A stone plastic board based on embossed gold stamping transfer film

Abstract

This utility model discloses a stone-plastic composite board based on an embossed gold-plated transfer film, comprising a stone-plastic composite board, with a first transfer film and a second transfer film respectively heat-transferred onto the surface of the stone-plastic composite board. The first transfer film includes a first base film layer, a first release layer, a pattern layer, and a first adhesive layer stacked together. The second transfer film is a hot stamping film, which includes a second base film layer, a second release layer, an aluminum plating layer, and a second adhesive layer. The hot stamping film is pressed by the concave and convex areas of an embossing roller to form a contact portion between the second adhesive layer and the aluminum plating layer, and a non-contact portion between the aluminum plating layer and the second adhesive layer. The release layer and the aluminum plating layer corresponding to the contact portion of the second adhesive layer and the aluminum plating layer form an embossed gold-plated pattern layer. This utility model, through the secondary transfer technology of the first and second transfer films combined with the hot stamping film pressed by the embossing roller to form an embossed gold-plated pattern layer, realizes the application of embossed gold-plated patterns in the field of heat transfer technology for stone-plastic composite boards, and improves the color and material effect of the stone-plastic composite board.

Description

Technical Field

[0001] This utility model relates to the field of stone-plastic composite board technology, and in particular to a stone-plastic composite board based on embossed gilding transfer film. Background Technology

[0002] The surface transfer printing technology of stone-plastic composite (SPC) panels mainly relies on transfer film. As an important pattern transfer printing material, transfer film is widely used in the field of architectural decorative panels due to its ease of operation and wide range of applications. With the deepening promotion of green and environmentally friendly concepts, traditional building materials such as marble and painted wood panels are gradually being replaced by SPC panels with transfer film. However, existing SPC panel products with transfer film still have significant shortcomings in terms of visual effect and texture. Especially for decorative effects with a metallic feel, current hot stamping transfer films on the market generally use a whole-surface hot stamping process, resulting in a lack of three-dimensionality and layering, and failing to achieve personalized pattern effects. This whole-surface hot stamping treatment not only wastes materials but also fails to meet the aesthetic and personalized demands of modern architectural decoration. Furthermore, the traditional bonding method between hot stamping film and SPC panel is singular, unable to create a three-dimensional embossed effect, limiting its application in high-end decoration fields. To address these issues, there is an urgent need to develop a SPC panel product based on transfer film that can achieve an embossed gilding effect to meet the market's demand for high-quality decorative materials. To address the aforementioned issues, existing technologies urgently need improvement. Utility Model Content

[0003] The purpose of this application is to provide a stone-plastic panel based on embossed gold transfer film, which has the advantages of enhancing the three-dimensional sense of layering and realizing the personalized pattern effect of embossed gold.

[0004] This application provides a stone-plastic composite board based on an embossed gold-plated transfer film, comprising a stone-plastic composite board, wherein a first transfer film and a second transfer film are respectively heat-transferred onto the surface of the stone-plastic composite board. The first transfer film includes a first base film layer, a first release layer, a pattern layer, and a first adhesive layer. The second transfer film is a hot stamping film, which includes a second base film layer, a second release layer, an aluminum plating layer, and a second adhesive layer. The hot stamping film is pressed by the concave and convex areas of an embossing roller to form a contact portion between the second adhesive layer and the aluminum plating layer and a non-contact portion between the aluminum plating layer and the second adhesive layer. The release layer and the aluminum plating layer corresponding to the contact portion of the second adhesive layer and the aluminum plating layer form an embossed gold-plated pattern layer. The non-contact portion of the second adhesive layer and the aluminum plating layer detach from the second base film layer, and the pattern layer and the embossed gold-plated pattern layer are transferred onto the surface of the stone-plastic composite board. This invention utilizes a secondary transfer technique combining a first transfer film and a second transfer film, along with a hot stamping film applied by an embossing roller, to form an embossed and gilded pattern layer. This enables the application of gilded patterns in the field of thermal transfer technology for stone-plastic composite boards, thereby improving the color and material effects of the stone-plastic composite boards.

[0005] Furthermore, this application also proposes that a color layer be provided between the release layer and the aluminum plating layer.

[0006] Furthermore, this application also proposes that the overall thickness of the hot stamping film is 10-30μm.

[0007] Furthermore, this application also proposes that the horizontal surface shape of the part where the adhesive layer contacts the hot stamping film is a rock texture or wood grain.

[0008] As can be seen from the above, the stone plastic board based on embossed gold transfer film provided in this application forms a partially bonded embossed gold pattern layer through the synergistic effect of the adhesive layer and the embossing roller, so that the aluminum plating layer in the non-contact area is completely detached. While retaining the metallic texture, it forms a three-dimensional embossed effect, which has the advantages of enhancing the decorative sense and realizing personalized pattern customization of stone plastic board. Attached Figure Description

[0009] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0010] Figure 1 is a schematic cross-sectional view of a stone-plastic board based on an embossed gold transfer film according to this utility model.

[0011] Figure 2 is a cross-sectional view of the first transfer film and the second transfer film in this utility model. Detailed Implementation

[0012] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0013] In existing technologies, stone-plastic composite panels are gradually replacing traditional marble and painted wood panels, but the requirements for the decorative effect of stone-plastic composite panels are increasing. Current hot-stamping transfer printing on stone-plastic composite panels uses a full-surface adhesion method, which cannot create personalized patterns, resulting in a lack of three-dimensional texture in the transferred panels and failing to meet the aesthetic demands of modern architecture.

[0014] To address the aforementioned issues, a process is needed to create a localized gilding effect on the surface of SPC panels. Analysis revealed that traditional full-surface hot stamping cannot preserve blank areas in non-contact regions, resulting in a monotonous pattern. Therefore, a selective bonding technique is considered, using a secondary transfer process combined with embossing tools to control the contact area between the adhesive layer and the hot stamping film, thereby creating a raised texture during the transfer process.

[0015] Therefore, as Figure 1-2 As shown, a stone-plastic composite board based on an embossed gold-plated transfer film includes a stone-plastic composite board 8. A first transfer film and a second transfer film are heat-transferred onto the surface of the stone-plastic composite board 8. The first transfer film includes a first base film layer 1, a first release layer 9, a pattern layer 2, and a first adhesive layer 10, all stacked together. The second transfer film is a hot stamping film, which includes a second base film layer 3, a second release layer 4, an aluminum plating layer 6, and a second adhesive layer 7. The hot stamping film is pressed by an embossing roller through its raised and recessed areas to form a contact portion between the second adhesive layer 7 and the aluminum plating layer 6, and a non-contact portion 11 between the aluminum plating layer and the second adhesive layer. The release layer corresponding to the contact portion between the second adhesive layer and the aluminum plating layer, and the aluminum plating layer form an embossed gold-plated pattern layer. The non-contact portion between the second adhesive layer and the aluminum plating layer detaches from the second base film layer, and the pattern layer and the embossed gold-plated pattern layer are transferred to the surface of the stone-plastic composite board.

[0016] The second adhesive layer 7 refers to the adhesive layer covering the surface of the first release layer 9 and the pattern layer 2. It can be achieved using UV-curable adhesive, and its adhesive strength needs to be adapted to the pressure parameters of the embossing roller. This layer forms a differentiated bonding interface by interacting with the concave and convex areas of the embossing roller. The embossing roller is a metal roller with a textured surface, which can be manufactured using laser engraving or chemical etching processes, and its depth can be controlled within the range of 10 to 100 micrometers. This tool uses mechanical pressure to press a localized area of ​​the hot stamping film into the second adhesive layer 7 to achieve selective adhesion. The hot stamping film includes a second base film layer 3, a second release layer 4, and an aluminum plating layer. The second base film layer is, for example, made of polyester film, the release layer is made of a wax coating, and the aluminum plating layer is formed by vacuum evaporation. This layered structure allows the release layer and the base film layer to completely separate when the hot stamping film is under pressure.

[0017] Specifically, after the second adhesive layer 7 is applied to the surface of the first release layer 9 and the pattern layer 2, an embossing roller presses the hot stamping film onto the second adhesive layer 7. The raised areas of the roller press the aluminum plating layer and the second adhesive layer 7 into the adhesive layer to form an adhesion, while the recessed areas keep the second adhesive layer 7 separated from the hot stamping film. After the pressing is completed, the second base film layer 3 peels off the aluminum plating layer from the unbonded areas, leaving only the aluminum plating layer in the contact areas to form the gilding pattern. Then, the first base film layer 1 is detached from the pattern layer and directly heat-transferred to the surface of the stone-plastic composite board, giving the stone-plastic composite board an embossed gilding effect.

[0018] Compared to existing technologies, traditional hot stamping processes for stone-plastic composite panels require covering the entire surface with an aluminum plating layer, which cannot create a three-dimensional, embossed effect. This solution, through the combination of embossing rollers and adhesive layers, allows for the selective retention of the aluminum plating layer, preserving the hot stamping effect while creating a decorative structure for the stone-plastic composite panel with textural depth.

[0019] Through the above technical solution, this application can transfer embossed gold patterns onto the surface of stone-plastic composite panels, solving the problem of monotonous decorative effects of traditional stone-plastic composite panels. The synergistic effect of the adhesive layer and the embossing roller ensures precise positioning of the aluminum plating layer, and the resulting raised gold patterns enhance the decorative layers of the stone-plastic composite panel surface, meeting the needs of modern architecture for personalized decoration.

[0020] This application further proposes that a color layer 5 be provided between the release layer 4 and the aluminum plating layer 6.

[0021] The color layer refers to the coloring material layer placed between the release layer and the aluminized layer. It can be achieved using ink printing or coating processes, such as uniformly applying colored ink to the surface of the release layer using a gravure printing press. By superimposing the color layer onto the aluminized layer, a composite visual effect combining with the metallic luster can be formed.

[0022] Specifically, during the embossing roller's pressure application, the adhesive layer, color layer, and aluminum plating layer simultaneously transfer to the base film at the contact area with the hot stamping film. When the embossing roller's textured surface acts on the hot stamping film, the color layer forms a colored pattern layer on the metal substrate of the aluminum plating layer. Areas not bonded by the adhesive layer retain the integrity of the base film layer, ultimately forming an embossed gilded pattern with a colored metallic texture.

[0023] Compared to existing technologies, traditional hot stamping foil relies solely on the aluminum plating layer to present a single metallic color. This solution, however, adds a color layer beneath the aluminum plating layer, allowing the embossed pattern to simultaneously display metallic luster and colorful textures. This structure overcomes the technical limitations of traditional hot stamping foil's insufficient color expressiveness.

[0024] Through the above technical solution, this application enables the transfer film to overlay multiple color effects while retaining the metallic texture, effectively enhancing the color gradation of decorative patterns. The composite structure of the color layer and the aluminum plating layer can create complex visual effects such as antique bronze and gradient gilding, meeting the demand for personalized decoration in building materials.

[0025] This application further proposes that the overall thickness of the hot stamping film is 10-30μm.

[0026] The overall thickness of the hot stamping film refers to the total superimposed thickness of the second base film layer 3, the second release layer 4, the aluminum plating layer, and the color layer. This thickness can be achieved by adjusting the coating process of each layer. For example, the thickness of the second base film layer can be controlled at 10-25 μm, the thickness of the second release layer at 1-5 μm, and the thickness of the aluminum plating layer at 0.5-2 μm. This thickness range balances the flexibility and structural strength of the hot stamping film during the embossing process, preventing breakage due to excessive thinness or affecting embossing accuracy due to excessive thickness.

[0027] Specifically, when the overall thickness of the hot stamping film is limited to 10-30μm, the second base film layer can be made of polyester film as a support carrier, the second release layer is made of wax or silicone oil coating, and the aluminum plating layer is formed by vacuum plating process. During the embossing roller pressure process, the hot stamping film within this thickness range can withstand the roller pressure to effectively bond the adhesive layer and the release layer, while maintaining sufficient rigidity in non-contact areas to achieve complete peeling of the base film layer from the base film.

[0028] Compared to existing technologies, traditional hot stamping films typically use a single thickness standard. For example, films thinner than 10μm are prone to wrinkling or tearing during the embossing process, while films thicker than 30μm result in incomplete peeling of the base film after transfer, leaving residual fragments that affect surface smoothness. This application, by limiting the thickness range, avoids embossing defects while ensuring the clarity of the pattern edges after transfer.

[0029] Through the above technical solution, this application can achieve stable separation performance of hot stamping film in the embossing and gilding transfer process, ensuring a clear boundary between the embossed area and the non-embossed area, while avoiding transfer failure or surface defects caused by the film layer being too thin or too thick.

[0030] This application further proposes that the horizontal surface shape of the part where the adhesive layer contacts the hot stamping film is a rock texture or wood grain.

[0031] The horizontal shape of the contact area between the adhesive layer and the hot stamping film refers to the uneven distribution pattern formed on the adhesive layer surface after pressure is applied by an embossing roller. This can be achieved by pre-forming a specific textured adhesive layer on the base film surface using gravure printing or laser engraving. This shape determines the final pattern outline transferred from the hot stamping film onto the substrate. The rock texture refers to a combination of continuous or discontinuous lines simulating the cracks or granular texture of natural stone. This can be achieved by using a CNC engraving machine to process alternating deep and shallow grooves on the adhesive layer surface. The wood grain refers to a curved texture simulating the growth rings or fiber direction of wood. This can be achieved by using a hot-pressing mold to form wavy or forked patterns on the adhesive layer surface.

[0032] Specifically, when the adhesive layer is pressed by the embossing roller, the pre-formed rock or wood grain patterns on its surface come into contact with the release layer and aluminum plating layer of the hot stamping film. Through hot pressing, the adhesive layer and the release layer are bonded together, while the areas not covered by adhesive lack adhesion, causing the base film layer to separate from the base film. Thus, the hot stamping film only forms a metallic embossed gold pattern in the areas corresponding to the adhesive layer patterns, while the remaining areas retain the original color of the substrate or the base film's background color.

[0033] Compared to existing technologies, traditional hot stamping films can only achieve a single-plane hot stamping effect. However, this solution, through the control of specific textures on the adhesive layer surface, allows the substrate surface after transfer to simultaneously present a composite visual effect of metallic texture and natural grain. The problem of existing technologies failing to create localized patterns with full-surface hot stamping films is solved in this solution by using differentiated bonding with rock or wood grain textures.

[0034] Through the above technical solutions, this application can create a three-dimensional, layered gilded decorative effect on the surface of substrates such as stone-plastic panels. For example, a metallic rock texture can be superimposed on a wood-grain substrate, or an antique bronze wood grain can be superimposed on a stone-textured substrate, thereby meeting the demand of building decoration materials for personalized appearance.

[0035] In this application, the heat transfer process refers to a processing method that transfers the pattern layer on the transfer film to the surface of the stone-plastic composite board by heating and pressurizing. Specifically, it can be achieved by applying pressure with a hot roller within a temperature range of 130-180℃. This process utilizes the temperature resistance characteristics of the transfer film to ensure that the adhesive layer forms a stable bond with the surface of the stone-plastic composite board after being heated, while maintaining the three-dimensional shape of the embossed and gilded pattern.

[0036] Specifically, after the transfer film is laminated with the stone-plastic composite board in the heat transfer equipment, temperature and pressure are applied through hot rollers. During this process, the base film maintains dimensional stability after being heated, preventing pattern misalignment due to thermal expansion. After the adhesive layer is activated by heat, it forms a chemical bond with the surface of the stone-plastic composite board. At the same time, the concave and convex areas formed by the embossing rollers transfer the aluminum plating layer according to the predetermined pattern, ultimately forming a three-dimensional pattern with a gilded effect on the surface of the stone-plastic composite board.

[0037] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions, and alterations to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A stone plastic board based on embossed gilding transfer film, comprising a stone plastic board (8), characterized in that: The surface of the stone-plastic board (8) is heat-transferred with a first transfer film and a second transfer film. The first transfer film includes a first base film layer (1), a first release layer (9), a pattern layer (2), and a first adhesive layer (10) stacked together. The second transfer film is a hot stamping film. The hot stamping film includes a second base film layer (3), a second release layer (4), an aluminum plating layer (6), and a second adhesive layer (7). The hot stamping film is pressed by the concave and convex areas of the embossing roller to form a contact part between the second adhesive layer (7) and the aluminum plating layer (6) and a non-contact part between the aluminum plating layer and the second adhesive layer. The release layer and the aluminum plating layer corresponding to the contact part between the second adhesive layer and the aluminum plating layer form an embossed and gilded pattern layer. The non-contact part between the second adhesive layer and the aluminum plating layer is separated from the second base film layer. The pattern layer and the embossed and gilded pattern layer are transferred to the surface of the stone-plastic board.

2. The stone plastic board based on the embossed gold stamping transfer film according to claim 1, characterized in that: A color layer (5) is provided between the second release layer (4) and the aluminum plating layer (6).

3. The stone plastic board based on the embossed gold stamping transfer film according to claim 1, characterized in that: The overall thickness of the hot stamping film is 10-30μm.

4. The stone plastic board based on the embossed gold stamping transfer film according to claim 1, characterized in that: The horizontal surface of the part where the adhesive layer contacts the hot stamping film has a rock texture or wood grain shape.

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