Fragrant insole and fragrant shoe

Abstract

To provide a fragrant insole preventing a component or an agent imparting fragrance from coming into direct contact with a foot sole, having high durability, and not adversely affecting foot comfort, and a fragrant shoe including the fragrant insole.SOLUTION: A fragrant insole includes at least two layers of a surface layer in contact with a foot sole and a back layer in contact with an insole, and when the foot sole is placed on the surface layer, a convex part, the arch cushion, is formed in the part corresponding to the medial longitudinal arch of the foot sole. The arch cushion is configured to clamp a crosslinked rubber composition containing a fragrance component between a front surface layer and a back surface layer, and the surface layer on the part where the arch cushion is formed has a breathable structure. A fragrant shoe includes the fragrant insole.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a scented shoe insole and a scented shoe provided with the same. [Background technology]

[0002] It is known that treating shoes with a deodorant or fragrance is an effective means for reducing unpleasant odors after taking off shoes. For example, Patent Document 1 proposes a shoe with a deodorant and fragrance mechanism, which is provided with a cylindrical container filled with a deodorant or fragrance in a cavity provided in the heel part (heel), as a method for imparting a scent to shoes. Also disclosed is a means for making an insole attached to the inner sole of a shoe fragrant. For example, Patent Document 2 discloses an insole containing a silica-based deodorant and having an ink containing silica-based porous fine powder with fragrance adsorbed thereon printed on the surface of the insole, and Patent Document 3 discloses a shoe insole using an air cushioning sheet in which a fragrance component and a deodorant component are sealed in an air chamber formed by a film. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2014-14540 A [Patent Document 2] Japanese Patent Application Publication No. 4-236903 [Patent Document 3] Utility Model Registration No. 3153723 Summary of the Invention [Problem to be solved by the invention]

[0004] However, the shoes with a fragrance mechanism proposed in Patent Document 1 require a cylindrical container to be incorporated in the heel or heel part, and the applicable shoes are limited, so it cannot be said to be a highly versatile means. This problem can be solved if a fragrant insole or insole is used, but the insole printed with ink disclosed in Patent Document 2 has a printed surface that directly contacts the sole of the foot, so there is a concern that socks or bare feet will be contaminated with ink. The insole for shoes disclosed in Patent Document 3 is not durable because the weight is directly applied to the air cap made of a film when the shoes are worn, and if the air cap is damaged, the enclosed ingredients may leak into the shoes. In addition, when worn, the soft air cap directly contacts the sole of the foot, making the balance unstable and making the shoes uncomfortable to wear.

[0005] In view of the problems with the prior art described above, the present invention aims to provide an aromatic shoe insole that does not allow the aromatic components or agents to come into direct contact with the soles of the feet, is highly durable, and does not adversely affect the comfort of the shoes, as well as aromatic shoes equipped with the insole. [Means for solving the problem]

[0006] In order to achieve the above object, the present invention is configured as follows.

[0007] [1] 1. A scented shoe insole, comprising: The shoe has at least two layers: a surface layer that contacts the sole of the foot and a back layer that contacts the insole of the shoe; When the sole of the foot is placed on the surface layer, a convex part that acts as an arch cushion is formed in the area that corresponds to the medial longitudinal arch of the sole of the foot. The arch cushion has a structure in which a crosslinked rubber composition containing a fragrance component is sandwiched between a surface layer and a back layer, The surface layer of the portion where the arch cushion is formed has a breathable structure. Aromatic shoe insoles. [2] The aromatic shoe insole according to the preceding paragraph [1], wherein the breathable structure is a structure having a plurality of pores penetrating the front and back of the surface layer. [3] The aromatic shoe insole according to the preceding item [1] or [2], wherein the crosslinked rubber composition contains one or more fragrance components selected from the group consisting of β-citronellol, 4-tert-butylcyclohexyl acetate, allyl heptanoate, CIS-3-hexenyl acetate, CIS-3-hexenol, allyl hexanoate, and calone. [4] A fragrant shoe equipped with a fragrant insole according to any one of the preceding paragraphs [1] to [3]. Effect of the Invention

[0008] According to the present invention, it is possible to provide an aromatic shoe insole which does not allow components or agents imparting fragrance to come into direct contact with the sole of the foot, is highly durable, and does not adversely affect the comfort of the shoe, and an aromatic shoe equipped with the insole. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 is a schematic top view showing one embodiment of a scented shoe insole of the present invention. [Diagram 2] FIG. 2 is an exploded perspective view showing one embodiment of the scented shoe insole of the present invention. [Diagram 3] FIG. 3 is a photograph showing the state of a shoe fitted with the fragrant insole of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, examples of embodiments of the scented shoe insole and scented shoe of the present invention will be described with reference to the accompanying drawings.

[0011] FIG. 1 is a schematic top view showing one embodiment of a scented shoe insole of the present invention. FIG. 2 is an exploded perspective view showing one embodiment of the scented shoe insole of the present invention. The fragrant shoe insole of this embodiment has a planar shape that reflects the shape of the insole of the shoe in which it is to be worn, and typically has a shape that approximates the sole of the foot in a plan view.

[0012] The fragrant shoe insole of this embodiment has a surface layer 11 that contacts the sole of the foot and a back layer 15 that contacts the insole of the shoe. The surface layer 11 and the back layer 15 have almost the same shape, and are joined together along the entire periphery when overlapped. The joining method can be a commonly used method, such as sewing, but is not limited thereto.

[0013] In this embodiment, a convex arch cushion 12 that three-dimensionally conforms to the shape of the medial longitudinal arch of the foot (the so-called "arch of the foot") is formed in the portion of the surface layer 11 that comes into contact with the arch when the shoe is worn. The shape of the arch cushion 12 is preferably the same as that of arch cushions in shoe insoles that are generally available on the market, and its size and hardness can be determined as desired according to the desired wearing comfort. For example, if it is desired to firmly support the arch of the foot, the shape can be made thicker and the hardness can be set high.

[0014] The arch cushion 12 is formed by sandwiching a crosslinked rubber composition 14 containing a fragrance component between the surface layer 11 and the back layer 15. Therefore, the shape of the arch cushion 12 usually depends on the shape of the crosslinked rubber composition 14. The fragrance component contained in the crosslinked rubber composition 14 is dispersed by the property of rubber to gradually release the fragrance component, which is a foreign substance (bleed), thereby imparting a persistent fragrance to the insole.

[0015] The type of fragrance can be appropriately selected from the desired fragrance, such as lavender, orange, lemon, grapefruit, floral, green, and fruity fragrances. In addition, a perfume-like fragrance can be freely selected as desired.

[0016] In the present invention, the fragrance component is thus contained in the crosslinked rubber composition, and the crosslinked rubber composition is then incorporated into the surface layer and the back layer, thereby making it possible to prevent the fragrance component from coming into direct contact with the sole of the foot. Even if the crosslinked rubber composition used is a sticky material, by incorporating it in the surface layer, etc., it is possible to avoid any adverse effects due to its properties.

[0017] On the other hand, arch cushions are generally a structure adopted in commercially available shoe insoles to make them comfortable to wear, so by incorporating a crosslinked rubber composition into the arch cushion, it is possible to expect an effect beyond the objective of the present invention, that is, "ingredients or agents that impart fragrance do not adversely affect the comfort of wearing shoes", i.e., improved comfort when wearing the shoes. Furthermore, by adjusting the hardness of the crosslinked rubber composition to an appropriate value, it is possible to impart durability capable of withstanding direct weight for a long period of time.

[0018] In order to generate a fragrance inside a shoe fitted with the fragrant insole of this embodiment, the surface layer of the portion where the arch cushion 12 is formed has a breathable structure. The breathable structure is not particularly limited as long as it is a structure that allows air containing the fragrance from the crosslinked rubber composition containing the fragrance component to pass through. Examples include a knitted structure and a slit structure, but a structure having a plurality of pores 13 as shown in Figure 1 is particularly preferred. The pores can be formed, for example, by punching. The area in which the plurality of pores are distributed may be a part of the surface of the arch cushion 12 or the entire surface. The size and density of the pores can also be set arbitrarily. For example, pores with a diameter of about 2 mm are distributed over an area of ​​1 cm 2 Three to five per unit area can be provided, and the strength of the fragrance can be controlled by appropriately changing these values. Another method for adjusting the strength and duration of the fragrance is to adjust the bleeding speed at the design stage of the crosslinked rubber composition. Furthermore, the strength and duration of the fragrance can be adjusted by changing the size (volume) of the crosslinked rubber composition itself that contains the fragrance component.

[0019] The aromatic shoe insole of this embodiment may have an additional layer, for example, an intermediate layer 16 that provides cushioning, in addition to the surface layer 11, the back layer 15, and the crosslinked rubber composition 14 containing a fragrance component. The intermediate layer 16 is located at the same height in the vertical direction as the crosslinked rubber composition 14 containing a fragrance component. Therefore, in order to prevent the two from interfering with each other, it is preferable that the planar shape of the intermediate layer 16 is missing a part corresponding to the area occupied by the crosslinked rubber composition 14, based on the planar shapes of the surface layer 11 and the back layer 15. However, this is not strictly required, and usually, the intermediate layer 16 and the crosslinked rubber composition 14 may have a part that overlaps with each other.

[0020] The fragrant shoes of this embodiment are shoes fitted with the fragrant shoe insoles of the present invention. FIG. 3 is a photograph showing the state of a shoe fitted with the fragrant insole of the present invention.

[0021] The crosslinked rubber composition containing a fragrance component, which is the essential element of the present invention, will be further described below. The crosslinked rubber used in the present invention is not particularly limited, but from the viewpoint of maintaining the fragrance for a longer period of time, it is preferable to use acrylonitrile butadiene rubber (NBR), and from the viewpoint of dispersing the fragrance more strongly, it is preferable to use silicone rubber.

[0022] The fragrance component used in the present invention is not particularly limited, but it is preferable to use a fragrance component that can suppress the rubber odor from the viewpoint of suppressing the rubber odor of rubber materials. Specific examples of the fragrance include β-citronellol, 4-tert-butylcyclohexyl acetate, allyl heptanoate, CIS-3-hexenyl acetate, allyl hexanoate, and calone. Examples of scents prepared using these fragrance components include floral scents (β-citronellol, 4-tert-butylcyclohexyl acetate), green scents (CIS-3-hexenyl acetate, CIS-3-hexenol), and fruit scents (allyl hexanoate, calone).

[0023] On the other hand, when imparting a desired scent, for example, linalyl acetate and linalool can be used for a lavender scent, d-limonene, sinenal and decanal for an orange scent, d-limonene, citral, geranial and neral for a lemon scent, and d-limonene and nootkatone for a grapefruit scent.

[0024] The crosslinked rubber composition containing a fragrance component can be produced by a production method including a mixing step, a kneading step, and a molding step.

[0025] The blending of the flavoring component with the rubber is mainly carried out in the kneading process, and the kneading mixer used in this process may be a typical rubber kneader such as a roll, kneader, or Banbury mixer. When it is intended to diffuse a strong fragrance, it is preferable to knead the fragrance component into the uncrosslinked rubber in the kneading step, and then crosslink the rubber to obtain a crosslinked rubber containing the fragrance component. Through this step, the kneaded fragrance component is present between the rubber polymers, and the rubber polymers are crosslinked in a somewhat loose state. The loose crosslinked state allows the fragrance to easily pass through the crosslinked rubber, and a crosslinked rubber composition that diffuses a strong fragrance can be obtained.

[0026] After the kneading step, the crosslinked rubber composition is molded into a shape suitable for use in an arch cushion. Examples of the molding method include known resin molding methods such as cast molding, press molding, and injection molding. Among them, press molding is preferred, in which a mold for a desired shoe insole is prepared and used. [Industrial Applicability]

[0027] The fragrant shoe insole has the advantages that the components or agents imparting the fragrance do not come into direct contact with the soles of the feet, are highly durable, and do not adversely affect the comfort of the shoes, thereby meeting the need for comfortable, fragrant shoes. [Explanation of symbols]

[0028] 1. Fragrant shoe insoles 11 Surface layer 12 Arch cushion 13 Pore 14 Crosslinked rubber composition containing fragrance component 15 Back layer 16 Middle Class

Claims

1. 1. A scented shoe insole, comprising: The shoe has at least two layers: a surface layer that contacts the sole of the foot and a back layer that contacts the insole of the shoe; When the sole of the foot is placed on the surface layer, a convex part that acts as an arch cushion is formed in the area that corresponds to the medial longitudinal arch of the sole of the foot. The arch cushion has a structure in which a crosslinked rubber composition containing a fragrance component is sandwiched between a surface layer and a back layer, The surface layer of the portion where the arch cushion is formed has a breathable structure. Aromatic shoe insoles.

2. 2. The fragrant shoe insole according to claim 1, wherein the breathable structure has a plurality of pores penetrating the surface layer from the front to the back.

3. The fragrant shoe insole according to claim 1 or 2, wherein the crosslinked rubber composition comprises one or more perfume components selected from the group consisting of β-citronellol, 4-tert-butylcyclohexyl acetate, allyl heptanoate, CIS-3-hexenyl acetate, CIS-3-hexenol, allyl hexanoate, and calone.

4. A scented shoe comprising the scented shoe insole according to any one of claims 1 to 3.

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