JPH07271281A - Brittle hologram transfer foil - Google Patents

Abstract

PURPOSE:To provide a transfer foil to form such a brittle hologram that can be hardly recognized from the outside, and that will be partly broken if the hologram is peeled. CONSTITUTION:This transfer foil consists of a supporting body 2, transfer peeling layer 3 to cover the whole surface of the supporting body 2, hologram forming layer 4 having a hologram pattern, reflective thin film layer 5, brittle peeling layer 6 which covers at least a part of the reflective thin film layer, and adhesive layer 7 successively formed. If the hologram after transferred is peeled, partial brittle fracture is caused in the hologram. Moreover, since the brittle peeling layer 6 is formed under the reflective thin film layer 5, recognition of the layer 6 is difficult from the outside, and thereby, preventing property against forgery and alternation can be improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a brittle hologram transfer foil, and more particularly to a brittle hologram transfer foil for forming a brittle hologram which is difficult to forge or falsify such as hologram replacement.

[0002]

2. Description of the Related Art In recent years, a hologram capable of reproducing a stereoscopic image by using light interference has been developed. For example, there is a relief-type hologram that forms irregularities on the surface, and this hologram has high distinguishability, requires advanced manufacturing technology, and is difficult to forge / alter, and can be formed into a transfer foil. It is used as a forgery prevention measure.
Then, the hologram transfer foil in which the hologram is produced in the form of a transfer foil is transferred to a part of securities such as a credit card or a bill to form a hologram, which is used. Further, it is difficult to peel off and reuse the hologram formed by these transfers from the viewpoint of being firmly adhered to the surface to be transferred or falsified and reattached.

On the other hand, as a method for forging a hologram, a method of newly making a manuscript or a model and a method of copying by contact copying, and a method of peeling and reproducing the uneven shape of the hologram as it is are used. It is said that Such a method of making a new manuscript or model and imitating it can be similar to the final one, and the method of copying by contact copy has poor duplication efficiency and poor resolution. After all, only similar things can be done.

However, the hologram forgery method that reproduces the hologram as close as possible to the original one is a method in which the concavo-convex shape of the latter original hologram is reproduced as it is. It is said that a hologram formed by transfer such as a card is illegally peeled off from the surface of the card, and based on this, copying is performed.

[0005]

However, the hologram transferred to a card or the like by this duplication method has a peeling layer, a hologram forming layer, a reflective thin film layer, and an adhesive layer that facilitate peeling from the support. Since the holograms are laminated, the hologram may be intentionally peeled off from the surface to be transferred, and it cannot be said that there is a positive preventive measure against this illegal peeling.

Therefore, according to the present invention, after the hologram is formed by transfer, a layer for providing a partial brittle peeling effect is provided below the reflective thin film layer, so that it is very difficult to recognize its presence even from the outside. Also, by providing a transfer foil that forms a brittle hologram in which the hologram is partially destroyed when it is peeled off, and by providing a print layer that is destroyed together with the hologram layer during peeling in its configuration, a very anti-counterfeiting effect is obtained. An object of the present invention is to provide a brittle hologram transfer foil having a high height.

[0007]

The present invention has been made to solve the above problems, and the invention described in claim 1 is
A transfer peeling layer covering the entire surface, a hologram forming layer having a hologram pattern, a reflective thin film layer, a brittle peeling layer covering at least a part of the reflective thin film layer, and an adhesive layer are sequentially provided on the support. It is a brittle hologram transfer foil.

According to a second aspect of the present invention, a transfer peeling layer covering the entire surface of the support, a hologram forming layer having a hologram pattern, a printing layer, a reflective thin film layer, and at least a part of the reflective thin film layer are covered. The brittle hologram transfer foil is characterized in that a brittle peeling layer and an adhesive layer are sequentially provided.

According to a third aspect of the present invention, a transfer peeling layer covering the entire surface of the support, a printing layer, a hologram forming layer having a hologram pattern, a reflective thin film layer, and at least a part of the reflective thin film layer are covered. The brittle hologram transfer foil is characterized in that a brittle peeling layer and an adhesive layer are sequentially provided.

The invention according to claim 4 is the invention according to claim 1,
In the brittle hologram transfer foil described in 3, the reflective thin film layer is formed of a transparent thin film layer having a refractive index different from that of the hologram forming layer.

According to a fifth aspect of the present invention, a transfer peeling layer covering the entire surface of a support, a hologram forming layer having a hologram pattern, a transparent thin film layer having a refractive index different from that of the hologram forming layer, a printing layer, The brittle hologram transfer foil is characterized in that a brittle peeling layer and an adhesive layer that cover at least a part of the transparent thin film layer are sequentially provided.

[0012]

According to the present invention, by forming the brittle peeling layer on at least a part of the reflective thin film layer, a partial brittle fracture occurs in the hologram due to the deliberate peeling after the hologram transfer, and from the outside. Its existence is difficult to recognize,
It is possible to improve the forgery prevention property and the tampering prevention property.

Further, in the inventions corresponding to claims 2 and 3, the printing layer has an effect of enhancing the decorative property, and is partially destroyed similarly to the hologram against intentional peeling, so that the anti-counterfeiting property and the tampering prevention property are improved. It is possible to improve the sex.

In the invention according to claim 4, the reflective thin film layer is a transmissive thin film layer having a refractive index different from that of the hologram forming layer, so that the design, pattern, characters, etc. of the base of the transferred material are Images and colors can be viewed through the hologram, and the decorativeness of the transferred material can be improved, and the anti-counterfeit property and the tamper-proof property are high.

Further, in the invention corresponding to claim 4,
By designing the reflective thin film layer as a transmissive thin film layer having a refractive index different from that of the hologram forming layer, the design, pattern, images such as characters and images of the transfer target can be visually observed through the hologram, The decorativeness of the transfer body can be improved, and by providing a printing layer as the lower layer, it has the effect of enhancing the decorativeness. At the same time, it is partially destroyed in the same way as the hologram due to deliberate peeling, and more counterfeit prevention is possible. It is possible to improve sexuality and tamper resistance.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a sectional view showing the structure of a brittle hologram transfer foil 1 according to the first invention of the present invention.

This brittle hologram transfer foil 1 comprises a support 2
A transfer peeling layer 3 that covers the entire surface is formed on top, and a hologram forming layer 4 is formed. Further, the hologram forming layer 4
Has a hologram forming surface on the side opposite to the transfer peeling layer 3, and the reflective thin film layer 5 is formed on the hologram forming surface by vapor deposition, sputtering or the like. The hologram forming surface can be formed by heating and pressing a nickel press plate having a fine concave-convex pattern forming a relief hologram onto the hologram forming layer 4. When the hologram forming layer 4 has a hologram pattern on its surface as described above, for example, a rainbow hologram or a grating hologram having a fine concavo-convex shape by a two-beam interference or a diffraction grating (grating) by an electron beam (EB) is applied. It is possible.

The reflective vapor deposition layer 5 is provided with a brittle peeling layer 6 formed so as to cover at least a part thereof. The adhesive layer 7 is formed thereon. Here, the base material 2 is, for example, a transparent polyethylene terephthalate film having a thickness of 25 μm. The base material 2 may be synthetic resin such as polyvinyl chloride, polyester, polycarbonate, polymethylmethacrylate, polystyrene, natural resin, paper, and the like.
A composite of synthetic paper or the like can be used alone or in combination.

The transfer peeling layer 3 is provided for peeling the hologram 20 from the substrate 2 from the transfer foil at the time of hologram transfer formation, and a composition having the following compounding ratio is used at a drying temperature by a gravure method. 110 ° C, thickness 1.5μ
It is formed by m. Acrylic resin 30 parts Toluene 40 parts Methyl ethyl ketone 40 parts Methyl isobutyl ketone 20 parts

The transfer peeling layer 3 may be made of thermoplastic acrylic resin, chlorinated rubber resin, vinyl chloride-vinyl acetate copolymer resin, cellulose resin, chlorinated polypropylene resin, silicone oil, fatty acid amide, or the like. The one to which zinc stearate is added can be used. Moreover, you may use an inorganic substance.

The hologram forming layer 4 has good embossing moldability, particularly in the case of a relief type hologram, uneven press is less likely to occur, a bright reproduced image is obtained, and adhesiveness with the transfer peeling layer 3 and the reflective thin film layer 5 is good. A resin that is
A composition having the following blending ratio was formed by a gravure method at a drying temperature of 110 ° C. and a thickness of 1.0 μm. Vinyl chloride-vinyl acetate copolymer: 25 parts Urethane resin: 10 parts Methyl ethyl ketone: 70 parts Toluene: 30 parts Further, the hologram forming surface has a plate surface temperature of the press plate with respect to the hologram forming layer 4 of such a composition. It is formed as 165 ° C.

As the hologram forming layer 4, other thermoplastic resins such as polycarbonate resin, polystyrene resin, polyvinyl chloride resin, unsaturated polyester resin, melamine resin, epoxy resin, urethane (meth) acrylate, polyester (meth) are also used. ) Thermosetting resins such as acrylates, epoxy (meth) acrylates, polyol (meth) acrylates, melamine (meth) acrylates, triazine (meth) acrylates or mixtures thereof, and further thermoformability having radically polymerizable unsaturated groups Materials and the like can be used, and materials other than those described above can also be used as long as they are stable materials capable of forming a hologram image.

The reflective thin film layer 5 is a layer that reflects an incident light ray, and is made of Al having a thickness of 100 nm formed by a vacuum deposition method. Incidentally, as the reflective thin film layer 5, silver,
Gold, tin, titanium nitride (TiNx) can be used.
In this case, it is very difficult to recognize that the brittle peeling layer 15 described below exists under the vapor deposition, and the forgery prevention property can be improved.

The brittle peeling layer 6 formed so as to cover at least a part of the reflective thin film layer 5 is a brittle peeling layer 6 and the reflective thin film layer 5 when the hologram is peeled after the hologram transfer.
Of the adhesive layer 7 or the brittle peeling layer 6 is peeled off.
It is provided for repelling, and is formed by an offset printing method, a silk screen printing method or the like in addition to the gravure printing method. The brittle peeling layer 6 is provided on a part of the reflective thin film layer 5 and may be provided so as to show a message such as characters and marks. The shape thereof is arbitrary, but the hologram is illegally peeled off. It is necessary to be able to clearly determine that.

As an example of the former, a composition having the following compounding ratio was prepared by a gravure method at a drying temperature of 110 ° C. and a thickness of 0.5.
It is formed in μm. Acrylic resin 30 parts Toluene 40 parts Methyl ethyl ketone 40 parts Methyl isobutyl ketone 20 parts

As an example of the latter, a coating of silicon resin or a coating of the above composition mixed with silicone oil is applied to have a thickness of 1.0 μm. In addition, in the examples in FIGS. 1 and 2 and the invention described below, the former state in which the interface between the brittle peeling layer 6 and the reflective thin film layer 5 is peeled off is shown. Describe.

Other examples of the adhesive layer 7 include polyester such as linear saturated polyester, vinyl chloride resin such as polyvinyl chloride and vinyl chloride-vinyl acetate copolymer resin, polyacrylic acid, polyacrylic acid- 2-methoxyethyl, polymethyl acrylate, poly (2-naphthyl acrylate), isobornyl polyacrylate, polymethacrylomethyl, polyacrylonitrile, polymethylchloroacrylate, polymethylmethacrylate, polyethylmethacrylate, polymethacrylic acid- Acrylic resins such as tert-butyl, polyisobutyl methacrylate, polyphenyl methacrylate, copolymer resins of methyl methacrylate and alkyl methacrylate (where the alkyl group has 2 to 6 carbon atoms), polystyrene, polydivinylbenzene, polyvinyl Benzene, styrene - butadiene copolymer resins, styrene - number of carbon atoms of the alkyl methacrylate (wherein the alkyl group is 2
Examples of the resin include vinyl resins such as copolymer resin of 6 to 6). For example, a composition having the following mixing ratio is formed by a gravure method at a drying temperature of 110 ° C. and a thickness of 1.0 μm. Polyester resin: 40 parts Vinyl chloride-vinyl acetate copolymer resin: 5 parts Methyl ethyl ketone: 40 parts Toluene: 40 parts

FIG. 2 shows the hologram 20 when the state (a) transferred onto the surface of the base material 15 of a plastic card made of vinyl chloride, acrylic, polycarbonate, ABS or the like and when forcibly peeled off by the adhesive tape 16 or the like. It is a diagram schematically showing a state (b) of being destroyed. According to this, the brittle peeling layer 6 is peeled off by the adhesive tape, and a part of the peeled hologram remains on the peeling surface, which makes the reproduction impossible.

FIG. 3 is a sectional view showing the structure of a brittle hologram transfer foil 10 according to the second invention of the present invention. In FIG. 4, the brittle hologram transfer foil 10 of the present invention is attached to the base material 15, and the hologram 21 is destroyed when the hologram 21 is transferred and formed (a) and when the hologram 21 is forcibly separated with an adhesive tape or the like. It is the thing which showed (b) typically. According to this, the brittle peeling layer 6 is peeled off by the adhesive tape, and a part of the peeled hologram remains on the peeling surface, which makes the reproduction impossible.

For the printing layer 8, for example, an ink composition having the following compounding ratio is used for gravure printing to obtain a drying temperature of 110.
It is formed at a temperature of 1.0.degree. Polyester resin: 25 parts Carbon black: 8 parts Methyl ethyl ketone: 70 parts Toluene: 30 parts

The print layer 8 is formed by printing a design such as characters and marks. As a printing method, in addition to gravure printing, there are methods such as offset and silk screen printing.

FIG. 5 is a sectional view showing the structure of a brittle hologram transfer foil 11 according to the third invention of the present invention. FIG. 6 shows a state in which the brittle hologram transfer foil 11 of the present invention is attached to the base material 15 and the hologram 22 is transferred and formed (a) and the hologram 22 is destroyed when it is forcibly peeled off with an adhesive tape or the like. It is the thing which showed (b) typically. According to this, the brittle peeling layer 6 is peeled off by the adhesive tape, and a part of the peeled hologram remains on the peeling surface, which makes the reproduction impossible.

The fourth invention is, in the brittle hologram transfer foils 1, 10 and 11 according to the first to third inventions, the reflective thin film is a transparent reflective thin film having a refractive index different from that of the hologram forming layer. The transparent thin film layer 9 having the above is provided. The transmissive thin film layer 9 exhibits light transmissivity and causes light reflection at the interface due to the difference in refractive index from the hologram forming layer, and is used for reproducing a hologram image on the hologram forming surface. For example, a thin film layer of ZnS having a thickness of 50 nm is formed by vapor deposition such as a vacuum vapor deposition method. According to this, the brittle fracture due to the peeling of the hologram and the reproduction of the hologram can be visually checked together with the image and color of the design, pattern, characters and the like of the base of the transferred material, and the decorativeness can be further improved. Furthermore, since the brittle peeling layer is below the hologram forming layer and the transparent thin film layer, it is not noticeable from the hologram surface and its existence is rarely known.

As the transparent thin film layer 9, it is preferable that the refractive index is higher than that of the hologram forming layer (refractive index n = 1.3 to 1.6) 13 for improving the decorative property. Inorganic materials shown in can be used.

[0035]

[Table 1]

As a method for forming such a transparent thin film layer, a film forming means such as a sputtering method or an ion plating method can be applied in addition to the vacuum vapor deposition method.
The film thickness is preferably in the range of 10 nm to 1000 nm.

FIG. 7 is a sectional view showing the structure of the brittle hologram transfer foil 12 according to the fifth aspect of the present invention. The brittle hologram transfer foil 12 has a transfer peeling layer 3 covering the entire surface of a support 2 and a hologram forming layer 4. Further, the hologram forming layer 4 has a hologram forming surface on the surface opposite to the transfer peeling layer 3, and the transparent thin film layer 9 is formed on the hologram forming surface. Transparent thin film layer 9
Is provided with a brittle peeling layer 6 and a printing layer 8 formed so as to cover at least a part thereof, and an adhesive layer 7 is formed thereon. According to this, the reproduced image of the hologram can be visually observed by the hologram forming surface and the image by the printing layer 8 can be visually observed, and further, the design of the base of the transfer target,
Images such as patterns and letters, colors, etc. can also be visually confirmed through the hologram. Further, the existence of the brittle peeling layer 6 can be hidden.

FIG. 8 shows a brittle hologram transfer foil 1 of the present invention.
2 schematically shows a state (a) in which 2 is attached to the base material 15 and the hologram 23 is transferred and formed, and a state (b) in which the hologram 23 is destroyed when the hologram 23 is forcibly peeled off by the adhesive tape 16 or the like. Is. According to this, the brittle peeling layer 6 is peeled off by the adhesive tape, and a part of the peeled hologram remains on the peeling surface, which makes the reproduction impossible.

[0039]

As described above, according to the present invention, after the hologram is transferred, the presence of the layer, which provides a partial brittleness effect even when viewed from the hologram surface, is provided below the reflective thin film layer. Can be made very difficult to recognize, and anti-counterfeiting property can be improved.

Further, by forming the reflective thin film layer as a transmissive thin film layer having a refractive index different from that of the hologram forming layer, the image and color such as the design, pattern, and characters of the base of the transferred material are not damaged. The decorativeness can be further improved.

Further, by providing the printing layer, the decorative property can be enhanced, and the peeling action is partially destroyed like the hologram, so that the anti-counterfeiting property and the tampering preventive property are further enhanced. Can be improved.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a configuration of a brittle hologram transfer foil according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a state before and after peeling of the brittle hologram transfer foil of FIG.

FIG. 3 is a cross-sectional view showing the structure of a brittle hologram transfer foil of the second invention of the present invention.

FIG. 4 is a cross-sectional view showing states before and after peeling of the brittle hologram transfer foil of FIG.

FIG. 5 is a sectional view showing a structure of a brittle hologram transfer foil of a third invention of the present invention.

FIG. 6 is a cross-sectional view showing a state before and after peeling of the brittle hologram transfer foil of FIG.

FIG. 7 is a cross-sectional view showing the structure of a brittle hologram transfer foil of the fifth invention of the present invention.

FIG. 8 is a cross-sectional view showing a state before and after peeling of the brittle hologram transfer foil of FIG.

[Explanation of symbols]

 1, 10, 11, 12 Brittle hologram transfer foil 2 Support 3 Transfer peeling layer 4 Hologram forming layer 5 Reflective thin film layer 6 Brittle peeling layer 7 Adhesive layer 8 Printing layer 9 Transparent thin film layer 15 Base material 16 Adhesive tape 20, 21, 22, 23 hologram

Front page continuation (72) Inventor Zhang Song brother 1-5-1 Taito, Taito-ku, Tokyo Toppan Printing Co., Ltd.

Claims (5)

[Claims] 1. A transfer peeling layer covering the entire surface, a hologram forming layer having a hologram pattern, a reflective thin film layer, a brittle peeling layer covering at least a part of the reflective thin film layer, and an adhesive layer are sequentially provided on a support. A brittle hologram transfer foil characterized in that 2. A transfer peeling layer covering the entire surface of a support, a hologram forming layer having a hologram pattern, a printing layer, a reflective thin film layer, a brittle peeling layer covering at least a part of the reflective thin film layer, and an adhesive layer. A brittle hologram transfer foil, which is provided in order. 3. A transfer peeling layer covering the entire surface, a printing layer, a hologram forming layer having a hologram pattern, a reflective thin film layer, a brittle peeling layer covering at least a part of the reflective thin film layer, and an adhesive layer on a support. A brittle hologram transfer foil, which is provided in order. 4. The brittle hologram transfer foil according to claim 1, wherein the reflective thin film layer is a transmissive thin film layer having a refractive index different from that of the hologram forming layer. 5. A transfer peeling layer covering the entire surface of a support, a hologram forming layer having a hologram pattern, a transparent thin film layer having a refractive index different from that of the hologram forming layer, a printing layer, and the transparent thin film layer. A brittle hologram transfer foil, which comprises a brittle peeling layer covering a part and an adhesive layer in that order.