JP2020007668A - Composite yarn and woven or knitted fabric using the same - Google Patents

Abstract

To provide a composite yarn for producing a comfortable fiber product which effectively releases heat on a body surface to the outside of the body, and which is adapted to both liquid and gaseous sweat; and to provide a woven or knitted fabric using the same; particularly to provide a woven or knitted fabric excellent in comfort, which enhances heat transfer due to contact with the skin, thereby suppressing a rise in temperature within the fiber product, which effectively absorbs moisture insensibly perspired, thereby suppressing a rise in humidity, and which does not give sticky feeling even with sweat in a liquid phase and maintains, as long as possible, a period of time when a wearer feels comfortable.SOLUTION: There is provided a composite yarn of 5-40 English count, comprising: filaments having a heat conduction coefficient of 2.2 W/mK or more; and cellulose short fibers. The composite yarn has a moisture percentage of 2.5-12% at 20°C and 65% RH. The number of pieces of fuzz having a length of 3 mm or more present on the surface of the yarn is 20-200 per yarn length of 10 m.SELECTED DRAWING: Figure 1

Description

  INDUSTRIAL APPLICABILITY The present invention is used for a woven or knitted fabric which is comfortable in spring and summer, for example, has a high contact cooling sensation when worn as bedding or underwear, and has excellent wear comfort during sweating such as skin separation and moisture absorption. And a woven or knitted fabric using the same.

  In textile products directly worn on the skin such as bedding and underwear sports underwear, a contact cooling material is suitably used to cope with summer heat.

  In order to enhance the heat conduction from the skin, various measures have been taken, such as using fibers having good heat conductivity and reducing the unevenness of the fiber surface to increase the contact area. Knitted fabric comfort fabrics having improved thermal conductivity and a cool sensation upon contact have been proposed for clothing and clothing materials that enhance the cold sensation (see Patent Document 1). However, this cloth has a very high performance for instantaneous cooling sensation, but does not consider the comfort when sweating, and the feeling of humidity due to the increase in humidity between the skin and the cloth in clothes or bed. And it was difficult to suppress the stickiness when sweating.

  In addition, by effectively absorbing moisture and suppressing the rise in humidity, the sweat point from the sweat glands is delayed, the time for feeling comfortable is kept as long as possible, and the fiber is excellent in thermophysiological comfort. A product has been proposed (see Patent Document 2). However, in this product, it is necessary to use a long fiber that can easily obtain a cooling sensation and a fiber product with a high packing density. When the fabric gets wet, the fabric sticks to the skin, causing a sticky sensation, which is likely to cause discomfort. Further, in the case of a cooling sensation material used in a conventional shirt or the like, it is difficult to obtain a sustained cooling sensation even though an instant contact cooling sensation can be obtained.

JP 2010-236130 A JP 2014-139355 A

  SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems of the prior art, and has an object to effectively release heat from the body surface to the outside, and to comfortably deal with both liquid and gaseous sweat. An object of the present invention is to provide a composite yarn for producing a novel fiber product and a woven or knitted fabric using the same. In particular, when the heat transfer due to contact with the skin is increased to suppress the rise in temperature inside the textile product, and the moisture which has been insensitively vaporized is effectively absorbed to suppress the rise in humidity, and when the liquid phase is sweated Another object of the present invention is to provide a woven or knitted fabric excellent in comfort, which has no stickiness and keeps a comfortable feeling time as long as possible.

  The present inventor has conducted intensive studies to achieve the above object, and as a result, constructed a thick composite yarn composed of a filament having high thermal conductivity and a cellulose fiber, and adjusted the moisture content of the yarn and the number of surface fluffs to a specific range. As a result, it is possible to effectively improve heat transfer due to contact with the skin, and to improve water and moisture absorption of liquid and gaseous sweat, and as a result, the wearer feels a sustained cooling sensation They have found that they can do this and have completed the present invention.

That is, the present invention has the following configurations (1) to (4).
(1) A composite yarn composed of a filament having a thermal conductivity of 2.2 W / mK or more and a cellulose short fiber and having a yarn count of 5 to 40, and having a moisture content at 20 ° C. and 65% RH of the yarn. A composite yarn comprising 2.5 to 12%, wherein the number of fluff having a length of 3 mm or more present on the surface of the yarn is 20 to 200 per 10 m of yarn length.
(2) The filament according to (1), wherein the filament is at least one fiber selected from the group consisting of high molecular weight polyethylene fiber, aramid fiber, polyarylate fiber, polybenzazole fiber, and carbon fiber. Composite yarn.
(3) The composite yarn according to (1) or (2) is contained in an amount of 30% by weight or more, has a basis weight of 120 to 700 g / m ² , and has an instantaneous heat transfer amount of 0.028 W for 10 seconds at 20 ° C. to 30 ° C. / Cm ² or more, and the adhesiveness is 0.8 ml or more.
(4) A pile woven or knitted fabric using the composite yarn according to (1) or (2) for a pile, and has a thickness deformation of 1.3 to 2 representing a thickness at a pressure of 0.7 kPa / a thickness at a pressure of 89 kPa. A pile woven or knitted fabric characterized in that the instantaneous heat transfer for 10 seconds at 20 ° C. to 30 ° C. is 0.028 W / cm ² or more.

  According to the composite yarn of the present invention, a woven or knitted fabric using the same has a high moisture absorption, heat radiation, high contact cooling feeling, and a persistent cooling sensation is felt from the beginning of wearing even when worn in midsummer, and Even when sweating is strong, a sticky feeling that remains on the skin is unlikely to occur, and it is possible to effectively cope with unpleasant sweating, both insensitive sap and liquid phase sweat. Therefore, it is very suitable for textile products for bedding such as underwear, sports underwear, bed pads, mattresses, futon covers, and the like, which are strongly required.

It is a SEM photograph of the side of the composite spun yarn of the present invention. It is a schematic side view of the manufacturing device of the long and short composite spun yarn of the present invention. It is a schematic explanatory view of a thermal conductivity measuring device of a fiber. It is the example of a chart which measured the instantaneous heat flow.

  Hereinafter, the present invention will be described in detail. Conventional contact cooling materials have been devised to increase the contact area between the woven or knitted material and the skin as much as possible in order to increase the thermal conductivity. Therefore, as the fiber used for the cooling sensation material, a long fiber having less fluff is preferred, and a texture having less unevenness on the surface of the woven or knitted fabric is often used. However, such a cooling sensation material has a drawback that when it is wet with sweat, stickiness is strongly generated and the woven or knitted fabric is stuck to the skin, which is extremely uncomfortable. The present invention is characterized in that in order to solve this drawback, a composite yarn is obtained by combining a long fiber having high thermal conductivity and a short fiber having high moisture absorption and water retention so as to have a specific yarn cross section. .

  The long fiber used in the composite yarn of the present invention needs to be a filament having a thermal conductivity of 2.2 W / mK or more. Examples of the filament include high molecular weight polyethylene fiber, aramid fiber, polyvinyl alcohol fiber (3.2 W / mK), polybenzazole fiber, carbon fiber, Tencel (Lyocell) cupra (2.3 W / mK), and the like. These are not limited to being used alone, and may be selected from one or a plurality of types of fibers. In addition, even if a filament having a heat conduction coefficient of less than 2.2 W / mK is mixed with a part of the composite yarn, if the average heat conduction coefficient is 2.2 W / mK or more in terms of fineness ratio of a plurality of kinds of fibers. The object of the present invention can be achieved. This case is also within the scope of the present invention.

  As the filament used in the composite yarn of the present invention, it is more preferable to use a high thermal conductivity fiber having a thermal conductivity of 10 W / mK or more. High heat conductive fibers having a heat conductivity coefficient of 10 W / mK or more include high molecular weight polyethylene fibers (10 to 50 W / mK), aramid fibers, polyarylate fibers, polybenzazole fibers (26 to 35 W / mK), and carbon fibers. And the like. While ordinary polyethylene has a viscosity-average molecular weight of 2 to 300,000, high-molecular-weight polyethylene referred to in the present invention refers to those having a viscosity-average molecular weight of 500,000 or more, and particularly those having a viscosity-average molecular weight of 1.5 million or more to ultra-high molecular weight. Polyethylene. These are not limited to being used alone, and may be selected from one or a plurality of types of fibers. By using the high thermal conductive fiber, a high cooling sensation can be maintained for a long time.

  The total fineness of the filament used in the composite yarn of the present invention is preferably from 70 dtex to 450 dtex. More preferably, it is 140 dtex to 250 dtex. When the total fineness is less than the above range, a sustained cooling sensation is hardly obtained, and when the total fineness is more than the above range, it is difficult to obtain softness that accompanies the skin. The cross-sectional shape of the filament is not particularly limited, but is preferably a cross-sectional shape such as a round shape, a rectangular shape, a polygon having four or more squares, and an ellipse, from which thermal conductivity can be easily obtained. The fineness (single yarn fineness) of one fiber in the filament is preferably 0.8 to 4.5 dtex. More preferably, it is 0.9 to 3.0 dtex. Although the form of the fiber is not limited, it is more preferable to use raw silk without crimping.

  The composite yarn of the present invention preferably contains 30 to 80% by weight of a filament. More preferably, it is 40 to 70% by weight. With this mixing ratio, a lasting contact cooling sensation can be obtained. If the ratio is more than the above, the feeling of stuffiness tends to be felt during wearing, the peeling property from the skin tends to decrease, and the cooling sensation of contact tends to decrease. If the ratio is less than the above ratio, it is difficult to obtain a sustained contact cooling sensation.

  The composite yarn of the present invention needs to contain cellulose short fibers in addition to the filaments of long fibers described above. As a result, the performance of moisture absorption / desorption and water absorption of the woven or knitted fabric, and the ability of the woven or knitted fabric to be separated from the skin due to fluff can be improved. Cellulose short fibers are classified into natural fibers, regenerated fibers, and synthetic (semi-synthetic) fibers. Examples of the regenerated fiber include viscose rayon, polynosic rayon, cuprammonium rayon, high wet modulus rayon, solvent-spun cellulose and the like. Examples of the natural fiber include cotton (2.4 W / mK), hemp (Rummy 4.2 W / mK), bamboo (4.3 W / mK), hemp, and the like. Among them, regenerated cellulose fibers are preferred because of their high hygroscopicity and high cooling sensation. More preferably, polynosic, cupra, and tencel (Lyocell) are preferable in that they have a high thermal conductivity (2.3 W / mK) and a round cross-section, so that a contact cooling sensation can be easily obtained. Cellulose fibers can be modified, or a functional material can be kneaded to further increase the hygroscopicity, or to impart deodorant or other functions.

  The single yarn fineness of the cellulose short fibers used in the composite yarn of the present invention is preferably 0.3 to 5.0 dtex. More preferably, it is 0.5 to 1.5 dtex, and still more preferably, 0.5 to 0.5 to 1.0 dtex. If the single yarn fineness exceeds the above range, the fluff appearing on the fiber surface has high rigidity and the texture tends to be poor. When the single yarn fineness is below the above range, the fibers are liable to be cut during use, the abrasion is deteriorated, and the fluff is liable to fall off. The fiber length is preferably 20 to 60 mm. More preferably, it is 30 to 55 mm. When the fiber length is less than the above range, the surface fluff of the composite yarn becomes too large, and it is difficult to obtain a contact cooling sensation. If it exceeds the above range, on the contrary, the fluff becomes too small, and the sticky feeling when wet is apt to increase.

  It is preferable that the composite yarn of the present invention contains 20 to 70% by weight of cellulose short fibers. More preferably, it is 30 to 60% by weight. With this mixing ratio, the fluff on the surface of the composite yarn can suppress the deterioration of skin releasability when sweating. If the mixing ratio is higher than this, the contact cooling sensation tends to be reduced. If the mixing ratio is lower than this, it becomes difficult to absorb the insoluble and vaporized moisture from the skin surface to make it comfortable.

  Examples of the form of the composite yarn of the present invention include a twisted composite yarn and a spun-twisted composite spun yarn shown in FIGS. 1 (a) and 1 (b), respectively. As a method for producing them, first, a method of combining a yarn spun from cotton containing cellulose short fibers alone or cotton containing cellulose short fibers with long fibers is used. This is a composite yarn obtained by alternately twisting a cellulose spun yarn and a long fiber. Specifically, a method in which the spun yarn and the long fiber are aligned and twisted, a method in which the spun yarn is wound around the long fiber and covered, and the like are suitably used. As another manufacturing method, there is a method in which a long fiber is mixed during spinning of a short fiber to produce a yarn. As a method of mixing during the spinning before the finished yarn is formed, a spinning twisting method in which the short fiber fleece is drafted during the spinning process and then mixed with the long fiber can be used. Specifically, long fibers can be combined at the position A or the position B of the spinning device shown in FIG. In the present invention, the method of spinning at the position B is more preferable from the viewpoint of cool feeling and skin separation.

  In the apparatus of FIG. 2, the roving of the cellulose short fiber is released from the shinomaki 2, supplied to the back roller 7 via the guide 6, and between the back roller 7 and the second roller 8, the second roller 8 and the front roller 9. And is spun from the front roller 9. On the other hand, the long fiber is released from the pan 1, passes through the guide 2, passes through the tension device 3, and merges with the cellulose fiber bundle. At this time, when the yarn passes through the yarn path B, it joins the fiber bundle 10 by the winding torque of the cellulose fiber bundle 10 through the coating control guide 4, is wound and coated, and then is twisted by a traveler (not shown) through a snell wire. To be wound around the bobbin 5 as a composite spun yarn.

  The side surface of the composite yarn of the present invention has a feature that long fibers are continuously exposed in the yarn axial direction as shown in FIG. By exposing the long fibers, the surface of the woven or knitted fabric can be uniformly provided with high contact cooling sensation. Further, since the long fibers are present on the surface of the composite yarn, the surface fluff of the spun yarn can be controlled to an appropriate amount. It is preferable that the proportion of exposed long fibers on the surface of the composite yarn is 40% or more of the outline of the cross section of the composite yarn. It is more preferably at least 50%, further preferably at least 60%. When the proportion of long fibers in the cross-sectional profile of the yarn is lower than the above proportion, the cooling sensation of contact tends to decrease. Further, in the cross section of the composite yarn, it is preferable that the filaments converge as a group. Since the filaments are converged, the thermal conductivity of the filament can be effectively exhibited.

  The total fineness of the composite yarn of the present invention needs to be 5 to 40 counts in English cotton count. Preferably it is 10 to 30th. When the thickness is smaller than the above range, it is difficult to obtain a sustained cooling sensation, and when the thickness is larger than the above range, the woven or knitted fabric becomes heavy or the woven or knitted fabric tends to be coarse, and it becomes difficult to obtain comfortable clothing or bedding.

  The composite yarn of the present invention has a moisture content of 2.5 to 12% at 20 ° C. and 65% RH (relative humidity). More preferably, the moisture content is 4 to 8%. If the water content is less than the above range, the absorption (hygroscopicity) of vapor-phase sweat (dead steam) released from the skin is poor, which is not preferable. On the other hand, if the water content exceeds the above range, the stickiness becomes too strong when a large amount of liquid sweat is absorbed, which is not preferable.

  In the composite yarn of the present invention, the number of fluffs having a length of 3 mm or more present on the yarn surface is 20 to 200 per 10 m of the yarn length. The lower limit of the number of fluffs is preferably 30, and more preferably 40. The upper limit is preferably 190, and more preferably 180. By setting the number of fluffs in this way, it is possible to improve the skin separation property and obtain the sustained cooling sensation without significantly reducing the contact cooling sensation. If the number of fluffs exceeds the above range, the contact cooling sensation tends to decrease, and if the number of fluffs is below the above range, stickiness when liquid phase sweat is apt to occur. The number of fluffs of 1 mm or more present on the yarn surface of the composite yarn of the present invention is preferably 100 to 500 per 10 m of yarn length.

  When the composite yarn of the present invention is used for a woven or knitted fabric, it is preferable that the composite yarn be contained in an amount of 30% by weight or more as a whole in order to enjoy the effect. And it is preferable that the composite yarn exists at least on the surface that contacts the skin. In a woven or knitted fabric having a plurality of layers in the thickness direction, such as a warp knit using a double knit or a plurality of reeds, or a double weave, it is possible to use a composite yarn for at least a part of the yarn constituting the outermost layer on the skin side. preferable. Of the yarns constituting the skin surface, the use ratio of the composite yarn is preferably 50% by weight. It is more preferably at least 60% by weight. It is more preferably at least 70% by weight. If the composite yarn is used in an amount less than the above range, a sustained cooling sensation tends to be hardly obtained.

  In the case of a woven fabric, a composite yarn is used for at least one of the warp and weft yarns, and a plain weave, a twill weave, a satin weave, a multiple weave, or the like can be used. In particular, high-density plain weave and satin weave are preferable because they can increase the contact area with the skin. In the case of a knitted fabric, a flat knitting machine, a single knitting machine and a double knitting machine can be used for a circular knitted fabric, and a single bed knit and a double bed knit can be used for a flat knitted fabric. Although not particularly limited to a knitting structure or the like, preferred structures include sheeting and smooth. In the case of a warp knitted fabric, a single tricot, a double tricot, a single Russell, or a double Russell can be used, and a half, Denby, or Atlas structure is preferable. The woven or knitted fabric of the present invention is characterized in that it has a long-lasting contact cooling sensation, and a pile woven or knitted fabric is suitable as a structure for further improving the continuity.

  When used for bedding, it is particularly preferable to make a pile woven or knitted fabric using the composite yarn of the present invention for a pile. When a load such as weight is applied to the pile, the pile bends along the body and is densely packed on the skin contact surface, so that the contact area is increased and a cool feeling is easily obtained. The thermal conductivity of the fibers is higher in the direction of the fiber axis than in the direction perpendicular to the fiber axis.However, since the pile stands on the surface of the fabric, heat is released in the thickness direction of the fabric along the fiber axis. Cheap. Therefore, there is an advantage that the sustainability of the cooling sensation is very high. In addition, it absorbs a large amount of liquid-phase sweat, so it is not sticky. As examples of the pile fabric, tissues such as towels, velveteen, and velvet can be used. In the case of circular knitting, for example, a pile knitted fabric such as a sinker pile and a latch pile can be used. When the woven or knitted fabric of the present invention is a warp knit, a Raschel blanket or the like can be used. The pile woven or knitted fabric may be used as a pile loop, or may be used after cutting the pile loop. The pile height is preferably in the range of 1 to 10 mm. If it is less than 1 mm, the effect of the pile on the cooling sensation persistence is hardly obtained. When the thickness exceeds 10 mm, the cooling sensation persistence is hardly further improved, and the production cost is increased, and the productivity is liable to be deteriorated.

The thickness of the pile woven or knitted fabric of the present invention is measured with a dial thickness gauge 0.01 mm type model FFG-11 (measuring force 0.35 N, measuring element area 5 cm ² ) manufactured by Ozaki Corporation. It is preferably at least 5 mm, more preferably at least 1.0 mm. On the other hand, the upper limit of this thickness is preferably 10.0 mm or less, more preferably 5.0 mm or less. When the thickness is less than the above lower limit, the continuous cooling sensation effect of the pile tends to decrease. If the upper limit is exceeded, the woven or knitted fabric becomes very heavy and the handleability is reduced, or it becomes difficult to use for hanging items such as towels. The change in thickness due to the pressure difference when the thickness measurement pressure was changed to 0.7 kPa and 89 kPa (thickness at a pressure of 0.7 kPa / thickness at a pressure of 89 kPa = thickness deformation) is the weight applied. It can be used as a substitute measure for the degree of deformation of the pile when it is set. When the pile is appropriately deformed, the pile that comes into contact with the body when sleeping is bent along the skin, and the area of contact with the skin is improved, so that the cold feeling of contact is likely to increase. The thickness deformation is measured using two types of dial thickness gauges shown in Examples, and the pile thickness deformation is preferably 1.3 or more, more preferably 1.4 or more. On the other hand, the upper limit of the thickness deformation is preferably 2.5 or less, more preferably 2.2 or less. If the degree of thickness deformation is less than the above range, the fibers cannot bend along the skin when a load is applied, and the contact cooling sensation tends to be reduced. If it exceeds the above range, the pile woven or knitted fabric cannot follow the skin and the sustained cooling sensation tends to decrease, or the sleeping comfort decreases.

  The knitting of a textile product using the composite yarn of the present invention, for example, a fabric constituting an undergarment may be performed by using a general knitting machine. In the case of circular knitting, the gauge is preferably 28 G or more, and 32 G or more. Is more preferable for knitting a denser knitted fabric. It is preferably 60 G or less from the viewpoint of productivity, texture, and physical properties. Similarly, in the case of warp knitting, 28G or more is preferable, and 32G or more is more preferable. The number of reeds is preferably three or less, and more preferably two.

  In the dyeing process of a textile product using the composite yarn of the present invention, for example, a fabric constituting an undergarment, processing is performed in the order of presetting, scouring, dyeing, finishing, and final setting. As a processing machine used for scouring and dyeing, a machine having low tension, such as a generally used liquid jet dyeing machine, or a continuous scouring machine is preferable.

  Before dyeing, a step of increasing whiteness by bleaching and bleaching may be added. Dyes, dyeing assistants, and finishing agents can be arbitrarily selected from those generally used for dyeing synthetic fibers and / or cellulose fibers. Before dyeing, a treatment such as an alkali treatment for improving the dyeability of the regenerated cellulosic fiber or an alkali weight reduction treatment for polyester fiber for improving the texture may be performed. It is also possible to use a water-absorbing agent and a softening agent together in the dyeing bath, or to pad these after soaping. The use of a softener is effective for enhancing the feel and texture. At the time of the final setting, it is good to perform the tentering to make the fabric flat.

The basis weight of a textile product using the composite yarn of the present invention, for example, a fabric constituting an undergarment is not particularly limited, but is preferably 120 to 700 g / m ² , and more preferably 180 to 600 g / m ² . More preferably, it is 190 to 550 g / m ² . If the basis weight is smaller than the above range, the cooling sensation persistence tends to decrease. If it is larger than the above range, the production cost becomes high, and in the case of underwear, it is heavy and the wearing comfort tends to deteriorate.

  When the knitted fabric of the present invention is a sinker pile knitted fabric, the number of courses / inch after dyeing and finishing may be 20 or more and 80 or less, and the number of wales / inch may be 10 or more and 70 or less. If the number of courses and the number of wales exceed the above ranges, knitting becomes difficult and productivity tends to decrease. When the number of courses and the number of wales are less than the above ranges, the contact area of the composite yarn with the skin is reduced, and the cooling sensation of contact is likely to be reduced.

  When the knitted fabric of the present invention is, for example, a sheet of jersey, the number of courses / inch after dyeing and finishing may be 40 or more and 90 or less, and the number of wales / inch may be 30 or more and 70 or less. If the number of courses and the number of wales exceed the above ranges, knitting becomes difficult and productivity tends to decrease. When the number of courses and the number of wales are less than the above ranges, the contact area of the composite yarn with the skin is reduced, and the cooling sensation of contact is likely to be reduced.

Since the woven or knitted fabric using the composite yarn of the present invention is configured as described above, the instantaneous heat flow after a contact time of 10 seconds at 20 ° C. to 30 ° C. is 0.028 W / cm ² or more. 030 W / cm ² or more can be achieved. When the instantaneous heat flow rate is less than the above range, it is difficult to feel the sustainability of the contact cooling sensation. The higher the instantaneous heat flow, the better, but it is difficult to make the maximum value obtained from the woven or knitted fabric larger than 0.500 W / cm ² .

The woven or knitted fabric using the composite yarn of the present invention achieves an instantaneous heat flow of 30 to 250 W / cm ² after contact time of 30 seconds at 20 ° C. to 30 ° C., and furthermore, 140 to 220 W / cm ^2. Can be. If the instantaneous heat flow rate is less than the above range, it is difficult to obtain a cooling sensation, and if the instantaneous heat flow rate exceeds the above range, the dough tends to be too heavy. This heat flow rate is an integrated value for 30 seconds (measurement 3000 times) with a measurement interval of 0.01 second.

  The woven or knitted fabric using the composite yarn of the present invention can achieve an adhesion of 0.6 ml or more. In a preferred embodiment of the woven or knitted fabric, 1.0 ml or more can be achieved. The adhesion can be measured by the method described in Examples. If the adhesiveness is less than the above range, a sticky feeling is likely to appear when sweating.

  The woven / knitted fabric using the composite yarn of the present invention is suitable for bedding applications such as futon side sheets, sheets, floor pads, and towelets that require sweat treatment, sports underwear, underwear, etc., but has high thermal conductivity and high heat conductivity. Since there are many fibers that are both compatible in strength, it can be applied to various protective articles, industrial materials, etc. by utilizing its high moisture absorption / water absorption / heat transfer characteristics.

  Hereinafter, the present invention will be described specifically with reference to Examples, but the present invention is not limited to these Examples. In addition, about the measuring method and evaluation method of each characteristic in this invention, it depends on the following method.

<Number of fluff of spun yarn>
The number of fluffs of the spun yarn was measured using an F-index tester manufactured by Shikibo Co., Ltd. The measurement yarn length was 10 m, and the number of fluffs of 1 mm or more and the number of fluffs of 3 mm or more were measured.

<Moisture percentage>
The moisture content of the yarn was measured according to JIS L1095: 2010 9.2 moisture content. The moisture content of the woven or knitted fabric was measured according to the method of JIS L1096: 2010 8.10 moisture content.

<Thermal conductivity of fiber>
Thermal conductivity was measured by a steady-state heat flow method in a system having a temperature controller with a helium refrigerator. The length of the sample fiber was about 25 mm, and the fiber bundle was a bundle of about 1,000 single fibers.
Next, both ends of the sample fiber were fixed with Stycast GT and set on a sample table. An Au-chromel thermocouple was used for temperature measurement. A 1 kΩ resistor was used as a heater, and this was bonded to the end of the fiber bundle with a varnish. The measurement temperature range was 27 ° C. The measurement was performed in a vacuum of 10 ⁻³ Pa in order to maintain heat insulation. Note that the measurement was started after elapse of 24 hours in a vacuum state of 10 ⁻³ Pa in order to dry the sample.
The measurement of the thermal conductivity was performed by supplying a constant current to the heater so that the temperature difference ΔT between the two points L was 1K. This is shown in FIG. Here, assuming that the cross-sectional area of the fiber bundle is S, the distance between the thermocouples is L, the amount of heat provided by the heater is Q, and the temperature difference between the thermocouples is ΔT, the required thermal conductivity κ is calculated by the following equation. be able to.
κ (W / mK) = (Q / ΔT) × (L / S)

<Thickness deformation>
The thickness deformation was measured using a model G-1A (measuring force 1.8 N, measuring element area 0.2 cm ² , measuring pressure 89 kPa) and a model FFG-11 (a dial thickness gauge 0.01 mm type manufactured by Ozaki Corporation). Two constant-pressure thickness measuring machines having a measuring force of 0.35 N, a measuring element area of 5 cm ² , and a measuring pressure of 0.7 kPa) are used. The measurement sample is cut into a size of 10 cm square, and is conditioned for one day in an atmosphere of a standard condition of 20 ° C. and 65% RH. The thickness is measured at five different locations per sample using the above thickness measuring device (mm), and the average value is calculated and rounded to two decimal places. The thickness of the same sample is measured first by FFG-11 (measured value 1), then measured by G-1A (measured value 2), and the thickness deformation is determined by the following equation.
Thickness deformation = (measured value 1) / (measured value 2)

<Instantaneous heat flux (instantaneous heat flux after 10 seconds and integrated value for 30 seconds)>
The measurement is performed using Thermolab II manufactured by Kato Tech. Also called Qmax, it follows the measurement manual manufactured by Kato Tech. Place the fabric whose humidity and temperature have been adjusted to 20 ° C and 65% RH on a styrofoam insulation with the skin side facing up, and measure it by contacting the hot plate and temperature sensor heated to 30 ° C with the skin side. I do. The measurement is continuously performed at a measurement interval of 0.01 second, and the instantaneous heat flow after 10 seconds is measured. In addition, the integrated value of the instantaneous heat flux (W / cm ² · 10 ° C.) for 30 seconds (3000 measurements) from the start of the contact is calculated.

<Adhesion>
Adhesion was evaluated as an evaluation of stickiness when the knitted fabric was wet. Place a 5 cm x 5 cm sample on the acrylic plate and add an additional 0.4 ml of water. Thereafter, using a compression tester (KES-G5 (manufactured by Kato Tech)), after applying a load of 500 mN, the adhesive force (resistance) when separated at a speed of 0.2 cm / sec is measured. Thereafter, the procedure of applying 0.1 ml of water and measuring the adhesion is repeated. The end of the measurement is when the adhesion increases sharply when water is added. The total water content (ml) applied at this time is defined as the value of the adhesion. This rapid increase is defined as a time when the adhesive force is increased by 1.0 gf or more by applying 0.1 ml. If the adhesion does not suddenly increase even when 2.5 ml of the total water content is added, the test is terminated there and the judgment is judged as “excellent”. In the present invention, if the adhesion is 0.8 ml or more, it is judged to be acceptable.

<Evaluation of sleeping comfort (stickiness)>
Using the woven / knitted fabric sample as a ground surface side, a pad having a width of 100 cm and a length of 200 cm was prepared. A plain weave made of a spun yarn of polyester number 60 / cotton 45 and an English count of number 40 for the background is used as the back side, and the batting is sandwiched with 100 g / m ² of polyester resin cotton and has a corrugated pattern with another needle quilting machine. The quilt was carried out, and the hem was attached to the four sides using the same fabric as the lining. The pad was attached to a single-size futon. The atmosphere was adjusted to a high temperature and high humidity of 32 ° C. × 85% RH in an environmental test room, and the sleeping comfort (stickiness) when a 25-year-old man was lying on the pad for 30 minutes was evaluated. ◎: no stickiness was observed, を: little stickiness, Δ: sticky, and x: extremely sticky and unpleasant.

Example 1
Modal (effective fiber length: 38 mm, single yarn fineness: 1.0 dtex) as a cellulose short fiber was blended and cotton-blended using an OHARA blender, and a card sliver was made using a card machine manufactured by Ishikawa Seisakusho. After the card sliver was passed through a comber, the card sliver was passed twice through a drawing machine made of a weaving machine to obtain a sliver of 400 gren / 6 yd. Further, it passed through a roving machine manufactured by Toyoda Automatic Loom to produce a roving of 140 gel / 15 yd. Next, when the roving yarn was drafted about 28 times by a spinning machine and came out of the front roller (position of yarn path B in FIG. 2), ultrahigh molecular weight polyethylene (Izanus (registered trademark) manufactured by Toyobo Co., Ltd.) was used as a long fiber. ) (Type SK71)) Twisted with 220 dtex (T) and 192 filament (f) to prepare a 13th spun twisted yarn 1 with an English number. The measured twist coefficient of this spun yarn was 3.7. Table 1 shows the properties of the finished spun twisted yarn 1.

Example 2
A spinning twisted yarn 2 was produced in the same manner as in Example 1 except that Izanas (registered trademark) manufactured by Toyobo Co., Ltd. was changed to high-molecular-weight polyethylene fiber (Tsunuga (registered trademark) manufactured by Toyobo Co., Ltd.) 220T, 176f. did. Table 1 shows the properties of the finished spun twisted yarn 2.

Example 3
The procedure was the same as in Example 1 except that Izanas (registered trademark) manufactured by Toyobo Co., Ltd. was changed to polyparaphenylenebenzoxazole (PBO) fiber (Zylon (registered trademark) (Toyobo Co., Ltd.) (type AS)) 278T, 166f. The spinning twisted yarn 3 was produced. Table 1 shows the properties of the finished spun twisted yarn 3.

Example 4
Modal (effective fiber length: 38 mm, fineness: 1.0 dtex) as a cellulose short fiber was blended and cotton-blended using an OHARA blender, and a card sliver was produced using a card machine manufactured by Ishikawa Seisakusho. After the card sliver was passed through a comber, the card sliver was passed twice through a drawing machine made of a weaving machine to obtain a sliver of 400 gren / 6 yd. Further, it passed through a roving machine manufactured by Toyoda Automatic Loom to produce a roving of 140 gel / 15 yd. Then, the roving yarn was drafted about 28 times with a spinning machine to produce a 25th spun yarn with an English count. The measured twist coefficient of the spun yarn was 3.5. This modal spun yarn and ultra-high molecular weight polyethylene fiber (Izanas (registered trademark) type SK71, manufactured by Toyobo Co., Ltd.) 220T, 192f are twisted at 500 T / m in the same twisting direction as the spun yarn, and are subjected to an English count of 13. The number 1 twisted yarn 1 was produced. Table 1 shows the properties of the completed twisted yarn 1.

Example 5
Modal (effective fiber length: 38 mm, fineness: 1.0 dtex) as a cellulose short fiber was blended and cotton-blended using an OHARA blender, and a card sliver was produced using a card machine manufactured by Ishikawa Seisakusho. After the card sliver was put on a comber, the card sliver was passed twice through a drawing machine made of a weaving machine to obtain a sliver of 200 gels / 6 yd. Further, it passed through a roving machine manufactured by Toyoda Automatic Loom to produce a roving of 80 gel / 15 yd. Then, the roving was drafted about 51 times with a spinning machine to produce a spun yarn of 80th in English number. The measured twist coefficient of the spun yarn was 3.5. This modal spun yarn and high molecular weight polyethylene fiber (Izanas (registered trademark) type SK71, manufactured by Toyobo Co., Ltd.) 220T and 192f are twisted with a Z twist of 500 T / m to form a No. 20 twisted yarn 2 with an English count. Produced. Table 1 shows the properties of the completed twisted yarn 2.

Example 6
Spinning intertwisted yarn 4 was produced in the same manner as in Example 1 except that Izanas (registered trademark) manufactured by Toyobo Co., Ltd. was changed to cupra filaments 167T and 90f (two 84T45f were aligned). Table 1 shows the properties of the finished spun twisted yarn 4.

Comparative Example 1
A spinning twisted yarn 5 was produced in the same manner as in Example 1 except that Izanas (registered trademark) manufactured by Toyobo Co., Ltd. was changed to polyester filaments 167T and 96f. Table 1 shows the properties of the finished spun twisted yarn 5.

Comparative Example 2
Twisted yarn 1 was produced by twisting Izanas (registered trademark) (type SK71) 440T, 390f manufactured by Toyobo Co., Ltd. with a double twister at 300 T / m with Z twist. Table 1 shows the properties of the finished twisted yarn 1.

Example 7
The finished spinning twisted yarn 1 was knitted with a single knitting machine (Fukuhara Kikai) having a diameter of 30 inch-20G. After the completed knitted fabric is opened, continuous scouring is performed, and rayon is dyed with a reactive dye to light-colored saxophone using a liquid flow dyeing machine NS type manufactured by Hisaka Seisakusho. Finishing treatment was performed. Table 1 shows details of the knitted fabric and evaluation results.

Example 8
The finished spun intertwisted yarn 2 was knitted under the same conditions as in Example 7 to knit a sheet of paper, and dyed in the same manner as in Example 7 to obtain a finished fabric. Table 1 shows details of the knitted fabric and evaluation results.

Example 9
The finished spun intertwisted yarn 3 was knitted under the same conditions as in Example 7 to knit a sheet. This green fabric was dyed in the same manner as in Example 7 to obtain a finished fabric. Table 1 shows details of the knitted fabric and evaluation results.

Example 10
The finished twisted yarn 1 was knitted under the same conditions as in Example 7 to knit a sheet of India. This green fabric was dyed in the same manner as in Example 7 to obtain a finished fabric. Table 1 shows details of the knitted fabric and evaluation results.

Example 11
A 3/1 twill woven fabric was produced using the completed twisted yarn 2 for the process. The weaving conditions were as follows: Reed count (whale size) No. 50, number of draw-in four (five ears), warp yarn 6,250, prepared with a reed width of 118 cm, weaving with an air jet loom, Was 137 lines / inch and the weft density was 51 lines / inch. After performing continuous scouring and tentering set of this woven fabric, it was directly dyed into light-colored sax with a dye by a liquid jet dyeing machine, and then the tentering set was performed by applying a finishing agent with a tenter. Table 1 shows details of the woven fabric and the evaluation results.

Example 12
Sinker piles were prepared using polyester false twisted yarns 110T and 48f as ground yarns and spinning twisted yarns 1 as pile yarns. As a knitting condition, the pile height of the sinker was set to 2.2 mm using a 30-inch 16-gauge sinker pile knitting machine. The greige fabric was dyed in a light-colored saxophone with a scouring / reactive dye by a jet dyeing machine, and then opened to give a water-absorbing agent, followed by drying and setting at 120 ° C. to obtain a knitted fabric. Table 1 shows details of the knitted fabric and evaluation results.

Example 13
A sinker pile was prepared in the same manner as in Example 12, except that the pile yarn was changed to the spinning twisted yarn 4, and the pile height was changed to 1.6 mm. As a knitting condition, the pile height of the sinker was set to 2.2 mm using a 30-inch 16-gauge sinker pile knitting machine. The greige fabric was dyed in a light-colored saxophone with a scouring / reactive dye with a liquid jet dyeing machine, and then opened to give a water-absorbing agent, followed by drying and setting at 150 ° C. to obtain a knitted fabric. Table 1 shows details of the knitted fabric and evaluation results.

Comparative Example 3
The knitted fabric was knitted under the same conditions as in Example 7, except that the spun twisted yarn 1 was changed to polyester filaments 167T, 72f (round cross section semi-dal) (spinned twisted yarn 5). The finished greige was dyed into a saxophone with a disperse dye through a normal polyester circular knitting dyeing process, and was subjected to a water-absorbing finish to give a final fabric. Table 1 shows details of the knitted fabric and evaluation results.

Comparative Example 4
The knitted fabric was knitted under the same conditions as in Example 7 except that the finished twisted yarn 1 was used in place of the spinned intertwisted yarn 1. After the greige was opened and continuously refined, a water-absorbing agent was applied, and then a knitted fabric dried and set at 120 ° C. was obtained. Table 1 shows details of the knitted fabric and evaluation results.

  As is clear from the evaluation results in Table 1, the woven or knitted fabric using the yarn outside the range of the present invention is inferior in hygroscopicity, has no persistent contact cold feeling, becomes sticky and uncomfortable when sweating, The woven or knitted fabric using the composite yarn within the scope of the present invention has high moisture absorption and contact cooling sensation, has a persistent cooling sensation from the beginning of wearing, and is considered to be less likely to stick when sweating.

  This is clear from the comparison between Examples 1 and 11 and Comparative Example 4 in FIG. That is, the yarn of Comparative Example 4 out of the range of the present invention can provide instantaneous contact cooling sensation, but then sticks to the skin when sweating to cause stickiness, whereas the yarn of Comparative Example 4 falls within the range of the present invention. It is considered that the yarn of Example 1 and the knitted fabric of Example 11 can continuously feel cold contact sensation, can suppress stickiness by absorbing moisture even when sweating, and are considered to have high comfort.

  The textile product of the present invention, for example, underwear, suppresses temperature rise in clothes while increasing heat transfer and thermal conductivity due to contact when worn, and simultaneously suppresses moisture rise in clothes by effectively absorbing insensitive excretion. By doing so, it is possible to provide summer underwear that has a long period of time in which the user feels comfortable from the beginning of wearing to the time of undressing. The undergarment of the present invention is more thermophysiologically comfortable when worn than when not worn.

REFERENCE SIGNS LIST 1 pan 2 guide 3 tension device 4 guide 5 bobbin 6 guide 7 back roller 8 second roller 9 front roller 10 fiber bundle A yarn path A
B thread path B
11 Refrigerator cooling head 12 Sample table 13 Thermocouple 14 Sample fiber 15 Adhesive 16 Heater 17 Fiber measurement distance V Power supply

That is, the present invention has the following configurations (1) to ( 2 ).
(1) I pile woven or knitted der using multiple doubling the pile, the composite yarn is composed of filaments and cellulosic staple fibers having a thermal conductivity coefficient of more than 2.2 W / mK, English type count 5-40 quickest Wherein the water content of the yarn at 20 ° C. and 65% RH is 2.5 to 12%, and the number of fluffs having a length of 3 mm or more present on the surface of the yarn is 20 to 200 per 10 m of yarn length. The thickness and the thickness of the pile woven knitted fabric at a pressure of 0.7 kPa / thickness at a pressure of 89 kPa are 1.3 to 2.5, and the moment after 10 seconds at 20 ° C. to 30 ° C. A pile woven or knitted fabric having a heat transfer amount of 0.028 W / cm ² or more.
(2) The filament according to (1), wherein the filament is at least one fiber selected from the group consisting of high molecular weight polyethylene fiber, aramid fiber, polyarylate fiber, polybenzazole fiber, and carbon fiber. Pile knitted fabric .

Claims (4)

  A composite yarn composed of a filament having a thermal conductivity of 2.2 W / mK or more and a cellulose short fiber and having an English number of 5 to 40, wherein the yarn has a water content of 2.5% at 20 ° C. and 65% RH. A composite yarn, wherein the number of fluffs having a length of 3 mm or more present on the surface of the yarn is 20 to 200 per 10 m of yarn length.   The composite yarn according to claim 1, wherein the filament is at least one kind of fiber selected from the group consisting of high molecular weight polyethylene fiber, aramid fiber, polyarylate fiber, polybenzazole fiber, and carbon fiber. . The composite yarn according to claim 1 or 2, containing 30% by weight or more, having a basis weight of 120 to 700 g / m ² , and having an instantaneous heat transfer amount of 0.028 W / cm ² or more at 20 ° C to 30 ° C for 10 seconds, A woven or knitted fabric having an adhesion of 0.8 ml or more. A pile woven or knitted fabric using the composite yarn according to claim 1 or 2 for a pile, wherein the thickness at a pressure of 0.7 kPa / the thickness at a pressure of 89 kPa is 1.3 to 2.5. A pile woven or knitted fabric characterized in that the instantaneous heat transfer for 10 seconds at 20 ° C to 30 ° C is 0.028 W / cm ² or more.