JPH08294403A - Shoes and manufacture thereof - Google Patents

Abstract

PURPOSE: To reduce stuffiness in a shoe, even in the case of a shoe manufactured by vulcanization, by allowing humidity and heat to be dissipated through pores and holes formed in the outsole. CONSTITUTION: A shoe 1 has an outsole 2, ventilating member 3, insole 4, upper 5, etc. The outsole 2 is constituted of rubber, and has through holes 2a penetrating in its thickness direction and arrayed from vamp to shank. The ventilating member 3 that is water-impermeable is so shaped as to cover all the through holes 2a formed in the outsole 2, and is constituted of an elastic plastic sheet sandwiched between two water-impermeable/gas-permeable membranes. The elastic plastic sheet is provided with an appropriate number of pores perforated through its thickness, and so is ventilating. The insole 4 is made of a ventilating material with a specified number of ventilating pores 4a perforated through its thickness. The heat and sweat vaporized in the shoe 1 is dissipated through the ventilating pores 4a, water-impermeable/gas-permeable member 3, and through holes 2a.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shoe to which a vulcanized type is applied and a method for manufacturing the shoe.

[0002]

2. Description of the Related Art In general, a vulcanized manufacturing method is, as shown in FIG. 4, an unvulcanized rubber in which an insole is temporarily fixed to a last 6 and then an upper is suspended to form an outsole on a bottom mold 7. This is a method of arranging a material, applying predetermined heat and pressure to both side molds 8 and 9 and the bottom mold 7, and vulcanizing for a predetermined time, so as to bottom the upper.

[0003]

According to this vulcanized manufacturing method, since the outsole can be bonded in the upper and the fibers of the insole, shoes manufactured by this method can be manufactured at low cost. At the same time, it has the advantages that it is excellent in waterproofness due to the firm adhesion between the outsole and the upper, there is no fear of so-called peeling off of the bottom, and the bottom has a long life.

However, among these, the feature of being excellent in waterproofness, on the other hand, is also connected to the drawback of making the inside of the shoe easily stuffy.

According to the present invention, the vulcanized manufacturing method can reduce the degree of stuffiness in the shoe as compared with the conventional one without impairing the above-mentioned various advantages of the vulcanized manufacturing method, including the excellent waterproof property. An object of the present invention is to provide a shoe manufactured by and a manufacturing method thereof.

[0006]

In order to achieve the above object, a shoe manufactured by the vulcanized manufacturing method of the present invention is a shoe manufactured by the vulcanized manufacturing method, which has a front sole having a through hole penetrating in the thickness direction. , And a water-impermeable and air-permeable member disposed between the outer bottom and the inner bottom.

In the method of manufacturing a vulcanized shoe of the present invention, the first step is to temporarily fix the insole to the last and suspend the upper.
Vulcanized shoes having a step, a second step of arranging an unvulcanized rubber material on the bottom mold, and a third step of heating and pressing the side mold and the bottom mold to vulcanize and press the front sole. In the manufacturing method of 1., a bottom mold having a plurality of pins protruding from the unvulcanized rubber material placement surface side is used, and after the unvulcanized rubber material is placed on the bottom mold during the second step. A non-water-permeable breathable member is arranged on the upper surface of the unvulcanized rubber material.

[0008]

According to the shoe of the present invention, moisture and heat in the shoe are released to the outside through the through holes formed in the outsole. According to the manufacturing method of the present invention, in the vulcanized manufacturing method, it is possible to easily and reliably form the through holes on the front bottom.

[0009]

Embodiments of the present invention will now be described in detail with reference to the drawings. In the figure, reference numeral 1 denotes the shoe of this embodiment, which has an outsole 2,
It is configured to have a non-permeable breathable member 3, an insole 4, an upper 5, and the like.

The front sole 2 is made of rubber, and has a plurality of through holes 2a penetrating in the thickness direction from the toe portion to the vicinity of the step portion. The size (hole diameter) and number of the through holes 2a can be appropriately changed according to the application of shoes such as for business use and sports use. For example, in the case of sports use, the hole diameter can be relatively large, Breathability can be enhanced by providing a larger number.

The water-impermeable air-permeable member 3 has a shape capable of covering the entire through holes 2a provided in the front bottom 2, and as shown in FIG. And the water-impermeable gas permeable membranes 32 and 33 laminated on each other. As will be described later, since the elastic resin 31 has a pin 71 on the bottom mold 7 at the time of manufacturing, even if the tip of the pin 71 is pierced, the ventilation film 32 laminated on the upper surface of the elastic resin 31 is used. Are provided to prevent breakthrough and to enhance cushioning. Further, the elastic resin 31 needs to have air permeability, and an appropriate number of through holes 31a are preliminarily formed in the thickness direction. Although natural rubber, synthetic rubber, urethane or the like can be used as the elastic resin 31,
It is preferred to use those foams to improve cushioning properties.

The water-impermeable gas permeable membranes 32 and 33 may be of any type as long as they allow only water vapor and air to pass but not water. For example, Nitto Denko
The product name "Microtex" can be used, but not only this, but one side of which has a coarse mesh (for example, Asahi Kasei Apico, trade name "Tricot") and the other side of which has a fine polyester weave. It is preferable to use a cloth or non-woven fabric adhered from the viewpoint of durability. In this embodiment, the water impermeable gas permeable membranes 32 and 33 are laminated on both surfaces of the elastic resin 31. This is because even if the shoe of this embodiment is worn, even if foreign matter enters through the through holes 2a formed in the outsole 2 and there is a hole in the ventilation film 33 attached to the grounding surface side, This is to prevent intrusion. In order to enhance waterproofness, it is most preferable to adopt the constitution as in this embodiment, but as a minimum element, the breathable membrane is made of elastic resin 31.
It is sufficient that it is attached to at least one surface, preferably the upper surface.

As the insole 4, a material having air permeability is used. In this embodiment, as shown in FIG. 1, the insole 4 is provided with a predetermined number of ventilation holes 4a in the thickness direction.
However, the material for forming the insole 4 itself is not limited to this, and a material having air permeability may be used.

According to the shoe 1 of the present embodiment, when walking or landing or leaving the ground, the ventilation holes 4a provided in the insole 4, the water-impermeable breathable member 3, and the outsole. Sweat converted into water vapor is released in the shoe 1 through the through holes 2a. Moreover, the heat in the shoe 1 is also released. On the other hand, since the water-impermeable breathable member 3 has the water-impermeable breathable membranes 32 and 33 as constituent elements, water and dust from the through holes 2a provided in the outsole 2 enter the shoe 1. Is prevented.

Next, the manufacturing method of this embodiment will be described. First, in the first step, the insole 4 having the vent hole 4a is temporarily fixed to the last 6 and the upper 5 is suspended. Until this suspending work, the vent 4a is used as the insole 4.
The method is exactly the same as the conventional vulcanized manufacturing method, except that one having

Next, in the second step, as shown in FIG. 3 (a), the unvulcanized rubber material 20 is placed on the bottom mold 7, but in this embodiment, the bottom mold 7 is The one having the pin 71 is used. This pin 71
Are projected on the unvulcanized rubber material placement surface 72 of the bottom mold 7. Specifically, since the pin 71 is provided to form the through hole 2a formed on the front bottom 2 described above, it is provided between the toe portion and the vicinity of the step portion. Further, the pin 71 is formed to be slightly longer than the thickness of the unvulcanized rubber material 20. This is for surely forming the through hole in the unvulcanized rubber material 20, but if it is too long, it also penetrates the water-impermeable air-permeable member 3 arranged on the upper surface of the unvulcanized rubber material 20. There is a risk of doing it. Therefore, the thickness is preferably slightly longer than the thickness of the unvulcanized rubber material 20.

However, even if such a pin 71 is provided, the rubber material remains attached to the tip portion of the pin 71 by heating the unvulcanized rubber material 20,
The through hole may not be penetrated. Therefore, in order to more reliably form the through hole, a hole portion 20a having a diameter larger than the diameter of the pin 71 is previously formed in the unvulcanized rubber material 20 at a position corresponding to the pin 71. Is more preferable. As a result, after molding, the through hole 2 is formed in the front bottom 2.
It can prevent that a does not penetrate. Further, since the hole 20a to be opened in advance is a large hole, it is easy to align the pin 71 with the hole 20a. Moreover, by heating and pressurizing in the third step described later, the gap between the hole portion 20a and the pin 71 provided in advance is also closed.

After arranging the unvulcanized rubber material 20 on the bottom mold 7, the above-mentioned water-impermeable permeable member 3 is further arranged on the upper surface thereof. In addition, as shown in FIG. 3A, the shank 10 and the heel block 11 may be used as necessary.
Are placed in place.

Next, in the third step, heat and pressure of a predetermined temperature are applied to the bottom mold 7 and the two side molds 8 and 9 so that the unvulcanized rubber material 2 placed on the bottom mold 7 is heated.
0 is vulcanized (see FIGS. 3 (b) and 4). Molding conditions such as heating conditions and pressure conditions can be appropriately selected within the conventional range.

In the above description, the through hole 2a of the outsole 2 is formed between the toe portion and the tread portion, but if the shoe does not require the shank 10 or the like to be worn, the tread is not treaded. It is needless to say that the pin 71 provided on the bottom mold 7 may be different in position, as a matter of course, it may be formed to include the portion, the heel portion, or the like, or only the tread portion or the heel portion.

[0021]

According to the shoe and the manufacturing method thereof of the present invention,
Through holes for ventilation can be easily formed in the outsole of the shoe manufactured by the vulcanized manufacturing method. On the other hand, since the water-impermeable and air-permeable member is provided, water and dust can be prevented from entering from the ground contact surface side of the front bottom. Therefore, it is possible to effectively release moisture and heat inside the shoe while maintaining the characteristic of the shoe manufactured by the vulcanized manufacturing method that is excellent in waterproofing and easy to manufacture, and the shoe can be compared to the conventional one. It is possible to reduce the degree of stuffiness inside.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of a shoe of the present invention.

FIG. 2 is an exploded perspective view showing a water-impermeable breathable member used in the same example.

FIG. 3 is a diagram illustrating an embodiment of the shoe manufacturing method of the present invention.

FIG. 4 is a diagram showing an arrangement relationship of a bottom mold and a side mold generally used in a vulcanized manufacturing method.

[Explanation of symbols]

 1 Shoes 2 Outsole 2a Through Hole 3 Water-Impermeable Breathable Member 31 Elastic Resin 32 Water-Impermeable Breathable Membrane 33 Water-Impermeable Breathable Membrane 4 Insole 5 Upper 6 Last 7 Bottom Mold 8 Side Mold 8 Side Mold 9 Side Mold

Claims (7)

[Claims] 1. In a shoe manufactured by the vulcanized manufacturing method, a front sole having a through hole penetrating in a thickness direction,
A shoe manufactured by the vulcanized manufacturing method, characterized in that it has a non-water-permeable breathable member disposed between the outer sole and the inner sole. 2. The water-impermeable air-permeable member comprises an elastic resin having air-holes penetrating in the thickness direction, and a water-impermeable air-permeable membrane laminated on at least one surface of the elastic resin. Shoes manufactured by the described vulcanized manufacturing method. 3. The shoe manufactured by the vulcanized manufacturing method according to claim 1, wherein the insole is breathable. 4. A first step of temporarily fixing the insole to the last and suspending the upper, a second step of disposing an unvulcanized rubber material on the bottom mold, and heating and applying the side mold and the bottom mold. In the method for manufacturing a vulcanized shoe having a third step of vulcanizing and press-bonding the outsole by pressing, a bottom mold having a plurality of pins protruding from the vulcanized rubber material placement surface side In the second step, the unvulcanized rubber material is placed on the bottom mold, and then the water-impermeable breathable member is placed on the upper surface of the unvulcanized rubber material. Production method. 5. The water-impermeable air-permeable member is composed of an elastic resin having air-holes penetrating in the thickness direction and a water-impermeable air-permeable membrane laminated on at least one surface of the elastic resin. The method for manufacturing a vulcanized shoe according to claim 4. 6. The method of manufacturing a vulcanized shoe according to claim 4, wherein the length of the pin provided on the bottom mold is longer than the thickness of the unvulcanized rubber material. 7. An unvulcanized rubber material, wherein holes having a diameter larger than the diameter of the pin are pre-drilled at positions corresponding to the pins provided on the bottom mold. 1. The method for manufacturing a vulcanized shoe according to any one of 1.