Decorative membrane and decorative part

Abstract

The utility model discloses a decorative membrane and a decorative part, the decorative membrane comprises a base material layer, a texture layer and an ink layer, the texture layer and the ink layer are sequentially laminated on the base material layer, the decorative membrane further comprises a high extension layer arranged between the base material layer and the texture layer, and the elongation at break of the high extension layer is 130-150%. The decorative membrane has excellent tensile property, is easy to process, mold and inject, and can be suitable for decoration of complex shapes; the prepared plastic has excellent simulation degree, is suitable for decorative parts with wood grain-like and metal effects, has a good decorative effect, and can cover flow mark defects on the plastic surface in the injection molding process.

Description

Technical Field

[0001] This utility model belongs to the field of decorative film technology, specifically relating to a decorative film sheet and decorative parts. Background Technology

[0002] With the continuous development of automotive technology, the craftsmanship of automotive interior and exterior trim parts is also constantly evolving. To meet the diverse decorative and functional needs of different customers, the INS (In-Mold Stamping) process is being used more and more frequently. The INS process utilizes thermoforming or high-pressure molding methods to stretch the transferred INS sheet three times, then cut out inserts according to the product shape, and finally accurately place these inserts into the injection mold cavity for injection molding to obtain a product with surface decoration.

[0003] Existing INS decorative films have poor tensile properties, making them unsuitable for decorating complex shapes. In addition, the effects of existing INS decorative films are relatively simple and lack simulation. These factors limit the application scenarios of INS decorative films. Utility Model Content

[0004] The purpose of this application is to provide a decorative film and decorative parts to solve the technical problems of poor tensile properties, difficulty in applying to complex shapes, and poor simulation of existing INS decorative films.

[0005] To achieve the above objectives, a first aspect of this application provides a decorative film comprising a substrate layer and a textured layer and an ink layer sequentially stacked on the substrate layer. The decorative film further comprises a high-elongation layer disposed between the substrate layer and the textured layer, wherein the elongation at break of the high-elongation layer is 130-150%.

[0006] In one or more embodiments, a metal layer is further included, the metal layer being disposed between the texture layer and the ink layer.

[0007] In one or more embodiments, the metal layer is an indium layer or an indium-tin alloy layer.

[0008] In one or more embodiments, the thickness of the metal layer is 30 to 50 nm.

[0009] In one or more embodiments, a complementary color layer is further included, the complementary color layer being disposed between the metal layer and the ink layer, the thickness of the complementary color layer being 2 to 3 μm.

[0010] In one or more embodiments, a varnish layer is further included, the varnish layer being disposed between the metal layer and the ink layer, the varnish layer having a thickness of 2 to 3 μm.

[0011] In one or more embodiments, the light transmittance of the high-ductility layer is 20-70%.

[0012] In one or more embodiments, the thickness of the highly elongated layer is 1–2 μm.

[0013] In one or more embodiments, the thickness of the substrate layer is 200–300 μm.

[0014] In one or more embodiments, the substrate layer is a PC layer.

[0015] In one or more embodiments, the thickness of the texture layer is 8–12 μm.

[0016] In one or more embodiments, the texture layer is a UV-curable adhesive layer.

[0017] In one or more embodiments, the thickness of the ink layer is 10–12 μm.

[0018] In one or more embodiments, the elongation at break of the ink layer is 130-150%.

[0019] To achieve the above objectives, a second aspect of this application provides a decorative element, comprising:

[0020] Matrix;

[0021] The decorative film described in any of the above embodiments is disposed on the surface of the substrate.

[0022] The advantages of this application, which differ from existing technologies, are:

[0023] The decorative film of this application has excellent tensile properties, is easy to process and form, is easy to injection mold, and can be applied to decorations of complex shapes;

[0024] The decorative film of this application has excellent simulation and is suitable for decorative parts with wood grain and metal effects. It has a good decorative effect and can cover flow marks on the plastic surface during injection molding.

[0025] The decorative film of this application has a simple manufacturing process, low production cost, deeper decorative area, and can achieve inverted wrapping.

[0026] The decorative film of this application has excellent surface hardness, corrosion resistance, wear resistance and damp heat resistance. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the structure of one embodiment of the decorative film of this application;

[0029] Figure 2 This is a schematic diagram of another embodiment of the decorative film of this application;

[0030] Figure 3 This is a schematic diagram of another embodiment of the decorative film of this application;

[0031] Figure 4 This is a structural schematic diagram of one embodiment of the decorative component of this application.

[0032] As shown in the figure:

[0033] Decorative film 10; substrate layer 100; high-elasticity layer 200; texture layer 300; ink layer 400; metal layer 500; complementary color layer 600; varnish layer 700;

[0034] Matrix 20. Detailed Implementation

[0035] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0036] To address the problems existing in current INS decorative films, the applicant has developed a novel decorative film with excellent tensile properties, suitable for decoration of complex shapes, and superior simulation, significantly expanding the application scenarios of INS decorative films.

[0037] Specifically, please refer to Figure 1 , Figure 1 This is a schematic diagram of the structure of one embodiment of the decorative film of this application.

[0038] like Figure 1As shown, the decorative film 10 includes a substrate layer 100, a high-elasticity layer 200, a texture layer 300, and an ink layer 400. The high-elasticity layer 200 is disposed between the substrate layer 100 and the texture layer 300, and the ink layer 400 is disposed on the side of the texture layer 300 facing away from the substrate layer 100.

[0039] Among them, the high-ductility layer 200 has excellent tensile properties, with an elongation at break of 130-150%.

[0040] In one embodiment, the transmittance of the high-ductility layer 200 can be 20-70%, and the thickness of the high-ductility layer 200 can be 1-2 μm.

[0041] The high-elongation layer 200 can be prepared by a coating process. Its material can be a mixture of acrylic resin doped with nano-carbon powder and a flexible agent to meet the requirements of light transmittance and elongation at break.

[0042] By setting a high elongation at break high-strength layer 200 between the substrate layer 100 and the texture layer 300, the tensile properties of the film are significantly improved, making the film easy to form and suitable for decoration with complex shapes.

[0043] In one embodiment, the substrate layer 100 can be made of PC material, and its thickness can be set to 200-300 μm. In other embodiments, the material and thickness of the substrate layer 100 can be selected based on actual needs, and the effects of this embodiment can be achieved in all cases.

[0044] In one embodiment, the texture layer 300 can be a UV-curable adhesive layer, which can be prepared by UV curing after imprinting, and the UV curing conditions can be 400-600 MJ.

[0045] In one embodiment, the thickness of the ink layer 400 can be set to 10-12 μm; to further improve the tensile properties of the film, the elongation at break of the ink layer 400 can be 130-150%.

[0046] Specifically, the ink layer 400 can be prepared by screen printing ink. For example, in one embodiment, Toyo Ink TNS Black is used to prepare a black ink layer 400 that meets the above parameters by screen printing.

[0047] In one embodiment, the ink layer 400 can also be engraved, thereby enabling the decorative film 10 to provide a richer surface feel and texture design.

[0048] In this embodiment, the texture layer 300 provides tactile sensation and three-dimensional effect, and the ink layer 400 provides color and pattern, which significantly improves the simulation of the decorative film 10.

[0049] Meanwhile, the texture layer 300 is located inside, avoiding corrosion and wear problems, while the ink layer 400 is located on the outermost side, providing higher film surface hardness and improving the film's corrosion resistance, wear resistance, and damp heat resistance.

[0050] In one embodiment, the texture layer 300 can have various texture patterns such as single light pillars, floating light pillars, double light pillars, and wood imitation; the ink layer 400 can provide patterns and colors that match the texture layer 300, thereby achieving a three-dimensional simulation effect.

[0051] In order to further improve the display effect and stretchability of the decorative film 10, in this embodiment, a metal layer 500 is also arranged on the side of the UV texture layer 300 away from the substrate layer 100. The metal layer 500 has the effect of high brightness and easy stretching, and can present a metallic effect.

[0052] In one embodiment, the metal layer 500 may be made of indium or an indium-tin alloy layer, and the thickness of the metal layer 500 may be 30–50 nm.

[0053] For example, the metal layer 500 can be made of an indium-tin alloy with an indium-tin ratio of 80:20, and can be prepared by magnetron sputtering or NCVM coating process.

[0054] Based on the above embodiments, the decorative film 10, by arranging a high-elongation layer 200 on the surface of the substrate layer 100 and arranging a metal layer 500 between the texture layer 300 and the ink layer 400, can significantly improve the tensile properties of the film, making the film easy to form and suitable for decoration of complex shapes; by using the built-in texture layer 300 and the external ink layer 400, the two work together to significantly improve the simulation of the film, while also improving the surface hardness, corrosion resistance, wear resistance and damp heat resistance of the film.

[0055] In another embodiment, to further improve the color reproduction of the film, the decorative film 10 also includes a complementary color layer 600, see [link to relevant documentation]. Figure 2 , Figure 2 This is a schematic diagram of another embodiment of the decorative film of this application.

[0056] like Figure 2 As shown, in this embodiment, a complementary color layer 600 is also arranged between the ink layer 400 and the metal layer 500. The complementary color layer 600 can provide surface protection for the texture layer 300 on the one hand, and correct color deviation on the other hand, thereby improving color consistency and saturation.

[0057] In one embodiment, the complementary color layer 600 can be prepared by coating, and its material can be an acrylic resin doped with color particles and a flexibilizer.

[0058] In one embodiment, the thickness of the complementary color layer 600 can be 2–3 μm.

[0059] In yet another embodiment, for applications where no color matching is required, the decorative film 10 may further include a varnish layer 700. Please refer to [link to relevant documentation]. Figure 3 , Figure 3 This is a schematic diagram of another embodiment of the decorative film of this application.

[0060] like Figure 3 As shown, in this embodiment, a varnish layer 700 is also arranged between the ink layer 400 and the metal layer 500. The varnish layer 700 can provide surface protection for the texture layer 300 on the one hand, and improve the surface gloss of the film on the other hand.

[0061] In one embodiment, the varnish layer 700 can be prepared by coating, and its material can be acrylic resin and a flexibilizer.

[0062] In one embodiment, the thickness of the varnish layer 700 can be 2–3 μm.

[0063] The decorative film 10 based on the above embodiments has the following advantages: First, it has excellent tensile properties, is easy to process and mold, easy to injection mold, and can be applied to decorations with complex shapes; second, it has excellent simulation, is suitable for decorative parts with wood grain and metal effects, has a good decorative effect, and can cover flow marks on the plastic surface during injection molding; third, it has a simple manufacturing process, low production cost, deeper decorative area, and can achieve inverted wrapping; fourth, it has excellent surface hardness, corrosion resistance, wear resistance, and damp heat resistance.

[0064] This application also provides a decorative piece using a decorative film employing any of the above embodiments; please refer to [link to relevant documentation]. Figure 4 , Figure 4 This is a structural schematic diagram of one embodiment of the decorative component of this application.

[0065] like Figure 4 As shown, the decorative element includes a base 20 and a decorative film 10 disposed on the surface of the base 20.

[0066] The substrate layer 100 of the decorative film 10 can be bonded to the substrate 20.

[0067] In one embodiment, the substrate 20 may be a plastic part obtained by injection molding.

[0068] In one embodiment, the decorative film 10 can be stretched after preparation, and inserts can be cut out according to the product shape. Then, the inserts are placed in the injection mold cavity and injection molded to obtain the decorative part of this embodiment.

[0069] Of course, in other embodiments, the substrate 20 can be made of other materials, and the decorative film 10 can also be attached and fixed to the surface of the substrate 20 by means of adhesive or other means, which can also achieve the effect of this embodiment.

[0070] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0071] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A decorative film sheet, characterized by, The decorative film sheet further comprises a high ductility layer arranged between the substrate layer and the texture layer, the high ductility layer having an elongation at break of 130-150%.

2. The decorative film sheet according to claim 1, characterized by The decorative film sheet further comprises a metal layer arranged between the texture layer and the ink layer.

3. The decorative film sheet according to claim 2, characterized by The metal layer is an indium layer or an indium-tin alloy layer; and / or, The metal layer has a thickness of 30-50 nm.

4. The decorative film sheet according to claim 2, characterized by The decorative film sheet further comprises a complementary color layer arranged between the metal layer and the ink layer, the complementary color layer having a thickness of 2-3 μm.

5. The decorative film sheet according to claim 2, wherein The decorative film sheet further comprises a varnish layer arranged between the metal layer and the ink layer, the varnish layer having a thickness of 2-3 μm.

6. The decorative film sheet according to claim 1, wherein The high ductility layer has a light transmittance of 20-70%; and / or, The high ductility layer has a thickness of 1-2 μm.

7. The decorative film sheet according to claim 1, wherein The substrate layer has a thickness of 200-300 μm; and / or, The substrate layer is a PC layer.

8. The decorative film sheet according to claim 1, wherein The texture layer has a thickness of 8-12 μm; and / or, The texture layer is a UV-cured glue layer.

9. The decorative film sheet according to claim 1, wherein The ink layer has a thickness of 10-12 μm; and / or, The ink layer has an elongation at break of 130-150%.

10. A trim piece, characterized by The decorative film sheet of any one of claims 1-9 is arranged on a surface of the base body. ​ ​

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