JP6027412B2 - Laminate and method for imparting decorativeness - Google Patents

Description

  The present invention relates to a laminate and a method for imparting decorativeness.

Conventionally, improvement and diversification of decorative properties have been studied by processing the laminated body by various methods. The laminate is applied for uses such as interior materials, wrapping paper, and packaging bags.
For example, Patent Literature 1 describes a glittering hologram decoration sheet. This glittering hologram decoration sheet is a laminate in which a base sheet, a polyester layer, a light reflection layer, a picture layer, and a hologram embossing layer are sequentially laminated. According to Patent Document 1, after applying a transparent room-temperature curable resin to the pattern layer, it is shaped using a hologram embossing plate, and after drying and curing, the uneven surface of the hologram embossing layer is sharpened. Is described as being possible.

  Patent Document 2 describes a laminate used for a tube container. This laminate is configured by laminating an inner surface resin layer, a surface printing projection layer, a three-dimensional decorative resin layer, and a surface printing in this order. The surface printing is formed by printing characters, patterns, etc. on the three-dimensional decorative resin layer. According to Patent Document 2, a shadow of a surface printing character or pattern is projected onto the surface of the metal foil layer in the surface printing projection layer, and the character or pattern overlaps with the projected shadow with some deviation. It is described that the characters and patterns printed on the surface can be expressed three-dimensionally.

JP-A-6-55633 JP 2010-234719 A

  By the way, in recent years, from the viewpoint of further improvement and diversification of decorative properties, there has been a demand for a laminate having a novel decorative property different from the laminate described in Patent Document 1 and Patent Document 2.

  The present invention is to provide a laminate having a novel decorative property and a method for imparting a decorative property.

The laminate of the present invention is
A substrate;
And a surface pattern layer having a pattern which is made form by using the ultraviolet ray curable transparent ink for inkjet printers on one surface of the substrate,
An adhesive layer formed on the other surface of the base material ,
The substrate is colored with one color,
The height of the convex part of the surface design layer is 13 μm or more and 495 μm or less,
The thickness of the adhesive layer, characterized in that Ru der than 300μm or less 1 [mu] m.
The laminate of the present invention is
A substrate;
A surface pattern layer having a pattern formed on one surface of the substrate using an ultraviolet curable transparent ink for an inkjet printer;
An adhesive layer formed on the other surface of the substrate;
An underlayer colored with one color provided between the base material and the surface pattern layer,
The height of the convex part of the surface design layer is 13 μm or more and 495 μm or less,
The thickness of the pressure-sensitive adhesive layer is 1 μm or more and 300 μm or less.
It is characterized by that.

The decorativeness imparting method of the present invention is
On one surface of the base material colored with one color, a pattern having a height of a convex portion of 13 μm or more and 495 μm or less is inkjet printed using an ultraviolet curable transparent ink for an inkjet printer ,
A pressure-sensitive adhesive is applied to the other surface of the substrate to form a pressure-sensitive adhesive layer having a thickness dimension of 1 μm to 300 μm .
In addition, the decorative property imparting method of the present invention includes:
The base layer colored with one color formed on one surface of the substrate is inkjet printed with a pattern having a height of 13 μm or more and 495 μm or less using a UV curable transparent ink for an inkjet printer,
A pressure-sensitive adhesive is applied to the other surface of the substrate to form a pressure-sensitive adhesive layer having a thickness dimension of 1 μm to 300 μm.
It is characterized by that.

Since the laminate of the present invention includes a surface design layer formed of a transparent ink on a base material, the light hitting the surface design layer depends on the angle at which the laminate is viewed or the angle of light hitting the laminate. The way of reflection changes, and the impression of the design and the laminate changes greatly. Therefore, according to the present invention, it is possible to provide a laminate having a novel decorative property, which has not existed before.
In the present invention, the term “transparency” in the transparent ink includes a case of being colorless and transparent and colored and transparent. Further, in the present invention, the symbols include pictures, illustrations, photographs, patterns, etc., and are different from those printed in a so-called solid shape.

  Moreover, since the decorativeness imparting method of the present invention prints a design on a substrate using a transparent ink, like the above-described laminate of the present invention, the appearance of the design and the impression of the laminate are It varies depending on the viewing angle. Therefore, according to the decorative property imparting method of the present invention, it is possible to impart a novel decorative property to the laminate, which has not existed before.

It is sectional drawing of the laminated body which concerns on embodiment of this invention.

Embodiment
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a cross-sectional view of a laminate 1 according to this embodiment.
The laminate 1 is formed on the base material 2, the base layer 3 formed on one surface of the base material 2, the surface design layer 4 formed on the base layer 3, and the other surface of the base material 2. The pressure-sensitive adhesive layer 5 is provided. Thus, the laminate 1 is a decorative pressure-sensitive adhesive sheet having a decorative property by the surface design layer 4 and a pressure-sensitive adhesive property by the pressure-sensitive adhesive layer 5.

As the base material 2, synthetic resin such as polyvinyl chloride resin, polyester resin (polyethylene terephthalate, etc.), acrylic resin, polycarbonate resin, polyethylene resin, polypropylene resin, acrylonitrile / butadiene / styrene resin, polyimide resin, polyurethane resin, polystyrene resin, etc. Paper materials such as films, high-quality paper, impregnated paper, glassine paper, and coated paper, and sheet materials and plate-like materials such as nonwoven fabric and wood can be used.
The substrate 2 may be transparent, or a colored substrate colored using a colorant such as a pigment or a dye. Moreover, you may provide opacity to the base material 2 as a foaming state which has a space | gap.

The thickness dimension of the base material 2 is not specifically limited, For example, 3 micrometers or more and 10 mm or less are preferable, and 5 micrometers or more and 1 mm or less are especially preferable. If the thickness is less than 3 μm, the thickness of the base material 2 is weak because the thickness is thin, and the base material 2 in the formation process of the base layer 3, the surface design layer 4, and the pressure-sensitive adhesive layer 5 is insufficient in hardness. In some cases, the various processing steps may be hindered because the above functions cannot be performed. If the thickness exceeds 10 mm, the thickness increases and the stiffness is too strong, and it may be difficult to wind into a long roll, or the weight may increase.
The shape of the substrate 2 is not particularly limited, but is final such as a rectangular shape such as a square or a rectangle, a polygonal shape such as a triangle, pentagon, or hexagon, a circular shape, an elliptical shape, an indefinite shape, or a long roll shape. Various selections may be made depending on the application of the product, and in the present embodiment, it is formed in a rectangular shape.

The foundation layer 3 is a layer colored between one or more colors provided between the base material 2 and the surface design layer 4, and the design may be printed thereon. The pattern includes paintings, illustrations, photographs, patterns, and the like.
The underlayer 3 can be formed, for example, by a method such as printing, printing, application of paint, transfer from a transfer sheet, vapor deposition, sputtering, or the like. An undercoat layer such as an easy adhesion coat for forming the underlayer 3 or a gloss adjusting coat may be formed on one surface of the substrate 2. The underlayer 3 may be formed on the entire surface of the substrate 2 or may be partially formed. As a printing method of the underlayer 3, it can be appropriately selected from those exemplified in the transparent ink printing method described later.

The surface design layer 4 is a layer formed by printing a design on the base layer 3 using a transparent ink. The design includes paintings, illustrations, photographs, patterns, and the like, and is partially printed unlike what is so-called solid.
As shown in FIG. 1, the surface design layer 4 preferably has a concavo-convex shape composed of a plurality of convex portions 41 and concave portions 42. The height of the convex portion 41 is preferably 1 μm or more and 5 mm or less, more preferably 5 μm or more and 3 mm or less, further preferably 8 μm or more and 2 mm or less, and particularly preferably 13 μm or more and 1 mm or less. If the height of the convex portion 41 is 1 μm or more, the design can be recognized, and if it is 5 μm or more, the design can be clearly recognized depending on the angle at which the laminate 1 is viewed, and the viewing angle changes. As a result, a change in appearance such that the design can be seen or difficult to see occurs, and a novel decorative property that is not conventionally provided is imparted to the laminate 1. Furthermore, if the height dimension of the convex part 41 is 8 μm or more, in addition to the decorativeness by the above-mentioned design, a vivid glossy feeling is obtained, and if it is 13 μm or more, a shadow when exposed to light, etc. The three-dimensional effect is obtained. Further, if the height dimension of the convex portion 41 exceeds 5 mm, the protruding portion becomes high, and the convex portion 41 may be chipped when touched by a finger or hit by an object.

The transparent ink preferably has good adhesiveness, moisture resistance, heat resistance and the like in addition to light transmittance.
Further, it is preferable that the transparent ink exhibits an appropriate hardness after curing. For example, as the transparent ink, one obtained by dissolving one or more film-forming components such as a transparent polymer or wax in a solvent or the like can be appropriately used.
The transparent ink may be an ink using an aqueous solvent as a solvent, an ink using an organic solvent, or the like.
The transparent ink may be an ultraviolet curable ink curable with ultraviolet rays, a room temperature curable ink curable at room temperature, a moisture curable ink curable with moisture, a heat curable ink curable by heating, or the like. Among these, the ultraviolet curable ink is preferable in that a large number of print layers can be laminated, the surface design layer 4 can be formed quickly, and further, no solvent is contained. The ultraviolet curable ink includes a reactive monomer, a resin, a pigment, a dispersant, an additive (stabilizer, surfactant), a polymerization initiator, and the like. Examples of the reactive monomer include cationic monomers and radical monomers, and radical monomers such as acrylate and vinyl ether are particularly preferable. Examples of the resin include one or more of acrylate resins such as polyol acrylate resins, polyester acrylate resins, urethane acrylate resins, and epoxy acrylate resins, methacrylate resins, polyol (meth) acrylate resins, rosin-modified phenol resins, alkyd resins, and the like. It can be appropriately selected and used. Examples of the polymerization initiator include benzophenone-based, benzoin-based, acetophenone-based, and thioxanthone-based compounds.
The transparent ink may be colorless and transparent or colored and transparent.

  Examples of the method for printing the transparent ink include an inkjet printing method, an offset printing method, a flexographic printing method, a gravure printing method, a silk screen printing method, and a relief printing method. Among these printing methods, the inkjet printing method is preferable because it can handle a small number of lots and can be accurately laminated. A pattern such as a picture, an illustration, a photograph, or a pattern is created in advance as digital data such as image data or vector data, and the surface pattern layer 4 is formed by printing transparent ink by, for example, an ink jet printing method using the digital data. It is preferable to form and impart decorativeness to the laminate.

  The design of the surface design layer 4 may be formed at a position corresponding to a part or the whole of the design of the base layer 3. The surface design layer 4 is formed of transparent ink on the design of the underlayer 3 so that the design of the underlayer 3 can be viewed three-dimensionally or the design of the underlayer 3 can be given a glossy appearance. The added value of the laminated body 1 can be increased.

  The pressure-sensitive adhesive layer 5 is for bonding the laminate 1 to an adherend. The pressure-sensitive adhesive layer 5 is provided on the surface of the substrate 2 opposite to the surface on which the base layer 3 is provided. The pressure-sensitive adhesive layer 5 is not particularly limited and can be widely applied as long as it has sufficient adhesive strength to adhere the laminate 1 to the adherend. For example, rubber-based, acrylic-based, silicone-based, urethane And polyester-based pressure-sensitive adhesives can be used. Among these, acrylic pressure-sensitive adhesives are preferable because they are balanced in terms of adhesive strength and durability. Although the thickness dimension of the adhesive layer 5 is not specifically limited, For example, 1 micrometer or more and 300 micrometers or less are preferable, and 5 micrometers or more and 150 micrometers or less are still more preferable. By making the thickness dimension of the pressure-sensitive adhesive layer 5 300 μm or less, it is possible to prevent the thickness dimension of the entire laminated body 1 being conveyed from becoming excessively large. Affixing to can be facilitated. By setting the thickness dimension of the pressure-sensitive adhesive layer 5 to 1 μm or more, a sufficient adhesive force to the adherend can be imparted.

  The laminate 1 is preferably a pressure-sensitive adhesive sheet having a decorative property and adhesiveness. As its use, the laminate 1 is used for interiors such as walls, windows, ceilings, pillars, and transparent materials such as glass and transparent plastic. It can be used for decoration, used for signs, used for marking vehicles and automobiles, and used for small items.

Next, the manufacturing method of the laminated body 1 which concerns on this embodiment, and the decorating method are demonstrated.
The base layer 3 is printed on one surface of the substrate 2 by an ink jet printer.
Next, a design is printed on the base layer 3 using a transparent ink to form the surface design layer 4. The surface design layer 4 is also formed by an ink jet printer. The transparent ink is preferably an ultraviolet curable ink. By using the UV curable transparent ink, the surface pattern layer 4 is instantly formed into a film by curing, so that the height dimension of the convex portion 41 can be increased and the surface pattern layer 4 can be made thicker. .
An adhesive is applied to the other surface of the substrate 2 to form the adhesive layer 5. It is preferable that a release sheet is bonded to the surface of the pressure-sensitive adhesive layer 5 as a protective member until the laminate 1 is used. The release sheet is not particularly limited, and for example, the sheet material or the plate-like material described in the base material 2 can be used. The release sheet may utilize the peelability of the constituent material itself, or may be provided with peelability by forming a release treatment layer. The release treatment layer is not particularly limited. For example, olefinic thermoplastic elastomer, polyolefin resin such as polyethylene and polypropylene, fluorine resin such as tetrafluoroethylene, silicone resin, long chain alkyl resin, long chain alkyl It is formed by applying a release agent composed of a group-containing carbamate resin, an alkyd resin, or a mixture thereof onto the surface of the release sheet.

According to the laminated body 1 which concerns on this embodiment, there exist the following effects.
Depending on the angle of viewing the laminate 1 and the angle of light striking the laminate 1 by the surface design layer 4 formed of the transparent ink of the laminate 1, the way of reflection of the light hitting the surface design layer 4 changes, The design of the surface design layer 4 and the underlayer 3 and the impression of the laminate 1 are greatly changed. For example, depending on the angle at which the laminate 1 is viewed, the appearance of the pattern changes variously, such as faint recognition or clear recognition. Thus, according to the laminated body 1, the decoration which utilized the three-dimensional design using the shadow of light, and the color and pattern of the base layer 3 is attained.
Therefore, according to the laminated body 1, the laminated body which has the novel decoration which is not in the past can be provided.
Further, in the decorativeness imparting method according to the present embodiment, the base layer 3 is formed on the base material 2, and the design is printed on the base layer 3 using a transparent ink to form the surface design layer 4. Therefore, the appearance of the design varies depending on the viewing angle and the like. Therefore, according to the method for imparting decorativeness to the laminate 1, similarly to the above, it is possible to impart a novel decorative property that has not existed in the past to the laminate.

<Modification>
It should be noted that the present invention is not limited to the above-described embodiments, and modifications, improvements, and the like within the scope that can achieve the object of the present invention are included in the present invention.

The laminate may be a printed material on which no pressure-sensitive adhesive layer is provided. For example, the printed material may be used by being attached to an adherend using an adhesive medium such as a double-sided tape or an adhesive.
Moreover, the laminated body in which the surface design layer was formed in both surfaces of the base material may be sufficient.

Moreover, although the said embodiment demonstrated and demonstrated as an example the laminated body in which the base layer was provided between the base material and the surface design layer, the laminated body without a base layer may be sufficient.
For example, it may be a colored base material in which the base material is colored, and a surface design layer may be formed by printing a design directly with transparent ink on the base material.
In addition, for example, a laminate in which a surface pattern layer is formed by printing a pattern, for example, a wood grain tone, on a transparent base material with a transparent ink, and placing the laminate on a wooden board is three-dimensional. This makes it possible to express a natural grain. Here, the wood grain is taken as an example, but other designs may be used.
Therefore, as a method for manufacturing a laminate having decorativeness, a process of printing a design using a transparent ink on a substrate may be provided.

EXAMPLES Next, although an Example is given and this invention is demonstrated further in detail, this invention is not restrict | limited to the description content of these Examples at all.
In this example, a design was printed on a pre-colored substrate under various printing conditions to form a surface design layer, and the decorativeness of the laminate was confirmed.

<Example 1>
The base material used was a black decorative adhesive sheet (product name: Palois PMO-022) manufactured by Lintec Sign System Co., Ltd., having a 1220 mm width and a roll shape of 30 m. On the black surface of the sheet, a pattern was printed in A4 size (vertical length 297 mm × horizontal 210 mm) using ultraviolet curable transparent ink. The design used was a butterfly, flower, and checkered pattern. In addition, it was set as the design which provided the line | wire in the stripe form in each square shape (length 10mm x width 10mm) which comprises the checkered pattern lattice. As the transparent ink, a UV curable ink for inkjet printers (product name: UV-IJ INK LL391 CLEAR 600ML) manufactured by Fuji Film Co., Ltd. was used. For printing the transparent ink, an inkjet printer (product name: Accuracy LED 1600) manufactured by Fuji Film Graphic Systems Co., Ltd. was used. The printing conditions by the ink jet printer were set as shown in Table 1.

  The height dimension of the convex part of the formed surface design layer was measured. The dimension measurement results are shown in Table 1.

<Examples 2 to 13>
The laminates of Examples 2 to 9 were produced in the same manner as the laminate of Example 1 except that the printing conditions were changed as shown in Table 1.
As shown in Table 1, the laminates of Examples 10 to 13 were the same as the laminate of Example 1 except that a silver base was used as the base and the printing conditions were changed as shown in Table 1. It was made. The silver base material was a silver-colored adhesive sheet for decorative use (product name: Palois PME-335) manufactured by Lintec Sign System Co., Ltd., and had a roll shape of 1220 mm width and 30 m roll.

<Evaluation of laminate>
The laminates of Examples 1 to 13 were observed while changing the viewing angle, and the decorativeness was evaluated. Evaluation was performed based on the following criteria.
A: There are vivid glossiness and three-dimensionality.
B: There is a vivid glossiness.
C: The symbol can be clearly recognized depending on the viewing angle.
D: A design can be recognized faintly.
Table 1 shows the evaluation results.

As shown in Table 1, at least the pattern can be recognized if the height is 2 μm or more, and the pattern is clearly recognized depending on the viewing angle if the height is 5 μm or more. I can do it now. Thus, by changing the viewing angle, it was confirmed that the appearance changed such that the design was visible or difficult to see, and a novel decorative property that was not found in the past was imparted to the laminate.
Furthermore, if it is the height dimension of the convex part of 8 μm or more, it can be recognized that a vivid glossiness is obtained in addition to the decorativeness by the above-mentioned pattern, and if the height dimension of the convex part is 13 μm or more, It was confirmed that the three-dimensional effect was recognized by the shadow generated by the light hitting the unevenness, and that a new decorative property that was not found in the past was imparted to the laminate.

  The laminate of the present invention is a novel decoration for various uses such as interior materials (walls, ceilings, pillars), signboards, marking films (vehicles, railways, ships, aircraft), glass, panels, bran, wrapping paper, packaging bags, etc. It can be used to give sex.

DESCRIPTION OF SYMBOLS 1 ... Laminated body 2 ... Base material 3 ... Underlayer 4 ... Surface design layer 41 ... Convex part 42 ... Concave part 5 ... Adhesive layer

Claims (4)

A substrate;
And a surface pattern layer having a pattern which is made form by using the ultraviolet ray curable transparent ink for inkjet printers on one surface of the substrate,
An adhesive layer formed on the other surface of the base material ,
The substrate is colored with one color,
The height of the convex part of the surface design layer is 13 μm or more and 495 μm or less,
The thickness of the adhesive layer, laminate wherein the Ru der than 300μm or less 1 [mu] m. A substrate;
A surface pattern layer having a pattern formed on one surface of the substrate using an ultraviolet curable transparent ink for an inkjet printer;
An adhesive layer formed on the other surface of the substrate;
An underlayer colored with one color provided between the base material and the surface pattern layer,
The height of the convex part of the surface design layer is 13 μm or more and 495 μm or less,
The thickness of the pressure-sensitive adhesive layer is 1 μm or more and 300 μm or less.
A laminate characterized by the above. On one surface of the base material colored with one color, a pattern having a height of a convex portion of 13 μm or more and 495 μm or less is inkjet printed using an ultraviolet curable transparent ink for an inkjet printer ,
A decorativeness imparting method , comprising: applying a pressure-sensitive adhesive to the other surface of the substrate to form a pressure-sensitive adhesive layer having a thickness of 1 μm to 300 μm . The base layer colored with one color formed on one surface of the substrate is inkjet printed with a pattern having a height of 13 μm or more and 495 μm or less using a UV curable transparent ink for an inkjet printer,
A pressure-sensitive adhesive is applied to the other surface of the substrate to form a pressure-sensitive adhesive layer having a thickness dimension of 1 μm to 300 μm.
A method for imparting decorativeness.