JPH0725810Y2 - hologram - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a hologram, and relates to a hologram which enhances the safety against forgery and falsification and enhances the design effect.

[Prior Art] In recent years, in the publishing or printing industries, the covers of books and magazines, illustrations, gifts, novelties, or securities,
Holograms have been widely used as a means for preventing forgery of credit cards and IC cards. A hologram of this type (for example, a hologram transfer foil) usually has a release layer and a protective layer formed on a substrate, a hologram forming layer formed on the protective layer, and a hologram image is formed on the hologram forming layer by embossing. It is formed by further forming a metal reflection (deposition) layer and an adhesive layer on the hologram forming layer. Here, the formation of the hologram forming layer is conventionally performed by a coating method such as roll coating or blade coating. In this case, the hue of the hologram is usually only one of gold and silver.

[Problems to be solved by the invention] Recently, with the spread of holograms in a wide range of fields as described above, the security against forgery and falsification is further strengthened, and the interestingness of the design is further increased. Requests are coming out. However, conventional holograms
Since its hue is usually only one of gold and silver, it is the actual situation that it does not sufficiently meet such a demand.

The present invention has been made to solve the above-mentioned problems, and an object thereof is to provide a hologram having an extremely excellent design effect while further enhancing the safety against forgery and falsification. To do.

[Means for Solving the Problems] In order to achieve the above-mentioned object, in the present invention, a peeling layer formed on a substrate and a peeling layer formed on the peeling layer via a protective layer if necessary, and a reaction layer are formed. In a hologram including a hologram forming layer on which a hologram image is formed by embossing on the peeling layer side and a metal reflecting layer formed on the hologram forming layer, the hologram forming layer is made of at least 2 different materials. A plurality of types of resins are used, and the respective resins are printed and formed in a desired pattern so that the thicknesses of the respective resins are substantially the same.

[Operation] Therefore, in the hologram of the present invention, at least two kinds of resins having different colors are used as the material for the hologram forming layer, and the respective resins are desired to have substantially the same thickness. Since the hologram forming layer itself has a certain pattern by printing and forming with the pattern, it is extremely difficult to forge or falsify, and the design effect can be remarkably enhanced.

Further, in the case of the hologram transfer foil, since there is no step in the hologram layer, problems such as bubbles do not occur during stamping.

Further, since the hologram surface is flat, it is possible to obtain a hologram having an extremely beautiful finish.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a sectional view showing a configuration example of a hologram transfer foil according to the present invention. In FIG. 1, a release layer 2 is formed on a substrate 1 made of a PET film or the like, and a protective layer 3 is formed on the release layer 2. A hologram forming layer 4 is formed on the protective layer 3, and a hologram image 5 is formed on the opposite side of the hologram forming layer 4 from the protective layer 3 by embossing. Further, on the embossed image 5 of the hologram forming layer 4, for example, Al or the like is vapor-deposited to form a metal reflection (vapor deposition) layer 6, and an adhesive layer 7 is formed on the metal reflection layer 6. . Here, the hologram forming layer 4 uses two types of resins having different colors, for example, a yellow resin and a transparent resin as its layer forming material, and these resins have substantially the same thickness as shown in the drawing. A desired pattern (in this example, A pattern 4A and B pattern 4B) is formed by printing, for example, by a gravure printing method so as to have a thickness of about 0.5 to 5 μm in this example. Is partially changed to two hues in a desired pattern.

FIG. 2 is a plan view showing a state after the hologram transfer foil having the above structure is transferred. That is, after the A pattern 4A is gravure-printed with the yellow resin and the B pattern 4B is gravure-printed, the metal reflection layer 6 is formed by depositing Al or the like, so that the A pattern 4A becomes gold and the B pattern 4B becomes silver. It is possible to obtain a hologram that appears as a result and has a partially changed hue.

Therefore, in the hologram transfer foil having such a configuration, the hologram forming layer 4 is made of two kinds of resins having different colors (yellow resin and transparent resin) as the layer forming material, and these resins have substantially the same thickness. The desired pattern (A pattern 4A, B pattern 4B) is formed by the gravure printing method so that the thickness of the hologram forming layer 4 is the same as the desired pattern 4A, 4B. Two
By partially changing the color, forgery or falsification becomes extremely difficult because the hologram forming layer 4 itself has a certain pattern.

That is, more specifically, a portion composed of the substrate 1 / peeling layer 2 / protective layer 3 / hologram forming layer 4A / metal reflective layer 6 and the substrate 1
/ Peeling layer 2 / Protective layer 3 / Hologram forming layer 4B of another color / Metal reflective layer 6 is present, and hologram forming layer 4A and hologram forming layer 4B of another color have substantially the same thickness. If the surface is smooth and smooth, the emboss can be formed uniformly over the entire hologram forming layer 4, so that the original hologram image 5 cannot be faithfully reproduced, and as a result, forgery or tampering is extremely difficult. It will be Also, because a hologram transfer foil in which gold and silver are mixed is made,
The design effect will be significantly enhanced. Furthermore, in the case of the hologram transfer foil, since there is no step in the hologram layer, problems such as bubbles do not occur during stamping. In addition, the hologram surface is flat, so the finish is extremely beautiful.

As described above, in this embodiment, the release layer 2 formed on the substrate 1, the protective layer 3 formed on the release layer 2, and the anti-protective layer 3 formed on the protective layer 3. The hologram forming layer 4 on which the hologram image 5 is formed by the embossing process, the metal reflecting layer 6 formed on the hologram image 5 of the hologram forming layer 4, and the adhesive layer formed on the metal reflecting layer 6. In the hologram transfer foil consisting of 7 and
The hologram forming layer 4 uses two kinds of resins of different colors (yellow resin and transparent resin) as its layer forming material, and these resins are gravure printed by a gravure printing method so that they have almost the same thickness. By printing and forming with a desired pattern (A pattern 4A, B pattern 4B), the hue of the hologram forming layer 4 is partially changed to two hues of gold and silver with a certain pattern 4A, 4B. is there.

Therefore, since the hologram forming layer 4 itself has a certain pattern, it is possible to make counterfeiting and falsification extremely difficult as compared with the conventional hologram transfer foil.

That is, substrate 1 / peeling layer 2 / protection layer 3 / hologram forming layer 4A
/ A part consisting of the metal reflective layer 6 and the substrate 1 / peeling layer 2 / protective layer 3
/ Hologram forming layer 4B of another color / Metal reflective layer 6 is formed, and the hologram forming layer 4A and the hologram forming layer 4B of another color have almost the same thickness and have good smoothness. Therefore, since the emboss can be formed uniformly over the entire hologram forming layer 4, the original hologram image 5 cannot be faithfully reproduced, and as a result, forgery or falsification can be extremely difficult. Become. Moreover, since a hologram transfer foil in which two color layers of gold and silver are mixed can be obtained, it is possible to remarkably enhance the design effect. Further, in the case of the hologram transfer foil, since there is no step in the hologram layer, there is no problem that bubbles or the like are generated during stamping. Further, since the hologram surface is flat, the finished state can be made extremely beautiful.

In the above embodiment, the metal reflection (deposition) layer 6 is formed by depositing Al.
Although the case where the metal reflective layer is formed is described, the metal reflective layer may be formed by sputtering Al instead of the above.

In addition, in the above-mentioned embodiment, the case where Al is vapor-deposited to form the metal reflection (vapor-deposited) layer 6 has been described.
May be vapor-deposited or sputtered to form the metal reflective layer.

Further, in the above-mentioned embodiment, the case where the hologram forming layer 4 is formed by using two kinds of resins having different colors (yellow resin and transparent resin) has been described, but the present invention is not limited to this, and three or more kinds of resins having different colors. It is also possible to obtain a hologram in which gold, silver, metallic colors and the like are mixed by forming a hologram forming layer using.

[Effects of the Invention] As described above, according to the present invention, a peeling layer formed on a substrate, a protective layer formed on the peeling layer if necessary, and an embossing on the side opposite to the peeling layer. In a hologram comprising a hologram forming layer on which a hologram image is formed by processing and a metal reflecting layer formed on the hologram forming layer, the hologram forming layer is made of at least two kinds of resins having different colors as materials. Since each of the resins is formed by printing in a desired pattern so that the thicknesses thereof are almost the same, it is possible to further enhance the safety against forgery and tampering, and to improve the design effect. It is also possible to provide a hologram that is extremely excellent, has no problem such as bubbles during stamping, and has an extremely beautiful finish.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of a hologram transfer foil according to the present invention, and FIG. 2 is a plan view showing a state after transfer in the embodiment. 1 ... Substrate, 2 ... Release layer, 3 ... Protective layer, 4 ... Hologram forming layer, 5 ... Hologram image, 6 ... Metal reflective layer, 7 ... Adhesive layer, 4A ... A pattern, 4B ... B pattern.

Claims (1)

[Scope of utility model registration request] 1. A hologram having a release layer formed on a substrate, a protective layer formed on the release layer if necessary, and a hologram image formed on the side opposite to the release layer by embossing. In a hologram including a forming layer and a metal reflection layer formed on the hologram forming layer, the hologram forming layer uses at least two kinds of resins having different colors as materials, and each of the resins is A hologram characterized by being formed by printing in a desired pattern so that the thicknesses are almost the same.