JPH0122494Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial use) This invention uses cork grains to provide heat retention, breathability,
This relates to a shoe insole that has excellent elasticity and durability, fits the shape of the sole of the foot, and is comfortable to wear.

(Conventional technology) Cork grains have excellent heat retention, breathability, and elasticity.
It is a good material for shoe insoles.

However, conventional shoe insoles made of cork grains molded into sheets tend to break due to cracks occurring between the cork grains due to bending during use, and the cork grains are brittle, resulting in poor durability. It had the drawback of lacking wear resistance.

Furthermore, water accumulates between the cork grains of the sheet, impairing the comfort of the wearer.

In addition, since the foot shape is determined at the manufacturing stage of the shoe insoles,
None of them fit perfectly to each individual's sole shape.

(Problem that the invention aims to solve) An insole that does not cause moisture to seep into the surface and impair comfort, has excellent flexibility, durability, abrasion resistance, and elasticity, and that fits the shape of the sole of the foot. It is in the point of providing.

(Means for solving problems) The insole of the present invention has the following structure.

From the surface: surface material h, mesh material m, substrate k
A room-temperature plastic plate j is arranged on the forefoot part a between the mesh material m and the substrate k, and a thermoplastic plate n is arranged on the heel part b, so that they are laminated and integrated.

The room-temperature plastic plate j is made of relatively coarse cork grains with a particle size of about 2 to 4 mm, nonwoven fabric fibers, and a binder, and is a felt-like body that is plastic at room temperature and has excellent water absorption and air permeability.

The thermoplastic board n is made by mixing relatively fine cork grains with a particle size of about 1 to 2 mm, nonwoven fabric fibers, and a binder, and has thermoplasticity and is rich in air permeability and elasticity.

The substrate k consists of relatively coarse cork grains with a grain size of about 2 to 4 mm, nonwoven fabric fibers, and a binder,
It does not soften at temperatures from room temperature to around 50℃, and has elasticity.
It has excellent wear resistance and bending resistance.

Then, the thermoplastic plate n is processed into a desired foot shape by heating and then used.

(Example) As shown in FIG. 1, the shoe insole according to the present invention has the following features:
A surface material h, a mesh material m, a room temperature plastic plate j, a thermoplastic plate n, and a substrate k are integrally laminated in order from the surface.

As shown in Fig. 1, the surface material h is cut approximately into the shape of a foot and has a large number of small holes 1 drilled in areas where sweat, etc., tends to accumulate, and the material is leather, synthetic leather, saran, or cotton cloth. The material is not particularly limited as long as it has excellent air permeability and abrasion resistance, such as nonwoven fabric.

As shown in Fig. 2, the mesh material m is made of a fabric with no water absorption, high breathability, and high elasticity.
The material is not particularly limited, but it is preferably made of vinylidene chloride.

The room-temperature plastic board j is a felt-like body that is plastic at room temperature, has excellent air permeability, and has better water absorption than the thermoplastic board n and the substrate k, which will be described later.As shown in FIG. Cork grains 3 having a relatively coarse particle size of about 4 mm, nonwoven fabric fibers 4, and a binder are mixed, formed into a plate shape, and cut into a foot shape.

The fibers 4 for nonwoven fabrics may be any fiber that can be uniformly mixed with the cork grains 3 and the binder, and are not particularly limited, but nylon fibers for nonwoven fabrics are preferable.

The binder may be any material as long as it is plastic at room temperature and has excellent adhesive strength, and its material is not particularly limited, but it may be made mainly of ultra-low hardness ethyl vinyl alcohol (EVA) resin. is preferred.

The method for manufacturing this room-temperature plastic plate j will be explained using the following blending ratios.

Ultra-low hardness EVA resin 26% Natural rubber 8% Nylon fiber 43% Cork grains 23% After thoroughly kneading the ultra-low hardness EVA resin, natural rubber, and various additives on a roll machine, approximately 25 mm long nylon fiber and cork are mixed. Add the grains one by one and mix evenly.

This kneaded material is rolled to a predetermined length, width, and width using a rolling mill to form a sheet.

This sheet-like material is placed in a heating machine, expanded to a predetermined thickness, and then allowed to cool to form a felt-like room-temperature plastic plate j having a specific gravity of 0.1 to 0.4.

The thermoplastic plate n has thermoplasticity, is highly breathable and elastic, and has a particle size of 1 to 2 mm as shown in Figure 4.
Cork grains 3 having a relatively fine particle size, nonwoven fabric fibers 4, and a thermoplastic binder are mixed, formed into a plate shape, and cut into a foot shape.

The fibers 4 for nonwoven fabrics may be any fiber that can be uniformly mixed with the cork grains 3 and the binder, and are not particularly limited, but nylon fibers for nonwoven fabrics are preferable.

The binder may be any thermoplastic synthetic resin that softens at about 50°C or higher and hardens at about 50°C or lower.

This is because if a binder that softens at too high a temperature is used, the thermoplastic plate n must be heated to a high temperature when taking the shape of the sole. This is because there is a risk of getting burned.

In addition, if a binder that softens at too low a temperature is used, the insole will deform during use, resulting in problems such as the foot shape collapsing, which is undesirable.

Although the binder is not particularly limited,
Synthetic resins such as synthetic rubber such as EVA, polyethylene, urethane, and isoprene, natural rubber, etc. are used singly or in combination.

The method for manufacturing this thermoplastic plate n will be explained using the following blending ratios.

EVA resin 32% Natural rubber 16% Nylon fiber 20% Cork grains 32% Cork grains 3, nonwoven fibers 4, a binder consisting of EVA resin and natural rubber are thoroughly mixed, molded by heating and pressurizing, and cooled. , curing the binder;
A plate-shaped thermoplastic plate n is formed.

The substrate k has excellent abrasion resistance, bending resistance, and elasticity, and is made by mixing relatively coarse cork particles 3 with a particle size of about 2 to 4 mm, nonwoven fabric fibers 4, and a binder, as shown in FIG. It is formed into a plate shape with a thickness of about 4 to 5 mm, and cut into the shape of a foot.

The fibers 4 for nonwoven fabrics may be any fiber that can be uniformly mixed with the cork grains 3 and the binder, and are not particularly limited, but nylon fibers for nonwoven fabrics are preferable.

The binder may be a resin-like material that does not soften or change at temperatures ranging from room temperature to about 50°C, and the material is not particularly limited, but natural rubber, synthetic rubber, EVA, and urethane may be used. Those having excellent abrasion resistance and elasticity are used alone or in combination.

The method for manufacturing this substrate k will be explained using the following blending ratios.

Natural rubber 42% Hardening agent 8% Nylon fiber 25% Cork grains 25% A binder consisting of 3 cork grains, 4 fibers for nonwoven fabric, natural rubber, and a hardening agent is thoroughly mixed, heated and pressurized to shape, and cooled. , the binder is cured to form a plate-shaped substrate k.

Next, a method for manufacturing a shoe insole according to the present invention will be explained.

Apply adhesive in a line on one side of the board k, adhere the room temperature plastic plate j, apply adhesive in a line on the surface of the room temperature plastic plate j, adhere the thermoplastic plate n, and Adhesive is applied linearly to the surface of the plastic plate n, a mesh material m is adhered thereto, and these are cut into a foot shape.

Apply adhesive in a line on the surface and periphery of the footprint,
A surface material h is adhered to cover these surfaces and peripheries to form an insole material A as shown in FIG.

This insole material A is heated to about 50° C. in a heater B such as an oven at a store or the like to soften and deform the thermoplastic plate n.

As shown in FIG. 6, the orderer's foot D is placed on the insole material A in this state, the sole of the foot D is shaped, and the insole material A is cooled and hardened to form an insole.

At this time, not only the thermoplastic plate n but also the room-temperature plastic plate j deforms due to the weight so as to fit the shape of the sole of the foot.

In the above embodiment, the foot-shaped cold plastic plate j and the thermoplastic plate n are laminated and integrated. It may be arranged in any one of three ways: one divided into the main parts of part a and the heel part b, and the other, as shown in FIG. 8, only the forefoot part a.

Further, the thermoplastic plate n may be disposed in one of two ways, either in the shape of a foot or only in the heel part b, as shown in FIGS. 9 and 10.

Therefore, the room-temperature plastic plate j and the thermoplastic plate n can be arranged in any combination.

As an example other than the above embodiment, as shown in FIGS. 11 and 12, a mesh material m and a substrate k are used.
A room-temperature plastic plate j is placed on the forefoot part a between the heel part b.
A thermoplastic plate n may be disposed on the surface and the thermoplastic plate n may be laminated and integrated.

In the above embodiment, the heel portion of the thermoplastic plate n was explained as having a flat heel portion, but as shown in FIG. good.

In the above embodiment, the entire surface material h is made of the same material, but as shown in FIGS. You may use whatever you have on.

In the above embodiment, when bonding the mesh material m etc. to the substrate k, the adhesive was applied in a linear manner. , may be mesh-like or dot-like, and is not particularly limited.

In the method of manufacturing the shoe insole of the above embodiment, when the substrate k, thermoplastic board n, room temperature plastic board j, mesh material m, etc. are laminated and integrated, even if these are laminated after being cut into a foot shape, there is no problem in laminating these. After that, it may be cut into a footprint, and the order of the lamination work and cutting work is not particularly limited.

In the embodiment described above, the surface material h was arranged on the front side of the substrate k, but a material of the same quality as the surface material h may also be bonded to the back surface of the substrate k.

In the above embodiment, the surface material h is also applied to the peripheral edge of the shoe insole.
Although the explanation has been given using an example in which the surface material h is disposed on the insole material A, adhesion of the surface material h to the peripheral edge portion may be omitted and the surface material h may be disposed only on the surface of the insole material A.

In the above embodiment, the substrate k, the mesh material m, the surface material h, etc. are laminated together with adhesive, but it is also possible to use adhesive, sewing, heat welding, etc. alone or in combination to integrate the lamination. It's okay.

In the above example, the temperature at which the insole material A is heated is
Although the explanation has been given using the example of 50°C, it is sufficient that the temperature is such that when the foot D is placed on it, the thermoplastic plate n of the insole material A is softened and deformed without causing burns.

In other words, the time it takes to place foot D on heated insole material A is only a few seconds, the temperature that feels hot varies from person to person, and adjustments such as wearing socks or increasing the thickness of the sock material are necessary. The temperature at which the insole material A is heated is as follows.
There are no particular limitations, but for safety reasons,
This is a guideline.

(Operation and effect of the invention) The shoe insole according to the invention has a mesh material between the room-temperature plastic plate j, the thermoplastic plate n, and the substrate k, which are made of cork grains, nonwoven fabric fibers, and a binder, and the surface material h. m
Since the cork particles are arranged and laminated integrally, the water accumulated between the cork grains does not ooze out onto the surface of the surface material h and impair the comfort of the wearer.

The shoe insole of the present invention has excellent wear resistance because the surface material h is laminated thereon.

The shoe insole according to the present invention includes a mesh material m between a room temperature plastic plate j, a thermoplastic plate n, and a substrate k made of cork grains, nonwoven fabric fibers, and a binder, and a surface material h.
are arranged and laminated integrally, so the cork grains are uniformly dispersed between the nonwoven fabric fibers, the cork grains and the nonwoven fabric fibers, the fibers, the room temperature plastic board j, the thermoplastic board n, the substrate k, The mesh material m and the surface material h are firmly adhered to each other and have excellent flexibility and durability.

The shoe insole of the present invention has a mesh material m arranged between a room-temperature plastic board j, a thermoplastic board n, and a substrate k made of cork grains, nonwoven fabric fibers, and a binder, and a surface material h, and is integrally formed. Because it is laminated, it has excellent heat retention, breathability, and elasticity.

The shoe insole of the present invention is equipped with a room-temperature plastic plate (J) or a thermoplastic plate (N), so it can be processed into the desired foot shape, fits snugly to the shape of the sole, and has a strong grip. be.

Since the insole of the present invention is equipped with a thermoplastic plate, it fits perfectly to the shape of each individual's sole, and has excellent shape retention, flexibility, and durability.

The shoe insole according to the present invention is made by integrally laminating the room temperature plastic board j, the thermoplastic board n, and the substrate k, which are made of cork grains, nonwoven fabric fibers, and a binder, and have different properties. This eliminates the drawbacks of cork grains when they are made into a sheet, and fully demonstrates the characteristics of cork grains.

The shoe insole of the present invention has excellent cushioning properties and is comfortable to use even when used in shoes such as sports shoes with uneven soles and severe bending.

[Brief explanation of the drawing]

Figure 1 is a surface view showing the laminated state of the shoe insole according to the present invention, Figure 2 is a partially enlarged view of the mesh material according to the present invention, and Figure 3 is a partially enlarged view of the room-temperature plastic plate according to the present invention. 4 is a partially enlarged view of a thermoplastic plate according to the present invention, FIG. 5 is a partially enlarged view of a substrate according to the present invention,
Figure 6 is an explanatory diagram showing how to use the insole material according to the present invention, Figure 7 is a surface view of the room-temperature plastic plate according to the present invention divided into a forefoot part and a heel part, and Figure 8 is an explanatory diagram showing how to use the insole material according to the present invention. A surface view of the room-temperature plastic plate according to the invention with only the forefoot part, FIG. 9 is a side view of the thermoplastic plate of the entire foot shape according to the invention, and FIG. 10 is a thermoplastic plate of only the heel part according to the invention. A side view of the board, FIG. 11 is a surface view showing the laminated state of another shoe insole according to the present invention, and FIG. 12 is a side view of the board.
Partially omitted enlarged sectional view taken along the - line in the figure, 1st
Fig. 3 is a partially omitted enlarged cross-sectional view of another thermoplastic plate according to the present invention, Fig. 14 is a surface view of another surface material according to the present invention, and Fig. 15 is a partially omitted view taken along the - line in Fig. 14. It is an enlarged sectional view. A... Insole material, B... Heater, D... Feet, a
...Forefoot, b...Heel, h...Surface material, m...
Mesh material, k...Substrate, j...Room temperature plastic plate, n
...Thermoplastic plate, 1...Small hole, 2...Sewing thread, 3...
Cork grains, 4... Fiber for nonwoven fabric, 5... Concavity, 6
...Front end, 7...Fabric.

Claims (1)

[Claims for Utility Model Registration] 1. A surface material h, a mesh material m, and a substrate k are laminated in order from the surface, and a room temperature plastic plate j and a thermoplastic plate n are arranged between the mesh material m and the substrate k. , is formed by laminating and integrating, and the room temperature plastic plate j has a particle size of 2 to 4.
It is a felt-like body that is made of relatively coarse cork grains of approximately mm size, nonwoven fabric fibers, and a binder, and has plasticity at room temperature and has excellent water absorption and air permeability. It is made by mixing relatively fine cork grains of about 2 mm, nonwoven fabric fibers, and a binder, and has thermoplasticity, breathability,
It is highly elastic, and the substrate k has a particle size of 2 to 4.
It is made of relatively coarse cork grains of about mm size, nonwoven fabric fibers, and a binder, and does not soften at room temperature and has abrasion resistance and bending resistance.
An insole characterized by processing the thermoplastic plate n into a desired foot shape by heating. 2 Utility model registration claim No. 1 in which a room temperature plastic plate j is arranged on the forefoot part a between the mesh material m and the board k, and a thermoplastic plate n is arranged on the heel part b to form a laminated unit.
Shoe insoles as described in section.