JP2000308501A - Antislip body for shoe sole and its production - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to improve antislip properties and to provide a visual appealing of antislip effect even if an intricate molding method is not carried out by shaping a shoe sole ground contact surface design on one surface of a body and laminating and integrating a mesh-like water absorptive fiber sheet to at least a part of the shoe sole ground contact surface, thereby constituting the antislip body. SOLUTION: The antislip body for shoe soles is obtained when a molding is taken out by opening molds after installing a raw sheet of unvulcanized rubber and the water absorptive fiber sheet into a cavity part for molding the antislip body for shoe soles, then subjecting both to heating and pressurizing to vulcanize and integrate the raw sheet of the unvulcanized rubber and the water absorptive fiber sheet. This shoe sole antislip body is formed of a rubber layer 1' and the water absorptive fiber layer 2' laminated and integrated on its shoe sole design surface 1". The rubber layer 1' is exposed from the mesh portions of the water absorptive fiber sheet 2. If the antislip body for shoe soles is formed by compounding water absorptive stock, such as water absorptive piles, in the raw sheet of the unvulcanized rubber, the water absorptive stock in the rubber layer 1' absorbs the moisture of an ice snow surface and makes it obtain an antislip effect even when the ground contact surface design is worn by walking, etc.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anti-skid body for a shoe sole attached to at least a part of a shoe sole contact surface, and more particularly, to an excellent anti-slip property on an ice-snow surface or a frozen surface. The present invention relates to an anti-skid body for a shoe sole and a method for producing the same.

[0002]

2. Description of the Related Art Conventionally, an anti-slip body made of a rubber component or the like is locally embedded in a tread side of a shoe sole body made of a relatively lightweight synthetic resin foam such as polyurethane, EVA, etc. A technique for obtaining a shoe sole having an anti-slip effect is also known.

There is also known a technique in which hard short fibers such as glass fibers are kneaded in the rubber component of the above-described anti-skid body to further improve the anti-slip property of the anti-skid body. For example, in Japanese Utility Model Publication No. 2-35202, a glass sheet is kneaded with unvulcanized rubber, and a rubber sheet in which the glass fibers are oriented in the rolling direction is formed by rolling.
Laminate it to the required thickness, cut the sheet in the direction perpendicular to the rolling direction, place it on the mold so that the cut surface becomes the ground surface, press-vulcanize it, and buff it on the ground surface. There has been disclosed a technique of performing a treatment to remove a rubber layer on a surface and obtaining a slip-resistant body in which a tip of a glass fiber is exposed substantially perpendicularly to a ground contact surface.

[0004]

By the way, the above-mentioned anti-slip body exposes the fiber kneaded in the rubber component of the anti-slip body to the surface of the grounding surface and makes the exposed fiber substantially perpendicular to the grounding surface. If the fibers are not arranged so as to satisfy the condition, the fiber cannot grip the ice and snow surface well, and the anti-slip effect cannot be expected. Therefore, first, in order to obtain a rubber sheet in which the fibers are arranged substantially perpendicularly to the ground contact surface, it is necessary to go through a complicated forming step as described above, and the above-mentioned obtained through a complicated step. Even after press vulcanization of the rubber sheet, a very complicated molding process is required, such as exposing the fibers except for the rubber layer on the ground contact surface.

[0005] Further, in order to obtain a good anti-slip effect, the fibers used in the above-mentioned anti-slip body must first bend to the extent that they do not bend while having rigidity. There is a problem that it is difficult to select fibers, for example, it must be hard to be deformed into a state such as looseness, and its length is easily kneaded with rubber.

Further, in the above-described anti-slip body, even if the fibers in the rubber sheet are effectively exposed to the ground contact surface, the anti-slip effect cannot be visually recognized at a glance because the fibers themselves are very fine.
The design appeal of the anti-slip effect was also poor.

The present invention can provide a slip-resistant body for a shoe sole having excellent slip resistance without performing such a conventional complicated molding method, and can provide a visual notice of the slip-proof effect. An object of the present invention is to provide an anti-slip body and a method for manufacturing the same.

[0008]

SUMMARY OF THE INVENTION The present invention provides a slip-resistant body for a shoe sole which is attached to at least a part of a shoe sole grounding surface side, wherein the slip-resistant body for a shoe sole has a body. A shoe sole contact surface design is formed on one side, and a mesh-like water-absorbent fiber sheet is laminated and integrated on at least a part of the shoe sole contact surface design side. It is an anti-slip body. The slip-resistant body for a shoe sole according to claim 1, wherein the ground surface side of the slip-resistant body for the shoe sole exposes the main body of the slip-resistant body for a shoe from 40 to 90%. Further, the anti-slip body for soles comprises a rubber component, and the rubber component 100
3. The anti-slip body for a shoe sole according to claim 1, wherein 0.3 to 20 parts by weight of a water-absorbing material is blended with respect to part by weight. Further, the elongation at break of the water-absorbent fiber sheet is at least 30% or more with respect to the length direction of the sole of the shoe. Further, the method for manufacturing a slip-resistant body for shoe soles of the present invention is formed by a design mold having a shoe sole design-formed surface for shaping a shoe sole ground surface design, and a lid mold fitted to the design mold. A method of manufacturing a slip-resistant body for a shoe sole, comprising: laying a mesh-like water-absorbing fiber sheet on the side of the shoe-sole-designed surface in the shoe sole slip-resistant body forming gap formed by the mold; An unvulcanized rubber cloth is stacked and charged, and the rubber cloth and the network-like water-absorbent fiber sheet are vulcanized and integrated by heating and pressing in a usual manner, and then cut into a predetermined shape. This is a method for producing an anti-slip body for a shoe sole.

[0009]

Embodiments of the present invention will be described below in more detail with reference to the drawings. In the present embodiment, an anti-slip body for a shoe sole in which an uneven design is formed on the sole contact surface side is taken as an example.

First, as an anti-slip body molding material for a shoe sole, FIG.
As shown in (1), a sheet-like unvulcanized rubber material 1 and a mesh-like water-absorbent fiber sheet 2 are prepared.

Next, as shown in FIG. 2, a design mold 3 having a design surface 3 'with a shoe sole design, and the design mold 3
The water-absorbent fiber sheet 2 is inserted into the shoe sole anti-skid body forming cavity M of the shoe sole anti-skid body forming mold comprising the lid mold 4 fitted with the cover mold 4 from the shoe sole design surface 3 'side. Then, the non-vulcanized rubber material 1 is placed in this order on the anti-slip body molding material for shoe soles.

The rubber used in the present invention is a rubber usually used for shoe soles, for example, natural rubber, styrene-butadiene copolymer rubber (SBR), polyisoprene rubber (IR), polybutadiene rubber (BR). And an unvulcanized rubber made of synthetic rubber such as acrylonitrile butadiene copolymer rubber (NBR).

[0013] The unvulcanized rubber includes ordinary calcium carbonate, calcium carbonate or magnesium carbonate surface-treated with silane or fatty acid, hydrous silicates such as hydrous aluminum silicate, titanium dioxide, zinc oxide and the like. Fillers, cross-linking agents, other antioxidants, softeners, pigments, and the like are appropriately compounded as necessary, and are uniformly mixed by a mixer such as a Banbury mixer, an open roll, or a kneader. It is constituted by sheeting to a thickness of 0 mm and cutting to a width and a length as appropriate.

The reticulated water-absorbent fiber sheet 2 used in the present invention is a reticulated sheet made of a woven fabric, a knitted fabric, a non-woven fabric or the like, and may be made of a material having a water-absorbing property. Any material may be used as long as it is made of natural fibers such as cotton, wool, and hemp, and synthetic resin fibers such as rayon and polyester.

The mesh-like water-absorbent fiber sheet 2 has a mesh-like shape such that when laminated with the unvulcanized rubber material 1, the rubber is exposed to the ground contact surface in a range of 40 to 90%. Are preferred. For example, 0.25～10.0Mm ² as size of the mesh of the absorbent fibrous sheet 2 is preferably 1.0 to 7.0 mm ^2, is less than 0.25 mm ^2, the ground plane from the mesh portion The rubber is hardly exposed on the side, and the ground contact surface is substantially only a fiber layer, and the anti-slip effect is reduced. If it is 10.0 mm ² or more, the proportion of the water-absorbent fiber sheet 2 occupying the contact surface is too small. The anti-slip effect due to water absorption of the water-absorbent fiber sheet 2 cannot be expected. In addition, the thickness and the like of the fiber portion of the water-absorbent fiber sheet 2 are also appropriately selected.
A rubber that can expose 40 to 90% of the rubber on the ground surface side is selected.

The elongation at break of the mesh-like water-absorbent fiber sheet 2 is at least 30 with respect to the longitudinal direction of the shoe sole.
% Or more. The elongation at break in the present invention,
The initial length is l ₀ , the extended length is Δl, and Δl / l ₀
× 100 (%). Here, when the elongation at break is 30% or less, the water-absorbent fiber sheet 2 does not cope well with the unevenness of the shoe sole contact surface design when vulcanized and integrated with the unvulcanized rubber, and Breakage occurs and the design becomes poor, and the anti-slip effect also decreases.

After the unvulcanized rubber fabric 1 and the water-absorbent fiber sheet 2 of the present invention obtained as described above are placed in the voids M for forming a slip-resistant body for shoe soles, as shown in FIG. After the unvulcanized rubber fabric 1 and the water-absorbent fiber sheet 2 are vulcanized and integrated by heating and pressurizing in a conventional manner, the mold is opened and taken out to obtain an anti-slip body 6 for a shoe sole as shown in FIG. .
The anti-slip body 6 for a sole is formed of a rubber layer 1 'and a water-absorbent fiber layer 2' laminated and integrated on the sole-design surface 1 "side of the rubber layer 1 '. The rubber layer 1 ′ is exposed from the mesh portion 2.

In a preferred embodiment, the non-vulcanized rubber cloth 1 is mixed with a water-absorbing material such as a water-absorbing pile to form the slip-proof body 6 for a shoe sole according to the present invention. Even when the contact surface design is worn by walking or the like, the water-absorbing material in the rubber layer 1 'absorbs the moisture on the ice and snow surface, and the anti-slip effect is obtained, which is preferable. The amount of the water-absorbing material to be added to the unvulcanized rubber material 1 is too large, the physical properties of the rubber deteriorate, and if the amount is too small, the effect of addition is lost. 0.
3-20 parts by weight are preferred.

FIG. 5 is an explanatory view showing another embodiment of the present invention. Here, a plurality of adjacent water-absorbent fiber sheets 2a, 2b, 2c, 2d having different colors and mesh shapes are laminated and integrated with the rubber 1a so as to present a single sheet. As described above, if a plurality of water-absorbent fiber sheets having different colors and mesh shapes are used in combination, it is possible to provide various designs to the contact surface side.

Although the embodiment of the present invention has been described above, the present invention is not necessarily limited to this embodiment, and even if there are changes within a range not departing from the gist, the present invention is included in the present invention.

For example, although the embodiment has been described with reference to the anti-slip body for a shoe sole, the present invention is not limited to this, and the present invention is also applicable to a shoe sole in which the entire shoe sole is formed of a rubber component and a method of manufacturing the same.

[0022]

As described above, the anti-slip body for a shoe sole according to the present invention is different from the conventional one in that a hard non-water-absorbing fiber is blended in a rubber component and the fiber grips an ice surface to obtain an anti-slip effect. In addition, a network-like water-absorbent fiber sheet is laminated and integrated on the shoe sole tread surface side of the anti-slip body body made of rubber component, and the rubber is exposed from the mesh part to the tread surface side, so that it can be on ice and snow surface or frozen surface etc. In addition to the anti-slip properties of the rubber itself during walking, the water-absorbing fiber layer on the ground surface side effectively absorbs water generated on the ice surface due to dynamic abrasion, and can exhibit an excellent anti-slip effect.

In addition, since the mesh-shaped water-absorbent fiber sheet is laminated and integrated on the shoe sole grounding surface side of the body of the slip-resistant body, the slip-proof effect of the water-absorbent fiber can be visually recognized at a glance. The anti-slip effect can be appealed in design.

Further, without coloring the rubber sheet itself,
By simply selecting the water-absorbent fiber sheet of various colors and shapes as appropriate, the design of the ground contact surface can be freely changed, and a slip-proof body for shoe soles having a high design property can be obtained.

According to the third aspect of the present invention, for example, there is no need to change existing manufacturing equipment at all.
The antiskid body for shoe soles of the present invention can be efficiently formed.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing one embodiment of a material for forming an anti-skid body for a sole used in the anti-slip body for a sole of the present invention.

FIG. 2 is an explanatory view showing one embodiment of a step of forming a slip-resistant body for a shoe sole according to the present invention.

FIG. 3 is an explanatory view showing one embodiment of a step of forming a slip-resistant body for a shoe sole according to the present invention.

FIG. 4 is a cross-sectional view showing an embodiment of the antiskid body for a shoe sole according to the present invention.

FIG. 5 is an explanatory view showing another embodiment of the antiskid body for soles of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Unvulcanized rubber cloth 1 'Rubber layer 1 "Sole design surface 1" 2 Water-absorbent fiber sheet 2' Water-absorbent fiber layer 3 Design mold 3 'Sole design surface 4 Cover mold M Air gap for body molding

Claims (5)

[Claims] 1. An anti-slip body for a shoe sole attached to at least a part of the anti-slip surface of a shoe sole, wherein the anti-slip body for a shoe sole has a sole surface ground surface design formed on one surface of a main body thereof. A non-slip body for a shoe sole, wherein a mesh-like water-absorbent fiber sheet is laminated and integrated on at least a part of the sole contact surface design side. 2. The slip-proof body for a shoe sole according to claim 1, wherein the ground-contact side of the slip-proof body for a shoe sole exposes the slip-proof body for a shoe sole by 40 to 90%. 3. The anti-slip body for a shoe sole comprises a rubber component, and 0.3 to 20 parts by weight of a water-absorbing material is blended with 100 parts by weight of the rubber component. 3. The anti-slip body for a shoe sole according to claim 2. 4. The elongation at break of the water-absorbent fiber sheet,
The anti-slip body for a shoe sole according to claim 1, wherein the amount is at least 30% or more with respect to a length direction of the shoe sole. 5. A method for manufacturing a slip-proof body for a sole, which is formed by a design mold having a sole-shaped design surface for forming a sole contact surface design, and a lid mold fitted to the design mold. A mesh-shaped water-absorbent fiber sheet is laid on the side of the shoe sole design-formed surface in the void for forming a slip-resistant body for a sole formed by the mold, and then an unvulcanized rubber fabric is stacked and loaded. A method for producing a slip-resistant body for shoe soles, comprising heating and pressurizing the rubber cloth and the network-like water-absorbent fiber sheet by vulcanization and integration in a usual manner, and cutting the resultant into a predetermined shape.