Film transfer metal belt structure

Abstract

This application provides a film transfer metal strip structure, relating to the field of metal strip technology. The film transfer metal strip structure includes a metal substrate layer, a reinforcing layer, a film transfer pattern layer, and a transparent protective topcoat layer. A first chemical conversion film layer is disposed on the metal substrate layer; the reinforcing layer is disposed on the side of the first chemical conversion film layer facing away from the metal substrate layer; the film transfer pattern layer is disposed on the reinforcing layer; and the transparent protective topcoat layer is disposed on the side of the reinforcing layer facing away from the first chemical conversion film layer and covers the film transfer pattern layer. The first chemical conversion film layer improves the firmness of the reinforcing layer fixed to the metal substrate layer. The reinforcing layer also improves the firmness of the film transfer pattern layer and the transparent protective topcoat layer fixed to the metal substrate layer. The transparent protective topcoat layer protects the internal film transfer pattern layer, reinforcing layer, and metal substrate layer, thereby improving the scratch resistance and weather resistance of the entire film transfer metal strip structure.

Description

Technical Field

[0001] This application relates to the field of metal strip technology, and more particularly to a film transfer metal strip structure. Background Technology

[0002] Printed aluminum strips and other printed metal strips can effectively mimic patterns such as wood grain and stone texture, and are becoming increasingly widely used in the construction industry.

[0003] Printed metal strips can be divided into film transfer metal strips based on different manufacturing processes. The process of film transfer metal strips involves transferring patterns onto metal strips using a film transfer method. Specifically, the pattern layer on the transfer film is transferred to the metal strip through a transfer film, thus forming a metal strip with a pattern layer, which is called film transfer metal strip.

[0004] The pattern layer on existing film transfer metal tapes is prone to peeling and damage, resulting in a short service life for the film transfer metal tapes. Utility Model Content

[0005] This application provides a film transfer metal strip structure to solve the technical problem that the pattern layer of existing film transfer metal strips is prone to peeling off and damage.

[0006] This application provides an embodiment of a film transfer metal strip structure, comprising:

[0007] A metal substrate layer, wherein a first chemical conversion film layer is disposed on one surface of the metal substrate layer;

[0008] A reinforcing layer is disposed on the side of the first chemical conversion film layer that is opposite to the metal substrate layer, and the first chemical conversion film layer is used to enhance the adhesion of the reinforcing layer.

[0009] A film transfer pattern layer is disposed on the side of the reinforcement layer opposite to the first chemical conversion film layer;

[0010] A transparent protective topcoat layer is disposed on the side of the reinforcing layer opposite to the first chemical conversion film layer and covers the film transfer pattern layer. The reinforcing layer is used to enhance the adhesion between the film transfer pattern layer and the transparent protective topcoat layer.

[0011] In one possible implementation, the reinforcing layer is a polyurethane varnish layer.

[0012] In one possible implementation, the thickness of the reinforcing layer is 8 μm to 20 μm.

[0013] In one possible implementation, the transparent protective topcoat layer is a fluorocarbon topcoat layer.

[0014] In one possible implementation, the thickness of the transparent protective topcoat layer is 8μm to 20μm.

[0015] In one possible implementation, a back protective layer is also included, wherein a second chemical conversion film layer is disposed on the side of the metal substrate layer opposite to the first chemical conversion film layer, and the back protective layer is disposed on the side of the second chemical conversion film layer opposite to the metal substrate layer.

[0016] In one possible implementation, the back protective layer is a polyester varnish layer.

[0017] In one possible implementation, a protective film layer is also included, which is disposed on the side of the transparent protective topcoat layer opposite to the film transfer pattern layer.

[0018] In one possible implementation, the protective film layer is a polyethylene protective film layer.

[0019] In one possible implementation, the film transfer pattern layer includes a release layer, an ink protective layer, a printing ink layer, and an adhesive layer stacked sequentially, wherein the adhesive layer is disposed on the side of the reinforcing layer opposite to the first chemical conversion film layer.

[0020] This application provides a film transfer metal strip structure, which includes a metal substrate layer, a reinforcing layer, a film transfer pattern layer, and a transparent protective topcoat layer. A first chemical conversion film layer is disposed on one surface of the metal substrate layer; the reinforcing layer is disposed on the side of the first chemical conversion film layer facing away from the metal substrate layer, and the first chemical conversion film layer is used to enhance the adhesion of the reinforcing layer to the metal substrate layer; the film transfer pattern layer is disposed on the side of the reinforcing layer facing away from the first chemical conversion film layer; the transparent protective topcoat layer is disposed on the side of the reinforcing layer facing away from the first chemical conversion film layer and covers the film transfer pattern layer, and the reinforcing layer is used to enhance the adhesion between the film transfer pattern layer and the transparent protective topcoat layer. In the film transfer metal strip structure of this application, a first chemical conversion film layer is formed on one surface of the metal substrate layer. A reinforcing layer is formed on the side of the first chemical conversion film layer facing away from the metal substrate layer. The first chemical conversion film layer enhances the adhesion of the reinforcing layer, thereby improving the firmness of the reinforcing layer fixed to the metal substrate layer and preventing the reinforcing layer from falling off. A film transfer pattern layer is formed on the side of the reinforcing layer facing away from the first chemical conversion film layer, serving as a decorative pattern. A transparent protective topcoat layer is formed on the side of the reinforcing layer facing away from the first chemical conversion film layer and covers the film transfer pattern layer. That is, the side of the reinforcing layer facing away from the first chemical conversion film layer has both a film transfer pattern layer and a transparent protective topcoat layer. Since the transparent protective topcoat layer covers the film transfer pattern layer, the film transfer pattern layer is also located between the reinforcing layer and the transparent protective topcoat layer. Because the transparent protective topcoat layer is transparent, the interior can be seen through the transparent protective topcoat layer. The pattern of the film transfer pattern layer is incorporated, and because the reinforcing layer has both the film transfer pattern layer and the transparent protective topcoat layer on the side facing away from the first chemical conversion film layer, the reinforcing layer enhances the adhesion of the film transfer pattern layer and the transparent protective topcoat layer. The first chemical conversion film layer, in turn, enhances the adhesion of the reinforcing layer. This improves the firmness of the reinforcing layer, film transfer pattern layer, and transparent protective topcoat layer on the metal substrate layer, preventing them from detaching. Furthermore, the transparent protective topcoat layer protects the internal film transfer pattern layer, reinforcing layer, and metal substrate layer, thereby improving the scratch resistance and weather resistance of the entire film transfer metal strip structure. This ensures that the film transfer pattern layer is not easily detached or damaged, and also protects the internal metal substrate layer, extending the service life of the film transfer metal strip structure and making it suitable for outdoor applications. Attached Figure Description

[0021] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0022] Figure 1 A schematic diagram of the film transfer metal strip structure provided for an embodiment of this application;

[0023] Figure 2 This is a schematic diagram of the structure of the transfer film provided in an embodiment of this application.

[0024] Explanation of reference numerals in the attached figures:

[0025] 10-Transfer film;

[0026] 100 - Metal substrate layer; 110 - First chemical conversion coating layer; 120 - Second chemical conversion coating layer;

[0027] 200-Reinforcement layer;

[0028] 300 - Film transfer pattern layer; 310 - Release layer; 320 - Ink protective layer; 333 - Printing ink layer; 340 - Adhesive layer;

[0029] 400-Transparent protective topcoat layer;

[0030] 500 - Backside protective layer;

[0031] 600 - Protective film layer;

[0032] 700 - Transparent thin film layer.

[0033] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0034] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0035] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0036] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0037] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0038] Printed aluminum strips and other printed metal strips can effectively mimic patterns such as wood grain and stone texture, and are becoming increasingly widely used in the construction industry.

[0039] Printed metal strips can be divided into film transfer metal strips based on different manufacturing processes. The process of film transfer metal strips involves transferring patterns onto metal strips using a film transfer method. Specifically, the pattern layer on the transfer film is transferred to the metal strip through a transfer film, thus forming a metal strip with a pattern layer, which is called film transfer metal strip.

[0040] Because the pattern layer on existing film transfer metal tapes has poor scratch resistance and weather resistance (weather resistance refers to the ability of a material to maintain its original physical properties, chemical stability, and appearance integrity when exposed to sunlight, temperature changes, wind, rain, humidity, ultraviolet rays, and other climatic conditions in the outdoor natural environment for a long time), the pattern layer on existing film transfer metal tapes is prone to peeling off and damage, resulting in a low service life of film transfer metal tapes. Furthermore, the service life of existing film transfer metal tapes in outdoor environments is extremely short, making them unsuitable for outdoor environments.

[0041] To address the technical problem of easy detachment and damage of the pattern layer in existing film transfer metal strips, this application proposes a film transfer metal strip structure. The film transfer metal strip structure includes a metal substrate layer, a reinforcing layer, a film transfer pattern layer, and a transparent protective topcoat layer. A first chemical conversion film layer is disposed on one surface of the metal substrate layer. The reinforcing layer is disposed on the side of the first chemical conversion film layer facing away from the metal substrate layer, and the first chemical conversion film layer is used to enhance the adhesion of the reinforcing layer to the metal substrate layer. The film transfer pattern layer is disposed on the side of the reinforcing layer facing away from the first chemical conversion film layer. The transparent protective topcoat layer is disposed on the side of the reinforcing layer facing away from the first chemical conversion film layer and covers the film transfer pattern layer. The reinforcing layer is used to enhance the adhesion between the film transfer pattern layer and the transparent protective topcoat layer.

[0042] In the film transfer metal strip structure of this application, a first chemical conversion film layer is formed on one surface of the metal substrate layer. A reinforcing layer is formed on the side of the first chemical conversion film layer facing away from the metal substrate layer. The first chemical conversion film layer enhances the adhesion of the reinforcing layer, thereby improving the firmness of the reinforcing layer fixed to the metal substrate layer and preventing the reinforcing layer from falling off. A film transfer pattern layer is formed on the side of the reinforcing layer facing away from the first chemical conversion film layer, serving as a decorative pattern. A transparent protective topcoat layer is formed on the side of the reinforcing layer facing away from the first chemical conversion film layer and covers the film transfer pattern layer. That is, the side of the reinforcing layer facing away from the first chemical conversion film layer has both a film transfer pattern layer and a transparent protective topcoat layer. Since the transparent protective topcoat layer covers the film transfer pattern layer, the film transfer pattern layer is located between the reinforcing layer and the transparent protective topcoat layer. Because the transparent protective topcoat layer is transparent, the interior can be seen through the transparent protective topcoat layer. The pattern of the film transfer pattern layer is incorporated, and because the reinforcing layer has both the film transfer pattern layer and the transparent protective topcoat layer on the side facing away from the first chemical conversion film layer, the reinforcing layer enhances the adhesion of the film transfer pattern layer and the transparent protective topcoat layer. The first chemical conversion film layer, in turn, enhances the adhesion of the reinforcing layer. This improves the firmness of the reinforcing layer, film transfer pattern layer, and transparent protective topcoat layer on the metal substrate layer, preventing them from detaching. Furthermore, the transparent protective topcoat layer protects the internal film transfer pattern layer, reinforcing layer, and metal substrate layer, thereby improving the scratch resistance and weather resistance of the entire film transfer metal strip structure. This ensures that the film transfer pattern layer is not easily detached or damaged, and also protects the internal metal substrate layer, extending the service life of the film transfer metal strip structure and making it suitable for outdoor applications.

[0043] The technical solution of the application will be described in detail below with reference to the accompanying drawings and specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments.

[0044] Reference Figures 1 to 2 As shown, Figure 1 A schematic diagram of the film transfer metal strip structure provided for an embodiment of this application; Figure 2 This is a schematic diagram of the structure of the transfer film provided in an embodiment of this application.

[0045] In the embodiments of this application, reference is made to Figure 1 As shown, an embodiment of this application provides a film transfer metal strip structure, including a metal substrate layer 100, a reinforcing layer 200, a film transfer pattern layer 300, and a transparent protective topcoat layer 400.

[0046] A first chemical conversion film layer 110 is disposed on one surface of the metal substrate layer 100.

[0047] The reinforcing layer 200 is disposed on the side of the first chemical conversion film layer 110 that is opposite to the metal substrate layer 100, and the first chemical conversion film layer 110 is used to enhance the adhesion of the reinforcing layer 200.

[0048] The film transfer pattern layer 300 is disposed on the side of the reinforcing layer 200 opposite to the first chemical conversion film layer 110.

[0049] A transparent protective topcoat layer 400 is disposed on the side of the reinforcing layer 200 facing away from the first chemical conversion film layer 110 and covers the film transfer pattern layer 300. The reinforcing layer 200 is used to enhance the adhesion between the film transfer pattern layer 300 and the transparent protective topcoat layer 400.

[0050] In the film transfer metal strip structure of this application, the metal substrate layer 100 can be an aluminum plate, cold-rolled plate, hot-dip galvanized plate, electro-galvanized plate, aluminized plate, chrome-plated plate, electrolytic plate, stainless steel plate, metal alloy plate, etc. Specifically, the metal substrate layer 100 can be an aluminum substrate, and the aluminum substrate can be 3003 alloy with a thickness of 1mm to 3mm.

[0051] After degreasing and passivation treatment, a chemical conversion film will be formed on the surface of the metal substrate layer 100.

[0052] Specifically, the first chemical conversion film layer 110 is a silane layer. The silane layer can enhance the bonding force with the subsequent coating through chemical bonds, thereby improving the adhesion of the subsequent coating. In addition, the silane layer also improves the corrosion resistance of the metal substrate layer 100.

[0053] The reinforcing layer 200 is disposed on the side of the first chemical conversion film layer 110 facing away from the metal substrate layer 100. The first chemical conversion film improves the adhesion of the reinforcing layer 200, thereby enhancing the firmness of the reinforcing layer 200 fixed to the metal substrate layer 100 and preventing the reinforcing layer 200 from falling off. The reinforcing layer 200 can enhance the adhesion of subsequent coatings.

[0054] Specifically, the reinforcing layer 200 can be a primer, such as polyurethane paint.

[0055] The film transfer pattern layer 300 is formed by transferring the film transfer pattern layer 300 on the transfer film 10 onto the reinforcing layer 200, as shown in the figure. Figure 2 As shown, the transfer film 10 includes a film transfer pattern layer 300 and a transparent thin film layer 700. After the transfer film 10 is imprinted onto the side of the reinforcing layer 200 facing away from the first chemical conversion film layer 110, the transparent thin film layer 700 is removed. (Refer to...) Figure 1 As shown, the film transfer pattern layer 300 can be disposed on the side of the reinforcing layer 200 opposite to the first chemical conversion film layer 110.

[0056] The pattern of the film transfer pattern layer 300 can be set according to the user's needs, such as wood grain, stone grain and other patterns.

[0057] Reference Figure 1 As shown, the transparent protective topcoat layer 400 is disposed on the side of the film transfer pattern layer 300 facing away from the reinforcing layer 200. That is, the side of the reinforcing layer 200 facing away from the first chemical conversion film layer 110 has both the film transfer pattern layer 300 and the transparent protective topcoat layer 400. Since the transparent protective topcoat layer 400 covers the film transfer pattern layer 300, the film transfer pattern layer 300 is also located between the reinforcing layer 200 and the transparent protective topcoat layer 400.

[0058] The transparent protective topcoat layer 400 can be applied by roller coating. The transparent protective topcoat layer 400 protects the film transfer pattern layer 300, the reinforcing layer 200 and the metal substrate layer 100 covering it, preventing them from being scratched and damaged, thus providing physical protection.

[0059] Furthermore, since the reinforcing layer 200 has both a film transfer pattern layer 300 and a transparent protective topcoat layer 400 on the side facing away from the first chemical conversion film layer 110, the adhesion of the film transfer pattern layer 300 and the transparent protective topcoat layer 400 is enhanced under the action of the reinforcing layer 200. The firmness of the film transfer pattern layer 300 and the transparent protective topcoat layer 400 fixed on the metal substrate layer 100 is improved, ensuring that the film transfer pattern layer 300 and the transparent protective topcoat layer 400 are not easy to fall off.

[0060] Specifically, the transparent protective topcoat layer 400 can be a fluorocarbon topcoat.

[0061] Because the transparent protective topcoat layer 400 is transparent, the internal film transfer pattern layer 300 can be seen through the transparent protective topcoat layer 400, preventing the transparent protective topcoat layer 400 from obscuring the film transfer pattern layer 300.

[0062] In the film transfer metal strip structure of this application, a first chemical conversion film layer 110 is formed on one surface of the metal substrate layer 100. A reinforcing layer 200 is formed on the side of the first chemical conversion film layer 110 facing away from the metal substrate layer 100. The first chemical conversion film layer 110 enhances the adhesion of the reinforcing layer 200, improving the firmness of the reinforcing layer 200 fixed to the metal substrate layer 100 and preventing it from falling off. A film transfer pattern layer 300 is formed on the side of the reinforcing layer 200 facing away from the first chemical conversion film layer 110, serving as a decorative pattern. A transparent protective topcoat layer 400 is formed on the side of the reinforcing layer 200 facing away from the first chemical conversion film layer 110 and covers the film transfer pattern layer 300. Because the transparent protective topcoat layer 400 is transparent, the pattern of the internal film transfer pattern layer 300 can be seen through the transparent protective topcoat layer 400, and the... The reinforcing layer 200 enhances the adhesion of the film transfer pattern layer 300 and the transparent protective topcoat layer 400, while the first chemical conversion film layer 110 enhances the adhesion of the reinforcing layer 200. This improves the firmness of the reinforcing layer 200, the film transfer pattern layer 300, and the transparent protective topcoat layer 400 on the metal substrate layer 100, thus preventing the film transfer pattern layer 300 and the transparent protective topcoat layer 400 from falling off. Furthermore, the transparent protective topcoat layer 400 protects the inner film transfer pattern layer 300, the reinforcing layer 200, and the metal substrate layer 100, thereby improving the scratch resistance and weather resistance of the entire film transfer metal strip structure. This ensures that the film transfer pattern layer 300 is not easily detached or damaged, and also protects the inner metal substrate layer 100, extending the service life of the film transfer metal strip structure and enabling it to meet the requirements of outdoor applications.

[0063] In some embodiments, the reinforcing layer 200 is a polyurethane coating layer.

[0064] In this embodiment, the reinforcing layer 200 is a polyurethane paint layer, that is, a layer of polyurethane paint is coated on the side of the first chemical conversion film layer 110 that is away from the metal substrate layer 100. The polyurethane paint layer has the characteristics of high gloss, strong adhesion, wear resistance and corrosion resistance. The polyurethane paint layer can be well combined with the film transfer pattern layer 300, thereby improving the adhesion of the film transfer pattern layer 300. In addition, the polyurethane paint layer can also enhance the adhesion of the transparent protective topcoat layer 400, preventing the reinforcing layer 200, the film transfer pattern layer 300 and the transparent protective topcoat layer 400 from separating and falling off from the metal substrate layer 100 in harsh outdoor environments.

[0065] Because defects such as uneven color difference, color bands, color spots, shadows, and oil films may appear on the surface of the metal substrate layer 100, the polyurethane paint layer in this embodiment is located between the metal substrate layer 100 and the film transfer pattern layer 300. The polyurethane paint layer can cover up the defects such as uneven color difference, color bands, color spots, shadows, and oil films on the surface of the metal substrate layer 100, so that the color of the surface of the metal substrate layer 100 is consistent, which can enhance the color saturation of the film transfer pattern layer 300 and improve the aesthetics of the entire film transfer metal strip structure.

[0066] In another possible embodiment, the thickness of the reinforcing layer 200 is 8 μm to 20 μm.

[0067] If the thickness of the reinforcing layer 200 is too thick, it will result in material waste of the reinforcing layer 200 and will not be able to guarantee the flatness of the surface of the reinforcing layer 200. It will also cause defects in the reinforcing layer 200, resulting in more defective products and a lower yield. If the thickness of the reinforcing layer 200 is too thin, it will reduce the effect of enhancing the adhesion of subsequent coatings.

[0068] In this embodiment, the thickness of the reinforcing layer 200 is set to 8μm~20μm, which ensures the effect of enhancing the adhesion of subsequent coatings while reducing the thickness of the entire film transfer metal strip structure, meeting the lightweight requirements of the film transfer metal strip structure. Furthermore, due to the moderate thickness, the surface flatness of the reinforcing layer 200 is ensured, preventing defects from forming on the reinforcing layer 200. This saves production costs while improving the yield and production efficiency.

[0069] In another possible embodiment, the transparent protective topcoat layer 400 is a fluorocarbon topcoat layer.

[0070] The fluorocarbon topcoat layer can be a fluoroolefin-vinyl ether copolymer topcoat, also known as FEVE topcoat. The gloss of the fluorocarbon topcoat layer can be adjusted according to requirements. The lower the gloss of the fluorocarbon topcoat layer, the duller the visual effect of the entire film transfer metal strip structure will be, resulting in low visibility in low light environments and poor aesthetics. The higher the gloss of the fluorocarbon topcoat layer, the brighter and fuller the color of the entire film transfer metal strip structure will be, resulting in better decorative effect, but it will also make the processing more difficult and costly.

[0071] In this embodiment, the gloss of the fluorocarbon topcoat layer can be set to 40 to 80 degrees, which ensures that the colors of the entire film transfer metal strip structure are bright and full, while reducing processing costs and processing difficulty and improving production efficiency.

[0072] The fluorocarbon topcoat layer can significantly improve the scratch resistance, solvent resistance, and weather resistance of the entire film transfer metal strip structure, enabling the film transfer metal strip structure to be used outdoors for a long time.

[0073] The fluorocarbon topcoat layer is applied to the film transfer pattern layer 300 by hot pressing. Specifically, it can be applied to the film transfer pattern layer 300 by roller coating and baking. After high-temperature curing, the FEVE topcoat has excellent stability and protects the internally covering film transfer pattern layer 300, reinforcement layer 200 and metal substrate layer 100 from scratches and damage.

[0074] In some embodiments, the thickness of the transparent protective topcoat layer 400 is 8 μm to 20 μm.

[0075] If the transparent protective topcoat layer 400 is too thick, it will result in material waste and increased cost. Furthermore, it will not be able to guarantee the smoothness of the surface of the transparent protective topcoat layer 400, and it will also cause defects in the transparent protective topcoat layer 400, resulting in more defective products and a lower yield. If the transparent protective topcoat layer 400 is too thin, it will reduce the protective effect of the transparent protective topcoat layer 400.

[0076] In this embodiment, the thickness of the transparent protective topcoat layer 400 is set to 8μm~20μm. While ensuring the protective effect of the transparent protective topcoat layer 400, the thickness of the entire film transfer metal strip structure is reduced. This meets the lightweight requirements of the film transfer metal strip structure and also enhances its scratch resistance and weather resistance. Furthermore, due to the moderate thickness, production costs are saved and production efficiency is improved.

[0077] In some embodiments, a back protective layer 500 is also included, and a second chemical conversion film layer 120 is disposed on the side of the metal substrate layer 100 opposite to the first chemical conversion film layer 110, and the back protective layer 500 is disposed on the side of the second chemical conversion film layer 120 opposite to the metal substrate layer 100.

[0078] In this embodiment, the second chemical conversion film layer 120 is the same as the first chemical conversion film layer 110. After the surface of the metal substrate layer 100 is degreased and passivated, the first chemical conversion film layer 110 and the second chemical conversion film layer 120 are formed on the two surfaces of the metal substrate layer 100, respectively. Specifically, the first chemical conversion film layer 110 and the second chemical conversion film layer 120 are both silane layers. The silane layer can enhance the bonding force with the subsequent coating through chemical bonds, that is, improve the adhesion of the subsequent coating. In addition, the silane layer also improves the corrosion resistance of the metal substrate layer 100.

[0079] The back protective layer 500 protects the back side of the metal substrate layer 100, improving its scratch resistance, solvent resistance, and weather resistance. Furthermore, the second chemical conversion film layer 120 enhances the adhesion of the back protective layer 500.

[0080] In another possible embodiment, the back protective layer 500 is a polyester lacquer layer.

[0081] In this embodiment, a polyester paint layer is provided on the back side of the metal substrate layer 100. The polyester paint layer has the characteristics of full paint film, high hardness, and strong wear resistance, providing decoration and protection to the back side of the metal substrate layer 100.

[0082] Furthermore, the thickness of the back protective layer 500 is 6μm~12μm.

[0083] Insufficient thickness of the back protective layer 500 may prevent the formation of a continuous film layer, reduce the adhesion of the back protective layer 500, making it prone to peeling off, and significantly reduce its protective ability and abrasion resistance. Excessive thickness of the back protective layer 500 will prolong drying time, thereby reducing production efficiency and increasing production costs due to increased material consumption.

[0084] In this embodiment, the thickness of the back protective layer 500 is 6μm~12μm, which ensures the adhesion, protection and wear resistance of the back protective layer 500, while making the thickness of the back protective layer 500 sufficiently low, thereby improving production efficiency and reducing production costs.

[0085] In one embodiment, a protective film layer 600 is also included, which is disposed on the side of the transparent protective topcoat layer 400 that faces away from the film transfer pattern layer 300.

[0086] In this embodiment, the protective film layer 600 is mainly used to prevent the surface of the film transfer metal strip structure from being scratched. When using the film transfer metal strip structure, the protective film layer 600 is removed.

[0087] In other embodiments, the protective film layer 600 is a polyethylene protective film layer.

[0088] In this embodiment, the polyethylene protective film layer is the PE protective film. The PE protective film can prevent the film transfer metal strip structure from being physically damaged. During the processing, transportation or use of the film transfer metal strip structure, it can prevent hard objects from scratching and causing surface damage, thus maintaining the smoothness of the product.

[0089] Furthermore, the thickness of the PE protective film is 30μm~60μm.

[0090] If the PE protective film is too thin, it will result in insufficient physical protection and make it easy for the PE protective film to fall off. If the PE protective film is too thick, after removing the PE protective film, it is easy to leave adhesive residue on the film transfer metal strip structure, requiring additional cleaning of the surface of the film transfer metal strip structure. In addition, an excessively thick PE protective film will also increase costs.

[0091] In this embodiment, the thickness of the PE protective film is set to 30μm~60μm. This ensures the protective effect of the PE protective film while making it less likely to leave adhesive residue on the film transfer metal strip structure after the PE protective film is removed, and also reduces the material cost of the PE protective film.

[0092] In another embodiment, the film transfer pattern layer 300 includes a release layer 310, an ink protective layer 320, a printing ink layer 330 and an adhesive layer 340 stacked sequentially, with the adhesive layer 340 disposed on the side of the reinforcing layer 200 facing away from the first chemical conversion film layer 110.

[0093] In this embodiment, the film transfer pattern layer 300 is transferred from the transfer film 10 onto the reinforcement layer 200 by means of the transfer film 10. (Refer to...) Figure 2 As shown, the transfer film 10 includes a film transfer pattern layer 300 and a transparent film layer 700. The film transfer pattern layer 300 includes a release layer 310, an ink protective layer 320, a printing ink layer 330, and an adhesive layer 340. That is, the transfer film 10 includes a transparent film layer 700, a release layer 310, an ink protective layer 320, a printing ink layer 330, and an adhesive layer 340 stacked sequentially. The transparent film layer 700 is the carrier of the pattern and has the characteristics of uniform tension, good heat resistance, and good release properties. The transparent film layer 700 is made of a film that can withstand high temperatures above 200°C, such as polyimide film or high-temperature resistant PET film.

[0094] If the transparent film layer 700 is too thin, its mechanical strength will be insufficient; if it is too thick, its transparency will decrease.

[0095] In this embodiment, the thickness of the transparent film layer 700 is 30μm~50μm. This ensures both the mechanical strength and transparency of the transparent film layer 700.

[0096] Release layer 310 is a coating of release agent. The function of release layer 310 is to separate ink protective layer 320, printing ink layer 330 and adhesive layer 340 from transparent film layer 700, and to ensure that ink protective layer 320, printing ink layer 330 and adhesive layer 340 can be transferred to reinforcing layer 200.

[0097] If the release layer 310 is too thin, its mechanical strength will be insufficient, making it prone to breakage. If the release layer 310 is too thick, the amount of material required will increase, thereby increasing production costs.

[0098] In this embodiment, the release layer 310 has a thickness of 1μm to 3μm. This ensures that the release layer 310 has sufficient mechanical strength while reducing the amount of material required for the release layer 310, thereby reducing production costs.

[0099] The ink protective layer 320 serves to protect the printing ink layer 330, and the ink protective layer 320 can be a polyester layer.

[0100] If the ink protective layer 320 is too thin, its mechanical strength will be insufficient, making it prone to damage. If the ink protective layer 320 is too thick, the amount of material required will increase, thereby increasing production costs.

[0101] In this embodiment, the thickness of the ink protective layer 320 is 1μm to 3μm. This ensures that the ink protective layer 320 has sufficient mechanical strength while reducing the amount of material required for the ink protective layer 320, thereby reducing production costs.

[0102] The printing ink layer 330 is used to provide the required transfer pattern.

[0103] If the thickness of the printing ink layer 330 is too thin, the mechanical strength of the printing ink layer 330 will be insufficient, making the printing ink layer 330 easy to break. If the thickness of the printing ink layer 330 is too thick, the amount of material required for the printing ink layer 330 will increase, thereby increasing the production cost.

[0104] In this embodiment, the thickness of the printing ink layer 330 is 1μm to 3μm. This ensures that the printing ink layer 330 has sufficient mechanical strength while reducing the amount of material required for the printing ink layer 330, thereby reducing production costs.

[0105] The adhesive layer 340 can be bonded to the reinforcing layer 200, thereby enabling the entire film transfer pattern layer 300 to be bonded to the reinforcing layer 200. The specific structure of the adhesive layer 340 can be glue, because the reinforcing layer 200 is a polyurethane paint layer. The polyurethane paint layer can enhance the adhesion of the adhesive layer 340, thereby improving the adhesion of the film transfer pattern layer 300. This enhances the firmness of the film transfer pattern layer 300 fixed to the metal substrate layer 100, and thus prevents the film transfer pattern layer 300 from falling off.

[0106] If the adhesive layer 340 is too thin, its mechanical strength will be insufficient, making it prone to breakage. If the adhesive layer 340 is too thick, the amount of material required for the adhesive layer 340 will increase, thereby increasing production costs.

[0107] In this embodiment, the thickness of the adhesive layer 340 is 1μm to 3μm. This ensures that the adhesive layer 340 has sufficient mechanical strength while reducing the amount of material required for the adhesive layer 340, thereby reducing production costs.

[0108] The pattern of the printing ink layer 330 can be set according to the user's needs, such as wood grain, stone grain, etc.

[0109] Specifically, the transfer film 10 can transfer the film transfer pattern layer 300 on the transfer film 10 onto the reinforcing layer 200 by roller pressing.

[0110] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the following claims.

[0111] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A film transfer metal strip structure, characterized in that, include: A metal substrate layer (100) is provided with a first chemical conversion film layer (110) on one surface of the metal substrate layer (100); A reinforcing layer (200) is disposed on the side of the first chemical conversion film layer (110) facing away from the metal substrate layer (100), and the first chemical conversion film layer (110) is used to enhance the adhesion of the reinforcing layer (200); A film transfer pattern layer (300) is disposed on the side of the reinforcement layer (200) facing away from the first chemical conversion film layer (110); A transparent protective topcoat layer (400) is disposed on the side of the reinforcing layer (200) facing away from the first chemical conversion film layer (110) and covers the film transfer pattern layer (300). The reinforcing layer (200) is used to enhance the adhesion between the film transfer pattern layer (300) and the transparent protective topcoat layer (400).

2. The film transfer metal strip structure according to claim 1, characterized in that, The reinforcing layer (200) is a polyurethane coating.

3. The film transfer metal strip structure according to claim 1, characterized in that, The thickness of the reinforcing layer (200) is 8μm to 20μm.

4. The film transfer metal strip structure according to claim 1, characterized in that, The transparent protective topcoat layer (400) is a fluorocarbon topcoat layer.

5. The film transfer metal strip structure according to claim 1, characterized in that, The thickness of the transparent protective topcoat layer (400) is 8μm~20μm.

6. The film transfer metal strip structure according to any one of claims 1 to 5, characterized in that, It also includes a back protective layer (500), wherein a second chemical conversion film layer (120) is disposed on the side of the metal substrate layer (100) opposite to the first chemical conversion film layer (110), and the back protective layer (500) is disposed on the side of the second chemical conversion film layer (120) opposite to the metal substrate layer (100).

7. The film transfer metal strip structure according to claim 6, characterized in that, The back protective layer (500) is a polyester paint layer.

8. The film transfer metal strip structure according to any one of claims 1 to 5, characterized in that, It also includes a protective film layer (600) disposed on the side of the transparent protective topcoat layer (400) opposite to the film transfer pattern layer (300).

9. The film transfer metal strip structure according to claim 8, characterized in that, The protective film layer (600) is a polyethylene protective film layer.

10. The film transfer metal strip structure according to any one of claims 1 to 5, characterized in that, The film transfer pattern layer (300) includes a release layer (310), an ink protective layer (320), a printing ink layer (330), and an adhesive layer (340) stacked sequentially, wherein the adhesive layer (340) is disposed on the side of the reinforcing layer (200) facing away from the first chemical conversion film layer (110).

Images