JP6610229B2 - Printed matter and container using the printed matter - Google Patents

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.

For example, Patent Document 1 discloses a paper container in which a printed layer having a metallic gloss region layer including a binder resin and metal thin film strips is formed on a paper base material.
Although the paper container of Patent Document 1 has a certain level of metallic luster, the paper container imparts metallic luster by printing and thus does not have a high level of metallic luster. Here, the “metallic luster” that expresses the metallic luster is represented by the degree of sudden change in reflection intensity depending on the viewing angle.

  On the other hand, in order to give a high level of metallic luster, a transfer foil having a metal vapor deposition film formed on a substrate is used, and means for transferring the metal vapor deposition film from the transfer foil onto the printed material (so-called “foil pressing”) is also provided. It has been broken.

JP 2003-2322 A

Since foil stamping uses a metal vapor deposition film, a high level of metallic luster can be imparted.
However, since the metal vapor deposition film formed by foil stamping completely hides the underlying pattern, the underlying pattern (printing layer) and the metal vapor deposition film are independent of each other, and the design can be sufficiently enhanced. There wasn't.

  An object of the present invention is to provide a printed matter and a container that have a good metallic luster contrast and are excellent in design.

In order to solve the above-mentioned problems, the present inventors first examined a light-transmitting metal film used in a half mirror or the like. When a light-transmitting metal film is transferred onto the printed material, it is possible to see the underlying printing through the metal film, and the design is improved. However, when the contrast of the metallic luster of the printed material is not good, the design properties are not sufficient.
As a result of further diligent research, the inventors have improved the contrast of the metallic luster of the printed matter by providing a part of the adjustment layer to adjust the roughness of the surface of the metal film, and sufficiently exhibit the design. As a result, the present invention has been completed.

That is, the present invention provides the following printed materials and containers [1] to [5].
[1] A base material, a printed layer provided on the base material, a metal film provided on the printed layer and having a total light transmittance of 20 to 80% according to JIS K7361-1: 1997, An adjustment layer that adjusts the roughness of the surface of the metal film between the substrate and the print layer, or between the print layer and the metal film, wherein the metal film exists, A metal gloss adjustment area that is an area where the adjustment layer is present; an area where the metal film is present; and a metal gloss non-adjustment area where the adjustment layer is not present; the metal gloss adjustment area And a printed matter in which at least one set of the metallic luster non-adjustment region is adjacent.
[2] The printed material according to [1], wherein the surface of the base material has a maximum peak height Rp of a roughness curve of JIS B0601: 2001 having a cutoff value of 0.8 mm of 10.0 μm or less.
[3] The printed material according to [1] or [2], wherein a pattern is formed by the metal film.
[4] The printed matter according to any one of [1] to [3], wherein the substrate is a paper substrate.
[5] A container produced using the printed material according to any one of [1] to [4].

  The printed material and the container of the present invention can be visually recognized through the metal film, and have excellent design properties due to the good contrast of the metallic gloss of the printed material.

It is sectional drawing (the 1) of the printed matter which concerns on the 1st Embodiment of this invention. It is sectional drawing (the 2) of the printed matter which concerns on the 1st Embodiment of this invention. It is sectional drawing (the 1) of the printed matter which concerns on the 2nd Embodiment of this invention. It is sectional drawing (the 2) of the printed matter which concerns on the 2nd Embodiment of this invention.

[Printed matter]
The printed matter of the present invention includes a base material, a printed layer provided on the base material, a metal film provided on the printed layer and having a total light transmittance of 20 to 80% according to JIS K7361-1: 1997, An adjustment layer that is provided between a base material and a printed layer or between a printed layer and a metal film and that adjusts the roughness of the surface of the metal film; It has a metal gloss adjustment area where the adjustment layer exists, has a metal gloss adjustment area where there is a metal film and does not have an adjustment layer, and has a metal gloss adjustment area and a metal gloss. At least one pair with the non-adjustment region is adjacent.
Hereinafter, embodiments of the printed matter of the present invention will be described.

1 and 2 are cross-sectional views of printed materials 100a and 100b according to the first embodiment of the present invention. The printed matter 100a, 100b shown in FIGS. 1 and 2 has printed layers 21, 22, on a substrate 10 having a surface with an arithmetic average roughness Ra of less than 1.0 μm according to JIS B0601: 2001 having a cutoff value of 0.8 mm. 23, 24, 25 and the metal film 40 are provided in this order. In the printed material 100a in FIG. 1, an adjustment layer 50 is provided between the substrate 10 and the printing layers 22 and 24. In the printed material 100 b in FIG. 2, an adjustment layer 50 is provided between the printed layers 21, 22, 23, 24 and the metal film 40. Moreover, the printed matter 100a, 100b of FIG.1 and FIG.2 has the adhesive bond layer 30 between the printing layer and the metal film.
3 and 4 are cross-sectional views of the printed materials 100c and 100d according to the second embodiment of the present invention. The printed materials 100c and 100d shown in FIGS. 3 and 4 are printed on the base material 10 having a surface with an arithmetic average roughness Ra of 1.0 to 5.0 μm according to JIS B0601: 2001 having a cutoff value of 0.8 mm. , 22, 23, 24, 25 and the metal film 40 in this order. In the printed material 100c of FIG. 3, an adjustment layer 50 is provided between the base material 10 and the printing layers 22 and 24. In the printed material 100d in FIG. 4, an adjustment layer 50 is provided between the printed layers 21, 22, 23, 24 and the metal film 40. 3 and FIG. 4 has an adhesive layer 30 between the printed layer and the metal film.
The printed materials 100a to 100d in FIGS. 1 to 4 have a print layer on a part of the base material 10, but may have a print layer on the entire surface of the base material. 1 to 4 have the metal film 40 only on the print layer, the prints 100a to 100d may have the metal film 40 at a location not having the print layer. In the case where the metal film 40 is provided at a place where the print layer is not provided, the pattern can be formed by the metal film 40.

In the present invention, the term "adjacent", as shown in FIGS. 1 to 4, the shortest distance between the metallic gloss adjusting region D ₁ and a metallic brilliance adjustment region D ₂ is assumed to refer the case within 1 cm. That is, “adjacent” includes not only the case where the metallic gloss adjustment region D ₁ and the metallic gloss non-adjustment region D ₂ are in contact with each other, but also the metallic gloss adjustment region D ₁ and the metallic gloss non-adjustment region D _2. It also includes the case where they are separated (however, when they are separated, the shortest distance between adjacent regions is within 1 cm).

Adjustment layer The printed matter of the present invention has an adjustment layer intended to adjust the roughness of the surface of the metal film between the substrate and the print layer, or between the print layer and the metal film. .
It is preferable that the adjustment layer is disposed between the base material and the printing layer or a part between the printing layer and the metal film to adjust the roughness of the surface of the part of the metal film. By arranging the adjustment layer in part and changing the roughness unevenness level of the surface of some metal films, the contrast of the metallic luster feeling at the desired location is adjusted and the contrast of the metallic luster feeling is obtained in the plane. It becomes possible, and design property can be improved.
Specifically, by increasing the roughness level of the roughness of the metal film surface, the reflected light in the regular reflection direction is reduced and the metallic gloss is lowered. On the other hand, when the roughness level of the roughness of the metal film surface is lowered, the reflected light in the regular reflection direction increases, and the metallic gloss is improved. In this way, by adjusting the roughness level of the roughness of the surface of the metal film and controlling the metallic luster by the adjustment layer, the contrast of the metallic luster can be obtained.
When the reflectance on the surface of the metal film is compared with the reflectance on the surface of the adjustment layer, the reflectance on the surface of the metal film is much higher. For this reason, even if the adjustment layer is provided above the metal film, it does not lead to the adjustment of the contrast of the metallic luster, and it is important to provide the adjustment layer at the position of the embodiment of the present invention.

  An adjustment layer has the adjustment layer which provides the roughness of the metal film surface, and the adjustment layer which smoothes the roughness of the metal film surface. The adjustment layer for imparting the roughness of the metal film surface is a layer for imparting the roughness to the surface of the metal film directly or via the printed layer, and can increase the roughness level of the roughness of the metal film surface. it can. The adjustment layer that smoothes the roughness of the surface of the metal film is a layer that smoothes the roughness of the surface of the metal film through the printing layer or directly, and reduces the roughness level of the roughness of the surface of the metal film. be able to.

In the printed matter according to the first embodiment of the present invention, since the Ra of the substrate surface is less than 1.0 μm and the surface is moderately smooth, an adjustment layer that imparts the roughness of the metal film surface is desired. By arranging in this position, it becomes possible to adjust the contrast of the metallic luster in the place where the adjustment layer is placed and the place where the adjustment layer is not placed, and the design can be improved.
From the above viewpoint, the adjustment layer in the printed matter according to the first embodiment of the present invention has an arithmetic average roughness Ra ₁ of JIS B0601: 2001 with a cut-off value of 0.8 mm on the adjustment layer surface on the metal film side. The thickness is preferably 0 to 5.0 μm, more preferably 1.1 to 4.9 μm, and still more preferably 1.2 to 4.8 μm.

In the printed matter according to the second embodiment of the present invention, Ra on the surface of the base material is 1.0 to 5.0 μm, and since the surface has appropriate irregularities, the surface roughness of the metal film is smoothed. By disposing the adjustment layer at a desired position, it is possible to adjust the contrast of the metallic luster feeling between the place where the adjustment layer is placed and the place where the adjustment layer is not placed, and the design can be improved.
From the above viewpoint, the adjustment layer in the printed matter according to the second embodiment of the present invention has an arithmetic average roughness Ra ₂ of JIS B0601: 2001 with a cut-off value of 0.8 mm on the adjustment layer surface on the metal film side. The thickness is preferably less than 0 μm, more preferably 0.3 to 0.9 μm, and still more preferably 0.4 to 0.8 μm.

  As a method of adjusting the surface roughness of the adjustment layer, fine unevenness caused by the filler is obtained by using an ink for the adjustment layer containing a filler in a transparent resin that is cured by either ionizing radiation, heat, or a combination thereof. Examples thereof include a method of forming and roughening, and a method of forming the surface shape of the substrate by transferring the shape of the shapeable film using the shapeable film.

As the adjustment layer ink used for the formation of the adjustment layer, the resin component is the main component, and if necessary, colorants such as pigments and dyes, particles, solvents, stabilizers, plasticizers, catalysts, curing agents, and the like as appropriate. A mixture is used.
There is no restriction | limiting in particular as a resin component, For example, a thermosetting resin composition, an ionizing radiation curable resin, etc. are mentioned.
In addition, drying is unnecessary when the solvent is not contained in the ink for adjustment layers.
The adjustment layer may contain additives such as an antioxidant and an ultraviolet absorber as long as the effects of the present invention are not impaired.

Examples of the thermosetting resin composition include epoxy resins, phenol resins, urea resins, unsaturated polyester resins, melamine resins, alkyd resins, polyimide resins, silicone resins, hydroxyl functional acrylic resins, carboxyl functional acrylic resins, amides. A functional copolymer, a urethane resin, etc. can be mentioned, These can be used 1 type or in combination of 2 or more types.
As an aspect of the cross-linking curing of the thermosetting resin composition, for example, the epoxy resin can promote the cross-linking curing by reaction with amine, acid catalyst, carboxylic acid, acid anhydride, hydroxyl group, dicyandiamide or ketimine; Reaction of a base catalyst with excess aldehyde can promote cross-linking cure; urea resins can promote cross-linking cure by polycondensation reaction under alkaline or acidic conditions; unsaturated polyester resins can contain maleic anhydride and diol The melamine resin can promote cross-linking and curing by heating polycondensation reaction of methylol melamine; the alkyd resin can react by air oxidation of unsaturated groups introduced into side chains and the like. Cross-linking cure can be promoted; polyimide resins can be reacted by reaction in the presence of acids or weak alkali catalysts or Crosslinking and curing can be promoted by reaction with a compound (in the case of a two-component type); the silicone resin can promote crosslinking and curing by a condensation reaction in the presence of an acid catalyst of a silanol group; Crosslink curing can be promoted by the reaction with the amino resin it has (in the case of one-pack type); carboxyl functional acrylic resin can promote crosslink cure by reaction with carboxylic acid such as acrylic acid or methacrylic acid and an epoxy compound. An amide functional copolymer can promote cross-linking and curing by reaction with a hydroxyl group or a self-condensation reaction; a urethane resin can be a hydroxyl group-containing polyester resin, polyether resin, acrylic resin or the like and an isocyanate compound or a modification thereof; Crosslinking and curing can be accelerated by reaction with the product. In the thermosetting resin composition, a crosslinking agent or a curing agent using these reactions is usually used.

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, the monomer is preferable from the viewpoint of improving the penetration preventing property due to the 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, benzylmethyl 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.
The ionizing radiation curable resin composition may contain a resin component (thermoplastic resin or thermosetting resin) other than the ionizing radiation curable compound. However, in order to easily achieve the effect described above, the proportion of the ionizing radiation curable compound in the total resin components of the ionizing radiation curable resin composition is preferably 90% by mass or more, and 95% by mass or more. It is more preferable that the content is 100% by mass.

Formation of the coating film by coating the adjustment layer is performed by applying an adjustment layer forming coating solution containing a resin component and particles by a known application method such as gravure coating or bar coating, and drying and curing as necessary. Can be formed. It is preferable that the adjustment layer forming coating solution contains organic particles or inorganic particles for easily adjusting the roughness of the adjustment layer surface on the metal film side of the adjustment layer.
Examples of the organic particles include particles made of polymethyl methacrylate, polyacryl-styrene copolymer, melamine resin, polycarbonate, polystyrene, polyvinyl chloride, benzoguanamine-melamine-formaldehyde condensate, silicone, fluorine resin, and polyester resin. Can be mentioned.
Examples of the inorganic particles include particles made of silica, alumina, zirconia, titania and the like.
The average particle diameter of the organic particles or inorganic particles is preferably 0.5 to 10 μm, more preferably 1 to 9 μm, and further preferably 1.5 to 8 μm. When the average particle diameter is within the above range, the unevenness level on the surface of the metal film can be adjusted. Here, the average particle size is a volume-based particle size measured by laser diffraction type or laser scattering type particle size distribution measurement.
The addition amount of organic particles or inorganic particles is usually about 1 to 50 parts by mass with respect to 100 parts by mass of the composition forming the adjustment layer.

From the viewpoint of adjusting the roughness of the metal film surface, the adjustment layer preferably has a thickness of 1 μm or more. When the adjustment layer is too thick, the workability deteriorates. Therefore, the thickness of the adjustment layer is more preferably 1 to 20 μm, further preferably 2 to 10 μm, and more preferably 3 to 7 μm. Even more preferred.
The thickness of the adjustment layer when the adjustment layer has irregularities on the surface refers to the thickness from the lower surface to the surface formed by the convex portions.

A metal film printing layer is formed in a part on a printing layer for the purpose of improving the designability of printed matter. 1-4 has the metal film 40 on the printing layers 21-24 among the printing layers 21-25. Moreover, the printed matter of FIGS. 1-4 has the adhesive bond layer 30 in order to improve the adhesiveness of a metal film between the metal film 40 and a printing layer, or between the metal film 40 and the adjustment layer 50. ing.
The metal film may be formed at a location that does not have a printed layer. Moreover, you may form a pattern with a metal film.

In the printed matter of FIGS. 1 and 3, the adjustment layer 50 exists between the substrate 10 and the print layers 22 and 24, and the region where the metal film 40 exists on the upper layers of the print layers 22 and 24 is an area. a metallic gloss adjusting region _{D 1.} On the other hand, in the printed matter of FIGS. 1 and 3, the metal film 40 is present on the upper layers of the print layers 21 and 23, but the region where the adjustment layer 50 is not present is the metallic luster non-adjustment region D ₂ .
In the printed matter of FIGS. 2 and 4, the adjustment layer 50 exists between the print layers 22 and 24 and the metal film 50, and the region where the metal film 40 exists on the adjustment layer 50 is a metallic luster. an adjustment region _{D 1.} On the other hand, in the printed matter of FIGS. 2 and 4, the metal film 40 exists on the upper layers of the print layers 21 and 23, but the region where the adjustment layer 50 does not exist is the metallic luster non-adjustment region D ₂ .
Printed material of the present invention, the metallic gloss adjusting region D _1, it is possible to vary the adjustment layer 50 uneven level of roughness of the surface of the metal film, the metal gloss adjusting region D ₁ and a metallic brilliance adjustment region D ₂ The contrast of the metallic luster feeling can be improved.

JIS B0601: 2001 arithmetic mean roughness Ra _D1 with a cut-off value of 0.8 mm on the metal film surface in the metallic gloss adjustment area D ₁ , and a cut-off value of 0.8 mm on the metal film surface in the metal gloss non-adjustment area D ₂ In the case of the arithmetic average roughness Ra _D2 of JIS B0601: 2001, | Ra _D1 −Ra _D2 |, which is the difference in the roughness of the metal film surface between the metallic luster adjustment region D ₁ and the metallic luster non-adjustment region D ₂ , From the viewpoint of improving the contrast of the metallic luster, the thickness is preferably 0.3 μm or more, more preferably 0.5 to 1.0 μm, and still more preferably 0.6 to 0.8 μm.

In the present invention, a metal film having a total light transmittance of 20 to 80% according to JIS K7361-1: 1997 is used as the metal film.
When the total light transmittance of the metal film is less than 20%, it becomes difficult to see through the pattern of the printed layer, and the design property cannot be improved. Moreover, when the total light transmittance of a metal film exceeds 80%, the reflectance of a metal film will fall and metal glossiness will fall.
The total light transmittance of the metal film is preferably 30 to 60%, more preferably 40 to 55%, and still more preferably 45 to 50%.
In addition, in this invention, let the total light transmittance of a metal film be an average value at the time of measuring total light transmittance in 20 places of the following sample.
(sample)
A metal film is formed on soda-lime glass (refractive index 1.51) having a thickness of 1 mm via an adhesive layer (refractive index 1.51) having a thickness of 1.5 μm.

  A metal film having a total light transmittance of 20 to 80% is thin because it has light transmittance. And even if there is slight thickness unevenness, a metal film with a small thickness tends to cause unevenness in the metallic luster due to the thickness unevenness. For this reason, it is preferable to use a substrate having an Ra of 0.3 μm or more to eliminate unevenness of the metallic luster.

  The thickness unevenness described above can be expressed by, for example, the standard deviation of the total light transmittance of the metal film. Specifically, the standard deviation of the total light transmittance of JIS K7361-1: 1997 at any 20 locations of a metal film having a total light transmittance of 20 to 80% is usually about 0.02 to 0.10%. is there.

  The metal film is formed of one or more metals such as aluminum, silver, gold, nickel, copper, and chromium. Among these, aluminum, silver, and nickel having a small color are preferable, and aluminum is more preferable.

The metal film can be formed, for example, by transferring the metal film of the transfer foil onto the printing layer.
Transfer foil consists of a structure which has a mold release layer, a metal film, and an adhesive bond layer on a base film, for example.
A general-purpose plastic film can be used as the base film. The thickness of the base film is about 5 to 30 μm.

The release layer may remain on the base film at the time of transfer, or may be transferred to the printed material side together with the metal film and the adhesive layer.
The release layer remaining on the base film at the time of transfer exhibits only a release effect and can be formed from a general-purpose release agent such as a silicone release agent or an olefin release agent.
The release layer transferred to the printed material side at the time of transfer is located on the metal film after the transfer, and has a function as a protective layer for protecting the metal film. The release layer (protective layer) having such a protective function is preferably a cured product of a curable resin or a metal oxide film. As the curable resin, a general-purpose thermosetting resin or ionizing radiation curable resin can be used. Examples of the metal oxide film include transparent metal oxide films such as silica and alumina.
Since the thickness of the release layer varies depending on the type of the release layer, it cannot be said unconditionally. In the case of the release layer remaining on the base film at the time of transfer, the thickness is not particularly limited, but is usually about 0.1 to 1.0 μm. In the case of a release layer (protective layer) transferred to the printed material side at the time of transfer, from the viewpoint of protecting the metal film and maintaining the roughness of the metal film surface also on the release layer (protective layer), 0.02 It is preferable that it is -1.0 micrometer, and it is more preferable that it is 0.03-0.5 micrometer.

  The adhesive foil of the transfer foil has the same configuration as the adhesive layer described above. When the adhesive constituting the adhesive layer is a hot melt adhesive, the metal film or the like can be transferred by a thermal transfer method. When the adhesive constituting the adhesive layer is a pressure sensitive adhesive, the metal film or the like can be transferred by a cold transfer method.

  On the metal film, you may have functional layers, such as a colored layer, in the range which does not inhibit the effect of this invention.

As the substrate of the printed material according to the first embodiment of the substrate, it is preferable to use a substrate surface having an arithmetic average roughness Ra of JIS B0601: 2001 with a cutoff value of 0.8 mm of less than 1.0 μm. . By making Ra of the substrate surface less than 1.0 μm, it is possible to suppress diffusion and suppress a decrease in resolution of printed matter. As for Ra of the base-material surface of the printed matter concerning 1st Embodiment, it is more preferable that it is 0.3-0.9 micrometer, and it is further more preferable that it is 0.4-0.8 micrometer.

  As a base material of the printed matter according to the second embodiment, a base material having an arithmetic average roughness Ra of 1.0 to 5.0 μm according to JIS B0601: 2001 having a cutoff value of 0.8 mm is used. preferable. By setting the Ra of the substrate surface to 1.0 to 5.0 μm, the roughness of the metal film surface is reflected on the surface of the metal film through the printed layer, the metal film surface is appropriately uneven, and the metallic luster Unevenness of feeling can be eliminated. The Ra of the substrate surface of the printed material according to the second embodiment is more preferably 1.1 to 4.9 μm, and further preferably 1.2 to 4.8 μm.

The material of the base material is, for example, high-quality paper, medium-quality paper, coated paper, synthetic paper, impregnated paper, laminated paper, printing coated paper, paper for recording, etc., polyethylene terephthalate film, polyethylene film, polypropylene film, A plastic film such as a polycarbonate film, or a composite of these is used.
The substrate may have a surface Ra adjusted to the above range by subjecting a substrate such as paper, plastic film, or a composite thereof to physical or chemical treatment such as sandblasting or chemical etching. . In addition, the substrate may be a substrate whose surface Ra is adjusted to the above range by forming a primer layer on a substrate such as paper, plastic film or a composite thereof.
It is also conceivable to make the surface of the metal film uneven by using a smooth base material as a base material and adding a matting agent to the ink forming the print layer. However, in this configuration, the unevenness formed by the matting agent may be reflected in the metal film without being sufficiently relaxed, and as a result, the surface of the metal film is excessively uneven, and the metallic luster is lowered. Or the unevenness is too conspicuous.

As for the surface of a base material, it is preferable that the maximum peak height Rp of the roughness curve of JIS B0601: 2001 with a cutoff value of 0.8 mm is 10.0 micrometers or less, It is more preferable that it is 8.0 micrometers or less. More preferably, it is 0-7.0 micrometers.
That the Rp of the substrate surface is 10.0 μm or less means that there is no extremely high convex portion on the substrate surface and the roughness of the metal film surface is averaged. For this reason, by setting the Rp of the substrate surface to 10.0 μm or less, it is possible to more easily eliminate the unevenness of the metallic gloss.

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

Print layer A print layer is formed in a part on a substrate for the purpose of improving the design nature of printed matter.
The printing layer can be formed by multicolor printing by process colors such as normal yellow, red, blue, and black, or by multicolor printing by special colors prepared by preparing individual color plates constituting a printing pattern. Can be formed.
The pattern of the printing layer can be used without particular limitation as long as it is a pattern (for example, characters, numbers, figures, symbols, landscapes, people, animals, characters, etc.) used in normal printing.

As the ink used for forming the printing layer, an ink obtained by appropriately mixing a resin component with a colorant such as a pigment or a dye, particles, a solvent, a stabilizer, a plasticizer, a catalyst, a curing agent, or the like is used.
The resin component is not particularly limited, and examples thereof include acrylic resins, styrene resins, polyester resins, urethane resins, chlorinated polyolefin resins, vinyl chloride-vinyl acetate copolymer resins, polyvinyl butyral resins, and alkyd resins. Examples include resins, 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 combination of two or more.
The printed 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 printing layer is preferably from 0.5 to 10.0 μm, and preferably from 0.7 to 5.0 μm, from the viewpoint of concealing the color tone of the substrate and moderately unevenness of the substrate surface. It is more preferable.
The printing layer forming means may be appropriately selected from printing means such as offset printing, ink jet printing, gravure printing and the like according to the embodiment.

In order to improve the adhesion of the metal film, it is preferable to have an adhesive layer between the adhesive layer printed layer and the metal film or between the adjustment layer and the metal film.
Examples of the adhesive constituting the adhesive layer include general-purpose hot-melt adhesives (heat-sensitive adhesives), pressure-sensitive adhesives, and curable adhesives. The adhesive layer is preferably formed from a highly transparent resin.

The thickness of the adhesive layer is preferably 0.5 to 3.0 μm from the viewpoint of improving the adhesion of the metal film and reflecting the roughness of the metal film surface to the metal film appropriately. It is more preferable that it is 0-2.5 micrometers.
The adhesive layer can be formed by, for example, transferring onto the printing layer using a transfer foil described later.

An intermediate layer may be provided between the intermediate layer printed layer and the metal film or between the printed layer and the adhesive layer for the purpose of improving the adhesion of the metal film. The intermediate layer is preferably formed from a highly transparent resin.

[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 beverage container, a food container, and a chemical container. The container according to the present invention can be visually recognized through the metal film, has no unevenness in the metallic luster, and has a high metallic luster, so that the design is extremely excellent.

  EXAMPLES Next, although an Example demonstrates this invention further in detail, this invention is not limited at all by this example. In the following, “part” means mass basis unless otherwise specified.

1. Measurement and Evaluation The following measurements and evaluations were performed on the printed materials and the intermediate materials produced in the experimental examples. The results are shown in Tables 1 to 4.

1-1. Arithmetic mean roughness Ra
The arithmetic average roughness Ra and the maximum peak height Rp of the roughness curve of JIS B0601: 2001 with a cut-off value of 0.8 mm were measured for the printed materials of the experimental examples. For measurement, trade name SE-340 manufactured by Kosaka Laboratory Ltd. was used, and the following measurement conditions were used.
[Surface probe for surface roughness detection]
Trade name SJ-210 manufactured by Mitutoyo Corporation (tip radius of curvature: 2 μm, apex angle: 60 degrees, material: diamond)
[Measurement conditions of surface roughness measuring instrument]
・ Evaluation length (reference length): 5 times the cutoff value λc ・ Feeding speed of stylus: 0.25 mm / s
・ Preliminary length: (cutoff value λc) × 2

1-2. Total light transmittance According to the description of the specification, samples are prepared from the following transfer foils A to M, and the total light transmittance (JIS K7361-1: 1997) of the metal films A to M is measured. The standard deviation of the total light transmittance of ~ M was calculated. The light incident surface was the soda-lime glass side of the sample.
The total light transmittance was measured with “Haze Meter HM-150” of Murakami Color Research Laboratory Co., Ltd.

1-3. Contrast of metallic glossiness When comparing region X and region Y visually, two points with very clear contrast of metallic glossiness, one point with clear contrast of metallic glossiness, Twenty subjects evaluated the score that was difficult to distinguish contrast as 0 points, and the average score was calculated. “AA” having an average score of 1.7 or more, “A” having an average score of 1.4 or more and less than 1.7, “B” having an average score of 1.0 or more and less than 1.4, A sample having an average score of less than 1.0 was designated as “C”.
In the printed materials of Comparative Examples 1 to 9, a part of the region (for example, the left half region of the printed material) is regarded as the region X, and a region adjacent to the region X (for example, the right half region of the printed material) is defined as the region Y. I saw it.

1-4. Resolution Even if carefully observed, the edge of the pattern on the underlying printed layer does not feel blurred through the metal film, and when you carefully observe two points where the edge of the pattern can be seen very clearly, the substrate prints through the metal film. The edge of the pattern of the layer is slightly blurred, but one point that can clearly see the edge of the pattern, even when observed normally without paying attention, the pattern of the underlying printed layer through the metal film Twenty subjects evaluated and averaged the points where the edges were felt blurred and it was difficult to clearly see the edges of the pattern as 0 points. “AA” having an average score of 1.7 or more, “A” having an average score of 1.4 or more and less than 1.7, “B” having an average score of 1.0 or more and less than 1.4, A sample having an average score of less than 1.0 was designated as “C”.

1-5. Underlying visibility Two points where the printed layer of the underlying layer can be seen without feeling darkness through the metal film, one point where the printing of the underlying layer feels somewhat dark through the metallic film but can be seen, one point, the metallic film Through the test, 20 subjects evaluated the average printed score of 0, which was difficult to visually recognize because the underlying printed layer was dark. “AA” having an average score of 1.7 or more, “A” having an average score of 1.4 or more and less than 1.7, “B” having an average score of 1.0 or more and less than 1.4, A sample having an average score of less than 1.0 was designated as “C”.

2. Production of Intermediate Material (Transfer Foil) A release layer made of an olefin resin having a thickness of 0.3 μm was formed on one surface of a transparent polyethylene terephthalate film having a thickness of 12 μm. Next, a metal film A made of aluminum was formed on the release layer by vacuum deposition. Next, a hot-melt adhesive layer (acrylic resin, refractive index 1.51) was formed on the metal film, and transfer foil A was formed. Also, transfer foils B to M were obtained in the same manner as the transfer foil A, except that the time of vacuum deposition was changed.

3. Preparation of paper substrate White coated papers A to C and white uncoated papers D to I having different Ra on the substrate surface were prepared as a substrate (basis weight about 270 g / m ² ).

Table 1 shows Ra and Rp of the substrates A to I. Table 2 shows the total light transmittance of the metal films A to M and the standard deviation of the total light transmittance.

4). Production of printed matter [Example 1]
On the base material A, a printing layer having a thickness of 1 μm was formed by offset printing using black ink. Subsequently, the adjustment layer ink having the following formulation was applied and heated so that the thickness after drying was 2.0 μm, thereby forming an adjustment layer. The adjustment layer used was a separately formed shaping film, and formed a surface shape having desired irregularities by transferring the shape of the shaping film. The formed adjustment layer is an adjustment layer that gives the roughness of the surface of the metal film, and the arithmetic average roughness Ra of JIS B0601: 2001 with a cut-off value of 0.8 mm on the adjustment layer surface on the metal film side is 1.0 μm. did. Next, an adhesive was applied so that the thickness of the acrylic adhesive was 1.0 μm so as to cover a part of the printed layer, and an adjustment layer formed on the adhesive was disposed. Next, the adhesive layer and the metal film G of the transfer foil G are transferred by thermal transfer onto at least one pair of adjacent regions of the region where the adjustment layer is present and the region where the adjustment layer is not present. The printed matter of Example 1 in which at least one set with the non-adjustment region is adjacent was obtained.
In the printed matter of Example 1, the metal gloss adjustment region is the region X, and the metal gloss non-adjustment region is the region Y. | Ra _D1 −Ra _D2 |, which is the difference in roughness between the surface of the metal film in region X and region Y, was 0.7 μm.

<Ink for adjustment layer>
・ Acrylic polyol (Acridic A-807 <solid content 50%>: Dainippon Ink & Chemicals, Inc.), 162 parts ・ Isocyanate (Takenate D110N <solid content 60%>: Takeda Pharmaceutical Co., Ltd.), 32 parts ・ Butyl acetate 215 / Methyl ethyl ketone 215 parts

[Examples 2-3]
A printed material was obtained in the same manner as in Example 1 except that the base material was changed to the base material shown in Table 3 and the difference in the roughness of the metal film surface in region X and region Y was changed.

[Example 4]
A printed layer having a thickness of 1.0 μm was formed on the substrate D by offset printing using black ink. Next, the adjustment layer ink having the above-mentioned formulation was applied and heated so that the thickness after drying was 1.0 μm to form an adjustment layer. The formed adjustment layer is an adjustment layer that smoothes the roughness of the metal film surface, and the arithmetic average roughness Ra of JIS B0601: 2001 with a cut-off value of 0.8 mm on the adjustment layer surface on the metal film side is 0.4 μm. It was. Next, an adhesive was applied so that the thickness of the acrylic adhesive was 1.0 μm so as to cover a part of the printed layer, and an adjustment layer formed on the adhesive was disposed. Next, the adhesive layer and the metal film G of the transfer foil G are transferred by thermal transfer onto at least one pair of adjacent regions of the region where the adjustment layer is present and the region where the adjustment layer is not present. The printed matter of Example 4 in which at least one set with the non-adjustment region was adjacent was obtained.
In the printed matter of Example 4, the metal gloss adjustment region is the region X, and the metal gloss non-adjustment region is the region Y. | Ra _D1 −Ra _D2 |, which is the difference in roughness between the surface of the metal film in region X and region Y, was 0.7 μm.

[Examples 5 to 9]
A printed material was obtained in the same manner as in Example 4 except that the substrate was changed to the substrate shown in Table 3 and the difference in the roughness of the metal film surface in region X and region Y was changed.

[Comparative Example 1]
On the base material A, a printing layer having a thickness of 1 μm was formed by offset printing using black ink. Next, the adhesive layer of the transfer foil G and the metal film G were transferred onto the printed layer by thermal transfer, and the printed matter of Comparative Example 1 was obtained.

[Comparative Examples 2 to 9]
A printed matter was obtained in the same manner as in Comparative Example 1 except that the substrate was changed to the substrate shown in Table 3.

  From the results of Table 3, it was confirmed that the printed materials of Examples 1 to 9 can obtain a good metallic luster contrast between the region X and the region Y and can further improve the design. Moreover, while the printed matter of Examples 1-9 can visually recognize the printing of a foundation | substrate through a metal film, it was very excellent in the designability because the resolution of a printing layer is favorable.

[Reference Example 1]
A printed layer having a thickness of 1 μm was formed on the substrate F by offset printing using black ink. Next, the adhesive layer of the transfer foil G and the metal film G were transferred to a part of the printed layer by thermal transfer to obtain a printed matter. The visibility of the base, the metallic luster and the metallic luster unevenness of the obtained printed matter were evaluated according to the following criteria.

<Visibility of groundwork>
Evaluation was performed based on the above-described visibility of the foundation.

<Glossy metallic appearance>
Twenty subjects evaluated the average score by assigning two points to those that felt metallic luster very strongly, one point that felt strong metallic luster, and zero points that did not feel metallic luster strongly. “AA” having an average score of 1.7 or more, “A” having an average score of 1.4 or more and less than 1.7, “B” having an average score of 1.0 or more and less than 1.4, A sample having an average score of less than 1.0 was designated as “C”.

<Metallic unevenness>
Two points that do not feel any unevenness in the metallic luster, and if there is a slight difference in the metallic luster if the details are carefully observed, there is one point that does not affect the design, and an unevenness in the metallic luster. Twenty subjects evaluated the score that was felt enough, and the average score was calculated. “AA” having an average score of 1.7 or more, “A” having an average score of 1.4 or more and less than 1.7, “B” having an average score of 1.0 or more and less than 1.4, A sample having an average score of less than 1.0 was designated as “C”.

[Reference Examples 2 to 21]
A printed matter was obtained in the same manner as in Reference Example 1 except that the base material and the transfer foil were changed to those shown in Table 4.

  As is clear from the results in Table 4, the printed materials of Reference Examples 1 to 17 can visually recognize the printing on the foundation through the metal film, have no unevenness in the metallic luster, have a high metallic luster, and have a design property. It was extremely excellent.

  The printed matter and container of the present invention are useful in that they have excellent design properties because they can visually recognize the printing on the base through the metal film and have a good contrast of the metallic gloss of the metal film.

10: substrate 21, 22: print layer 30: adhesive layer 40: metal film 50: Adjustment layers 100a to 100d: printed matter _{D 1:} metallic luster adjustment region _{D 2:} metallic brilliance adjustment region

Claims (5)

A substrate;
A printing layer provided on the substrate;
A metal film provided on the printed layer and having a total light transmittance of 20-80% according to JIS K7361-1: 1997;
An adjustment layer that adjusts the roughness of the surface of the metal film between the base material and the print layer or between the print layer and the metal film;
A region having the metal film, the region having the adjustment layer, a metal gloss adjustment region,
A region in which the metal film is present, and a region in which the adjustment layer is not present, a metal luster non-adjustment region;
Printed matter in which at least one set of the metallic gloss adjustment region and the metallic gloss non-adjustment region is adjacent.   2. The printed matter according to claim 1, wherein the surface of the substrate has a maximum peak height Rp of 10.0 μm or less of a roughness curve of JIS B0601: 2001 having a cutoff value of 0.8 mm.   The printed matter according to claim 1, wherein a pattern is formed by the metal film.   The printed matter according to claim 1, wherein the substrate is a paper substrate.   The container produced using the printed matter of any one of Claims 1-4.