INS diaphragm with vacuum coating effect and preparation method of INS diaphragm

Abstract

The invention discloses an INS diaphragm with a vacuum coating effect and a preparation method thereof.The INS diaphragm with the vacuum coating effect comprises a base material layer (1), a bonding layer, a decoration layer and a base material layer (4), the base material layer (1) comprises an ABS layer, the decoration layer comprises UV glue A, UV glue B, a PVD hollow electroplating layer and an ink ink layer, and the base material layer (4) comprises a PMMA layer and a PC layer. Most of existing INS diaphragms have the problems of complex process, poor film adhesion, easy blistering and the like in the preparation process, the INS diaphragm with the vacuum coating effect can be suitable for being used in the automobile industry, has the characteristics of high stretching, capability of coating the surface of a complex, distorted, large and highly-bent product and the like, and meanwhile, the product is exquisite in appearance and high in practicability. According to the preparation method of the diaphragm, through the scheme that the acrylic resin with high tensile strength and the acrylic resin with high hardness are used in a mixed mode, the problems that a large-size INS diaphragm is prone to cracks, fractures and the like are solved.

Description

Technical Field

[0001] The invention relates to the technical field of functional films, in particular to a vacuum coating effect INS film and a preparation method thereof. Background Art

[0002] INS film (In-mold decoration Film) is a new type of material that combines pattern design with functional coating. It can integrate complex patterns, textures and functional coatings into the surface of plastic products during the molding process. However, most of the existing INS films have problems such as complex process, poor film adhesion, and easy blistering during the preparation process. In addition, when traditional vacuum coating technology is applied to INS films, it is often difficult to take into account the uniformity of the film layer and the flexibility of the film, resulting in poor results in practical applications. At present, domestic automotive INS decorative films mainly use imported films, mainly European and Japanese products. Most domestic manufacturers are in the research and development verification stage and are only tried on a small scale. They also have a single appearance, insufficient effects, and poor texture. Therefore, the market is in urgent need of developing a new vacuum coating effect INS film and its preparation method to further promote technological progress in related industries.

[0003] After searching, it is found that INS film and its preparation method [Application No.: 202311399177.9, Publication No.: CN117341313A] include a weather-resistant layer, a pattern layer, an adhesive layer and a substrate layer. The raw materials for preparing the weather-resistant layer include PMMA and cage-type polysilsesquioxane. Although this INS film has certain effects, the pattern is very single and its own characteristics cannot be used in the automotive field. Summary of the invention

[0004] In view of the problems existing in the prior art, the object of the present invention is to provide a vacuum coating effect INS membrane and a preparation method thereof.

[0005] The present invention can be achieved through the following technical solutions:

[0006] A vacuum coating effect INS diaphragm and a preparation method thereof, characterized in that:

[0007] The vacuum coating effect INS film comprises a substrate layer (1), an adhesive layer, a decorative layer and a substrate layer (4), wherein the substrate layer (1) comprises an ABS layer, the decorative layer comprises UV glue A, UV glue B, PVD hollow electroplating and an ink layer, and the substrate layer (4) comprises a PMMA layer and a PC layer.

[0008] The method for preparing the vacuum coating effect INS film is as follows:

[0009] Step 1: preparing a substrate layer (4);

[0010] Step 2: evenly coating a layer of UV glue A on the PC surface of the substrate layer (4) to obtain a film sheet 1;

[0011] Step 3: Expose and cure the side of the film 1 coated with UV glue A, and then place a mask plate with a textured pattern between the light source and the film 1. The mask plate will block part of the light, and the UV glue A that is not exposed to the light will not cure. After the exposure is completed, use a solvent to clean the uncured UV glue A to obtain the film 2;

[0012] Step 4: Apply UV glue B on the side of the film 2 coated with UV glue A, and then expose and cure it to obtain film 3;

[0013] Step 5: Performing a PVD vacuum coating process on the adhesive layer of the diaphragm 3 to obtain the diaphragm 4;

[0014] Step 6: Print ink on the coating surface of the diaphragm 4 to obtain the diaphragm 5;

[0015] Step 7: coating a layer of laminating adhesive on the ink-printed surface of the film sheet 5, coating a layer of laminating adhesive on one side of the substrate layer (1), laminating the adhesive-coated surface of the film sheet 5 with the adhesive-coated surface of the substrate layer (1), and obtaining the film sheet 6;

[0016] Step 8: Heat the membrane 6 and roll it. After processing, let it stand at room temperature for 7 to 14 days to mature the material to obtain a vacuum coating effect INS membrane.

[0017] Preferably, the UV glue A is an acrylic resin having high elongation properties.

[0018] Through the above technical scheme, the high-stretching characteristics of acrylic resin can be fully utilized, such as good toughness and good adhesion to PC substrate, which can meet the requirements of high-stretching of INS diaphragm and can be coated on the surface of complex twisted and high-bending products.

[0019] Preferably, the UV glue B is an acrylic resin having high hardness characteristics.

[0020] Through the above technical solution, the high hardness characteristics of acrylic resin can be utilized to enable it to withstand the bombardment of ion sources in PVD vacuum coating without producing obvious cracks, thereby ensuring that there is no obvious cracking on the product surface.

[0021] Preferably, the mask plate is a photoresist plate with a CR layer.

[0022] Through the above technical solution, photoresist plates with various patterns can be customized. The photoresist plate with a CR layer can achieve very fine pattern transfer, and at the same time has strong tolerance to changes in temperature and humidity, and can also resist corrosion from various chemical reagents. After the pattern transfer is completed, the photoresist can be removed relatively easily without causing pollution or damage to the substrate material. It can be reused, reducing production costs.

[0023] Preferably, the pattern unit width on the mask plate is 3um-10um, the width in the long direction is 18um-25um, and the period is 20um-50um.

[0024] Through the above technical solution, patterns of various sizes can be customized.

[0025] Preferably, color paste can be added to UV glue A and UV glue B for color adjustment.

[0026] Through the above technical solution, the color of UV glue A and UV glue B can be adjusted to achieve the effect of gorgeous patterns.

[0027] Preferably, the PVD vacuum coating process can use film materials with different refractive indices for stacking.

[0028] Through the above technical solution, different reflected light or gradient color effects can be achieved.

[0029] Preferably, the ink printing process adopts a screen printing process, a pad printing process or a flexographic printing process.

[0030] Through the above technical solutions, the needs of ink printing can be met through a variety of ways, freeing from technical limitations, and the appropriate ink printing process can be selected according to actual needs.

[0031] Preferably, the bonding adhesive used in the bonding process is a two-component acrylic resin. After the bonding adhesive is applied, the solvent needs to be slowly evaporated at 30°C-40°C. When the viscosity of the bonding adhesive layer increases, the bonding surface of the membrane five is bonded to the bonding surface of the substrate layer (1).

[0032] Through the above technical solution, the stability of the adhesion between the membrane sheet 5 and the substrate layer (1) can be ensured.

[0033] Preferably, the heating and rolling step is carried out in a specific embodiment at 80° C.-100° C. with double rollers applying a rolling pressure of 20 kg-40 kg.

[0034] Through the above technical solution, the effect of eliminating bubbles can be guaranteed, and the problem of insufficient adhesion and separation between the substrate and the film decorative layer can be solved.

[0035] Compared with the prior art, the present invention has the following advantages:

[0036] 1. The vacuum coating effect INS diaphragm provides an INS diaphragm suitable for use in the automotive industry. It has the characteristics of high tensile strength and can be coated on the surface of complex twisted and high-bending products. At the same time, the product has a beautiful appearance and rich performance effects.

[0037] 2. The vacuum coating effect INS diaphragm preparation method solves the problems of cracks and breakages of large-sized INS diaphragms by mixing high-strength acrylic resin with high-hardness acrylic resin.

[0038] 3. The vacuum coating effect INS diaphragm preparation method has the characteristics of streamlined production process and high compatibility of production processes, which greatly reduces production costs while improving productivity. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a schematic diagram of the composition of the present invention.

[0040] Figure 2 It is a schematic diagram of the process flow of this invention. DETAILED DESCRIPTION

[0041] A vacuum coating effect INS diaphragm and a preparation method thereof, characterized in that:

[0042] The vacuum coating effect INS film comprises a substrate layer (1), an adhesive layer, a decorative layer and a substrate layer (4), wherein the substrate layer (1) comprises an ABS layer, the decorative layer comprises UV glue A, UV glue B, PVD hollow electroplating and an ink layer, and the substrate layer (4) comprises a PMMA layer and a PC layer.

[0043] The method for preparing the vacuum coating effect INS film is as follows:

[0044] Step 1: preparing a substrate layer (4);

[0045] Step 2: evenly coating a layer of UV glue A on the PC surface of the substrate layer (4) to obtain a film sheet 1;

[0046] Step 3: Expose and cure the side of the film 1 coated with UV glue A, and then set a mask with a texture pattern between the light source and the film 1. The pattern unit width on the mask is 5um, the long direction is 22um, and the period is 25um. The mask will block part of the light, and the UV glue A that is not exposed to the light will not cure. After the exposure, use a mixed solvent of alcohol and acetone to clean the uncured UV glue A to obtain the film 2;

[0047] Step 4: Apply UV glue B on the side of the film 2 coated with UV glue A, and then expose and cure it to obtain film 3;

[0048] Step 5: Perform PVD vacuum coating process on the adhesive layer of the diaphragm 3, and select SiO2-Ti3O5 laminated film as the film material to obtain the diaphragm 4;

[0049] Step 6: Print ink on the coating surface of the diaphragm 4, and the ink printing process adopts a screen printing process to obtain the diaphragm 5;

[0050] Step 7: Apply a layer of laminating adhesive on the ink-printed surface of the film sheet 5, apply a layer of laminating adhesive on one side of the substrate layer (1), and perform a laminating process on the laminating surface of the film sheet 5 and the laminating surface of the substrate layer (1). After the laminating adhesive is applied, the solvent needs to be slowly evaporated at 30°C-40°C. When the viscosity of the laminating adhesive layer increases, the laminating surface of the film sheet 5 and the laminating surface of the substrate layer (1) are laminated to obtain the film sheet 6;

[0051] Step 8: Heat the film 6 and roll it. At 80℃-100℃, double rollers apply 20kg-40kg rolling pressure. After processing, let it stand at room temperature for 7-14 days to mature the material to obtain a vacuum coating effect INS film.

[0052] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0053] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0054] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A vacuum coating effect INS membrane and a preparation method thereof, characterized in that: The vacuum coating effect INS film comprises a substrate layer (1), an adhesive layer, a decorative layer and a substrate layer (4), wherein the substrate layer (1) comprises an ABS layer, the decorative layer comprises UV glue A, UV glue B, PVD hollow electroplating and an ink layer, and the substrate layer (4) comprises a PMMA layer and a PC layer. The method for preparing the vacuum coating effect INS film is as follows: Step 1: preparing a substrate layer (4); Step 2: evenly coating a layer of UV glue A on the PC surface of the substrate layer (4) to obtain a film sheet 1; Step 3: Expose and cure the side of the film 1 coated with UV glue A, and then place a mask plate with a textured pattern between the light source and the film 1. The mask plate will block part of the light, and the UV glue A that is not exposed to the light will not cure. After the exposure is completed, use a solvent to clean the uncured UV glue A to obtain the film 2; Step 4: Apply UV glue B on the side of the film 2 coated with UV glue A, and then expose and cure it to obtain film 3; Step 5: Performing a PVD vacuum coating process on the adhesive layer of the diaphragm 3 to obtain the diaphragm 4; Step 6: Print ink on the coating surface of the diaphragm 4 to obtain the diaphragm 5; Step 7: coating a layer of laminating adhesive on the ink-printed surface of the film sheet 5, coating a layer of laminating adhesive on one side of the substrate layer (1), laminating the adhesive-coated surface of the film sheet 5 with the adhesive-coated surface of the substrate layer (1), and obtaining the film sheet 6; Step 8: Heat the membrane 6 and roll it. After processing, let it stand at room temperature for 7 to 14 days to mature the material to obtain a vacuum coating effect INS membrane.

2. A vacuum coating effect INS membrane and a preparation method thereof according to claim 1, characterized in that: The UV glue A is an acrylic resin with high tensile properties.

3. A vacuum coating effect INS membrane and a preparation method thereof according to claim 1, characterized in that: The UV glue B is an acrylic resin with high hardness.

4. A vacuum coating effect INS membrane and a preparation method thereof according to claim 1, characterized in that: The mask plate is a photoresist plate with a CR layer.

5. A vacuum coating effect INS membrane and a preparation method thereof according to claim 1, characterized in that: The pattern unit width on the mask plate is 3um-10um, the width in the long direction is 18um-25um, and the period is 20um-50um.

6. A vacuum coating effect INS membrane and a preparation method thereof according to claim 1, characterized in that: Color paste can be added to the UV glue A and UV glue B for color adjustment.

7. A vacuum coating effect INS membrane and a preparation method thereof according to claim 1, characterized in that: The PVD vacuum coating process can use film materials with different refractive indices for stacking.

8. A vacuum coating effect INS membrane and a preparation method thereof according to claim 1, characterized in that: The ink printing process adopts a screen printing process, a pad printing process or a flexographic printing process.

9. A vacuum coating effect INS membrane and a preparation method thereof according to claim 1, characterized in that: The bonding adhesive used in the bonding process is a two-component acrylic resin. After the bonding adhesive is applied, the solvent needs to be slowly evaporated at 30°C-40°C. When the viscosity of the bonding adhesive layer increases, the adhesive surface of the membrane five is bonded to the adhesive surface of the substrate layer (1).

10. A vacuum coating effect INS membrane and a preparation method thereof according to claim 1, characterized in that: The specific implementation method of the heating and rolling step is to apply 20kg-40kg rolling pressure with double rollers at 80°C-100°C.

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