Three-dimensional colorful vamp and preparation method thereof

Abstract

The preparation method comprises the following steps: preparing a stainless steel plate, grinding and polishing, and forming a mirror surface effect on the surface of the stainless steel plate; electroplating nickel on the stainless steel plate to form a nickel layer; photoetching a holographic image on the nickel layer to enable the stainless steel plate to form a mother set; coating the mother set with UV photosensitive glue, and then covering the mother set with a PET film; drying, transferring the holographic image on the nickel layer to the PET film, forming an image which is the same as the holographic image on the nickel layer on the PET film, and stripping the PET film transferred with the image from the mother set to obtain a sub-set; coating UV photosensitive glue on the sub-plate, then laying a sheet material, and after drying, transferring an image on the PET film onto the sheet material to form an image which is the same as that on the PET film on the sheet material; and stripping the sheet with the transferred image from the sub-plate, and cutting the sheet to obtain the finished vamp material. The method does not need printing and adding dye, is more environment-friendly, and can be directly applied to shoes.

Description

Technical Field

[0001] The invention belongs to the technical field of shoe uppers, and in particular to a three-dimensional colorful shoe upper and a preparation method thereof. Background Art

[0002] There are many types of shoes, such as sports shoes, casual shoes, leather shoes, etc. Different types of shoes can meet different usage scenarios of users. With the continuous development of people's living conditions, consumers' demand for shoes is getting higher and higher in terms of appearance in addition to comfort.

[0003] Printing patterns and different color effects on the uppers of shoes can improve the appearance of the uppers. At present, the patterns are basically made by printing or directly laminating to form a colorful effect. However, since a large amount of dyes or masterbatches are needed, it brings certain pressure to the environment.

[0004] There are also uppers that are directly molded to create colorful effects, but this type of upper is often molded in a mold, which increases the cost of making the mold. Summary of the invention

[0005] The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art and to provide a three-dimensional colorful shoe upper and a preparation method thereof.

[0006] A method for preparing a three-dimensional colorful shoe upper comprises the following steps:

[0007] Preparing a stainless steel plate, grinding and polishing the stainless steel plate to form a mirror effect on the surface;

[0008] Electroplating nickel on a stainless steel plate to form a nickel layer;

[0009] Photolithography of a holographic image on the nickel layer of a stainless steel plate to form a master of the stainless steel plate;

[0010] Coat the master with UV photosensitive glue, and then cover it with PET film, so that the PET film is bonded and fastened to the stainless steel plate through the UV photosensitive glue;

[0011] Drying, the holographic image on the nickel layer is transferred to the PET film, an image identical to the holographic image on the nickel layer is formed on the PET film, and the PET film with the transferred image is peeled off from the mother plate to obtain a daughter plate;

[0012] Coat UV photosensitive glue on the sub-plate, then lay the sheet. After drying, the image on the PET film is transferred to the sheet, and the sheet forms the same image as that on the PET film.

[0013] The sheet material with the transferred image is peeled off from the sub-plate, and the sheet material is cut to obtain a finished upper material.

[0014] As a further improvement, the sheet material is TPU or PU material.

[0015] As a further improvement, the holographic image on the nickel layer is prepared by combining a microlens to form a pattern, or forming a pattern by a light curvature animation method, or adding a fluorescent agent.

[0016] As a further improvement, the holographic image includes textures, patterns and / or colorful effects.

[0017] As a further improvement, the PET film, the stainless steel plate, the sheet material and the sub-plate are rolled with a roller before drying so that the UV photosensitive glue is evenly spread.

[0018] As a further improvement, the temperature of the PET film and the mother plate is maintained at 70-80° C. during drying, and the temperature of the sheet and the daughter plate is maintained at room temperature during drying.

[0019] As a further improvement, the master plate and the daughter plate can be recycled.

[0020] Compared with the prior art, the present invention has the following beneficial technical effects:

[0021] Using stainless steel plate as a carrier, the holographic image on the nickel layer is transferred to PET through thermal transfer, and then transferred from PET to TPU to form the upper material. No dye is required, the process is simpler, easy to operate, and costs are reduced. No vacuum coating is required, and a colorful effect can be obtained to improve the appearance of the shoes. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the process of the present invention;

[0023] Figure 2 It is a schematic diagram of the product of the present invention. DETAILED DESCRIPTION

[0024] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0025] like Figure 1 As shown, a method for preparing a three-dimensional colorful shoe upper comprises the following steps:

[0026] A stainless steel plate is prepared and polished to form a mirror effect on the surface of the stainless steel plate.

[0027] Nickel is electroplated on the stainless steel plate to form a nickel layer, the thickness of the nickel layer is 1-80 microns.

[0028] The holographic image is photoetched on the nickel layer of the stainless steel plate to form a master plate of the stainless steel plate. The holographic image is usually formed by laser engraving. When viewed from different angles, it can present different color effects, and the colorful effect is remarkable. In order to have a better colorful effect, microlens stacking technology can be added to the holographic image to form a microlens effect with a better three-dimensional sense; or fluorescent agent can be added to form a fluorescent effect; or light curvature animation technology can be used to achieve a pattern effect.

[0029] Coat UV photosensitive glue on the master, and then cover it with PET film, so that the PET film is bonded and fastened to the stainless steel plate through the UV photosensitive glue, and the UV photosensitive glue is evenly spread on the surface of the PET film through roller rolling, so that the PET film and the master are more firmly bonded.

[0030] Drying, the holographic image on the nickel layer is transferred to the PET film, and the PET film forms an image identical to the holographic image on the nickel layer. The PET film with the transferred image is peeled off from the master plate to obtain a daughter plate. Bake and dry in a UV box, the temperature is usually maintained at 70-80℃, and the holographic image on the nickel layer is thermally transferred to the PET film. The peeled master plate can be reused and a new PET is bonded next time.

[0031] Coat the sub-plate with UV photosensitive glue, then lay the sheet. After drying, the image on the PET film is transferred to the sheet, and the sheet forms the same image as that on the PET film. Bake with UV light in a UV box, and keep the temperature at room temperature, so that the image on the PET film is thermally transferred to the sheet. After peeling, the sub-plate can be reused.

[0032] The sheet with the transferred image is peeled off from the sub-plate, and the sheet is cut to obtain the finished upper material. According to the size of the shoe to be applied, the corresponding upper is cut out, and then bonded to the shoe by hot melting or glue.

[0033] During the entire process, no dye needs to be added, and colorful images can be printed through thermal transfer.

[0034] The sheet material is TPU or PU material. When TPU is selected, it can be cut by hot cutting. If PU material is selected, it can be cut directly.

[0035] The holographic image includes textures, patterns and / or colorful effects, forming an intuitive three-dimensional effect.

[0036] In the present invention, a shoe upper with a multi-color dazzling effect is directly formed first, and there is no need to perform printing or electroplating processes on the shoes. In addition, the master plate and the daughter plate can be reused. The same dazzling effect can be achieved by repeatedly using the same daughter plate and the master plate, which saves materials, does not need to add dyes, and is more environmentally friendly.

[0037] By pre-setting master templates with different colorful effects, different sub-templates can be formed to meet the production needs of different types of uppers.

[0038] When peeling off the PET film, the UV photosensitive glue pasted on the stainless steel plate can be cleaned up without affecting the coating of photosensitive glue when preparing a new PET film next time.

[0039] like Figure 2 As shown, the prepared upper material has a colorful effect, and directly using it as an upper can make the applied shoes have more colorful appearance characteristics.

[0040] It should be noted that the above description is not a limitation of the present invention. Without departing from the creative concept of the present invention, any obvious replacement is within the protection scope of the present invention.

Claims

1. A method for preparing a three-dimensional colorful shoe upper, characterized in that: The following steps are involved: Preparing a stainless steel plate, grinding and polishing the stainless steel plate to form a mirror effect on the surface; Electroplating nickel on a stainless steel plate to form a nickel layer; Photolithography of a holographic image on the nickel layer of a stainless steel plate to form a master of the stainless steel plate; Coat the master with UV photosensitive glue, and then cover it with PET film, so that the PET film is bonded and fastened to the stainless steel plate through the UV photosensitive glue; Drying, the holographic image on the nickel layer is transferred to the PET film, an image identical to the holographic image on the nickel layer is formed on the PET film, and the PET film with the transferred image is peeled off from the mother plate to obtain a daughter plate; Coat UV photosensitive glue on the sub-plate, then lay the sheet. After drying, the image on the PET film is transferred to the sheet, and the sheet forms the same image as that on the PET film. The sheet material with the transferred image is peeled off from the sub-plate, and the sheet material is cut to obtain a finished upper material.

2. The method for preparing a three-dimensional colorful shoe upper according to claim 1, characterized in that: The sheet material is TPU or PU material.

3. The method for preparing a three-dimensional colorful shoe upper according to claim 1, characterized in that: The holographic image on the nickel layer is prepared by combining microlenses to form patterns, or by light curvature animation to form patterns, or by adding fluorescent technology to make the patterns more colorful.

4. The method for preparing a three-dimensional colorful shoe upper according to claim 1, characterized in that: The holographic image includes textures, patterns and / or colorful effects.

5. The method for preparing a three-dimensional colorful shoe upper according to claim 1, characterized in that: The PET film, the stainless steel plate, the sheet material and the sub-plate are rolled with a roller before drying to evenly spread the UV photosensitive glue.

6. The method for preparing a three-dimensional colorful shoe upper according to claim 1, characterized in that: The temperature of the PET film and the mother plate is maintained at 70-80° C. during drying, and the temperature of the sheet and the daughter plate is maintained at room temperature during drying.

7. The method for preparing a three-dimensional colorful shoe upper according to claim 1, characterized in that: The master plate and the daughter plate can be recycled.

8. A three-dimensional colorful shoe upper, characterized in that: Prepared according to the method described in any one of claims 1 to 7.

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