Printing process for achieving multi-view scientific and technological texture mirror surface effect on surface of automobile trim panel

Abstract

The invention discloses a printing process for a multi-view science and technology texture mirror surface effect on the surface of an automobile trim panel, which comprises the following steps: selecting a base material and arranging a light pillar texture mold, forming a light pillar texture layer on the lower surface of the base material, and forming a nano micro-texture layer on the upper surface of the base material; carrying out vacuum plating on the base material subjected to light pillar texture compounding, and forming a PVD layer on the light pillar texture layer; patterns and colors are provided, and the PVD layer is covered with a color printing layer, a character pattern layer and / or a character ink layer and a bonding layer through a screen printing machine; a forming mold is arranged, the base material with the upper surface and the lower surface subjected to curing treatment is transferred to the forming mold, high temperature and high pressure are applied to force the base material to deform to an expected shape posture, then the mold is opened, the base material is taken out, a shape cutting mold is arranged, the formed base material is transferred to the shape cutting mold, and the base material is cut into an expected shape size through mold closing force; and an injection mold is arranged, and the printed and formed base material is transferred to the injection mold to be formed.

Description

Technical Field

[0001] The invention relates to the technical field of decorative parts, and in particular to a printing process for a multi-viewing angle technological texture mirror effect on the surface of an automobile decorative panel. Background Art

[0002] At present, with the rapid development of the domestic independent brand new energy vehicle industry, the requirements for automotive interior parts are getting higher and higher, especially for the aesthetic effect of automotive interior parts. The surface of the interior parts is required to present the effect of technological texture technology under multiple viewing angles, and it is also necessary to ensure the visibility of the texture light column on the surface of the panel without backlight, and all display information and buttons are clean and visible when lit.

[0003] However, in the manufacturing process of IML automotive interior parts commonly used in the prior art, the texture layer is directly printed and then injection molded. After multiple steps, the texture and mirror effects on the surface are not good, and the performance of various test requirements is not good. Summary of the invention

[0004] In view of the deficiencies in the prior art, the object of the present invention is to provide a printing process for a multi-viewing technology texture mirror effect on the surface of an automobile trim panel.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions:

[0006] A printing process for a multi-viewing technology texture mirror effect on the surface of an automobile trim panel, characterized by comprising:

[0007] S1, selecting a substrate and setting a light column texture mold, and forming a light column texture layer on the lower surface of the substrate and a nano-micro texture layer on the upper surface of the substrate;

[0008] S2, vacuum plating the substrate on which the light column texture is composited to form a PVD layer on the light column texture layer;

[0009] S3, providing graphics and colors, and covering the PVD layer with a color printing layer, a character graphic layer and / or a character ink layer, and an adhesive layer by a screen printer;

[0010] S4, drying the substrate;

[0011] S5, setting up a molding mold, transferring the substrate after curing on the upper and lower surfaces to the molding mold, and applying high temperature and high pressure to force the substrate to deform into a desired shape and posture, and then opening the mold to take out the substrate,

[0012] S6. Setting a chopping mold, transferring the formed substrate to the chopping mold, and chopping the substrate into a desired shape and size through mold clamping force.

[0013] S7, setting up an injection mold, and transferring the printed and molded substrate to the injection mold for molding.

[0014] Further, in step S1, the substrate is any one of PMMA, ABS, PC, PP or PET, and the light column texture layer is configured as dual-cured UV transparent ink having a textured light column.

[0015] Further, in step S1, the height of the texture light column layer is 8 to 15 μm;

[0016] It is composed of the following substances in parts by mass:

[0017] UV glue 100 copies

[0018] 5 parts of curing agent

[0019] Diluent 10 15 parts.

[0020] Further, in step S2, an ion source coating chamber is set, and the pressure value of the ion source coating chamber when reaching the background vacuum state is 2.0E-1Pa; the ion source cleaning current is set to 1.6A, and the voltage is set to 660V; the vacuum degree during the coating process is set to 1.7E-1Pa; the gas oxygen flow rate is 90sccm; the gas argon flow rate is 520sccm; the film system structure from outside to inside is: Si, Nb2O5, Nb2O5, Nb2O5, Nb2O5.

[0021] Further, in step S3, the color printing layer refers to the color base layer, and the color printing layer is set to a bright reflective material.

[0022] Further, in step S3, a first black ink layer is provided between the upper surface of the character graphic layer and / or the character ink layer and the color printing layer, a second black ink layer is provided on the lower surface of the character graphic layer and / or the character ink layer, and the adhesive layer is provided on the lower surface of the second black ink layer.

[0023] Further, in step S3, the screen mesh number of the color printing layer, the character graphic layer and / or the character ink layer is 250 to 350 meshes, the screen film thickness is 8±2 μm, the scraping glue hardness is 80A, the drying temperature is 80±5°C, the drying speed is 4 m / min, and the drying is carried out in an oven at 80±5°C / 20-30 minutes; the ink thickness is 4-7 μm;

[0024] It is composed of the following substances in parts by mass:

[0025] 100 samples of main ink

[0026] Curing agent 5-10 parts

[0027] Diluent 10 15 parts.

[0028] Furthermore, in step S5, the printed substrate is punched, and the substrate is positioned and fixed in the molding die through the molding holes.

[0029] Compared with the prior art, the present invention has the following advantages and beneficial effects: the present invention forms a nano-micro-texture layer on the upper surface of the substrate through a texture mold, and transfers UV ink to the lower surface of the substrate by embossing, and then forms a light column texture layer by UV curing the substrate, thereby achieving a light column effect, and then further forms an electroplating mirror effect on the light column texture layer by vacuum electroplating to ensure the mirror effect of the substrate, and then further forms a multi-layer color base and character graphics on the PVD layer formed by vacuum electroplating by screen printing, thereby realizing the combination of physical light columns, PVD and screen printing technology, thereby presenting a surface multi-perspective technological texture mirror effect under the background of different colors. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of the present invention;

[0031] Figure 2 This is a flow chart for preparing the light column texture layer of the present invention;

[0032] In the figure: 1, substrate; 2, nano-micro-texture layer; 3, light column texture layer; 4, PVD layer; 5, color printing layer; 6, first black ink layer; 7, character graphic layer; 8, character ink layer; 9, second black ink layer; 10, adhesive layer; 11, light column texture mold; 12, textured surface; 13, pressure roller; 14, dryer; 15, glue injection head; DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] It should be understood that although the terms upper, middle, lower, top, end, etc. appear in this article to describe various elements, these elements are not limited by these terms. These terms are only used to distinguish elements from each other for easy understanding, and are not used to define any direction or order limitation.

[0035] like Figure 1 and Figure 2 As shown, a printing process for a multi-viewing technology texture mirror effect on the surface of an automobile trim panel comprises the following steps:

[0036] S1, select a substrate 1 and set a light column texture mold 11, pre-set the opposite surface for nano-micro grain and UV ink on the mold, form a light column texture layer 3 on the lower surface of the substrate 1 and a nano-micro grain layer 2 on the upper surface of the substrate 1 through mold pressure, then transfer the substrate 1 to a UV machine, and use the UV machine to cure the UV ink on the surface of the substrate 1, so as to obtain a stable light column texture effect;

[0037] S2, vacuum plating the substrate 1 on which the light column texture is composited, to form a PVD layer 4 on the light column texture layer 3, thereby increasing the mirror effect of the light column texture layer 3 and the substrate 1 as a whole;

[0038] S3, providing graphics and colors, and covering the PVD layer 4 with a color printing layer 5, a character graphic layer 7 and / or a character ink layer 8, and an adhesive layer 10 by a screen printer, wherein the color printing layer 5 can be multiple, or different color base layers can be obtained by partitioning or layering on the PVD layer 4, forming characters and a character graphic layer 7 by laser engraving, and then presenting characters and graphics on the surface of the substrate 1 by a colored ink layer, and then continuing to print the adhesive layer 10 on the surface of the substrate 1;

[0039] S4, drying the substrate 1, thus completing the preliminary shaping of the light column texture effect of the substrate 1, and different color printing layers 5 can be set according to actual needs, with a high yield rate.

[0040] In step S4, a drying tunnel and an oven are set up, and the drying tunnel provides a certain transportation distance and transportation space for the substrate 1, with the purpose of improving the drying and curing efficiency of the substrate 1, providing drying time for the previous substrate 1 that has been dried in the oven, and after the subsequent substrate 1 arrives at the oven, the previous substrate 1 completes the drying and curing process in the oven. At the same time, the substrate 1 performs mobile drying in the drying tunnel, thereby improving the drying and curing efficiency, and, through continuous and stable drying, a highly tensile and complete light column texture layer 3 is obtained, and the cracking of the light column texture layer 3 is effectively avoided. At the same time, through the above-mentioned drying tunnel and oven, the stress and defects inside the coating layer are fully eliminated, thereby improving the bonding strength and overall performance.

[0041] After step S4 , steps S5 to S7 are prepared to be performed, the purpose of which is to perform contour and shape shaping on the substrate 1 after the texture effect is formed and cured.

[0042] S5, setting a molding mold, transferring the substrate 1 after curing on the upper and lower surfaces to the molding mold, and applying high temperature and high pressure to force the substrate 1 to deform into a desired shape and posture, and then opening the mold to take out the substrate 1,

[0043] S6. Setting a chopping mold, transferring the formed substrate 1 to the chopping mold, and chopping the substrate 1 into a desired shape and size through a clamping force.

[0044] S7, setting up an injection mold, and transferring the printed and molded substrate 1 to the injection mold for molding.

[0045] Specifically, in step S1, the substrate 1 is any one of PMMA, ABS, PC, PP or PET, and the light column texture layer 3 is configured as a dual-cured UV transparent ink having a textured light column, wherein the UV transparent ink preferably has weather resistance.

[0046] In step S1, a light column texture mold 11 is set, and a texture surface 12 is formed on the cavity surface of the light column texture mold 11 by laser engraving, a glue injection head 15 is set above the light column texture mold 11, UV glue is coated on the texture surface 12 by the glue injection head 15, and then a substrate 1 is set, and a pressure roller 13 is configured to pressurize the back of the substrate 1, and then the UV glue is hardened by a dryer 14 to form a light column texture layer 3 on the surface of the substrate 1.

[0047] In other embodiments, the textured surface 12 can be set on the lower mold of the cavity of the light column texture mold 11, and nano-micro-textures can be set on the cavity surface of its upper mold, so that the preliminary processing of the upper and lower surfaces of the substrate 1 can be completed through one mold closing action.

[0048] In this embodiment, the dual-cured UV transparent ink specifically refers to a UV transparent ink that uses two curing methods to cure the light column texture layer 3. As an example, UV ultraviolet curing and thermal curing are used to significantly accelerate the curing speed of the UV ink and shorten the production cycle. In addition, the dual curing enhances the adhesion between the UV transparent ink and the substrate 1, thereby improving the durability and stability of the final product.

[0049] Specifically, in step S1, the height of the texture light column layer is 8 15 μm;

[0050] It is composed of the following substances in parts by mass:

[0051] UV glue 100 copies

[0052] 5 parts of curing agent

[0053] Diluent 10 15 parts.

[0054] Specifically, in step S2, an ion source coating chamber is set, and the pressure value of the ion source coating chamber when reaching the background vacuum state is 2.0E-1Pa; the ion source cleaning current is set to 1.6A, and the voltage is 660V;

[0055] The vacuum degree during the coating process is set to 1.7E-1Pa; the gas oxygen flow rate is 90sccm; the gas argon flow rate is 520sccm; the above improvements help to remove surface contaminants to increase the adhesion and surface smoothness of the coating. The film structure from the outside to the inside is: Si, Nb2O5, Nb2O5, Nb2O5, Nb2O5.

[0056] Specifically, in step S3, the color printing layer 5 refers to the color base layer, and the color printing layer 5 is set to be a bright reflective material.

[0057] Specifically, in step S3, a first black ink layer 6 is provided between the upper surface of the character graphic layer 7 and / or the character ink layer 8 and the color printing layer 5, a second black ink layer 9 is provided on the lower surface of the character graphic layer 7 and / or the character ink layer 8, and the adhesive layer 10 is arranged on the lower surface of the second black ink layer 9.

[0058] Specifically, in step S3, the screen mesh number of the color printing layer 5, the character graphic layer 7 and / or the character ink layer 8 is 250 to 350 meshes, the screen film thickness is 8±2 μm, the scraping glue hardness is 80A, the drying temperature is 80±5°C, the drying speed is 4 m / min, and the drying is carried out in an oven at 80±5°C / 20-30 minutes; the ink thickness is 4-7 μm;

[0059] It is composed of the following substances in parts by mass:

[0060] 100 samples of main ink

[0061] Curing agent 5-10 parts

[0062] Diluent 10 15 parts.

[0063] Specifically, in step S5, the printed substrate 1 is punched, and the substrate 1 is positioned and fixed in the molding mold through the molding holes. The punched substrate 1 can be positioned more accurately in the molding mold to ensure that each injection molding can obtain an automotive interior trim with accurate shape and correct position, thereby avoiding molding errors caused by material movement or deformation, improving the overall quality of the product, and making the bond between the substrate 1 and the injection molding material tighter, reducing cracks or falling off caused by loose bonding, thereby enhancing the durability of the product.

[0064] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A printing process for a multi-view technology texture mirror effect on the surface of an automobile trim panel, characterized in that: include: S1, selecting a substrate (1) and setting a light column texture mold (11), and forming a light column texture layer (3) on the lower surface of the substrate (1), and forming a nano-micro texture layer (2) on the upper surface of the substrate (1); S2, vacuum plating the substrate (1) on which the light column texture is composited, to form a PVD layer (4) on the light column texture layer (3); S3, providing graphics and colors, and covering the PVD layer (4) with a color printing layer (5), a character graphics layer (7) and / or a character ink layer (8), and an adhesive layer (10) by a screen printing machine; S4, drying the substrate (1); S5, setting a molding mold, transferring the substrate (1) after curing on the upper and lower surfaces to the molding mold, applying high temperature and high pressure to force the substrate (1) to deform into a desired shape, and then opening the mold to take out the substrate (1), S6. Setting a chopping mold, transferring the formed substrate (1) to the chopping mold, and chopping the substrate (1) into a desired shape and size by using a clamping force. S7, setting up an injection mold, and transferring the printed and molded substrate (1) to the injection mold for molding.

2. The printing process for a multi-view technology texture mirror effect on the surface of an automobile trim panel according to claim 1, characterized in that: In step S1, the substrate (1) is any one of PMMA, ABS, PC, PP or PET, and the light column texture layer (3) is configured as dual-cured UV transparent ink having a textured light column.

3. The printing process for a multi-viewing technology texture mirror effect on the surface of an automobile trim panel according to claim 1, characterized in that: In step S1, the height of the texture light column layer is 8 to 15 μm; It is composed of the following substances in parts by mass: UV glue 100 copies 5 parts of curing agent Diluent 10 15 parts.

4. The printing process for a multi-view technology texture mirror effect on the surface of an automobile trim panel according to claim 1, characterized in that: In step S2, an ion source coating chamber is set, and the pressure value of the ion source coating chamber when reaching a background vacuum state is 2.0E-1Pa; the ion source cleaning current is set to 1.6A and the voltage is 660V; The vacuum degree during the coating process was set to 1.7E-1Pa; the gas oxygen flow rate was 90sccm; the gas argon flow rate was 520sccm; the film structure from outside to inside was: Si, Nb2O5, Nb2O5, Nb2O5, Nb2O5.

5. The printing process for a multi-viewing technology texture mirror effect on the surface of an automobile trim panel according to claim 1, characterized in that: In step S3, the color printing layer (5) refers to the color base layer, and the color printing layer (5) is set to be a bright reflective material.

6. The printing process for a multi-view technology texture mirror effect on the surface of an automobile trim panel according to claim 1, characterized in that: In step S3, a first black ink layer (6) is provided between the upper surface of the character graphic layer (7) and / or the character ink layer (8) and the color printing layer (5), a second black ink layer (9) is provided on the lower surface of the character graphic layer (7) and / or the character ink layer (8), and the adhesive layer (10) is provided on the lower surface of the second black ink layer (9).

7. The printing process for a multi-viewing technology texture mirror effect on the surface of an automobile trim panel according to claim 1, characterized in that: In step S3, the screen mesh number of the color printing layer (5), the character graphic layer (7) and / or the character ink layer (8) is 250 to 350 meshes, the screen film thickness is 8±2 μm, the scraping glue hardness is 80A, the drying temperature is 80±5°C, the drying speed is 4 m / min, and the drying is carried out in an oven at 80±5°C / 20 to 30 minutes; the ink thickness is 4 to 7 μm; It is composed of the following substances in parts by mass: 100 samples of main ink Curing agent 5-10 parts Diluent 10 15 parts.

8. The printing process for a multi-view technology texture mirror effect on the surface of an automobile trim panel according to claim 1, characterized in that: In step S5, the printed substrate (1) is punched, and the substrate (1) is positioned and fixed in the molding die through the molding holes.

9. The printing process for a multi-viewing technology texture mirror effect on the surface of an automobile trim panel according to claim 1, characterized in that: In step S1, a light column texture mold (11) is provided, and a textured surface (12) is formed on the cavity surface of the light column texture mold (11) by laser engraving, and after UV glue is coated on the textured surface (12), a substrate (1) is provided, and a pressure roller (13) is arranged to apply pressure on the back of the substrate (1), and then the UV glue is hardened by drying to form a light column texture layer (3) on the surface of the substrate (1).

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