JP2007136033A - Insole for shoe - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an insole for a shoe, which has a deodorizing sheet carrying an adsorptive deodorant and a photocatalyst, and has improved capability of removing offensive odor inside the shoe and its durability. <P>SOLUTION: In the insole, a middle layer carrying the adsorptive deodorant in an air-permeable sheet is laminated with a cover layer and a cushion layer to form a three-layer sheet. The photocatalyst is supported in the air permeable sheet of the middle layer. Thereby the constitution provides the insole having the capability of sufficiently removing harmful substances such as the offensive odor even in highly humid surroundings like the inside of the shoe and excellent durability by the photocatalyst. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

The present invention laminates a non-woven fabric or a surface layer made of woven fabric, knitted fabric, leather, etc., and a cushion layer made of foam or the like, and laminates an intermediate layer carrying an adsorbent deodorant on a breathable sheet. The present invention relates to an insole sheet for shoes having a high deodorizing performance in which a layer material is further subjected to a photocatalyst-containing treatment.

Conventional insoles for shoes are single-layer or multi-layer products mainly made of a woven fabric, a knitted fabric, or synthetic leather made of a synthetic polymer resin or resin fiber.
A conventional insole made of a multi-layered body is a laminated product that is usually made by laminating a two-layered product composed of a surface layer and a cushion layer and an intermediate sheet therebetween, The peripheral edge is integrated by welding.
In general, a two-layer or laminated type insole is usually laminated by heating operation using electricity to a laminate in which a surface layer, an adhesive and a cushion layer are laminated using a manufacturing apparatus using high-frequency heating. It is mainly made by the method of fusing an object into a shoe insole shape and bonding its peripheral edge. (For example, refer to Patent Document 1.)
Therefore, the sheet of each layer often takes the form of close contact, and the laminated body often takes a form close to a hermetic seal with little air movement or intrusion from the outside.
By the way, the insole of shoes adds deodorant effect to suppress the spread of shoe odor during use, so deodorant of antibacterial agent and odor adsorbent deodorant that adsorbs odor components in the insole of shoes. It is necessary to apply the material to the sheet of the surface layer, intermediate layer, or cushion layer.
Therefore, the two-layer product is made of a resin foam containing activated carbon and zeolite, which are adsorption-type deodorizers, in the cushion layer, and bears the deodorizing performance of the shoe insole according to this specification. (For example, see Patent Document 2.)
Laminate products are made by using as the intermediate layer a woven fabric or knitted fabric containing a cotton woven fabric containing an adsorptive deodorant such as activated carbon or an antibacterial material with deodorizing performance in the intermediate layer. , Each removes the odor of the shoes, which is responsible for the deodorant performance of the insole. (For example, refer to Patent Document 3.)

However, in the case of the two-layer product, the deodorant is included in the voids in the foam of the cushion layer, and the odor of the shoes reaches the deodorant by diffusing in the foam voids to remove the odor. However, since the size of the voids in the foam is too small, the amount of addition decreases as the deodorant is moved into the foam, and the deodorant adsorption site is buried in the foam resin. Therefore, even if the initial deodorizing performance is exhibited to some extent by the deodorizing agent close to the outside of the foam, the deodorizing agent further moves toward the inside of the foam. The odor diffusion to the water becomes slow, and the adsorption performance also decreases. For this reason, the deodorizing performance rapidly decreases with time, and the initial deodorizing performance is not maintained.
In addition, in the case of laminated products, deodorizers such as activated carbon are included in the fabric of the intermediate layer and are not particularly fixed, so the activated carbon falls off the insole during use and blackens the user's socks. The problem that occurred. In addition, since the intermediate layer is sandwiched between the surface layer and the cushion layer, the inflow of odor generated from the insole around the insole to the deodorant is hindered, and is expected only as a deodorant for shoes. There was a problem that deodorization performance could not be obtained.
Utility Model Registration No. 3054968 JP-A-9-234364 JP 2004-41385 A

Accordingly, an object of the present invention is to provide a sheet obtained by laminating an intermediate layer in which a breathable sheet carries an adsorptive deodorant, with a surface layer made of woven fabric, nonwoven fabric, or leather and a cushion layer made of foam or the like. Used as an insole sheet for shoes, it provides not only the initial deodorization performance expected to be used as a deodorant for shoes, but also provides a new shoe insole with high sustainability that maintains the initial deodorization performance. There is to do.

The present invention laminates an intermediate layer in which activated carbon, which is an adsorptive deodorant, and zeolite, are supported on a breathable sheet, with a surface layer made of woven fabric, unwoven cloth or synthetic leather, and a cushion layer made of foam or the like. The above-mentioned sheet is an insole sheet for shoes characterized in that the air-permeable sheet of the intermediate layer contains a photocatalyst.

The present invention is characterized in that powdered activated carbon and / or activated carbon fiber is used as an adsorption deodorant.

The present invention is characterized by punching the cushion layer.

The present invention is characterized in that the opening ratio of the cushion layer is 20% or more.

According to the present invention, the ability to remove harmful substances such as bad odor is high even in a high humidity environment such as the inside of a shoe, and there is an effect of obtaining an insole of a shoe with high sustainability by a photocatalyst.

Hereinafter, embodiments of the present invention will be described in detail. In the present invention, activated carbon and zeolite having an adsorption mechanism by physical adsorption for the purpose of adsorbing and removing odors generated in shoes or socks of users wearing shoes in a breathable sheet of an intermediate layer of a shoe insole. Use deodorant. Further, in the breathable sheet, a photocatalyst is used for the purpose of decomposing the odor component adsorbed on the deodorant and recovering the adsorption performance by opening the adsorption site of the deodorant buried with the odor component. Further, the breathable sheet takes a three-dimensional network structure having a structure with many voids so that odorous components can enter from the outside of the insole, diffuse and be easily absorbed by the deodorant, and the skeleton of the structure It takes a form in which the deodorizing agent or photocatalyst is bound to the molecule with a binder or the like.

Furthermore, a surface layer made of woven or non-woven fabric for the purpose of ensuring breathability to prevent foot stuffiness and improving the feel of contact with the soles, and leather for the purpose of giving a high-class appearance, In order to absorb shocks to the feet and reduce fatigue when walking, a three-layer sheet is used in which an intermediate layer is laminated with a cushion layer made of a foam that exhibits cushioning properties by having rubber elasticity.
Furthermore, for the purpose of facilitating the arrival of the adsorption deodorant in the breathable sheet of the intermediate layer by diffusion of the shoe odor component from the outside of the insole, each of the cushion layers is punched at regular intervals, It takes the form which opened the hole. In addition, when performing the operation to recover the adsorption performance of the deodorant by the photodegradation performance of the photocatalyst, the insole of the shoe is recovered by sun-drying or shade-drying. Thus, the intensity of the ultraviolet light hitting the photocatalyst in the intermediate layer is improved, and the degree of recovery of the adsorption performance by photolysis can be improved.

The air permeable sheet used for the intermediate layer may be air permeable on both sides, or may be air permeable only on one side. In order to effectively exert the photocatalytic action, it is preferable that one or both sides of the sheet have light transmittance. However, even in a normal air-permeable sheet, ultraviolet light transmittance is confirmed to some extent, so an insole for shoes is used. Can be used as Examples of such a breathable sheet include general-purpose flexible plastic films such as polyethylene films, polypropylene films, and polyester films, and sheets such as thin plates. Moreover, in order to give air permeability, you may make a fine hole in these sheets. Furthermore, if a non-woven fabric, woven fabric, knitted fabric, paper, or the like is used as the breathable sheet, it is possible to ensure a certain light transmittance as well as breathability.

As the fiber used for the nonwoven fabric, polyolefin, polyvinyl chloride, polyacrylonitrile, polyamide, or the like can be used. Moreover, these fibers can also be mixed and used as needed. The cross-sectional shape of the fiber is not particularly limited, and may be not only a circular shape but also an elliptical shape, a triangular shape, a star shape, a T shape, a Y shape, a leaf shape, or the like. Further, those having a void on the surface or having a branched structure can be used.

When the purpose is to obtain an appropriate mechanical strength in the nonwoven fabric and to provide a void into which an adsorption deodorant can be inserted, it is preferable to perform a three-dimensional entanglement treatment. The three-dimensional entanglement treatment is a method in which a nonwoven fabric is laminated in a single layer or a plurality of layers, placed on a support, mechanically treated on the nonwoven fabric, and fibers are entangled three-dimensionally. Specifically, the needle punch method and the hydroentanglement method can be mentioned, but the hydroentanglement method is preferable in the present invention because the entangling is performed uniformly and the production speed is high. The water entanglement method is a method in which a water flow is jetted from above the nonwoven fabric, and the fibers constituting the nonwoven fabric are three-dimensionally entangled to develop strength.

There are various methods for encapsulating or enclosing a photocatalyst and an adsorption-type deodorant in the breathable sheet, but it is necessary to devise so that light can be efficiently applied to the photocatalyst and can be sufficiently brought into contact with harmful substances such as malodors. .

Regarding the method of encapsulating or enclosing the photocatalyst and the adsorption-type deodorant in the breathable sheet, the light-permeable thermoplastic resin, the photocatalyst and the adsorption-type deodorant are blended and mixed by a melt-kneading method, and the gas permeability is obtained. A method of forming a laminated sheet by extrusion laminating by extruding the blend / mixture onto a sheet base material is preferable. In addition, the substrate may be peeled off from the laminated sheet to form a single layer sheet. Moreover, you may carry out by well-known shaping | molding methods, such as an inflation process and injection process.

The photocatalyst used in the present invention is a fine particle having a particle size of titanium oxide of about 4 to 8 nm and a surface area per unit weight increased to increase the reactivity, and is strong in the presence of ultraviolet rays, oxygen and water. Deodorant, antibacterial and bactericidal action. As a commercial item, there exists "ST series" (made by Ishihara Sangyo Co., Ltd.) etc., for example. In addition, a metal oxide such as gold, platinum, palladium, copper, and nickel oxide and a metal oxide may be supported on the titanium oxide photocatalyst to promote the photocatalytic function.

The adsorption-type deodorizer used in the present invention refers to an agent that adsorbs odorous substances and exhibits a deodorizing effect. Examples of such adsorptive deodorizers include activated carbon, zeolite (hydrophilic and hydrophobic), activated clay, acidic clay, hydrotalcite, sepiolite, silica-alumina, silica-magnesia, silica-ZnO and the like. These may be used alone or in combination of two or more.

The activated carbon used in the present invention is preferably powdered activated carbon and / or activated carbon fiber. In the case of powdered activated carbon, a particle size of 10 μm or less is preferable, and in the case of powdered activated carbon having a particle size of 10 μm or more, the shape of the void inside the particle becomes more complicated. In addition to slowing down the adsorption rate, the activated carbon may not be evenly dispersed depending on the size of the voids in the breathable sheet when the activated carbon is supported on the breathable sheet. It is. Moreover, there is no particular lower limit of the particle diameter, but if it is too small, there is a concern of bleed-out of activated carbon. In addition, in the case of activated carbon fiber, the surface of the activated carbon fiber has micropores with adsorption sites, so that not only has a high adsorption speed, but it can be fixed by heat fusion via the breathable sheet and binder fiber. Because it can, there is a feature that there is little worry of dropping off.

The powdered activated carbon used in the present invention is preferably 20 g / m ² or more as the content in the sheet. This is because, when a sheet having a lower content is used, the recovery performance of the adsorption performance due to ultraviolet irradiation to the photocatalyst is reduced regardless of the addition amount of the photocatalyst.

The adsorptive deodorizer is fast-acting and quickly adsorbs and deodorizes high-concentration odor substances, but has no sustainability due to its limited adsorption capacity.

If a photocatalyst and an adsorptive deodorant are used in combination as described above, the titanium oxide photocatalyst has the ability to dissolve odorous (bad odor) substances over a long period of time by sunlight or light from a fluorescent lamp. The odor (bad odor) substance adsorbed by the adsorbent deodorant in the above is also decomposed, and as a result, the deodorizing ability of the adsorbent deodorant is restored, and it has both rapid action and sustainability for a long period of time. Become.

Examples of the light-transmitting thermoplastic resin used in the present invention include low density polyethylene, high density polyethylene, linear low density polyethylene, ethylene-methacrylic acid copolymer, ethylene-vinyl acetate copolymer, polypropylene, and Examples thereof include olefin resins such as copolymers, styrene resins, polycarbonate resins, (meth) acrylic acid resins, vinyl acetate resins, urethane resins, and silicone resins. These may be used alone or in combination of two or more.

Since these resins can permeate odorous substances that require deodorization and deodorization, and can transmit oxygen and light necessary for the expression of the catalytic function of the photocatalyst compounded, the photocatalyst and adsorption system used in the present invention The deodorizer acts on the inside of the resin sheet, which is more efficient than the coating method effective only on the surface. In addition, the compounding / molding method has better processing efficiency than the coating method.

As the surface layer used in the present invention, woven fabric, knitted fabric or synthetic leather is often used. Any kind of fabric can be applied as long as it is suitable for the fabric of the insole, such as natural fibers such as wool, cotton and hemp, synthetic fibers such as polyester, polypropylene and polyamide, rayon and acetate. A woven fabric or a knitted fabric made of regenerated / semi-synthetic fibers or the like, or a blended material thereof can be applied.
As synthetic leather, protein leather (especially for shoes) and the like can be used in addition to conventional general-purpose synthetic leather. Further, the weaving method of the woven fabric used for these fabrics and the knitting method of the knitted fabric are not particularly limited. For example, a plain fabric, a honeycomb weave fabric, double raschel knitting, tricot knitting, mesh knitting, etc. A knitted fabric such as can be used.

As the cushion layer used in the present invention, polyethylene, polyvinyl chloride, polyurethane, polystyrene, acrylic silicon, natural rubber, acrylonitrile, butadiene rubber, styrene butadiene rubber and the like, which are resin materials used for the resin foam, are preferable. It is also preferable to use non-woven fabric, woven fabric, etc., such as spun bond, melt blow, air lay, and card method. A weight per unit area of 50 to 500 g / m ² is generally used, but 100 to 400 g / m ² is preferable in terms of comfort and strength.

The woven fabric of the present invention is a fabric in which natural fibers such as hemp and cotton, animal fibers such as wool, synthetic fibers such as nylon, vinylon, polyester and acrylic, and regenerated fibers such as rayon are woven together, and the basis weight is 50. ˜600 g / m ² is common, and 100 to 500 g / m ² is preferable for comfort. As for the relationship between the amount of fibers in the woven fabric and the moisture permeability, if the fibers are hydrophobic, the moisture moves between the fibers, so the apparent density is generally preferably 0.6 or less. Even if it becomes dense, it is good. The apparent density here refers to the proportion of fibers in the total volume of the woven fabric, but the influence of the thickness of the woven fabric is also large, and the thickness is preferably 1000 μm or more and 1500 μm or less.

As the nonwoven fabric in the present invention, a single fiber or a mixture of fibers selected from plant fibers, animal fibers, regenerated fibers, semi-synthetic fibers, and synthetic fibers is used.

Examples of plant fibers include cotton and hemp (flax, ramie), and examples of animal fibers include fibers such as silk and wool.

As regenerated fibers, rayon and cupra are used. As semi-synthetic fibers, acetate, triacetate and promix are used. As synthetic fibers, nylon, acrylic, vinylon, vinylidene, polyvinyl chloride, polyester, polyethylene, polypropylene, benzoate, Examples include fibers such as polyclar and phenol.

In the present invention, in addition to the above fibers, wood fibers such as softwood pulp and hardwood pulp, woody materials such as straw pulp, and herbs are included as plant fibers. Furthermore, pulp fibers obtained from waste paper, waste paper and the like are also included.

When the various fibers in the present invention are used alone or in combination, they are mixed and used, and various binder fibers can be used as necessary.

Examples of the binder fiber used in the present invention include composite fibers such as a core-sheath type (core-shell type) and a parallel type (side-by-side type). For example, a combination of polypropylene (core) and polyethylene (sheath) (Daiwabo, Daiwabo, NBF-H), a combination of polypropylene (core) and ethylene vinyl alcohol (sheath) (Daiwabo, Daiwabo, NBF-E) ), A combination of polypropylene (core) and polyethylene (sheath) (Chisso Corporation, Chisso ESC), a combination of high-melting polyester (core) and low-melting polyester (sheath) (Unitika, Melty 4080), and the like. Further, a hot water melting type such as vinylon binder fiber (manufactured by Kuraray Co., Ltd., VPB107 × 1) can also be used.

The non-woven fabric, after dispersing various short fibers in water, is made into a paper by the same paper machine as paper, dried and made into a sheet, and its production is a round net paper machine, a long net paper machine, an inclined wire type paper machine, etc. According to this, paper is made in a single layer or multiple layers.

The shoe insole of the present invention can be manufactured by a method in which a shoe insole is melted as it is by applying a high-frequency current at a level that is applied in a shoe insole manufacturing apparatus, and a peripheral portion thereof is bonded.
A typical manufacturing process of the shoe insole of the present invention is shown below.
1) A hot-melt nonwoven fabric is stacked on the cushion layer, an intermediate layer sheet selected from activated carbon and other sheets, and a second hot-melt nonwoven fabric are stacked. Form.
2) Using a shoe insole manufacturing device (high-frequency welder device), the laminate is placed on a flat plate-like lower electrode.
3) Subsequently, the upper electrode with the outer peripheral edge pointed with a shoe insole-shaped mold is pressed onto the upper electrode, and a high frequency current is applied between the upper electrode and the lower electrode while applying pressure. By heating the laminated body between the electrodes, the laminated body is melted into a shoe insole shape, and at the same time, the peripheral edge portion is bonded.
The heating temperature by the high-frequency welder is about 180 to 230 ° C, preferably 200 to 220 ° C.

As described above, in addition to a method in which a laminate comprising only a surface layer, a cushion layer, and an intermediate layer sheet is directly melted by a high frequency current and the peripheral portion thereof is adhered at the same time, between the material layers, In addition, a shoe insole can be created by energizing a high-frequency current by interposing a hot melt powder. This method is particularly effective when a material having poor adhesion due to energization of a high-frequency current, such as polypropylene or polyester, is used as part of the material of the surface layer, cushion layer, and intermediate layer sheet.
The hot melt nonwoven fabric to be used is preferably a hot melt nonwoven fabric having a polyamide-based component as a main component, and a polyamide hot melt nonwoven fabric, a polyamide / polyolefin hot melt nonwoven fabric, and a polylactic acid nonwoven fabric are suitable. For example, a polyamide / polyolefin hot-melt non-woven fabric product of spider web-like spun bond, trade name Dynac B-1030 (commercially available from Toyobo Co., Ltd.) can be typically applied. In addition, this hot melt non-woven fabric product has good breathability, high flexibility, and high frequency welder (heating temperature 150 ° C. to 180 ° C., preferably 165 ° C. 175 ° C) has the advantage that the adhesion performance is very good.
As the hot melt powder, the same component as that of the non-woven fabric, for example, a polyamide component powder or the like can be used.

The shoe insole according to the present invention is characterized in that each of the cushion layers is punched at regular intervals. Punching here refers to the operation of hollowing out a circular or elliptical opening in the cushion layer or intermediate layer, usually with a circular opening of 1 to 3 mm spaced from the center of the opening by 3 to 10 mm. It is applied in both vertical and horizontal directions. And when such punching is not performed, when an odor generated from around the insole such as socks flows into the adsorption-type deodorant in the intermediate layer, the inlet / outlet to the intermediate layer is a surface layer It was only from the opening part of the cloth of unemployed or unemployed. On the other hand, punching in this way allows inflow of odors directly from the opening of the punching to the intermediate layer, shortening the time for the odor to reach the deodorizer, greatly reducing the deodorization speed and deodorizing performance. There is an effect to improve.

In the insole of the present invention, on the cushion layer sheet, when the total area of each layer of the opening obtained by punching at regular intervals is 100%, the ratio of the size of the opening, that is, The aperture ratio is preferably 20% or more.
The problem when the aperture ratio is less than 20% is that the irradiation rate of ultraviolet irradiation to the photocatalyst in the intermediate layer is reduced, and the ability to recover the adsorption performance by decomposition of the adsorbed odor component of the photocatalyst is lowered.
Further, the upper limit is not particularly limited as long as the durability of the shoe lasts, but it is generally considered that the upper limit is less than 50%.

EXAMPLES The present invention will be specifically described below with reference to examples, but the present invention is not limited to the examples.

[Example 1]
A polyester fiber non-woven fabric is prepared as a sheet for the surface layer, and the polyester fiber non-woven fabric is impregnated with 10 parts by weight of titanium oxide, 25 parts by weight of powdered activated carbon and 25 parts by weight of zeolite as an adsorptive deodorant, An intermediate layer sheet was obtained, and a urethane foam cushion layer sheet was prepared. In this sheet, circular holes with a diameter of 5 mm were punched at equal intervals in the vertical and horizontal directions (1 cm intervals from the center of the hole). Then, a polyethylene adhesive is spread on the untreated surface of the cushion layer sheet, the intermediate layer sheet is stacked immediately after heating at 130 ° C., and the polyethylene adhesive is further applied on the intermediate layer sheet surface. Sprinkling and immediately after heating at 130 ° C., the surface layer sheet is stacked and pressed through a metal roll having a gap of about 50% of the total amount of the cushion layer sheet, the intermediate layer sheet, and the surface layer sheet thickness. The insole sheet of Example 1 was obtained by laminating.

[Comparative Example 1]
Kobayashi Pharmaceutical Odo Eater (containing zeolite and activated carbon)

[Evaluation]
<Deodorization 1>
The shoe insole sheets obtained in Example 1 and Comparative Example 1 were cut into 2 cm squares, each one was placed in a rectangular case with a length of 2 cm, a width of 2 cm, and a height of 5 cm, and sealed, and further used for 8 hours. Socks were put in each case, and after 3 hours, 7 people smelled and compared the strength of the smell. The odor was evaluated in the following two stages.
○: Smell that can finally be detected ×: Smell that can be detected

<Deodorization 2>
The insole sheet obtained in Example 1 and Comparative Example 1 was cut into 2 cm × 5 cm, the cut end portion was covered with cellophane tape (Sekisui Chemical Co., Ltd., Sekisui Tape), and each sheet was 5 liters of PVF bag (As One Stock) Company-made, Tedlar bag, 1-6664-04) and sealed, injected with 80 ppm trimethylamine (relative humidity: 30%) gas, and after 1 hour photoacoustic multigas monitor (manufactured by Matsushita Intertechno, photoacoustic multi Concentration measurement was performed using a gas monitor.
The odor was evaluated in the following two steps.
○: Odor removal rate 50% or more, ×: Odor removal rate less than 50%

<Deodorization 3>
The insole sheet obtained in Example 1 and Comparative Example 1 was cut into 2 cm × 5 cm, the cut end portion was covered with cellophane tape (Sekisui Chemical Co., Ltd., Sekisui Tape), and each sheet was 5 liters of PVF bag (As One Stock) Company-made, Tedlar bag, 1-6664-04) and sealed, injected with 120 ppm methyl mercaptan (relative humidity: 30%) gas, 0.5 hours later, photoacoustic multi-gas monitor (Matsushita Intertechno, Concentration measurement was carried out using a photoacoustic multigas monitor.
The odor was evaluated in the following two steps.
○: Odor removal rate 50% or more, ×: Odor removal rate less than 50%

<Sustainability 1>
The insole sheet having an aperture ratio of 20% obtained in Example 1 was cut into 1 cm square, placed in a 0.7 L glass cell, sealed, and then methyl methylcaptan concentration in the glass cell was 120 ppm. Mercaptan is driven into the glass cell with a microsyringe. And after methyl mercaptan concentration falls, operation which drives methyl mercaptan with a syringe again is repeated. When the time change of the methyl mercaptan concentration becomes the same as the natural decay curve, it is considered that the adsorption is saturated, and the saturated adsorption operation is terminated. This operation is referred to as a first saturated adsorption operation A. Furthermore, one other same operation is performed and it is set as the 1st saturated adsorption operation B. Thereafter, in the first saturated adsorption operation A, the BLB lamp is irradiated with UV at an illuminance of 0.5 mW / cm ² for 3 hours from above the glass. The first saturated adsorption operation B does not perform UV irradiation. Thereafter, both the first saturated adsorption operation A and the first saturated adsorption operation B were performed as the second saturated adsorption operation A and the second saturated adsorption operation B, respectively.
Sustainability was evaluated in the following two stages.
○: When the methyl mercaptan adsorption amount of the second saturated adsorption operation A is larger than the second saturated adsorption operation B ×: When the methyl mercaptan adsorption amount of the second saturated adsorption operation A is the same as the second saturated adsorption operation B

Claims (4)

A laminate sheet comprising a surface layer, an intermediate layer carrying an adsorbent deodorant on a breathable sheet, and a cushion layer, wherein the insole for shoes includes a photocatalyst in the breathable sheet of the intermediate layer Sheet. The insole sheet for shoes according to claim 1, wherein powdered activated carbon and / or activated carbon fiber is used as the adsorption deodorant. The insole sheet for shoes according to claim 1, wherein the cushion layer is punched. The insole sheet for shoes according to claim 1, wherein an opening ratio of the cushion layer is 20% or more.