Design film and decorative item pasted with design film

Abstract

To provide a design film and a decorative item capable of simplifying a production process while suppressing degradation of designability.SOLUTION: A design film includes a transparent film layer, a printed layer printed on the back surface of the transparent film layer by an inkjet printing method, and a transparent adhesive layer further laminated on the printed layer. The printed layer does not include a solid white printed layer. The transparent film layer is preferably made of an acrylic material. The decorative article is constructed by adhering the design film to the surface of a substrate to be covered. The surface to be covered is formed in white by a decorative layer that covers the surface of the substrate.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present disclosure relates to a decorative film and a decorative article to which the decorative film is attached. [Background technology]

[0002] Patent Document 1 discloses a technology relating to a laminate for flexible packaging materials manufactured by printing on an impermeable substrate using an inkjet ink system. In the laminate of this technology, an ink layer, an adhesive layer, and a substrate are laminated in this order on a transparent substrate, which is an impermeable substrate. The ink layer is formed by printing a cyan ink layer and a white ink layer in this order using an inkjet ink system. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2022-44189 Summary of the Invention [Problem to be solved by the invention]

[0004] In the laminate of Patent Document 1, a white ink layer, also called a white solid print layer, is printed to improve the color development of the cyan ink layer and the hiding power for the contents. If the lamination process of the white solid print layer is omitted for the purpose of simplifying the manufacturing process, the adhesive layer and the base material may be visible in the design, which may reduce the design quality.

[0005] The present disclosure has been made in consideration of the above-mentioned problems, and aims to provide a decorative film and a decorative article that can simplify the manufacturing process while minimizing deterioration of the design. [Means for solving the problem]

[0006] To solve the above problems, the first disclosure is applied to a design film. The design film comprises a transparent film layer, a printed layer printed on the back surface of the transparent film layer by inkjet printing, and a transparent adhesive layer further laminated on the printed layer. The printed layer does not include a solid white printed layer.

[0007] The second disclosure further includes the following features in addition to the first disclosure. The transparent film layer is a film made of an acrylic material.

[0008] The third disclosure is the first or second disclosure, further comprising the following features. The transparent adhesive layer is formed by applying a liquid adhesive by a non-contact application method or a contact application method.

[0009] The fourth disclosure is the first or second disclosure, further comprising the following features. The transparent adhesive layer is formed by applying a sheet-like adhesive by a bonding method.

[0010] The fifth disclosure is applied to a design article to solve the above-mentioned problems. The design article comprises the design film described in any one of the first to fourth disclosures and a substrate having a white attachment surface. The design film is attached to the substrate so that the transparent adhesive layer is in close contact with the attachment surface.

[0011] The sixth disclosure is the fifth disclosure, further comprising the following features. The substrate has a white decorative layer covering at least a portion of its surface, and the attachment surface is formed on the decorative layer.

[0012] The seventh disclosure is the fifth disclosure, further comprising the following features. At least the surface to be attached of the base material is made of a white material.

[0013] The eighth disclosure is any one of the fifth to seventh disclosures, further comprising the following features: The surface to be attached is flat. The decorative film is attached to the surface by lamination.

[0014] The ninth disclosure is any one of the fifth to seventh disclosures, further comprising the following features: The surface to be attached includes a three-dimensional curved surface. The decorative film is attached to the surface to be attached by insert molding, in-mold molding, or vacuum forming. [Effects of the Invention]

[0015] According to the design film of the first disclosure, a printed layer is laminated on the backside of a transparent film layer, eliminating the need for a surface protection layer, which is required in configurations where a printed layer is laminated on the surface. Also, because the adhesive layer is a transparent adhesive layer, reflections of the adhesive layer can be prevented even if the printed layer does not include a solid white printed layer.

[0016] According to the second disclosure, by using an acrylic film for the transparent film layer, high weather resistance and high transparency can be ensured. In addition, the acrylic film can be used to form a decorative film at a lower cost than a fluorine-based film.

[0017] According to the third disclosure, the transparent adhesive layer can be formed by a non-contact coating method or a contact coating method.

[0018] According to the fourth disclosure, a transparent adhesive layer can be formed by attaching a sheet.

[0019] According to the fifth disclosure, the decorative film is attached to a white surface. This makes it possible to enhance the color development of the printed layer even in decorative films that do not include a solid white printed layer.

[0020] According to the sixth disclosure, by molding the substrate from a white material, a white attachment surface can be formed without performing any special process.

[0021] According to the seventh disclosure, by forming a white decorative layer on a substrate, a white attachment surface can be formed regardless of the color of the substrate.

[0022] According to the eighth disclosure, a decorative film can be attached to a flat substrate by lamination molding.

[0023] According to the ninth disclosure, the decorative film can be attached to the surface even if the surface to be attached includes a three-dimensional curved surface. [Brief explanation of the drawings]

[0024] [Figure 1] A schematic diagram showing an example of a cross section of a design film of this embodiment. [Figure 2] 1 is a schematic diagram showing an example of a cross section of a decorative article according to the present embodiment. [Figure 3] 1 is a cross-sectional schematic diagram showing a first configuration example of a substrate of a decorative article of the present embodiment. FIG. [Figure 4] FIG. 2 is a cross-sectional schematic diagram showing a second configuration example of the substrate of the decorative article of the present embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0025] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. However, when the number, quantity, amount, range, etc. of each element is mentioned in the embodiments described below, this disclosure is not limited to the mentioned numbers unless otherwise specified or clearly specified in principle. Furthermore, structures, steps, etc. described in the embodiments described below are not necessarily essential to this disclosure unless otherwise specified or clearly specified in principle.

[0026] Embodiment 1. Configuration of the design film of this embodiment FIG. 1 is a schematic diagram showing an example of a cross section of a decorative film of this embodiment. The decorative film 10 of this embodiment is intended to impart a design by being attached to a surface 52 of a substrate 50 such as a building material. As shown in FIG. 1, the decorative film 10 is formed by laminating a transparent film layer 20, a printing layer 30, and a transparent adhesive layer 40 in this order. In the following description, the surface of the decorative film 10 facing the transparent film layer 20 is referred to as the front surface, and the surface facing the transparent adhesive layer 40 is referred to as the back surface. The structure of each layer that makes up the decorative film 10 will be described below.

[0027] 1-1.Transparent film layer 20 The transparent film layer 20 is a layer that forms the surface of the decorative film 10. The transparent film layer 20 is a film made of a transparent substrate that transmits visible light. For example, an acrylic material such as acrylic (PMMA) can be used as the material for such a transparent film layer 20. Alternatively, the transparent film layer 20 may be made of a material such as polyvinyl chloride (PVC), polyolefin (PO), polybutylene terephthalate (PBT), polyvinyl fluoride (PVF), polyvinylidene fluoride (PVDF), or a biomass-derived film.

[0028] The transparent film layer 20 has a thickness of, for example, about 50 μm or 75 μm. The surface of the transparent film layer 20 may be subjected to a surface treatment such as embossing.

[0029] 1-2. Printing layer 30 The printing layer 30 is a layer for adding designs such as letters and patterns to the design film 10. The printing layer 30 is back-printed onto the back surface of the transparent film layer 20 using an inkjet printing method. The thickness of the printing layer 30 is, for example, about 10 μm.

[0030] There is no limitation on the type of ink that can be used for the printing layer 30. In the printing layer 30 of this embodiment, for example, LED-curable inorganic ink is used. In addition, ink colors that can be used include, for example, cyan (C), magenta (M), yellow (Y), and black (K). By using cyan (C), magenta (M), and yellow (Y), a full-color design can be printed. Furthermore, by using black (K), the visibility of black designs such as letters is improved. Note that the printing layer 30 does not include a white solid printing layer. The white solid printing layer here refers to a printing layer that covers at least the back side of the design printing layer with white.

[0031] 1-3.Transparent adhesive layer 40 The transparent adhesive layer 40 is a layer that provides adhesive strength for attaching the design film 10 to the substrate and is made of a transparent material that transmits visible light. In other words, visible light is transmitted from the front surface to the back surface of the design film 10 in the areas of the printing layer 30 where no design is printed. The thickness of the transparent adhesive layer 40 is, for example, approximately 25 μm or 50 μm. There are no limitations on the method for forming the transparent adhesive layer 40 on the design film 10. For example, the transparent adhesive layer 40 may be formed by applying a liquid adhesive using a non-contact or contact application method. Alternatively, the transparent adhesive layer 40 may be formed by a sheet-attaching method in which a sheet-like adhesive sheet is attached. Examples of non-contact application methods include jetting. Examples of contact application methods include roll coaters, die coaters, and bar coaters. Examples of sheet-attaching methods include thermocompression bonding and room-temperature compression bonding.

[0032] 2. Configuration of the design article of this embodiment 2 is a schematic diagram showing an example of a cross section of the decorative article of this embodiment. The decorative article 100 of this embodiment is constructed by attaching a decorative film 10 to a substrate 50. The substrate 50 is a component that constitutes the shape of the decorative article 100, and examples thereof include building materials such as doors and furniture materials such as desk tops. Examples of materials for the substrate 50 include metals such as steel and aluminum, wood-based MDF, and resins such as PVC and ABS.

[0033] The substrate 50 has a white attachment surface 52 to which the decorative film 10 is attached. The attachment surface 52 may be flat or a three-dimensional curved surface. However, if the attachment surface 52 is a three-dimensional curved surface, it must have a curved shape that allows the decorative film 10 to be attached in close contact.

[0034] In the decorative article 100 of this embodiment, the attachment surface 52 of the substrate 50 is configured to be white, thereby making it possible to omit the white solid print layer of the decorative film 10. Below, several configuration examples of the substrate 50 having a white attachment surface 52 will be described.

[0035] 2-1. First Configuration Example of the Base Material 50 3 is a cross-sectional schematic diagram showing a first configuration example of the substrate of the design article of this embodiment. As the first configuration example, the substrate 50 has at least a portion of its surface covered with a white decorative layer 54. The white decorative layer 54 is a white layer formed on the surface of the substrate 50 by a process such as painting, plating, printing, or coloring. There is no limitation on the method for forming the white decorative layer 54. The surface of the white decorative layer 54 includes the attachment surface 52.

[0036] The decorative film 10 is attached to the surface 52 to be attached to the surface of the white decorative layer 54. As described above, the decorative film 10 of this embodiment does not have a solid white print layer. Because the transparent film layer 20 and transparent adhesive layer 40 of the decorative film 10 transmit visible light, the substrate 50 with the white decorative layer 54 performs the same function as the solid white print layer of the decorative film 10. This allows the decorative article 100 to have a clear design. Furthermore, since the substrate color of the substrate 50 with the white decorative layer 54 is not limited, there is greater freedom in selecting and manufacturing the substrate 50. Furthermore, if the substrate color of the substrate 50 is a transparent color, the white decorative layer 54 can improve concealment.

[0037] 2-2. Second Configuration Example of the Base Material 50 4 is a cross-sectional schematic diagram showing a second configuration example of the substrate of the design article of the present embodiment. In the second configuration example, substrate 50 has a white substrate color in at least the region including attachment surface 52. This configuration can be applied to resin parts and the like for which the substrate color can be freely selected.

[0038] The design film 10 is attached to the white attachment surface 52. This allows the base material 50 of the second configuration example to perform the same function as the white solid print layer of the design film 10.

[0039] 3. How to attach Next, a method for attaching the decorative film 10 to the substrate 50 will be described. When the surface 52 to be attached is flat, the decorative film 10 is attached to the substrate 50 by, for example, lamination molding. In lamination molding here, attachment can be performed using known techniques such as thermocompression bonding or room temperature compression bonding. Alternatively, when the surface 52 to be attached is a three-dimensional curved surface, the film can be attached to the substrate using known techniques such as insert molding, in-mold molding, or vacuum forming.

[0040] 4. Effects The decorative film and decorative article configured as described above provide the following actions and effects.

[0041] 4-1. Inkjet printing method The printed layer 30 is printed on the design film 10 using inkjet printing. Since inkjet printing does not require printing plates, it can accommodate on-demand order production without setting minimum production numbers. This reduces inventory of intermediate products.

[0042] 4-2. Backing printing The decorative film 10 has a printed layer 30 backed and printed on the back surface of the transparent film layer 20. This eliminates the need to provide a protective layer to protect the printed layer 30 on the surface of the decorative film 10. This reduces the number of manufacturing steps for the decorative film 10 and cuts costs.

[0043] 4-3.Transparent film layer An acrylic film can be used for the transparent film layer 20. This ensures high weather resistance and high transparency. In addition, the acrylic film can be used to form a decorative film at a lower cost than a fluorine-based film.

[0044] 4-4.Transparent adhesive layer The decorative film 10 has a transparent adhesive layer 40. As a result, even if the printed layer 30 does not include a solid white printed layer, by adhering it to the white attachment surface 52 of the base material 50, it can achieve the same effect as if it had a solid white printed layer.

[0045] 4-5. Base material In the design article 100, the substrate 50 including the attachment surface 52 can be made of a white material. This allows the white attachment surface 52 to be formed without any special process.

[0046] Furthermore, in the design article 100, the attachment surface 52 of the substrate 50 can be covered with a white decorative layer 54. This allows the attachment surface 52 to be white regardless of the color of the substrate. [Explanation of symbols]

[0047] 10 Design film 20 transparent film layers 30 printing layer 40 Transparent adhesive layer 50 Base material 52 Adhesive surface 54 White decorative layer 100 Design articles

Claims

1. A transparent film layer; a printed layer printed on the back surface of the transparent film layer by an inkjet printing method; a transparent adhesive layer further laminated on the printing layer, The printed layer is a design film that does not include a solid white printed layer.

2. The decorative film according to claim 1, wherein the transparent film layer is an acrylic film.

3. 3. The decorative film according to claim 1, wherein the transparent adhesive layer is formed by applying a liquid adhesive by a non-contact application method or a contact application method.

4. 3. The decorative film according to claim 1, wherein the transparent adhesive layer is formed by applying a sheet-like adhesive by a bonding method.

5. The decorative film according to claim 1 or claim 2; a substrate having a white attachment surface; A decorative article in which the decorative film is attached to the substrate so that the transparent adhesive layer is in close contact with the surface to be attached.

6. the substrate has a white decorative layer covering at least a portion of its surface; 6. The decorative article according to claim 5, wherein the attachment surface is formed on the decorative layer.

7. 6. The decorative article according to claim 5, wherein at least the surface to be attached of the substrate is made of a white material.

8. The surface to be attached is flat, The decorative article according to claim 5, wherein the decorative film is attached to the surface by lamination molding.

9. the surface to be attached includes a three-dimensional curved surface; The decorative article according to claim 5, wherein the decorative film is attached to the surface by insert molding, in-mold molding, or vacuum forming.

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