KR101657274B1

KR101657274B1 - Non slip socks-insole set for sports

Info

Publication number: KR101657274B1
Application number: KR1020160041653A
Authority: KR
Inventors: 김태효; 장창오
Original assignee: 김태효; 장창오
Priority date: 2016-04-05
Filing date: 2016-04-05
Publication date: 2016-09-13

Abstract

The present invention relates to a non-slip socks-insole set for sports.
The sports non-aspersion hosiery-insole set for sports comprises a hosiery body 1000, a hot-melt urethane layer 930 attached to the surface of the hosiery body 1000, And a urethane layer 310 made of a wet urethane sheet, wherein the urethane layer 310 is formed by coagulating in a coagulating solution in which water and a dimethylformamide-based solvent are mixed while a polyurethane solution is applied on the fabric A non-slip sock which is formed on the inner surface of the sock so as to remove the fabric and has a cell formed by substitution of the solvent with the solidification treatment, and has a concavo-convex structure on the upper surface thereof; The insole includes an upper cell 11 having a diameter of 10 to 100 m in the upper layer and a lower cell 11 having a diameter larger than the diameter of the upper cell 11 in a lower layer thereof, The lower cell 12 having a larger diameter than that of the upper part is formed in the upper and lower cells 11 and the upper cell 11 and the lower cell 12, The upper surface of the wet urethane sheet 10a on which the smaller pores 13 are formed is peeled off so that the upper cell 11 is exposed and a non-slip groove 14 having a diameter of 10 to 100 占 퐉 is formed on the upper surface A 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; 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, wherein the non-slip sheet 10 has a thickness of 0.2 to 0.8 mm And 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, 2.1 to 3.77 mm, and the rear portion corresponding to the heel of the user has a thickness of 2.6 to 5.27 mm.
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 socks-insole set for sports}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a socks-to-insole set, a sports non-slip sock for a professional athlete who performs intense walking exercises such as a soccer or marathon so as to prevent injuries, - About the insole set.

In general, when exercising, the slip phenomenon between the foot and the shoe causes a lot of energy loss. Also, when the stop or direction of the motion is changed, the foot and the shoe are slipped due to the acceleration, and the posture is disturbed. It interferes.

Sneakers tighten the strap but can not completely eliminate the space, it also creates a gap with severe exercise and loss of strength and instability of the posture gives a significant reduction in exercise capacity and accuracy.

When walking or exercising for a long time, the condition of the terrain or the force of the force, the left and right or shake back and forth, and the foot bumps over the inside of the shoe.

Therefore, there is no problem in short-time walking or short-time exercise, but if you exercise long-distance walking, long-time exercise, or strong intensity exercise, you will feel ankle or foot pain after exercise.

If you think you can do so by walking too much or exercising hard, but if you eliminate the root cause of pain, the pain can be resolved.

The cause of the pain is that the foot, socks, and the insole part of the sock and the shoes slip due to the force applied when walking or running, and the impact of the foot and the inside of the shoe strikes continuously.

If this small impact accumulates for a long time, your foot or ankle becomes sore.

In the foot movement, even if the posture is stable, there is always a resistance opposite to the direction of the applied force. At this time, slip occurs between the foot and the shoe, and foot and shoe strike.

As a technique for solving such a problem, a non-slip sock made by applying or printing a non-slip silicone resin is disclosed in "a method for manufacturing a gripping fabric" (Korean Patent Laid-Open No. 10-2013-0109131, have.

The non-slip of this sock is excellent, but the sweat is so good that when the sock is wet or rainy, when the soccer or mountain climbing is done, the water is absorbed into the shoe, and the sweat and water are between the sock and the foot, The water film is formed between the insole and the slip, which causes a problem that the non-slip function is lost.

On the other hand, the insole is a constituent of shoes with outsole and middle sole of shoes such as shoes or sneakers. It provides a feeling of padding and proper shock absorption without giving a feeling of hardness and foreign body when touching the foot, It takes charge of the enemy 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.

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 suitable insole for various purposes in the insole, so that the "insole of front footwear with close contact with the sole" (Korean Patent Registration No. 10-1301690, Patent Document 2) ) Have begun to be introduced.

In Patent Document 2, 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 to 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 2 has a purpose to make the insole structure on the plane change, so that it can be brought into close contact with the soles of the feet when walking on the floor, so that the walking can be made 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.

KR 10-2013-0109131 (2013.10.07) KR 10-1301690 (2013.08.23) KR 10-0470905 (January 31, 2006)

The present invention provides a non-asbestos sports socks-insole for solving the problem of the prior art as described above. By producing a wet urethane sheet for forming a urethane layer for applying a urethane solution and then solidifying, By forming a porous layer and a cell, forming a urethane layer on the fabric, and peeling the fabric, a rough and large cell is formed on the surface of the urethane layer by unevenness, coagulation due to the peeling of the fabric, To enhance the non-slip function by allowing the surface to be exposed, and to minimize the water film phenomenon by allowing sweat or water to penetrate into the pores of the urethane layer.

In addition, in the case of sock-insole set, it satisfies the high non-slip function which is not normally required for general insoles, and also prevents the water film phenomenon from occurring even when moisture from the pedestrian socks comes into contact with the surface, And to increase exercise capacity.

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, and the surface skin layer is peeled off so that numerous irregularities are formed on the upper surface, so that a large number of irregularities can be formed 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.

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The sports non-aspersion hosiery-insole set for sports comprises a hosiery body 1000, a hot-melt urethane layer 930 attached to the surface of the hosiery body 1000, And a urethane layer 310 made of a wet urethane sheet, wherein the urethane layer 310 is formed by coagulating in a coagulating solution in which water and a dimethylformamide-based solvent are mixed while a polyurethane solution is applied on the fabric A non-slip sock which is formed on the inner surface of the sock so as to remove the fabric and has a cell formed by substitution of the solvent with the solidification treatment, and has a concavo-convex structure on the upper surface thereof; The insole includes an upper cell 11 having a diameter of 10 to 100 m in the upper layer and a lower cell 11 having a diameter larger than the diameter of the upper cell 11 in a lower layer thereof, The lower cell 12 having a larger diameter than that of the upper part is formed in the upper and lower cells 11 and the upper cell 11 and the lower cell 12, The upper surface of the wet urethane sheet 10a on which the smaller pores 13 are formed is peeled off so that the upper cell 11 is exposed and a non-slip groove 14 having a diameter of 10 to 100 占 퐉 is formed on the upper surface A 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; 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, wherein the non-slip sheet 10 has a thickness of 0.2 to 0.8 mm And 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, 2.1 to 3.77 mm, and the rear portion corresponding to the heel of the user has a thickness of 2.6 to 5.27 mm.

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According to the present invention, the slip of the foot and the sock is held, the slip of the sock and the insole does not occur, that is, the foot and the shoe do not slip and the unity of the foot is maintained and the applied force overcomes the resistance without loss, So that the object can be achieved even with a small force.

As a result, it reduces the loss of power and prevents the foot from slipping or slipping. When climbing the slope, it is not pushed back so that the heel does not hit the inside of the shoe. When the slope comes down, .

In addition, even when walking or exercising, the condition of the terrain or the force of the force prevents the shaking from moving to the left or right, thus minimizing the impact of the foot on the inside of the shoe.

As a result, the pain of the foot after a long period of heavy exercise is removed, and the pain of the foot or ankle is reduced even during a prolonged heavy exercise, and the fatigue hallway after the exercise becomes faster.

More specifically, by producing a wet urethane sheet for forming a urethane layer for applying a urethane solution and then solidifying, a large number of pores and cells are formed in the urethane layer, a urethane layer is formed on the fabric, and then the fabric is peeled The surface of the urethane layer is exposed on the surface of the urethane layer by unevenness due to the peeling of the fabric on the surface of the urethane layer, the cell due to coagulation and de-DMF, thereby enhancing the non-slip function and sweeping the water into the pores of the urethane layer The water film phenomenon can be minimized.

In addition, in the case of sock-insole set, it satisfies the high non-slip function which is not normally required for general insoles, and also prevents the water film phenomenon from occurring even when moisture from the pedestrian socks comes into contact with the surface, And 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 peeled off, numerous irregularities are formed on the upper surface, and a large number of irregularities can be formed 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 process diagram showing a process for producing a sock of the present invention.
Fig. 2 is an enlarged photograph showing the surface of the urethane layer in the present invention. Fig.
3 is a photograph showing the surface of a wet urethane sheet in the present invention.
4 is a microscope photograph showing the cross-sectional structure of the wet urethane sheet in the present invention.
Fig. 5 is a photograph showing the surface of the wet urethane sheet in which the upper surface is peeled in the present invention. Fig.
6 is a microscope photograph showing the cross-sectional structure of a non-slip sheet in the present invention.
7 is a process chart showing a production example of a wet urethane sheet in the present invention.
8 is a cross-sectional view showing a mold structure for forming a urethane foam layer and a state in which each component is disposed in a mold in the present invention.
9 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 sports non-slip socks of the present invention take the structure shown in the lower right of Fig.

More specifically, a sock body 1000, a hot-melt urethane layer 930 attached to the surface of the sock body 1000, and a urethane layer (not shown) joined to the hot-melt urethane layer 930, Gt; 310 < / RTI >

The urethane layer 310 has fine pores and cells formed by substitution with a solvent resulting from coagulation treatment in a coagulating solution in which water and a dimethylformamide solvent are mixed in a state in which a polyurethane solution is coated on the fabric, The peeling of the fabric exposes the relatively large portion of the cell to the outside, thereby maximizing the surface area and performing the slip prevention function.

Particularly, since the urethane layer 310 has a porous structure, it provides a path for sweat and water to escape even if there is sweat or water, thereby suppressing the occurrence of a water film phenomenon.

FIG. 2 is an enlarged photograph of the surface of the urethane layer 310 in the present invention. As shown in FIG. 2, it is seen that a large number of cells are formed and surface irregularities are formed.

Hereinafter, a method of manufacturing a non-slip sports socks according to the present invention will be described in detail with reference to the accompanying drawings.

1. Manufacture of slip-resistant sheet

The polyurethane solution 300 is prepared by dissolving the solid component of the polyurethane resin in a solvent of dimethyl formamide (DMF) at 25 to 50%.

At this time, the polyurethane resin to be used is selected so that the completed sheet can be elongated by 300% or more when the sheet is cut to a width of 10 mm, and the restorative force is selected so that the instantaneous restoration force is 95% do.

In addition, the hardness shall be a Shore A hardness of 80 or less.

1, the silicone release layer 200 is formed on the surface of the fabric 100 and the polyurethane solution 300 is coated on the silicone release layer 200 with a knife coater or a comma coater To a thickness of 200 to 700 mu m.

The polyurethane solution 300 is applied to the coagulation bath 500 where the coagulation solution 400 prepared by mixing 60% by weight of water and 40% by weight of the dimethylformamide solvent is stored at a low temperature of 20 to 30 ° C And then the fabric 100 is coagulated.

The coagulated sheet is placed in a water bath and the residual dimethylformamide is removed by a displacement reaction between water and a dimethylformamide solvent.

Then, it is dried with hot air to completely remove moisture and residual solvent to prepare a slip resistant sheet.

The finished slip-resistant sheet 600 will have a urethane layer 310 with many fine pores and cells with a density of 25-50% on the fabric 100.

The elongation of the socks varies on the basis of the weaving method and yarn type, but on average, it increases to less than 70% of the magnetic length.

If the attached sheet or adhesive is soft and has a elongation of 300% or more, the sock does not inhibit the inherent elongation.

Also, the nature of softness minimizes the sense of foreign body.

The coating thickness of the polyurethane solution 300 is most preferably 300 mu m.

This thickness has a good effect on the elongation while minimizing the foreign body feel at the time of wearing, and the micropores in the thickness direction and the plurality of cells absorb the impact applied from the outside.

When the surface of the fabric 100 is subjected to a silicone release treatment and the fabric 100 is peeled off in the slip prevention sheet 600 in which the polyurethane solution 300 is coated and solidified according to a subsequent process, The marks on the surface of the fabric 100 remain intact.

Even if the fabric 100 is subjected to release treatment, the urethanes sandwiched between the fabrics 100 adhere to the fabric 100, and numerous small grains are separated from the slip prevention sheet 600.

The size is 0.01 mm or less.

In addition, in the solidification and de-DMF process, cells are formed in the urethane layer 310, which are formed with small and fine cells at the upper side and coarse and large cells at the lower side.

At this time, since the surface to be used is at the bottom, a rough and large cell is positioned just below the surface to be used.

The bumpy fabric marks, the urethane scraps below 0.01 mm, the rough, large cells just below, and the urethane scraps that fell off during the stripping process make the rough and large cells appear on the surface.

As a result, the surface area is maximized so as to prevent slip with the soft material and to provide the way of sweating and water escape even if there is sweat or water, while the anchor pushes the water from the narrow surface area first, The phenomenon will not occur.

2. Production of hot-melt adhesive film and attachment to slip-resistant sheet

A hot-melt adhesive film 900 having a thickness of 0.05 mm is produced by extruding a thermoplastic polyurethane resin onto a release paper 920 which has been subjected to a release treatment on a paper 910.

At this time, the polyurethane resin can have a elongation of 300% or more when the finished sheet is cut to a width of 10 mm and pulled, and the hardness of the resin is set to a softness of 80 or less on a Shore A hardness meter.

As shown in the drawing, heat is applied to adhere the adhesive surface of the hot-melt adhesive film 900, that is, the hot-melt urethane layer 930 and the urethane layer 310 of the slip-resistant sheet 600 so as to face each other .

After the attachment, the release paper 920 and the paper 910 attached to the other surface of the hot-melt adhesive film 900 are removed

4. Punch

The slip prevention sheet 600 to which the hot melt adhesive film 900 is adhered is half cut using a blade mold in the direction of the fabric 100 at the side of the hot melt urethane layer 930 to form the urethane layer 310 excluding the fabric 100, And the hot-melt urethane layer 930 have a predetermined pattern shape.

At this time, it is good to arrange the square mold of 10mmx12mm size with the interval of 3mm ~ 5mm and the whole size of the blade mold as the bottom area of the sock.

Remove unnecessary parts after half cutting is finished.

5. Attachment

The slip prevention sheet 600 in which the urethane layer 310 and the hot-melt urethane layer 930 are formed in a predetermined pattern is selectively attached to the inner or outer surface or inner and outer surfaces of the sock by applying heat and pressure.

Thereafter, the silicon release layer 200 and the fabric 100 are removed.

The hot plate used for the attachment is made of metallic materials such as copper, aluminum, and steel, polished so that the surface is flat, and an end mill having an angle of 90 degrees is machined into a width of 1 mm and a width of 2 mm A square having a height of 1 mm and a bottom of 1 mm x 1 mm can be formed as many as the area.

If the pressure is applied by applying pressure to a hot plate formed by a large number of square horns with a height of 1 mm and a height of 1 mm and a height of 1 mm on the slit sheet, the surface of the slab sheet is shaped into a smooth curved heat plate, It is possible to improve the slip effect by a widened cross-sectional area and to play a good role in a harsh environment such as washing.

The sports non-slip sock of the present invention constituted as described above can be contacted with the insole constituting the shoe by exposing the urethane layer 310 to the outside of the hosiery as a normal non-slip sock.

However, it is general that a normal insole does not have a non-slip function.

This is because when the non-slip function is applied to the insole of the shoe of the general wearer, the sock is peeled off.

However, in the case of professional sportsmen who perform intense exercise, the joints or muscles due to intense activities are severely affected by the degree of slip prevention. Especially, when the slip occurs at the portion in contact with the insole, there is a limit in exercise performance.

In particular, the sock of the present invention is provided with a non-slip function and has a function of suppressing the water film phenomenon, but sufficient sweat discharge due to intense activity such as a professional athlete may be insufficient to suppress the sufficient water film phenomenon.

In addition, the sock itself has flexibility and stretchability as a function of non-slip, so that even if the material of the urethane layer 310 is selected in accordance with the stretchability of the sock,

In addition, in forming the sock of the present invention, the urethane layer 310 may be formed on the inner surface of the sock to prevent the slip between the foot and the sock. In this case, And the slip between the insole and the insole can not be prevented.

Accordingly, there is a need to provide an insole optimized for sports non-slip socks of the present invention.

Hereinafter, the insole constituting the set of the socks according to the present invention will be described in detail as needed.

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 a non-slip groove 14 having a diameter of 10 to 100 mu m is formed on the upper surface by peeling the upper surface of the wet urethane sheet 10a.

Fig. 3 shows the surface of the wet urethane sheet 10a, and Fig. 4 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 according to the present invention, has an upper cell 11 having a diameter of 10 to 100 μm formed in the upper layer as shown in FIG. 4 And a lower cell 12 having a diameter larger than that of the upper cell 11 and having a longer vertical columnar shape and a lower diameter than that of the upper cell 11 is formed in a lower layer portion.

On the wall surface between the upper cell 11 and the lower cell 12, micropores 13 smaller than the diameter of the upper cell 11 are formed.

Fig. 5 shows the upper surface of the non-slip sheet 10 produced by peeling the upper surface of the wet urethane sheet 10a, and Fig. 6 shows an example of the cross section of such a wet urethane sheet 10a.

As shown in the figure, the upper cell 11 is exposed as the upper surface of the wet urethane sheet 10a is peeled off, and a non-slip groove 14 having a diameter of 10 to 100 占 퐉 is formed 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 in accordance with the upper surface peeling of the wet urethane sheet 10a.

At this time, the number of the non-slip grooves 14 due to the peeled 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.

7, there is conceptually shown 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.

7, the upper surface of the polyester film 1 having a thickness of 50 to 150 占 퐉 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 fine scratch 1a is formed on the polyester film 1 because the polyurethane solution applied to the polyester film 1 serving as a carrier during the solidification step and the solvent step in the production of the wet urethane sheet 10a is peeled off 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 to the upper surface of the polyester film 1 on which the fine scratch 1a has been 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 surface layer as shown in FIG.

The surface skin layer shown in FIG. 3 is not substantially different in material from the lower part thereof, 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. 4 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 DMF is formed by substitution of water on the wall surface between the cells, and the micropore 13, which is much smaller than the upper cell, is formed.

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 peeling of the upper surface may be performed by removing the upper thickness by using a cutter or the like. However, in the case of peeling using the cutter, the height of the top surface of the surface becomes constant, and the peeling 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.

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 as shown in Fig. 8 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. 9 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. 8, 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.

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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-asbestos socks-insole set for sports according to the present invention can be used for a variety of sports such as fencing, taekwondo and the like, and a professional athlete with a long walking distance such as a sports, marathon, (Professional sports players), and the like.

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: lower mold plate 50: upper unevenness
100: Fabric 200: Silicon release layer
300: polyurethane solution 400: coagulating liquid
500: Coagulation tank 600: Slip prevention sheet
900: Hot melt adhesive film 910: Paper
920: release paper 930: hot melt urethane layer
1000: Sock body

Claims

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In the sock-insole set,
A hot melt urethane layer 930 attached to the surface of the sock main body 1000 and a hot urethane layer 930 joined to the hot melt urethane layer 930 and made of a wet urethane sheet, The urethane layer 310 is formed by coagulating in a coagulating liquid in which water and a dimethylformamide solvent are mixed with a polyurethane solution applied on the fabric, A non-slip sock having a cell formed by replacement with the solvent due to the coagulation and having a concavo-convex shape formed on an upper surface thereof;
And an insole provided in the shoe in contact with the non-slip sock,
Preferably,
A lower cell having a diameter larger than that of the upper cell 11 and having a longer column shape in the upper and lower parts and having a lower diameter than the upper part is formed in the lower part of the upper cell 11 And a fine pore 13 having a diameter smaller than the diameter of the upper cell 11 is formed on a wall surface between the upper cell 11 and the lower cell 12, A non-slip sheet 10 having a surface on which an upper cell 11 is exposed to form a non-slip groove 14 having a diameter of 10 to 100 mu m on an upper surface thereof;
A porous urethane foam layer 20 integrally bonded to the non-slip sheet 10 at a lower portion of the non-slip sheet 10;
A lower sheet 30 formed integrally with the urethane foam layer 20 at a lower portion of the urethane foam layer 20 and made of a non-breathable material,
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 &Lt; / RTI >
Non slip socks for sports - Insole set.

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