Injection molding part with local three-dimensional textures
By pressing the injection layer and the adhesion layer together in the injection cavity and setting a superimposed structure of multiple coloring and UV texture layers, the problem of weak connection between the three-dimensional texture panel and the injection shell is solved, thereby improving the three-dimensional texture effect and gloss of local areas and enhancing the overall visual effect of the injection molded part.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-16
- Publication Date
- 2026-03-27
AI Technical Summary
The existing 3D textured panels are not firmly connected to the injection-molded shell, making them prone to warping or bubbling. Furthermore, the 3D effect in the function button area is not obvious. Existing technologies make it difficult to achieve the zoning of various 3D textures and the improvement of the 3D texture effect in local areas.
The injection molding layer and the adhesive layer are pressed together in the injection molding cavity, and an adhesive layer is set between them. The adhesive layer includes a superimposed structure of multiple coloring layers and UV texture layers. The whole is formed by high temperature and high pressure injection molding, which increases the three-dimensional texture effect and gloss of the local area.
It improves the overall robustness and recognizability of injection molded parts, enhances the three-dimensional texture effect in local areas, improves gloss, and optimizes the overall visual effect.
Smart Images
Figure CN224044787U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of product injection molding parts, in particular to an injection molding part with local three-dimensional texture (such as an injection molding product for water heaters, washing machines and other household appliances or electrical appliances) and its application. BACKGROUND
[0002] Three-dimensional texture is a kind of texture structure that can give the product a three-dimensional surface effect, which has been widely used in electrical appliances. Generally, a three-dimensional texture panel is first prepared, and then the panel is bonded to the injection molding shell surface of the electrical appliance. This method can cause the panel to be not firmly bonded to the injection molding shell, and can easily cause the panel to be warped or bulged. In addition, the existing three-dimensional texture panel is generally set in an entire panel, and the entire panel presents the same three-dimensional texture effect without levels. Especially for the existing panel structure with multiple function keys, the function key area is identified by pasting or spraying colored patterns. This structure, due to the small pasting area, is easily connected to the panel by additional bonding, which can cause the panel to be not firmly bonded. Or, different colored layers are coated in the function key area to distinguish it from other positions. Although this method can improve the visibility of the function keys, it cannot present the three-dimensional texture effect.
[0003]
[0004] A three-dimensional texture effect without levels, especially for the existing panel structure with multiple function keys, the function key area is identified by pasting or spraying colored patterns. This structure, due to the small pasting area, is easily connected to the panel by additional bonding, which can cause the panel to be not firmly bonded. Or, different colored layers are coated in the function key area to distinguish it from other positions. Although this method can improve the visibility of the function keys, it cannot present the three-dimensional texture effect.
[0005]
[0006] The existing technology also has a three-dimensional texture in the function key area to improve the display effect of the three-dimensional texture of the function keys. However, this single three-dimensional texture, due to the small area of the function keys, does not have a clear three-dimensional effect.
[0007] The existing technology also has a three-dimensional texture in the function key area to improve the display effect of the three-dimensional texture of the function keys. However, this single three-dimensional texture, due to the small area of the function keys, does not have a clear three-dimensional effect. SUMMARY
[0008] The present application provides an injection molding part with local three-dimensional texture that can form multiple three-dimensional texture partitions, and can also make the three-dimensional texture effect of the local area more obvious. In addition, the injection molding part with local three-dimensional texture can also increase the local three-dimensional texture gloss.
[0009] To solve the above technical problems, the technical scheme adopted by the present application is: an injection molding part with local three-dimensional texture, the structure of the injection molding part comprises an injection molding layer and an attachment layer which are pressed together in an injection molding cavity, and an adhesive layer is arranged between the injection molding layer and the attachment layer; the attachment layer comprises a base layer, the base layer has a first surface and a second surface arranged oppositely along the thickness direction of the base layer, the first surface is a display surface, and the second surface is a bonding surface, the bonding surface is sequentially provided with an intermediate coloring layer, a local UV color printing layer or a local UV color printing layer, a first UV texture layer or a UV three-dimensional texture layer, and a bottom coloring layer from inside to outside; and the adhesive layer is arranged between the injection molding layer and the bottom coloring layer.
[0010] With the above structure, the injection molding layer and the attachment layer are combined by pressing in the injection molding cavity, and an adhesive layer is further arranged between the two, so that the two form a whole and are more firmly combined with each other, and are less likely to be warped or separated; in addition, more importantly, the attachment layer of the present application is at least combined with two coloring layers and two UV texture layers, so that the effect of the three-dimensional texture of the local area is improved and strengthened, and the other areas outside the local UV color printing layer or the local UV color printing layer are only the UV texture layer or the UV three-dimensional texture layer, which can be obviously distinguished from the local area and improve the recognition; and the glossiness of the texture display of the local area can be further improved by the superposition of the coloring layers, further improving the recognition and the visual effect of the whole injection molding part.
[0011] Further, a second UV texture layer or a UV three-dimensional texture layer is further arranged on the second surface and located between the second surface and the intermediate coloring layer; with this structure, one layer of texture layer is added, which can be superimposed with the UV texture layer or the UV three-dimensional texture layer, and the superposition of the three-dimensional texture can also be formed on the two surfaces opposite to each other above and below the local UV color printing layer or the local UV color printing layer, so as to further improve the display effect of the three-dimensional texture of the local area, and the superposition of the two UV textures can also be realized in the other areas, improving the display effect of the three-dimensional texture of the whole panel.
[0012] Further, the bottom coloring layer extends along the extension direction of the second surface of the attachment layer and is superimposed with the local UV color printing layer or the local UV color printing layer along the thickness direction; with this structure, the superposition of the coloring layers can be formed on the upper and lower sides of the local UV color printing layer or the local UV color printing layer, so as to further improve the glossiness of the texture of the local area.
[0013] Further, the intermediate color layer is a general color layer or a metal color layer, and the intermediate color layer is a transparent layer; by using this structure, a more ideal gloss with texture can be given, and this setting is below the second UV texture layer or the UV three-dimensional texture layer, the color of the intermediate color layer is superimposed on the second UV texture layer or the UV three-dimensional texture layer, and then the color of the bottom color layer is superimposed on the partial UV color printing layer or the partial UV color printing layer, thereby forming a more ideal gloss.
[0014] Further, the bottom color layer includes at least three layers, and the color layer attached to the surface of the first UV texture layer or the UV three-dimensional texture layer is a mirror oil color layer; by using this structure, the internal texture and color can be effectively protected from scratching; and the mirror oil color layer can further improve the gloss of the local texture of the overall panel.
[0015] Further, the base layer, the second UV texture layer or the UV three-dimensional texture layer, the intermediate color layer, the partial UV color printing layer or the partial UV color printing layer, and the first UV texture layer or the UV three-dimensional texture layer are transparent or translucent layers; by using this scheme, after the above layers are superimposed on each other along the thickness direction, the texture and color can be superimposed and presented without being blocked, so that the final panel presents a more ideal gloss and three-dimensional texture superposition effect.
[0016] Further, the thickness of the base layer is 0.1-0.5mm, by using this thickness, the other layer structures can be supported, so that the panel has a certain thickness and hardness, facilitating subsequent bonding and compounding with products; in addition, more importantly, this size thickness can have sufficient extension and stretching degree after the attached layer is placed in the injection molding cavity, and better adhesion with the injection molding layer.
[0017] Further, the base layer is a base layer made of PC, PET, ABS, PMMA, PP or PETG material; by using these materials, deformation is not easy to occur during injection molding, and stable compounding with other layer structures can be achieved.
[0018] Further, the application also provides an application of an injection molded part with local three-dimensional texture, and the application field includes large and small household appliances, furniture, 3C products or automotive interiors, etc., such as water heaters, washing machines, refrigerators, air conditioners, steam ovens, water dispensers, range hoods, mobile phones, computers or automotive interior surfaces, etc., and is especially suitable for the preparation of injection molded shells of water heaters, washing machines and other functional buttons. BRIEF DESCRIPTION OF DRAWINGS
[0019] Figure 1 is a schematic diagram of the assembly structure of the injection molding part with partial stereoscopic texture of the present application.
[0020] Figure 2 is a schematic diagram of the structure of the injection molding part with partial stereoscopic texture of Figure 1 after assembly of the present application.
[0021] Figure 3 is a schematic diagram of the assembly structure of an attachment layer of an example of the present application.
[0022] Figure 4 is a schematic diagram of the structure of the attachment layer of Figure 3 after assembly of the present application.
[0023] Figure 5 is a schematic diagram of the assembly structure of an attachment layer of another example of the present application.
[0024] Figure 6 is a schematic diagram of the structure of the attachment layer of Figure 5 after assembly of the present application.
[0025] Figure 7 is a schematic diagram of the structure of the attachment layer of the present application after assembly (partial layer filled around).
[0026] Figure 8 is a schematic diagram of the structure of the attachment layer of the present application after high pressure / heat forming.
[0027] Figure 9 is a picture of the stereoscopic texture panel prepared by the present application.
[0028] As shown in the accompanying drawings: S. attachment layer, 1. injection molding layer, 2. adhesive layer, 3. base layer, 301. first surface, 302. second surface, 4. intermediate color layer, 5. partial UV color printing layer or partial UV color printing layer, 6. first UV texture layer or UV stereoscopic texture layer, 7. bottom color layer, 8. second UV texture layer or UV stereoscopic texture layer. DETAILED DESCRIPTION
[0029] The technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the accompanying drawings in the embodiments. Obviously, the described embodiments are only preferred embodiments, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application;
[0030] Furthermore, it is noted that, as used in this specification and the appended claims, the singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise. Thus, for example, reference to "a component" can include a combination of two or more components, and the term "an element" can include comparable reference to a plurality of elements. It will be further noted that the terms "proximal" and "distal" are used herein with reference to a point of origin; for example, a point of origin can be the point at which a component is attached to another component, or the point at which a component is attached to a user. As such, "proximal" and "distal" are not intended to refer to a particular spatial orientation with respect to a user or other component, unless otherwise indicated. As used herein, the terms "vertical," "horizontal," "left," "right," and similar expressions are used for illustrative purposes only. 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 this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this specification and the appended claims, the term "and / or" includes any and all combinations of one or more of the associated listed items.
[0031] As shown in FIGS. 1-8, the injection molding part with partial stereoscopic texture of the present application has a structure comprising an injection molding layer 1 and an attachment layer S that are pressed against each other in an injection molding cavity, and an adhesive layer 2 disposed between the injection molding layer 1 and the attachment layer S. The attachment layer S comprises a base layer 3 having a first surface 301 and a second surface 302 disposed opposite each other along the thickness direction of the base layer 3. The first surface 301 is an exhibition surface, i.e., an outer surface facing the user, and the texture effect of the overall injection molding part can be directly observed. The second surface 302 is a bonding surface, and the bonding surface is sequentially provided with an intermediate coloring layer 4, a partial UV color printing layer or partial UV color printing layer 5, a first UV texture layer or UV stereoscopic texture layer 6, and a bottom coloring layer 7 from the inside to the outside (i.e., from the direction close to the bonding surface to the direction away from the bonding surface). The adhesive layer 2 is located between the injection molding layer 1 and the bottom coloring layer 7. The adhesive layer 2 can be coated on the side surface of the attachment layer that needs to be combined with the injection molding layer using a commercially available adhesive (such as an epoxy resin adhesive), and then high-temperature and high-pressure injection molding is performed in the injection molding cavity. The high-temperature and high-pressure injection molding cavity can ensure that the injection molding layer and the attachment layer are more firmly bonded to each other, thereby providing a guarantee for subsequent use. In addition, it should be noted that, as shown in the drawings, the attachment layer needs to be formed first, and then the attachment layer is subjected to heat pressing or high-pressure forming to form a general structure that matches the profile of the injection molding part to be formed. Then, the excess corners are removed by circular cutting, and the whole is placed in the injection molding cavity to coat the adhesive layer and perform high-temperature and high-pressure injection molding to form the complete injection molding part product structure.
[0032] With the above structure, the injection molding layer and the adhesive layer are combined by pressing in the injection molding cavity, and an adhesive layer is further arranged therebetween, so that the two are formed into a whole and are combined more firmly, and are not prone to warping or separation. In addition, more importantly, the adhesive layer of the application is at least overlaid by two color layers and two UV texture layers, so that the three-dimensional texture effect of the local area is improved and enhanced, and the other areas outside the local UV color printing layer or local UV color printing layer are only simple UV texture layers or UV three-dimensional texture layers, which can be clearly distinguished from the local area and improve the recognition. The gloss of the texture display of the local area can be further improved by the superposition of the color layer, further improving the recognition and the visual effect of the whole injection molding part.
[0033] As shown in FIGS. 1-8, the second surface 302 of the application is also provided with a second UV texture layer or UV three-dimensional texture layer 8, which is located between the second surface 302 and the intermediate color layer 4. With this structure, one layer of texture layer is added, which can be overlaid with the first UV texture layer or UV three-dimensional texture layer, and the three-dimensional texture superposition can also be formed on the two surfaces opposite to the local UV color printing layer or local UV color printing layer, so as to further improve the display effect of the three-dimensional texture of the local area, and the two kinds of UV texture superposition can also be realized in other areas to improve the display effect of the three-dimensional texture of the whole panel.
[0034] As shown in FIGS. 1-8, the bottom color layer 7 of the application extends along the extension direction of the second surface 302 of the adhesive layer S and is overlaid with the local UV color printing layer or local UV color printing layer 5 in the thickness direction. With this structure, the color layer superposition can be formed on the upper and lower sides of the local UV color printing layer or local UV color printing layer, so as to further improve the gloss of the texture of the local area.
[0035] As an example, the intermediate color layer 4 of the application is a common color layer or a metal color layer, and the intermediate color layer is a transparent layer. With this structure, the texture can be given a more ideal gloss, and this setting is below the second UV texture layer or UV three-dimensional texture layer, the color of the intermediate color layer is overlaid with the second UV texture layer or UV three-dimensional texture layer, and then the color of the bottom color layer is overlaid with the local UV color printing layer or local UV color printing layer, so as to form a more ideal gloss.
[0036] As shown in FIGS. 1-8, the bottom color layer 7 described in the present application comprises at least three layers, and the color layer attached to the surface of the first UV texture layer or UV stereo texture layer 6 is a mirror oil color layer; with this structure, the internal texture and color can be effectively protected from scratching; and the mirror oil color layer can further improve the gloss of the local texture of the overall panel.
[0037] As an example, the base layer 3, the second UV texture layer or UV stereo texture layer 4, the intermediate color layer, the local UV color printing layer or local UV color printing layer 5, and the first UV texture layer or UV stereo texture layer 6 described in the present application are all transparent or translucent layers; with this scheme, after the above layers are stacked in the thickness direction, the texture and color can be superimposed and presented without being blocked, so that the final panel presents a more ideal gloss and stereo texture superposition effect.
[0038] As an example, the thickness of the base layer 3 described in the present application is 0.1-0.5mm; with this thickness, the other layer structures can be supported to ensure that the panel has a certain thickness and hardness, facilitating subsequent bonding and compounding with products; in addition, more importantly, this size thickness can have sufficient extension and stretching after being formed into an attached layer in the injection molding cavity, and better fit with the injection layer.
[0039] As an example, the base layer 3 described in the present application is a base layer made of PC, PET, ABS, PMMA, PP or PETG material; with these materials, deformation does not easily occur during injection molding, and stable compounding with other layer structures can be achieved.
[0040] The present application also provides an application of an injection molded part with local stereo texture, which application field includes small and large household appliances, furniture, 3C products or automotive interiors, etc., such as water heaters, washing machines, refrigerators, air conditioners, steam ovens, water dispensers, range hoods, mobile phones, computers or automotive interior surfaces, etc., and is particularly suitable for the preparation of injection molded shells of water heaters, washing machines and other functional buttons.
[0041] The general color layer or metal color layer of the present application uses commercially available color pigments, which are then sprayed or roller coated or screen printed or printed onto the surface of the corresponding structure layer and dried, such as metallic paint and other materials. The mirror oil color layer, such as commercially available mirror oil ink products, can be applied by spraying or squeegee coating or screen printing, etc. With this structure, the internal texture and color can be effectively protected from scratching; and the mirror oil color layer can further improve the gloss of the local texture of the overall panel.
[0042] The UV stereoscopic texture or partial UV stereoscopic texture layer of the present application can be prepared by a 3D multi-channel stereoscopic texture mold process, that is, attaching a UV glue in the mold, then covering an adhesive layer, performing texture imprinting on the UV coating (UV glue) in the mold, then using a UV light source to perform photocuring on the imprinted UV coating, removing the master after curing, obtaining an adhesive layer with master pattern, and removing the excess UV glue on the adhesive layer. For details, please refer to the specific content of "Preparation method of multi-channel 3D nano texture and stereoscopic LOGO mold" or "Preparation method of multi-channel 3D nano texture mold"; the UV layer of the present application can use the above similar process; the thickness of the partial UV stereoscopic texture layer, and the partial UV color printing layer or printing layer, color layer, etc. of the present application can be in micrometer level or nanometer level or millimeter level, which can be adjusted according to the needs of specific products, such as in the range of 10-200 microns thick.
[0043] The partial UV color printing layer or partial UV color printing layer of the present application is printed or printed on the surface of the corresponding structure layer by spraying or blade coating or screen printing, etc. The area of the layer structure of the present application can be equal to the area of the corresponding structure layer above and below, and only the UV color printing or UV color printing pattern is arranged in the local area, or as shown in Figure 8, only in the local area. At this time, the space caused by the other four positions can be filled with subsequent layer structures.
[0044] The partial stereoscopic texture injection molding structure obtained by the present application is obtained by setting the local texture structure and setting the color layer. The product picture is shown in Figure 9. From the real product picture, it can be observed that the injection molding has a significant stereoscopic texture display effect, and the local key function area has a very ideal gloss and metal luster. The surrounding area also has a stereoscopic texture display effect, so as to effectively distinguish the function key area and improve the overall stereoscopic texture finishing display effect of the injection molding.
Claims
1. An injection molded part having a local stereotexture, characterized by: The structure of the injection molding part comprises an injection layer and an adhesive layer formed by pressing each other in an injection cavity, and an adhesive layer is arranged between the injection layer and the adhesive layer; the adhesive layer comprises a base layer, the base layer has a first surface and a second surface arranged oppositely along the thickness direction of the base layer, the first surface is a display surface, and the second surface is a bonding surface, the bonding surface is sequentially provided with an intermediate coloring layer, a partial UV color printing layer or a partial UV color printing layer, a first UV texture layer or a UV three-dimensional texture layer, and a bottom coloring layer from inside to outside; and the adhesive layer is arranged between the injection layer and the bottom coloring layer.
2. The injection molded part with local stereotexture of claim 1, wherein: The second surface is further provided with a second UV texture layer or a UV three-dimensional texture layer, and the second UV texture layer or the UV three-dimensional texture layer is arranged between the second surface and the intermediate coloring layer.
3. The injection molded part having a local stereotexture of claim 1, wherein: The bottom coloring layer extends along the extension direction of the second surface of the adhesive layer and is overlapped with the partial UV color printing layer or the partial UV color printing layer along the thickness direction.
4. The injection molded part having a local stereotexture of claim 1, wherein: The intermediate coloring layer is a common coloring layer or a metal coloring layer, and the intermediate coloring layer is a transparent layer.
5. The injection molded part with local stereotexture of claim 1, wherein: The bottom coloring layer comprises at least three layers, and the coloring layer attached to the surface of the first UV texture layer or the UV three-dimensional texture layer is a mirror oil coloring layer.
6. The injection molded part with local stereotexture of claim 1, wherein: The base layer, the second UV texture layer, the UV three-dimensional texture layer, the intermediate coloring layer, the partial UV color printing layer, the partial UV color printing layer, the first UV texture layer, and the UV three-dimensional texture layer are all transparent layers or translucent layers.
7. The injection molded part with local stereotexture of claim 1, wherein: The thickness of the base layer is 0.1-0.5 mm.
8. The injection molded part with local stereotexture of claim 1, wherein: The base layer is made of PC, PET, ABS, PMMA, PP or PETG material.