JPH0641802A - Underwear composed of fiber containing metal - Google Patents

Abstract

PURPOSE:To obtain the underwear having good heat insulating effects by mix spinning polyurethane elastic fiber containing a metallic oxide such as alumina and platinum as essential components therein. CONSTITUTION:The objective underwear is obtained by mixing one more metallic oxides selected from alumina, silica and titania as an essential component in polyurethane elastic fiber (preferably spandex) and mix spinning 2-5% resultant polyurethane elastic fiber containing the metallic oxides with cotton fiber so as to arrange the cotton fiber on the contact side with the human body.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a garment made of a metal-containing fiber, and its purpose is to provide excellent flexibility and feel when worn, and to provide a comfortable wearing feeling, and a contact feeling to be felt during wearing. It is intended to provide an underwear made of a fiber containing a metal capable of exhibiting an extremely good heat retaining effect such as a low thermal conductivity during wearing and an increase in blood flow at a wearing site.

[0002]

2. Description of the Related Art In general, cotton, nylon, polyester, acrylic, urethane fibers and the like are used as fiber materials for men's underwear such as long-sleeved shirts, short-sleeved shirts and under pants, and women's underwear for French sleeves, short sleeves and shorts. It is often used, and these fiber materials are appropriately selected according to the wearing season, and the fibers are mixed and spun at an arbitrary ratio to form an underwear. For example, summer underwear is composed of a fiber material mainly composed of cotton from the viewpoint of breathability and hygroscopicity, while winter underwear is intended to improve heat retention in addition to the above-mentioned fiber material. In many cases, it is made by blending wool.

Further, in recent years, there has been an underwear in which a fiber mixed with far-infrared emitting ceramics is used as a constituent material in anticipation of the thermal effect of far-infrared rays. This underwear is, for example, alumina, zirconia,
A far-infrared radiation substance such as magnesia was contained in a polyethylene or polyamide fiber material having high transparency to far-infrared radiation, and the fiber material containing the far-infrared radiation substance was further coated with a protective layer to form the film. It was an underwear in which fibers were used as a part of the constituent fibers, and the underwear was constructed with the expectation of a heat retaining effect by wearing.

[0004]

However, in the underwear in which the wool is blended as described above, a sufficient heat retaining effect is not easily exhibited unless the wool blending rate is increased, but the wool blending rate is increased for the purpose of enhancing the heat retaining effect. If it is too high, the underwear itself will feel bulky, and it will feel uncomfortable as "underwear" that is worn directly on the skin and is the underwear for blouses, etc., and it does not give a comfortable wearing feeling, and the wearer's exercise There was a problem that it was difficult to wear because it suppressed the sex.

On the other hand, undergarments mixed with far-infrared radiation ceramics eliminate the feeling of bulkiness as compared with underwear of wool blended fabrics, but unless a wide range of fiber materials containing far-infrared radiation substances is used. There was a problem that it was difficult to obtain the effect. Furthermore, in this underwear, the far infrared ray emitting layer is protected by providing a covering layer, but since this covering layer absorbs far infrared rays, there is a problem that far infrared rays emitted from ceramics cannot be effectively used. did. Therefore, in this underwear, for example, in the contact feeling felt during wearing, the thermal conductivity during wearing, and the skin temperature after wearing, the effect of far infrared rays cannot be effectively exerted to the maximum extent,
There was a problem that an excellent heat retaining effect could not be expected.
Therefore, in the industry, it is desired to create an undergarment that gives a wearer a comfortable wearing feeling, feels contact when wearing, thermal conductivity during wearing, works well on a wearing site, and can exhibit extremely excellent heat retention. Was there.

[0006]

According to the present invention, alumina,
Polyurethane elastic fiber mixed with at least one metal oxide selected from silica and titania and platinum as essential components is composed of a fiber material mixed and spun in a range of 2 to 50%. By providing an underwear made of a fiber containing the above, the above-mentioned conventional problems are solved.

[0007]

[Function] The wearer feels comfortable to wear, and by mixing the metal oxide and the metal into the polyurethane elastic fiber, the elasticity of the polyurethane elastic fiber is used to release the metal oxide from the metal oxide. Since the electromagnetic waves are radiated in a state of being in close contact with the wearer, the effect of the electromagnetic waves (far infrared rays) is maximally acted, and the feeling of contact during wearing, the thermal conductivity during wearing, and the blood flow at the wearing site are improved. It acts effectively and can exhibit a good heat retaining effect.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION The constitution of the underwear made of fibers containing a metal according to the present invention will be described in detail below. In the present invention, alumina (Al ₂ O ₃ ) and silica (Si
O ₂ ), a fiber in which polyurethane elastic fibers mixed with at least one metal oxide selected from titania (TiO ₂ ) and platinum (Pt) as essential components are mixed within a range of 2 to 50%. The material is the constituent fiber. Alumina (Al ₂ O ₃ ), silica (SiO ₂ ) and titania (TiO ₂ ) used in the present invention have a particle size of 1 μm.
The following powders are preferably used, but are not particularly limited. Further, as platinum (Pt), a colloidal one having a fine particle diameter of 7 to 40Å is preferably used. The reason for this is that colloidal platinum (P
This is because it is based on the experimental knowledge by the present inventor that good heat retention characteristics can be obtained by using t).
The mixing ratio of these metal oxides and platinum is 9 to 45% for alumina (Al ₂ O ₃ ) and 5 for silica (SiO ₂ ).
0 to 80%, titanium (TiO ₂ ) and / or platinum (Pt) are set to about 8 to 15%, but are not particularly limited. Further, these metal oxides may be mixed with an oxide such as calcium, zinc or copper in an amount of about 2 to 10%. From the metal oxide having such a constitution, as is apparent from the test examples described later, it is considered that 5 to 1 is effective for the human body.
Electromagnetic waves (far infrared) having a wavelength range of 2 microns are 3
Radiation is stable and sufficient even in the temperature range around 0 ° C.

The polyurethane elastic fiber mixed with metal oxide and platinum is not particularly limited, and comprises a non-crystalline segment composed of a polyester or polyether portion and a crystalline segment having a urein bond, etc. The spandex generally used for is preferably used. The method of mixing the metal oxide and platinum into the polyurethane elastic fiber is not particularly limited, and the polymerized fiber material solution may be mixed in a dispersed state in the solution before dry spinning, or may be dry type. It can be appropriately employed without being mixed in the spinning or any method is limited. The amount of the metal oxide mixed in the polyurethane elastic fiber is not particularly limited,
It emits electromagnetic waves (far-infrared rays) having a wavelength range of about 5 to 12 microns, which is effective for the human body in a temperature range of about 30 ° C, and has a good effect on contact feeling and thermal conductivity when worn, and is excellent. Any blending amount can be appropriately adopted as long as it is a blending amount capable of exhibiting a heat retaining effect, is within a range in which it can be spun as a constituent fiber material for underwear, and does not impair the wearing feeling.

In the present invention, the reason why the polyurethane elastic fiber is used in particular is that by blending the polyurethane elastic fiber having a high elasticity, the wearing feeling of underwear is improved and the polyurethane elastic fiber is mixed with the above-mentioned metal. By mixing oxide and platinum,
Since the electromagnetic waves (far infrared rays) from metal oxides can be radiated into the body while wearing the underwear on the wearer's human body, the effect of the emitted electromagnetic waves (far infrared rays) can be utilized to the maximum, and it feels when wearing underwear. Electromagnetic waves (far-infrared rays) effectively act on the feeling of contact and thermal conductivity, resulting in excellent effects such as high temperature fluctuations in the body after wearing, and blood flow at the wearing site is likely to rise, resulting in This is because it is possible to exhibit an excellent heat retaining effect.

Polyurethane in which at least one metal oxide selected from the above-mentioned alumina (Al ₂ O ₃ ), silica (SiO ₂ ), titania (TiO ₂ ) and platinum (Pt) are mixed as essential components. Elastic fibers are blended with other conventional fiber materials and made into underwear in the usual manner. At this time, the polyurethane elastic fiber mixed with the metal oxide needs to be mixed in the range of 2 to 50%. The reason for this is that if the mixing ratio of the polyurethane elastic fiber mixed with the metal oxide is less than 2%, the effective emission of electromagnetic waves from the metal oxide utilizing the elasticity of the polyurethane elastic fiber is not effectively performed. It does not exhibit excellent heat retention properties. On the other hand, if it exceeds 50%, the skin feel given to the wearer becomes poor, and some people may develop allergic symptoms. is there.

As the other fiber material mixed with the polyurethane elastic fiber, ordinary natural and synthetic fiber materials such as cotton, hemp, wool, acrylic, polyester and nylon are preferably used, and any of these fiber materials can be used. There is no particular limitation as long as it is appropriately mixed and spun to give underwear. In particular, when cotton fibers are mixed-spun, and the cotton fibers are mixed and spun so as to be arranged on the side of the contact surface with the human body, the underwear is preferably used as underwear for winter due to the heat retaining property of the cotton fibers. Alternatively, when this cotton fiber is mixed and spun so as to be arranged on the side opposite to the human body, it is preferably used as underwear for summer due to the heat dissipation property of the cotton fiber.
The underwear included in this invention is not particularly limited, and includes undershirts, running shirts, briefs, pants,
Examples include normal underwear for men such as under pants, and normal underwear for women such as shorts, a tank top, a panty hose, seven-quarter sleeves, and French sleeves.

[0013]

EXAMPLES The effects of the underwear made of the metal-containing fiber according to the present invention will be further clarified below with reference to Examples. (Example 1) Alumina (Al ₂ O ₃ ), silica (SiO 2
₂ ), 15% polyurethane elastic fiber mixed with metal oxide (10: 82: 3: 5) composed of titanium (TiO ₂ ) and platinum (Pt) and 85% cotton are mixed and spun by a usual method. Women's French sleeve underwear was created. (Comparative Example 1) A French sleeve underwear for women was prepared in the same manner as in Example 1 except that polyurethane elastic fiber containing no metal oxide was used. (Comparative Example 2) Alumina (Al ₂ O ₃ ), silica (SiO 2
₂ ), titanium (TiO ₂ ), platinum (Pt) metal oxide (10: 82: 3: 5) 1.7% mixed with polyurethane elastic fibers mixed with cotton 98.3% A French sleeve underwear for women was created by the method. (Comparative Example 3) A French sleeve undergarment for women was prepared in the same manner as in Comparative Example 2 except that polyurethane elastic fiber containing no metal oxide was used.

(Test Example 1) The basis weight (g / g) of each of the women's underwear obtained in Example 1 and Comparative Examples 1 to 3 was tested.
m ² ), thickness (cm), contact feeling (Q max), steady thermal conductivity (W /
The physical properties such as cm ° C. × 10 ⁻⁴ ) and the heat retention rate (%) were measured by Thermolabo 2-KES7 (manufactured by Kato Tech Co., Ltd .: thermophysical property measuring device). The results are shown in Table 1.

[Table 1]

(Test Example 2) Using the women's underwear obtained in Example 1 and Comparative Examples 1 to 3, a biometric test was conducted. First, for the women's underwear of Example 1 and Comparative Example 1, the skin temperature (minimum value, average value, maximum value) of the back part before and after wearing the underwear by the same panelist was measured.
In this measurement, the heat retention temperature by the underwear after the wearing time of about 1200 seconds and the skin temperature of the back part immediately after undressing and about 66 seconds after undressing were measured. Further, the total temperature fluctuation value of the skin temperature of the back part in underwear was calculated. Next, the same panelists similarly measured the women's underwear of Comparative Examples 2 and 3. In addition, the measurement of the skin temperature in this test was performed using a thermograph (6T manufactured by NEC Sanei).
/ 62 type (HgCdTe sensor, 8 ~ 13μm): Infrared radiation thermometer -50 ° ~ 2000 °) Image analysis of specific region of thermogram obtained from thermal analysis From minimum value, average value and maximum value of temperature distribution Each was calculated. The results are shown in Table 2.

[Table 2]

(Test Example 3) The blood flow rate (ml / min / 100 g) when the women's underwear of Example 1 and Comparative Example 1 were each worn by two panelists and kept warm for a certain period of time was laser Doppler blood. Rheometer (Advanced Company: ALF-21)
Laser Doppler method using a laser
Vol 12.No1, 7.1988). The results are shown in Table 3.

[Table 3]

As is clear from Table 1, when the blending ratio of the polyurethane elastic fiber is 15%, the women's underwear mixed with the metal oxide (Example 1) and the women's underwear not mixed with the metal oxide are shown. Comparing with (Comparative Example 1), it can be seen that since the feeling of contact is small, the coldness felt when wearing is small, and the steady thermal conductivity is small, the temperature fluctuation due to the cold air of the outside air is small and the heat retention rate is high. In addition, when the blending ratio of polyurethane elastic fibers is low (1.7%) (Comparative Example 2), it is not so effective in keeping warmth with ladies' underwear (Comparative Example 3) using polyurethane elastic fibers containing no metal oxide. It can be seen that the effect is not expressed. As is clear from Table 2, when the blending ratio of polyurethane elastic fiber is 15%, the women's underwear mixed with metal oxide (Example 1) is more susceptible to metal oxidation in terms of heat retention and heat radiation balance after wearing underwear. It can be seen that the average temperature difference is 0.6 ° C higher than that of women's underwear (Comparative Example 1) in which nothing is mixed, and the heat retention effect is high. On the contrary, when the blending ratio of the polyurethane elastic fiber is low (Comparative Examples 2 and 3), it is understood that the heat retaining effect by wearing underwear is not exhibited. As is clear from Table 3, it is understood that the blood flow in the women's underwear of Example 1 tends to increase due to heat retention, as compared with the women's underwear in Comparative Example 1.

(Example 2) Alumina (Al ₂ O ₃ ), silica (SiO ₂ ), titanium (TiO ₂ ), platinum (P
A fiber was prepared by mixing 15% polyurethane elastic fiber mixed with the metal oxide (10: 82: 3: 5) consisting of t) and 85% cotton. (Example 3) The same fibers as in Example 2 were mixed-spun with 18% polyurethane elastic fiber and 82% cotton to prepare a fiber. (Example 4) A fiber was prepared by blending 28% of polyurethane elastic fiber and 72% of cotton in the same manner as in Example 2 above. (Example 5) The same fiber as in Example 2 was prepared by mixing 50% polyurethane elastic fiber and 50% staple fiber. (Example 6) 17% of polyurethane elastic fiber and 83% of nylon were mixed and spun in the same manner as in Example 2 to prepare a fiber.

Test Example 4 The spectral emissivity spectra of the fibers obtained in Examples 2 to 6 were measured.
The measurement conditions are: wavelength range: 4.5-20.0 μm, resolution: 1
6 cm ⁻¹ , detector: wide range MCT, measurement temperature: surface temperature of textile material 33 ° C., measurement position and number of times: 2 positions at different positions, 2 times at the same position, a total of 4 times of measurement. The obtained spectral emissivity spectra are shown in FIGS. 1 to 5. As is clear from the obtained spectral emissivity spectra, in each of the fibers obtained in Examples 2 to 6, an electromagnetic wave (far infrared ray) having a wavelength range of about 5 to 12 microns, which is effective for the human body, is generated. It can be seen that it is released even in the relatively low temperature range of 33 ° C.

[0020]

As described in detail above, the present invention has 2 to 50% or more of polyurethane elastic fiber in which platinum is mixed with at least one metal oxide selected from alumina, silica and titania as essential components. Since it is an underwear made of fibers containing a metal, which is made of a mixed fiber material, the underwear itself has almost no bulkiness, and a comfortable wearing feeling such as flexibility and elasticity can be obtained when worn. At the same time, electromagnetic waves (far-infrared rays) generated by the metal oxide are radiated in close contact with the wearer by utilizing the elasticity of the polyurethane elastic fiber. Electromagnetic waves (far infrared rays) are effectively acted on the contact feeling and the thermal conductivity during wearing, and an excellent effect of exhibiting an extremely good heat retention effect is exhibited.

[Brief description of drawings]

FIG. 1 is a chart of the spectral emissivity spectrum of the fiber obtained in Example 2.

2 is a chart of a spectral emissivity spectrum of the fiber obtained in Example 3. FIG.

FIG. 3 is a chart of the spectral emissivity spectrum of the fiber obtained in Example 4.

FIG. 4 is a chart of the spectral emissivity spectrum of the fiber obtained in Example 5.

FIG. 5 is a chart diagram of a spectral emissivity spectrum of the fiber obtained in Example 6.

Claims (3)

[Claims] 1. A polyurethane elastic fiber having 2 to 5 polyurethane mixed with platinum and at least one metal oxide selected from alumina, silica and titania as essential components.
An underwear made of a fiber containing a metal, which is made of a fiber material mixed in a range of 0%. 2. The metal-containing fiber according to claim 1, wherein cotton fiber is mixed-spun into the fiber material, and the cotton fiber is mixed-spun so as to be disposed on the side of the contact surface with the human body. Underwear made of. 3. The metal according to claim 1, wherein cotton fibers are mixed-spun to the fiber material, and the cotton fibers are mixed-spun so as to be arranged on the side of the surface opposite to the human body. Underwear made of fibers.