JP2002072887A - Forgery preventive label - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a forgery preventive label which may be relatively inexpensively manufactured, is hardly forged and enables a person to determine authenticity simply by viewing the label. SOLUTION: This label has embossed surfaces 3a and 3b for forgery prevention which have UV curing resin layers 3 and are formed by curing the resins with UV rays while pressing embossing dies to contact with the front surfaces of the UV curing resin layers 3 on at least one surface of a sheet 1 for the label.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a forgery prevention label provided with a forgery prevention function.

[0002]

2. Description of the Related Art Conventional anti-counterfeit labels include labels that have been subjected to various types of anti-counterfeiting processing. A label provided by attaching a hologram image sheet to a label substrate, or directly on a label substrate Labels with special fine embossing for preventing forgery, or labels that are provided by printing and applying a special ink such as a photochromic ink that emits fluorescent light by irradiating light of a special wavelength on the label base material, or as a label base material There is a label using a base material that has been subjected to special processing such as a watermark that is difficult to forge.

[0003]

The anti-counterfeit label provided with the hologram image as described above requires a high manufacturing cost.
Labels tend to be relatively expensive. Further, when a concavo-convex emboss for directly preventing forgery is directly applied to a label base material, there is a problem that the concavo-convex emboss occurs on the back surface of the label, and the range of use as a label is easily limited.

[0004] Further, in a forgery prevention label using a photochromic ink, it is difficult to immediately judge the authenticity of the label only by looking at the label, and the label must be irradiated with light of a special wavelength. I do not know the truth of the. Therefore, it takes time to prepare an illumination light source of a special wavelength, and a predetermined time is required until a true / false judgment is made.

An object of the present invention is to provide an anti-counterfeiting label which can be manufactured relatively inexpensively and is hard to forge, so that authenticity can be determined only by looking at the label.

[0006]

The invention according to claim 1 of the present invention comprises an ultraviolet-curable resin layer 3 on at least one side of a label sheet 1, and the surface of the ultraviolet-curable resin layer 3 is A forgery prevention label characterized by being a forgery prevention embossed surface formed by ultraviolet curing while pressing an embossing mold on the surface.

Next, a second aspect of the present invention is to provide a label sheet 1 having a label printing layer 2 and an ultraviolet curable resin layer 3 on at least one side thereof.
Is a forgery prevention embossed surface formed by UV curing while pressing an embossing die against the surface.

Next, according to a third aspect of the present invention, in the anti-counterfeit label according to the second aspect, the ultraviolet curable resin layer 3 is a transparent resin layer, and It is an anti-counterfeit label laminated on the surface.

Next, the invention according to a fourth aspect of the present invention is the anti-counterfeit label according to the second aspect of the present invention, wherein the label printing layer 2 is laminated on the surface of the ultraviolet curable resin layer 3. It is a label.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the anti-counterfeit label of the present invention will be described in detail below. FIG. 1 (a) is a side sectional view showing an example of the anti-counterfeit label of the present invention. A transparent or translucent UV-curable resin layer 3 is provided on at least one surface of a label sheet 1 made of a synthetic resin film or an aluminum foil in a partial pattern or entirely. Are provided with embossed surfaces 3a, 3b for preventing forgery of irregularities.

On the base sheet 1 of the anti-counterfeit label shown in FIG. 1 (a), the label printing layer 2 has a label printing character, a picture, It is provided as coloring or the like.

For example, the label sheet 1 is shown in FIG.
As shown in the figure, a label base sheet 1a, an adhesive layer 1b (pressure-sensitive adhesive layer, heat-sensitive adhesive layer) on its back surface, and a release sheet 1c (silicone on the coating inner surface side) for coating the adhesive layer 1b The forgery prevention label formed by the label sheet 1 is used by peeling the release sheet 1c and attaching the adhesive layer 1b surface to the article.

FIG. 1B is a side sectional view showing another example of the forgery prevention label of the present invention, wherein at least one surface of a label sheet 1 made of paper, synthetic resin film, or aluminum foil is partially provided. Or, on the entire surface, the label printing layer 2 is provided as a character for label display, a pattern, a color, or the like, and on the label printing layer 2, in a completely overlapping state or in a partially overlapping state, A transparent or translucent UV-curable resin layer 3 is provided over the entire surface or in a pattern, and the surface of the resin layer 3 is provided with embossed surfaces 3a and 3b for preventing forgery of irregularities.

The anti-counterfeit embossing surfaces 3a and 3b provided on the surface of the ultraviolet-curable resin layer 3 of the anti-counterfeit label of the present invention have a complicated pattern pattern or fine pattern having a fine planar view pattern. It is a pattern, and the embossed surfaces 3a and 3b are observed with different shades depending on the viewing angle, and it is difficult to forge and counterfeit by using an embossed type used for hologram embossing.

Next, an example of a method for manufacturing a forgery prevention label of the present invention will be described with reference to FIGS.

First, as shown in FIG. 2A, a label printing layer 2 for a pattern, a character, etc. is formed on one side of a label substrate sheet 1 by a printing plate system such as an offset printing plate or a gravure printing plate.
Is printed as necessary, and thereafter, from above the print layer 2,
Flexographic printing plates, gravure printing plates, intaglio printing plates, screen printing plates, etc. The curable resin layer 3 is printed and applied.

Next, as shown in FIG. 2 (b), a convex portion 4a and a concave portion 4b are formed on the ultraviolet curable resin layer 3 formed on the label sheet 1 by using a transparent synthetic resin plate or a glass plate.
The transparent embossing die 4 having the irregularities formed with the above is positioned and arranged. In this case, at least the embossing surface of the embossing die 4 that is in contact with the ultraviolet-curing resin layer 3 needs to have releasability from the ultraviolet-curing resin layer 3.

The releasability between the ultraviolet-curable resin material used for the ultraviolet-curable resin layer 3 and the transparent synthetic resin or glass material used for the embossing mold 4 is assured.
It is possible by appropriately selecting and using materials having no affinity between the materials.

For example, when a resin mainly composed of a thermoplastic resin is selectively used as the resin material of the ultraviolet-curable resin layer 3, a thermosetting resin can be used as the transparent resin material used for the embossing type.

When a resin mainly composed of a thermoplastic resin is selectively used as the resin material of the ultraviolet-curable resin layer 3, a resin mainly composed of a thermoplastic resin having a low affinity for the resin is used. For example, when an acrylic resin is selected and used as the resin material of the ultraviolet-curable resin layer 3, it is possible to use a polyethylene terephthalate resin or a polyolefin resin (polyethylene, polypropylene) for the other mold release. It is suitable as a condition for ensuring the properties. When glass is used for the embossing mold 4, it is appropriate to use a thermoplastic resin as a material for the ultraviolet-curable resin layer 3.

UV-curable resin layer 3 that meets the condition of release property
An example of a combination of and the embossing die 4 (at least the embossing die surface) is shown below. UV curable resin composition used for UV curable resin layer 3; Prepolymer; Urethane resin (or polyester resin, epoxy resin) Monomer; Acrylic acid ester Additive; Photopolymerization initiator Photopolymerization inhibitor UV curable resin layer 3 Examples of UV-curable resins used for coating: Best Cure No. 5L Carton Medium GW; T Co., Ltd.
& K TOKA Best Cure 161 Medium S; T & K TO
KA UVFIL000 medium; Teikoku Ink Mfg. Co., Ltd. TU299FDRS medium; Toyo Ink Mfg. Co., Ltd. Embossed mold; polyethylene terephthalate resin (or polyvinyl chloride resin)

Subsequently, as shown in FIG. 2 (c), the transparent embossing die 4 is pressed against the surface of the ultraviolet curable resin layer 3 formed on the label sheet 1 while passing through the embossing die 4. The resin layer 3 is cured by irradiating the curable resin layer 3 with ultraviolet rays (UV light) for a predetermined time.

Subsequently, the embossing mold 4 is peeled off from the surface of the ultraviolet-curable resin layer 3 and the label base sheet 1 and the adhesive layer 1b are cut to a predetermined label size on the cutting line C while leaving the release sheet 1c. As shown in FIG. 2 (d), cutting on the label sheet 1
An anti-counterfeit embossed surface 3a on the surface of the ultraviolet curable resin layer 3;
Obtain a forgery prevention label on which 3b has been applied.

As shown in FIG. 2D, when an ultraviolet-curable resin layer 3 is provided on the label sheet 1 of the anti-counterfeit label via a label printing layer 2, the ultraviolet-curable resin The layer 3 is made of a transparent or colored transparent UV-curable resin, and when the label printing layer 2 and the UV-curable resin layer 3 are separately provided on the label sheet 1 of the anti-counterfeiting label, For the curable resin layer 3, a transparent or colored transparent or opaque (colored and opaque) ultraviolet curable resin can be used.

Next, a specific embodiment of the method for producing a forgery prevention label of the present invention will be described with reference to FIG. A long (web-shaped or roll-up) label sheet 1 is pressed against
It is introduced between the gravure printing plate cylinder 11 and the impression cylinder 12 of the first printing unit (first color) while being unwound and transported by the pair of infeed rolls 40, and one side of the label sheet 1 is coated with an ultraviolet curable type. While repeatedly printing the first color label printing layer 2 using the printing ink, the ultraviolet irradiation means 13 is used.
Irradiates the label printing layer 2 with ultraviolet rays to cure and dry.

Subsequently, the label sheet 1 is introduced between the gravure printing plate cylinder 14 (second color) of the second printing unit and the impression cylinder 15, and the second surface of the label sheet 1 is coated with an ultraviolet curable printing ink. While repeatedly printing the color-printed label print layer 2,
The label printing layer 2 is irradiated with ultraviolet light by ultraviolet irradiation means 16 to be cured and dried.

Subsequently, the resin is introduced between a coating roll 18 and a pressure roll 19 of a coating unit for coating an ultraviolet curable resin. The application roll 18 is, for example, a flexographic printing plate, a gravure printing plate, an intaglio printing plate, or the like.
Several μm as a coating film thickness, for example, 2 to 10 μm, or 10 to 20 μm, 20 to 30 μm, or 30 to 50 μm
m, printing to obtain a film thickness of about 50 μm to 150 μm
The coating method is appropriate.

The resin supply roll 17 is rotated while being immersed in the ultraviolet curable resin liquid 30 stored in the resin liquid tank while rotating while being in contact with the application roll 18. Supply.

The application roll 18 applies an ultraviolet curable resin to a region adjacent to the label printing layer 2 on one side of the label sheet 1 or an area overlapping the label printing layer 2 in a pattern corresponding to the printing plate. To form a UV-curable resin layer 3. The UV-curable resin layer 3 has a film thickness (several μm, for example, 2 to 10 μm) at which a good uneven embossment with a predetermined depth can be obtained on the surface later.
μm or 10 to 30 μm or more).

Subsequently, on one side of the label sheet 1 on which the ultraviolet-curable resin layer 3 is formed, a long (web-shaped or roll-shaped) ultraviolet-transparent shaping film 21 (transparent film) is unwound. The ultraviolet curable resin layer 3 on the inner surface of the overlap is irradiated with ultraviolet rays through the shaping film 21 and cured by ultraviolet irradiation means 22 in the middle of the conveyance, while being pressed and pushed by the guide rolls 23 and 24. Let it.

The embossed die (see embossed die 4 in FIG. 2 (b)) is formed on the inner side of the shaping film 21 in advance by forming convex and concave portions 4a and concave portions 4b. On the surface of the UV-curable resin layer 3 on the inner surface of the lap which is superposed and cured in a pressed state with the mold, an anti-counterfeit embossed surface is formed by the convex portion 3a and the concave portion 3b by the embossing die.

Subsequently, while the molding film 21 is wound up, the label sheet 1 is discharged by an outfeed roll 60, and the label film 1 is removed from the surface of the ultraviolet-curable resin layer 3 on the label sheet 1. 21 are peeled off to form an embossed projection 3a on the label sheet 1.
The UV-curable resin layer 3 on which the anti-counterfeit embossed surface is formed by the recesses 3b is repeatedly formed.

Finally, the label sheet 1 on which the anti-counterfeiting embossed surface is formed is introduced into the die-cutting unit 50,
The upper label substrate sheet 1a and the adhesive layer 1b are repeatedly cut to a predetermined label size while leaving the release sheet 1c at the lowermost layer of the label sheet 1, and a blank area 1d other than the label size area is cut. The label sheet 1 on which the UV curable resin layer 3 for preventing forgery is formed is peeled off from the label sheet 1 by the peeling roll 25 and wound up.
And then rolled up as a roll-shaped label 70 to obtain the forgery prevention label of the present invention (multi-layered label).

[0034]

The anti-counterfeit label of the present invention has an ultraviolet-curing resin layer provided with anti-counterfeit fine irregularities on its surface. There is an effect that a subtle shadow is expressed on the surface of the fine unevenness depending on the angle, and the shadow due to the difference in the uneven shape can appear as a picture or pattern on the uneven surface.

The fine anti-counterfeit shape of the anti-counterfeit label of the present invention is formed by pressing an embossing die against an ultraviolet-curable resin on a label sheet and curing the resin by irradiation with ultraviolet light. As a label provided with anti-counterfeiting that can be judged as authentic by just looking at the label, there is an effect that the production cost is relatively low and it can be provided at a low cost.

[Brief description of the drawings]

FIG. 1A is a side sectional view showing an example of a label for preventing forgery of the present invention, and FIG. 1B is a side sectional view showing another example.

FIGS. 2A to 2D are process diagrams for explaining an outline of a method for producing a label for preventing forgery of the present invention.

FIGS. 3A to 3D are process diagrams illustrating a specific example of a method for producing a label for preventing forgery of the present invention.

[Explanation of symbols]

1 ... Label sheet 1a ... Label base sheet 1b ...
Adhesive layer 1d Label blank portion 1c Release sheet 2 Label printing layer 3 UV curable resin layer 3a Protrusion 3b Recess 4
... Emboss type 4a ... Convex part 4b ... Concave part 11,14 ... Printing plate cylinder 12,15 ... Impression cylinder 13,1
6, 22 ... UV irradiation means 18 ... Application cylinder 21 ... Transparent forming film 24 ... Release roll 25 ... Release roll 30 ... UV curable resin liquid 40 ... Infeed roll 50 ... Die release unit 60 ... Out feed roll 70 ... Roll Label

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification code FI Theme coat ゛ (Reference) G09F 3/03 G09F 3/03 Z

Claims (4)

[Claims] 1. A label sheet 1 provided with an ultraviolet-curable resin layer 3 on at least one surface thereof, wherein the surface of the ultraviolet-curable resin layer 3 is formed by ultraviolet curing while pressing an embossing mold against the surface. An anti-counterfeit label characterized by an anti-embossing surface. 2. A label sheet 1 having a label printing layer 2 and an ultraviolet-curable resin layer 3 on at least one side thereof, wherein the surface of the ultraviolet-curable resin layer 3 is pressed against an embossing mold while pressing the surface with an ultraviolet light. An anti-counterfeit label characterized by being an anti-counterfeit embossed surface formed by curing. 3. The anti-counterfeit label according to claim 2, wherein said ultraviolet curable resin layer is a transparent resin layer and is laminated on the surface of said label printing layer. 4. The forgery prevention label according to claim 2, wherein a label printing layer is laminated on a surface of said ultraviolet curable resin layer.