JPS58112503A - Production of composite footwear sole - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] This invention relates to a method for manufacturing a composite footwear sole by combining materials with different physical properties and colors, and the purpose is to manufacture a composite footwear sole by a simple and practical method. do.

It is known to manufacture composite footwear by combining materials with different physical properties and colors and molding them into composites. but,
Known methods require the use of complex and precise molding techniques, such as the use of multiple molding machines.

In other words, in the conventional method of manufacturing composite footwear soles, in order to prevent the image materials from smearing in the boundary area of the bottom pressure surface of the image materials to be composited, complicated and elaborate expensive molding is used, and molding is He also takes great care in his work.

Furthermore, if the shape or arrangement of the materials to be combined changes, or even if the materials change, a separate forming device is required each time.

In such a situation, in order to meet the demands of a market where small quantities and a wide variety of products are being produced, it is necessary to prepare an extremely wide variety of complex and precise moldings, which is not economical.

The present invention solves these problems and provides a method for manufacturing composite footwear soles using simple molding 111, economically, and for general use.

That is, the present invention provides a method for manufacturing a composite footwear sole by putting two or more materials into a mold and integrally molding each material, in which a recess of a desired shape is formed at a desired position on the surface of the bottom design molded lid. Alternatively, a through hole is provided, and the material is inserted into this recess or through hole, and in good condition, the molding space IIK is filled with another material to perform integral composite molding of the image material. After demolding, the manufactured integral composite molded bottom is The bottom line is that the sole is manufactured by cutting out the nine parts that protrude from the surface.

Also in this product W14, it is inserted into the depression or through hole on the surface of the bottom design molding, and the molding cavity l
It is unavoidable that the Tomobetsu material C (hereinafter referred to as material B) filled with lK will be slightly mismatched in the surface area formed by the bottom design molding during integral composite molding, but in the present invention, the part where such blending occurs will be When the protruding part is cut out, the cut surface becomes the bottom surface, and no trace of material A or material BO1 is observed on the bottom surface. (In the conventional method, the 9th molded surface in contact with the bottom design molded leg becomes the 11th bottom designed surface, so the bottom design molded surface area is the material A.
If the materials B are even slightly mixed together, the appearance of the material B will be observed as it is, which will significantly reduce the product value, so in order to prevent the material B from mating, complex and precise molding is used as described above. I have no choice but to do so. ) This phenomenon becomes a particular problem when a material with a different color is used for material B.
This makes it possible to create a unique footwear sole pattern.

When such a design effect is not intended, for example, when properties such as elasticity and oil resistance are required locally, the material is placed in the local area and the material BK is integrally formed into a composite mold. It is possible to manufacture footwear soles that meet demands.

Although there is no particular restriction on Fi as the material in the present invention, molded bodies of synthetic resin, rubber, etc. are preferably used. Further, as the material B, any material can be used as long as it can be molded, but general synthetic resins and various rubbers are preferably used. This material B is molded using normal molding techniques.

As the synthetic resin, particularly a foamable polyurethane resin is preferably used, and the unfoamed and uncured polyurethane resin is placed in a molding machine and foamed and hardened in the molding machine. When using Ti rubber, unvulcanized rubber is placed in the molded bottom and cured by vulcanization.

Two or more types of materials may be used at the same time. In the case where two types of materials are used as material #'i, material B
When combined, five types of materials are integrally molded into a composite mold.

One of the interesting operational examples of the present invention is the case where a material having fibrous or sponge-like voids is used as the material. In this case, the empty IIK material B in the material A penetrates and hardens in good condition, so the underlying surface of the material part of the sole of the manufactured nine-metal footwear has a pattern in which material M and material B match 1M. If both are different colors, it will be a pattern of marbled and high yield.

In the present invention, for cutting off the protruding part from the plane, a conventional method for cutting plastics and rubbers is adopted, and a knife is used.

Cutting with hot wire or cutting with puffing is used.

In the present invention, the shapes of the holes and through holes provided in the mold are arbitrarily determined according to the intended cross-sectional shape of the material A. It can be arbitrarily set as circular, oval, square, waveform, etc.

Also, if the molding pressure during composite molding is not very high, either a through hole or a recess may be used, but if the molding pressure is high, pressure will leak, so it is of course better to avoid a through hole.

Hereinafter, an embodiment of the present invention will be explained with reference to the drawings.

FIG. 1 is a schematic cross-sectional view of a footwear sole molding lid, and is intended to include depressions, through holes, or holes 5 of a desired shape at desired positions 2 on the surface of the mold 1, as shown in FIG. will be established. Next, as shown in FIG. 3, a separate adjusting member 4 is inserted into the recess 3. Next, the hardening precursor 5 of the integral composite molded sole is injected, injected, or filled and vulcanized into a mold using the above-mentioned mold. When demolded, the integral composite molded product shown in FIG. 4 is obtained. The parts of the member protruding from the bottom pressure surfaces x1 to x2 are cut off to obtain the integral composite sole shown in FIG. 5.

FIG. 6 is a plan view of the sole of a sports shoe obtained by the method of the present invention, and FIG. 7 is a cross-sectional view taken along the line X-X'.

[Brief explanation of the drawing]

Figure 1 is a sectional view of the bottom mold, Figure 2 is a sectional view of the bottom mold with a recess, through hole or through cut, and Figure 5 is a sectional view of the bottom mold with a hollow, through hole or through cut. 4 is a sectional view of a dehumidifying product, FIG. 5 is a sectional view of a product with parts cut out to match the design surface, and FIG. 6 is a sectional view of a product molded by the method of the present invention. A plan view of the sole of the sports shoe, FIG. 7 is a sectional view taken along line X-X'. 1... Bottom design molded lid, 2... Separate adjustment member set position, 3... Darkness, through hole or through cut, 4...
... Separate adjustment member, 5... Cured precursor applicant's agent Kuraya Furuya Figure 1 Figure 3 Figure 4 Figure 6 Figure 7

Claims (1)

[Claims] In the method of manufacturing a composite footwear sole by putting two or more materials into a molding 111 and integrally molding each material, a recess or a penetration of a desired shape is formed at a predetermined position on the surface of the hawk design forming device. After making a hole and inserting the material into this depression or through-hole, the molding gap is filled with another material to perform integral composite molding of the picture material. A method of preparing a composite footwear sole characterized by removing the nine protruding parts.