JPH0531002A - Manufacture of shoe inner sole - Google Patents

Abstract

PURPOSE:To position reinforcing cloth plates on the surface and back of an inner sole main body properly and easily and to comletely prevent separation of the respective reinforcing cloth plates from the inner sole main body. CONSTITUTION:In a process 1, rubber and magnetic powder are mixed and kneaded, and in a process 2, the raw material is compressed to generate a rubber magnet plate. In a process 3, two reinforcing cloth plates are positioned opposite to each other, with the rubber magnet plate sandwiched in the center therebetween, and there three members are heated and pressurized by a hot plate mold. As woven cloth treated with an adhesive treating agent is used as each reinforcing cloth plate, the respective reinforcing cloth plates are enbedded near the surface and the back of the inside of the rubber magnet plate and three members are solidly joined to each other by hot melt adhesion of an adhesive treating agent. After that, in a process 4, stamping is performed to complete an external form, in a process 5, surface coating is performed, in a process 6, polarization is performed, and in a process 7, wrapping is performed to finish a product.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing an insole for promoting health by applying magnetic field lines and pressure stimuli to the sole of the foot, and in particular, the present invention has a reinforcing cloth plate embedded inside. The method of manufacturing a shoe insole having a reinforced structure.

[0002]

2. Description of the Related Art As a conventional insole, as shown in FIG.
A plurality of protrusions 21 are formed on the arch portion of the main body 20 of the leather insole.
There are those with a rubber plate 22 attached. The rubber plate 22 has a structure in which permanent magnet particles are embedded in the protrusions 21.
It is integrally fixed by being inserted into the groove 23 provided in 0.

In the case of this type of insole, however, the insole body 2
Since there is only a magnetized portion in a part of 0, the magnetic force line cannot act on the entire sole, and it is difficult to obtain a sufficient magnetic therapeutic effect. Further, since the rubber plate 22 has poor physical strength, if bending stress or the like acts during use,
There are major problems in terms of durability, such as cracks in the rubber plate 22 and the rubber plate 22 being cut into pieces and becoming unusable.

In order to solve these problems, the inventor of the present invention pressurizes and magnetizes a mixture of rubber and magnetic powder to form a main body of the insole, and reinforces the inner center of the main body of the insole. We have developed a structure that embeds a dough board for use.
According to this structure, magnetic lines of force can be applied to the entire sole of the foot, and the insole body can be prevented from being fragmented due to bending stress, and the durability of the insole body can be improved.

However, in the improved product, the reinforcing fabric plate effectively functions to prevent tearing or shredding of the insole body, but it is almost impossible to prevent cracks occurring on the front and back surfaces of the insole body. , It is difficult to expect sufficient physical strength. Moreover, when a protrusion is integrally provided on the surface of the insole body, if the base end portion of the protrusion is cracked, the protrusion will fall off, and as a result, the therapeutic effect of the pressure stimulus will be significantly diminished. There is a problem.

[0006]

In order to solve the above problems, the inventor of the present invention buried two reinforcing cloth plates inside a main body of an insole, and arranged each reinforcing cloth plate on the surface of the main body of the insole. We have developed a sock insole that prevents cracks from occurring on the front and back of the insole body and protrusions from falling out from the insole body by positioning it along the vicinity of the back side.

However, it is not easy to embed two reinforcing fabric plates inside the main body of the insole so that they are located along the front and back surfaces of the main body of the insole. When the reinforcing cloth plate is positioned, each reinforcing cloth plate may be peeled off from the main body of the insole, so that there is a problem that the strength and the durability of the insole are reduced.

The present invention has been made in view of the above problems, and it is possible to properly and easily position the reinforcing cloth plates on the front and back surfaces of the main body of the insole, and to separate the reinforcing cloth plates from the main body of the insole. It is an object to provide a method of manufacturing an insole that can be completely prevented.

[0009]

SUMMARY OF THE INVENTION The present invention is a method for manufacturing a magnetic insole in which two reinforcing cloth plates are embedded and a plurality of protrusions are formed on the front and back surfaces. After compressing the kneaded material with the powder into a plate shape to form a rubber magnet plate, two reinforcing fabric plates made of a woven cloth treated with an adhesive treatment agent are placed at opposite positions with the rubber magnet plate sandwiched in the center. Then, by heating and pressurizing, each reinforcing fabric plate is embedded in the rubber magnet plate in the vicinity of the front surface and the back surface, and the three members are integrally joined by heat welding of the adhesive treatment agent to form the insole. I made it.

[0010]

[Function] Since the rubber magnet plate is made of the kneaded material of rubber and magnetic powder, and the woven cloth treated with the adhesive treatment agent is used as the reinforcing cloth plate, the rubber magnet plate is sandwiched in the center to reinforce two pieces. When the dough plates are placed facing each other and heated / pressurized, the raw material of the rubber magnet plate is guided from the weave of each reinforcing dough plate onto each reinforcing dough plate, and the magnetic powder prevents the raw material from moving appropriately. , Each reinforcing cloth plate does not go deep inside the rubber magnet plate. As a result, each reinforcing cloth plate is located along the front surface and the back surface of the insole body, and the reinforcing cloth board is strongly bonded to the insole body by heat welding of the adhesive treatment agent to prevent peeling.

[0011]

1 shows an insole 1 produced by carrying out the present invention, FIG. 1 shows the appearance of this embodiment, and FIG. 2 shows the internal structure of this embodiment. .. The insole 1 of the illustrated example has large projections 3a, 3b and small projections on the front and back surfaces (hereinafter, for convenience of description, a is the front surface and b is the back surface) of a thin-walled insole body 2 having a sole shape. Projection groups 5a and 5b including 4a and 4b are integrally formed, and a large number of vent holes 6 (indicated by + in FIG. 1) are formed through the entire surface of the insole body 2.

The projection groups 5a and 5b on the front and back surfaces are selectively used according to the intention of the user. When the insole 1 is inserted into the shoe, one projection group hits the sole surface of the foot and functions for treatment.
The other projection group hits the sole of the shoe and forms a ventilation gap with the insole body 2. Since the two projection groups 5a and 5b have different magnitudes in the pressure stimulus against the human body, the large projection 3a and the small projection 4a in one projection group 5a have a mountain shape with a pointed top, and the large projection 3b in the other projection group 5b. The small projections 4b and the small projections 4b are each formed in a flat shape and a mountain shape with a round top. Among the protrusions, a large number of large protrusions 3a and 3b are arranged at the arch position P, four at the knuckle position Q, and one at the heel position R, and the small protrusions 4a and 4b are evenly distributed at all other positions. Will be deployed to.

As shown in FIG. 3, the main body 2 of the insole has two reinforcing cloth plates 8 having flexibility inside the rubber magnet plate 7.
9 is buried, and a protective coating 10 made of polyurethane coating or the like is formed on the entire front and back surfaces of the rubber magnet plate 7.

The rubber magnet plate 7 is formed by using a mixture of a synthetic rubber such as NBR rubber (nitrobutadiene rubber) and a magnetic powder such as ferrite as a main raw material.
An N pole is magnetized on the front surface a side and an S pole is magnetized on the rear surface b side, and a magnetic flux density of about 400 to 600 Gauss is given at each projection position.

Each of the reinforcing cloth plates 8 and 9 has a shape that matches the shape of the insole body 2, and a cotton woven cloth or a nylon fiber woven cloth is used. One reinforcing fabric plate 8 is located along the vicinity of the front surface a of the insole body 2, and the other reinforcing fabric plate 9 is located along the vicinity of the back surface b of the insole body 2, and
Reinforce each of the reinforcing cloth plates 8 and 9 with the large protrusions 3a and 3b and the small protrusions 4a,
The protrusion 4b protrudes into the thickness of the protrusion at each position.

FIG. 4 shows the insole body 2 according to the present invention.
The manufacturing method of is specifically shown. First, step 1 is for adjusting the raw material of the rubber magnet plate 7. Synthetic rubber such as NBR rubber and ferrite powder are mixed at a weight ratio of 1:15, and a crosslinking agent and zinc white are added to this mixture. , Sulfur, a vulcanizing agent, a softening agent (for example, DOP-dioctyl phthalate), etc. are added and kneaded. Next step 2 is a step of shaping the rubber magnet plate 7, in which the adjusted raw material is compressed by a roller to form a plate-like object having a uniform thickness, and then cut into a predetermined size.

In the next step 3, as shown in FIG. 5, the two reinforcing material plates 8 and 9 are opposed to each other with the rubber magnet plates 7 and 7 sandwiched in the center, and these three members are heated using a hot plate mold. Pressurize for a certain time in a warm state. The temperature at this time is, for example, about 135 ° C., and the pressurizing time is 3 to 4 minutes. In this heating / pressurizing step, the projection groups 5a and 5b are formed on the front and back surfaces, and the reinforcing cloth plates 8 and 9 are embedded in the rubber magnet plate 7 at positions near the front and back surfaces. become. Moreover, at the respective positions of the large protrusions 3a and 3b and the small protrusions 4a and 4b, the respective reinforcing cloth plates 8 and 9 penetrate into the inside of the wall thickness of the protrusion and effectively function to reinforce the protrusion.

In the case of this embodiment, the reinforcing fabric plates 8 and 9 are used.
As a polycapramide (structural formula: [NH (CH ₂ ) ₅ C
O] _n ) as a component treated with an adhesive treatment agent comprising a mixture of resorcin-formaldehyde polycondensate, butadiene-styrene-vinyl-pyridine copolymer, butadiene-styrene copolymer When the rubber magnet plate 7 is superposed and heated / pressurized, the adhesive treatment agent is melted by heat and the reinforcing cloth plates 8 and 9 and the rubber magnet plate 7 are firmly joined together.

In the next step 4, the outer shape of the insole body 2 is completed by punching the molded body and punching the ventilation holes 6 at the same time. The entire surface is coated with a two-component elastic polyurethane resin paint, thereby forming a protective film 10 having excellent wear resistance.

Next, in step 6, the entire insole main body 2 is magnetized to be magnetized, and N is applied to the surface a side of the insole main body 2.
The S pole is magnetized on the pole and the back surface b side. In this example,
By the magnetizing process in this step, the large protrusions 3a and 3b are 550
A magnetic flux density of 400 Gauss is applied to the Gausses and the small protrusions 4a and 4b, and 180 Gauss is applied to the other plane portions. Then, in the final step 7, packaging and other processing are performed to complete the product.

When this shoe insole 1 is used, for example, when the back surface b is placed on the sole side and inserted into the inside of the shoe, the projection group 5b is formed.
Due to this, a ventilation gap is formed between the bottom surface of the shoe and the insole 1, so that evaporation of perspiration is promoted together with the ventilation hole 6, and it effectively functions to prevent unevenness. Put your foot on this insole 1,
The projection group 5a on the front surface a side comes into contact with the sole surface of the foot, and a strong pressing stimulus is given to the entire sole by the large and small projections 3a and 4a, and at the same time, the magnetic force lines by the rubber magnet plate 7 act effectively. When the pressure stimulus is excessive, the shoe insole 1 is inverted and used, and the light pressure stimulus by the protrusion group 5b on the back surface b side is selected.

When the shoe insole 1 is subjected to bending stress when putting on or taking off shoes or walking, since the two reinforcing cloth plates 8 and 9 are embedded inside the insole body 2, the insole due to the bending stress is applied. The occurrence of cracking or shredding of the main body 2 is completely prevented.

Moreover, the two reinforcing cloth plates 8 and 9 are located along the front surface a and the back surface b of the insole body 2, and in addition to this, the reinforcing cloth plates 8 and 9 are joined together by the adhesive treatment agent. By virtue of the fact that it is strongly bonded to the rubber magnet plate 7, the occurrence of cracks on the front and back surfaces of the insole body 2 is completely prevented. In particular, cracks are less likely to occur at the base end portions of the large protrusions 3a and 3b and the small protrusions 4a and 4b, so that these protrusions are prevented from falling off during use, and the reinforcing fabric plates 8 and 9 are not attached to the protrusions. Since it is inside the wall thickness of the, the function to prevent the protrusions from falling off is further strengthened. Further, since the front and back surfaces of the insole body 2 are coated with the protective coating 10, the insole body 2 has excellent abrasion resistance and physical strength sufficient to withstand normal use.

[0024]

As described above, according to the present invention, after the kneaded material of rubber and magnetic powder is compressed into a plate shape to form a rubber magnet plate,
Two reinforcing cloth plates made of a woven cloth treated with an adhesive treatment agent are placed facing each other with the rubber magnet plate sandwiched in the center between them and heated and pressed, whereby each reinforcing cloth plate is placed inside the rubber magnet plate. Since it was embedded in the vicinity of the front and back surfaces of the shoe and the three members were integrally joined by heat welding of the adhesive treatment agent, cracks and insoles were generated on the front and back surfaces of the insole body. The protrusion of the main body is completely prevented from falling off. Further, since each reinforcing fabric plate is strongly bonded to the rubber magnet plate by heat welding of the adhesive treatment agent, there is no fear that each reinforcing fabric plate will be separated from the main body of the insole, and the strength and durability of the insole can be enhanced. .. Furthermore, just by heating and pressing the rubber magnet plate in the center between the two reinforcing fabric plates, each reinforcing fabric plate can be attached to the front and back surfaces of the rubber magnet plate without penetrating deep inside the rubber magnet plate. The insoles can be easily positioned along the line, and an insole having excellent strength can be manufactured without requiring special steps.

[Brief description of drawings]

FIG. 1 is a plan view showing a shoe insole manufactured by carrying out the present invention.

2 is a vertical cross-sectional view of the insole taken along the line AA of FIG.

FIG. 3 is an enlarged cross-sectional view showing a protruding portion of the insole body.

FIG. 4 is a process explanatory view showing the procedure for producing the insole of the present invention.

FIG. 5 is a perspective view for explaining one step in the method of manufacturing the insole.

FIG. 6 is a plan view showing a conventional example of a shoe insole.

[Explanation of symbols]

 1 Insole 3a, 3b Large protrusion 4a, 4b Small protrusion 7 Rubber magnet plate 8, 9 Reinforcing fabric plate

Claims (1)

Claim: What is claimed is: 1. A method for manufacturing a magnetic insole in which two reinforcing cloth plates are embedded and a plurality of protrusions are formed on the front and back surfaces, the method comprising: The kneaded material of No. 2 is compressed into a plate shape to form a rubber magnet plate, and the woven cloth is then treated with an adhesive treatment agent.
By heating and pressurizing the reinforcing fabric plates by facing each other with the rubber magnet plate sandwiched in the center, each reinforcing fabric plate is embedded in the vicinity of the front surface and the back surface inside the rubber magnet plate, and A method for manufacturing an insole, characterized in that the insole is manufactured by integrally joining the three members by heat welding an adhesive treatment agent.