JPH0630801A - Cloth footgear and manufacture thereof - Google Patents

Abstract

PURPOSE:To provide highly durable cloth footgear which is comfortable to wear, which facilitates a work, which has a firmly bonded toe side where the edge end part of the tread is apt to peel off, and which has an arch-like shank. CONSTITUTION:An instep part 1 made of cloth is led into the lower surface of an insole 2, and a rear sole part 3 having such a shape that the front part of the sole of cloth footgear is cut off, and having a shank which is curved upward and vulcanized and formed into an arch-like shape is stitched to the rear part of the bottom of the instep 1. Meanwhile, a front sole part 4 having such a shape that the rear part of the sole of the cloth footgear is cut off and made of unvulcanized rubber is bonded to the front part of the bottom of the instep 1, and is then vulcanized.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an underground construction which can be used for civil engineering, construction sites, agricultural work and various other purposes, and a method for producing the underground construction.

[0002]

2. Description of the Related Art Conventional socks have been manufactured by attaching an upper obtained by stitching cloth and an underground sole made of rubber or a synthetic resin by sticking or sewing. Sticking by sticking means that the upper is fished into an aluminum foot and the adhesive is applied to the upper edge and the bottom.
On the other hand, this is a manufacturing method in which the adhesive surface of unvulcanized underground rubber is treated with a solvent to form a paste, and both are pasted and then vulcanized and molded. Further, the sewn-type fixation is a manufacturing method in which an upper is mainly fished into an aluminum shoe and then the vulcanized (press) -molded base is attached with an adhesive and a sewing machine is used. Alternatively, it is a manufacturing method in which the bottom rubber of the press-vulcanized underground is attached only by sewing without fishing the sewn upper and without using an adhesive (in recent years, due to lack of manpower and cost, Many manufacturing methods).

[0003]

However, in the pasting type manufacturing method, although it is possible to obtain a firmly fixed state, it is necessary to bond the unvulcanized state. It was not possible to perform a molding process such as a curved molding. In addition, in the manufacturing method by the sewn type, it is possible to vulcanize and form into various shapes freely so that the arch part of the bottom of the arch is curved in an arch shape, but the vulcanized rubber bottom and the upper side are firmly formed. Since it is difficult to adhere, it is reinforced by sewing with sewing machine,
The adhesion at the edges such as the toe side was easy to peel off.

In view of the above problems, the present inventor has noticed that the required shape and adhesive strength are different between the toe side subterranean bottom and the heel side subterranean bottom. The bottom edge of the basement and the toe side where the upper is easily peeled off can be firmly bonded to each other to provide a basement with excellent durability.

[0005]

In order to solve the above-mentioned problems, in the underground of the present invention, the rear bottom portion of the arch of which the shape is curved upward is sewn or adhered to the rear portion of the upper bottom portion to form a separate body. It is characterized in that it has a structure in which the front bottom portion of the is bonded to the front portion of the upper bottom portion.

Further, according to the present invention, the rear bottom part of the front part of the bottom of the underground is excised and vulcanized beforehand into a shape in which the arch part is curved upward, and then sewn or bonded to the upper bottom part, The above-mentioned front part is also characterized by a method of manufacturing each underground by vulcanizing and forming an unvulcanized front bottom part to the upper bottom part.

The connection between the rear bottom portion and the front bottom portion is preferably made by adhesive bonding between the arch portion and the stepping portion near the toes.

[0008]

[Function] The front bottom and the upper are vulcanized and molded by bonding the unvulcanized rubber surface with an adhesive, and the edges are raised slightly to the upper part to increase the adhesive surface and prevent it from peeling off. It can be curved in an arch shape to increase the fit, and it does not feel worn or discomfort regardless of the difference in foot shape.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below with reference to the drawings. In the case of the underground of the present invention, the upper 1 sewn with cloth is hung on the lower surface of the insole 2, and the front part of the underground is laid at the rear of the suspended upper 1 bottom along the line II in FIG. The rear bottom part 3 formed by vulcanizing the arch part in the shape of an arch curved upward is fixed by a sewn type, and is attached to the front part of the bottom of the upper 1 and the front part of the basement. In addition, the rear part is raised so that the peripheral part is slightly raised, and the rear surface is formed to have a shape with a large number of adhesive surfaces.
The front bottom part 4 made of unvulcanized rubber in a shape cut from the line II is adhered by a sticking method and vulcanized to manufacture.

The rear bottom portion 3 can be formed by press-molding while vulcanizing unvulcanized rubber to curve the arch portion upward. The peripheral portion of the rear bottom portion 3 formed by this vulcanization molding is formed on the upper 1 of the upper 1. Sew on the periphery. It is preferable to adhere it with an adhesive agent before this sewing because it will result in a stronger fixed state. Further, it is preferable that the heel peripheral portion is formed so as to be able to rise and the end portion is raised and sewn, because it becomes even stronger.

The front bottom part 4 is treated with a solvent such as gasoline to make its upper surface into a paste, and is adhered to the upper surface via an adhesive applied to the upper 1 bottom and the midsole 2, and is also sutured first. The seam portion with the rear bottom portion 3 which has been formed is adhered, and then vulcanized to obtain a more firmly adhered state. This vulcanization may be performed by heating the entire bottom of the underground or vulcanizing only the front part.

Further, the seam between the rear bottom portion 3 and the front bottom portion 4 is bonded between the arch of the foot and the stepped portion near the toes, and as shown in FIGS. The seam edges can be shaped so that they have a staggered step, and this seam can be bonded with an adhesive. Either of the seam side edges is the insole 2 side, and either is the outside. It is possible to bond them, but it is preferable to bond them so that the seam edge of the front bottom part 4 is on the outside.

The joint I-I is preferably formed in a flat portion in front of the arch as shown in FIG.
It may be formed in the middle of the arch of the arch as shown in FIG. 3, and in this case, as shown in FIG.
It is also possible to form a thick seam portion or to form a thick seam portion of the front bottom portion 4 as shown in FIG.

The anti-slip or reinforcing concave and convex shapes formed on the lower surfaces of the rear bottom portion 3 and the front bottom portion 4 may be arbitrary shapes.

Since the underground construction of the present invention has the above-mentioned construction, the arch portion of the rear bottom portion 3 is curved upward to enhance the fit, and the wearer does not feel friction or discomfort regardless of the difference in foot shape. In particular, the edge portion on the toe side, which is particularly easy to peel off, can be raised upward and maintained in a strong adhesive state.

[0016]

INDUSTRIAL APPLICABILITY As described above, in the case of the underground of the present invention, the toe side bottom rubber edge, which is apt to cause the peeling phenomenon of the edge portion, can be formed upright and firmly adhered to it even for long-term use or intense work. Not only can it be endured, but the arch of the arch is curved to give a good fit and a good wearing feel, and it does not feel worn or uncomfortable regardless of the foot shape.

[Brief description of drawings]

FIG. 1 is a bottom view of each underground according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is a vertical cross-sectional view of an underground structure according to another embodiment of the present invention.

FIG. 4 is a vertical cross-sectional view of an underground structure according to still another embodiment of the present invention.

[Explanation of symbols]

 1 Upper 2 Midsole 3 Rear bottom 4 Front bottom

Claims (2)

[Claims] 1. A subterranean structure having a structure in which a rear bottom part of the arch part curved upward is sewn or bonded to a rear part of the upper bottom part, and a separate front bottom part is adhered to a front part of the upper bottom part. . 2. The rear bottom part of the subterranean excavated front part is pre-vulcanized into a shape in which the arch is curved upward and is then sewn or bonded to the upper bottom part, while the front part is An underground manufacturing method in which an unvulcanized front bottom is adhered to an upper bottom to be vulcanized and molded.