CN214727133U

CN214727133U - Shell with built-in diaphragm

Info

Publication number: CN214727133U
Application number: CN202120462023.XU
Authority: CN
Inventors: 曹祖铭
Original assignee: Shenzhen Yimingyue Technology Co ltd
Current assignee: Shenzhen Yimingyue Technology Co ltd
Priority date: 2021-03-03
Filing date: 2021-03-03
Publication date: 2021-11-16
Anticipated expiration: 2031-03-03

Abstract

The utility model belongs to the technical field of electronic products, in particular to a shell with a built-in diaphragm, which comprises a substrate layer, an injection molding layer, a color layer, a texture layer, an electroplating coating layer and a mirror layer, wherein the color layer, the texture layer, the electroplating coating layer and the mirror layer are sequentially stacked on the front surface of the substrate layer; the back of the base material layer is combined with the inner surface of the injection molding layer. The utility model discloses a shell has following effect: 1. the corner position of the shell cannot be layered and wrinkled; 2. the built-in membrane with color and texture is viewed through the transparent injection molding layer, the stereoscopic impression is strong, and the whole shell has glass texture; 3. prevent to form unevenness's surface on the diaphragm because of the reason of high temperature at the process of moulding plastics to finally project this unevenness's surface on transparent layer of moulding plastics, influence the whole pleasing to the eye degree of shell.

Description

Shell with built-in diaphragm

Technical Field

The utility model relates to an electronic product shell technical field specifically indicates a diaphragm that will realize gradual change color, texture effect locates the shell on the inner wall of plastic casing.

Background

The shell is the indispensable part of electronic product, for example common cell-phone backshell, and present shell is including adopting transparent material rice to pass through the transparent plastic shell that injection molding process made, and the diaphragm that has colour, pattern according to design demand preparation pastes the diaphragm in the internal surface of plastic shell through laminating technology, obtains the shell finished product. The shell manufactured by the laminating process is directly bent and laminated with the membrane, the membrane material is not softened, stretched and laminated by heating, after lamination is carried out, the corner position of the shell is easy to be layered, the lamination of a complex structure can be wrinkled, and the laminating equipment has high investment, complex process and high product cost. Meanwhile, the film for realizing the color and pattern effects is arranged on the back surface of the plastic shell, the visual effect of the film is displayed as a plane effect, no three-dimensional effect is realized, and the plastic texture of the whole shell is obvious. If direct with current diaphragm through the internal surface of injection molding process preparation at the plastic casing, then can have following problem, current diaphragm mostly includes following material layer, be the substrate layer in proper order, offset printing layer (realization colour), texture layer (realization texture effect) and plating layer etc., under the temperature (being greater than 300 degrees centigrade) that injection molding process needs, the softening of each material layer of component diaphragm warp, the surface that causes the diaphragm becomes unevenness, the material that the substrate layer adopted is unanimous with the injection molding material rice that forms the plastic casing, the in-process of moulding plastics, the two fuses into one, then can directly see the unevenness surface of diaphragm through the plastic casing, thereby seriously influence the pleasing to the eye degree of shell.

SUMMERY OF THE UTILITY MODEL

In order to overcome prior art's weak point, the utility model aims to provide a shell of built-in diaphragm sets up the mirror layer in the diaphragm, aims at solving current diaphragm and forms unevenness's surface when moulding plastics to influence the pleasing to the eye problem of shell appearance.

In order to achieve the above object, the utility model adopts the following technical scheme: a shell with a built-in diaphragm comprises a base material layer, an injection molding layer, a color layer, a texture layer, an electroplating coating layer and a mirror layer, wherein the color layer, the texture layer, the electroplating coating layer and the mirror layer are sequentially stacked on the front surface of the base material layer; the back of the base material layer is combined with the inner surface of the injection molding layer.

Preferably, the base material layer is made of any one of PMMA + PC, PET, PMMA, PP, PVC, PS and ABS; the material selected for the substrate layer is consistent with the material of the injection molding layer.

Preferably, the texture layer is made of any one of acrylic polyurethane, two-component polyurethane and polyester.

Preferably, the electroplating coating layer is made of SiO₂、TiO₂、ZRO₂、NB₂O₅、IN₂0₃、ITO、IN₂0₅SN of any material.

Preferably, the mirror layer is made of any one of polyurethane glue, polyester glue, hot melt adhesive and AB glue; the mirror layer is black, that is, the glue is black glue.

Preferably, the injection molding layer and the substrate layer are fused together through an injection molding process; and a hard layer is arranged on the rear surface of the injection molding layer.

The beneficial technical effects are as follows: substrate layer, color layer, texture layer, electroplating coating layer and mirror layer constitute the diaphragm that has the texture effect, set up the diaphragm at the shell material of moulding plastics through injection moulding process, on the internal surface on the layer of moulding plastics promptly, the substrate layer fuses with the layer of moulding plastics as an organic whole to, the utility model discloses a shell has following effect: 1. the corner position of the shell cannot be layered and wrinkled; 2. the built-in membrane with color and texture is viewed through the transparent injection molding layer, the stereoscopic impression is strong, and the whole shell has glass texture; 3. prevent to form unevenness's surface on the diaphragm because of the reason of high temperature at the process of moulding plastics to finally project this unevenness's surface on transparent layer of moulding plastics, influence the whole pleasing to the eye degree of shell.

Drawings

FIG. 1 is a schematic view of a layered structure according to an embodiment of the present invention;

fig. 2 is a schematic view of the layered structure after the stiffening layer is added in the embodiment of the present invention.

Detailed Description

In order to make the technical field of the present invention better understand, the present invention is further described in detail with reference to the accompanying drawings and embodiments.

Materials and equipment used in the following examples are commercially available unless otherwise specified.

As shown in fig. 1, an embodiment of the present invention provides a housing with a built-in diaphragm, which includes a substrate layer 1, an injection molding layer 2, a color layer 3, a texture layer 4, an electroplating coating layer 5, and a mirror layer 6, which are sequentially stacked on a front surface of the substrate layer 1; the back of substrate layer 1 combines together with 2 internal surfaces on the layer of moulding plastics, and the substrate layer setting is on the internal surface on the layer of moulding plastics promptly, just namely with substrate layer 1, color layer 3, texture layer 4, electroplating coating layer 5 and mirror layer 6 constitution have the diaphragm of texture effect built-in the plastic shell.

Here, the inner surface of the injection layer 2 is also understood to be the front surface thereof, and when used in an electronic product, the user directly touches the rear surface of the injection layer, i.e. the outer surface of the injection layer.

The substrate layer 1 is made of any one of PMMA + PC, PET, PMMA, PP, PVC, PS and ABS; PMMA + PC refers to a mixture of PMMA and PC; the material selected by the base material layer is consistent with the material of the injection molding layer; the preferred material on layer 2 of moulding plastics of substrate layer 1 of this embodiment is PC, the layer of moulding plastics is in the same place through the technology of moulding plastics with the substrate layer through the melting of moulding plastics, and during the moulding plastics, substrate layer 1, the layer 2 melting of moulding plastics is in the same place.

The color layer 3 is made of any one of acrylic polyurethane, two-component polyurethane and polyester, and the preferred material in the embodiment is acrylic polyurethane.

The texture layer 4 is made of any one of acrylic polyurethane, two-component polyurethane and polyester, and the preferred material in this embodiment is acrylic polyurethane.

The electroplating coating layer 5 is made of SiO₂、TiO₂、ZRO₂、NB₂O₅、IN₂0₃、ITO、IN₂0₅SN made of any materialAs a preferred material, SiO is used in this embodiment₂、TIO₂。

The mirror layer 6 can be manufactured by filling and leveling process and attaching process, and when different processes are adopted, the selected materials are different.

The mirror surface layer is manufactured on the electroplating coating layer 5 by adopting a filling process, and the method comprises the following specific steps:

s501, preparing a mirror surface mold, and introducing colored glue into one surface of the mirror surface mold;

s502, placing a third sheet on the mirror surface mold, and enabling the surface of the electroplating coating layer to be in contact with colored glue;

s503, rolling on the third sheet by using a roller press to enable the surface of the electroplating coating layer of the third sheet to be completely attached to the colored glue;

s504, curing the colored glue through a thermosetting process, then tearing off the third sheet from the mirror surface mold, and forming a mirror surface layer on the surface of the electroplating coating layer of the third sheet to obtain the membrane with the texture effect and the mirror surface layer 6.

In this embodiment, the colored glue is black glue; the mirror surface sheet is made of any one of metal, glass and plastic.

The colored glue is any one of polyurethane glue, polyester glue and hot melt adhesive (PUR glue). Polyurethane glue is preferred in this embodiment.

Different glue is selected, and the technological parameters are different:

the polyester glue is cured by a thermosetting method and is baked for 60 minutes at the temperature of 80 ℃ by an oven.

The hot melt adhesive is adopted, firstly, the hot melt adhesive is softened into semi-cured glue at the temperature of 100-160 ℃, and after the gluing is finished, the glue is cooled for 30 minutes at normal temperature.

When the mirror layer 6 is manufactured on the electroplating coating layer 5 by adopting a bonding process, a sheet made of black PC or black PET material is directly bonded on the electroplating coating layer 5 by glue, and the mirror layer 6 can be obtained after the glue is cured.

As shown in fig. 2, when the hardness requirement of the rear surface of the injection molded layer of the housing exceeds 2H, it is necessary to harden the surface of the housing, i.e., to provide a hardened layer 7 on the rear surface of the injection molded layer. The back surface of the injection molding layer is the back surface of the shell and is also the surface of the electronic product which is in direct contact with a user.

The specific process is as follows:

s701, placing the shell obtained through injection molding on a jig of a spray coating device, and spray coating a layer of hardening coating liquid on the back of the shell;

s702, leveling the hardening coating liquid and volatilizing the auxiliary agent in the environment with the temperature of 60-80 ℃, then exposing by using a metal halogen lamp or an LED lamp for 3-5 seconds to solidify the hardening coating liquid, and forming a hardening layer on the back of the shell.

In S702, the dominant wavelength of the metal halogen lamp or the LED lamp is 350nm-450 nm.

The mirror layer 6 can be a release film, namely a film layer which can be torn off, when the release film is adopted, pretreatment needs to be carried out on the electroplating coating layer 5, namely, a black covering ink layer is silk-printed on the surface of the electroplating coating layer 5 for shading.

The embodiment of the utility model provides a thickness of each membranous layer structure of shell that obtains is: 0.125-0.175mm of a substrate layer 1, 0.35-1mm of an injection molding layer 2, 0.001-0.01mm of a color layer 3, 0.01-0.03mm of a texture layer 4, 100-600nm of an electroplating coating layer 5, 0.001-0.005mm of a mirror layer 6 and 0.006-0.01mm of a hardening layer 7.

In the above description, it should be noted that the terms "mounted," "connected," and the like are used in a broad sense, and for example, they may be fixedly connected, detachably connected, or integrally connected; the connection may be direct or indirect via an intermediate medium, and the connection may be internal to the two components.

It is to be understood that the above-described embodiments are only some of the embodiments of the present invention, and not all embodiments, and that the appended drawings illustrate preferred embodiments of the present invention, but do not limit the scope of the invention. The present invention may be embodied in many different forms and, on the contrary, these embodiments are provided so that this disclosure will be thorough and complete. All utilize the equivalent structure that the content of the utility model discloses a specification and attached drawing was done, direct or indirect application is in other relevant technical field, all is in the same way the utility model discloses within the patent protection scope.

Claims

1. A shell with a built-in diaphragm comprises a base material layer and an injection molding layer, and is characterized by further comprising a color layer, a texture layer, an electroplating coating layer and a mirror layer which are sequentially stacked on the front surface of the base material layer; the back of the base material layer is combined with the inner surface of the injection molding layer.

2. The housing with the built-in diaphragm of claim 1, wherein the substrate layer is made of any one of PMMA + PC, PET, PMMA, PP, PVC, PS and ABS; the material selected for the substrate layer is consistent with the material of the injection molding layer.

3. The membrane-embedded enclosure of claim 1, wherein said textured layer is made of any one of acrylic polyurethane, two-component polyurethane, and polyester.

4. The membrane-embedded housing of claim 1, wherein said electroplated coating is selected from the group consisting of SiO₂、TiO₂、ZRO₂、NB₂O₅、IN₂0₃、ITO、IN₂0₅SN of any material.

5. The membrane-embedded casing according to claim 1, wherein the mirror layer is made of any one of polyurethane glue, polyester glue, hot melt glue and AB glue; the mirror layer is black.

6. The membrane-embedded casing according to any one of claims 1 to 5, wherein the injection-molded layer and the substrate layer are fused together by an injection molding process; and a hard layer is arranged on the rear surface of the injection molding layer.