JPH0627634Y2 - Anti-slip body - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention relates to an anti-slip body, and more particularly to an anti-slip body that is made of a polymer elastic material and does not lose its anti-slip property for a long time.

<Prior Art> An anti-slip body, such as an outer sole of a shoe, has a good anti-slip property in consideration of safety during wearing. In order to impart anti-slip properties to the outer sole of the shoe, a method of attaching metal fittings such as spikes to the ground contact surface, or a method of forming a large wave-shaped convex design that is substantially orthogonal to the walking direction on the ground contact surface of the outer sole, as well as A method of forming a design with a triangular, semicircular, or suction cup shape in the vertical cross section was adopted.

<Problems to be solved by the device> The outer sole on which spikes and the like are attached by the former method has sufficient slip resistance, but the spike itself is expensive and requires time and effort to install, which is a major factor in increasing shoe cost. In addition, the outer bottom with various designs of the latter on the ground contact surface is initially anti-slip, but the design for anti-slip wears out while wearing the shoes, and the surface becomes almost smooth. There was a drawback that slip resistance was lost.

In view of the above circumstances, the present invention aims to provide an anti-slip body that does not use metal fittings such as spikes and can retain the anti-slip property for a long time even though it is an outer sole made of only a polymeric elastic body. Is.

<Means for Solving the Problems> As shown in a longitudinal sectional view of a part of FIG. 1, the present invention is directed to a granular elastic polymer matrix (1) having a large amount of wear in a matrix of the elastic polymer (1) having a small wear. The gist of the present invention is a non-slip body characterized by the mixture of ().

Here, examples of the polymer elastic body having small wear include polybutadiene, acrylonitrile butadiene copolymer,
A vulcanizate obtained by mainly blending a high-reinforcing filler such as white carbon or carbon black with a single or blend polymer such as polyurethane, styrene-butadiene copolymer, polyisoprene, etc. For example, a vulcanized product obtained by mainly blending a single polymer such as polyisoprene or styrene-butadiene copolymer or a blend polymer with a non-reinforcing filler such as calcium carbonate or magnesium carbonate is used.

The former is Akron wear (load during wear test is 5 ponts x 1
The angle of 0 ° is 1.1 or less, and the latter is 1.4 or more. Generally, if the difference between the two is 0.3 or more, the object of the present invention can be achieved. The particle size of the highly elastic polymer elastic body is usually in the range of 0.5 to 5 mm.

<Action> The slip-proof body will be described by taking the outer sole of the shoe as an example. At the initial stage of wearing the shoe, the shoe is provided with a large number of protrusions (3) provided on the lower surface as shown in FIG. Sliding inside can be prevented. However, if the conventional outsole
When (3) wears out and disappears, the anti-skid body usually disappears.

However, in the case of the outer sole of the present invention, the slip resistance is not impaired even if the protrusion (3) disappears due to the following action. This will be described with reference to a partial vertical sectional view of FIG.

1.2 to 1.5 times the weight of the body when walking and 2.5 to 3.0 times the weight of the body when walking, and 2.5 to 3.0 times the weight when jogging, so the polymer elastic matrix matrix has little wear on the ground contact surface (1) The granular high-polymer elastic body (2) present in the high-polymer elastic body matrix (1) is also compressed. At this time, although the polymer elastic body matrix (1) is not so much worn, the granular polymer elastic body (2) is greatly worn, and as a result, the recesses (4) and (4) are formed.

Therefore, even if the protrusion (3) disappears and becomes a smooth surface due to repeated wearing etc., a large number of recesses (4) are formed after that, so that a suction cup effect and an edge effect occur and a long time is obtained. Anti-slip property is maintained over.

<Example> Formulation A Polyisoprene 70 parts by weight Polybutadiene 30 〃 Zinc oxide 5 〃 Stearic acid 1 〃 Vulcanization accelerator DM 1.5 〃 Vulcanization accelerator TS 0.2 〃 White carbon 35 〃 Diethylene glycol 3 〃 Sulfur 2 〃 Blend B Polyisoprene 70 parts by weight Styrene butadiene copolymer 30 〃 Zinc oxide 5 〃 Vulcanization accelerator DM 1.5 〃 Vulcanization accelerator TS 0.2 〃 Heavy calcium carbonate 50 〃 Sulfur 2 〃 Blend B roll machine Kneading was performed, and press vulcanization was performed with a mold having a size of 600 mm × 300 mm and a depth of 5 mm to obtain a vulcanized sheet, which was pulverized with a freeze pulverizer to a particle size of 1.0 to 2.5 mm. . Compound A was kneaded by a roll machine, and at the final stage of kneading, the roll interval was adjusted to 5 to 7 mm, and the granular vulcanized rubber 50 was used.
PHR is added, sheeting is performed, and press vulcanization (at 160 ° C for 5 minutes) is performed using a mold that can form a large wave design with a wave height of 3 mm on the entire surface using the sheet. Got an outsole.

As a control example, an outer bottom obtained by kneading the compound A and press-vulcanizing it under the same conditions with the same mold was used. The physical properties of the compound A and the compound B used above were as follows.

Formulation A Formulation B Hardness (JIS A) 50 50 Akron wear ^* 0.07 0.3 *: The load during wear was 5 pounds x 10 °.

Bond both outer soles to the bottom of the jogging shoe instep,
After 10 days of jogging for 10 km / day, the design of the contact surface was worn out and slippery in the control example, but the outer bottom of the present invention has anti-slip action despite the worn out design. It wasn't lost at all.

<Effect> Even if the anti-slip body of the present invention comes into violent contact with another object and the ground contact surface becomes provisionally smooth, the anti-slip effect is always maintained due to the suction effect and the edge effect.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a part of the antiskid body, and FIG. 2 is a vertical cross-sectional view of a part of the anti-skid body for explaining the operation thereof. (1) …… Polymer elastic matrix with low wear, (2)…
… Particulate polymer elastic body with high wear, (3) …… Protrusions, (4)
…… A recess.

Claims (1)

[Scope of utility model registration request] 1. A polymer elastic matrix with low wear.
An anti-skid body characterized in that a granular high-polymer elastic body (2) is mixed in (1).