JP2003105673A - Cellulose fiber woven / knitted fabric having cool feeling and method for producing the same - Google Patents

Abstract

(57) [Summary] A fiber surface of a cellulosic fiber woven or knitted fabric is
Acrylic beads having a particle size of 0.1 to 20 μm are attached. Cellulose fiber woven and knitted, particle size 0.1-20μ
It is obtained by impregnating an aqueous dispersion containing acrylic beads having a concentration of 1 to 30% by weight and a binder resin having a concentration of 0.1 to 10% by weight, squeezing, and then drying. The impregnation is preferably performed by padding from the viewpoint of preventing sedimentation of the acrylic beads. It is preferable that the adhesion amount of the acrylic beads is 0.01 to 0.72 g / 100 g of cloth. [Effect] When worn under direct sunlight, the rise in temperature inside the clothes is suppressed, and the coolness is excellent.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cellulosic fiber woven or knitted fabric having a cool feeling, and in particular, a cellulosic fiber which can be worn under direct sunlight to suppress an increase in temperature in clothes and to feel cool. Regarding woven and knitted fabrics.

[0002]

2. Description of the Related Art Conventionally, the problems to be solved by the invention
As a woven or knitted fabric that has a cool feeling when worn under direct sunlight,
There is one in which a fiber surface is provided with a property of reflecting sunlight.

For example, there is one in which aluminum is vapor-deposited to reflect sunlight.

Further, there is one in which ceramic fine particles such as titanium oxide or alkali metal titanate are adhered to fibers or kneaded into fibers to reflect sunlight.

However, in the case where aluminum is vapor-deposited on the fiber surface, since the fiber surface is uneven, the sunlight is diffusely reflected and the rise in the fabric temperature is not sufficiently suppressed.

If titanium oxide or the like is adhered or kneaded, if the amount of titanium oxide or the like used is increased,
The dough becomes brittle. Further, the dark-colored product has a problem that the material is whitened. Further, since titanium oxide or the like itself absorbs sunlight and converts it into heat energy, there is a problem that the fabric temperature rises.

An object of the present invention is to provide a cellulosic fiber woven or knitted fabric which is free from the above problems and is excellent in cool feeling and a method for producing the same.

[0008]

Means for Solving the Problems and Modes for Carrying Out the Invention In the present invention, as the first invention, the particle diameter is 0.1 to 20 μm.
There is provided a cellulosic fiber woven or knitted fabric having a cool feeling, characterized in that the acrylic bead particles of (1) are adhered to the fiber surface.

As a second invention of the present invention, a cellulosic fiber woven or knitted fabric has acrylic beads having a particle diameter of 0.1 to 20 μm in a concentration of 1 to 30% by weight, and a binder resin in a concentration of 0.1 to 10% by weight. % Of the aqueous dispersion is impregnated, squeezed, and then dried to provide a method for producing a cellulosic fiber woven or knitted fabric having a cool feeling.

As a third aspect of the present invention, there is provided a method for producing a cellulosic fiber woven or knitted fabric having a cool feeling, which is characterized in that the impregnation is performed by padding in the second aspect.

The details of the present invention will be described below.

As the cellulosic short fibers in the present invention, natural cellulosic fibers such as cotton and hemp, regenerated cellulosic fibers such as rayon and cupra, and high strength regenerated cellulosic fibers (trade name: Tencel etc.) can be used. Of these, cotton is preferred from the viewpoints of water absorption, texture and strength.

Further, it may be a mixture of the above-mentioned cellulosic fibers and synthetic fiber short fibers such as polyester and nylon, or wool.

The cellulosic fiber woven or knitted fabric of the present invention can be used as a woven or knitted product by using the above-mentioned cellulosic fiber as a yarn by a usual method.

In the present invention, acrylic beads are adhered to the fiber surface of the above-mentioned cellulosic fiber woven or knit fabric.
As the acrylic beads, beads made of acrylic resin can be used. The shape is preferably a spherical shape or a shape close to a true spherical shape from the viewpoint of reflection performance,
A true spherical shape is particularly preferable. The particle diameter is preferably 0.1 to 20 μm, more preferably 1 to 10 μm. When it is 0.1 μm or less, there is a problem that the light reflectivity is insufficient, and when it is 20 μm or more, there is a problem that the beads settle in the dispersion liquid, which is not preferable.

Next, the manufacturing method of the present invention will be described. In the present invention, a cellulosic fiber woven or knitted fabric is impregnated with an aqueous dispersion containing acrylic beads having a particle diameter of 0.1 to 20 μm in a concentration of 1 to 30% by weight and a binder resin in a concentration of 0.1 to 10% by weight, It is squeezed and then dried.

An acrylic binder resin can be preferably used as the binder resin. The acrylic beads are attached and fixed to the fiber surface by the binder resin.

In addition, if necessary, a softening agent, a penetrating agent,
A resin processing agent or the like can be added.

Impregnation is preferably carried out by padding, from the viewpoint of preventing the acrylic beads from settling. Aperture ratio is 5
Perform at 0 to 120%.

Thereafter, it is heated and dried. The heat drying is preferably a tenter treatment. The drying conditions are appropriately selected depending on the binder resin used, but the normal temperature is 90 to 140 ° C and 3
0 to 200 seconds. Further, if necessary, for example, when a resin processing agent is used, it may be further heat-treated, but the condition in that case is 140 to 160 ° C. for 90 to 180 seconds.

The amount of the acrylic beads attached to the cloth after heat drying is preferably 0.01 to 0.72 g / 100 g of cloth.

Examples will be described below.

[Example] Kanoko (30 inch x 18 gauge) using 100% cotton 40 count double yarn was bleached and mercerized by a conventional method, then dyed black and dried. This knitted fabric was impregnated with padding according to the following formulation to a draw ratio of 100%, and then dried in a multistage tenter at 130 ° C for 150 seconds. The amount of acrylic beads attached was 0.2 g / 100 g of the knitted fabric. ○ Prescription compounding part Acrylic beads 10 (Product name “Reflecool MTR”; made by Daiwa Chemical) Acrylic binder resin 1 (Product name “Boncoat R3020”; made by Dainippon Ink) Softener (Product name “Shumin SN-15”; Miyoshi oil and fat) 4 Penetrant (trade name "Finetex NRW"; made by Dainippon Ink) 0.1 Water 94.9 Total 100

[0023]

Comparative Example 1 The procedure of Example 1 was repeated except that titanium oxide was used instead of acrylic beads.

[0024]

[Comparative Example 2] The same procedure as in Example was carried out except that acrylic beads were not added.

Table 1 shows the performance test results for the knitted fabrics of Examples and Comparative Examples 1 and 2.

[0026]

[Table 1]

Simple clothing was made from the knitted fabrics of Example and Comparative Example 2 and a wearing test (5 subjects) was conducted. The results are as follows. Wearing test method: A temperature sensor was installed in the clothes, and after resting for 5 minutes in an environment of 30 ° C x 50%, a solar light approximate lamp (150W) was placed for about 5 minutes from a position about 1 m away from the wearer's back. The temperature was measured after irradiation and resting for about 5 minutes. In addition, the subjects were surveyed about coolness in a three-level evaluation. (1) Three-stage evaluation After the wearing test, five subjects compared with Example and Comparative Example 2 in three-stage evaluation (cool, slightly cool, unchanged)
I went. As for the evaluation result, all of the five people evaluated that the example was “cooler”. (2) Fig. 1 shows the results of measuring the temperature inside the clothes during the wearing test.

[0028]

The present invention has the following excellent effects. (1) When worn under direct sunlight, the rise in the temperature inside the clothes is suppressed and the cool feeling is excellent. (2) It also has an ultraviolet shielding effect. (3) There is little discoloration during processing, and the strength of the fabric is not significantly reduced. (4) Excellent wash durability. (5) It can also be used in combination with other functional processing such as water absorption and quick drying.

[Brief description of drawings]

FIG. 1 is a temperature inside a garment as measured by a wearing test using the knitted fabrics of Example of the present invention and Comparative Example 2.

Claims (3)

[Claims] 1. A cellulosic fiber woven or knitted fabric having coolness, characterized in that acrylic beads having a particle diameter of 0.1 to 20 μm are attached to the surface of the fiber. 2. A cellulosic fiber woven or knitted fabric having a particle diameter of 0.
Acrylic beads of 1 to 20 μm with a concentration of 1 to 30% by weight,
And a method for producing a cellulosic fiber woven or knitted fabric having a cool feeling, which comprises impregnating an aqueous dispersion containing a binder resin in a concentration of 0.1 to 10% by weight, squeezing, and then drying. 3. The method for producing a cellulosic fiber woven or knitted fabric having a cool feeling according to claim 2, wherein the impregnation is performed by padding.