JP2018192743A - Printed matter and container containing printed matter - Google Patents

Abstract

To provide a printed matter adding a metallic sheen and capable of providing metallic sheen feeling in wide reflection angles.SOLUTION: There is provided a printed matter 100 having a gloss printing layer 20 containing a metal scale on a substrate 10, having a projection and/or a recess at at least a part of location corresponding presence location of the gloss printing layer 20 in a plane direction of the printed matter 100 in a gloss printing 20 layer side, in which at least a part of the projection and/or the recess has a pair of inclined planes 31 and 32 which has inclination to a different side based on a perpendicular to a surface of the printed matter, of which inclination angles to the surface of the printed matter do not change continuously, and which satisfies conditions (a) and/or (b). (a) S/L is 0.40 or less, where with comparison of minimum length X of a linear line connecting start points of the pair of inclined planes 31 and 32 each other and minimum length Y of a linear line connecting end points of a pair of inclined angles d in any cross section traversing the projection and/or the recess, the longer one of X and Y is L and the shorter one is S. (b) A rough surface 40 exists on a surface of one inclined plane 32 of the pair of inclined planes 31 and 32.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a printed matter and a container using the printed matter.

  Conventionally, various printed materials may be required to have a metallic luster in order to improve their design properties.

  As one means for imparting metallic luster, a film having metallic luster is used. For example, a substrate having a metallic luster is produced by laminating a film having a metallic luster on a paper substrate, and a printed matter having a metallic luster is produced by printing a pattern or the like on the substrate.

However, a film having metallic luster is formed by forming a metal vapor-deposited film on the film, and thus requires a cost and is not suitable for an inexpensive printed matter. Furthermore, the substrate with a metallic gloss film laminated on a paper substrate is curled due to the difference in shrinkage between the paper and the film, and the subsequent process (for example, the printing process on the substrate, the printed product in the container). There is a problem that the accuracy of the processing step) is lowered and the yield is lowered.
In order to solve the above problem, Patent Document 1 is proposed.

JP 2003-2322 A

  Patent Document 1 discloses a paper container in which a printed layer having a metallic gloss layer region including a binder resin and a metal thin film strip is formed on a paper base material.

  The paper container of Patent Document 1 has no problem with respect to cost and curl. However, the paper container of patent document 1 is inferior to a metallic glossiness compared with a metal vapor deposition film | membrane, and was not able to improve the designability.

  An object of this invention is to provide the printed matter and container which can feel metallic luster strongly, without using the means of metal vapor deposition, and were excellent in the design property.

In order to solve the above problems, the present invention provides the following [1] to [2].
[1] A printed matter having a glossy printed layer on at least a part of a substrate, wherein the glossy printed layer includes metal scales, and the printed matter has a surface having the glossy printed layer on the basis of the substrate. And at least a portion of the portion corresponding to the location of the glossy printed layer in the planar direction of the printed matter has a convex portion and / or a concave portion, and at least a portion of the convex portion and / or the concave portion is a portion of the printed matter. A printed material that has a pair of inclined surfaces that are inclined to different sides with respect to a normal to the surface and that do not continuously change the inclination angle with respect to the surface of the printed material, and satisfy the following conditions (a) and / or (b).
(A) In an arbitrary cross section that traverses the convex part and / or the concave part, a length X of a straight line connecting the start points of the pair of slopes, and a length Y of a straight line connecting the end points of the pair of inclination angles Compare Of X and Y, S / L is 0.40 or less, where L is the longer one and S is the shorter one.
(B) A rough surface is provided on the surface of one of the pair of slopes.
[2] A container using the printed material according to [1].

  The printed matter and container of the present invention can feel a strong metallic luster without using metal vapor deposition means, and can improve the design.

It is a figure which shows one Embodiment of the printed matter of this invention, Comprising: It is sectional drawing to which the location which has a convex part was expanded. It is a figure which shows other embodiment of the printed matter of this invention, Comprising: It is sectional drawing to which the location which has a recessed part was expanded. It is a figure which shows other embodiment of the printed matter of this invention, Comprising: It is sectional drawing to which the location which has a convex part was expanded. It is a top view which shows other embodiment of the printed matter of this invention. It is a figure for demonstrating that the printed matter of this invention has a strong metallic luster. It is a figure for demonstrating the start point and end point of a slope. It is a top view which shows an example of a convex part.

[Printed matter]
The printed matter of the present invention is a printed matter having a glossy printed layer on at least a part of a substrate, the glossy printed layer including metal scales, and the printed matter has the glossy printed layer based on the substrate. A convex portion and / or a concave portion in at least a portion of the surface on the side corresponding to the location of the glossy printed layer in the planar direction of the printed matter, and at least a portion of the convex portion and / or the concave portion is In addition to having a pair of inclined surfaces that are inclined to different sides with respect to the perpendicular to the surface of the printed matter and whose inclination angle with respect to the surface of the printed matter does not continuously change, the following conditions (a) and / or (b) are satisfied It is.
(A) In an arbitrary cross section that traverses the convex part and / or the concave part, a length X of a straight line connecting the start points of the pair of slopes, and a length Y of a straight line connecting the end points of the pair of inclination angles Compare Of X and Y, S / L is 0.40 or less, where L is the longer one and S is the shorter one.
(B) A rough surface is provided on the surface of one of the pair of slopes.

1-3 is a figure which shows embodiment of the printed matter 100 of this invention, Comprising: It is sectional drawing to which the location which has a convex part or a recessed part was expanded. The printed matter 100 in FIGS. 1 to 3 has a glossy printed layer 20 on a substrate 10. 1 to 3 have a pair of inclined surfaces 31 and 32 that are inclined to different sides with respect to the normal to the surface of the printed matter 100 and that do not continuously change the inclination angle with respect to the surface of the printed matter. doing. The printed matter 100 in FIG. 3 has a rough surface 40 on the surface of one of the pair of inclined surfaces 32.
1 to 3, (i) means the start point of the slope, and (ii) means the end point of the slope. 1 and 3, H means the height of the convex portion, and in FIG. 2, D means the depth of the concave portion.

<Base material>
The material of the base material is not particularly limited as long as it is a material used in conventional printed materials, and is made of high-quality paper, medium-quality paper, coated paper, synthetic paper, impregnated paper, laminated paper, printing coated paper, and recording material. Paper such as coated paper, polyethylene terephthalate film, polyethylene film, polypropylene film, plastic film such as polycarbonate film, or a composite of these can be used.

If the film thickness of the substrate is too thin, the strength of the printed material may be inferior when the convex portions and / or the concave portions are formed. On the other hand, if the thickness of the substrate is too thick, the processability when forming the convex part and / or the concave part is likely to deteriorate.
Therefore, if the substrate is a paper substrate, it is preferable that the basis weight is 150~550g / ^{m 2,} and more preferably 200 to 400 g / ^{m 2.}
Moreover, when a base material is a plastic film base material, it is preferable that it is 8-100 micrometers, and it is more preferable that it is 10-50 micrometers.

<Glossy printing layer>
The gloss printing layer is formed on at least a part of the substrate and is formed by printing the gloss printing layer ink. By forming the gloss layer on the printed matter by printing instead of vapor deposition, the cost can be reduced and the occurrence of curling can be suppressed.

  The glossy printed layer may be formed only in a part of the region on the substrate, or may be formed in the entire region on the substrate. When a glossy printed layer is formed in a partial area on the base material, a pattern such as letters, numbers, figures, symbols, landscapes, people, animals, and characters may be formed by the glossy printed layer.

The glossy printed layer needs to contain metal scales. By using a metal scale, the metallic gloss of the glossy printed layer can be improved.
Further, the reflected light reflected by the metal vapor deposition film contains almost no diffused light, whereas the reflected light reflected by the metal scale contains a slight amount of diffused light. For this reason, the glossy printed layer containing metal scales is preferable in that the scratch can be made inconspicuous and the yield can be increased when a fine scratch is generated in the glossy printed layer as compared with the metal vapor-deposited film. .

  The metal scales are preferably unevenly distributed on the upper part of the glossy printed layer (on the side opposite to the base of the glossy printed layer). The metallic scale is unevenly distributed in the upper part of the glossy printed layer, thereby improving the metallic luster and improving the adhesion between the glossy printed layer and the lower layer of the glossy printed layer (base material or sealing layer described later). Can do.

  The metal scales can be unevenly distributed on the glossy printed layer in the process of forming the glossy printed layer. More specifically, when the solvent for the glossy printing layer ink volatilizes during the heat drying process of the glossy printing layer, the solvent flows upward. And it is thought that a metal scale floats with the flow of a solvent, and a metal scale is unevenly distributed in the upper part of a glossy printed layer. For this reason, when the solvent is easy to penetrate as the base material (for example, when the base material is a paper base material), it is preferable to form a sealing layer described later between the base material and the glossy printed layer. .

The degree of uneven distribution of the metal scales can be confirmed by imaging the cross section of the printed matter with an electron microscope and checking the density difference in the glossy printed layer of the photographed image. More specifically, the unevenly-distributed portion of the metal scale is observed white because the reflection of electrons is remarkable, and the portion substantially not containing the metal scale is observed in gray.
The ratio of the thickness of the unevenly distributed area of the metal scale in the glossy printed layer [(the thickness of the unevenly distributed area of the metal scale / total thickness of the glossy printed layer)] is 10 to 60% from the viewpoint of the balance between the metallic gloss and the adhesiveness. It is preferably 20 to 50%, more preferably 25 to 45%.

The metal scale preferably satisfies the following condition (1).
Average thickness of metal scale / average length of metal scale ≦ 0.010 (1)
By setting [the average thickness of the metal scale / the average length of the metal scale] to 0.010 or less, when the ink for the glossy printing layer is applied, the glossy printing layer in the horizontal direction (perpendicular to the thickness direction of the glossy printing layer) The metal scales are less likely to tilt with respect to the direction of For this reason, when the solvent flows above the glossy printing layer in the drying process of the glossy printed layer, the metal scales are easily subjected to the force of the solvent flow, and the metal scales are likely to be unevenly distributed on the top of the glossy printed layer, Since the metal scales are easily arranged in parallel, the metallic luster can be easily improved. In addition, the adverse effects caused by the inclination of the metal scale increase with the increase in the content of the metal scale, but when the above condition (1) is satisfied, the metal scale is difficult to tilt, so that the content of the metal scale is increased. It is easy to improve the metallic luster.
In addition, when the average thickness of a metal scale becomes thin too much with respect to the average length of a metal scale, handleability may become difficult and sufficient metal luster may not be expressed.
Therefore, the condition (1) preferably satisfies 0.001 ≦ average thickness of metal scale / average length of metal scale ≦ 0.010, and 0.002 ≦ average thickness of metal scale / average length of metal scale. It is more preferable to satisfy | fill thickness <= 0.008, and it is still more preferable to satisfy | fill 0.002 <= average thickness of a metal scale / average length of a metal scale <= 0.005.

In addition, at the time of applying the ink for the glossy printed layer, from the viewpoint of suppressing the metal scale from tilting with respect to the horizontal direction of the glossy printed layer, and suppressing the metal scale from protruding from the surface of the glossy printed layer. The average length of the metal scales and the thickness of the glossy printed layer preferably satisfy the following condition (2).
10 ≦ average length of metal scale / thickness of glossy printed layer (2)
In addition, when [average length of metal scale / thickness of glossy printed layer] is too large, metal scale may protrude from the surface of the glossy printed layer. Therefore, condition (2) is 12 ≦ average of metal scale. It is more preferable to satisfy the length / thickness of the glossy printed layer ≦ 60, and it is further preferable to satisfy 14 ≦ average length of the metal scale / thickness of the glossy printed layer ≦ 50.

Examples of the metal scale material include metals and alloys such as aluminum, gold, silver, brass, titanium, chromium, nickel, nickel chromium, and stainless steel.
The metal scale can be obtained, for example, by peeling a metal thin film formed by vacuum-depositing the metal or alloy on a plastic film from the plastic film, and crushing and stirring the peeled metal thin film.

The average length of the metal scale is preferably 5.0 to 30.0 μm, more preferably 8.0 to 20.0 μm, from the viewpoints of dispersion suitability, uneven distribution, and arrangement of the metal scale.
Further, the average thickness of the metal scale is preferably 0.10 μm or less, more preferably 0.08 μm or less, and further preferably 0.06 μm or less from the viewpoint of uneven distribution and arrangement of the metal scales. . Further, the average thickness of the metal scale is preferably 0.01 μm or more, and more preferably 0.02 μm or more, from the viewpoints of handleability and high gloss.

Let the average length and average thickness of a metal scale be an average value of 100 metal scales. In addition, the length and thickness of each metal scale can be measured by using a laser interference type three-dimensional shape analysis apparatus in a state where the metal scale is dispersed on a smooth substrate. The length of the individual metal scale means the maximum diameter when the individual metal scale is observed from a plane in an arbitrary direction, and the thickness of the individual metal scale is the thickness when the individual metal scale is observed from the cross-sectional direction. It means the maximum thickness. In addition, the maximum diameter when each metal scale is observed from a plane in an arbitrary direction is intended to unify the direction in which the maximum diameter of each metal scale is measured. For example, when the X-axis direction on the screen obtained by image processing of the measurement result of the three-dimensional shape analyzer is an arbitrary direction (measurement direction), the maximum diameter is measured in a direction parallel to the X-axis. Even if there is a maximum diameter in a direction that is not parallel to the X axis, it is not regarded as the maximum diameter.
Examples of the laser interference type three-dimensional shape analysis apparatus include a trade name “Shape Analysis Laser Microscope VK-X Series” manufactured by Keyence Corporation.

The glossy printed layer preferably further contains a binder resin.
Examples of the binder resin include cured products of thermoplastic resins and curable resins (thermosetting resin compositions and ionizing radiation curable resin compositions). Among these, a thermoplastic resin that easily improves the adhesion to the base material, the colored layer described later, and the protective layer is preferable.
Examples of the thermoplastic resin as the binder resin include polyester resins, urethane resins, epoxy resins, melamine resins, alkyd resins, phenol resins, acrylic resins, and cellulose resins.

  The blending ratio of the binder resin and the metal scale is preferably 55:45 to 30:70, more preferably 50:50 to 35:65 in terms of solid content. By setting the metal scale to 45 or more with respect to the binder resin 55, it becomes easy to obtain a sufficient metallic luster, and by setting the metal scale to 70 or less with respect to the binder resin 30, the printability of the glossy printed layer, the printed matter Workability can be improved easily.

The thickness of the glossy printed layer is preferably from 0.15 to 1.50 μm, more preferably from 0.20 to 1.00 μm, from the viewpoint of uneven distribution and arrangement of the metal scales and from the viewpoint of concealment. 0.25 to 0.75 μm is more preferable.
In addition, the thickness of the glossy printed layer is measured at, for example, 20 thicknesses from a cross-sectional image taken using a scanning electron microscope (SEM), a transmission electron microscope (TEM), or a scanning transmission electron microscope (STEM). And it can calculate from the average value of the value of 20 places. When the film thickness to be measured is on the order of μm, it is preferable to use SEM, and when it is on the order of nm, it is preferable to use TEM or STEM. In the case of SEM, the acceleration voltage is preferably 1 kv to 10 kV and the magnification is preferably 1000 to 7000 times. In the case of TEM or STEM, the acceleration voltage is preferably 10 kv to 30 kV and the magnification is preferably 50,000 to 300,000 times.
The thickness of layers other than the glossy printed layer can also be measured by the same method as described above.

  The gloss printing layer may contain a colorant such as titanium oxide, zinc white, carbon black, iron oxide, iron yellow, ultramarine, metallic pigment, pearl pigment, etc. in order to make the gloss printing layer have a desired color. .

  The specular gloss at 60 degrees of JIS Z8741: 1997 on the surface of the glossy printed layer is preferably 150% or more, more preferably 200% or more, and further preferably 250% or more. The upper limit of the specular gloss on the surface of the glossy printed layer is about 500%. By setting the mirror glossiness of the glossy printed layer within the above range, the metallic gloss of the printed matter can be easily improved.

Glossy printing layer is coated with ink for glossy printing layer, which is prepared by diluting the components that form glossy printing layer with a solvent, and dried on the substrate (or on the sealing layer formed on the substrate). And can be formed by ultraviolet irradiation.
The ink for the glossy printing layer preferably contains 600 to 1100 parts by mass of the solvent with respect to 100 parts by mass of the total solid content from the viewpoint of coexistence of uneven distribution of metal scales and drying efficiency. Examples of the solvent include ethyl acetate, isopropyl alcohol (IPA), ethanol, normal propyl acetate (NPAC), and a mixture thereof.

<Colored layer>
The printed material preferably has a colored layer for the purpose of enhancing the design of the printed material.
The position of the colored layer in the printed material in the thickness direction is arbitrary. The colored layer may be formed on the substrate where the glossy printed layer is not formed, but it is preferably formed on the glossy printed layer from the viewpoint of design. Moreover, when forming a colored layer on a glossy printed layer, a colored layer may be formed in the whole surface on a glossy printed layer, and a colored layer may be formed in at least one part on a glossy printed layer.

  The colored layer is formed by printing or the like, and may be formed by single color solid printing or multicolor printing. Moreover, you may form a pattern with a colored layer. The pattern can be used without particular limitation as long as it is a pattern used in normal printing (for example, letters, numbers, figures, symbols, landscapes, people, animals, characters, etc.).

As the ink used for forming the colored layer, an ink obtained by appropriately mixing a colorant such as a binder resin, a pigment and a dye, an extender pigment, a solvent, a stabilizer, a plasticizer, a catalyst, and a curing agent is used.
The binder resin is not particularly limited. For example, acrylic resin, styrene resin, polyester resin, urethane resin, chlorinated polyolefin resin, vinyl chloride-vinyl acetate copolymer resin, polyvinyl butyral resin, alkyd resin. , Petroleum resins, ketone resins, epoxy resins, melamine resins, fluorine resins, silicone resins, fiber derivatives, rubber resins, and the like. These resins can be used alone or in admixture of two or more.

  The thickness of the colored layer can be appropriately adjusted in the range of about 0.1 to 20 μm in consideration of the form of the colored layer and the intended design. You may contain additives, such as antioxidant and a ultraviolet absorber, in a colored layer.

<Protective layer>
In order to improve the scratch resistance and weather resistance, the printed material preferably has a protective layer on the surface having the glossy printed layer on the basis of the substrate. The protective layer is preferably formed so as to cover the entire area of the glossy printed layer and the colored layer provided as necessary. The protective layer is more preferably formed so as to cover the entire area of the surface of the printed material on the side having the glossy printed layer.
The protective layer preferably contains a cured product of the curable resin composition. Moreover, it is preferable that the ratio of the hardened | cured material of the curable resin composition in all the resin components of a protective layer is 80 mass% or more, It is more preferable that it is 90 mass% or more, It is further that it is 99 mass% or more preferable.
Examples of the curable resin composition include a thermosetting resin composition and an ionizing radiation curable resin composition.

  The thermosetting resin composition is a composition containing at least a thermosetting resin, and is a resin composition that is cured by heating. Examples of the thermosetting resin include acrylic resin, urethane resin, phenol resin, urea melamine resin, epoxy resin, unsaturated polyester resin, and silicone resin. In the thermosetting resin composition, a curing agent is added to these curable resins as necessary.

The ionizing radiation curable resin composition is a composition containing a compound having an ionizing radiation curable functional group (hereinafter also referred to as “ionizing radiation curable compound”). Examples of the ionizing radiation curable functional group include an ethylenically unsaturated bond group such as a (meth) acryloyl group, a vinyl group, and an allyl group, an epoxy group, and an oxetanyl group. As the ionizing radiation curable compound (in the case of ultraviolet curing, sometimes referred to as “ultraviolet curable compound”), a compound having an ethylenically unsaturated bond group is preferable, and has two or more ethylenically unsaturated bond groups. A compound is more preferable, and among them, a polyfunctional (meth) acrylate compound having two or more ethylenically unsaturated bond groups is more preferable. As the polyfunctional (meth) acrylate-based compound, any of a monomer and an oligomer can be used. However, a monomer is preferable from the viewpoint of improving scratch resistance and penetration resistance due to high crosslinking density.
The ionizing radiation means an electromagnetic wave or a charged particle beam having an energy quantum capable of polymerizing or cross-linking molecules, and usually ultraviolet (UV) or electron beam (EB) is used. Electromagnetic waves such as X-rays and γ-rays, and charged particle beams such as α-rays and ion beams can also be used.

Among polyfunctional (meth) acrylate monomers, bifunctional (meth) acrylate monomers include ethylene glycol di (meth) acrylate, bisphenol A tetraethoxydiacrylate, bisphenol A tetrapropoxydiacrylate, and 1,6-hexanediol. Examples include diacrylate.
Examples of the tri- or higher functional (meth) acrylate monomer include trimethylolpropane tri (meth) acrylate, pentaerythritol tri (meth) acrylate, pentaerythritol tetra (meth) acrylate, dipentaerythritol hexa (meth) acrylate, di Examples include pentaerythritol tetra (meth) acrylate and isocyanuric acid-modified tri (meth) acrylate.
The (meth) acrylate-based monomer may be modified by partially modifying the molecular skeleton, and is modified with ethylene oxide, propylene oxide, caprolactone, isocyanuric acid, alkyl, cyclic alkyl, aromatic, bisphenol, or the like. Can also be used.
2-6 are preferable and, as for the number of functional groups of a polyfunctional (meth) acrylate monomer, 2-3 are more preferable.

Moreover, examples of the polyfunctional (meth) acrylate oligomer include acrylate polymers such as urethane (meth) acrylate, epoxy (meth) acrylate, polyester (meth) acrylate, and polyether (meth) acrylate.
Urethane (meth) acrylate is obtained by reaction of polyhydric alcohol and organic diisocyanate with hydroxy (meth) acrylate, for example.
A preferable epoxy (meth) acrylate is a (meth) acrylate obtained by reacting (meth) acrylic acid with a tri- or higher functional aromatic epoxy resin, alicyclic epoxy resin, aliphatic epoxy resin or the like. (Meth) acrylates obtained by reacting the above aromatic epoxy resins, alicyclic epoxy resins, aliphatic epoxy resins and the like with polybasic acids and (meth) acrylic acid, and bifunctional or higher functional aromatic epoxy resins, It is a (meth) acrylate obtained by reacting an alicyclic epoxy resin, an aliphatic epoxy resin or the like with a phenol and (meth) acrylic acid.
The ionizing radiation curable compounds can be used alone or in combination of two or more. The ionizing radiation curable compound preferably contains 50% by mass or more, more preferably 80% by mass or more of a polyfunctional (meth) acrylate monomer.

When the ionizing radiation curable compound is an ultraviolet curable compound, the ionizing radiation curable composition (ultraviolet curable resin composition) preferably contains additives such as a photopolymerization initiator and a photopolymerization accelerator. .
Examples of the photopolymerization initiator include one or more selected from acetophenone, benzophenone, α-hydroxyalkylphenone, Michler's ketone, benzoin, benzyldimethyl ketal, benzoylbenzoate, α-acyloxime ester, thioxanthones, and the like.
The photopolymerization accelerator can reduce polymerization inhibition by air during curing and increase the curing speed. For example, p-dimethylaminobenzoic acid isoamyl ester, p-dimethylaminobenzoic acid ethyl ester, etc. One or more selected may be mentioned.
The ionizing radiation curable resin composition may contain additives such as a light stabilizer, an antioxidant, and a leveling agent.

  It is preferable that the protective layer contains substantially no particles from the viewpoint of improving the metallic luster. “Containing substantially no particles in the protective layer” means that the proportion of particles in the total solid content of the protective layer is 0.5% by mass or less, preferably 0.1% by mass or less, more Preferably it means 0 mass%.

  The thickness of the protective layer is preferably 0.5 to 5.0 μm, and more preferably 0.8 to 1.5 μm.

<Seamless layer>
When the substrate is a material that easily penetrates the solvent (particularly when the substrate is a paper substrate), it is preferable to form a sealing layer between the substrate and the glossy printed layer.
By forming a sealing layer between the substrate and the glossy printed layer, as described above, it is easy to make the metal scales unevenly distributed on the glossy printed layer in the process of forming the glossy printed layer on the substrate. And the metallic gloss of the glossy printed layer can be easily improved.
Further, when the surface of the base material is rough, the surface of the base material can be smoothed by the sealing layer, so that the ratio of the diffused reflected light is reduced and the metallic gloss of the printed matter can be easily improved.

  The sealing layer is preferably formed at a location corresponding to the location where the glossy printed layer is formed on the substrate. In addition, the sealing layer is formed on the entire surface of the base material from the viewpoint of eliminating the troublesome alignment of the sealing layer and the glossy printing layer and uniformizing the physical properties of the substrate composed of the base material and the sealing layer. It is preferable to do.

The sealing layer preferably contains a resin component such as a thermoplastic resin or a cured product of the curable resin composition as a main component. Among these, a thermoplastic resin is preferable from the viewpoint of the processability of the convex part and / or the concave part with respect to the surface of the printed matter and the adhesiveness with the glossy printed layer. Moreover, from the viewpoint of enhancing the sealing effect, a cured product of the curable resin composition is preferable.
The main component means 50% by mass or more of the total solid content of the filler layer, preferably 70% by mass or more, and more preferably 90% by mass or more.

Examples of the thermoplastic resin include polyester resin, urethane resin, epoxy resin, melamine resin, alkyd resin, phenol resin, acrylic resin, and cellulose resin.
As a curable resin composition, the thing similar to embodiment of the curable resin composition of a protective layer can be used.

  The sealing layer preferably has a thickness of 2 to 40 μm, more preferably 3 to 30 μm, and more preferably 4 to 25 μm from the viewpoints of smoothing the base material and sealing effect, and processing suitability. More preferably, it is more preferably 5 to 20 μm.

<Convex part and / or concave part>
The printed matter of the present invention has a convex portion and / or a concave portion on at least a part of the surface corresponding to the location where the glossy printed layer is present in the plane direction of the printed matter on the surface having the glossy printed layer with respect to the substrate. It is necessary to have.
Further, in the printed matter of the present invention, at least a part of the convex portion and / or the concave portion is inclined to different sides with respect to the perpendicular to the surface of the printed matter, and the pair of the inclination angles with respect to the surface of the printed matter does not continuously change. It is necessary to satisfy the following conditions (a) and / or (b).
(A) In an arbitrary cross section that traverses the convex part and / or the concave part, a length X of a straight line connecting the start points of the pair of slopes, and a length Y of a straight line connecting the end points of the pair of inclination angles Compare Of X and Y, S / L is 0.40 or less, where L is the longer one and S is the shorter one.
(B) A rough surface is provided on the surface of one of the pair of slopes.
The convex portion and the concave portion can be formed by, for example, an embossed plate and a debossed plate.

The printed matter of the present invention has a specific convex portion and / or concave portion as described above, so that the metallic gloss of the portion having the convex portion and / or the concave portion can be strongly felt, and the design property is excellent. Can do.
In addition, when a printed matter has a plurality of convex portions and / or concave portions, the effect of the present invention is exhibited if at least any of the convex portions and / or concave portions satisfy the condition (a) and / or the condition (b). Can do.
Hereinafter, the reason why the metallic luster can be strongly felt by satisfying the condition (a) and / or the condition (b) will be described.

For example, as shown in FIG. 5, consider a case where a portion having a convex portion of the printed matter 100 is observed from the inclined surface 31 side. In FIG. 5, reference numeral 50 indicates a human eye, and a dotted line extending from the eye 50 indicates a human visual field. In addition, the printed material 100 is observed in an environment where light enters from various directions.
In this case, since most of the light reflected by the slope 31 enters the visual field of human eyes, the slope 31 feels bright. On the other hand, since most of the light reflected by the slope 32 is out of the visual field of the human eye, the slope 32 is felt dark.
When there is a difference between light and dark between the two regions, human beings feel that light and dark are emphasized by the Mach effect. However, in FIG. 5, when the ratio of the upper surface 33 is large (when the S / L of the condition (a) exceeds 0.40), it becomes difficult to obtain a light and dark enhancement effect due to the Mach effect. This is because the brightness of the upper surface 33 is an intermediate value between the brightness of the slope 31 and the brightness of the slope 32, and the difference in brightness between the slope 31 and the slope 32 becomes difficult to recognize due to the large proportion of the upper surface 33.
On the other hand, when the ratio of the upper surface 33 is small (when the S / L of the condition (a) is 0.40 or less), it is possible to obtain a light / dark enhancement effect by the Mach effect. In addition, the cause of human feeling of metallic luster is a sudden change in luminance due to an angle peculiar to metal. Therefore, by setting the S / L of the condition (a) to 0.40 or less, the metallic luster can be strongly felt by the bright and dark enhancement effect (brightness change enhancement effect) by the Mach effect.
The above description is for the convex portion, but the same can be said for the concave portion.

On the other hand, in the case of condition (b), the difference between the brightness of the slope 31 and the brightness of the slope 32 (slope having the rough surface 40) becomes more remarkable when observed from the slope having no rough surface. . This is because the ratio of light entering the visual field of the human eye among light reflected by the inclined surface having a rough surface decreases due to diffusion and multiple reflection.
Therefore, when the condition (b) is satisfied, even if the S / L exceeds 0.40, it is possible to obtain a light / dark enhancement effect (brightness change enhancement effect) by the Mach effect and to feel a strong metallic luster. .
The rough surface 40 can be formed by, for example, a plurality of fine uneven shapes. The height and / or depth of each uneven shape forming the rough surface 40 is preferably 0.05 mm or less, more preferably 0.03 mm or less, and further preferably 0.02 mm or less. preferable.
The rough surface 40 may be provided on the entire slope 32 or may be provided on a part of the slope 32 as shown in FIG. Further, the ratio of the length of the portion having the rough surface in the length of the slope 32 (the length from the start point (i) to the end point (ii) of the slope 32) is preferably 50% or more, and 70% or more. It is more preferable that it is 90% or more.

The printed matter of the present invention can obtain the above effect by satisfying either one of the conditions (a) and (b). However, when both the conditions (a) and (b) are satisfied, the metallic luster is obtained. Is preferable in that it can be felt more strongly. In addition, when satisfy | filling condition (a), you may have a rough surface on both sides of a slope.
Moreover, although a convex part and a recessed part can acquire the said effect as long as any one of conditions (a) and conditions (b) is satisfy | filled, the direction of a recessed part is preferable at the point which is easy to raise metallic luster more.

  Note that in the case of a slope whose inclination angle with respect to the surface of the printed matter changes continuously, a difference in brightness is formed in one slope, so that the brightness difference between a pair of slopes is reduced. For this reason, in the case of an inclined surface in which the inclination angle with respect to the surface of the printed material changes continuously, even if the condition (a) and / or the condition (b) is satisfied, the metallic luster cannot be felt strongly.

The smaller the S / L of the condition (a), the stronger the metallic luster can be felt. However, when the S / L is too small, the physical strength of the convex part and / or the concave part tends to be weak.
For this reason, S / L is preferably 0.05 or more and 0.40 or less, more preferably 0.07 or more and 0.37 or less, and further preferably 0.08 or more and 0.35 or less. preferable.
In the condition (a), the direction of an arbitrary cross section that intersects the convex portion and / or the concave portion is not particularly limited, but in the case where the convex portion and / or the concave portion has a shape extending in an arbitrary direction, the direction of the cross section. Is preferably in a direction perpendicular to the extending direction of the convex part and / or the concave part.

Further, when the convex part and / or the concave part has a shape extending in an arbitrary direction, from the viewpoint of improving the metallic luster, the conditions (a) and / or Or it is preferable to satisfy | fill conditions (b), It is more preferable to satisfy | fill in 70% or more, It is more preferable to satisfy | fill in 90% or more.
For example, it is assumed that there is a convex portion whose shape (planar shape) observed from directly above is the shape of FIG. The convex part of FIG. 7 is formed from the left slope 31, the upper surface 33, and the right slope 32, and has a shape in which the S / L changes in the extending direction (vertical direction in FIG. 7). In the case of the convex part of FIG. 7, it is preferable that the condition (a) is satisfied (S / L is 0.40 or less) at 50% or more of the total length z of the convex part.
The same applies to S, angle d, height H, and depth D described later. That is, when the convex part and / or the concave part has a shape extending in an arbitrary direction, in 50% or more (more preferably 70% or more, more preferably 90% or more) of the total length of the convex part and / or the concave part. , S, angle d, height H, and depth D are preferably in the ranges described below.

In addition, as for the convex part and recessed part of FIGS. 1-3, the starting point (i) and end point (ii) of a slope are clear. However, when the convex portion and the concave portion are formed by the embossed plate and the debossed plate, the start point (i) and the end point (ii) of the inclined surface are not usually clear as in FIGS. It changes smoothly like.
When the vicinity of the start point and the end point of the slope changes gently, the start point (i) and the end point (ii) are determined as shown in FIG. Specifically, the starting point (i) is the intersection of the tangent of the slope and the tangent of the smooth surface of the printed material. Further, the end point (ii) is a point where the outer shape of the convex portion or the concave portion deviates from the tangent line of the slope.
Note that the operation in FIG. 6 can be performed based on, for example, a photograph of a cross-section of the printed material taken with an SEM or TEM.

The printed material preferably has the above S of less than 1.0 mm. By setting S to less than 1.0 mm, it is possible to more easily recognize the light / dark difference between the pair of slopes and to feel the metallic luster more strongly.
In addition, when S is too small, it exists in the tendency for the physical strength of a convex part and / or a recessed part to become weak. For this reason, S is more preferably 0.1 mm or more and less than 1.0 mm, further preferably 0.1 mm or more and 0.8 mm or less, and further preferably 0.1 mm or more and 0.5 mm or less. preferable.

The angle d formed by the surface of the printed material and the pair of slopes is preferably 2.0 to 60.0 degrees, more preferably 3.5 to 45.0 degrees, and 6.0 to 20.0. More preferably, the degree.
By setting the angle d to 2.0 degrees or more, it is possible to more easily recognize the light / dark difference between the pair of slopes, and to easily feel the metallic luster strongly. Moreover, the fall of the physical strength of a convex part and / or a recessed part can be suppressed by making angle d 60.0 degrees or less.
In addition, although it is preferable that the angle of one slope which comprises a pair of slope and the angle of the other slope are the same, you may differ in the range in which the effect of this invention is acquired.

The height H of the convex portion and / or the depth D of the concave portion is preferably 0.02 to 1.00 mm, more preferably 0.03 to 0.50 mm, and 0.05 to 0. More preferably, it is 30 mm.
By setting the height H of the convex part and / or the depth D of the concave part to 0.02 mm or more, it is possible to make it easier to recognize the difference in brightness between the pair of slopes and to make the metallic luster more easily felt. . In addition, by setting the height H of the convex portion and / or the depth D of the concave portion to 1.00 mm or less, it is easy to suppress the destruction of each layer constituting the printed matter when the surface of the printed matter is processed to be uneven. it can.

The specific shape of a convex part and / or a recessed part is not specifically limited. For example, the shape of the convex part and / or the concave part includes a trapezoidal cross section as shown in FIGS. 1 to 3 (including a rounded short side connecting end points of a pair of slopes), and a triangular cross section ( (Including those whose vertices are rounded). In addition, when a convex part and / or a recessed part are made into a complicated shape, while the shaping | molding of a convex part and / or a recessed part becomes difficult, the design effect does not improve significantly. For this reason, the convex part and / or the concave part have a trapezoidal cross section (including a rounded short side connecting end points of a pair of slopes) and a triangular cross section (including a rounded vertex). preferable.
Moreover, it is preferable that the convex part and / or the concave part extend in an arbitrary direction. When the convex part and / or the concave part extend in an arbitrary direction, the metallic luster can be strongly felt at a long distance, and the design can be improved. The method of extension may be linear extension as shown in the upper left of FIG. 4 or curved extension as shown in the lower right of FIG.

  The specular glossiness at 60 degrees of JIS Z8741: 1997 on the surface having the glossy printed layer on the basis of the substrate of the printed material is preferably 80% or more and 90% or more from the viewpoint of metallic luster. Is more preferably 100% or more, and further preferably 120% or more.

[container]
The container of the present invention is formed using the above-described printed material of the present invention.

Examples of the container include, but are not limited to, a chemical container, a cosmetic container, a beverage container, and a food container.
The container of this invention can feel a metallic luster feeling strongly in the location which has a convex part and / or a recessed part, and is excellent in the designability. In addition, since curling of the printed matter is suppressed, it is possible to prevent a trouble caused by curling from occurring during the manufacturing process of the container. In addition, when a fine scratch is generated on the surface of the printed matter of the present invention, the scratch can be made inconspicuous as compared with a case where a scratch is generated on the surface of the printed matter using metal vapor deposition.

  EXAMPLES Next, although an Example demonstrates this invention further in detail, this invention is not limited at all by this example.

1. Measurement and Evaluation The following measurements and evaluations were performed on the printed materials prepared in Examples and Comparative Examples. The results are shown in Table 1.

1-1. Specular Glossiness According to JIS Z8741: 1997, using BYK Gardner's micro-TRI-gloss as a measuring instrument, the surface on the side having the glossy printed layer on the basis of the base material of the printed material of the example and the comparative example, 60 degree mirror surface Gloss was measured. In addition, the measurement location was made into the location which does not have a convex part and a recessed part.

1-2. Metallic Luster In an environment that is not a single illumination (multiple illuminations or a wide range of illuminations), the printed materials of Examples and Comparative Examples were tilted at various angles, and the degree of metallic gloss was visually evaluated. Twenty people evaluated and calculated an average score, with 2 points showing a strong metallic luster, 1 point showing a metallic luster, and 0 points showing no metallic luster.
“AA” having an average score of 1.8 or more, “A” having an average score of 1.6 or more and less than 1.8, “B” having an average score of 1.5 or more and less than 1.6, A sample having an average score of 1.0 or more and less than 1.5 was designated as “C”, and a sample having an average score of less than 1.0 was designated as “D”.

2. Production of printed matter [Example 1]
On the entire coated surface side of the base material (basic weight 235 g / m ² single-sided ivory paper), the coating layer ink 1 having the following prescription is applied so that the thickness after drying is 6 μm, dried and irradiated with ultraviolet rays. The sealing layer (cured material layer of the ionizing radiation curable resin composition) was formed.
Next, the gloss printing layer ink 2 having the following formulation was applied to the entire surface of the sealing layer so that the thickness after drying was 0.50 μm and dried to form a gloss printing layer. The thickness of the gloss print layer in which the metal scales were not substantially present was 0.30 μm, and the thickness of the metal scale unevenly distributed region was 0.20 μm.
Subsequently, the colored layer ink was applied to an arbitrary portion on the glossy printed layer by offset printing to form a yellow layer. Next, the protective layer ink 3 is applied by flexographic printing so that the thickness after drying is 1.0 μm so as to cover the entire surface of the colored layer and the glossy printed layer, and is irradiated with ultraviolet rays. A cured product layer of an ultraviolet curable resin composition) was formed.
Subsequently, using a trapezoidal cross-section embossed plate, a convex portion was formed on the surface having the glossy printed layer (the surface of the protective layer) on the basis of the substrate, and the printed matter of Example 1 was obtained. Table 1 shows the heights H, S, and L of the protrusions formed on the printed matter, and the inclination angles.

<Ink for sealing layer 1>
・ Ionizing radiation curable compound 70 parts (BASF Japan, trade name: Lumogen OVD Primer301)
(Mixture of bifunctional acrylate monomer and trifunctional acrylate monomer)
・ Solvent (ethyl acetate) 30 parts

<Glossy printing layer ink 2>
・ Binder resin (nitrified cotton) 4.8 parts (manufactured by DIC Graphics)
(Product name: XS-763 Medium NT-No. 1)
・ 7.2 parts of aluminum scale (average length 14 μm, average thickness 0.04 μm)
・ Solvent (ethyl acetate, IPA, ethanol, NPAC) 88 parts

<Ink for protective layer 3 (solvent-free type)>
・ 100 parts of UV curable resin composition (trade name: UV Flexo 500 series (medium), viscosity: 400 mPa · s, manufactured by T & K TOKA Corporation)

[Examples 2 to 7]
Except having changed the embossing board, it carried out similarly to Example 1, and obtained the printed matter of Examples 2-7. Table 1 shows the heights H, S, and L of the protrusions formed on the printed matter, and the inclination angles.

[Examples 8 to 9]
Except having changed the embossing board into the debossing board, it carried out similarly to Example 1, and obtained the printed material of Examples 8-9. Table 1 shows the depths D, S, and L of the recesses formed in the printed matter, and the inclination angles.

[Comparative Example 1]
A printed matter of Comparative Example 1 was obtained in the same manner as in Example 1 except that the convex portion was not formed by the embossed plate.

[Comparative Example 2]
A printed matter of Comparative Example 2 was obtained in the same manner as in Example 1 except that the embossed plate was changed. Table 1 shows the heights D, S, and L of the protrusions formed on the printed matter, and the inclination angles.

  From the results in Table 1, it can be confirmed that the printed materials of Examples 1 to 9 have a strong metallic luster without using metal vapor deposition means and are excellent in design.

  The printed matter and container of the present invention are useful in that they have a strong metallic luster without using metal vapor deposition means and are excellent in design.

10: Base material, 20: Glossy printed layer, 31, 32: Slope, 40: Rough surface, 100: Printed material

Claims (10)

A printed matter having a glossy printed layer on at least a part of a substrate, the glossy printed layer including metal scales,
The printed matter has a convex portion and / or a concave portion on at least a part of a surface on the side having the glossy printed layer with respect to the base material and corresponding to the location of the glossy printed layer in the planar direction of the printed matter. Have
At least a part of the convex part and / or the concave part has a pair of inclined surfaces that are inclined to different sides with respect to a normal to the surface of the printed matter and the inclination angle with respect to the surface of the printed matter does not continuously change. Printed matter satisfying (a) and / or (b).
(A) In an arbitrary cross section that traverses the convex part and / or the concave part, a length X of a straight line connecting the start points of the pair of slopes, and a length Y of a straight line connecting the end points of the pair of inclination angles Compare Of X and Y, S / L is 0.40 or less, where L is the longer one and S is the shorter one.
(B) A rough surface is provided on the surface of one of the pair of slopes.   The printed matter according to claim 1, wherein the S is less than 1.0 mm.   The printed matter according to claim 1 or 2, wherein an angle formed between the surface of the printed matter and the pair of inclined surfaces is 2.0 to 60.0 degrees.   The printed matter according to any one of claims 1 to 3, wherein a height of the convex portion and / or a depth of the concave portion is 0.02 to 1.00 mm.   The said convex part and / or recessed part are extended in arbitrary directions, and satisfy | fills said condition (a) and / or said condition (b) in 50% or more of the full length of the said convex part and / or recessed part. The printed matter according to any one of the above.   The printed matter according to any one of claims 1 to 5, wherein a pattern is formed by the glossy printed layer.   The printed matter according to any one of claims 1 to 6, further comprising a colored layer on the glossy printed layer.   The printed matter according to any one of claims 1 to 7, further comprising a protective layer on a surface of the printed matter on the side having the glossy printed layer with reference to the base material.   The printed material according to claim 1, wherein the substrate is a paper substrate.   A container using the printed matter according to any one of claims 1 to 9.