WO2010021517A2

WO2010021517A2 - Shoe insole

Info

Publication number: WO2010021517A2
Application number: PCT/KR2009/004677
Authority: WO
Inventors: 김용덕
Original assignee: 주식회사 비엠시스
Priority date: 2008-08-21
Filing date: 2009-08-21
Publication date: 2010-02-25
Also published as: WO2010021517A3; KR100919137B1

Abstract

Disclosed is a shoe insole which comprises a center portion and an outer portion and is made of polyurethane gel materials. The center portion is formed by mixing polyols, based on 100 parts by weight of the polyols, 0.05-2 parts by weight of nanosilver powder with a particle diameter of 50-100 nm, 0.5-15 parts by weight of toner, and 25-45 parts by weight of isocyanates, and curing the mixture in a gel form. The outer portion is formed by mixing polyols, based on 100 parts by weight of the polyols, 0.05-2 parts by weight of nanosilver powder with a particle diameter of 50-100 nm, and 20-45 parts by weight of isocyanates, and curing the mixture in a gel form. Polyurethane is applied to the shoe insole as an insole material and hardness is differentiated according to parts contacting a foot. Therefore, an impact-absorbing effect can be obtained without the increase of the insole’s thickness, and foot pain or fatigue can be reduced even in use for a long time. In addition, even if the shoe insole is used for a long time, the generation of bad odors and bacteria are prevented by mixing nanosilver powder with polyurethane and coating the surface of the insole with nanosilver.

Description

Shoe insole

The present invention relates to an insole of a shoe.

Insole is a part directly contacted by a person's foot, which directly affects comfort, shock absorption, posture correction, and fatigue when wearing shoes. 'It is also a very important part of the aspect.

Conventional insole is made of a material such as sponge or foam rubber and has the same hardness as the whole regardless of the part, so when you wear shoes for a long time, repeated impact is not absorbed and you feel pain in the place where the load is concentrated. Or fatigue. In addition, the conventional insole has a problem that the thickness is thin, so that the impact absorption effect is small, there is a limit to the inconvenience of inserting into the shoe when increasing the thickness of the insole for shock absorption.

On the other hand, there was a case in which the height of the insole was partially changed according to the part of the load applied to the foot to cause the shock absorbing effect, but the effect was insignificant as the material of the insole was made of the same hardness.

In addition, the conventional insole has a fear of smell and harmful bacteria caused by sweating when used for a long time, when the shoe is worn barefoot in the summer, there was an inconvenience that the insole falls or dull when taking off the shoe due to sweat.

The background art described above is technical information possessed by the inventors for the derivation of the present invention or acquired during the derivation process of the present invention, and is not necessarily known technology disclosed to the general public before the present application.

The present invention can provide a shock absorbing effect without increasing the thickness, and in part by varying the hardness, the comfort can be maintained even if used for a long time, and provides an insole of shoes having the function of antibacterial, anti-odor, anti-mildew .

Technical problems other than the present invention will be easily understood through the following description.

According to one aspect of the invention, the insole of the shoe made of a polyurethane gel (gel) material consisting of a central portion and the outer portion, the central portion, the diameter of the particles 50 to 100 parts by weight of polyol, polyol 0.05 to 2 parts by weight of 100 nm nano silver powder, and 25 to 45 parts by weight of isocyanate are mixed and cured into a gel. The outer portion of the nanoparticle is 50 to 100 nm in diameter with respect to polyol and 100 parts by weight of polyol. Provided is an insole of a shoe, characterized in that it is formed by mixing 0.05 to 2 parts by weight of silver powder, and 20 to 45 parts by weight of isocyanate to harden into a gel. In the center portion, 0.5 to 15 parts by weight of toner may be further mixed with respect to 100 parts by weight of polyol.

The central portion may have a Shore hardness of 20 to 40, and the outer portion may have a Shore hardness of 40 to 70. The outer portion may be formed by curing in a mold of a predetermined shape for 5 to 20 minutes at a temperature of 60 to 80 degrees Celsius.

The insole may be inserted in the heel portion or the heel portion of the shoe, and in this case may further include a anti-rolling protrusion protruding from the surface of the insole, corresponding to the position between the sole and the toe supported by the insole.

The outer portion may be formed by further mixing 0.2 to 2 parts by weight of a foaming agent such as water, HCFC-141b, C-Pentane, etc. with respect to 100 parts by weight of polyol, and may further include cotton, polypropylene (PP), polyethylene (PE), and polyester. It may be covered with a fabric made of a material such as. In this case, the fabric may be silver nano-coated by sequentially repeating the process of applying and drying the silver nano stock solution having a concentration of 50 to 5000 ppm on the surface thereof.

The insole may be formed in a shape in which the thickness becomes thicker from the point corresponding to the inner side of the foot supported by the insole to the point corresponding to the outer side of the foot, in which case the insole has an inclination of 1 to 15 degrees and the thickness is increased. It can be formed to be thick.

Other aspects, features, and advantages other than those described above will become apparent from the following drawings, claims, and detailed description of the invention.

According to a preferred embodiment of the present invention, by applying a polyurethane as the material of the insole and varying its hardness according to the contact area of the foot, it is possible to obtain a shock absorbing effect without increasing the thickness of the insole, pain in the foot even if used for a long time Less fatigue and less, even if the insole is used for a long time by mixing nano silver powder with polyurethane or silver nano coating the surface of the insole can suppress the occurrence of odor or bacteria.

In addition, when the insole according to the present embodiment is applied to the front heel portion, such as high heels, by forming a projection preventing protrusion in the position between the sole and the toe, it is possible to prevent the sole of the sole to be pushed even if worn for a long time.

In addition, when the insole according to the present embodiment is applied to golf shoes, etc., by inclining the height of the insole from the inner side to the outer side of the foot, the foot is prevented from being pushed outwards or opening during golf swing, and can easily grasp the center. It can also help to correct the swing posture.

1 is a plan view showing an insole of a shoe according to an embodiment of the present invention.

Figure 2 is a plan view showing an insole of a shoe according to another embodiment of the present invention.

3 is a cross-sectional view taken along line AA ′ of FIG. 2;

Figure 4 is a plan view showing an insole of a shoe according to another embodiment of the present invention.

FIG. 5 is a sectional view taken along line BB ′ in FIG. 4;

1: center part 3: outer part

5: rolling prevention protrusion

As the present invention allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the written description. However, this is not intended to limit the present invention to specific embodiments, it should be understood to include all changes, equivalents, and substitutes included in the spirit and scope of the present invention.

When a component is referred to as being "connected" or "connected" to another component, it may be directly connected to or connected to that other component, but it may be understood that other components may be present in between. Should be. On the other hand, when a component is said to be "directly connected" or "directly connected" to another component, it should be understood that there is no other component in between.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. As used herein, the terms "comprise" or "have" are intended to indicate that there is a feature, number, step, action, component, part, or combination thereof described on the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, components, or a combination thereof.

In addition, in the description with reference to the accompanying drawings, the same components regardless of reference numerals will be given the same reference numerals and duplicate description thereof will be omitted. In the following description of the present invention, if it is determined that the detailed description of the related known technology may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

1 is a plan view showing an insole of a shoe according to an embodiment of the present invention. Referring to FIG. 1, a central portion 1 and an outer portion 3 are shown. 1 illustrates a form in which the insole according to the present embodiment is inserted into the heel portion of the shoe.

The present embodiment is characterized by maximizing the shock absorbing effect by varying the hardness of the insole of the shoe in accordance with the site of the load applied to the sole, that is, by varying the hardness for a specific part of the insole.

The insole according to the present embodiment is basically made of a polyurethane material formed by mixing and curing polyol and isocyanate. Thus, the insole is made of a polyurethane material so that the density is uniform according to the contact position of the foot. Only the hardness can be adjusted differently.

In addition, instead of manufacturing the insole in the shape of the unevenness by varying the thickness of the insole according to the area where the foot touches, that is, the area under load, it is easy to manufacture by adjusting the hardness differently for each site under load. And thinner thickness can derive more than equivalent shock absorbing effect.

The shoe insole according to the present embodiment is composed of a central portion 1 and an outer portion 3 and each portion is made of a polyurethane gel material having different hardness. That is, by adjusting the Shore hardness of each part of the shoe insole that is most closely related to the sole, the center portion (1) to 20 to 40, the outer portion (3) to 40 to 70 differently, wearing shoes To ease the foot and absorb the shock of the heel when walking, thereby protecting each joint of the body.

In this way, the material of the insole is a polyurethane gel without bubbles at all, instead of the foam, it is possible to prevent the insole from deforming when used for a long time, and maintain the original shape of the insole for a long time.

In order to form a low hardness polyurethane gel in the central part 1, the mixing ratio of polyol and isocyanate is preferably mixed 25 to 45 parts by weight of isocyanate with respect to 100 parts by weight of polyol. Polyols and isocyanates may be used as raw materials for the production of polyurethane, and various specifications may be used. For example, when Dow Chemical uses HA6059, HA6060, HB6013, and the like, the specifications of each product are shown in the following table.

Table 1

Raw material	Polyol		Isocyanate	Experiment method
Model Number	HA6059	HA6060	HB6013	Experiment method
Viscosity (at 20 ° C) (mPas)	700-900	700-900	4000-5500	DIN 53019/1
Flash point (℃)	> 200	> 200	> 200	DIN 52758
Density (at 20 ° C) (g / cc)	1.00-1.05	1.00-1.05	1.08-1.12	DIN 53217/1 + 2

The physical properties such as the hardness of the polyurethane gel can be adjusted by selecting an appropriate raw material and adjusting the mixing ratio of each raw material according to the part to be applied to the insole of the shoe and the use and function of the insole. For example, the physical properties in the case of mixing the raw materials in the above table are shown in the following table.

TABLE 2

Mixed raw material properties	HA6059 + HB6013	HA6060 + HB6013	Experiment method
Density (g / cm ³ )	1.03	1.03	DIN 53217/1 + 2
Longitude 00	64-66	0-3	ASTM D 2240-97
Shore A	17-19	0	ASTM D 2240-97
Tensile Strength (N / mm ² )	0.27	0.11	DIN 53504 200 mm / min
Elongation (%)	86	76	DIN 53504 200 mm / min
Tear strength (N / mm)	0.90	0.47	DIN 53515 500 mm / min

In the case of the above table, physical properties such as hardness of polyurethane gel can be adjusted by selecting specific polyol raw materials (HA6059, HA6060, etc.) or adjusting the ratio of each product appropriately and mixing and reacting with isocyanate (HB6013). have.

On the other hand, in order to derive the effects of antimicrobial, anti-odor, etc. by the silver nano treatment on the insole according to the present embodiment as described below, the nano silver powder may be further mixed 0.05 to 2 parts by weight with respect to 100 parts by weight of the polyol. Nano silver powder may use a product having a particle diameter of about 50 to 100 nm, and is sufficiently dispersed so that the particles are not visible when mixed.

Furthermore, the gel-like polyurethane after hardening can be formed in desired color by mixing and disperse | distributing 0.5-15 weight part of toners further with respect to 100 weight part of polyols. The toner may be used in various colors as necessary.

By reacting the polyol in which the toner and the nano silver powder are mixed and dispersed with the isocyanate at the above-described weight ratio, the polyurethane gel to be applied to the central portion 1 according to the present embodiment can be formed. That is, a polyurethane gel having a Shore hardness of about 20 to about 40 is formed by curing the polyol and isocyanate in a low hardness mold having a thickness of about 1 to 10 mm.

Thus, the polyurethane gel formed at a low hardness can be used in a portion that receives a lot of load, such as a site where the heel touches, thereby maximizing the shock absorbing effect of the insole according to the present embodiment.

On the other hand, in the case of the outer portion 3, it is preferable to mix 20 to 45 parts by weight of isocyanate with respect to 100 parts by weight of polyol in order to form a polyurethane gel that is relatively harder than the central part 1. In this case, as described above, polyols and isocyanates of various specifications may be used.

In addition, the nano silver powder having a particle diameter of about 50 to 100 nm can be further mixed and dispersed with respect to 100 parts by weight of polyol in the same manner as in the case of the above-described center part 1.

By reacting the polyol and isocyanate mixed and dispersed in the nano silver powder in the above-described weight ratio, it is possible to form a polyurethane gel to be applied to the outer portion 3 according to the present embodiment. That is, by placing the mixture in a mold and curing for 5 to 20 minutes at a temperature of 60 to 80 degrees Celsius, a polyurethane gel having a Shore hardness of about 40 to 60 can be formed.

As such, the insole according to the present embodiment is made of a non-foamed gel phase instead of using the existing foam, so that the original shape is preserved even when used for a long time, even if the insole is contaminated in the process of use can be easily washed and reused have.

In addition, since the insole according to the present embodiment is divided into a central part 1 and an outer part 3 and has two different hardnesses according to parts, the hardness felt by the part of the wearer when wearing shoes is different, and the load is different. It can absorb the shock effectively in the part receiving a lot.

Since the polyurethane gel according to the present embodiment is mixed with nano silver powder of nano unit, it can exhibit the performance of antibacterial, anti-odor, anti-mildew, and the like performance of the nano silver powder according to the use, function, etc. of the shoe to be used insole. By adjusting the content, it is possible to ensure optimal performance.

When the surface of the insole is covered with a fabric and nano silver treatment is applied only to the fabric, the performance of silver nano coating tends to decrease due to repeated washing. However, the insole according to this embodiment contains nano silver powder directly in the raw material. By doing so, there is an advantage that a continuous effect is derived regardless of washing.

Furthermore, the polyol according to the present embodiment may be further mixed with the raw material of the fragrance as well as the nano silver powder to react and cure, thereby making it possible to feel a fresh fragrance such as herbal aroma.

On the other hand, the polyurethane insole according to the present embodiment has a certain degree of adhesiveness as it is, when the shoes are worn or taken off barefoot in the summer, there is a reduced risk of the insole falling or languishing, the state wearing the shoes The insole is also separated from the shoe to prevent it from moving separately.

As described above, the insole according to the present embodiment uses a hard material, which is slightly hard, to reduce the fatigue of the foot while maintaining the shape of the foot while reducing the fatigue of the foot. Received the most, the fatigue can easily come to the part, for example, the center of the heel (1), such as by using a soft low-hard material to enable more effective shock absorption.

In addition, the insole according to the present embodiment can obtain an excellent shock absorbing effect without increasing the thickness of the insole by using a special material, such as polyurethane gel as a material, can be used as a substitute for the existing insole or substitute for the existing insole Its excellent applicability, such as being replaceable.

Furthermore, as described above, aromatic raw materials such as aroma and herbal flavors may be added to the raw materials of insoles to improve the fit with a persistent fragrance, and antimicrobial and anti-odor effects may be obtained by adding nano silver powder.

2 is a plan view showing an insole of a shoe according to another embodiment of the present invention, Figure 3 is a cross-sectional view taken along line AA 'of FIG. 2 and 3, a central portion 1, an outer portion 3, and a rolling preventing protrusion 5 are illustrated.

In the present embodiment, insoles inserted in shoes such as high heels are provided to prevent the shape of the foot from moving forward by protruding the anti-rolling protrusion 5 at an appropriate position on the insole.

That is, in the case of shoes with a high heel and a low heel, such as high heels, weight is concentrated on the metatarsal portion of the foot due to gravity, which may cause the foot to push forward. In order to prevent this, impact insoles made of various materials such as sponge, rubber, silicone, and urethane have been developed. However, since the shape is flat, most of them have a limit that ultimately prevents the foot from moving forward when walking. .

The insole shown in Figures 2 and 3 is an example of the case that is inserted in shoes such as high heels to support the front heel portion of the sole, corresponding to the position between the sole and the toe of the anti-slip projection (5) on the surface of the insole It is insulated.

That is, insoles used for high heels protrude the protrusions 5 at a height of about 1 to 3 mm corresponding to the position between the toes and the soles, thereby preventing the soles of the soles from moving forward in the heels during walking. will be.

As such, by forming the protrusions 5 at specific positions of the insole, not only the foot is pushed in the state of wearing the shoe, but also the phenomenon of the insole sticking to the sole when the shoe is taken off can be prevented.

By forming a protrusion 5 at the end of the metatarsal bone where the position of the foot and the toe, that is, the most severe point of foot sliding, is to prevent the foot from being pushed during walking, thereby reducing the fatigue feeling on the foot. The shape of the projection preventing protrusion 5 may correspond to the shape of the foot, for example, a fan shape or the like, as shown in Figure 2, by forming a shape that can be inserted into the bone between the sole and the toe as shown in Figure 2 Accordingly, the load acting on the anti-rolling protrusion 5 can be dispersed.

4 is a plan view showing an insole of a shoe according to another embodiment of the present invention, Figure 5 is a cross-sectional view taken along line BB 'of FIG. 4 and 5, a central portion 1 and an outer portion 3 are shown.

In this embodiment, insoles inserted in shoes such as golf shoes, by inclining the height of the insole from the inner side of the foot toward the outer side, thereby preventing the foot from being pushed out during the golf swing to correct the swing posture .

The insole according to the present embodiment is inserted in sneakers or work shoes such as golf shoes, and the base material is a polyurethane gel formed by reacting polyol and isocyanate as in the case of the above-described embodiment.

That is, the low hardness polyurethane gel to be applied to the central part 1 may be prepared by mixing 25 to 45 parts by weight of isocyanate with respect to 100 parts by weight of polyol, and in order to derive effects such as antibacterial and deodorization, 100 parts by weight of polyol 0.05 to 2 parts by weight of nano silver powder having a particle diameter of about 50 to 100 nm may be further mixed and dispersed.

In addition, 0.5 to 15 parts by weight of the toner may be further mixed and dispersed with respect to 100 parts by weight of the polyol to form the polyurethane in a desired color, as in the case of the above-described embodiment.

On the other hand, in the case of the outer portion 3, in order to form a polyurethane gel having a hardness that is relatively higher than the central portion 1, 20 to 45 parts by weight of isocyanate may be mixed with respect to 100 parts by weight of polyol, and 100 parts by weight of polyol With respect to the nano silver powder, 0.05 to 2 parts by weight can be further mixed and dispersed as described above.

Furthermore, the insole according to the present embodiment may be mixed with 0.2 to 2 parts by weight of a blowing agent such as water, HCFC-141b, C-Pentane, etc. with respect to 100 parts by weight of the polyol in the outer portion 3 to have foamability. .

In the case of sneakers or work shoes, since the shoes are worn when there is a large amount of activity, in the central part 1, a polyurethane gel of low hardness is applied to obtain a shock absorbing effect as in the above-described embodiment, and in the outer part 3, polyurethane is fixed. By releasing enough foam to maximize the role of dispersing weight and maintaining posture.

Furthermore, in the case of sneakers or work shoes, the feet get sweaty depending on the activity, so the surface of the insole is covered with a fabric made of cotton, PP (Polypropylene), PE (Polyethylene), polyester, etc. Can be made smoothly.

On the other hand, in the above-described embodiment, the nano silver powder was mixed with the raw material to further develop the antibacterial and deodorant effect, and in this embodiment, the silver nano coating is also applied to the fabric covering the surface of the insole to prevent the antibacterial, deodorant and antifungal molds. The role was maximized.

For example, by repeating the process of applying and drying the silver nanostock solution having a concentration of 50 to 5000 ppm on the surface of the fabric, the fabric can be subjected to the silver nano coating process.

Therefore, the outer portion 3 of the insole according to the present embodiment, the nano-silver powder is mixed, dispersed polyol and isocyanate in the above-described weight ratio to put in the mold, and the surface of the fabric described above, after the Celsius By curing for 5 to 20 minutes at a temperature of 60 to 80 degrees, it is possible to form an expandable polyurethane gel having a Shore hardness of about 40 to 70 degrees.

As such, since the insole according to the present embodiment is divided into a central part 1 and an outer part 3 and has two different hardnesses according to parts, the hardness felt by the wearer for each part is different when the shoes are worn. It is as described above that the shock can be effectively absorbed in the part receiving a lot.

In addition, since the polyurethane gel according to the present embodiment is mixed with nano silver powder of nano units, it can exhibit the performance of antibacterial, anti-odor, anti-mold, etc., by further mixing the raw materials such as nano silver powder and fragrance, reaction, By curing, it is possible to feel a fresh fragrance, such as herbal flavors as described above.

On the other hand, the insole according to the present embodiment can be applied to the golf shoes, in this case it can be inclined to the outside of the foot high and the inner low to prevent the golfer's foot to spread outwards and easily grasp the center during the swing of the golfers.

That is, the height of the insole is increased so that the height increases from the point supporting the inner side of the foot ('IN' of FIG. 4) to the point supporting the outer side of the foot ('OUT' of FIG. 4). It can form, and the inclination can be made into about 1 to 15 degrees.

The inclination value may be variously formed in a range of 1 to 15 degrees, such as 1 to 5 degrees, or 5 to 15, depending on the use of the shoe.

By forming the insole with the inclined shape and inserting it into the golf shoe, it smoothes the movement of the center of gravity during golf swing, helps to correct the wrong swing position of the lower body, and prevents the foot from being pushed out during the swing. have.

As the insole is inclined at an angle of about 1 to 15 degrees from the outside to the inside, the wearer can feel that the fatigue is much reduced even though the direct difference is not felt.

The insole according to the present embodiment is not necessarily to be used only for golf shoes, of course, can be used for shoes of other uses to be worn in the case of high activity such as work shoes, running shoes.

As described above, the insole according to the present embodiment can stably prevent the phenomenon of weight loss on the outside of the right foot during backswing and the phenomenon of weight loss on the outside of the left foot during downswing by applying to golf shoes.

By using two polyurethane materials with different hardness instead of sponge, urethane, silicone, etc., it is easy to absorb shock at the place where fatigue is easily received due to a lot of force, and the appearance is beautiful.

In addition, the insole according to the present embodiment can obtain an excellent shock absorbing effect without increasing the thickness of the insole by using a special material, such as polyurethane gel as a material, can be used as an alternative to the existing insole or substitute for the existing insole Its excellent applicability, such as being replaceable.

Furthermore, as described above, aromatic raw materials such as aroma and herbal fragrance may be added to the raw material of the insole to improve the fit with a continuous fragrance, and nano silver or charcoal coating is applied to the fabric to add nano silver powder to the raw material or to cover the surface. The antibacterial and anti-odor effect can be obtained by applying.

Although the above has been described with reference to a preferred embodiment of the present invention, those skilled in the art to which the present invention pertains without departing from the spirit and scope of the invention as set forth in the claims below It will be appreciated that modifications and variations can be made.

Claims

Consists of a central part and an outer part, and is an insole of shoes made of polyurethane gel,

The central portion,

Polyol, with respect to 100 parts by weight of the polyol,

0.05 to 2 parts by weight of nano silver powder having a particle diameter of 50 to 100 nm; And

Formed by mixing 25 to 45 parts by weight of isocyanate and curing into gel

The outer portion

Polyol, with respect to 100 parts by weight of the polyol,

0.05 to 2 parts by weight of nano silver powder having a particle diameter of 50 to 100 nm; And

Insole of a shoe, characterized in that it is formed by mixing 20 to 45 parts by weight of isocyanate and curing into a gel.
The method of claim 1,

Insole of the shoe, characterized in that the toner further mixes 0.5 to 15 parts by weight with respect to 100 parts by weight of the polyol.
The method of claim 1,

Insole of the shoe, characterized in that the central portion has a Shore hardness of 20 to 40, the outer portion has a Shore hardness of 40 to 70.
The method of claim 1,

Insole of the shoe, characterized in that the insole is inserted in the heel portion of the shoe.
The method of claim 1,

The insole is inserted in the front heel portion of the shoe, the insole of the shoe further comprises an anti-protrusion projection protruding from the surface of the insole corresponding to the position between the sole and the toe supported by the insole.
The method of claim 1,

The outer portion is based on 100 parts by weight of the polyol,

Insole of a shoe, characterized in that formed by further mixing 0.2 to 2 parts by weight of any one or more blowing agents selected from the group consisting of water, HCFC-141b and C-Pentane.
The method of claim 1,

The outer portion is covered with a fabric made of one or more materials selected from the group consisting of cotton, polypropylene (PP), polyethylene (PE) and polyester,

The fabric is insole of the shoe, characterized in that the silver nano-coating treatment by sequentially repeating the process of applying and drying the silver nano-stock solution having a concentration of 50 to 5000 ppm on the surface.
The method of claim 1,

The insole is insole of the shoe, characterized in that the thickness is formed from the point corresponding to the inner side of the foot supported by the insole to the point corresponding to the outer side of the foot becomes thicker.
The method of claim 8,

The insole has a slope of 1 to 15 degrees and the thickness of the shoe insole characterized in that the thickened.