JP6759861B2 - Printed matter, container using printed matter and sorting method of printed matter - Google Patents

Description

The present invention relates to a printed matter, a container using the printed matter, and a method for selecting the printed matter.

Various printed materials may be required to have a high-class feel. In order to give a sense of quality, for example, a design is made to increase the mirror glossiness.
For example, in Patent Document 1, a metallic luster layer is formed to give a high-class feeling to a printed matter.

On the other hand, in recent years, a printed matter having a simple texture may be required as a performance contrary to the addition of a sense of quality.
As a means for imparting a simple texture to the printed matter, it is conceivable to use a paper base material having a fibrous texture or a wood texture such as kraft paper. Regarding kraft paper, for example, Patent Document 2 has been proposed.

Japanese Unexamined Patent Publication No. 2003-2322 Japanese Unexamined Patent Publication No. 2015-48563

Although the printed matter of Patent Document 1 has an excellent sense of quality, its simple texture has not been examined at all.
Further, although the kraft paper of Patent Document 2 is excellent in terms of simple texture, there is a problem that it is far from high-class. Further, since the surface of the kraft paper of Patent Document 2 is rough, the pattern is not printed neatly, and there is a problem that the kraft paper has a poor sense of quality from this viewpoint.

An object of the present invention is to provide a printed matter having a simple texture and a high-class feeling, a container using the printed matter, and a method for selecting the printed matter.

In order to solve the above problems, the present invention provides the following [1] to [3] printed matter, a container using the printed matter, and a method for selecting the printed matter.
[1] A printed matter having a pattern layer at an arbitrary position on a base material, and the printed matter has a surface protective layer at an arbitrary place on the side of the base material having the pattern layer, and the surface protective layer. A printed matter in which the surface protective layer located on the outermost surface of the printed matter satisfies the following conditions 1-1, 1-2 and 2-1.
<Condition 1-1>
The arithmetic mean roughness Ra of JIS B0601: 2001 when the cutoff is 2.5 mm is 1.5 to 3.0 μm.
<Condition 1-2>
The maximum height Rz of JIS B0601: 2001 when the cutoff is 2.5 mm is 10.0 to 18.0 μm.
<Condition 2-1>
JIS Z8741: 1997 of the specular gloss _{G 60} at 60 degrees, the ratio _[G 60 _{/ G 20]} the specular gloss _{G 20} at 20 °, 4.5 to 8.0.
[2] A container made of the printed matter according to the above [1].
[3] As a printed matter having a pattern layer at an arbitrary position on the base material and having a surface protective layer at an arbitrary position on the side of the base material having the pattern layer, the printed matter is the most of the surface protective layers. A method for selecting printed matter, which determines whether or not the surface protective layer located on the surface satisfies the above conditions 1-1, 1-2 and 2-1 and selects those that satisfy the above conditions.

The printed matter and container of the present invention can impart contradictory textures such as a simple texture and a high-class feeling, and are extremely excellent in design. Further, according to the method for selecting printed matter of the present invention, it is possible to accurately select a printed matter having both a simple texture and a high-class feeling.

It is sectional drawing which shows one Embodiment of the printed matter of this invention. It is sectional drawing which shows the other embodiment of the printed matter of this invention.

[Printed matter]
The printed matter of the present invention is a printed matter having a pattern layer at an arbitrary position on a base material, and the printed matter has a surface protective layer at an arbitrary place on the side of the base material having the pattern layer. Among the surface protective layers, the surface protective layer located on the outermost surface of the printed matter satisfies the following conditions 1-1, 1-2 and 2-1.
<Condition 1-1>
The arithmetic mean roughness Ra of JIS B0601: 2001 when the cutoff is 2.5 mm is 1.5 to 3.0 μm.
<Condition 1-2>
The maximum height Rz of JIS B0601: 2001 when the cutoff is 2.5 mm is 10.0 to 18.0 μm.
<Condition 2-1>
JIS Z8741: 1997 of the specular gloss _{G 60} at 60 degrees, the ratio _[G 60 _{/ G 20]} the specular gloss _{G 20} at 20 °, 4.5 to 8.0.

Hereinafter, embodiments of the printed matter of the present invention will be described.
1 and 2 are cross-sectional views showing an embodiment of the printed matter 100 of the present invention. The printed matter 100 of FIGS. 1 and 2 has a pattern layer 20 at an arbitrary position on the base material 10. The pattern layer 20 of the printed matter 100 of FIG. 2 has a three-layer structure of a first pattern layer 21, a second pattern layer 22, and a third pattern layer. Further, the printed matter 100 of FIGS. 1 and 2 has a surface protective layer 30 at an arbitrary position on the side of the base material 10 having the pattern layer 20. Further, the printed matter 100 of FIGS. 1 and 2 has a metallic luster layer 40 at an arbitrary position on the surface protective layer 30.

(Base material)
The material of the base material is not particularly limited as long as it is a material used for conventional printed matter, but high-quality paper, medium-quality paper, kraft paper, coated paper, synthetic paper, impregnated paper, laminated paper, and coating for printing. Examples thereof include paper such as paper and coating paper for recording, plastic films such as polyethylene terephthalate film, polyethylene film, polypropylene film and polycarbonate film, and composites thereof.
Among these base materials, paper is preferable because it tends to give a simple texture. In addition, in this specification, "a simple texture" means a texture which gives an impression that the surface is moderately rough and human hands are not excessively applied.

The thickness of the base material is not particularly limited, but in the case of paper, it is usually about 150 to 550 g / m ² , and in the case of a plastic film, it is usually about 9 to 50 μm.

Further, in order for the roughness on the surface protective layer to easily satisfy the conditions 1-1, 1-2 and the like, it is preferable to use a base material having a surface shape having the following range. When the front and back surfaces of the base material have different surface shapes, it is preferable that at least one surface shape is in the following range.

(Surface shape of base material)
The surface shape of the base material preferably has an arithmetic mean roughness Ra of JIS B0601: 2001 of 1.7 to 3.3 μm, preferably 2.0 to 3.0 μm, when the cutoff is 2.5 mm. Is more preferable, and the thickness is even more preferably 2.2 to 2.7 μm.
By setting Ra of the base material in the above range, it is possible to easily satisfy the conditions 1-1 and the conditions 2-2 and 2-3 described later, and it is possible to easily enhance the simple texture and luxury of the printed matter. ..

As for the surface shape of the base material, the maximum height roughness Rz of JIS B0601: 2001 when the cutoff is 2.5 mm is preferably 11.0 to 20.0 μm, and 13.0 to 20.0 μm. It is more preferably 15.0 to 19.0 μm, and even more preferably 15.0 to 19.0 μm.
By setting the Rz of the base material in the above range, it is possible to easily satisfy the conditions 1-2, and it is possible to easily enhance the simple texture and luxury of the printed matter.
Further, by setting the Rz of the base material to 11.0 μm or more, it is possible to prevent the pattern from being artificially felt due to the pattern becoming too homogeneous, and it is possible to easily enhance the simple texture of the entire printed matter. Further, by setting the Rz of the base material to 20.0 μm or less, it is possible to suppress a decrease in the homogeneity of the pattern and easily enhance the sense of quality.

As for the surface shape of the base material, the maximum valley depth Rv of the roughness curve of JIS B0601: 2001 when the cutoff is 2.5 mm is preferably 6.0 to 15.0 μm, preferably 8.0 to 15.0 μm. It is more preferably 12.0 μm, and even more preferably 9.0 to 11.0 μm.
By setting the Rv of the base material in the above range, it is possible to easily satisfy the conditions 1-3 described later and the conditions 2-2 and 2-3 described later, which enhances the simple texture and luxury of the printed matter. It can be done easily.
Further, by setting the Rv of the base material to 6.0 μm or more, it is possible to prevent the pattern from being artificially felt due to the pattern becoming too homogeneous, and it is possible to easily enhance the simple texture of the entire printed matter. Further, by setting the Rv of the base material to 15.0 μm or less, it is possible to suppress the occurrence of omission in the pattern and to easily enhance the sense of quality.

(Pattern layer)
The pattern layer is formed at an arbitrary position on the base material for the purpose of enhancing the design of the printed matter.
The pattern layer can be formed by printing, for example. The pattern layer may be a single layer as shown in FIG. 1, but may be formed from two or more layers as shown in FIG.

The pattern layer can be formed by multicolor printing with process colors of cyan, magenta, yellow, and black, and can also be formed by multicolor printing with special colors, which is performed by preparing plates of individual colors constituting the pattern.

The pattern of the pattern layer is not particularly limited as long as it is a pattern used in normal printing such as wood grain, cork, fiber, letters, numbers, figures, symbols, landscapes, people, animals, and characters. it can. Among these, in order to enhance the simple texture, a pattern expressing natural materials such as wood grain, cork, and fiber is preferable. Further, in order to enhance the design, it is more preferable to combine a pattern expressing a natural material with another pattern.

When the printed matter is observed from the plane direction, it is preferable that the pattern expressing the natural material is formed in an area standard of 50% or more. Further, when the printed matter is observed from the plane direction, it is preferable that all the parts other than the parts where the other patterns are formed are formed from the patterns expressing the natural material.
When a pattern derived from a natural material is combined with another pattern, for example, a pattern derived from the natural material is formed by a pattern layer located below (in the case of FIG. 2, the first pattern layer and the second pattern layer). , Means for forming other patterns in the pattern layer (third pattern layer in the case of FIG. 2) located above.

As the ink used for forming the pattern layer, an ink obtained by appropriately mixing a binder resin with a colorant such as a pigment or a dye, an extender pigment, a solvent, a stabilizer, a plasticizer, a catalyst, a curing agent or the like is used.
The binder resin is not particularly limited, and 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 resin, ketone resin, epoxy resin, melamine resin, fluorine resin, silicone resin, fibrin derivative, rubber resin and the like. These resins can be used alone or in admixture of two or more.

The thickness of the pattern layer is preferably 0.1 to 5.0 μm, preferably 0.5 to 4.5 μm, and even more preferably 1.0 to 4.0 μm. When the pattern layer is formed of two or more layers, the total thickness of each pattern layer is preferably in the above range.
By setting the thickness of the pattern layer to 0.1 μm or more, it is possible to easily improve the designability of the pattern. Further, by setting the thickness of the pattern layer to 5.0 μm or less, it is possible to suppress an increase in artificial texture and easily suppress a deterioration in the simple texture of the entire printed matter.

Additives such as an antioxidant and an ultraviolet absorber may be contained in the pattern layer as long as the effects of the present invention are not impaired.
The pattern layer can be formed by preparing an ink for forming a pattern layer containing each component constituting the pattern layer, applying the ink, and drying and curing as necessary. The pattern layer forming ink is preferably solvent-free. The reason why the pattern layer forming ink is preferably solvent-free is the same as the reason why the surface protective layer forming ink, which will be described later, is preferably solvent-free.
As a means for applying the pattern layer, offset printing and flexographic printing are preferable, and offset printing is more preferable.

(Surface protective layer)
The printed matter of the present invention has a surface protective layer at an arbitrary position on the side having the pattern layer of the base material.
The surface protective layer mainly has a role of adjusting the mirror glossiness of the printed matter, improving the scratch resistance and weather resistance of the printed matter, and protecting the pattern layer. In order to effectively fulfill this role, as shown in FIGS. 1 and 2, the surface protective layer 30 is preferably formed so as to cover the entire region of the base material 10 on the side having the pattern layer 20.

Further, the printed matter of the present invention requires that the surface protective layer located on the outermost surface of the printed matter among the surface protective layers satisfies the following conditions 1-1, 1-2 and 2-1.

<Condition 1-1>
The arithmetic mean roughness Ra of JIS B0601: 2001 when the cutoff is 2.5 mm is 1.5 to 3.0 μm.
<Condition 1-2>
The maximum height Rz of JIS B0601: 2001 when the cutoff is 2.5 mm is 10.0 to 18.0 μm.
<Condition 2-1>
JIS Z8741: 1997 of the specular gloss _{G 60} at 60 degrees, the ratio _[G 60 _{/ G 20]} the specular gloss _{G 20} at 20 °, 4.5 to 8.0.

Conditions 1-1 and 1-2 are parameters related to the surface shape.
If the Ra is less than 1.5 μm, it is not possible to give a simple texture to the printed matter. Further, when the Ra exceeds 3.0 μm, the surface appears to be rough, and it is not possible to give a high-class feeling to the printed matter.
When the Rz is less than 10.0 μm, the appearance of the printed matter becomes too homogeneous and an artificial impression is given, so that it is not possible to give a simple texture to the entire printed matter. Further, when the Rz exceeds 18.0 μm, it gives the impression that the printed matter has local defects, and it is not possible to give the printed matter a high-class feeling.

Under condition 1-1, Ra is preferably 1.8 to 2.8 μm, more preferably 2.0 to 2.5 μm.
In condition 1-2, Rz is preferably 12.0 to 18.0 μm, more preferably 14.0 to 18.0 μm.
In the present specification, Ra, Rz and Rv mean the average value of the values in the flow direction and the width direction measured 5 times each and 10 times in total.

The simple texture and luxury are greatly influenced by the surface shape of the printed matter. Therefore, by adjusting the surface shape of the surface protective layer located on the outermost surface of the printed matter as in conditions 1-1 and 1-2, it is possible to adjust a simple texture and a high-class feeling to some extent.
However, JIS B0601 which defines the surface shape stipulates that the surface shape is measured by a stylus type surface shape measuring device, and the tip radius of the stylus is at least 2 μm (JIS B0601 applies mutatis mutandis). JIS B0633), fine unevenness cannot be measured, and the distribution of the inclination angle of the surface unevenness that controls the mirror surface glossiness for each angle (for example, 20 degree mirror surface glossiness and 60 degree mirror surface glossiness) is also measured. Can not.
Therefore, in the present invention, the conditions 1-1 and 1-2 are complemented by using the condition 2-1 that can indirectly represent the fine surface shape.

Condition 2-1 indirectly defines the surface shape of the printed matter by the ratio [G ₆₀ / G ₂₀ ] of the 60-degree mirror surface gloss G ₆₀ and the 20-degree mirror surface gloss G ₂₀ .
It is known that the mirror glossiness increases as the incident angle of light increases. However, when the surface shape is rough, the degree of increase in the mirror glossiness when the incident angle of light increases becomes small. That is, the smoother the surface, the larger [G ₆₀ / G ₂₀ ], and the rougher the surface, the smaller [G ₆₀ / G ₂₀ ].
If G ₆₀ / G ₂₀ is less than 4.5, the surface looks rough and it is not possible to give a high-class feeling to the printed matter. Further, when G ₆₀ / G ₂₀ exceeds 8.0, it is not possible to give a simple texture to the printed matter.

G ₆₀ / G ₂₀ is preferably 5.5 to 7.5, more preferably 6.0 to 7.0.
In the present specification, the 60-degree mirror surface gloss G ₆₀ and the 20-degree mirror surface gloss G ₂₀ mean the average value of the measurements at nine points. Further, [G ₆₀ / G ₂₀ ] shall mean a ratio calculated from the average value. The nine points for measuring the 60-degree mirror surface gloss G ₆₀ and the 20-degree mirror surface gloss G ₂₀ are set at arbitrary points as the center measurement points, and two points are set on the left and right in the width direction from the center measurement point, respectively, in the flow direction. It is preferable that there are two locations above and below each. At that time, the interval between each measurement point is arbitrary.
When the printed matter has a metallic luster layer described later, the 60-degree mirror surface gloss G ₆₀ and the 20-degree mirror surface gloss G ₂₀ shall be measured at a place having no metallic luster layer.

Further, in the printed matter of the present invention, it is preferable that the surface protective layer located on the outermost surface of the printed matter among the surface protective layers further satisfies the following conditions 1-3.
<Condition 1-3>
The maximum valley depth Rv of the roughness curve of JIS B0601: 2001 when the cutoff is 2.5 mm is 6.0 to 15.0 μm.

By setting Rv to 6.0 μm or more under Conditions 1-3, it is possible to prevent the appearance of the printed matter from becoming too uniform and to easily impart a simple texture to the entire printed matter. Further, by setting Rv to 15.0 μm or less, it is possible to suppress giving the impression that the printed matter has local defects, and to further enhance the high-class feeling of the printed matter.
Under conditions 1-3, Rv is more preferably 8.0 to 12.0 μm, and even more preferably 9.0 to 11.0 μm.

Further, in the printed matter of the present invention, the surface shape of the base material and the surface shape of the surface protective layer located on the outermost surface of the printed matter among the surface protective layers are selected from the following conditions 3-1 to 3-3. It is preferable to satisfy the above, more preferably two or more, and further preferably all.
Satisfying the following conditions 3-1 to 3-3 means that the surface shape of the base material is not excessively changed by the pattern layer or the surface protection layer. Therefore, by satisfying the following conditions 3-1 to 3-3, it is possible to easily maintain a simple texture derived from a paper base material or the like.
In addition, Ra, Rz and Rv of the following conditions 3-1 to 3-3 are all values in accordance with JIS B0601: 2001 and when the cutoff is 2.5 mm.

<Condition 3-1>
0.85 ≦ [Ra of the surface protective layer located on the outermost surface of the printed matter / Ra of the base material] ≦ 1.00
<Condition 3-2>
0.90 ≦ [Rz of the surface protective layer located on the outermost surface of the printed matter / Rz of the base material] ≦ 1.05
<Condition 3-3>
0.95 ≤ [Rv of the surface protective layer located on the outermost surface of the printed matter / Rv of the base material] ≤ 1.10

Further, in the printed matter of the present invention, from the viewpoint of the balance between the simple texture and the high-class feeling, the surface protective layer located on the outermost surface of the printed matter among the surface protective layers is further subject to the following conditions 2-2 and / or condition 2. It is preferable to satisfy -3.
<Condition 2-2>
G ₆₀ is 6.0 to 15.0%.
<Condition 2-3>
G ₂₀ 0.5 to 3.0%.

In condition 2-2, G ₆₀ is more preferably 6.5 to 13.0%, and even more preferably 7.0 to 10.0%.
In conditions 2-3, G ₂₀ is more preferably 0.8 to 2.0%, and even more preferably 1.0 to 1.5%.

The surface protective layer preferably contains a cured product of a curable resin. Examples of the cured product of the curable resin include a cured product of the thermosetting resin composition and a cured product of the ionizing radiation curable resin composition, and a cured product of the ionizing radiation curable resin composition is preferable.

Since the ionizing radiation curable resin composition can be instantly cured by irradiation with ionizing radiation, it is possible to easily prevent the surface unevenness derived from the substrate from being relaxed by the surface protective layer. In other words, by forming the surface protective layer from the surface protective layer forming ink containing the ionizing radiation curable resin composition, the surface shape of the surface protective layer can be made close to the surface shape of the base material, such as a paper base material. It is possible to easily maintain the simple texture derived from.
In particular, by making the ionizing radiation curable resin composition a solvent-free ionizing radiation curable resin composition, the curing step can be performed without the drying step, so that it is not measured by the contact type surface shape measurement. While making it easier to fill in fine irregularities, it is possible to leave irregularities at a level that can be measured by contact-type surface shape measurement (since it is possible to leave irregularities at a level that can be measured by contact-type surface shape measurement, it is a condition. On the other hand, fine irregularities that are not measured by the contact-type surface shape measurement are easily buried, so that the conditions 2-1 can be easily satisfied.) Therefore, while increasing the glossiness and improving the sense of quality, it is possible to easily maintain the simple texture derived from the paper base material or the like. Further, in order to further exhibit the above-mentioned characteristics, it is preferable to use a solvent-free ionizing radiation curable resin composition having a high tack value.
As described above, by using an ionizing radiation curable resin composition, preferably by using a solvent-free ionizing radiation curable resin composition, and more preferably by using an ionizing radiation curable resin composition having a high tack value. , Conditions 1-1, 1-2 and Condition 2-1 can be easily satisfied.
The "tack value" means a tack value defined by JIS K5701-1: 2000. There is no unit in the tack value, and the higher the value, the greater the stickiness of the ink.

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 ethylenically unsaturated bonding groups such as (meth) acryloyl group, vinyl group and allyl group, and epoxy group and oxetanyl group. As the ionizing radiation curable compound (in the case of ultraviolet curing, it may be referred to as "ultraviolet curable compound"), a compound having an ethylenically unsaturated bond group is preferable. Further, from the viewpoint of improving scratch resistance, a compound having two or more ethylenically unsaturated bond groups is more preferable, and among them, a polyfunctional (meth) acrylate type compound having two or more ethylenically unsaturated bond groups. Compounds are more preferred. As the polyfunctional (meth) acrylate compound, either a monomer or an oligomer can be used.
Note that ionizing radiation means electromagnetic waves or charged particle beams that have energy quanta capable of polymerizing or cross-linking molecules, and usually ultraviolet rays (UV) or electron beams (EB) are used. Electromagnetic waves such as X-rays and γ-rays, and charged particle beams such as α-rays and ion rays can also be used.

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

Examples of the polyfunctional (meth) acrylate-based oligomer include acrylate-based polymers such as urethane (meth) acrylate, epoxy (meth) acrylate, polyester (meth) acrylate, and polyether (meth) acrylate.
Urethane (meth) acrylate is obtained, for example, by reacting a polyhydric alcohol or organic diisocyanate with a hydroxy (meth) acrylate.
Further, the preferable epoxy (meth) acrylate is a (meth) acrylate obtained by reacting a (meth) acrylic acid with a trifunctional or higher functional aromatic epoxy resin, an alicyclic epoxy resin, an aliphatic epoxy resin or the like, and a bifunctional epoxy resin. (Meta) acrylate obtained by reacting the above aromatic epoxy resin, alicyclic epoxy resin, aliphatic epoxy resin, etc. with polybasic acid and (meth) acrylic acid, and bifunctional or higher functional aromatic epoxy resin, It is a (meth) acrylate obtained by reacting an alicyclic epoxy resin, an aliphatic epoxy resin or the like with phenols and (meth) acrylic acid.
The ionizing radiation curable compound may be used alone or in combination of two or more. The ionizing radiation curable compound preferably contains 50% by mass or more of a polyfunctional (meth) acrylate monomer, and more preferably 80% by mass or more.

When the ionizing radiation curable compound is an ultraviolet curable compound, the ionizing radiation curable composition (ultraviolet effective resin composition) preferably contains an additive such as a photopolymerization initiator or a photopolymerization accelerator. ..
Examples of the photopolymerization initiator include one or more selected from acetophenone, benzophenone, α-hydroxyalkylphenone, Michler ketone, benzoin, benzylmethyl ketal, benzoyl benzoate, α-acyloxime ester, thioxanthones and the like.
Further, the photopolymerization accelerator can reduce the polymerization inhibition by air at the time of curing and accelerate the curing rate. For example, from p-dimethylaminobenzoic acid isoamyl ester, p-dimethylaminobenzoic acid ethyl ester and the like. One or more selected species can be mentioned.
The ionizing radiation curable resin composition may contain additives such as a light stabilizer, an antioxidant, and a leveling agent.

The surface protective layer may contain a resin component (cured product of thermosetting resin or thermoplastic resin) other than the cured product of the ionizing radiation curable resin composition. However, from the viewpoint of facilitating the maintenance of a simple texture derived from a paper substrate or the like, the ratio of the cured product of the ionizing radiation curable resin composition to the total resin components of the surface protective layer is 90% by mass or more. Is more preferable, 95% by mass or more is more preferable, and 100% by mass is further preferable.

A matting agent may be contained in the surface protective layer. When the surface protective layer contains a matting agent, it is possible to impart matteness and enhance the design. On the other hand, when the matting agent is not contained in the surface protective layer, the mirror glossiness can be increased to facilitate giving a high-class feeling to the printed matter.
In the surface of the printed matter, the region of the surface protective layer that does not contain the matting agent and the region of the surface protective layer that contains the matting agent may be separated. With such a configuration, a contrast of mirror glossiness is generated, and the design can be enhanced.

Examples of the matting agent include inorganic particles such as silica and alumina, and organic particles such as acrylic particles and styrene particles. The average particle size and the amount of the matting agent added may be appropriately adjusted according to the desired degree of matting.

The surface protective layer may contain additives such as an antioxidant and an ultraviolet absorber as long as the effects of the present invention are not impaired.

The thickness of the surface protective layer is preferably 0.2 to 5.0 μm, preferably 0.3 to 3.0 μm, and even more preferably 0.5 to 1.5 μm.
By setting the thickness of the surface protective layer to 0.2 μm or more, it is possible to easily give a high-class feeling by improving the mirror glossiness, and it is possible to easily improve the scratch resistance and weather resistance of the printed matter. Further, by setting the thickness of the surface protective layer to 5.0 μm or less, it is possible to suppress an increase in artificial texture and easily suppress a deterioration in the simple texture of the entire printed matter.

The surface protective layer is coated, dried, and irradiated with ionizing radiation on a substrate with a surface protective layer forming ink containing a resin component such as an ionizing radiation curable resin composition and a solvent or additive to be added as needed. Can be formed by If the surface protective layer forming ink does not contain a solvent, drying is not necessary. The means for applying the surface protective layer forming ink is not particularly limited, but offset printing and flexographic printing suitable for inks having a high tack value are preferable, and offset printing is more preferable.
The tack value (JIS K5701-1: 2000, roller rotation speed 400 rpm) of the surface protective layer forming ink is 2.0 to 8.0 from the viewpoint of making it easy to satisfy the conditions 1-1, 1-2 and 2-1. Is preferable.

(Metallic luster layer)
The printed matter of the present invention may have a metallic luster layer at any position on the surface protective layer.
By having the metallic luster layer, a gloss contrast is generated in the surface of the printed matter, and a high-class feeling can be further enhanced.
If the proportion of the region forming the metallic luster layer is too large, the simple texture of the printed matter tends to be impaired. Therefore, when the printed matter is observed from the surface direction, the ratio of the region where the metallic luster layer is formed is preferably 20% or less, and more preferably 15% or less. Further, from the viewpoint of giving a high-class feeling to the printed matter by the metallic luster layer, when the printed matter is observed from the surface direction, the ratio of the region where the metallic luster layer is formed is preferably 3% or more, and 5%. The above is more preferable.

The metallic luster layer can be formed, for example, by laminating metal foils or applying and drying an ink for forming a metallic luster layer containing metal particles and a binder resin. Among these, from the viewpoint of further enhancing the sense of quality, it is preferable to form a metallic luster layer with a metal foil.
Examples of the metal constituting the metal foil and metal particles include aluminum, gold, silver, brass, titanium, chrome, nickel, nickel chrome, stainless steel, and the like, and alloys thereof can also be used.

The metallic luster layer 40 may be formed between the pattern layer 20 and the surface protective layer 30, but from the viewpoint of enhancing the sense of quality, it is formed on the surface protective layer 30 as shown in FIGS. 1 and 2. It is preferable to do so. Further, as shown in FIGS. 1 and 2, the metallic luster layer 40 is preferably formed on the region where the pattern layer 20 is formed.
The thickness of the metallic luster layer is not particularly limited, and is usually about 1 to 500 μm.

[container]
The container of the present invention is made by using the above-mentioned printed matter of the present invention.
The container is not particularly limited, and examples thereof include a beverage container and a food container.

The printed matter and container of the present invention have contradictory textures of a simple texture and a high-class feeling, and are extremely excellent in design. According to such printed matter and container of the present invention, consumers can be motivated to purchase, and commercial success can be easily obtained.

[Method of selecting printed matter]
The method for selecting printed matter of the present invention comprises a printed matter having a pattern layer at an arbitrary position on a base material and a surface protective layer at an arbitrary place on the side of the base material having the pattern layer. Among them, it is determined whether or not the surface protective layer located on the outermost surface of the printed matter satisfies the following conditions 1-1, 1-2 and 2-1 and the one that satisfies the conditions is selected.
<Condition 1-1>
The arithmetic mean roughness Ra of JIS B0601: 2001 when the cutoff is 2.5 mm is 1.5 to 3.0 μm.
<Condition 1-2>
The maximum height Rz of JIS B0601: 2001 when the cutoff is 2.5 mm is 10.0 to 18.0 μm.
<Condition 2-1>
JIS Z8741: 1997 of the specular gloss _{G 60} at 60 degrees, the ratio _[G 60 _{/ G 20]} the specular gloss _{G 20} at 20 °, 4.5 to 8.0.

Ra of the determination condition 1-1 is preferably 1.8 to 2.8 μm, and more preferably 2.0 to 2.5 μm.
The Rz of the determination condition 1-2 is preferably 12.0 to 18.0 μm, more preferably 14.0 to 18.0 μm.

In the method for selecting printed matter of the present invention, it is preferable that one or more conditions selected from the following conditions 1-3, 2-2 and 2-3 are additional determination conditions, and two or more are added. It is more preferable to use the determination conditions, and it is further preferable to use all (three) as additional determination conditions.
<Condition 1-3>
The maximum valley depth Rv of the roughness curve of JIS B0601: 2001 when the cutoff of the surface protective layer located on the outermost surface of the printed matter is 2.5 mm is 6.0 to 15.0 μm.
<Condition 2-2>
The G ₆₀ of the surface protective layer located on the outermost surface of the printed matter is 6.0 to 15.0%.
<Condition 2-3>
Wherein _{G 20} of the surface protective layer located on the outermost surface of the printed material 0.5 to 3.0%.

In the additional determination conditions 1-3, Rv is more preferably 8.0 to 12.0 μm, and even more preferably 9.0 to 11.0 μm.
In the additional determination condition 2-2, G ₆₀ is more preferably 6.5 to 13.0%, further preferably 7.0 to 10.0%.
In the additional determination conditions 2-3, G ₂₀ is more preferably 0.8 to 2.0%, and even more preferably 1.0 to 1.5%.

Next, the present invention will be described in more detail by way of examples, but the present invention is not limited to this example.

1. 1. Measurement and Evaluation The following measurements and evaluations were performed on the printed matter produced in Examples and Comparative Examples and the printed matter of Reference Examples. The results are shown in Table 1 or Table 2.

1-1. Surface shape Cut-off values for the surface protective layer located on the outermost surface of the printed matter of Examples 1 to 4, the surface protective layer located on the outermost surface of the printed matter of Comparative Example 1, and the base material used in Reference Examples 1 to 4. The arithmetic mean roughness Ra of JIS B0601: 2001, the maximum height Rz of JIS B0601: 2001, and the maximum valley depth Rv of the roughness curve of JIS B0601: 2001 were measured when the value was 2.5 mm. The measurement was performed using the trade name SE-340 manufactured by Kosaka Research Institute Co., Ltd., and the following measurement conditions were used.
[Tactile needle of surface roughness detection part]
Product name SE2555N manufactured by Kosaka Research Institute (tip radius of curvature: 2 μm, apex angle: 90 degrees, material: diamond)
[Measurement conditions of surface roughness measuring instrument]
・ Evaluation length (reference length): 5 times the cutoff value λc ・ Feed speed of stylus: 0.5 mm / s
-Preliminary length: (cutoff value λc) x 2
・ Vertical magnification: 2000 times ・ Horizontal magnification: 10 times

1-2. Mirror glossiness Measuring instruments for the surface protective layer located on the outermost surface of the printed matter of Examples 1 to 4, the surface protective layer located on the outermost surface of the printed matter of Comparative Example 1, and the base material used in Reference Examples 1 to 4. using BYK Gardner Co. micro-TRI-gloss as, JIS Z8741: 1997, it was measured specular glossiness _{G 20} in specular glossiness _{G 60} and 20 degrees at 60 degrees.

1-3. Simple texture The simple texture of printed matter was evaluated with the point that the surface is moderately rough and gives the impression that human hands are not excessively applied. Twenty subjects evaluated and calculated the average score, with 2 points for the texture feeling simple, 1 point for the one that could not be said to be either, and 0 point for the one that did not feel the texture simple. An average score of 1.7 or more is "AA", an average score of 1.4 or more and less than 1.7 is "A", and an average score of 1.0 or more and less than 1.4 is "B". Those with an average score of less than 1.0 were designated as "C".

1-4. High-class feeling 20 subjects evaluated the high-class feeling of printed matter and calculated the average score, with 2 points for those who felt high-class feeling, 1 point for those who could not say either, and 0 points for those who did not feel high-class feeling. .. Those with an average score of 1.4 or more were designated as "A", those with an average score of 1.0 or more and less than 1.4 were designated as "B", and those with an average score of less than 1.0 were designated as "C".

2. 2. Preparation of printed matter [Example 1]
One side (surface shape of the paper base material on the printing surface: Ra2.5 μm, Rz16.8 μm) of the paper base material (basis weight: 270 g / m ² , coated cardboard, manufactured by Nippon Paper Industries, Ltd., trade name: Collaboration Fine W) , Rv10.2 μm), a cream-colored first pattern layer having a thickness of 1 μm was formed by offset printing. Next, a sepia-colored second pattern layer having a thickness of 1 μm was partially formed on the first pattern layer by offset printing. A pattern expressing a natural material (a pattern expressing kraft paper) was formed by the first pattern layer and the second pattern layer. Further, a third pattern layer having a thickness of 1 μm composed of black character information was formed at an arbitrary position by offset printing, and a pattern layer composed of the first pattern layer to the third pattern layer was formed. The inks of the first pattern layer to the third pattern layer were solvent-free, and 100% of the resin components were ionizing radiation curable resin compositions.
Next, on the pattern layer, solvent-free surface protective layer forming ink 1 (manufactured by DIC Graphics, trade name: UV carton ACT OP varnish, tack value at 400 rpm: 5.0, 100% of resin component The ionizing radiation curable resin composition) was applied by offset printing and irradiated with ultraviolet rays to form a surface protective layer having a thickness of 1 μm, and the printed matter of Example 1 was obtained.
The tack value was measured using an incometer (model number: EM-1) manufactured by Toyo Seiki Seisakusho.

[Example 2]
The solvent-free surface protective layer forming ink 1 of Example 1 is used, and the solvent-free surface protective layer forming ink 2 (manufactured by DIC Graphics, trade name: UV carton dry-off foil pressing mat OP varnish, matting agent 5 is used. Printed matter of Example 2 in the same manner as in Example 1 except that the content was changed to 10% by mass, the tack value at a rotation speed of 400 rpm was 4.0, and 100% of the resin component was an ionizing radiation curable resin composition). Got

[Example 3]
A solvent-free surface protective layer forming ink 3 (tack value at a rotation speed of 400 rpm: 3.5, by adding a monomer of an ionizing radiation curable compound to the solvent-free surface protective layer forming ink 1 of Example 1). An ionizing radiation curable resin composition) was prepared with 100% of the resin components. A printed matter of Example 3 was obtained in the same manner as in Example 1 except that the solvent-free surface protective layer forming ink 3 was used as the surface protective layer forming ink.

[Example 4]
An oligomer of an ionizing radiation curable compound was added to the solvent-free surface protective layer forming ink 1 of Example 1, and the solvent-free surface protective layer forming ink 4 (tack value at a rotation speed of 400 rpm: 6.5, An ionizing radiation curable resin composition) was prepared with 100% of the resin components. A printed matter of Example 4 was obtained in the same manner as in Example 1 except that the solvent-free surface protective layer forming ink 4 was used as the surface protective layer forming ink.

[Comparative Example 1]
The solvent-free surface protective layer forming ink 1 of Example 1 is used as the solvent-free surface protective layer forming ink 5 (manufactured by DIC Graphics, UV Clear EX 1085 coat varnish, tack value at a rotation speed of 400 rpm: unmeasurable, A printed matter of Comparative Example 1 was obtained in the same manner as in Example 1 except that 100% of the resin component was changed to an ionizing radiation curable resin composition). The fact that the tack value of the surface protective layer forming ink 5 at a rotation speed of 400 rpm cannot be measured means that the viscosity of the surface protective layer forming ink 5 is weak.

[Reference example 1]
A third pattern layer similar to that of Example 1 is formed on a commercially available kraft paper (manufactured by Rengo Co., Ltd., trade name: CRKKH, basis weight: 370 g / m ² ) to obtain a printed matter of Reference Example 1. It was.

[Reference example 2]
A third pattern layer similar to that of Example 1 is formed on a commercially available kraft paper (manufactured by Clearwater, trade name: CKB, basis weight: 290 g / m ² ), and the printed matter of Reference Example 2 is formed. Obtained.

[Reference example 3]
A third pattern layer similar to that of Example 1 was formed at an arbitrary position on the same paper substrate as that of Example 1, and a printed matter of Reference Example 3 was obtained.

[Reference example 4]
A third pattern layer similar to that of Example 1 is formed at an arbitrary location on a commercially available coated paper (manufactured by Nippon Paper Industries, Ltd., trade name: JET Ace W, basis weight: 260 g / m ² ), and the third pattern layer similar to that of Example 1 is formed. I got a printed matter.

From the results in Table 1, it can be confirmed that the printed matter of Examples 1 to 4 satisfying the conditions 1-1, 1-2 and 2-1 can impart contradictory textures such as a simple texture and a high-class feeling.

The printed matter and container of the present invention can impart contradictory textures such as a simple texture and a high-class feeling, and are useful in that they are extremely excellent in design. Further, the method for selecting printed matter of the present invention is useful in that it is possible to accurately select a printed matter having both a simple texture and a high-class feeling.

10: Base material 20: Picture layer 21: First picture layer 22: Second picture layer 23: Third picture layer 30: Surface protection layer 40: Metallic luster layer 100: Printed matter

Claims (7)

A printed matter having a pattern layer at an arbitrary position on a base material, the printed matter has a surface protective layer at an arbitrary place on the side of the base material having the pattern layer, and the surface protective layer is ionized. A printed matter containing a cured product of a thermosetting resin composition, wherein the surface protective layer located on the outermost surface of the printed matter among the surface protective layers satisfies the following conditions 1-1, 1-2 and 2-1.
<Condition 1-1>
The arithmetic mean roughness Ra of JIS B0601: 2001 when the cutoff is 2.5 mm is 1.5 to 3.0 μm.
<Condition 1-2>
The maximum height Rz of JIS B0601: 2001 when the cutoff is 2.5 mm is 10.0 to 18.0 μm.
<Condition 2-1>
JIS Z8741: 1997 of the specular gloss _{G 60} at 60 degrees, the ratio _[G 60 _{/ G 20]} the specular gloss _{G 20} at 20 °, 4.5 to 8.0. The printed matter according to claim 1, wherein the surface protective layer located on the outermost surface of the printed matter further satisfies the following conditions 1-3.
<Condition 1-3>
The maximum valley depth Rv of the roughness curve of JIS B0601: 2001 when the cutoff is 2.5 mm is 6.0 to 15.0 μm. The printed matter according to claim 1 or 2, wherein the surface protective layer located on the outermost surface of the printed matter further satisfies the following conditions 2-2 and / or conditions 2-3.
<Condition 2-2>
The G ₆₀ is 6.0 to 15.0%.
<Condition 2-3>
The G ₂₀ is 0.5 to 3.0%. The printed matter according to any one of claims 1 to 3, which has a metallic luster layer at an arbitrary position on the surface protective layer. The printed matter according to any one of claims 1 to 4 , wherein the base material is paper. A container made of the printed matter according to any one of claims 1 to 5 . As a printed matter having a pattern layer at an arbitrary position on the substrate and a surface protective layer containing a cured product of the ionizing radiation curable resin composition at an arbitrary position on the side of the substrate having the pattern layer. Selection of printed matter by determining whether or not the surface protective layer located on the outermost surface of the printed matter among the surface protective layers satisfies the following conditions 1-1, 1-2 and 2-1 and selecting those satisfying the conditions. Method.
<Condition 1-1>
The arithmetic mean roughness Ra of JIS B0601: 2001 when the cutoff is 2.5 mm is 1.5 to 3.0 μm.
<Condition 1-2>
The maximum height Rz of JIS B0601: 2001 when the cutoff is 2.5 mm is 10.0 to 18.0 μm.
<Condition 2-1>
JIS Z8741: 1997 of the specular gloss _{G 60} at 60 degrees, the ratio _[G 60 _{/ G 20]} the specular gloss _{G 20} at 20 °, 4.5 to 8.0.