JP2000236902A - Skid-proof sandal and process therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an overshoes-type sandal which gives an excellent skid- proof effect and which does not damage a floor surface even if used for an indoor work. SOLUTION: A sand-paper-like skid-proof sheet 4 precut to a predetermined shape and a sole 2 made of a rubber-like composition are integrally formed. For the skid-proof sheet 4, a base material of waterproof paper or cloth is coated with a resin layer, and granular substance of an artificial or natural material is scattered over the resin layer coated thereon and further applying resin over the granular substance to form a resin layer.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a non-slip sandal and a method for manufacturing the sandal, and more particularly to a so-called overshoe type anti-slip sandal which is worn on shoes so that the anti-slip effect can be maintained for a long time. And a method of manufacturing the same.

[0002]

2. Description of the Related Art Generally, it is effective to wear boots in a work environment such as a boat or a kitchen where splashing of water is unavoidable, but it is called a sipe or a slit formed in a shoe sole. The anti-slip effect may not always be sufficient with only the anti-slip irregularities.

[0003] In particular, for example, when waxing is applied to the P tiles on the floor surface during cleaning work in a building, the anti-slip effect of boots or general shoe soles on the wax before drying is almost zero. Can't expect.

[0004] For this reason, it has been conventionally attempted to attach a non-slip accessory made of metal, resin, or the like to the boots or the soles of general shoes. Although excellent in terms of the anti-slip effect, there is a risk of damaging the floor surface, and there is still room for improvement.

[0005] The present invention has been made in view of the above background, in particular, while assuming a so-called overshoes type non-slip sandals to be worn on shoes,
Even when used for indoor work, it does not damage the floor etc.
Another object of the present invention is to provide an anti-slip sandal and a method of manufacturing the anti-slip sandal so that a necessary and sufficient anti-slip effect can be obtained.

[0006]

SUMMARY OF THE INVENTION The invention according to claim 1 is an overshoe-type non-slip sandal which can be worn repeatedly as a shoe, comprising a sandpaper-shaped non-slip sheet cut into a predetermined shape and a rubber. And a bottom made of a liquid composition.

[0007] As long as it is an overshoe-type non-slip sandal, means for attaching the sandal to the shoe is indispensable.

Here, the above-mentioned sandpaper-like non-slip sheet must be able to achieve both an anti-slip effect and not to damage a floor or the like. Is suitable for medium or finer than # 80, and for outdoor work handling oils, coarse type of # 60 or less is suitable. Further, the rubbery composition includes SBR and N
R or an elastomer is used.

The invention described in claim 2 is the first invention.
The non-slip sheet according to the invention described in the above, the granules made of an artificial material or a natural material are scattered and adhered and fixed on the resin layer applied to the water-resistant paper or cloth base material, and the resin is again formed on the granules. Is applied to form a resin layer.

As the resin layer, a phenol resin-based or epoxy resin-based material is mainly suitable, and on the other hand, as a granular material, an artificial material such as alumina or silicon carbide or a natural material such as diamond, garnet, emery, or silica stone is used. Is used.

The present invention according to claim 3 is a method for producing an overshoe type anti-slip sandal which is worn as a pair of shoes, wherein the artificial material or the synthetic resin is coated on a resin layer applied to a waterproof paper or cloth base material. A step of cutting the non-slip sheet formed of a natural material into a predetermined shape by scattering and adhering and fixing a granular material made of a natural material, and further applying a resin from above the granular material to form a resin layer; and cutting into the predetermined shape The method further comprises the steps of: laminating the anti-slip sheet and an unvulcanized rubber-like composition sheet to be the bottom, vulcanizing and press-bonding them, and integrally forming them.

According to a fourth aspect of the present invention, the rubber-like composition sheet according to the third aspect of the present invention is formed in advance to be larger than a predetermined bottom shape, and is cut into a predetermined bottom shape after vulcanization and pressure bonding. It is characterized by including a process.

According to a fifth aspect of the present invention, prior to the vulcanization and pressure bonding of the non-slip sheet and the rubber-like composition sheet according to the third or fourth aspect of the invention, a polybutadiene-based or the like is preliminarily applied to the joining surface of the two. The method is characterized by including a step of applying an adhesive.

Therefore, according to the first aspect of the present invention,
Because it is molded integrally when molding the bottom made of a rubber-like composition, the non-slip sheet is less likely to peel off than when a non-slip sheet is pasted on the bottom later, and the original non-slip sheet The effect can be maintained for a long time. In addition, since the non-slip sheet itself is in the form of a sandpaper, it does not damage the floor surface even when used for indoor work or the like.

In particular, as in the second aspect of the invention, as an anti-slip sheet, a granular material made of an artificial material or a natural material is scattered over a resin layer applied to a water-resistant paper or a cloth base material, and adhered and fixed. Furthermore, by using a resin layer formed by applying a resin again from above the granular material, the above-described anti-slip effect becomes more remarkable.

According to the third and fourth aspects of the present invention, as a method for producing the sandals, the anti-slip sheet and the unvulcanized rubber-like composition sheet according to the third aspect of the present invention are superimposed on each other. Since it is based on vulcanization and pressure bonding, both are extremely difficult to peel off,
Further, as in the invention according to claim 5, when an adhesive is applied in advance to the joint surface of both, the peeling resistance becomes more remarkable.

[0017]

According to the first aspect of the present invention, since the sandpaper-like anti-slip sheet is integrally formed on the sandal bottom made of the rubber-like composition, the anti-slip sheet is extremely hard to peel off. In addition, the original anti-slip effect can be maintained for a long period of time, and the floor can be prevented from being damaged even when used for indoor work.

According to the second aspect of the present invention, as the anti-slip sheet, a granular material made of an artificial material or a natural material is scattered over the resin layer applied to the base material, and the non-slip sheet is bonded and fixed. By using a resin layer formed by applying resin further on the granular material, the granular material, which is the main anti-slip effect, is prevented from falling off and the durability of the anti-slip sheet itself is improved There is an effect that can be made.

According to the third and fourth aspects of the present invention, since the above-described method is based on a method in which the anti-slip sheet and the rubber-like composition sheet are stacked and vulcanized and pressed, the anti-slipping sheet is resistant to peeling. In addition to being able to easily produce sandals having excellent properties, the mass productivity is high, and the peeling resistance is further improved when an adhesive is used in combination with the vulcanization bonding as in the invention according to claim 5. Has the effect of doing

[0020]

1 and 2 show a preferred first embodiment of the present invention.
FIG. 3 is a view showing an embodiment of the present invention, wherein a non-slip sandal 1 of a type having upper and lower insteps 3a and a belt 3b as shown in FIG.
Is shown.

As shown in FIG. 1, this anti-slip sandal 1 has a relatively flat full-size bottom 2, a front and rear upper cover 3a, and a belt 3b. The pair of front and rear cut sandpaper-shaped non-slip sheets 4 are integrally fixed.

To manufacture the sandals 1 having such a structure,
First, as shown in FIG. 4, a molten phenolic resin or epoxy resin is coated on a base material 5 made of water-resistant paper (paper) having a unit weight of 300 g / m ² or more, or a cloth made of cotton and synthetic fibers. Is applied to form a resin layer 6, and a granular material 7 of an artificial material or a natural material is scattered over the resin layer 6 and adhered, and a phenol resin or an epoxy resin is applied again to further increase the adhesive strength, and the same as above. Is formed. Then, in this state, the base material of the non-slip sheet 4 in the form of sandpaper is formed by sufficiently drying and solidifying in a hot blast stove.

When an artificial material is used as the above-mentioned granular material 7, for example, silicon carbide or alumina is used, and when a natural material is used, any one of diamond, garnet, emery and quartzite is used. This granular material 7
The particle size of the sandpaper is appropriately selected according to the degree of the required anti-slip effect. For example, for sandals used in indoor work in a building or the like, the sandpaper equivalent A medium or fine mesh of 80 or more is preferred, and a sandal with a coarse mesh of # 60 or less is also desirable for slip prevention of sandals used in outdoor work handling oils.

The base material of the non-slip sheet thus formed is cut in advance according to the required shape of the non-slip sheet 4.

Next, as shown in FIG. 5A, the non-slip side of the anti-slip sheet 4 is set on the lower die 10 of the molding die 9 with the non-slip side facing down, and SBR or NR is set therefrom. Alternatively, after kneading an unvulcanized rubber-like composition sheet 12 mainly containing an elastomer or the like, the upper mold 11
Are lowered, and both are vulcanized and pressed under a pressurized and heated state. At this time, the vulcanization / bonding alone has sufficient peeling resistance, but in order to increase the adhesive strength of the two and provide more peeling resistance, the polybutadiene is added to the anti-slip sheet 4 before vulcanization / bonding. Adhesive (trade name: MC-5)
0) is applied. As a result, the non-slip sheet 4 is buried in the rubber-like composition sheet 12 and joined in such a manner as to be substantially flush with the surface of the sheet 4,
An intermediate molded article 13 having a two-layer structure is obtained.

Next, the intermediate molded product 13 is turned over and set on the lower die 15 of the punching die 14 as shown in FIG. Then, the upper mold 16 is lowered to punch out the intermediate molded product 13 into a predetermined shape, thereby obtaining the bottom 2 integrally formed with the anti-slip sheet 4.

Then, as shown in FIGS. 1 to 3, the upper 3a and the belt 3b are connected to the bottom 2 by known means such as welding or bonding to complete the non-slip sandal 1 shown in FIG.

Here, the shape of the anti-slip sheet 4 can be set arbitrarily. For example, in addition to the shape shown in FIG.
The shape shown in FIGS. 6A and 6B may be used.

The anti-slip sandals 1 formed in this manner were used for waxing the floor in a building in the form shown in FIG. 3, and the anti-slip effect was extremely good. It was found that it did not hurt.

FIGS. 7 and 8 show a preferred second embodiment of the present invention. As shown in FIG. 9, a non-slip type having a bottom 22 only in the front half from the toe to the arch is used. An example of the sandals 21 is shown.

As shown in FIGS. 7 to 9, the anti-slip sandal 21 has a relatively flat bottom 22 having only a half of the normal front half, an upper 23, and a heel extending from the upper 23. And a rubber band 24 connected so as to protrude. A pair of non-slip sheets 25 in the form of sandpaper cut into a curved shape are integrally fixed to the bottom 22 so as to form a substantially horseshoe shape. Things.

The bottom 22 of the anti-slip sandals 21
The method of joining the non-slip sheet 25 with the anti-slip sheet 25 is exactly the same as that of the first embodiment. The connection is completed and completed.

In this embodiment, the same effects as those of the first embodiment can be obtained, and in addition to the shoes 50 or boots 51, the present embodiment is superior to the first embodiment. .

[Brief description of the drawings]

FIG. 1 is a view showing a first embodiment of a non-slip sandal according to the present invention, wherein (A) is a side view thereof, and (B) is a bottom view of FIG. 1 (A).

FIG. 2 is a plan view of the sandals shown in FIG.

3 (A) and 3 (B) are explanatory diagrams of usage of the sandals shown in FIGS. 1 and 2. FIG.

FIG. 4 is an enlarged sectional view of a main part of the anti-slip sheet shown in FIG.

FIG. 5 is a process explanatory view showing a procedure for manufacturing the sandals shown in FIG. 1;

6 (A) and 6 (B) are bottom views showing modified examples of the anti-slip sheet shown in FIG. 1 (B).

FIG. 7 is a plan view showing a second embodiment of the present invention.

8 (A) is an enlarged side view of the sandal shown in FIG. 7,
(B) is a bottom view of FIG.

FIG. 9 is an explanatory view showing a usage form of the sandals shown in FIGS.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Non-slip sandals 2 ... Bottom 4 ... Non-slip sheet 5 ... Base material 6, 8 ... Resin layer 7 ... Granular body 12 ... Rubber-like composition sheet 21 ... Non-slip sandals 22 ... Bottom 25 ... Non-slip sheet

Claims (5)

[Claims] 1. An overshoe-type non-slip sandal to be worn as a shoe, wherein a sandpaper-shaped anti-slip sheet cut into a predetermined shape in advance and a bottom made of a rubber-like composition are integrally formed. Features non-slip sandals. 2. The non-slip sheet is formed by adhering and fixing granules made of an artificial material or a natural material on a resin layer applied to a water-resistant paper or a cloth substrate, and then re-adhering the granules from the granules. The non-slip sandal according to claim 1, wherein a resin layer is formed by applying a resin. 3. A method of manufacturing an overshoe-type non-slip sandal which is worn repeatedly as a shoe, comprising the steps of: forming a granular material made of an artificial material or a natural material on a resin layer applied to a water-resistant paper or a fabric base material. A step of cutting a non-slip sheet formed of a resin layer by applying a resin again from above the granular material to form a resin layer, and a non-slip sheet cut into the predetermined shape and a bottom. A step of laminating an unvulcanized rubber-like composition sheet to be formed and vulcanizing and press-bonding the two to form an integral body. 4. The method according to claim 3, wherein the rubber-like composition sheet is formed larger than a predetermined bottom shape in advance, and includes a step of cutting into a predetermined bottom shape after vulcanization-compression bonding. A method for producing the non-slip sandal according to the above. 5. The method according to claim 3, further comprising a step of applying an adhesive to a joint surface between the anti-slip sheet and the rubber-like composition sheet prior to vulcanization-bonding.
Or the method for producing a non-slip sandal according to 4.