JPH0622802A - Production of shoes - Google Patents

Abstract

PURPOSE:To easily produce the shoes having rigid heel parts by easily and integrally adhering inexpensive waste leather to be used as a base sheet and EVA and other hot melt resins to be used as interlining sheets and also as adhesives as counter members to front leather forming the heel parts of the shoes by pressurizing and heating means. CONSTITUTION:This process for production of the shoes consists in superposing the scrap leather which is thin and flexible as the base sheet and the EVA and other hot melt resin sheet on each other to form the counter member A, pressing the counter member A, with the base sheet 1 faced on the outer side, to the inside surface of the front leather forming the heel parts of the shoes and integrally adhering the counter member A to the inside surface of the front leather with the adhesive effect of the hot melt resin by means of pressurizing, heating and molding machines, then gradually cooling and curing the resin, thereby shaping and stabilizing the base sheet 1 and the front leather to the rigid shape of the heel parts while interposing the interlining sheet between the base sheet 1 and the front leather.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a method for manufacturing shoes.

[0002]

2. Description of the Related Art Shoes are roughly classified into cloth shoes represented by zuk shoes, leather shoes using animal leather such as cow, horse, sheep and chemical shoes, and the most frequently used leather shoes are the surface leather of the heel. Between the inner leather and the inner leather, high-quality thin leather close to the outer leather and core paper are made of resin, and a mold counter molded in the shape of the heel is sandwiched and integrally bonded, and the entire upper edge of the wearer's mouth is covered. Was attached by sewing with a sewing machine, and it was configured as a leather shoe having a robust heel portion that does not lose its shape.

[0003]

The problem to be solved by the present invention is that, in the manufacture of various kinds of leather shoes, not only the surface leather but also the relatively high quality and expensive but thin but strong leather is used for the mold counter. Since it is molded and attached between the outer and inner leather of the heel by adhering it, a mold counter that is molded beforehand so as not to damage the thin and high-quality leather material during shoe manufacturing is used in the heel. Due to its material, it requires a long time of about half a day for natural drying to avoid mechanical drying, and after drying and molding the shoe, the mold counter is tough and hard, and the inner surface of the shoe heel is He could not be said that he had a good fit with the heel of the human body, where there were few muscles between the skin and bones, and he often had slippage on the soft skin. In addition, if you accidentally step on the heel and deform it, or lose its shape, it will not return to its original shape due to its hardness.Also, for the molding of the mold counter, the natural drying, and the finishing work of the upper part of the shoe boot for sewing. It requires a lot of manufacturing effort.

[0004]

SUMMARY OF THE INVENTION According to the present invention, a counter member attached to the inner surface of the heel of a shoe is used as a substrate made of floor leather (soft and flexible scrap leather) and EVA (ethylene-vinegar). (Bi-copolymer) resin or other hot-melt resin sheet having the same effect as that of the counter member, which is formed by thinly cutting the peripheral portion of the sheet and adhering or laminating an interlining that also serves as an adhesive that gives flexibility to the peripheral portion. With the scrap leather on the outside and the interlining that doubles as the adhesive of the hot melt resin sheet along the inside of the heel of the surface leather, the surface leather and the counter member are integrated with the hot melt resin softened by heating and pressing. The shape of the counter is added to the outer leather heel part by a molding machine and cooled while shaping, and the heel part is formed without sewing due to the solidification stability of the hot melt resin, and the entire shoe is molded. It is characterized by that.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a partially cutaway rear perspective view showing an embodiment of a counter member, which is the most essential feature of the shoe manufacturing method of the present invention.
The counter member A is composed of a substrate 1 made of scrap leather and an interlining 2 which also functions as an adhesive of EVA resin or other hot-melt resin sheet having the same effect, and the scrap leather 1 is made of cow, horse, sheep or the like. The dermis, which is close to the flesh apart from the epidermis of the animal hide, is thinly peeled off to form a sheet, which is usually called scrap leather.
Unlike the sturdy outer leather used for bags, it has softness and flexibility, and this scrap leather is used as the substrate, and EVA is obtained by thinly cutting the peripheral portion 2a on one surface thereof as shown in FIGS. A sheet-like counter member is constructed by stacking resin sheets as the interlining material 2 also serving as an adhesive, preliminarily heating, pressurizing and softening the hot melt resin to adhere it to the substrate 1, and integrating them.

In order to manufacture a shoe by attaching the sheet-shaped counter member A to the heel portion of the shoe, usually, the rear ends of the front leather are sewn together (not shown), as shown in FIGS. A heel part B having a curved structure surrounding the human heel part is formed on the inside of the body part, and the inside of the heel part B is applied with the substrate 1 of the sheet-shaped counter member A on the outside and EVA or other hot-melt resin on the inside. When the counter member A is pressed and heated from the inside, the substrate 1 freely expands and contracts in any of vertical, horizontal, and diagonal directions due to its material, and the heel B
The hot-melt resin sheet for adhering the substrate 1 to the inner surface of the surface leather along the curvature of the outer peripheral portion 2a is thinly shaved, so that the substrate 1 is gently smoothed by heating and softening without a step in thickness. Of the substrate 1 and the outer leather 3 as an interlining between the substrate 1 and the outer leather 3, and the outer leather 3 and the substrate 1 are integrally adhered to each other. 1 is closely adhered to the inner surface of the heel portion, is thinly bonded to the upper end portion of the outer leather 3 as EVA and other resin has a small thickness as an interlining material, and is attached to the upper end portion of the leather 3 by a molding machine (not shown). Then, the mold of the counter is shaped and gradually cooled, and the counter member A is integrated with the heel portion B to stabilize the molding.

After the counter is integrally bonded and formed on the inner surface of the shoe, the shoe surface leather 3 is formed into a predetermined shoe shape, and the insole 4, the outer sole 5, the heel core 6, and the heel sole 6a are conventionally known means. The shoe 8 is completed by attaching the insole 7. In the figure, 3a is a folded edge of the front leather 3. The shoe 8 shown in FIG. 4 is one example for women, but the counter member A of the present invention can be widely used regardless of the type of shoe and whether it is for men, women, adults or children. is there. The counter is made by melting EVA resin without bonding it like a conventional counter, folding back the upper leather and the upper end of the substrate, and hooking the upper shoe socks with the sewing machine to integrally attach it to the upper leather. It exists as an adhesive and interlining between the leather and the substrate that cannot stably fold back the upper end, and can firmly and integrally adhere to the inner surface of the heel.

[0008]

The shoe manufacturing method of the present invention uses (1) a counter for forming a shoe heel by thinly peeling the dermis (floor leather), which is close to meat, of animal leather that is not normally used as scrap leather. Since the floor leather is flexible and stretches well, it follows the curved surface of the heel well, so it is not necessary to hang it on a sewing machine, and the EVA resin on the back side is heated as hot melt.
It is easy to apply pressure to reinforce the substrate and firmly adheres to the leather integrally, and at the same time forms a counter to form the heel of the shoe, so there is no need to sew with a sewing machine as in the conventional technology. It is easy to process and has no perforation, so it has a good appearance. (2) EVA resin is melted and bonded by pressure and heating to integrally bond the resin within the substrate structure and form an interlining. Since it is solidified in the shape of a counter, it is hard to lose its shape, and since the EVA resin itself has good resilience, it can easily return to its original state and maintain its shape even if deformation stress acts, (3) The board is much softer to hit the foot than a counter using a conventional leather, and (4) the price is much lower than that of a leather, and it is a waste product, which requires no complicated process or means. Work is easy and quick, and production efficiency is improved. And, selling price reduces the manufacturing cost also becomes cheap.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view of a counter member that is bonded and shaped on the inner surface of a shoe heel portion.

FIG. 2 is a XX view of FIG.

FIG. 3 is a vertical sectional side view of a main part of a shoe in which a counter member is orthopedically bonded to the inner surface of the shoe heel.

FIG. 4 is a perspective view of the completed shoe.

[Explanation of symbols]

 A counter member B heel part 1 substrate 2 EVA resin 2a peripheral part 3 surface leather 4 shoe insole 5 outer sole

Claims (1)

[Claims] 1. A dermis, which is attached to the inner circumference of the shoe heel part, has a soft and flexible dermis close to the meat apart from the epidermis of cattle and various beasts, which is usually referred to as scrap leather, as a substrate. On the surface, EVA (ethylene-vinyl acetate copolymer) or other hot-melt resin sheet having the same effect as the peripheral part is thinly cut is adhered as an interlining that doubles as an adhesive, and the interlining of the counter member is integrally formed. , Soften by heating and pressing the counter member along the inner circumference of the heel so that the thin upper end surface of the counter member is flush with the upper end surface of the skin heel of the shoe. Is integrally bonded to the inside of the surface leather with the hot melt resin, and while the heat is being retained, the counter member is shaped into the shape of the heel portion by a molding machine and gradually cooled to solidify the hot melt resin. Sew leather and counter members Preparation of shoes, characterized in that to stabilize molded without heel shape.