JPH0122493Y2 - - 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, which impairs wearing comfort.

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.

(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.

A surface material h, a mesh material m, a room-temperature plastic plate j, and a substrate k are laminated and integrated in order from the surface.

The room-temperature plastic board 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 substrate k is composed of relatively coarse cork grains with a grain size of about 2 to 4 mm, nonwoven fabric fibers, and a binder, and does not soften at temperatures from room temperature to around 50°C, and has good elasticity, abrasion resistance, and bending resistance. It is excellent.

(Example) As shown in FIG. 2, 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, 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. 3, 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 board k, and as shown in Fig. 4, it has a relatively small particle size of about 2 to 4 mm. Coarse cork grains 3, 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 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, urethane, etc. 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 mesh material m, and shape these into a foot shape. Cut into pieces.

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 as shown in FIG. 1.

The room-temperature plastic plate j deforms to fit the shape of the sole of the foot due to the body weight during use.

In the above embodiment, the foot-shaped cold plastic plate j is laminated and integrated, but the cold plastic plate j has the main parts of the forefoot part a and the heel part b, as shown in FIG. It may be divided into parts and arranged, or it may be arranged only in the front step part a, as shown in FIG.

In the above embodiment, the entire surface material h is made of the same material, but as shown in FIGS. You may use what you are wearing.

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 for manufacturing the shoe insole of the above embodiment, when the substrate k, room-temperature plastic board j, mesh material m, etc. are laminated and integrated, these cut into foot shapes may be laminated, and after these are laminated, the foot shape is The order of the lamination work and the 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 insole material A is disposed, the 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.

(Function and effect of the invention) The shoe insole according to the invention comprises a room-temperature plastic board j and a substrate k made of cork grains, nonwoven fabric fibers, and a binder.
Since the mesh material m is arranged between the cork and the surface material h and are integrally laminated, the water accumulated between the cork grains will not seep onto the surface of the surface material h and impair the comfort of the wearer. It is something.

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 comprises a room-temperature plastic board (j) and a substrate (k) comprising cork grains, nonwoven fabric fibers, and a binder.
Since the mesh material m is arranged between the surface material h and the surface material h, and the mesh material m is integrally laminated, the cork grains are uniformly dispersed between the nonwoven fabric fibers, and the cork grains and the nonwoven fabric fibers,
Fibers together, room temperature plastic board j, substrate k, mesh material m
and the surface material h adheres firmly and has excellent flexibility and durability.

The shoe insole of the present invention comprises a room-temperature plastic board j and a substrate k made of cork grains, nonwoven fabric fibers, and a binder;
Since the mesh material m is placed between the surface material h and the material is integrally laminated, it has excellent heat retention, air permeability, and elasticity.

Since the insole of the present invention is equipped with a room-temperature plastic plate j, the room-temperature plastic plate j deforms into the desired shape of the foot during use, fits snugly to the sole shape, and has a strong grip. be.

The shoe insole of this invention is made of felt-like room-temperature plastic board.
Because of this, the room-temperature plastic plate j absorbs sweat and other moisture well, providing excellent comfort.

The shoe insole of the present invention is a room-temperature plastic plate with different properties consisting of cork grains, nonwoven fibers, and a binder.
and substrate k are integrally laminated, it is possible to eliminate the drawbacks that occur when cork grains are made into a sheet, and the characteristics of cork grains can be fully exhibited.

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]

Fig. 1 is a surface view of the shoe insole of the present invention, Fig. 2 is a partially omitted enlarged sectional view taken along the - line in Fig. 1, Fig. 3 is a partially enlarged view of the mesh material according to the present invention, and Fig. 4 The figure is a partially enlarged view of the cold plastic plate according to the present invention, Figure 5 is a partially enlarged view of the board according to the present invention, and Figure 6 is a cold plastic plate according to the present invention divided into a forefoot part and a heel part. FIG. 7 is a surface view of a board with the room-temperature plastic plate according to the present invention arranged only on the front step.
Figure 8 is a surface view of another surface material according to the present invention, Figure 9
The figure is a partially omitted enlarged sectional view taken along the - line in FIG. 8. a...Forefoot, b...Heel, h...Surface material, j
... Room temperature plastic plate, k ... Substrate, m ... Mesh material, 1 ... Small hole, 2 ... Sewing thread, 3 ... Cork grain,
4... Fiber for nonwoven fabric, 5... Front end, 6... Fabric.

Claims (1)

[Scope of utility model registration request] It is formed by laminating and integrating a surface material h, a mesh material m, a room-temperature plastic board j, and a substrate k in order from the surface. It is a felt-like body that is plastic at room temperature and has excellent water absorption and air permeability. An insole characterized by not softening at room temperature and having wear resistance and bending resistance.