阅读说明：本技术 塑料件及其制备方法 (Plastic part and preparation method thereof ) 是由 竹岩 熊立 尹章新 陈余溶 孙嵘 戚启斌 于 2019-09-20 设计创作，主要内容包括：本申请实施例公开了一种塑料件及其制备方法,该塑料件包括叠置的基材层和油漆层,基材层靠近油漆层的一侧设有至少两条间隔分布的三维镭雕纹理。本申请塑料件的基材层上设有三维镭雕纹理,三维镭雕纹理的表面涂布有油漆层,从而使得三维镭雕纹理具有玻璃流光纹理的效果,能够降低制备玻璃流光纹理的成本和工艺复杂度。(The embodiment of the application discloses a plastic part and a preparation method thereof, wherein the plastic part comprises a substrate layer and a paint layer which are superposed, and at least two three-dimensional laser etching textures distributed at intervals are arranged on one side, close to the paint layer, of the substrate layer. Be equipped with three-dimensional radium carving texture on the substrate layer of this application working of plastics, the surface coating of three-dimensional radium carving texture has the paint layer to make three-dimensional radium carving texture have the effect of glass streamer texture, can reduce the cost and the technology complexity of preparation glass streamer texture.)

1. The plastic part is characterized by comprising a substrate layer and a paint layer which are superposed, wherein at least two three-dimensional laser carving textures distributed at intervals are arranged on one side, close to the paint layer, of the substrate layer.

2. The plastic part of claim 1, wherein two adjacent three-dimensional laser etched textures are separated by a distance of at least 0.1 mm.

3. The plastic part of claim 1, wherein the three-dimensional laser etched texture has a thickness of at least 30-35 μm.

4. The plastic part of claim 1, wherein the three-dimensional laser etched texture has a width of at least 0.1 mm.

5. A plastic part according to claim 1, wherein the paint layer comprises a primer layer, a middle paint layer and a top paint layer stacked one on top of the other, the substrate layer being on a side of the primer layer remote from the middle paint layer.

6. A plastic part according to claim 5, wherein the material of the intermediate paint layer is a metallic paint.

7. A method of making a plastic part, comprising:

preparing a target mold cavity, wherein at least two three-dimensional laser etching textures distributed at intervals are arranged on the inner surface of one side of the target mold cavity;

performing injection molding in the target mold cavity to form a substrate layer, wherein the three-dimensional laser etching texture is formed on the surface of one side of the substrate layer;

and coating a paint layer on the surface of one side of the substrate layer on which the three-dimensional laser carving texture is formed.

8. The method of claim 7, wherein the preparing a target mold cavity, wherein an inner surface of one side of the target mold cavity is provided with at least two spaced-apart three-dimensional laser engraved patterns, comprises:

preparing an initial mold cavity;

and carrying out laser etching on the inner surface of one side of the initial mold cavity to form the target mold cavity.

9. The preparation method of claim 7, wherein the paint layer further comprises a primer layer, a middle paint layer and a finish paint layer, and the paint layer is coated on the surface of the substrate layer on the side on which the three-dimensional laser carving texture is formed, and the preparation method comprises the following steps:

coating a primer on the surface of one side of the substrate layer, on which the three-dimensional laser carving texture is formed, to form the primer layer;

coating a primer layer on the surface of one side of the primer layer far away from the substrate layer to form the primer layer;

and coating finish paint on the surface of one side, far away from the primer layer, of the intermediate paint layer to form the finish paint layer.

10. The preparation method of claim 9, wherein the step of coating a finishing coat on the surface of the intermediate paint layer far away from the primer paint layer to form the finishing paint layer comprises the following steps:

and coating finish paint on the surface of one side, far away from the primer layer, of the intermediate paint layer in a flat spraying mode to form the finish paint layer.

Technical Field

The application relates to the field of plastic part preparation, in particular to a plastic part and a preparation method thereof.

Background

The application of glass streamer textures on high-end mobile phones is more and more popular with consumers due to the gorgeous streamer visual effect. But the glass streamer texture is formed by embossing a PET film and then attaching the PET film to glass after film coating treatment. PET (Polyethylene terephthalate) is prepared by exchanging dimethyl terephthalate with ethylene glycol or esterifying terephthalic acid with ethylene glycol to synthesize dihydroxy ethyl terephthalate, and then performing polycondensation reaction. Belongs to crystalline saturated polyester, is milk white or light yellow and highly crystalline polymer, and has smooth and glossy surface. Is a common resin in life. The manufacturing process is complex, the yield is low, and the price is expensive, so that the cost for preparing the glass streamer texture on plastic parts such as mobile phone shells is high, and the process is complex.

That is, in the prior art, the cost of preparing the glass flow texture on plastic parts such as a mobile phone shell is high, and the process is complex.

Disclosure of Invention

The embodiment of the application provides a plastic part and a preparation method thereof, which can reduce the cost and process complexity for preparing glass flow texture.

In order to solve the above problem, in a first aspect, an embodiment of the present application provides a plastic part, the plastic part includes a substrate layer and a paint layer that are stacked, and one side of the substrate layer that is close to the paint layer is provided with at least two three-dimensional laser etching textures that are distributed at intervals.

Wherein the spacing distance between two adjacent three-dimensional laser etching textures is at least 0.1 mm.

Wherein the thickness of the three-dimensional laser carving texture is at least 30-35 mu m.

Wherein the width of the three-dimensional laser carving texture is at least 0.1 mm.

Wherein, the paint layer includes superimposed priming paint layer, intermediate coat layer and finish paint layer, the substrate layer is located one side that the priming paint layer is kept away from the intermediate coat layer.

Wherein, the material of the middle paint layer is metal paint.

In order to solve the above problem, in a second aspect, an embodiment of the present application provides a method for manufacturing a plastic part, the method including:

preparing a target mold cavity, wherein at least two three-dimensional laser etching textures distributed at intervals are arranged on the inner surface of one side of the target mold cavity;

performing injection molding in the target mold cavity to form a substrate layer, wherein the three-dimensional laser etching texture is formed on the surface of one side of the substrate layer;

and coating a paint layer on the surface of one side of the substrate layer on which the three-dimensional laser carving texture is formed.

Preparing a target mold cavity, wherein at least two three-dimensional radium carving patterns distributed at intervals are arranged on the inner surface of one side of the target mold cavity, and the method comprises the following steps:

preparing an initial mold cavity;

and carrying out laser etching on the inner surface of one side of the initial mold cavity to form the target mold cavity.

Wherein, the paint layer still includes priming paint layer, intermediate coat layer and finish paint layer the substrate layer is formed with one side surface coating paint layer of three-dimensional radium carving texture includes:

coating a primer on the surface of one side of the substrate layer, on which the three-dimensional laser carving texture is formed, to form the primer layer;

coating a primer layer on the surface of one side of the primer layer far away from the substrate layer to form the primer layer;

and coating finish paint on the surface of one side, far away from the primer layer, of the intermediate paint layer to form the finish paint layer.

Wherein, the surface of one side of the intermediate paint layer far away from the primer layer is coated with a finish paint to form the finish paint layer, and the process comprises the following steps:

and coating finish paint on the surface of one side, far away from the primer layer, of the intermediate paint layer in a flat spraying mode to form the finish paint layer.

The beneficial effect of this application is: be different from prior art, this application provides a working of plastics, and this working of plastics includes the substrate layer and the paint layer of superpose, and one side that the substrate layer is close to the paint layer is equipped with two at least interval distribution's three-dimensional radium carving texture. Be equipped with three-dimensional radium carving texture on the substrate layer of this application working of plastics, the surface coating of three-dimensional radium carving texture has the paint layer to make three-dimensional radium carving texture have the effect of glass streamer texture, can reduce the cost and the technology complexity of preparation glass streamer texture.

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 application, 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 schematic structural view of an embodiment of a plastic part provided in the embodiments of the present disclosure;

FIG. 2 is a schematic view of a three-dimensional laser etched texture on a substrate layer of the plastic part of FIG. 1;

fig. 3 is a schematic flow chart of an embodiment of a method for manufacturing a plastic part according to an embodiment of the present disclosure.

DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. 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 application.

In the description of the present application, 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", and the like indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be considered as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In this 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 application. 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 application may be practiced without these specific details. In other instances, well-known structures and processes are not set forth in detail in order to avoid obscuring the description of the present application with unnecessary detail. Thus, the present application is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles and features disclosed herein.

The application provides a working of plastics, the working of plastics include the substrate layer and the paint layer of superpose, and one side that the substrate layer is close to the paint layer is equipped with two at least interval distribution's three-dimensional radium carving texture. The following are detailed below.

Referring to fig. 1 and 2, fig. 1 is a schematic structural view of an embodiment of a plastic part provided in the present application; FIG. 2 is a schematic view of a three-dimensional laser etched texture on a substrate layer of the plastic part of FIG. 1.

Referring to fig. 1 and fig. 2, in the embodiment of the present application, the plastic part 10 includes a substrate layer 11 and a paint layer 13 stacked together, and at least two three-dimensional laser engraved patterns 12 are disposed on a side of the substrate layer 11 close to the paint layer 13. Be equipped with three-dimensional radium carving texture 12 on the substrate layer 11 of this application working of plastics 10, the surface coating of three-dimensional radium carving texture 12 has paint layer 13 to make three-dimensional radium carving texture 12 have the effect of glass streamer texture, can reduce the cost and the technology complexity of preparation glass streamer texture.

In the embodiment of the application, the shape of the three-dimensional laser etching texture 12 is a wave shape. In other embodiments, the three-dimensional laser engraved texture 12 may also be rectangular or have other shapes, which is not limited in this application.

Further, the spacing distance between two adjacent three-dimensional laser etching textures 12 is at least 0.1 mm.

Further, the thickness of the three-dimensional laser carving texture 12 is at least 30-35 mu m.

Further, the width of the three-dimensional laser etching texture 12 is at least 0.1 mm.

Further, the paint layer 13 includes a primer layer 131, a middle paint layer 132 and a finishing paint layer 133, which are stacked, and the substrate layer 11 is located on a side of the primer layer 131 far away from the middle paint layer 132.

Further, the material of the intermediate paint layer 132 is a metallic paint. The metallic paint, also called metallic flashing paint, has fine metallic powder (such as aluminium powder and copper powder) added in its binder, and after the light is radiated onto the metallic powder, it is reflected out through the gas film. Thus, it looks as if the metal is flashing. The metallic flashing paint gives people a pleasant, light and novel feeling, and the flashing degree of the metallic flashing paint film can be controlled by changing the shape and the size of the metallic powder; on the outside of the metallic paint, a layer of varnish is usually added for protection. Metallic paints are generally available in both aqueous and solvent borne types. Although the water-based paint is good in environmental protection, metal powder is unstable in water and air and often undergoes chemical reaction to deteriorate, so that the surface of the water-based paint needs to be specially treated, so that the metal powder used in the water-based paint is expensive and limited in use. The medium paint adopts paint with strong metal texture, and the dazzling effect can be highlighted.

Be different from prior art, the present application provides a working of plastics 10, and working of plastics 10 includes the substrate layer 11 and the paint layer 13 of superpose, and one side that substrate layer 11 is close to paint layer 13 is equipped with two at least three-dimensional radium carving textures 12 of interval distribution. Be equipped with three-dimensional radium carving texture 12 on the substrate layer 11 of this application working of plastics 10, the surface coating of three-dimensional radium carving texture 12 has paint layer 13 to make three-dimensional radium carving texture 12 have the effect of glass streamer texture, can reduce the cost and the technology complexity of preparation glass streamer texture.

For a clear description of the method for manufacturing the plastic part 10 according to the embodiment of the present application, please refer to fig. 3, and fig. 3 is a schematic flow chart of an embodiment of the method for manufacturing a plastic part according to the embodiment of the present application.

As shown in fig. 3, the process of manufacturing the plastic part 10 is as follows:

s21: a target mold cavity is prepared.

In this embodiment, a target mold cavity may be prepared in advance, wherein at least two three-dimensional laser etching textures distributed at intervals are disposed on an inner surface of one side of the target mold cavity.

In a specific embodiment, an initial mold cavity is prepared; and carrying out laser etching on the inner surface of one side of the initial mold cavity to form a target mold cavity. And laser etching is carried out on the inner surface of one side of the initial mold cavity to form a target mold cavity.

The laser engraving is to engrave traces by the chemical and physical changes of surface substances caused by the light energy of laser beams, or burn off partial substances by the light energy to display the patterns and characters to be etched; the method can be divided into dot matrix carving and vector cutting according to different carving modes. Dot matrix carving-exactly like dot matrix printing with high definition; the laser head swings left and right, a line consisting of a series of points is carved each time, then the laser head moves up and down to carve a plurality of lines simultaneously, and finally the whole image or character is formed; the scanned figures, characters and vectorized pictures and texts can be carved by using a dot matrix. Vector cutting is different from dot matrix carving, and the vector cutting is carried out on the outline line of the image and text. The mode is usually adopted to carry out penetrating cutting on materials such as wood, paper, acrylic and the like, and marking operation can also be carried out on the surfaces of various materials. Different laser etching modes are selected for the three-dimensional laser etching texture 12 according to specific requirements, and the method is not limited in the application.

Preferably, the material of the target mold cavity is metal. Because the material of the target mold cavity is metal, the texture is laser-etched on the target mold cavity through laser etching, and the obtained texture has better precision compared with the texture directly prepared on plastic.

S22: and performing injection molding in the target mold cavity to form a base material layer, wherein a three-dimensional laser etching texture is formed on the surface of one side of the base material layer.

In the embodiment of the application, a substrate layer 11 is formed by injection molding in a target mold cavity, wherein a three-dimensional radium carving texture 12 is formed on one side surface of the substrate layer 11. Specifically, the injection molding is performed in the target mold cavity through the injection molding machine, acrylic and other materials are injected into the target mold cavity, the injection molded materials are determined according to the specific materials of the substrate layer 11, and the application does not limit the materials. Injection molding is a method for producing and molding industrial products. The products are generally produced by rubber injection molding and plastic injection molding. The injection molding can be classified into injection molding and die casting. An injection molding machine is a main molding device for making thermoplastic plastics or thermosetting materials into plastic products with various shapes by using a plastic molding die, and the injection molding is realized by an injection molding machine and the die. Because the three-dimensional radium carving texture 12 on the substrate layer 11 is produced by injection molding in the target mold cavity, the produced substrate layer 11 has better integrity, and because the three-dimensional radium carving texture 12 on the metal target mold cavity has higher precision, the three-dimensional radium carving texture 12 on the substrate layer 11 also has higher precision.

It should be noted that the three-dimensional laser engraved texture on the target mold cavity matches the three-dimensional laser engraved texture 12 on the substrate layer 11. Specifically, the three-dimensional laser etching textures 12 on the substrate layer 11 have a spacing distance between two adjacent three-dimensional laser etching textures 12 of at least 0.1mm, the thickness of the three-dimensional laser etching textures 12 is at least 30-35 μm, and the width of the three-dimensional laser etching textures 12 is at least 0.1 mm. And carrying out laser etching on the initial mould cavity according to the three-dimensional laser etching texture 12 on the substrate layer 11 to be prepared.

S23: and coating a paint layer on the surface of one side of the substrate layer with the three-dimensional laser carving texture.

In the embodiment of the present application, the paint layer 13 includes a primer layer 131, a middle paint layer 132 and a finishing paint layer 133, which are stacked, and the substrate layer 11 is located on a side of the primer layer 131 far away from the middle paint layer 132. Performing injection molding in a target mold cavity to form a substrate layer 11, and then coating a primer on the surface of one side of the substrate layer 11, where the three-dimensional laser etching texture 12 is formed, to form a primer layer 131; coating a primer layer 131 on the surface of the side far away from the substrate layer 11 to form a primer layer 132; and coating a finishing coat on the surface of the side, away from the primer layer 131, of the intermediate paint layer 132 to form a finishing paint layer 133.

In a specific embodiment, a primer is sprayed on the surface of the substrate layer 11 on which the three-dimensional radium engraved patterns 12 are formed, and then is cured by preheating, so as to obtain the primer layer 131. Preferably, the primer is a UV primer of a photo-curable type. Wherein, after the primer is sprayed, the primer is preheated for 10 minutes at 50 ℃ by adopting an infrared radiation preheating method, and then an ultraviolet light curing method is adopted, the irradiation dose of the ultraviolet light is 800mj/cm ^2, and the curing time is 1-3 minutes.

After the primer layer 131 is obtained, a primer layer 132 is obtained by spraying a primer on the surface of the primer layer 131 and then preheating and curing. Preferably, the intermediate paint is a metallic paint. Wherein, after the Chinese lacquer is sprayed, the Chinese lacquer is preheated for 10 minutes at 65 ℃ by adopting an infrared radiation preheating method, and then an ultraviolet light curing method is adopted, the ultraviolet light irradiation dose is 300mj/cm ^2, and the curing time is 1-3 minutes.

After the intermediate paint layer 132 is obtained, a top paint layer is sprayed on the surface of the intermediate paint layer 132, and then is preheated and cured to obtain a top paint layer 133. Specifically, the topcoat is sprayed on the intermediate paint layer 132 by flat spraying. And (4) flat spraying, namely horizontally placing the surface of the piece to be sprayed for spraying paint. The spray finishing paint is coated in a flat spraying mode, and the finishing paint can be uniformly leveled on the intermediate paint layer 132, so that a smooth surface with good leveling can be obtained, and the dazzling effect is highlighted. After the finish paint is sprayed, the paint is preheated for 10 minutes at 65 ℃ by adopting an infrared radiation preheating method, and then an ultraviolet curing method is adopted, wherein the irradiation dose of ultraviolet is 800mj/cm ^2, and the curing time is 1-3 minutes.

Different from the prior art, the application provides a preparation method of a plastic part, which comprises the following steps: preparing a target mold cavity, wherein at least two three-dimensional laser etching textures distributed at intervals are arranged on the inner surface of one side of the target mold cavity; performing injection molding in a target mold cavity to form a base material layer, wherein three-dimensional laser carving textures are formed on the surface of one side of the base material layer; and coating a paint layer on the surface of one side of the substrate layer with the three-dimensional laser carving texture. Be equipped with three-dimensional radium carving texture on the substrate layer of this application working of plastics, the surface coating of three-dimensional radium carving texture has the paint layer to make three-dimensional radium carving texture have the effect of glass streamer texture, can reduce the cost and the technology complexity of preparation glass streamer texture.

The plastic part and the preparation method thereof provided by the embodiment of the present application are described in detail above, and the principle and the embodiment of the present application are explained by applying specific examples, and the description of the embodiment is only used to help understanding the method and the core idea of the present application; meanwhile, for those skilled in the art, according to the idea of the present application, 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 application.