JPH06169802A - Special-shape embossment, its manufacture, and shoe with embossment - Google Patents

Abstract

PURPOSE:To manufacture special-shape embossment improving the ground holding function, capable of reducing the possibility of a slip while running, and having large ground holding force very easily. CONSTITUTION:The whole of the ground plane 3 of an embossment 2 is formed into a recessed shape, and the peripheral section of the ground plane 3 is formed acute against the side face of the embossment 2. A base sheet 34 is adhered to one face of a hole plate 19, an embossing liquid raw material 36 is poured into hole sections 18 of a hole plate 18 from the other face of the hole plate 19, an embossing liquid raw material 36 is poured into the hole sections 18 of the hole plate 19 from the other face of the hole plate 19, then the embossing liquid raw material liquid level in the hole sections 18 on the other face side of the hole plate 19 is set to the recessed state by squeezing, then the embossing liquid raw material 36 is hardened and released.

Description

Detailed Description of the Invention

[0001]

[Object of the Invention]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anti-slip embossing for a shoe sole of an athletic shoe, a method for manufacturing the same, and a shoe having the embossing.

[0002]

BACKGROUND OF THE INVENTION In recent years, athletics often win or lose with a close difference of 1 / 100th of a second, and athletic shoes are required to have a certain level of functionality and high quality. In particular, various anti-slip embossing forms have been developed because the non-slip embossing of the ground contacting surface is directly related to the ground gripping force of the shoe.
However, the embossed form of the soles of the athletic shoes currently on the market is merely a change in the arrangement and connection of the embosses, and changes the shape of the embossed ground contact surface that is most relevant to the ground gripping force. At present, most of the products have not been commercialized due to the difficulty of molding.

[0003]

[Technical Items Attempted to Develop] The present invention has been made in view of such a background, and provides an embossing excellent in ground gripping force and a shoe having the embossing on the sole, and the embossing is extremely excellent. This is an attempt to develop a manufacturing method that can be easily manufactured.

[0004]

[Constitution of the invention]

[Means for Achieving the Object] That is, in the special shape embossing which is the first invention of the present application, in the embossing formed on the shoe sole, the grounding surface of the embossing is entirely formed in a concave shape,
The peripheral edge of the ground contact surface is formed at an acute angle with respect to the side surface of the emboss.

In the method for producing a specially shaped embossing which is the second invention of the present application, after the base sheet is adhered to one surface of the stencil and the embossing liquid raw material is poured from the other surface of the stencil into the holes of the stencil. The liquid surface of the embossed liquid raw material in the hole on the other surface side of the stencil plate is made concave by a squeegee treatment, and then the embossed liquid raw material is cured to remove the plate.

Further, in the shoe having the specially shaped embossing according to the third invention of the present application, the entire grounding surface of the embossing is formed in a concave shape, and the peripheral end portion of the grounding surface has an acute angle with respect to the side surface of the embossing. Is characterized in that it has an emboss formed on the shoe sole. The above objects are achieved by these inventions.

[0007]

In the specially shaped embossing of the present invention, the grounding surface of the embossing is concave, and the peripheral edge of the grounding surface is formed at an acute angle with respect to the side surface of the embossing. growing.

In the method for producing a specially shaped embossing of the present invention, a nonwoven fabric is adhered to one surface of the stencil, the embossing liquid raw material is poured from the other surface of the stencil, the other surface of the stencil is squeegeeed, and then the embossing liquid is applied. Since the raw material was cured and depressurized, the liquid level of the embossed liquid raw material was changed during the squeegee treatment due to the relationship of surface tension, contact angle, wetting, etc. between the embossed liquid raw material, the hole of the stencil and the tip of the squeegee tool. The embossed ground surface is formed in a concave state by recessing from the surface of the stencil and being cured and demolded as it is, and the peripheral edge portion of the ground surface is formed at an acute angle with respect to the embossed side surface.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the illustrated embodiment, taking the embossing 2 of the shoe sole of an athletic shoe 1 as an example. For convenience of description, the drawing is drawn so that the embossing is convex upward, and the following description is also adapted to this. One embossment 2 on the sole of the athletic shoe 1 has, for example, a substantially cylindrical shape as shown in an enlarged manner in FIG. 1, and a grounding surface 3 is formed on the upper surface of the embossing 2 in the figure, and a side surface is formed around the cylindrical shape. 4 is formed. The grounding surface 3 is formed in a recessed shape which is somewhat gentle, and the peripheral end portion 5 of the grounding surface 3 is formed at an acute angle with respect to the side surface 4. Such a structure is a characteristic configuration of the present invention and can be applied to various other embossings 2.

For example, the one shown in FIG. 2 (a) has a side surface 4 formed in a tapered shape, and the one shown in FIG. 2 (b) has a cross section formed in an oval shape. The above characteristic configuration is applied to the embossing. Furthermore, such a configuration can be applied to the continuous embossing 2. For example, as shown in FIG. 2C, the corrugated embossed ground plane 3 is formed in a concave shape, or as shown in FIG. 2D, the ring-shaped embossed ring ground plane 3 is formed in a concave shape. You may form in.

Next, a method of manufacturing the special shape embossing as described above will be described. Unlike the conventional embossing manufacturing method, this manufacturing method uses a stencil. Therefore, the preparation of the stencil will be described first, and then the embossing molding step will be described. Incidentally, forming an emboss by applying a stencil is also one of the features of the present invention, so that not only the cylindrical embossing but also the conventional method using an intaglio mold cannot be applied at all. FIG. 2 (c) above
The corrugated or ring-shaped grounding surface 3 as shown in (d) can also be molded.

(1) Preparation of stencil a) Method by sandblasting First, a desired embossed design is prepared, and this embossed design is used as the transferred material A, and as shown in FIG. To create. Since a camera is used in this method, the embossed design can be freely reduced or enlarged. Incidentally, as such a positive film, it is of course possible to apply other ones, but in order to clarify the boundary between the light-sensitive portion and the non-light-sensitive portion at the time of the subsequent exposure, in this embodiment, a thin and hard-tone film is used. Uses a squirrel film that provides contrast.

Next, as shown in FIG. 4A, the squirrel film 10 is brought into close contact with the photocurable resin film 12, and exposed from the squirrel film 10 side so as to correspond to a portion other than the embossed design of the squirrel film 10. The portion of the photocurable resin film 12 is cured.

The photo-curable resin film 12 serves as a sandblasting protection mask. For example, the photo-curable resin layer is sandwiched with a transparent film so that it can be peeled from both sides, and the transparent side on the side close to the lith film when used. It is convenient to use a film or a transparent film on the side close to the hard plate, which will be described later, after peeling off the film. Further, the photocurable resin film 12 is required to have durability against sandblast as described later. An example of the photo-curable resin film 12 that can be selected from this viewpoint is a urethane-based photosensitive film, which can withstand sandblasting even at a thickness of 100 μm. Of course, even if various resins are used, if the accuracy is not a problem, it is possible to increase the thickness and increase the durability to sandblasting. You can also select.

Here, the photocurable resin is, for example, a photosensitive resin obtained by introducing a styrylpyridinium group into a polyvinyl acetate / polyvinyl alcohol emulsion as a photosensitive group, and other natural water-soluble polymers such as carrageenan and gelatin, carboxymethyl cellulose and alginic acid. Semi-synthetic water-soluble polymers such as ammon, starch, methylaminopropyl ether, etc. and photopolymerization initiators such as benzophenone, thioxanthone, benzoin ether, etc. and monomers, dichromate, diazo resin, bisazide There is a mixed type which comprises a photo-crosslinking agent such as a compound.

The term "photo-curing" of a photo-curing resin means that when it is irradiated with electromagnetic waves having high energy such as visible light, ultraviolet rays, X-rays and electron beams, it absorbs energy to cause crosslinking, curing and insolubilization. The term "light" is a general term for electromagnetic waves with high energy.

Next, of the photocurable resin film 12, the non-photosensitive portion corresponding to the embossed design of the squirrel film 10 is rinsed with carbonated water using a brush B or the like as shown in FIG. 4 (b) and dried. After that, the mask 13 is formed by exposing again for the purpose of increasing the hardness of the exposed portion. Then, as shown in FIG. 4C, the mask 13 is brought into close contact with the surface of the hard plate 14 which is the original plate of the plate, and in this state the mask 1
Sandblasting is applied to the surface on the 3rd side. The mask 13
In order to bring the hard plate 14 into close contact with the hard plate 14, it is preferable to apply an adhesive to the hard plate 14 side in advance.

The hard plate 14 is made of a hard material and is suitable for sandblasting. For example, glass, ceramics, stone, artificial marble, and other fragile materials, as well as some difficulty in processing. It also includes metals and the like. It should be noted that, even if the glass plate among the hard plates 14 is broken, it is cheap and easy to obtain, and sandblasting is easy to perform. Workability is good because it can be processed.

The abrasive for blasting may be one normally used for etching tombstones, nameplates, etc., for example, natural silicon, garnet, silicon carbide carbon, random, artificial corundum and the like can be applied. Of course, selection of these abrasives will be made in consideration of the material of the hard plate 14, workability and the like.

Next, the etching process by sandblasting will be described. Using the hard plate 14 having the same thickness as the intended embossing length, as shown in FIG. 4C, an abrasive material is applied to form holes 18 by etching to form a stencil 19.
In this case, since the hole is easily tapered in the ordinary sandblasting as shown in FIG. 6, it is possible to use this to form the tapered embossing, or to use this taper as a draft. it can. With further development, it can also be used for forming embossments having a so-called gentle taper surface, such as a toe portion of a shoe sole, which rises while gently sloping. If the sandblast distance is set and blasting is performed for a long time, a hole having a vertical surface without a taper can be formed. Since the etched surface has a satin finish, it is preferable to apply a release agent before using the plate in order to improve the plate removing property.

Further, as shown in FIG. 7A, if the area a ₁ is _first etched to form the hole 18, and then the area a ₂ which partially overlaps the area a ₁ is partially etched, It is possible to form a stepped emboss as shown in FIG.

(B) Method of using a master mold As shown in FIG. 8 (a), a master mold 25 having a pattern similar to the embossed pattern of the shoe sole is prepared, and a magnetic metal 26 such as iron or nickel is sprayed on the master mold 25. To do. And this master mold 25
Mold resin 28 is poured between the respective convex portions 27 of FIG. 2 to heat-harden it, and as shown in FIG. 8B, the surface is ground to remove the magnetic metal 26 attached to the top surface of the convex portions 27 of the master mold 25. leave. Finally, by removing the master mold 25, as shown in FIG.
A stencil plate 19 having holes 18 as shown in (c) is obtained. Incidentally, in the stencil 19 as described above, the magnetic metal 26 is provided on the lower surface other than the holes 18, which serves to improve the adhesion between the base sheet and the stencil 19 by magnetic force as described later. However, the presence of the magnetic metal 26 is not necessarily required if the adhesion between the two can be improved by another method.

As a similar technique for imparting magnetism to the stencil 19 in such a method, a method of supporting magnetic powder on the stencil 19 can be adopted. As a concrete method thereof, when the molding resin 28 is in a liquid state, magnetic powder is mixed into the molding resin 28, which is poured into the master mold 25 to form the stencil 19.
Or a method of attaching magnetic powder to a stencil having no magnetism afterwards. Incidentally, the magnetic powder can be easily attached by a method of spraying the magnetic material into fine droplets with a gas flame, an arc flame, plasma or the like and spraying the magnetic material onto the stencil. In this method, the magnetic powder may adhere to the holes of the stencil, which may make it difficult to remove the plate. Therefore, it is necessary to use a mask or the like to prevent the magnetic substance from adhering to the holes. .

C) Method of Utilizing Photocurable Resin Film First, as shown in FIG. 9A, the photocurable resin is dried and molded into a film having a thickness of 2 mm to form a photocurable resin film 30. This film is the same as that described in the sandblast method, but a thicker film is applied according to the height of the emboss to be molded. As shown in FIG. 9 (a), the lower surface of this pre-exposure photocurable resin film 30 is wetted with water, and then adhered to a substrate 31 such as glass or aluminum plate,
Both are integrated by drying at about 70 ° C. for 5 to 10 minutes.
Thereafter, as shown in FIGS. 9B and 9C, a mask 32 having an embossed pattern of the shoe sole is brought into close contact with the pre-exposure photocurable resin film 30, and, for example, an ultrahigh pressure mercury lamp broadhand (365 nm, 5. After exposure at 7 mW / cm ² for 10 to 15 minutes, the mask 32 is removed, and the unexposed portion 33 is removed in a hot water shower using a brush or the like.

Next, the photocurable resin film 30 from which the unexposed portion 33 has been removed is dried at about 70 ° C. for about 30 minutes, the film is peeled off from the substrate 31, and then the magnetic metal 26 is sprayed, as shown in FIG. As shown in c), a stencil 19 having holes 18 formed in the unexposed portion 33 is created. When the stencil plate 19 is to be magnetized, magnetic powder may be applied as described above,
In addition to the film, the photocurable resin may be used by coating and drying a liquid one. In addition, since the photo-curing property of the photo-curing resin largely depends on its transparency, the amount of magnetic powder added is adjusted in view of the balance with the magnetic attraction force within the range of transparency, and the electron with higher energy level is used. Need to be cured using wire.

Further, since the photo-curable resin which can be developed by water is water-soluble before curing and is highly hydrophilic even after curing, embossing of shoe soles (specifically, urethane elastomer) in which oil-based raw materials are often used. Considering the releasability of the stencil, that is, the ability to remove the stencil 19 from the holes 18 having a thickness of several mm, it can be said to be a suitable type. The water used in the water development may be neutral or alkaline or acidic.

D) Other methods In addition to the above methods, holes may be formed in a metal plate, a resin plate or the like by etching, wire cutting, laser, punching, pressing or the like to form a stencil. Nowadays, according to the etching method, it is possible to form a stepped hole in a metal plate at a relatively low cost.

(2) Set of stencil and base sheet Next, as shown in FIG. 10, the stencil 19 is brought into close contact with the base sheet 34. If the adhesion between the base sheet 34 and the stencil plate 19 is poor, the liquid will seep out and appear as a handle around the embossing.
A cushion material is laid underneath and pressed firmly from the top of the stencil so as to ensure close contact.

Incidentally, as a method for adhering the base sheet 34 and the stencil plate 19 to each other, it is possible to use a vacuum or a method by adhesion. If it is poured, it will be sucked into the nonwoven fabric. Therefore, after all, it is difficult to suck the entire plate uniformly. Further, in the method using adhesive, it is necessary to apply the adhesive again each time. On the other hand, for example, in the method using the magnetic force described above,
The disconnection of the suction action can be reliably controlled, the suction action can be exerted almost uniformly on the entire surface, and the base sheet 34
The heating can be performed while maintaining the close contact between the stencil and the stencil 19.

In the preparation of the stencil, if the stencil 19 is not provided with a magnetic material, it is preferable that a cushioning material is laid and the stencil is brought into close contact with the stencil by pressing several points from above. When the body is provided, a strong permanent magnet plate 35 is prepared as shown in FIG. 11, a base sheet 34 is laid on the plate, and a stencil 19 is placed on the base sheet 34. The base sheet 34 is brought into close contact with the stencil plate 19 due to the action of magnetic attraction of 26 to the permanent magnet plate 35.

In this case, an electromagnet may be applied instead of the permanent magnet plate 35, the stencil 19 may be made of a magnetic material such as iron, or the stencil 19 may be embedded with a permanent magnet or another magnetic material. A configuration can also be adopted. Further, it is convenient for the magnet plate to take a form such as a permanent magnet chuck or an electromagnetic chuck which is widely used as a work holding device for a surface grinder, and such a member is set in place of the permanent magnet plate. Is good.

The base sheet 34 is made of synthetic resin, for example.
Conventional materials such as rubber and non-woven fabric can be applied. When a non-woven fabric is applied as the base sheet 34,
It may be either a thermoplastic fiber or a thermosetting fiber, and as one example, backskin-like artificial leather such as Exaine (registered trademark) manufactured by Toray Industries, Inc. can be applied. By the way, in this Exaine (registered trademark),
Since there are various colors such as yellow and orange, by making the embossing black, it is possible to give the shoe sole a design with a color contrast.

In addition to the usual non-woven fabric sheet having tear strength, tensile strength and abrasion resistance, thick film sheets and the like can be applied, and those having adhesive property and waterproof property by resin film coat can be used. It may be a fertilizer. As a normal non-woven sheet, one obtained by self-bonding elastic long fibers such as urethane is suitable. In this case, for example, if a thick non-woven sheet having a thickness of about 1 cm is applied, it is possible to provide a shoe sole having excellent cushioning properties. When the film sheet is used as the base sheet 34, it is difficult to express the contrast of the material in design as compared with artificial leather or non-woven fabric, but the color contrast can enhance the design.

(3) Pouring of embossed liquid raw material After setting the stencil 19 in close contact with the base sheet 34,
As shown in FIG. 12A, a polyurethane elastomer 36 is poured into the holes 18 of the stencil plate 19 as an example of an embossing liquid raw material. Incidentally, the polyurethane elastomer 36
As for the pouring method of (2), in addition to the method of mixing the two liquids of the raw material in the container as shown in FIG. As in a '), the two liquids of the raw materials may be sprayed while being mixed at the tip of the nozzle.

The polyurethane elastomer 36 is composed of a mixed liquid of a prepolymer and polyisocyanate,
This is to be cured by heating, and in this example, Nipolan (registered trademark) of Nippon Polyurethane Industry Co., Ltd., which is a prepolymer, and Pandex (registered trademark) of Dainippon Ink and Chemicals, Inc., which is a polyisocyanate, are used. The mixture was used. The mixed solution of the prepolymer and polyisocyanate, which has been degassed in vacuum, is poured into the holes 18. Further, as a polyurethane elastomer which is sprayed and supplied from a nozzle, there is a solventless quick-hardening urethane resin manufactured by Nippon Synthetic Chemical Industry Co., Ltd.

The two-component injection type thermosetting polyurethane, which requires a relatively long time to cure, such as Nipporan and Pandex, has a viscosity which once decreases as shown in FIG. Therefore, it is necessary to prevent the outflow from the stencil and the bleeding into the nonwoven fabric at the viscosity reduction point (point P in the figure). Therefore, it is preferable to mix a thickener with these raw materials.

A specific example of the thickener is AEROSIL (registered trademark) manufactured and sold by Nippon Aerosil Co., Ltd. This is the highest purity silica (S
iO ₂ 99.8%), is composed of ultrafine particles of 7 mμ to 50 mμ, and is a harmless substance having high surface area and high dispersibility. This AEROSIL (registered trademark) serves as a thickener because it can impart the rheological properties necessary for processing liquid substances such as polyester and epoxy resin with a small amount of addition due to the action of hydrogen cross-linking of silanol groups on the surface. It has the function of.

Incidentally, by adding a thickener and bringing the stencil 19 into close contact with the base sheet 34 by magnetic force, the polyurethane elastomer 36 is further prevented from oozing between the stencil 19 and the base sheet 34. The color boundary between the embossing and the non-woven fabric becomes clear and the contrast becomes clear, so that the design effect of the shoe sole can be enhanced.

As another means for changing the color of the embossed portion to the color of the other non-woven fabric portion, the non-woven fabric portion to be embossed is preliminarily printed with a contrasting color, and the embossed portion is formed using a transparent resin. You may do it. In this case, on the embossed pattern printed with the ink of a contrasting color, a stencil having a hole formed at a position corresponding to the embossed pattern is brought into close contact, and a transparent polyurethane resin is poured into the hole and then heat-cured, The stencil may be separated.

Further, a photo-curing resin can be applied as another embossing liquid raw material. The photo-curable resin used here has the same meaning as described above. Here, of the photo-curable resins, an ultraviolet-curable resin 39 that is cured in a short time by irradiation with ultraviolet rays will be described as an example. In addition, this thing has a photopolymerizable prepolymer, a photopolymerizable monomer, and a photoinitiator as a main component.

In selecting the ultraviolet curable resin 39,
A transparent or translucent material is applied before and after curing so that the ultraviolet rays reach the deep portion of the hole 18 or the color of the pattern printed on the base sheet 34 can be seen through. Moreover, since the emboss is used as a shoe sole in the present invention, the cured product has an appropriate elasticity,
The ultraviolet curable resin 39 is applied so that it can withstand the embossment of the shoe sole in terms of tensile strength, tear strength, abrasion resistance, and other required physical properties. In this case, in order to improve the tear strength, a filler such as short fibers may be mixed in the ultraviolet curable resin 39 to the extent that curing is not hindered.

Even if the adhesiveness between the base sheet 34 and the stencil plate 19 is increased, if the UV curable resin 39 seeps out, the color boundary between the base sheet 34 and the embossing is unclear. May become. In this case, if the UV curable resin 39 in which the mixing ratio of the photopolymerizable monomer that plays a role of a solvent is reduced or the UV curable resin 39 in which the mixing ratio of the photopolymerizable prepolymer having high viscosity is increased is applied, It is possible to prevent the cured resin 39 from seeping out. 12 and 13 show the embossing process when the polyurethane elastomer 36 is used as the embossing liquid material, and FIGS. 14 and 15 show the embossing process when the ultraviolet curable resin 39 is used as the embossing liquid material.
Shown in.

(4) Squeegee Treatment After pouring the polyurethane elastomer 36 or the ultraviolet curable resin 39 into the hole portion 18 of the stencil plate 19, FIG.
As shown in FIG. 14B or FIG. 14C, the squeegee tool 3
7, the polyurethane elastomer 36 or the ultraviolet curable resin 39 protruding from the upper surface of the hole 18 is present.
To remove. At this time, a part of the polyurethane elastomer 36 or the ultraviolet curable resin 39 in each hole 18 which exists immediately below the upper surface of the hole is used as a part of the embossed liquid raw material, the hole 18 of the stencil 19 and the tip of the squeegee tool 37. Due to the surface tension, contact angle, wetting, etc., the tip of the squeegee tool 37 is dragged and removed together. That is, by such a squeegee process, the upper portion of the embossed liquid raw material in each hole 18 is formed to be depressed in a concave shape throughout.

The squeegee treatment for making the upper portion of the embossed liquid raw material into a concave shape as described above does not require the use of a special squeegee tool or a squeegee method, but the embossed liquid raw material or the squeegee tool made of an ordinary material of the embodiment is used. This can be achieved by carefully performing a normal squeegee work. Further, the degree of the recessed state is related to factors such as the surface tension, the contact angle, and the wetting of the embossing liquid raw material, the hole 18 of the stencil 19 and the tip of the squeegee tool 37, rather than the squeegee technique.
Most of them are determined by the determination of these factors. Incidentally, the squeegeeed surface in this way defines the ground contact surface 3 of the embossing 2.

(5) Hardening and depressurization of embossing When the squeegee work is completed and the embossing liquid raw material is the polyurethane elastomer 36, FIG.
As shown in Fig. 13, the stencil 19 and the base sheet 34 are placed in the oven 38 while they are in close contact with each other, and heated at 120 ° C for 45 minutes to cure the polyurethane elastomer 36. In this state, the plate is removed as shown in Fig. 13 (a). After that, for the purpose of further stabilizing the elastomer, by heating in an oven at 90 ° C. for 600 minutes as shown in FIG. 13 (b), and then cooling and depressurizing the plate, the ground plane 3 is formed as shown in FIG. 13 (c). The embossment 2 is completed in which the embossing 2 is formed in a concave shape as a whole, and the peripheral end portion 5 of the grounding surface 3 is formed at an acute angle with respect to the side surface 4 of the embossing.

Further, the embossing liquid material is the ultraviolet curable resin 3
In the case of No. 9, as shown in FIG. 15 (a), ultraviolet rays are radiated by the ultraviolet ray irradiator 40 to cure the ultraviolet curing resin 39 within a relatively short time and emboss as shown in FIG. 15 (b). 2 is completed.

[0047]

According to the special shape embossing of the present invention, the grounding surface of the embossing is concave, and the peripheral edge of the grounding surface is formed at an acute angle with respect to the side surface of the embossing. It also improves and reduces the possibility of slipping while driving, which is expected to set a good record in athletics.

Further, in the method for producing a specially shaped embossing of the present invention, the liquid surface of the embossing liquid raw material is recessed from the surface of the stencil by performing squeegee treatment, and then cured and depressurized as it is so that the embossed ground surface is depressed. Therefore, the embossing having a large ground gripping force can be manufactured very easily.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment in which the specially shaped embossing of the present invention is applied to the sole of an athletic shoe.

FIG. 2 is a perspective view showing various embodiments of the special shape embossing of the present invention.

FIG. 3 is an explanatory view showing a step of making a stencil by sandblasting step by step, and is a perspective view showing a step of making a lith film from a transferred material.

FIG. 4 is a skeletal vertical cross-sectional view showing a process until a mask is created using this lith film and the stencil is created by sandblasting using this mask.

FIG. 5 is an enlarged perspective view showing a part of a stencil prepared by sandblasting.

FIG. 6 is a perspective view showing an embodiment in which a hole is provided with a taper.

FIG. 7 is an enlarged perspective view showing a part of a stencil having a stepped hole portion and a perspective view showing a stepped emboss made by the stencil.

FIG. 8 is an explanatory view showing step by step a process of making a stencil using a master mold.

FIG. 9 is an explanatory diagram showing stepwise a process of making a stencil when using a photocurable resin film.

FIG. 10 is a perspective view showing a state in which the stencil prepared by each of the above methods is set on the base sheet.

FIG. 11 is a vertical cross-sectional view showing a close contact state with a base sheet by a magnetic force action with a permanent magnet plate in the case where the stencil has a magnetic substance.

FIG. 12 is an explanatory view showing a step-by-step process of producing the specially shaped embossing of the present invention using a polyurethane elastomer, of which perspective views showing respective states of injecting a raw material liquid, squeegee, and heat curing. Is.

FIG. 13 is a perspective view showing the respective states of depressurization and reheating and the shoe sole provided with the specially shaped embossing of the present invention produced by these.

FIG. 14 is an explanatory view showing a step of forming a special shape emboss of the present invention using an ultraviolet curable resin, in which a stencil is set on a pattern-printed base sheet,
It is a perspective view showing a process after injecting the raw material liquid to a squeegee process.

FIG. 15 is a vertical cross-sectional view and a perspective view showing a process until the emboss is formed by irradiating ultraviolet rays, removing the stencil from the same, and FIG.

FIG. 16 is a graph showing a change in viscosity when a two-component injection type thermosetting polyurethane is heat-cured.

[Explanation of symbols]

1 Athletic Shoes 2 Embossing 3 Grounding Surface 4 Side 5 Peripheral Edge 10 Squirrel Film 12 Photocurable Resin Film 13 Mask 14 Hard Plate 18 Hole 19 Hole Plate 25 Master Type 26 Magnetic Metal 27 Convex 28 Type Resin 30 Photocurable Resin Film 31 Substrate 32 Mask 33 Unexposed part 34 Base sheet 35 Permanent magnet plate 36 Polyurethane elastomer 37 Squeegee tool 38 Oven 39 UV curable resin 40 UV illuminator A Subject B Brush a ₁ , a ₂ Range

Claims (3)

[Claims] 1. An embossing formed on a shoe sole, wherein a grounding surface of the embossing is formed in a concave shape as a whole, and a peripheral end portion of the grounding surface is formed at an acute angle with respect to a side surface of the embossing. Special shape embossing that is characterized. 2. The embossed liquid raw material liquid surface in the hole on the other surface side of the stencil after the base sheet is adhered to one surface of the stencil and the embossed liquid raw material is poured from the other surface of the stencil into the hole of the stencil. Is made into a concave state by a squeegee treatment, and then the embossing liquid raw material is cured to remove the plate, and a method for producing a specially shaped embossing. 3. The embossed ground contact surface is formed in a concave shape as a whole, and a peripheral end portion of the ground contact surface has an embossment formed at an acute angle with respect to a side surface of the embossment on a shoe sole. Shoes with a specially shaped emboss.