned interlaced drawn yarn treatment agent is added to the above-mentioned drawn yarn in a ratio of 0.1 mass % to 3.0 mass % as the treatment agent for interlaced drawn yarn. liquid.

In the method for producing the interlaced drawn yarn, it is preferable that the adhesion amount of the synthetic fiber treatment agent to the yarn before drawing in the spinning and drawing step is less than 0.2 mass %.

In the above-mentioned manufacturing method of the interlaced drawn yarn, it is preferable that the winding speed of the drawn yarn in the above-mentioned winding step is 3500 m/min or more.

Invention effect According to the diluted solution of the treatment agent for interlaced drawn yarns and the method for producing the interlaced drawn yarns of the present invention, it is possible to efficiently adhere the diluted liquid to the drawn yarns while suppressing a decrease in energy efficiency.

(1st Embodiment)

A first embodiment in which a diluted liquid (hereinafter also simply referred to as a diluted liquid) of the treatment agent for interlaced drawn yarns of the present invention is embodied will be described.

The diluent of this embodiment is obtained by diluting a treatment agent for interlaced drawn yarns (hereinafter also referred to as a treatment agent) containing a surfactant with a volatile diluent, and is applied to synthetic fibers that have been spun and drawn (hereinafter referred to as a treatment agent). Also referred to as extension wire). The diluting liquid is applied to a spinning device that applies the diluting liquid to the drawn yarn at a position after drawing the spun yarn but before winding it up. That is, the diluent adheres to the drawn yarn before being wound up by a winding device such as a winding machine.

In addition, when the total content ratio of the processing agent and the volatile diluent in the diluent is 100% by mass, the diluent contains the processing agent in a ratio of 30% by mass or more and less than 94% by mass, and the diluent contains the processing agent in a ratio of more than 6% by mass. And it contains volatile diluent in a proportion of 70% by mass or less.

By applying a diluent to the drawing yarn, the decrease in energy efficiency can be suppressed. In addition, by applying the diluent to a spinning device that applies the diluent to the drawn filaments after drawing the spun yarn and before taking it up, it is possible to contribute to the productivity of the interlaced drawn yarn. improve. In addition, by setting the treatment agent and the volatile diluent in the dilution liquid to have the above content ratio, the concentration of the treatment agent in the dilution liquid is appropriate, so that the treatment agent can be efficiently adhered to the drawn yarn.

When the total content ratio of the processing agent and the volatile diluent in the diluent is 100% by mass, the diluent preferably contains the processing agent in a ratio of 35 to 70% by mass, and the diluent in a ratio of 30 to 65% by mass. Volatile diluent.

The dynamic viscosity of the above-mentioned diluent at 30°C is preferably 10 to 1000 mm ² /s. By setting the dynamic viscosity of the diluent within the above numerical range, oil drop of the diluent can be more effectively suppressed as described below. Furthermore, the treatment agent can be more efficiently adhered to the drawing yarn. The dynamic viscosity of the diluted liquid at 30° C. is more preferably 20 mm ² /s or more, and more preferably 500 mm ² /s or less.

Specific examples of the volatile diluent include water, organic solvents, low-viscosity mineral oil, and the like. Specific examples of the organic solvent include hexane, ethanol, isopropyl alcohol, ethylene glycol, propylene glycol, diethyl ether, toluene, xylene, dimethylformamide, methyl ethyl ketone, chloroform, and the like. Specific examples of low-viscosity mineral oils include mineral oils with a dynamic viscosity of 5 mm ² /s or less at 30° C., and more specifically, paraffins having 11 to 13 carbon atoms, and alkanes having 12 carbon atoms. Paraffins, paraffins with 13 to 15 carbon atoms, paraffins with 14 carbon atoms, etc. Among the volatile diluents, water is preferably contained in order to achieve excellent handleability. These volatile diluents may be used individually by 1 type or in combination of 2 or more types.

Here, the volatile diluent refers to a material that completely volatilizes when heat-treated at 105° C. for 2 hours. Regarding the proportion of the treatment agent in the diluent, for example, a 10g sample of the dilution solution can be collected in a petri dish, heat-treated at 105°C for 2 hours, and the proportion of the treatment agent can be calculated based on the mass ratio of the remaining sample at this time.

Specific examples of the surfactant include anionic surfactants, cationic surfactants, ionic surfactants such as amphoteric surfactants which are amphoteric compounds, or nonionic surfactants. These surfactants may be used individually by 1 type or in combination of 2 or more types.

Specific examples of the anionic surfactant include: (1) fatty acid salts such as acetate, octanoate, laurate, oleate, and stearate; (2) octyl phosphate salt, lauryl salt, etc. Organic phosphates that are phosphate esters of aliphatic alcohols such as phosphate ester salts, cetyl phosphate ester salts, oleyl alcohol phosphate ester salts, and stearyl phosphate ester salts; (3) Polyoxyethylene lauryl ether phosphate ester salts , polyoxyethylene oil ether phosphate ester salt, polyoxyethylene stearyl ether phosphate ester salt, etc. are added to an aliphatic alcohol with at least one alkylene oxide selected from ethylene oxide and propylene oxide as a phosphate ester. Salt organic phosphates; (4) Lauryl sulfonate, myristyl sulfonate, pentadecyl sulfonate, hexadecyl sulfonate, oleyl alcohol sulfonate, stearyl sulfonate , Second alkyl sulfonate (C13~15) salt, dioctyl sulfosuccinate, dodecyl benzene sulfonate and other organic sulfonates; (5) Lauryl sulfate salt, oleyl alcohol sulfate Sulfate ester salts of aliphatic alcohols such as stearyl sulfate ester salt; (6) polyoxyethylene lauryl ether sulfate salt, polyoxyalkylene (polyoxyethylene, polyoxypropylene) lauryl ether sulfate salt Sulfate ester salts formed by adding at least one alkylene oxide selected from ethylene oxide and propylene oxide to an aliphatic alcohol, such as polyoxyethylene oil ether sulfate ester salt; (7) castor oil fatty acid sulfate ester salt, Sesame oil fatty acid sulfate salt, rosin oil fatty acid sulfate salt, soybean oil fatty acid sulfate salt, rapeseed oil fatty acid sulfate salt, palm oil fatty acid sulfate salt, lard fatty acid sulfate salt, tallow fatty acid sulfate salt, whale oil Fatty acid sulfate ester salts and other fatty acid sulfate ester salts; (8) Castor oil sulfate ester salts, sesame oil sulfate ester salts, rosin oil sulfate ester salts, soybean oil sulfate ester salts, rapeseed oil sulfate ester salts, palm Sulfate ester salts of fats and oils such as oil sulfate ester salts, lard sulfate ester salts, tallow sulfate ester salts, whale oil sulfate ester salts, etc.; (9) Fatty acids such as caprylic acid, lauric acid, oleic acid, stearic acid, etc.; etc. wait.

Examples of counter ions constituting the anionic surfactant include alkali metal salts, amine salts, and the like. Specific examples of alkali metal salts include sodium salts, potassium salts, and the like. Specific examples of the amine salt include: (1) methylamine, dimethylamine, trimethylamine, ethylamine, diethylamine, triethylamine, N-N-diisopropylethylamine, butylamine, dibutylamine Amine, 2-methylbutylamine, tributylamine, octylamine, dimethyllaurylamine and other aliphatic amines; (2) Aniline, N-methylbenzylamine, pyridine, morpholine, pyrazine, and their derivatives aromatic amines or heterocyclic amines; (3) monoethanolamine, N-methylethanolamine, diethanolamine, triethanolamine, isopropanolamine, diisopropanolamine, triisopropanolamine, dibutylethanolamine , butyldiethanolamine, octyldiethanolamine, lauryldiethanolamine and other alkanolamines; (4) N-methylbenzylamine and other arylamines; (5) polyoxyethylene lauryl amino ether, polyoxyethylene Polyoxyalkylene alkylamino ethers such as stearyl amino ether; (6) Ammonia; etc.

Specific examples of the cationic surfactant include lauryltrimethylammonium chloride, cetyltrimethylammonium chloride, stearyltrimethylammonium chloride, and behenyltrimethylammonium chloride. quaternary ammonium salts such as methyl ammonium chloride and didecyl dimethyl ammonium chloride.

Specific examples of amphoteric surfactants include betaine-type amphoteric surfactants.

Examples of types of nonionic surfactants include compounds in which alkylene oxide is added to alcohols or carboxylic acids, ether-ester compounds in which alkylene oxide is added to ester compounds of carboxylic acids and alcohols, Compounds obtained by adding alkylene oxide to natural fats and oils, etc.

Specific examples of alcohols used as raw materials for nonionic surfactants include: (1) methanol, ethanol, propanol, butanol, pentanol, hexanol, octanol, nonanol, and decanol , undecyl alcohol, dodecyl alcohol, tridecyl alcohol, myristyl alcohol, pentadecyl alcohol, cetyl alcohol, heptadecanol, stearyl alcohol, nonadecanol, eicosanol , heptacosanol, behenyl alcohol, tricosanol, tetracosanol, pentacosanol, hexacosanol, heptacosanol, octacosanol, dicosanol Linear alkyl alcohols such as nonadecanol and triacontanol; (2) Isopropyl alcohol, isobutanol, isohexanol, 2-ethylhexanol, isononyl alcohol, isodecanol, isododecanol , isotridedecyl alcohol, isostearyl alcohol, isostearyl alcohol, isohetadecanol, isohetadecanol, isostearyl alcohol, isostearyl alcohol, isostearyl alcohol, isostearyl alcohol, Heptacosanol, isodocosanol, isotricosanol, isopentetracosanol, isopentacosanol, isohexadecanol, isoheptacosanol, isodidiosanol Branched alkyl alcohols such as stearyl alcohol, isopentadecyl alcohol, isopentadecanol; (3) Tetradecenol, hexadecenol, heptadecenol, octadecenol, nonadecene Linear alkenyl alcohols such as alcohol; (4) Branched alkenyl alcohols such as isohexadecenyl alcohol and isostearenol; (5) Cyclic alkyl alcohols such as cyclopentanol and cyclohexanol; (6) Phenol , benzyl alcohol, monostyrenated phenol, distyrenated phenol, tristyrenated phenol and other aromatic alcohols; etc.

Specific examples of carboxylic acids used as raw materials for nonionic surfactants include: (1) caprylic acid, nonanoic acid, capric acid, undecanoic acid, dodecanoic acid, tridecanoic acid, and decanoic acid. Tetradecanoic acid, pentadecanoic acid, hexadecanoic acid, heptadecanoic acid, octadecanoic acid, nonadecanoic acid, eicosanoic acid, hexadecanoic acid, behenic acid and other linear alkyl groups Carboxylic acids; (2) Branched alkyl carboxylic acids such as 2-ethylhexanoic acid, isododecanoic acid, isotridecanoic acid, isotetradecanoic acid, isohexadecanoic acid, isostearanoic acid; (3) Linear alkenyl carboxylic acids such as octadecenoic acid, octadecadienoic acid, and octadecatrienoic acid; (4) Aromatic carboxylic acids such as benzoic acid; etc.

Specific examples of alkylene oxide used as a raw material of the nonionic surfactant include ethylene oxide, propylene oxide, and the like. The number of moles of alkylene oxide added can be appropriately set, but is preferably 0.1 to 60 moles, more preferably 1 to 40 moles, and most preferably 2 to 30 moles. In addition, the addition mole number of alkylene oxide means the mole number of alkylene oxide with respect to 1 mole of alcohols or carboxylic acids added to a raw material.

Specific examples of polyols used as raw materials for nonionic surfactants include ethylene glycol, propylene glycol, 1,3-propanediol, 1,2-butanediol, and 1,3-butanediol. 1,4-butanediol, 1,4-butanediol, 2-methyl-1,2-propanediol, 1,5-pentanediol, 1,6-hexanediol, 2,5-hexanediol , 2-methyl-2,4-pentanediol, 2,3-dimethyl-2,3-butanediol, glycerin, 2-methyl-2-hydroxymethyl-1,3-propanediol, 2 -Ethyl-2-hydroxymethyl-1,3-propanediol, trimethylolpropane, sorbitol, neopentylerythritol, sorbitol, etc.

Specific examples of natural fats and oils used as raw materials for nonionic surfactants include coconut oil, rapeseed oil, sunflower oil, soybean oil, castor oil, sesame oil, fish oil, and beef tallow.

Examples of other nonionic surfactants include: (1) alkylamide-type nonionic surfactants such as diethanolamide stearate and diethanolamine monolaurylamide; (2) polyoxyethylene diamine Polyoxyalkylene fatty acid amide type nonionic surfactants such as ethanolamine monooleyl alcoholamide, polyoxyethylene laurylamine, polyoxyethylene tallow amine, etc.; etc.

Specific examples of the nonionic surfactant include polyoxyethylene (10 mol) alkyl (12, 13 carbon atoms) ether, polyoxyethylene (20 mol) hydrogenated castor oil ether, polyoxyethylene Ethylene (9 moles) alkyl (12 to 14 carbon atoms) ether, polyoxyethylene (5 moles) alkyl (12 to 14 carbon atoms) ether, polyoxyethylene (13 moles) polyoxypropylene ( 9 moles) butyl ether, polyoxyethylene (55 moles) polyoxypropylene (43 moles) trimethylolpropane ether, polyoxyethylene (15 moles) polyoxypropylene (10 moles) alkyl (carbon Atom number 16, 18) ether, etc.

When the surfactant contains an ionic surfactant, the ionic surfactant preferably contains at least one selected from fatty acid salts, organic phosphates, organic sulfonates, amphoteric compounds, and quaternary ammonium salts.

The above-mentioned surfactant may contain both a nonionic surfactant and an ionic surfactant. In this case, when the total content ratio of the nonionic surfactant and the ionic surfactant in the treatment agent is 100% by mass, the treatment agent preferably contains the nonionic surfactant in a ratio of 80 to 99.9% by mass. surfactant, and contains an ionic surfactant in a proportion of 0.1 to 20% by mass.

The treatment agent may further contain a smoothing agent. In this case, the surfactant preferably contains both a nonionic surfactant and an ionic surfactant. In addition, when the total content ratio of the smoothing agent, nonionic surfactant and ionic surfactant in the treatment agent is 100% by mass, the treatment agent preferably contains the smoothing agent, The nonionic surfactant is contained in a proportion of 5 to 69.9 mass %, and the ionic surfactant is contained in a proportion of 0.1 to 20 mass %.

The smoothing agent preferably contains at least one selected from esters and mineral oil (excluding components used as volatile diluents).

The ester used as a smoothing agent is not particularly limited, and examples thereof include: (1) aliphatic esters such as octyl palmitate, oleyl laurate, lauryl oleate, oleyl oleate, and isotetradecyl oleate. Ester compounds of monoalcohols and aliphatic monocarboxylic acids; (2) 1,6-hexanediol didecanoate, triolein, trimethylolpropane trilaurate, neopentylerythritol tetracaprylate Ester compounds of aliphatic polyols and aliphatic monocarboxylic acids such as esters and sorbitan monooleate; (3) Dioleyl azelate, dioleyl thiodipropionate, dioleyl thiodipropionate Ester compounds of aliphatic monoalcohols such as isocetyl ester and diisostearyl thiodipropionate and aliphatic polycarboxylic acids; (4) aromatic monoalcohols such as benzyl oleate and benzyl laurate and Ester compounds of aliphatic monocarboxylic acids; (5) Ester compounds of aromatic polyols such as bisphenol A dilaurate and aliphatic monocarboxylic acids; (6) Bis-2-ethylhexyl phthalate, Ester compounds of aliphatic monoalcohols and aromatic polycarboxylic acids such as diisostearyl isophthalate and trioctyl trimellitate; (7) Coconut oil, rapeseed oil, sunflower oil, soybean oil , natural oils such as castor oil, sesame oil, fish oil and butter; etc. In addition, known smoothing agents and the like used in treating agents for interlaced drawn yarns can also be used.

Specific examples of the smoothing agent include mineral oil (dynamic viscosity at 30° C.: 47 mm ² /s), lauryl oleate, octyl palmitate, triolein, sorbitan monooleate, and the like. .

The above-mentioned smoothing agent may be used individually by 1 type, or may be used in combination of 2 or more types.

(Second Embodiment)

A second embodiment that embodies the interlaced drawn yarn manufacturing method of the present invention will be described. In the method for producing intertwined drawn yarns according to the present embodiment, a series of spinning steps including a spin-drawing step of spinning and drawing synthetic fibers and a winding step of winding the drawn yarns obtained by the spinning-drawing step are performed. The drawing and winding step includes, after the spinning and drawing step and before the winding step, a step of applying a diluted solution of the treatment agent for intertwined drawn yarns according to the first embodiment to the drawn yarn, and an interlacing step of performing an interlacing treatment.

As a method of applying the diluent of the first embodiment to the drawn yarn, a method of adhering the diluent by a guided oiling method using a metering pump or the like can be applied.

The synthetic fibers used in the interwoven drawn yarns are not particularly limited, and examples thereof include polyester fibers, polyolefin fibers, polyamide fibers, polyacrylonitrile fibers, cellulose fibers, lignin fibers, and the like. These fibers may be composite synthetic fibers composed of two or more types. Specific examples of polyester fibers include polyethylene terephthalate (PET), polytrimethylene terephthalate, polybutylene terephthalate, and polyethylene naphthalate. ester, polylactic acid, composite polyester fibers containing these polyester resins, etc. In addition, as the polyester fiber, modified polyester fibers such as alkaline or acid dyeable polyester fiber, antistatic polyester fiber, and flame retardant polyester fiber can be used. Specific examples of polyolefin-based fibers include polyethylene fibers, polypropylene-based fibers, and polybutylene-based fibers. In addition, as the polypropylene-based fiber, modified polypropylene fiber obtained by copolymerizing various monomers, composite polypropylene fiber of polyethylene and polypropylene, etc. can be applied. Among them, when used for polyester fibers, the effect of the diluent of the present invention can be better exhibited.

The manufacturing method of the interwoven drawn yarn is preferably carried out through the following steps 1 to 5. Step 1: Heat and melt the raw material resin of the interwoven and drawn yarns, and perform the spinning step of melt spinning. Step 2: The fiber obtained in step 1 above is subjected to a stretching step of spinning and stretching. Step 3: a step of applying the diluent of the first embodiment to the drawn yarn obtained by spinning and drawing. Step 4: An interlacing step of interlacing the drawn yarns that have undergone step 3 above. Step 5: The winding step of winding the interlaced drawn yarn that has undergone the above-mentioned step 4 on a winding machine.

It should be noted that the above steps 1 and 2 are collectively referred to as the spinning and stretching step. In addition, the above steps 1, 2 and 5 are collectively referred to as a series of spinning, stretching and winding steps.

In the above-mentioned stretching step, for example, the following method can be adopted: using two rollers composed of a heated traction roller (hereinafter also referred to as the first roller) and a heated stretching roller (hereinafter also referred to as the second roller), passing the two rollers The difference in peripheral speed is extended.

The adhesion amount of the synthetic fiber treatment agent to the yarn before stretching in the spinning and stretching step is preferably less than 0.2 mass %, more preferably 0.1 mass % or less, and most preferably 0 mass %. That is, it is preferable that no synthetic fiber treatment agent including the treatment agent of the first embodiment adheres to the yarn before drawing.

The yarn speed of the drawn yarn that has undergone the drawing step is not particularly limited, but the yarn speed is preferably 3500 m/min or more. That is, the winding speed of the drawn yarn in the winding step is preferably 3500 m/min or more. Even to the yarn moving at such a high speed, the adhesion does not decrease, so the diluent can be efficiently supplied and the yarn can be efficiently produced.

In the above-mentioned adding step, it is preferable to add a dilution solution of the treatment agent for interlaced drawn yarns to the drawn yarn in a proportion of 0.1 to 3.0% by mass of the treating agent for interlaced drawn yarns.

In the above-mentioned interlacing step, it is preferable to blow air from a direction perpendicular to the direction of progress of the fibers before winding up the drawn yarn that has undergone step 3 on the winding machine, and to supply the drawn yarn to a machine for interlacing the filaments. During the interlacing process (hereinafter also referred to as the I/L step).

The following effects can be obtained by using the diluent and drawn yarn of this embodiment.

(1) The diluent of this embodiment contains a treatment agent for interlaced drawn yarns containing a surfactant and a volatile diluent. When the total content ratio of the treatment agent for intertwined drawn yarns and the volatile diluent in the diluent is 100 mass %, the treatment agent for intertwined drawn yarns is included in a proportion of 30 mass % or more and less than 94 mass %, and the treatment agent for intertwined drawn yarns is included in a proportion of more than 30 mass % and less than 94 mass %. The volatile diluent is contained in a proportion of 6% by mass to 70% by mass or less. In addition, the diluent is applied to a spinning device that imparts the diluent to the drawn filament at a position before winding up the drawn filament.

By adding a diluent to the drawn yarn, a decrease in energy efficiency can be suppressed. In addition, since uneven heating can be suppressed, the dyeability of the drawn yarn can be improved and yarn quality can be improved. In addition, by applying the dilution liquid to a spinning device that applies the dilution liquid to the drawn yarn before winding up the drawn yarn, it can contribute to an improvement in the productivity of the interlaced drawn yarn.

(2) If the concentration of the treatment agent in the diluent is low, the diluent will easily scatter due to the air in the I/L step. In addition, if the concentration of the treatment agent in the diluent is high, the diluent will not be coated on the fiber but will fall from the diluent application device, that is, so-called oil droplets will easily be generated. In the diluent of this embodiment, since the concentration of the treatment agent in the diluent is appropriate, scattering of the diluent in the I/L step and oil droplets in the device for applying the diluent can be suppressed. Therefore, the treatment agent can be efficiently adhered to the drawn yarn.

The above-described embodiment can be implemented with the following modifications. The above-described embodiments and the following modified examples can be implemented in combination with each other within the scope of not being technically inconsistent.

・In this embodiment, the diluent is adhered to the drawn yarn only after the drawing step, but the method is not limited to this. As long as the effects of the present invention are not hindered, instead of adhering the diluent to the drawn yarn after the drawing step, the diluting liquid may be attached before the drawing step.

・In this embodiment, the diluent is adhered to the drawn yarn after the drawing step and before the winding step, but the method is not limited to this method. The diluent may be adhered to the drawing yarn after the winding step.

・In this embodiment, the stretching step is performed using two rollers, the first roller and the second roller. However, the stretching step is not limited to this method. It is also possible to use more than 3 rollers for stretching. In addition, the transfer roller may be used separately from the stretching roller. That is, the stretching step may be performed using three or more rollers. In a system using three or more rollers, it is preferable that the diluent of the present embodiment is adhered to the drawn yarn that has passed through the last roller.

・The interleaving step can be performed before the imparting step. That is, after the interlacing step of interlacing the drawn yarns that have undergone the spinning and drawing step, a step of applying a diluted liquid of the treatment agent for synthetic fibers to a position between after drawing and before winding may be performed.

・In this embodiment, the treatment agent for interlaced drawn yarns contains a smoothing agent, but it is not limited to this embodiment. Smoothing agent can also be omitted.

・The diluent of this embodiment may further contain a stabilizer, a charge control agent, an antistatic agent, and a thickener for maintaining the quality of the treatment agent or diluent within a range that does not impede the effects of the present invention. Components commonly used in treatment agents or diluents such as antioxidants, ultraviolet absorbers, and defoaming agents (silicone-based compounds).

Example

Examples will be given below in order to explain the structure and effects of the present invention more specifically, but the present invention is not limited to these Examples. In addition, in the following description of an Example and a comparative example, a part means a mass part, and % means a mass %.

Test Category 1 (Manufacture of diluent of treatment agent for interlaced drawn yarns)

(Example 1) Each component shown in Table 1 was used, and the smoothing agent (A-1) was 30 mass%, the smoothing agent (A-2) was 30 mass%, the smoothing agent (A-5) was 10 mass%, and the nonionic interface The active agent (B-1) is 6 mass%, the nonionic surfactant (B-2) is 5 mass%, the nonionic surfactant (B-4) is 10 mass%, and the ionic surfactant ( C-1) was added to the beaker at 4 mass %, the ionic surfactant (C-2) was 4 mass %, and the ionic surfactant (C-3) was 1 mass %. These are stirred and mixed thoroughly to prepare a treatment agent (P-1) for interlaced drawn yarns.

The types, proportions, and total proportions of the smoothing agents used in the treatment agent for interlaced drawn yarns, the types, proportions, and total proportions of the nonionic surfactants, and the types, proportions, and total proportions of the ionic surfactants are shown in the table. 1 in the "Smoothing Agent" column, "Nonionic Surfactant" column and "Ionic Surfactant" column.

Table 1 Types of treatment agents for intertwined drawn yarns Smoothing agent nonionic surfactant ionic surfactant Total of all ingredients (mass %) symbol Proportion (mass %) Total proportion (mass %) symbol Proportion (mass %) Total proportion (mass %) symbol Proportion (mass %) Total proportion (mass %) P-1 A-1 A-2 A-5 30 30 10 70 B-1 B-2 B-4 6 5 10 twenty one C-1 C-2 C-3 4 4 1 9 100 P-2 A-1 A-2 A-5 25 30 10 65 B-1 B-2 B-4 B-7 6 5 10 5 26 C-1 C-2 C-3 4 4 1 9 100 P-3 A-2 A-4 A-5 35 20 10 65 B-1 B-2 B-4 6 10 10 26 C-1 C-2 C-3 4 4 1 9 100 P-4 - - - B-1 B-5 B-6 21 50 25 96 C-2 4 4 100 P-5 A-3 A-4 15 15 30 B-3 B-4 35 30 65 C-1 C-3 4 1 5 100 P-6 - - - B-1 B-4 B-5 B-7 14 10 50 25 99 C-3 1 1 100

(Smoothing agent) A-1: Mineral oil (dynamic viscosity at 30°C: 47 mm ² /s) A-2: Lauryl oleate A-3: Octyl palmitate A-4: Glyceryl triolein A-5: Sorbitan monooleate

(Nonionic surfactant) B-1: Polyoxyethylene (10 mol) alkyl (carbon number 12, 13) ether B-2: Polyoxyethylene (20 mol) hydrogenated castor oil ether B-3: Polyoxyethylene (9 mol) alkyl (12 to 14 carbon atoms) ether B-4: Polyoxyethylene (5 mol) alkyl (12 to 14 carbon atoms) ether B-5: Polyoxyethylene (13 moles) Polyoxypropylene (9 moles) butyl ether B-6: Polyoxyethylene (55 moles) Polyoxypropylene (43 moles) trimethylolpropane ether B-7: Polyoxyethylene (15 moles) Polyoxypropylene (10 moles) Alkyl (C16, 18) ether

(ionic surfactant) C-1: Potassium acetate C-2: Polyoxyethylene (3 mol) lauryl ether phosphate potassium salt C-3: Pentadecane sulfonate sodium salt

(volatile diluent) D-1: Ion exchange water D-2: Alkanes with 11 to 13 carbon atoms

Next, ion-exchange water (D-1) was slowly added while stirring the treatment agent (P-1) for intertwined and drawn yarns, so that the treatment agent (P-1) for intertwined and drawn yarns was 45% by mass and the ion-exchange water was added. The mixture was mixed so that the water content was 55% by mass, and a diluted solution of the treatment agent for interwoven drawn yarns of Example 1 was prepared.

(Examples 2 to 15 and Comparative Examples 1 to 4) The diluted solutions of Examples 2 to 15 and Comparative Examples 1 to 4 were prepared by the same method as Example 1 using each component shown in Tables 1 and 2.

It should be noted that the type and proportion of the treatment agent for interlaced drawn yarns and the type and proportion of the volatile diluent in the diluent of each example are shown in the "Treatment agent for interwoven drawn yarns" and "Volatile diluents" in Table 2, respectively. Thinner" column.

Table 2

Test Category 2 (Manufacturing of Interwoven Extension Yarns)

The diluted solution of the treatment agent for interlaced drawn yarns prepared in Test Category 1 was used to produce interlaced drawn yarns.

First, as step 1, polyester fiber is melt-spun. Specifically, fragments of polyethylene terephthalate with an intrinsic viscosity of 0.64 and a titanium oxide content of 0.2% were dried by a conventional method and then melt-spun at 295° C. using a melt extruder (extruder). The melt-spun fibers are solidified by cooling in air.

Next, as step 2, the melt-spun fibers are bundled through a guide, wound up on a first roll heated to 80° C., and pulled at a yarn speed of 1500 m/min. Then, it was wound up on the 2nd roll heated to 130 degreeC, and it was rotated at the yarn speed of 4500m/minute, and it extended 3 times between the 1st roll and the 2nd roll.

Next, as step 3, the diluted solution of the treatment agent for interlaced drawn yarns produced in test category 1 is applied to the drawn yarns by a guided oiling method using a metering pump. Specifically, an oil supply guide device is used as a diluent application device. The oil supply guide device has a guide body in contact with the moving fiber, and a discharge hole (oil supply nozzle) is provided in the guide body. The diluent of this embodiment is discharged from the discharge hole and is configured to adhere to the fibers. In the imparting step, the interlaced drawn yarn is imparted so that the adhesion amount of the treatment agent becomes the target treatment agent adhesion amount (mass %) in Table 2. It should be noted that the above-mentioned oil supply guide device can be replaced by a spinning device that provides a diluent to the drawn yarn at a position after stretching the spun yarn and before winding it up.

In addition, in Comparative Examples 3 and 4, the imparting step was performed before the stretching step instead of performing the imparting step after the stretching step. In addition, in Examples 10 and 11, the imparting step was performed at two stages before and after the stretching step.

Next, as step 4, air is blown from an entanglement nozzle (hereinafter also referred to as an I/L nozzle) to the drawn yarn to which the dilution solution of the treatment agent for intertwined drawn yarn has adhered, and an I/L step is performed. As step 5, the fiber subjected to the I/L step is wound on a winding machine. The obtained intertwined drawn yarn was a polyester fiber of 83.3 dtex (75 denier) with 36 filaments.

The position of the oil supply nozzle, the yarn speed during oil supply, and the target treatment agent adhesion amount in the oil supply conditions of each example are shown in the "Position of the oil supply nozzle" column, the "Wire speed during oil supply" column, and the "Target treatment agent adhesion amount" in Table 2, respectively. ” column.

Test Category 3 (Evaluation)

Regarding the diluted solutions of the treatment agents for interlaced drawn yarns of Examples 1 to 15 and Comparative Examples 1 to 4, their effects on scattering near the I/L nozzle, oil droplets in the oil supply guide, adhesion to the drawn yarns, and adhesion The dyeability of the intertwined drawn yarn of the treatment agent and the energy efficiency in the first roll were evaluated. The procedure of each test is as follows. The test results are shown in the columns of "Scattering in I/L", "Oil Droplets", "Adhesion", "Dyeing", and "Energy Efficiency" in Table 2. In addition, the dynamic viscosity of the diluent was measured using a Cannon-Fenske viscometer at 30° C. by a known method.

(Scattering in I/L) In Step 4 of Test Category 2, the amount of scattering of the diluent near the I/L nozzle was visually observed and evaluated based on the following criteria.

・Evaluation criteria for scattering in I/L ◎(Good): No scattering was confirmed 〇(Normal): Slight scattering is confirmed × (Defect): Considerable scattering was observed

(oil droplets) In Step 3 of Test Category 2, visually observe the frequency at which the diluent supplied from the guide body of the oil supply guide device drips without adhering to the fiber, and evaluate it based on the following criteria in terms of the number of drops per minute. .

・Evaluation criteria for oil droplets ◎(Good): 0 times 〇 (General): 1 to 2 times × (Defect): 3 or more times

(Adhesion) The adhesion amount of the treatment agent for interlaced drawn yarns was measured on the polyester fiber obtained in Step 5 of Test Category 2, and the adhesion according to the target adhesion amount was recorded as 100%, and the evaluation was performed based on the following criteria.

・Evaluation criteria for adhesion ◎(Good): More than 95% 〇(General): More than 85%, less than 95% × (Defect): less than 85%

It should be noted that the adhesion amount of the treatment agent for interlaced drawn yarns was measured by measuring the mass of the drawn yarn per unit length before and after the imparting step, and the adhesion was calculated based on the content ratio of the treatment agent for interlaced drawn yarns in the diluent. quantity.

(stainability) Using the polyester fiber obtained in Step 5 of Test Category 2, use a tubular knitting machine to produce a knitted fabric with a diameter of 70 mm and a length of 1.2 m. The produced knitted fabric is dyed by high-pressure dyeing using disperse dyes. The dyed knitted fabric is subjected to water washing, reduction cleaning and drying according to conventional methods (for example, refer to Japanese Patent Application Laid-Open No. 2015-124443). It is installed in a cylinder made of iron with a diameter of 70 mm and a length of 1 m, and the surface of the knitted fabric is visually observed, and the fraction of the densely dyed part is counted. The same evaluation was performed five times, and the average value of the scores of the heavily dyed portions counted in each time was evaluated based on the following criteria. Round the average to the nearest decimal point. It should be noted that the heavily dyed portions are caused by uneven heating, so the uneven heat history was evaluated through the evaluation of dyeability.

・Evaluation criteria for dyeability ◎(Good): 0 points 〇(General): 1~2 points ×(Defect): 3 points or more

(energy efficiency) The temperature condition of the first roll in step 2 of test category 2 was changed, and the minimum temperature for satisfying "◎" in the evaluation of the dyeability mentioned above was verified. The lower the minimum temperature, the better the energy efficiency is, and evaluation is performed based on the following criteria.

・Evaluation criteria for energy efficiency ◎(Good): When the temperature is below 78℃ 〇(General): When the temperature is greater than 78℃ and below 84℃ ×(Defect): When the temperature exceeds 84℃

According to the results in Table 2, the present invention can suppress scattering and oil droplets in I/L and improve adhesion. Therefore, the treatment agent for intertwined drawn yarns can be efficiently adhered to the drawn yarns. In addition, by suppressing uneven heating, the dyeability can be improved. In addition, the energy efficiency for improving yarn quality is improved.

Claims (10)

A diluent of a treatment agent for interlaced drawn yarns, which contains a treatment agent for interwoven drawn yarns containing a surfactant and a volatile diluent, characterized in that when the treatment agent for interwoven drawn yarns and the aforementioned volatile diluent are included in the diluted liquid, When the total content of the sexual diluent is 100% by mass, the above treatment agent for interlaced drawn yarns is contained in a proportion of 30% by mass or more and 75% by mass or less, and the treatment agent for interlaced drawn yarn is contained in a proportion of 25% by mass or more and 70% by mass or less. Containing the above-mentioned volatile diluent, the above-mentioned surfactant contains an ionic surfactant and a non-ionic surfactant, the above-mentioned ionic surfactant includes selected from fatty acid salts, organic phosphates, organic sulfonates, amphoteric compounds and tetrahydrofurans. At least one of grade ammonium salts, and the above-mentioned nonionic surfactant includes a compound selected from the group consisting of compounds obtained by adding alkylene oxides to alcohols or carboxylic acids, and compounds obtained by adding alkylene oxides to ester compounds of carboxylic acids and alcohols. At least one of an ether-ester compound formed by adding an alkylene oxide to a natural oil and fat, and the above diluent is applied to a spinning device that stretches the spun yarn. The diluent is applied to the yarn at a position before winding. However, it is excluded that the treatment agent for the interlaced drawn yarn contains an epoxy compound having two or more epoxy groups in one molecule. The dilution of the treatment agent for interlaced drawn yarns as described in claim 1, wherein the kinematic viscosity at 30°C is 10 mm ² /s ~ 1000 mm ² /s. The diluted solution of the treatment agent for interwoven and drawn yarns as described in claim 1 or 2, wherein when the above-mentioned treatment agent for interwoven and drawn yarns and the above-mentioned volatile diluent are contained in the diluent, When the total proportion is 100% by mass, the treatment agent for interlaced drawn yarns is contained in a proportion of 35% to 70% by mass, and the volatile diluent is contained in a proportion of 30% to 65% by mass. The dilution of the treatment agent for interlaced drawn yarns according to claim 1 or 2, wherein the volatile diluent contains water. The dilution of the treatment agent for interwoven stretched yarns according to claim 1 or 2, wherein the total content ratio of the above-mentioned nonionic surfactant and the above-mentioned ionic surfactant in the above-mentioned treatment agent for interwoven stretched yarns is set to At 100% by mass, the treatment agent for interlaced drawn yarns contains the nonionic surfactant in a proportion of 80% to 99.9% by mass, and the ionic surfactant in a proportion of 0.1% to 20% by mass. The dilution of the treatment agent for interlaced drawn yarns according to claim 1 or 2, wherein the treatment agent for interwoven drawn yarns further contains a smoothing agent, and the smoothing agent includes an ester selected from the group consisting of aliphatic monoalcohols and aliphatic monocarboxylic acids. Compounds, ester compounds of aliphatic polyols and aliphatic monocarboxylic acids, ester compounds of aliphatic monoalcohols and aliphatic polycarboxylic acids, ester compounds of aromatic monoalcohols and aliphatic monocarboxylic acids, aromatic polyols and fats At least one of ester compounds of aliphatic monocarboxylic acids, ester compounds of aliphatic monoalcohols and aromatic polycarboxylic acids, natural oils and fats, and mineral oil (excluding components used as volatile diluents), when the above interlaced extension When the total content ratio of the above-mentioned smoothing agent, the above-mentioned nonionic surfactant and the above-mentioned ionic surfactant in the silk treatment agent is 100% by mass, the above-mentioned cross-linking agent The treatment agent for weaving and drawing yarns contains the above-mentioned smoothing agent in a proportion of 30 mass % to 80 mass %, the above-mentioned nonionic surfactant in a proportion of 5 mass % to 69.9 mass %, and 0.1 mass % to 20 mass %. The proportion contains the above-mentioned ionic surfactant. A method for producing intertwined drawn yarns, characterized in that a series of spinning and drawing steps include spinning and drawing synthetic fibers, and a winding step of winding the drawn yarns obtained by the spinning and drawing steps. In the yarn drawing and winding step, there is a step of applying a diluent of the treatment agent for interlaced drawn yarns according to any one of claims 1 to 6 to the drawn yarn after the spinning and drawing step and before the winding step. and an interleaving step for performing the interleaving process. The method for producing an interlaced drawn yarn according to claim 7, wherein in the step of imparting, the treatment for the interlaced drawn yarn is given to the drawn yarn in a proportion of 0.1 mass % to 3.0 mass % as a treatment agent for the interlaced drawn yarn. diluent of the agent. The method for producing intertwined drawn yarn according to claim 7 or 8, wherein the adhesion amount of the synthetic fiber treatment agent to the yarn before drawing in the above-mentioned spinning drawing step is less than 0.2 mass %. The method for manufacturing intertwined drawn yarns according to claim 7 or 8, wherein the winding speed of the drawn yarns in the above-mentioned winding step is 3500 m/min or more.