JP4068528B2 - Knitted fabric for clothing - Google Patents

Description

  The present invention relates to a knitted fabric suitable for clothing.

  Conventionally, in order to improve the sweat absorption of sportswear, etc. and reduce the stickiness to the skin, the contact points between the wet fabric and the skin have been eliminated, and the moisture on the skin surface has been changed to a multi-layered knitted structure. Proposals have been made to move quickly to the outer surface so that no moisture remains on the skin surface.

For example, Patent Document 1 proposes a knitted fabric having a concavo-convex portion having a certain height difference on the skin surface, using a polyester multifilament yarn for the convex portion and a rayon multifilament yarn for the concave portion. However, this method uses a highly water-absorbing material such as rayon on the skin surface even though it is a recess, so moisture absorbed from the skin surface is retained in this area and does not move to the outer surface, and the skin There was a problem of getting back on the surface.
Further, Patent Document 2 proposes a knitted fabric including a thread shape having a concavo-convex shape on the skin surface and a groove-like depression in the concave portion.
However, this method has a problem in that moisture is accumulated in the concave portion and moisture mobility to the outer surface is deteriorated. In addition, there is also a problem that it is difficult to dry and handling becomes difficult.
Japanese Patent Laid-Open No. 10-131000 JP 2000-328325 A

  In order to solve such problems, the present invention has excellent sweat absorbency when sweating, quickly absorbs sweat by point contact with the skin surface, has good moisture mobility to the outer surface, and is sticky to the skin. It is to provide a knitted fabric for clothing that suppresses the above.

As a result of intensive studies to solve the above-mentioned problems, the present inventor has given the unevenness according to a certain rule to the skin surface of the knitted fabric, and further has a polyester layer on the skin surface with a two-layer structure knitting structure. The present inventors have found that the above problem can be solved by using 90 wt% or more of fibers, and have reached the present invention.
That is, the present invention is as follows.

1. A double-layered knitted fabric containing 90 wt% or more of polyester fibers on the skin surface, the single yarn fineness of the polyester fibers is 1.5 to 10 dtex, the flatness is 2.0 to 4.0, and different cross sections has a shape, fineness is being 2 or more yarns different mixed knitting, on at least one side of the knitted fabric, the following when performing a 3-dimensional configuration measurement by laser measurement range of any through 5000 .mu.m × weft 5000 .mu.m A knitted fabric for clothing characterized by having irregularities that satisfy the following conditions.
In the measurement range, there are a plurality of regions having a height of 600 μm or more, and there are 10 or more and 30 or less points A satisfying the following formulas (1) and (2) among the highest points of each region, and There is at least one in the range of arbitrary longitude 2500 μm × lat 2500 μm.
a ≧ b−200 (1)
a−c ≧ 120 (2)
[However, a is the highest point height (μm) in each region having a height of 600 μm or more, b is the highest point height (μm) in the measurement range, and c is the highest point in each region having a height of 600 μm or more. The average height (μm) of the portion at a horizontal distance of 200 μm. ]
2. 2. The knitted fabric for clothing according to 1, wherein the surface having unevenness has a wet friction force of 44 cN or less .
The clothing which uses the surface which has the unevenness | corrugation in the knitted fabric for clothing of 3.1 or 2 for a skin surface.

  The knitted fabric for clothing of the present invention is excellent in sweat absorption when sweating, quickly absorbs sweat by point contact on the skin surface, has good moisture mobility to the outer surface, and suppresses stickiness to the skin. It is the earth.

Hereinafter, the present invention will be described in detail.
The knitted fabric for clothing of the present invention is characterized by having irregularities of a specific shape on at least one side of the knitted fabric, and the effect is exhibited by using the surface having the irregularities on the skin surface of the clothing.

The shape of the unevenness in the knitted fabric for clothing of the present invention is characterized in that the following conditions are satisfied when a three-dimensional shape measurement is performed with a laser beam for a measurement range of arbitrary warp 5000 μm × wet 5000 μm.
In the measurement range, there are a plurality of regions having a height of 600 μm or more, and there are 10 or more and 30 or less points A satisfying the following formulas (1) and (2) among the highest points of each region, and There is at least one in the range of arbitrary longitude 2500 μm × lat 2500 μm.
a ≧ b−200 (1)
a−c ≧ 120 (2)
[However, a is the highest point height (μm) in each region having a height of 600 μm or more, b is the highest point height (μm) in the measurement range, and c is the highest point in each region having a height of 600 μm or more. The average height (μm) of the portion at a horizontal distance of 200 μm. ]
Hereinafter, a three-dimensional shape measurement method using a laser beam will be described.

  Using a three-dimensional shape measurement system manufactured by Sigma Koki Co., Ltd., select a place where there are no defects in the knitted fabric by visual inspection, and set the warp direction of the knitted fabric and the Y direction of the measuring instrument with the measurement surface facing up on the sample table The distance between the measuring device and the surface of the knitted fabric is measured by applying a laser beam at an interval of 20 μm with respect to any arbitrary range of 5000 μm × wet 5000 μm. The height at each measurement point on the skin surface is calculated using this value as the value at which the highest distance is measured, that is, the height of the lowest point is replaced with the height from the horizontal plane. To do.

  The uneven surface of the knitted fabric for clothing of the present invention has a plurality of regions having a height of 600 μm or more. An area of 600 μm or more is defined as one area when measurement points having a height of 600 μm or more are adjacent to each other in an oblique direction. If it does not have a region of 600 μm or more, there is little difference in level of unevenness on the skin surface, and water accumulates between the skin surface and the knitted fabric when water is absorbed from the skin surface, which is not effective. Preferably, it has a plurality of regions of 700 μm or more.

In addition, among the highest points in each region, there are 10 to 30 points A that satisfy both of the following (1) and (2), and at least one point A within a range of arbitrary longitude 2500 μm × lattice 2500 μm To do.
a ≧ b−200 (1)
a−c ≧ 120 (2)
[However, a is the highest point height (μm) in each region having a height of 600 μm or more, b is the highest point height (μm) in the measurement range, and c is the highest point in each region having a height of 600 μm or more. The average height (μm) of the portion at a horizontal distance of 200 μm. ]
The highest point in each region refers to the highest measurement point in the region. In addition, the c value in the equation (2) is an average value of the total height of two points: two points separated by 200 μm in the longitudinal direction from the highest point of each region and two points separated by 200 μm in the weft direction.
The convex part which does not satisfy the formula (1) is relatively low in height, and when it contains moisture, it does not become a point contact with the skin and does not become the convex part of the present invention. Moreover, the convex part which does not satisfy the formula (2) has a gentle slope and does not become the convex part of the present invention. That is, stickiness cannot be quickly absorbed by point contact with the skin surface.

  On at least one surface of the knitted fabric for clothing of the present invention, there are 10 or more and 30 or less points A satisfying both (1) and (2) in an arbitrary measurement range of 5000 μm × 5000 μm. If the number is less than 10, the number is too small to have the effect of point contact. If the number is more than 30, the effect of surface contact is obtained, and the effect of point contact is lost. The point A also exists at least one point within an arbitrary range of 2500 μm × 2500 μm in the measurement range. If there is a range of warp 2500 μm × wet 2500 μm where point A does not exist, even if the above conditions of 10 μm to 30 μm in any warp 5000 μm × wet 5000 μm are satisfied, the density of the protrusions is greatly varied. The point contact effect is lost. By using a surface with protrusions according to certain rules as described above in terms of height, inclination and density on the skin surface of clothing, the sweat absorption when sweating is improved, and the point on the skin surface A knitted fabric that quickly absorbs sweat when touched and has good moisture mobility to the outer surface, reducing stickiness to the skin.

  In the knitted fabric for clothing of the present invention, the fiber constituting the surface that comes into contact with the skin when it is made into clothing, that is, the surface having irregularities of the specific shape (hereinafter referred to as the skin surface of the knitted fabric) is preferably a polyester fiber. The use of hydrophobic fibers on the skin surface of the knitted fabric results in less water retention after moisture is absorbed from the skin surface and less moisture return to the skin. Moreover, it is excellent also in the point that the drying after containing a water | moisture content is quick. Of the hydrophobic fibers, polyester fibers are preferable to other hydrophobic fibers such as polyolefin fibers because of good processing steps and easy handling. Furthermore, it is preferable to apply a surface water-absorbing process for improving water absorption to the fiber surface constituting the skin surface of the knitted fabric because it can absorb sweat perspired quickly. It is preferable that 90% by weight or more of the polyester fiber is contained in the skin surface of the knitted fabric. When it is 90 wt% or more, the performance of quickly absorbing sweat on the skin surface and transferring moisture to the outer surface is improved.

As the form of the polyester fiber, it is preferable to use a form having a small gap between the single yarns such as a raw yarn and a fluid entangled yarn because the sweat absorbed from the skin surface can be quickly transferred to the front side. Among the fluid entangled yarns, the fluid jet yarn is particularly preferable because it can give fine irregularities.
The single yarn fineness of the polyester fiber is preferably 1.5 to 10 dtex. When the single yarn fineness is within this range, the gap between the single yarns can be reduced, sweat absorbed from the skin surface of the knitted fabric can be quickly transferred to the outer surface, and the stickiness is improved. In addition, when a polyester fiber is a hollow fiber, an apparent fineness is used as a single yarn fineness. The apparent fineness means the single yarn fineness when it is assumed that the hollow portion is solid when the single yarn is hollow, and the apparent single yarn cross-sectional area (C ₁ ) and the actual single yarn cross-sectional area (C ₂ ) are measured by image analysis, and the apparent single yarn fineness (T) is calculated by the following equation (3).
T = Measured single yarn fineness × C ₁ / C ₂ (3)
When the single yarn fineness is increased, the stickiness is improved, but a rough texture may be obtained. Therefore, it is preferable to use a flat cross-section variant yarn having a flatness of 2.0 to 4.0. The flatness mentioned here is a value (L / H) obtained by drawing a rectangle circumscribing the cross section of the single yarn and dividing the long side L of the rectangle by the short side H.

Furthermore, the apparent single yarn fineness is preferably 2.0 to 10.0 dtex, more preferably 3.0 to 10.0 dtex on the skin surface of the knitted fabric, and the flatness of the single yarn cross section is 2.0 to 4. It is preferable to use a flat cross-section hollow fiber that is zero.
When the apparent single yarn fineness is within the above range, the absorbed sweat easily migrates to the surface, and the texture is soft. Moreover, if it is a hollow fiber, a knitted fabric will become lightweight and will become easy to leave | separate from skin when sweat is included.
The flat cross-section hollow fiber preferably has an eyeglass-type cross-sectional shape having two independent hollow portions extending in the longitudinal direction. The hollow ratio of the single yarn having a glasses-type cross section is preferably 20 to 40%, and more preferably 25 to 35%. When the hollow ratio is in the above range, the lightness is excellent, the bending stress is low, and the texture of the knitted fabric is soft.
In order to move the sweat from the skin surface to the outer surface of the fabric more quickly by reducing the water retention rate of the yarn, it is preferable that the glasses-type cross-section hollow fiber is fluid-jet processed.

  There are no particular restrictions on the method of imparting irregularities to the skin surface of the knitted fabric, but there are two types of differences in fineness and shrinkage ratio and different cross-sectional shapes in order to provide irregularities with large elevation differences and a certain density. It is preferable to knit with the above-mentioned yarn, for example, a knitting structure as shown in FIG.

The knitted fabric of the present invention is preferably a two-layered knitted fabric. Conventionally, as a method for improving sweat absorption and reducing stickiness, a method using a multi-layer structure knitting structure has been cited. The multi-layered knitted structure is a knitted structure in which there are two or more layers in which the structure, yarn use, and the amount of property change continuously and / or discontinuously in the thickness direction of the knitted fabric. As the number of layers increases, the number of voids that can absorb water increases and the stickiness decreases. However, the thickness increases, and it is difficult to dry and heavy. In order to achieve both the thickness and the function of reducing stickiness, two layers are preferable.
In the two-layered knitted structure, it is preferable to use a fiber having a hydrophilic surface at least on the surface opposite to the skin surface (hereinafter referred to as the front side).

  The fibers having at least a hydrophilic surface include those obtained by subjecting hydrophobic fibers such as polyester fibers and polyolefin fibers to surface hydrophilic processing, polyacrylic fibers, polyamide fibers and the like that have a highly polar hydrophilic functional group in the molecule, Examples thereof include natural fibers such as cotton, hemp, silk and wool, and regenerated cellulose fibers such as rayon and cupra. Of these, hydrophobic fibers such as polyester fibers and polyolefin fibers that have been subjected to surface hydrophilic processing are preferred because they have a high ability to evaporate absorbed sweat into the atmosphere.

  On the front side of the knitted fabric, it is necessary to use fibers with a large number of gaps between single yarns or fibers, such as spun yarns and long-fiber false twisted yarns, to quickly transfer sweat absorbed from the skin surface to the front side. And it is preferable because it can retain water so as not to return to the skin surface. Moreover, since the false-twisted yarn of a long fiber is excellent in practical performance such as anti-pilling property, it is preferably used. The single yarn fineness is preferably 0.1 to 3 dtex, more preferably 0.3 to 1.5 dtex. When the single yarn fineness is within this range, the surface area of the single yarn is increased, and voids capable of holding water are increased. Even with the same single yarn fineness, it is preferable to use an atypical yarn having a longer cross-sectional circumference than a round cross-section because the single yarn surface area is increased and the voids capable of holding water are increased.

FIG. 1 which is a preferred knitting structure in the present invention is an example of a circular knitting structure. No. 1 to No. Supply yarns in the order shown in FIG. In each organization chart, the upper row is a dial needle and the lower row is a cylinder needle. No. In 1, 3, 4, 6, 8, and 9, yarns constituting the surface opposite to the skin surface (hereinafter referred to as front side) are fed, and In 2, 5, 7, and 10, the yarn constituting the skin surface is fed.
By using the knitted fabric for clothing of the present invention thus obtained so that the skin surface (surface having specific irregularities) becomes the skin surface in the clothing, the sweat absorbability when sweating is obtained. It is excellent, and it is possible to obtain clothing that absorbs sweat quickly by point contact on the skin surface, has good moisture mobility to the outer surface, and suppresses stickiness to the skin.

Next, the present invention will be further described with reference to examples. However, the present invention is not limited to the examples.
In addition, the evaluation method in an Example is as follows.

<Qmax when wet>
Use Thermolab II manufactured by Kato Tech. Place the water-containing sample on the sample table with the skin surface facing upward, and measure the maximum heat transfer amount at the moment when the hot plate is placed on the sample. The measurement conditions are as follows.
Environmental conditions: 20 ° C, 65% RH
Sample size: 7cm x 7cm
Water application amount: 0.98 g uniformly applied from the skin surface Hot plate temperature: 30 ° C
Temperature of sample stage: 20 ° C
When the wet Qmax is 250 W / m 2 · ° C. or less, there is little wetting or stickiness due to moisture remaining on the skin surface.

<Measurement of wet friction force>
The skin surface of the sample is brought into contact with a metal roller having a diameter of 5 cm, and the resistance when the roller is rotated is measured in a wet state. The long side of the sample is brought into contact with the direction perpendicular to the axis of the roller, the lower end is suspended vertically and a load is attached, and the upper end is fixed in the horizontal direction. The measurement conditions are as follows.
Environmental conditions: 20 ° C, 65% RH
Sample size: 5cm x 20cm
Water application amount: 1g
Roller rotation speed: 4 cm / min
Load: 29.4 cN / 5cm
When this wet friction force is 44 cN or less, there is little stickiness.

<Wearing evaluation>
A golf shirt was created, and golf was played on a golf course on a sunny and sweaty day, and a sensory evaluation was performed for stickiness and overall comfort.
Evaluation was performed according to the following criteria.

(Stickiness)
◎: Non-sticky, ○: Almost non-sticky, ×: Sticky (comfort)
◎: Very comfortable, ○: Comfortable, ×: Uncomfortable

[Example 1]
84dtex / 36f round cross-section polyester fiber that has been subjected to false twist processing is subjected to fluid twist processing and false twist processing to a glass-type hollow cross-section polyester fiber (twin air: manufactured by Asahi Kasei Co., Ltd.) with an apparent fineness of 167 dtex / 48f. Using the 84 dtex / 30f W-shaped cross-sectional polyester fiber (Technofine: manufactured by Asahi Kasei) on the skin surface, a two-layer structure knitted fabric was produced according to the organization chart of FIG. The yarn supply on the skin side is as follows.
No. 2, 7: W-shaped cross-sectional polyester fiber 5, 10: Glass-type hollow cross-section polyester fiber Thereafter, normal finishing was performed. In addition, all the fibers used for the front side and the skin surface are subjected to surface hydrophilic processing.
The results of three-dimensional morphology observation of the skin surface of the obtained knitted fabric and the results of wet Qmax, wet friction force measurement, and wear evaluation are shown in Table 1.

[Example 2]
84 dtex / 30f W type with 42 /-T / C yarn on the surface, fluid injection processed glasses type hollow cross-section polyester fiber (Twinair: manufactured by Asahi Kasei Co., Ltd.) with an apparent fineness of 167 dtex / 48f, and false twisting A two-layer knitted fabric was prepared according to the organization chart of FIG. 1 using cross-sectional polyester fibers (Technofine: manufactured by Asahi Kasei) on the skin surface. The yarn supply on the skin side is as follows.
No. 2, 7: W-shaped cross-sectional polyester fiber 5, 10: Glass-type hollow cross-section polyester fiber Thereafter, normal finishing was performed. In addition, all the fibers used for the skin surface are subjected to surface hydrophilic processing.
The results of three-dimensional morphology observation of the skin surface of the obtained knitted fabric and the results of wet Qmax, wet friction force measurement, and wear evaluation are shown in Table 1.

[Comparative Example 1]
84dtex / 72f round cross-section polyester fiber subjected to false twist processing on the surface, 112dtex / 24f round cross-section polyester fiber raw yarn and 167 dtex / 100f round cross-section polyester fiber subjected to false twist processing on the skin surface A two-layer structure knitted fabric was produced according to the organization chart of FIG. The front side yarn feed is No. 1, 3, 5 and 7, the yarn supply on the skin side is as follows.
No. 2, 6: 112 dtex / 24f round cross-section polyester fiber 4,8: 167 dtex / 100f round cross-section polyester fiber Thereafter, normal finishing was performed. In addition, all the fibers used for the surface and the skin surface are subjected to surface hydrophilic processing.
The results of three-dimensional morphology observation of the skin surface of the obtained knitted fabric and the results of wet Qmax, wet friction force measurement, and wear evaluation are shown in Table 1.

[Comparative Example 2]
A smooth knitted fabric was produced using a 167 dtex / 72f round cross-section polyester fiber that had been subjected to false twisting, and was subjected to normal finishing. In addition, the used fiber gave the surface hydrophilic process.
The results of three-dimensional morphology observation of the skin surface of the obtained knitted fabric and the results of wet Qmax, wet friction force measurement, and wear evaluation are shown in Table 1.

  The knitted fabric for clothing of the present invention can be suitably used for clothing applications. In particular, the effect can be exhibited to the maximum in sports clothing that often sweats a lot when worn.

It is a figure which shows an example of the knitting structure in the knitted fabric for clothing of this invention. It is a figure which shows an example of the knitting structure in the knitted fabric of a comparative example.

Claims (3)

A double-layered knitted fabric containing 90 wt% or more of polyester fibers on the skin surface, the single yarn fineness of the polyester fibers is 1.5 to 10 dtex, the flatness is 2.0 to 4.0, and different cross sections has a shape, fineness is being 2 or more yarns different mixed knitting, on at least one side of the knitted fabric, the following when performing a 3-dimensional configuration measurement by laser measurement range of any through 5000 .mu.m × weft 5000 .mu.m A knitted fabric for clothing characterized by having irregularities that satisfy the following conditions.
In the measurement range, there are a plurality of regions having a height of 600 μm or more, and there are 10 or more and 30 or less points A satisfying the following formulas (1) and (2) among the highest points of each region, and There is at least one in the range of arbitrary longitude 2500 μm × lat 2500 μm.
a ≧ b−200 (1)
a−c ≧ 120 (2)
[However, a is the highest point height (μm) in each region having a height of 600 μm or more, b is the highest point height (μm) in the measurement range, and c is the highest point in each region having a height of 600 μm or more. The average height (μm) of the portion at a horizontal distance of 200 μm. ] The knitted fabric for clothing according to claim 1, wherein the wet frictional force of the surface having irregularities is 44 cN or less .   The clothing which uses the surface which has the unevenness | corrugation in the knitted fabric for clothing of Claim 1 or 2 for a skin surface.

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