JP3776116B1 - Textile products with batting - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a low-cost, comfortable and comfortable cotton-filled fiber product that can contribute to the health promotion of a user by synergistically acting far infrared rays and negative ions.
SOLUTION: A mattress 11 is formed by wrapping a batting 11 containing a far-infrared radioactive fiber with a surface material 12. Contains a fine powder of natural radioactive rare element mineral that emits one or both of α-rays and β-rays and does not emit γ-rays in at least the region of the surface material 12 that contacts the human body B (preferably the entire region on the upper surface side) The functional cloth 12a including the negative ion generating fiber is used. A comforter 20 is formed by wrapping a padding 21 containing a far-infrared radioactive fiber with a surface material 22. The functional cloth 22a containing the negative ion generating fiber is used in at least a region (preferably the entire region on the lower surface side) of the outer material 22 that contacts the human body B.
[Selection] Figure 1

Description

  The present invention relates to a fiber product containing batting such as a bedding for a bedding formed by wrapping batting with a surface.

  Conventionally, far-infrared rays have been recognized to have a micromassage action in which cells are activated by energy of a wavelength that is easily absorbed by water molecules of the human body and blood flow is improved. In addition, negative ions generated from minerals containing natural radioactive rare elements increase the oxygen supply rate in the body, weaken the blood, make blood purification, metabolism promotion, mental stabilization, autonomic nervous control, bactericidal immunity, etc. Health promoting action has been confirmed.

Conventionally, a technique has been proposed that achieves both an effect of far-infrared radiation and an action of negative ions in a fiber product containing batting such as a futon or a mattress. For example, Patent Document 1 describes a futon using a “minus ion emitting fiber” in which fine particles of a natural radioactive rare element mineral are fixed to the surface of a polyester fiber containing a far-infrared radioactive compound, as a duvet cotton. Patent Document 2 describes a futon provided with a net-like wrapping bag containing “ceramic balls” that generate far-infrared rays and negative ions. In addition, Patent Documents 3 and 4 can be cited.
JP 2004-68215 A JP 2004-57504 A Registered Utility Model No. 3069707 JP 2002-339252 A

  However, according to the futon of Patent Document 1, since the far-infrared radioactive compound and the natural radioactive rare element mineral particles are included in the fiber constituting the futon cotton, the amount of high-performance fiber used is bulky, and the production cost of the futon is high. There was a problem of being expensive. The futon of Patent Document 2 combines the far-infrared effect and the negative ion effect in the form of a “ceramic ball”, so that even if a local effect on the human body can be expected, the effect on the entire sleeping human body is exerted. However, when used in large quantities, there was a problem that the futon became heavy and the sleeping comfort became worse.

  An object of the present invention is to solve the above-mentioned problems and provide an inexpensive and comfortable sleeping fiber product that can contribute to the health promotion of the user by synergistically acting far infrared rays and negative ions.

  In order to solve the above-mentioned problems, the fiber product with batting of the present invention wraps the batting containing far-infrared radioactive fibers with a surface material, and at least one of α rays and β rays in the region that contacts the human body of the surface material or It is characterized by using a functional cloth including a negative ion generating fiber containing fine powder of a natural radioactive rare element mineral that emits both and does not emit γ rays. Natural radioactive rare element mineral is synonymous with natural radiation rare element mineral, and negative ion generating fiber is synonymous with negative ion radioactive fiber.

  Here, the fiber product with batting is not particularly limited. For example, various kinds of bedding (bedclothes, comforters), skin comforters, pillows, mattresses, sleeping bags, bed pads, gowns, pajamas, etc. Mention may be made of textile products.

  In the case of bedding for bedding, a natural radioactive rare that does not emit γ rays by radiating either or both of α rays and β rays to the entire area on the upper surface side of at least the upper surface of the outer wrapping padding containing far-infrared radioactive fibers. Wrap a mattress using a functional cloth containing anion-generating fibers containing fine powder of elemental minerals and a padding containing far-infrared emitting fibers with a surface material, and at least the entire area on the lower surface side of the surface is alpha and beta rays It is preferable to use a comforter made of a functional cloth including a negative ion-generating fiber containing fine powder of a natural radioactive rare element mineral that emits one or both of them and does not emit γ rays.

[About batting]
Part or all of the batting can be composed of far-infrared radioactive fibers. A far-infrared radioactive fiber is a fiber containing a far-infrared radioactive substance.
The fiber is not particularly limited, and examples thereof include natural fibers, synthetic fibers, and natural / synthetic mixed fibers.
Although it does not specifically limit as a far-infrared radioactive substance, Far-infrared radioactive ceramics, such as a titanium oxide and a silica, can be illustrated.
As for the content rate of the far-infrared radioactive substance in a fiber, 0.3-8 mass% is preferable.
The method of containing the far-infrared radioactive substance with respect to the fiber is not particularly limited, and it may be adhered to the fiber surface or kneaded into the fiber material, but kneading is preferable in that the substance does not fall off even after cleaning.
Specific examples of preferable far-infrared radioactive fibers include synthetic fibers (polyester fibers, rayon fibers, etc.) in which a far-infrared radioactive substance is kneaded at a ratio of 0.3 to 8% by mass.
As for the mixing rate of the far-infrared radioactive fiber with respect to batting, 30-100 mass% is desirable. If the mixing ratio is less than 30% by mass, the amount of far infrared radiation tends to be insufficient.

[About the dress material]
On the outer surface, negative ion generating fiber containing fine powder of natural radioactive rare element mineral that emits one or both of α ray and β ray and does not emit γ ray to the area in contact with the user's body. Including functional cloth. This negative ion generating fiber generates negative ions in the surrounding air by ionization.
The fiber is not particularly limited, and examples thereof include natural fibers, synthetic fibers, and natural / synthetic mixed fibers.
Although it does not specifically limit as a natural radioactive rare element mineral which radiates | emits any one or both of (alpha) rays and (beta) rays, and does not radiate | emit γ rays, Xenotime can be illustrated preferably. Xenotime emits both α and β rays.
As for the content rate of the fine powder of the natural radioactive rare element mineral in a fiber, 0.3-8 mass% is preferable.
The method of containing fine powder of natural radioactive rare element mineral for the fiber is not particularly limited and may be adhered to the fiber surface or kneaded into the fiber material, but kneaded in that the substance does not fall off even after cleaning. Is preferred.
Specific examples of preferable negative ion generating fibers include synthetic fibers (polyester fibers, rayon fibers, etc.) in which the fine powder of the natural radioactive rare element mineral is kneaded at a ratio of 0.3 to 8% by mass.
The mixing ratio of the synthetic fiber to the functional fabric is preferably 30 to 100% by mass. When the mixing ratio is less than 30% by mass, the negative ion radiation amount (generated amount) tends to be insufficient.

[About α rays, β rays, and γ rays]
The radiation emitted from natural radioactive rare element minerals is generally weak, and when it is contained in the fiber, its content is limited, so that adverse effects on the human body are not normally considered. However, in the present invention, in order to ensure further safety and security, natural radioactive rare element minerals that emit either one or both of α rays and β rays and do not emit γ rays are selected and used. .
In other words, the dose limit of the public set by the national radiation protection standards is 1 mSv / year, but this indicates the γ dose received from nuclear power generation, medical related, etc., excluding the exposure received from the natural world. On the other hand, α rays and β rays are generally considered to have no adverse effects on the human body in the case of external exposure. Therefore, in the present invention, γ rays are considered strictly, and are limited to those that do not radiate.

  Due to the action of α rays and β rays, negative ions are generated in the air in the vicinity of the functional cloth even when the functional cloth is stationary. And it is preferable that the negative ion in the air which contacts a functional cloth in the state which left the functional cloth stationary is 1000 pieces / ml (cc) or more, and 1000-3000 pieces / ml is more preferable.

  The fiber product with batting of the present invention emits far infrared rays from the batting, emits negative ions from the surface (generates in the air), and exhibits a hormesis effect (hot spring effect) due to the synergistic action of far infrared rays and negative ions. . In particular, since negative ions are emitted from a region in contact with the human body in the form of a cloth, the user can receive an appropriate amount of negative ions efficiently and stably, and a comfortable sleeping comfort and comfort can be obtained. Further, there is an advantage that a relatively inexpensive material is used for bulking batting and the manufacturing cost of the fiber product containing the batting can be reduced.

  Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings. As shown in FIG. 1, this embodiment is a bedding for a bedding, which is configured by combining a mattress 10 and a comforter 20, and the characteristic configuration of the present invention is embodied in each of the mattress 10 and the comforter 20. .

  The mattress 10 is configured by wrapping a batting 11 with a surface material 12. The batting 11 includes a far-infrared radioactive fiber. A functional cloth 12a containing negative ion generating fibers is used for the entire outer surface 12 (the entire area on the upper surface side and the entire area on the lower surface side). In the outer fabric 12 of the mattress 10, the region that frequently contacts the human body B is the central portion on the upper surface side, but in this example, the functional fabric 12a is used for the entire region on the upper surface side that may contact the human body B. Furthermore, the functional cloth 12a is also used in the entire area on the lower surface side so that the functional cloth 12a comes into contact with the human body B even when the mattress 10 is inverted.

  The comforter 20 is configured by wrapping a batting 21 with a surface material 22. The batting 21 contains far-infrared radioactive fibers. For the outer material 22, a cloth that does not include negative ion generating fibers is used in the entire area on the upper surface side, and a functional cloth 22a that includes negative ion generating fibers is used in the entire area on the lower surface side. In the outer fabric 22 of the comforter 20, the region that frequently contacts the human body B is the central portion on the lower surface side, but in this example, the functional fabric 22 a is used for the entire region on the lower surface side that may contact the human body B. Yes.

  Next, examples of the present invention will be described. In this embodiment, paddings 10 and 21 having the same composition are used for the mattress 10 and the comforter 20, and functional fabrics 12 a and 22 a having the same composition are used for the outer materials 12 and 22. In the following description, “%” is based on mass.

  Far infrared radiation ceramics (fine powders of zirconia, titania, silica and rare earth) were mixed in 1% in polyester fibers to obtain far infrared radiation polyester fibers. And batting 11 and 21 were manufactured with this polyester fiber 100%. However, you may mix the normal polyester fiber which does not contain a far-infrared radiation ceramic.

  A mixture of fine powder of xenotime, which is a natural radioactive rare element mineral, and fine powders of zirconium, titanium oxide, quartz and diorite, which are other minerals (as will be described later, 1540-1665 ions / ml are allowed to stand. The material to be radiated) was kneaded in 5% by mass in the polyester fiber to obtain a negative ion generating (radioactive) polyester fiber. Functional fabrics 12a and 22a were woven with 100% of the polyester fibers. However, you may mix the normal polyester fiber which does not contain this mineral fine powder.

  The outer fabric 12 was sewn using the functional cloth 12a on the upper surface side and the lower surface side, and 1.6 kg of the batting 11 was wrapped with the outer fabric 12, and the mattress 10 was manufactured. Further, an ordinary cotton cloth was used on the upper surface side and a surface cloth 22 was sewn using a functional cloth 22a on the lower surface side.

[Measurement of γ dose]
First, with respect to the functional cloths 12a and 22a, the γ dose was measured by the following method.
Measurer: Radiation Measurement Association, Japan Measurement method: Direct survey method using NaI scintillation type survey meter: “TCS-171 / R05869” manufactured by Aloka
Sample: Sample measurement section cut out from a functional cloth into a square of about 30 cm x about 30 cm: As shown in FIG. .
Measurement result: The γ-dose equivalent rate in the background (when no sample was present) was 0.07 μSv / h. On the other hand, the γ-dose equivalent rate of the sample was 0.07 μSv / h.
Consideration of measurement results: Since the γ-dose equivalent rate 0.07 μSv / h of the samples of the functional cloths 12a and 22a was not different from that of the background, it was found that γ rays were not emitted from the functional cloths 12a and 22a. . Therefore, as a matter of course, there is no adverse effect on the human body. In addition, since the equivalent dose rate of 0.07 μSv / h to 0.67 mSv / year is 0.61 mSv / year, it is within the range of 2.4 mSv / year, which is considered to be the amount of exposure received from the natural world (world average). is there.

[Measurement of α-ray and β-ray dose]
Next, the doses of α rays and β rays were measured for the functional cloths 12a and 22a by the following method.
Measurer: Inventor of the present application Measuring method: Direct survey method measuring instrument using GM survey meter: “RAM GENE” manufactured by Sangyo Kagaku Co., Ltd.
Sample: Sample measurement section cut out into a square of about 30 cm x about 30 cm from the functional cloth: As shown in Fig. 23 (b), the survey meter detection unit was applied to the center of the sample in a vertical posture 1m above the floor. . The survey meter waited for 1 minute after the power switch was turned on and stabilized, and then applied to the sample, and then the average value for 1 minute was obtained.
Measurement result: The dose equivalent rate in the background (when no sample was present) was 53 cpm. In contrast, the dose equivalent rate of the sample was 138 cpm. Incidentally, the dose equivalent rate of the batting 11 and 21 by the far-infrared radiation polyester fiber was not different from that of the background.
Consideration of measurement results: Although the GM survey meter responds to any of α rays, β rays, and γ rays, it has been found by the above measurement that γ rays are not emitted from the functional cloths 12a and 22a. Therefore, it can be said that the dose equivalent rate of the functional cloths 12a and 22a detected by the GM survey meter by this measurement is due to α rays or β rays that are considered to have no adverse effect on the human body as described above. However, the meter cannot distinguish between alpha rays and beta rays.

[Measurement of negative ions]
Next, with respect to the functional cloths 12a and 22a, the amount of negative ions generated was measured by the following method.
Measurer: Japan Spinning Inspection Association Kinki Plant Measuring method: Ion counter method Measuring instrument: Eco-holistic "Ion Counter EB-12A"
Sample: Sample measurement cut out into a square of about 30 cm x about 30 cm from the functional cloth: As shown in Fig. 23 (c), the sample counter is placed on the sample while the sample is left still, and the sample is placed on the sample. The number of negative ions in contacted air was measured.
Measurement result: The number of negative ions in the air in the measurement chamber when there was no background sample was 43 / ml. On the other hand, the number of negative ions in the air in contact with the sample in a stationary state was 1540 to 1665 / ml.
Consideration of measurement results: Even when the functional cloth is left standing, the generation of a large number of negative ions is considered to be an action (ionization action, etc.) caused by α-rays or β-rays from natural radioactive rare element minerals.

  Next, using the mattress 10 and the comforter 20 of this embodiment, a clinical experiment by a plurality of subjects for medically verifying the action effect was performed at the Masuko Memorial Hospital (Nakamura-ku, Nagoya-shi, Aichi Prefecture). The measurement was performed by Mr. Chizuru Susaki, an inspection engineer. Further, for comparison, the mattresses and comforters of the following comparative examples 1 to 3 were also performed. The contents and results are as follows.

<Comparative Example 1> Those which do not emit far-infrared rays or negative ions in FIG. 2a Normal mattress 101 and comforter 201
<Comparative Example 2> The mattress 102 and the comforter 202 that emit only negative ions in FIG. 2b: the same functional cloth as that of the embodiment is used in the same region only for the front cloth, and ordinary batting is used for the batting.
<Comparative Example 3> The mattress 103 and the comforter 203 that emit only far-infrared rays in FIG. 2c: the same batting as in the embodiment is used only for the batting, and an ordinary cloth is used for the front cloth.
<Example> The comforter 10 and the comforter 20 that radiate both far infrared rays and negative ions in FIG. 2d.

<Subject>
The subjects were healthy men and women in their 20s (no particular anemia).
Subject A: Age 21 years old, male, height 181.2 cm, weight 68.8 kg
Daily drinking is a little. No cigarette. Subject B: Age 21 years old, male, height 188.5 cm, weight 83.2 kg
A little daily drinking, no cigarettes Subject C: Age 21 years, female, height 160.6 cm, weight 60.6 kg
Daily drinking is a little. No tobacco. Subject D: Age 20 years old, female, height 162.2cm, weight 53.2kg
Daily drinking is a little, cigarettes are a little. Subject E: Age 20 years old, female, height 152.4 cm, weight 50.0 kg
Daily drinking is a little. No tobacco. Subject F: Age 20 years old, female, height 160.8 cm, weight 56.9 kg
A little daily drinking, no tobacco

<Procedure>
The meal was finished by 9:00 pm the previous day, and after that it was fasted (however, drinking including soft drinks is allowed). On the day, there was no breakfast and we gathered at 9:00 am and executed the following program. During the break, in principle, the patient was rested and hydrated with 50 to 150 ml.
First examination / blood collection: In an electroencephalogram measurement room at a constant room temperature, it was performed after changing into a gym suit prepared in advance and resting for a while.
Second inspection and blood collection: After sleeping for 30 minutes in the mattress 101 and the comforter 201 of Comparative Example 1, the futon was taken out.
Third examination / blood sampling: After leaving the futon of Comparative Example 1 and sitting on it for a 1 hour rest, sleeping on the mattress 102 and the comforter 202 of Comparative Example 2 for 30 minutes, and then leaving the futon.
Fourth examination / blood collection: After leaving the futon of the comparative example 2 and sitting on it, resting for 1 hour, sleeping in the mattress 103 and the comforter 203 of comparative example 30 for 30 minutes, and then leaving the futon.
Fifth inspection / blood collection: After leaving the futon of Comparative Example 3 and sitting on it for a 1 hour rest, sleeping on the mattress 10 and the comforter 20 of the example of the present invention for 30 minutes, the futon was taken out.

<Content of inspection>
[1] MC-FAN (Microchannel array Flow Analyzer): This test examines the state of the collected blood based on the passage time (flow velocity) per unit distance. ". “MC-FAN Blood Smooth Monitor KH-3” manufactured by Hitachi High-Technologies Corporation was used as the testing device.
[2] Blood test (biochemistry and blood cell test): The collected blood was analyzed by a specialized institution.
[3] Thermograph: The temperature of the hands of subjects E and F (average value of each fingertip of five fingers and one place on the back) and the temperature of the foot (average value of each fingertip of five fingers and one place on the back) Is measured.

<Inspection result>
[1] Results of MC-FAN As shown in FIG. 3, in subjects A, B, C, and D, the blood transit time was shortened at the third time exposed to negative ions, and at the fourth time exposed to far-infrared rays. It became longer and significantly shorter at the fifth exposure to both negative ions and far infrared radiation. This is presumed to be a result of the blood flow of the subject being improved by the synergistic effect of the blood vessel expansion action mainly by far infrared rays and the blood fluidity increase action mainly by negative ions. In addition, although the numerical value was abnormally high at the 1st and 2nd times of the subject A, it is considered that this is because the subject A was busy and suffered mental stress in daily life. In addition, the fourth time of the subject D is presumed to be a technical problem (chip cleaning or the like). In subject E, there was almost no change, and in subject F, the blood passage time became longer in the fifth time.

[2] Results of blood test FIGS. 4 to 21 show the results of five blood component tests for subjects A to F. FIG. All test results are based on reports passed from the hospital to the subjects.
1. Total cholesterol (FIG. 4): No significant difference is observed.
2. Neutral fat (Fig. 5): Some people fell in the 5th time, but it is unknown whether it was a significant difference.
3. Blood glucose (FIG. 6): Overall, it tends to increase at the fifth time.
4). LDL-cholesterol (FIG. 7): No significant difference is observed.
5. HDL-cholesterol (FIG. 8): No significant difference is observed.
6). White blood cells (FIG. 9): Some people have decreased in the fifth round, but the cause is unknown.
7). Red blood cells (Figure 10)
8). Hemoglobin (Figure 11)
9. Hematocrit (FIG. 12): These red blood cells, hemoglobin, and hematocrit tend to decrease overall at the fifth time, but this may be due to the effects of hydration during breaks. In addition, it is thought that it is aggregation that there exists a remarkable fall in these numerical values in the test subject A 2nd time.
10. MCV (red blood cell size) (FIG. 13): MCV values of subjects C, D, E, and F decreased at the fifth time.
11. MCH (amount of hemoglobin contained in individual erythrocytes) (FIG. 14): subjects A, D and E tend to increase.
12 MCHC (ratio of hemoglobin contained in individual erythrocytes) (FIG. 15): The subjects A, D, and E tend to increase.
13. Platelet count (FIG. 16): Significance was not recognized.
14 Baso (basophil) (Figure 17)
15. Eosino (eosinophil) (Figure 18)
16. Neutro (neutrophil) (Figure 19)
17. Lymph (lymphocyte) (FIG. 20)
18. Mono (monocyte) (FIG. 21): Based on the overall downward trend of Baso, Eosino, and Neutro and the overall upward trend of Lymph, some clinical trials may occur in terms of infection, immunity, and allergy. The unique subject A shows a tendency opposite to this and reflects the MC-FAN data.

[3] Results of Thermograph FIG. 22 shows temperature changes in the hands and feet of subjects E and F. Test subjects E and F are both female, but the temperature of the hands and feet is higher in the fifth time exposed to both negative ions and far infrared rays compared to the third time exposed to negative ions and the fourth time exposed to far infrared rays. It became high. This is probably because blood circulation in peripheral blood vessels has increased. Thus, a remarkable result was obtained in a woman who is said to have a lot of coldness.

In addition, this invention is not limited to the said Example, For example, as follows, it can also change suitably in the range which does not deviate from the meaning of invention, and can also be embodied.
(1) In the outer material 12 of the mattress 10, a cloth that does not contain negative ion generating fibers may be used for the entire area on the lower surface side.
(2) In the outer fabric 22 of the comforter 20, a functional cloth containing a negative ion generating fiber may be used in the entire area on the upper surface side.
(3) Only the mattress 10 may be implemented, or only the comforter 20 may be implemented.
(4) In addition to bedding, be embodied in skin comforters, pillows, mattresses, sleeping bags, bed pads, gowns, pajamas, etc.

It is sectional drawing which shows the mattress and the comforter of the Example which concerns on this invention. It is sectional drawing which shows the mattress and the comforter used for the clinical experiment. It is a graph which shows the test result which concerns on blood passage time. It is a graph which shows the test result which concerns on total cholesterol. It is a graph which shows the test result concerning neutral fat. It is a graph which shows the test result which concerns on blood glucose. It is a graph which shows the test result which concerns on LDL-cholesterol. It is a graph which shows the test result which concerns on HDL-cholesterol. It is a graph which shows the test result which concerns on leukocytes. It is a graph which shows the test result which concerns on erythrocytes. It is a graph which shows the test result which concerns on hemoglobin. It is a graph which shows the test result which concerns on hematocrit. It is a graph which shows the test result concerning MCV. It is a graph which shows the test result concerning MCH. It is a graph which shows the test result concerning MCHC. It is a graph which shows the test result which concerns on the number of platelets. It is a graph which shows the test result concerning Baso. It is a graph which shows the test result which concerns on Eosino. It is a graph which shows the test result concerning Neutro. It is a graph which shows the test result which concerns on Lymph. It is a graph which shows the test result concerning Mono. It is a graph which shows the test result of a thermograph. It is explanatory drawing which shows each measuring method of (a) gamma dose, (b) alpha ray or beta ray, and (c) negative ion by a functional cloth.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Textile product with batting 10 Mattress 11 Filling 12 Outer fabric 12a Functional cloth 20 Comforter 21 Filling 22 Outer fabric 22a Functional cloth B Human body

Claims (6)

  A fine powder of natural radioactive rare element mineral that wraps a cotton pad containing far-infrared radioactive fibers with a surface material and emits either or both of α-rays and β-rays and does not emit γ-rays in at least a region of the surface that contacts the human body. A fiber product containing batting characterized by using a functional cloth containing a negative ion generating fiber containing. Wrapping padding containing far-infrared radioactive fibers with a surface material, fine powder of natural radioactive rare element mineral that does not emit γ-rays by emitting either or both of α-rays and β-rays at least on the upper surface side of the surface material A mattress using a functional cloth containing a negative ion-generating fiber,
Wrapping padding containing far-infrared radioactive fibers with a surface material, fine powder of natural radioactive rare element mineral that does not emit γ-rays by emitting either or both of α-rays and β-rays at least on the lower surface side of the surface material A bedding for a bedding comprising a comforter made of a functional cloth containing a contained negative ion generating fiber.   The said far-infrared radioactive fiber is a synthetic fiber which knead | mixed the far-infrared radioactive substance, The textile product containing bedding or the bedding for bedding.   The said negative ion generating fiber is a synthetic fiber which knead | mixed the fine powder of a natural radioactive rare element mineral, The textile product containing bedding or the bedding for bedding as described in any one of Claims 1-3.   The said natural radioactive rare element mineral is xenotime, The textile product containing bedding or the bedding for bedding as described in any one of Claims 1-4.   The fiber product or bedding blanket with batting according to any one of claims 1 to 5, wherein the number of negative ions in the air in contact with the functional cloth in a state where the functional cloth is left still is 1000 / ml or more.

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