JPH0245003A - Insole - Google Patents

Abstract

PURPOSE:To obtain an insole, which stimulates a sole at walking time, has satisfactory permeability and hygroscopicity, and has a deodorizing action and bactericidal action, by placing either resin beads or the resin beads holding a mineral antibacterial material, a deodorizing material, etc., on their surfaces in a mold, either heating or pressuring and heating the resin beads, fusing the resin beads, and making the fused resin beads into the insole. CONSTITUTION:The mold is covered with the resin beads, the resin beads are fused by either heating or pressuring and heating the resin beads, and a sheet for the insole is manufactured. The ruggedness state of the surface of the sheet to be obtained can be controlled by appropriately selecting the size of each resin bead, the thickness of the bead to be laid, a heating temperature, a pressure, operational conditions, etc., according to the type of the resin of the resin beads to be used and the mold to be used, and the insole can be obtained, which stimulates the sole at the walking time and is good for health. When the resin beads are used, which either include the deodorizing material, a bactericidal material, a pigment, a perfume, etc., or are coated with the above-mentioned materials, etc., as the resin beads for the insole, the properties of deodorization, disinfection, perfume, etc., can be given to the manufactured sheet.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention relates to a shoe insole, more specifically, a shoe insole obtained by filling a mold with resin beads and fusing the beads by applying pressure and heating. The insole has irregularities on the surface, which stimulates the soles of the feet when walking and improves health.It has excellent moisture absorption, ventilation, and heat retention properties, and has deodorizing and sterilizing properties, so it can prevent athlete's foot.
This invention relates to a shoe insole that is effective for treatment and hygiene. Note that the term "shoe insole" as used herein refers to an object that the sole of the foot comes into direct contact with, and specifically includes shoe insoles, slippers, sandals, and the like.

(Prior Art and Problems to be Solved by the Present Invention) When wearing shoes for a long time, it is common to experience stuffy feet and foul odors due to poor breathability and moisture dissipation. This condition is suitable for the growth of athlete's foot fungus, and athlete's foot often occurs in people who wear shoes for long periods of time and exercise vigorously.
Wearing shoes for a long time like this is not good for your health, so insole is used in shoes to eliminate these problems. Therefore, it is desirable for shoe insoles to have materials that have good ventilation and moisture absorption, and that can efficiently remove metabolites from the feet.
Products made of woven fibrous materials and crafted from leather are commercially available, and there are also products that incorporate activated carbon or metal powder such as copper or zinc to have deodorizing and sterilizing effects. . However, it cannot be said that conventional insoles fully demonstrate their functions. It is also recognized that stimulating the soles of the feet is important for maintaining health, and stomping on green bamboo is generally recommended. However, there are two types of bad odors: basic ones such as ammonia and amines, and acidic ones such as thiophene and thiocarbonyl.Activated carbon absorbs and removes basic bad odors relatively efficiently, but it is acidic and has a small molecular weight. There is no difference in adsorption and removal of sulfur-based odors.

For this reason, the deodorizing effect of shoe insoles containing activated carbon cannot be said to be sufficient.

The present invention improves the performance of conventional shoe insoles,
The insole has the effect of stimulating the soles of the feet, so there is no need to perform Qingzhuro separately, and the insole has good ventilation, moisture absorption, sterilization, and
To provide a shoe insole that does not cause problems like conventional ones even when shoes are worn for a long time because it has a deodorizing effect.

(Means for solving the problem) Resin beads are placed in a mold and heated or pressurized to fuse the resin beads to make a shoe insole sheet. The unevenness of the resulting sheet surface can be controlled by appropriately selecting the size of the resin beads, the thickness of the beads laid down, heating temperature, pressure, operating conditions, etc., depending on the type of resin used and the mold used. This provides a healthy insole that stimulates the soles of the feet while walking. The heating temperature, pressure, and operating conditions are set depending on the type of resin and the size of the beads, but it is preferable to select the lowest temperature, pressure range, and operating time necessary to fuse the resin beads. The particle size of the beads is selected depending on the thermal conductivity of the resin,
Relatively large resin beads are used for resins with relatively good thermal conductivity, and relatively small resin beads are used for resins with relatively poor thermal conductivity, but generally resin beads with a diameter of several m/m are used, preferably 0. Resin beads with a diameter of about .5 to 5 m/m are used. The properties of the resulting sheet vary depending on the properties of the resin used. For example, acetyl cellulose resin,
When a relatively hygroscopic resin such as vinyl acetate resin is used, the sheet produced is hygroscopic, whereas when a foamable resin containing a foam material is used, the sheet produced is only breathable. becomes.

When resin beads containing or coated with deodorizing materials, sterilizing materials, pigments, or fragrances are used,
Properties such as deodorization, sterilization, and aromatic properties can be imparted to the produced sheet. Resin beads holding these drugs can be easily obtained by known methods, but when forming coated beads, the following method can be used to increase the coating amount and easily coat materials that are difficult to coat. It is possible to coat the That is, when coating raw resin beads (hereinafter referred to as A) with a drug,
Resin beads (hereinafter referred to as B), which are the same type of resin as the raw material and have a smaller particle size than A, are made to coexist with A and coated with the drug.The drug is coated not only on A but also on B, and this coating Since the treated B is further coated on A, the amount of drug coated can be increased compared to when only A is treated with a drug, and it is also easier to coat raw resin beads that are difficult to coat with drugs. In this case, it is desirable that the particle size of B used is 1/lθ or less of A, and the particle size of the drug should be smaller than B, and the amounts of A and B should be determined by the amount of drug to be coated and the particle size. , and the particle size of A. In addition, if it is difficult to coat A with the drug, select a resin that is easy to coat with the drug for B, and the drug will be easily coated on B.
Furthermore, since the drug is attached to A via B, A is easily coated with the drug.

Alternatively, a hybridization system that disperses fine particles of these drugs in the gas phase and applies mechanical and thermal energy, mainly impact force, to the particles to immobilize or form a film on resin beads in a short time. It is preferable to use resin beads coated with. Any commonly used molding method can be used as the molding method, but when compression molding is used, the drug coated on the surface of the resin beads is uniformly supported on the surface of the generated sheet, and it is difficult to peel it off from the sheet. It can be said that it is preferable because the effect is strong and long-lasting.

As the deodorizing material, activated carbon, activated alumina, activated silica gel, bentonite, zeolite, and other adsorbents commonly used as adsorbent deodorizing materials, metal salts such as iron and copper, and mixtures thereof can be used. These substances not only have a deodorizing effect but also a moisture absorbing effect, so when used in shoe insoles, they exhibit deodorizing and moisture absorbing effects, and when used in combination with metal salts, their sulfur-based deodorizing ability makes them an unprecedentedly effective way to deodorize shoes. It becomes the insole. Any sterilizing material that can be kneaded into resin beads can be used as a sterilizing material, but organic sterilizing materials are relatively sensitive to heat, so zeolite, hydroxyapatite, ceramics, and other inorganic materials such as dung stone can be used. It is preferable to use inorganic antibacterial substances obtained by ion-exchanging metal ions such as silver, copper or zinc with an ion exchanger. Because it is strongly coated, it does not peel off from the sheet even when molded, has a broad antibacterial spectrum, and has a permanent antibacterial effect, making it superior to organic bactericidal materials. Furthermore, since these inorganic antibacterial materials are based on inorganic ion exchangers, they also have the deodorizing and hygroscopic properties that they possess. In other words, shoe insoles using resin beads coated with these inorganic antibacterial materials are multifunctional insoles that are sterilizing, deodorizing, and absorbing moisture.

A water-absorbent sheet made by fusing resin beads,
Adhering water repellent sheets, elastic sheets, heat insulation sheets, sterilizing and deodorizing sheets, etc., or fusing resin beads onto these sheets by placing resin beads on these sheets and heating or applying heat and pressure. is also possible.

By forming a multilayer sheet in this manner, it is possible to provide an effect other than that of the resin beads, or to create an insole that enhances the effects of the resin beads.

(Function) Shoe insoles manufactured by placing resin beads or resin beads with inorganic antibacterial materials, deodorizing materials, or other substances supported on the surface in a mold and fusing them by heating or pressurizing the insole are made of resin. This selection results in an insole that has excellent breathability and moisture absorption, and has permanent deodorizing and sterilizing properties.The unevenness of the sheet surface stimulates the soles of the feet when walking, creating an insole that is excellent for maintaining health. It is an insole that acts as a mat, removes bad odors, and is effective in preventing athlete's foot.

The present invention will be specifically described below with reference to Examples.

Example 12 Polyethylene beads with a particle size of about 2 fins were heated at 120℃ for 2 hours.
Compression molding was performed at ksr/cd to create a porous sheet with a thickness of approximately 2.5 tn. By cutting this material, we created a shoe insole with uneven surfaces and good ventilation.

Example 20 Acrylic beads with a particle size of about 11 layers were coated with deodorized, antibacterial ceramic and pigment, and then thermoformed at 140°C to create a porous sheet with unevenness and a thickness of about 2 fins. By cutting this, it is deodorized, antibacterial, and breathable.
I made an insole for shoes with uneven surfaces.

Example 3. Example 2. A cushion insole was created by gluing the sheet to a foamed urethane sheet.

Example 40 Polyethylene beads with a particle size of approximately 111 mm coated with deodorized, antibacterial ceramic and hydroxyapatite were placed on the top surface of a water-absorbing resin sheet at 120°C for 1k.
g/- by compression molding to create a sheet with unevenness and water absorption properties. This sheet was cut to create a water-absorbent insole with uneven surfaces that adsorbs B. bacterium and has deodorizing and antibacterial effects.

Example 58 An insole similar to that in Example 4 was prepared by replacing the polyethylene beads in Example 4 with polystyrene beads and at a temperature of 180°C.

Example 6. Polyethylene beads containing silver and having a particle size of 0.5 to 1.5 cm and hydroxyapatite coated polyethylene beads having a particle size of 0.5 to 5 mm are mixed and thermoformed at 150°C. By bonding the resulting porous sheet to a nonwoven fabric with good air permeability, we created a textured insole that has sterilizing and deodorizing effects, and has good air permeability.

(Effects) The insole according to the present invention stimulates the sole of the shoe during walking, has good ventilation and moisture absorption, and has deodorizing and sterilizing properties, so even if the shoe is worn for a long time, it will not work like a conventional insole. No problems will occur.

Claims (2)

[Claims] (1) A shoe insole manufactured by fusing resin beads. (2) The shoe insole according to claim (1), which carries a deodorizing material, a bactericidal material, or a mixture thereof on its surface. (3) The shoe insole according to claim (1), which has an uneven surface.