Shell

Abstract

The utility model relates to a shell. The shell comprises a surface transparent coating layer, a middle coating layer, a bottom coating layer and a plastic layer which are sequentially arranged from top to bottom, the surface, close to the surface transparent coating layer, of the middle coating layer is provided with at least one laser etching area, and the depth of the laser etching area is larger than or equal to the thickness of the middle coating layer. At least one alumite film layer is arranged between the surface transparent coating layer and the middle coating layer; the alumite film layer and the laser etching area have no any overlapping surface / line; wherein the middle coating layer and the bottom coating layer are paint layers; the thickness of the surface transparent coating layer is 40-60 [mu] m, and the light transmittance of the surface transparent coating layer is less than 50%. The method has the advantages that the definition of the laser etching effect of the laser etching area is improved, the adhesion stability of the alumite film in the shell structure is improved, and therefore the shell pattern color contrast ratio and the pattern integrity are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the product shell technical field, especially to a shell. BACKGROUND

[0002] In the prior art, when the device shell is processed, a transparent rubber coating layer is usually sprayed on the surface of the device shell first, and after the transparent rubber coating layer is sprayed, characters, pictures and other patterns are engraved on the transparent rubber coating layer to obtain different product appearance effects.

[0003] However, the characters, pictures and other patterns obtained by directly engraving on the transparent rubber coating layer have poor definition and dark visual effects, which is not conducive to improving the appearance delicacy of the shell. In addition, since the gold-plated anodized aluminum film is often used in the prior art to improve the shell product texture and further improve the shell surface pattern richness, the bonding strength of the gold-plated anodized aluminum film and the transparent rubber coating layer is low, which is easy to fall off from the surface of the gold-plated anodized aluminum film, resulting in the pattern missing. CONTENT OF THE UTILITY MODEL

[0004] In order to solve the problems in the prior art, the present application provides a shell.

[0005] In the first aspect, the present application provides a shell, which adopts the following technical scheme:

[0006] A shell, comprising a surface transparent coating layer, an intermediate coating layer, a bottom coating layer and a plastic layer arranged in sequence from top to bottom; at least one laser engraving area is arranged on the surface of the intermediate coating layer close to the surface transparent coating layer, and the depth of the laser engraving area is greater than or equal to the thickness of the intermediate coating layer;

[0007] At least one anodized aluminum film layer is arranged between the surface transparent coating layer and the intermediate coating layer, and the anodized aluminum film layer does not have any coincident surface / line with the laser engraving area;

[0008] Among them, the intermediate coating layer and the bottom coating layer are paint layers;

[0009] The thickness of the surface transparent coating layer is 40-60μm, and the light transmittance of the surface transparent coating layer is <50%.

[0010] The present application sets the bottom coating layer and the intermediate coating layer (both are paint layers) on the plastic layer, and obtains the laser etching area by laser etching on the intermediate coating layer. The depth of the laser etching area can make the thickness of the bottom coating layer appear, so that the bottom coating layer, the laser etching area and the intermediate coating layer cooperate to form the ideal pattern effect and color matching effect. The laser etching area is set in the intermediate coating layer, which can avoid the poor laser etching effect, unclear pattern and dark visual effect of the transparent rubber paint coating layer in the prior art. Moreover, the anodized aluminum film layer in the present application is located between the intermediate coating layer and the bottom coating layer, and the bonding strength between the anodized aluminum film and the intermediate coating layer and the bottom coating layer is high, and the adhesion is strong. The problem of easy peeling between the transparent rubber paint coating layer and the anodized aluminum film in the prior art does not occur, so the integrity of the shell display pattern is high. Finally, the surface transparent coating layer in the present application is set on the uppermost layer, which can not only avoid the oxidation of the bottom coating layer at the laser etching area due to exposure to air, but also avoid the exposure and wear of the laser etching area pattern, which helps the shell to maintain pattern integrity and aesthetics during use. Further, by selecting a suitable thickness of the surface transparent coating layer and controlling the light transmittance of the surface transparent coating layer to meet the above range, the above performance effects can be achieved without affecting the clarity of the shell pattern, which helps to form the pattern integrity, clarity and color matching effect of the bottom coating layer, the intermediate coating layer, the laser etching area and the anodized aluminum film.

[0011] Preferably, the surface transparent coating layer is a transparent rubber layer.

[0012] The surface transparent coating layer is selected as a transparent rubber layer, so that the shell can present a matte or semi-matte effect, and the formed shell has a delicate and smooth feel, a rubber-like texture and a skin-like touch, giving a comfortable and pleasant feeling. Secondly, the transparent rubber layer can well cover the defects or water lines caused by general injection molding, improving the overall aesthetics of the product. Finally, the transparent rubber layer has high elasticity, scratch resistance, impact resistance, self-recovery and other properties, which can resist scratches and wear in daily use, improve the integrity and durability of the shell pattern.

[0013] Preferably, the color of the intermediate coating layer is different from that of the bottom coating layer.

[0014] By setting two coating layers and controlling the color of the two coating layers, the color selection of the intermediate coating layer and the bottom coating layer can be flexibly adjusted according to actual needs, improving the flexibility of shell pattern selection and color effect matching.

[0015] Preferably, the thickness of the intermediate coating layer is 10-20 μm.

[0016] Preferably, the thickness of the bottom coating layer is 20-30 μm.

[0017] By setting the intermediate coating layer and the bottom coating layer with sufficient thickness, on the one hand, the covering and protection effect of the intermediate coating layer and the bottom coating layer on the bottom shell after cooperation can be ensured to meet the basic corrosion protection and decoration requirements; on the other hand, the thickness of the intermediate coating layer and the bottom coating layer is respectively controlled within a suitable range, so that the bonding strength of each layer can be realized while avoiding the situation that the laser area formed after the intermediate coating layer with high thickness is combined with the bottom coating layer to cause unclear pattern and color contrast, which is helpful to improve the aesthetic effect of the shell.

[0018] Preferably, the thickness of the electrochemical aluminum film layer is 80-200 μm.

[0019] The thickness of the electrochemical aluminum film layer is controlled within the above range, on the one hand, which is helpful to improve the metallic texture and luster of the shell, and the electrochemical aluminum film layer has good wear resistance and corrosion resistance, which can resist wear and corrosion in daily use and improve the integrity of the shell pattern, on the other hand, the presence of the electrochemical aluminum film can further improve the adhesion between the intermediate coating layer and the surface transparent coating layer, thereby helping to reduce the situation that the electrochemical aluminum film peels off from the shell, and significantly improving the integrity of the shell pattern; and since the electrochemical aluminum film can be set to have a certain transparency, the color or pattern of the bottom layer can also be shown through the metal layer of the electrochemical aluminum film, and by adjusting the composition and thickness of the metal layer of the electrochemical aluminum film, different color effects can also be achieved to improve the level of the shell pattern.

[0020] Preferably, an ink layer is arranged on the surface of the surface transparent coating layer.

[0021] By arranging the ink layer on the surface of the surface transparent coating layer, different colors of ink layers can be selected according to actual needs to present different color matching effects, which can widen the application range of the shell according to needs.

[0022] Preferably, the thickness of the ink layer is 5-20 μm, and the reflectivity of the ink layer is 70%-90%.

[0023] By controlling the thickness and reflectivity of the ink layer, the product can present a good matte effect without affecting the visual matching effect of the intermediate coating layer, the bottom coating layer, the electrochemical aluminum film layer and the laser area observed by the user, which is helpful to maintain high clarity of the pattern. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1is a shell structure section view of an embodiment of the present application.

[0025] Figure 2 is a schematic diagram of the position relationship between the anodized aluminum film layer and the laser etching area in the shell structure of an embodiment of the present application.

[0026] Legend: 1, surface transparent coating layer; 2, intermediate coating layer; 21, laser etching area; 3, bottom coating layer; 4, plastic layer; 5, anodized aluminum film layer; 6, ink layer. DETAILED DESCRIPTION

[0027] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The preferred embodiments of the present application are shown in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0028] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "back" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing the specific embodiments and are not intended to limit the present application. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0030] The present application will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0031] The present application discloses a shell, referring to Figure 1The shell comprises, from top to bottom, a surface transparent coating layer 1, an intermediate coating layer 2, a bottom coating layer 3 and a plastic layer 4; the plastic layer 4 comprises a plastic material; the intermediate coating layer 2 and the bottom coating layer 3 are both paint layers, and the color of the intermediate coating layer 2 is different from that of the bottom coating layer 3; the thickness of the intermediate coating layer 2 can be 10 microns, 12 microns, 16 microns or 20 microns, and the color can be yellow, blue or red; the thickness of the bottom coating layer 3 can be 20 microns, 23 microns, 28 microns or 30 microns, and the color can be yellow, blue or red; as long as the color and thickness set can achieve the effect of color matching diversity of the shell and high bonding strength of the intermediate coating layer 2 and the bottom coating layer 3; in this embodiment, the thickness of the intermediate coating layer 2 is 15 microns and the color is yellow, and the thickness of the bottom coating layer 3 is 20 microns and the color is blue.

[0032] The intermediate coating layer 2 is provided with at least one laser etching area 21 on the surface close to the surface transparent coating layer 1, and the depth of the laser etching area 21 is greater than or equal to the thickness of the intermediate coating layer 2; the number of laser etching areas 21 can be one, two, three or eight, and the shape of the laser etching area 21 can be square, circular or irregular; as long as the depth of the laser etching area 21 can meet the requirement of showing the color of the bottom coating layer 3, and the shape of the laser etching area 21 can meet the actual design requirement; in this embodiment, the number of laser etching areas 21 is two, the depth of the laser etching area 21 is equal to the thickness of the intermediate coating layer 2, and the shape of the laser etching area 21 is rectangular. By setting the bottom coating layer 3 and the intermediate coating layer 2 on the plastic layer 4, and setting the color of the two coating layers to be different, and forming a laser etching area 21 domain on the intermediate coating layer 2, the depth of the laser etching area 21 domain is sufficient for the observer to observe the color on the bottom coating layer 3, so that the intermediate coating layer 2, the bottom coating layer 3 and the laser etching area 21 cooperate to form a target pattern and a variety of color configurations, significantly improving the diversity of the pattern set on the shell and the diversity of the color matching.

[0033] At least one anodized aluminum film layer 5 is arranged between the surface transparent coating layer 1 and the intermediate coating layer 2. The thickness of the anodized aluminum film layer 5 can be 80 μm, 100 μm, 130 μm, 150 μm, or 200 μm. The number of the anodized aluminum film layer 5 can be 1, 3, 4, or 10. The shape of the anodized aluminum film layer 5 can be square, circular, or irregular. As long as the thickness and the number of the anodized aluminum film layer 5 can meet the requirements of improving the texture of the shell and the bonding strength between the anodized aluminum film layer 5 and other layers, and the shape of the anodized aluminum film layer 5 can meet the actual design requirements, the anodized aluminum film layer 5 is acceptable. In this embodiment, the thickness of the anodized aluminum film layer 5 is 100 μm, the number of the anodized aluminum film layer 5 is 3, and the shape of the anodized aluminum film layer 5 is rectangular. Any one of the anodized aluminum film layer 5 does not have any overlapping surface / line with any one of the laser-engraved area 21. Refer to Figure 2 The anodized aluminum film layer 5 does not cover the laser-engraved area 21 which can display the color of the bottom coating layer 3. The texture of the pattern formed by the bottom coating layer 3, the intermediate coating layer 2, and the laser-engraved area 21 can be further improved, the probability of the anodized aluminum film layer falling off can be reduced, and the pattern integrity of the shell can be improved.

[0034] The surface transparent coating layer 1 is a transparent rubber layer. The thickness of the surface transparent coating layer 1 can be 40 μm, 45 μm, 50 μm, 55 μm, or 60 μm. The light transmittance of the surface transparent coating layer 1 can be 10%, 20%, 30%, 40%, or 48%. As long as the thickness and the light transmittance can meet the requirements of protecting the pattern integrity of the shell without reducing the aesthetic effect of the shell, the surface transparent coating layer 1 is acceptable. In this embodiment, the thickness of the surface transparent coating layer 1 is 50 μm, and the light transmittance of the surface transparent coating layer 1 is 40%. The pattern integrity of the shell and the laser-engraved area 21 can be protected without affecting the aesthetic effect and the clarity of the pattern of the shell.

[0035] An ink layer 6 is arranged on the surface of the surface transparent coating layer 1. The thickness of the ink layer 6 can be 5 μm, 8 μm, 10 μm, 15 μm, or 20 μm. The reflectivity of the ink layer 6 can be 70%, 75%, 80%, 85%, or 90%. The color of the ink layer 6 can be colorless, blue, red, or the like. As long as the thickness, the light transmittance, and the color can meet the requirements of improving the color matching diversity of the shell without reducing the aesthetic effect of the shell, the ink layer 6 is acceptable. In this embodiment, the thickness of the ink layer 6 is 10 μm, the reflectivity of the ink layer 6 is 85%, and the color of the ink layer 6 is colorless. The different color matching effects can be further presented without affecting the clarity of the pattern of the shell.

[0036] Embodiment 1

[0037] A shell comprises, from top to bottom, a surface transparent coating layer 1, an intermediate coating layer 2, a bottom coating layer 3 and a plastic layer 4; the plastic layer 4 is made of plastic material; the surface transparent coating layer 1 is a transparent rubber layer, with a thickness of 50 μm and a light transmittance of 40%; the intermediate coating layer 2 and the bottom coating layer 3 are both paint layers, and the color of the intermediate coating layer 2 is different from that of the bottom coating layer 3; the intermediate coating layer 2 has a thickness of 15 μm and a yellow color, and the bottom coating layer 3 has a thickness of 20 μm and a blue color; the intermediate coating layer 2 is provided with a laser-engraved area 21 on the surface close to the surface transparent coating layer 1, the laser-engraved area 21 has a depth equal to the thickness of the intermediate coating layer 2, the number of the laser-engraved area 21 is 2, and the shape of the laser-engraved area 21 is rectangular.

[0038] An anodized aluminum film layer 5 is arranged between the surface transparent coating layer 1 and the intermediate coating layer 2, the thickness of the anodized aluminum film layer 5 is 100 μm, the number of the anodized aluminum film layer 5 is 3, the shape of the anodized aluminum film layer 5 is rectangular, and the anodized aluminum film layer 5 has no arbitrary coincident surface / line with the laser-engraved area 21.

[0039] In the shell prepared in the embodiment, the laser-engraved area 21 is arranged in the intermediate coating layer 2, the laser-engraved area 21 has high definition, and the color of the bottom coating layer 3 is exposed at the laser-engraved area 21, so that the intermediate coating layer 2, the bottom coating layer 3 and the laser-engraved area 21 cooperate to form a target pattern matching effect and a target color matching effect; and the anodized aluminum film layer 5 arranged in the intermediate coating layer 2 and the surface transparent coating layer 1 is not easy to fall off, and can further improve the texture and appearance effect of the target pattern in cooperation with the above target pattern, which helps to improve the integrity of the pattern; and the arrangement of the surface transparent coating layer 1 can protect the integrity of the pattern and avoid oxidation of the laser-engraved area 21, without reducing the aesthetic degree of the shell and the definition of the pattern.

[0040] Embodiment 2

[0041] The difference between the embodiment and embodiment 1 is that an ink layer 6 (silk-screen ink) is arranged on the surface of the surface transparent coating layer 1, the thickness of the ink layer 6 is 10 μm, the reflectivity of the ink layer 6 is 80%, and the ink layer 6 is colorless.

[0042] Embodiment 3

[0043] A kind of shell, including surface transparent coating layer 1, intermediate coating layer 2, bottom coating layer 3 and plastic layer 4 arranged in sequence from top to bottom;Plastic layer 4 is plastic glue material;Surface transparent coating layer 1 is transparent rubber layer, its thickness is 40 μm, light transmittance is 30%;Intermediate coating layer 2 and bottom coating layer 3 are all paint layer, and the color of intermediate coating layer 2 and bottom coating layer 3 is inconsistent, the thickness of intermediate coating layer 2 is 10 μm, color is red, the thickness of bottom coating layer 3 is 30 μm, color is yellow;Intermediate coating layer 2 is provided with laser carving area 21 on the surface close to surface transparent coating layer 1, the depth of laser carving area 21 is equal to the thickness of intermediate coating layer 2, the number of laser carving area 21 is 4, the shape of laser carving area 21 is rectangle.

[0044] Surface transparent coating layer 1 and intermediate coating layer 2 are provided with anodized aluminum film layer 5, the thickness of anodized aluminum film layer 5 is 80 μm, the number of anodized aluminum film layer 5 is 2, the anodized aluminum film layer 5, anodized aluminum film layer 5 and laser carving area 21 have no arbitrary coincident surface / line.

[0045] Surface transparent coating layer 1 is provided with ink layer 6 (screen printing ink) on the surface, the thickness of ink layer 6 is 5 μm, the reflectivity of ink layer 6 is 70%, the color of ink layer 6 is yellow.

[0046] Example 4

[0047] A kind of shell, including surface transparent coating layer 1, intermediate coating layer 2, bottom coating layer 3 and plastic layer 4 arranged in sequence from top to bottom;Plastic layer 4 is plastic glue material;Surface transparent coating layer 1 is transparent rubber layer, its thickness is 60 μm, light transmittance is 48%;Intermediate coating layer 2 and bottom coating layer 3 are all paint layer, and the color of intermediate coating layer 2 and bottom coating layer 3 is inconsistent, the thickness of intermediate coating layer 2 is 20 μm, color is yellow, the thickness of bottom coating layer 3 is 20 μm, color is blue;Intermediate coating layer 2 is provided with laser carving area 21 on the surface close to surface transparent coating layer 1, the depth of laser carving area 21 is equal to the thickness of intermediate coating layer 2, the number of laser carving area 21 is 3, the shape of laser carving area 21 is circle.

[0048] Surface transparent coating layer 1 and intermediate coating layer 2 are provided with anodized aluminum film layer 5, the thickness of anodized aluminum film layer 5 is 200 μm, the number of anodized aluminum film layer 5 is 2, the anodized aluminum film layer 5, anodized aluminum film layer 5 and laser carving area 21 have no arbitrary coincident surface / line.

[0049] Surface transparent coating layer 1 is provided with ink layer 6 (screen printing ink) on the surface, the thickness of ink layer 6 is 20 μm, the reflectivity of ink layer 6 is 90%, the color of ink layer 6 is white.

[0050] Compared with the shell structure of example 1, the shell structure of example 2, example 3 and example 4 further sets the silk screen ink on the surface of the surface transparent coating layer, which can realize the technical effect in example 1 and further enrich the color matching effect of the pattern in the shell.

[0051] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application, so: any equivalent changes made according to the structure, shape, principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A housing characterized by: The coating comprises, from top to bottom, a surface transparent coating layer (1), an intermediate coating layer (2), a bottom coating layer (3) and a plastic layer (4); the intermediate coating layer (2) is provided with at least one laser etching area (21) on the surface of the surface transparent coating layer (1), and the depth of the laser etching area (21) is greater than or equal to the thickness of the intermediate coating layer (2); At least one anodized aluminum film layer (5) is arranged between the surface transparent coating layer (1) and the intermediate coating layer (2), and the anodized aluminum film layer (5) does not have any coincident surface / line with the laser etching area (21); The intermediate coating layer (2) and the bottom coating layer (3) are paint layers. The thickness of the surface transparent coating layer (1) is 40-60 μm, and the light transmittance of the surface transparent coating layer (1) is less than 50%.

2. The case according to claim 1, characterized in that: The surface transparent coating layer (1) is a transparent rubber layer.

3. The case according to claim 1, characterized by: The intermediate coating layer (2) and the bottom coating layer (3) are different in color.

4. The case of claim 1, wherein: The thickness of the intermediate coating layer (2) is 10-20 μm.

5. The case of claim 1, wherein: The thickness of the bottom coating layer (3) is 20-30 μm.

6. The case of claim 1, wherein: The thickness of the anodized aluminum film layer (5) is 80-200 μm.

7. The housing according to any one of claims 1-6, characterized in that: An ink layer (6) is arranged on the surface of the surface transparent coating layer (1).

8. The case of claim 7, wherein: The thickness of the ink layer (6) is 5-20 μm, and the reflectivity of the ink layer (6) is 70%-90%.

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