Color-permeable outsole and production process thereof

Abstract

The invention relates to a color-permeable outsole and a production process thereof, and the production process comprises the following steps: (1) selecting particles: respectively selecting semitransparent foaming particles and colored foaming particles; (2) 3D printing of an outsole mold, wherein the outsole mold comprises an upper mold, a middle mold and a lower mold; (3) mould pressing: injecting colored foaming particles between the upper mould and the middle mould to form a colored upper part of the outsole, injecting semitransparent foaming particles between the middle mould and the lower mould to form a semitransparent lower part of the outsole, moving out of the middle mould, and pressing the upper mould downwards to embed the upper part of the outsole into the lower part of the outsole to form a sole blank; and (4) foaming: putting the shoe sole blank into a reaction kettle, then introducing inert gas into the reaction kettle, and expanding and foaming the shoe sole blank so as to prepare the color-permeable outsole, the upper part of the colored outsole and the lower part of the semitransparent outsole of the shoe sole prepared by the production process of the color-permeable outsole are stably connected together and are not easy to separate, so that the color-permeable outsole is not easy to fall off. In addition, people can see the colored outsole inside through the outsole bottom part, and the requirements of young consumers are met.

Description

Technical Field

[0001] The invention relates to the field of sole production, and in particular to a color-transparent outsole and a production process thereof. Background Art

[0002] Shoes are indispensable daily necessities in people's daily life. Their common function is to protect the feet from the harm of the external environment and ensure the safety of walking. With the improvement of living standards, people have more and more functional requirements for shoes. Ordinary daily shoes, labor protection shoes, sports shoes, travel shoes, height-increasing shoes, shock-absorbing shoes, etc. have appeared on the market. In order to better improve the aesthetics of shoes, some stores will make the soles of the shoes into two layers of different colors to obtain a beautiful and layered effect. The existing specific method is mainly to foam the soles first, and then spray two layers of different colored colorants on the outer surface of the soles to make double-layer color soles. The disadvantage of this kind of soles is that they are easy to fade and not durable. Summary of the invention

[0003] In view of the above-mentioned defects in the prior art, the present invention provides a transparent outsole and a production process thereof, and the specific technical solution is as follows:

[0004] A process for producing a transparent outsole comprises the following steps:

[0005] ① Selecting particles, selecting translucent foam particles and colored foam particles respectively;

[0006] ② 3D print out the outsole mold, which includes an upper mold, a middle mold, and a lower mold;

[0007] ③ Molding: inject colored foam particles between the upper mold and the middle mold to form the colored upper part of the outsole, inject translucent foam particles between the middle mold and the lower mold to form the translucent lower part of the outsole, remove the middle mold, press the upper mold downward to embed the upper part of the outsole into the lower part of the outsole to form the shoe sole blank;

[0008] ④ Foaming, placing the shoe blank into a reactor, and then introducing an inert gas into the reactor. The shoe blank is kept under pressure and heat in the reactor for 0.5 to 0.8 hours and then the pressure is quickly released. The shoe blank expands and foams to obtain a transparent outsole.

[0009] As a preferred solution of the present invention, the 3D outsole mold is provided with a plurality of micropores, which are conducive to the formation of pores in the sole blank.

[0010] As a preferred embodiment of the present invention, the pore diameter of the micropores is 2 to 10 nm.

[0011] As a preferred solution of the present invention, the bottom surface of the upper part of the large sole is convex downward, and the lower part of the large sole is formed with a groove matching with the convexity, and the convexity is embedded in the groove.

[0012] As a preferred embodiment of the present invention, the temperature in the reactor is 80-150° C. and the pressure is 15-20 MPa.

[0013] As a preferred embodiment of the present invention, the inert gas is nitrogen and carbon dioxide.

[0014] As a preferred embodiment of the present invention, when the upper mold and the middle mold are closed, the upper part of the outsole is formed at a temperature of 190°C to 200°C and a heating time of 40s to 50s, when the lower mold and the middle mold are closed, the lower part of the outsole is formed at a temperature of 190°C to 200°C and a heating time of 40s to 50s, and when the upper mold and the lower mold are closed, the sole blank is formed at a temperature of 180°C to 200°C and a heating time of 90s to 120s.

[0015] A color-transparent outsole is manufactured by the above-mentioned color-transparent outsole production process. The color-transparent outsole comprises an outsole upper part and an outsole lower part. The outsole upper part is embedded in the outsole lower part. The outsole lower part is translucent and the inner part of the outsole upper part can be seen.

[0016] Beneficial effects: The soles made by the transparent outsole production process of the present invention have a colored outsole upper part and a translucent outsole lower part that are firmly connected together and are not easy to separate, and people can see the colored outsole inside through the outsole lower part, which is very eye-catching and meets the needs of young consumers. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of the product of the present invention;

[0018] Figure 2 It is a structural diagram of the mold of the present invention. DETAILED DESCRIPTION

[0019] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings:

[0020] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the positions or elements referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present invention.

[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] A process for producing a transparent outsole comprises the following steps:

[0023] ① Selecting particles, selecting translucent foam particles and colored foam particles respectively;

[0024] ② 3D print out the outsole mold, which includes upper mold A, middle mold B, and lower mold C;

[0025] ③ Molding: inject colored foam particles between the upper mold A and the middle mold B to form a colored upper part 1 of the outsole, inject translucent foam particles between the middle mold and the lower mold to form a translucent lower part 2 of the outsole, remove the middle mold B, press the upper mold A downward to embed the upper part 1 of the outsole into the lower part 2 of the outsole to form a shoe blank;

[0026] ④ Foaming, placing the shoe blank into a reactor, and then introducing an inert gas into the reactor. The shoe blank is kept under pressure and heat in the reactor for 0.5 to 0.8 hours and then the pressure is quickly released. The shoe blank expands and foams to obtain a transparent outsole.

[0027] Specifically, the 3D outsole mold is provided with a plurality of micropores, which are generated during the manufacturing process of the 3D mold. A large number of micropores are conducive to the entry of gas to form pores in the sole blank, and the formation of pores is conducive to increasing elasticity. The pore diameter of the micropores is 2 to 10 nm, and the pore diameter of the micropores cannot be too large, otherwise the foaming particles will run out.

[0028] Specifically, the bottom surface of the outsole upper part 1 is convex downward, and a groove matching with the convex is formed on the outsole lower part 2, and the convex is embedded in the groove, so that the two parts of the outsole are firmly connected.

[0029] Specifically, the temperature in the reactor is 80-150° C., the pressure is 15-20 MPa, and the inert gases are nitrogen and carbon dioxide.

[0030] Specifically, when the upper mold A and the middle mold B are molded, the upper part of the outsole is formed at a temperature of 190°C to 200°C and a heating time of 40s to 50s. When the lower mold C and the middle mold B are molded, the lower part of the outsole is formed at a temperature of 190°C to 200°C and a heating time of 40s to 50s. When the upper mold A and the lower mold C are molded, the sole blank is formed at a temperature of 180°C to 200°C and a heating time of 90s to 120s.

[0031] A color-transparent outsole is manufactured by the above-mentioned color-transparent outsole production process. The color-transparent outsole comprises an outsole upper part 1 and an outsole lower part 2. The outsole upper part 1 is embedded in the outsole lower part 2. The outsole lower part 2 is translucent and the inner part of the outsole upper part 1 can be seen, thereby increasing the aesthetics.

[0032] The above content is a further detailed description of the present invention in combination with specific preferred implementation modes. It cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as belonging to the protection scope of the present invention.

Claims

1. A process for producing a transparent outsole, characterized in that: The following steps are included: ① Selecting particles, selecting translucent foam particles and colored foam particles respectively; ② 3D print out the outsole mold, which includes an upper mold, a middle mold, and a lower mold; ③ Molding: inject colored foam particles between the upper mold and the middle mold to form the colored upper part of the outsole, inject translucent foam particles between the middle mold and the lower mold to form the translucent lower part of the outsole, remove the middle mold, press the upper mold downward to embed the upper part of the outsole into the lower part of the outsole to form the shoe sole blank; ④ Foaming, placing the shoe blank into a reactor, and then introducing an inert gas into the reactor. The shoe blank is kept under pressure and heat in the reactor for 0.5 to 0.8 hours and then the pressure is quickly released. The shoe blank expands and foams to obtain a transparent outsole.

2. A process for producing a transparent outsole according to claim 1, characterized in that: The 3D outsole mold is provided with multiple micropores, which are conducive to the formation of pores in the sole blank.

3. A process for producing a transparent outsole according to claim 2, characterized in that: The pore size of the micropores is 2 to 10 nm.

4. A process for producing a transparent outsole according to claim 1, characterized in that: The bottom surface of the upper part of the large sole is convex downward, and a groove matching with the convex is formed on the lower part of the large sole, and the convex is embedded in the groove.

5. A process for producing a transparent outsole according to claim 1 or 4, characterized in that: The temperature in the reactor is 80-150°C and the pressure is 15-20Mpa.

6. A process for producing a transparent outsole according to claim 1, characterized in that: Inert gases are nitrogen and carbon dioxide.

7. The process for producing a transparent outsole according to claim 1, characterized in that: When the upper mold and the middle mold are closed, the upper part of the outsole is formed at a temperature of 190°C to 200°C and a heating time of 40s to 50s. When the lower mold and the middle mold are closed, the lower part of the outsole is formed at a temperature of 190°C to 200°C and a heating time of 40s to 50s. When the upper mold and the lower mold are closed, the sole blank is formed at a temperature of 180°C to 200°C and a heating time of 90s to 120s.

8. A color-transparent outsole, characterized in that: The transparent outsole is made by the production process of any one of claims 1-7, and comprises an upper outsole part and a lower outsole part, wherein the upper outsole part is embedded in the lower outsole part, and the lower outsole part is translucent and the inner upper outsole part can be seen.

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