JP2000060950A - Deodorant sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance the deodorization efficiency and widen the field of application of a deodorant sheet comprising a sheetlike base material where pulverized carbide is stuck via an emulsive binder, by permitting malodorous substances in the air to enter fine holes of the pulverized carbide by natural air circulation. SOLUTION: This deodorant sheet comprises a sheetlike base material where pulverized carbide is stuck via an emulsive binder. The sheetlike base material is a mesh sheet of a multifilament synthetic fiber yarn 1. The pulverized-carbide- mixed binder 3 has a dry deposition amount from 5 to 100 g/m2, and a mixing ratio from 1:2 to 1:6 between the binder and pulverized carbide.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improved deodorant sheet that adsorbs a malodorous substance to create a clean air environment in a room or a closed space.

[0002]

2. Description of the Related Art Activated carbon, Bincho charcoal, bamboo charcoal, etc. (hereinafter simply referred to as charcoal) are fine holes (average pore diameter: 5 to 20Å)
Focusing on the malodorous substance adsorbing function of, it has been conventionally used in the shape of a ball or a rod in the vicinity of the place or the object where the malodorous substance is generated in order to adsorb the malodorous substance in the room or the enclosed space. . By the way, it is important that the malodorous substance comes into contact with a large number of fine holes in order to sufficiently exert the function of the malodorous substance of the above-mentioned carbide. However, in the spherical or rod-shaped carbide, the malodorous substance was only in contact with the fine holes existing on the surface of the carbide. Therefore, in order to contact the fine holes existing inside the carbide, it is necessary to apply pressure to the air containing the malodorous substance.

Conventionally, as a deodorant sheet using a carbide, a carbide fine powder (which is obtained by crushing the carbide into a fine powder to increase the specific surface area of fine holes) is adhered to a base sheet of a non-woven fabric or a woven fabric. It is a mixture of a mixture with an agent adhered by a coating process.

However, since the base sheet of this prior art deodorant sheet is a non-woven fabric or a woven fabric, it has a structure in which fine carbide powder is filled in the voids of the base sheet, resulting in a large air passage resistance. . Therefore, when using the conventional deodorant sheet, it is difficult to bring a malodorous substance into contact with the fine holes of the carbide fine powder filled inside the base sheet in natural air circulation, and the deodorant efficiency is low. It was a thing. Further, in order to overcome this, as in the case of the spherical or rod-shaped carbide, a means for forcibly passing air containing a malodorous substance is required, so that the air purifying equipment and deodorizing equipment have limited applications. It was only used in.

[0005]

DISCLOSURE OF THE INVENTION The present invention is a deodorant sheet in which a fine carbide powder is adhered to a base sheet with an emulsion binder, and a malodorous substance in the air is naturally dispersed in fine holes of the fine carbide powder. It is an object of the present invention to make it accessible in the air circulation, improve deodorizing efficiency, and be applicable to various applications.

[0006]

As a result of various studies to solve the above-mentioned problems, the present inventor constructed a mesh sheet using a multifilament synthetic fiber yarn as a base material sheet, This is solved by forming a deodorant sheet by coating a binder containing a specific amount of fine carbide powder.

That is, in the deodorant sheet of the present invention, the above-mentioned base sheet is a mesh sheet made of multifilament synthetic fiber yarn, and the dry adhesion amount of the carbide fine powder mixed binder is 5 to 100 g / m ² , and The mixture ratio of the binder and the carbide fine powder in the carbide fine powder mixed binder is 1: 2 to 1: 6.

According to this means, since the multifilament synthetic fiber yarn which is a mesh sheet and has a concavo-convex shape in cross section and has a twisting space, air naturally passes therethrough, and the conventional Compared to monofilament synthetic fiber threads used for non-woven fabrics and woven fabrics,
The specific surface area to which the fine carbide powder can be attached becomes large, and the malodorous substance in the air is efficiently adsorbed in a short time.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described with reference to the drawings.

The deodorant sheet S of the present invention is a mesh sheet having a mesh of a predetermined size, as shown in FIG.
It is composed of a multifilament synthetic fiber yarn 1 with a binder containing a mixture of fine powder of carbide. As shown in FIG. 2, the synthetic fiber yarn 1 is a twisted yarn composed of a plurality of filaments 1a, and innumerable carbide fine powders 2 are attached to the surface of the filament 1a and the twist space 1b with a binder 3. .

In this case, the deodorant sheet S is
The peripheral portion may be appropriately edged depending on the application.

The multifilament synthetic fiber yarn used in the present invention includes all commonly used ones such as nylon and polyester.

The size of the mesh of the mesh sheet may be variously changed according to the use, but if it is less than 30 mesh, the number of multifilament synthetic fiber yarns constituting the mesh will be small, and Along with this, the amount of fine carbon powder adhered decreases, and the deodorizing function decreases, which is not preferable. If it exceeds 70 mesh, the amount of fine carbon powder adhered increases, which is good in terms of deodorizing function, but air passage resistance Is not preferable because it becomes large, so that the range is 30 to 70 mesh, and more preferably 40 to 50 mesh.

The finely powdered carbide used in the present invention is one obtained by pulverizing a carbide appropriately selected from activated carbon, bincho charcoal, bamboo charcoal, etc. so as to have a predetermined average particle diameter, and more preferably bamboo charcoal having an average particle diameter of 5 If the average particle size is less than 5 μm, the twist space is covered with the fine binder mixture of carbide fine powder, and the malodorous substance does not pass through the twist space. If it exceeds 20 μm, the fine carbide powder is obtained. Has a small surface area, and the bad odor substance adsorption performance is lowered, which is disadvantageous.

This fine carbide powder was applied to the above mesh sheet as a binder for fine carbide powder mixed in a dry adhesion amount of 5
~ 100 g / m ^{2 is} deposited. This range is 5g / m
^If it is less than ² , the deodorizing effect cannot be expected so much and 100
If it exceeds g / m ² , the degree of the malodorous substance passing through the twisted space is reduced and the deodorizing effect is reduced, which is not preferable.

If the mixing ratio of the binder and the carbide fine powder in the carbide fine powder mixed binder is less than 2 with respect to the binder 1, the binder penetrates into and around the carbide fine powder to form the carbide fine powder. Binder 1 is not preferable because it loses deodorant and humidity control functions.
On the other hand, if it exceeds 6, it becomes difficult for the binder to hold the carbide fine powder, and the carbide fine powder may fall off during transportation and use, which is not preferable, and the mixing ratio of the binder and the carbide fine powder is not preferable. As: 1: 2-1:
6, more preferably in the range of 1: 3 to 1: 5.

By the way, according to the present invention, a specific amount of fine carbide powder is adhered to a mesh sheet made of multifilament synthetic fiber yarn. A binder is usually used to adhere the fine carbide powder of the mesh sheet. This is what you do. Such a binder may be either a synthetic resin type or a rubber type, and an emulsion type in which polymer particles are dispersed in water is preferable.

Further, in order to improve the retention of the fine carbide powder, when the amount of the binder is increased, a synthetic resin system which can form a porous surface on the binder surface after drying is preferable.

Furthermore, the present invention can be obtained by coating a fine binder powder mixture of carbide on a mesh sheet. The coating method may be dipping, coating, spraying or the like, and after coating, The deodorant sheet of the present invention can be obtained by dry heat treatment.

[0020]

Example A multifilament polyester yarn was used to process a mesh sheet having a weight of 30 g / m ² , and 100 parts of bamboo charcoal fine powder, 100 parts of SBR latex and water were added to the mesh sheet at a concentration of 20 in a solid weight ratio. % After being impregnated into the mixed synthetic resin liquid adjusted to
A desired deodorant sheet was produced by performing a drying treatment so that the amount of fine powder of bamboo charcoal was 50 g / m ² (50 g / m ² ).

In this case, the denier of the multifilament polyester yarn and the number of sheets constituting the sheet are not particularly limited, but 2 denier × 200 filaments.

The mesh size of the mesh sheet is 130 mesh, but the size and shape of the mesh may be any size as long as air can pass through naturally, and the size is not limited to this. .

Next, an odorous substance adsorption test was carried out using the deodorant sheet of the present invention (hereinafter referred to as the product of the present invention) and the conventional non-woven fabric sheet (hereinafter referred to as the conventional product) adhered with activated carbon. The results shown in Table 1 were obtained. In the test method, a 10 cm × 10 cm sample piece and 50 ppm formalin odorous gas were enclosed in 3 liters of Tetra Pak, and the change with time of the odorous concentration was measured.

[0024]

[Table 1]

As is clear from the results shown in Table 1, it was found that the product of the present invention can significantly reduce odor in a shorter time than the conventional product.

[0026]

According to the deodorant sheet of the present invention, since the mesh sheet is composed of the multi-filament synthetic fiber yarn, air naturally passes through, and the monofilament used in the conventional non-woven fabrics and woven fabrics. Compared with synthetic fiber yarn, the specific surface area to which the carbide fine powder can be attached is large,
It is possible to efficiently adsorb malodorous substances in the air in a short time.

Further, the deodorant sheet is cut into an appropriate size and shape so that it can be used as a drawer or shelf rug for a water store, refrigerator, storage cabinet, etc. for storing and storing food, tableware, etc. It can be used as a rug for pets and pets (in this case, it may be provided with a suitable breathable cover), it can be rolled into a roll curtain, or it can be appropriately folded to be used as a filter for air cleaning and deodorizing equipment, etc. It can be used for various purposes.

[Brief description of drawings]

FIG. 1 is a front view showing a deodorant sheet of the present invention.

FIG. 2 is an enlarged explanatory view showing a main part of the deodorant sheet of the present invention.

[Explanation of symbols]

S ... Deodorant sheet 1 ... Adhesion binder of carbide fine powder mixed multifilament synthetic fiber yarn 1a .. Filament 1b ... Twisting space 2 ... Fine powder of carbide 3 ... Binder

Claims (2)

[Claims] 1. A deodorant sheet obtained by adhering a carbide fine powder to a base sheet with an emulsion binder, wherein the base sheet is a mesh sheet made of multifilament synthetic fiber yarn, and the carbide fine powder is mixed. A deodorant sheet, characterized in that the dry adhesion amount of the binder is 5 to 100 g / m ² . 2. The mixture ratio of the binder and the carbide fine powder in the carbide fine powder mixed binder is 1: 2 to 1 :.
The deodorant sheet according to claim 1, which is 6.