CN220639165U

CN220639165U - INS automobile decorative membrane with holographic texture

Info

Publication number: CN220639165U
Application number: CN202322088216.5U
Authority: CN
Inventors: 叶永健; 黄燕燕; 梁德文; 周海滨
Original assignee: Shenzhen Shenda Aurora Technology Co ltd
Current assignee: Shenzhen Shenda Aurora Technology Co ltd
Priority date: 2023-08-04
Filing date: 2023-08-04
Publication date: 2024-03-22
Anticipated expiration: 2033-08-04

Abstract

The utility model provides an INS automobile decorative membrane with holographic textures, which comprises a PC/PMMA alloy substrate layer, a UV mould pressing texture layer, a metal coating, an adhesive layer and an ABS substrate layer which are sequentially laminated from top to bottom, and is characterized in that: the UV mould pressing texture layer comprises a first holographic texture area and a second deplating texture area, the first holographic texture area of the UV mould pressing texture layer is completely covered by the metal coating, and the second deplating texture area is partially covered by the metal coating. The INS automobile decorative membrane with the holographic texture is simple in structure, reasonable in design and provides a richer decorative effect through UV mould pressing of the holographic texture; the display lamp or atmosphere lamp backlight effect is achieved by utilizing the mould pressing texture structure to hollowed out the coating area, and the defect that the conventional INS membrane needs to be added with a plurality of shading layers and light-transmitting layers, so that interlayer adhesion is poor and the light-transmitting effect is uneven due to thermoforming stretching is avoided.

Description

INS automobile decorative membrane with holographic texture

Technical Field

The utility model relates to the technical field of automobile decorative films, in particular to an INS automobile decorative film with holographic textures.

Background

With the continuous development of the world automobile industry, people also put forward higher and higher requirements on the aspects of automobile visual experience and touch feeling, the aesthetic appearance and the comfort level of the space in the automobile are also key factors for automobile purchasing, and the automobile interior decoration has the effects of light transmission and the like to improve the grade of the whole interior decoration atmosphere. Traditional automotive interior trim decoration technologies including screen printing, thermal transfer printing, pad printing, vacuum plating, paint spraying and the like cannot meet the national environmental regulations and the use demands of consumers.

In-mold Insert (INS) technology has gradually become a new generation of production technology to replace traditional plastic decorations in the production of automotive upholstery. The INS technology is to form the surface profile of a product in advance through high-pressure adsorption in a forming die, then cut and fix redundant corners in a die cavity for injection molding, and then obtain the part product formed by integrally forming the plastic part and the decorative membrane. The technology has the advantages that secondary processing procedures of parts are eliminated, the production efficiency is improved, and meanwhile, the product produced by the technology has the characteristics of high definition, good third dimension, scratch resistance on the surface, various design modeling patterns, attractive appearance of the product and the like, and the exquisite perception degree and the added value of the whole vehicle are improved.

However, the existing INS technology has the problems that the forming depth of the membrane is not deep enough, the membrane is easy to break and fall off, the injection molding product is easy to warp, and the like, so that the performance of the INS product is difficult to control. Meanwhile, along with the pursuit of the interior decoration of the automobile for technological decoration, decoration parts for increasing the backlight effect of holographic decorative patterns and indicator lamps or atmosphere lamps are also increasingly popular with consumers.

On the basis, in order to improve the production quality and efficiency of automotive interior products, the characteristics of high deep drawability, high interlayer adhesion, holographic decorative patterns, backlight effect of an indicator lamp or an atmosphere lamp and the like required by INS process films are improved, and the problems to be solved are urgently needed at present.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides the INS automobile decorative membrane with holographic textures, which can meet the requirements of high deep drawability, holographic decorative patterns and backlight of an indicator lamp or an atmosphere lamp of the INS technical membrane.

The utility model provides an INS automobile decorative membrane with holographic textures, which comprises a PC/PMMA alloy substrate layer, a UV mould pressing texture layer, a metal coating, an adhesive layer and an ABS substrate layer which are sequentially laminated from top to bottom, and is characterized in that: the UV mould pressing texture layer comprises a first holographic texture area and a second deplating texture area, the first holographic texture area of the UV mould pressing texture layer is completely covered by the metal coating, and the second deplating texture area is partially covered by the metal coating.

Preferably, the thickness of the PC/PMMA alloy substrate layer is 25-175 mu m, wherein the printing surface can be subjected to chemical treatment to improve the adhesive force, and the outer surface of the PC/PMMA alloy substrate layer is coated with a functional coating for increasing hardening, touch feeling, bacteria resistance, weather resistance and the like.

Preferably, the UV molding texture layer is ultraviolet light cured acrylic resin, and the texture structure on the metal master plate is transferred onto the substrate by adopting UV coating molding equipment to form the UV molding texture layer, so that the interlayer adhesive force is improved.

Preferably, the first holographic texture region included in the UV embossed texture layer provides a holographic decorative pattern effect, the morphology and size of the embossed texture structure of which is determined by the desired optical effect, and may be any microstructure including, but not limited to, the following features: one or more continuous curved structures, one or more rectangular structures, one or more sawtooth prisms, or a splice or combination thereof; the continuous curved surface type structure can be one or more of a micro lens structure, a sine type structure, an elliptic type structure, a hyperbolic type structure, a parabolic type structure and the like, and the specific arrangement mode of the structures can be periodic, local periodic, aperiodic, random or a combination of the structures. The first holographic texture region preferably has a texture depth in the range of 0.06 to 0.8 μm and a width in the range of 0.1 to 30 μm, and further preferably has a structural aspect ratio of less than 0.1.

Preferably, the second deplating texture region included in the UV embossing texture layer provides a fine deplating effect, and the embossing texture structure can be one of square wave type grating structure, zigzag type grating structure, trapezoid type grating structure, cosine type grating structure, pyramid type structure or their combination; the depth of the texture of the second deplating texture region is preferably in the range of 0.5 μm to 3 μm, the width period may be in the range of 1 μm to 10 μm, and further, the aspect ratio of the texture of the second deplating texture region is preferably greater than 0.3.

Preferably, the UV embossed textured layer comprises a first holographic textured region and a second deplating textured region having the following distribution: in the distribution of the first holographic texture area structure, a dot matrix type second deplating texture area structure with the diameter of micron is arranged in a random or certain regular mode; the structural size of the lattice type second deplating texture areas is in the range of 5-20 mu m, and the two adjacent second deplating texture areas are distributed at intervals of more than 50 mu m to occupy the ratio of not more than 10% of the total area of the first holographic texture areas. The second deplating texture areas have small structural areas and numerous, and can not be distinguished by naked eyes without affecting the holographic optical effect of the first holographic texture areas.

Preferably, the metal coating can be a single-layer coating or a multi-layer coating, and comprises metals such as aluminum, copper, indium, tin, zinc and the like or mixtures and alloys thereof; the process can also comprise vacuum evaporation, electron beam evaporation, magnetron sputtering, vapor deposition and the like; the thickness of the coating is preferably 10 to 100nm. Based on the preferred different structural morphologies of the first holographic texture region and the second deplating texture region of the UV mould pressing texture layer, the plating thickness of the second deplating texture region per unit area is obviously smaller than that of the first holographic texture region after the plating process is carried out simultaneously. Under the proper deplating environment, the coating covered on the second deplating texture area is completely removed, and the coating covered on the first holographic texture area is still completely covered. In addition, the transmittance of the coating after the hollow area is 30-70% under natural light. Therefore, due to the distribution, the coating hollowed-out formed on the UV mould pressing texture layer forms the reflection light difference between the first holographic texture area and the second coating texture area of the holographic structure layer which cannot be observed by naked eyes under natural light conditions, and allows most of transmitted light to pass through, namely, the surface holographic decorative pattern is formed, and the effect of backlight of the indicator lamp or the atmosphere lamp is not influenced.

Preferably, the adhesive layer can be polyurethane, acrylic, polyester or vinyl chloride, and can be firmly combined with the plating layer, the UV molding layer and the ABS substrate layer by adopting a photo-curing or thermosetting system. The thickness of the adhesive layer is 1-5 μm.

Preferably, the thickness of the ABS substrate layer is 50-1000 mu m, and the ABS substrate is a substrate which has good compatibility with injection molding parts and has a heat shrinkage rate close to that of the injection molding parts.

The INS automobile decorative membrane with holographic textures provided by the utility model has the beneficial effects that: the INS automobile decorative membrane with the holographic texture is simple in structure, reasonable in design and provides a richer decorative effect through UV mould pressing of the holographic texture; the backlight effect of the indicator lamp or the atmosphere lamp is achieved by hollowing out the coating area through the mould pressing texture structure, and the defects that the interlayer adhesive force is poor and the light transmission effect is uneven due to thermoforming stretching due to the fact that a plurality of shading layers and light transmission layers are needed to be added to a conventional INS membrane are avoided; in addition, the metal coating has good temperature resistance and extensibility, and the addition of the bonding layer and the ABS substrate layer has heat insulation and buffering effects on the UV compression texture layer in the thermoforming and injection molding processes, so that the formability and the high stretchability of the product are improved.

Drawings

Fig. 1 is a schematic view of the layered structure of the present utility model.

In the figure: 1. a PC/PMMA alloy substrate layer; 2. UV molding the texture layer; 3. a metal plating layer; 4. an adhesive layer; 5. an ABS substrate layer.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments obtained by those skilled in the art without making any inventive effort are within the scope of the present utility model.

Examples: an INS automobile decorative membrane with holographic textures.

As shown in fig. 1, an INS automobile decorative film with holographic texture comprises a PC/PMMA alloy substrate layer 1, a UV compression texture layer 2, a metal plating layer 3, an adhesive layer 4 and an ABS substrate layer 5 which are laminated in sequence from top to bottom.

The PC/PMMA alloy substrate layer 1 is 125 mu m in thickness and is prepared by coextrusion and compounding of PC and PMMA, high impact strength, bending resistance and good hardness and wear resistance of the PC material are combined, the overall toughness of the diaphragm material is improved, the diaphragm material is suitable for the technological requirements of an automobile INS, the printing surface of the PC/PMMA alloy substrate layer 1 can be subjected to chemical treatment to improve the adhesive force, and the outer surface of the PC/PMMA alloy substrate layer 1 is coated with a functional coating for increasing hardening, touch feeling, bacteria resistance, weather resistance and the like.

The UV mould pressing texture layer 2 is formed by transferring the texture structure on the metal master plate onto a substrate by adopting UV coating mould pressing equipment, and the thickness of the UV mould pressing texture layer is 5 mu m by adopting a special photo-curing modified acrylic resin of a commercial INS process. Wherein the distribution of the first holographic textured area and the second deplating textured area structures is: the second deplating texture areas are dot matrixes with the size of 10 mu m, and two adjacent second deplating texture areas are spaced by 50 mu m and distributed in the first holographic texture areas in a random mode. The first holographic texture area structure is determined by the required optical effect, can be a single structure or a combination of a plurality of structures, has the structure depth within the range of 0.1-0.5 mu m and the period within the range of 10-20 mu m, and has the depth-to-width ratio of the whole structure smaller than 0.1. The second deplating texture area structure adopts a zigzag grating structure, the structure depth is 1.5 μm, and the period is 5 μm.

The metal coating 3 is made of indium tin alloy by magnetron sputtering, the thickness is controlled to be 30nm, and enough metal brightness and light shielding performance are provided. Under the proper deplating environment, the coating covered on the first holographic texture area is completely removed, and the coating covered on the second deplating texture area is still completely covered. The transmittance of the coating after the hollow area is 40-60% under natural light.

The adhesive layer 4 is made of acrylic resin of a UV curing system, and is compounded with the ABS base material layer 5 after being printed by an anilox roller, and the ABS base material layer 5 is a transparent film coiled material with the thickness of 250 mu m.

The INS automobile decorative membrane with holographic textures is prepared according to the following method

(1) Coating the printing surface of the PC/PMMA alloy substrate layer 1 by using an anilox roller, and performing UV curing while performing die pressing by using a metal master plate with holographic textures to form a UV die pressing texture layer 2;

(2) Forming a zoned metal coating 3 on the UV mould pressing texture layer 2 by adopting magnetron sputtering to coat indium tin alloy under a proper coating removing environment;

(3) Printing an adhesive layer on the surface of the metal coating 3, and compositing the adhesive layer with the ABS base material layer 5;

(4) And rolling the finished product, and die-cutting the finished product into sheets.

The INS automobile decorative membrane with the holographic texture provides a richer decorative effect through UV mould pressing of the holographic texture; the backlight effect of the indicator lamp or the atmosphere lamp is achieved by hollowing out the coating area through the mould pressing texture structure, and the defects that the interlayer adhesive force is poor and the light transmission effect is uneven due to thermoforming stretching due to the fact that a plurality of shading layers and light transmission layers are needed to be added to a conventional INS membrane are avoided; in addition, the metal coating has good temperature resistance and extensibility, and the addition of the bonding layer and the ABS substrate layer has heat insulation and buffering effects on the UV compression texture layer in the thermoforming and injection molding processes, so that the formability and the high stretchability of the product are improved.

The INS automobile decorative membrane with holographic textures can be applied to door panels, instruments, center consoles and the like of automobiles, backlight decorative parts are required to be provided, the INS automobile decorative membrane with holographic decorative effect indicator lamps or atmosphere lamps have the backlight effect, the overall decorative effect is rich and personalized, and the aesthetic requirements of consumers are met.

The foregoing is a preferred embodiment of the present utility model, but the present utility model should not be limited to the embodiment and the disclosure of the drawings, so that the equivalents and modifications can be made without departing from the spirit of the disclosure.

Claims

1. The utility model provides an INS car decorative film piece with holographic texture, includes from last PC/PMMA alloy substrate layer, UV mould pressing texture layer, metal coating, adhesive linkage and the ABS substrate layer that sets gradually down, its characterized in that: the UV mould pressing texture layer comprises a first holographic texture area and a second deplating texture area, the first holographic texture area of the UV mould pressing texture layer is completely covered by the metal coating, and the second deplating texture area is partially covered by the metal coating.

2. The INS automobile decorative film with holographic texture of claim 1, wherein: the thickness of the PC/PMMA alloy substrate layer is 25-175 mu m, and the outer surface of the PC/PMMA alloy substrate layer is coated with a functional coating.

3. The INS automobile decorative film with holographic texture of claim 1, wherein: the UV mould pressing texture layer is ultraviolet light solidified acrylic resin, and the texture structure on the metal master plate is transferred onto the base material by adopting UV coating mould pressing equipment to form the UV mould pressing texture layer.

4. The INS automobile decorative film with holographic texture of claim 1, wherein: the first holographic texture region of the UV embossed texture layer comprises any microstructure of the following features: one or more continuous curved structures, one or more rectangular structures, one or more sawtooth prisms, or a splice or combination thereof.

5. The INS automobile decorative film with holographic texture as in claim 4, wherein: the continuous curved surface type structure is one or a plurality of structures selected from a micro lens structure, a sine type structure, an elliptic type structure, a hyperboloid type structure and a paraboloid type structure, which are spliced or combined.

6. The INS automobile decorative film with holographic texture of claim 1, wherein: the depth of the texture structure of the first holographic texture area is 0.06-0.8 mu m, and the width of the texture structure of the first holographic texture area is 0.1-30 mu m.

7. The INS automobile decorative film with holographic texture of claim 1, wherein: the embossing texture structure of the second deplating texture area of the UV embossing texture layer is one of a square wave type grating structure, a zigzag grating structure, a trapezoid grating structure, a cosine grating structure and a pyramid structure or a combination thereof.

8. The INS automobile decorative film with holographic texture of claim 7, wherein: the depth of the texture structure of the second deplating texture area is 0.5-3 mu m, and the width is 1-10 mu m.

9. The INS automobile decorative film having holographic texture of claim 1, wherein the UV embossed texture layer comprises first holographic textured regions and second deplated textured regions having the following distribution: and in the distribution of the first holographic texture area structure, a lattice type second deplating texture area structure with the diameter of micron is arranged, wherein the size of the lattice type second deplating texture area structure is in the range of 5-20 mu m, and the interval between two adjacent second deplating texture areas exceeds 50 mu m so as to be distributed with the ratio of not more than 10% of the total area of the first holographic texture area.

10. The INS automobile decorative film with holographic texture of claim 1, wherein: the thickness of the ABS substrate layer is 50-1000 mu m.