CN114670563A

CN114670563A - Patterned coating structure and manufacturing method

Info

Publication number: CN114670563A
Application number: CN202210365246.3A
Authority: CN
Inventors: 杨伟; 熊立; 竹岩
Original assignee: Huizhou TCL Mobile Communication Co Ltd
Current assignee: Huizhou TCL Mobile Communication Co Ltd
Priority date: 2022-04-07
Filing date: 2022-04-07
Publication date: 2022-06-28

Abstract

The invention discloses a patterned coating structure and a manufacturing method, wherein an electroplated metal layer is directly arranged on a shell, the electroplated metal layer is arranged on the shell through a transfer printing process, the bonding force between the electroplated metal layer and the shell is weaker, a first gap is formed between the edge position of the electroplated metal layer and the surface of the shell, and an adhesive layer is arranged on the electroplated metal layer; compared with the prior art, the method has the advantages that a primer layer is not required to be prepared before electroplating, primer procedures are reduced, and the requirement on the adhesive force of the electroplated metal layer on the shell can be met.

Description

Patterned coating structure and manufacturing method

Technical Field

The invention relates to the technical field of pattern manufacturing, in particular to a patterned coating structure and a manufacturing method thereof.

Background

logo (trademark/logo) is often used in combination with products, and for electronic products, especially mobile phones, a pattern is usually formed on the rear cover of the logo, and the pattern can be used as the logo;

the conventional logo mostly adopts an ink printing mode, but for some special logos, such as holographic magic color logos, the reflecting effect and the magic color effect of the logos are poor due to the limitation of the ink; meanwhile, the existing holographic magic color logo is used by directly printing ink on the surface of a product or a coating on the surface of the product, and the logo is easy to scratch or blank in the long-time use process of the product;

therefore, how to make the pattern durable and the appearance better becomes a problem that needs to be improved in the prior art.

Disclosure of Invention

The present application is directed to a patterned coating structure and a method for making the same, so as to solve the problem of how to make a pattern durable and have a better appearance.

The scheme adopted by the application to solve the technical problems is as follows:

in a first aspect, the present application provides a patterned coating structure comprising

A housing;

the electroplated metal layer is arranged on the shell in a transfer printing mode and forms a patterned structure on a local area of the shell, wherein a first gap is formed between at least part of the edge of the electroplated metal layer and the shell;

the bonding layer covers the electroplated metal layer, partially penetrates into the first gap, and bonds the electroplated metal layer and the shell;

and the protective paint layer is adhered to the adhesive layer, and the vertical projection of the protective paint layer on the adhesive layer at least covers the electroplated metal layer.

In some embodiments of the present application, the first gap is continuously disposed along an edge of the plated metal layer.

In some embodiments of the present application, a cross section of the first gap has a gradually expanding structure along a first direction, and the first direction is a direction in which the plated metal layer extends from a middle to an edge.

In some embodiments of the present application, the adhesive layer has an extension portion extending outward between the housing and the protective paint layer, and one side of the extension portion is adhered to the housing and the other side is adhered to the protective paint layer.

In some embodiments of the present application, the protective paint layer includes a first protective sub-layer and a second protective sub-layer sequentially stacked on the electroplated metal layer; wherein the first protective sub-layer is made of a polyurethane resin material, and the second protective sub-layer is made of a photo-curing material.

In some embodiments of the present application, the electroplated metal layer is a magic color metal layer, and the protective paint layer is made of a transparent material or a translucent material.

In a second aspect, the present application also provides a method for making a patterned coating structure, comprising the steps of:

providing a shell;

transferring and arranging a plated metal layer on the shell, wherein the plated metal layer forms a patterned structure on a local area of the shell, and a first gap is formed between at least partial edge of the plated metal layer and the shell;

spraying a pretreating agent on the surface of the electroplating metal layer and at least part of the shell, wherein the pretreating agent is partially infiltrated into the first gaps;

curing the pretreating agent to form an adhesive layer, filling the adhesive layer in the first gap, and bonding the plated metal layer and the shell;

and forming a protective paint layer on the electroplated metal layer, wherein the vertical projection of the protective paint layer on the bonding layer at least covers the electroplated metal layer.

In some embodiments of the present application, the pretreatment agent comprises the following components by mass percent:

45-50% of modified polyurethane acrylate, 8-12% of DAA diacetone alcohol, 3-7% of white water-proof ethylene glycol butyl ether, 8-12% of isopropanol, 12-17% of butyl acetate and 10-15% of ethyl acetate;

the shell is made for the plastic material, the protection lacquer layer is made for PU lacquer or UV lacquer.

In some embodiments of the present application, the step of forming a protective paint layer comprises:

and coating a first protective sub-layer on the electroplated metal layer and the shell, baking and cooling, and baking the first protective sub-layer by adopting the descending step temperature.

In some embodiments of the present application, the step of transfer-printing a plated metal layer on the housing includes:

providing a substrate;

electroplating a first film layer on the substrate;

providing a transfer printing mould corresponding to the electroplated metal layer, and transferring at least part of the first film layer onto the shell through the transfer printing mould to form the electroplated metal layer.

According to the patterned coating structure and the manufacturing method, the electroplated metal layer is directly arranged on the shell, the electroplated metal layer is arranged on the shell through a transfer printing process, the bonding force between the electroplated metal layer and the shell is weak, a first gap is formed between the edge position of the electroplated metal layer and the surface of the shell, the bonding layer is arranged on the electroplated metal layer, on one hand, the bonding layer can penetrate into the first gap to strengthen the connection between the shell and the electroplated metal layer, the adhesive force of the electroplated metal layer on the shell is increased, on the other hand, the bonding layer can also bond the electroplated metal layer and the protective paint layer, the protective paint layer at least covers the electroplated metal layer, and the electroplated metal layer can be subjected to wear-resistant protection through the protective paint layer; compared with the prior art, the method has the advantages that a primer layer is not required to be prepared before electroplating, primer procedures are reduced, and the requirement on the adhesive force of the electroplated metal layer on the shell can be met.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a partial block diagram of a patterned coating structure of the present invention;

FIG. 2 is an overall block diagram of a patterned coating structure of the present invention;

FIG. 3 is a structural view of a protective paint layer of the patterned coating structure of the present invention;

fig. 4 is a schematic top view of the present invention.

Description of the element symbols:

1-shell, 2-plated metal layer, 3-protective paint layer, 4-adhesive layer, 5-first gap, 21-edge, 31-first protective sub-layer, 32-second protective sub-layer, 33-extension, 41-penetration.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments, not all embodiments, of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or including indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present application, the word "exemplary" is used to mean "serving as an example, instance, or illustration. Any embodiment described herein as exemplary is not necessarily to be construed as preferred or advantageous over other embodiments. The following description is presented to enable any person skilled in the art to make and use the invention. In the following description, details are set forth for the purpose of explanation. It will be apparent to one of ordinary skill in the art that the present invention may be practiced without these specific details. In other instances, well-known structures and processes are not shown in detail to avoid obscuring the description of the invention with unnecessary detail. Thus, the present invention is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles disclosed herein.

In the field of electronic products such as mobile phones, a logo (trademark/logo) is an indispensable part of electronic products; the logo can intuitively reflect the influence of the brand to a certain extent, so that the logo is particularly important for the design of the logo; most of the traditional logos are single-color logos, and the process is simple but cannot meet the requirements of brand youth and fashion; at present, part of the logos adopt holographic unreal colors, and different unreal colors and luster appear along with the change of light through the combination of metal colors and iridescence, so that the logos have changeable, cool and science unreal colors, and are an important future development direction in the logo field.

The traditional colorful logo is printed by adopting ink, firstly, the ink with various colors is debugged, and then the ink is printed on the surface of a product, but after the ink is printed, because the thickness of an ink layer is large, and the material components of the ink with different colors are different, a stable and smooth protective paint layer is difficult to prepare on the ink layer, so that the logo printed by the ink is mostly directly exposed, and the ink layer can be easily scratched or blanked in the long-time use process. The multicolor pattern is prepared in a different mode, so that the existing problems can be overcome.

Referring to fig. 1, 2 and 4, the main body of the present embodiment is a patterned coating structure, including a housing 1; the electroplated metal layer 2 is arranged on the outer shell 1 in a transfer printing mode, and the electroplated metal layer 2 forms a patterned structure on a local area of the outer shell 1, wherein a first gap 5 is formed between at least one part of the edge 21 of the electroplated metal layer 2 and the outer shell 1; an adhesive layer 4 covering the plated metal layer 2, wherein the adhesive layer 4 partially penetrates into the first gap 5 and bonds the plated metal layer 2 and the housing 1; and the protective paint layer 3 is adhered to the adhesive layer 4, and the vertical projection of the protective paint layer 3 on the adhesive layer 4 at least covers the electroplated metal layer 2.

The method comprises the following steps of directly arranging an electroplated metal layer 2 on a shell 1, arranging the electroplated metal layer 2 on the shell 1 through a transfer printing process, wherein the bonding force between the electroplated metal layer 2 and the shell 1 is weak, a first gap 5 is formed between the edge position of the electroplated metal layer 2 and the surface of the shell 1, arranging an adhesive layer 4 on the electroplated metal layer 2, on one hand, the adhesive layer 4 can penetrate into the first gap 5 to strengthen the connection between the shell 1 and the electroplated metal layer 2, so that the adhesive force of the electroplated metal layer 2 on the shell 1 is increased, on the other hand, the adhesive layer 4 can also adhere the electroplated metal layer 2 and a protective paint layer 3, at least covering the electroplated metal layer 2 with the protective paint layer 3, and performing wear-resistant protection on the electroplated metal layer 2 through the protective paint layer 3; compared with the prior art, the method has the advantages that a primer layer is not required to be prepared before electroplating, primer procedures are reduced, and the requirement of the adhesion force of the electroplated metal layer 2 on the shell 1 can be met.

It can be understood that the electroplated metal layer 2 is directly arranged on the housing 1, and as the housing 1 is generally made of plastic materials, the electroplated metal layer 2 is transferred to the housing 1 made of plastic materials through a transfer printing process, so that the adhesion effect between the electroplated metal layer 2 and the housing 1 is weaker, no primer is arranged on the housing 1, a plurality of surface pits are formed, and due to the stress effect, the edge 21 of the electroplated metal layer 2 slightly sticks to form a first gap 5 which cannot be perceived by naked eyes; in other words, the first gap 5 is a gap which is easily penetrated due to weak bonding force between the plated metal layer 2 and the can 1.

It can be understood that the adhesion layer 4 is adhered with the electroplated metal layer 2 on one side and the protective paint layer 3 on the other side, so that the bonding strength between the protective paint layer 3 and the electroplated metal layer 2 can be enhanced, and the durability of the protective paint layer 3 can be improved.

In some embodiments, referring to fig. 4, when the adhesive layer 4 covers the plated metal layer 2, the adhesive layer 4 penetrates into the first gap 5 along the edge 21 of the plated metal layer 2 to fill the first gap 5, thereby guiding at least a portion of the bonding between the plated metal layer 2 and the housing 1.

In some embodiments of the present application, referring to fig. 4, the first gap 5 is continuously disposed along the edge 21 of the plated metal layer 2. The continuous first gap 5 enables the formation of the uniform and stable adhesive layer 4, which improves the bonding stability between the plated metal layer 2 and the outer case 1.

In some embodiments, the first gap 5 may also be a continuous and spaced apart tunnel portion, which can be filled by the adhesive layer 4.

In some embodiments of the present application, referring to fig. 2, a cross section of the first gap 5 is a gradually expanding structure along a first direction, and the first direction is a direction in which the plated metal layer 2 extends from a middle portion to an edge 21. The adhesive layer 4 gradually penetrates from the outside to the inside, and the adhesive strength of the upper and lower surfaces in the first gap 5 is enhanced.

In some embodiments of the present application, referring to fig. 2, the adhesive layer 4 has an extension 33 extending outward between the outer shell 1 and the protective paint layer 3, and one side of the extension 33 is adhered to the outer shell 1 and the other side is adhered to the protective paint layer 3. The extension part 33 can strengthen the bonding strength of the protective paint layer 3 and the shell 1, further improve the adhesive force of the electroplated metal layer 2 on the shell 1, and further improve the bonding strength among the electroplated metal layer 2, the shell 1 and the protective paint layer 3.

In some embodiments of the present application, referring to fig. 3, the protective paint layer 3 includes a first protective sub-layer 31 and a second protective sub-layer 32 sequentially stacked on the electroplated metal layer 2; wherein the first protective sub-layer 31 is made of a polyurethane resin material, and the second protective sub-layer 32 is made of a photo-curable material.

In some embodiments, the first protective sub-layer 31 is a PU lacquer layer and the second protective sub-layer 32 is a UV lacquer layer. The PU paint layer has good adhesion effect on the shell 1, can carry out good fixed protection on the electroplated metal layer 2, and the UV paint layer has good wear resistance and can protect the electroplated metal layer 2 from being worn.

In some embodiments, referring to fig. 2, an electroplated metal layer 2, an adhesive layer 4, and a protective paint layer 3 are sequentially disposed on a housing 1 from bottom to top, and the protective paint layer 3 needs to be firstly ground off to wear the electroplated metal layer 2, so that the protective strength of the electroplated metal layer 2 is greatly improved, and the protective paint layer 3 can protect the housing 1 and the electroplated metal layer 2 together; in the existing ink printing, the logo is directly printed on the protective paint layer 3, and the protective paint layer 3 only has the function of protecting the shell 1 and cannot protect the logo.

In some embodiments of the present application, the electroplated metal layer 2 is an illusive-color metal layer, and the particular illusive-color metal layer may be a holographic illusive-color logo, and the protective paint layer is made of a transparent material or a semi-transparent material. More preferably, the adhesive layer 4 is made of a transparent material, so that the adhesive layer 4 can reduce the shielding of the plated metal layer 2.

The electroplated metal layer 2 is of a metal film layer structure, and compared with an ink structure, the metal film layer has a better reflection effect and can form a more excellent holographic multicolor effect.

It is understood that the electroplated metal layer 2 is prepared by optical coating; more specifically, the electroplated metal layer 2 is prepared by vacuum coating; the metal film is obtained by coating the surface with a film, and multiple light beam interference is formed by multiple reflection and projection of light on the metal film, so that film structures with various colorful colors are obtained. In some embodiments, the thickness and refractive index of the metal film layer can be controlled to obtain different intensity distributions, thereby achieving a fantasy color.

It can be understood that the pattern structure refers to a decorative pattern or figure, and specifically can be used as logo, and can also be used as a pattern to increase the aesthetic feeling of the product; in some embodiments, the pattern structure refers to logo disposed on the product.

The main body of this embodiment is a method for fabricating a patterned coating structure, comprising the steps of: providing a shell 1; a plated metal layer 2 is arranged on the housing 1 in a transfer mode, and the plated metal layer 2 forms a patterned structure on a local area of the housing 1, wherein a first gap 5 is formed between at least one partial edge 21 of the plated metal layer 2 and the housing 1; spraying a pretreating agent on the surface of the plated metal layer 2 and at least a part of the outer shell 1, and the pretreating agent partially penetrates into the first gap 5; curing the pretreating agent to form an adhesive layer 4, wherein the adhesive layer 4 is filled in the first gap 5 and adheres the electroplated metal layer 2 and the shell 1; and forming a protective paint layer 3 on the electroplated metal layer 2, wherein the vertical projection of the protective paint layer 3 on the bonding layer 4 at least covers the electroplated metal layer 2.

In some embodiments of the present application, the pretreatment agent comprises the following components in percentage by mass: 45-50% of modified polyurethane acrylate, 8-12% of DAA diacetone alcohol, 3-7% of white water-proof ethylene glycol butyl ether, 8-12% of isopropanol, 12-17% of butyl acetate and 10-15% of ethyl acetate; the shell 1 is made of plastic materials, and the protective paint layer 3 is made of PU paint or UV paint.

It can be understood that the pretreatment agent can be uniformly sprayed on the surface of the electroplated metal layer 2 by spraying the pretreatment agent to form the bonding layer 4, so as to form a flat film structure with uniform performance.

Wherein, the CAS number of DAA is 123-42-2, the CAS number of white water prevention is 111-76-2, the CAS number of isopropanol is 67-63-0, the CAS number of butyl acetate is 123-86-4, and the CAS number of ethyl acetate is 141-78-6. The pretreating agent can also improve the corrosion resistance to the plated metal layer 2.

In some embodiments, the pretreatment agent comprises the following components in percent by mass: 48% of modified urethane acrylate, 10% of DAA (diacetone alcohol), 5% of white water (ethylene glycol butyl ether), 10% of isopropanol, 15% of butyl acetate and 12% of ethyl acetate. The electroplated metal layer 2 of the product prepared by the component proportion of the embodiment is not easy to fall off, and the inspection standard of coating products is completely met.

It is understood that the urethane acrylate can promote the bonding between the metal and plastic layers, and this embodiment can use the modified urethane acrylate to make it more easily penetrate into the first gap 5, and can expand the range of the first gap 5 to promote the bonding between the plated metal layer 2 and the housing 1.

In some embodiments of the present application, the step of forming the protective lacquer layer 3 comprises: the first protective sub-layer 31 is coated on the electroplated metal layer 2 and the housing 1, and is baked and cooled, and the first protective sub-layer 31 is baked at a decreasing step temperature. The first protective sublayer 31 covers the electroplated metal layer 2, and as the electroplated film layer has a certain thickness and the surface of the shell 1 is not completely flat, the reduced step temperature bakes the first protective sublayer 31, so that the curing speed of paint can be slowed down, and the flatness of the surface of the first protective sublayer 31 after covering the electroplated metal layer 2 is further improved.

More specifically, the step of transferring the electroplated metal layer 2 on the housing 1 and the protective paint layer 3 comprises the following steps: coating a PU paint layer on the electroplated metal layer 2, and baking and cooling; and coating a UV paint layer on the PU paint layer, leveling and then carrying out UV illumination curing. PU lacquer layer covers on plating metal layer 2, because plating metal layer 2 only has the local area of shell 1, leads to PU lacquer layer unevenness easily, and the ladder temperature that descends step is toasted PU lacquer layer, can postpone the solidification rate of paint, and then improves the roughness on PU lacquer layer surface.

The electroplating metal layer 2 is protected by arranging the two layers of structures, the adhesion force of the electric coating layer can be improved while the wear-resistant effect is enhanced, only one wear-resistant layer is arranged in the prior art, the adhesion force is enough, and no motor is arranged on the two layers of structures.

It is understood that the PU paint used in the present application is a polyurethane resin paint, which is divided into a two-component polyurethane paint and a one-component polyurethane paint, wherein the two-component polyurethane paint is generally composed of isocyanate prepolymer (low molecular urethane polymer) and hydroxyl-containing resin, is generally called as a curing agent component and a main agent component, and is generally used by matching the main agent, the curing agent and a diluting agent.

It can be understood that the UV paint adopted by the application is a photocuring paint, takes ultraviolet light as paint curing energy, does not need heating, can be rapidly cured to form a film on various substrates, and mainly comprises photosensitive resin, a photosensitizer (photoinitiator) and a diluent. The principle of UV paint curing by illumination is that an initiator absorbs ultraviolet light to generate free radicals to initiate the reaction and curing of monomers and oligomers.

In some embodiments of the present application, the step of disposing the plated metal layer 2 includes: providing a substrate; electroplating a first film layer on the substrate; providing a transfer printing mould corresponding to the electroplated metal layer 2, and transferring at least part of the first film layer onto the shell 1 through the transfer printing mould to form the electroplated metal layer 2.

If the desired pattern is directly plated on the housing 1, it is difficult to obtain the desired pattern, and even if the plating is performed using a jig, some extra patterned coating structure is attached to the periphery of the pattern, so that the desired pattern can be directly transferred to the housing 1 by a transfer mold by a transfer method. In some embodiments, the substrate is made of PET material.

It is to be noted that in the present application, transfer means a printing method by means of an image or a coating on an intermediate carrier film, which is transferred to a support with a corresponding pressure. The desired print pattern can be obtained by adjusting the pattern of the transfer mold.

In some embodiments of the present application, a method of making a patterned coating structure includes:

1) and cutting the substrate: cutting a large PET film into small-sized substrates in a cutting die mode and the like, so that optical coating is conveniently carried out;

2) and optical coating: carrying out optical coating on a substrate to form a holographic colorful first film layer;

3) and cleaning the shell 1: removing impurities such as surface grease and particles of product materials (required for smoothness B2 level polishing) by using alcohol and degreasing oil bonded non-woven fabrics, and wiping the product clean;

4) electrostatic dust removal: the high-voltage electrostatic gun is used for electrically separating dust-containing gas when the dust-containing gas passes through a high-voltage electrostatic field, and dust particles and negative ions are combined to be charged negatively and then tend to be discharged and deposited on the surface of an anode, so that the surface of a product material is cleaner;

5) and transfer printing: applying pressure to transfer the first film layer part to the shell 1 by using a transfer printing mould with a logo pattern, and forming a plated metal layer 2 of the logo pattern;

6) and preparing an adhesive layer 4: spraying a pretreatment agent on a product through a high-pressure spray gun to form an adhesive layer 4, wherein the film thickness is controlled to be 5-6 mu m;

7) and primary baking: passing the product sprayed with the pretreatment agent through a baking line at 50 deg.C for 15min to fully solidify the pretreatment, and cooling with a line body at 20 deg.C for 10 min;

8) preparing a first protective sublayer 31: spraying PU paint with high transmittance characteristic color on the product by a high-pressure spray gun, wherein the film thickness is 5-6 μm;

9) and secondary baking: the product is subjected to step baking at 70-60-50 ℃ for 15min by a baking line, and the PU paint is fully cured and then cooled by a line body at 20-30 ℃ for 10 min;

10) preparing a second protective sublayer 32: spraying transparent UV gloss oil on a product, setting the viscosity of paint to be 9.5s, and controlling the film thickness to be about 23 mu m to realize the brightness effect;

11) leveling: the product sprayed with the UV gloss oil passes through a conveying line, the solvent on the surface is volatilized within 5min, and the paint film is leveled while the gas is volatilized, so that the flatness and the glossiness of the paint film are ensured;

12) and UV light curing: the product after leveling is irradiated by ultraviolet rays through a UV lamp with the energy of 1000-²And fully curing the UV paint.

In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and parts that are not described in detail in a certain embodiment may refer to the above detailed descriptions of other embodiments, and are not described herein again.

Having thus described the basic concept, it will be apparent to those skilled in the art that the foregoing detailed disclosure is to be considered merely illustrative and not restrictive of the broad application. Various modifications, improvements and adaptations to the present application may occur to those skilled in the art, although not explicitly described herein. Such alterations, modifications, and improvements are intended to be suggested herein and are intended to be within the spirit and scope of the exemplary embodiments of this application.

Also, this application uses specific language to describe embodiments of the application. Reference throughout this specification to "one embodiment," "an embodiment," and/or "some embodiments" means that a particular feature, structure, or characteristic described in connection with at least one embodiment of the present application is included in at least one embodiment of the present application. Therefore, it is emphasized and should be appreciated that two or more references to "an embodiment" or "one embodiment" or "an alternative embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, some features, structures, or characteristics of one or more embodiments of the present application may be combined as appropriate.

Similarly, it should be noted that in the foregoing description of embodiments of the application, various features are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure aiding in the understanding of one or more of the embodiments. This method of disclosure, however, is not intended to imply that more features are required than are expressly recited in the claims. Indeed, the embodiments may be characterized as having less than all of the features of a single embodiment disclosed above.

Numerals describing the number of components, attributes, etc. are used in some embodiments, it being understood that such numerals used in the description of the embodiments are modified in some instances by the use of the modifier "about", "approximately" or "substantially". Unless otherwise indicated, "about", "approximately" or "substantially" indicates that the number allows a variation of ± 20%. Accordingly, in some embodiments, the numerical parameters used in the specification and claims are approximations that may vary depending upon the desired properties of the individual embodiments. In some embodiments, the numerical parameter should take into account the specified significant digits and employ a general digit preserving approach. Notwithstanding that the numerical ranges and parameters setting forth the broad scope of the range are approximations, in the specific examples, such numerical values are set forth as precisely as possible within the scope of the application.

For each patent, patent application publication, and other material cited in this application, such as articles, books, specifications, publications, documents, and the like, the entire contents of which are hereby incorporated by reference into this application, except for application history documents that are inconsistent with or conflict with the contents of this application, and except for documents that are currently or later become incorporated into this application as though fully set forth in the claims below. It is noted that the descriptions, definitions and/or use of terms in this application shall control if they are inconsistent or contrary to the present disclosure.

The technical solutions provided by the embodiments of the present application are described in detail above, and the principles and embodiments of the present invention are explained herein by using specific examples, and the descriptions of the above embodiments are only used to help understanding the method and the core ideas of the present invention; meanwhile, for those skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims

1. A patterned coating structure, comprising

A housing (1);

the electroplated metal layer (2) is arranged on the shell (1) in a transfer printing mode, and the electroplated metal layer (2) forms a patterned structure on a local area of the shell (1), wherein at least part of the edge (21) of the electroplated metal layer (2) has a first gap (5) with the shell (1);

an adhesive layer (4) covering the plated metal layer (2), wherein the adhesive layer (4) partially penetrates into the first gap (5) and adheres the plated metal layer (2) and the housing (1);

and the protective paint layer (3) is adhered to the adhesive layer (4), and the vertical projection of the protective paint layer (3) on the adhesive layer (4) at least covers the electroplating metal layer (2).

2. The patterned coating structure according to claim 1, wherein the first gaps (5) are continuously arranged along the edge (21) of the electroplated metal layer (2).

3. The patterned coating structure according to claim 1, wherein the cross-section of the first gap (5) is divergent along a first direction, and the first direction is a direction in which the electroplated metal layer (2) extends from the middle to the edge (21).

4. The patterned coating structure according to claim 1, wherein the bonding layer (4) has an extension (33) extending outwards between the outer shell (1) and the protective lacquer layer (3), the extension (33) being bonded to the outer shell (1) on one side and to the protective lacquer layer (3) on the other side.

5. The patterned coating structure according to claim 1, wherein the protective lacquer layer (3) comprises a first protective sub-layer (31) and a second protective sub-layer (32) sequentially stacked on the electroplated metal layer (2); wherein the first protective sub-layer (31) is made of a polyurethane resin material and the second protective sub-layer (32) is made of a photo-curable material.

6. The patterned coating structure according to claim 1, wherein the electroplated metal layer (2) is a fantasy-coloured metal layer and the protective lacquer layer (3) is made of a transparent or translucent material.

7. A method for making a patterned coating structure, comprising the steps of:

providing a housing (1);

the method comprises the steps of (1) transferring and arranging an electroplated metal layer (2) on the shell (1), wherein the electroplated metal layer (2) forms a patterned structure on a local area of the shell (1), and a first gap (5) is formed between at least one part of the edge (21) of the electroplated metal layer (2) and the shell (1);

spraying a pretreatment agent on the surface of the electroplated metal layer (2) and at least part of the outer shell (1), wherein the pretreatment agent partially penetrates into the first gap (5);

curing the pretreating agent to form an adhesive layer, filling the first gap (5) with the adhesive layer, and bonding the plated metal layer (2) and the housing (1);

and forming a protective paint layer (3) on the electroplated metal layer (2), wherein the vertical projection of the protective paint layer (3) on the bonding layer (4) at least covers the electroplated metal layer (2).

8. The method of claim 7, wherein the pretreatment agent comprises the following components in percentage by mass:

45-50% of modified polyurethane acrylate, 8-12% of DAA, 3-7% of anti-white water, 8-12% of isopropanol, 12-17% of butyl acetate and 10-15% of ethyl acetate;

the shell (1) is made of a plastic material, and the protective paint layer is made of PU paint or UV paint.

9. The method of claim 7, wherein the step of forming a protective lacquer layer (3) comprises:

and coating a first protective sub-layer (31) on the electroplated metal layer (2) and the shell (1), baking and cooling, and baking the first protective sub-layer (31) by adopting a descending step temperature.

10. The method of claim 7, wherein the step of transferring a plated metal layer (2) on the housing comprises:

providing a substrate;

electroplating a first film layer on the substrate;

providing a transfer printing mould corresponding to the electroplated metal layer (2), and transferring at least part of the first film layer onto the shell (1) through the transfer printing mould to form the electroplated metal layer.