WO2009088182A2

WO2009088182A2 - Attachable and detachable upper, and an insole comprising the same

Info

Publication number: WO2009088182A2
Application number: PCT/KR2009/000002
Authority: WO
Inventors: Hwi Jin Kim
Original assignee: Umi System Co.
Priority date: 2008-01-04
Filing date: 2009-01-02
Publication date: 2009-07-16
Also published as: WO2009088182A3

Abstract

The present invention relates to an insole to which an upper can be attached and from which an upper can be detached, which said insole comprises a main insole body made of a plastic material constituted in such a way as to comprise an arch-supporting part projecting in an upward curve in order to support the arch portion of the foot of the wearer, and comprises an upper able to be attached to and detached from the upper surface of the said main insole body, and the lower surface of the said upper is covered with a selectively attachable and detachable member. Additionally, with regard to the selectively attachable and detachable upper, the present invention relates to a selectively attachable and detachable upper in which a selectively attachable and detachable member is coated onto the lower surface of the upper and which can be attached to and detached from an insole of a plastic material which is inserted into a shoe. When the present invention described above is employed, there is the advantage that, even though the selectively attachable and detachable member is stably adhered to the main insole body made of a plastic material, it can be detached when a physical force is applied and, additionally, even if detritus becomes stuck to the surface of the selectively attachable and detachable member when it has been detached, the detritus can be easily removed by washing with water and the said upper can be attached to and detached from the insole semi-permanently.

Description

[Revision 29.01.2009 by Rule 26] Detachable Upper and Insoles

The present invention relates to an upper detachable insole comprising an insole body of a plastic material according to the shape of the sole and an upper covering an upper surface of the insole body, wherein a selective detachable member is applied to the upper lower surface. The upper detachable insole according to the present invention is capable of being detached when the selective detachable member is reliably adhered to the insole body of plastic material while applying physical force, and also when foreign matter is attached to the upper surface of the detachable selective detachable member. The foreign matter can be easily removed by washing, so the upper can be attached and detached to the insole semi-permanently.

Insoles, commonly called insoles, are curved to correspond to the shape of the sole, and the edges are bent upwards to wrap the bottom of the foot so that the foot is comfortable when wearing shoes. In addition, it is made of a material that can absorb shock when walking to absorb a portion of the shock generated when the foot touches the ground to reduce the fatigue of the foot and serves to reduce the risk of injury.

Insol's materials include all types of plastics available today, depending on the application. Among these, nylon, polypropylene (PP), glass fiber, glass composite, and the like are mainly used. The composite plastic mixture refers to a form in which polybutylene terephthalate (PBT) and polyethylene terephthalate (PET) are used in combination, or a mixture of nylon and glass fiber is used. However, when a pedestrian wears only a plastic insole, the elasticity is weak and the ignition feeling is reduced, and the soles of the foot are hard to come. Therefore, materials such as polyurethane (PU), EVA (Ethylene Vinyl Acetate), and latex have excellent elasticity on the upper surface of the insole. It is used by adding upper. Conventionally, the insole and the upper are provided in the form of the upper attached to the insole upper surface to provide a fixed position in the shoe when walking.

On the other hand, as an insole member for absorbing the impact of walking or softening the insole texture, thermoplastic rubber such as neoprene rubber (NR), styrene butadiene rubber (SBR), butadiene rubber (BR), and chloroprene rubber (CR) TPR, Thermoplastic Rubber) is used. However, when walking, more impact is applied to the rear part than the front part of the foot, so insoles made of thermoplastic rubber become hard on the heel part when worn for a long time, and the rear part of the insole is settled down.

As a prior art that solves this problem, Utility Model Registration No. 20-0428449, which discloses an insole that prevents the fall of the rear axle using an insole of different density before and after, and foot correction by adding a cushion for cushioning at the heel portion. Utility Model Registration No. 20-0390153, which discloses a sole insole. The prior art discloses insoles having a multi-layered structure, such as adding a cushioning cushion or adding a foamed resin to reduce impact on the heel and prevent the insole from falling down.

The insole of the multilayer structure made of a thermoplastic rubber material according to the prior art has a problem that the overall thickness of the insole is thickened to reduce the ignition feeling, the manufacturing process and manufacturing cost is increased by the addition of unnecessary processes during manufacturing, in order to support pressure Insoles using a single material without elasticity has a problem of fatigue during long-term walking due to the regular transmission of the impact to the ground on the heel.

On the other hand, the user may wear a sole shape insole for medical or orthodontic use, at this time to measure the bend and height of the sole arch, the sole length, the shape of the foot arch, etc. to suit the user's foot to be custom made. These custom made insoles are expensive and take a long time to make.

In addition, the conventional upper is printed on the upper surface of the trademark or patterns, or treated with a colored cloth and attached to the insole body, so it is impossible to replace the upper of the color or form according to the customer's service and use, There was a inconvenience to replace the entire insole attached.

As an improvement on this, if a general adhesive is pre-coated on the bottom of the upper (top) and then coated with a coated paper to prepare a sticker type upper, the coated paper can be removed and attached directly to the insole when the upper is to be attached to the upper surface of the insole. Utility Model Registration No. 20-0310656.

However, the upper according to No. 20-0310656 is for attachment, and although it may be possible to detach the upper from the insole by applying a physical force, the upper insole is removed because it is difficult to cleanly remove the adhesive from the upper surface of the insole. There is a disadvantage of uneven top surface. In particular, adhesive residues that are not completely removed can result in aesthetic discomfort as well as discomfort in wearing the insole.

In addition, in this case it is not possible to reuse the detached upper. Ordinary sticky adhesives, once adhered, may retain their adhesion, but do not regain adhesion after they have been detached. This is because it is difficult to remove the material combined with the adhesive. Therefore, foreign matter remains in the adhesive, and the adhesive strength is lost.

On the other hand, if time passes or the temperature rises, the adhesive flows down, and it is difficult to exclude the possibility of adhering to the skin to such an extent that the soles are uncomfortable.

The present invention provides a removable upper insole inserted into the shoe according to the present invention to solve the problems of the prior art: a plastic configured to include an arch support projecting upwardly curved to support the arch portion of the wearer's foot Insole body of material; And an upper detachable upper on the upper surface of the insole body, and a selective detachable member is coated on the upper lower surface.

In addition, when a foreign material is present in the selective detachable member, it is preferable that the foreign material can be removed by using water.

In addition, the selective detachable member is preferably made of polyurethane gel.

Moreover, it is preferable that the hardness of a polyurethane gel is 30C-35C.

In addition, the polyurethane gel is preferably made by mixing a polyol and methylene diphenyl 4,4'- diisocyanate (methylene diphenyl 4,4'-diisocyanate (MDI)) in a weight ratio of 100: 20 to 100: 30.

In addition, the polyurethane gel is preferably formed by mixing a polyol and toluene diisocyanate (TDI) in a weight ratio of 100: 20 to 100: 30.

In addition, the selective detachable member is preferably further applied to the heel area of the lower surface of the insole body.

On the other hand, the selective detachable upper according to the present invention is coated with a selective detachable member on the lower surface, it is possible to detachable to the plastic insole to be inserted into the shoe.

In addition, when a foreign material is present in the selective detachable member, it is preferable that the foreign material can be used by removing the foreign material.

Moreover, it is preferable that the hardness of a polyurethane gel is 30C-35C.

In addition, the polyurethane gel is preferably formed by mixing a polyol and methylene diphenyl 4,4'- diisocyanate in a weight ratio of 100: 20 to 100: 30.

In addition, the polyurethane gel is preferably formed by mixing a polyol and toluene diisocyanate in a weight ratio of 100: 20 to 100: 30.

The upper detachable insole and the optional detachable upper according to the present invention, due to the selective detachable member, are capable of being detached when a physical force is applied while being stably bonded to the insole body of plastic material, and the detachable selective detachable member is also detachable. Even when foreign matter is attached to the upper surface, the foreign matter can be easily removed by washing with water.

In addition, the upper surface of the conventional rigid plastic insole is attached to improve the wearing comfort, and at the same time, the upper may be attached to the body of the insole, which varies in color, shape, etc. according to taste or purpose. That is, a user who cannot use a multi-layered insole due to high instep or a user who wants or does not want a hard plastic insole with a bottom surface can use it while removing or attaching an upper according to a preference.

1 is a perspective view showing the attached form of one embodiment of the upper detachable insole according to the present invention,

Figure 2 is a perspective view showing a detached form of one embodiment of the upper detachable insole according to the present invention,

3 is a plan view according to an embodiment of an upper detachable insole according to the present invention;

Figure 4 is a bottom view according to an embodiment of the upper detachable insole according to the present invention.

5 is a graph comparing the adhesion of Examples 1 to 4 and Comparative Examples 1 and 2 according to the present invention.

＊＊＊ Explanation of Reference Numbers ＊＊＊

10: upper detachable insole

11: upper

12: insole body

13, 14: Optional detachable member

15: arch support

Matters relating to the operational effects including the technical configuration for the above object of the upper detachable insole and the optional detachable upper are inserted into the shoe according to the present invention by the detailed description with reference to the drawings below. Will be clearly understood.

1 is a perspective view showing the attached form of one embodiment of the upper detachable insole according to the present invention, Figure 2 is a perspective view showing a detached form of one embodiment of the upper detachable insole.

The upper detachable insole 10 according to an embodiment includes an insole body 12 and an upper 11 covering an upper surface of the insole body 12 according to the shape of the sole.

Insole body 12 includes an arch support 15 that curves upwardly to support the arch portion of the wearer's foot. Arch support portion 15 supports the sole of the wearer when walking, and serves to support the load.

Insole body 12 may use any plastic material currently available, depending on the application. For example, nylon, polypropylene (PP), glass fiber, composite plastic mixture and the like are mainly used. The composite plastic mixture is used by mixing polybutylene terephthalate (PBT) and polyethylene terephthalate (PET), or a mixture of nylon and glass fiber, for example.

The insole body 12 illustrated in the figure is a 3/4 cup (3/4 cup) corresponding to about 3/4 of the full cup (full cup) according to the shape of the entire heel from the toe, but is not limited thereto. Similarly, the upper 11 according to an embodiment is not limited to the 3/4 cup, but may be freely manufactured as a full cup upper according to a user's preference or convenience.

Insole body 12 is manufactured by plastic mold technology. General plastic molding methods vary widely, but are roughly classified into injection molding, compression molding, trans molding, thermoforming, blow molding, film blowing, extrusion molding, calendering, and fiber spinning. Among them, injection molding, compression molding, transfer molding, and rotational molding are a method of pushing and molding a plastic material into a closed mold, that is, a cavity formed between two molds closed to form a molded article.

In one embodiment, 3/4 cup insole body 12 having a sole shape is manufactured by mixing polybutylene terephthalate (PBT) and polyethylene terephthalate (PET) or by injection molding nylon series.

On the other hand, the upper 11 is attached to the upper surface of the insole body 12 of the plastic material to provide a soft and soft cushioning. Therefore, as the material of the upper 11, for example, a shock-absorbing material having excellent elastic restoring force, such as polyurethane (Polyurethane), EVA (Ethylene Vinyl Acetate), or latex, is used.

The material of the upper 11 may be used any material that can be employed by those skilled in the art as a material capable of performing a shock-absorbing function by excellent elastic restoring force, it is not limited to the material illustrated here.

In one embodiment, 3/4 cup upper 11 of the sole shape is manufactured using the polyurethane sheet used in the form of a sheet or foam. As described above, it is not limited to the 3/4 cup. Instead of polyurethane, EVA, which is mainly used for shoes or insoles, can be used to make uppers that are lighter than polyurethane. In case of using EVA, multi-layer EVA is used after making a sheet form by attaching various kinds of sheets of EVA.

On the other hand, the selective detachable member 13 is applied to the lower surface of the upper 11.

The optional detachable member 13 is strongly attached to the insole body 12 made of a plastic material, and when a physical force is applied to the upper 11, the upper 11 is removed from the insole body 12 as shown in FIG. 2. Can be dislodged.

The selective detachable member 13 means any means for enabling detachment such as an adhesive, an adhesive means, an adhesive mechanism, and the like, and is not limited to an adhesive that provides only a semi-permanent detachable function.

In addition, the selective detachable member 13 may be selectively attached and detached only to a material having a smooth surface, such as plastic, and may not be attached to a material whose surface is not smooth. For example, the plastic insole body 12 has a strong adhesive force, but does not have an adhesive force to the human skin.

As a semi-permanent selective detachable member capable of providing an attached state and a detached state, for example, a polyurethane gel may be used to control adhesion by mixing two different types of polyurethane and a curing agent. When two different types of polyurethane and hardener are mixed, the gel becomes viscous and becomes viscous. Thus, it becomes a polyurethane gel having adhesive strength that can be semi-permanently removable as well as attached.

In particular, when the upper 11 is separated from the insole body 12, foreign matter, for example, dust, may adhere to the upper surface of the selective detachable member 13. However, since the polyurethane gel has a strong water resistance, it is restored to the original adhesive strength without changing the adhesive strength even when washed in water, and has the property of removing only foreign substances.

The upper 11 to which the selective detachable member 13 is applied may be strongly attached to the insole body 12 made of a plastic material to provide a fixed position when walking, and at the same time, by applying physical force, Can be removed as

In addition, the upper 11 to which the selective detachable member 13 is applied may be attached to and detached from both the insole body 12 according to the present invention and any plastic insole.

After applying the adhesive for EVA on the lower surface of the upper (11) made of a shock-absorbing material and then apply the optional detachable member (13). The optional detachable member 13 is strongly attached to the lower surface of the upper 11 and does not detach even when a physical force is applied.

Since the selective detachable member 13 is attached to the insole body 12 of the plastic material and can be detached by applying a physical force, various uppers can be provided to one insole according to the user's taste or functional requirements. In addition, even if the detachable, repeated attachment and detachment of the detachable member 13 maintains the adhesive force, the upper can be used semi-permanently in the insole.

In one embodiment, the selective detachable member 13 made of polyurethane gel is stably adhered to the top of the insole of the plastic material, and can be easily detached by applying a physical force according to the user's request. That is, the upper can be attached to the upper surface of the insole with a strong adhesive force, even if the removable upper can provide a fixed position without any obstacle to walking.

In addition, if the user needs to replace the upper, for example, if the upper is worn, wants to replace according to function, or want to replace according to taste, the upper can be easily removed from the plastic insole at any time.

In addition, even if the upper is removed from the insole, the polyurethane gel does not remain on the surface of the insole and can remain clean as before attachment. Therefore, the user may be provided with a plurality of uppers according to taste or function and applied to one plastic insole, and the upper may be used semi-permanently.

In one embodiment, a polyol (polyol) and methylene diphenyl 4,4'- diisocyanate (methylene diphenyl 4,4'-diisocyanate (MDI) high-speed mixing in a weight ratio of 100: 20 to 100: 30 weight to have an adhesive gel Polyurethane in shape is obtained. Polyurethane gels with different hardness and adhesion can be obtained depending on the ratio of MDI. It will also be apparent to one skilled in the art that common hardeners and / or catalysts may be added.

On the other hand, toluene diisocyanate (TDI) may be used instead of MDI. At this time, the mixing ratio of the polyol and TDI is preferably 100: 20 to 100: 30 weight ratio. It will also be apparent to one skilled in the art that common hardeners and / or catalysts may be added.

When the ratio of MDI or TDI in the mixing ratio is less than 20 weight ratio, the adhesion may be stronger, but when the adhesion is too strong, it is difficult to function as the selective detachable member 13 according to the present invention.

On the other hand, when the ratio of MDI or TDI of the mixing ratio is greater than 30 weight ratio, the adhesive force is reduced, it is difficult to provide a stable position on the upper surface of the insole of the plastic material.

In addition, the selective detachable member 13 is preferably in the hardness of 30C to 35C. The hardness is measured by using a rubber / plastic hardness tester used when measuring the hardness of insole hard rubber, hard plastic, ebonite, etc., is a rubber / plastic hardness tester of Asuka Co., Ltd. Measured through

The upper surface of the upper can be printed a desired trademark, pattern, etc., or a colored cloth can be attached, and the polyurethane gel is applied to the bottom surface of the upper with an optional detachable member 13. Polyurethane gel is a mixture of two kinds of polyurethanes with different properties and a curing agent to make a gel state and uses adhesive properties. When the upper surface of the upper surface is bonded and a thin layer of polyurethane gel is applied, The sides are permanently attached to the upper material. A polyurethane gel is also applied to the sole heel area of the bottom surface of the insole body. The other side of the polyurethane gel may then be physically attached to the plastic insole body.

3 is a plan view according to an embodiment of an upper detachable insole according to the present invention, and FIG. 4 is a bottom view according to an embodiment of the upper detachable insole.

Applying the optional detachable member 14 to the heel region of the lower surface of the upper detachable insole 10 has a strong adhesive force as described above with respect to the insole body 12 and thus permanently insole body 12. Keep attached to Thus, the upper detachable insole 10 may be attached to the shoe to provide a fixed position.

On the other hand, as shown in Figure 4, even when the upper 11 and the insole body 12 uses a 3/4 cup, in order to make it easy to remove the upper 11, the upper ( Can be made slightly longer.

Hereinafter, the Example and comparative example for measuring the adhesive force of the selective detachable upper which concerns on this invention are demonstrated.

[실시예]EXAMPLE

Adhesion was measured by manually attaching and detaching a detachable upper by hand on a unit area of 20 mm × 155 mm of a plastic specimen of Pebax 7033 grade made of poly ether black amide (Poly Ether Black Amides). The higher the load value, the higher the accuracy of the load specimen. Therefore, the adhesion area was fixed.

Once adhered by hand, allowed to stand at room temperature for 24 hours, and then detached at a rate of 100 mm / min using an Instron 5566 (Bluehill NIKE version) device through the NIKE test method (G80 WB adhesion). Since there is no known method for measuring the adhesive force, a method commonly used in the actual shoe manufacturing industry was adopted, and the experiment was commissioned by Framas Korea Asan Lab.

First, Examples 1 and 2 are uppers coated with a polyurethane gel having a viscosity of 30C, and Examples 3 and 4 are uppers coated with a polyurethane gel having a viscosity of 35C. On the other hand, Comparative Examples 1 and 2 are uppers coated with a polyurethane gel having a viscosity of 40C.

The measured hardness is measured by using a rubber / plastic hardness tester used to measure the hardness of insole hard rubber, hard plastic and ebonite, etc., and is known as rubber / plastic hardness tester (ASKER company rubber / It is the value measured using the plastic hardness tester. That is, 30C means C type 30.

Table 1 shows the maximum load, average adhesive strength, and elongation for Examples 1 to 4, Comparative Examples 1 and 2 above. Moreover, the load / width (Kg _f / cm) according to extending | stretching (mm) which shows the extension degree is shown in FIG.

Table 1

	Adhesion (Kg _f / cm)
	Load	Load / width	Average adhesion	Elongation (mm)
Example 1	2.367	1.183	0.84-1.24	170
Example 2	2.486	1.243	0.84-1.24	170
Example 3	1.577	0.788	0.5 to 0.8	150
Example 4	1.613	0.806	0.5 to 0.8	150
Comparative Example 1	1.155	0.577	0.28-0.57	123
Comparative Example 2	0.879	0.439	0.28-0.57	123

From FIG. 5 and Table 1, it was confirmed that the difference in adhesive strength was caused by the difference in viscosity. Examples 1 and 2 with low viscosity show the average adhesive strength of 0.84-1.24 (Kg _f / cm) which is the highest adhesive force. That is, in Examples 1 and 2, since the viscosity is low, the surface tension is low, and the elongation is about 170 mm, the tendency to maintain the adhesion state with the specimen is strong. On the other hand, the comparative example shows the adhesive strength of 0.28 to 0.57 (Kg _f / cm) on average, and the elongation is also about 123 mm low.

That is, by using a polyurethane gel having a viscosity of about 30C to 35C as a selective detachable member, it is possible to manufacture an upper detachable insole that can be detachable as necessary while increasing the adhesive force to the insole body of a plastic material.

Therefore, the upper detachable insole and the optional detachable upper according to the present invention, due to the selective detachable member, are capable of being detached when a physical force is applied while being stably bonded to the insole body of plastic material, and the detachable selective detachable Even if foreign matter is attached to the upper surface of the possible member, the foreign matter can be easily removed by washing with water, and thus the upper can be used semi-permanently in the insole.

Claims

In the upper detachable insole inserted inside the shoe,

An insole body of plastic material configured to include an upwardly curved arch support to support the arch portion of the wearer's foot; And

It includes a removable upper on the upper surface of the insole body,

An upper detachable insole, characterized in that the selective detachable member is coated on the upper lower surface.
The method of claim 1,

The upper detachable insole, characterized in that when the foreign matter is present in the selective detachable member, the foreign material can be used by removing the foreign matter.
The method of claim 2,

The optional detachable member is an upper detachable insole, characterized in that made of polyurethane gel.
The method of claim 3, wherein

Upper polyurethane detachable insole, characterized in that the hardness of 30C to 35C.
The method of claim 4, wherein

The polyurethane gel is an upper detachable insole, comprising a polyol and methylene diphenyl 4,4'-diisocyanate (methylene diphenyl 4,4'-diisocyanate: MDI) in a weight ratio of 100: 20 to 100: 30 .
The method of claim 4, wherein

The polyurethane gel is an upper detachable insole, characterized in that the polyol and toluene diisocyanate (TDI) by mixing in a weight ratio of 100: 20 to 100: 30.
The method according to any one of claims 1 to 6,

The upper detachable insole, characterized in that the optional detachable member is further applied to the heel area of the lower surface of the insole body.
In the optional detachable upper,

The upper may be selectively or detachably coated on the lower surface of the upper surface of the shoe, so that the upper surface of the insole made of plastic is inserted into the shoe, or selectively detachable on the inner surface of the shoe. Upper available.
The method of claim 8,

When there is foreign matter in the selective detachable member, the selective detachable upper, characterized in that can be used by removing the foreign matter with water.
The method of claim 9,

The selective detachable upper is characterized in that the removable detachable upper consisting of a polyurethane gel.
The method of claim 10,

Selective detachable upper, characterized in that the hardness of the polyurethane gel is 30C to 35C.
The method of claim 11,

The polyurethane gel is selectively detachable upper, characterized in that the polyol and methylene diphenyl 4,4'- diisocyanate by mixing in a weight ratio of 100: 20 to 100: 30.
The method of claim 11,

The polyurethane gel is selectively detachable upper, characterized in that the polyol and toluene diisocyanate by mixing in a weight ratio of 100: 20 to 100: 30.