Color processing technology of foamed shoe material

Abstract

The invention relates to the technical field of shoe material processing, and particularly discloses a color processing technology of a foaming type shoe material, which comprises the following steps: 1, spraying a base material, namely preparing the foaming type shoe material, and spraying primer on the foaming type shoe material, so that the foaming type shoe material and a coating layer can be better combined by the primer; and 2, coating and coloring: putting the foamed shoe material sprayed with the primer into coating equipment, carrying out optical coating, and forming a plurality of layers of solid films with colors on the surface of the foamed shoe material. Compared with a traditional method for coloring by spraying colored paint, the method has the advantages that the operation mode is more environment-friendly, the product has richer color brilliance, exquisite appearance and good texture, the color has the seven-color effect with angle change, the method is not limited to a traditional chemical dyeing solid color effect any more, and market requirements are met.

Description

Technical Field

[0001] The invention relates to the technical field of shoe material processing, and in particular to a color processing technology for foamed shoe materials. Background Art

[0002] Foaming shoe material is an advanced midsole material made by supercritical fluid microporous foaming technology. Compared with traditional chemical foaming, supercritical foaming technology has obvious advantages and can achieve the two goals of lightweight and high elasticity of the midsole at the same time. Supercritical foaming can produce small and uniform bubbles, making the density of the midsole lower, thereby reducing the weight of the shoes and reducing the burden on the user's feet. Supercritical foaming can evenly distribute the bubbles in the midsole material. The buffer structure formed can effectively absorb impact, provide better energy feedback, reduce the pressure on joints and muscles, and also improve the compression resistance, making the midsole more durable. In addition, supercritical foaming does not produce some gases that are harmful to the environment or human body like chemical foaming, and has the advantages of environmental protection and cleanliness.

[0003] However, when existing foamed shoe materials are colored, they are mostly colored by spraying colored paint. This operation method is not environmentally friendly, and has no brightness and saturation. The color is relatively dull, and there is no color change at different angles. It is relatively ordinary and cannot meet market demand. Summary of the invention

[0004] In view of the defects of the above-mentioned prior art, the present invention provides a color processing technology for foamed shoe materials, which is different from the traditional coloring by spraying colored paint. The operation method is more environmentally friendly, and the product has richer color saturation, exquisite appearance, good texture, and color with a seven-color effect with angle changes, and is not limited to the traditional chemical dyeing solid color effect, thereby meeting market demand.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is:

[0006] The color processing technology of foamed shoe materials includes the following steps:

[0007] The first step is to spray the base material, prepare the foaming shoe material, and spray the primer on it. The primer can make the foaming shoe material and the coating layer better combined;

[0008] The second step is coating and coloring. Place the foamed shoe material that has been sprayed with primer into the coating equipment for optical coating to form multiple layers of colored solid films on its surface.

[0009] In the above description, preferably, the primer in the first step is varnish.

[0010] In the above description, preferably, the first step of spraying the primer also includes curing, and a tunnel furnace curing device is used to cure the bright oil.

[0011] In the above description, preferably, the coating equipment in the second step is a bedroom 6-point hindered evaporation equipment.

[0012] In the above description, as a preferred embodiment, the first step of spraying the primer also includes pretreatment, in which the foaming shoe material is cleaned to ensure that its surface is clean and free of oil and dust.

[0013] In the above description, preferably, the third step of inspection is included after the second step, in which the quality of the foamed shoe material after coating and coloring is inspected to check whether the coloring layer is uniform and has no defects.

[0014] In the above description, as a preference, the third step also includes trimming, and when defects are found in the foamed shoe material after coating and coloring, local trimming or rework is performed.

[0015] The beneficial effects of the present invention are as follows: spraying primer on foamed shoe materials, the primer adheres to the surface of the foamed shoe materials, plays a grafting effect, and makes the foamed shoe materials and the coating layer better combined; the foamed shoe materials sprayed with primer are placed in a coating device, optically coated, and a multi-layer solid film with color is formed on the surface thereof, and coloring is performed by optical coating. The high current of resistance evaporation makes the material in the tungsten boat evaporate quickly to achieve a fast film forming speed, which has a good effect of solving the deformation problem and achieving a colorful color effect on the outer surface of the foamed sole. Different from the traditional coloring by spraying colored paint, the operation method is more environmentally friendly, so that the product has richer color saturation, exquisite appearance, good texture, and the color has a seven-color effect with angle changes, and is not limited to the traditional chemical dyeing solid color effect, so as to meet market demand. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of a flow chart of an embodiment of the present invention. DETAILED DESCRIPTION

[0017] In order to more clearly explain the structural features, technical means and specific purposes and functions achieved by the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments:

[0018] This embodiment: Figure 1 As shown, the color processing technology of foamed shoe materials includes the following steps:

[0019] The first step is to prepare the base material and foam shoe material;

[0020] The second step is pretreatment, cleaning the foamed shoe materials to ensure that their surface is clean and free of oil and dust;

[0021] The third step is to spray the primer, which is a bright oil, on the surface of the foamed shoe material after pretreatment, and play a grafting effect, so that the foamed shoe material and the coating layer are better combined;

[0022] The fourth step is curing. The tunnel furnace curing equipment is used to cure the foamed shoe materials after the primer is sprayed. The tunnel furnace curing equipment uses ultraviolet light, LED, and mercury lamps to generate energy to light-cure the primer to achieve instant curing.

[0023] The fifth step is coating and coloring. Put the foamed shoe material sprayed with primer into the coating equipment for optical coating to form multiple layers of solid films with colors on its surface. Optical thin film refers to a film stack composed of one or more layers of thin and uniform dielectric films or metal films deposited on optical parts. When light passes through the layered medium, the reflected light and transmitted light from different interfaces produce light interference in the incident and reflected directions of the light. By using this interference scene, the interference of light is artificially controlled by changing the characteristics of the material and its thickness. The combined film stack forms optical colors by the thickness of the film layer of the high-low refractive index material.

[0024] The coating equipment uses a 6-point barrier evaporation device in the bedroom. The current at each point of the 6-point barrier evaporation device in the bedroom can be adjusted. The device can be turned on and off at any time, the color uniformity is better controlled, and the production capacity can be maximized. It is different from the traditional single-slot barrier evaporation equipment, which cannot adjust the evaporation current of each section, resulting in uneven color, low production capacity, and uncontrollable color.

[0025] The coloring is done by optical coating. The high current of resistance evaporation makes the material in the tungsten boat evaporate quickly to achieve a fast film-forming speed. It has a good effect in solving the deformation problem and achieving a colorful effect on the outer surface of the foamed sole. Different from the traditional coloring by spraying colored paint, the operation method is more environmentally friendly, making the product have richer color saturation, exquisite appearance, good texture, and the color has a seven-color effect with angle changes, rather than being limited to the traditional chemical dyeing solid color effect;

[0026] Step 6: Inspection: Conduct quality inspection on the foamed shoe materials after coating and coloring to check whether the coloring layer is uniform and free of defects;

[0027] Step 7: Repair. If there are defects in the foamed shoe materials after coating and coloring, perform local repair or rework.

[0028] It should be noted that the samples of footwear materials in this embodiment have passed 70,000 bending tests, 50,000 cold bending tests at -10°, and a paint adhesion test of 4B. The tests include a yellowing resistance test with an AATCC rating of 4.5, a hydrolysis test with an AATCC rating of 4.5, and a water washing test with an AATCC rating of 2H.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Therefore, any modification, equivalent replacement, improvement, etc. made to the above embodiment based on the technical solution of the present invention still falls within the scope of the technical solution of the present invention.

Claims

1. A color processing technology for foamed shoe materials, characterized in that: The following steps are involved: The first step is to spray the base material, prepare the foaming shoe material, and spray the primer on it; The second step is coating and coloring. Place the foamed shoe material that has been sprayed with primer into the coating equipment for optical coating to form multiple layers of colored solid films on its surface.

2. The color processing technology of foamed shoe materials according to claim 1, characterized in that: The base coat in the first step is a varnish.

3. The color processing technology of foamed shoe materials according to claim 2, characterized in that: The first step after spraying the primer also includes curing, and the varnish is cured using a tunnel furnace curing equipment.

4. The color processing technology of foamed shoe materials according to claim 1, characterized in that: The coating equipment in the second step is a bedroom 6-point hindered evaporation equipment.

5. The color processing technology of foamed shoe materials according to claim 1, characterized in that: The first step before spraying the primer also includes pretreatment, which is to clean the foam shoe material to ensure that its surface is clean and free of oil and dust.

6. The color processing technology of foamed shoe materials according to claim 1, characterized in that: The third step is to inspect the quality of the foamed shoe materials after coating and coloring to check whether the coloring layer is uniform and free of defects.

7. The color processing technology of foamed shoe materials according to claim 6, characterized in that: The third step also includes trimming. When defects are found in the foamed shoe materials after coating and coloring, local trimming or rework will be carried out.

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