JP2588733Y2 - Waterproof shoes - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a waterproof shoe in which a waterproof cap and a waterproof or water-repellent midsole are sewn with a waterproof or water-repellent sewing thread and the soles are joined. About.

[0002]

2. Description of the Related Art Conventionally, boots (total rubber shoes, slash boots, injection boots, etc.) have been used as waterproof shoes.
However, since the part corresponding to the shell is made of rubber or vinyl chloride resin, it is unsatisfied with the compatibility with feet and the feeling of touch, especially in recent years when road conditions have improved and rainy days In Japan, where there are many cases, there is a strong demand for improved waterproofness of commonly used shoes. Therefore, as a waterproof shoe cap, woven fabric, vinyl leather, synthetic leather, or natural leather is used and finished by sewing sewing, and using water-repellent sewing threads against water penetration from seams Means such as heat-sealing a waterproof tape on the front or back surface of the sewn portion of the shell are employed. Further, ordinary sewing thread is generally used for connecting the shell to the midsole.

[0003]

By the way, in conventional general waterproof shoes with a sewing finish, when a waterproof tape is applied to the surface of a shell, the waterproof tape is worn or peeled off as the number of uses increases. Not only may the function be reduced, but it may also look bad. Also, when waterproof tape is welded to the sewn part on the back of the cap, the water that entered through the gap between the seam of the sewing machine and the water-repellent thread diffuses into the base cloth and wets the inside of the shoe, causing unpleasant wearing. This causes a problem that not only the comfort but also the heat retention is reduced. Furthermore, the water that has penetrated along the gap between the seam of the cap and the water-repellent thread gradually diffuses into the base cloth, and then passes along the gap between the seam and the seam that sewed the midsole and the cap, and the bottom There is a problem that water seeps on the surface and the back of the shell (or the back of the shell).

[0004] The present invention is based on the background of the prior art, and prevents water from infiltrating into the inside of the shoe, and diffuses water into the base fabric of the upper and lower surfaces of the insole and the back of the upper. It is an object of the present invention to obtain comfortable waterproof shoes that can prevent heat from leaking to the outside, maintain heat retention, and have excellent durability of a waterproof function.

[0005]

SUMMARY OF THE INVENTION The present invention provides a waterproof structure comprising a suede-like synthetic leather and a urethane resin layer laminated on the back surface thereof. After separately covering the cover portion and a back cover portion made of a material in which a fabric is bonded to one or both sides of a soft urethane foam, each of them is separately sewn with a waterproof or water-repellent sewing thread, and then the front cover portion and the back cover portion are sewn. A gap portion is provided between the cover portion and the respective peripheral edges are overlapped, and a cover formed by sewing together with the sewing thread, and a waterproof or water repellent insole are subjected to waterproof or water repellent treatment. A waterproof shoe characterized by being sewn with sewing threads and fitted with a shoe sole.

[0006]

In a waterproof shoe composed of suede-like synthetic leather and urethane resin according to the present invention, a waterproof structure is provided between a top cover having a waterproof structure and a back cover mainly formed of a soft urethane foam having heat insulation. Since the peripheral edge is sewn together by providing a gap, the heat insulation can be further enhanced by the gap, and the waterproof tape is covered and protected by the back cover part, so the use of waterproof shoes Peeling and abrasion are also prevented and durability is improved.

[0007] The waterproof structure of the upper shell portion is formed by laminating a urethane resin layer on the back surface of suede-like synthetic leather,
Waterproof tape is welded on the back side of the seam, so it will not flood into the voids, but even if there is moisture, the back cover part is made of soft urethane foam, so that water will spread inside the waterproof shoes That is prevented. Further, in the above proof <br/> water shoes, water diffuses into the base fabric胛被portion, when reaching the seam between胛被portion and the middle bottom, midsole and胛被back (or back Bleeding on the surface is also prevented, and the durability and functionality of the waterproof shoe are improved.

[0008]

REFERENCE EXAMPLE In this reference example , vinyl leather or synthetic leather having a waterproof or water-repellent base fabric is used for a shell and sewn with a waterproof or water-repellent sewing thread. the胛被melted bonding tape, sewing with sewing thread was waterproof or water-repellent bottom in which a waterproof or water-repellent, a waterproof shoe have configured wearing the shoe sole.

As a function, in the waterproof shoes using the vinyl leather or the synthetic leather of the reference example for the shell, the vinyl leather layer or the synthetic leather layer which is the surface layer of the shell originally has waterproofness. However, the base cloth adhered to this was further subjected to waterproof or water repellent treatment. However, even if the processed sewing thread is used, moisture will inevitably penetrate into the gap between the seams, but this water cannot be diffused into the base fabric because it is blocked by the processed waterproofing function, Further, since the seam on the back surface of the upper is covered with the waterproof tape and melt-pressed, the back surface of the upper does not get wet and the heat insulation of the shoe does not decrease.

A waterproof shoe according to a reference example will be described below with reference to the drawings. The waterproof shoe 01 of this reference example uses a shell 10 having a specific structure shown in FIG. 1, and as shown in FIG.
The upper 30 is attached to the last 51 of the injection molding machine 50 by sewing the upper 30 with the periphery of the inner bottom 20 superimposed on the lower periphery of the inner bottom 20, and is surrounded by the bottom 52, the bottom mold 53 and the side mold 54. The shoe sole 40 formed by injecting a thermoplastic resin into the injection molding gap 55 is mounted. In order to construct the shell material 30, the insole 20 on which the water-repellent finish is applied to the shell 10 is sewn with the water-repellent thread 16 (see FIG. 3).

By the way, the cover 10 is formed by applying a waterproof or water-repellent base cloth 13 to the vinyl leather layer 12 of the material.
Using a vinyl leather 11 adhered to the above, a toe reinforcement and a sand guard are sewn with a sewing thread 14 similarly processed, and a hot melt tape 17 as a waterproof tape is melt-pressed on a seam 15 on the back side of the vinyl leather 11. (See FIG. 1). The cover 10 may use synthetic leather having the same configuration as described above.

The waterproof or water-repellent treatment of the base cloth 13 can be performed by dipping the raw material in a water-repellent such as a fluorine-based or silicone-based material (dipping the cloth in a liquid of the water-repellent), or by forming a cover. The cover is cut into gravure (using a small machine such as a gluing machine to apply a water-repellent agent only on the back side) to obtain a base cloth of vinyl leather or synthetic leather. In this case, after producing vinyl leather or synthetic leather, the base fabric surface may be subjected to a water-repellent treatment.

The insole 20 is constructed by bonding a front cloth 21 and a back cloth 22 (or one piece), and the front cloth 21 is water-repellent or waterproof. Examples of the water-repellent agent include a fluorine-based water-repellent agent, a silicon-based water-repellent agent, and the like, but a fluorine-based water-repellent agent having good adhesion to the inner bottom backing cloth 22 or the outsole is preferable. Further, the sewing thread 14 and the water-repellent thread 16 may be a general thread that is dipped in a water-repellent agent such as a silicone-based or fluorine-based repellent, or a monofilament thread that is waterproof or water-repellent. Further, the waterproof hot-melt tape 17 has a melting point of 120-200 ° C. on a thermoplastic film or a thick cloth (woven fabric, non-woven fabric, etc.) having a softening point of 180 ° C. or higher.
A thermoplastic adhesive of 160 ° C. is laminated and has a thickness of 0.1 to 0.1 mm.
A 5 mm film is used, which is cut to the required width.

With the above construction, in the waterproof shoe of the present embodiment , the moisture permeated into the shell 10 through the gap between the sewing thread 14 and the seam 15 may enter the base cloth 13, It is not only difficult to spread,
Hot melt tape 1 covering seam 15 on the back of
7, the inside of the waterproof shoe 01 does not get wet and the heat retaining function is maintained. Also, when the water diffused into the base cloth 13 reaches the seam 15 between the shell 10 and the midsole 20, the water is repelled by the midsole 20 and the water-repellent thread 16, and is shut off. Bleeding on the front surface and the back surface of the shell 10 is prevented. As a result, the durability and functionality of the waterproof shoe are improved.

[0015] Example will now be described waterproof shoes real施例of the present invention with reference to the drawings.胛被material 03 to be used for actual施例this, as shown in FIG. 4, and sewn with sewing thread 74 of waterproof or water-repellent and Table胛被portion 70 and the rear胛被portion 80 each independently After that, the peripheral edges of the both cover portions 70 and 80 are overlapped with each other to form the gap portion 9.
It is formed by sewing together with 0 provided. And
The shell material 03 and the water-repellent insole 61 are sewn with a water-repellent thread 76, and the shoe sole 04 is attached, thereby completing the waterproof shoe 02 as shown in FIG.

The upper cover portion 70 is formed by arranging a suede-like synthetic leather 71 on the front surface thereof, a urethane resin layer 78 on the back surface thereof, sewing the same with a water-repellent or waterproof sewing thread 74, and then laminating the seams. A hot-melt tape 77 as a waterproof tape is melt-pressed on the back surface so as to cover 75.

The suede-like synthetic leather 71 is composed of a suede layer 72 and a base cloth (for example, a blended fabric of rayon and polyester) 73 on the surface thereof. Waterproofness is obtained. The suede-like synthetic leather 71 is obtained by, for example, coating a base cloth 73 with a urethane resin solution and wet-solidifying the synthetic leather to form a suede layer 72 by buffing the synthetic leather. The lamination of the suede-like synthetic leather 71 and the urethane resin layer 78 is performed, for example, by coating a release paper (not shown) with a urethane resin solution, semi-drying or drying, and then coating the surface with an adhesive. The layer and the base cloth 73 of the suede-like synthetic leather 71 may be laminated. Further, as the sewing thread 74, a fiber thread subjected to a waterproof or water-repellent treatment, or a waterproof monofilament may be used.

Next, a back cover portion 80 is provided on the front side of the flexible urethane foam 81 as a nylon tricot 82 as a fabric.
And a cotton pile 83 is adhered to the back side as a fabric, and sewn with a water-repellent or waterproof sewing thread. The cloth is made of soft urethane foam 81.
May be attached to either the front side or the back side.

As shown in FIG. 6, the cover material 03 is formed on a cover 60, and a shoe sole 04 for covering a sewn portion with an upper edge is attached to a general waterproof shoe. In the case where the waterproof shoe 02 is used after finishing to 02, an air layer is formed by the gap portion 90 interposed between the top cover portion 70 and the back cover portion 80, so that the thermal insulation of the entire waterproof shoe 02 is further enhanced. Further, the water on the shoe surface is prevented by the urethane resin layer 78 forming the upper shell portion 70, and the water entering along the seam 75 is removed by the urethane resin layer 7.
8 and the hot melt tape 77 prevent water from appearing on the back surface of the top cover 70. However, even if moisture is generated in the gap 90, the inner surface of the shell 60 does not get wet because the back cover part 80 further prevents the penetration of moisture into the interior. In addition, since the hot melt tape 77 is covered and protected by the back cover portion 80, it does not wear or peel off, so that the waterproof function and the durability are not reduced.

The insole 61 is formed by laminating a front cloth 62 and a back cloth 63 (or one piece), and the front cloth 62 is water-repellent or waterproof. Further, a midsole 61 obtained by applying a water-repellent treatment to the shell material 03 and the top cloth 62.
Is sewn with a water-repellent thread 76.

[0021] Since the is equal to or greater than the configuration, in the waterproof shoes 02 of this real施例, water that has entered along the gap between the seam 75 and the sewing thread 74 of胛被60 is diffused into the base fabric 73 When the seam 75 between the shell material 03 and the midsole 61 is reached, the water repellent effect of the midsole outer cloth 62 and the water repellent thread 76 blocks water intrusion, and the front and back of the outer cloth 62 Cap part 7
Bleeding on the surface of 0 is prevented.

The suede-like synthetic leather 71, its base cloth 73, the sewing thread 74, the insole 61, the waterproof / water-repellent treatment of the water-repellent thread 76, and the configuration of the hot melt tape 77 are described in the above reference.
The details are omitted because they are similar to the examples .

Although the embodiments of the present invention have been described above, the specific configuration is not limited to these embodiments, and the present invention is applicable even if there is a design change within the scope of the present invention. include.

[0024]

[Effect of the Invention] In the waterproof shoe of the present invention, the base cloth of the upper is subjected to waterproofing or water-repellent treatment and sewn with the same processed sewing thread, or the upper and lower coverings are connected to each other. Using a shell material with a gap between them to increase the heat retention,
In addition, since the waterproof tape is welded to the back side of the seam or the like to prevent the infiltration into the inside of the shell, the waterproof tape is also protected, so that its waterproof function and durability are maintained. In addition, the water repellent insole is sewn to the insole with water repellent thread, so even if water diffuses into the base fabric, the insole surface or the back of the cover (or back cover) ) Since it is prevented from seeping out to the surface, the durability and functionality of the waterproof shoe are improved, and the shoe is extremely comfortable to wear.

[Brief description of the drawings]

FIG. 1 is an enlarged view showing a cross section of a part of a shell of a waterproof shoe according to a reference example .

FIG. 2 is a longitudinal sectional view showing a state in which the waterproof shoe of the reference example is injection-molded.

FIG. 3 is a longitudinal sectional view showing a main part of the waterproof shoe of the reference example .

[4] The part of the waterproof shoe胛被material engagement Ru real施例the present invention is an enlarged view showing the cross section.

Is a perspective view of a waterproof shoe with胛被by Figure 5 the engagement Ru conceived real施例waterproof shoe胛被material.

6 is a longitudinal sectional view showing an essential part of the waterproof shoes engagement Ru real施例the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 01 Waterproof shoes 02 Waterproof shoes 03 Shell 04 Sole 10 Shell 11 Vinyl leather 13 Base cloth 14 Sewing thread 15 Seam 16 Water repellent thread 17 Hot melt tape 20 Midsole 40 Sole 61 Midsole 70 Top cover 71 Suede-like Synthetic Leather 74 Sewing Thread 75 Seam 76 Water Repellent Thread 77 Hot Melt Tape 78 Urethane Resin Layer 80 Back Cover 81 Soft Urethane Foam 83 Cotton Pile 90 Void

Claims (1)

(57) [Scope of request for utility model registration] 1. An outer cover made of a suede-like synthetic leather and a urethane resin layer laminated on the back surface thereof, and a waterproof tape having a waterproof structure formed by melting and pressing a waterproof tape from the back side of the seam;
After sewn separately with waterproof or water-repellent sewing thread, a back cover portion made of a material in which a fabric is bonded to one or both surfaces of a soft urethane foam, and then the upper cover portion and the back cover portion are sewn. A gap is provided between them, the respective edges are overlapped, and a shell formed by sewing together with the sewing thread, and a waterproof or water repellent midsole are sewn with a waterproof or water repellent sewing thread. A waterproof shoe characterized by comprising a shoe sole.