KR101638304B1 - Shoes having high elasticity midsole - Google Patents

Abstract

The present invention relates to a shoe provided with a high-elasticity midsole including: an outsole corresponding to a shoe sole; a midsole provided with an outer skin layer placed on the outsole and coupled with a pulp by a fabric and a first graphite foam layer stacked on a bottom surface of the outer skin layer, a part of the first graphite foam layer being relatively larger in compression density than the other part of the first graphite foam layer so that a bending deflection is prevented between a heel part of the outsole and a bottom section extending from the heel, and having the same thickness throughout the entire area of the midsole; an insole placed on the midsole, in which a mesh protection unit, an anion ceramic ball, a polyurethane foam layer, a latex foam layer, a second graphite foam layer, a wood impregnation sheet layer, and a graphene layer are stacked from below upwards; an upper connected to the outsole and surrounding a user′s foot; and a foreign matter prevention cap placed between a shoe string and a string hole of the upper, the shoe string blocking a gap in the vicinity of a bent part after coming out of the string hole.

Description

Shoes having high elasticity midsole {Shoes having high elasticity midsole}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a shoe having a high elasticity midsole, and more particularly, to a shoe having a high elasticity midsole capable of exhibiting excellent heat dissipation, light weight, and high elasticity.

In general, shoes are used as fashion items and practical means for protecting the user's feet when walking, such as shoes and shoes.

In particular, the shoes are made to be worn by men or women using synthetic materials such as natural leather, artificial leather, cloth and leather.

For example, the shoes of the prior art include a midsole, which is disposed on an outsole and used as a flooring for shoes, an insole called an insole or an insole, which is located on the upper part of the midsole and provides a cushioning feeling in a worn state, And an upper portion made of a leather material molded to wrap the wearer's foot.

Thus, the outsole, the midsole, the insole, and the upper are completed by a general shoe processing process such as a shaping operation, an upper and a midsole fixing operation, an outsole bonding or sealing operation.

Particularly, the outsole comprises a front pad portion for supporting a front portion of the user's foot, a heel for supporting the heel, and a waist portion for connecting the front pad portion and the heel. Since the height of the heel is higher than that of the front pad portion, When the outsole is brought into contact with the ground, there is a drawback that the waist portion between the front pad portion and the heel portion is bent.

In order to solve such a disadvantage, a steel part called a waist (not shown) is fixed to the waist portion of the midsole by an adhesive method in the prior art.

However, since the waist is a steel part or a metal material, corrosion or rusting may occur over a long period of time, and the bonded portion may be loosened and partially separated from the waist portion of the midsole to weaken the supporting force of the waist, The overall weight of the shoe is increased, making it difficult to manufacture a lightened shoe.

In addition, when the adhesive strength to the midsole and the waist is weakened or loosened, there is a disadvantage in that the adhesive portion of the waist and the midsole is adhered and a falling noise is generated, thereby causing a product failure.

Particularly, in the case of the insole, the synthetic resin material for providing a cushioning feeling is only closed with an attaching cloth or a cloth material, so that water caused by the body temperature or humidity of the user inside the shoe is deposited and infiltrated into the insole, It is necessary to have a new means of maintaining a comfortable insole quality while maintaining high elasticity.

In addition, shoes are very difficult to impart functionality within a standardized frame, and especially in summer, development of functional shoes that can solve these problems is very difficult because the heat release performance is so low as to cause athlete's foot or the like on the user's sole or toe It is an urgent situation.

In addition, the conventional shoe is equipped with an eyelet (aka: Hadome) which protects around a string hole or a string hole for inserting a shoelace, but external foreign matter or dust penetrates through the hole through a gap between a shoelace and a string hole There is a problem of polluting the inside of shoes.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems and disadvantages, and it is an object of the present invention to provide an insole, which prevents infiltration of foreign matter by the foreign matter prevention cap and has an insole having high elasticity and durability, The present invention is to provide a shoe having a high elasticity midsole which is lightweight, durable and maintains a pleasant inside of the shoe, while providing functionality to a high-quality shoe product.

According to an aspect of the present invention, there is provided a shoe having a high elasticity midsole, including: an outsole corresponding to a floor window of a shoe; And a first graphite foam layer disposed on the bottom of the skin layer, wherein the first graphite foam layer is disposed on the outsole and is joined with the pulp and the fabric, and the first graphite foam layer stacked on the bottom surface of the skin layer, wherein a warping deformation between the heeled portion of the outsole and the bottom portion extending from the heel A midsole having a relatively large compression density of a portion of the first graphite foam layer relative to other portions of the first graphite foam layer and a uniform midsole thickness throughout the entire midsole; An insole layered on top of the midsole and stacked from bottom to top in a mesh protection, an anionic ceramic ball, a polyurethane foam layer, a latex foam layer, a second graphite foam layer, a wood impregnated sheet layer and a graphene layer; An upper which is connected to the outsole and encloses a user's feet; And a foreign matter prevention cap which is disposed between the shoelace and the string hole of the upper, and which blocks the gap around the bent portion where the shoelace passes through the string hole.

Wherein the foreign matter prevention cap is open to one side so that the shoelace can pass through in the lateral direction and has a hollow lower portion fitted into the string hole and a protrusion protruding from the outer circumferential surface of the hollow lower portion, And a dome-shaped cover portion integrally formed on the upper portion of the hollow lower portion and having an upper portion opened to allow the shoelace to pass in the upper direction, And the stopping jaws are spaced apart from each other corresponding to the thickness of the string hole of the shoe.

The first graphite foam layer of the midsole was prepared by heating 10 g of a polyphenylcarbosilane having a molecular weight of 3,000 in 50 g of a cyclohexane to prepare a 16% by weight polyphenylcarbosilane solution, Lt; RTI ID = 0.0 > 1 C, < / RTI >

The shoe having the high elasticity midsole according to the present invention further includes a foreign matter prevention cap disposed between the shoelace and the string hole inserted in the string hole of the shoe so as to minimize the gap between the shoelace and the string hole, So that it is possible to prevent the problem of discoloration of the leather around the shoe string or pollution of the inside of the shoe.

The shoe provided with the high elasticity midsole according to the present invention provides the insole layered with the mesh protection portion, the anion ceramic ball, the polyurethane foam layer, the latex foam layer, the second graphite foam layer, the wood impregnated sheet layer and the graphene layer, The surface of the wood-impregnated sheet layer exhibits hydrophobic surface characteristics, thereby exhibiting excellent thermal conductivity while preventing contamination of the insole by moisture. In particular, the surface of the wood-impregnated sheet layer can be prevented from being damaged or corroded And can help to reduce the weight of shoes.

The shoe insole having the high elasticity midsole according to the present invention is advantageous in that the surface texture is natural and the texture is excellent because the insole of the shoe with the high elasticity midsole is provided with the wood impregnated sheet layer which makes the eco-friendly wood material excellent in workability.

The shoe insole equipped with the high elasticity midsole according to the present invention is advantageous in that the second graphite foam layer is provided between the wood-impregnated sheet layer and the latex foam layer, so that the insole shape is very excellent and lightweight.

An oral insole having a high elasticity midsole according to the present invention is provided with an anionic ceramic ball made of a porous material to exhibit an antibacterial and deodorizing function and an anionic ceramic ball is protected by a mesh protecting portion, Can be minimized.

The shoe midsole having the high elasticity midsole according to the present invention comprises a skin layer combined with pulp and fabric and a first graphite foam layer laminated on the bottom surface of the skin layer. In order to prevent warpage of the waist portion of the outsole described above, the midsole according to the present invention has a relatively large portion facing the waist portion of the outsole when the first graphite foam layer is molded, The thickness of a portion of the first graphite foam layer and the thickness of the other portion of the first graphite foam layer are equalized but the compressive density of a portion of the second graphite foam layer previously formed to be relatively thick is relatively higher than that of the other portion of the first graphite foam layer So that it is possible to solve the problem of attaching the existing wrist while supporting the warp of the waist portion of the outsole.

According to another aspect of the present invention, there is provided a shoe having a high elasticity midsole, comprising: a wire portion for providing an elastic force as a heat transfer path in the insole; a first magnet attached to an end of the wire portion; And a second magnet fixed to the heat dissipating plate and exposed to the inner surface of the upper part of the upper part, so that when the insole is inserted into the shoe, the magnets are connected to each other to complete the heat transfer path, Is released through a pair of wire magnets and a heat sink of the insole to maximize the heat radiation function of the shoe while maintaining high elasticity.

1 is an exploded perspective view of a shoe having a high elasticity midsole according to a first embodiment of the present invention;
Fig. 2 is an enlarged cross-sectional view for explaining a state in which the foreign matter prevention cap shown in Fig. 1 is fastened to a string hole of a shoe; Fig.
3 is an enlarged cross-sectional view of line AA of the insole shown in Fig.
4 is an exploded perspective view of a shoe having a high elasticity midsole according to a second embodiment of the present invention;
5 is an enlarged cross-sectional view of line BB of the insole shown in Fig.
6 is a plan view for explaining a coupling relation between the wire portion, the first magnet, the heat sink, and the second magnet shown in Fig. 5;

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. And is provided to fully convey the scope of the invention to those skilled in the art, and the present invention is defined by the claims.

It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification. &Quot; comprises " and / or "comprising" when used in this specification is taken to specify the presence or absence of one or more other components, steps, operations and / Or add-ons. Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1st Example

FIG. 1 is an exploded perspective view of a shoe with a high elasticity midsole according to a first embodiment of the present invention, FIG. 2 is an enlarged sectional view for explaining a state where the foreign matter prevention cap shown in FIG. 1 is fastened to a string hole of a shoe , And Fig. 3 is an enlarged cross-sectional view of line AA with respect to the insole shown in Fig.

1, an outsole 100, a midsole 200, an insole 300, an upper part 400, and an upper part 400 are stacked or combined in order from the bottom of the shoe upward. And a foreign matter prevention cap 500 which is further provided for each string hole 420 in the upper part 400.

The outsole 100 is made of a synthetic resin material or rubber material and has a shape corresponding to the bottom window of the shoe in advance. The outsole 100 may be formed in various shapes corresponding to the bottom of the shoe, and thus may not be limited to a specific shape. The bottom surface of the outsole 100 may have a plurality of grooves and protrusions formed thereon.

The midsole 200 is disposed on the outsole 100. For example, the midsole 200 may be attached and fixed on the inner upper surface of the outsole 100 through an adhesive (not shown). As shown in FIG. 1, the midsole 200 includes a skin layer 210 joined with a pulp and a fabric, and a first graphite foam layer 220 bonded or laminated to the bottom surface of the skin layer 210.

Here, the first graphite foam layer 220 was prepared by heating 10 g of a polyphenylcarbosilane having a molecular weight of 3,000 in 50 g of a cyclohexane to prepare a 16% by weight polyphenylcarbosilane solution, Lt; RTI ID = 0.0 > 1 C, < / RTI >

Since the first graphite foam layer 220 is a high-strength and lightweight material, it can contribute to verbal weight saving while maintaining the structural rigidity of the midsole 200.

The first graphite foam layer 220 may have a wave cross-sectional structure extending along the lengthwise direction of the shoe so that it can have flexibility together with the outsole 100.

The first graphite foam layer 220 is spaced discontinuously in the lengthwise direction of the shoe and is formed of a plurality of strip sheets continuous in the widthwise direction of the shoe so as to naturally realize an interlocking operation with the outsole 100.

The midsole 200 has advantages over conventional midsole products including a general resin reinforcing material or an iron core (e.g., a waist), minimizing the weight while relatively increasing the high elasticity and structural rigidity while reducing the thickness .

In particular, the first graphite foam layer 220 of the midsole 200 has a flexural deformation between the area where the bend 110 of the outsole 100 is located and the bottom area 120 extending from the bend 110 toward the shoe end The compressive density of the portion 222 of the first graphite foam layer 220 is relatively larger than that of the other portion 221 of the first graphite foam layer 220. [

The midsole 200 has the same midsole thickness T throughout the entire midsole.

On the other hand, the midsole 200 is not shown with the midsole thickness T through a design change, but may be formed differently as described below. For example, in the first graphite foam layer 220, a portion 222 having a relatively large compression density may be formed to protrude downward relative to the other portion 221 to have a relatively thick thickness, It is possible to more effectively reinforce the warping strain.

The insole 300 is disposed on the top of the midsole 200. The insole 300 may also be fixed to the upper surface of the midsole 200 through an unillustrated adhesive.

3, the insole 300 includes a mesh protector 310, an anionic ceramic ball 320, a polyurethane foam layer 330, a latex foam layer 340, a second A graphite foam layer 350, a wood-impregnated sheet layer 360, and a graphene layer 370.

The upper part 400 is connected to the outsole 100 or is fixed along the rim of the outsole 100 to cover the user's feet. The upper 400 may be formed of a conventional shoe material such as leather, synthetic leather, fabric, and the like.

The foreign matter prevention cap 500 is formed by using any one of a soft synthetic resin material, a synthetic rubber material and a colored silicone material and is disposed or mounted between the shoelace string 410 of the upper 400 and the string hole 420 . The anti-foreign matter cap 500 plays a role of blocking the gap around the bent portion where the shoelace 410 exits the string hole 420.

The foreign matter prevention cap 500 is fixed to the mounting position by the shape described later with reference to FIG. 2, and can be configured not to be easily separated.

Referring to FIG. 2, the foreign matter prevention cap 500 is attached and used after the shoe strap 410 is inserted into the strap hole 420, and includes a strap hole 420 for preventing foreign matter from entering the shoe. Or the like.

The foreign matter prevention cap 500 includes a hollow lower portion 510, a stopping jaw portion 520, and a cover portion 530 integrally.

The hollow bottom portion 510 is open to one side so that the shoelace 410 extends upward in the inside of the shoe and then passes in the lateral direction outside the shoe. That is, the hollow lower portion 510 has an opening 511 opened to one side. Here, the rim of the opening 511 is in close contact with the outer surface of the shoelace 410, so that foreign matter can not easily enter the shoe.

The hollow bottom portion 510 is fitted to the string hole 420 while being in contact with the outer surface of the bottom hole 512 opened at the bottom and the curled elastic member 410 bent through the opening 511.

The stopper 520 protrudes from the outer circumferential surface of the hollow lower portion 510 except for the opening portion 511 and extends along the outer circumferential surface of the hollow lower portion 510, It plays the role of hanging downward.

The stopper 520 has an inclined surface at the corner between the bottom surface and the side surface of the protruded portion so that the vertically downward separation of the foreign matter prevention cap 500 can be easily performed, I am responsible.

The cover portion 530 is integrally formed on the upper portion of the hollow bottom portion 510. The cover portion 530 is formed in a dome shape in which a portion of the upper portion is opened so that the shoelace 410 can pass in the upward direction. The open portion 531 of the cover portion 530 is connected to the opening 511 of the hollow bottom portion 510 to prevent interference with the shoelace 410 when the foreign matter prevention cap 500 is mounted .

Since the open portion 531 of the cover portion 530 is formed in a streamlined structure and can be closely attached to the outer circumferential surface of the shoelace 410, infiltration of foreign matter can be minimized.

Since the cover portion 530 and the stopping portion 520 are spaced apart from each other corresponding to the thickness of the string hole 420 of the shoe so that the protruding upper surface of the stopping portion 520 is located on the bottom surface of the string hole 420 And as a result, the foreign matter prevention cap 500, which is once mounted, may not be easily separated from the strap hole 420.

Referring to FIG. 3, the insole 300 includes a mesh protective portion 310 disposed or fixed on its bottom surface.

The mesh protecting portion 310 is formed of a radiating material. The upper surface of the rim protecting portion 310 is fixed by an adhesive agent or a sewing thread and the upper surface inside the rim is brought into close contact with the bottom surface of the anion ceramic ball 320 so that the anion ceramic ball 320 is damaged It plays a role of prevention in advance.

The anionic ceramic balls 320 of the insole 300 may be fixed by respective mesh protectors 310 or may be fixed to the bottom of the insole 300, that is, the polyurethane foam layer 330 of the insole 300, And are fixed to a plurality of spaced-apart seating grooves 331 from the bottom surface of the base plate.

The anion ceramic ball 320 is composed of a linear low density polyethylene having a weight of 50%, a wood pulp powder having a weight of 10%, a silver powder having a weight of 5%, a loess powder having a weight of 25%, and a porous carbon nano powder having a weight of 10% And the porous carbon nano powder is formed of any one of carbon nanotubes, artificial graphite, carbon fiber, carbon black and activated carbon, and is formed into a porous sphere by blowing external air in a heated state and cooling it.

The anionic ceramic balls 320 can absorb water or bacteria that cause odor in the oral cavity as a porous body, and can keep the inside of the oral cavity comfortably due to release of anion due to carbon nanofibers.

The polyurethane foam layer 330 serves to provide an elastic force or a cushion force to the insole 300.

The polyurethane foam layer 330 has a plurality of seating grooves 331 for fixing the anion ceramic balls 320 described above.

The upper surface of the polyurethane foam layer 330 is fixed to the bottom of the latex foam layer 340 with an adhesive.

The latex foam layer 340 of the insole 300 provides a viscoelastic characteristic in which the pressing and restoring speed is relatively slower than that of the polyurethane foam layer 330 to provide a sense of cushion and a sense of stability.

The second graphite foam layer 350 of the insole 300 may be formed identically except for the thickness of the first graphite foam layer for midsole. That is, the second graphite foam layer 350 is formed in the form of a sheet having a thickness of 20 mu m which is relatively thin compared to the first graphite foam layer. In this second graphite foam layer 350, 10 g of polyphenylcarbosilane having a molecular weight of 3,000 was dissolved in 50 g of a cyclohexane nucleic acid, and a polyphenylcarbosilane solution having a concentration of 16% by weight prepared by heating was polymerized and reacted at a reaction temperature of 300 to 350 ° C So that the durability of the insole 300 can be increased and the weight of the insole 300 can be reduced.

In addition, the second graphite foam layer 350 can be deformed into a sole three-dimensional shape of the seat plane shape in the form of a custom fit corresponding to the shape of the user's foot by the foam molding process, .

Between the bottom surface of the second graphite foam layer 350 and the top surface of the latex foam layer 340 or between the top surface of the second graphite foam layer 350 and the bottom surface of the wood impregnated sheet layer 360, A primer layer (not shown) capable of increasing the adhesive strength by smoothing the adhesion surface may be further intervened.

The wood-impregnated sheet layer 360 of the insole 300 is bonded to the upper surface of the second graphite foam layer 350. The wood-impregnated sheet layer 360 was prepared by passing a molten polyurethane resin between a wood sheet having a thickness of 0.3 mm and a nonwoven fabric having a thickness of 0.4 mm by passing through a heating roll, And is made by coating the outer surface of the wood-impregnated sheet layer 360. The natural and cool feeling of the wood can be provided to the user, and it can be an eco-friendly material resistant to moisture while realizing the texture of wood.

A graphene layer 370 is further formed on the upper surface of the wood impregnated sheet layer 360 of the insole 300.

The graphene layer 370 may be separately fabricated and then transferred and transferred to the upper surface of the wood-impregnated sheet layer 360, or may be synthesized on the upper surface of the wood-impregnated sheet layer 360 by chemical vapor deposition. The graphene layer 370 has a hydrophobic surface with respect to the uppermost top surface of the insole 300, so that the graphene layer 370 can prevent infiltration of moisture or foreign matter, or microbial and bacterial vegetation. Further, by allowing fine droplet droplets such as moisture to form on the upper surface of the graphene layer 370 in a droplet shape, moisture or the like can be easily separated from the surface of the insole 300 by an external force such as an external shock to the shoe or shaking of the shoe So that the insole 300 can be maintained in a comfortable state.

In addition, the graphene layer 370 can also protect the surface of the wood impregnated sheet layer 360, and can increase the corrosion resistance of the surface of the wood impregnated sheet layer 360 relatively.

Second Example

The shoe having the high elasticity midsole of the present invention described in this embodiment may be the same as or very similar to the first embodiment except that there is further heat dissipating means. Therefore, the same or corresponding components in FIGS. 1 to 6 will be given the same or similar reference numerals, and a description thereof will be omitted here.

FIG. 4 is an exploded perspective view of a shoe having a high elasticity midsole according to a second embodiment of the present invention, FIG. 5 is an enlarged sectional view of a line BB relating to the insole shown in FIG. 4, A first magnet, a heat sink, and a second magnet.

Referring to FIG. 4, the second embodiment of the present invention includes an outsole 100 corresponding to a bottom of a shoe.

The second embodiment includes a skin layer disposed on the outsole 100 and coupled with pulp and fabric and a first graphite foam layer laminated on the bottom surface of the skin layer, A midsole (200) having a relatively large compression density of a portion of the first graphite foam layer relative to other portions of the first graphite foam layer and a uniform midsole thickness throughout the entire midsole to prevent bending deformation between the bottom portions, .

5, the second embodiment includes a mesh protecting portion 310, an anionic ceramic ball 320, a polyurethane foam layer 330, a latex foam layer 340, a second graphite foam layer 350, A wood impregnated sheet layer 360 and a graphene layer 370 and an insole 300a provided with a heat dissipating means 600. [

The second embodiment also includes an upper part 400a which is connected to the outsole 100 and surrounds a user's foot and includes a heat radiating plate 630 of the heat radiating unit 600. [

The heat radiating plate 630 may be installed in a portion corresponding to the user's heel in the material of the upper part 400a.

In addition, the second embodiment may include the foreign matter prevention cap 500 mentioned above.

The insole 300a of the second embodiment is arranged in a zigzag manner along the plane extending direction of the insole 300a in the insole 300a and a heat transfer path is provided in the insole 300a to provide elastic force And a wire portion 610 for the means 600. The wire portion 610 may be fixed to the wire extension passage between the polyurethane foam layer 330 and the latex foam layer 340, as shown in FIG.

The insole 300a includes a first magnet 620 attached to an end of the wire portion 610 and configured to be exposed to the heel portion of the insole 300a.

The insole 300a includes a heat dissipating plate 630 for the heat dissipating means 600 disposed on the heel side of the upper 400a in the upper 400a and a heat dissipating plate 630 fixed to the heat dissipating plate 630, And a second magnet 640 for a pair of heat dissipating means 600 exposed to the side of the second magnet 640.

The insole 300a may be prefabricated in advance with the first magnet 620 and the wire portion 610 before being coupled with the upper 400a and may be easily mounted in the shoe There are advantages.

That is, when the insole 300a is inserted into the inner space of the upper 400a, that is, the inner space of the shoe, the first magnet 620 on the insole 300a is inserted into the second magnet 640 on the upper side 400a, The heat of the wire portion 610 can be transmitted to and discharged from the heat sink 630 via the first magnet 620 and the second magnet 640. [

That is, the heat inside the shoe is discharged through the heat dissipating means 600, so that occurrence of sweat at the user's foot area can be minimized.

6, the wire portion 610 of the heat dissipating means 600 may extend in the longitudinal direction of the wearer's foot to serve as an elastic core or an elastic spring. In particular, the toe- Since the wire portion 610 is extended in a direction to avoid the region Q, there is an advantage that the feeling of wearing comfort can be maximized.

The foregoing description is merely illustrative of the technical idea of the present invention and various changes and modifications may be made without departing from the essential characteristics of the present invention. Therefore, the embodiments described in the present invention are not intended to limit the scope of the present invention, but are intended to be illustrative, and the scope of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas which are equivalent or equivalent thereto should be interpreted as being included in the scope of the present invention.

100: Outsole 200: Midsole
300, 300a: Insole 310: Mesh protection part
320: Anion ceramic ball 330: Polyurethane foam layer
340: latex foam layer 350: second graphite foam layer
360: wood impregnated sheet layer 370: graphene layer
400, 400a: Upper 500: Foreign matter prevention cap
600: heat sink

Claims (3)

An outsole corresponding to the bottom of the shoe;
And a first graphite foam layer disposed on the bottom of the skin layer, wherein the first graphite foam layer is disposed on the outsole and is joined with the pulp and the fabric, and the first graphite foam layer stacked on the bottom surface of the skin layer, wherein a warping deformation between the heeled portion of the outsole and a bottom portion extending from the heel A midsole having a relatively large compression density of a portion of the first graphite foam layer relative to other portions of the first graphite foam layer and a uniform midsole thickness throughout the entire midsole;
An insole layered on top of the midsole and stacked from bottom to top in a mesh protection, an anionic ceramic ball, a polyurethane foam layer, a latex foam layer, a second graphite foam layer, a wood impregnated sheet layer and a graphene layer;
An upper which is connected to the outsole and encloses a user's feet; And
And a foreign matter prevention cap which is disposed between the shoelace and the string hole of the upper, and which blocks the gap around the bent portion of the shoelace through the string hole
Lt; RTI ID = 0.0 > a < / RTI > high elasticity midsole.
The method according to claim 1,
The foreign matter prevention cap
A hollow lower portion which is opened to one side and is fitted in the string hole so that the shoelace can pass in the lateral direction,
A stopping protrusion protruding from an outer circumferential surface of the hollow lower portion and extending along the outer circumferential surface to be caught below the rim of the string hole;
And a dome-shaped cover part integrally formed above the hollow lower part and having an upper part opened to allow the shoelace to pass in an upper direction,
Characterized in that the cover portion and the stopper portion are spaced apart from each other corresponding to the thickness of the string hole of the shoe
Lt; RTI ID = 0.0 > a < / RTI > high elasticity midsole.
The method according to claim 1,
Wherein the first graphite foam layer of the midsole comprises:
10 g of polyphenylcarbosilane having a molecular weight of 3,000 was dissolved in 50 g of a cyclohexane acid, and the polyphenylcarbosilane solution having a concentration of 16% by weight was heated and polymerized and passed between heating rolls at a reaction temperature of 300 to 350 ° C to obtain a thickness Made in 1mm sheet form
Lt; RTI ID = 0.0 > a < / RTI > high elasticity midsole.

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