JP2903164B2 - Anti-slip slash shoe and method of manufacturing the same - Google Patents

Description

Description: FIELD OF THE INVENTION The present invention relates to a novel anti-slip slash shoe and a method for producing the same, and more particularly to a non-slip slash shoe in which zinc oxide whiskers are contained in the sole of the shoe. And a method for producing the same. In the present invention, the anti-slip property means a property that is hard to slip on a snowy road, a frozen road surface, on ice, or the like.

[Related Art] Conventionally, various proposals have been made as a measure against slipperiness of a shoe sole. For example, the bottom of rubber boots has a deep corrugated waveform from old times, and in order to increase the coefficient of friction of the sole, glue sand to the sole with an adhesive or use a non-slip metal fitting on the sole. They can be worn or spiked shoes.

[Problems to be solved by the invention]

In order to install the anti-slip bracket, it is necessary to devise and expense,
The metal fittings must be removable, and it takes time to attach and detach the metal fittings. It takes time and effort to attach the sand with an adhesive,
Moreover, the durability of the anti-slip performance is insufficient.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a novel anti-slip slash shoe that is easy to manufacture and durable, and a method of manufacturing the same.

The present inventors have conducted intensive studies to achieve the above object, and as a result, have found that a shoe sole formed by slush molding using a synthetic resin paste containing zinc oxide whiskers can achieve this object. The invention has been reached.

[Means for solving the problem]

That is, the present invention relates to a non-slip slash shoe containing zinc oxide whiskers and a method for producing the same.

The zinc oxide whisker used in the present invention is a kind of fine mineral fiber and is a three-dimensional whisker made of a single crystal having a needle-like tetrapod shape, and has a specific gravity of 5.78, which is heavy, strength, heat resistance, conductivity, and heat. It has excellent conductivity. FIG. 1 shows an enlarged schematic view of the shape of zinc oxide whiskers. This zinc oxide whisker can be obtained, for example, from Matsushita Electric Industrial Co., Ltd.

The content of this zinc oxide whisker depends on the desired degree of anti-slip property to be imparted, and the synthetic resin paste 10
It is selected from the range of 1 to 30 parts by weight, preferably 3 to 8 parts by weight based on 0 parts by weight. If the amount is less than 1 part by weight, the anti-slip property is insufficiently imparted. If the amount is more than 30 parts by weight, the shoe sole becomes too heavy because of the moldability and durability of the sole and the sole becomes too heavy. It is.

The anti-slip sole surface of the present invention containing zinc oxide whiskers has a needle-like tetrapod shape unique to this whisker when viewed with an electron microscope. Has formed.

The present invention relates to a method for producing a non-slip slash shoe, wherein slush molding is performed using a synthetic resin paste containing zinc oxide whiskers.

A molding method using a slash mold called a so-called slash method is known as one of shoe manufacturing methods. In this molding method, a synthetic resin paste, for example, a polyvinyl chloride paste (hereinafter referred to as a PVC paste) is poured into a cylindrical shoe mold, and the surroundings of the mold are heated for a short time to gel the PVC paste. Then, the excess paste that has not been gelled is discharged out of the mold, and finally, the residual gelled paste is further heated and completely solidified. In this method, the shoe is made by incorporating inner socks, and fasteners etc. are attached if necessary.

Unlike shoes made by injection molding, shoes obtained by this slush molding method can be molded so that there are no joints or traces of injection and no seams at all, so waterproof,
Excellent moisture resistance. In addition, since the mold is actually made of shoes made of natural leather, synthetic leather, cloth, etc., and the surface thereof is plated with metal, the actual surface condition of the shoes, for example, leather grain or stitching Since the delicate hand feeling is transferred to the inner surface of the mold as it is, there is an advantage that molded shoes with rich design expression can be easily obtained. Also the inner
Depending on the selection of socks (backing material), shoes suitable for a wide range of applications, such as rain shoes and winter shoes, can be manufactured.

The PVC paste is composed of the following polymer, plasticizer and stabilizer. As the polymer, a vinyl chloride paste resin having a polymerization degree of 800 to 2000, which is obtained by emulsion polymerization, microsuspension polymerization, or the like, is used. As the plasticizer, a phthalic acid derivative such as dioctyl phthalate (DOP) or butylbenzyl phthalate is used. (BBP), an adipic acid derivative, for example, dioctyl adipate (DOA) or the like is used alone or as a mixture of two or more. As the stabilizer, metal soaps such as barium stearate and organic tin compounds such as butyltin mercaptan can be used.

PVC paste without zinc oxide whisker has a viscosity of 5
Although it is 00 to 2000 cps, in the case of a zinc oxide whisker-containing paste, the viscosity is reduced to 200 cps to 1000 cps by using a thinner such as mineral spirit in order to facilitate whisker precipitation.

Since the specific gravity of the PVC paste containing zinc oxide whisker is 5.78, which is extremely large as compared with the specific gravity of the PVC paste of 1.1 to 1.3, the whisker is likely to settle due to its own weight. Therefore, the whiskers in the whisker-containing PVC paste that has been poured into the cylindrical mold can be easily left standing,
Gather at the bottom of the shoe in the mold. In this case, a whisker-containing paste may be first injected into the mold to form a shoe sole portion, and a whisker-free paste may be injected thereon.

Whisker is contained in the bottom of the shoe mold film molded and demolded using zinc oxide whisker-containing PVC paste, especially in the protrusions of the shoe sole unevenness, and the whisker content in the slash cylinder that is not required When viewed from an enlarged scale, the sole surface of the sole is shaped like a spike buried on one side due to the needle-like tetrapod shape unique to the whisker.

[Action]

The anti-slip shoe of the present invention has a tetrapod-shaped needle-like single crystal (needle body length: 3 to 40 μm, thickness: 0.5 to 3 μm) on the sole of the shoe.
Contains a high concentration of zinc oxide single crystal whiskers, which is effective in preventing the shoe sole from slipping.

〔The invention's effect〕

The anti-slip shoe of the present invention and the method for manufacturing the same have the following advantages.

Because of the tetrapod-type three-dimensional whisker that has a face on the sole surface, the sole has a large anti-slip effect.

Since the zinc oxide whiskers are localized on the sole of the shoe, the amount of use is small, and it is economical.

Since the strength of the zinc oxide whisker is large, the durability and the durability of the anti-slip effect of the shoe sole are large.

By the slush molding method, zinc oxide whiskers settle on the convex portions of the bottom of the shoe sole due to sedimentation, thereby enhancing the anti-slip effect and simplifying the production of anti-slip slash shoes.

Since the tubular portion of the slash shoe contains almost no zinc oxide whisker, the advantages of the slash shoe such as design and feeling can be utilized as it is.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an enlarged schematic view showing the shape of zinc oxide whiskers which are one type of fine mineral fibers used in the present invention.

Claims (2)

(57) [Claims] 1. A non-slip slash shoe comprising zinc oxide whiskers in a shoe sole. 2. A viscosity containing zinc oxide whiskers of 200 to 100.
A method for producing anti-slip slash shoes, wherein slush molding is performed using a synthetic resin paste having a specific gravity of 1.1 to 1.3 cps.