JPH0584161B2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention mainly relates to a method for manufacturing athletic shoes suitable for running, and in particular improves the productivity of athletic shoes for running, which most require lightness. It aims to improve the

<Prior art> According to the conventional manufacturing method of athletic shoes, the insole touches the bottom side of the shoe last and then hangs the lower edge of the shoelace. A relatively hard or thick layer was used to prevent the material from moving or deforming and hindering hanging.

In addition, instead of the insole according to the above method for manufacturing athletic shoes, an insole made of a material that is relatively hard or has a thick layer but can be peeled off leaving a thin wall thickness is used,
After the insole is brought into contact with the bottom side of the shoe last, the shoe cover is suspended, and the hanging part of the lower edge of the shoe cover and a part of the bottom side of the insole are adhesively bonded to the shoe sole using adhesive. Then, the sole is firmly connected to the hanging part of the lower edge of the shoelace, and then the last is removed from inside the shoelace, and the insole is carefully removed, leaving only the part corresponding to the thin inner sole body. I found a way to remove the other parts.

<Problems to be Solved by the Invention> According to the above-mentioned former method of manufacturing athletic shoes, since the insole used is relatively hard or has a thick layer, the lower edge of the shoe cover is attached to the insole. When hanging around the bottom of the shoe, it is difficult to deform or move, so there is no risk of hindering the hanging.On the other hand, when wearing the molded athletic shoe, the contact feeling with the sole of the foot is not only unpleasant. Because they have poor cushioning properties and an increased sense of weight, they are not preferred as athletic shoes for running, especially marathons.

Similarly, according to the latter method of manufacturing athletic shoes, when the insole used is suspended and abutted on the bottom side of the insole, as in the case of the former method of manufacturing athletic shoes. Not only is there no risk of interfering with the hanging fit, but the athletic shoes are molded so that only a thin layer remains and the other parts are peeled off. Although it feels good in contact with the soles of the feet, it must be carefully peeled off to leave only a thin layer and peel off the other layers, which requires relatively advanced technology and time, and production is slow. There were defects such as deterioration.

<Means for Solving the Problems> The method for manufacturing athletic shoes of the present invention provides an extremely flexible insole b that abuts against the bottom side of the shoe last e and suspends the lower edge 4 of the shoelace a. The thin inner sole body 1 and the inner sole body backing plate 2, which is thicker and more rigid than the inner sole body 1 and is relatively difficult to stretch, but does not lose flexibility, have a peel strength (1 kg). /25mm width)
Using adhesive material 3 of about 100 mL to form a removable bond, the side of the hanging part of the lower edge 4 of the cover a and the middle bottom b
The sole is crimped to a part of the bottom side of the midsole main body 1 using a desired adhesive, and then the last e is removed from inside the shoe cover a, and then the midsole is attached from above the midsole main body 1. This is a novel method in which the main body contact plate 2 is removed and an insole c is brought into contact with the midsole main body 1 or not in place of the midsole main body contact plate 2.

<Operations and Effects> According to the method for manufacturing athletic shoes of the present invention, the insole b used therein is extremely flexible and thin, and the insole body 1 is thicker and more rigid than the insole body 1, and is relatively difficult to stretch. Since the insole main body contact plate 2 is made so as not to lose its flexibility, the insole b is brought into contact with the bottom side of the shoe last e, and the lower edge 4 of the shoe cover a is pulled. When suspended around the bottom side of the midsole main body 1 of the midsole b, the midsole main body 1 of the midsole b will not move or deform due to the tensile force that attempts to restore it to its original position. The inner sole body contact plate 2 is connected like this
This can be prevented by Next, insole body 1 of insole b
The lower edges 4 of the peripheral laces a on the bottom side of the laces are suspended and abutted, and then the hanging portion sides of the lower edges 4 of these laces a and a part of the bottom side of the inner sole main body 1 of the inner sole b Then, the upper side of the sole a is adhered with a desired adhesive and pressure-molded, and then the last e is extracted from inside the shoe cover a, and the inner sole body contact plate 2 is inserted from above the inner sole body 1 of the inner sole b'. can be peeled off very easily. In this case, the insole main body contact plate 2 is simply bonded to the insole main body 1 with an adhesive material 3 having a peel strength of about 1 kg/25 mm width or less, so that the latter of the prior art A process that does not require skill and takes a long time, such as when removing a relatively thin layer corresponding to the insole body and peeling off the other layers, such as the insole in the manufacturing method of athletic shoes. Not only can productivity be improved, but also high-quality athletic shoes can be provided without impairing the appearance. Furthermore, the insole body contact plate 2 can be used continuously as long as it does not lose its material properties, so it is economical.

<Example> The method for manufacturing athletic shoes of the present invention will be described below with reference to the drawings.

As shown in FIGS. 1 to 4, the manufacturing method of the present invention involves sewing or welding a lace cover a into a desired bottom shape by a conventional method in advance, and forming the inner sole into a desired bottom shape. The insole body 1 and the insole body contact plate 2 of b are cut, the insole c is similarly cut or formed into a desired sole shape, and the sole d is similarly formed or cut into a desired sole shape. First, as shown in FIG. It is releasably bonded to the inner sole main body plate 2 with an adhesive substance 3 having a peel strength of about 1 kg/25 mm width or less. The insole main body 1 may be made of any known insole material as long as it can be formed to a thickness of about 0.3 to 0.5 mm and is flexible, but it may be made of any known insole material, such as natural leather, which is resistant to deterioration due to permeation of sweat. Do not use a material that is easy to tear or a material that is weak against tearing force such as a bubble board.
For example, a nonwoven fabric made of compressed synthetic fibers or pulp board is preferable.

In addition, the insole main body plate 2 may be a rigid material cut to a thickness of about 1.0 to 2.0 mm, with relatively poor extensibility, and without losing flexibility, as is known in the art. Any material may be used, but preferred are, for example, compressed natural or synthetic fibers, felt or the like impregnated with latex liquid or thermoplastic resin liquid, or press board. Furthermore, the adhesive substance 3
The adhesive may be any adhesive as long as it has a peel strength of about 1 kg/25 mm width or less, but urethane-based, acrylic-based, or rubber-based adhesives are preferred, for example.

Next, as shown in Fig. 2, the embroidery cover a is made of a type of ordinary embroidery material such as natural or synthetic leather, woven fabric or knitted fabric of natural or synthetic fibers, etc., and each component is sewn or welded together. Alternatively, each component may be made of two or more kinds of materials and sewn together.
Furthermore, the insole c may be any known insole material as long as it is lightweight and provides good contact with the sole of the shoe wearer's foot. Furthermore, the sole c may be made of a single material, or may be a combination of a midsole 6 and an outer sole 7, such as a polyurethane rubber foam that is lightweight and has good abrasion resistance and impact resistance. Good.

Next, as shown in FIG. 4 to FIG. 4, the method for manufacturing athletic shoes of the present invention is as follows: First, the bottom surface of the shoe last e is brought into contact with the upper surface of the midsole main body contact plate 2 of the midsole b. Place the insole b on the side. Next, the shoe last e is covered and fitted with the shoelace a, and the lower edge 4 of the shoelace a is hung around the bottom side of the inner sole body 1 of the inner sole b. At this time, these bonding surfaces may be bonded by known means such as adhesive. Further, a desired adhesive is applied to the bottom side of the hanging portion side of the lower edge 4 of the shoe cover a, a part of the bottom side of the midsole body 1 of the midsole b, and the top surface of the sole d. These are pressurized and bonded using a known pressurizing means. After the lace-up part a and the sole a part are integrally connected in this way, the lace-up part a of the lace-up part a is
Remove the shoe last e from inside, and then remove the shoe last a from the inside.
Peel the inner insole main body contact plate 2 on the upper surface side of the inner insole b from above the insole main body 1, and place the insole c on the insole main body 1 of the above-mentioned cover a, or press the inner insole main body 1. It is not necessary to place the insole c on top of the insole c. In this way, a desired athletic shoe suitable primarily for running can be manufactured.

Further, after contacting the bottom side of the last e through the insole main body contacting plate 2 which has been peeled off from above the insole main body 1 in the above-mentioned shoe cover a, another insole main body 1 is attached via the adhesive substance 3. can be combined, so the inner sole body abutting plate 2
It is economical because it can be used continuously as long as its original characteristics of high rigidity and poor extensibility but without losing flexibility remain.

[Brief explanation of the drawing]

Figures 1 to 1 are schematic diagrams showing the midsole, which is the main part of the manufacturing method of the present invention, where is a cross-sectional view of the midsole, and shows the state in which the midsole main body and the midsole main body contact plate have been peeled off. FIG. FIG. 2 is a schematic cross-sectional view of the cover used in the manufacturing method of the present invention. Third
1 and 2 are schematic cross-sectional views of an insole and a sole according to the manufacturing method of the present invention, respectively. FIGS. 4 to 4 are illustrations of schematic diagrams related to the manufacturing method of the present invention, and are cross-sectional views of only the shank part,
FIG. 2 is a cross-sectional view showing the connection of the shoe sole and the shoe sole.
FIG. 5 and FIG. 5 are cross-sectional views of athletic shoes manufactured by the manufacturing method of the present invention, in which "1" shows a shoe with an insole and "A" shows a shoe without an insole. <Drawing code>, a...Fashion cover, b...Insole, c
...Insole, d...Sole, e...Shoe last, 1...Insole main body, 2...Insole main body contact plate, 3...Adhesive substance, 4
...lower edge...

Claims (1)

[Claims] 1 Consisting of a lace cover a sewn or welded into a desired shape in advance, an insole b and an insole c also cut or molded into a desired sole shape, a sole d, and a last e; b is a relatively thin and flexible midsole main body 1 and a midsole main body contact plate 2 that is thicker than the midsole main body 1, is rigid, and has relatively poor extensibility, but does not lose flexibility. and peel strength 1
Kg/25mm width or less, and is releasably bonded with an adhesive substance 3 having a peel strength of less than that, and the insole main body contact plate 2 of the insole b is brought into contact with the bottom surface 5 of the shoe last e, and then Then, hang the lower edge 4 of the lace cover a to the bottom peripheral edge of the inner sole body 1 of the inner sole b, and apply a desired adhesive to the lower edge 4 of the lace cover a and a part of the inner sole body 1 of the inner sole b. and adhere to the upper surface of the sole d, and apply pressure at a desired pressure for a desired time to cover the shoe sole a.
and the sole d, remove the shoe last e from inside the shoe cover a, and remove the inner sole body contact plate 2 of the insole b within the shoe cover a, and replace the inner sole body contact plate 2 with an insole. A method for manufacturing athletic shoes, characterized in that c is brought into contact with or not brought into contact with the midsole main body 1.