JP6241133B2 - Spun yarn and knitted fabric including the spun yarn - Google Patents

Description

  The present invention relates to a blended yarn comprising a synthetic fiber and a natural fiber having a single fiber fineness in a range of 0.8 to 3.3 dtex, a blended yarn imparted with functionality, and a knitted fabric including the blended yarn.

  Conventionally, as skin-wearing materials, there are spun yarn using only cotton fibers, spun yarn obtained by blending synthetic fibers such as acrylic fibers and cotton fibers, and spun yarn obtained by blending synthetic fibers such as regenerated cellulose fibers and acrylic fibers. When the ratio of cotton fibers to synthetic fiber and cotton fiber blends increases, the feel when gripping the knitted fabric tends to become harder, and the knitted fabric after washing tends to become harder and more fragile. There is. The main use is mainly underwear for men. A blend of regenerated cellulose fiber and synthetic fiber lacks form stability after washing, but is superior in hygroscopic heat generation, glossy, and soft to the touch when grasping a knitted fabric. Tend to be.

  Among them, by paying attention to the hygroscopic exothermic property of the regenerated cellulose fiber from the functional aspect, a fabric having a high hygroscopic exothermic property and a heat retaining effect obtained by blending synthetic fiber and hygroscopic exothermic fiber has been disclosed (Patent Document 1).

  In addition, a proposal has been disclosed that combines a spun yarn containing a cross-linked acrylic fiber and an elastic yarn with high heat absorption and heat retention effect and improved fit to the body when worn (patent document) 2).

JP 2003-227043 A JP 2009-133303 A

  However, the main purpose of the fabric using the hygroscopic exothermic fiber described in Patent Document 1 and the knitted fabric including the cross-linked acrylic fiber described in Patent Document 2 is a device for increasing the hygroscopic exothermic property and the heat retaining effect. Therefore, the feeling when grasping a knitted fabric which is important in apparel use was not satisfied by consumers.

  An object of the present invention is to provide a spun yarn for a knitted fabric that has a soft feel when grasping a knitted fabric and has a soft texture of the knitted fabric even when functionality is imparted.

The spun yarn of the present invention has an acrylic fiber having a single fiber fineness of 0.8 to 3.3 dtex, a cotton fiber having a single fiber fineness of 0.8 to 1.2 dtex, and a single fiber fineness of 0.8 to 1 It is a spun yarn composed of regenerated cellulose fibers of .2 dtex, and the spun yarn satisfies the following (1) to (3) in the mixing ratio of each fiber in the spun yarn.
(1) Mixing ratio of acrylic fiber is 40-60% by mass
(2) Cotton fiber mixing ratio of 20-30% by mass
(3) The mixing ratio of the regenerated cellulose fiber is 20 to 30% by mass.

The spun yarn of the present invention is a low-shrinkage acrylic fiber (A) in which a part or all of the acrylic fiber is a low-shrinkage acrylic fiber (A) having a single fiber fineness of 0.8 to 1.3 dtex and a boiling water shrinkage of 5% or less. It is preferable that the mixing ratio of each fiber in the yarn satisfies the following (4) to (6).
(4) The mixing ratio of the low shrinkage acrylic fiber (A) is 40 to 60% by mass.
(5) Cotton fiber mixing ratio of 20-30% by mass
(6) The mixing ratio of the regenerated cellulose fiber is 20 to 30% by mass.

In the spun yarn of the present invention, a part or all of the acrylic fiber is a high-shrinkage acrylic fiber (B) having a low-shrinkage acrylic fiber single fiber fineness of 0.8 to 1.3 dtex and a boiling water shrinkage of 15% to 45%. And it is preferable that the mixture ratio of each fiber in a spun yarn satisfies the following (7)-(10).
(7) The mixing ratio of the highly shrinkable acrylic fiber (B) is 30 to 50% by mass.
(8) The total mixing ratio of the low-shrinkage acrylic fiber (A) and the high-shrinkage acrylic fiber (B) is 40 to 60% by mass.
(9) Cotton fiber mixing ratio of 20-30% by mass
(10) Mixing ratio of regenerated cellulose fiber is 20 to 30% by mass

In the spun yarn of the present invention, part or all of the acrylic fiber is a low-shrinkage acrylic fiber (A) and a conductive acrylic fiber (C) having a single fiber fineness of 1.7 to 3.3 dtex, It is preferable that the mixing ratio of each fiber in the spun yarn satisfies the following (11) to (14).
(11) Mixing ratio of conductive acrylic fiber (C) is 3 to 10% by mass
(12) The total mixing ratio of the low-shrinkage acrylic fiber (A) and the conductive acrylic fiber (C) is 40 to 60% by mass.
(13) Cotton fiber mixing ratio of 20 to 30% by mass
(14) Mixing ratio of regenerated cellulose fiber is 20 to 30% by mass

In the spun yarn of the present invention, a part or all of the acrylic fiber is a low shrinkage acrylic fiber (A) and a deodorant acrylic fiber (D) having a single fiber fineness of 1.0 to 2.2 dtex. It is preferable that the mixing ratio of each fiber in the spun yarn satisfies the following (15) to (18).
(15) The mixing ratio of the deodorant acrylic fiber (D) is 20 to 40% by mass.
(16) The total mixing ratio of the low-shrinkage acrylic fiber (A) and the deodorant acrylic fiber (D) is 40 to 60% by mass.
(17) Cotton fiber mixing ratio of 20 to 30% by mass
(18) The mixing ratio of the regenerated cellulose fiber is 20 to 30% by mass.

In the spun yarn of the present invention, part or all of the acrylic fiber is a low-shrinkage acrylic fiber (A), a high-shrinkage acrylic fiber (B), and a conductive acrylic fiber (C), and each of the spun yarns It is preferable that the fiber mixing ratio satisfies the following (19) to (23).
(19) The mixing ratio of the highly shrinkable acrylic fiber (B) is 30 to 50% by mass.
(20) Mixing ratio of conductive acrylic fiber (C) is 3 to 10% by mass
(21) The total mixing ratio of the low-shrinkage acrylic fiber (A), the high-shrinkage acrylic fiber (B), and the conductive acrylic fiber (C) is 40 to 60% by mass.
(22) Cotton fiber mixing ratio of 20-30% by mass
(23) The mixing ratio of the regenerated cellulose fiber is 20 to 30% by mass.

In the spun yarn of the present invention, part or all of the acrylic fiber is a low-shrinkage acrylic fiber (A), a high-shrinkage acrylic fiber (B), and a deodorant acrylic fiber (D), It is preferable that the mixing ratio of each fiber satisfies the following (24) to (28).
(24) The mixing ratio of the highly shrinkable acrylic fiber (B) is 25 to 35% by mass.
(25) The mixing ratio of the deodorant acrylic fiber (D) is 25 to 35% by mass.
(26) The total mixing ratio of the low-shrinkage acrylic fiber (A), the high-shrinkage acrylic fiber (B), and the deodorant acrylic fiber (D) is 40 to 60% by mass.
(27) Cotton fiber mixing ratio of 20 to 30% by mass
(28) Mixing ratio of regenerated cellulose fiber is 20 to 30% by mass

  The knitted fabric of the present invention is a knitted fabric containing these spun yarns.

  By using the spun yarn of the present invention, it is possible to obtain a knitted fabric having a soft feel when grasping a knitted fabric, and to obtain a knitted fabric having a soft feel when grasping a knitted fabric even if functionality is added. Can do.

It is the schematic of the apparatus which measures the light heating performance of a knitted fabric.

Details of the present invention will be described below.
(Acrylonitrile polymer)
The raw material of the acrylic fiber used for the spun yarn of the present invention is not particularly limited as long as it is an acrylonitrile polymer used for production of a normal acrylic fiber. The composition of the polymer needs to contain 50% by mass or more of acrylonitrile units. Thereby, the original characteristic of acrylic fiber can be expressed.

The monomer copolymerized with acrylonitrile is not particularly limited as long as it can be copolymerized. For example, methyl acrylate, ethyl acrylate, isopropyl acrylate, n-butyl acrylate, 2-ethylhexyl acrylate, 2-acrylic acid 2- Acrylic acid esters typified by hydroxyethyl, methacrylic acid esters typified by methyl methacrylate, ethyl methacrylate, isopropyl methacrylate, acrylic acid, methacrylic acid, maleic acid, itaconic acid, acrylamide, styrene, Examples thereof include vinyl toluene, vinyl acetate, vinyl chloride, vinylidene chloride, vinyl bromide, vinylidene bromide, vinyl fluoride, and vinylidene fluoride.
Also, copolymerization of p-sulfophenyl methallyl ether, methallyl sulfonic acid, allyl sulfonic acid, styrene sulfonic acid, 2-acrylamido-2methylpropane sulfonic acid, and alkali salts thereof is for improving dyeability. Is preferable.

(Acrylic fiber)
An acrylic fiber suitable for the spun yarn of the present invention can be obtained, for example, as follows. A copolymer comprising 93% by mass of acrylonitrile and 7% by mass of vinyl acetate is obtained by an aqueous suspension polymerization method. Subsequently, the copolymer is dissolved in dimethylacetamide to obtain a spinning dope having a polymer concentration of 20% by mass. The spinning dope is wet-spun in a coagulation bath of 30-60 mass% solvent, 70-40 mass% water, and 30-50 ° C. temperature using a nozzle die having a round discharge hole. The number of discharge holes is not specified. After spinning, the film is stretched at a stretch ratio of 3 to 5 times with wet heat, and then an oil agent is attached, dried and densified with a heat roller at 150 ° C., and further stretched at a stretch ratio of 1.1 to 2 with dry heat. Then, if necessary, heat shrink treatment is performed under pressurized steam. The acrylic fiber thus obtained is preferably an acrylic fiber having a single fiber fineness in the range of 0.8 to 1.3 dtex. If the single fiber fineness is 0.8 dtex or more, troubles in the spinning process are unlikely to occur, and the single fiber fineness is 1.3 dtex or less, and the feel when grasping the knitted fabric is soft From the viewpoint, the single fiber fineness is more preferably in the range of 0.9 to 1.2 dtex.

(High shrinkage acrylic fiber)
The highly shrinkable acrylic fiber used in the spun yarn of the present invention is preferably an acrylic fiber having a boiling water shrinkage of 15% to 45% and a single fiber fineness in the range of 0.8 to 1.3 dtex. If the boiling water shrinkage is 15% or more, the knitted fabric is excellent. If the boiling water shrinkage is 45% or less, the texture of the knitted fabric after shrinkage does not become too hard and the feel when gripping the knitted fabric is soft. It will be a thing. From the above viewpoint, the boiling water shrinkage is more preferably in the range of 18% to 40%.

  In addition, if the single fiber fineness is 0.8 dtex or more, troubles in the spinning process are unlikely to occur, and if the single fiber fineness is 1.3 dtex or less, the feeling when gripping the knitted fabric is obtained without shrinking. From the viewpoint of being soft, the single fiber fineness is more preferably in the range of 0.9 to 1.2 dtex.

  High shrinkage acrylic fibers having a boiling water shrinkage of 15% to 45% can be produced by appropriately combining known techniques such as high shrinkage raw cotton and a check sliver in tow spinning. By combining high-shrinkage acrylic fibers and low-shrinkage fibers into a blended yarn and then giving a bulky property by heat treatment in the dyeing process, a knitted fabric excellent in lightness with swelling can be obtained. Furthermore, while increasing the space | gap between the fibers which comprise a spun yarn, the heat insulation improvement effect by improving the heat-shielding property by an air layer is also acquired.

  The mixing ratio in the spun yarn of the highly shrinkable acrylic fiber is preferably 25 to 50% by mass. If the mixing ratio in the spun yarn of the high shrinkage acrylic fiber is 25% by mass or more, shrinkage spots are hardly generated during the heat treatment, and the quality of the knitted fabric is not impaired. Moreover, if the mixture ratio in the spun yarn of highly shrinkable acrylic fibers is 50% by mass or less, the feel when grasping the knitted fabric is soft without being shrunk. From the above viewpoint, the mixing ratio in the spun yarn of the highly shrinkable acrylic fiber is more preferably in the range of 30 to 40% by mass.

(Conductive acrylic fiber)
When conductive acrylic fiber is included as the acrylic fiber, antistatic performance can be imparted to the spun yarn. The conductive acrylic fiber can be obtained by mixing a conductive substance with the acrylic fiber. The conductive material mixed with the acrylic fiber is not particularly limited, but metals represented by Fe, Cu, Al, Pb, Sn, Au, Ag, Ni, etc., and oxides, sulfides, and carbonyls thereof. It was coated on carrier fine particles of salt or conductive metal oxides such as ITO (indium tin oxide), ATO (antimony tin oxide), zinc oxide, and barium sulfate, titanium oxide, potassium titanate, and aluminum. Non-metallic conductive material, furnace, channel, thermal, carbon black conductive material typified by acetylene black, and conductive polymer compound typified by polyacetylene, polypyrrole, polyaniline, tetracyanoparaquinodimethane (TCNQ) , Organic conductors represented by complexes with tetrathiafulvalene (TTF) Sexual compounds.

  As a means for mixing these conductive substances, a kneaded fiber in which a conductive substance is uniformly dispersed and mixed in a spinning stock solution at the time of acrylic fiber production may be used, but considering the spinning stability, durability, and conductive performance, A method by core-sheath type composite spinning in which a conductive substance is kneaded is preferable.

  As another function of the conductive acrylic fiber, if conductive acrylic fiber having a function of converting light energy into heat energy (light absorption heat generation) is used, not only the antistatic performance but also the heat generation function of the spun yarn It is possible to give, and it is more preferable.

  The mixing ratio in the spun yarn of the conductive acrylic fiber is preferably 3 to 10% by mass. If the mixing ratio of the conductive acrylic fiber in the spun yarn is 3% by mass or more, the antistatic performance can be imparted to the knitted fabric. Moreover, if the mixing rate in the spun yarn of the conductive acrylic fiber is 10% by mass or less, it is possible to prevent deterioration in knitted fabric quality and dyeability due to coloring derived from the conductive acrylic fiber. In addition, when using the conductive acrylic fiber which has light absorption exothermic property, it is preferable that the mixture rate in a spun yarn shall be 5-10 mass%. If the mixing ratio of the light absorption heat generation / conductive acrylic fiber in the spun yarn is 5% or more, it is possible to impart light absorption heat generation performance to the knitted fabric. It is possible to prevent deterioration in the quality of the fabric and dyeability. From the above viewpoint, the mixing ratio in the spun yarn of the conductive acrylic fiber is more preferably in the range of 5 to 10% by mass.

  Moreover, it is preferable that the single fiber fineness of a conductive acrylic fiber exists in the range of 1.7-3.3 dtex. If the single fiber fineness is 1.7 dtex or more, troubles such as yarn breakage and winding at the time of spinning the conductive acrylic fiber are less likely to occur, and it is preferable in industrial production without impairing the spinning stability. Moreover, if the single fiber fineness is 3.3 dtex or less, there is little influence on it, and the touch when the knitted fabric is gripped becomes soft.

(Deodorant acrylic fiber)
When the deodorizing acrylic fiber is included as the acrylic fiber, the deodorized performance can be imparted to the spun yarn. The deodorant acrylic fiber is obtained by mixing a deodorant with the acrylic fiber. Although it does not specifically limit as a deodorizer mixed with an acrylic fiber, Metal oxides, such as Ti, Zn, AI, Sn, Si, Fe, Ca, Mg, Ba, Zr, these metals and / or metal oxidation Fine powders mainly composed of inorganic compounds including substances, fine particles of solid acid hardly soluble in water, and the like can be used.

  The mixing ratio in the spun yarn of the deodorant acrylic fiber is preferably 20 to 40% by mass. If the mixing ratio in the spun yarn of the deodorant acrylic fiber is 20% by mass or more, deodorant performance can be imparted to the knitted fabric. Moreover, if the mixing rate in the spun yarn of a deodorant acrylic fiber is 40 mass% or less, the fall of the dyeability derived from a deodorant acrylic fiber and the fall of yarn strength can be prevented. From the said viewpoint, it is more preferable that the mixing rate in the spun yarn of deodorant acrylic fiber exists in the range of 25-35 mass%.

  Moreover, it is preferable that the single fiber fineness of a deodorant acrylic fiber exists in the range of 1.0-2.2 dtex. If the single fiber fineness is 1.0 dtex or more, troubles in the spinning process are unlikely to occur. Moreover, if the single fiber fineness is 2.2 dtex or less, the feel when gripping the knitted fabric will be soft. From the above viewpoint, the single fiber fineness is more preferably in the range of 1.0 to 1.7 dtex.

(Cotton fiber)
By adding cotton fibers, it is possible to impart moisture absorption exothermic properties and moderate tension and elasticity to the spun yarn and the knitted fabric using the same. The mixing ratio in the spun yarn of cotton fibers is preferably 20 to 30% by mass. If the blending ratio in the spun yarn of cotton fibers is 20% by mass or more, it is possible to impart a moderate tension and feeling to the touch when grasping the knitted fabric. Moreover, if the mixture ratio in the spun yarn of cotton fiber is 30 mass% or less, the texture hardening of the knitted fabric can be prevented.

(Regenerated cellulose fiber)
By adding the regenerated cellulose fiber, it is possible to obtain a knitted fabric that is soft to the touch when grasping the knitted fabric and has a good texture as a clothing application. In addition, it is possible to add a feeling of contact cooling to the knitted fabric and to give a glossy feeling. Examples of the regenerated cellulose fibers include viscose rayon fibers obtained by the viscose method, polynosic fibers, modal fibers and cupra fibers obtained by the copper ammonia method, tencel fibers obtained by the solvent spinning method, and lyocell fibers. When the mixing ratio of the regenerated cellulose fibers in the spun yarn is 20% by mass or more, it is possible to obtain a knitted fabric having a soft feel and a good texture when gripping the knitted fabric. Moreover, a cool feeling and a glossy feeling can be provided. When the mixing ratio of the regenerated cellulose fiber in the spun yarn is 30% by mass or less, the texture of the knitted fabric does not become too soft, and an appropriate tension feeling can be maintained.

(Spun yarn)
The spun yarn of the present invention comprises an acrylic fiber having a single fiber fineness of 0.8 to 3.3 dtex, a cotton fiber having a single fiber fineness of 0.8 to 1.2 dtex, and a single fiber fineness of 0.8 to 1.2 dtex. It is necessary that the spun yarn is composed of regenerated cellulose fibers. Since the single fiber fineness of each fiber is the same, the single fiber of each fiber is more easily mixed in the spinning process.
Moreover, the mixing ratio of each fiber in the spun yarn satisfies the following (1) to (3).
(1) Mixing ratio of acrylic fiber is 40-60% by mass
(2) Cotton fiber mixing ratio of 20-30% by mass
(3) The mixing ratio of the regenerated cellulose fiber is 20 to 30% by mass.

  When the mixture ratio of acrylic fibers having a single fiber fineness of 0.8 to 3.3 dtex is in the range of 60 to 40% by mass, a soft feel is obtained when the knitted fabric is gripped, and the knitted fabric is kept warm. Can give sex. Further, the mixing ratio of the cotton fibers having a single fiber fineness of 0.8 to 1.2 dtex is in the range of 20 to 30% by mass, so that the knitted fabric using the spun yarn has hygroscopic heat generation property and moderate tension. A feeling can be given. Furthermore, when the mixing ratio of the regenerated cellulose fiber having a single fiber fineness of 0.8 to 1.2 dtex is in the range of 20 to 30% by mass, the knitted fabric of the spun yarn has a feeling of cooling and gloss. I can do it.

(Method for producing spun yarn)
The production of the spun yarn of the present invention uses equipment used for cotton spinning. Each fiber is weighed so that it becomes the raw material ratio of the spun yarn, and then put into a cotton spreader and mixed. After the mixed raw materials are put into a cotton blower, a wrap is formed. Next, put the lap into the flat card and create a sliver. In this case, it is desirable that the number of flat cards used is 70 or more, preferably 100 or more. In order to improve the quality, it is desirable to use a machine base equipped with a fixed flat. After the sliver is created, the roving process is performed twice or more, and then the roving process is performed to create the roving yarn. In this case, the setting of the number of twists of the roving is 20 times / inch. If the number of twists of the roving yarn is too high, it will cause an abnormal draft in fine spinning, resulting in an increase in spatter yarn spots and a reduction in quality. A spun yarn is produced from the obtained roving yarn with a ring spinning machine. In the winder process, the spun yarn preferably has a metric count of 64 to 90. After removing defects in the spun yarn, it is wound around a cone.

(Method of setting the number of twists in the spinning process)
For spun yarn used for knitting, the number of twists is important to soften the feel when grasping the knitted fabric and to reduce fluff, and the twist coefficient (α) should be set between 105 and 110 Is preferred. The number of twists is determined by the following formula.
Number of twists (times / m) = twisting coefficient (α) × √spun yarn count (metric count)

If the twist coefficient is 105 or more, the yarn strength necessary for knitting the knitted fabric can be maintained. Moreover, if a twist coefficient is 110 or less, it can prevent that the texture when grasping a knitted fabric becomes too hard.
The spun yarn is subjected to steam setting at a temperature of 60 ° C. for 15 minutes or a temperature of 80 ° C. for 7 minutes in order to suppress the expression of twisting torque.

(Knitting fabric creation method)
In the knitting process, knitting is performed using a known circular knitting machine. The type of the knitting machine is not particularly limited, and may be appropriately selected to obtain a desired knitted fabric structure such as a single knitting machine, a double knitting machine, or a pile knitting machine. At the time of knitting, the running tension of the yarn is in the range of 10 to 25 g. If this range is exceeded, the amount of fly generated due to the contact between the spun yarn and the yarn guide of the knitting machine increases, which causes a decrease in knitted fabric quality due to perforations and the like due to increased yarn breakage and jumping of fluff.

(Dyeing method)
A liquid flow dyeing machine may be used for dyeing the knitted fabric. For example, the dyeing step is a step of keeping the state for 20 minutes after setting the temperature of the dyeing solution at 45 ° C. to 100 ° C. under a temperature rising condition of 1 ° C./2 minutes. At this time, it is suitable to improve the quality to use a type in which the liquid flow is down blow. By down-blowing the liquid flow, no extra tension is applied to the knitted fabric, and the feel when gripping the knitted fabric can be softened.
Hereinafter, the present invention will be described more specifically with reference to examples. Each evaluation item was measured by the following method.

(Twist number measurement method)
The number of twists of the spun yarn is the average value of the values measured 30 times using the method defined in JIS L 1095: 1999 “Number by A9.15.1 A”. The tester used was measured using a manual tester made by Maeda Kikai.

(Texture evaluation of knitted fabric)
The feel evaluation when the knitted fabric was grasped was a sensory test, and the evaluation was decided by a consensus of five engineers. The evaluation method was classified as follows according to the number of persons who answered that all the knitted fabrics created in the examples and comparative examples were compared and evaluated as having good texture.
○: Good (out of 5 evaluators, 4 to 5 responded that the texture was good)
Δ: Normal (out of 5 evaluators, 2 to 3 responded that the texture was good)
X: Inferior (out of 5 evaluators, 0 to 1 responded that the texture was good)

(Fineness measurement method)
The fineness of each fiber was measured using the method defined in JIS L 1015: 2002 “8.5.1 Positive Fineness A Method”.

(Heat insulation performance of knitted fabric)
The heat retention performance of the knitted fabric was measured by JIS L 1096 heat retention A method (constant temperature method).

(Antistatic performance of knitted fabric)
The antistatic performance of the knitted fabric was measured by the JIS L 1094 friction withstand voltage measurement method.

(Light heating performance of knitted fabric)
As shown in FIG. 1, a thermocouple is inserted between two stacked samples, and when the reflex lamp is irradiated for 20 minutes under the following conditions, the maximum temperature difference between the test sample and the comparative sample is measured, and the photothermal performance It was.
Use lamp: Iwasaki Electric Co., Ltd. eye lamp <spot> PRS100V500W
Irradiation distance: 50cm
Irradiation surface: Front side Irradiation time: 20 minutes Laboratory temperature: 20 ± 2 ° C

(Deodorizing performance of knitted fabric)
The deodorization performance of the knitted fabric was measured by the instrumental analysis test method specified by the Deodorization Mark Certification Standard of the Japan Textile Evaluation Technology Council, ammonia and acetic acid were measured by the detector tube method, and isovaleric acid and nonenal by the gas chromatographic method. .

Example 1
After obtaining a copolymer consisting of 93% by mass of acrylonitrile and 7% by mass of vinyl acetate by an aqueous suspension polymerization method, the copolymer is subsequently dissolved in dimethylacetamide, and a spinning stock solution having a copolymer concentration of 20% by mass is obtained. Obtained. The spinning dope was discharged into a coagulation bath, which was an aqueous solution having a dimethylacetamide concentration of 60 mass% and a temperature of 40 ° C., using a nozzle having a round discharge hole. As the nozzle, a nozzle having a discharge hole diameter of 0.008 mm and a discharge hole number of 15000 was used. Subsequently, the solvent was washed in boiling water and then stretched 5 times in boiling water. Subsequently, an oil agent is attached, dried with a heat roller at 150 ° C., cut into a fiber length of 38 mm, and the cross-sectional shape is an empty bean-like acrylic fiber (single fiber fineness 1 dtex, fiber length 38 mm, boiling water shrinkage 0 to 2%, Mitsubishi Rayon Manufactured by Co., Ltd., product name: Bonnell H616).

Next, 20% by mass of cotton fiber having a fineness of 1 dtex, 20% by mass of modal fiber having a fineness of 1 dtex, and 60% by mass of the acrylic fiber were mixed. A spun yarn was prepared through a spinning process of mixed cotton fiber, modal fiber and acrylic fiber. Details from blended cotton to spinning are as follows.
In the blending method, each fiber was weighed after blending so that the design ratio was achieved. After that, it was put into a cotton blower and a lap was created. I put the lap into the flat card and created a sliver. At this time, the top number of flat cards used was 106. After creating the sliver, the drawing process was passed twice, and then the roving process was performed to prepare a roving yarn. The setting of the number of twists of the roving yarn at this time was 20 times / inch. Next, the roving was passed through a ring spinning machine to produce a spun yarn having a metric count of 68 and a twist number of 870 times / m. Next, after removing defects of the spun yarn in a winder process, it was wound around a cone.

  A knitted fabric was prepared from the obtained spun yarn using a 28 gauge 60-port circular knitting machine. Thereafter, the knitted fabric was dyed with a liquid dyeing machine. The texture evaluation when holding the knitted fabric after dyeing was performed as described above. Table 1 shows the composition of the spun yarn, and Table 2 shows the evaluation results of the knitted fabric.

(Example 2)
25% by mass of the acrylic fiber of Example 1 (single fiber fineness 1 dtex, fiber length 38 mm, boiling water shrinkage 0-2%) as the acrylic fiber, single fiber fineness 0.8 dtex, fiber length 38 mm, boiling water shrinkage 20% A spun yarn with a metric count of 68 was obtained in the same manner as in Example 1, except that the high shrinkage acrylic fiber (Mitsubishi Rayon Co., Ltd., product name: Bonnell H129) was 35 mass%. A knitted fabric was prepared from the obtained spun yarn using a 22 gauge 60-port circular knitting machine, and dyeing was performed in the same manner as in Example 1. Texture evaluation and heat retention measurement were performed when holding the knitted fabric after dyeing. Table 1 shows the composition of the spun yarn, and Table 2 shows the evaluation results of the knitted fabric.

(Example 3)
It is carried out in the same manner as in Example 2 except that a knitted fabric is produced with a 14-gauge circular knitting machine using a spun yarn with a metric count of 100 and a twist number of 1060 times / m. Measurements were made. Table 1 shows the composition of the spun yarn, and Table 2 shows the evaluation results of the knitted fabric.

Example 4
20% by mass of the acrylic fiber of Example 1 (single fiber fineness 1 dtex, fiber length 38 mm, boiling water shrinkage 0-2%) as the acrylic fiber, single fiber fineness 1.3 dtex, fiber length 38 mm, boiling water shrinkage 40% A spun yarn having a metric count of 80 and a twist number of 950 times / m was obtained in the same manner as in Example 2 except that the amount of highly shrinkable acrylic fiber (manufactured by Mitsubishi Rayon Co., Ltd., product name: Bonnell V85) was 40% by mass. A knitted fabric is prepared from the obtained spun yarn using a circular knitting machine with 14 gauges and 60 ports, dyeing is performed in the same manner as in Example 2, and texture evaluation and heat retention measurement when the knitted fabric is dyed are dyed. Went. Table 1 shows the composition of the spun yarn, and Table 2 shows the evaluation results of the knitted fabric.

(Example 5)
57% by mass of the acrylic fiber of Example 1 (single fiber fineness 1 dtex, fiber length 38 mm, boiling water shrinkage 0-2%) as the acrylic fiber, single fiber fineness 2.2 dtex, fiber length 38 mm, boiling water shrinkage 0-2 %, With a metric count of 80 and a spun yarn of 950 turns / m, in the same manner as in Example 1 except that 3% by mass of conductive acrylic fiber (product of Mitsubishi Rayon Co., Ltd., product name: Corebrid ELECILL) was changed to 3% by mass. Got.
A knitted fabric is prepared from the obtained spun yarn using a 28-gauge 60-port circular knitting machine, dyeing is performed in the same manner as in Example 1, and texture evaluation and antistatic properties when the knitted fabric is held after dyeing. Measurements were performed. Table 1 shows the composition of the spun yarn, and Table 2 shows the evaluation results of the knitted fabric.

(Example 6)
As acrylic fiber, 50% by mass of acrylic fiber (product name: H616, manufactured by Mitsubishi Rayon Co., Ltd.) having a single fiber fineness of 0.8 dtex, a fiber length of 38 mm, and a boiling water shrinkage of 0 to 2%, a single fiber fineness of 3.3 dtex, fiber Except that the conductive acrylic fiber with a length of 38 mm and a boiling water shrinkage of 0 to 2% (Mitsubishi Rayon Co., Ltd., product name: Corebrid Thermo Catch) was changed to 10% by mass, the same as in Example 5, the metric number was 68. A spun yarn having a twist number of 870 times / m was obtained.
A knitted fabric is prepared from the obtained spun yarn using a 28 gauge 60-port circular knitting machine, dyeing is performed in the same manner as in Example 5, and texture evaluation and antistatic properties when the knitted fabric is held after dyeing. Then, photogenicity was measured. In addition, the knitted fabric obtained in Example 1 was used as a comparative fabric for the photo-exothermic test. Table 1 shows the composition of the spun yarn, and Table 2 shows the evaluation results of the knitted fabric.

(Example 7)
30% by mass acrylic fiber (product name: H616, manufactured by Mitsubishi Rayon Co., Ltd.) having a single fiber fineness of 1 dtex, a fiber length of 38 mm, and a boiling water shrinkage of 0 to 2% as an acrylic fiber, a single fiber fineness of 1.7 dtex, and a fiber length of 38 mm 30% by mass of deodorant fiber (product name: Cutley, manufactured by Mitsubishi Rayon Co., Ltd.) having a boiling water shrinkage of 0 to 2%, viscose rayon fiber (single fiber fineness 1.2 dtex, cut) as regenerated cellulose fiber A spun yarn having a metric count of 68 and a twist number of 870 times / m was obtained in the same manner as in Example 5 except that the length was 38 mm).
A knitted fabric was prepared from the obtained spun yarn using a 28-gauge 60-port circular knitting machine, dyeing was carried out in the same manner as in Example 5, and the texture evaluation and deodorizing properties were obtained when the knitted fabric after the dyeing was gripped. Measurements were performed. Table 1 shows the composition of the spun yarn, and Table 2 shows the evaluation results of the knitted fabric.

(Comparative Example 1)
Except for blending 40% by mass of cotton fiber having a fineness of 1 dtex and 60% by mass of acrylic fiber obtained by the production method of Example 1, the number of meters was 68, and the number of twists was 870 times / m. Of spun yarn.
The obtained spun yarn was knitted using a 28-gauge 60-port circular knitting machine, dyeing was performed in the same manner as in Example 1, and texture evaluation and heat retention when holding the knitted fabric after dyeing, Antistatic and deodorizing properties were measured. Table 1 shows the composition of the spun yarn, and Table 2 shows the evaluation results of the knitted fabric.

(Comparative Example 2)
Except for blending 40% by mass of viscose rayon fiber having a fineness of 1.2 dtex and 60% by mass of acrylic fiber obtained by the production method of Example 1, the metric number is 80 and the twist number is the same as in Example 1. A spun yarn of 950 times / m was obtained.
A knitted fabric is prepared from the obtained spun yarn using a 24-gauge 60-port circular knitting machine, dyeing is performed in the same manner as in Example 1, and texture evaluation and antistatic properties when the knitted fabric is held after dyeing. Measurements were performed. Table 1 shows the composition of the spun yarn, and Table 2 shows the evaluation results of the knitted fabric.

(Comparative Example 3)
Except for blending 40% by mass of modal fiber having a fineness of 1 dtex and 60% by mass of cotton fiber having a fineness of 1 dtex, a spun yarn having a metric count of 80 and a twist number of 950 times / m was obtained in the same manner as in Example 1. .
A knitted fabric was prepared from the obtained spun yarn using a 24 gauge 60-port circular knitting machine, dyeing was performed in the same manner as in Example 1, and texture evaluation was performed when the knitted fabric was dyed. Table 1 shows the composition of the spun yarn, and Table 2 shows the evaluation results of the knitted fabric.

(Comparative Example 4)
Example 1 except that 40% by mass of cotton fiber having a fineness of 1 dtex, 40% by mass of viscose rayon fiber having a fineness of 1 dtex and 20% by mass of acrylic fiber obtained by the production method of Example 1 were mixed. Thus, a spun yarn having a metric count of 68 and a twist number of 870 times / m was obtained.
A knitted fabric was prepared from the obtained spun yarn using a 28 gauge 60-port circular knitting machine, dyeing was performed in the same manner as in Example 1, and texture evaluation was performed when the knitted fabric after dyeing was gripped. Table 1 shows the composition of the spun yarn, and Table 2 shows the evaluation results of the knitted fabric.

Claims (8)

Acrylic fibers having a single fiber fineness of 0.8 to 3.3 dtex, cotton fibers having a single fiber fineness of 0.8 to 1.2 dtex, and regenerated cellulose fibers having a single fiber fineness of 0.8 to 1.2 dtex A spun yarn in which the blend ratio of each fiber in the spun yarn satisfies the following (1) to (3), and the metric number is 64 to 90 .
(1) Mixing ratio of acrylic fiber is 40-60% by mass
(2) Cotton fiber mixing ratio of 20-30% by mass
(3) The mixing ratio of the regenerated cellulose fiber is 20 to 30% by mass. The acrylic fiber according to claim 1 is a low-shrinkage acrylic fiber (A) having a single fiber fineness of 0.8 to 1.3 dtex and a boiling water shrinkage of 5% or less, and a mixing ratio of each fiber in the spun yarn. The spun yarn according to claim 1, which satisfies the following (4) to (6).
(4) The mixing ratio of the low shrinkage acrylic fiber (A) is 40 to 60% by mass.
(5) Cotton fiber mixing ratio of 20-30% by mass
(6) The mixing ratio of the regenerated cellulose fiber is 20 to 30% by mass. A part or all of the acrylic fiber according to claim 1 or 2 is a high shrinkage acrylic fiber (B) having a single fiber fineness of 0.8 to 1.3 dtex and a boiling water shrinkage of 15% to 45%, and spinning. The spun yarn according to claim 1 or 2, wherein a mixing ratio of each fiber in the yarn satisfies the following (7) to (10).
(7) The mixing ratio of the highly shrinkable acrylic fiber (B) is 30 to 50% by mass.
(8) The total mixing ratio of the low-shrinkage acrylic fiber (A) and the high-shrinkage acrylic fiber (B) is 40 to 60% by mass.
(9) Cotton fiber mixing ratio of 20-30% by mass
(10) Mixing ratio of regenerated cellulose fiber is 20 to 30% by mass A part or all of the acrylic fiber according to claim 1 or 2 is a low-shrinkage acrylic fiber (A) and a conductive acrylic fiber (C) having a single fiber fineness of 1.7 to 3.3 dtex, The spun yarn according to claim 1 or 2, wherein a mixing ratio of each fiber in the spun yarn satisfies the following (11) to (14).
(11) Mixing ratio of conductive acrylic fiber (C) is 3 to 10% by mass
(12) The total mixing ratio of the low-shrinkage acrylic fiber (A) and the conductive acrylic fiber (C) is 40 to 60% by mass.
(13) Cotton fiber mixing ratio of 20 to 30% by mass
(14) Mixing ratio of regenerated cellulose fiber is 20 to 30% by mass A part or all of the acrylic fiber according to claim 1 or 2 is a low-shrinkage acrylic fiber (A) and a deodorant acrylic fiber (D) having a single fiber fineness of 1.0 to 2.2 dtex. The spun yarn according to claim 1 or 2, wherein a mixing ratio of each fiber in the spun yarn satisfies the following (15) to (18).
(15) The mixing ratio of the deodorant acrylic fiber (D) is 20 to 40% by mass.
(16) The total mixing ratio of the low-shrinkage acrylic fiber (A) and the deodorant acrylic fiber (D) is 40 to 60% by mass.
(17) Cotton fiber mixing ratio of 20 to 30% by mass
(18) The mixing ratio of the regenerated cellulose fiber is 20 to 30% by mass. A part or all of the acrylic fiber according to claim 1 or 2 is a low-shrinkage acrylic fiber (A), a high-shrinkage acrylic fiber (B), and a conductive acrylic fiber (C), and each of the spun yarns The spun yarn according to any one of claims 1 to 3, wherein a mixing ratio of the fibers satisfies the following (19) to (23).
(19) The mixing ratio of the highly shrinkable acrylic fiber (B) is 30 to 50% by mass.
(20) Mixing ratio of conductive acrylic fiber (C) is 3 to 10% by mass
(21) The total mixing ratio of the low-shrinkage acrylic fiber (A), the high-shrinkage acrylic fiber (B), and the conductive acrylic fiber (C) is 40 to 60% by mass.
(22) Cotton fiber mixing ratio of 20-30% by mass
(23) The mixing ratio of the regenerated cellulose fiber is 20 to 30% by mass. A part or all of the acrylic fiber according to claim 1 or 2 is a low-shrinkage acrylic fiber (A), a high-shrinkage acrylic fiber (B), and a deodorant acrylic fiber (D), A spun yarn in which the mixing ratio of each fiber satisfies the following (24) to (28).
(24) The mixing ratio of the highly shrinkable acrylic fiber (B) is 25 to 35% by mass.
(25) The mixing ratio of the deodorant acrylic fiber (D) is 25 to 35% by mass.
(26) The total mixing ratio of the low-shrinkage acrylic fiber (A), the high-shrinkage acrylic fiber (B), and the deodorant acrylic fiber (D) is 40 to 60% by mass.
(27) Cotton fiber mixing ratio of 20 to 30% by mass
(28) Mixing ratio of regenerated cellulose fiber is 20 to 30% by mass   A knitted fabric comprising the spun yarn according to any one of claims 1 to 7.