JP3085380U - Core material for shoe heel - Google Patents

Abstract

(57) [Problem] To provide a core material for a shoe heel part which can be used for a long period of time without losing solubility in water, not being deteriorated or damaged by aging due to moisture or the like, and capable of withstanding long-term use. SOLUTION: A core material 1 for a shoe heel portion such as a moon shape interposed between an outer skin 2 and an endothelium 3 in a curved portion of a shoe heel portion becomes a curved inner surface of a tanned core material 4 to form an endothelium. A flexible leather board material 5 having a low specific gravity and being adhered is formed on one surface which comes into contact with 3. Leather board material 5 is composed of leather fiber of tanned chromium and vegetable tannins,
% Of natural latex, 3% of a returning and lubricating material, 4% of a dyed and stabilised recycled leather.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a core material for a shoe heel portion such as a moon shape interposed between an outer skin and an inner skin in a curved portion of a shoe heel portion.

[0002]

[Prior art]

 Conventionally, as a core material for a shoe heel part of this kind, for example, Japanese Patent Publication No. 6-77523, Japanese Patent Publication No. 6-77524, Japanese Patent Publication No. 6-93846, Japanese Patent Laid-Open No. 5-237006, As disclosed in JP-A-6-141907, JP-A-10-80301, JP-A-10-225304, etc., a base paper made of wood pulp is mixed with an SRB-based (styrene-butadiene-rubber) synthetic latex. It consisted of attaching an impregnated paper made of artificial leather paper obtained by impregnating a resin with a resin in a dipping method and drying the material to one side of a tanned raw leather (nume) with an adhesive.

[0003] In addition, as a method for producing tanned rawhide (nume), as disclosed in Japanese Patent No. 1052744: Japanese Patent Publication No. 55-45120, first, the extracted rawhide is washed with water to remove impurities. After being immersed for a certain time in an aqueous solution in which an enzyme agent and a degreaser are dissolved, the rawhide is taken out of the aqueous solution and washed with water to remove the enzyme agent and the degreaser attached to the rawhide. The rawhide is immersed in the aqueous solution in which the preservative is dissolved for a certain period of time, the chrome and tannin are further added to the aqueous solution in which the preservative is dissolved, and the rawhide is immersed in the aqueous solution for a certain period of time. Further, it has been proposed that a tanned rawhide (nume) is produced by immersing the rawhide for a certain period of time after adding a neutralizing agent and drying the rawhide.

[0004]

[Problems to be solved by the invention]

 However, in such a conventionally proposed core material for a shoe heel portion, even if the impregnated paper itself is soluble in water even if it is made of artificial leather paper containing SRB-based (styrene-butadiene-rubber) synthetic latex, it may cause moisture. There has been a problem that the impregnated paper may deteriorate and break due to aging.

Accordingly, the present invention has been made in view of the above-mentioned circumstances that existed in the past. The present invention eliminates the solubility in water, and does not deteriorate due to aging due to moisture or the like, and is used for a long period of time. An object is to provide a core material for a shoe heel that can withstand.

[0006]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, in the present invention, a core material 1 for a shoe heel portion interposed between an outer skin 2 and an inner skin 3 in a curved portion of a shoe heel portion, A tanned core material 4 formed by punching out into a lunar shape, and a low-density, flexible leather bonded to one surface of the tanned core material 4 that is in contact with the inner skin 3 as the curved inner surface. And the board member 5. Leather board material 5 is formed from recycled leather with 81% of the composition in tanned tanned tanned vegetable fibers, 12% in natural latex, 3% in returning and lubricating materials, and 4% in dyes and stabilizers. be able to.

[0007] In the shoe heel part core material 1 according to the present invention configured as described above, the low specific gravity and flexible leather board material 5 adhered to the tannery core material 4 prevents corrosion thereof. The effect prevents time-dependent changes due to moisture and the like, and also makes it possible to form a light and flexible core material 1 for a shoe heel. Leather board material 5 made of recycled leather with 81% chromium and vegetable tannin tanned leather fiber, 12% natural latex, 3% returning and lubricating material, 4% dye and stabilizer, It is possible to manufacture the core material 1 for shoe heels with excellent quality and at a reasonable price. It can be manufactured over a wide range from 6 mm to 5.0 mm.

[0008]

[Embodiment of the invention]

 DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Reference numeral 1 shown in the drawing is a lug-shaped core material for a shoe heel portion along a heel portion of a shoe. As shown in FIG. 1, a core material 1 for a part is made of a tanned leather of a tanned leather produced by a conventional patent method (Patent No. 1052744: a technique according to Japanese Patent Publication No. 55-45120) in a lunar shape. A tanned core 4 is formed by punching, and one side serving as a curved inner surface of the tanned core 4 is a leather board which is smaller than the tanned core 4 and has a low specific gravity of, for example, 60% of skin and a flexible leather board. It is manufactured by laminating a material 5 with an adhesive 6 such as a thermosetting material, pressing and heating with a wooden mold (not shown), and forming the material.

[0009] One side of the tanning core 4 which is in contact with the outer skin 2 of the shoe at the time of instep manufacture is a curved outer surface of one side. ), And one side of the tanned core material 4 that comes into contact with the inner skin 3 of the shoe, which is a curved inner surface, has a low moisture content, for example, a thermosetting adhesive such as a counter cement. The adhesive 8 has been applied and dried.

[0010] The shoe heel core material 1 thus produced is sandwiched between the outer skin 2 and the endothelium 3 at the heel of a shoe (upper) not yet provided with a sole in a shoe manufacturing factory, and the upper is used as a last. The adhesives 7 and 8 are adhered and fixed to the outer skin 2 and the inner skin 3, respectively, by heating and pressurizing (hot melt) at a temperature of about 60 degrees with the cover (see FIG. 3). . Note that a thermosetting adhesive of the same component may be applied to both surfaces of the tanned core material 4 and dried.

As the leather board material 5 to be adhered to the tanned core material 4, a balsole that is particularly suitable for manufacturing an arched part, has a very low specific gravity of about 0.81, and can reduce the weight of shoes. Recycled leather such as NO is used. Its lateral flexibility is the highest, the shoes are soft and finished, while the firmness in the vertical direction makes it easy to mount the sides. It is also widely used in midsole manufacturing, with a thickness of about 1.8-2.2 mm and is the same color as the natural color or dark gray. The production width is about 154 cm and this width cannot be changed, but the length can be changed from about 70 cm to 160 cm. As described above, recycled leather is used for a wide range of purposes besides shoes, because of its excellent quality and reasonable price, and its thickness can be manufactured from about 0.6 mm to 5.0 mm.

On the other hand, as specific components of the leather board material 5, 81% of the composition is chrome and vegetable tannin tanned leather fiber, 12% is natural latex, 3% is a returning material and a lubricating material, and 4% is It is a dye and a stabilizer, so that in addition to low specific gravity and flexibility, the anti-corrosion effect is sufficiently exhibited.

[0013] In order to prevent wrinkles from forming on the inner skin 3 on the arch side of the foot at the time of making the instep, the edges of the core material are inclined rearward on the heel side at both ends of the moon. A substantially inverted triangular edge portion (not shown) may be cut and formed.

Next, an example of a manufacturing method for the embodiment configured as described above will be described. A tanned core material 4 is first formed by punching a tanned beef hide made in a predetermined method into a lunar shape, and a thermosetting adhesive 6 is applied to a portion that comes into contact with the heel portion with a nozzle. The leather board material 5 is placed thereon and pressed by a hot press or the like. When the thermosetting adhesive 6 is heated, the leather board material 5 is applied to the tanned core material 4. Affixed (see FIG. 1). Then, the periphery of the tanned core material 4 and the laser board material 5 is cut and polished with a band knife or an edge to form a thin shape so that the cross section becomes a tapered peripheral portion. The tanned core material 4 thus formed is placed on a wooden mold having a heel shape, heated and pressed to form a curved shape, and thermosetting adhesives 7 and 8 are applied to the front and back surfaces, respectively. The core material 1 for shoe heel as shown in FIG. 2 is completed by drying.

In the present embodiment, the tanning core 4 has been described as being used as the core of the heel of the shoe. In addition, the present invention is not limited to shoes and can be applied to other items.

[0016]

[Effects of the Invention] Since the present invention is configured as described above, it is assumed that it will not be soluble in water, and will be able to withstand long-term use without deterioration or damage due to aging due to moisture or the like. be able to.

That is, the present invention is a shoe heel core material 1 interposed between the outer skin 2 and the endothelium 3 in the curved portion of the shoe heel, and the raw leather is punched into a lunar shape. A tanned core material 4 formed by the above-mentioned method, and a flexible leather board material 5 having a low specific gravity and adhered to one surface of the tanned core material 4 which is a curved inner surface and is in contact with the inner skin 3 are provided. The corrosion preventing action of the leather board member 5 can prevent the secular change due to moisture and the like, and can form the light and flexible core material 1 for the shoe heel.

[0018] The leather board material 5 is a recycled leather in which 81% of the composition is tanned from chromium and vegetable tannins, 12% is a natural latex, 3% is a returning material and a lubricant, and 4% is a dye and a stabilizer. Thus, the core material 1 for shoe heels can be manufactured with excellent quality and at a reasonable price, and can be manufactured in a wide range from about 0.6 mm to 5.0 mm in thickness.

[Brief description of the drawings]

FIG. 1 is a development view of a core material for a heel part of a shoe according to an embodiment of the present invention.

FIG. 2 is a perspective view of a core material for a shoe heel part after the curve molding.

FIG. 3 is a cross-sectional view showing a state in which the heel of the shoe is formed using the core material for the shoe heel.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Shoe heel core material 2 ... Outer skin 3 ... Inner skin 4 ... Tanned core material 5 ... Leather board material 6,7,8 ... Thermosetting adhesive

Claims (3)

[Utility model registration claims] 1. A core material for a shoe heel portion interposed between an outer skin and an endothelium in a curved portion of a shoe heel portion, wherein a tanned core formed by punching a raw hide into a moon shape. Characterized by having a soft leather material having a low specific gravity and being adhered to one surface which is a curved inner surface of a tanned core and abuts against the inner skin as a tanned core material. Core material. 2. The leather board material is composed of leather fiber of tanned tanned with chromium and vegetable tannin of 81% of the composition.
2. A core material for a shoe heel part according to claim 1, wherein 2% is formed of a natural latex, 3% is formed of a returning material and a lubricant, and 4% is formed of a recycled leather which is a dye and a stabilizer. 3. A core material for a shoe heel portion interposed between an outer skin and an endothelium in a curved portion of a shoe heel portion, wherein a tanned core formed by punching a raw hide into a lunar shape. And a low-density, flexible leatherboard material adhered to one side of the tanned core material that is in contact with the inner skin as a curved inner surface. The leatherboard material has a composition of 81%. Leather fiber in tanned tanned and vegetable tannins, 12%
Is natural latex, 3% is a returning and lubricating material,
A core material for shoe heels, wherein 4% is formed by a dye and recycled leather which is a stabilizer.