JP2013252706A - Decorative sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an easily manufacturable and hard-to-damage decorative sheet hardly causing deterioration of a decorative effect even if it is adhered with stain such as human hand grease.SOLUTION: In a decorative sheet 1', photo-curing resin having translucency is applied on a surface of a resin film 3' having translucency to form a coating layer, an uneven layer 5' formed with minute uneven parts is formed on a surface of the coating layer, and a light reflection layer 6' is formed on a surface of the uneven layer. The resin film is a shrink film having a shrink function, and it is adhered to a decoration object so that reflection is carried out by the light reflection layer to decorate the decoration object by light refracted by the uneven layer.

Description

  The present invention relates to a decorative sheet that is bonded to the surface of an object to be decorated and performs a bright decoration such as a hologram on the object to be decorated.

As a decorative sheet for decorating the surface of an object, a primer layer is formed on one surface of a substrate sheet, and a concave / convex forming layer having a fine concave / convex shape such as a hologram is formed on the surface of the primer layer. A transfer sheet for surface decoration has been proposed in which a reflective layer is formed on the surface of a layer in a peelable state and an adhesive layer is formed on the reflective layer (Patent Document 1).
And when decorating using this transfer sheet for surface decoration, the decorative sheet is adhered to the surface of a decoration object such as a plastic molded article by an adhesive layer, and then the base sheet is peeled off. The reflective layer formed in the fine uneven shape is transferred to the surface of the decoration object.

JP 2004-358925 A

When a decoration object is decorated using the above-described conventional surface decoration transfer sheet, a fine uneven shape such as a hologram is exposed on the surface of the decoration object after the transfer, and the reflection layer is formed by this fine uneven shape. The reflected light appears in a color and image peculiar to the hologram and exhibits a decoration effect, which is advantageous in that the decoration effect can be easily achieved. However, since the fine uneven shape is exposed on the surface of the decoration object, the fine unevenness is buried when the grease of human hands adheres, and the color and the image are lost or the fine unevenness is easily damaged. There were drawbacks.
In addition, the conventional transfer sheet for surface decoration is difficult to reduce the cost because it is complicated to form a concavo-convex forming layer having a fine concavo-convex shape such as a hologram on the surface of the primer layer, and is difficult to provide at a low cost. It was.

  The present invention has been proposed in view of the above-described circumstances, and the object thereof is an easy-to-manufacture, decorative sheet that is less likely to be damaged even if dirt such as human hand fat adheres, and is less likely to be damaged. Is to provide.

The present invention has been proposed in order to achieve the above-described object. In the present invention, a light-curing resin is applied to the surface of a light-transmitting resin film. Forming a coating layer, forming a concavo-convex layer having fine irregularities on the surface of the coating layer, and forming a light reflecting layer on the surface of the concavo-convex layer,
The resin film is a shrink film having a shrink function,
The decorative sheet is characterized in that the decorative object can be decorated with light that is attached to the decoration object, reflected by the light reflection layer, and refracted by the uneven layer.

According to a second aspect of the present invention, an adhesive layer is formed on the light reflecting layer,
The decorative sheet according to claim 1, wherein the decorative sheet can be adhered to a decoration object by the adhesive layer.

  According to a third aspect of the present invention, there is provided the decorative sheet according to the first or second aspect, wherein the fine irregularities are irregularities of a hologram structure.

  According to the first aspect of the present invention, a light curable resin is applied to the surface of the light transmissive resin film to form a coating layer, and fine irregularities are formed on the surface of the coating layer. Since the light-reflective layer is formed on the surface of the uneven layer, the resin film is exposed on the outermost side and the fine unevenness of the hologram structure of the uneven layer is formed inside the uneven layer. There is a light reflecting layer in the back of the fine irregularities. Therefore, when light strikes the decoration object, the decoration object can be decorated with a sparkling light by the light reflected by the light reflection layer and refracted by the uneven layer. For this reason, the decorative sheet can be simply applied to the surface of the object to be decorated so that a glittering hologram can be easily applied.After the application, the surface of the resin film is exposed and the fine irregularities are inside. Because it exists, even if oil or dirt on the hands adheres, it is possible to prevent damage from being damaged by protecting the resin film, as well as not having the disadvantage that the fine irregularities are filled with hand oil and dirt and reducing the decorative effect. . In addition, since the resin film is a shrink film having a shrink function, for example, the resin film is shrunk in a state where a decorative sheet is wound around a plastic bottle so that the shape of the bottle is a curved shape such as a bowl shape. It can be made to fit and can be decorated even more visually.

  According to invention of Claim 2, since the contact bonding layer was formed on the said light reflection layer, and it was made possible to adhere | attach to a decoration target object by the said contact bond layer, it adhere | attaches a decoration sheet to a decoration target object reliably. Can do.

  According to the third aspect of the present invention, since the fine irregularities are constituted by the irregularities of the hologram structure, a decorative effect peculiar to the hologram can be exhibited, and a security effect peculiar to the hologram can also be expected.

(A) is sectional drawing before adhesion | attachment of the sheet | seat for decoration, (b) is sectional drawing of the state which adhere | attached the decoration target object and peeled and removed the resin film. (A) is sectional drawing before adhesion | attachment of a decoration sheet, (b) is sectional drawing of the state adhere | attached on the decoration target object.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
The decorative sheet 1 shown in FIG. 1 is of a type that is used by being transferred to the surface of a decoration object 2 such as a plastic molded product or a poster, and by applying a release agent to the smooth surface of the resin film 3. A release agent layer 4 is formed, and a light curable resin having translucency is applied on the release agent layer 4 to form an uneven layer 5 in which fine unevenness is transferred to the surface of the coating layer. A metal such as aluminum is vapor-deposited on the surface, and the light reflection layer 6 is finely formed according to the shape of the fine irregularities, and the adhesive layer 7 is formed on the light reflection layer 6.

  The resin film 3 functions as a base sheet, and for example, PET (polyethylene terephthalate), PP (polypropylene), PS (polystyrene), PC (polycarbonate), a film, or the like can be used. Then, a release agent layer 4 is formed by applying a release agent to one surface of the resin film 3.

  The release agent may be any component as long as the concavo-convex layer 5 to be described later has a function of smoothly peeling from the surface of the resin film 3, but typical examples include a silicone-based release agent and a fluorine-based release agent. Agents, surfactants and the like.

  In order to transfer the fine unevenness to the surface of the release agent layer 4 to form the unevenness layer 5, first, a photocurable resin such as an ultraviolet curable resin is applied on the resin film 3, and transferred to this application surface. A film, for example, a translucent transfer film having a hologram structure with fine irregularities formed in advance on the surface is coated, and the fine irregularities are closely adhered to the UV curable resin coating surface, and ultraviolet rays of an ultraviolet lamp are irradiated in this adhesion polymerization state. Then, the ultraviolet curable resin is cured, and thereafter, the transfer film is peeled off to form the concavo-convex layer 5 onto which the fine concavo-convex is transferred on the release agent layer 4 of the resin film 3.

  In addition, since the above-mentioned transfer film is endlessly ring-shaped and stretched between rollers and rotated, after peeling off from the cured uneven layer 5, it is returned to the polymerization position and adhered to the next UV curable resin coating surface again. Can be used repeatedly. The fine irregularities are not limited to the irregularities of the hologram structure, and may be embossed, hairline, or other appropriate diffraction gratings as long as the irregularities are decorative. Thus, when the said manufacturing method which transfers the unevenness | corrugation of a transfer film to photocuring resin is taken, the uneven | corrugated layer 5 is simply formed using the resin film which has the smooth surface normally marketed, and the sheet | seat 1 for decoration In addition to being easy to manufacture, it also contributes to a reduction in manufacturing costs. As will be described later, since the resin film 3 is peeled off from the decoration object after use, it can be reused, and this is also economical.

Next, the light reflection layer 6 will be described.
The light reflection layer 6 is a layer that imparts a mirror-like reflection function (brightness) to the surface of each concavo-convex state in close contact with the concavo-convex shape of the concavo-convex layer 5, and specifically, aluminum or titanium oxide. It is a bright layer on which a metal such as zinc sulfide is deposited. In addition, since a metal vapor deposition layer can be coated as a thin film having the same thickness with high accuracy even if it is fine unevenness, the shape of the fine unevenness can be maintained with high accuracy and there is no risk of lowering the resolution of holograms and the like. . The light reflecting layer 6 may have any configuration as long as it has a function of reflecting light. For example, the light reflecting layer 6 may be composed of zinc sulfide or may be totally reflected by a transparent thin film.

  Once the light reflecting layer 6 is formed, an adhesive is then applied to the surface of the light reflecting layer 6 to form the adhesive layer 7. The adhesive layer 7 is preferably pasted with an easily mountable sheet until use.

  When the decorative sheet 1 having the above-described configuration is used, the adhesive sheet 7 is peeled off from the mount and applied by pressing the adhesive layer 7 on the surface of the decoration object 2, and the entire surface of the sheet is pressed with a roller to be securely bonded. After that, the resin film 3 is peeled and removed with the release agent layer 4 as a boundary to leave the uneven layer 5 and the light reflection layer 6 on the decoration object 2 side. As long as the decorative transfer sheet can be securely bonded, any decoration object 2 may be used, not limited to a flat surface, and may be bonded to a curved surface portion. For example, a plastic molded product having a curved surface or a beverage can having a curved surface may be used.

In this way, when the decorative sheet 1 is attached to the surface of the decoration object 2 and the resin film 3 is peeled and removed, the smooth surface of the concavo-convex layer 5 is exposed, and a hologram structure is formed behind (inside) the smooth surface. There are fine irregularities, and the light reflecting layer 6 exists behind the fine irregularities. Therefore, when light strikes the decoration object 2, the light passes through the uneven layer 5 and is reflected by the light reflecting layer 6, and the reflected light is refracted by the uneven layer 5 to give a hologram-like glittering decorative effect. Demonstrate. For this reason, the decoration sheet 1 can be simply decorated with a glittering hologram only by performing an operation of sticking on the surface of the decoration object 2 and peeling off the resin film 3.
And after decorating, since the smooth surface of the uneven layer 5 is exposed and fine irregularities exist inside, even if hand grease or dirt adheres, the fine irregularities are filled with hand grease or dirt. There is no inconvenience of losing the hologram decoration effect, and the inconvenience that fine irregularities are damaged can be reduced. Further, when the decoration object 2 decorated with the decorative sheet 1 is discarded, the resin of the uneven layer 5 left on the surface is thin, so that it does not interfere with the incineration process and is discarded as burning garbage. can do. Furthermore, since the exposed surface is smooth, post-processing such as printing and foil stamping can be easily performed.

  The decorative sheet 1 described above is a transfer type in which the resin film 3 is peeled and removed after adhering to the decoration object 2. However, as will be described later, the release agent layer 4 is omitted from the above, and the resin film 3 may be left as it is.

  The decorative sheet 1 ′ shown in FIG. 2 is used while being attached to the decoration object 2 ′, and a light curable resin is applied to the surface of the light transmissive resin film 3 ′. Then, an uneven layer 5 ′ having fine unevenness formed on the surface of the coating layer is formed, a light reflecting layer 6 ′ is formed on the surface of the uneven layer 5 ′, and an adhesive layer 7 ′ is formed on the light reflecting layer 6 ′. Is formed. Since the resin film 3 ′ is left different from the above, the surface of the resin film 3 ′ is preliminarily printed to enhance the decorative effect and design, and the surface of the resin film 3 ′ is transparent. An uneven layer 5 ′ in which fine unevenness is formed on the surface of the coating layer by applying a photocurable resin having light properties may be formed. The uneven layer 5 ′ is preferably formed on the printing surface of the resin film 3 ′ because the printing ink 8 does not wear, but the opposite non-printing surface may be used.

  When using the decorative sheet 1 ′ having the above-described configuration, the adhesive layer 7 is pressed against the surface of the decoration object 2 ′, and is adhered firmly by pressing the entire surface of the sheet with a roller, Unlike the above, the resin film 3 ′ is also left on the decoration object 2 ′ side together with the uneven layer 5 ′ and the light reflection layer 6 ′. As long as the decorative sheet 1 ′ can be securely bonded, any decoration object 2 ′ may be used, and the decorative sheet 1 ′ is not limited to a flat surface, and may be bonded to a curved surface portion. When decorating by decorating the decorative sheet 1 'on the curved surface portion of the decoration object 2', for example, when decorating the decorative sheet 1 'around a plastic bottle, the resin film 3' has a shrink function. It is desirable to use a thing (shrink film). If it does so, it can be made to shrink by heating in the state which wound decorative sheet 1 'around the PET bottle, and even if the shape is a curved surface shape such as a bowl shape, it can fit the shape of the bottle. Can decorate well.

When the decorative sheet 1 ′ is adhered to the surface of the decoration object 2 ′ in this way, the resin film 3 ′ is exposed on the outermost side, and the fine unevenness of the hologram structure of the uneven layer 5 ′ is present inside the resin film 3 ′. A light reflection layer 6 ′ is present in the back of the fine irregularities. Therefore, when light strikes the decoration object 2 ′, the light is reflected from the light-transmitting resin film 3 ′ through the uneven layer 5 ′ and reflected by the light reflecting layer 6 ′, and the reflected light is reflected from the uneven layer 5 ′. By refracting, it produces a glittering glittering decorative effect. For this reason, the decoration sheet 1 ′ can be simply decorated so that a brilliant hologram can be seen simply by sticking it on the surface of the decoration object 2 ′.
And after pasting, since the resin film 3 'is exposed on the surface and protects the fine irregularities present inside, even if grease or dirt on the hands adheres, the fine irregularities are filled with hand oil or dirt and the hologram Needless to say, there is no inconvenience of losing the decorative effect, and it is also possible to prevent damage by protecting the resin film 3 '. Further, when the uneven layer 5 ′ is formed on the printing surface of the resin film 3 ′, it is possible to prevent tampering of the printed portion, and also has an anti-counterfeiting effect due to the hologram, so that excellent security can be expected. The function can be demonstrated.

  In addition, the decorative sheet 1, 1 'according to the present invention is not the entire surface of the resin film 3, 3' in the first and second embodiments described above, in part, that is, It is applied only to a predetermined portion set in advance, and the uneven layers 5 and 5 'are formed on a part of the resin films 3 and 3'. Only a part of the decoration objects 2 and 2 ′ that form 5 ′ can be a decoration in which a hologram pattern can be seen. Therefore, for example, when the poster is the decoration object 2, the uneven layers 5 and 5 ′ may be set so as to overlap only the portion (characters or the like) to be emphasized on the poster so as to give contrast. .

DESCRIPTION OF SYMBOLS 1,1 '... Sheet for decoration, 2, 2' ... Decoration object, 3, 3 '... Resin film, 4, 4' ... Release agent layer, 5, 5 '... Uneven layer, 6, 6' ... Light reflection Layer, 7, 7 '... adhesive layer, 8 ... printing ink

Claims (3)

On the surface of the resin film having translucency, a photocurable resin having translucency is applied to form a coating layer, and a concavo-convex layer having fine irregularities is formed on the surface of the coating layer. A decorative sheet having a light reflecting layer formed on the surface,
The resin film is a shrink film having a shrink function,
A decorative sheet characterized in that the decorative object can be decorated with light that is attached to the decorative object and reflected by the light reflecting layer and refracted by the uneven layer. Forming an adhesive layer on the light reflecting layer;
The decorative sheet according to claim 1, wherein the decorative sheet can be adhered to a decoration object.   The decorative sheet according to claim 1, wherein the fine unevenness is an unevenness of a hologram structure.

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