Decorative panel and special equipment for preparing decorative panel

Abstract

The utility model provides a decoration panel and a special device for preparing the decoration panel, the decoration panel comprises a filling layer, the filling layer comprises a first filling surface and a second filling surface which are oppositely arranged; the effect layer comprises a first effect surface and a second effect surface which are oppositely arranged, and the first effect surface is in contact with the second filling surface; wherein the effect layer and the filling layer are integrally formed through a double-layer co-extrusion process, and a texture layer is formed on at least one surface; the surface comprises a first filling surface, a second filling surface, a first effect surface and a second effect surface. The utility model solves the technical problems that the conventional process scheme is low in production efficiency and complex in processing procedure, and the one-step forming of texture, color and texture cannot be realized.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliance panels, and in particular, to a decorative panel and a special device for preparing the decorative panel. Background Art

[0002] At present, the decorative panels of high-end products in the industry basically adopt processes such as film laminating, spraying, PC printing, and acrylic thermoforming to realize the transformation of design schemes.

[0003] However, these conventional processes have many limitations: the conventional process schemes usually include two major process steps of one-time forming of materials and secondary surface treatment of surface effects, with low production efficiency, complex processing processes, and inability to achieve one-time forming of texture, color, and texture. Summary of the Utility Model

[0004] The utility model solves the technical problems of low production efficiency, complex processing processes, and inability to achieve one-time forming of texture, color, and texture in the conventional process scheme.

[0005] To solve the above problems, the utility model provides a decorative panel, including: a filling layer, the filling layer includes a first filling surface and a second filling surface arranged oppositely; an effect layer, the effect layer includes a first effect surface and a second effect surface arranged oppositely, and the first effect surface and the second filling surface are in contact with each other; wherein, the effect layer and the filling layer are integrally formed by a double-layer co-extrusion process, and a texture layer is formed on at least one surface; the surface includes: the first filling surface, the second filling surface, the first effect surface, and the second effect surface.

[0006] Compared with the prior art, the technical effects achieved by adopting this technical solution are: the filling layer is used to form the main thickness of the decorative panel; the effect layer is used to create the surface color and texture of the decorative panel, and the combination of the filling layer and the effect layer is realized by the melting performance of the material itself, without any adhesive treatment in the middle. The surfaces of the effect layer and the filling layer are directly in contact with each other, and the effect layer and the filling layer are formed at one time by a double-layer co-extrusion process. By adopting the double-layer co-extrusion process, the transformation and implementation of the design scheme of the decorative panel of household appliances are realized at low cost; and a texture layer is formed on at least one surface, so that one-time forming and secondary surface treatment are completed in one go, with good appearance consistency, uniform surface texture, stable display effect, and at the same time helping to reduce costs and improve quality in product appearance design, and improving production quality and efficiency.

[0007] In an example of the utility model, the filling layer is a polymer material layer; the effect layer is a paint-free material layer.

[0008] Compared with the prior art, the technical effects achieved by adopting this technical solution are as follows: The polymer material layer has characteristics such as a huge molecular weight, high strength, high toughness, light weight, low density, corrosion resistance, degradability, and insulation, and the cost is relatively low; the metal spraying texture is presented by the spray-free material, and the spray-free material layer is applied to the decorative panel through a double-layer extrusion process, solving the injection flow mark problem of the spray-free material, and the surface can present a metallic texture without secondary spraying treatment; in this application, the polymer material layer and the spray-free material layer reduce the material cost and improve the production efficiency, which is conducive to large-scale application and promotion.

[0009] In an example of the present utility model, the polymer material layer includes: a solid-color polymer material and a high-transparency polymer material.

[0010] Compared with the prior art, the technical effects achieved by adopting this technical solution are as follows: Ordinary solid-color polymer plastics are used to fill the thickness, and then high-transparency polymer materials are used as the surface filling to achieve the transparent effect of the effect layer, meeting the display light transmission requirements of the decorative panel. Through the combined application of the solid-color polymer material and the high-transparency polymer material, both the thickness can be filled and the display light transmission effect can be achieved.

[0011] Compared with the prior art, the technical effects achieved by adopting this technical solution are as follows: The metallic and pearlescent textures of the effect layer are determined by the content of effect powders such as silver powder and pearlescent powder added in the polymer material. The better the texture, the higher the content of the effect powder, and the corresponding worse the display light transmission performance.

[0012] In an example of the present utility model, the thickness of the filling layer is D1; the thickness of the effect layer is D2, where D1:D2 = 5:1.

[0013] Compared with the prior art, the technical effects achieved by adopting this technical solution are as follows: The thickness and transparency of the decorative panel can be adjusted by adjusting the thicknesses of the filling layer and the effect layer; preferably, the ratio of the thickness of the filling layer to the thickness of the effect layer is 5:1.

[0014] In an example of the present utility model, the thickness of the filling layer is 1.25 mm; the thickness of the effect layer is 0.25 mm.

[0015] Compared with the prior art, the technical effects achieved by adopting this technical solution are as follows: The overall thickness of the decorative panel is 1.5 mm.

[0016] On the other hand, the embodiment of the present utility model further provides a special device for preparing a decorative panel. The special device includes: a first extrusion device, through which a first substrate forms a filling layer; a second extrusion device, through which a second substrate forms an effect layer; a die head, which is connected to the first extrusion device and the second extrusion device and is used to realize the convergence of the filling layer and the effect layer; a pressure roller assembly, which is used to form a texture layer on at least one surface; wherein, the first extrusion device, the die head and the pressure roller assembly are arranged in sequence along the conveying direction.

[0017] Compared with the prior art, the technical effects achieved by adopting this technical solution are as follows: In this application, the first substrate forms a filling layer through the first extrusion device. Through the improvement of the equipment, a new double-layer co-extrusion process replicates the second extrusion device that is the same as the first extrusion device in the process, and the second substrate is extruded through the second extrusion device to form an effect layer; finally, the convergence of the first substrate and the second substrate (that is, the convergence of the filling layer and the effect layer) is completed at the die head, thereby realizing double-color co-extrusion and achieving the transformation and implementation of the home appliance decorative panel at low cost. The flow channel design of the die head can separately control the flow rates of the first substrate and the second substrate, thereby controlling the thicknesses of the filling layer and the effect layer. At the same time, the product form (plane or single arc surface) can be adjusted through the die head, so that a thickness difference is formed when the two-color materials converge at the die orifice.

[0018] In an example of the present utility model, the pressure roller assembly includes: a first pressure roller, a second pressure roller and a third pressure roller arranged in sequence along the conveying direction, and the third pressure roller is arranged on the side of the first pressure roller away from the die head; wherein, the second pressure roller is a metal texture roller.

[0019] Compared with the prior art, the technical effects achieved by adopting this technical solution are as follows: The designed texture is implemented on the surface of the second pressure roller through the micro-nano laser precision engraving processing technology. Then, through the rotation and mutual traction of the three pressure rollers, namely the first pressure roller, the second pressure roller and the third pressure roller, a three-dimensional texture imprinting (the texture depth can be designed according to requirements) is completed before the filling layer and the effect layer are completely cooled, and a texture layer is formed on at least one surface. One metal texture roller can serve products of various sizes and forms, realizing the universality of the texture roller mold and greatly improving the production efficiency.

[0020] In an example of the present utility model, the special device further includes: a cooling conveyor belt, which is arranged on the side of the pressure roller assembly away from the die head; a thickness measuring device, which is arranged on the side of the cooling conveyor belt away from the pressure roller assembly.

[0021] Compared with the prior art, the technical effects achieved by adopting this technical solution are as follows: Before the filling layer and the effect layer are completely cooled, after the three-dimensional texture is embossed at the pressure roller assembly, the decorative panel is sent out along the conveying direction to the cooling conveyor belt to complete the material shaping; the thickness measuring device is used to detect the thickness of the decorative panel sent out by the cooling conveyor belt, and after the thickness detection is completed, a decorative panel with a thickness of 1.5 mm is finally formed.

[0022] In an example of the present utility model, the first extrusion device includes: a first extrusion main machine, a first feeding port, a first screw rod, and a first vacuum box, and the first extrusion main machine, the first feeding port, the first screw rod, and the first vacuum box are connected in sequence; the second extrusion device includes: a second extrusion main machine, a second feeding port, a second screw rod, and a second vacuum box, and the second extrusion main machine, the second feeding port, the second screw rod, and the second vacuum box are connected in sequence; wherein, the first vacuum box and the second vacuum box are connected to the die head.

[0023] Compared with the prior art, the technical effects achieved by adopting this technical solution are as follows: After the filling layer and the effect layer are formed, the confluence of the two materials is finally completed at the die head, thereby realizing two-color co-extrusion.

[0024] After adopting the technical solution of the present utility model, the following technical effects can be achieved:

[0025] (1) The filling layer is used to constitute the main thickness of the decorative panel; the effect layer is used to create the surface color texture of the decorative panel. The combination of the filling layer and the effect layer is realized by the melting performance of the material itself, and no adhesive treatment is required in the middle;

[0026] (2) The surfaces of the effect layer and the filling layer are in direct contact with each other. The effect layer and the filling layer are formed at one time by a double-layer co-extrusion process. By adopting the double-layer co-extrusion process, the transformation and implementation of the design scheme of the decorative panel for household appliances can be realized at low cost; and a texture layer is formed on at least one surface, so that the one-time forming and the secondary surface treatment are completed in one go, with good appearance consistency, uniform surface texture, stable display effect, and at the same time helping to reduce costs and improve quality in product appearance design, and improving production quality and efficiency;

[0027] (3) The spray-free material layer is applied to the decorative panel through a double-layer extrusion process, solving the problem of injection flow marks of the spray-free material, and the surface can present a metallic texture without secondary spraying treatment; in this application, the polymer material layer and the spray-free material layer reduce the material cost and improve the production efficiency, which is beneficial to large-scale application and promotion;

[0028] (4) The metal texture roller can serve products of various sizes and shapes, realizing the universality of the texture roller mold and greatly improving the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic structural diagram of a decorative panel provided by Embodiment 1 of the present utility model;

[0030] Figure 2 It is a schematic structural diagram of a special device for preparing a decorative panel in the prior art;

[0031] Figure 3 It is a schematic structural diagram of the connection among a first extrusion device, a second extrusion device and a die head in the special device for preparing a decorative panel provided in the second embodiment of the present invention;

[0032] Figure 4 It is another schematic structural diagram of a decorative panel provided in the first embodiment of the present invention;

[0033] Figure 5 It is another schematic structural diagram of a decorative panel provided in the first embodiment of the present invention.

[0034] Explanation of reference numerals:

[0035] 10. Filling layer; 11. First filling surface; 12. Second filling surface; 20. Effect layer; 21. First effect surface; 22. Second effect surface; 30. Texture layer; 110. First extrusion device; 111. First extrusion main machine; 112. First feeding port; 113. First screw; 114. First feeding cylinder; 115. First vacuum box; 120. Second extrusion device; 121. Second extrusion main machine; 122. Second feeding port; 123. Second screw; 124. Second feeding cylinder; 125. Second vacuum box; 130. Die head; 140. Press roller assembly; 141. First press roller; 142. Second press roller; 143. Third press roller; 150. Cooling conveyor belt; 160. Thickness measuring device; 170. Punching die; 180. Inspection platform; 190. Rewinding material. Detailed implementation manners

[0036] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0037]

Embodiment 1

[0038] Refer to Figure 1 , which is a decorative panel provided in the first embodiment of the present invention. Refer to Figures 4 - 5, the decorative panel includes: a filling layer 10 and an effect layer 20. The filling layer 10 includes a first filling surface 11 and a second filling surface 12 that are oppositely arranged; the effect layer 20 includes a first effect surface 21 and a second effect surface 22 that are oppositely arranged, and the first effect surface 21 is in contact with the second filling surface 12; wherein, the effect layer 20 and the filling layer 10 are integrally formed by a double-layer co-extrusion process, and a texture layer 30 is formed on at least one surface; the surface includes: the first filling surface 11, the second filling surface 12, the first effect surface 21, and the second effect surface 22.

[0039] In a specific embodiment, the filling layer 10 is used to form the main thickness of the decorative panel; the effect layer 20 is used to create the surface color texture of the decorative panel. The combination of the filling layer 10 and the effect layer 20 is realized by the melting properties of the materials themselves, and no adhesive treatment is required in the middle. The surfaces of the effect layer 20 and the filling layer 10 are directly in contact with each other. The effect layer 20 and the filling layer 10 are formed in one step by a double-layer co-extrusion process. By using the double-layer co-extrusion process, the transformation and implementation of the design scheme of the decorative panel for household appliances are realized at low cost; and a texture layer 30 is formed on at least one surface, making the one-step forming and the secondary surface treatment seamless, with good appearance consistency, uniform surface texture, stable display effect, and at the same time helping to reduce costs and improve quality in product appearance design and improve production quality and efficiency.

[0040] Further, the filling layer 10 is a polymer material layer; the effect layer 20 is a paint-free material layer.

[0041] Specifically, the polymer material layer has characteristics such as huge molecular weight, high strength, high toughness, light weight, low density, corrosion resistance, degradability, insulation, etc., and the cost is relatively low; the metal spraying texture is presented through the paint-free material, and the paint-free material layer is applied to the decorative panel through a double-layer extrusion process, solving the injection flow mark problem of the paint-free material, and the surface can present a metallic texture without secondary spraying treatment; the paint-free material is mainly paint-free plastic. This application reduces the material cost and improves the production efficiency through the polymer material layer and the paint-free material layer, which is conducive to large-scale application and promotion.

[0042] Further, the polymer material layer includes: solid-color polymer material and high-transparency polymer material.

[0043] Specifically, in the prior art, materials such as metals and polymer plastics are usually used as the molding substrates. Due to their single appearance effect and inability to achieve the functions of fine texture and display light transmission, they cannot be applied to the decorative panels of household appliances that pursue a delicate appearance and have display requirements; in this application, ordinary solid-color polymer plastics are used to fill the thickness, and then high-transparency polymer materials are used as the surface filling to achieve the transparent effect of the effect layer 20, meeting the display light transmission requirements of the decorative panel. Through the combined application of solid-color polymer materials and high-transparency polymer materials, both the thickness can be filled and the display light transmission effect can be achieved.

[0044] Preferably, through testing, various high-transparency polymer materials such as transparent PC, PMMA, and transparent ABS have been verified. Finally, the high-transparency polymer materials in this application have selected ABS materials and PMMA materials, which can better combine the dual advantages of cost and effect.

[0045] Specifically, the metallic and pearlescent textures of the effect layer 20 are determined by the content of effect powders such as silver powder and pearlescent powder added in the polymer material. The better the texture, the higher the content of the effect powder, and correspondingly, the worse the light transmittance performance.

[0046] Preferably, in terms of color adjustment, the color state is confirmed by proofing the color plate of the surface color. Since the color of the material will change slightly after passing through the high-temperature screw, in this application, after the extrusion lamination process, the actual color state is compared and analyzed and color correction is carried out until the final color scheme of the finished product is confirmed; the spray-free material is applied to the decorative panel through the extrusion process to solve the injection flow mark problem of the spray-free material.

[0047] Furthermore, the thickness of the filling layer 10 is D1; the thickness of the effect layer 20 is D2, where D1:D2 = 5:1.

[0048] Specifically, the thickness and transparency of the decorative panel can be adjusted by adjusting the thicknesses of the filling layer 10 and the effect layer 20; preferably, the ratio of the thickness of the filling layer 10 to the thickness of the effect layer 20 is 5:1.

[0049] Furthermore, the thickness of the filling layer 10 is 1.25 mm; the thickness of the effect layer 20 is 0.25 mm.

[0050] Specifically, the overall thickness of the decorative panel is 1.5 mm.

[0051]

Embodiment 2

[0052] See Figures 2 - 3 , this embodiment also provides a special device for preparing the decorative panel as described in the first embodiment above. The special device includes: a first extrusion device 110, a second extrusion device 120, a die head 130, and a roller assembly 140. The first substrate forms the filling layer 10 through the first extrusion device 110; the second substrate forms the effect layer 20 through the second extrusion device 120; the die head 130 is connected to the first extrusion device 110 and the second extrusion device 120 and is used to realize the convergence of the filling layer 10 and the effect layer 20; the roller assembly 140 is used to form a texture layer 30 on at least one surface; wherein, the first extrusion device 110, the die head 130, and the roller assembly 140 are arranged in sequence along the conveying direction.

[0053] In a specific embodiment, only the first extrusion device 110 is provided in the conventional extrusion process, which can only achieve the extrusion of a single color; in the present application, the first substrate forms the filling layer 10 through the first extrusion device 110. Through the improvement of the equipment in the new double-layer co-extrusion process, a second extrusion device 120 identical to the first extrusion device 110 is replicated during the process, and the second substrate is extruded through the second extrusion device 120 to form the effect layer 20; finally, the convergence of the first substrate and the second substrate (that is, the convergence of the filling layer 10 and the effect layer 20) is completed at the die head 130, thereby realizing double-color co-extrusion and achieving the transformation and implementation of the home appliance decorative panel at low cost.

[0054] The flow channel design of the die head 130 can separately control the flow rates of the first substrate and the second substrate, thereby controlling the thicknesses of the filling layer 10 and the effect layer 20. At the same time, the product form (plane or single arc surface) can be adjusted through the die head 130, so that a thickness difference is formed when the two-color materials converge at the die orifice. The double-color co-extrusion process can complete the texture and shaping of the decorative panel in one go, and the universality of the mold is extremely strong, which is convenient for expanding products of different sizes, colors, and textures. At the same time, the process is simple, which is conducive to batch production, and has the advantages of high production efficiency and high qualified product rate.

[0055] Further, the pressure roller assembly 140 includes: a first pressure roller 141, a second pressure roller 142, and a third pressure roller 143 arranged in sequence along the conveying direction, and the third pressure roller 143 is arranged on the side of the first pressure roller 141 away from the die head 130; wherein, the second pressure roller 142 is a metal texture roller.

[0056] Specifically, the texture forming in the double-layer co-extrusion process mainly relies on the extrusion and traction of three pressure rollers (that is, the first pressure roller 141, the second pressure roller 142, and the third pressure roller 143), that is, the designed texture is implemented on the surface of the second pressure roller 142 through the micro-nano laser precision engraving process, and then through the rotation and mutual traction of the three pressure rollers of the first pressure roller 141, the second pressure roller 142, and the third pressure roller 143, the three-dimensional texture imprinting (the texture depth can be designed according to requirements) is completed before the filling layer 10 and the effect layer 20 are completely cooled, and a texture layer 30 is formed on at least one surface. One metal texture roller can serve products of various size forms, realizing the universality of the texture roller mold and greatly improving the production efficiency.

[0057] Preferably, the finished thickness of the decorative panel is adjusted and controlled by the spacing between the three pressure rollers of the first pressure roller 141, the second pressure roller 142, and the third pressure roller 143. The spacing between the pressure rollers is directly proportional to the thickness of the decorative panel material, that is, the larger the spacing, the thicker the overall thickness of the decorative panel. The depth and clarity of the texture will be affected by the spacing, pressure, and temperature between the pressure rollers.

[0058] Preferably, in the conventional process plan, there are many printing processes. The texture needs to be transformed by means of screen printing, transfer printing, and etching. The fine three-dimensional texture requires the superposition of multiple prints, and each printing process has to go through multiple steps such as film, screen exposure, printing, and drying. In the existing PC patch and film laminating solutions, the 30 - time effect of the texture layer is achieved by the superposition of multiple prints after the material is formed, and the etched spraying is achieved by laser precision engraving of the mold before the material is formed. However, one mold corresponds to one object, and the mold universality is poor. On the premise of the one - time forming process characteristics of the present application, in order to achieve multi - level changes in the texture, it is necessary to make changes in the graphic design on the surface of the second pressure roller 142, such as changing the arrangement direction, trend, depth, size, and density of the texture, so as to simulate the texture vision of light and shadow flowing and sparkling waves, forming rich level changes.

[0059] Further, the special equipment further includes: a cooling conveyor belt 150, which is arranged on the side of the pressure roller assembly 140 away from the die head 130; a thickness measuring device 160, which is arranged on the side of the cooling conveyor belt 150 away from the pressure roller assembly 140.

[0060] Specifically, before the filling layer 10 and the effect layer 20 are completely cooled, after the three - dimensional texture stamping is completed at the pressure roller assembly 140, the decorative panel is sent out along the conveying direction to the cooling conveyor belt 150 to complete the material shaping; the thickness measuring device 160 is used to detect the thickness of the decorative panel sent out by the cooling conveyor belt 150. After the thickness detection is completed, a decorative panel with a thickness of 1.5 mm is finally formed.

[0061] Preferably, the special equipment further includes: a punching die 170, an inspection platform 180, and a winding material 190; the punching die 170 is used to cut the prepared decorative panel to control the size of the decorative panel; the inspection platform 180 is used to inspect the cut decorative panel; the winding material 190 is used to store the inspected decorative panel.

[0062] Further, the first extrusion device 110 includes: a first extrusion main machine 111, a first feed inlet 112, a first screw 113, and a first vacuum box 115, and the first extrusion main machine 111, the first feed inlet 112, the first screw 113, and the first vacuum box 115 are connected in sequence; the second extrusion device 120 includes: a second extrusion main machine 121, a second feed inlet 122, a second screw 123, and a second vacuum box 125, and the second extrusion main machine 121, the second feed inlet 122, the second screw 123, and the second vacuum box 125 are connected in sequence; wherein, the first vacuum box 115 and the second vacuum box 125 are connected to the die head 130.

[0063] Specifically, refer to Figure 2, the conventional extrusion process is single-color extrusion, which is completed by the first extrusion main machine 111, the first feeding port 112, the first screw 113 and the first vacuum box 115 of the first extrusion device 110. Both ends of the first screw 113 are respectively connected to the first extrusion main machine 111 and the first vacuum box 115. The first feeding port 112 and the first feeding cylinder 114 are also arranged on the first screw 113; the first base material is fed from the first feeding port 112, heated and liquefied by the first screw 113, and then enters the die head 130 after the vacuum is extracted by the first vacuum box 115. Since there is only one feeding port, only single-color extrusion can be realized.

[0064] Through the improvement of the equipment, the new double-layer co-extrusion process of the present application, such as Figure 3 shown, realizes the transformation and implementation of the household appliance decorative panel at low cost; that is, in the case of setting the first extrusion device 110, a second stroke (that is, the second extrusion device 120) is replicated in the whole process. The feeding process is the same as above. Both ends of the second screw 123 are respectively connected to the second extrusion main machine 121 and the second vacuum box 125. The second feeding port 122 and the second feeding cylinder 124 are also arranged on the second screw 123; the second base material is fed from the second feeding port 122, heated and liquefied by the second screw 123, and then enters the die head 130 after the vacuum is extracted by the second vacuum box 125. After the filling layer 10 and the effect layer 20 are formed, the confluence of the two materials is finally completed at the die head 130, so as to realize double-color co-extrusion.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A decorative panel, characterized in that, The decorative panel includes: a filling layer (10), the filling layer (10) including a first filling surface (11) and a second filling surface (12) arranged oppositely; an effect layer (20), the effect layer (20) including a first effect surface (21) and a second effect surface (22) arranged oppositely, the first effect surface (21) being in contact with the second filling surface (12); wherein, the effect layer (20) and the filling layer (10) are integrally formed by a double-layer co-extrusion process and a texture layer (30) is formed on at least one surface; the surface includes: the first filling surface (11), the second filling surface (12), the first effect surface (21), and the second effect surface (22).

2. The decorative panel according to claim 1, wherein the filling layer (10) is a polymer material layer; the effect layer (20) is a paint-free material layer.

3. The decorative panel according to claim 1, wherein the thickness of the filling layer (10) is D1; the thickness of the effect layer (20) is D2, wherein D1:D2 = 5:

1.

4. The decorative panel according to claim 3, wherein the thickness of the filling layer (10) is 1.25 mm; the thickness of the effect layer (20) is 0.25 mm.

5. A dedicated device for preparing a decorative panel as described in any one of claims 1-4, characterized in that, The special equipment includes: a first extrusion device (110), a first base material forming the filling layer (10) through the first extrusion device (110); a second extrusion device (120), a second base material forming the effect layer (20) through the second extrusion device (120); a die head (130), the die head (130) connecting the first extrusion device (110) and the second extrusion device (120) and being used for realizing the confluence of the filling layer (10) and the effect layer (20); a pressure roller assembly (140), the pressure roller assembly (140) being used for forming the texture layer (30) on at least one of the surfaces; wherein, the first extrusion device (110), the die head (130), and the pressure roller assembly (140) are arranged in sequence along the conveying direction.

6. The dedicated device according to claim 5, characterized in that, The pressure roller assembly (140) includes: a first pressure roller (141), a second pressure roller (142), and a third pressure roller (143) arranged in sequence along the conveying direction, the third pressure roller (143) being arranged on a side of the first pressure roller (141) away from the die head (130); wherein, the second pressure roller (142) is a metal texture roller.

7. The dedicated device according to claim 5, characterized in that, The special equipment further includes: a cooling conveyor belt (150), the cooling conveyor belt (150) being arranged on a side of the pressure roller assembly (140) away from the die head (130); a thickness measuring device (160), the thickness measuring device (160) being arranged on a side of the cooling conveyor belt (150) away from the pressure roller assembly (140).

8. The special equipment according to claim 5, wherein The first extrusion device (110) includes: a first extrusion main machine (111), a first feed inlet (112), a first screw (113), and a first vacuum box (115), and the first extrusion main machine (111), the first feed inlet (112), the first screw (113), and the first vacuum box (115) are connected in sequence; The second extrusion device (120) includes: a second extrusion main machine (121), a second feed inlet (122), a second screw (123), and a second vacuum box (125), and the second extrusion main machine (121), the second feed inlet (122), the second screw (123), and the second vacuum box (125) are connected in sequence; Wherein, the first vacuum box (115) and the second vacuum box (125) are connected to the die head (130).

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