JP7404655B2 - Metallic decorative sheets, metallic decorative boards, and metallic decorative parts - Google Patents

Description

The present invention relates to a decorative sheet used for the surfaces of interior decoration members, furniture, kitchen units, etc., and particularly to a decorative sheet , a decorative board, and a decorative member with a metallic design.

2. Description of the Related Art Decorative sheets used for the interior of buildings and houses are generally made of synthetic resin sheets with patterns such as wood grain patterns, stone grain patterns, and abstract patterns printed on them. Various glosses and textures are reproduced on the surface of decorative sheets depending on the purpose.For example, in a living room, the gloss may be lowered to create a calm atmosphere, or in a kitchen, etc., to create a luxurious feel. A high-gloss paint-like mirror finish is also used.

A decorative material made by hairline polishing a stainless steel plate or an aluminum plate is sometimes used as a decorative member, but when using metal itself, there are problems in workability and cost, as well as the problem of heavy weight. Therefore, various attempts have been made to achieve a metallic appearance, particularly a hairline finish, in decorative sheets.

The metallic decorative sheet described in Patent Document 1 is a transparent thermoplastic resin layer with a hairline-shaped embossing on its surface, and a first sheet with a metal foil or metal vapor deposited layer provided on the back side of the layer via an adhesive, and a heat-treated sheet. This is a decorative sheet that is bonded to a second sheet made of plastic resin via an adhesive.

The metal-like decorative sheet described in Patent Document 1 is not only disadvantageous in terms of cost because it uses actual metal foil or metal vapor deposition layer, but also the hairline expression by embossing is unsatisfactory compared to the real thing. There was something.

The metallic decorative sheet described in Patent Document 2 has a hairline or a large number of fine grooves formed by spin processing on the back side of a transparent synthetic resin film, and further includes a primer layer, a metal thin film layer, a glittering pigment-containing colored layer, and a makeup layer. This is a metallic decorative sheet made of laminated layers.

The metal-like decorative sheet described in Patent Document 2 has a smooth outermost surface, whereas an actual hairline processed product has minute irregularities on the outermost surface, so the texture when viewed under oblique light is completely different. It is something. Hairline processing also has the problem of high processing costs.

The metallic decorative sheet described in Patent Document 3 includes at least a synthetic resin base sheet, a metal foil layer with a fine polished pattern on one side, and a transparent synthetic resin layer made of an amorphous crystalline polyester resin. This is a metallic decorative sheet provided in this order.

The metal-like decorative sheet described in Patent Document 3 uses metal foil that has been actually hairline-processed, so it looks like the real thing at first glance, but in addition to cost issues, Similar to the metal-like decorative sheet, since the outermost surface is smooth, there is a similar problem in that the texture differs when viewed under oblique light.

Japanese Patent Application Publication No. 8-216334 Japanese Patent Application Publication No. 2001-1444 Japanese Patent Application Publication No. 2005-343114

The problem to be solved by the present invention is to propose a metallic decorative sheet that has a surface appearance similar to a hairline-treated metal plate without using metal foil or metal vapor deposition film.

As a means for solving the above problem, the invention according to claim 1 provides a pattern layer, an adhesive layer, and a transparent thermoplastic resin layer on the surface of a thermoplastic resin colored raw material layer having a primer layer on the back surface. , a decorative sheet having a top coat layer, and a gloss-adjusting top coat layer in this order, wherein the thermoplastic resin colored original fabric layer is mainly composed of a polyolefin thermoplastic resin, and the transparent thermoplastic resin layer is mainly composed of a polypropylene resin. The top coat layer and the gloss adjustment top coat layer are made of a thermosetting resin, an ultraviolet curable resin, an electron beam curable resin, or a mixture of two or more selected from these, and the pattern layer is A pattern imitating a hairline processed surface of a metal surface is printed using a printing ink containing a bright component, and the pattern has a width of 0.05 mm or more and 0.1 mm or less and a length of 1.0 mm or more. The gloss-adjusting top coat layer is made up of linear pattern-free parts of 15 mm or less, and is arranged irregularly so that there is one or more pattern-free parts per 1 mm width. The pattern is 5 mm or less in thickness and 100 mm or less in length, and is formed in a pattern that is a combination of patterns with fluctuations in thickness and length. It is a decorative sheet.

The metal-like decorative sheet according to the present invention can obtain an appearance similar to a hairline-treated metal surface only by printing without using metal foil or metal vapor deposition film.

Moreover, the invention according to claim 2 is a metallic decorative board or metallic decorative member in which the metallic decorative sheet according to claim 1 is bonded to an arbitrary base material.

The metal-like decorative sheet according to the present invention has a specific hairline-like pattern printed using printing ink containing a glittering component, and a gloss-adjusting top coat layer is further provided in a specific pattern on the top coat surface, which is the outermost surface. As a result, it was possible to obtain an appearance similar to an actual hairline-processed metal plate.

Conventionally, even if a hairline is reproduced as a pattern using glitter pigments such as aluminum pigments or pearl pigments and printed, there is no change in the way it shines, resulting in a flat expression that looks like a print, and is different from the actual metal. It was far from the aesthetic quality of the hairline. Olefin-based decorative sheets used for various building materials often have a transparent thermoplastic resin layer laminated on the surface to protect the printed pattern, but a metallic hairline pattern is printed and a transparent thermoplastic resin layer is pasted on the surface. Even when the layers were glued together, the design did not resemble the actual metal hairline. In the present invention, a transparent thermoplastic resin layer is bonded to the surface of the product printed with a hairline pattern, and a top coat layer is provided on top of the transparent thermoplastic resin layer to form a pattern with specific characteristics. By creating a lustrous change pattern, we were able to reproduce the hairline of real metal. A distinctive pattern is one that reproduces the polishing unevenness when polishing metal with a pattern of changing gloss, and the hairline pattern printing and the changing pattern of gloss on the surface combine to reproduce the hairline of real metal. did it.

Furthermore, because the metallic decorative sheet according to the present invention has a patterned gloss-adjusting top coat layer on the outermost surface, it does not have a smooth surface even when viewed under oblique light, unlike conventional metallic decorative sheets. The sense of discomfort caused by the difference from the actual metal plate has disappeared.

Furthermore, since the metal-like decorative sheet according to the present invention does not use actual metal foil or metal vapor deposition film, it also has the effect that it does not cause radio wave interference due to the shielding effect caused by these.

FIG. 1 is a schematic cross-sectional view showing the layer structure of an embodiment of the metallic decorative sheet according to the present invention. FIG. 2 is a schematic cross-sectional view of a metallic decorative board in which the metallic decorative sheet shown in FIG. 1 is bonded to a base material using an adhesive.

The metallic decorative sheet according to the present invention will be described in detail below with reference to the drawings. FIG. 1 is a schematic cross-sectional view showing the layer structure of an embodiment of the metallic decorative sheet according to the present invention. The metallic decorative sheet 1 according to the present invention has a pattern layer 3, an adhesive layer 4, a transparent thermoplastic resin layer 5, and a top coat layer on the surface of a thermoplastic resin colored original fabric layer 2 having a primer layer 8 on the back surface. 6. A decorative sheet having gloss-adjusting top coat layers 7 in this order.

The thermoplastic resin colored original fabric layer 2 is formed into a sheet by forming a resin composition containing a polyolefin thermoplastic resin such as polyethylene resin or polypropylene resin as the main component, to which coloring pigments, fillers, stabilizers, etc. are added. Use the one you made.

A picture pattern layer 3 is printed on the surface of the thermoplastic resin colored raw material layer 2 using a printing ink containing a glittering component. The printing method may be arbitrary such as rotogravure printing, screen printing, inkjet printing, etc., but rotogravure printing is most suitable. As the glittering component, glittering aluminum pigments, pearl pigments, synthetic pearl pigments, etc. can be used.

The pattern layer 3 is a pattern imitating a hairline processed surface of a metal surface printed using printing ink containing a glitter component, and the pattern has a width of 0.05 mm or more and 0.1 mm or less and a length of 0.05 mm or more and 0.1 mm or less. It is composed of linear pattern-free parts with a length of 1.0 mm or more and 15 mm or less, and it is necessary to arrange them irregularly so that there is one or more part without a pattern per 1 mm of width.

A transparent thermoplastic resin layer 5 is provided on the picture pattern layer 3 via an adhesive layer 4. The transparent thermoplastic resin layer 5 is made of a resin composition containing polypropylene resin as the main component and optionally additives such as stabilizers, ultraviolet absorbers, and light stabilizers, which is formed into a film and dried. They may be bonded together by a lamination method, or they may be bonded to a base layer by an extrusion lamination method in which the resin composition is extruded from a T-die of an extruder and simultaneously laminated.

When forming the transparent thermoplastic resin layer 5 by extrusion lamination, a twin-screw extruder may be used to simultaneously form two layers of adhesive resin and surface resin by coextrusion. In this case, the adhesive layer 4 may be omitted.

A top coat layer 6 and a gloss adjustment top coat layer 7 are provided on the surface of the transparent thermoplastic resin layer 5. These resins may be thermosetting resins, ultraviolet curable resins, electron beam curable resins, or a mixture of two or more selected from these resins. The gloss adjustment top coat layer 7 has a lower gloss than the top coat layer 6, and its pattern has a thickness of 5 mm or less and a length of 100 mm or less, and is a combination of patterns with fluctuations in thickness and length. Form into a pattern.

FIG. 2 is a schematic cross-sectional view of a metallic decorative board in which the metallic decorative sheet shown in FIG. 1 is bonded to a base material using an adhesive. As the base material layer 10, in addition to wood base materials such as plywood, MDF (medium density wood fiberboard), and particle board, arbitrary materials such as steel plates and synthetic resin plates can be used as the base material.

A decorative board made by laminating a metal-like decorative sheet to a wood base material may be made into a three-dimensional member by V-cutting, or the decorative sheet may be laminated to a base material processed into a three-dimensional shape by a wrapping method. . Further, when a metal plate is used as the base material, it may be formed into a three-dimensional member by bending or roll forming after bonding. The metallic decorative sheet according to the present invention will be specifically described below based on Examples.

A pigment-containing random polypropylene resin sheet with a thickness of 70 μm was used as the thermoplastic resin coloring material layer, and a metal hairline pattern was printed on the surface by gravure printing using urethane resin gravure ink (Lamister manufactured by Toyo Ink Co., Ltd.) as the pattern layer. Printed. A hairline pattern consists of a linear missing part with a width of 0.05 mm or more and 0.1 mm or less and a length of 1.0 mm or more and 15 mm or less, so that there is one or more part without a pattern per 1 mm of width. They are arranged irregularly.

A homopolypropylene resin film having a thickness of 70 μm was laminated as a transparent thermoplastic resin layer on the picture pattern layer by a dry lamination method using an adhesive. An acrylic urethane resin-based two-component curing resin (manufactured by DIC Graphics) was applied to the surface of the transparent thermoplastic resin layer to a thickness of 6 μm as a top coat layer, and a top coat layer was further applied as a gloss adjustment top coat layer. A combination of patterns with a thickness of 5 mm or less and a length of 100 mm or less, with fluctuations in thickness and length, was created using a gravure printing method using a matte top coat agent made by adding silica to the acrylic urethane resin used. A metal-like decorative sheet was produced by forming a pattern.

<Comparative example>
As a comparative example, a metallic decorative sheet was produced in the same manner as in Example 1, except that the gloss-adjusting top coat layer was not provided.

Ten evaluators evaluated the metallic hairline design of the decorative sheets of Examples and Comparative Examples.
<Evaluation criteria>
Number of people who said it was good: 0...×
Number of people who said it was good: 1 to 6 people...△
Number of people who said it was good: 7 to 10 people...〇The results are shown in Table 1.

Thus, it can be seen that many people feel that the metallic decorative sheet according to the present invention has a high metallic hairline design.

1...Metallic decorative sheet 2...Thermoplastic resin colored raw material layer 3...Picture pattern layer 4...Adhesive layer 5...Transparent thermoplastic resin layer 6...Top coat layer 7 ... Gloss adjustment top coat layer 8 ... Primer layer 9 ... Adhesive layer 10 ... Base material layer 20 ... Metallic decorative board

Claims (6)

A decorative sheet comprising, in this order, a pattern layer, an adhesive layer, a transparent thermoplastic resin layer, a top coat layer, and a gloss-adjusting top coat layer on the surface of a thermoplastic resin colored original fabric layer having a primer layer on the back side, ,
The thermoplastic resin coloring material layer is made of polyolefin thermoplastic resin, the transparent thermoplastic resin layer is made of polypropylene resin, and the top coat layer and gloss adjustment top coat layer are made of thermosetting resin, ultraviolet curable resin, or electron beam. Consisting of any curable resin or a mixture of two or more selected from these,
The pattern layer has a pattern imitating a hairline processed surface of a metal surface printed using a printing ink containing a glittering component, and the pattern has a width of 0.05 mm or more and a length of 0.1 mm or less. is composed of linear patternless parts of 1.0 mm or more and 15 mm or less, and is arranged irregularly so that there is one or more part without a pattern per 1 mm width,
The gloss adjustment top coat layer has a lower gloss than the top coat layer, and its pattern has a thickness of 5 mm or less and a length of 100 mm or less, and is a pattern that combines patterns with fluctuations in thickness and length. It was formed in
A metallic decorative sheet characterized in that the pattern layer contains a glittering aluminum pigment as a glittering component. The metallic decorative sheet according to claim 1 , wherein the transparent thermoplastic resin layer is made of homopolypropylene resin. 3. The metallic decorative sheet according to claim 1, wherein the gloss-adjusting top coat layer is made of an acrylic urethane resin containing silica. 4. The metallic decorative sheet according to claim 3 , wherein the top coat layer is made of acrylic urethane resin. A metallic decorative board obtained by laminating the metallic decorative sheet according to any one of claims 1 to 4 on an arbitrary base material. A metallic decorative member comprising the metallic decorative sheet according to any one of claims 1 to 4 bonded to an arbitrary base material.

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