JP2009197341A - Elastic knitted fabric - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a comfortable elastic knitted fabric having a reduced weight and excellent moisture retaining property in spite of having a dry touch. <P>SOLUTION: The elastic knitted fabric is a fabric formed of a knitted fabric having stretchability using an inelastic fiber yarn and an elastic fiber yarn. The inelastic fiber is a polyamide fiber which has a single fiber having a tri-lobal cross-section having a modification degree not less than 2.5, and has a total fineness not more than 44 dtex. The elastic knitted fabric has a water retention rate not less than 35%, a ratio of basis weight (g/m<SP>2</SP>) to thickness (mm) not more than 200 (g/m<SP>2</SP>/mm), and a difference in contact warm-cold sensitivity between a dry state and a wet state of not more than 0.55 W/cm<SP>2</SP>. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a comfortable elastic knitted fabric that is dry touch and excellent in lightness and moisture retention. More specifically, the present invention relates to an elastic warp knitted fabric that is comfortable as an inner or sports material.

  2. Description of the Related Art Conventionally, fabrics made of elastic fibers, particularly polyurethane fibers and non-elastic fibers, having excellent stretch properties have been used in the clothing field, especially for clothing applications that fit bodies such as sports and innerwear. In such materials, various methods have been proposed for improving the comfort at the time of wearing in order to quickly absorb and diffuse sweat.

  For example, an elastic knitted fabric in which cotton and elastic fibers are knitted to improve hygroscopicity, or an elastic knitted fabric in which flat cross-sectional yarns of polyester and elastic fibers are knitted to improve water absorption and quick drying properties. However, the former elastic knitted fabric using cotton is excellent in water retention and can absorb sweat, but has a problem that the surface of the fabric is sticky and comfort is impaired. Furthermore, the yarn itself of the cotton itself is weak, and it is necessary to make the yarn thicker to some extent in order to impart strength sufficient to withstand the knitting. Therefore, there is a problem that the fabric is inevitably heavy.

In addition, a water-absorbing quick-drying knitted fabric with a low stuffiness has been proposed in which a spun yarn blended with 20% or more of polyester and modified cellulose with improved hygroscopicity is used to adjust the moisture content to 7% or more. (For example, refer to Patent Document 1). However, although the water-absorbing quick-drying knitted fabric obtained by this method has a hygroscopic property, there is a problem that the feeling of stickiness on the fabric surface when wet is still large. Furthermore, in order to maintain the yarn strength of the spun yarn, the fineness has to be made thicker than that of the filament, and the problem of becoming heavy when made into a fabric has not been solved.
JP 2005-220448 A

  In addition, in an elastic knitted fabric using a flat cross-sectional yarn of polyester, a little sweat is absorbed and diffused, but the polyester itself does not have water retention, so the fabric becomes pattered. Therefore, a feeling of wearing is bad and it is insufficient in terms of comfort.

On the other hand, by using a polyester fiber whose cross-sectional shape is made C-shaped and the surface is hydrophilized with a hydrophilized material, a concave portion is formed continuously in the longitudinal direction of the yarn, and the capillary phenomenon of the concave portion is reduced. A technique for utilizing it to exhibit excellent water retention and water diffusibility has been studied (see, for example, Patent Document 2). However, the polyester fiber having a C-shaped cross section has a slightly improved water retention as compared with the polyester fiber having a round cross section, but the polyester fiber has a low official moisture content and a large contact area when wet. For this reason, the difference in touch between wet and dry is large, which is insufficient in terms of comfort.
Japanese Patent Laid-Open No. 2007-100200

In addition, a technique using a polyester fiber having a cup-shaped yarn cross-section has been studied. However, since the contact area with the skin of the polyester fiber having this cup-shaped cross section varies depending on the angle, the contact area increases depending on the location. For this reason, the difference in touch between wet and dry is large, which is insufficient in terms of comfort, and has a problem in terms of quality.
JP 2007-280232 A

  An object of the present invention is to provide a comfortable elastic knitted fabric which is dry touch and excellent in light weight and moisture retention. In addition, we provide comfortable elastic warp knitted fabrics as inner and sports materials.

The elastic knitted fabric of the present invention capable of solving the above-described problems has the following configuration.
That is, the first invention is a fabric made of an elastic knitted fabric having stretch properties using yarns of non-elastic fibers and yarns of elastic fibers, and the non-elastic fibers are single fibers. The cross-sectional shape is a trilobal type with an irregularity degree of 2.5 or more, and is a polyamide fiber having a total fineness of 44 dtex or less. The elastic knitted fabric has a water retention rate of 35% or more and a weight per unit area (g) (g / M ² ) ratio is 200 (g / m ² / mm) or less, and the difference in thermal contact feeling between the dry state and the wet state is 0.55 W / cm ² or less. Elastic knitted fabric.

  A second invention is the elastic knitted fabric according to the first invention, wherein the single yarn fineness of the polyamide fiber is 2 dtex or less. A third invention is the elastic knitted fabric according to the first or second invention, wherein the polyamide fiber is made of nylon 6 having a relative viscosity of 3.0 or more.

  Further, the third invention is the elastic knitted fabric according to any one of the first to third inventions, wherein the elastic knitted fabric is a warp knitted fabric of 28 gauge or more.

  The elastic knitted fabric of the present invention is made of a fabric having stretch properties using yarns of inelastic fibers and yarns of elastic fibers, and the non-elastic yarn has a cross-sectional shape of a single fiber having a degree of atypical degree of 2.5 or more. Since a trilobal polyamide fiber is used, there are many gaps between single yarns and the contact area when contacting with the skin is also reduced. Therefore, it is excellent in lightness and water retention, and the stickiness is reduced even when the fabric is wet, and the difference between the contact thermal sensation of the fabric in the dry state and the wet state is reduced. Further, by setting the total fineness of the polyamide fiber to 44 dtex or less, the fabric weight per unit thickness is also reduced, and the weight is further reduced. As a result, it is possible to obtain a comfortable elastic knitted fabric excellent in light weight and moisture retention while being dry touch.

Hereinafter, embodiments of the fabric made of the elastic knitted fabric of the present invention will be described.
The elastic knitted fabric of the present invention is made of a fabric having stretch properties using yarns of non-elastic fibers and yarns of elastic fibers.

(Non-elastic fiber)
The non-elastic fiber yarn is composed of a trilobal polyamide fiber in which the cross-sectional shape of a single filament of a multifilament yarn is an irregularity degree of 2.5 or more. Here, the trilobal section refers to a section whose section consists of three leaf parts, for example,
1203395920781_0
The cross-sectional shape of the single fiber 1 which consists of three leaf parts is said. The degree of atypicality is
1203395920781_1
The ratio of the diameter of the circumscribed circle 3 of the three leaf portions 2 to the diameter of the inscribed circle 4 at the center of the cross section is expressed as follows. The diameter of the circumscribed circle 3 is G, and the diameter of the inscribed circle 4 is N. Then, it is represented by G / N.

  The cross-sectional shape of this single fiber is a three-leaf type polyamide fiber having a degree of atypical degree of 2.5 or more, and the voids that appear between the single yarn constituting the multifilament and the single yarn This improves water retention. Moreover, since a space | gap can be provided efficiently between a single yarn and a single yarn, the ratio (weight scale) of the fabric weight with respect to the thickness of a fabric can be reduced, and a lightweight feeling is obtained. Furthermore, due to the unevenness of the three-leaf cross section, when the elastic knitted fabric is worn, it is possible to reduce the contact area of the elastic knitted fabric when it comes into contact with the skin. Become.

  The upper limit of the degree of atypical cross section of the single fiber of the polyamide fiber yarn is preferably 4.0 from the viewpoint of spinning operability such as yarn breakage and the uniformity of the cross section.

  Moreover, in this invention, the cross-sectional shape of the single fiber which comprises the thread | yarn of an inelastic fiber is a trilobal type. When the cross-sectional shape of the single fiber is round, triangular or flat, the contact area with the skin increases when worn, making it easier to feel a sticky feeling when the fabric (elastic knitted fabric) gets wet. Inferior to sex. In addition, when the cross-sectional shape of the single fiber is a two-leaf type, the appearance differs depending on the direction, so there is a problem in the quality when it is made into a fabric. Moreover, when the cross-sectional shape of the single fiber is a four-leaf type, it is difficult to increase the degree of variation. For this reason, it is not possible to develop a sufficient gap between the single yarn and the single yarn, resulting in a decrease in water retention.

  In the present invention, the total fineness of the polyamide fiber is 44 dtex or less, preferably 35 dtex or less, from the viewpoint of the lightness of the fabric when used as an inner or sports material. The lower limit of the total fineness of the polyamide fiber is not particularly limited as long as it does not interfere with knitting, but is preferably 15 dtex or more in view of physical properties such as yarn strength.

  The single yarn fineness of the polyamide fiber is preferably 2 dtex or less from the viewpoint of comfort when the fabric is softened and is used as a clothing material. The finer the single yarn fineness, the softer the fabric, but on the other hand, the pilling property and snag property become worse and the strength of the yarn also decreases. Therefore, practically, it is preferable that the lower limit of the single yarn fineness is 0.5 dtex.

  The polyamide fiber is preferably made of nylon 6 having a relative viscosity of 3.0 or more. By setting the relative viscosity of the polyamide fiber to 3.0 or more, the yarn whose cross-sectional shape of the single yarn is made trilobal with a nozzle nozzle at the time of spinning and the degree of irregularity is controlled to 2.5 or more is more stable. Obtainable.

(Elastic fiber)
When knitting a fabric made of the elastic knitted fabric of the present invention, an elastic fiber is used as a yarn in addition to the non-elastic fiber.

  As the yarn of the elastic fiber constituting the elastic knitted fabric of the present invention, an elastic yarn made of polyurethane fiber, polytetramethylene terephthalate (PTT) fiber, or cross-linked polyolefin elastic fiber is suitable.

  The polyurethane fiber is an elastic fiber obtained by spinning a polymer composition mainly composed of polyurethane. As the polyurethane, for example, a known polyurethane such as polyether-based, polyester-based, and polycarbonate-based can be used. The polyurethane can be obtained by reacting polyisocyanate, polymer diol, and optionally a low molecular polyfunctional active hydrogen compound.

  Examples of the polyisocyanate include 4,4′-diphenylmethane diisocyanate, 1,4-phenylene diisocyanate, 2,4-tolylene diisocyanate, 2,6-tolylene diisocyanate, naphthalene diisocyanate, hexamethylene diisocyanate, and 1,4-cyclohexane. One kind of diisocyanate, 4,4′-dicyclohexylmethane diisocyanate, xylylene diisocyanate or a mixture thereof can be used. Among these, 4,4′-diphenylmethane diisocyanate is preferable.

  As the polymer diol, a substantially linear polymer having hydroxyl groups at both ends and having a number average molecular weight of 600 to 7000 is used. Examples of such polymer diols include polyether polyols such as polytetramethylene ether glycol, polypropylene ether glycol, polyethylene ether glycol, and polypentamethylene ether glycol, copoly (tetramethylene-neopentylene) ether diol, and copoly (tetramethylene- 2-methyl butylene) ether diol, copoly (tetramethylene-2,3-dimethylbutylene) ether diol, copoly (tetramethylene-2,2-dimethylbutylene) ether diol, etc. The copolyether polyol containing is mentioned.

  In addition, as polymer diols, 2 such as adipic acid, sebacic acid, maleic acid, itaconic acid, mazeleic acid, malonic acid, succinic acid, glutaric acid, suberic acid, dodecanedicarboxylic acid, β-methyladipic acid, hexahydroterephthalic acid, etc. One or a mixture of two or more basic acids, and ethylene glycol, 1,2-propylene glycol, 1,4-butanediol, 1,6-hexanediol, neopentyl glycol, 1,4-dimethylolcyclohexane, etc. Polyester polyols obtained from one or a mixture of two or more glycols, or any polyol such as polyether ester diol, polylactone diol, and polycarbonate diol can also be used.

  The cross-linked polyolefin-based elastic fiber is a fiber obtained by polymerizing an olefin-based monomer obtained by performing a cross-linking process on a substantially linear olefin. For example, low-density polyethylene copolymerized with α-olefin and elastic fibers described in JP-A-8-509530 correspond to this. Examples of the crosslinking treatment method include chemical crosslinking using a radical initiator and a coupling agent, and a method of crosslinking by irradiating energy rays. Further, in consideration of the stability after becoming a product, crosslinking by irradiation with energy rays is preferable. The cross-linked polyolefin-based elastic fiber is obtained by winding up as a monofilament or multifilament by a usual melt spinning method and performing a cross-linking treatment.

(Elastic knitted fabric)
The elastic knitted fabric of the present invention is made of a fabric having stretch properties using yarns of non-elastic fibers and yarns of elastic fibers. This stretchability can be controlled by the type of elastic fiber and the knitting conditions, and a comfortable fit can be obtained when worn. The elongation rate is preferably 50% or more, more preferably 80% or more, and particularly preferably 100% or more. Moreover, in order to be excellent in wearability at the time of use and not to cause problems such as appearance (warai), the elongation recovery rate is preferably 80% or more, more preferably 85% or more, particularly Preferably it is 90% or more.

  The stretch direction of the fabric may be either the longitudinal direction or the lateral direction, but the effect is further clarified by using two directions. In the present invention, the non-elastic fiber and the elastic fiber yarn are used, the first polyamide (front) is made of a specific polyamide fiber yarn made of the non-elastic fiber, and the second cord (back) is elastic. It is preferable to knit by a two-way method using fiber yarns.

The elastic knitted fabric of the present invention knitted by such a method has a water retention rate of 35% or more and a basis weight (g / m ² ) ratio of thickness (mm) of 200 (g / m ² / mm) or less. And the difference of the contact thermal sensation between the dry state and the wet state is 0.55 W / cm ² or less.

  The elastic knitted fabric of the present invention has a water retention rate of 35% or more from the viewpoint of sufficiently absorbing moisture between the single fibers and improving skin separation. Moreover, it is preferable to make the upper limit of a water retention rate into 85% from a viewpoint which makes the drying property of cloth | dough close to practical use to some extent. In order to increase the water retention rate of the elastic knitted fabric to 35% or more, as described above, the cross-sectional shape of the polyamide fiber of the non-elastic yarn is set to a trilobal type, and the degree of irregularity is set to 2.5 or more. In order to set the polymorphism of the single yarn of the polyamide fiber to 2.5 or more, it is preferable to use nylon 6 having a relative viscosity of 3.0 or more in addition to designing with a nozzle nozzle at the time of spinning.

The fabric composed of the elastic knitted fabric of the present invention has a basis weight (g / m ² ) ratio to unit thickness (mm) of 200 (g / m ² / mm) or less from the viewpoint of lightweight of the fabric when worn. Preferably, it is 190 (g / m ² / mm) or less. In order to reduce the weight ratio of the basis weight (g / m ² ) to the unit thickness (mm) to 200 (g / m ² / mm) or less while maintaining the water retention rate of the elastic knitted fabric at 35% or more It is effective to set the total fineness of the polyamide fiber, which is an inelastic yarn, to 44 dtex or less, and to set the irregularity of the single fiber having a trilobal cross section to 2.5 or more. In addition, even when the total fineness of the polyamide fiber is 44 dtex or less and the cross section of the single fiber is hollow or when the atypical degree is less than 2.5, the basis weight / thickness ratio is 200 (g / m ² / mm). Although it is possible to make it below, in this case, it becomes difficult to make the water retention of the elastic knitted fabric 35% or more.

In addition, the fabric made of the elastic knitted fabric of the present invention has a dry state in order to reduce the difference in the feeling of contact with the skin when worn in a dry state and a wet state, and to maintain comfort during wearing. the difference in the contact thermal sensation of wet conditions 0.55 W / cm ² or less, preferably designed to be 0.50 W / cm ² or less.

  The contact thermal sensation indicates the touch on the contact surface with the skin when the fabric is touched. The smaller the value, the warmer the feeling, and the larger the value, the cooler the feeling. When the contact thermal sensation qmax exceeds 0.05, discomfort occurs due to momentary discomfort when worn. This physical property of contact thermal sensation is not a special parameter, but a physical property commonly used by those skilled in the art. In order to reduce the difference between the contact thermal sensation qmax in the dry state and the wet state, for example, the contact surface where the fabric and the skin are in contact, that is, the outer surface side of the fabric is made uneven to reduce the contact area. It is preferable to improve skin releasability. Specifically, it is effective to make the cross-sectional shape of a single yarn of polyamide fiber, which is an inelastic fiber, into a trilobal type.

That is, in a fabric made of an elastic knitted fabric having stretch properties using the yarn of the non-elastic fiber and the yarn of the elastic fiber of the present invention, the water retention is 35% or more, and the basis weight with respect to the thickness (mm) (g / m ² ) ratio of 200 (g / m ² / mm) or less, and satisfying all physical properties that the difference in thermal contact feeling between dry and wet conditions is 0.55 W / cm ² or less. In order to obtain a comfortable elastic knitted fabric excellent in lightness and moisture retention while being dry touch, as a non-elastic fiber, the cross-sectional shape of a single fiber is a trilobal type with a degree of atypical degree of 2.5 or more, It is important to use polyamide fibers having a total fineness of 44 dtex or less.

  Further, the fabric made of the elastic knitted fabric of the present invention is preferably a warp knitted fabric having a knitting gauge of 28 gauge or more so as not to adversely affect the pilling property and the snag characteristic. When the knitting gauge is less than 28 gauge, the knitting density constituting the fabric becomes too coarse, which adversely affects pilling and snag characteristics. The knitting gauge is preferably 40 gauge or less from the viewpoint of productivity.

  When using the fabric comprising the elastic knitted fabric of the present invention as an inner material, the thickness of the fabric should be reduced to 0.85 mm or less in order to make it difficult to see the inner line from the feeling of wear and outer garment. Is preferred. For this purpose, it is preferable that the first Osa polyamide fiber constituting the fabric has a loop length of 0.3 cm / 1 loop or less. The knitting structure is preferably a half tricot structure or a denby tricot structure. This half tricot means that the first rock (front) is swung by two stitches and the second rock is swung by one stitch. The denby structure is a knitting structure in which the first oscillating is one stitch and the second oscillating is one stitch, and the first and second knitting may be knitted in different directions or in the same direction. There is no problem even if the stitches are open or stitched.

  Examples Hereinafter, the present invention will be described by way of representative examples, but the present invention is not limited to these examples. Moreover, evaluation of the fabric of this invention is measured with the following method.

(1) Atypical degree of the cross section of the single fiber The atypical degree of the cross section of the single fiber is calculated by dividing the diameter of the circumscribed circle with respect to the cross section of the single fiber by the diameter of the inscribed circle with respect to the cross section of the single fiber.

(2) Water retention rate First, the mass of a sample 20 cm × 20 cm is measured (W). Next, after immersing the sample in water for 30 minutes, dehydration is performed once with a mangle squeezer, and the mass (Wx) is immediately measured in a room in a standard state (20 ° C., 65% RH), and the following equation is calculated.
Water retention rate (%) = (Wx−W) / W × 100

(3) Difference in contact thermal sensation In the following evaluation conditions, contact thermal sensation qmax (W / cm ² ) in a wet state (100% wet state with respect to the mass of the sample) and a dry state. ) And calculate the difference between them.
(Evaluation conditions)
The sample and apparatus (KES-F7, Thermolab II, manufactured by Kato Tech Co., Ltd.) are conditioned for 24 hours in a room adjusted to an environment of room temperature 20 ° C. and relative humidity 65% RH. Next, BT-BOX, which is brought into contact with the dough sample and measures the amount of heat transfer, is raised 20 ° C. from room temperature. For this purpose, the BT plate (heat plate) for storing heat is set to 40 ° C. Moreover, in order to warm this BT board, the thermal plate (G-BT) which guards the circumference | surroundings of a BT board is set to 20 degreeC, and is stabilized. Finally, a sample with the dough sinker loop surface facing upward is placed and placed on the BT-BOX, and the contact thermal feeling qmax is measured.

(4) Ratio of basis weight to thickness Using the following formula, the basis weight (g / m ² ) of the knitted fabric is divided by the thickness (mm).
Ratio of basis weight to knitted fabric thickness (g / m ² / mm)
= Weight (g / m ² ) / Thickness (mm)

(5) Relative viscosity of polyamide A sample solution is prepared by dissolving a sample in concentrated sulfuric acid (special grade) of 96.3 ± 0.1% by mass so that the polyamide concentration becomes 10 mg / ml. Next, the relative viscosity of the solution is measured using an Ostwald viscometer at a temperature of 20 ° C. ± 0.05 ° C. and the number of seconds when the water falls is 6 to 7 seconds. In the measurement, the same viscometer was used, and the same sulfuric acid was used as when the sample solution was prepared. From the ratio of the drop time T0 (second) of 20 ml of sulfuric acid to the drop time T1 (second) of 20 ml of sample solution, the relative viscosity RV Is calculated using the following equation.
RV = T1 / T0

(Example 1)
As an elastic fiber, a yarn made of a polyether-based polyurethane having a fineness of 22 dtex was produced according to a conventional method. Next, the non-elastic fiber is composed of multifilaments (33 dtex / 24 filament) made of nylon 6 having a trilobal cross-sectional shape of a single fiber, an irregularity of 3.0, and a relative viscosity of 3.5. Polyamide fiber yarns were produced.

  Using these elastic fiber yarns and non-elastic fiber yarns, a 32-gauge tricot knitting machine was used, and the front leather (polyamide fiber) was 10/23 and the back leather (polyurethane yarn) was 12/10. A half-weight 2-weight ricot was created. Next, the processing was finished under the conditions of prewetter / preset (190 ° C. × 40 seconds) / dyeing (liquid dyeing: 100 ° C. × 30 minutes) / finishing set (170 ° C. × 40 minutes).

The obtained fabric had properties of 120 course / inch, 65 wale / inch, a thickness of 0.75 mm, and a basis weight of 140 g / m ² . Moreover, the ratio of the fabric weight per unit thickness was 186.7 g / m ² / mm, the water retention was 52.6%, and the difference in contact thermal sensation was 0.47 W / cm ² .

(Example 2)
As an elastic fiber, a yarn made of a polyether-based polyurethane having a fineness of 22 dtex was produced according to a conventional method. Next, the inelastic fiber is composed of multifilaments (33 dtex / 12 filaments) made of nylon 6 having a trilobal cross-sectional shape of a single fiber, an irregularity of 3.0, and a relative viscosity of 3.5. Polyamide fiber yarns were produced.

  Using these elastic fiber yarns and non-elastic fiber yarns, a 24-gauge tricot knitting machine is used, and the front cloth (polyamide fiber) is 10/23 and the back cloth (polyurethane yarn) is 12/10. A half-weight 2-weight ricot was created. Next, the processing was finished under the conditions of prewetter / preset (190 ° C. × 40 seconds) / dyeing (liquid dyeing: 100 ° C. × 30 minutes) / finishing set (170 ° C. × 40 minutes).

The obtained fabric had properties of 130 courses / inch, 64 whales / inch, a thickness of 0.80 mm, and a basis weight of 147 g / m ² . Moreover, the ratio of the fabric weight per unit thickness was 183.8 g / m ² / mm, the water retention was 47.0%, and the difference in contact thermal sensation was 0.50 W / cm ² .

Example 3
As an elastic fiber, a yarn made of a polyether-based polyurethane having a fineness of 22 dtex was produced according to a conventional method. Next, the non-elastic fiber is composed of multifilaments (22 dtex / 12 filaments) made of nylon 6 having a trilobal cross-sectional shape of a single fiber, an irregularity of 3.0, and a relative viscosity of 3.5. Polyamide fiber yarns were produced.

  Using these elastic fiber yarns and non-elastic fiber yarns, using a 28 gauge tricot knitting machine, the front leather (polyamide fiber) is 10/23, and the back leather (polyurethane yarn) is 12/10. A half-weight 2-weight ricot was created. Next, the processing was finished under the conditions of prewetter / preset (190 ° C. × 40 seconds) / dyeing (liquid dyeing: 100 ° C. × 30 minutes) / finishing set (170 ° C. × 40 minutes).

The obtained fabric had properties of 140 courses / inch, 64 whales / inch, a thickness of 0.76 mm, and a basis weight of 107 g / m ² . Moreover, the ratio of the fabric weight per unit thickness was 140.8 g / m < ² > / mm, the water retention was 40.5%, and the difference in contact thermal sensation was 0.47 W / cm < ² >.

Example 4
As an elastic fiber, a yarn made of a polyether-based polyurethane having a fineness of 22 dtex was produced according to a conventional method. Next, the non-elastic fiber is composed of multifilaments (33 dtex / 24 filaments) made of nylon 6 having a single fiber cross-sectional shape of trilobal shape, an irregularity of 2.5, and a relative viscosity of 3.5. Polyamide fiber yarn was produced.

  Using these elastic fiber yarns and non-elastic fiber yarns, using a 28 gauge tricot knitting machine, the front leather (polyamide fiber) is 10/34, and the back leather (polyurethane yarn) is 12/10. A two-weight ricot for the satin organization was created. Next, the processing was finished under the conditions of prewetter / preset (190 ° C. × 40 seconds) / dyeing (liquid dyeing: 100 ° C. × 30 minutes) / finishing set (170 ° C. × 40 minutes).

The obtained fabric had properties of 120 course / inch, 65 wale / inch, a thickness of 0.90 mm, and a basis weight of 169 g / m ² . Moreover, the ratio of the fabric weight per unit thickness was 187.8 g / m ² / mm, the water retention was 60.0%, and the difference in the contact thermal sensation was 0.50 W / cm ² .

(Comparative Example 1)
As an elastic fiber, a yarn made of a polyether-based polyurethane having a fineness of 44 dtex was produced according to a conventional method. Next, as an inelastic fiber, a multifilament (56 dtex / 24) made of polyethylene terephthalate having a cross-sectional shape of a single fiber having a trilobal shape and an atypical degree of 2.0 and an intrinsic viscosity (IVp) of 0.63 dl / g. A filament of polyamide fiber composed of a filament) was produced.

  Using these elastic fiber yarns and non-elastic fiber yarns, a 32-gauge tricot knitting machine was used, and the front cloth (polyester fiber) was 10/23 and the back cloth (polyurethane yarn) was 12/10. A half-weight 2-weight ricot was created. Next, the processing was finished under the conditions of prewetter / preset (190 ° C. × 40 seconds) / dyeing (liquid dyeing: 130 ° C. × 30 minutes) / finishing set (170 ° C. × 40 minutes).

The obtained fabric had properties of 103 courses / inch, 64 whales / inch, a thickness of 0.69 mm, and a basis weight of 200 g / m ² . Moreover, the ratio of the fabric weight per unit thickness was 289.9 g / m ² / mm, the water retention was 38.6%, and the difference in contact thermal sensation was 0.48 W / cm ² . Therefore, the obtained fabric was inferior in lightness and water retention.

(Comparative Example 2)
As an elastic fiber, a yarn made of a polyether-based polyurethane having a fineness of 22 dtex was produced according to a conventional method. Next, as a non-elastic fiber, a polyamide fiber composed of a multifilament (33 dtex / 24 filament) made of nylon 6 having a single fiber with a round cross section, an irregularity of 1.0, and a relative viscosity of 3.5 is used. A yarn was produced.

  Using these elastic fiber yarns and non-elastic fiber yarns, using a 28 gauge tricot knitting machine, the front leather (polyamide fiber) is 10/23, and the back leather (polyurethane yarn) is 12/10. A half-weight 2-weight ricot was created. Next, the processing was finished under the conditions of prewetter / preset (190 ° C. × 40 seconds) / dyeing (liquid dyeing: 100 ° C. × 30 minutes) / finishing set (170 ° C. × 40 minutes).

The obtained fabric had properties of 130 courses / inch, 64 wales / inch, a thickness of 0.73 mm, and a basis weight of 149 g / m ² . Moreover, the ratio of the fabric weight per unit thickness was 204.1 g / m ² / mm, the water retention was 30.2%, and the difference in the contact thermal sensation was 0.60 W / cm ² . Therefore, the obtained fabric is not only inferior in lightness and water retention, but also has a large difference in contact feeling with the skin when worn in a dry state and a wet state, and inferior in comfort when worn. It was.

(Comparative Example 3)
As an elastic fiber, a yarn made of a polyether-based polyurethane having a fineness of 22 dtex was produced according to a conventional method. Next, as an inelastic fiber, a polyamide composed of multifilaments (33 dtex / 17 filaments) made of nylon 6 having a flat cross section of a single fiber, a degree of atypicality of 3.0, and a relative viscosity of 3.5 Fiber yarns were produced.

  Using these elastic fiber yarns and non-elastic fiber yarns, using a 28 gauge tricot knitting machine, the front leather (polyamide fiber) is 10/23, and the back leather (polyurethane yarn) is 12/10. A half-weight 2-weight ricot was created. Next, the processing was finished under the conditions of prewetter / preset (190 ° C. × 40 seconds) / dyeing (liquid dyeing: 100 ° C. × 30 minutes) / finishing set (170 ° C. × 40 minutes).

The obtained fabric had properties of 130 courses / inch, 64 wales / inch, a thickness of 0.74 mm, and a basis weight of 149 g / m ² . Moreover, the ratio of the fabric weight per unit thickness was 201.4 g / m ² / mm, the water retention was 30.7%, and the difference in contact thermal sensation was 0.68 W / cm ² . Therefore, the obtained fabric is not only inferior in lightness and water retention, but also has a large difference in contact feeling with the skin when worn in a dry state and a wet state, and inferior in comfort when worn. It was.

(Comparative Example 4)
As an elastic fiber, a yarn made of a polyether-based polyurethane having a fineness of 22 dtex was produced according to a conventional method. Subsequently, a polyamide fiber yarn composed of multifilaments (33 dtex / 24 filaments) made of nylon 6 having a hollow single fiber cross section and a relative viscosity of 3.5 was manufactured as an inelastic fiber.

  Using these elastic fiber yarns and non-elastic fiber yarns, using a 28 gauge tricot knitting machine, the front leather (polyamide fiber) is 10/23, and the back leather (polyurethane yarn) is 12/10. A half-weight 2-weight ricot was created. Next, the processing was finished under the conditions of prewetter / preset (190 ° C. × 40 seconds) / dyeing (liquid dyeing: 100 ° C. × 30 minutes) / finishing set (170 ° C. × 40 minutes).

The obtained fabric had properties of 130 courses / inch, 64 wales / inch, a thickness of 0.86 mm, and a basis weight of 149 g / m ² . Moreover, the ratio of the fabric weight per unit thickness was 173.3 g / m ² / mm, the water retention was 25.5%, and the difference in contact thermal sensation was 0.64 W / cm ² . Therefore, although the obtained fabric was excellent in lightness, the water retention was greatly inferior, and the difference in contact feeling with the skin when worn in a dry state and a wet state was large. Was also inferior.

(Comparative Example 5)
As an elastic fiber, a yarn made of a polyether-based polyurethane having a fineness of 22 dtex was produced according to a conventional method. Next, the inelastic fiber is composed of multifilaments (33 dtex / 24 filaments) made of nylon 6 having a trilobal cross section of a single fiber, an irregularity of 1.5, and a relative viscosity of 2.1. Polyamide fiber yarns were produced.

  Using these elastic fiber yarns and non-elastic fiber yarns, using a 28 gauge tricot knitting machine, the front leather (polyamide fiber) is 10/23, and the back leather (polyurethane yarn) is 12/10. A half-weight 2-weight ricot was created. Next, the processing was finished under the conditions of prewetter / preset (190 ° C. × 40 seconds) / dyeing (liquid dyeing: 100 ° C. × 30 minutes) / finishing set (170 ° C. × 40 minutes).

The obtained fabric had properties of 130 courses / inch, 64 wales / inch, a thickness of 0.76 mm, and a basis weight of 149 g / m ² . Moreover, the ratio of the fabric weight per unit thickness was 196.1 g / m ² / mm, the water retention was 34.0%, and the difference in contact thermal sensation was 0.57 W / cm ² . Therefore, although the obtained fabric was excellent in lightness, the water retention was slightly inferior, the difference in contact feeling with the skin when worn in a dry state and a wet state was somewhat large, and comfort during wearing Was insufficient.

(Comparative Example 6)
As an elastic fiber, a yarn made of a polyether-based polyurethane having a fineness of 22 dtex was produced according to a conventional method. Next, as a non-elastic fiber, a multifilament (33 dtex / 24 filament) made of polyethylene terephthalate having a cross-sectional shape of a single fiber having a trilobal shape and an irregularity of 3.0 and an intrinsic viscosity of 0.61 dl / g is used. A structured polyester fiber yarn was produced.

  Using these elastic fiber yarns and non-elastic fiber yarns, using a 28 gauge tricot knitting machine, the front leather (polyester fiber) is 10/23 and the back leather (polyurethane yarn) is 12/10. A half-weight 2-weight ricot was created. Next, the processing was finished under the conditions of prewetter / preset (190 ° C. × 40 seconds) / dyeing (liquid dyeing: 130 ° C. × 30 minutes) / finishing set (170 ° C. × 40 minutes).

The obtained fabric had properties of 130 courses / inch, 64 wales / inch, a thickness of 0.74 mm, and a basis weight of 149 g / m ² . Moreover, the ratio of the fabric weight per unit thickness was 201.4 g / m ² / mm, the water retention was 33.4%, and the difference in contact thermal sensation was 0.44 W / cm ² . Therefore, the obtained fabric has a small difference in contact feeling with the skin when worn in a dry state and a wet state, and is excellent in comfort at the time of wearing, but is insufficient in lightness and water retention. there were.

Tables 1 and 2 show the evaluation results of the fabrics obtained in the above Examples and Comparative Examples.

  The elastic knitted fabric of the present invention is made of a fabric having stretch properties using yarns of non-elastic fibers and yarns of elastic fibers, the non-elastic fibers have a single fiber cross-sectional shape of a trilobal shape, and an irregularity degree. Because it uses polyamide fibers with a high multifilament and a fine total fineness, it is lightweight and has excellent moisture retention and comfort while being dry touch. Therefore, it is suitable as a material for inner and sports.

It is a schematic diagram for demonstrating the cross-sectional shape of a single fiber.

Explanation of symbols

1: Monofilament 2: Leaf part 3: circumscribed circle 4: inscribed circle

Claims (4)

A non-elastic fiber made of an elastic knitted fabric having stretch properties using a yarn of elastic fiber and a yarn of elastic fiber, wherein the non-elastic fiber is a trilobal fiber having a cross-sectional shape of a single fiber of 2.5 or more It is a polyamide fiber with a total fineness of 44 dtex or less, and the elastic knitted fabric has a water retention of 35% or more and a basis weight (g / m ² ) ratio to thickness (mm) of 200 (g / m ^2). / Mm) or less, and the difference in contact thermal sensation between the dry state and the wet state is 0.55 W / cm ² or less.   The elastic knitted fabric according to claim 1, wherein the polyamide fiber has a single yarn fineness of 2 dtex or less.   The elastic knitted fabric according to claim 1 or 2, wherein the polyamide fiber is made of nylon 6 having a relative viscosity of 3.0 or more.   The elastic knitted fabric according to any one of claims 1 to 3, wherein the elastic knitted fabric is a warp knitted fabric of 28 gauge or more.

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