KR101638404B1 - Non slip insole for sports - Google Patents

Non slip insole for sports Download PDF

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Publication number
KR101638404B1
KR101638404B1 KR1020160041669A KR20160041669A KR101638404B1 KR 101638404 B1 KR101638404 B1 KR 101638404B1 KR 1020160041669 A KR1020160041669 A KR 1020160041669A KR 20160041669 A KR20160041669 A KR 20160041669A KR 101638404 B1 KR101638404 B1 KR 101638404B1
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KR
South Korea
Prior art keywords
slip
sheet
insole
sports
foam layer
Prior art date
Application number
KR1020160041669A
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Korean (ko)
Inventor
김태효
장창오
Original Assignee
김태효
장창오
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Application filed by 김태효, 장창오 filed Critical 김태효
Priority to KR1020160041669A priority Critical patent/KR101638404B1/en
Application granted granted Critical
Publication of KR101638404B1 publication Critical patent/KR101638404B1/en
Priority to PCT/KR2017/003171 priority patent/WO2017175995A1/en

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    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B17/00—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B17/00—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined
    • A43B17/003—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined characterised by the material
    • A43B17/006—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined characterised by the material multilayered
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B17/00—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined
    • A43B17/14—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined made of sponge, rubber, or plastic materials
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B23/00—Uppers; Boot legs; Stiffeners; Other single parts of footwear
    • A43B23/26—Tongues for shoes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/065—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of foam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/30—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer formed with recesses or projections, e.g. hollows, grooves, protuberances, ribs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/245—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it being a foam layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2266/00—Composition of foam
    • B32B2266/02—Organic
    • B32B2266/0214—Materials belonging to B32B27/00
    • B32B2266/0278—Polyurethane
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/726—Permeability to liquids, absorption
    • B32B2307/7265—Non-permeable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/744—Non-slip, anti-slip
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2437/00—Clothing
    • B32B2437/02—Gloves, shoes

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  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)

Abstract

The present invention relates to non-slip insole for sports.
A sports non-slip insole according to the present invention is characterized in that a plurality of upper cells 11 having a diameter of 10 to 100 μm are formed on the surface of the insole, A plurality of lower cells 12 having a diameter larger than that of the upper cell 11 and having a longer columnar shape and having a lower diameter than that of the upper cell 11 are formed and the upper cell 11 and the lower cell 12 are not formed The upper surface of the wet urethane sheet 10a having micropores 13 smaller than the diameter of the upper cell 11 is removed so that the upper cell 11 is exposed and the upper surface has a diameter of 10 to 100 A non-slip sheet 10 on which non-slip grooves 14 are formed; A porous urethane foam layer 20 integrally bonded to the non-slip sheet 10 at a lower portion of the non-slip sheet 10; And a lower sheet 30 formed integrally with the urethane foam layer 20 and made of a non-breathable material at a lower portion of the urethane foam layer 20. The non-slip sheet 10 and the urethane foam layer 20 The auxiliary supporting layer 40 is formed of a nonwoven fabric or a mesh cloth.
According to the present invention, a professional athlete (pro sports athlete) having a long walking distance such as a movement, a marathon, an alarm, etc. in which a safe landing is important, such as a fencing, Taekwondo, Can help prevent injuries while fully exercising.

Description

{Non slip insole for sports}

The present invention relates to an insole, and more particularly, to a sports athlete's insole for a professional athlete, which enables a professional athlete who performs a heavy walking exercise such as a soccer or a marathon to prevent injuries, .

The existing insole is a composition of shoes with outsole and middle soles of shoes such as shoes or sneakers. It gives a feeling of padding and moderate shock absorption without giving a feeling of hardness and foreign body when touching the foot, Element.

In particular, shoes are basically the outside of the outer shell and outsole, inside the middle sole plays a pivotal role and the insole has played an auxiliary role.

Recently, a number of functional insoles such as antimicrobial function, shock absorbing function, less odor function, ventilating function, and posture function have been developed in recent years and sold as insoles alone.

If you look at all the insoles, such as the existing insoles, the insoles that are put on the shoes, and the insoles that are sold by the insoles alone, there is no problem to use in general life.

It is sure to be a good evolved good insole that does not have a great inconvenience in using it for its intended purpose by providing comfort with its optimal configuration that has evolved sufficiently for a long time.

However, in the case of extreme sports such as long-distance hiking more than 8 hours, intense competition of professional soccer players, marathon more than half course, long repeated practice and competition of professional players, and strong movement of enthusiasts, Even though the soles and insole are fulfilling their roles, the athletes are tired after a game or exercise after their knee or ankle is sick or consumed a lot of physical strength, and it takes much time to recover.

This phenomenon is inevitable because it is caused by a very intense exercise that goes beyond the role that shoe has to play.

Also, in the Olympic games, the athletes are trying hard to shorten the record even 0.1 second.

For example, in order to shorten the records of the speed skating of the PyeongChang Winter Olympic Games, we are investing a lot of money by using scientific analysis and using overseas advanced technology to reduce air resistance of the uniforms worn by athletes.

Generally, the insole is not made in a non-slip form so that the sock is not peeled off when the user takes off or wears the shoe.

If the upper surface of the insole is made in a non-slip form, the sock is likely to peel off or the shoe is difficult to wear due to friction between the sock and the insole.

In recent years, however, there has been a tendency to introduce appropriate insole for various purposes in the insole, and thus, the "insole of the front footwear with close contact with the foot" (Korean Patent Registration No. 10-1301690, Patent Document 1) ) Have begun to be introduced.

In Patent Document 1, the contact portion with the sole is formed by perforating the insole material made of hard material, and a soft sole is attached to the upper side of the sole sole so that the bent portion of the sole of the sole is lowered by the perforated sole, The smooth surface of the curved surface is gentle so that the walking resistance can be made comfortable by the slip resistance in the perforated part when walking.

The patent document 1 has a purpose of changing the insole structure on a flat surface so that the insole structure can be brought into close contact with the sole during a general gait, thereby making the gait comfortable.

As another technique, "fitting insole according to foot shape and kinetic characteristic of each individual and method for manufacturing the same" (Korean Patent Registration No. 10-0470905, Patent Document 2) discloses a method of forming a woven layer So as to perform the anti-slip function.

However, in the case of the woven material layer, there is a limit to the formation of the unevenness per unit area due to the inclination of the woven fabric and the arrangement of the weft, and when the sweat or water flows in between the insole and the sock, So that the phenomenon that the sliding is accelerated rather can be caused.

In this case, it may not feel special inconvenience for a user such as a general pedestrian, but it causes a great inconvenience to a professional athlete who performs a violent walking exercise (marathon, soccer, etc.) and raises the risk of injury.

However, the specific environment of the upper surface of the insole, that is, the contact with the sock, and the sweat of the user through the sock, are permeated It is not suitable for professional athletes because of the water film phenomenon.

The inventors of the present application have come to appreciate the essential conditions required for sport insoles for professional athletes over a long period of time.

Specifically, the function of the shock absorbing and bow protecting function, the function of the insole, and the function of preventing the loss of the power and maximizing the force can be performed, and the thickness thereof should be as thin as possible.

The thicker the thickness, the more unstable the posture and the farther away the ground, the less agility and accuracy of motion.

The thinnest possible thickness should not give the greatest hindrance to exercise.

The surface of the insole that touches the foot should not slip.

It is necessary to prevent the instability caused by the slip and the loss of power due to the slip, and the shoes and the socks, ie, the feet, must move in unison as one body.

It should also have sufficient shock absorption even in thin thickness. In addition, you should reduce the energy loss to the shock absorbing and reduce it as much as possible to save power and improve the record.

Finally, even if you sweat a lot or come in contact with water in the rain, the water will cause the insole to become heavy or you should not lose the inherent function of the insole described above.

KR 10-1301690 (2013.08.23) KR 10-0470905 (January 31, 2006)

The non-slip soles for sports according to the present invention solve the problems caused by the conventional techniques as described above and satisfy the functions required for the sports soles investigated by the inventors of the present application, And to prevent menstrual phenomenon from occurring even when moisture from the pedestrian socks comes into contact with the surface, thereby preventing a professional athlete from injuring and doubling their athletic performance.

More specifically, it is intended to perform functions such as shock absorption and athletic protection, which are basic functions of the insoles, and prevention of loss of power and functions capable of maximizing the force.

In addition, the thickness of the insole is made thin to improve the posture stability of the wearer and the agility and accuracy of the operation, and it is desired that the shock absorption is favorable, the energy loss is reduced, and the power saving and the recording improvement are assisted.

In addition, it is intended to maintain the above function without increasing the weight of the insole even when the wearer is exposed to moisture due to sweat or rain.

Specifically, a non-slip sheet providing non-slip performance, a waterproof bottom sheet and a urethane foam layer between the non-slip sheet and the bottom sheet are provided, and the non-slip sheet, the bottom sheet and the urethane foam layer are integrally formed In particular, the non-slip sheet is made of a urethane sheet of a wet production method. By removing the surface skin layer, numerous irregularities are formed on the upper surface, thereby forming a large number of irregularities per unit area, I want to.

Further, an auxiliary support layer made of a nonwoven fabric or a mesh is formed on the bottom surface of the non-slip sheet, so that the separation of the non-slip sheet and the urethane foam layer can not be achieved even when the load is concentrated or converted.

In addition, since the non-slip sheet has a structure in which a plurality of cells are formed therein, the sweat of the pedestrian can be absorbed into the inside, thereby suppressing the occurrence of the water film phenomenon.

In addition, since the water-repellent coating layer formed of the discontinuous coating film is formed on the bottom surface of the non-slip sheet, the gas generated during the foaming process during the formation of the intermediate polyurethane foam layer can be smoothly discharged so that the urethane liquid phase permeates into the pores and cells inside the non- Thereby minimizing the problem of gas discharge failure due to the foaming of the urethane foam, and satisfying required performance such as non-slip and water film prevention.

In order to solve the above problems, a sports non-slip solver according to the present invention is characterized in that a plurality of upper cells 11 having a diameter of 10 to 100 μm are formed on the surface of the insole, A plurality of lower cells 12 having a diameter larger than that of the cell 11 and having a vertically long columnar shape and a lower diameter than that of the upper portion are formed and a portion where the upper cell 11 and the lower cell 12 are not formed The upper surface of the wet urethane sheet 10a on which the fine pores 13 having a diameter smaller than the diameter of the upper cell 11 is formed is removed to expose the upper cell 11, A non-slip sheet 10 on which non-slip grooves 14 are formed; A porous urethane foam layer 20 integrally bonded to the non-slip sheet 10 at a lower portion of the non-slip sheet 10; And a lower sheet 30 formed integrally with the urethane foam layer 20 and made of a non-breathable material at a lower portion of the urethane foam layer 20. The non-slip sheet 10 and the urethane foam layer 20 The auxiliary supporting layer 40 is formed of a nonwoven fabric or a mesh cloth.

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A water repellent coating layer 15 coated with a discontinuous coating film is formed on the bottom surface of the non-stretch sheet 10.

The upper surface of the non-slip sheet 10 is provided with an upper unevenness 50 of a predetermined pattern.

In addition, the lower sheet 30 is characterized in that the thermoplastic polyurethane resin is formed of an extruded film extruded.

In addition, the non-slip sheet 10 has a thickness of 0.2 to 0.8 mm, the lower sheet 30 has a thickness of 0.03 to 0.1 mm, and the urethane foam layer 20 has a front portion corresponding to a user's toe position 1.1 to 2.77 mm, an intermediate portion corresponding to the user's forefoot position of 2.1 to 3.77 mm, and a rear portion corresponding to the user's heel having a thickness of 2.6 to 5.27 mm.

The surface hardness measured on the upper surface of the non-slip sheet 10 is 45 to 65 on a Shore C hardness meter, and the surface hardness measured on the lower surface of the lower sheet 10 is 30 to 50 on a Shore C hardness meter.

In addition, the lower sheet 30 is formed such that the periphery thereof is bent upwardly so as to surround the urethane foam layer 20.

The urethane foam layer 20 has a density of 0.2 to 0.45 g / ㎣ and a core hardness of 30 to 45 on a Shore C hardness meter.

In addition, the non-slip sheet 10 is fabricated by removing the fabric from a wet urethane sheet coated on the release treated fabric.

According to the present invention, it is possible to satisfy the high non-slip function which is not required for general insole, and to prevent the water film phenomenon from occurring even when the moisture from the pedestrian sock comes into contact with the surface, The exercise capacity can be doubled.

More specifically, it is possible to perform functions such as shock absorption and bow protection, which are basic functions of the solenoid, prevention of loss of force, and functions capable of maximizing the force.

In addition, since the thickness of the insole is made thin, the attitude of the wearer can be stabilized and the agility and accuracy of the operation can be improved, shock absorption is favorable, energy loss is reduced, and power saving and recording improvement can be assisted.

In addition, the above function can be maintained without increasing the weight of the insole even when the wearer is exposed to moisture due to sweat or rain.

Specifically, a non-slip sheet providing non-slip performance, a waterproof bottom sheet and a urethane foam layer between the non-slip sheet and the bottom sheet are provided, and the non-slip sheet, the bottom sheet and the urethane foam layer are integrally formed In particular, the non-slip sheet is made of a urethane sheet of a wet production method. Since the surface skin layer is removed, numerous irregularities are formed on the upper surface, thereby forming a large number of irregularities per unit area, do.

Further, an auxiliary support layer made of a nonwoven fabric or mesh is formed on the bottom surface of the non-slip sheet, so that the separation of the non-slip sheet and the urethane foam layer can not be achieved even when the load is concentrated or converted.

Further, since the non-slip sheet has a structure in which a plurality of cells are formed therein, the sweat of the pedestrian can be absorbed into the inside, thereby suppressing the occurrence of the water film phenomenon.

In addition, since the water-repellent coating layer formed of the discontinuous coating film is formed on the bottom surface of the non-slip sheet, the gas generated during the foaming process during the formation of the intermediate polyurethane foam layer can be smoothly discharged so that the urethane liquid phase permeates into the pores and cells inside the non- It is possible to minimize the problem of gas discharge failure due to the foaming of the urethane foam and satisfy the required performance such as non-slip, water film prevention, and the like.

According to the above performance, professional athletes (such as fencing, taekwondo, etc.) having a long walking distance such as a sensitive and agile exercise such as soccer, volleyball, basketball, ) Will be able to help prevent injuries while fully exercising.

1 is a photograph showing the surface of a wet urethane sheet in the present invention.
2 is a microscope photograph showing the cross-sectional structure of the wet urethane sheet in the present invention.
3 is a photograph showing a surface on which the upper surface of the wet urethane sheet is removed in the present invention.
4 is a microscope photograph showing the cross-sectional structure of a non-slip sheet in the present invention.
5 is a process diagram showing a production example of a wet urethane sheet in the present invention.
6 is a cross-sectional view showing a mold structure for forming a urethane foam layer in the present invention and a state in which each component is disposed in the mold.
7 is a photograph showing an example of a jig for forming the unevenness on the upper surface of the wet urethane sheet in the present invention.

The insole of the present invention has a three-layer structure consisting of a non-slip sheet 10, a urethane foam layer 20 and a lower sheet 30 from the upper side to the lower side.

The non-slip sheet 10, which is a component of the present invention, has a structure in which the upper surface of the wet urethane sheet 10a is removed to form a non-slip groove 14 having a diameter of 10 to 100 mu m on the upper surface.

Fig. 1 shows the surface of the wet urethane sheet 10a, and Fig. 2 shows a cross-sectional micrograph of the wet urethane sheet 10a.

As shown in the drawing, the wet urethane sheet 10a, which is a raw material of the non-slip sheet 10 in the present invention, has a plurality of upper cells 11 having a diameter of 10 to 100 μm on the surface thereof A plurality of lower cells 12 having a diameter larger than that of the upper cell 11 and having a vertically long column shape and a lower diameter than that of the upper cell 11 are formed in a lower portion of the upper cell 11.

In addition, fine pores (13) smaller in diameter than the diameter of the upper cell (11) are formed in a portion where the upper cell (11) and the lower cell (12) are not formed.

Fig. 3 shows the upper surface of the non-slip sheet 10 produced by removing the upper surface of the wet urethane sheet 10a, and Fig. 4 shows an example of the cross section of such a wet urethane sheet 10a.

As shown in the drawing, the upper surface of the wet urethane sheet 10a is removed, and the upper cell 11 is exposed to form a non-slip groove 14 having a diameter of 10 to 100 μm on the upper surface.

That is, the non-slip grooves 14 of the non-slip sheet 10 are made of the exposed grooves or holes of the upper cell 11 as the upper surface of the wet urethane sheet 10a is removed.

At this time, the number of the non-slip grooves 14 due to the removed upper cell 11 is formed from as few as 100 to as many as 700 per 1 mm 2.

As is well known, the wet urethane sheet 10a is a polyurethane solution in which a polyurethane resin solids dissolved in a dimethylformamide (DMF) solvent coagulates and coagulates in contact with a coagulating solution containing dimethylformamide and water, And a plurality of cells are formed.

Fig. 5 conceptually shows a process for producing the wet urethane sheet 10a and for producing the non-slip sheet 10 using the same.

First, a polyurethane solution is prepared by dissolving a solid component of a polyurethane (PU) resin in a dimethylformamide (DMF) solvent at 25 to 75% to prepare a wet urethane sheet 10a.

5, the upper surface of the polyester film 1 having a thickness of 50 to 150 탆 is polished in the longitudinal direction with a pepper roll 2 to form a fine scratch 1a like a hair line.

The fine scratches 1a shown in the drawings are shown largely for ease of understanding and are not limited to the size and proportions of the drawings. .

The formation of the fine scratches 1a on the polyester film 1 is advantageous in that the polyurethane solution applied to the polyester film 1 serving as a carrier in the coagulation step and the solvent removal step in the production process of the wet urethane sheet 10a is removed Thereby preventing the escape phenomenon.

Particularly, when the polyester film (1) is used as it is without surface grinding, the polyurethane solution is coagulated and dried, and the adhesion on the bottom surface is weakened due to the shrinkage phenomenon, so that the polyurethane film is often detached from the polyester film (1) .

Furthermore, when the surface skin is removed, the external force is strongly exerted in the polishing process using the pepper roll, thereby providing a higher adhesive force.

The dissolved polyurethane solution 3 is applied on the upper surface of the polyester film 1 on which the fine scratch 1a is formed with a knife coater 4 or a comma coater to a thickness of 200 to 700 탆 as shown in Fig.

The polyurethane solution 3 was added to a coagulation bath 6 in which a coagulation solution 5 containing 60 wt% of water and 40 wt% of dimethylformamide (DMF) was stored at 20 to 30 degrees Celsius The coated polyester film (1) is put in and solidified.

In the coagulation tank (6), residual dimethylformamide is removed by substitution reaction between water and a solvent of dimethylformamide (DMF).

Then, it is dried with hot air to completely remove moisture and residual solvent.

By this process, the composite film 8 in which the wet urethane sheet 10a is integrally bonded to the upper surface of the polyester film 1 is produced.

When the coagulation process with the solvent in the coagulation tank 6 is examined, the liquid in the coagulation tank 6 occupies 60% by weight of the liquid. When the upper surface of the polyurethane solution 3 comes into contact with water, The DMF is replaced with water and solidified from the surface layer to form a film skin layer as shown in FIG.

The surface skin layer shown in FIG. 1 is not substantially different from the material of the lower part of the surface skin layer, but is a film formed according to the solidification rate difference according to the rapid solidification of the surface.

This surface skin layer has a fine pore of several micrometers or less in the place where DMF exits.

In this case, the solution is in a solution state below the surface skin layer. As the water and the DMF are continuously replaced through the fine holes in the surface skin layer, rapid substitution can not be performed as in the case of the surface skin layer. However, the polyurethane solution (3) And a plurality of layers of cells are formed just below the surface skin layer by the action of stress.

A cross-sectional photograph of the wet urethane sheet 10a shown in Fig. 2 shows the shape of these cells.

In other words, the upper cell 11 having a smaller size on the upper side is formed in the lower part of the upper cell 11 while taking the same shape as the crosser (jar) due to the stressing action due to the addition of water and the substitution rate of water and DMF, The lower cell 12 having a larger size is formed, and the micropores 13 having a size much smaller than that of the upper cell are formed by replacing DMF with water between the cells.

When the lower cell 12 takes a shape like a crosshair, the stress acting due to the addition of water becomes worse and the force of gravity is applied, so that the lower cell 12 becomes convex.

At this time, the upper cell 11 preferably has a size of 10 to 100 μm, preferably 10 to 50 μm, and the thickness of the outer wall between the cell and the cell is preferably about 5 to 20 μm.

On the other hand, the upper surface (surface skin layer) of the upper surface side wet urethane sheet 10a of the composite film 8 after the removal of the residual solvent is polished with a peper roll to remove it.

At this time, the removal of the upper surface may be performed by removing the upper thickness by using a cutter or the like, but in the case of removing by the cutter, the height of the top surface of the surface is made constant, and the removal method using the above- More preferable.

When this surface skin layer (upper surface of the non-slip sheet) is removed, the upper portion of the upper cell 11 of the wet urethane sheet 10a is cut off and appears as a groove or a hole.

Also, between the hole and the hole, a part of the micropores in which DMF is substituted with water is also exposed as a groove or a hole.

That is, the non-slip grooves 14 are made of grooves or holes exposed by the cut upper cell 11, the micro pores 13, and the non-slip grooves 14 widens the contact area with the socks as much as possible, And absorbs the sweat discharged from the sock.

Thereafter, the polyester film 1 is peeled and removed from the composite film 8 to produce the non-slip sheet 10.

At this time, instead of the polyester film (1), it may be produced by removing the fabric from the wet urethane sheet coated on the release treated fabric.

The urethane foam layer 20, which is a component of the present invention, is integrally bonded to the lower face of the non-slip sheet 10 with the non-slip sheet 10.

6, the urethane foam layer 20 is prepared by preparing an insole mold 40 composed of a mold top plate 41 and a mold bottom plate 42 and forming a non-slip sheet 10 on the mold top plate 41 And the lower sheet 30 is unfolded and fixed to the lower mold plate 42. [

At this time, the upper surface of the non-slip sheet 10 is brought into contact with the upper surface of the mold upper plate 41.

The polyol and isocyanate were mixed well on the lower sheet 30 fixed on the mold lower plate 42. The insoluble mold upper plate with the non-slip sheet 10 was closed and tightly clamped with a clamp for 5 minutes at a temperature of 50 to 60 degrees Celsius for 5 minutes. Keeping the temperature and foaming.

At this time, the urethane foam has a density of 20% to 45% (0.2 to 0.45 g / ㎣).

The urethane foam layer 20 thus formed can form a microcell having a cell size of 200 to 50 μm, thereby improving the shock absorption function.

The hardness is measured by a Shoya c hardness meter. As a result, the deep hardness is preferably between 30 and 45.

Also, when the impact is applied, the foam cell has sufficient rebound resilience to act as rebounding elasticity to return the force to the air cushion before the impact reaches the bottom.

This cushion layer plays a role of energy return which prevents an impact when the foot is landed and a force is applied to the surface layer of the insole so that an anhydrous cell does not close the foot with the foot, and the applied force is returned to the place.

 The role of this cushion layer protects your knees and ankles against violent movement for a long time, and you can feel the body being much lighter because of the repulsive elasticity.

On the other hand, it is necessary to form a concave and convex surface on the upper surface of the mold (41) by forming a square or rhomboidal shape having a depth of 0.5 mm and a thickness of 1.5 mm, You may.

Fig. 7 shows an example of a jig for forming the diamond-shaped upper unevenness 50. Fig.

The lower sheet 30, which is a component of the present invention, is integrally bonded to the urethane foam layer 20 under the urethane foam layer 20 and is made of a non-breathable material.

The lower sheet 30 may be formed by extruding thermoplastic polyurethane into an extruded film having a thickness of 50 탆.

At this time, the thermoplastic polyurethane resin is preferably a Shore A hardness meter having a hardness of 85 to 95.

The lower sheet 30 encloses the urethane foam layer 20 on the inner side of the insole together with the non-slip sheet 10, and its function is to store the force by the waterproof function and the balloon effect.

That is, as shown in the cross-sectional view of FIG. 6, the lower sheet 30 is formed so that its periphery is bent upwardly so as to surround the urethane foam layer 20.

Considering the technical significance due to this shape, the foam cell inside the urethane foam layer 20 has a structure that is not a complete open cell like a filter foam in a semi-open cell, but a cell that is not a complete cross cell is slightly opened.

When this type of foam is pressed or touched by the force, the air in the foam cell will escape out of the insole when the foam is pressed.

However, since the lower sheet 30 is disposed under the urethane foam layer 20, the air inside the urethane foam layer 20 can not escape to the outside and moves to other cells in the interior to be pressurized. When the pressure is disassembled, The Lord has the power to add strength. In other words, you can get a balloon effect.

In addition, the thermoplastic polyurethane resin has a waterproofing property by itself, so that even when water enters the shoe when it rains, it prevents penetration into the insole and prevents the insole from becoming heavy.

In the above configuration, an auxiliary support layer 40 may be further formed between the non-slip sheet 10 and the urethane foam layer 20. The auxiliary support layer 40 may be a nonwoven fabric or a mesh cloth.

The auxiliary support layer 40 serves to firmly bond the non-slip sheet 10 and the urethane foam layer 20 during the manufacturing process and during use.

6 shows a configuration in which the urethane foam layer 20 is formed in a state where the auxiliary support layer 40 is provided.

The auxiliary support layer 40 is formed as a whole or partially adhered to the bottom of the non-slip sheet 10 that has been manufactured using an adhesive.

At this time, when the auxiliary support layer 40 is made of a nonwoven fabric, partial adhesion is preferable, and when the auxiliary support layer 40 is made of a mesh, it can be formed by total adhesion.

This is because the lower cell 12 and the fine pores 13 formed in the non-slip sheet 10 are in a state of maintaining the structure that can be connected to the pores in the urethane foam layer 20 while exhibiting the function of the auxiliary supporting layer 40 The adhesive structure to allow the.

On the other hand, a water repellent coating layer 15 coated with a discontinuous coating film may be formed on the bottom surface of the non-slip sheet 10.

5 shows conceptually the formation of a discontinuous coating film in which the water repellent coating layer 15 is partially coated on the bottom surface of the non-slip sheet 10.

The water repellent coating layer 15 is prepared by adding 0.1 to 0.2 wt% of a water repellent agent as an additive to a resin coating liquid having a solid content of 2 to 5 wt% Of gravure roll 7 is gravure coated and dried by hot air.

At this time, the resin coating liquid does not need to be both oil-based and water-based, but it is better if it is water-based.

If the water-repellent coating layer 15 is not formed, the liquid polyurethane raw material is formed into a foam in the process of producing a urethane foam layer 20 to be described later, and when there is fluidity just before curing, The capillary phenomenon and internal pressure may cause the liquid to seep from the lower portion of the non-slip sheet and flow out to the upper surface through the lower cell 12 and the micropore 13 of the sheet 10, and the upper cell 11.

When the liquid flows into the upper cell 11 and the lower cell 12, the micropore 13, and the upper cell 11, the quality of the upper surface of the non-slip sheet 10 can be improved. I will not.

At this time, if the resin is coated to a thickness exceeding 5% by mass, the coated surface will have a high viscosity or a volume of the resin, and the holes on the bottom surface of the non-slip sheet 10 will be completely covered and the coated film will be a continuous film, The air remaining in the space between the non-slip sheet 10 and the lower sheet 30 remains in the product because there is no place for the air to escape from the non-slip sheet 10 and the lower sheet 30. Thus,

Therefore, air can be smoothly flowed through the non-slip sheet 10 because the lower sheet 30 can not communicate with air, that is, when the urethane of the inner liquid phase is expanded while increasing the volume, the internal residual air- The liquid must have the function of causing the surface tension by the size adjustment of the hole and the water repellency which prevents the urethane liquid from escaping.

As a result of several experiments, it was found that when a water repellent agent is applied in a liquid phase of 2 ~ 5% solids content with a # 100-200 mesh gravure roll, a discontinuous coating film is formed so that a continuous amount of the coating amount can not be formed by a small amount of application, The hole is made smaller, and at the same time, the hydrophilic urethane liquid phase and the applied coating are made hydrophobic so as to give a pushing force to each other, so that the above function can be obtained.

In this configuration, the non-slip sheet 10 has a thickness of 0.2 to 0.8 mm, the lower sheet 30 has a thickness of 0.03 to 0.1 mm, and the urethane foam layer 20 has a thickness It is preferable that the corresponding front portion is 1.1 to 2.77 mm, the middle portion corresponding to the user's forefoot position is 2.1 to 3.77 mm, and the rear portion corresponding to the user's heel has a thickness of 2.6 to 5.27 mm.

Conventional insole usually consists of 5 ~ 8mm of the front part and 6 ~ 10mm of the back part. 70 ~ 80% of the total insole is made of EVA foam and the rest is made of urethane foam or PE foam.

However, if the thickness is too large, the athlete's posture becomes unstable and moves away from the ground, which reduces the agility and accuracy of the motion.

In order to prevent this, thinning the thickness does not satisfy the basic function of having an insole such as shock absorption.

The Applicant has studied the optimum thickness suitable for the structure of the present invention as described above. When the thickness is as described above, it is possible to minimize the thickness while satisfying the basic shock absorbing function, Of the population.

The surface hardness measured on the upper surface of the non-slip sheet 10 is 45 to 65 on a Shore C hardness meter, and the surface hardness measured on the lower surface of the lower sheet 10 is 30 to 50 Respectively.

This hardness measurement value is that the portion of the non-slip sheet 10 which is in contact with the foot is relatively hard as compared with the portion of the lower sheet 30, so that the foot load of the wearer is dispersed relatively evenly on the adjacent surface of the non-slip sheet 10, It means that the impact can be absorbed through the urethane foam layer 20, which indicates that the impact dispersion is effective.

The non-slip sports insole of the present invention constituted as described above can satisfy the conditions of shock absorption and bow protection, which are the basic functions of the insole, though the thickness is thinner than that of the conventional insole. In addition, It is possible to increase the accuracy and prevent the loss of the power, thereby satisfying the maximization of the power.

Particularly, the contact area of the upper surface of the insole contacting the foot is increased through the upper cell 11, the micro pores 13 and the like, so that the slip is not made, thereby preventing loss of force and attitude instability due to slip .

The non-slip soles for sports according to the present invention can be used for athletic sports such as fencing, taekwondo, etc., which are sensitive to attitude and agility, and professional athletes such as soccer, volleyball, basketball, Athletes, and so on).

1: polyester film 1a: fine scratch
2: pepperol 3: polyurethane solution
4: knife coater 5: coarse liquid
6: Coagulation tank 7: Gravure roll
8: composite film 10: non-slip sheet
11: upper cell 12: lower cell
13: fine pores 14: non-slip grooves
15: Water repellent coating layer
20: Urethane foam layer 30: Lower sheet
40: Insole mold 41: Mold top plate
42: mold bottom plate
50: upper unevenness

Claims (10)

For insoles,
A plurality of upper cells 11 having a diameter of 10 to 100 탆 are formed on the surface of the insole. A lower column of the upper cell 11 has a larger diameter than that of the upper cell 11, A plurality of lower cells 12 having a smaller diameter than the upper cell 11 are formed in the lower cell 12. In the portion where the upper cell 11 and the lower cell 12 are not formed, A non-slip sheet 10 on which an upper surface of the wet urethane sheet 10a is removed to expose an upper cell 11 and a non-slip groove 14 having a diameter of 10 to 100 mu m is formed on an upper surface of the non-slip sheet 10;
A porous urethane foam layer 20 integrally bonded to the non-slip sheet 10 at a lower portion of the non-slip sheet 10;
And a lower sheet (30) integrally bonded to the urethane foam layer (20) at the lower part of the urethane foam layer (20) and made of a non - breathable material,
Characterized in that an auxiliary support layer (40) is formed between the non-slip sheet (10) and the urethane foam layer (20)
Non-slip insole for sports.
delete The method according to claim 1,
Characterized in that a water repellent coating layer (15) coated with a discontinuous coating film is formed on the bottom surface of the non-slip sheet (10)
Non-slip insole for sports.
The method according to claim 1,
Characterized in that the upper surface of the non-slip sheet (10) is provided with an upper unevenness (50)
Non-slip insole for sports.
The method according to claim 1,
Characterized in that the lower sheet (30) comprises an extruded film extruded from a thermoplastic polyurethane resin.
Non-slip insole for sports.
The method according to claim 1,
The non-slip sheet 10 has a thickness of 0.2 to 0.8 mm,
The lower sheet 30 has a thickness of 0.03 to 0.1 mm,
The urethane foam layer 20 has a front portion corresponding to the user's toe position of 1.1 to 2.77 mm, an intermediate portion corresponding to the user's forefoot position of 2.1 to 3.77 mm, and a rear portion corresponding to the user's heel having a thickness of 2.6 to 5.27 mm ≪ / RTI >
Non-slip insole for sports.
The method according to claim 1,
The surface hardness measured on the top surface of the non-slip sheet 10 is 45 to 65 on a Shore C hardness meter,
Characterized in that the surface hardness measured on the bottom surface of the lower sheet (30) is 30 to 50 on a Shore C hardness meter.
Non-slip insole for sports.
The method according to claim 1,
Characterized in that the lower sheet (30) is formed by wrapping the periphery of the urethane foam layer (20)
Non-slip insole for sports.
The method according to claim 1,
Wherein the urethane foam layer (20) has a density of 0.2 to 0.45 g / ㎣ and a deep part hardness of 30 to 45 on a Shore C hardness meter.
Non-slip insole for sports.
The method according to claim 1,
Characterized in that the non-slip sheet (10) is made by removing the fabric from a wet urethane sheet coated on the release treated fabric.
Non-slip insole for sports.
KR1020160041669A 2016-04-05 2016-04-05 Non slip insole for sports KR101638404B1 (en)

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PCT/KR2017/003171 WO2017175995A1 (en) 2016-04-05 2017-03-24 Athletic non-slip insole

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KR101686547B1 (en) 2016-09-01 2016-12-14 김태효 Non slip socks for sports
WO2017175995A1 (en) * 2016-04-05 2017-10-12 김태효 Athletic non-slip insole
WO2018038570A1 (en) * 2016-08-25 2018-03-01 윤선미 Footwear for heel cover
KR102002633B1 (en) 2018-07-19 2019-07-22 김태효 Non slip foot wear with separating cushion part
WO2019182176A1 (en) * 2018-03-23 2019-09-26 김태효 Non-slip footwear
KR102306563B1 (en) 2020-10-06 2021-10-08 주식회사 위풋테크놀로지 manufacturing method of nonslip socks
KR102306555B1 (en) 2020-10-06 2021-10-08 주식회사 위풋테크놀로지 making apparatus of nonslip socks
KR102306525B1 (en) 2020-10-06 2021-10-08 주식회사 위풋테크놀로지 mold for nonslip socks making
US11172729B2 (en) 2019-09-20 2021-11-16 Wefoot Technology Inc. Non-slip shoe wear
KR20220155089A (en) 2021-05-14 2022-11-22 안정근 A Shoe Insole For Preventing a Foot from Slipping

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WO2017175995A1 (en) * 2016-04-05 2017-10-12 김태효 Athletic non-slip insole
WO2018038570A1 (en) * 2016-08-25 2018-03-01 윤선미 Footwear for heel cover
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KR102002633B1 (en) 2018-07-19 2019-07-22 김태효 Non slip foot wear with separating cushion part
US11172729B2 (en) 2019-09-20 2021-11-16 Wefoot Technology Inc. Non-slip shoe wear
KR102306555B1 (en) 2020-10-06 2021-10-08 주식회사 위풋테크놀로지 making apparatus of nonslip socks
KR102306525B1 (en) 2020-10-06 2021-10-08 주식회사 위풋테크놀로지 mold for nonslip socks making
KR102306563B1 (en) 2020-10-06 2021-10-08 주식회사 위풋테크놀로지 manufacturing method of nonslip socks
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EP3987964A1 (en) 2020-10-06 2022-04-27 We foot Technology Inc. Manufacturing method of nonslip socks
KR20220155089A (en) 2021-05-14 2022-11-22 안정근 A Shoe Insole For Preventing a Foot from Slipping
KR20240019193A (en) 2021-05-14 2024-02-14 안정근 A Shoe Insole For Preventing a Foot from Slipping

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