JP2003260889A - Transfer type protective film ribbon, method for manufacturing it and printed matter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a protective film with which the truth against forgery and falsifying is easily judged. <P>SOLUTION: A supporting sheet is coated with a protective film transfer layer coating liquid by using a coating mechanism having a coating member provided by facing to a supporting roller through the supporting roller with an uneven pattern on the outer peripheral face and the supporting sheet hung on the supporting roller under a condition where a specified tension is provided to form a protective film transfer layer. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to printed matter such as cards and certificates, a transfer-type protective film ribbon for forming a protective film on these printed matter, and a method for manufacturing the transfer-type protective film ribbon. , A technique for forming a protective film having a predetermined concavo-convex pattern to prevent forgery and alteration.

[0002]

2. Description of the Related Art Printed materials such as ID cards, employee ID cards, and ID cards have a transparent protection on the surface in order to protect the printed face image and personal information from damage and counterfeiting. Have a membrane.

However, even if a protective film is provided, with the rapid development of copying technology in recent years, it is possible to read a person image or a personal information section recorded on an ID card, identification card, etc. with a color scanner or the like. It became easier. For this reason,
For example, tampering using methods such as outputting an image in which the person image portion is replaced and reattaching the sheet has been increasing.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and a first object of the present invention is to easily form a protective film which can be easily judged whether it is forgery or falsification. It is to obtain a method of manufacturing the transfer-type protective film ribbon.

A second object of the present invention is to obtain a transfer type protective film ribbon which can easily form a protective film whose authenticity can be easily judged against forgery and falsification.

Further, a third object of the present invention is to easily obtain a printed matter having a protective film whose authenticity can be easily judged against forgery and falsification.

[0007]

The transfer type protective film ribbon of the present invention comprises a support sheet and a protective film transfer layer formed on the support sheet and having an uneven pattern.

The printed material main body and the printed material of the present invention are transferred to the surface of the printed material main body by applying a transfer type protective film ribbon including a support sheet and a protective film transfer layer having an uneven pattern formed on the support sheet. And a protective film formed thereon.

The method of manufacturing a transfer type protective film ribbon of the present invention uses a coating mechanism having a supporting roller having an uneven pattern on the outer peripheral surface thereof, and a coating member provided facing the supporting roller via a supporting sheet. A protective film having a concave-convex pattern corresponding to the concave-convex pattern on the outer peripheral surface of the support roller, which is obtained by applying a protective film transfer layer coating liquid onto the support sheet hung on the supporting roller under a predetermined tension. It is characterized in that a transfer layer is formed.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION The transfer-type protective film ribbon of the present invention comprises:
It includes a support sheet and a protective film transfer layer formed on the support sheet, and the protective film transfer layer has an uneven pattern on its surface.

Further, the printed matter of the present invention comprises a printed matter main body,
And a protective layer transferred using the transfer-type protective film ribbon.

When the transfer type protective film ribbon of the present invention is used,
A protective layer having a concavo-convex pattern for preventing forgery and falsification can be easily obtained by simply transferring the protective transfer layer onto a substrate to form a protective film. The obtained protective layer is transparent to incident light in the vertical direction, but since the refractive index of the uneven pattern portion is different from the refractive index of the portion without the uneven pattern, it is uneven against oblique incident light. The pattern can be easily visually recognized. In the unlikely event that different protective layers are formed due to forgery or falsification, such a concavo-convex pattern cannot be visually recognized even when tilted.Therefore, the printed matter obtained using the transfer-type protective film ribbon of the present invention is Authenticity can be easily determined, and the effect of preventing forgery and falsification is high. Moreover, such a concavo-convex pattern can also be used as a decoration.

The method for producing a transfer-type protective film ribbon of the present invention is an example of a method for producing the transfer-type protective film ribbon according to the present invention, in which a predetermined tension is applied to a support roller having an uneven pattern on its outer peripheral surface. The method includes a step of applying a protective film transfer layer coating liquid to the applied support sheet in the applied state to form a protective film transfer layer having a surface of an uneven pattern.

In particular, in the method of the present invention, the support roller is provided so as to face the support roller via the support roller having an uneven pattern on the outer peripheral surface and the support sheet hung on the support roller with a predetermined tension applied. By using a coating mechanism having a coating member, the coating solution for the protective film transfer layer is applied onto the support sheet to form a protective film transfer layer having an uneven pattern surface corresponding to the uneven pattern of the outer peripheral surface of the support roller. can do.

As the coating mechanism, for example, a reverse coater, a blade coater, a squeeze coater or the like can be preferably used.

According to the method of the present invention, since the support sheet is hung in a state in which a predetermined tension is applied, the support sheet is similarly deformed into an uneven shape by receiving the uneven pattern of the outer peripheral surface. When the coating solution for the protective film transfer layer is applied on the supporting sheet in a deformed state, a difference in wettability occurs on the surface of the supporting sheet, resulting in a non-uniform thickness of the coating film, resulting in an uneven protective film transfer. A layer is obtained.

By using the method of the present invention, a protective film transfer layer having a concavo-convex pattern can be easily formed by simply using a supporting roller having concavities and convexities on the outer peripheral surface.
Further, since the workability is good, mass production is possible at low cost.

The height difference of the concavo-convex pattern of the protective layer transfer layer used in the present invention is preferably in the range of 0.5 to 10 μm. The higher the difference in height of the uneven pattern, the easier it is to visually recognize when transferred to the transfer medium, and the higher the effect of preventing forgery / alteration. On the other hand, the smaller the difference, the higher the effect of protecting the printed matter from damage. Considering the compatibility of these effects, the height difference of the concavo-convex pattern is more preferably 1 to 2 μm.

The printed matter body used in the present invention is as follows:
Examples include ID cards, employee ID cards, and ID cards.

Examples of card substrates used for ID cards include polyethylene terephthalate, polyester, polyamide, polyimide, polycarbonate, cellulose ester, polyethylene, polypropylene, polystyrene, polyacrylate, and vinyl chloride.

The card substrate preferably has its thickness in the range of 0.1 to 1 mm.

Further, the card base material may have a single-layer structure or a multi-layer structure in which a plurality of films are laminated.

Examples of the material of the supporting sheet used for the transfer type protective film ribbon of the present invention include polyethylene terephthalate, polyester, polyamide, polyimide, polycarbonate, cellulose ester, polyethylene, polypropylene, polystyrene, polyacrylate and the like. The support sheet preferably has a thickness in the range of 1 to 200 μm.

The UV-curable compound that can be used in the protective film forming layer of the present invention is preferably a (meth) acrylic acid ester of a trifunctional or higher functional alcohol such as pentaerythritol triacrylate, pentaerythritol trimethacrylate and pentaerythritol tetraacrylate. , Pentaerythritol tetramethacrylate, trimethylolpropane triacrylate, trimethylolpropane trimethacrylate, dipentaerythritol tetraacrylate, dipentaerythritol hexaacrylate, dipentaerythritol hexamethacrylate, dipentaerythritol pentamethacrylate, pentaerythritol polyacrylate, and dipenta Examples thereof include erythritol polyacrylate.

The tri- or higher functional UV-curable compounds may be used alone or in combination.

As a commercial product, Toagosei Chemical Industry Co., Ltd.
Aronix M-305, M-309, M- under the brand name of
310, M-315, M-320, M-325, M-3
30, M-400, NK Ester TMPT, A-TMPT, A-TMM-3, A- under the trade name of Shin Nakamura Chemical Co., Ltd.
TMM-3L, A-TMMT, A-9530 etc. are mentioned.

The UV-curable compound used in the present invention may be used in combination with a photoreaction initiator.
Examples of the photoreaction initiator include benzophenones and acetophenones.

The UV-curable compound of the present invention can be used in combination with a binder. The binder may be compatible or incompatible with the composition containing the ultraviolet curable compound. Generally, various resins capable of forming a film can be used as the binder.

Examples of such binders include polyamide resins, polyester resins, epoxy resins, polyurethane resins, polyacrylic resins, vinyl resins, polyvinyl alcohol resins and the like.

For example, a protective film transfer layer is formed by dissolving or dispersing a binder and an ultraviolet-curable compound in a solvent to prepare a coating solution for the protective film transfer layer, coating the solution on one side of a support, and drying. You can The dry film thickness of the protective film transfer layer is preferably 1 to 50 μm.

FIG. 1 is a schematic view showing an example of a reverse coater as a coating mechanism preferably used in the present invention.

As shown, this reverse coater 10
Is provided on the application roller 2 for carrying the protective film transfer layer coating liquid 5, and is reversely rotated with respect to the rotation direction of the application roller 2 to change the carried amount of the protective film transfer layer coating liquid 5. A metering roll 3 for regulating, and a backup roller that is further provided on the application roller 2 and that rotates in the opposite direction to the rotation direction of the application roller 2 via a support sheet 6 that is hung under a predetermined tension. 1
Have and.

FIG. 2 is a diagram for explaining the backup roller 1 used in FIG. As shown, the backup roller 1 has, for example, dot-shaped recesses 7 on its outer peripheral surface.

FIG. 3 is a view for explaining how the protective coat transfer layer coating liquid is formed by the reverse coater 10 of FIG.

As shown in the figure, the support sheet 6 is hung on the backup roller 1 with a predetermined tension applied. At this time, minute recesses 11 also appear on the tensioned surface of the support sheet 6 along the dot pattern on the outer peripheral surface. The minute recesses 11 cause a difference in wettability on the surface of the support sheet 6. For this reason, when the protective roller transfer layer coating liquid 5 is applied onto such a supporting sheet 6 by the application roller 2 which rotates in the opposite direction to the backup roller 1, the concave portion 11 has poor wettability and the film thickness is reduced. Becomes thin. As a result, the protective film transfer layer coating film 9
A concave pattern 12 is formed at a position corresponding to the concave portion 11 on the surface. After that, the protective film transfer layer coating film 9 is dried to obtain a transfer type protective film ribbon. The concave pattern 12 on the surface of the coating film 9 obtained by the reverse coater 10 has a shape elongated in the roller rotation direction than the dot-shaped concave 7 on the outer peripheral surface of the backup roller 1.

FIG. 4 is a sectional view showing the structure of the obtained transfer type protective film ribbon. As shown in the figure, this transfer-type protective film ribbon 50 has a support sheet 51 and a protective film transfer layer 52 having a concavo-convex pattern formed on the surface thereof.

In FIGS. 5 and 6, the protective film formed by using the transfer type protective film ribbon shown in FIG.
An example of a D card is shown.

FIG. 5 shows the case of FIG. 6 when the incident light is applied vertically.
Shows the case where incident light is applied obliquely.

As shown in FIG. 5, when the incident light perpendicular to the surface of the ID card is applied, the pattern of the protective film cannot be visually recognized. However, as shown in FIG.
When the incident light strikes the card surface obliquely, the pattern of the protective film can be easily visually recognized.

The concavo-convex pattern is not particularly limited, and a desired pattern such as a monotone dot pattern or a character pattern can be used.

FIG. 7 is a schematic view showing a blade coater which is another example of the coating mechanism used in the present invention.

As shown, this blade coater 20
Are provided in a state where the support sheet 17 is applied with a predetermined tension applied thereto, and the backup roller 13 having an uneven surface on the outer peripheral surface and the backup roller 13 with the support sheet 17 interposed therebetween. The coating head 15 is provided with a blade 14 that contains the transfer layer coating liquid 16 and regulates the coating amount of the protective film transfer layer coating liquid 16 under a predetermined load.

In this blade coater 20, the coating liquid 16 for the protective film transfer layer is applied to the blade 1 from the coating head 15.
It is supplied onto the support sheet while being regulated in 4, and coating is performed. Similar to the backup roller 1 of FIG. 1, the backup roller 13 has an arbitrary uneven pattern formed on the outer peripheral surface thereof. Therefore, an uneven pattern is formed on the surface of the obtained protective film transfer layer.

FIG. 8 is a schematic view showing a squeeze coater which is still another example of the coating mechanism used in the present invention.

As shown, this squeeze coater 30
Has a conveying roller 31, a rubber coating roller 19 and a backup roller 18 which are arranged adjacent to each other.
The support sheet 2 is provided between the supply roller 19 and the support roller 18.
2 is interposed, and the support roller 18 is hung while a predetermined tension is applied. The transport roller 31 is immersed in the protective film transfer layer coating liquid 21 contained in the container, and transports the coating liquid 21 to the rubber coating roller 19 while rotating.
The coating liquid 21 transferred to the rubber coating roller 19 is coated on the support sheet 22 with its coating amount regulated by the edge doctor 23. Similar to the backup roller 1 of FIG. 1, the backup roller 18 has an arbitrary uneven pattern formed on its outer peripheral surface. Therefore, an uneven pattern is formed on the surface of the obtained protective film transfer layer.

[0046]

EXAMPLES The present invention will be described in detail below with reference to examples.

Example A polyethylene terephthalate film having a thickness of 25 μm was prepared as a supporting sheet.

Further, a coating solution for protective film transfer layer having the following composition was prepared.

Composition of coating liquid for protective layer transfer layer Polyacrylic binder resin (trade name DIANAL BR-87 manufactured by Mitsubishi Rayon Co., Ltd.) 100 parts by weight UV curable compound (pentaerythritol triacrylate) 60 parts by weight Photoreaction initiation Agent (Ciba Special Chemicals Co., Ltd., trade name Irgacure 651) ... 10 parts by weight This support sheet was applied to the same apparatus as in FIG. 1, and one side of the support sheet was coated with the coating solution having the above composition. Then, the obtained coating film was heated and dried in a drying oven at 140 ° C. for 1 minute to form an ultraviolet-curable protective film transfer layer having a film thickness of about 10.0 μm, and a transfer-type protective film ribbon was obtained.

Using the obtained transfer-type protective film ribbon, an ultraviolet-curable protective film was transferred onto an ID card by a thermal transfer system. Then, the ultraviolet curing protective film was irradiated with ultraviolet rays to form an ultraviolet curing protective film.

In the protective film of the ID card thus obtained, no concavo-convex pattern was visible with respect to incident light perpendicular to the surface. On the other hand, when the oblique incident light was applied, the uneven pattern could be easily visually recognized.

From this, it was found that the authenticity can be easily determined when the counterfeiting or falsification is performed.

[0053]

According to the present invention, it is possible to easily form a protective film on a printed matter, which is easy to determine whether it is forgery or falsification.

[Brief description of drawings]

FIG. 1 is a schematic view showing an example of a coating mechanism used in the present invention.

FIG. 2 is a diagram for explaining a backup roller used in FIG.

FIG. 3 is a diagram for explaining how to form a coating liquid for a protective film transfer layer.

FIG. 4 is a cross-sectional view showing a configuration of an example of a transfer type protective film ribbon of the present invention.

FIG. 5 is a front view showing an example of a printed matter of the present invention.

FIG. 6 is a front view showing an example of a printed matter of the present invention.

FIG. 7 is a schematic view showing another example of the coating mechanism used in the present invention.

FIG. 8 is a schematic view showing still another example of the coating mechanism used in the present invention.

[Explanation of symbols]

1, 18 ... Support roller, 2 ... Supply roller, 5, 16, 2
DESCRIPTION OF SYMBOLS 1 ... Protective film transfer layer coating liquid, 6, 17, 22 ... Support sheet, 7 ... Uneven pattern, 9 ... Protective film transfer layer coating film, 12
... uneven pattern

Claims (6)

[Claims] 1. A transfer-type protective film ribbon comprising: a supporting sheet; and a protective film transfer layer formed on the supporting sheet and having an uneven pattern. 2. The protective film transfer layer is obtained by applying a protective film transfer layer coating liquid on a support sheet hung on a support roller having an uneven pattern on the outer peripheral surface with a predetermined tension applied. The transfer type protective film ribbon according to claim 1, wherein an uneven pattern corresponding to the uneven pattern on the outer peripheral surface of the support roller is formed. 3. The transfer type protective film ribbon according to claim 1, wherein the protective film transfer layer has an uneven pattern having a height difference of 0.5 to 10.0 μm. 4. A protective film transferred to the surface of the printed matter main body by applying a transfer-type protective film ribbon including a printed matter main body, a supporting sheet, and a protective film transfer layer formed on the supporting sheet and having an uneven pattern. A printed matter comprising: 5. A concavo-convex pattern on the outer peripheral surface of the supporting roller, which is obtained by applying a protective film transfer layer coating liquid on a supporting sheet hung on a supporting roller having a concavo-convex pattern on the outer peripheral surface under a predetermined tension. A method of manufacturing a transfer-type protective film ribbon, which comprises forming a protective film transfer layer having an uneven pattern corresponding to the above. 6. The coating of the protective layer transfer layer coating liquid is performed by a coating mechanism having a coating member provided opposite to the support roller via the support roller and the support sheet hung on the support roller. The method for producing a transfer-type protective film ribbon according to claim 5, wherein the coating mechanism is selected from a reverse coater, a blade coater, and a squeeze coater.