JP6013131B2 - Printed matter with concealing layer and method for producing - Google Patents

Description

  The present invention relates to a printed matter with a concealing layer and a method for producing the same.

  Conventionally, printed materials with a concealing layer generally referred to as scratch printed materials have been widely used in instant lottery tickets and game cards (see Patent Document 1).

  The scratch printed matter shown in Patent Document 1 includes an ink layer that displays concealment information that represents hitting or the like by characters by offset printing on paper, a release varnish layer that is provided so as to cover the ink layer, and the release varnish layer And a concealing layer containing a concealing pigment provided on the surface, and the concealing information is exposed by peeling the concealing layer with coins, nails or adhesive tape.

JP 05-246188 A

  When this type of scratch printed material is bound to a book or magazine and applied as an appendix, the cover layer can be easily peeled off when the magazine is placed in a bookstore, so that it is not possible to scratch with a nail or coin. There is a request from publishers who want to make it impossible to peel.

  In addition, peeling due to rubbing with a nail or a coin has a problem that scraps are generated and the surroundings are contaminated.

  Therefore, the present invention has been made in view of the above problems, and an example of the object thereof is to provide a printed matter with a concealing layer and the like that improve the peelability of the concealing layer.

In order to solve the above problem, the printed matter (1) with a concealment layer according to claim 1 is provided with a concealment information layer (4) on which concealment information (X) indicating information to be concealed is printed on the base (2). The upper layer of the concealed information layer is provided with a release layer (5) printed with an oxidation polymerization type OP varnish that does not contain a release component and has a release effect. A printed matter with a concealing layer provided with a concealing layer (6) for concealing the concealing information by printing ink, wherein the ultraviolet curable colored ink contains 30% or more of urethane acrylate in the total amount of the ink composition, And it contains the photoinitiator in 10 to 15% of range, The wetting index of the said peeling layer is 36 dyne / cm or less, It is characterized by the above-mentioned.

The printed matter with a concealing layer according to claim 2 is provided with a release layer in which OP varnish is printed on a base, and an ultraviolet curable type in which concealment information indicating information to be concealed is printed on the upper layer of the release layer. A concealment information layer (8a) is formed by printing the colored ink, and a concealment layer (8b, 8c) for concealing the concealment information is provided on the concealment information layer by printing ultraviolet curable color ink. The UV-cured colored ink (8a), which is a printed matter with a concealing layer and prints out the concealment information by white, contains 30% or more of urethane acrylate in the total amount of the ink composition, and contains a photopolymerization initiator. It is contained in the range of 10 to 15%, and the wetting index of the release layer is 36 dyne / cm or less .

Moreover, the printed matter with a concealing layer according to claim 3 is the printed matter with a concealing layer according to claim 1 or 2 , wherein the concealing layer (8b) contains a vegetable oil-derived component as an ink composition in an amount of 5 to 5 in the ink. It is contained in the range of 15%.

According to a fourth aspect of the present invention, there is provided a method for producing a printed matter with a concealing layer, printing a release layer using OP varnish on an upper layer of the concealment information (concealment information layer) of the base on which the concealment information is printed by offset printing. A masking layer made of ultraviolet curable colored ink is printed on the upper layer of the layer, and the colored ink is dried and cured by irradiating with ultraviolet rays, and the ultraviolet curable colored ink is formed of the ink composition. 30% or more of urethane acrylate is contained in the total amount, and a photopolymerization initiator is contained in the range of 10 to 15%, and the wetting index of the release layer is 36 dyne / cm or less .

  According to the printed matter with a concealing layer in the present invention, the concealing layer can be satisfactorily peeled off with an adhesive tape without peeling off with a nail or coin.

It is a schematic diagram which shows the structure of the printed matter with a concealment layer. It is a schematic diagram which shows the layer structure of printed matter with a concealment layer. It is the schematic which shows the usage condition of printed matter with a concealment layer. It is a schematic diagram which shows the structural example of the printed matter with a concealment layer of other embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  As shown in FIGS. 1 and 2, the printed matter 1 with the concealment layer of the present embodiment has information (hereinafter referred to as “concealment information X”) that should be concealed such as characters and patterns on the original fabric 2 as a base. The concealment information layer 4 to be displayed, the release layer 5 disposed on the surface where the concealment information X is displayed on the upper part of the concealment information layer 4, and the concealment pigment provided on the upper part of the release layer 5 And a concealing layer 6 containing

  For example, coated paper or the like is used for the original fabric 2, and the concealment information layer 4 is, for example, letters or numbers indicating the winning or grade of the lottery as the concealment information X by offset printing, or a pattern corresponding to them. Information is printed.

  The release layer 5 is printed by offset printing and is called an oxidation polymerization type OP (Over Print) varnish that does not contain a release component and has a release effect, and is usually used mainly for the purpose of surface protection. In particular, the wetting index is set to 36 dyne / cm or less, and a preferable range is set to 34 to 36 dyne / cm.

  As described above, the printed matter 1 with the concealing layer of the present embodiment does not cause the peeling by the peeling action of the peeling component such as wax or silicone by using the peeling varnish as in the past, but the wetting index of the peeling layer 5. Or the adhesion is reduced by selecting an ink having poor compatibility between the concealing layer 6 and the resin as the release layer 5 to cause peeling.

  The concealing layer 6 is for printing a predetermined color (silver, black, etc.) using colored ink by offset printing, concealing the concealment information X in the lower layer, using ultraviolet curable ink, after printing, The ink is dried and cured by irradiating with ultraviolet rays.

  As this ink, silver ink is preferably used. Moreover, the said silver ink contains 30% or more of urethane acrylates in the total amount of an ink composition, and contains 10-15% of photoinitiators.

  The concealing layer 6 may be a single layer, but in order to obtain a concealing effect, a plurality of layers are preferable.

  When the concealing layer 6 has a plurality of layers, it is preferable to have a sandwich structure in which silver ink is disposed in the lowermost layer and the uppermost layer and the intermediate layer is sandwiched between them. The intermediate layer is a soybean oil that is an ink composition. It is preferable to use an ultraviolet curable ink containing a component derived from vegetable oil such as linseed oil and linseed oil in a total amount of 5 to 15% in the total amount of the ink composition. The ink used for the intermediate layer is preferably black ink, but may be other color ink. Further, when the intermediate layer is in direct contact with the release layer (OP varnish), peeling does not occur. Therefore, the printing area of the intermediate layer is set to be smaller than the printing areas of the upper and lower layers. In addition, although it is also possible to use the ink whose vegetable oil origin component is less than 5% in the total amount of an ink composition for an intermediate | middle layer, we are anxious about peelability falling somewhat.

  As shown in FIG. 3, in the printed matter 1 with the concealing layer configured as described above, when the concealing part is peeled off with the adhesive tape 10, the concealing part 6 a that comes into contact with the adhesive tape 10 is peeled off. Visible.

  In addition, the masking layer 6 forms a strong film using an ultraviolet curable ink, and the release layer 5 does not contain a release component, so that it can be reliably peeled off with an adhesive tape, It is possible to prevent peeling by simply scratching with a nail or a coin.

  The printed matter 1 with the concealment layer is formed on the upper part of the concealment information X (the concealment information layer 4) of the base (original fabric 2) on which the concealment information X is printed by offset printing as described above, that is, the concealment information X The release layer 5 made of OP varnish is printed on the surface on which the mark is displayed, the concealing layer 6 made of UV-curable color ink is printed on the release layer 5, and the colored ink is dried by irradiating ultraviolet rays. Manufactured by curing.

  According to such a manufacturing method of the printed matter 1 with the concealment layer, the concealment information layer 4, the release layer 5, and the concealment layer 6 are printed by the same offset printing method. Compared with printing by different printing methods such as gravure printing and screen printing, productivity can be improved and manufacturing cost can be reduced.

  Next, another embodiment of the printed matter with a concealing layer will be described with reference to FIG. While the above embodiment prints the concealment information X on the original fabric 2 as the base, the printed material with the concealment layer of the present embodiment does not print the concealment information X on the original fabric 2, and a plurality of colored inks. The concealment information X is reversely printed on the lowermost layer of the layer, and the concealment layer is formed on the upper layer.

  The printed matter 1 </ b> A with the concealing layer of the present embodiment is provided on the exfoliating layer 5 composed of OP varnish on the raw fabric 2 and the exfoliating layer 5, for example, when the concealed part is a monochromatic name or a figure. And a colored ink layer 8.

  The colored ink layer 8 is composed of, for example, three layers of a lower ink layer 8a, an intermediate ink layer 8b, and an upper ink layer 8c. The lower ink layer 8a is printed with silver ink, and the concealment information X is whitened. The intermediate ink layer 8b functions as a concealment layer and is printed with black ink. The upper ink layer 8c is formed with silver ink. Is printed.

  In this case, when the concealing part is peeled off with the adhesive tape, the lower ink layer 8a in contact with the OP varnish which is the release layer 5 is peeled off, and the part where the OP varnish and the intermediate ink layer 8b are in contact is peeled off. Since it does not occur, the concealment information X is formed by the concealment layer.

  As described above, the printed matter 1 with the concealing layer of the present embodiment contains 30% or more of urethane acrylate in the total amount of the ink composition in the concealing portion and silver ink containing 10 to 15% of the photopolymerization initiator. By using, you can prevent it from being scraped with coins and nails.

  Moreover, the OP varnish which does not contain a peeling component is used for the peeling layer 5, and peeling is caused by making the wetting index of the peeling layer 5 less than 36 dyne / cm.

  In addition, this invention is not limited to the said embodiment, A various change is possible within the range of the summary of this invention.

1 Printed matter with concealment layer X Concealment information 2 Original fabric 4 Concealment information layer 5 Peeling layer 6 Concealment layer

Claims (4)

A concealment information layer on which concealment information indicating information to be concealed is printed is provided on the base, and a release layer on which OP varnish is printed is provided on the concealment information layer. A printed matter with a concealing layer provided with a concealing layer for printing colored ink and concealing the concealment information,
The ultraviolet curable colored ink contains 30% or more of urethane acrylate in the total amount of the ink composition, and contains a photopolymerization initiator in the range of 10 to 15%,
The printed matter with a concealing layer , wherein the release layer has a wetting index of 36 dyne / cm or less . A base layer is provided with a release layer printed with OP varnish, and an upper layer of the release layer is provided with a concealment information layer formed by printing a UV-curable color ink in which concealment information indicating information to be concealed is printed white. The upper layer of the concealment information layer is a printed matter with a concealment layer provided with a concealment layer for concealing the concealment information by printing an ultraviolet curable color ink.
The ultraviolet curable color ink that prints out the concealment information in white, contains 30% or more of urethane acrylate in the total amount of the ink composition, and contains a photopolymerization initiator in the range of 10 to 15%,
The printed matter with a concealing layer , wherein the release layer has a wetting index of 36 dyne / cm or less . Concealing layer, the masking layer with the printed matter according to claim 1 or 2 vegetable oil-derived component is an ink composition characterized by containing in the range of 5-15% in the ink. By offset printing, print the release layer with OP varnish on the upper layer of the hidden information (hidden information layer) on the base on which the hidden information is printed, and print the hidden layer with UV-curable colored ink on the upper layer of this release layer, The colored ink is dried and cured by irradiating with ultraviolet rays, and the ultraviolet curable colored ink contains 30% or more of urethane acrylate in the total amount of the ink composition, and is a photopolymerization initiator. In the range of 10 to 15%, and the wetting index of the release layer is 36 dyne / cm or less .