JP2000005290A - Deodorizing sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a deodorizing sheet which has outstanding deodorizing effect and also has outstanding persistence of the deodorizing effect. SOLUTION: A deodorizing sheet has a central layer which includes charcoals i.e., a ceramic coal and the like and tourmaline. It is preferable that the central layer is laminated with a cushion layer which is made of a cotton-like material that is impregnated with an ingredient which is extracted from trees, furthermore, covered with a side cloth which is made of an organic fiber that has a metal-containing carboxy group. The deodorizing sheet is used for a bed pad and the like suitably.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deodorant sheet for eliminating, reducing or preventing malodor. INDUSTRIAL APPLICABILITY The deodorant sheet of the present invention is useful as bedding and rugs for humans or animals, and is particularly preferably used as bedding for humans.

[0002]

2. Description of the Related Art For the purpose of removing body odor, living odor, excrement odor and the like generated from humans or animals, a mat (Japanese Utility Model Application Laid-Open No. 54-124713) in which activated carbon is enclosed has been proposed and processed into a sheet. Mattresses using activated carbon are commercially available. However, when charcoal such as activated carbon is used as a deodorant, the effect is temporary, but the deodorization effect is poorly sustained, and the malodor component once adsorbed due to temperature change etc. is released again. There was a problem. Furthermore, it has been difficult to remove a more intense odor by using only charcoal.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to provide a deodorizing sheet having a high deodorizing effect and excellent in the persistence of the deodorizing effect.

[0004]

In order to solve the above-mentioned problems, the deodorizing sheet according to the first aspect is characterized in that it has a central layer containing charcoal and tourmaline.

[0005] The term "charcoal" used herein refers to a material that is not limited to charcoal such as Bincho charcoal, white charcoal, and black charcoal, but includes a wide range of organic carbides. Further, so-called "ceramic charcoal" may be used, such as one obtained by adhering an organic carbide to a ceramic porous body or one obtained by coating the surface of a carbide with a ceramic. Is preferably used. The ceramic charcoal is sold, for example, by Hibino Dyeing Factory.

[0006] Tourmaline is a naturally occurring ore, and generates negative ions by heating or pressurizing. This tourmaline, which is also called tourmaline, is an ore that has a unique, though weak, property of having a permanent electrode. This tourmaline ore is composed of polyhedral polar crystals, and its crystal structure is maintained even when pulverized. Therefore, the shape of tourmaline used in the deodorant sheet of the present invention is not particularly limited, and an appropriate shape may be selected according to the structure of the deodorant sheet, the purpose of use, and the like. Further, there is no particular limitation on the particle size when powdered tourmaline is used.

Although the mechanism of the deodorant sheet of the present invention is not clear, it exhibits high deodorizing performance due to a synergistic effect of charcoal and tourmaline and is excellent in sustainability of the deodorizing performance.
Because of these characteristics, the deodorant sheet of the present invention can be used as, for example, a futon, a bed pad, a mattress, a carpet, a cushion, a cushion, and the like for humans, and a mattress and a cushion for animals such as pets. In particular, it is suitable as bedding (eg, bed pad) used in hospitals, nursing homes, and the like. It is known that tourmaline has a deodorizing effect, but the deodorizing performance is synergistically improved by using tourmaline in combination with charcoal, and the deodorizing effect of charcoal is used in combination with tourmaline. There is no known improvement in sustainability.

The "center layer" in the present invention is preferably a foamed sheet made of various resins having carbons and tourmaline inside or on the surface (hereinafter referred to as "deodorant foamed sheet"). As a method for producing such a deodorant foamed sheet, a method of mixing a powder of charcoal and tourmaline into a resin composition and then foaming the resin composition,
A method in which a foamed sheet is formed in advance from a resin composition, and then a powder of charcoal and tourmaline is adhered to the surface of the foamed sheet. In the former case, the charcoal and tourmaline have the advantage of being difficult to peel off.In the latter case, the charcoal and tourmaline are arranged on the surface of the central layer, so that the outside air containing malodorous components and the charcoal and tourmaline can be efficiently used. There is an advantage that the contact can be made well. Note that either one of charcoal and tourmaline may be disposed inside the foam sheet, and the other may be disposed on the surface of the foam sheet. However, as described above, in the deodorant sheet of the present invention, charcoal and tourmaline are used. Since excellent deodorizing performance can be obtained by the synergistic effect of the above, it is preferable that both are disposed at the same or close positions.

[0009] As a foamed sheet obtained by mixing ceramic charcoal as a charcoal with a resin composition and foaming, "Deo E sheet" or the like manufactured by Marutoku Co., Ltd. is commercially available. As the central layer of the present invention, a foamed sheet obtained by further adding tourmaline powder to a resin composition as a raw material of the sheet and foaming the resin composition is preferably used. Further, a sheet formed by mixing tourmaline and ceramic charcoal in a resin composition consisting of a biodegradable resin and corn starch, and then foaming the mixture.
Alternatively, a sheet in which ceramic charcoal is adhered or arranged on the surface of a sheet formed by mixing tourmaline with this resin composition and foaming can be used as the central layer of the present invention.

When the deodorant foamed sheet as described above is used as the central layer, the carbon and tourmaline contained in the central layer each have an average particle size of about 0.1 to 1000 μm (more preferably 5 to 100 μm). Is preferably in the form of a powder. By having the particle size in this range, the feeling of use becomes good when used as the deodorant sheet of the present invention and the bedding or cushion, and when the carbonaceous or tourmaline is mixed with the resin composition and then foamed, these are used. Can be easily dispersed uniformly in the resin.

In the present invention, this center layer can be used alone as a deodorant sheet. However, it is preferable that at least a part of the center layer be a deodorant sheet wrapped in a side cloth. More preferably, it is wrapped in a side cloth. This protects the central layer and improves the feeling of use because the central layer containing charcoal and tourmaline does not directly touch the skin and the like, and also makes it difficult for the charcoal and tourmaline to peel off from the central layer.

Although the material of the "side fabric" is not particularly limited, it is preferable to use a side fabric made of an organic fiber having a metal-containing carboxyl group. That is, the deodorant sheet according to the second aspect is the first aspect.
The deodorant sheet according to any one of the preceding claims, comprising the central layer and a side cloth surrounding the center layer, wherein the side cloth is made of an organic fiber having a metal-containing carboxyl group.

The above-mentioned "organic fiber having a metal-containing carboxyl group" may be obtained by graft-copolymerizing a monomer containing a carboxyl group to the fiber, or synthesizing the fiber using a polymer or a copolymer containing a carboxyl group. Can be obtained by producing a carboxyl group-containing fiber by any of the above methods, and binding a metal ion to the carboxyl group. Examples of the organic fiber include natural fibers such as silk, wool, and cotton; synthetic fibers such as polyester, nylon, vinylon, and acrylic; and semi-synthetic fibers such as rayon, cupra, acetate, and promix.
Further, as the metal ion to be bonded to the carboxyl group, an ion of a fiber metal such as copper, zinc, iron, nickel, cobalt and silver is generally used.

Although such a side cloth itself has deodorizing performance, it has a synergistic effect with the charcoal and tourmaline contained in the central layer, so that it is compared with a case where another material is used as the side cloth. The performance of the deodorant sheet of the present invention is significantly improved. The side cloth may be composed of only “organic fibers having a metal-containing carboxyl group”, and the other fibers may have 10% by weight or more (more preferably 20% by weight or more) of “organic fibers having a metal-containing carboxyl group” in other fibers. ) It may be mixed. As the side dough that is particularly preferably used in the present invention, “Sanderon Fine” (trade name, manufactured by Nippon Silk Wool Dyeing Co., Ltd.) is 20% by weight or more (more preferably 50% by weight or more, further preferably 80% by weight or more).
And mixed dough.

When the deodorant sheet of the present invention is used for applications requiring cushioning properties such as futons, bed pads, mattresses, cushions, cushions, etc., the center layer and the center layer are used for the purpose of improving the usability. It is preferable to provide a deodorizing sheet having a structure in which at least one cushion layer laminated on a layer is wrapped by a side cloth. Here, the cushion layer is preferably made of "a cotton-like material impregnated with a tree-extracting component".

That is, the deodorant sheet according to claim 3 is
3. The deodorant sheet according to claim 1, wherein the side cloth wraps the center layer and at least one cushion layer laminated on the center layer, and the cushion layer is impregnated with a tree extract component. It is characterized by being made of a material.

The above-mentioned "tree extraction component" includes, for example,
A liquid extract obtained by extracting and separating from leaves of a camellia plant such as tea, sasanqua, camellia, sakaki, and hisakaki can be mentioned. Also, as the material of the "cotton-like material", cotton,
Any of natural fibers such as feathers, cellulose-based semi-synthetic fibers, and synthetic fibers made of polyester, polypropylene, polyacrylonitrile, and the like may be used.

By providing a cushion layer made of such a material, a cushioning property is imparted to the deodorant sheet, whereby the feeling of use is improved. The cushion layer itself also has deodorant performance, but due to a synergistic effect with the carbon and tourmaline contained in the central layer, the performance of the deodorant sheet of the present invention is higher than when the cushion layer is made of another material. Is significantly improved. In addition, this cushion layer may be composed of only a “cotton-like material impregnated with a tree-extracting component”, and the other material contains 30% by weight or more (more preferably) of a “cotton-like material impregnated with a tree-extracting component”. Is 60% by weight or more). As the cushion layer of the present invention, trade name “Fresh Coal” manufactured by Teijin Limited
And the like are preferably used. Further, as the cotton-like material forming the cushion layer, it is preferable to use “Hybal NS” (trade name, manufactured by Teijin Limited).

The cushion layer may be laminated on only one surface of the center layer, or may be laminated on both surfaces. Further, the cushion layer may be laminated on the entire area of the center layer or on only a part thereof, but is preferably laminated on the entire area. The thickness of this cushion layer is
2 mm to 500 mm in a state where a deodorant sheet is configured
It is preferable that If the thickness of the cushion layer is less than 2 mm, sufficient cushioning properties may not be provided.
On the other hand, if the thickness of the cushion layer exceeds 500 mm, the distance between the outside air containing the malodorous component and the center layer containing the charcoal and tourmaline becomes too large, and the deodorizing efficiency may be reduced.

The preferable content of carbon and tourmaline in the center layer varies depending on the structure and use of the deodorant sheet, but as described in claim 4, the content of carbon is 0.001 to 20% by weight (more Preferably 0.01 to 1
5% by weight, more preferably 0.05 to 10% by weight) and tourmaline 0.001 to 10% by weight (more preferably 0.005 to 10% by weight, further preferably 0.01% by weight).
To 8% by weight).

When the deodorizing sheet of the present invention is used as a bed pad, it is obtained by foaming a resin composition to which ceramic charcoal powder and tourmaline powder are added, as described in claim 6, The center layer composed of a deodorant foamed sheet having a powder content of 0.001 to 20% by weight and the tourmaline powder content of 0.001 to 10% by weight, and a tree extract component added to cotton made of synthetic fiber. It consists of a cotton-like material impregnated, two cushion layers laminated on both sides of the central layer, and an organic fiber having a metal-containing carboxyl group, and a side cloth wrapping the central layer and the cushion layer. It is preferable to have a configuration.

[0022] The deodorant sheet of the present invention may have a configuration in which a far-infrared material is further wrapped in the side cloth. Here, the term “far-red material” refers to a material other than charcoal and tourmaline that can efficiently emit far-infrared rays, and specifically, zirconia, titania, alumina, cordierite, β
-Spodumene, aluminum titanate, other transition metal oxide-based ceramics, and composite ceramics containing these. The far-infrared material may be mixed or adhered to the center layer and / or the cushion layer, or a layer such as a foam sheet containing the far-infrared material may be separately provided and laminated with these layers in any order. . As an example of the “foam sheet containing far-infrared material” (hereinafter referred to as “far-infrared foam sheet”), a sheet obtained by mixing a far-infrared material with a resin composition composed of bran and polyolefin to form a foam is used. No. Commercial products of far-infrared foamed sheets using polypropylene as the polyolefin include “Okapack Sheet S” manufactured by Daiko Co., Ltd.

By using the far-infrared material, a deodorant sheet having a deodorizing effect and an effect of preventing or reducing pressure sores can be obtained. It is known that charcoal and tourmaline, which are components for deodorizing, also have a far-infrared ray radiating effect, and the far-infrared ray effect is enhanced when used in combination with the above far-red material. Also, when using a far-red foam sheet obtained by mixing a far-infrared material with a resin composition composed of a bran and a polyolefin, and foaming the far-infrared material, the far-infrared radiation effect is further improved because this bran also has a far-infrared radiation effect. can get.

[0024]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described more specifically with reference to experimental examples.

(1) Preparation of deodorant sheet (Sheet No. 1) 300 g of a resin composition composed of 70% by weight of bran and 30% by weight of polypropylene was added with "charcoal"
Ceramic charcoal powder (manufactured by Hibino Dye Factory) and tourmaline powder were added and mixed uniformly, and the mixture was added to about 40
Foamed sheet (10 mm thick)
(0 cm × 200 cm) as a central layer. A far-infrared foam sheet (using the product name “Okapak S” sold by Ecolopack Co., Ltd.) is arranged on one side (the lower side during use) of the deodorant foam sheet, and the other side is used. On the surface is a cushion layer (100 cm) made of 400 g of polyester cotton (those not impregnated with a tree extract).
× 200 cm) were laminated, and the whole was wrapped with a cotton cloth as a side cloth and stitched to prepare a deodorant sheet.

(Sheet No. 2) Neither ceramic charcoal powder nor tourmaline powder was added to the resin composition at the time of forming the center layer, no far-red foam sheet was used, and Japanese silk dyeing stock was used as the side fabric. A deodorant sheet was prepared in the same manner as in Experimental Example 1, except that a cotton cloth composed of 100% of the product name “Sanderon Fine W-TYPE” manufactured by the company was used.

(Sheet No. 3) At the time of forming the center layer, neither the ceramic charcoal powder nor the tourmaline powder was added to the resin composition, the far-red foam sheet was not used, and the cushion layer was made of Teijin Limited. A deodorant sheet was prepared in the same manner as in Experimental Example 1 except that 400 g of a product name “Fresh Coal” manufactured by Toshiba was used.

(Sheet Nos. 4 to 7) The same as in Experimental Example 1 except that the materials added to the resin composition, the side material, and the material of the cushion layer at the time of forming the center layer were as shown in Table 1. To prepare a deodorant sheet.

[0029]

[Table 1]

(2) Performance Evaluation (Experiment No. 1) On one floor of facility a, all the bed pads used for the resident's bed were No. 1
Was replaced with a deodorant sheet, and once a day, the odor intensity of the entire floor was sensory evaluated. The test period was 14 days from April 15, 1998 to April 28, 1998.

(Experiment Nos. 2 to 7) In each of the facilities shown in Table 2, the odor intensity was similarly evaluated using the deodorant sheets of Nos. 2 to 7. The test period of Experiment Nos. 2 to 5 was 14 days from April 15, 1998 to April 28, 1998, and that of Experiment No. 6 was performed.
The test period was 14 days from February 23 to March 8, 1998, and the test period for Experiment No. 7 was April 13 to 4, 1998.
It was 14 days on March 26.

(Experiment No. 8) On one floor of the facility a, all the bed pads used for the resident's bed were replaced with No. 1 deodorant sheets, and the occupants' feeling of use was reduced. Interviews were conducted daily. The test period was
14 days from April 15 to April 28.

Table 2 shows the above results. In Table 2, "odor intensity before test" is a relative odor intensity of a facility evaluated organoleptically, and a larger value indicates a stronger odor. That is, assuming that the odor intensity of the facility a is 10, the odor intensity of the facility b and the facility c is about 60% and 70% of the facility a, respectively. Experiment Nos. 1 to 7
The evaluation criteria in the (deodorization survey) are as follows. Here, “effect” means that an unpleasant odor is reduced. A: Excellent effect (very effective) B: Effective (effective) C: Somewhat effective (somewhat effective) D: Invalid (no effect)

The evaluation criteria in Experiment No. 8 (bedsore investigation) are as follows. Here, the “effect” means that the occupant feels sensational in the body and alleviates muscle pain, lower back pain, pressure ulcer, etc. of the body. A: Excellent effect (very effective) B: Effective (effective) C: Somewhat effective (somewhat effective) D: Invalid (no effect)

[0035]

[Table 2]

As can be seen from Table 2, when the deodorant sheet No. 1 having the central layer containing charcoal and tourmaline was used (Experiment No. 1), even in the facility a where the odor was most intense. The odor was quickly reduced, and the effect was hardly attenuated for 14 days. In addition, the deodorant sheet No. 5, which has a central layer containing charcoal and tourmaline, uses "Fresh coal" as the cushion layer, and uses "Sanderon" as the side fabric, has particularly high deodorant performance. c) (Experiment No. 7), and even in the facility a where the odor is most intense (Experiment No. 5), the odor can be almost immediately removed, and the effect is 1%.
It lasted for four days.

On the other hand, when the deodorant sheet No. 6 having a central layer containing charcoal but not tourmaline was used (Experiment No.
In 6), the deodorizing effect decreased after 10 days from the start of the test, and the persistence of the deodorizing effect was insufficient. When "Sanderon" or "Fresh Coal" was used but a central layer containing neither charcoal nor tourmaline was used (Experiment No.
Since the deodorizing effect was insufficient in (2) and (3), it was found that the deodorizing effect was significantly improved by using charcoal and tourmaline in combination with these materials.

As can be seen from Experiment Nos. 4 and 8, the far-red foam sheet (far-red material) is not effective in deodorizing, but the body is shiny, muscular pain and lower back pain. Demonstrated far-infrared effects such as relief of pressure ulcers.

[0039]

According to the deodorizing sheet of the present invention, an excellent deodorizing effect can be obtained over a long period of time by incorporating carbon and tourmaline in the central layer. The effect can be further enhanced by selecting appropriate materials for the side cloth and the cushion layer.

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Claims (6)

[Claims] 1. A deodorizing sheet comprising a central layer containing charcoal and tourmaline. 2. The deodorant sheet according to claim 1, comprising: the center layer; and a side cloth surrounding the center layer, wherein the side cloth is made of an organic fiber having a metal-containing carboxyl group. 3. The side cloth wraps the center layer and at least one cushion layer laminated on the center layer, wherein the cushion layer is made of a cotton-like material impregnated with a tree extraction component. 2. The deodorant sheet according to 2. 4. The method according to claim 1, wherein the content of charcoal and tourmaline in the central layer is 0.001 to 20% by weight of charcoal and 0.001 to 10% by weight of tourmaline. Deodorant sheet. 5. The deodorant sheet according to claim 2, wherein the side cloth further wraps a far-infrared material. 6. A deodorizing sheet used as a bed pad, obtained by foaming a resin composition to which ceramic charcoal powder and tourmaline powder are added, and after the foaming, the content of the ceramic charcoal powder is reduced to 0. 0.001 to 20% by weight,
0.001 to 10% by weight of the tourmaline powder
A central layer made of a deodorizing foam sheet, and a cotton-like material made of synthetic fiber impregnated with a tree-extracting component, and two cushion layers laminated on both sides of the central layer. A deodorizing sheet, comprising: an organic fiber having a base; and a side cloth wrapping the center layer and the cushion layer.