JP5788895B2 - Multilayer structure knitted fabric - Google Patents

Description

  The present invention relates to a multilayer structure knitted fabric. More specifically, the present invention is excellent in hygroscopicity, excellent in comfort when worn, hardly feels stuffy when sweating due to exercise, etc., and even when sweating a large amount when sweating, it is sticky due to sweat The present invention relates to a multi-layered knitted fabric that is less likely to feel a feeling of being wet, a feeling of cooling, and a good touch and appearance, and a textile product using the knitted fabric, such as innerwear, sportswear, bedding, and the like.

Cellulose-based materials such as cotton and cupra are excellent in hygroscopicity and water absorption, and when used as clothing, they are generally very comfortable when not sweating (insensitive vaporization) or when sweating a small amount. However, when the amount of perspiration exceeds about 100 g / m ² during summer or exercise, the cellulosic material tends to hold the perspired sweat, so that a so-called stickiness or a feeling of cooling after exercise is likely to occur. In particular, when the amount of perspiration exceeds about 200 g / m ² , such a sticky feeling or a feeling of coldness is serious and is felt very uncomfortable by the wearer.

As a method for preventing such unpleasant feeling due to the feeling of stickiness or cooling, various fabrics have been studied with the aim of transferring sweat from the skin side to the front side of clothes and leaving no moisture on the skin side. It is being advanced. Most of them are due to the use of hydrophobic fibers on the skin side, and various proposals have been made on fabrics in which the single yarn fineness and cross-sectional shape of the yarns used are different on the knitted fabric front side and back side.
For example, in Patent Document 1 and Patent Document 2 below, moisture is left on the back side of the knitted fabric by using fibers having excellent water absorption capability on the knitted fabric surface side and fibers having poor water absorption capability on the back side (skin) side of the knitted fabric. There has been proposed a knitted fabric that has a structure that does not have a sticky feeling and a feeling of cooling.
In patent document 1, since the fiber inferior in water absorption ability is used on the knitted fabric back (skin) side, it cannot be said that the ability to absorb sweat is sufficient, and short fibers such as cotton are used as fibers excellent in water absorption ability. Therefore, the ability to diffuse sweat that has been sucked is inferior, and the effect of reducing stickiness is not sufficient.
On the other hand, in Patent Document 2, cellulose filament is used as a fiber having a high water absorption capacity, so that the ability to diffuse is excellent. However, since hydrophobic fibers are used on the knitted fabric back (skin) side, the ability to absorb sweat is sufficient. is not.

  Further, Patent Document 3 below discloses a knitted fabric in which irregularities are provided on the knitted fabric back (skin) side, polyester filament fibers are disposed in the convex portions, and rayon filament fibers are disposed in the concave portions. Since the convex portion is a hydrophobic fiber, the ability to absorb sweat is not sufficient as in the knitted fabric described in Patent Document 1 or Patent Document 2.

Furthermore, Patent Document 4 discloses a knitted fabric containing hydrophilic fibers on the knitted fabric back (skin) side. In Patent Document 4, a knitted fabric made of hydrophilic fibers and hydrophobic fibers is used, and the course density on the knitted fabric back (skin) side is made larger than that on the knitted fabric front side, and the knitted fabric back (skin) side A knitted fabric having a smooth feeling on the skin by imparting irregularities to the skin is disclosed.
However, since the knitted fabric has a high density and a high mixing ratio of hydrophilic fibers of 25 to 75%, the water is retained on the skin side, and even if there are irregularities, the feeling of stickiness is large, and the skin DRY property as a garment application Is insufficient.

  As described above, there is still a need to provide a comfortable knitted fabric that is free from stuffiness and can suppress a feeling of stickiness or cooling from insensitive steaming or a small amount of sweat to a large amount of sweat.

JP 2001-81652 A Japanese Patent Laid-Open No. 10-25643 Japanese Patent Laid-Open No. 10-131000 JP 2004-190151 A

  The problem to be solved by the present invention is that there is no stuffiness at the time of insensitive steaming or a small amount of sweating, and even when sweating a lot due to exercise etc., it is difficult to feel sticky feeling due to sweat, wet feeling, cold feeling An object of the present invention is to provide a knitted fabric having a good texture and excellent wear resistance.

As a result of intensive studies and experiments conducted to solve the above problems, the present inventors can solve the above problems by arranging a specific amount of cellulosic long fibers in the vicinity of the back side (skin surface) surface of the knitted fabric. As a result, the present invention has been completed.
That is, the present invention is as follows.

[1] The entire knitted fabric in a region within a depth of 0.13 mm of the knitted fabric on at least one surface A of the knitted fabric containing at least 5 to 25% by weight of cellulose-based long fibers and 75 to 95% by weight of synthetic fibers The area of the appearance part of the cellulosic long fibers with respect to the area of the surface is 0.2 to 15%, and the contact cooling sensation when the surface A is given 200 g / m ² moisture is 180 to 330 W / m ² · ° C. A knitted fabric characterized by that.

  [2] The knitted fabric according to [1], wherein the thickness is 0.5 to 1.2 mm.

  [3] The knitted fabric according to [1] or [2], wherein the surface A has unevenness with a depth of 0.13 to 0.50 mm.

  [4] The knitted fabric according to any one of [1] to [3], wherein the surface B opposite to the surface A is made of a synthetic fiber.

  [5] X> Y, where X is the cellulose long fiber mixing ratio of the entire knitted fabric, and Y is the appearance ratio of cellulose long fibers in the region within a depth of 0.13 mm of the knitted fabric. The knitted fabric according to any one of [1] to [3].

  [6] The knitted fabric according to any one of [1] to [5], wherein the cellulose-based long fibers are composite yarns with polyester-based or polyamide-based long fibers.

  [7] A textile product comprising the knitted fabric according to any one of [1] to [6], wherein the surface A is located on the skin surface when worn.

  The knitted fabric of the present invention is comfortable without stuffiness during insensitive steaming or a small amount of sweating, and even when sweating a lot due to exercise etc., it is hard to feel a sticky feeling, wet feeling, cold feeling due to sweat, and the texture Since it is good and excellent in abrasion, it can be suitably used as a knitted fabric for innerwear, sportswear, and bedding.

It is an example of the knitted fabric organization chart of this invention. It is an example of the knitted fabric organization chart of this invention. It is an example of the knitted fabric organization chart of this invention. It is an example of the conventional knitted fabric organization chart.

Hereinafter, the present invention will be described in detail.
The knitted fabric of the present invention is a knitted fabric containing at least 5 to 25% by weight of cellulosic long fibers and 75 to 95% by weight of synthetic fibers. That is, in the knitted fabric of the present invention, the cellulosic long fibers are contained in an amount of 5 to 25% by weight, preferably 5 to 20% by weight of the entire knitted fabric.
In the present specification, the cellulose-based long fibers include regenerated cellulose long fibers such as rayon, cupra, and acetate, and natural cellulose long fibers such as silk, and are not particularly limited. These have less fuzz and a smooth yarn surface than cellulose short fibers such as cotton and regenerated cellulose short fibers, and thus have a high moisture diffusing ability. Among these, regenerated cellulose long fibers are preferable, and among the regenerated cellulose long fibers, rayon long fibers and cupra long fibers are more preferable because they have a higher moisture content and a higher moisture absorption effect than the raw material cotton. In particular, the cupra long fiber is particularly preferable because it has a smoother surface shape and a finer fineness than the rayon long fiber, and is very soft when used in a knitted fabric and has a good texture. By effectively arranging these fibers in the knitted fabric, it is excellent in hygroscopicity and reduction in stickiness, and there is no stuffiness or stickiness even during insensitive digestion or when sweating from a small amount to a large amount of sweat. It can be the ground. When the content of cellulose long fibers relative to the entire knitted fabric is less than 5%, the hygroscopicity is small, the ability to absorb gas perspiration during insensitive steaming or a small amount of sweating, and the water absorption and transfer by cellulose long fibers. Aqueousness is also insufficient, and the effect of reducing stickiness when sweating cannot be expected, and the knitted fabric is inferior in comfort when worn. On the other hand, when the content of the cellulose long fibers exceeds 25%, stickiness during sweating described later and a feeling of cooling after sweating increase, and the knitted fabric is inferior in comfort when worn.
The fineness of the cellulosic long fibers is not particularly limited, but is preferably about 22 to about 84 dtex, and more preferably about 33 to about 56 dtex. The single yarn fineness of the cellulosic long fibers is not particularly limited, but about 0.5 to about 2 dtex is preferable from the viewpoint of touch and texture.

  When cellulosic long fibers are included in the knitted fabric, it can be used by knitting with long fibers and short fibers of synthetic fibers such as polyester and polyamide. It is preferable from the viewpoint of sweat treatment that it is arranged on the knitted fabric as a composite yarn with a synthetic fiber such as a polyamide-based long fiber, particularly a synthetic fiber. A multifilament yarn having a fineness of the synthetic long fiber of about 22 to about 84 dtex and a single yarn fineness of about 0.5 to about 2 dtex is preferable so as not to impair the touch when compositing. The fineness ratio between the cellulose-based long fibers and the synthetic long fibers combined is preferably 1: 3 to 2: 1. The synthetic fiber is preferably an atypical cross section from the viewpoint of sweat treatment by diffusion when sweating, and the W-shaped cross section fiber is atypical and flat, satisfying both sweat treatment by capillarity and softness. Therefore, it is more preferable.

  Cellulosic long fibers or composite yarns of cellulose long fibers and synthetic long fibers are knitted with other fibers and arranged on the knitted fabric. The knitting partner yarn is preferably a synthetic long fiber, particularly a polyester or polyamide long fiber, and a multifilament yarn having a fineness of about 16 to about 170 dtex and a single yarn fineness of about 0.5 to about 2 dtex is preferred. Polyurethane fibers may be appropriately knitted to impart stretch properties to the knitted fabric. The multifilament yarn used in the present invention includes matting agents such as titanium dioxide, stabilizers such as phosphoric acid, ultraviolet absorbers such as hydroxybenzophenone derivatives, crystallization nucleating agents such as talc, easy lubricants such as aerosil, hindered Antioxidants such as phenol derivatives, flame retardants, antistatic agents, pigments, fluorescent brighteners, infrared absorbers, antifoaming agents and the like may be contained.

The material used for the knitted fabric of the present invention may have crimps, and the crimp elongation rate is preferably 0 to 150% from the viewpoint of touch. In addition, the crimp elongation of the false twisted yarn is measured under the following conditions.
The upper end of the crimped yarn is fixed, a load of 1.77 × 10 ⁻³ cN / dt is applied to the lower end, and the length (A) after 30 seconds is measured. Next, the load of 1.77 × 10 ⁻³ cN / dt was removed, the load of 0.088 cN / dt was applied, the length (B) after 30 seconds was measured, and the following formula (1):
Crimp elongation (%) = {(BA) / A} × 100 (1)
The crimp expansion rate is obtained by
As described above, the knitted fabric of the present invention is a knitted fabric containing at least 5 to 25% by weight of cellulosic long fibers and 75 to 95% by weight of synthetic fibers. That is, the knitted fabric of the present invention may contain fibers other than the cellulosic long fibers and synthetic fibers. However, the synthetic fiber is contained in an amount of 75 to 95% by weight, preferably 80 to 95% by weight of the entire knitted fabric.

  In the knitted fabric of the present invention, on one surface A, the area of the appearance part of the cellulosic long fibers in the region having a depth of 0.13 mm or less is 0.2 to 15% with respect to the total area of the knitted fabric, preferably 0.8. It is characterized by being 5 to 10%. Here, the region having a depth of 0.13 mm or less means the outermost layer on the surface A, and this layer directly touches the sweat of the skin and absorbs the sweat. A conventional knitting in which 100% synthetic fibers are located on the surface of the knitted fabric by adopting an inclined arrangement structure in which a small amount of cellulose long fibers are arranged in this layer and many cellulose long fibers are arranged in the inner layer of the knitted fabric. Compared with the ground, sweat is absorbed quickly, and the cellulose long fibers that are inclined are strongly sucked into the inner layer of the knitted fabric. Furthermore, due to the diffusibility of the cellulose long fibers, it is widely diffused in the knitted fabric without retaining sweat. Let As described above, the sweat of the skin is quickly and abundantly taken into the knitted fabric, and the stickiness at the time of wearing can be drastically improved. In addition, since the cellulose-based long fibers are excellent in water diffusibility, water is easily diffused in the inner layer, and the diffused sweat is diffused to the front side where the humidity is lower than the skin side.

In order to incline and dispose cellulose long fibers from the outermost layer to the inner layer of the knitted fabric, the mixing ratio of cellulose long fibers in the entire knitted fabric is X (% by weight), and the appearance ratio of cellulose long fibers in the outermost layer is Y (area%). X> Y is preferable, (2/3) · X> Y is more preferable, and (1/2) · X> Y is particularly preferable. In the present invention, the fact that the cellulose long fiber appearance rate on the surface of the outermost layer is lower than the cellulose long fiber mixing ratio in the entire knitted fabric is expressed as the cellulose long fibers being disposed in an inclined manner.
The specific gravity of long cellulose fibers is about 1.5, and the specific gravity of synthetic fibers is usually smaller than that (generally about 1.4 for polyester fibers, about 1.2 for polyurethane fibers, about 1 for polyamide fibers). .1), the relationship between the appearance amount ratio Yw (% by weight) of cellulose long fibers in the outermost layer and X is preferably X> Yw, and (2/3) · X> Yw is more preferable, and (1/2) · X> Yw is more preferable.
At this time, Yw is obtained by the following equation (2):
Yw = Y · D ₁ / {X · D ₁ + (100−X) · D ₂ } (2)
{Wherein D ₁ is the specific gravity of the long cellulose fibers, and D ₂ is the average specific gravity of the fibers other than the long cellulose fibers. }.

The knitted fabric of the present invention is excellent in the touch because a small amount of cellulosic long fibers are arranged on the surface A that touches the skin. Moreover, since it is excellent in hygroscopicity, a feeling of stuffiness can also be suppressed.
In order to further enhance the stickiness reduction effect of the knitted fabric of the present invention, a knitted structure in which irregularities are provided on the surface A is preferable. The difference in height between the convex portion and the concave portion is preferably about 0.13 to about 0.50 mm. Further, the convex portions are evenly distributed on the surface A. Specifically, when measuring an arbitrary 1 cm × 1 cm range in the sample, there are ten or more convex portions in the above range in any range. It is preferable that the convex area is about 10 to 70% of the surface area. As a method for imparting irregularities, there are a method of devising a knitting structure and incorporating a tack structure or a needle punched structure, a method of overlapping yarns at convex portions, a method of changing the yarn fineness, and the like.

By making the surface of the knitted fabric uneven, the feeling of contact cold / warmness is reduced. Therefore, when this surface is used as a skin surface, stickiness when sweating can be further reduced. If the difference between the height of the convex part and the concave part is less than about 0.13 mm, the contact area with the skin is not different from that with no irregularities, so it cannot be said that there are irregularities, and the effect of further reducing the sticky feeling of the knitted fabric is I can't expect it. If the difference in height between the convex portion and the concave portion is about 0.13 mm or more, the contact area between the skin and the knitted fabric when the side having the uneven surface of the knitted fabric is worn as the skin surface is reduced, and the knitted fabric absorbs moisture. The effect of reducing the stickiness when sucked is great. On the other hand, if the height difference between the convex part and the concave part exceeds about 0.50 mm, the fabric becomes thick, and the unevenness of the unevenness increases, and the feeling of wearing such as stuffiness due to the air layer is impaired. This is not preferable.
Moreover, if the difference in height between the convex portion and the concave portion exceeds 0.13 mm, there is a region that is not included in the above-described region having a depth from the surface of 0.13 mm or less. That is, in this case, the surface A has a depth of 0.13 mm or less (hereinafter referred to as the outermost layer on the surface A) and a depth exceeding 0.13 mm (hereinafter referred to as the inner layer on the surface A). And can be divided into The area occupied by the knitted fabric convex portion in the outermost layer on the surface A is preferably 10 to 70% of the total area of the surface A.

  The difference in height between the convex portion and the concave portion is averaged by taking a cross-sectional photograph of the knitted fabric with an electron microscope or the like and measuring it at five locations. The difference between the convex part and the concave part is more preferably about 0.17 to about 0.45 mm.

  By arranging the surface A of the knitted fabric of the present invention on the textile product so as to be on the skin side of the wearer, the effect exerted by the knitted fabric of the present invention described above is suitably expressed.

The knitted fabric of the present invention is characterized in that the surface A has a contact cooling sensation of about 180 to about 330 W / m ² · ° C. when moisture is applied at 200 g / m ² . The cool contact sensitive (hereinafter, also referred to as a contact sensation value.) Is preferably from about 180~280W / ^{m 2} · ℃, more preferably from about 180 to about 260W / ^{m 2} · ℃, more preferably about 180 to about 240 W / m ² · ° C.
Thermolab II manufactured by Kato Tech Co., Ltd. is used for measuring the contact cooling sensitivity. This apparatus measures the amount of heat transferred when a heated hot plate is placed on a sample. The specific measurement method is as follows.

The sample used for the measurement was conditioned for 24 hours in an environment of 20 ° C. and 65% RH (relative humidity), then sampled to 8 cm × 8 cm, The maximum heat transfer amount at the moment when a hot plate heated to 30 ° C. in a 65 ° C. and 65% RH environment is measured.
Moisture when 200 g / m ² of moisture is applied is a condition that assumes the amount of sweat moisture that the fabric absorbs when exercised to sweat a lot.
As a method for applying moisture at the time of measurement, it is only necessary to apply moisture to the surface A side of the sample by spraying so that the weight of the sample sampled to 8 cm × 8 cm becomes +1.28 g. The water temperature in the spray bottle at this time is 20 ° C.
If moisture remains in the knitted fabric, the thermal conductivity of water is high, so a large amount of heat is taken away from the hot plate, and the contact cooling sensitivity is increased. In other words, a sample having a large contact cooling sensation means that the sticky feeling is large, and if it exceeds about 330 W / m ² · ° C., the sticky feeling is very large and is not preferable, whereas a sample having a temperature less than about 180 W / m ² · ° C. However, in order to make the contact cooling sensation less than about 180 W / m ² · ° C., the unevenness needs to be remarkably increased, which is not preferable from the viewpoint of touch. In addition, the conventional knitted fabric containing cellulose greatly exceeds about 330 W / m ² · ° C., but in the present invention, the cellulose long fibers are inclinedly arranged in the knitted fabric, and the water absorption and diffusion ability of the cellulose long fibers is utilized. Even when a large amount of moisture is applied, the knitted fabric has improved stickiness.

The thickness of the knitted fabric of the present invention is preferably about 0.5 to about 1.2 mm.
The thickness of the knitted fabric is averaged by using a thickness measuring device manufactured by Peacock and contacting a measuring part of φ3.0 cm with the load of 5 g and measuring at three places. When the thickness is less than about 0.5 mm, the sweat treatment property is poor and it is difficult to obtain a comfortable feeling. On the other hand, when the thickness exceeds about 1.2 mm, the fabric becomes stiff and impairs the touch. The thickness of the knitted fabric of the present invention is more preferably about 0.5 to about 1.0 mm. Since the present invention absorbs sweat of skin quickly by absorbing and diffusing cellulose long fibers, the knitted fabric is thinner than 100% polyester compared to the knitted fabric aimed at reducing stickiness due to the difference in density and fineness of the front and back. Even so, the same level of effect can be exhibited.

  In the knitted fabric of the present invention, the surface B opposite to the surface A is preferably mainly composed of synthetic fibers. When cellulosic long fibers are placed on the surface of the knitted fabric, the fiber product surface side when worn is likely to cause thread breakage due to friction, and color differences and gloss differences are likely to occur with other knitted or composite fibers, which impairs the appearance. This is because there is a fear. The area of the appearance part of the cellulosic long fibers on the surface B is preferably 5% or less, more preferably 1% or less, still more preferably 0.2% or less, based on the total area of the knitted fabric. It is preferable that it is smaller than the area ratio of the appearance part of the cellulosic long fiber in the area | region within the depth of 0.13 mm of the surface A. Most preferably, the surface B is composed only of synthetic fibers.

  The knitted fabric of the present invention may be warp knitted or weft knitted, and preferably has a layer structure of three or more layers having two layers on the front and back sides and an inner layer therebetween, but the boundary between the layers is unclear due to restrictions on the knitting structure. It does not matter if it is a knitted fabric that is functionally equivalent to the three layers.

As the knitting machine for producing the knitted fabric of the present invention, a flat knitting machine, a double circular knitting machine, a tricot knitting machine, a Russell knitting machine or the like can be used, but a multilayer knitted fabric having three or more layers is produced. For this purpose, a double circular knitting machine is preferred. The knitting gauge of the knitting machine to be used is preferably about 10 to about 40 GG.
As a knitted structure for producing the knitted fabric of the present invention, in the case of a double circular knitted fabric, herringbone, blister, waffle, dimple mesh, etc. can be used, but it is not limited to this. A structure using tuck knitting is preferable. In the warp knitting, for example, a desired effect can be obtained by arranging a cellulosic fiber in the middle of a sheet of 3 sheets to form an uneven structure. The number of loops in the course direction on the front and back of the knitted fabric of the present invention is not particularly limited as long as there is no problem in knitting.

  In order to exert the effect of reducing the stickiness of the knitted fabric of the present invention, a small amount of cellulose long fibers are provided in the outermost layer of the surface A of the knitted fabric having a three-layer structure, and a larger amount of cellulose long fibers are provided in the inner layer of the surface A than in the outermost layer. An inclined arrangement structure in which the synthetic fiber is arranged on the surface B is effective. In this case, for example, by changing the number of yarns to be fed and the fineness of the yarn to control the supply amount of the yarn to be knitted and the cellulose continuous fiber, the cellulose continuous fiber can be inclined. In addition, the surface A of the two-layer structure knitted fabric is formed by plating knitting of cellulose long fibers or their composite yarns and synthetic fibers, and the cellulose long fibers are mainly arranged on the inner layer side of the knitted fabric surface A, thereby providing a clear three-layer A method that satisfies the configuration of the present invention even if it is not a structure is also preferably used. It is also possible to use a method in which cellulose long fibers are relatively arranged inside by using cellulose long fibers or their composite yarns and synthetic fibers on the surface A, changing the yarn fineness, and thickening the synthetic fibers. In this case, the fineness of the synthetic fiber on the surface A is preferably 1.5 times or more the fineness of the cellulose long fiber or composite yarn thereof.

The basis weight of the knitted fabric of the present invention is not particularly limited, but is preferably about 50 to about 300 g / m ² , more preferably about 80 to about 250 g / m ² .

Moreover, it is desirable to perform a water absorption process on the knitted fabric of the present invention.
In the knitted fabric of the present invention, by making the knitting density of the surface B larger than the knitting density of the surface A, a capillary phenomenon may be caused to move moisture from the surface A side to the surface B side. If such a knitted fabric surface A of the present invention having a moisture transfer function is worn as the skin surface of clothing, moisture will not remain on the skin surface even when a large amount of sweat is generated, and a feeling of stickiness and cooling when worn will be further increased. Can be reduced. Such a knitted fabric can be manufactured by a different gauge knitting machine having different gauges on the dial side and the cylinder side.

In order to develop capillary action, the number of loops in the well direction of the knitted fabric surface B is preferably about 1.1 to about 4.5 times the number of loops in the well direction on the knitted fabric surface A side. For the number of loops in the well direction on the surface, the number of stitch loops per 2.54 cm (1 inch) width is measured with a densimeter, a linen tester or the like. Here, the number of loops is the number of stitches of the knit loop confirmed on the front and back of the knitted fabric, and stitches such as tack loops and sinker loops are not included in the number of loops.
As another method for developing the capillary phenomenon, the fineness of the single yarn on the surface B side is made smaller than the fineness of the single yarn on the surface A side, preferably the fineness of the single yarn on the surface B side is set to the surface A side. It is mentioned to make it 1/2 or less of the yarn fineness of the single yarn.

The knitted fabric of the present invention can be used for textile products worn on the human body. At this time, if the knitted fabric of the present invention is used so that the surface B is located on the outside air side and the surface A is located on the skin side, the above-described effects are exhibited.
The knitted fabric of the present invention is suitable for clothing such as sportswear and innerwear that require a sweat treatment function among textile products, but is not limited thereto, clothing such as outer and lining, sheets, etc. It can be applied to hygiene articles such as bedding and incontinence pants, has comfort due to moisture absorption performance, and can exhibit the effect of reducing the feeling of stickiness and cooling due to moisture.

Hereinafter, the present invention will be described specifically by way of examples. Of course, the present invention is not limited to these.
The knitted fabric obtained in the examples was evaluated by the following method.
(1) Appearance area of cellulose long fibers on surface A (i) A knitted fabric sample was immersed in a dye solution containing 1% owf and 5 g / l of Na ₂ SO ₄ in a medium dark direct dye (such as Sumilight Blue). Heat at 30 ° C. and dye the cellulose long fiber part of the fabric. Set the sample after staining so that the density does not change from that before staining.
(Ii) Randomly determine the range of 1 cm × 1 cm in length and width from the sample of (i) above, and perform marking so that it can be identified three-dimensionally with a thread or the like.
(Iii) The marking portion of the surface A of the sample is measured with a three-dimensional surface shape measuring device at a measurement interval of 20 μm, the inclination of the data is corrected, and then the max value of the height is changed every 20 μm in an Excel contour map. The height at which the distribution appears evenly in the x 1 cm sample is the height of the outermost surface of the surface A, and a value that is 0.13 mm smaller than that is the max value of the contour map, The outermost layer part of A (area within a depth of 0.13 mm) can be specified. Here, “the height at which the distribution appears evenly” means the height at which the surface appears in any of the divided areas when a 1 cm × 1 cm area is divided into four 5 mm × 5 mm. To do. The cellulose long fiber on the outermost layer surface is measured by the following method.

(Iv) Photographing the marking portion of the surface A of the same sample with a microscope, and overlapping the data of (iii) and (iv) above, the portion where the colored yarn on the outermost layer surface of the surface A appears Is calculated as the appearance area of cellulose long fibers. If the image processing of (iv) is difficult, the data of (iii) and (iv) is printed out to the same size, the weight of the 1 cm × 1 cm portion paper is measured, The outer layer portion may be cut off, and the dyed yarn portion in the outer layer portion may be further cut off, and the weight may be measured for calculation. The appearance area of the cellulose long fibers on the surface A of the knitted fabric is calculated by the following formula (3):
Appearance ratio (area%) of cellulose long fibers on the surface A of the knitted fabric = Appearance area of cellulose long fibers on the outermost layer surface / sample area (3)

(2) Cellulose long fiber mixture ratio (wt%)
The cellulose blend ratio X of the entire knitted fabric is the knitting rate of the cellulose long fibers of the knitted fabric, and is based on the weight of the yarn consumed during knitting of the knitted fabric or the weight of cellulose long fibers measured by decomposing the obtained knitted fabric. Following formula (4):
X (% by weight) = (weight of cellulose long fiber in knitted fabric / weight of knitted fabric) × 100 (4)
However, if it is difficult to calculate based on the amount of yarn used, it may be calculated from the moisture content of the knitted fabric.

(3) Wear test After wearing a shirt made so that the back side of the dyed knitted fabric is on the skin, and resting in an artificial climate room at 28 ° C, 65% RH for 10 minutes, A treadmill ORK-3000 manufactured by Route Kogyo Co., Ltd. was used for 30 minutes at 8 km / h and rested again for 10 minutes. The feel / feel before running exercise and the feeling of comfort, and the sticky feeling after running exercise and the feeling of cooling were sensory evaluated according to the following evaluation criteria:
<Feel / feel before running exercise>
○: The touch and texture are good.
Δ: The touch and texture are slightly bad.
X: The touch and texture are bad.
<Comfort before running>
○: Comfortable.
Δ: Slightly uncomfortable.
X: Uncomfortable.
<Stickness after running exercise>
○: No sticky feeling.
Δ: Feels slightly sticky.
X: Feels sticky.
<Cool feeling after running>
○: A feeling of cold is not felt.
Δ: Slightly feels cold.
X: Feeling cold.

[Example 1]
Using a double different gauge circular knitting machine with a dial side of 18GG and a cylinder side of 24GG, interlace blend of polyester round section processed yarn 84dtex / 72f, 33dtex / 24f cupra round section yarn and 56dtex / 72f polyester round section yarn A composite yarn (crimp elongation 7.4%) produced by post-false twisting and a yarn (total fineness 336 dtex) obtained by aligning four polyester round cross-section processed yarns 84 dtex / 72f (total fineness 336 dtex) are shown in FIG. The circle numbers in the figure indicate the knitting order), and the knitted fabric raw machine was obtained. This raw machine was scoured at 80 ° C. for 20 minutes with a liquid dyeing machine, washed with water, and then pre-set at 180 ° C. for 90 seconds with a pinning ratio of 20%. Then, after performing polyester dyeing at 130 ° C. with a flow dyeing machine, water absorption processing, and washing with water, it was extended to a level where wrinkles could be removed with a pin tenter, and final setting was performed at 150 ° C. for 90 seconds. A knitted fabric of m ² and a thickness of 0.97 mm was obtained. On the surface A side of the obtained knitted fabric, there is a convex portion due to the difference in fineness of the arranged yarn, and the region within the depth of 0.13 mm (outermost layer portion) is 55% of the total area of the knitted fabric. there were. The appearance area ratio of the cellulose long fibers in the outermost layer of the surface A was 2.5% of the total area of the knitted fabric, and the cellulose long fibers were arranged in an inclined manner. The appearance area ratio of the long cellulose fibers on the surface B was 0%. The contact cooling sensation value at the time of applying moisture of 200 g / m ^{2 on the} surface A is 195 W / m ² · ° C., and the shirt test obtained from this knitted fabric is comfortable before exercise, and feels sticky and cool even after sweating. The result that there was no. The results are shown in Table 1 below.

[Example 2]
A composite yarn produced by using a 28 gauge double circular knitting machine and intertwisting interlaced polyester yarn 56dtex / 72f, 33dtex / 24f cupra round yarn and 56dtex / 72f polyester round yarn 2 and the polyester round cross-section processed yarn 56dtex / 24f, the same yarn at the knitting structure in FIG. 2 (the circled numbers in the drawing indicate the knitting order, and the knitted portions (for example, the circled numbers 1 and 13) marked on the same line) When feeding the composite yarn and polyester round cross-section processed yarn 56 dtex / 24, plating is performed so that the composite yarn is arranged on the inner side of the knitted fabric. In the same manner as in Example 1, a knitted fabric having a basis weight of 134 g / m ² and a thickness of 0.69 mm was obtained. On the surface A side of the obtained knitted fabric, there was a convex portion due to yarn overlap, the appearance area ratio of the cellulose long fibers on the outermost layer of the surface A was 4.7%, and the cellulose long fibers were inclined. . The appearance area ratio of the long cellulose fibers on the surface B was 0%. The contact cold sensation value when applying moisture of 200 g / m ^{2 on the} surface A is 220 W / m ² · ° C., and the shirt test obtained from this knitted fabric is comfortable before exercise and feels sticky and cool even after sweating. There was nothing. The results are shown in Table 1 below.

[Example 3]
Using a 28GG tricot knitting machine, polyester round cross-section processed yarn 56dtex / 24f is made into a structure 10/23 on the front, polyester round cross-section processed yarn 56dtex / 24f and cupra round cross-section processed yarn 56dtex / 30f in the middle with a structure 21/10. These were alternately arranged, and the polyester W cross-section processed yarn 56dtex / 30f was arranged as a structure 10/12 on the back. The cupra round section yarn was mainly arranged in the intermediate layer of the knitted fabric. Processing was performed in the same manner as in Example 1 to obtain a knitted fabric having a basis weight of 138 g / m ² and a thickness of 0.61 mm. On the surface A side of the obtained knitted fabric, unevenness due to the knitting structure was present, the appearance area ratio of the cellulose long fibers on the outermost layer of the surface A was 9.3%, and the cellulose long fibers were arranged in an inclined manner. The appearance area ratio of the long cellulose fibers on the surface B was 0%. The contact cooling sensation value at the time of applying moisture 200 g / m ^{2 on the} surface A was 255 W / m ² · ° C., and in the wearing test of the shirt obtained from this knitted fabric, it was comfortable and there was no stickiness or cooling feeling. The results are shown in Table 1 below.

[Example 4]
A composite yarn produced by using a 26 gauge double circular knitting machine and intertwisting interlaced yarns for false twisting of polyester round cross-section processed yarn 84dtex / 72f, 33dtex / 24f cupra round cross-sectional yarn and 56dtex / 72f polyester round cross-sectional yarn And the polyester round cross-section processed yarn 56dtex / 24f, the knitting structure in FIG. 3 (the circled numbers in the figure indicate the knitting order, and the knitted locations (for example, the circled numbers 1, 5, and 9) marked on the same line) When feeding the composite yarn and the polyester round section processed yarn 56 dtex / 24, plating is performed so that the composite yarn is arranged on the inner side of the knitted fabric. Knitting was performed in the same manner as in Example 1 to obtain a knitted fabric having a basis weight of 148 g / m ² and a thickness of 0.68 mm. The unevenness on the surface A of the obtained knitted fabric was small, the appearance area ratio of the cellulose long fibers on the surface A was 4.2%, and the cellulose long fibers were inclined. The appearance area ratio of the long cellulose fibers on the surface B was 0%. The contact cold sensation value at the time of applying moisture of 200 g / m ^{2 on the} surface A is 229 W / m ² · ° C., and the shirt test obtained from this knitted fabric is comfortable before exercise, and feels sticky and cool even after sweating. There was nothing. The results are shown in Table 1 below.

[Example 5]
A knitted fabric similar to that of Example 2 was prepared except that 84 dtex / 30f of rayon was used instead of 33dtex / 24f of the cupra round section raw yarn of Example 2, and a knitted fabric having a basis weight of 147 g / m ² and a thickness of 0.78 mm was prepared. Obtained. On the surface A side of the obtained knitted fabric, there was a convex portion due to yarn overlap, the appearance area ratio of the cellulose long fibers in the outermost layer of the surface A was 9.8%, and the cellulose long fibers were inclined. The appearance area ratio of the long cellulose fibers on the surface B was 5%. The contact cooling sensation value at the time of applying moisture of 200 g / m ^{2 on the} surface A was 273 W / m ² · ° C., and it was comfortable in the wearing test of the shirt obtained from this knitted fabric, and the stickiness and cooling feeling were small. . The results are shown in Table 1 below.

[Example 6]
The composite yarn of Example 2 is changed to a 56 dtex / 30 f cupra round cross-section yarn, and the yarn is fed as shown in the knitting structure of FIG. 2. The other conditions are the same as in Example 2, and the basis weight is 127 g / m ² . A knitted fabric having a thickness of 0.68 mm was obtained. On the surface A side of the obtained knitted fabric, there was a convex portion due to yarn overlap, and the appearance area ratio of cellulose long fibers in the outermost layer of the surface A was 13.8%. The appearance area ratio of the long cellulose fibers on the surface B was 3%. The contact cooling sensation value at the time of application of moisture 200 g / m ^{2 on the} surface A was 294 W / m ² · ° C., and in the wearing test of the shirt obtained from this knitted fabric, the feeling of stickiness and cooling was small. The results are shown in Table 1 below.

[Comparative Example 1]
Using a 28GG double circular knitting machine, a 56dtex / 24f cupra round cross section yarn and a 56dtex / 72f polyester round cross section yarn were interlaced and then false twisted, and a composite yarn and a polyester round cross section processed yarn 84dtex / 72f were produced. One was alternately arranged and knitted with the knitting structure shown in FIG. Processing was performed in the same manner as in Example 1 to obtain a knitted fabric having a basis weight of 139 g / m ² and a thickness of 0.71 mm. The unevenness on the surface A of the obtained knitted fabric was small, the appearance area ratio of the cellulose long fibers on the surface A was as large as 18.8%, and the cellulose long fibers were not inclined. The appearance area ratio of cellulose long fibers on the surface B was 18%. When the moisture content was 200 g / m ² , the contact cooling sensation value was 355 W / m ² · ° C., and in the wearing test of the shirt obtained from this knitted fabric, the feeling of stickiness and cooling was great. The results are shown in Table 1 below.

[Comparative Example 2]
A knitted fabric with a basis weight of 126 g / m ² and a thickness of 0.66 mm was obtained in the same manner as in Example 2 except that all the yarns were polyester round cross-section processed yarn 84 dtex / 72f. The knitted fabric is 100% polyester, and the contact cooling sensation value at the time of applying moisture 200 g / m ² is 348 W / m ² · ° C., and the wearing test of the shirt obtained from this knitted fabric lacks comfort before and after exercise. Met. The results are shown in Table 1 below.

  If the knitted fabric according to the present invention is used, it is comfortable without stuffiness at the time of insensitive steaming, and fibers such as clothes that can reduce the feeling of stickiness and cooling even when sweating a small amount or sweating a lot due to prolonged exercise etc. A product can be produced, and a comfortable wearing feeling can be obtained in the textile product thus produced, for example, clothes such as sportswear, inner wear, and outer wear, and bedding.

Claims (7)

In at least one surface A of the knitted fabric containing at least 5 to 20 % by weight of cellulosic long fibers and 80 to 95% by weight of synthetic fibers, the total area of the knitted fabric in the region within a depth of 0.13 mm of the knitted fabric The area of the appearance part of the cellulose-based long fibers is 0.2 to 15%, and the contact cooling sensation when the surface A is given 200 g / m ² moisture is 180 to 330 W / m ² · ° C. Knitted fabric.   The knitted fabric according to claim 1, wherein the thickness is 0.5 to 1.2 mm.   The knitted fabric according to claim 2, wherein the surface A has irregularities with a depth of 0.13 to 0.50 mm.   The knitted fabric according to any one of claims 1 to 3, wherein the surface B opposite to the surface A is made of a synthetic fiber.   X> Y, where X is the cellulose long fiber mixture ratio of the entire knitted fabric, and Y is the appearance ratio of cellulose long fibers in a region within a depth of 0.13 mm of the knitted fabric. The knitted fabric according to any one of the above.   The knitted fabric according to any one of claims 1 to 3, wherein the cellulose-based long fibers are composite yarns with polyester-based or polyamide-based long fibers.   The textile product which consists of the knitted fabric of any one of Claims 1-3, and the said surface A is located in a skin surface at the time of wear.

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