JPH0122492Y2 - - 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 and fits the shape of each individual's sole.

(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 formed into a sheet have the disadvantage that cracks occur between the cork grains due to bending during use, making the sheet easy to break and lacking in durability.

Although cork grains have high elasticity, they have problems in shape retention and recovery in areas where large forces are repeatedly applied.

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

(Problems to be solved by the invention) The aim is to provide an insole that fits perfectly to the shape of each individual's sole, has shape retention and recovery properties, and has excellent flexibility and durability. .

(Means for solving the problems) The shoe insole of the present invention has the following configuration. Relatively coarse cork particles having a particle size of about 2 to 4 mm, nonwoven fabric fibers, and a binder are mixed and molded to form a foot-shaped substrate 1.

A buffer piece 2 is disposed on the front foot part a and the heel part b of the base plate 1 at the parts where the weight is most affected.

Relatively fine cork grains with a particle size of about 1 to 2 mm,
Thermoplastic board 3 that can be softened and deformed by heating by mixing and molding nonwoven fabric fibers with a thermoplastic binder.
is formed into the shape of a foot-shaped front step a.

The thermoplastic plate 3 is laminated and integrated on the surface of the front part a of the substrate 1 to form an insole material B.
A surface material 4 is adhered to the surface of the.

The thermoplastic plate 3 of this insole material B is processed into a desired foot shape by heating.

(Example) As shown in FIG. 1, the shoe insole according to the present invention has the following features:
A thermoplastic board 3 is placed on the front step a of the board 1 cut into the shape of a foot.
The surface material 4 is adhered to the surface of the insole material B formed by adhering the insole material B, and as shown in FIG. 3 was softened and deformable, a foot was placed on this insole material B, the shape of the sole of the forefoot part a was taken, and the material was cooled and hardened.

As shown in FIGS. 3 to 5, the substrate 1 is made by mixing relatively coarse cork grains 7 with a particle size of about 2 to 4 mm, nonwoven fabric fibers 8, and a binder, forming the mixture into a plate shape, and forming it into a foot shape. The installation parts 5 and 6 are formed by cutting through holes in the shape of an inverted truncated cone in the parts of the forefoot part a and the heel part b that bear the most weight.

The nonwoven fabric fiber 8 may be any material as long as it can be mixed uniformly with the cork grains and the binder, and is not particularly limited, but nylon fiber is preferable.

The material of the binder is not particularly limited as long as it is a synthetic resin that does not soften or change at a temperature of about 50°C.

As shown in FIG. 6, the buffer piece 2 is harder than the substrate 1 and is made of urethane, rubber, etc. with excellent wear resistance.
It has elasticity and has a truncated conical shape with the same thickness as the substrate 1.

As shown in FIGS. 7 to 9, the thermoplastic board 3 is made by mixing relatively fine cork particles 10 with a particle size of about 2 to 4 mm, nonwoven fabric fibers 8, and a thermoplastic binder. It is a plate-shaped body that is formed into a plate shape and cut into the shape of the forefoot part a of the foot, and has an inclined part 9 inclined toward the heel part b.

The fibers for the nonwoven fabric are the same as those used for the substrate 1.

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 3 must be heated to a high temperature, and there is a risk of burns.

Furthermore, if a binder that softens at too much foot temperature is used, the insole may deform during use.

In the above embodiment, the substrate 1 is made of cork grains, nonwoven fibers, and a binder, but it may be made of felt.

In the above embodiment, the adhesive was applied in a linear manner when bonding the substrate 1, thermoplastic plate 3, and surface material 4. The method of coating may be in the form of a mesh or dots, and is not particularly limited.

In the above embodiment, the surface material 4 is provided on the surface of the insole material B.
Although the explanation has been given using an example in which the surface material 4 is bonded, the insole material B consisting of the substrate 1, the buffer piece 2, and the thermoplastic plate 3 may be used as is by omitting the surface material 4.

In the above embodiment, the surface material 4 is provided on the surface of the insole material B.
Although the explanation has been given using an example in which the insole material B is bonded, a material of the same quality as the surface material 4 may also be bonded to the back surface of the insole material B.
In the above embodiment, an example was explained in which the surface material 4 was also bonded to the peripheral edge of the insole material B, but the bonding of the surface material 4 to the peripheral edge was omitted, and the surface material was applied only to the surface of the insole material B. 4 may be glued.

In the above embodiment, the buffer pieces 2 were fitted into the installation parts 5 and 6 of the substrate 1 and bonded with adhesive, but the buffer pieces 2 prepared in advance were placed in the mold for forming the substrate 1. Then, a mixture of cork grains, nonwoven fabric fibers, and a binder is placed in this mold and molded to form the cushioning piece 2.
and the substrate 1 may be integrated.

In the above embodiment, an example was explained in which the substrate 1 and the thermoplastic plate 3 were bonded together with an adhesive. A mixture of cork grains, nonwoven fabric fibers, and a binder may be placed in a mold, heated and molded, and cooled and hardened to form an insole material B in which the thermoplastic plate 3 and the substrate 1 are integrated.

In the above example, the temperature at which the insole material B is heated is
Although the explanation has been given using the example of 50° C., the temperature may be as long as the temperature does not cause burns when the foot D is placed on it and the thermoplastic plate 3 of the insole material B softens and deforms.

In other words, it takes only a few seconds to place the foot D on the heated insole material B, the temperature that feels hot varies from person to person, and adjustments such as wearing socks or making the material of the socks thicker are necessary. The temperature at which the insole material B 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 of the invention has a cushioning piece 2 which is harder and more elastic than the substrate 1 and is arranged in the part of the substrate 1 that bears the most weight. A thermoplastic plate 3 that can be softened and deformed by heating is formed by mixing and molding a binder having Since the thermoplastic plate 3 of the padding material B is processed into the desired foot shape by heating, it fits perfectly to the sole shape of each individual, has shape retention and recovery properties, and has excellent flexibility and durability. It is something.

In the insole of the present invention, a thermoplastic board 3 made of cork grains and nonwoven fibers with a thermoplastic binder is processed into the desired foot shape by heating, so it is tightly fitted to the sole shape and gripped. It is powerful.

In the shoe insole of the present invention, the cushioning piece 2, which is harder and more elastic than the base plate 1, is arranged at the part of the base plate 1 that is most affected by the weight, so this part does not flatten and can be easily maintained. It has excellent shape, restorability, and durability.

The shoe insole of the present invention has excellent wear resistance because the surface material 4 is laminated.

In the shoe insole of the present invention, the thermoplastic plate 3 having non-woven fibers is laminated on the substrate 1, so that the cork grains are uniformly dispersed between the non-woven fibers, and the cork grains, non-woven fibers, and non-woven fibers are uniformly dispersed. Fibers strongly adhere to each other,
Excellent flexibility and durability.

[Brief explanation of the drawing]

FIG. 1 is a surface view of the insole material of the present invention with a surface material attached, FIG. 2 is an enlarged sectional view taken along the - line in FIG. 1, and FIG. 3 is a surface view of the substrate according to the present invention. FIG. 4 is an enlarged sectional view taken along the - line in FIG. 3, FIG. 5 is a partially enlarged sectional view of the substrate of the present invention, FIG. A surface view of the thermoplastic plate according to the invention, FIG. 8 is an enlarged sectional view taken along the line - in FIG. 7, FIG. 9 is a partially enlarged sectional view of the thermoplastic plate of the invention, and FIG. 11 is a partially cut-away surface view of a thermoplastic board adhered to a substrate with adhesive applied to each surface; FIG. 11 is a partially omitted enlarged cross-sectional view of another shoe insole according to the present invention; FIG. FIG. 13 is an enlarged sectional view of another thermoplastic plate according to the present invention, FIG. 14 is an enlarged sectional view of another substrate according to the present invention, FIG. 15 FIG. 2 is an explanatory diagram of the foot shape of the shoe insole according to the present invention. A... Insole, B... Insole material, C... Heater, D... Feet, a... Forefoot, b... Heel, 1...
...Substrate, 2...Buffer piece, 3...Thermoplastic plate, 4...
...Surface material, 5...Arrangement part, 6...Arrangement part, 7...
Cork grains, 8...Fiber for nonwoven fabric, 9...Slanted part,
10... Cork grains, 11... Adhesive, 12... Recessed portion.

Claims (1)

[Claims for Utility Model Registration] 1. A buffer piece 2 that is harder and more elastic than the substrate 1 is arranged at the part of the substrate 1 that bears the most weight, and a thermoplastic binder is applied to the cork grains and nonwoven fabric fibers. A thermoplastic plate 3 that can be softened and deformed by heating is formed by mixing and molding, and the thermoplastic plate 3 is laminated and integrated on the front part a of the base plate 1 to form an insole material B. A shoe insole characterized by processing a plastic plate 3 into a desired foot shape by heating. 2. The shoe insole according to claim 1, wherein the substrate 1 is formed by mixing and molding relatively coarse cork grains with a particle size of about 2 to 4 mm, nonwoven fabric fibers, and a binder. 3. The shoe insole according to claim 1, which is obtained by bonding the surface material 4 to the surface of the insole material B.