JPH0515078U - Decorative adhesive sheet - Google Patents

Abstract

(57) [Summary] [Purpose] To obtain a pressure-sensitive adhesive sheet for decoration that exhibits a unique decorative effect on both the front surface side and the back surface side. [Structure] An adhesive layer 3 is formed on one surface of a decorative substrate 2 made of an opaque resin sheet, and a colorant is partially formed on the surface of the adhesive layer 3 opposite to the side on which the decorative substrate 2 is formed. A decorative pressure-sensitive adhesive sheet 1 having a decorative design layer 4 made of

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a decorative adhesive sheet for adhering to a window or the like made of glass for decoration, and in particular, a single decorative adhesive sheet can exhibit different decorative effects on the front surface side and the back surface side. An adhesive sheet for decoration.

[0002]

[Prior Art]

 Conventionally, various decorative pressure-sensitive adhesive sheets have been known. This type of decorative adhesive sheet is constructed by providing an adhesive layer on one surface of a decorative substrate made of an opaque, transparent or translucent resin sheet. Then, the portion to be decorated is attached by using the adhesive force of the pressure-sensitive adhesive layer, and the decorative effect is exhibited by the color of the surface side of the decorative base material, the pattern given to the surface side, and the like.

[0003]

[Problems to be solved by the device]

 The conventional decorative pressure-sensitive adhesive sheet as described above only exerts a decorative effect due to the color of the surface side of the decorative base material and the pattern formed on the surface side, and the back surface side is covered only by the pressure-sensitive adhesive layer. It was only configured to stick to the body. Therefore, when a conventional decorative pressure-sensitive adhesive sheet is attached to a transparent adherend such as window glass, it is possible to exert a decorative effect on the surface side with a decorative base material. When observed from the back surface of the glass, that is, the surface opposite to the surface on which the glass decorative sheet is attached, the color of the adhesive layer and the back surface of the decorative base material are exposed, and any decorative effect is exhibited. Was not demonstrated. Not only that, because a decorative pressure-sensitive adhesive sheet for applying a decorative effect is attached, on the contrary, not only the decorative effect is not exerted on the opposite side of the glass, but it may even give a complicated and dirty impression. It was

An object of the present invention is to provide a decorative pressure-sensitive adhesive sheet that can exert a decorative function not only on the front surface side but also on the back surface side in a single decorative pressure-sensitive adhesive sheet.

[0005]

[Means for Solving the Problems]

 The decorative pressure-sensitive adhesive sheet of the present invention has an adhesive layer formed on one surface of a decorative substrate made of an opaque resin sheet, and a decorative design layer made of a colorant is provided on the surface of the adhesive layer. It is characterized by

[0006]

[Action]

 The decorative pressure-sensitive adhesive sheet of the present invention is affixed to a portion to be decorated by the pressure-sensitive adhesive layer formed on one surface of the decorative substrate, and in that case, when observed from the surface side, it is made of an opaque resin sheet. The decorative base material exerts a decorative effect. Further, on the back surface side, since the adhesive layer is provided with the decorative design layer made of the colorant as described above, when it is attached to a transparent adherend such as a window glass, the decorative design layer is formed. The decorative design effect of layers is exhibited.

That is, in the decorative pressure-sensitive adhesive sheet of the present invention, both the front surface side and the back surface side exhibit the decoration function.

[0008]

[Explanation of Examples]

 Hereinafter, embodiments of the present invention will be described with reference to the drawings to clarify the present invention. FIG. 1 is a partially cutaway sectional view showing a decorative pressure-sensitive adhesive sheet according to an embodiment of the present invention. In the decorative pressure-sensitive adhesive sheet 1, a pressure-sensitive adhesive layer 3 is provided on one surface of a decorative base material 2 made of an opaque resin sheet. A decorative design layer 4 made of a coloring agent is partially formed on the surface of the adhesive layer 3 opposite to the side on which the decorative base material 2 is laminated.

The decorative base material 2 is a portion that exerts a decorative effect from the surface side when the decorative pressure-sensitive adhesive sheet 1 is attached to the surface to be decorated using the pressure-sensitive adhesive layer 3. Therefore, the decorative base material 2 is composed of an opaque resin sheet configured to exert a desired decorative effect. As the resin sheet that can be used, any of thermoplastic resin sheets such as vinyl chloride, polyolefin and polyethylene terephthalate can be used, but a sheet made of vinyl chloride having good castability is used. preferable.

Further, in order to color the decorative base material 2 to exert a decorative effect, a resin pigment having excellent weather resistance such as peridene, isoindolinone, polyazoquinacridone or cyanine, or an opaque resin is added to the resin. Titanium oxide or the like is added to improve the properties. The compounding amount may be about 10 to 100 parts by weight, preferably about 10 to 50 parts by weight, by synthesis of the organic pigment and titanium oxide based on 100 parts by weight of the resin content. Furthermore, the decorative base material may be configured to have a decorative pattern. Further, characters, patterns, etc. may be displayed on the surface side of the decorative base material 2 by printing or the like.

On the other hand, since the pressure-sensitive adhesive layer 3 is provided for sticking the decorative base material 2 to a portion to be decorated, it may be a general acrylic or rubber-based pressure-sensitive adhesive. It can be configured using any one. However, from the viewpoint of weather resistance, it is preferable to use an acrylic adhesive. The adhesive layer 3 may be transparent or opaque. However, when observed from the back surface side, the adhesive layer 3 is exposed around the decoration design layer 4 described below, so that the back surface of the decorative base material 2 is used as the background of the decoration design layer 4. When used, it is preferable to use the pressure-sensitive adhesive layer 3 having transparency, and when it is desired to hide the back surface side of the decorative substrate 2, the opaque pressure-sensitive adhesive layer 3 may be formed.

The decorative design layer 4 has a decorative effect when the decorative pressure-sensitive adhesive sheet 1 is attached to a transparent adherend such as glass using the pressure-sensitive adhesive layer 3 and observed from the back side. It is provided to make the most of it. Therefore, the color and plane shape of the decorative design layer 4 can be appropriately changed according to the desired decoration. The color of the decorative design layer 4 is achieved by forming the decorative design layer 4 with a coloring agent. The colorant that can be used is not particularly limited, but since it is supported by the pressure-sensitive adhesive layer 3, it is necessary to use a colorant made of a material that is not attacked by the pressure-sensitive adhesive layer 3. For example, colorants such as perylene, cyanine, nisoindrin, carbon black and polyazoquinacridone are preferably used.

The decorative base material 2 is usually about 20 to 100 μm, preferably about 50 μm in thickness, the adhesive layer 3 is about 10 to 50 μm, preferably about 30 μm, and the decorative design layer 4 is It is about 1 to 3 μm. The decorative design layer can be formed by, for example, flexographic printing, offset printing, screen printing, letterpress printing, or the like.

The function and effect of the decorative pressure-sensitive adhesive sheet 1 of the present embodiment will be described with reference to FIG. 2 assuming that it is attached to glass. In FIG. 2, the decorative pressure-sensitive adhesive sheet 1 of this example is attached to one surface 5a of the glass 5. In addition, in FIG. 2, a part of the pressure-sensitive adhesive layer 3 is illustrated as partially floating from the one surface 5 a of the glass due to the thickness of the decorative design layer 4. Since the thickness of the layer 4 is as thin as about 1 to 3 μm, the unevenness as shown in the figure hardly occurs on the surface of the adhered decorative pressure-sensitive adhesive sheet 1.

In the decorative pressure-sensitive adhesive sheet 1 of this example attached to the glass 5, when observed from the front side as shown by the arrow A, an opaque resin sheet as shown in FIG. The decorative base material 2 is observed, and the decorative function of the decorative base material 2 is exhibited. On the other hand, when observed from the back side as shown by the arrow B, the decorative design layer 4 is observed through the glass 5 as shown in FIG. 3 (b), so that the decorative function of the decorative design layer 4 is exhibited. It

As described above, in the decorative pressure-sensitive adhesive sheet 1 of this example, both the front surface side and the back surface side exhibit the decorative effect. Next, the step of forming the decorative design layer 4 will be clarified by explaining an example of the method for producing the decorative pressure-sensitive adhesive sheet 1 of the above-mentioned embodiment.

First, as schematically shown in FIG. 4, a release paper 6 made of paper or synthetic resin and treated with silicone or the like so that the surface thereof has releasability from the adhesive layer is passed through a roll 7. Supply. In this case, as the release paper 6, the decorative design layer 4 (see FIG. 3B) is formed on one surface in advance by printing a coloring agent. Then, when passing through the rolls 8 and 9, the adhesive 10 is applied onto the surface on which the decorative design layer is formed. Then, the release paper 6 coated with the adhesive is sent out between the rolls 11 and 12. On the other hand, the decorative base material 2 prepared separately is supplied to the rolls 11 and 12, and the decorative base material 2 and the release paper 6 having the adhesive layer formed thereon are laminated between the rolls 11 and 12. The laminated body 13 is obtained. FIG. 5 shows a partially cutaway sectional view of the laminated body 13 formed in this manner.

As is apparent from FIG. 5, a laminated body 13 in which the decorative pressure-sensitive adhesive sheet 1 of the above-described example is laminated on the release paper 6 is formed. When used, the release paper 6 is peeled off to obtain the decorative pressure-sensitive adhesive sheet 1 shown in FIG. In the above embodiment, the decorative design layer was formed by printing a coloring agent on one surface of the release paper 6 whose surface was treated with silicon or the like, and was transferred to the adhesive layer 3 side. As long as transfer is possible, the decorative design layer 4 may be composed of ink or pigment itself, or may be a mixture of ink or pigment with an adhesive.

If the decorative design layer 4 is composed of a colorant mixed with an adhesive, the decorative design layer 4 itself has adhesiveness, so that the adhesiveness of the decorative adhesive sheet 1 to an adherend is enhanced. be able to. Further, since the sticking property is enhanced, it is possible to form the decorative design layer 4 so as to occupy a considerably large area. That is, even when the area of the decorative design layer 4 is larger than the exposed area of the adhesive layer 3, the decorative adhesive sheet 1 can be reliably attached to the adherend.

As the pressure-sensitive adhesive mixed with the colorant as described above, the general acrylic or rubber-based pressure-sensitive adhesive as described above can be appropriately used.

[0021]

[Effect of the device]

 As described above, according to the present invention, the decorative effect of the decorative base material on the front side is exhibited when observed from the front side, and the decorative effect is exhibited by the decorative design layer when observed from the back side. A decorative pressure-sensitive adhesive sheet is provided. Therefore, when the decorative pressure-sensitive adhesive sheet of the present invention is attached to a transparent adherend such as glass, the decorative effect is exerted on both sides of the glass, and the decoration is effectively performed. It is also possible to prevent the back side from having a complicated and dirty impression.

[Brief description of drawings]

FIG. 1 is a partially cutaway sectional view showing a pressure-sensitive adhesive sheet for decoration according to an embodiment of the present invention.

FIG. 2 is a partially cutaway cross-sectional view showing a state in which the decorative pressure-sensitive adhesive sheet of the example is attached to glass.

FIG. 3A is a schematic front view showing a state in which the decorative pressure-sensitive adhesive sheet of the example is observed from the front side, and FIG. 3B is a rear side of the decorative pressure-sensitive adhesive sheet attached to glass or the like. The rear view which shows the state observed from FIG.

FIG. 4 is a schematic diagram for explaining a process of manufacturing the decorative pressure-sensitive adhesive sheet of the example.

FIG. 5 is a partially cutaway cross-sectional view showing a decorative pressure-sensitive adhesive sheet of an embodiment laminated on release paper.

[Explanation of symbols]

 1 ... Adhesive sheet for decoration 2 ... Decoration base material 3 ... Adhesive layer 4 ... Decoration design layer

Claims (1)

[Scope of utility model registration request] 1. A pressure-sensitive adhesive layer is formed on one surface of a decorative substrate made of an opaque resin sheet, and the surface of the pressure-sensitive adhesive layer comprises:
A decorative adhesive sheet provided with a decorative design layer made of a colorant.