JPH11318509A - Integrally molded structure of foamed shoe innersole and ornamental sheet and its production - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an integrally molded structure of a foamed shoe innersole and an ornamental sheet and a process for producing the same. SOLUTION: The integrally molded structure of the foamed shoe innersole and the ornamental sheet and the process for producing the same. The crude materials of the sizes proportionally reducing the size of finished products include the two corresponding shoe soles 11 of the ornamental sheet 10 and the shoe innersole 11. Perpendicular flank parts 12 of a rectangular shape to be adhered to each other exist between the two corresponding shoe soles 11. When the crude materials of the sizes proportionally reducing the size of finished products are directly put into a high temp. forming mold A1 of 180 deg.C and are heated, the shoe innersole product having the ornamental sheet and the two corresponding shoe soles is obtd. The ornamental sheet is bent and the two corresponding perpendicular flank parts of the rectangular shape of the shoe innersole are adhered, by which the product of the integral structure having the ornamental sheet and the shoe sole is obtd.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an integrally molded structure of an insole made of foam and a decorative sheet and a method for producing the same.
EVA (ethylene vinyl acetate resin) blended at a specified ratio,
A foaming agent, a cross-linking agent and the like are mixed and stirred, and then the foamed mixture is extruded into a coarse material having a reduced proportion to a finished product.

[0002]

2. Description of the Related Art In general, the soles of sports shoes use EVA (ethylene vinyl acetate resin) for the middle layer and abrasion-resistant rubber materials for the bottom layer, and are joined and molded. The EVA (ethylene vinyl acetate resin) foam material at the midsole is rich in elasticity and high in strength, and its main raw material is a mixture of EVA (ethylene vinyl acetate resin), a foaming agent, a cross-linking agent and the like mixed in a prescribed ratio. The foam is agitated, heated and foamed to form a resilient foam material. As an insole material for sports shoes, it has comfort and resilience when worn, and has an effect of absorbing vibration applied to the foot. In fact, the first
As shown in the figure, the parts such as the foamed shoe midsole 2 and the decorative sheet 1 by the conventional manufacturing method are separately molded, then put into a frame, and the peripheral edge 3 of the foamed shoe midsole 2 is bonded and integrated. Therefore, the cost of equipment and mold required by the conventional manufacturing method is high,
In addition, the manufacturing method is not only complicated and difficult, but also the conventional decorative sheet 1 is provided with a frame so that the peripheral edge 3 of the insole 2 made of foam.
Since it is adhered to the site, and then joined by heating and not joined by heat and pressure, there is a problem that the adhesiveness between the peripheral edge 3 of the insole 2 and the decorative sheet 1 is low and not strong. However, there is a drawback that the decorative sheet 1 falls off and the degree of adhesion is low at the bonding portion.

[0003]

The main object of the present invention is to provide:
The present invention provides an integrally molded structure of an insole made of foam and a decorative sheet and a method for producing the same, in which EVA (ethylene vinyl acetate resin), a foaming agent, a cross-linking agent, and the like mixed in a prescribed ratio are mixed and stirred, and then the foamed mixture is mixed. Is to extrude a coarse material having a size proportional to the reduction of the finished product.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention relates to an integrated molding structure of a foamed shoe midsole and a decorative sheet and a method of manufacturing the same. There are two corresponding soles, a seat and a midsole, between which there are rectangular vertical sides which adhere to each other, and a coarse-scaled coarse of this finished product. When the material is directly placed in the high-temperature molding die A1 at 180 ° C. and heated, it undergoes a hot-press expansion action to foam the decorative sheet and the two corresponding soles of the shoe sole, and the decorative sheet is folded and the shoe is folded. By bonding the two corresponding rectangular vertical side portions of the insole, a shoe insole product in which the decorative sheet and the sole are integrally formed is obtained. This allows
The foamed shoe midsole and the peripheral edge decorative sheet of the present invention can be integrally molded, and the strength of the overall structure of the foamed shoe is enhanced.

[0005]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a foamed shoe insole and a decorative sheet according to an embodiment of the present invention; First, as shown in FIGS. 2 to 5,
According to the present invention, EVA (ethylene vinyl acetate resin), a foaming agent, a cross-linking agent and the like blended in a prescribed ratio are mixed and stirred, and then the foamed mixture is made into a coarse material having a size proportional to the size of the finished product, and is smashed. Molding. (Refer to FIG. 3) The coarse material having a size proportional to the reduced size of the finished product includes two corresponding shoe soles 11 of a decorative sheet 10 and a shoe midsole.
Between the two corresponding soles 11 there is a rectangular vertical side 12 which adheres to both sides. Subsequently, when this finished product is heated by directly placing a coarse material having a size proportional to the reduction in a high-temperature molding die at 180 ° C., the coarse material causes a thermal pressure expansion action in the molding die A1. After the specified time, when the molded product is lowered from the molding die A1, the finished product that has been subjected to the heat and pressure action is exposed to air, and the coarse material having a size proportional to the size is expanded at once, and the decorative sheets 10 and 2 are expanded.
The sole product has two corresponding soles 11. Thus, by folding the decorative sheet 10 and bonding the two corresponding rectangular vertical side portions 12 of the shoe midsole, the product of the shoe midsole with the decorative sheet 10 and the sole 11 is completed. . (See FIG. 4.) Then, a thick semicircular shoe heel portion of the same material may be placed at the position of the shoe heel portion of the midsole of the shoe and adhered. Therefore, according to the present invention, it is possible to easily and speedily mold an insole product with a decorative sheet 10 attached thereto (see FIG. 5). There is no need for the adhesive of the peripheral edge contour, and the insole according to the present invention is made by bonding the two corresponding rectangular vertical side surfaces 12 of the shoe sole into one, so that the processing step is ensured, and Not only is the capacity improved, but also there is no difficulty in processing the decorative sheet around the irregular contour of the midsole of the shoe as in the prior art (see FIG. 1). Since the sole 11 structure of the insole is formed by integral foam molding, the entire shoe can withstand severe screw bending force, and the conventional decorative sheet and the adhesive part around the insole of the shoe can be removed during intense exercise. Such adverse effects are eliminated. Thus, the integrated manufacturing method of the foamed shoe midsole and the peripheral decorative sheet not only significantly improves the production capacity of the foamed shoe, but also increases the strength of the foamed shoe.

[0006] In the above, the molding of the decorative sheet 10 which is simple and does not have a complicated press pattern and which has already been foam-molded has been described. After heating, the heated decorative sheet 10 is put into a mold die B1 of an equal proportion, cooled and shaped, and then a complicated pressed pattern on the decorative sheet is extruded. Further, in the present invention, another processing and manufacturing example of a decorative sheet product whose molding is simple and which has already been foam-molded is described. It is directly put into a proportional mold A2 and heated.
Further, the mold is cooled and fixed. In this embodiment, a decorative sheet having a complicated press pattern can be produced by the hot-pressing action of the high-temperature molding die 2. Further, the present invention can produce a decorative sheet 10 having a press pattern of various colors, in which the coarse material of the decorative sheet 10 and the folded small rubber plate are hot-pressed together and foamed to be integrated. Since this small rubber plate is made with a specific molding, color and hardness, the production quality of the decorative sheet for foamed shoes is improved, whereby the present invention provides several sets of the mold B1 and the mold A1 for high-temperature molding. , A2 can meet the quality requirements of the decorative sheet 10, and it is possible to shorten the processing time and reduce the manufacturing cost by adjusting the manufacturing process by providing manufacturing equipment. , Also reduce material consumption,
The production quality of the decorative sheet 10 can be improved.

The foamed mixture of EVA (ethylene vinyl acetate resin) of the present invention is first granulated by an extruder,
The finished product is made by using an injection molding machine to produce a coarse material with a reduced proportion, and the injection-molded coarse material is heated at a high temperature of 180 ° C. Under the action of inflation, an insole product with an embossed decorative sheet 10 and two corresponding soles 11 can be inflated and manufactured, folding the decorative sheet 10 and the two corresponding rectangles of the insole The decorative sheet 1 is formed by adhering the vertical side portions 12 in the shape of a letter and then placing a thick semicircular heel portion of the same material separately at the position of the heel portion of the shoe midsole.
0 can be integrally molded with a shoe midsole product. (See Fig. 5)

In another embodiment of the present invention, as shown in FIG. 6, the left and right contrasting half body decorative sheet 20, the sole 21 and the other half body decorative sheet 30, and the sole 31 are formed by integral foam molding, respectively. By adhering the rectangular vertical side portions 22 of the two corresponding soles 21, 31, the decorative sheet and the product of the sole portion with the midsole can be integrally formed. Regarding another embodiment of the manufacturing method with the insole and the decorative sheet of the present invention, as shown in FIGS.
The decorative sheet 40 and the two corresponding shoe soles 41 are formed by integral foam molding, and the two corresponding shoe mid soles have a bow-shaped vertical side surface 43 at the heel portion. The rectangular vertical side portions 42 and the bow-shaped vertical side portions 43 corresponding to the above are adhered, and a decorative sheet and an insole product with a sole are integrally formed. In addition, as shown in the bottom view of FIG. 8, the adhesive line 45 on the midsole of the shoe of the present invention is located at the center of the entire shoe, so that the adhesive line 45 is at the stepping position of the shoe sole. The shoe decorative sheet of the present invention is an effective invention because the joint portion does not peel off as in the prior art.

[0009]

As described above, according to the integrated molding structure of the foamed shoe midsole and the decorative sheet of the present invention and the method of manufacturing the same, the conventional shoe midsole and the decorative sheet are manufactured separately and then the peripheral contour is adhered. To solve this problem, the shoe sole according to the present invention is such that the sole and the corresponding rectangular vertical side surface are integrally bonded, that is, the decorative sheet and the shoe sole according to the present invention are integrally molded. It has the characteristic. As a result, the entire shoe can withstand severe screw bending, and the strength of the shoe can be increased because the insole and the surrounding decorative sheet are integrally molded,
It is effective in increasing the utility value of the industry.

[Brief description of the drawings]

FIG. 1 is a view showing an adhesive structure of a contour frame and a decorative sheet around a midsole of a conventional foam shoe.

FIG. 2 is a manufacturing process diagram of the embodiment of the present invention.

FIG. 3 is a structural view of a manufacturing method including an insole portion and a decorative sheet according to the present invention;

FIG. 4 is a structural instruction diagram of folding the decorative sheet of FIG. 3 and bonding a corresponding portion of a shoe midsole.

FIG. 5 is a structural instruction diagram of a shoe midsole product having a decorative sheet of the present invention.

FIG. 6 is a structural diagram of another embodiment of the present invention.

FIG. 7 is a structural view of yet another embodiment of a method of manufacturing a shoe midsole portion and a decorative sheet according to the present invention.

FIG. 8 is a plan view of the shoe insole portion and the decorative sheet of FIG.
It is the floor plan which adhered.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Decorative sheet 11 Sole 12 Vertical side part 13 Heel part 101 Press pattern 20 Half body decoration sheet 21 Sole 22 Vertical side part 30 Half body decoration sheet 31 Sole 40 Decorative sheet 41 Sole 42 Vertical side part 43 Bow-shaped vertical side Part 45 Adhesive line

Claims (4)

[Claims] 1. An EVA compounded at a specified ratio in an integrally molded structure of a foamed shoe midsole and a decorative sheet and a method for producing the same.
(Ethylene vinyl acetate resin), whipping agent, cross-linking agent, etc. are mixed and agitated, and then the foamed mixture is thinly molded on a coarse material having a size proportional to the size of the finished product, and the finished product is scaled down. The bulky material has two corresponding soles, a decorative sheet and an insole, between which there is a rectangular vertical side which adheres to each other so that the finished product is 180 ° C directly to the coarse material of the size proportional to the reduction
By heating in the mold for high-temperature molding of the above, the coarse material is subjected to a hot-pressure expansion action in the molding mold, and a decorative sheet and a shoe midsole product having two corresponding shoe soles are foamed and produced. The decorative shoe sheet is characterized in that the decorative sheet is folded and the two corresponding rectangular vertical side surfaces of the shoe inner sole are adhered to each other, thereby forming the decorative sheet and the shoe sole into an integral shoe inner sole product. Integrated molding structure of bottom and decorative sheet and its manufacturing method. 2. The integrated molding structure of a foamed shoe midsole and a decorative sheet and a method of manufacturing the same, wherein the heating and cooling process is performed again on the foamed decorative sheet and two corresponding soles of the shoe sole. 2. The integrally molded structure of a foamed shoe midsole and a decorative sheet according to claim 1, wherein a complicated pressed pattern is pressed and manufactured on the decorative sheet through the following steps. 3. An integrated molding structure of the foamed shoe midsole and the decorative sheet and a method for producing the same, wherein a mixture of EVA (ethylene vinyl acetate resin) is refined into granules by an extruder, and a finished product is reduced in proportion by an injection molding machine. 2. The integrated molding structure of a foamed shoe midsole and a decorative sheet according to claim 1, wherein a coarse material having a size is injected. 4. An integral molding structure of a foamed shoe midsole and a decorative sheet and a method of manufacturing the same, wherein two corresponding heels of the shoe midsole have a bow-shaped vertical side surface. An integral molding structure of the foamed shoe midsole and decorative sheet and the method for producing the same.