KR101779109B1 - Midsole for Shoes Containing Air Chamber in Outsole and Shoes Containing the Same - Google Patents

Abstract

The present invention relates to a footwear midsole having an air chamber on an outsole and a footwear having the footwear. In order to provide a ventilation function and an air cushion function, A first paperboard layer 200, a second paperboard layer 300, a reinforced nylon layer 400, a synthetic rubber layer 500 and a surface layer 600 composed of microfiber cloth or leather The present invention relates to a midsole for a footwear having an outsole and an air chamber having excellent walking comfort and durability, and a footwear having the same.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a midsole for a footwear having an air chamber on an outsole,

The present invention relates to a midsole for a footwear having an air chamber on an outsole and a footwear having the same, and more particularly, to a footwear having an air chamber on the outsole for providing a ventilation function and an air cushion function, The present invention relates to a midsole for a footwear having an air chamber on an outsole and a footwear having the same, which can provide an optimal walking comfort and durability while solving the downward tear or tear of the midsole.

In general, the foot motion to the ground during walking is largely a three-step process in which the left and right feet repeatedly repeat the landing step by the heel, the center shift step from the heel to the forearm, and the step of pushing away the forefoot. In this process, since the foot plays a role of absorbing the center holding and the impact of the weight, the importance of the shoe that can complement the center holding and the shock absorbing function is emerging, and the research is actively progressing.

On the other hand, with regard to shock absorption, assuming that a person walking at an average walking weight of about 60 kg weighs about 6000 feet per day, a load of about 432 tons is required for the foot, which is a load , The amount of the impact applied to the foot in walking or running is larger than expected. Therefore, if such an amount of impact can not be reduced, a regressive change in the joints can not be avoided.

In order to solve the above problems, Korean Utility Model No. 20-0176002 discloses a shock absorbing shoe in which a spring is mounted on a midsole portion of a shoe to absorb a shock. However, shoes such as those described above must be manufactured by injection molding using the upper mold, the lower mold, and the through-holes for inserting the spring, and then the upper mold pad, the lower mold, and the spring storing through holes should be manufactured by high frequency bonding or bond bonding There is a problem that production cost and maintenance cost are increased due to the complexity of the production process and its structure.

Korean Patent Laid-Open Publication No. 2003-0072277 discloses a shoe shock absorbing damping device for reducing impact by attaching a coil spring to a midsole of a shoe. The shoe as described above has problems in that the coil spring escapes from the flange when the coil spring is compressed or expanded, or the spring itself is broken, and in addition, there is a problem in that the shoe has a separate storage room And the midsole having a separate storage chamber must be manufactured by a high-frequency bonding method or a bond-bonding method since a shock absorber must be separately installed after manufacturing the midsole. Therefore, the production process and its structure are complicated, There is a problem that this increases.

In order to solve the above problems, the present inventors have proposed a ventilation shoe so as to maintain a stable walking motion in the course of the operation of the air cushion function by implementing a support base formed with ventilation holes in the outsole frame in Korean Patent No. 10-1567481 There is a bar.

However, when shoes are made using normal midsole while installing an air chamber on a shoe outsole to give the shoe a ventilation function or an air cushion function, when the shoe is worn for a certain period of time, the midsole There is a demand for a midsole (midsole) capable of providing optimal walking comfort while preventing tears from appearing.

In order to provide a ventilation function or an air cushion function, the inventors of the present invention have developed a base layer 100 composed of a pressboard, a first paperboard layer 200, a second paperboard layer 300 (1) composed of a reinforced nylon layer (400), a synthetic rubber layer (500) and a surface layer (600) composed of a microfiber cloth or leather is used, the midsole is sagged or torn and the bottom pressure distribution The present invention has been accomplished by confirming that it is possible to solve the problem that the foot stiffness is damaged due to the occurrence of unevenness or pressure increase due to the increase of pressure, and that the optimal walking comfort and durability are excellent.

An object of the present invention is to provide a footwear having an air chamber on an outsole for imparting a ventilation function or an air cushion function to a shoe, such as lowering or tearing of the midsole, The present invention is to provide a midsole for a footwear having an air chamber in an outsole and a footwear having the same, which solves the problem of deterioration in walking stability.

Another object of the present invention is to provide a midsole for a footwear having an air chamber in an outsole and a footwear having the same, which can ensure optimal walking comfort and durability.

(B) a first paperboard layer (200) formed on the base layer (100); (C) a second paperboard layer 300 formed on the first paperboard layer 200; (D) a reinforced nylon layer 400 formed on the second paperboard layer 300; (E) a synthetic rubber layer 500 formed on the toughened nylon layer 400; And (F) a surface layer 600 formed on the synthetic rubber layer 500 and composed of microfiber cloth or leather.

The present invention also relates to a method for producing a laminate comprising the steps of disposing a press board, a first paper board, a second paper board, a reinforced nylon, a synthetic rubber, a microfiber cloth or a leather stream in this order from below and inserting a hot melt film And then an air chamber is provided on the outsole for heating and fusion bonding.

The present invention also provides a footwear comprising an outsole, a midsole and an upper member, wherein the outsole is formed with a support base having a predetermined height and width along the rim of the lower surface and having an air circulation passage formed therein and protruding downward, (A) a base layer (100) composed of a pressboard; and a base layer (100) formed of a pressboard, wherein the air chamber (B) a first paperboard layer (200) formed on the base layer; (C) a second paperboard layer 300 formed on the first paperboard layer 200; (D) a reinforced nylon layer 400 formed on the second paperboard layer 300; (E) a synthetic rubber layer 500 formed on the toughened nylon layer 400; And (F) a surface layer 600 formed on the synthetic rubber layer 500 and composed of microfiber cloth or leather.

The footwear midsole having the air chamber in the outsole according to the present invention and the footwear having the footwear have a problem that the midsole is sagged or torn in the foot having the air chamber in the outsole for imparting the ventilation function or the air cushion function It is possible to maintain optimum walking comfort and durability at the same time.

In addition, there is an effect of increasing the merchantability of the shoe by eliminating the problem of unbalance of the bottom surface pressure distribution and generation of the foot due to the increase of pressure, and the problem of compromising the walking stability.

1 is a cross-sectional view showing the structure of a midsole composite (1) for footwear having an air chamber on an outsole according to an embodiment of the present invention.
FIG. 2 is a photograph of a front portion of a midsole composite 1 for shoes having an air chamber on an outsole according to an embodiment of the present invention.
3 is a photograph taken from the side of a midsole composite 1 for shoes having an air chamber on an outsole according to an embodiment of the present invention.
4 is a photograph taken on the upper surface of a midsole composite 1 for shoes having an air chamber on an outsole according to an embodiment of the present invention.
5 is a photograph taken from the side of a midsole composite (1) for footwear having an air chamber on an outsole according to an embodiment of the present invention.
FIG. 6 is a photograph of a rear portion of a footwear midsole composite 1 having an air chamber on an outsole according to an embodiment of the present invention.
7 is a side view of a shoe having an air chamber on an outsole according to an embodiment of the present invention.
8 is a bottom view of Fig.
9 is a sectional view taken along line AA in Fig.
Figs. 10A and 10B are views for explaining the ventilation action of the air chamber shown in Fig. 7. Fig.
11A and 11B are bottom views of shoes according to another embodiment of the present invention.
12 is a perspective view showing another embodiment of the midsole shown in Fig.
13A to 13C are views showing various embodiments of the air chamber shown in Fig.

In the present invention, in order to provide a ventilation function and an air cushion function, a base layer 100, a first paperboard layer 200, a second paperboard layer 300, When the midsole composite 1 composed of the reinforced nylon layer 400, the synthetic rubber layer 500 and the surface layer 600 composed of microfiber cloth or leather is used, it is possible to solve the phenomenon in which the midsole is sagged or torn, Convenience, and durability.

Accordingly, the present invention provides in one aspect (A) a base layer 100 composed of a pressboard: (B) a first paperboard layer 200 formed on the base layer; (C) a second paperboard layer 300 formed on the first paperboard layer 200; (D) a reinforced nylon layer 400 formed on the second paperboard layer 300; (E) a synthetic rubber layer 500 formed on the toughened nylon layer 400; And (F) a surface layer 600 formed on the synthetic rubber layer 500 and composed of microfiber cloth or leather.

The footwear midsole composite (1) having an air chamber on the outsole according to the present invention can be fabricated by combining a composite material having different characteristics to satisfy both the walking function, the convenience, and the durability.

Hereinafter, a footwear midsole composite 1 having an air chamber on an outsole having the above features is shown in FIG. 1 and will be described in more detail with reference to the drawings.

(A) By pressboard  Configured Base layer (100)

The base layer 100 composed of the pressboard of the shoes-based midsole composite 1 having an air chamber on the outsole is used as a stiffener on the back of the midsole and serves to prevent deformation of the shoe and keep the center of the foot. It comprises 65 to 75% by weight of cotton and 25 to 35% by weight of polypropylene (PP), preferably 70% cotton and 30% polypropylene at a high temperature of 150 to 180 DEG C And tensile strength (1.3 kg / mm ² , KSM6882) and tear strength (1.8 kg / mm, KSM6882), which can be manufactured by fusing and pressing at a pressing load of 180 to 190 tons for 7 to 9 minutes.

(B) First Paperboard layer (200)

The first paperboard layer 200 formed on the base layer of the footwear-based midsole composite 1 having the air chamber in the outsole allows the shape of the footwear to be maintained, breathability, sweat absorption, and bending during walking. (Texon) containing 65 to 75% by weight of cotton and 25 to 35% by weight of polypropylene (PP), preferably 70% cotton and 30% polypropylene at a high temperature of 170 to 190 & (48% (satra tm ³ ), KSM6882) and excellent flexing resistance (20000 cycles). The air permeability and the absorbency (48% (satra tm ³ ), KSM6882) are good.

(C) Second Paperboard layer (300)

The second paperboard layer 300 formed on the first paperboard layer 200 of the shoes-based midsole composite 1 having the air chamber in the outsole is a midsole reinforcement material and prevents the midsole from falling down due to a high- . Texon having a high strength of 50 to 60% by weight and 40 to 50% by weight of polypropylene (PP), preferably 60% of cotton and 40% of polypropylene are heated at a high temperature of 150 to 250 ° C, may be prepared by fusing and pressing in the pressing load of 350ton, the tensile strength ^{(1.8kg / mm 2, KSM6882)} , tear strength (2.1kg / mm ^2, KSM6882) and burst strength (2.7kg / mm ^2, KSM6882) There are excellent features. Increase the content of polypropylene to 40% by weight and melt and press for 15 minutes at a higher temperature (200 ° C) than a normal Texon (200 ° C) and a high pressure load (300 ton). A tensile strength of 1.3kg / mm ² at 1.8kg / mm ² in (KSM6882), tear strength is 1.8kg / mm ² in at 2.1kg / mm ² and the rupture strength of 1.6kg / mm ² at 2.7kg / mm ² Respectively.

(D) a reinforced nylon layer 400,

The reinforced nylon layer 400 formed on the second paperboard layer 300 of the footwear midsole composite 1 having the air chamber in the outsole is used as a midsole reinforcement material, This prevents the growth of the Toughened nylon is the reinforcing material used in the midsole with the most increased strength. It has excellent tensile strength and tear strength, and excellent bending resistance (20000 cycle).

(E) Synthetic rubber layer (500)

The synthetic rubber layer 500 formed on the toughened nylon layer 400 of the shoes-based midsole composite material 1 having the air chamber on the outsole is used as a shock absorber, Function. As synthetic rubber, neoprene can be used. Neoprene is a trade name of chloroprene rubber or a synthetic rubber obtained by polymerizing a small amount of other units. It is also called CR sponge. The production can be obtained by adding hydrochloric acid to vinyl acetylene obtained by polymerizing two molecules of acetylene to obtain chloroprene and emulsifying it at 5 占 폚 or 40 占 폚. It has excellent heat resistance, cold resistance and chemical resistance, excellent elasticity and resilience, and soft touch.

(F) Microfiber cloth  or Leather  The surface layer (600)

The surface layer 600 formed on the synthetic rubber layer 500 and composed of microfiber cloth or leather is used as an insole on the front of the shoe. The sweat absorbing, non-slip, It plays a role. Microfiber cloth is a blend of polyurethane (PU) and nylon. It keeps the comfort inside the shoe by absorbing sweat and diverging. It has a feature of brushed surface to prevent soft touch and slippery.

As a preferred embodiment of the present invention, in order to further enhance the function of preventing the midsole from being stretched under a heavy load in consideration of weight, jump operation, and the like, It is possible to produce a midsole composite (1) for shoes having an air chamber on an outsole having a seven-layer structure further including a reinforced nylon layer.

2 to 5, a vent hole 136 is formed in a midsole formed by a hexagonal structure. A photograph of the rear portion of the footwear midsole composite 1 having the air chamber on the outsole according to the embodiment of the present invention is shown in Fig.

Conventionally, in the case of manufacturing a composite by combining different materials, the bonding process is performed by using an adhesive. However, the present invention can be applied to a manufacturing process of a composite material by combining the materials of the midsole fabric Texon and the high- A method for manufacturing a midsole composite (1) for shoes having an air chamber on the outsole of a bath is provided.

Therefore, the present invention is, from another viewpoint, arranged in the order of a press board, a first paper board, a second paper board, a reinforced nylon, a synthetic rubber, a microfiber cloth or a leather stream from the bottom and hot melt The present invention relates to a method for manufacturing a shoe sole for a shoe sole, and a shoe sole.

In the production method of the present invention, fusion bonding can be carried out at a temperature of 160 to 200 DEG C and a pressing load of 250 to 350 tons.

The pressboard and the first paperboard may be composed of 65 to 75% by weight of cotton and 25 to 35% by weight of polypropylene, and the second paperboard may be composed of 50 to 60% by weight and 40 to 50% by weight of polypropylene have.

According to another aspect of the present invention, there is provided a footwear comprising an outsole, a midsole, and an upper member, wherein the outsole is formed with a support base having a predetermined height and width along an edge of a lower surface and an air circulation passage formed therein, And an air chamber is formed on the inside of the support so as to protrude below the support, and the air is sucked into or discharged from the air chamber by communicating with the air circulation passage of the support. The midsole comprises: (A) 100): (B) a first paperboard layer 200 formed on the base layer; (C) a second paperboard layer 300 formed on the first paperboard layer 200; (D) a reinforced nylon layer 400 formed on the second paperboard layer 300; (E) a synthetic rubber layer 500 formed on the toughened nylon layer 400; And (F) a surface layer 600 formed on the synthetic rubber layer 500 and composed of microfiber cloth or leather.

FIG. 7 is a side view of a shoe according to an embodiment of the present invention, FIG. 8 is a bottom view of FIG. 7, and FIG. 9 is a sectional view taken along line A-A of FIG.

As shown in the figure, the shoe 2 according to the embodiment of the present invention includes an upper member 110, an outsole 130, and a midsole 1.

The outsole 130 is generally made of a rubber material having elasticity and can be repeatedly contracted and restored by the suction and discharge of air due to the difference in pressure applied to the air chamber 134 due to a walking operation It is acceptable if the material is elastic.

The midsole 1, which is joined to the outsole 130, is preferably made of a material capable of supporting a large load while providing ease of gait. The midsole 1 may be made of a waterproof material, Allow moisture to be blocked.

A support base 132 having a predetermined height and width along the rim of the lower surface of the outsole 130 is formed to protrude downwardly from a bottom surface of the support base 132. A groove is formed in the support base 132 to define an air circulation passage 133 .

An air chamber 134 is formed on the outsole 130 inside the supporter 132 so as to protrude below the supporter 132.

At this time, one or more of the air chamber 134 may be formed in the whole or part of the outsole 130 according to the use of the shoe. In the air chamber 134, a passage through which air can be sucked and discharged is formed, And communicates with the air circulation passage 133 inside the support base 132.

The air chamber 134 formed in the outsole 130 may be formed in various shapes such as round, oval, trapezoid, triangle, and various pillars. The air chamber 134 may be formed in a conventional flat outsole, 134 may be formed.

Here, the bottom surface of the outsole 130 having the air chamber 134 may be provided with various types of protrusions and protrusions as shown in FIGS. 13A to 13C to prevent slipping or the like.

The air chamber 132 of the outsole 130, the air circulation passage 133 in the support base 132, and the upper half of the midsole 1, the upper 110, A number of ventilation holes 136 are formed so that air in the chamber 134 can be sucked and discharged.

At this time, the degree and speed of shrinkage and restoration of the air chamber 134 can be controlled by adjusting the number and size of the vent holes 136, thereby providing a cushion role of the outsole 130 suitable for the use of the shoe .

In addition, an extra area required for sewing and sewing can be disposed on the edge of the outsole 130, and the outsole 130 and the midsole 1 can be sealed with the seaming line 122 to provide a more stable air cushion function.

Due to such a configuration of the ventilation shoe 2, air is sucked and discharged into the air chamber 134 due to the difference in pressure applied to the air chamber 134 of the outsole 130 at the time of walking, Is smoothly shrunk and restored to provide a comfortable air cushion function to the outsole 130 according to the gait operation, thereby providing a comfortable grip.

10A and 10B, the air in the air chamber 134 is discharged to the vent hole 136 when the ventilation shoe 2 is pressed on the ground during the gait operation, and when the ventilation shoe is completely pressed The air is sucked through the vent hole 136 and the outsole air chamber 134 is filled with air.

At this time, the support member 132 helps to maintain the stability of the walking in the shrinking and restoring process of the air chamber 134 and smoothly induces the suction and exhaust of the air in the air chamber 134 in the walking of the slope such as climbing, Supports walking.

Therefore, in the case of general shoes other than sports shoes or outdoor shoes, the grounding area is widened naturally in the shrinking and restoring process of the air chamber 134 provided by the flow of air, that is, the suction and discharge of air, Only the air chamber 134 may be formed without forming the support bar as in FIG. 11A, or several support bars 132 may be protruded from only a part of the outer frame 130 as shown in FIG. 11A.

In addition to the function of supporting the stability of the walking, the support base 132 is provided with an air circulation passage 133 communicating with the air chamber 134 in the form of a groove in the support base, to provide.

12 is a perspective view showing another embodiment of the midsole shown in Fig.

As shown in FIG. 12, a prosthesis having a heel-shaped air passage 124 is provided in the midsole 1 at the rear of the shoe so as to communicate with the air circulation passage 133 inside the support table 132.

At this time, a plurality of small holes may be formed in the upper part 110 of the shoe, or the upper part 110 may be formed of a mesh-like material.

Therefore, air can flow naturally to protect the heel from external impact, as well as to prevent moisture and dust from entering the outside.

Hereinafter, the present invention will be described in more detail with reference to Examples. It is to be understood by those skilled in the art that these examples are for illustrative purposes only and that the scope of the present invention is not construed as being limited by these examples.

[Example]

Manufacturing example  One: Of the pressboard  Produce

70% by weight of cotton and 30% by weight of polypropylene were fused and pressed at 175 DEG C and 180 ton pressure for 8 minutes to prepare a press board.

The press load is expressed as ton on the touch panel and can be converted into a pressure unit using the following equation.

[Equation 1]

P = (B x 1000 kg) / A [kg / cm ² ]

Here, A is the area (cm ² ) of the pressing surface of the press, and B is the pressing force (ton).

Manufacturing example  2: Texon (paperboard)  Produce

70% by weight of cotton and 30% by weight of polypropylene were fused and pressed for 5 minutes at a temperature of 181 DEG C and a pressing load of 160 tons to prepare Texons.

Manufacturing example  3: High strength Texon (paperboard)  Produce

60% by weight of cotton and 40% by weight of polypropylene were fused and pressed for 15 minutes at a temperature of 200 DEG C and a pressing load of 300 tons to prepare a high strength Texon.

Example  One: On the outsole Air chamber  For shoes Midsole  Manufacture of Composites

In the Production Examples 1 to 3, press boards, Texons, high strength Texons, toughened nylons, neoprene, and microfine fabrics were arranged in order from bottom to bottom, hot melt films were inserted between the fabric layers, And a pressure load of 300 ton to prepare an air-tight seamed midsole composite (1).

The shoes-like midsole composite (1) having an air chamber on the outsole manufactured as described above has a problem in that each material constituting the layer structure satisfies the required properties, so that the midsole Tearing phenomenon can be solved, and optimum walking ease and durability can be provided.

While the present invention has been particularly shown and described with reference to specific embodiments thereof, those skilled in the art will appreciate that such specific embodiments are merely preferred embodiments and that the scope of the present invention is not limited thereby. something to do. It is therefore intended that the scope of the invention be defined by the claims appended hereto and their equivalents.

1: Midsole composite 2: Shoes
100: base layer 200: first paperboard layer
300: second paperboard layer 400: reinforced nylon layer
500: Synthetic rubber layer 600: Surface layer
110: upper 122: seam
124: Air circulation path 130: Outsole
132: support member 133: air circulation passage
134: air chamber 136: ventilation hole

Claims (13)

delete delete delete delete delete delete delete For footwear consisting of outsole, midsole and upper;
The outsole is formed with a support base having a predetermined height and width along the rim of the lower surface and having an air circulation passage formed therein,
An air chamber is formed on the inside of the support so as to protrude below the support, so that the air is sucked into or discharged from the air chamber by communicating with the air circulation passage of the support,
(B) a base layer (100) composed of a pressboard comprising (A) 65 to 75% by weight of cotton and 25 to 35% by weight of polypropylene; (B) A first paperboard layer (200) comprising 25 to 35% by weight of a polypropylene; (C) a second paperboard layer 300 formed on the first paperboard layer 200, the second paperboard layer 300 comprising 50 to 60% by weight of cotton and 40 to 50% by weight of polypropylene; (D) a reinforced nylon layer 400 formed on the second paperboard layer 300; (E) a synthetic rubber layer 500 formed on the toughened nylon layer 400 and formed of chloroprene rubber; And (F) a surface layer (600) formed on the synthetic rubber layer (500) and composed of a blend microfiber cloth or leather of polyurethane and nylon.
The air conditioner according to claim 8, wherein one or more of the air chambers are formed on the whole or part of the outsole, and a plurality of the support rods are formed on the entire outsole rim or a part of the outsole rim is formed separately. One shoe.
The outsole according to claim 8, wherein the ventilation holes of the air sucked and discharged into the air chamber are independently formed in one of a midsole or an upper part joined to the outsole, the support, and the outsole, Shoes having an air chamber.
The footwear according to claim 8, wherein an extra area necessary for sewing and sewing is disposed on the outsole frame, and the outsole and the midsole are sewn together with a sealing line.
The footwear according to claim 8, wherein the bottom surface of the outsole on which the air chamber is formed is provided with concave and convex portions.
[9] The apparatus according to claim 8, wherein the foot is provided with a heel-shaped air passage on the back of the shoe so as to communicate with the air circulation passage, and a small hole is formed in the upper part of the shoe, Footwear with an air chamber on the outsole.

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