JPWO2016072433A1 - Hazardous substance removal sheet and product using the same - Google Patents

Abstract

An object of the present invention is to provide a harmful substance removing sheet capable of removing harmful substances such as pollen, house dust, virus, PM2.5, etc. adhering to the human body, particularly skin, by a simple method. The harmful substance removal sheet of the present invention is a harmful substance removal sheet for removing harmful substances attached to the body, and includes a base sheet composed of a nonwoven fabric having a basis weight of 30 to 200 g / m2, The base sheet is impregnated with liquid, and the amount of liquid impregnation is 0.6 g or more per gram of base sheet.

Description

  The present invention relates to a harmful substance removal sheet for removing harmful substances adhering to the body. More specifically, the present invention relates to a harmful substance removal sheet suitable for removing harmful substances such as pollen adhering to the skin. The present invention relates to a product for removing harmful substances used and a method for removing harmful substances attached to the body.

Human health is greatly influenced by the surrounding environment. For example, pollen and house dust induce allergic symptoms such as hay fever, and viruses attached to the body, such as influenza viruses, may cause infection by entering the body. In recent years, it has also been pointed out that particulate matter having a particle size of 2.5 μm or less (so-called PM2.5) may induce diseases such as bronchitis.
Therefore, if there is a means for removing the harmful substances adhering to the body by a simple method and keeping the body clean at all times, it will be very useful for prevention of various diseases.

Many proposals have been made for sheets made of nonwoven fabric suitable for cleansing the skin.
For example, Patent Document 1 discloses a technique in which a sheet made of a nonwoven fabric is impregnated with a specific nonionic surfactant, an acrylate polymer, and water, and the skin is cleaned using this.
Patent Document 2 discloses a technique in which a sheet made of a nonwoven fabric is impregnated with a specific anionic surfactant, a polyether compound and water, and the skin is washed using the impregnated surfactant.

Japanese Unexamined Patent Publication No. 2013-53148 Japanese Unexamined Patent Publication No. 2003-81752

  However, all of the above prior arts are intended to remove sebum and makeup stains, and harmful substances that may affect human health, such as pollen, house dust, allergens, influenza, etc. There is no disclosure or suggestion of a method for removing viruses, PM2.5, yellow sand and the like, specifically, a method for removing the harmful substances attached to human skin.

  Therefore, the present invention provides a harmful substance removal sheet that can remove the above-mentioned harmful substances attached to the human body, particularly the skin, by a simple method, a harmful substance removal product using the same, and a harmful substance attached to the body. It is an object of the present invention to provide a method for removing the above.

  As a result of intensive studies to solve the above-mentioned problems, the present inventors have found that a sheet formed by impregnating a non-woven fabric having a specific area weight per unit area with a specific amount of liquid can solve the above-described problems, and completes the present invention. It came to.

That is, the present invention is achieved by the following (1) to (6).
(1) A harmful substance removing sheet for removing harmful substances attached to the body, comprising a base sheet made of a non-woven fabric having a basis weight of 30 to 200 g / m ² , and a liquid in the base sheet And the amount of impregnation of the liquid is 0.6 g or more per 1 g of the base sheet.
(2) The harmful substance removing sheet according to (1), wherein the liquid includes at least one selected from water, lower alcohols and polyhydric alcohols.
(3) The harmful substance removal sheet according to (1) or (2), wherein the harmful substance is at least one of pollen and particulate matter (PM2.5) having a particle size of 2.5 μm or less.
(4) The hazardous substance removing sheet according to any one of (1) to (3), wherein at least one surface of the base sheet is uneven.
(5) A hazardous substance removing product in which the harmful substance removing sheet according to any one of (1) to (4) is housed in a moisture-impermeable and liquid-impermeable packaging material.
(6) A method for removing harmful substances adhering to the body, comprising a base sheet composed of a nonwoven fabric having a basis weight of 30 to 200 g / m ² , wherein the base sheet is impregnated with a liquid, A method for removing harmful substances, wherein the liquid-impregnated amount is 0.6 g or more per 1 g of the base sheet to contact a harmful substance removing sheet with the skin of the body.

The harmful substance removal sheet of the present invention includes a base sheet composed of a nonwoven fabric having a basis weight of 30 to 200 g / m ² , the base sheet is impregnated with a liquid, and the amount of liquid impregnation is the base material. Since it is 0.6 g or more per 1 g of the sheet, when the toxic substance-removing sheet is contacted with the skin and wiped off, the skin is removed from the human skin having extremely fine irregularities on the surface. There is an effect that it is possible to easily remove harmful substances attached to the surface.
Moreover, since the harmful substance removal sheet of the present invention can satisfactorily remove pollen such as cedar pollen and PM2.5 adhering to the skin, it is useful as a pollen removal sheet or a particulate matter removal sheet. is there.

FIG. 1 is a perspective view of a hazardous substance removing sheet of the present invention. FIG. 2 is a graph showing the harmful substance removal rate (%) calculated in Example 1. FIG. 3 is a graph showing the harmful substance removal rate (%) calculated in Example 2. FIG. 4 is a graph showing the harmful substance removal rate (%) calculated in Example 3. 5 is a graph showing the harmful substance removal rate (%) calculated in Example 4. FIG. FIG. 6 is a graph showing the results of sensory evaluation tested in Example 5. FIG. 7 is a graph showing the harmful substance removal rate (%) calculated in Reference Example 1.

Hereinafter, the present invention will be described in more detail.
In the present specification, all percentages expressed by mass are the same as percentages expressed by weight.
The harmful substance removal sheet of the present invention is a sheet for removing harmful substances adhering to the body, and includes a base sheet composed of a nonwoven fabric having a basis weight of 30 to 200 g / m ^2. The sheet is impregnated with liquid, and the amount of liquid impregnation is 0.6 g or more per 1 g of the base sheet.

As shown in FIG. 1, the base material sheet 1 constituting the harmful substance removing sheet 10 of the present invention has a first surface 1a and a second surface 1b (hereinafter simply referred to as a first surface and a second surface). It is a thin shape having a “surface” and is composed of a nonwoven fabric having a basis weight of 30 to 200 g / m ² .

The nonwoven fabric used in the present invention is not particularly limited as long as it has a basis weight of 30 to 200 g / m ² . For example, the nonwoven fabric formed from natural fiber or synthetic fiber is mentioned, Specifically, the nonwoven fabric formed from raw materials, such as rayon, acetate, an acryl, polyester, polyethylene, polypropylene, polyurethane, polyamide, cotton, a pulp, is mentioned. It is done. Among these, rayon, cotton, polyester, and the like are preferable from the viewpoints of removal of harmful substances, per skin, and availability.

Basis weight of the nonwoven fabric is important to be 30 to 200 g / ^{m 2,} when the basis weight is less than 30 g / ^{m 2,} or if it exceeds 200 g / ^{m 2} is good for removing harmful substances adhering to the body It may not be possible. In other words, the basis weight of the nonwoven fabric of 30 to 200 g / m ² can be said to be a specific range in which harmful substances attached to the body, particularly harmful substances attached to the skin can be removed well. It is preferable that the fabric weight of a nonwoven fabric is 30-100 g / m < ² > from a viewpoint of improving a usability | use_condition.

  Moreover, 0.001-100 denier is preferable and the fineness of the fiber which comprises a nonwoven fabric from a viewpoint that the effect of this invention improves is more preferable 0.01-30 denier. The denier is a unit representing the fineness (thickness) of the fiber, and is represented by a mass (g) of a 9000 m yarn. Moreover, 0.001-100 micrometers is preferable and, as for the diameter of the fiber which comprises a nonwoven fabric, 0.1-50 micrometers is more preferable.

  In the present invention, at least one surface of the base sheet 1 (that is, at least one of the first surface 1a and the second surface 1b) may be provided with irregularities by embossing, drilling, or the like. By subjecting the surface of the base sheet 1 to uneven processing, harmful substances are easily held on the surface of the base sheet, and the removal effect can be enhanced. Moreover, it can adapt to the rheology of human skin having extremely fine irregularities on the surface, and can efficiently remove attached harmful substances.

  The thickness of the base sheet 1 used in the present invention is not particularly limited, and can be appropriately set from the viewpoints of usability, manufacturing stability, strength, liquid impregnation properties, and the like. The thickness of the base sheet 1 is preferably 20 to 1500 μm, for example, and more preferably 40 to 1200 μm. In addition, the thickness of the base material sheet 1 is substantially equal to the thickness of the harmful substance removing sheet 10.

The harmful substance removing sheet of the present invention is impregnated so that the liquid is 0.6 g or more per 1 g of the base sheet. When the amount of impregnation of the liquid per 1 g of the base sheet is less than 0.6 g, the harmful substances attached to the skin may not be removed well. The liquid impregnation amount per 1 g of the base sheet is preferably 1.0 g or more.
Further, the upper limit of the amount of impregnation of the liquid is not particularly limited, and it may be as long as the liquid does not drip within one second when picking up one corner of the base sheet. In the state where the liquid is dripped, the liquid exceeding the amount that the base sheet can carry will be separated, so the body using the harmful substance removal sheet impregnated with the liquid exceeding the amount supported by the base sheet Even if the harmful substances attached to the body are removed, the harmful substances may flow out without staying on the harmful substance removal sheet, and may adhere to another part of the body or clothing. In addition, a harmful substance removing sheet in which a liquid is dripping is not practical because it is inferior in use feeling. From such a viewpoint, the upper limit of the liquid impregnation amount is preferably 6.5 g per 1 g of the base sheet, and more preferably 4.0 g.

In the present invention, the liquid impregnation amount represents the amount of liquid impregnated per 1 g of the base sheet (hereinafter referred to as liquid impregnation amount), and is calculated by the following equation.
Liquid impregnation amount (g / g) = amount of liquid impregnated into base material sheet (g) / weight of base material sheet (g)

  The liquid impregnated in the base sheet is not particularly limited as long as it does not cause harm to the human body from the viewpoint of application to human skin. For example, water such as purified water, distilled water, ion exchange water; lower alcohols such as ethyl alcohol and isopropyl alcohol; polyhydric alcohols such as ethylene glycol, propylene glycol, butylene glycol, diethylene glycol, dipropylene glycol, and glycerin Sugar alcohols such as sorbitol, polyalkylene ethers such as polyethylene glycol, and the like. The liquid may be used alone or in combination of two or more. Among them, it is preferable to use a liquid containing water as a main component (50% by mass or more, preferably 80% by mass or more) because it has less irritation to the skin and can reduce material costs. Also good.

  In addition, non-ionic surfactants such as polyoxyethylene hydrogenated castor oil; humectants such as ceramide, glycosylceramide, collagen, hyaluronic acid, sodium hyaluronate; 1-menthol, d-menthol, dl- A refreshing agent such as menthol; a preservative such as methylparaben and phenoxyethanol; a polymer compound such as cationized cellulose and hydroxypropyl chitosan; a pH adjuster; and a fragrance can be appropriately blended as necessary. When mix | blending these components, 0.001-10 mass% can be mix | blended in a liquid, respectively.

  In the present invention, inorganic powders such as talc, mica, anhydrous silicic acid, and calcium carbonate can be added to the liquid in order to improve the feeling of use. By blending the inorganic powder, the slipping property when the harmful substance removing sheet touches the skin is improved, and the feeling of use can be enhanced.

  The method for impregnating the base sheet with the liquid is not particularly limited. For example, an immersion method in which the base sheet is immersed in a container containing the liquid and impregnation is performed by spraying the liquid onto the base sheet. Examples thereof include a spraying method and a liquid dropping method in which a liquid is dropped into a substrate sheet to be impregnated.

  The harmful substance removal sheet of the present invention is used to remove harmful substances that adhere to the human body, particularly the skin, against the will. Examples of harmful substances include pollen, house dust, virus, particulate matter having a particle size of 2.5 μm or less (PM2.5), yellow sand, bacteria, mold, and the like. The harmful substance removal sheet of the present invention can effectively remove pollen such as cedar pollen and PM2.5 adhering to the skin, and thus is particularly useful as a pollen removal sheet or a particulate matter removal sheet. .

  The harmful substance removal sheet of the present invention is preferably stored in a moisture-permeable and liquid-impermeable bag-shaped packaging material before use. This form is advantageous for portability.

  When using the harmful substance removing sheet of the present invention, the harmful substance attached to the body can be easily and satisfactorily removed by, for example, contacting the skin and wiping once or multiple times. .

  Hereinafter, although an example and a comparative example explain the present invention in detail, the present invention is not limited to these examples.

Example 1
The following nonwoven fabric was prepared as a substrate sheet. Specifically, “TCF-205WJ” (trade name) manufactured by Futamura Chemical Co., Ltd. was used.
Material: Rayon Weight per unit: 50 g / m ²
Thickness: about 0.2mm
Dimensions: 160mm x 200mm
Mass: 1.6g
Diameter of fibers constituting the nonwoven fabric: 20 μm (average value)

  Purified water was dropped into the base sheet in the form of droplets and impregnated to prepare various harmful substance removal sheets (specimens 1 to 6). The amount of purified water used in specimens 1 to 6 and the amount of liquid impregnation per gram of base sheet are as shown in Table 1.

A circular artificial skin having a diameter of 5 cm ("Bio Skin No. 10A" (trade name) manufactured by Beaulux Co., Ltd.) was prepared, and threads were attached to both ends on the diameter of the circle. Prepare a corrugated cardboard box (25cm x 25cm x 22cm) containing approximately 0.5g of pseudo-pollen Ishimatsuko (spider of lizard spider, APPIE standard powder) as a harmful substance, and artificial skin is located in the center of the cardboard box Thus, the thread attached to both ends of the artificial skin was affixed to the inner wall of the cardboard with an adhesive tape so as not to loosen. The cardboard box was turned upside down and rotated 10 times continuously (about 18 seconds), and the harmful substances were soared in the box to promote the attachment of the harmful substances to the surface of the artificial skin.
Thereafter, the number of harmful substances adhering to the artificial skin (hereinafter referred to as the number of skin adhesions) was observed with a microscope, and the number of skin adhesions was measured. As a measuring method, the number of skin attachments was measured at any three points (measurement area: 5.8 mm × 8.0 mm = 46.4 mm ² ) on the upper, middle and lower parts of the artificial skin, and the average value of the three points was obtained. .
Subsequently, the harmful substance removal sheet of each specimen was wound around the index finger, and the harmful substance was wiped off by moving the edge from both ends of the artificial skin to which this harmful substance was adhered once from right to left. The number of harmful substances remaining on the artificial skin (hereinafter referred to as the number of remaining skins) was observed again, the number of remaining skins at any three points was measured by the above measuring method, and the average value of the three points was determined.
Then, the removal rate (henceforth a removal rate) of a harmful substance was computed with the following formulas.
Removal rate of harmful substances (%) = [(number of skin adhered to Ishimatsuko-number of remaining skin of Ishimatsuko) / (number of skin adhered to Ishimatsuko)] × 100
The results are shown in Table 2 and FIG.

  From the results of Table 2 and FIG. 2, it was found that Samples 3 to 6 had a removal rate of 90% or more, and had an excellent removal effect of harmful substances (pseudo pollen). Even if a small amount of harmful substances are attached to the body and invade the body, it affects human health. Therefore, it is necessary to remove harmful substances without leaving them. Therefore, by setting the liquid impregnation amount to 0.6 g or more per 1 g of the base sheet, the effect of removing harmful substances from the skin can be remarkably enhanced, thereby greatly reducing the intake of harmful substances into the body. be able to.

(Example 2)
For removal of various harmful substances using a nonwoven fabric (dimensions: 50 mm × 50 mm) having a basis weight described in Table 3 as a base sheet, impregnating with purified water dropwise and setting the liquid impregnation amount to 0.625 g / g Sheets (Samples 7 to 12) were prepared.

By the same test method as in Example 1, the test was performed using artificial skin to which Ishimatsuko (pseudo pollen), which is a harmful substance, was attached.
The results are shown in Table 4 and FIG.

From the results of Table 4 and FIG. 3, it was found that Samples 8 to 11 had a removal rate of 90% or more, and had an excellent removal effect of harmful substances (pseudo pollen). From this, using a nonwoven fabric with a basis weight in the range of 30 to 200 g / m ² as the base sheet, and making the amount of liquid impregnation 0.6 g or more per 1 g of the base sheet significantly enhances the harmful substance removal effect. I found out that This can greatly reduce the intake of harmful substances into the body.

From the results of Example 1 and Example 2, the basis weight of the nonwoven fabric constituting the base sheet is set to 30 to 200 g / m ² and the liquid impregnation amount is set to 0.6 g or more per 1 g of the base sheet. As a result, it was found that the ability to remove harmful substances from the skin was remarkably enhanced.

(Example 3)
The following nonwoven fabric was prepared as a substrate sheet. Specifically, “TCF-205WJ” (trade name) manufactured by Futamura Chemical Co., Ltd. was used.
Material: Rayon Weight per unit: 50 g / m ²
Thickness: about 0.2mm
Dimensions: 160mm x 200mm
Mass: 1.6g
Diameter of fibers constituting the nonwoven fabric: 20 μm (average value)

1 g of the impregnating solution described in Table 5 was dropped onto the substrate sheet and impregnated to prepare various harmful substance removing sheets (specimens 13 to 15). The liquid impregnation amount per 1 g of the base material sheet in the specimens 13 to 15 was 0.625 g / g.
By the same test method as in Example 1, the test was performed using artificial skin to which Ishimatsuko (pseudo pollen), which is a harmful substance, was attached.
The results are shown in Table 5 and FIG.

  From the results of Table 5 and FIG. 4, the removal rate is 95% or more in any of 95% ethanol, 1,3-butylene glycol and purified water, and a high removal effect of harmful substances (pseudo pollen) can be obtained. I understood.

Example 4
Various harmful substance removal sheets in which a nonwoven fabric (dimensions: 50 mm × 50 mm) of the material shown in Table 6 is used as a base sheet, and purified water is dropped and impregnated to set the liquid impregnation amount to 0.625 g / g. (Samples 16 to 20) were prepared.

By the same test method as in Example 1, the test was performed using artificial skin to which Ishimatsuko (pseudo pollen), which is a harmful substance, was attached.
The results are shown in Table 7 and FIG.

  From the results of Table 7 and FIG. 5, the removal rate is 97% or more when any non-woven fabric of rayon, cotton and mixed materials is used as the material of the base sheet used for the skin, and the harmful substances (pseudo It was found that a high pollen removal effect can be obtained.

(Example 5)
Each component described in Table 8 was stirred, mixed and dissolved at room temperature (about 25 ° C.) to prepare a liquid impregnation solution.
Non-woven fabric (material: rayon, basis weight: 50 g / m ² , thickness: 0.2 mm, dimensions: 160 mm × 200 mm, mass 1.6 g, fiber diameter (average): 20 μm) as a base sheet, The sheet was dropped and impregnated to prepare a harmful substance removing sheet (specimen 21). The amount of liquid impregnation per 1 g of the base material sheet in the harmful substance removing sheet was 0.625 g / g.
Fifteen sheets of the prepared harmful substance removing sheets were stacked and placed in a container (bag) sealed with an aluminum laminate film. The container is provided with an opening on a side surface, and the opening can be opened and closed with a hermetic seal.

During the period from early April to late May, when pollen is relatively high, 11 panelists (male) who suffered from hay fever regularly used a harmful substance removal sheet for a long time. Sensory evaluation was conducted on the feeling of use (the effect of removing harmful substances).
When I was concerned about hay fever, such as sneezing, stuffy nose, itchy eyes, etc., I removed the hermetic seal of the container, took out one sheet for removing harmful substances, and wiped off the skin's worrisome parts. . After the start of use, after one bag (15 sheets) was used up, the following questions were asked and evaluated in five stages. The results are shown in FIG.
<Question>
Did you feel that you have removed allergens such as pollen, house dust, viruses such as influenza, PM2.5, and yellow sand using the sheet for removing harmful substances?
<Evaluation items>
1. I felt very much. I felt a little. I can say neither. I didn't feel much. I didn't feel

From the results shown in FIG. 6, 36% answered "I felt very much" and 64% answered "I felt a little". That is, the result that it was felt that the harmful substances could be removed by using the harmful substance removing sheet of the present invention was obtained.
Therefore, it has been confirmed that by using the harmful substance removal sheet of the present invention, the removal of the harmful substance attached to the skin can be surely realized as a sensation.

(Reference Example 1)
The harmful substance removal sheets for specimens 7 and 10 prepared in Example 2 were used. In addition, the same base sheet (nonwoven fabric not impregnated with purified water) used for the specimens 7 and 10 was used as the specimens 22 and 23.
A flooring board (material: hippo, thickness 12mm, size 50mm x 50mm) is prepared, and this is used as a harmful substance. 25 cm × 25 cm × 22 cm) was attached to the center of the side surface with double-sided tape. The corrugated cardboard box was rotated 10 times to the left every 90 degrees (for about 18 seconds), and the harmful substances were soared in the box to promote the adhesion of the harmful substances to the surface of the flooring board.
Thereafter, the number of harmful substances adhering to the surface of the flooring plate (hereinafter referred to as the number of flooring adhesion) was observed with a microscope, and the number of flooring adhesion was measured. As a measuring method, the number of flooring adhesions at any three points (measurement area: 5.8 mm × 8.0 mm = 46.4 mm ² ) on the upper, middle and lower parts of the flooring plate was measured, and the average value of the three points was obtained. .
Subsequently, the specimens 7, 10, 22, and 23 were wound around the index finger, and the harmful substances were wiped off by moving the edges from right to left once along the eyes of the flooring board to which the harmful substances were adhered. The number of harmful substances remaining on the flooring plate (hereinafter referred to as “flooring remaining number”) was observed again, and the number of remaining three flooring points was measured by the above measuring method, and the average value of the three points was determined. Thereafter, the removal rate of harmful substances was calculated by the following formula.
Removal rate of harmful substances (%) = [(number of flooring deposits of Ishimatsuko−number of remaining floorings of Ishimatsuko) / (number of flooring adhesions of Ishimatsuko)] × 100
The results are shown in Table 9 and FIG.

From the results of Table 9 and FIG. 7, in the case of using a flooring plate having no irregularities such as human skin, the removal rate is high regardless of the basis weight of the nonwoven fabric used for the base sheet and the presence or absence of liquid impregnation. It turns out that.
From this, it can be seen that the harmful substance removal sheet having the basis weight and the liquid impregnation amount of the present invention has a remarkable effect of removing harmful substances attached to the human body, particularly the skin.

  Below, a prescription example in implementing the sheet | seat for hazardous | toxic substance removal which concerns on this invention is shown.

  Although the present invention has been described in detail and with reference to specific embodiments, it will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the invention. This application is based on a Japanese patent application filed on November 4, 2014 (Japanese Patent Application No. 2014-224333), the contents of which are incorporated herein by reference.

DESCRIPTION OF SYMBOLS 1 Base sheet 1a Front surface 1b Back surface 10 Harmful substance removal sheet

Claims (6)

A harmful substance removal sheet for removing harmful substances attached to the body,
Comprising a base sheet composed of a nonwoven fabric having a basis weight of 30 to 200 g / m ² ;
A sheet for removing harmful substances, wherein the substrate sheet is impregnated with a liquid, and the amount of the liquid impregnated is 0.6 g or more per 1 g of the substrate sheet.   The harmful substance removing sheet according to claim 1, wherein the liquid contains at least one selected from water, lower alcohols and polyhydric alcohols.   The harmful substance removal sheet according to claim 1 or 2, wherein the harmful substance is at least one of pollen and particulate matter (PM2.5) having a particle size of 2.5 µm or less.   The harmful substance removal sheet according to any one of claims 1 to 3, wherein at least one surface of the base sheet is uneven.   A hazardous substance removing product, wherein the harmful substance removing sheet according to any one of claims 1 to 4 is housed in a moisture-impermeable and liquid-impermeable packaging material. A method for removing harmful substances attached to the body,
A base sheet made of a nonwoven fabric having a basis weight of 30 to 200 g / m ² is provided, the base sheet is impregnated with a liquid, and the amount of impregnation of the liquid is 0.6 g or more per gram of the base sheet A method for removing harmful substances by bringing a sheet for removing harmful substances into contact with the skin of the body.

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