JPH0810006A - Insole for shoes and its manufacture - Google Patents

Abstract

PURPOSE:To provide an insole for shoes in which the elasticity in the toe part to which a load is most applied at wearing is never deteriorated even by a long-term use, and the touch laid along the foot bottom is soft. CONSTITUTION:This insole is formed by sticking a moisture absorbing cover material 2 onto the upper surface of an elastic insole body 1 in which a peripheral part 6 is formed thick extending from the shank part 4 to the heel part 5, and the outer periphery is set high to provide a recessed part 7 on the upper surface of the heel part 5. The bottom form of the foot extending from the toe part 3 to the heel part 4 of the insole body 1 is formed by natural rubber sponge and/or synthetic rubber sponge. The peripheral part 6 extending from the shank part 4 to the heel part 5 is formed thick by a thermoplastic resin foamed body having flexible elasticity, and the outer periphery 6a is set high.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an insole worn on shoes, and more particularly to an insole suitable for sports shoes and a method for manufacturing the same.

[0002]

[Prior Art] As an insole suitable for sports shoes,
The peripheral part is thickly formed from the arch part to the heel part, and the peripheral part is high, and the upper surface of the heel part has a recess, and the upper surface of the insole body has elasticity and has hygroscopicity. A shoe insole to which a cloth material is attached is known.

[0003]

However, in the above-mentioned conventional insole, the insole body is integrally formed from a foamed body of a thermoplastic resin having a flexible elasticity such as EVA resin, RB resin, and EP resin. Therefore, there is a problem that the elasticity of the toe part, which is the most loaded when worn, deteriorates in a short period of time and cannot be used for a long period of time.

The present invention has been made for the purpose of solving the above-mentioned problems of the prior art, and at least the toe portion of the insole body is formed by a natural rubber sponge and / or a synthetic rubber sponge, while the arch portion is formed. (EN) Provided are a shoe insole which can endure long-term use while having a flexible elasticity in a peripheral portion extending from a heel portion to a heel portion by a thermoplastic resin foam, and a manufacturing method thereof.

[0005]

In order to achieve the above object, the present invention has a thick peripheral edge portion extending from the arch to the heel portion and has a high outer peripheral edge. An insole in which a hygroscopic covering material is adhered to an upper surface of an elastic insole body having a recess on the upper surface of the heel portion, and at least the toe portion of the insole body is a natural rubber sponge and / Or, it is formed by a synthetic rubber sponge, and the peripheral edge portion extending from the arch to the heel portion is thickly formed by a foamed thermoplastic resin having a flexible elasticity, and the outer peripheral edge is raised. Characterize.

The whole bottom shape of the foot extending from the toe part to the heel part of the insole body is formed by a natural rubber sponge and / or a synthetic rubber sponge, and only the peripheral part from the arch part to the heel part has a flexible elasticity. You may form with the foamed body of the thermoplastic resin which has.

In the method of the present invention, at least the toe part of the insole body is cut with a plate-shaped natural rubber sponge and / or synthetic rubber sponge to form a first member, and the arch part of the insole body is removed. A hygroscopic covering material is attached to the surfaces of both members of a molding material formed by adhering a second member formed by cutting the heel portion with a plate-shaped thermoplastic resin foam, and the molding material is attached to the foot. While heating in a mold having a bottom-shaped recess, pressurizing and molding, and then cooling, the peripheral part from the arch to the heel is thickened by the thermoplastic resin foam. In addition to being formed, the outer peripheral edge is formed high.

[0008]

In the insole constructed as described above, the elasticity of the toe part, which is most loaded when worn, does not deteriorate even after long-term use. Moreover, since the peripheral edge portion extending from the arch portion to the heel portion has a flexible elasticity, the feel of the sole is soft and good.

[0009]

Embodiments of the present invention will be described below with reference to the drawings.

1 and 2 show an insole according to the present invention, which is formed by adhering a hygroscopic covering material 2 such as pile material on the upper surface of an insole body 1. .

The insole body 1 includes a toe portion 3 and an arch portion 4
And, the bottom-shaped body of the foot extending over the heel portion 5 is formed of a rubber sponge made of natural rubber sponge or synthetic rubber sponge or a mixture thereof, while the peripheral edge portion 6 extending from the arch portion 4 to the heel portion 5 is The heel portion 5 has a thick outer wall 6a formed by a foamed material of a flexible elastic thermoplastic resin, for example EVA resin.
A recess 7 is provided on the upper surface of the.

In order to manufacture such an insole, first, referring to FIG.
A molding material 10 made of composite materials A and B as shown in FIG. That is, a first member obtained by cutting a plate-shaped rubber sponge made of a natural rubber sponge, a synthetic rubber sponge, or a mixture thereof into a bottom shape of the foot extending to the toe part 3, the arch part 4 and the heel part 5 of the insole body 1. A, and a second member B obtained by cutting a plate-like material made of a foamed EVA resin having a flexible elasticity into a U-shape surrounding the periphery of the arch part 4 to the heel part 5 of the insole body 1. Bond with adhesive C. The first member A preferably has a shape in which the thickness gradually increases from the toe part 3 toward the heel part 5, but may be formed in a plate shape having a uniform thickness.

Next, as shown in FIGS. 4 and 5, the molding material 10 having the hygroscopic covering material 2 bonded to the upper surface thereof is placed on a molding die 12 having a foot-shaped concave portion 13, as shown in FIGS. When this is heated while being pressed by the pressing die 14, the second member B is softened and the concave portion 1 of the forming die 12 is pressed, as shown in FIG.
3 and then the molding die 12 is cooled, as shown in FIGS. 1 and 2, the toe part 3 and the arch part 4 are
And the sole part of the heel 5 is made of rubber sponge,
On the other hand, the peripheral edge 6 extending from the arch 4 to the heel 5 is EVA.
The outer peripheral edge 6 is formed with a thick resin foam.
The height a becomes high, and the insole in which the depression 7 is provided on the upper surface of the heel portion 5 is completed.

7 and 8 show the toe portion 3 of the insole body 1.
Only the rubber sponge is used to form the arch 4 and heel 5.
2 shows an example in which the peripheral portion 6 and the peripheral portion 6 are molded from a flexible EVA resin foam. In addition, as shown by the phantom line in the figure, the central portion 5 ′ of the heel portion 5 is connected to the toe portion 3
You may form with the same rubber sponge as.

The insole shown in FIGS. 7 and 8 can also be manufactured using the molding die 12 and the pressing die 14 described above. However, in the molding material 10 shown in FIG. 3, the first material cut into the shape of the toe part 3 and the center part of the heel 5'is used.
The member A and the second member B cut into the remaining shape are adhered to each other.

In the above embodiments, EVA resin was mentioned as the thermoplastic resin material having flexibility and elasticity.
Besides, RB resin, EP resin and the like can be adopted.

[0017]

As described above, the insole of the present invention is
Since the toe that is most loaded when worn is made of natural rubber sponge and / or synthetic rubber sponge,
Elasticity does not deteriorate even after long-term use. Moreover, since the peripheral edge portion extending from the arch portion to the heel portion is formed of the foamed material of the thermoplastic resin having a flexible elasticity, the feeling of conforming to the sole of the foot is soft and the good wearing feeling is maintained.

According to the method of the present invention, the insole of the present invention can be manufactured easily and at low cost.

[Brief description of drawings]

FIG. 1 is a plan view of an insole according to the present invention.

FIG. 2 is a sectional view taken along line 2-2 of FIG.

FIG. 3 is a plan view of the molding material.

FIG. 4 is a plan view of a molding die.

FIG. 5 is a vertical sectional front view of a main part of a molding die and a pressing die for carrying out the method of the present invention.

FIG. 6 is a vertical sectional front view of a main part showing the molding step.

FIG. 7 is a plan view showing another embodiment of the insole according to the present invention.

8 is a cross-sectional view taken along line 8-8 of FIG.

[Explanation of symbols]

 1 Insole main body 2 Hygroscopic covering material 3 Toe portion 4 Arch part 5 Heel portion 6 Peripheral portion 6a Outer peripheral edge 7 Depression 10 Molding material A First member B Second member C Adhesive 12 Molding die 14 Pressing die

Claims (4)

[Claims] 1. A peripheral edge portion is formed thickly from the arch portion to the heel portion, and the outer peripheral edge is raised,
An insole in which a hygroscopic covering material is attached to an upper surface of an elastic insole body having a recess on the upper surface of the heel portion, wherein at least the toe portion of the insole body is a natural rubber sponge and / or Formed with a synthetic rubber sponge, the peripheral part from the arch part to the heel part is thickly formed with a flexible elastic thermoplastic resin foam,
Insole with a high outer edge. 2. The outer peripheral edge is high while the peripheral edge portion is formed thick from the arch portion to the heel portion,
An insole in which a hygroscopic covering material is adhered to the upper surface of an elastic insole body having a recess on the upper surface of the heel portion, the sole of the foot extending from the toe portion to the heel portion of the insole body. The shape is made of natural rubber sponge and / or synthetic rubber sponge, and the peripheral edge from the arch to the heel is thickly made of a flexible thermoplastic resin foam and has an outer peripheral edge. Insole with a high toe. 3. A first member formed by cutting at least the toe part of the insole body with a plate-shaped natural rubber sponge and / or a synthetic rubber sponge, and a plate-shaped heel part from the arch part of the insole body. A second member formed by cutting with a thermoplastic resin foam, and a hygroscopic covering material is attached to the surface of the molding material, and the molding material is molded with a foot-shaped recess. While putting in a mold and heating, pressurizing and molding, and then cooling, the peripheral edge portion extending from the arch portion to the heel portion is formed thick by the foam of the thermoplastic resin, and the outer peripheral edge is A method for manufacturing an insole, which is characterized by being formed high. 4. A first member formed by cutting the bottom shape of the foot extending from the toe part to the heel part of the insole body with a plate-shaped natural rubber sponge and / or synthetic rubber sponge, and the arch part to the heel part. A hygroscopic covering material is attached to the surface of a molding material obtained by adhering a second member formed by cutting the peripheral portion of the plate with a plate-shaped thermoplastic resin foam, and bonding the molding material to the bottom of the foot. Put into a mold with a concave section and heat, pressurize and mold, and then cool, the peripheral part from the arch to the heel is thickened by the thermoplastic resin foam. The method for manufacturing an insole is characterized in that the outer peripheral edge is formed to be high.