Preparation method of wood grain film and preparation method of texture cover plate

Abstract

The invention relates to the technical field of optical ornaments, and discloses a preparation method of a wood grain film and a preparation method of a texture cover plate, a to-be-sprayed material comprising a plurality of cue balls is provided, each cue ball is designed to comprise a first part and a second part which are connected with each other, and the mass of the first part is smaller than that of the second part; the first part is provided with a first surface serving as a reflecting surface, and the second part is provided with a second surface serving as a refracting surface, so that when the to-be-sprayed material is sprayed on the surface of the base film to prepare the wood grain film, the second part with larger mass is arranged towards the surface of the base film under the action of gravity, and the first part with smaller mass is arranged back to the surface of the base film; therefore, the light in the environment can be reflected by the first surface, and the light emitted by the luminous source is refracted into the cue ball by the second surface and then is emitted from the first surface, so that the light transmittance can be greatly improved, the brightness and the clarity of the decorative effect are improved, the overall attractiveness is facilitated, a driver can accurately read information, and the cue ball is suitable for being widely applied.

Description

Technical Field

[0001] The present invention relates to the technical field of optical accessories, and in particular to a method for preparing a wood grain film and a method for preparing a texture cover plate. Background Art

[0002] Textured cover, as a decorative material specially used in the design of automobile interior space, is widely adopted in many crucial interior parts such as door trim, instrument panel trim, auxiliary instrument panel trim, seat trim and steering wheel wrapping. It can not only give passengers a variety of visual and tactile feelings, such as the coolness of metal texture, the futuristic sense of technological texture and the warmth and naturalness of wood grain, but also become a key element in shaping a variety of different in-car brand images from luxury and elegance to dynamic vitality through rich color matching, pattern design and clever changes in texture, greatly enriching the visual level and emotional expression of the interior space of the car.

[0003] Wood grain film, as an emerging and environmentally friendly decorative film material, can be tightly and firmly attached to a variety of base materials such as metal, plastic, solid wood, etc., with its wide applicability, thus creating a highly simulated imitation wood grain texture cover. However, the wood grain film products currently circulating on the market generally have a defect that cannot be ignored, that is, their light transmittance is relatively limited. This feature makes the decorative effect appear dull and lacks the necessary brightness and clarity, which may adversely affect the overall aesthetics of the car interior. In particular, when the wood grain film needs to be applied to the instrument panel and other parts that need to display patterns, text or lighting effects through light transmission, its low light transmittance often leads to poor display effects of patterns, text or lighting, which not only weakens the expressive tension of decorative art, but may also interfere with the driver's accurate reading of information, thereby posing a certain potential risk to driving safety.

[0004] In view of the above problems, it is particularly urgent and important to optimize and improve the current wood grain film technology to enhance its light transmittance and improve the decorative effect.

[0005] The above information is presented as background information only to assist with understanding the present disclosure and no determination or admission is made as to whether any of the above may be used as prior art with respect to the present disclosure. Summary of the invention

[0006] The present invention provides a method for preparing a wood grain film and a method for preparing a texture cover plate, so as to solve the problems existing in the prior art.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] In a first aspect, the present invention provides a method for preparing a wood grain film, the method comprising:

[0009] Providing a material to be sprayed, wherein the material to be sprayed includes a plurality of mother balls, wherein the mother balls include a first part and a second part connected to each other, wherein the mass of the first part is less than the mass of the second part, wherein the first part has a first surface, and the second part has a second surface disposed opposite to the first surface, wherein the first surface is a reflective surface, and the second surface is a refractive surface;

[0010] providing a basement membrane;

[0011] The material to be sprayed is sprayed onto the surface of the base film by spraying, and the second part with a larger mass is arranged toward the surface of the base film due to gravity, while the first part with a smaller mass is arranged away from the surface of the base film, so as to form an ink layer on the surface of the base film to obtain a wood grain film.

[0012] Furthermore, in the method for preparing the wood grain film, before the step of providing the material to be sprayed, the method further comprises:

[0013] The density of the second part is increased by liquid penetration, so as to increase the mass of the second part.

[0014] Furthermore, in the method for preparing the wood grain film, before the step of providing the material to be sprayed, the method further comprises:

[0015] The density of the second part is increased by ion exchange, so as to increase the mass of the second part.

[0016] Furthermore, in the method for preparing the wood grain film, the reflective surface is a rough surface, and before the step of providing the material to be sprayed, the method further includes:

[0017] The first surface is surface treated by gas contact reaction to obtain the rough reflective surface.

[0018] Furthermore, in the method for preparing the wood grain film, the gas is nitrogen.

[0019] Furthermore, in the method for preparing the wood grain film, the reflective surface is a rough surface, and before the step of providing the material to be sprayed, the method further includes:

[0020] The first surface is surface treated by spraying a material to obtain a rough reflective surface.

[0021] Furthermore, in the method for preparing the wood grain film, the substance is composed of the following raw materials in percentage by mass:

[0022] Methacrylic acid 80%;

[0023] Pentamethylene glycol 13%;

[0024] Cyclobutyl methyl ketone 7%.

[0025] Furthermore, in the method for preparing the wood grain film, the material of the mother ball is divinylbenzene resin.

[0026] Furthermore, in the method for preparing the wood grain film, the refractive surface is a smooth surface, and the refractive index of the mother ball is higher than the refractive index of air and the base film, respectively.

[0027] In a second aspect, the present invention provides a method for preparing a textured cover plate, the method comprising:

[0028] providing a substrate;

[0029] The wood grain film is attached to the surface of the substrate to obtain a textured cover plate with imitation wood grain effect.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] The present invention provides a method for preparing a wood grain film and a method for preparing a textured cover plate. The method provides a material to be sprayed including a plurality of mother balls, and designs the mother ball to include a first part and a second part connected to each other, wherein the mass of the first part is less than the mass of the second part, the first part has a first surface, and the second part has a second surface arranged opposite to the first surface, the first surface is a reflecting surface, and the second surface is a refractive surface, so that when the material to be sprayed is sprayed on the surface of a base film to form an ink layer and then prepare the wood grain film, the second part with a larger mass is arranged toward the surface of the base film due to gravity, and the first part with a smaller mass is arranged away from the surface of the base film, so that the light in the environment can be reflected by the first surface, and the light emitted by the light source can be refracted into the mother ball by the second surface and then emitted from the first surface, so that the light transmittance can be greatly improved, and the brightness and clarity of the decorative effect can be improved, which is beneficial to the overall aesthetics and the driver's accurate reading of information, and is suitable for large-scale promotion and application.

[0032] The present invention has other features and advantages, which will be apparent from or will be described in detail in the accompanying drawings and the following detailed description incorporated herein, which together serve to explain the specific principles of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0034] Figure 1 It is a schematic diagram of a process for preparing a wood grain film provided in Example 1 of the present invention;

[0035] Figure 2 is a schematic structural diagram of the wood grain film mentioned in the first embodiment of the present invention;

[0036] Figure 3 is a schematic structural diagram of the cue ball mentioned in the first embodiment of the present invention;

[0037] Figure 4 It is a schematic flow chart of a method for preparing a textured cover plate provided in the second embodiment of the present invention;

[0038] Figure 5 It is a structural schematic diagram of the texture cover plate mentioned in the second embodiment of the present invention.

[0039] Reference numerals:

[0040] Cue ball 1, first surface 2, second surface 3, base film 4;

[0041] Substrate 100, wood grain film 200. DETAILED DESCRIPTION

[0042] In order to explain in detail the possible application scenarios, technical principles, specific schemes that can be implemented, and the purposes and effects that can be achieved, the following is a detailed description of the specific embodiments listed in conjunction with the accompanying drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0043] Reference to "embodiment" herein means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present application. The term "embodiment" appearing in various places in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or association with other embodiments. In principle, in the present application, as long as there is no technical contradiction or conflict, the various technical features mentioned in the embodiments can be combined in any way to form a corresponding implementable technical solution.

[0044] Unless otherwise defined, the technical terms used in this document have the same meanings as those generally understood by those skilled in the art to which this application belongs; the use of relevant terms in this document is only for describing specific embodiments and is not intended to limit this application.

[0045] In the description of this application, the term "and / or" is an expression used to describe the logical relationship between objects, indicating that three relationships may exist, for example, A and / or B, which means: A exists, B exists, and A and B exist at the same time. In addition, the character " / " in this article generally indicates that the objects before and after are in an "or" logical relationship.

[0046] In the present application, terms such as “first” and “second” are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship of quantity, priority or sequence between these entities or operations.

[0047] Without further limitations, in this application, the words "include", "comprises", "has" or other similar expressions used in the sentences are intended to cover non-exclusive inclusion. These expressions do not exclude the presence of additional elements in the process, method or product including the elements, so that the process, method or product including a series of elements may include not only those limited elements, but also other elements not explicitly listed, or also include elements inherent to such process, method or product.

[0048] In the present application, expressions such as "greater than", "less than", "exceed" and the like are understood to exclude the number itself; expressions such as "above", "below", "within" and the like are understood to include the number itself. In addition, in the description of the embodiments of the present application, "multiple" means more than two (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups", "multiple times", etc., unless otherwise clearly and specifically limited.

[0049] In the description of the embodiments of the present application, space-related expressions used, such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "vertical", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or position relationship based on the orientation or position relationship shown in the specific embodiments or drawings, and are only for the convenience of describing the specific embodiments of the present application or facilitating the reader's understanding, and do not indicate or imply that the referred device or component must have a specific position, a specific orientation, or be constructed or operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0050] Unless otherwise expressly specified or limited, in the description of the embodiments of the present application, the terms such as "install", "connect", "connect", "fix", "set", etc. used should be understood in a broad sense. For example, the "connection" can be a fixed connection, a detachable connection, or an integrated setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For technicians in the technical field to which the present application belongs, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0051] Embodiment 1

[0052] In view of the defects of the above-mentioned prior art, the applicant, based on many years of rich practical experience and professional knowledge in this field, and in conjunction with the application of theory, actively conducts research and innovation in the hope of creating a technology that can solve the defects of the prior art. After continuous research and design, and after repeated trial production and improvement, the present invention with real practical value was finally created.

[0053] Please refer to Figure 1 , is a schematic flow chart of a method for preparing a wood grain film provided in Example 1 of the present invention, and the method is applicable to the scenario of preparing a wood grain film. The method specifically comprises the following steps:

[0054] S101. Provide a material to be sprayed, wherein the material to be sprayed includes a plurality of mother balls, wherein the mother balls include a first part and a second part connected to each other, wherein the mass of the first part is less than the mass of the second part, wherein the first part has a first surface, and the second part has a second surface disposed opposite to the first surface, wherein the first surface is a reflective surface, and the second surface is a refractive surface.

[0055] It should be noted that this step is the key starting point of the preparation process, which involves providing a carefully designed material to be sprayed. The core component of this material is a number of mother balls with special structures and functions (after the mother balls are colored, they become ink molecules). Each mother ball consists of two interconnected but unevenly distributed parts, namely the first part and the second part. This design not only gives the mother balls unique optical properties, but also ensures their orderly layout during the subsequent spraying process.

[0056] Specifically, the cue ball consists of two closely connected parts: the first part and the second part. The two parts are structurally connected to each other, but there are significant differences in quality.

[0057] The mass of the first part is deliberately designed to be smaller than that of the second part. This uneven distribution of mass is the key to achieving orderly placement of the cue balls using the gravity effect.

[0058] The first part has a first surface designed as a reflective surface, which can efficiently reflect light in the environment, so that the light can be effectively reflected when it contacts the cue ball.

[0059] The second part has a second surface disposed opposite to the first surface, and the second surface is designed as a refractive surface, which can capture and guide the light emitted by the light source to be refracted inside the mother ball and then transmitted out, thereby achieving a specific optical effect.

[0060] The design of this optical property enables them to produce unique optical effects when subsequently preparing wood grain films, namely improving light transmittance, enhancing the brightness and clarity of the decorative effect, etc.

[0061] In this step, a sufficient number of specially designed mother balls need to be provided as the material to be sprayed. These mother balls can be prepared by a specific manufacturing process.

[0062] During the preparation process, it is necessary to ensure that the size, shape and mass distribution of the mother ball meet the design requirements to ensure the smooth progress of the subsequent spraying and molding steps.

[0063] In summary, this step is a key step in the preparation of wood grain film. By providing mother balls with special structures and functions as the material to be sprayed, a solid foundation is laid for the subsequent spraying and molding steps. These mother balls not only have unique optical properties, but also can be arranged in an orderly manner under the action of gravity, thus ensuring that the final prepared wood grain film has excellent visual effects and optical properties.

[0064] In one implementation of this embodiment, the material of the mother ball is divinylbenzene resin.

[0065] It should be noted that divinylbenzene resin, as a high-performance thermosetting resin, has excellent chemical stability and thermal stability. It can maintain a stable structure at high temperatures and is not prone to deformation or decomposition, thereby ensuring that the mother ball can maintain stable optical properties during long-term use. In addition, divinylbenzene resin also has good weather resistance and can resist erosion by environmental factors such as ultraviolet rays and humidity, further extending the service life of the wood grain film.

[0066] In terms of optical properties, the refractive index of divinylbenzene resin is higher than that of air, which allows light to be significantly refracted when it enters the mother ball from the air. At the same time, its smooth surface morphology also helps to reduce the scattering and loss of light, and improve the utilization and transmission efficiency of light. This feature makes the mother ball perform well in light conduction and refraction, providing excellent visual effects for the wood grain film.

[0067] In addition, divinylbenzene resin also has good mechanical properties, such as high hardness and toughness, which enables the mother ball to maintain a stable shape and structure when subjected to external forces and is not easily damaged or deformed. This feature ensures that the wood grain film can maintain stable performance during use and improves its reliability and durability.

[0068] In summary, the selection of divinylbenzene resin as the material of the mother ball is not only based on its outstanding performance in optical, thermal, and mechanical properties, but also fully considers the needs of wood grain film in practical applications.

[0069] S102, providing a base film.

[0070] It should be noted that the base film, in short, is a thin film used as a base material. In the preparation process of the wood grain film, the base film plays a supporting, protective and load-bearing role. It provides the necessary strength and toughness to ensure that the wood grain film can maintain structural integrity and stability during processing, transportation and use. At the same time, the surface characteristics of the base film also directly affect the adhesion effect of the ink layer and the film quality.

[0071] Among many base film materials, polyvinyl chloride (PVC) has become the first choice for wood grain film preparation due to its unique performance advantages. PVC is a widely used thermoplastic with excellent physical properties, chemical stability and processing performance.

[0072] When providing the base film, it is necessary to ensure that it meets the following requirements:

[0073] Dimensional stability: The size of the base film should remain stable to avoid deformation or shrinkage due to changes in environmental factors such as temperature and humidity.

[0074] Surface quality: The surface of the base film should be flat and smooth, without stains, scratches, bubbles and other defects to ensure uniform adhesion of the ink layer or other decorative materials.

[0075] Thickness uniformity: The thickness of the base film should be kept consistent to avoid cracks or breaks in the wood grain film during processing or use due to uneven thickness.

[0076] Environmental performance: The base film should comply with relevant environmental standards and contain no harmful substances to ensure the safe use of the wood grain film.

[0077] In summary, the base film provided in this step provides a solid foundation for the preparation of the wood grain film with its excellent physical properties, chemical stability and processing performance. By carefully selecting and preparing the base film, it can be ensured that the wood grain film maintains excellent performance and quality during subsequent processing and use.

[0078] S103, spraying the material to be sprayed onto the surface of the base film by spraying, the second part with a larger mass is arranged toward the surface of the base film due to gravity, and the first part with a smaller mass is arranged away from the surface of the base film, so as to form an ink layer on the surface of the base film to obtain a wood grain film.

[0079] It should be noted that this step is a crucial link, which involves applying the carefully designed spraying material evenly to the surface of the base film through spraying technology. This step requires not only precise technical operation, but also a deep understanding of material properties and gravity effects to ensure the quality and effect of the final product.

[0080] During the spraying process, due to the effect of gravity, the second part with a larger mass will naturally face the surface of the base film, while the first part with a smaller mass will face away from the surface of the base film. This orderly arrangement not only ensures the stable attachment of the mother ball to the base film, but also makes the final ink layer have a unique optical effect, that is, the light in the environment is reflected by the first surface, and the light emitted by the light source is refracted into the mother ball by the second surface and then emitted from the first surface, which greatly improves the light transmittance and improves the brightness and clarity of the decorative effect.

[0081] Please refer to Figure 2-3 The prepared wood grain film is as follows Figure 2 As shown, Figure 2 The mother ball 1 and the base film 4 are included; the mother ball 1 after the surface treatment is as follows Figure 3 As shown, Figure 3 The device comprises a mother ball 1, a first surface 2 and a second surface 3.

[0082] It is understood that it is crucial to select the appropriate spraying equipment according to the characteristics of the material to be sprayed and the type of base film. Commonly used spraying equipment includes air spray guns, high-pressure airless sprayers, etc., which can ensure that the material to be sprayed is applied to the base film surface in a uniform and continuous manner.

[0083] Spraying parameters include spraying pressure, spraying distance, spraying speed, etc. The setting of these parameters will directly affect the spraying effect and the uniformity of the ink layer. By accurately adjusting these parameters, it can be ensured that the material to be sprayed is sprayed onto the base film in the best way.

[0084] The spraying environment also has an important impact on the spraying effect. During the spraying process, it is necessary to maintain appropriate temperature, humidity and cleanliness to avoid spraying defects caused by environmental factors.

[0085] After spraying, the mother ball in the spraying material will form a uniform ink layer on the surface of the base film. This ink layer not only has a unique optical effect, but also protects the base film from erosion by the external environment. With the completion of the spraying process, the wood grain film is born. At this point, the wood grain film has basic physical properties and decorative effects, providing a solid foundation for subsequent processing and use.

[0086] After this step is completed, the wood grain film needs to be quality monitored and processed later. Quality monitoring includes testing the thickness, uniformity, glossiness and other indicators of the wood grain film to ensure that it meets the design requirements. Subsequent processing may include drying, curing, cutting, packaging and other steps to meet the use requirements of the final product.

[0087] In summary, this step is a key link in the preparation process of wood grain film. By precisely controlling the spraying process and making full use of the characteristics of the material to be sprayed and the gravity effect, a wood grain film with unique optical effects and excellent physical properties can be prepared. The successful implementation of this step provides a solid foundation for subsequent processing and use, and also lays a solid foundation for the wide application of wood grain film in the field of decoration.

[0088] In one implementation of this embodiment, before step S101, the method may further include pre-processing steps of the cue ball, which have a crucial impact on the performance and quality of the final product.

[0089] In one aspect, the density of the second portion of the mother ball can be increased by liquid infiltration to increase the mass of the second portion.

[0090] Specifically, the implementation of this step is to infiltrate the second part through a specific liquid medium, such as some high-density solvents or solutions. During this process, the liquid molecules will penetrate into the microstructure of the second part, filling the pores and gaps inside it, thereby effectively increasing its overall density. As the density increases, the mass of the second part also increases accordingly, laying a solid foundation for the subsequent use of gravity effects and the formation of the ink layer.

[0091] On the other hand, the density of the second portion in the mother ball is increased by ion exchange to increase the mass of the second portion.

[0092] Specifically, the implementation of this step is based on the basic principle of ion exchange, that is, part of the ions in the second part are replaced with ions with higher density through a specific ion exchange resin or solution. With the introduction of high-density ions, the microstructure of the second part is adjusted, and its overall density is improved, thereby achieving an increase in mass. Similarly, this processing step not only helps to effectively utilize the subsequent gravity effect, but also improves the chemical stability and durability of the second part to a certain extent.

[0093] In summary, the method effectively improves the density and quality of the second part by implementing pre-treatment steps such as liquid penetration or ion exchange on the mother ball before providing the material to be sprayed. The implementation of these pre-treatment steps provides a solid foundation for the subsequent utilization of gravity effect and the formation of the ink layer, and also provides a strong guarantee for the performance and quality of the final product.

[0094] In one implementation of this embodiment, the reflective surface is a rough surface, and before the step of providing the material to be sprayed, the method further includes:

[0095] The first surface is surface treated by gas contact reaction to obtain the rough reflective surface.

[0096] It should be noted that the rough reflective surface can produce more complex and diverse reflection effects when exposed to light compared to the smooth surface. This scattered reflection not only enhances the interaction between light and the material surface, but also further enriches the visual layering, allowing the wood grain film to present a delicate wood grain texture while also showing more vivid and three-dimensional light and shadow changes.

[0097] In addition, the rough reflective surface can also help reduce the occurrence of glare, which is crucial to improving visual comfort during driving. When drivers face strong sunlight, the rough reflective surface can effectively disperse the light and avoid discomfort or safety hazards caused by direct light.

[0098] In summary, designing the reflective surface as a rough surface not only improves the decorative effect of the wood grain film, but also enhances its practicality and safety in actual applications.

[0099] In one implementation of this embodiment, a novel method is explored to prepare the rough surface. The core of this method is to use a smooth first surface to react with a specific gas, and through this chemical reaction process, the originally smooth surface is transformed into a rough surface with a specific roughness.

[0100] This chemical reaction-induced surface roughening process not only provides a new way to prepare rough surfaces, but also gives the rough surfaces unique physical and chemical properties. Due to the interaction between the gas and the smooth surface, the rough surface formed after the reaction often has a more uniform roughness distribution and a richer microstructure. These properties enable the rough surface to show more delicate and rich light and shadow effects under light, further enhancing the visual beauty of the wood grain film.

[0101] At the same time, the rough surface prepared by this chemical reaction also has good durability and stability. Since the rough structure is directly embedded in the material surface through chemical reaction, it is less susceptible to wear or damage compared to other physical or mechanical treatment methods, thus ensuring the decorative effect and performance stability of the wood grain film during long-term use.

[0102] In summary, the method of preparing a rough surface by reacting a smooth first surface with a gas not only provides more possibilities for the design and production of wood grain films, but also further improves its comprehensive performance in practical applications.

[0103] In one implementation of this embodiment, nitrogen is selected as the gas for contact reaction with the smooth surface. This selection is not accidental, but is based on the unique chemical properties and reaction characteristics of nitrogen.

[0104] Nitrogen is an inert gas and is usually not easy to react chemically with other substances. However, under certain conditions, such as high temperature, high pressure or the presence of a catalyst, nitrogen can react chemically with the surface of certain materials to form unique chemical bonds and surface structures. In this embodiment, the reactivity of nitrogen with smooth surfaces under certain conditions is utilized. By precisely controlling the reaction conditions, nitrogen reacts with the smooth surface, thereby forming a layer of microstructure with a specific roughness on the surface.

[0105] This nitrogen reaction-induced surface roughening process not only provides a new method for preparing rough surfaces, but also gives the rough surfaces unique properties. Since the chemical bonds formed between nitrogen and the material surface are usually stable, this rough surface has excellent durability and wear resistance. At the same time, nitrogen reaction may also introduce some special chemical groups or functions, which may further affect the optical properties, weather resistance or compatibility of the wood grain film with other materials.

[0106] In summary, by selecting nitrogen as the gas for contact reaction with the smooth surface, it not only provides a new idea and method for the design and production of wood grain films, but also further expands the application field and performance range of wood grain films.

[0107] In one implementation of this embodiment, in addition to using a gas reaction method to prepare a rough surface, a spraying technique can also be used to prepare a rough surface. Specifically, before the step of providing the material to be sprayed, the method further includes:

[0108] The first surface is surface treated by spraying a material to obtain a rough reflective surface.

[0109] It should be noted that this method involves uniformly spraying a layer of a specific substance on a smooth first surface, and through the deposition and curing process of the layer of substance, a surface layer with a rough structure is formed on the smooth surface.

[0110] The choice of spray material is crucial. It must not only form a good bond with the smooth surface, but also form a surface with the desired roughness after curing. To achieve this goal, granular substances with a specific particle size distribution, resins, polymers or other materials that can form a rough surface may be selected. During the spraying process, these substances are evenly sprayed onto the smooth surface and form a dense, rough-structured coating on the surface through processes such as heating, drying or natural curing.

[0111] The roughened surface produced by this spraying method has many advantages. First, it can adjust the type and particle size distribution of the sprayed material as needed, thereby accurately controlling the morphology and roughness of the roughened surface. Second, the spraying process is simple and efficient, suitable for large-scale production. In addition, since the bonding force between the sprayed material and the smooth surface is usually strong, this roughened surface has good durability and wear resistance.

[0112] In summary, the method of preparing a rough surface by spraying a specific substance on a smooth surface not only provides a simple and efficient preparation method, but also enables the customization of surface structures with different roughness and morphology according to specific needs, thereby further enriching the design and application scope of wood grain films.

[0113] In one embodiment of this example, the precise formula of the substance used for spraying to form a rough surface is described in detail. The substance is carefully prepared from the following raw materials in precise mass percentages:

[0114] Methacrylic acid, C 4 H 6 O 2 , accounting for up to 80%. As an important organic compound, methacrylic acid has excellent chemical stability and reactivity, and is a key raw material for the preparation of high-performance polymers and coating materials. In this formula, the high content of methacrylic acid ensures that the prepared coating has excellent adhesion and durability, and also helps to form a uniform and dense rough structure.

[0115] Pentamethylene glycol, C 5 H 12 O 2 , accounting for 13%. As a diol, pentamethylene glycol has good solubility and reactivity, and can copolymerize with monomers such as methacrylic acid to enhance the flexibility and weather resistance of the coating. In the formula, the addition of pentamethylene glycol helps to adjust the hardness and elasticity of the coating, making it more adaptable to the needs of different application scenarios.

[0116] Cyclobutyl methyl ketone, C 6 H 10 O, accounting for 7%. As an organic solvent, cyclobutyl methyl ketone has low volatility and good solubility, and can effectively dissolve and disperse raw materials such as methacrylic acid and pentamethylene glycol to form a uniform spray solution. At the same time, the addition of cyclobutyl methyl ketone also helps to adjust the drying speed and curing process of the coating, thereby ensuring that the prepared rough surface has ideal morphology and performance.

[0117] In summary, by precisely controlling the mass percentages of raw materials such as methacrylic acid, pentamethylene glycol and cyclobutyl methyl ketone, a spray material with excellent performance can be successfully prepared. After spraying, the material can form a surface layer with a specific roughness, which not only enhances the visual effect and tactile experience of the wood grain film, but also improves its durability and wear resistance.

[0118] In one implementation of this embodiment, the refractive surface is a smooth surface, and the refractive index of the mother ball is higher than the refractive index of air and the base film.

[0119] Specifically, the refractive surface is the interface when light enters another medium from one medium, and its surface morphology has a crucial influence on the propagation path and refraction effect of the light. In this embodiment, the refractive surface is designed to be a smooth surface, which allows the light to undergo a more regular and controllable refraction phenomenon when it contacts the refractive surface.

[0120] At the same time, in order to ensure that light can smoothly enter the interior of the mother ball from the medium such as air or the basement membrane, a mother ball material with a refractive index higher than that of air and the basement membrane is specially selected. In fact, in order to allow light to better penetrate into the mother ball, it is usually necessary that the refractive index of the mother ball material is slightly higher than that of air (the refractive index of air is approximately 1) and the basement membrane. In this way, when light is obliquely incident from air and / or the basement membrane to the refractive surface of the mother ball, according to Snell's Law, the light will be deflected in the normal direction, that is, the shell refracts into the interior of the mother ball.

[0121] In addition, the smooth and high refractive index refractive surface can also help reduce the scattering and loss of light during the propagation process, thereby improving the utilization and transmission efficiency of light. This feature is crucial to improving the transmittance and clarity of the wood grain film. It can not only enhance the visual effect of the wood grain film, but also ensure that the driver can clearly read the screen information during driving, thereby improving driving safety.

[0122] In summary, by designing the refractive surface to be a smooth surface and selecting a mother ball material with a higher refractive index than air, an efficient and reliable light refraction mechanism is successfully achieved.

[0123] Although the terms such as basement membrane and mother ball are used more frequently in this application, the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional restrictions is contrary to the spirit of the present invention.

[0124] The method for preparing a wood grain film provided by an embodiment of the present invention provides a material to be sprayed including a plurality of mother balls, and designs the mother ball to include a first part and a second part connected to each other, the mass of the first part is less than the mass of the second part, the first part has a first surface, and the second part has a second surface arranged opposite to the first surface, the first surface is a reflective surface, and the second surface is a refractive surface, so that when the material to be sprayed is sprayed on the surface of the base film to form an ink layer and then prepare the wood grain film, the second part with a larger mass is arranged toward the surface of the base film due to gravity, and the first part with a smaller mass is arranged opposite to the surface of the base film, so that the light in the environment can be reflected by the first surface, and the light emitted by the light source can be refracted into the mother ball by the second surface and then emitted from the first surface. These designs significantly improve the light transmission efficiency, greatly enhance the brightness and clarity of the decorative effect, thereby not only optimizing the overall aesthetic perception, but also having a positive impact on improving the driver's recognition accuracy and reading efficiency of information. In view of its significant advantages in improving visual experience and information readability, the embodiment of the present invention has great potential for wide promotion and application, and is suitable for a variety of occasions and needs.

[0125] Embodiment 2

[0126] Please refer to Figure 4 , is a schematic flow chart of a method for preparing a textured cover plate provided by an embodiment of the present invention, the method comprising the following steps:

[0127] S201, providing a substrate.

[0128] It should be noted that as the first step in preparing the texture cover, providing a substrate is indispensable. The choice of substrate is crucial, as it not only determines the physical properties and durability of the final product, but also affects the lamination effect and overall aesthetics of the wood grain film. Common substrate materials include metal, plastic, wood, etc. The specific choice needs to be weighed according to the actual application scenario and needs.

[0129] In the process of providing the base, the base must also be pre-treated, such as cleaning, polishing, degreasing, etc., to ensure the flatness and cleanliness of the base surface, laying a solid foundation for the subsequent wood grain film bonding.

[0130] S202, attaching a wood grain film to the surface of the substrate to obtain a textured cover plate with an imitation wood grain effect; the wood grain film is prepared according to the preparation method of the wood grain film provided in the first embodiment above.

[0131] It should be noted that after the substrate is ready, the next key step is to apply the wood grain film on its surface. As a material with unique texture and color, the wood grain film can give the substrate a wood grain effect, thereby enhancing the visual effect and decorative value of the product.

[0132] When applying wood grain film, it is necessary to ensure close fit between the film and the substrate to avoid defects such as bubbles and wrinkles. To this end, professional laminating tools and techniques, such as heat pressing laminating and vacuum laminating, can be used to ensure the best laminating effect.

[0133] At the same time, the texture cover board needs to be cured to improve the bonding strength and overall stability between the wood grain film and the substrate. The curing method can be selected according to the specific material and process requirements, such as thermal curing, ultraviolet curing, etc.

[0134] Please refer to Figure 5 The textured cover plate prepared is as follows Figure 5 As shown, Figure 5 The invention comprises a substrate 100 and a wood grain film 200 .

[0135] The method for preparing a textured cover plate provided by the embodiment of the present invention has significant advantages and broad application prospects. The textured cover plate prepared by the method not only has a unique texture and visual effect, but also has excellent physical properties and durability. In addition, the method also has high production efficiency and low production cost, which is conducive to large-scale production and application.

[0136] In terms of application fields, the textured cover plate prepared by this method can be widely used in multiple fields such as automobiles, furniture, construction, electronics, etc., providing unique decorative effects and added value for products. At the same time, as people's requirements for home environment and product quality continue to increase, the textured cover plate prepared by this method will have a broader market prospect and application space.

[0137] In summary, the texture cover plate preparation method provided in the embodiment of the present invention is an efficient, economical and practical preparation method, which has significant technical advantages and broad application prospects.

[0138] Finally, it should be noted that although the above embodiments have been described in the specification and drawings of this application, this does not limit the scope of patent protection of this application. All technical solutions generated by replacing or modifying equivalent structures or equivalent processes based on the essential concept of this application using the contents recorded in the specification and drawings of this application, as well as directly or indirectly implementing the technical solutions of the above embodiments in other related technical fields, are included in the scope of patent protection of this application.

Claims

1. A method for preparing a wood grain film, characterized in that: The method comprises: Providing a material to be sprayed, wherein the material to be sprayed includes a plurality of mother balls, wherein the mother balls include a first part and a second part connected to each other, wherein the mass of the first part is less than the mass of the second part, wherein the first part has a first surface, and the second part has a second surface disposed opposite to the first surface, wherein the first surface is a reflective surface, and the second surface is a refractive surface; providing a basement membrane; The material to be sprayed is sprayed onto the surface of the base film by spraying, and the second part with a larger mass is arranged toward the surface of the base film due to gravity, while the first part with a smaller mass is arranged away from the surface of the base film, so as to form an ink layer on the surface of the base film to obtain a wood grain film.

2. The method for preparing a wood grain film according to claim 1, characterized in that: Before the step of providing the material to be sprayed, the method further comprises: The density of the second part is increased by liquid penetration, so as to increase the mass of the second part.

3. The method for preparing a wood grain film according to claim 1, characterized in that: Before the step of providing the material to be sprayed, the method further comprises: The density of the second part is increased by ion exchange, so as to increase the mass of the second part.

4. The method for preparing a wood grain film according to claim 1, characterized in that: The reflective surface is a rough surface. Before the step of providing the material to be sprayed, the method further includes: The first surface is surface treated by gas contact reaction to obtain the rough reflective surface.

5. The method for preparing a wood grain film according to claim 4, characterized in that: The gas is nitrogen.

6. The method for preparing a wood grain film according to claim 1, characterized in that: The reflective surface is a rough surface. Before the step of providing the material to be sprayed, the method further includes: The first surface is surface treated by spraying a material to obtain a rough reflective surface.

7. The method for preparing a wood grain film according to claim 6, characterized in that: The substance is composed of the following raw materials in percentage by weight composition: Methacrylic acid 80%; Pentamethylene glycol 13%; Cyclobutyl methyl ketone 7%.

8. The method for preparing a wood grain film according to claim 1, characterized in that: The material of the mother ball is divinylbenzene resin.

9. The method for preparing a wood grain film according to claim 1, characterized in that: The refractive surface is a smooth surface, and the refractive index of the mother ball is higher than the refractive index of air and the base film.

10. A method for preparing a textured cover plate, characterized in that: The method comprises: providing a substrate; A wood grain film is attached to the surface of the substrate to obtain a textured cover plate with an imitation wood grain effect; the wood grain film is prepared according to the method for preparing a wood grain film according to any one of claims 1 to 9.

Images