Method for producing a decorative board with a skin effect

Abstract

The present application relates to the technical field of decorative plate processing, and particularly relates to a preparation method of a skin-feeling matte decorative plate, comprising the following steps: S1: taking UV glue and a base material film as raw materials, and using UV nano-imprinting technology to prepare a film plate a with a matte skin-feeling texture; S2: coating a hardening liquid on the surface of the film plate a, and obtaining a film plate b after UV curing; S3: coating hot melt pressure-sensitive adhesive on the surface of a decorative plate, and then pressing the decorative plate and the film plate b to obtain a pressing body; and S4: peeling the film plate a from the pressing body to obtain a skin-feeling matte decorative plate. The preparation method of the skin-feeling matte decorative plate has no special performance requirement for equipment, and can be mass-produced according to the process route, so that the investment in equipment is small and the production capacity can be expanded. The film plate a used can be reused, which helps to significantly reduce the cost.

Description

Technical Field

[0001] This invention relates to the field of decorative panel processing technology, and in particular to a method for preparing a matte-finish decorative panel with a skin-like feel. Background Technology

[0002] The building decoration industry uses a wide variety of materials, including functional coatings, tiles, natural stone, wallpaper, wall coverings, various types of boards, wood veneers, and so on. Each of these materials has its advantages. For example, decorative boards are becoming increasingly popular in the market due to their short construction cycle and beautiful decorative effect. Against this backdrop, decorative board technology is developing rapidly, and technologies for decorative boards with skin-like and ultra-matte finishes have emerged.

[0003] Currently, matte films are typically produced using electron beam (EB) curing technology, and then the matte film is laminated onto the surface of the board to achieve the matte effect of the decorative board, resulting in a matte skin-feel decorative board; or UV adhesive is directly applied to the surface of the fireproof board paper for excimer curing, followed by EB curing, to obtain a matte skin-feel decorative board.

[0004] While existing technologies can produce matte-finish decorative panels, the EB curing and excimer curing technologies used in the production process require specialized equipment, which is extremely expensive. This results in high production costs for matte-finish decorative panels, which severely restricts their widespread use. Summary of the Invention

[0005] To address the issue of high manufacturing costs in existing matte-finish decorative panels, this invention provides a method for preparing matte-finish decorative panels. This method, through joint innovation in materials and processes, achieves a novel preparation method for matte-finish decorative panels, improving production efficiency while reducing production costs, thus solving the problem of high manufacturing costs in existing matte-finish decorative panels.

[0006] The technical solution adopted by this invention to solve its technical problem is:

[0007] A method for preparing a matte-finish decorative panel includes the following steps:

[0008] S1: Using UV adhesive and substrate film as raw materials, a film plate a with a matte skin-feel texture is prepared by UV nanoimprinting technology;

[0009] S2: A hardening liquid is coated on the surface of the membrane plate a, and after UV curing, membrane plate b is obtained;

[0010] S3: After applying hot melt pressure-sensitive adhesive to the surface of the decorative panel, the decorative panel and the film plate b are pressed together to obtain a pressed body;

[0011] S4: Peel the membrane a from the press body to obtain a matte decorative panel with a skin-like feel.

[0012] Optionally, step S1 includes the following steps:

[0013] S11: Apply the UV adhesive to the surface of the substrate film to obtain a substrate coated with adhesive;

[0014] S12: Roll the substrate surface coated with adhesive using a matte skin-feel mold, and simultaneously irradiate it with a UV lamp to obtain a substrate with a matte skin-feel texture.

[0015] S13: The substrate with a matte skin-feel texture is cured a second time by a UV lamp to obtain a film plate a with a matte skin-feel texture.

[0016] Optionally, the material of the substrate film is selected from at least one of PET, PC, and PMMA.

[0017] Optionally, the matte finish mold is made by engraving with a precision engraving machine and then chemically coated.

[0018] Optionally, a matte finish additive is added to the chemical plating layer.

[0019] Optionally, the UV adhesive comprises the following components in parts by weight:

[0020] Initiator A: 0.5-2 parts;

[0021] Reactive diluent A: 20-40 parts;

[0022] Defoamer A: 0.5-1 part;

[0023] Leveling agent A: 0.5-1 part;

[0024] Acrylic resin A: 20-50 parts;

[0025] 10-15 parts of organosilicon-modified acrylate oligomer.

[0026] Optionally, the acrylate resin A is selected from at least one of polyurethane acrylate resin and bisphenol A type epoxy acrylate resin.

[0027] Optionally, the reactive diluent A is selected from at least one of TPGDA, NPGDA, HDDA, TMPTA, DITMPTA, and IBOA.

[0028] Optionally, the hardening liquid comprises the following components in parts by weight:

[0029] Solvent 50-60 parts;

[0030] 20-30 parts of bisphenol A epoxy acrylate resin;

[0031] Defoamer B 0.5-1 part;

[0032] Leveling agent B 0.5-1 part;

[0033] 5-10 parts of monomer;

[0034] Initiator B 0.5-1 part.

[0035] Optionally, the monomer is selected from at least one of pentaerythritol pentaacrylate, pentaerythritol triacrylate, and butanediol diacrylate.

[0036] The beneficial effects of this invention are:

[0037] The method for preparing matte decorative panels with a skin-like feel provided by this invention has no special performance requirements for equipment. Mass production can be carried out by following this process route with low equipment investment, which helps to expand production capacity. The film plate a used can be reused, which helps to significantly reduce costs. Attached Figure Description

[0038] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0039] Figure 1 This is a schematic diagram illustrating the preparation process of the matte-finish decorative panel in this invention;

[0040] Figure 2 This is a schematic diagram of the peeling process of the matte decorative panel with a skin-like feel in this invention.

[0041] In the diagram: 1-Decorative panel; 2-Glue roller; 3-Anilox roller; 4-Transfer roller; 5-Gap roller; 6-Infrared box; 7-Backing roller; 8-Unwinding shaft; 9-Laying pressure roller; 10-Traction roller; 11-Rewinding shaft. Detailed Implementation

[0042] The present invention will now be described in further detail. The embodiments described below are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0043] To address the issue of high manufacturing costs in existing matte-finish decorative panels, this invention provides a method for preparing a matte-finish decorative panel, comprising the following steps:

[0044] S1: Using UV adhesive and substrate film as raw materials, a film plate a with a matte skin-feel texture is prepared by UV nanoimprinting technology;

[0045] Specifically, through this step, a coating with a matte skin-feel texture is prepared on the surface of the substrate film, wherein the matte skin-feel texture is specifically determined according to the requirements of the decorative panel; that is, the film panel a includes a substrate film and a UV coating disposed on the surface of the substrate film; the UV coating has a matte skin-feel texture.

[0046] S2: A hardening liquid is coated on the surface of membrane plate a, and after UV curing, membrane plate b is obtained;

[0047] Through this step, a hardening layer is prepared on the surface of film a, specifically on the UV coating side of film a; that is, film b includes a substrate film, a UV coating, and a hardening layer arranged sequentially.

[0048] This step can be performed as follows: the UV coating side of the film a is coated using a coating machine. The required coating liquid is a hardening liquid. The preferred coating thickness is 3-5μm. After drying in a hot oven, it is UV cured. After UV curing, it is rolled up to obtain film b. The coated side is the front side of film b. A mercury lamp is selected for the UV lamp, and the curing energy is greater than 800mj to ensure the appearance quality of the coating and to prevent defects such as streaks and dotted lines.

[0049] S3: After applying hot melt pressure-sensitive adhesive to the surface of the decorative panel, press the decorative panel and the film panel b together to obtain a pressed body;

[0050] In this step, the side of the decorative panel coated with hot melt pressure-sensitive adhesive is bonded to the hardened layer side of the film panel b and then pressed together.

[0051] This step can be completed on the corresponding device; see [link / reference]. Figure 1 As shown, the film sheet b roll is placed on the unwinding shaft 8 and threaded onto the take-up shaft 11 according to the threading method shown in the diagram. After the machine starts running, the decorative panel 1 is placed in. The decorative surface of the decorative panel 1 faces upward and enters the coating anilox roller 3 along with the conveyor roller 4. Adhesive is applied by the glue application roller 2, anilox roller 3, gap roller 5, and backing adhesive roller 7, and a layer of adhesive is applied to the decorative surface of the decorative panel 1. After coating, the panel enters the infrared chamber 6. Under the action of infrared radiation, the adhesive flows evenly and the solvent evaporates completely before entering the bonding section. At this time, the speed of the film sheet b unwound by the glue unwinding roller 8 is the same as the speed of the decorative panel 1. Under the action of the bonding pressure roller 9, the film sheet b and the decorative panel are pressed together and bonded together by the adhesive, forming a whole that moves forward.

[0052] The adhesive application to the board can be done using an adhesive roller or an anilox roller, with a coating thickness of 10-30 μm. The adhesive used is a hot-melt pressure-sensitive adhesive, exhibiting good adhesion to the curing liquid, with a cross-cut adhesion test result of 5B or higher. Preferably, this hot-melt pressure-sensitive adhesive is purchased from Changzhou Xuntu Chemical Co., Ltd., brand name UY-151.

[0053] S4: Peel the membrane a from the press body to obtain a matte decorative panel with a skin-like feel.

[0054] Specifically, in step S3, the pressed body formed by pressing enters the next set of bonding rollers. Under the tension of winding, film plate a peels off from the surface of the board to obtain film plate a, which is then wound up on the winding shaft. This film plate a can be reused. See also... Figure 2 As shown, the hardened layer in membrane panel b adheres to the decorative panel under the action of the hot melt pressure-sensitive adhesive on the decorative panel and continues to move forward to the panel collection. During the peeling process, the hardened layer replicates the matte skin-feel texture on the UV coating in membrane panel a, thereby forming a microstructure on the surface of the decorative panel. These microstructures give the decorative panel an ultra-matte, skin-feel function, thus obtaining an ultra-matte skin-feel panel, that is, a skin-feel matte decorative panel.

[0055] The method for preparing matte decorative panels with a skin-like feel provided by this invention has no special performance requirements for equipment. Mass production can be carried out by following this process route with low equipment investment, which helps to expand production capacity. The film plate a used can be reused 20 to 50 times under normal production conditions, which helps to significantly reduce costs.

[0056] Furthermore, this invention does not require changes to the existing decorative panel production line or the existing processing parameters, making it very easy to implement.

[0057] Specifically, step S1 in this invention includes the following steps:

[0058] S11: Apply UV adhesive to the surface of a substrate film to obtain an adhesive-coated substrate;

[0059] The preferred material of the substrate film of the present invention is selected from at least one of PET, PC and PMMA, and the thickness of the substrate film is preferably in the range of 30μm-250μm, and specifically the substrate film grade SH86 (SKC Korea) 50μm is preferred, and the width is determined according to the size of the board.

[0060] S12: Roll the substrate coated with adhesive using a matte skin-feel mold, and simultaneously irradiate it with a UV lamp to obtain a substrate with a matte skin-feel texture.

[0061] Specifically, the present invention preferably uses a precision engraving machine to carve the matte skin-feel mold and then performs a chemical plating treatment. More preferably, a matte additive is added to the chemical plating layer to achieve an ultra-matte effect on the plating surface.

[0062] S13: The substrate with a matte skin-feel texture is cured a second time by a UV lamp to obtain a film plate a with a matte skin-feel texture; preferably, the UV lamp is a mercury lamp with a curing energy greater than 800mJ.

[0063] To enable the reuse of membrane plate a, the UV adhesive preferably comprises the following components by weight:

[0064] Initiator A: 0.5-2 parts;

[0065] Reactive diluent A: 20-40 parts;

[0066] Defoamer A: 0.5-1 part;

[0067] Leveling agent A: 0.5-1 part;

[0068] Acrylic resin A: 20-50 parts;

[0069] 10-15 parts of organosilicon-modified acrylate oligomer.

[0070] This UV adhesive is a 100% solids-containing coating that cures instantly under UV light. During use, it cures rapidly after the first UV irradiation. During the second irradiation, under the influence of a high-pressure mercury lamp, the cured film releases small organosilicon molecules, forming a low-surface-energy coating on the film surface. This ensures excellent release properties of the hardened layer, allowing it to detach from the UV coating under slight external force, with no adhesion between the two coatings. Furthermore, after the hardened layer detaches from the UV coating, almost no hardened material remains on the UV coating surface, facilitating the reuse of film a.

[0071] Specifically, in this invention, the initiator A is preferably selected from at least one of BP, TPOL, 184, 651, 907, and BAPO; the reactive diluent A is preferably selected from at least one of TPGDA, NPGDA, HDDA, TMPTA, DITMPTA, and IBOA; the defoamer A is preferably BYK 1791; the leveling agent A is preferably DOWSIL 204SL; the acrylate resin A is preferably selected from at least one of polyurethane acrylate resin and bisphenol A type epoxy acrylate resin; the silicone-modified acrylate oligomer is a silicone-modified polyurethane acrylate oligomer; the silicone-modified acrylate oligomer is preferably self-made, and its raw materials, by weight, include the following components:

[0072] Polyethylene glycol: 3-6 parts, silicone oil: 10-20 parts, diisocyanate: 5-10 parts, PETA: 1-5 parts, dibutyltin dilaurate: 0.1-0.6 parts.

[0073] To facilitate control of the hardened layer, the present invention preferably comprises the following components by weight:

[0074] Solvent 50-60 parts;

[0075] 20-30 parts of bisphenol A epoxy acrylate resin;

[0076] Defoamer B 0.5-1 part;

[0077] Leveling agent B 0.5-1 part;

[0078] 5-10 parts of monomer;

[0079] Initiator B 0.5-1 part.

[0080] When using this hardener, the added solvent makes it easier to control the thickness of the paint film, resulting in a thinner film. This allows ultraviolet rays to penetrate and cure more easily during UV curing.

[0081] Specifically, the preferred solvent of this invention is ethyl acetate; the preferred defoamer B is BYK 1791; the preferred leveling agent B is DOWSIL 204SL; the preferred initiator B is selected from at least one of BP, TPOL, 184, 651, 907, and BAPO; and the preferred monomer is selected from at least one of dipentaerythritol pentaacrylate, pentaerythritol triacrylate, and butanediol diacrylate.

[0082] The curing liquid provided by this invention, with the addition of a large number of multifunctional monomers, can cause the paint film to shrink to a certain extent during curing. This shrinkage stress will reduce the adhesion between the hardened layer and the UV coating, making subsequent demolding easier.

[0083] In practical applications, the UV adhesive and hardening liquid provided by this invention are used in combination. The UV adhesive replicates the surface texture of the roller mold and is a 100% solids coating that cures instantly under UV light. The hardening liquid is applied to the surface of the cured UV adhesive using a coating method. After heating, the solvent in the coating evaporates, and then it is completely cured under UV light. After curing, the hardening liquid can detach from the UV adhesive under slight external force, and there is no adhesion between the two coatings. Furthermore, after the hardening liquid detaches from the UV adhesive, there is almost no residue of hardening liquid on the UV coating surface. This facilitates the reuse of the film a. The hardened layer formed by the hardening liquid remains on the surface of the decorative panel, providing special effects such as ultra-matte finish, skin-like texture, fingerprint resistance, and acid and alkali resistance.

[0084] In summary, the method for preparing a matte decorative panel with a skin-like feel provided by this invention, based on new materials and processes, achieves the preparation of such a panel while significantly reducing preparation costs. Furthermore, this invention utilizes a matte mold to prepare a matte film using a UV nano-transfer process, allowing for more precise control over gloss compared to excimer lamps. Excimer lamps have short lifespans and are expensive, while this invention uses UV mercury lamps, which have long lifespans and are inexpensive. Because this invention uses a hardening liquid as a surface coating for the decorative panel, the surface can achieve a pencil hardness of 4H or higher. In this invention, the film plate b has a wide range of applications, capable of surface modification on different colors and materials, improving their skin-like feel and ultra-matte finish.

[0085] The decorative panel prepared by the method provided by this invention can achieve a super matte effect with a minimum gloss level of 0. The decorative panel of this invention has a skin-like feel close to that of real skin, and the surface hardness can reach 4H or higher. In addition, the surface of the decorative panel has other functional properties such as anti-pollution, antibacterial and self-cleaning. The preparation method of the decorative panel of this invention has high production efficiency and can be continuously produced. The fixed investment in equipment is low, which is conducive to rapid mass production and capacity ramp-up (compared to curing equipment such as EB and excimer laser).

[0086] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0087] Unless otherwise specified, the matte decorative panels with a skin-like feel in the embodiments and comparative examples of the present invention are prepared according to the following method:

[0088] S11: Using SH86 (Korea SKC) 50μm film as substrate, UV adhesive is coated on the surface of the substrate film to obtain a substrate coated with adhesive.

[0089] S12: A matte skin-feel mold is used to roll the substrate coated with adhesive, and UV lamp is used to irradiate it to obtain a substrate with a matte skin-feel texture; wherein the matte skin-feel mold is made by engraving with a precision engraving machine and then chemically coated, and the chemical coating is further preferably made by adding matte additives.

[0090] S13: After secondary curing of a substrate with a matte textured surface using a UV lamp, the substrate is rolled up to obtain film a; wherein the UV lamp is a mercury lamp, and the curing energy is 800 mJ / cm². 2 .

[0091] S2: After the preparation of membrane a, the UV coating side of membrane a is coated using a coating machine. The required coating liquid is a hardening liquid, and the coating thickness is 3-5 μm. After drying in a hot oven, it is UV cured. After UV curing, it is rolled up to obtain membrane b. The UV lamp is a mercury lamp, and the curing energy is 800 mJ / cm. 2 Ensure the coating has a high-quality appearance, free from streaks and dotted lines.

[0092] S3: See also Figure 1 As shown, the film sheet b roll is placed on the unwinding shaft 8 and threaded onto the take-up shaft 11 according to the threading method shown in the diagram. After the machine starts running, the decorative panel 1 is placed in. The decorative surface of the decorative panel 1 faces upward and enters the coating anilox roller 3 along with the conveyor roller 4. Adhesive is applied by the glue application roller 2, anilox roller 3, gap roller 5, and backing adhesive roller 7, and a layer of adhesive is applied to the decorative surface of the decorative panel 1. After coating, the panel enters the infrared chamber 6. Under the action of infrared radiation, the adhesive flows evenly and the solvent evaporates completely before entering the bonding section. At this time, the speed of the film sheet b unwound by the glue unwinding roller 8 is the same as the speed of the decorative panel 1. Under the action of the bonding pressure roller 9, the film sheet b and the decorative panel are pressed together and bonded together by the adhesive, forming a whole that moves forward.

[0093] In this step, the adhesive coating thickness is 20μm. The adhesive used is a hot melt pressure-sensitive adhesive, which was purchased from Changzhou Xuntu Chemical Co., Ltd., brand name UY-151.

[0094] S4: The pressed body formed in step S3 enters the next set of bonding rollers. Under the tension of the take-up roller 11, the film plate a is peeled off from the surface of the board to obtain film plate a, which enters the take-up shaft for winding. At the same time, the hardened layer in the film plate b is adhered to the decorative board 1 by the hot melt pressure-sensitive adhesive on the decorative board 1. Under the action of the traction roller 10, it continues to move forward to the take-up plate to obtain the skin-feel matte decorative board.

[0095] Example 1

[0096] The matte decorative panel with a skin-like feel provided in this embodiment is prepared according to the above method, wherein the UV adhesive comprises the following components by weight:

[0097] Initiator A, 1 part;

[0098] 37.4 parts of reactive diluent A;

[0099] Defoamer A 0.8 parts;

[0100] Leveling agent A, 0.8 parts;

[0101] Acrylic resin A, 45 parts;

[0102] 15 parts of organosilicon-modified acrylate oligomer.

[0103] Initiator A is TPOL; reactive diluent A is TPGDA; preferred defoamer A is BYK 1791; leveling agent A is DOWSIL 204SL; acrylate resin A is polyurethane acrylate resin, manufactured and branded as JS311 by Hunan Jinhai Technology Co., Ltd.; the silicone-modified acrylate oligomer is self-made, and its raw materials, by weight, include the following components:

[0104] Polyethylene glycol: 5 parts, silicone oil: 15 parts, diisocyanate: 8 parts, PETA: 3 parts, dibutyltin dilaurate: 0.3 parts.

[0105] The hardening liquid comprises the following components by weight:

[0106] 60 parts solvent;

[0107] 30 parts of bisphenol A epoxy acrylate resin;

[0108] Defoamer B, 0.5 parts;

[0109] Leveling agent B, 0.8 parts;

[0110] 8 portions of the single component;

[0111] Initiator B 0.7 parts.

[0112] The solvent is ethyl acetate; the manufacturer and brand of bisphenol A epoxy acrylate resin is Zhanxin 605; defoamer B is BYK 1791; leveling agent B is DOWSIL 204SL; initiator B is BP; and the monomer is dipentaerythritol pentaacrylate.

[0113] Example 2

[0114] The matte decorative panel with a skin-like feel provided in this embodiment is prepared according to the above method, wherein the UV adhesive comprises the following components by weight:

[0115] Initiator A, 2 parts;

[0116] 36 parts of reactive diluent A;

[0117] Defoamer A, 1 part;

[0118] Leveling agent A, 1 part;

[0119] Acrylic resin A, 50 parts;

[0120] 10 parts of organosilicon-modified acrylate oligomer.

[0121] Initiator A is TPOL; reactive diluent A is TPGDA; preferred defoamer A is BYK 1791; leveling agent A is DOWSIL 204SL; acrylate resin A is polyurethane acrylate resin, manufactured and branded as JS311 by Hunan Jinhai Technology Co., Ltd.; the silicone-modified acrylate oligomer is self-made, and its raw materials, by weight, include the following components:

[0122] Polyethylene glycol: 5 parts, silicone oil: 15 parts, diisocyanate: 8 parts, PETA: 3 parts, dibutyltin dilaurate: 0.3 parts.

[0123] The hardening liquid comprises the following components by weight:

[0124] 57 parts solvent;

[0125] 30 parts of bisphenol A epoxy acrylate resin;

[0126] Defoamer B, 1 part;

[0127] Leveling agent B, 1 part;

[0128] 10 portions of the single component;

[0129] Initiator B, 1 part.

[0130] The solvent is ethyl acetate; the manufacturer and brand of bisphenol A epoxy acrylate resin is Zhanxin 605; defoamer B is BYK 1791; leveling agent B is DOWSIL 204SL; initiator B is BP; and the monomer is dipentaerythritol pentaacrylate.

[0131] Example 3

[0132] The difference between this embodiment and Embodiment 1 is that the acrylate resin A in the UV adhesive is a bisphenol A type epoxy acrylate resin, and its manufacturer and brand name is Zhanxin 605.

[0133] Comparative Example 1

[0134] The matte decorative panel with a skin-like finish provided in this comparative example was prepared according to the above method, wherein the UV adhesive, by weight parts, comprises the following components:

[0135] Initiator A, 1 part;

[0136] 37.4 parts of reactive diluent A;

[0137] Defoamer A 0.8 parts;

[0138] Leveling agent A, 0.8 parts;

[0139] Acrylic resin A, 45 parts.

[0140] Initiator A is TPOL; reactive diluent A is TPGDA; preferred defoamer A is BYK 1791; leveling agent A is DOWSIL 204SL; acrylate resin A is polyurethane acrylate resin, manufactured and branded as JS311 by Hunan Jinhai Technology Co., Ltd.

[0141] The hardening liquid comprises the following components by weight:

[0142] 60 parts solvent;

[0143] 30 parts of bisphenol A epoxy acrylate resin;

[0144] Defoamer B, 0.5 parts;

[0145] Leveling agent B, 0.8 parts;

[0146] 8 portions of the single component;

[0147] Initiator B 0.7 parts.

[0148] The solvent is ethyl acetate; the manufacturer and brand of bisphenol A epoxy acrylate resin is Zhanxin 605; defoamer B is BYK 1791; leveling agent B is DOWSIL 204SL; initiator B is BP; and the monomer is dipentaerythritol pentaacrylate.

[0149] Comparative Example 2

[0150] The matte decorative panel with a skin-like finish provided in this comparative example was prepared according to the above method, wherein the UV adhesive, by weight parts, comprises the following components:

[0151] Initiator A, 1 part;

[0152] 37.4 parts of reactive diluent A;

[0153] Defoamer A 0.8 parts;

[0154] Leveling agent A, 0.8 parts;

[0155] Acrylic resin A, 45 parts;

[0156] 20 parts of organosilicon-modified acrylate oligomer.

[0157] Initiator A is TPOL; reactive diluent A is TPGDA; preferred defoamer A is BYK 1791; leveling agent A is DOWSIL 204SL; acrylate resin A is polyurethane acrylate resin, manufactured and branded as JS311 by Hunan Jinhai Technology Co., Ltd.; the silicone-modified acrylate oligomer is self-made, and its raw materials, by weight, include the following components:

[0158] Polyethylene glycol: 5 parts, silicone oil: 15 parts, diisocyanate: 8 parts, PETA: 3 parts, dibutyltin dilaurate: 0.3 parts.

[0159] The hardening liquid comprises the following components by weight:

[0160] 60 parts solvent;

[0161] 30 parts of bisphenol A epoxy acrylate resin;

[0162] Defoamer B, 0.5 parts;

[0163] Leveling agent B, 0.8 parts;

[0164] 8 portions of the single component;

[0165] Initiator B 0.7 parts.

[0166] The solvent is ethyl acetate; the manufacturer and brand of bisphenol A epoxy acrylate resin is Zhanxin 605; defoamer B is BYK 1791; leveling agent B is DOWSIL 204SL; initiator B is BP; and the monomer is dipentaerythritol pentaacrylate.

[0167] Comparative Example 3

[0168] The matte decorative panel with a skin-like finish provided in this comparative example was prepared according to the above method, wherein the UV adhesive, by weight parts, comprises the following components:

[0169] Initiator A, 1 part;

[0170] 37.4 parts of reactive diluent A;

[0171] Defoamer A 0.8 parts;

[0172] Leveling agent A, 0.8 parts;

[0173] Acrylic resin A, 45 parts;

[0174] 15 parts of organosilicon-modified acrylate oligomer.

[0175] Initiator A is TPOL; reactive diluent A is TPGDA; preferred defoamer A is BYK 1791; leveling agent A is DOWSIL 204SL; acrylate resin A is polyester acrylate resin, manufactured and branded as Zhanxin 810; the silicone-modified acrylate oligomer is self-made, and its raw materials, by weight, include the following components:

[0176] Polyethylene glycol: 5 parts, silicone oil: 15 parts, diisocyanate: 8 parts, PETA: 3 parts, dibutyltin dilaurate: 0.3 parts.

[0177] The hardening liquid comprises the following components by weight:

[0178] 60 parts solvent;

[0179] 30 parts of bisphenol A epoxy acrylate resin;

[0180] Defoamer B, 0.5 parts;

[0181] Leveling agent B, 0.8 parts;

[0182] 8 portions of the single component;

[0183] Initiator B 0.7 parts.

[0184] The solvent is ethyl acetate; the manufacturer and brand of bisphenol A epoxy acrylate resin is Zhanxin 605; defoamer B is BYK 1791; leveling agent B is DOWSIL 204SL; initiator B is BP; and the monomer is dipentaerythritol pentaacrylate.

[0185] Comparative Example 4

[0186] The matte decorative panel with a skin-like finish provided in this comparative example was prepared according to the above method, wherein the UV adhesive, by weight parts, comprises the following components:

[0187] Initiator A, 1 part;

[0188] 37.4 parts of reactive diluent A;

[0189] Defoamer A 0.8 parts;

[0190] Leveling agent A, 0.8 parts;

[0191] Acrylic resin A, 45 parts;

[0192] 15 parts of organosilicon-modified acrylate oligomer.

[0193] Initiator A is TPOL; reactive diluent A is TPGDA; preferred defoamer A is BYK 1791; leveling agent A is DOWSIL 204SL; acrylate resin A is polyurethane acrylate resin, manufactured and branded as JS311 by Hunan Jinhai Technology Co., Ltd.; the silicone-modified acrylate oligomer is self-made, and its raw materials, by weight, include the following components:

[0194] Polyethylene glycol: 5 parts, silicone oil: 15 parts, diisocyanate: 8 parts, PETA: 3 parts, dibutyltin dilaurate: 0.3 parts.

[0195] The hardening liquid comprises the following components by weight:

[0196] 60 parts solvent;

[0197] 30 parts of bisphenol A epoxy acrylate resin;

[0198] Defoamer B, 0.5 parts;

[0199] Leveling agent B, 0.8 parts;

[0200] 8 portions of the single component;

[0201] Initiator B 0.7 parts.

[0202] The solvent is ethyl acetate; the manufacturer and brand of bisphenol A epoxy acrylate resin is Zhanxin 605; defoamer B is BYK 1791; leveling agent B is DOWSIL 204SL; initiator B is BP; and monomer is IBOA.

[0203] Comparative Example 5

[0204] The matte decorative panel with a skin-like finish provided in this comparative example was prepared according to the above method, wherein the UV adhesive, by weight parts, comprises the following components:

[0205] Initiator A, 1 part;

[0206] 37.4 parts of reactive diluent A;

[0207] Defoamer A 0.8 parts;

[0208] Leveling agent A, 0.8 parts;

[0209] Acrylic resin A, 45 parts;

[0210] 15 parts of organosilicon-modified acrylate oligomer.

[0211] Initiator A is TPOL; reactive diluent A is TPGDA; preferred defoamer A is BYK 1791; leveling agent A is DOWSIL 204SL; acrylate resin A is polyurethane acrylate resin, manufactured and branded as JS311 by Hunan Jinhai Technology Co., Ltd.; the silicone-modified acrylate oligomer is self-made, and its raw materials, by weight, include the following components:

[0212] Polyethylene glycol: 5 parts, silicone oil: 15 parts, diisocyanate: 8 parts, PETA: 3 parts, dibutyltin dilaurate: 0.3 parts.

[0213] The hardening liquid comprises the following components by weight:

[0214] 60 parts solvent;

[0215] 30 parts of bisphenol A epoxy acrylate resin;

[0216] Defoamer B, 0.5 parts;

[0217] Leveling agent B, 0.8 parts;

[0218] 15 portions of the single component;

[0219] Initiator B 0.7 parts.

[0220] The solvent is ethyl acetate; the manufacturer and brand of bisphenol A epoxy acrylate resin is Zhanxin 605; defoamer B is BYK 1791; leveling agent B is DOWSIL 204SL; initiator B is BP; and the monomer is dipentaerythritol pentaacrylate.

[0221] Comparative Example 6

[0222] The matte decorative panel with a skin-like finish provided in this comparative example was prepared according to the above method, wherein the UV adhesive, by weight parts, comprises the following components:

[0223] Initiator A, 1 part;

[0224] 37.4 parts of reactive diluent A;

[0225] Defoamer A 0.8 parts;

[0226] Leveling agent A, 0.8 parts;

[0227] Acrylic resin A, 45 parts;

[0228] 15 parts of organosilicon-modified acrylate oligomer.

[0229] Initiator A is TPOL; reactive diluent A is TPGDA; preferred defoamer A is BYK 1791; leveling agent A is DOWSIL 204SL; acrylate resin A is polyurethane acrylate resin, manufactured and branded as JS311 by Hunan Jinhai Technology Co., Ltd.; the silicone-modified acrylate oligomer is self-made, and its raw materials, by weight, include the following components:

[0230] Polyethylene glycol: 5 parts, silicone oil: 15 parts, diisocyanate: 8 parts, PETA: 3 parts, dibutyltin dilaurate: 0.3 parts.

[0231] The hardening liquid comprises the following components by weight:

[0232] 60 parts solvent;

[0233] 30 parts of polyester acrylate resin;

[0234] Defoamer B, 0.5 parts;

[0235] Leveling agent B, 0.8 parts;

[0236] 8 portions of the single component;

[0237] Initiator B 0.7 parts.

[0238] The solvent is ethyl acetate; the manufacturer and brand of the polyester acrylate resin is Changxing 6311-100; the defoamer B is BYK 1791; the leveling agent B is DOWSIL 204SL; the initiator B is BP; and the monomer is dipentaerythritol pentaacrylate.

[0239] The decorative panels prepared in the above embodiments and comparative examples were subjected to performance tests, and the test methods are as follows:

[0240] The peeling condition of membrane panel a is inspected visually; the number of times membrane panel a can be reused is determined by the number of times the hardened layer cannot be peeled off smoothly, or the number of times the matte finish of the decorative panel does not meet the requirements even though the hardened layer can be peeled off smoothly; pencil hardness is tested according to GB / T-17657; gloss is tested according to GB / T-9754; skin feel is inspected by touch; bending crack resistance is inspected by manual bending.

[0241] The test results are shown in Table 1:

[0242] Table 1

[0243]

[0244] As can be seen from the table above, the preparation method of the skin-feel matte decorative panel provided in the various embodiments of the present invention is simple, the film plate a can be reused multiple times, and the cost is low; moreover, the prepared skin-feel matte decorative panel has high hardness and has an ultra-matte and skin-feel effect.

[0245] The difference between Comparative Example 1 and Example 1 is that no silicone-modified acrylate oligomer was added to the UV adhesive. During the preparation of the matte decorative panel, the film a was not easy to peel off and had poor reusability.

[0246] The difference between Comparative Example 2 and Example 1 is that the amount of silicone-modified acrylate oligomer added to the UV adhesive was increased. The appearance of the prepared matte decorative panel with a skin feel met the requirements, but the UV coating had poor adhesion to the substrate, resulting in a reduction in the number of times the film a could be reused.

[0247] The difference between Comparative Example 3 and Example 1 is that polyester acrylate resin is used instead of polyurethane acrylate resin in UV glue, which reduces the number of times film a can be reused during the preparation of matte decorative panel.

[0248] The difference between Comparative Example 4 and Example 1 is that the monofunctional monomer IBOA was used to replace the dipentaerythritol pentaacrylate in the hardening liquid. The resulting matte decorative panel with a skin-feel was not hard enough and could not meet the usage requirements.

[0249] The difference between Comparative Example 5 and Example 1 is that the amount of dipentaerythritol pentaacrylate added to the hardening liquid was increased, and the prepared skin-feel matte decorative panel coating on the curved surface was prone to cracking.

[0250] The difference between Comparative Example 6 and Example 1 is that the bisphenol A epoxy acrylate resin in the curing liquid was replaced with polyester acrylate resin, resulting in insufficient hardness of the prepared matte decorative panel.

[0251] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A method for preparing a matte-finish decorative panel, characterized in that, Includes the following steps: S1: Using UV adhesive and substrate film as raw materials, a film plate a with a matte skin-feel texture is prepared by UV nanoimprinting technology; S2: A hardening liquid is coated on the surface of the membrane plate a, and after UV curing, membrane plate b is obtained; S3: After applying hot melt pressure-sensitive adhesive to the surface of the decorative panel, the decorative panel and the film plate b are pressed together to obtain a pressed body; S4: Peel the membrane a from the press body to obtain a matte decorative panel with a skin-feel feel; The UV adhesive comprises the following components by weight: Initiator A: 0.5-2 parts; Reactive diluent A: 20-40 parts; Defoamer A: 0.5-1 part; Leveling agent A: 0.5-1 part; Acrylic resin A: 20-50 parts; 10-15 parts of organosilicon-modified acrylate oligomer; The acrylate resin A is selected from at least one of polyurethane acrylate resin and bisphenol A type epoxy acrylate resin; The hardening liquid comprises the following components in parts by weight: Solvent 50-60 parts; 20-30 parts of bisphenol A epoxy acrylate resin; Defoamer B 0.5-1 part; Leveling agent B 0.5-1 part; 5-10 parts of monomer; Initiator B 0.5-1 part; The monomer is selected from at least one of pentaerythritol pentaacrylate, pentaerythritol triacrylate, and butanediol diacrylate.

2. The method for preparing the matte decorative panel with a skin-like feel as described in claim 1, characterized in that, Step S1 includes the following steps: S11: Apply the UV adhesive to the surface of the substrate film to obtain a substrate coated with adhesive; S12: Roll the substrate surface coated with adhesive using a matte skin-feel mold, and simultaneously irradiate it with a UV lamp to obtain a substrate with a matte skin-feel texture. S13: The substrate with a matte skin-feel texture is cured a second time by a UV lamp to obtain a film plate a with a matte skin-feel texture.

3. The method for preparing the matte decorative panel with a skin-like feel as described in claim 2, characterized in that, The substrate film is made of at least one of PET, PC, and PMMA.

4. The method for preparing the matte decorative panel with a skin-like feel as described in claim 2, characterized in that, The matte finish mold is made by precision engraving machine and then chemically coated.

5. The method for preparing the matte decorative panel with a skin-like feel as described in claim 4, characterized in that, The chemical plating layer contains a matte finish additive.

6. The method for preparing the matte decorative panel with a skin-like feel as described in claim 1, characterized in that, The active diluent A is selected from at least one of TPGDA, NPGDA, HDDA, TMPTA, DITMPTA, and IBOA.

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