KR19990045923A - Multicolor and pattern shoe sole manufacturing method - Google Patents

Abstract

The present invention relates to a method for manufacturing a multicolored patterned shoe sole, and in particular, a mixture of a thermoplastic resin raw material and an additive agent is formed into a mixture of plate-like dough or powder, each of which is formed according to some form and color of a desired shoe sole. It is put into a mold and heated and pressurized to a temperature at which the decomposition of the foaming agent and the crosslinking agent do not occur, thereby forming respective dough pieces according to the desired shape of the shoe sole, pattern, letter, and color. Multicolored patterned shoe sole formed by heating and pressurizing for a certain time so that foaming of foaming agent and reaction of crosslinking agent is put into mold and formed by grinder is processed. It is clear on the side of the sole such as the letter The beautiful patterns can be represented, and that will be clear and precise form the pattern without blurring or distortion even while forming a patterned dichroic complex designs, such as the character color.

Description

Multicolor and pattern shoe sole manufacturing method

The present invention relates to a method of manufacturing a shoe sole, and in particular, heat-pressurizing a mixture of a plate-like dough or powder form formed of a mixture of a thermoplastic synthetic resin raw material and additives to a temperature at which decomposition of the blowing agent and reaction of the crosslinking agent do not occur. By forming the dough pieces according to the shape or pattern and the letter and color of the desired sole, by combining and laminating the respective dough pieces into a foam mold by heating and pressing for a predetermined time so that the foaming agent and the reaction of the crosslinking agent occurs. As the multicolored patterned shoe sole is formed, each dichroic border is not mixed with each other so that the boundary is clearly revealed, and complex patterns such as letters can be vividly and beautifully expressed on the sides of the sole, but without the color bleeding or distortion. Can form accurate pattern Pattern foamed shoe sole relates to a method of manufacturing the same.

Commonly used shoes are used to manufacture soles made of various materials. In particular, sponges, rubbers, urethanes, etc. are widely used because of their light weight, excellent cushioning effect, and low price.

However, in order to express various colors on the sole, it is limited to the desired part of the sole and partially paint by spraying the paint with an injector or dipping the sock in the paint so that the entire color of the sole is buried. As well as forming a sole, by mixing the pigment in the raw material to form a shoe sole of a different color, and by adhering the shoe sole with a different color with each other to produce a shoe sole expressing a different color, but the method of painting only on the surface Sole formed by using a shoe for a long time when the painted portion is worn, there is a disadvantage that the color was not visible, the pigment is mixed with the raw material to form a shoe sole of different colors and the sole of the different color with an adhesive Shoe soles formed by adhering to give a different color are used for a long time. When the adhesive strength of the bonding is reduced, it took a lot of shoe soles is also a problem that separation occurs, and the cost and time required number of manufacturing processes.

In addition, in the case of laminating and foaming different colored dough, each dough is laminated and injected into the foam mold, and when the dough melts, the bonding surfaces of the different dough are cross-linked by foaming agent and crosslinking agent. As it flowed in, it lost its shape and was distorted.

That is, when manufacturing a shoe sole having two colors of white and black conventionally, as shown in FIG. 1, thermoplastic synthetic resin materials such as EVA (ethylene vinyl acetate) and polyethylene are mixed with chemicals such as foaming agent, crosslinking agent and color pigment. The mixture 11 was mixed with the mixer 12 to form a white dough 13a and a black dough 13b in a plate shape, and an appropriate amount of the white dough 13a and the black dough 13b was formed to form a shoe sole. Laminated into the mold (14) mounted on the hydraulic press 15, and pressurized with a hydraulic press 15 for a predetermined time to pressurize the pressure of the hydraulic press 15 when crosslinking of the mixture and decomposition of the blowing agent is properly made It was removed abruptly to form a plate-shaped foam in which white and black were laminated. The unnecessary circumferential debris attached to the plate-shaped foam in which white and black were laminated was cut and arranged. While, the sole 16 was formed by cutting to the shape of the desired sole.

However, when manufacturing a bi-color sole as in the prior art as described above, the appropriate amount is laminated to a mold mounted on a hydraulic press so as to form a shoe sole desired bicolor, and heated and pressed for a predetermined time with a hydraulic press to form a bi-color foam. At this time, the shape of the mold and the shape of the inserted dough is somewhat different. When the dough is foamed, the dough foaming into the empty space in the mold expands and flows. It is distorted in a different form than poetry.

Even when the conventional white dough and the black dough are stacked to form a two-colored shoe sole, the white dough and the black dough flow in the mold and are mixed with each other in the bonding boundary so that the boundary line does not appear clearly, in particular, in the shape of the shoe sole. When white dough and black dough are formed and laminated on the hydraulic press so that the pattern is expressed and heated and pressurized, when the dough is melted by the pressure, foaming and crosslinking reaction of the hydraulic press, the pattern formed at the junction between the white dough and the black dough Problems such as distorting and spreading in all directions of front, rear, left and right, and up and down to form a pattern different from a desired pattern.

Thus, various methods were used to form a clear and beautiful pattern on the shoe sole, but a method of manufacturing a multi-colored foam shoe sole that can solve the problems of ease of manufacture and cost, etc. has not been presented.

Therefore, an object of the present invention is to provide a method for producing multicolored patterned shoe sole, which allows a vivid pattern of dichroic to be easily expressed on a shoe sole.

In addition, an object of the present invention is to provide a method for producing multicolored patterned foam shoe sole to be represented in the shoe sole more complex and sophisticated pattern or character.

In order to achieve the above object, the present invention is to prepare a multi-colored shoe sole using a resin foam, by mixing a mixture of thermoplastic synthetic resin raw materials such as EVA, polyethylene, and additives such as foaming agent, crosslinking agent and color pigment by mixing with a mixer A mixture of plate-like dough or powder is formed for each desired color and finally put into each mold formed according to the desired shape and color of the sole of the shoe so that the decomposition of the blowing agent and the reaction of the crosslinking agent do not occur in the injection molding machine or the press device. By heating and pressing to finally form each piece of dough or liquid dough according to the desired shape or pattern and color and the shape of the sole, and finally to the overall shape of the shoe sole and the dough of the last Volume and mold for the same type of foam mold Is injected, assembled, or laminated so as to match exactly, and the foam is formed by heating and pressing for a predetermined time so that the foaming of the foaming agent and the reaction of the crosslinking agent occur, and the foam is collectively processed with a grinder not shown in the drawing to form a multicolored pattern. It provides a multi-colored patterned foam manufacturing method characterized in that the sole is formed.

1 is a process chart of a conventional multi-color shoe manufacturing method.

2 is a process diagram of a first embodiment according to the present invention;

3 is a process diagram of a second embodiment according to the present invention;

<Description of the reference numerals for the main parts of the drawings>

1: Mixture 2: Mixer

3: dough 4: individual mold

5: 1st press apparatus 6, 6a, 6b: dough paper piece

6c: Groove 7: Foaming mold

8: second press device 9: multicolored patterned shoe sole

Hereinafter, the present invention will be described with reference to the accompanying drawings.

Mixture (1) mixed with thermoplastic resin raw materials such as EVA and polyethylene according to a predetermined ratio with respect to the shoe soles for producing additives such as foaming agents, crosslinking agents and color pigments was mixed with a mixer (2) to form the dough (3). Or powder mixture 3a is formed for each desired color,

The mixture 3a of the dough or powder form of the plate 3 is finally put into each individual mold 4 formed according to the shape and color of the desired shoe sole, and the foaming agent is injected in the injection molding machine or the first press device 5. By heating and pressurizing to a temperature at which no decomposition and crosslinking agent occurs, finally forming the respective dough pieces (6) (6a) (6b) or liquid dough according to some form or pattern letters and colors of the desired sole,

Each of the dough pieces 6, 6b and 6c or the liquid dough is injected, assembled or laminated in exactly the same size and shape as the foam mold 7 having the same shape as the overall shape of the sole desired. To form a foam by heating and pressurizing in a second press apparatus 8 for a predetermined time so that foaming of the foaming agent and reaction of the crosslinking agent occur.

The foam is collectively processed with a grinder (not shown) to form a multicolored patterned shoe sole 9 to produce a multicolored patterned shoe sole.

Therefore, the first embodiment of the present invention will be described in detail with reference to Figure 2, a mixture of thermoplastic synthetic resin raw materials such as EVA, polyethylene and the like, additives such as blowing agents, crosslinking agents and color pigments according to a predetermined ratio (1). ) By mixing with a mixer (2) to form a plate-like dough (3) for each desired color,

Finally, each of the individual molds 4 formed according to the shape and color of the desired sole is put into each individual mold 4 and heated and pressurized to a temperature at which the decomposition of the blowing agent and the reaction of the crosslinking agent do not occur in the first press device 5. Form each piece of dough (6) according to some form or pattern letters and colors,

Finally, the raw paper pieces 6 formed in the above process are laminated and placed in the foam mold 7 having the same shape as the overall shape of the desired sole so as to exactly match the volume and shape thereof so that the foaming of the foaming agent and the reaction of the crosslinking agent occur. Heated and pressurized in the second press apparatus 8 for a predetermined time so that

The foam formed through the second press apparatus 8 is cut, cut, and processed together with a grinder to form a multicolored patterned shoe sole 9.

Therefore, the dough pieces (6) are put in exactly the foam mold (7), so no gap is generated, so that the stacked state of the dough in the foam mold (7) does not move, so that the boundary of each of the two different color dough sheets (6) Not only do not mix with each other, the boundary is clearly revealed, and each of the dough pieces 6 can be molded into various shapes as desired, so that a clear pattern is expressed on the side of the shoe sole 9. In addition, some distortions occurring on the outer surface of the raw paper pieces 6 are only to be removed by cutting during the final grinder processing, so the final shoe sole shows a clean and clear pattern.

Then, the different color dough pieces 6 are put into the individual mold 4 as many times as necessary according to the shape of the side pattern of the shoe sole and formed a plurality through the first press device 5 to the foam mold (7) By laminating and heat-pressing in the second press apparatus 8, the multicolored patterned foam shoe sole 9 which can express various patterns clearly is formed.

A second embodiment of the present invention will be described in detail with reference to FIG. 3.

A mixture (1), which is a mixture of thermoplastic synthetic resin raw materials such as EVA and polyethylene, and additives such as a foaming agent, a crosslinking agent, and a color pigment, is mixed with a mixer (2) to obtain a plate-like dough (3) or a powder mixture (3a). Each one by color

The plate-like dough 3 is finally put into an individual mold 4 formed according to the shape and color of the desired shoe sole and heated and pressurized to a temperature at which the decomposition of the blowing agent and the reaction of the crosslinking agent do not occur in the first press device 5. Finally, according to the shape and color of the shoe sole desired to form the raw dough pieces (6a) and liquid or solid dough pieces (6b), respectively,

On one side of the dough piece (6a) according to the individual mold (4) to form a groove (6c) to a predetermined depth according to the pattern of the desired pattern and the shape of the paper or dough piece (6b)

In the groove 6c formed in the dough piece 6a, a solid dough piece 6b of a solid state is sandwiched or combined, or a liquid dough piece 6b is injected, and finally, the shape of the same shape as that of the overall shape of the shoe sole is desired. Into the foam mold (7) so that the volume and shape exactly match, heat pressurized in the second press device (8) for a predetermined time so that the foaming of the blowing agent and the reaction of the crosslinking agent occurs,

After a predetermined time has elapsed, the foam formed by rapidly removing the pressure of the second press apparatus 8 is collectively processed with a grinder (not shown) to form a multicolored patterned shoe sole 9.

Therefore, when manufacturing the multi-colored patterned sole 9 as in the second embodiment

In the foam mold 7, the dough is not flowed at the time of foaming, so that the dough is laminated or injected, so that the dough is inserted in the groove 6c of the dough piece 6a or at the boundary of the liquid dough piece 6b in the liquid state. They are not mixed with each other, the boundary is clearly revealed, and each raw paper piece 6b can be molded into various shapes as desired, and various and clear patterns are expressed on the side of the sole.

In addition, the groove 6c is formed on the side of the raw paper piece 6a, and the insertion or injection of the dichroic raw paper piece 6b into the groove 6c can form not only a desired pattern but also a pattern of a complicated pattern such as a letter on the sole. It becomes possible.

Therefore, the present invention is not only because the dichroic borders of the respective dichroic patterns are mixed with each other, the boundary is clearly revealed, and the dichroic lichens can be molded into various shapes as desired, so that the beautiful and beautiful patterns can be expressed on the side of the shoe sole. There is.

In addition, it is possible not only to form a different pattern of complex patterns such as letters on one side of the shoe sole, but also have the effect of forming a clear and accurate pattern without discoloring or distorting such complex patterns.

Claims (1)

In manufacturing multicolored shoe soles using resin foam, Mixture 1, which is a mixture of thermoplastic synthetic resin raw materials such as EVA and polyethylene, and additives such as a foaming agent, a crosslinking agent, and a color pigment, is mixed with a mixer 2 to obtain a mixture 3a in the form of a dough or powder in the form of a plate. Each one by color, The mixture 3a of the dough or powder form of the plate 3 is finally put into each individual mold 4 formed according to the shape and color of the desired shoe sole, and the blowing agent or the press device 5 By heating and pressurizing to a temperature at which the crosslinking agent does not occur, finally, each of the dough pieces 6, 6a, 6b, or liquid dough is formed according to the desired shape or pattern and color of the sole. Each of the dough pieces 6, 6b and 6c or the liquid dough is injected, assembled or laminated in exactly the same size and shape as the foam mold 7 having the same shape as the overall shape of the sole desired. To form a foam by heating and pressing for a predetermined time so that foaming of the blowing agent and reaction of the crosslinking agent occur. The method of manufacturing a multi-colored patterned foamed shoe sole, characterized in that to form a multi-colored patterned shoe sole (9) by processing the foam with a grinder not shown in the figure.