JP2004027409A - Multilayer woven or knitted fabric having excellent quick-drying property - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a multilayer woven or knitted fabric having excellent wearing comfortableness, handleability and quick-drying properties. <P>SOLUTION: The multilayer woven or knitted fabric comprises two or more layers in which the surface layer is mainly constituted of a multifilament having 0.1-1.2 dtex single filament fineness and the back layer is mainly constituted of a multifilament having 1.5-5.0 dtex single filament fineness. An infrared absorber in a stuck amount of 0.02-50 g/m<SP>2</SP>is stuck fast to the surface layer. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a multilayer woven or knitted fabric excellent in quick-drying suitable for applications such as general clothing and sports clothing.
[0002]
[Prior art]
In general, hydrophobic fibers such as polyester fibers and polyamide fibers are characterized by a faster drying speed than hydrophilic fibers such as cotton and rayon. For this reason, conventionally, woven and knitted fabrics made of 100% hydrophobic fibers have been used in many clothing articles in order to improve quick drying during sweating and drying after washing.
[0003]
Although these hydrophobic fibers have better quick-drying properties than hydrophilic fibers, clothing supplies such as hard sports with heavy sweating, outdoor sports and winter sports in the rain and snow, marine sports in water, etc. In applications that absorb water, discomfort such as a feeling of coldness and stickiness has not been sufficiently eliminated, and a further excellent quick-drying property has been desired. In addition, a material with a faster drying speed is also demanded in the summer season when the number of washing increases.
[0004]
For this reason, for example, in Japanese Patent Application Laid-Open No. 9-316757, in a multi-layer structure knitted fabric, as a fiber constituting the surface layer, a fiber having a single yarn fineness smaller than that constituting the back surface layer is disposed, thereby sweating the fabric. A method has been proposed in which quick-drying is improved by moving and diffusing from the back layer to the front layer.
[0005]
However, this method is effective in the early stages of sweating, but when sweating a lot, sweat cannot be retained by the fabric surface layer alone, and sweat remains on the fabric back layer, eliminating the feeling of cooling and stickiness. There was a problem that I could not.
[0006]
[Problems to be solved by the invention]
The present invention has been made to solve the above-mentioned problems of the prior art, and the problem is that a multilayer woven or knitted fabric excellent in quick-drying that can be dried in a short time even when the fabric absorbs a large amount of moisture. Is to provide.
[0007]
[Means for Solving the Problems]
In order to achieve the above-mentioned problem, the present inventor has investigated the phenomenon until clothes that have absorbed a large amount of moisture are dried, and the wet clothes first begin to dry from the fabric surface side in contact with the outside air, The back side of the fabric, which was not in contact with the outside air, was found to be slow to dry because the air between the skin and clothes was highly humid. And by attaching an infrared absorber to the surface layer of the multilayer woven or knitted fabric having a specific single yarn fineness difference in the outer and inner layers, moisture quickly moves to the surface side of the fabric and dries. As a result, the desired quick drying property is excellent. The inventors have found that a multi-layered knitted fabric can be obtained, and have further studied earnestly, thereby completing the present invention.
[0008]
Thus, according to the present invention,
“Multilayer woven or knitted fabric composed of two or more layers, the surface layer is mainly composed of multifilaments having a single yarn fineness of 0.1 to 1.2 dtex, and the back layer is mainly composed of a single yarn fineness of 1.5 to 5 A multilayer woven or knitted fabric excellent in quick-drying, characterized in that it is composed of 0.0 dtex multifilaments, and an infrared absorber is fixed to the surface layer in an amount of 0.02 to 50 g / m ² .
Is provided.
[0009]
In this case, as the infrared absorber, metal oxide fine particles are preferably exemplified in that they do not change the hue of the woven or knitted fabric body.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the multilayer woven or knitted fabric of the present invention will be described in detail.
First, the multilayer woven or knitted fabric of the present invention is composed of two or more layers, and the number of layers of the woven or knitted fabric is not particularly limited. However, in order to maintain a soft texture, two layers of the surface layer and the back surface layer, or the surface Three layers of a layer, an intermediate layer, and a back layer are preferable. Here, when using a multilayer woven or knitted fabric, the back surface layer is a layer located on the most skin side, and the surface layer is a layer located on the most outside side.
[0011]
The fiber constituting each layer may be a known fiber such as synthetic fiber, semi-synthetic fiber, natural fiber, etc. Among them, polyester fiber, polyamide fiber, polyolefin fiber, polyacrylic, etc. may be used in order to increase the effect of quick drying. Synthetic fibers such as nitrile fibers are preferably exemplified.
[0012]
In particular, it is particularly preferable that all layers are made of polyester fibers. As the polyester fiber here, terephthalic acid is the main dicarboxylic acid component, and at least one glycol, preferably at least one alkylene glycol selected from ethylene glycol, trimethylene glycol, tetramethylene glycol, etc., is the main glycol component. A polyester fiber is exemplified.
[0013]
In the polymer, various stabilizers, ultraviolet absorbers, thickening and branching agents, matting agents, coloring agents, other various improving agents, and the like may be blended as necessary.
[0014]
Next, in the multilayer woven or knitted fabric of the present invention, the surface layer is mainly composed of multifilaments having a single yarn fineness of 0.1 to 1.2 dtex (preferably 0.5 to 1.0 dtex), while the back layer is mainly composed. And a single filament fineness of 1.5 to 5.0 dtex (preferably 2.0 to 4.0 dtex).
[0015]
If the single filament fineness of the multifilament constituting the surface layer is smaller than 0.1 dtex, it is not preferable because it easily catches on hands and clothes and tends to cause pilling. On the contrary, if the single filament fineness of the multifilament constituting the surface layer is larger than 1.2 dtex, the capillary phenomenon does not act sufficiently, and it becomes difficult to move moisture to the fabric surface layer side.
[0016]
On the other hand, if the single yarn fineness of the multifilament constituting the back surface layer is smaller than 1.5 dtex, the single yarn fineness difference between the fiber constituting the surface layer and the fiber constituting the back surface layer is small, and the surface layer and the back surface layer Since the difference in capillary action is small, the moisture absorbed by the back layer cannot be quickly transferred to the surface layer, and sufficient quick drying cannot be obtained. Conversely, if the single filament fineness of the multifilament constituting the back surface layer is larger than 5.0 dtex, the texture of the fabric becomes hard and the touch is unfavorable.
[0017]
Here, it is sufficient that the single yarn fineness of the multifilament constituting the back layer is 0.5 dtex or more (preferably 1.5 dtex or more) larger than the single yarn fineness of the multifilament constituting the surface layer. It is preferable for obtaining dryness. Thus, by providing a single yarn fineness difference between the surface layer and the back surface layer, moisture absorbed by the back surface layer can be quickly transferred to the surface layer due to the difference in capillary action between the surface layer and the back surface layer. .
[0018]
The total fineness of the multifilament constituting the surface layer and the multifilament constituting the back surface layer is not particularly limited, but a range of 20 to 150 dtex is appropriate in terms of texture and the like.
[0019]
In addition, although the multifilament which has the said single yarn fineness is distribute | arranged to a surface layer and a back surface layer, what is necessary is just to be comprised mainly with these multifilaments. That is, if both the front surface layer and the back surface layer are within 30 wt%, other fibers may be included.
[0020]
Further, when the multilayer woven or knitted fabric is composed of three or more layers, the fibers arranged in the intermediate layer are not particularly limited, but are preferably the same fibers as the front layer or the back layer in terms of production cost.
[0021]
The fiber form of the multifilament constituting the multilayer woven or knitted fabric of the present invention may be either a long fiber or a short fiber, but is preferably a long fiber. Further, such multifilaments may be subjected to false twisting or air processing such as interlacing or taslan. Furthermore, twisted yarn may be applied as necessary.
[0022]
In the multilayer woven or knitted fabric of the present invention, the woven or knitted structure is not particularly limited as long as it is a woven or knitted fabric having a multilayer structure of two or more layers. Examples thereof include a circular knitted fabric such as a double picket, a single warp knitted fabric such as a half, a back half, a quins cord, and a shark skin, and a double warp knitted fabric such as a double raschel and a double tricot. Examples of the woven fabric include multi-layer woven fabrics that can have a multi-layer structure such as warp double woven fabrics and weft double woven fabrics.
[0023]
The woven / knitted density of the woven / knitted fabric is not particularly limited. However, in terms of water absorption and texture, the woven / knitted fabric has a warp density of 50 to 200 / 2.54 cm and a weft density of 50 to 200 / 2.54 cm. The range is appropriate, and in the case of a knitted fabric, a range of 30 to 100 courses / 2.54 cm, 20 to 80 wales / 2.54 cm is appropriate.
[0024]
Next, in the multilayer woven or knitted fabric of the present invention, it is necessary that the infrared absorber is fixed to the surface layer in an amount of 0.02 to 50 g / m ² (preferably 0.5 to 20 g / m ² ). If the fixed amount of the infrared absorber is less than 0.02 g / m ^{2, the} solar energy absorption by the fabric surface layer is small, and a sufficient quick drying property cannot be obtained. On the other hand, when the amount of fixing is more than 50 g / m ² , quick drying is sufficient, but the temperature of the fabric back layer is increased, and depending on the application, there is a possibility of causing an increase in the amount of sweating.
[0025]
Here, the infrared absorber may be fixed to the outer surface of the surface layer at least, or may be fixed to the inside of the layer. Furthermore, the infrared absorber may be fixed to the entire outer surface, or may be fixed in a lattice shape or a dot shape so as not to impair the flexibility of the fabric. Moreover, you may make it adhere also to back surface layers other than a surface layer. However, if the infrared absorber is fixed to the back layer, the temperature of the back layer increases, and sweating may be promoted. Therefore, depending on the application, it may be preferable to fix the infrared absorber only to the surface layer. is there.
[0026]
The infrared absorber is not particularly limited as long as it has an absorption rate of 10% or more for infrared rays having a wavelength of 700 to 2500 nm, and examples thereof include metal oxide fine particles, carbon black, and infrared absorbing dyes of organic compounds. . Of these, metal oxide fine particles having an average particle diameter of 100 nm or less, such as antimony-doped tin oxide (ATO) and tin-doped indium oxide (ITO), are preferably exemplified. Such metal oxide fine particles are a transparent material that transmits visible light, and are preferable in that they do not change the hue of the fabric body.
[0027]
The method for fixing the infrared absorbent to the surface layer of the multilayer woven or knitted fabric is not particularly limited. Usually, a known composition means such as a gravure coating method or a screen printing method is used as a composition of the infrared absorbent and the binder resin. The method of making it dry after making it adhere in is illustrated suitably. In this case, the blended composition may be composed of either an aqueous system or a solvent system, but an aqueous system is preferable in view of the working environment of the processing step. Examples of the solvent include toluene, isopropyl alcohol, dimethylformamide, methyl ethyl ketone, ethyl acetate and the like. This blended composition may be used in combination with an epoxy-based crosslinking agent. Furthermore, you may mix | blend a suitable additive for the objective of improving the adhesiveness with respect to a multilayer knitted fabric.
[0028]
The blending ratio of the infrared absorber to the binder resin (resin solid content) is in the range of 1: 0.5 to 1:50 (more preferably 1: 5 to 1:40) in the former: latter. Is preferred. If the blending ratio of the binder resin is smaller than the above range, the infrared absorbent may fall off during washing after the multilayer knitted fabric is made into a product. On the contrary, even if the blending ratio of the binder resin is larger than the above range, the effect of washing durability is not changed so much and it is not economical.
[0029]
In the multilayer woven or knitted fabric of the present invention, when dyeing is performed, it is preferable to dye the infrared absorber before adhering it to the surface layer in order to prevent the infrared absorber from falling off. The staining may be performed by a conventional method.
[0030]
Furthermore, in the multilayer woven or knitted fabric of the present invention, conventional water-absorbing processing, water-repellent processing, brushed processing, and further, UV shielding or antistatic agent, antibacterial agent, deodorant agent, insect repellent agent, phosphorescent agent, retroreflective agent, etc. Various processes for imparting the above function may be additionally applied before and / or after the infrared absorber is adhered to the surface layer.
[0031]
In the multilayer woven or knitted fabric of the present invention, since the multifilament having a specific single yarn fineness is arranged on the front surface layer and the back surface layer, when sweating, sweat from the skin quickly passes through the back surface layer to the surface layer side. Spread. And the water | moisture content which moved to the surface layer side evaporates rapidly by the heat_generation | fever effect | action of the infrared absorber fixed to the surface layer. As a result, excellent sweat-absorbing quick drying properties can be obtained.
[0032]
【Example】
Hereinafter, although the heat insulating knitted fabric of the present invention will be described in detail with reference to examples, the present invention is not limited thereto. In addition, the measurement of the characteristic used in an Example is as showing below.
(1) In a room adjusted to a drying speed of 20 ° C. and a humidity of 65% RH, 1 cc of distilled water was dropped on a sample obtained by cutting a multi-layered knitted fabric into a 10 cm square, and then the wavelength distribution was close to that of sunlight and the radiant energy was 770 kcal / While irradiating m ² · h artificial sunlight (Toshiba Electric Materials Co., Ltd., solar radiation device), the weight of the sample was measured over time. The time (minutes) until the moisture completely dried was defined as the drying speed. At that time, the artificial sun was irradiated perpendicularly to the surface direction of the sample, and the sample was placed so that the distance between the artificial sunlight light source lamp and the sample was 1 m. Further, the sample was placed so that the surface layer (the layer having the smaller single yarn fineness) faced the light source lamp side.
(2) Back surface temperature The surface temperature of the back surface of the sample (assuming that the surface is not directly exposed to artificial sunlight, or the skin side when clothes are used) is a surface temperature measuring instrument (data collector AM7002TYPE-E manufactured by Anritsu Keiki Co., Ltd.). The temperature (° C.) 10 minutes after the start of irradiation was taken as the back surface temperature.
[0033]
[Example 1]
Polyester multifilament crimped yarn (total fineness 33 dtex, single yarn number: 36, single yarn fineness 0.9 dtex) is supplied to the front and back folds, and polyester multifilament (total fineness 33 dtex, single yarn number: 12, single yarn fineness) 2.8 dtex) is supplied to the middle ridge, and the knitting structure (front: 2-3 / 1-0, back: 1-0 / 1-2, middle: 3-3 /) by a tricot knitting machine (28 gauges). A multi-layer tricot knitted fabric of 0-0, knitting density 60 course / 2.54 cm, 28 wale / 2.54 cm) was produced. In the knitted fabric, polyester multifilament crimped yarn (total fineness 33 dtex, number of single yarns: 36, single yarn fineness 0.9 dtex) is disposed on the surface layer and the intermediate layer, and polyester multifilament ( The total fineness is 33 dtex, the number of single yarns is 12, and the single yarn fineness is 2.8 dtex).
[0034]
Next, after dyeing the knitted fabric by a conventional dyeing method, an acrylic binder 60.0%, ATO (antimony-doped tin oxide) aqueous dispersion 5.0 is formed on the surface layer (needle surface) of the knitted fabric. % (Solid content 15%, ATO particle diameter of 50 nm or less) and water 35.0% mixed composition was mixed with 105 mesh gravure roll, ATO 0.8 g / m ² , binder resin solid content 24.2 g / After adhering to m ² , the fabric was dried at 160 ° C. to obtain a knitted fabric as a multilayer woven or knitted fabric. The knitted fabric had a drying rate of 10.2 minutes and a back surface temperature of 31.0 ° C., and had excellent quick drying properties.
[0035]
[Example 2]
For the knitted fabric obtained in Example 1, 60.0% acrylic binder, 5.0% ATO (antimony-doped tin oxide) aqueous dispersion (solid content 15%) also on the back of the fabric (sinker surface) , following ATO particle size 50 nm), attaching the blended composition of the mixed ratio of 35.0% water, by 105 mesh gravure roll, ATO0.8g / ^{m 2,} the binder resin solid content 24.2 g / ^{m 2} and so as And then dried at 160 ° C. The knitted fabric had a drying rate of 8.4 minutes, a back surface temperature of 33.1 ° C., and had excellent quick drying properties. Moreover, the temperature of the knitted fabric back layer was high.
[0036]
[Comparative Example 1]
A knitted fabric was obtained in the same manner as in Example 1 except that the blended composition was not attached to the knitted fabric. The knitted fabric had a drying rate of 19.5 minutes and a back surface temperature of 30.4 ° C., which was insufficient in terms of drying properties.
[0037]
[Comparative Example 2]
Polyester multifilament crimped yarn (total fineness 33 dtex, number of single yarns: 12, single yarn fineness 2.8 dtex) is supplied to the front and back folds, and polyester multifilament (total fineness 33 dtex, number of single yarns: 12, single yarn fineness) 2.8 dtex) was supplied to the middle basket, and other than that, production of the multi-layer tricot knitted fabric, dyeing, and adhesion of the blended composition were performed in the same manner as in Example 1. In the knitted fabric, polyester multifilament crimped yarn (total fineness 33 dtex, number of single yarns: 12, single yarn fineness 2.8 dtex) is arranged on the surface layer and the intermediate layer, and polyester multifilament ( The total fineness is 33 dtex, the number of single yarns is 12, and the single yarn fineness is 2.8 dtex). The knitted fabric had a drying rate of 15.3 minutes and a back surface temperature of 31.7 ° C., which was insufficient in terms of drying properties.
[0038]
【The invention's effect】
Since the multilayer woven or knitted fabric of the present invention has excellent quick drying properties, it is excellent in wearing comfort and handleability and is suitable for uses such as for general clothing and sports clothing.

Claims (2)

A multi-layer woven or knitted fabric composed of two or more layers, wherein the surface layer is mainly composed of multifilaments having a single yarn fineness of 0.1 to 1.2 dtex, and the back layer is mainly composed of a single yarn fineness of 1.5 to 5. It consists of multifilament 0Dtex, and infrared absorbing agent to the surface layer, multi-layer woven or knitted fabric having excellent quick-drying, characterized by comprising fixed 0.02~50g / ^{m 2.} The multilayer woven or knitted fabric excellent in quick-drying property according to claim 1, wherein the infrared absorbent is a metal oxide fine particle.