JP5887235B2 - Knitted fabric with excellent cooling feeling - Google Patents

Description

  The present invention relates to a knitted fabric excellent in comfort and having excellent contact cooling feeling, breathability and surface gloss while using cotton spun yarn.

  There is a demand for clothing that can be comfortably worn at high temperatures in summer. The demand is particularly high for inner use that directly touches the skin. For example, cotton with high hygroscopicity is often used as a comfortable material for underwear, but because it is a spun yarn, there are many fuzz in the yarn, resulting in a low feeling of cold contact and a hot problem. As a measure for improving this, a method using a synthetic fiber having a special cross section with an increased contact area with the skin has been proposed. For example, Patent Document 1 proposes a method using a multifilament having a heart-shaped cross section using nylon having high thermal conductivity. When this method is used, a feeling of cool contact can be obtained, but the filaments of synthetic fibers have a lower hygroscopicity than cotton, and when they sweat, it is easy to feel the uniqueness of the filaments.

  For inner use, there is also an attempt to improve the feeling of contact cooling by reducing the fluff of spun yarns in a knitted fabric using generally used cotton. For example, Patent Document 2 discloses a method in which a yarn made of 100% cotton is gas-fired to remove fluff and perform mercerization, and then knit the yarn to bio-process the knitted fabric. If this method is used, the cool feeling of contact can surely be improved, but the degree of knitted fabric is made finer than usual in order to increase the cool feeling of contact, so that the knitted fabric is heavy and the air permeability is low. The comfort was not always good.

  As described above, in the knitted fabric using the spun yarn mainly composed of cotton, the conventionally proposed technology cannot provide a fabric that satisfies the lightness, thinness, air permeability, and cool feeling of contact at the same time. It was.

JP 2011-038234 A JP 2010-281002 A

  The present invention was devised to solve such problems of the prior art, and its purpose is to provide excellent contact cooling and air permeability even for knitted fabrics using cotton spun yarn. It is to provide a light and thin knitted fabric.

  As a result of intensive studies to achieve the above-mentioned object, the present inventors have carried out fine spinning and twisting of fine spun yarns using cotton fibers having a long fiber length in order to reduce fluff, and mercerized with yarns. By processing, a spun yarn with very little fluff could be obtained. Furthermore, by knitting the spun yarn with a small amount of fluff at a high density, a knitted fabric having excellent contact cooling feeling could be obtained. And when the present inventors evaluated this knitted fabric, such a knitted yarn with a very thin and low fluff density is knitted with a normal thickness. It was found that high air permeability can be maintained as compared with.

This invention is completed based on said knowledge, and has the structure of the following (1)-(4).
(1) A knitted fabric knitted using a spun yarn containing 70% by weight or more of cotton having an effective fiber length of 35 to 45 mm, and the number of fluffs of 5 mm or more of the spun yarn is 0 to 15/10 m, spun yarn is a British expression count of seminal紡交twisting of 45-100 fastest, Tei Rukoto spun yarn is subjected to a mercerized, organization of 及 beauty knitting is milling, Katafukuro, Bear milling or smooth,, In the case of milling, single bag, bear milling, the number of needle loops of the knitted fabric is 1700 to 2500 / inch ² and in the case of smooth, the number of needle loops of the knitted fabric is 3000 to 4000 / inch ² knitting.
(2) The knitted fabric according to (1), wherein the spun yarn contains 50% by weight or more of cotton having an effective fiber length of 40 to 45 mm.
(3) The knitted fabric according to (1) or (2), wherein the thickness is 0.15 to 0.8 mm, and the basis weight is 80 to 150 g / m ² .
(4) The air permeability is 250 to 500 cc / cm ² · sec, and the contact cooling sensation is 0.20 to 0.40 W / cm ^2. Knitting.

  According to the present invention, even a knitted fabric using cotton spun yarn can provide a light and thin knitted fabric having excellent contact cooling feeling and air permeability, and can be comfortably provided in summer. A knitted fabric and an underwear using the same can be provided.

FIG. 1 shows an example of an apparatus for producing a fine spinning twisted yarn. FIG. 2 shows an organization chart of the milling knitting. FIG. 3 shows an organization chart of the smooth knitting.

  Hereinafter, the knitted fabric of the present invention will be described in detail. The spun yarn used in the knitted fabric of the present invention can be made of 100% by weight of cotton, or it can be mainly composed of cotton and used in combination with other cellulosic fibers as long as the properties of the cotton are not impaired. Other cellulose fibers blended with cotton are natural fibers such as hemp and rayon or regenerated fibers, and the amount used is 30% by weight or less. Fibers other than cellulosic fibers may be used together, but the mixing ratio in that case is preferably 20% by weight or less. When the mixing ratio exceeds 20% by weight, it tends to be difficult to obtain the effects of both the cool contact feeling and the air permeability of the present invention.

  The spun yarn of the present invention is characterized by using a finely spun and twisted yarn. Spun spinning twisted yarn is manufactured by drawing a fleece (coarse yarn) in the spinning process (draft), twisting two or more fleeces (coarse yarn) while twisting them and winding them on a spinning bobbin. It is obtained by doing. The reason why the finely spun and twisted yarn is used in the present invention is that there is an advantage that the fluff appearing on the surface of the spun yarn can be suppressed as compared with the single yarn or the double yarn. By twisting the fleece aligned in parallel, the two fiber groups can be twisted together while maintaining the parallelism of the fibers, so there are few fuzz. Further, when the single yarns are twisted together, a difference occurs in the twist angle between the center portion and the side portion of the yarn. In order to alleviate this distortion, twist migration occurs in individual fibers in the yarn, and the higher the twist, the more easily the fluff caused by this cause pops out. However, this migration does not occur when twisting two or more fleeces with high parallelism.

  In general fine spinning, the number of fluffs of 3 mm or more and 5 mm or more is 100 to 200/10 m and 20 to 50/10 m, respectively, for single yarn or twin yarn. By using the spun yarn, the number of fluffs of 3 mm or more and 5 mm or more can be reduced to 50 to 150/10 m and 10 to 30/10 m, respectively.

  The twist coefficient of the spun yarn of the present invention is 3.0 to 6.0 from the viewpoint of reducing the surface fluff of the spun yarn. Preferably it is 3.5-4.5. If it is less than 3.0, the yarn of the spun yarn will increase. If it exceeds 6.0, the torque of the yarn will be too strong, resulting in poor weaving in the weaving process, reduced appearance quality and wind. The match becomes hard.

  As the spun yarn of the present invention, cotton having an effective fiber length of 35 to 45 mm is preferably used. More preferably, the effective fiber length is 37 to 43 mm. Particularly preferably, the mixing ratio of cotton fibers having an effective fiber length of 40 to 45 mm is 50 to 100% by weight. The spun yarn has a microneya fineness (average fineness) of preferably 2.6 to 4.2 μg / inch, more preferably 2.6 to 3.9 μg / inch. Use of thicker and shorter fibers may increase the number of fluff on the spun yarn surface. Specific examples of these super long cottons include Umijima cotton, master seed, subin, new cotton, Giza 45, Giza 88, and Supima.

  The total fineness of the spun yarn of the present invention is 45 to 100 in English. The number is preferably 50 to 90, and more preferably 55 to 80. If it is thicker than 45, the knitted fabric using the spun yarn becomes heavy, and it is difficult to obtain a thin and light knitted fabric. Also, the air permeability tends to decrease when knitted at a high density. When the number exceeds 100, the finished knitted fabric becomes too thin and the cold feeling of contact tends to decrease.

  When using raw cotton as a spun yarn mainly composed of the above-mentioned cotton, first, the fiber lump of the raw cotton is opened, the mixed cotton process that drops large miscellaneous matter from the raw cotton, the fibers are separated into one and one, Remove the impurities and short fibers contained in them, align the remaining long fibers in parallel as much as possible, gather them into a string form (card sliver), and further remove the short fibers thoroughly. Concentrating and forming a string (comber sliver), a kneading process to stretch the fiber while straightening the corn sliver, eliminating uneven thickness in the length direction, and forming a string (stripe sliver) Then, while twisting the resulting sliver sliver, the fibers are prevented from slipping out and passed through a roving process that is wound around a bobbin to form a roving yarn. When other cellulosic fibers are used in addition to the raw cotton, it is desirable to add the combined fibers in the blended cotton process or the kneading process.

  The obtained plurality of rovings are spun and twisted by a spinning machine to become spun yarn. A case where a ring spinning machine is used as this spinning machine and a spun yarn in which two rovings are spun and twisted together will be described with reference to the apparatus shown in FIG. The ring spinning machine includes a draft portion from the back top roller 3 to the front bottom roller 11 and a twisted winding portion from the fleece 12 to the ring rail 18. After the roving yarns 1 and 2 are passed between the back top roller 3 and the back bottom roller 4 of the ring spinning machine at a predetermined speed, and the fiber bundle is sufficiently dispersed by the trumpet 5, the middle top roller 6, the middle bottom roller 7, The fiber bundle is firmly gripped by the top apron 8 and the bottom apron 9 and applied with a load, drafted while being controlled so as not to cause draft unevenness, and further drafted by passing between the front top roller 10 and the front bottom roller 11. A thin layered fleece 12 is formed.

  Next, the fleece 12 emerging from the front top roller 10 and the front bottom roller 11 passes through the snell wire 13 and then makes one turn of the traveler by the traveler 15 fitted on the ring 16 fixed on the ring rail 18. Is twisted at a rate of once and wound on the tube yarn 17. The finely spun and twisted yarn thus obtained has a cross-sectional shape close to a circle as compared with a normal single yarn (the cross-sectional shape is substantially elliptical). By using cotton having a long fiber length and a thin fineness, the surface fluff is less, and a soft texture and excellent gloss can be obtained. In the present invention, it is preferable that the obtained finely spun and twisted yarn is baked.

  The spun yarn of the present invention is subjected to mercerization (yarn sill). Yarn sill refers to a process in which a yarn is immersed in an alkaline solution such as caustic soda to swell cellulose. In the present invention, tension is applied particularly during thread sill processing to increase the parallelism of the fibers in the thread form. In this way, by strongly pulling the yarn during mercerization to improve the parallelism of the fiber, the fiber density increases and the apparent fineness of the yarn decreases. At this time, the cotton swells strongly, so that it shrinks in the fiber length direction, so that the fluff having a long filamentous surface can be reduced.

  Next, specific conditions when performing thread sill processing will be described. For example, a casserole with a circumference of 150 cm x 16800 times is created using a casserole machine and spun yarn is applied to a yarn mercerizing machine. And apply mercerizing. Then, it wash | cleans and neutralizes with tension | tensile_strength, and it is set as a mercerized yarn. Yarn tension during mercerization is about 380 to 420 kg / set. The caustic soda concentration during yarn mercerization may be processed at 5 to 30 ° Be, preferably 15 to 30 ° Be. More preferably, the treatment is performed in the range of 21 to 29 ° Be. In the yarn mercerization treatment, after moistening with a caustic soda solution, the tension is once relaxed by 85% to 95% to sufficiently penetrate the caustic soda. Thereafter, the original tension is applied again to perform washing and neutralization.

  When the diameter before and after the yarn sill of the English count 110/2 fine spinning and twisted yarn was measured, the diameter before the yarn sill was 0.15 mm, but the diameter after the yarn sill was 0.14 mm. The reduction rate of the yarn diameter before and after the yarn sill was 6.7%. Similarly, the diameter of the English count 145/2 fine spinning spun yarn was 0.13 mm before the yarn sill, and the diameter after the yarn sill was 0.12 mm. Similarly, even when the diameters before and after the 120 / 2R and 130 / 2R yarn sills were measured, the reduction rate of the yarn diameter was 6.3% and 6.2%. From this, it is preferable that the diameter change rate by the yarn mercerized while applying tension is −1 to −10%, more preferably −5 to −8%. Thus, the effect of a feeling of contact cooling increases by making a thread | yarn diameter into a negative change rate. Further, the effect of reducing the fineness and the effect of reducing the fluff makes it difficult to inhibit the air flow in the knitted loop when the knitted product is formed, and the air permeability of the entire knitted fabric is improved.

  The finely spun and twisted yarn after the yarn sill according to the present invention can have a fluff number of 5 mm or more of 0 to 15/10 m, and more preferably 0 to 5. When the number of fluff is larger than this, it becomes difficult to achieve both a cool feeling of contact and air permeability. By the way, the English count 110 / 2R spinning spun twisted yarn has a fluff count of 57.8 mm or more after spinning, 17.8 / 10m, and when it is gas-fried, it becomes 1.3 / 10m. After that, the number of fluffs of the yarn mercerized was 0.2 pieces / 10 m.

The knitted fabric of the present invention will be knitted using yarn described above should be considered as Thickness is reduced. In the present invention, (see FIG. 2) milling, (see FIG. 3) Smooth, Katafukuro preferable to make light and warm knit with thin Beafurai scan. In order to obtain a thin and light material, it is preferable to set the knitting structure to an appropriate density. The appropriate density varies depending on the knitting structure, but may be appropriately set within the range of 20 to 50 wales / inch and 30 to 100 courses / inch.

The number of needle loops of the knitted fabric of the present invention is 1 700 to 2500 / inch ² when the knitted fabric of the present invention is a mill, a single bag, or a bear mill. Also, if the knitted fabric of the present invention is smooth, a 3 000-4000 pieces / inch ^2. When the number of loops is small, it is difficult to obtain a feeling of contact cooling. When the number of loops is large, the texture becomes hard and the air permeability is deteriorated.

  In the knitted fabric of the present invention, other yarns can be knitted in a range in which the mixing ratio of the spun yarn does not fall below 50% by weight. However, even in such a case, it is preferable that the yarn used for maintaining the thin and light properties is a thin yarn of 50 to 120. More preferably, it is 60-90. It is not particularly limited as long as it is a thin thread of 50th or more. A general spun yarn may be used, but a filament or a composite yarn in which short fibers and filaments are mixed is also preferably used. When the filament is used alone, a fineness filament of 50 dtex or less may be used.

The thickness of the knitted fabric of the present invention is preferably 0.15 to 0.8 mm. More preferably, it is 0.2-0.7 mm. If it is thinner than the above range, the feeling of contact cooling tends to be lowered, and if it is thicker than the above range, the air permeability may be lowered or the thin and light texture may be impaired. The basis weight of the knitted fabric of the present invention is preferably 80 to 150 g / m ² . More preferably, it is 85-135 g / m < ² >. Those lighter than the above range tend to be too sweet and have a feeling of cool contact, and those heavier than the above range tend to be thin and light.

  For the dyeing process of the knitted fabric of the present invention, a normal cellulose fiber or a mixed knitted fabric processing method with other fibers can be employed. In the present invention, it is preferable to further perform mercerization (anti-silence) in the knitting dyeing process. It is preferable that the mercerization process in the knitted fabric is performed in a spread form by opening. More preferably, it is preferable to use a method in which a clip tenter-type mercerizing machine can be used to process both warp and weft while applying tension. The mercerizing process performed on the knitted fabric is performed mainly for the purpose of improving the feeling of contact cooling by treating the aqueous caustic soda solution, and the caustic soda concentration is 5 to 30 ° Be. Preferably it is 15-30 degree Be, More preferably, it is 25-29 degree Be. The treatment liquid may be heated or cooled, but may be used at room temperature. The treatment time of the caustic soda solution may be about 30 to 60 seconds.

  The knitted fabric of the present invention may be provided with a general finishing process such as a softening agent or an antistatic agent, or may be subjected to various other functional processes alone or in combination. Examples of functional processing include, but are not limited to, antifouling processing such as hydrophilic processing, UV cut processing, electrostatic processing, and skin care processing.

Since the knitted fabric of the present invention is configured as described above, the cold feeling of contact can be 0.20 to 0.40 W / cm ² . If it is lower than 0.20 W / cm ^{2, the} feeling of cooling when worn is inferior, and if it is higher than 0.40 W / cm ² , it is difficult to reduce the thickness and weight.

  The knitted fabric of the present invention can have a very high-grade luster by subjecting it to a mercerization process by applying tension as the total fineness of the yarn decreases. In the knitted fabric of the present invention, a soft texture can be obtained by using ultra-long cotton with fine fibers to obtain a fine yarn. In order to make it soft, the total fineness of the yarn is preferably thinner than 45/1. If it is made thinner than 60/1, the texture becomes remarkably softer. Furthermore, since the knitted fabric of the present invention has a high degree of parallelism of the fibers constituting the yarn, and the knitted structure is thin and has a small basis weight, the knitted fabric has the characteristics of being excellent in quick drying while being 100% cotton. In order to increase the quick-drying property, the water-absorbing diffusibility may be increased. However, when a soft material that increases the water-absorbing property is used, the surface texture becomes hard, so care must be taken. The quick-drying property of the knitted fabric of the present invention can achieve 45 to 65 minutes as the drying time when it is made of 100% cotton yarn.

Since the knitted fabric of the present invention is configured as described above, an air permeability of 250 to 500 cc / cm ² · sec can be achieved. This numerical range is an extremely large air permeability value for a high-density knitted fabric. The cause of this is that the spun yarn has very little fluff, but in addition to this, it was considered that the effect was unexpectedly increased by using a very thin knitted fabric.

  The knitted fabric of the present invention has a high feeling of contact cooling and good air permeability, and is therefore suitable for summer clothing. It is particularly suitable for applications that come into direct contact with the skin, such as underwear and sports shirts. Moreover, since it is thin and light, even if it is layered from the top, it can be worn coolly without feeling go-go.

  Hereinafter, although the effect of the knitted fabric of the present invention is shown by examples, the present invention is not limited to these. The characteristic values were evaluated according to the following method.

(1) Total fineness;
An apparent cotton count (English count) was measured in accordance with the method of JIS-L-1095-9.4.2.

(2) Yarn Diameter Yarn diameter was measured using USTER TESTER 5-S800 manufactured by Worcester.

(3) Fluff index The number of fluff having a length of 3 mm per 10 m and a length of 5 mm was determined according to JIS-L-1095, using a finely spun twisted yarn or a yarn with a raised sill.

(4) Effective fiber length of cotton fiber It measured based on A method (double sorter method) of fiber length of JIS-L-1019-7.2.1.

(5) Micronair fineness of cotton fiber It calculated | required based on the method by the micronea of the fineness of JIS-L-1019-7.4.1.

(6) Twist factor The number of twists was measured in accordance with the JIS-L-1095-9.15A method, and the twist factor (K) was determined by the following formula.
Twist factor (K) = Twist times per inch (T) / √ Count ('s)

(7) Knitting properties (number of yarn breaks in knitting machine)
The number of yarn breaks / number of yarn breaks per 10 kg was measured and indicated as ◎ for 0-1 yarns, ○ for 2-3 yarns, and Δ for 4 or more yarns.

(8) Spinnability (number of spinning machine yarn breakage)
The number of yarn breaks / 400 SP · the number of one hour was measured, and indicated as “◎” for 2 or less, “◯” for 3-5, and “Δ” for 6 or more.

(9) Weight per unit area Measured according to the basis weight of the JIS-L-1018-6.4.2 remarks on test methods for knitted fabrics.

(10) Thickness Measured according to the thickness of the knitted fabric test method of JIS-L-1018-6.5.

(11) Breathability Measured according to JIS-L1096 A method (Fragile type method).

(12) Drying property The diffusible residual moisture content was used as an index for evaluating drying property. A knitted fabric of a sample piece was cut out to a size of 10 cm in the well direction and 10 cm in the course direction, and the mass (W0) of the knitted fabric sample adjusted in a standard state (20 ° C. × 65% RH) was measured. Next, the sample was spread under no tension, and the mass (W1) of the knitted fabric sample after 0.6 mL of water was dropped onto the back surface center of the knitted fabric sample was measured. Thereafter, the mass (W2) of the knitted fabric sample after 30 minutes was measured with the knitted fabric sample suspended. From these measured values, the diffusible residual moisture content of the knitted fabric was calculated from the following equation.
Diffusive residual moisture content (%) = (W2−W0) × 100 / (W1−W0)

(13) Cool feeling of contact (Qmax)
Cut out the knitted fabric of the sample piece to a size of 15 cm in the well direction and 15 cm in the course direction, and use a precision rapid thermal substance measuring device Thermolab II manufactured by Kato Tech Co., Ltd. under constant temperature and humidity conditions of 20 ° C. × 65% RH. It was measured. The initial temperature of the thermolab sample was 20 ° C., the hot plate temperature was 40 ° C., and the back of the knitted fabric was measured in contact with the hot plate. In addition, the measured value Qmax (W / cm < ² >) was made into the average value of five times of experiment.

(14) Texture (softness)
The texture was evaluated according to the following criteria by sensory evaluation by five skilled engineers. A fabric that feels the softness of the knitted fabric is considered “very good”, and a fabric that feels rugged and firm is “inferior”. : Slightly inferior, 1: Inferior, was evaluated on the basis of five grades. At that time, the finished fabric of Comparative Example 2 was set to 3 (neither), and a relative evaluation was performed using an evaluation standard. The average value of the scores evaluated by each engineer was taken, and the average value was displayed as 4 to 5 as ◎, 3 to 4 as ○, 2-3 as Δ, and 1-2 as ×.

(15) Gloss Gloss was evaluated according to the following criteria by visual observation by five skilled engineers. A fine and soft natural gloss can be felt as “very good”, and a glossy feeling cannot be felt as “inferior”, 5: very good, 4: excellent, 3: neither, 2: slightly inferior, 1: Gloss evaluation was performed on the basis of five levels of inferiority. At that time, the finished fabric of Comparative Example 2 was set to 3 (neither), and a relative evaluation was performed using an evaluation standard. The average value of the scores evaluated by each engineer was taken, and the average value was displayed as 4 to 5 as ◎, 3 to 4 as ○, 2-3 as Δ, and 1-2 as ×.

Example 1
Subfiber cotton (effective fiber length 42.5 mm, fineness 2.9 μg / inch) as short fiber A and Giza 88 (effective fiber length 36 mm, fineness 3.9 μg / inch) as short fiber B at a weight ratio of 70:30 OHARA After blending with a cotton blender, a card sliver was made with a card machine manufactured by Ishikawa Seisakusho. The card sliver was passed through a combing machine to leave only a long fiber length to be a comb sliver, and then passed twice through a raw loom mill to obtain a 250 selenium / 6 yd sliver. Further, a roving machine of 50 gelen / 15 yd was produced through a roving machine manufactured by Toyota Industries Corporation. Next, using this two roving yarns in a spinning machine, a draft of about 46 times was applied, and a 55th fine spinning-twisted yarn was produced with an English count. Thereafter, the finely spun and twisted yarn was gas-fired and fuzz-fired. The twist coefficient of the spun yarn was measured and found to be 3.8. The finished spinning spun twisted yarn is made into a casserole having a total length of 25200 m and a circumference of 150 cm, and then 280Be concentration of caustic soda using a yarn mercet (Nishi-Nakajima Seiki casket mercerizing machine) and tensioning the casserole with a tension of 400 kg / cassette. After being wetted and subjected to mercerization (yarn sill), a mercerized yarn was obtained through neutralization and drying.

  The finished mercerized yarn was knitted with a 33 ″ (inch) -24G milling machine (Fukuhara Machine). The knitting conditions were knitting with a knitting structure shown in FIG. 1 as a knitting yarn length of 410 mm / 100 wale.

The finished knitted fabric was subjected to hair burning, mercerization, scouring, bleaching, dyeing and finishing as described below. After the hair was burnt, mercerization (anti-silling) was performed using a continuous mercerizing machine in which both vertical and horizontal tensions were applied by spreading with a clip tenter. The mercerizing conditions were caustic soda soaked in a processing solution having a concentration of 260 Be and then washed with water by applying a tension to the vertical and horizontal sides. Thereafter, scouring bleaching was carried out by treating the knitted fabric subjected to mercerization using the liquid dyeing machine NS type manufactured by Hisaka Seisakusho using the following treatment method 1, followed by washing with hot water three times and washing with water.
Formulation 1: Caustic soda (made by Nippon Soda) 5g / L,
Scouring agent (Pitch Run L250, manufactured by Nikka Chemical Co., Ltd.) 2 g / L,
Sodium tripolyphosphate (manufactured by Tada Pharmaceutical Co., Ltd.) 2 g / L,
Hydrogen peroxide stabilizer (PLC7000 manufactured by Nikka Chemical Co., Ltd.) 1 g / L,
35% hydrogen peroxide 15ml / L
PERSOTHAL MAX (Nikka Chemical Co., Ltd. bath softener) 1g / L
Bath ratio 1:10, temperature 95 ° C, treatment for 60 minutes

Then, after reactive dyeing with the following prescription 2, soaping, neutralization, and water washing, after softening treatment with the following prescription 3, take out from the dyeing machine, centrifugal dehydration and spreading, rough run, short loop dryer It was heated at 150 ° C. for 1 minute and dried with hot air.
Formulation 2: Reactive dye (Sumitix Supra BLUE BRF 1% owf manufactured by Sumika Chemtex Co., Ltd.)
Softener in bath (Persophthal MAX) 2g / L
Anhydrous salt glass (manufactured by Tosoh Corporation) 30g / L
Alkaline agent (MS171 manufactured by Meisei Chemical Industry Co., Ltd.) 5g / L
Bath ratio 1:10, dyeing temperature 60 ° C., 60 minutes Formulation 3: Sand Palm MEJ-50 Liquid 1.0% owf manufactured by Clariant

After dyeing, centrifugal dehydration, and draw-drying were performed to adjust the amount of material, and a fabric having a basis weight of 125 g / m ² was obtained as the final fabric. Knitted fabrics with a knitted fabric density of 43 wale (W) / inch and 44 course (C) / inch were obtained. The details of the knitted fabric and the evaluation results are shown in Table 1. The knitted fabric of Example 1 had a low basis weight and thickness, a high air permeability and a feeling of contact cooling, and had a clean surface feeling (gloss) and excellent drying properties.

Example 2
A knitted fabric was produced in the same manner as in Example 1 except that the gauge of the knitting machine was changed to 18G. The knitted fabric of Example 2 was not as glossy as Example 1, but the same evaluation results could be obtained.

Example 3
A knitted fabric was produced in the same manner as in Example 1 except that the spinning conditions of the spun yarn were changed by a spinning machine so that the number of fine spinning was 73. The twist coefficient of the yarn was 3.8. The knitted fabric of Example 3 had a lower basis weight and thickness than those of Example 1, and had high air permeability and a feeling of cool contact.

Example 4
The finely spun and twisted mercerized yarn of No. 73 used in Example 3 was knitted smoothly with a 33 ″ (inch) -32G double knit knitting machine (Fukuhara Machine). The knitting conditions were knitting with a knitting yarn length of 210 mm / 100 wale (knitting structure shown in FIG. 3). The dyeing process was performed in the same manner as in Example 1. Although the knitted fabric of Example 4 was slightly lower in air permeability than that of Example 1, it had high contact cooling feeling and gloss.

Example 5
A knitted fabric was produced in the same manner as in Example 1 except that Supima cotton (effective fiber length: 35 mm, fiber fineness: 4.0 μg / inch) was used as the yarn to be used, and the 55th spun yarn was spun. . The yarn was spun under the same conditions as in Example 1. The knitted fabric of Example 5 had a slightly lower gloss than that of Example 1. The texture was slightly harder than that of Example 1, but at the same level. Other characteristics were close to those of Example 1.

Comparative Example 1
A knitted fabric was produced in the same manner as in Example 1 except that the spun yarn of Example 1 was not subjected to hair burning and mercerization. The knitted fabric of Comparative Example 1 had a very large amount of yarn fluff, a feeling of fluff on the surface of the fabric, and lacked air permeability and gloss.

Comparative Example 2
A single yarn of No. 80 was spun from the spun yarn using the same coarse yarn as in Example 1 with a fine spinning machine, and then twin yarn processing was performed using a twister to obtain No. 80 double yarn. Next, yarn mercerization was performed in the same manner as in Example 1 to obtain 80/2 mercerized yarn. A milled knitted fabric was obtained with a knitting yarn length of 456 mm / 100 W using a 37 ″ (inch) -18G knitting machine using the mercerized yarn, and then subjected to a dyeing process in the same manner as in Example 1 to obtain a knitted fabric. Got. The knitted fabric of Comparative Example 2 had a high density and a high basis weight and thickness because the count was thick and the knitting yarn length was short. The knitted fabric lacked breathability and texture although it had a high feeling of contact cooling.

Comparative Example 3
A single yarn of No. 80 was spun from the spun yarn using the same coarse yarn as in Example 1 with a fine spinning machine, and then twin yarn processing was performed using a twister to obtain No. 80 double yarn. After the milling knitted fabric was obtained by using a knitting machine of 37 ″ (inch) -18G with a knitting yarn length of 456 mm / 100 W using the 80 twin yarns without performing the yarn mercerization processing, A knitted fabric was obtained by dyeing in the same manner as in Example 1 except that the processing was not performed. As in Comparative Example 2, the knitted fabric of Comparative Example 2 had a thick count and a short knitting yarn length, and therefore had a high density and a high basis weight and thickness. Although the contact feeling was high, the knitted fabric lacked air permeability and gloss.

  According to the present invention, even a knitted fabric using cotton spun yarn can provide a light and thin knitted fabric having excellent contact cooling feeling and air permeability, and can be comfortably provided in summer. A knitted fabric and an underwear using the same can be provided.

1, 2 Coarse yarn 3 Back top roller 4 Back bottom roller 5 Trumpet 6 Middle top roller 7 Middle bottom roller 8 Top apron 9 Bottom apron 10 Front top roller 11 Front bottom roller 12 Fleece 13 Snell wire 14 Spindle 15 Traveler 16 Ring 17 Tube Thread 18 Ring rail

Claims (4)

A knitted fabric knitted using a spun yarn containing 70% by weight or more of cotton having an effective fiber length of 35 to 45 mm, wherein the number of fluff of the spun yarn of 5 mm or more is 0 to 15/10 m, and the spun yarn is a British-type count of the spinning紡交twisting of 45-100 fastest, Tei Rukoto spun yarn is subjected to mercerization, tissue 及 beauty knitting is milling, Katafukuro, bare milling or smooth, milling, migraine In the case of bags and bear mills, the number of needle loops of the knitted fabric is 1700 to 2500 / inch ² and in the case of smooth, the number of needle loops of the knitted fabric is 3000 to 4000 / inch ² .   The knitted fabric according to claim 1, wherein the spun yarn contains 50% by weight or more of cotton having an effective fiber length of 40 to 45 mm. A thickness of 0.15～0.8Mm, or knitted fabric according to claim 1 or 2 basis weight is characterized by a 80 to 150 g / ^{m 2.} The knitted fabric according to any one of claims 1 to 3, wherein the air permeability is 250 to 500 cc / cm ² · sec, and the contact cooling feeling is 0.20 to 0.40 W / cm ² .