JP6627355B2 - Printed matter and container using the printed matter - Google Patents
Printed matter and container using the printed matter Download PDFInfo
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- JP6627355B2 JP6627355B2 JP2015183285A JP2015183285A JP6627355B2 JP 6627355 B2 JP6627355 B2 JP 6627355B2 JP 2015183285 A JP2015183285 A JP 2015183285A JP 2015183285 A JP2015183285 A JP 2015183285A JP 6627355 B2 JP6627355 B2 JP 6627355B2
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Description
本発明は、印刷物及び該印刷物を用いた容器に関する。 The present invention relates to a printed matter and a container using the printed matter.
従来から、各種の印刷物では、その意匠性を向上させるために、金属光沢を付与することが求められる場合がある。 2. Description of the Related Art Conventionally, in various printed materials, it may be required to impart metallic luster in order to improve the design.
例えば、特許文献１には、紙基材上に、結着樹脂及び金属薄膜細片を含む金属光沢領域層を有する印刷層を形成してなる紙容器が開示されている。
特許文献１の紙容器は、一定レベルの金属光沢を有するものの、印刷により金属光沢を付与するものであるため、高レベルの金属光沢を有するものではなかった。ここで、金属光沢を表現するものとしての「金属光沢感」は、観る角度によって反射強度の急変する度合いによって表現される。
For example, Patent Document 1 discloses a paper container in which a printing layer having a metallic glossy region layer including a binder resin and a metal thin film strip is formed on a paper base material.
Although the paper container of Patent Document 1 has a certain level of metallic luster, it does not have a high level of metallic luster because it imparts metallic luster by printing. Here, “metallic luster” as expressing metallic luster is expressed by the degree of sudden change in reflection intensity depending on the viewing angle.
一方、高レベルの金属光沢を付与するために、基材上に金属蒸着膜が形成された転写箔を用い、転写箔から印刷物上に金属蒸着膜を転写する手段（いわゆる「箔押し」）も行われている。 On the other hand, in order to impart a high level of metallic luster, a means for transferring a metal vapor-deposited film from a transfer foil onto a printed material using a transfer foil having a metal vapor-deposited film formed on a substrate (so-called “foil pressing”) is also performed. Has been done.
箔押しは、金属蒸着膜を用いるため、高レベルの金属光沢を付与することができる。
しかし、箔押しにより形成した金属蒸着膜は下地の絵柄を完全に隠蔽してしまうため、下地の絵柄（印刷層）と金属蒸着膜とは互いに独立した関係となり、意匠性を十分に高めることができなかった。
Foil stamping can provide a high level of metallic luster because a metal deposited film is used.
However, since the metal deposited film formed by the foil stamping completely hides the underlying pattern, the underlying pattern (printing layer) and the metal deposited film are independent of each other, and the design can be sufficiently enhanced. Did not.
本発明は、高い金属光沢を有し、意匠性に優れる印刷物及び容器を提供することを目的とする。 An object of the present invention is to provide a printed material and a container having high metallic luster and excellent design.
上記課題を解決するために本発明者らは、まず、ハーフミラー等で用いられている光透過性を有する金属膜について検討を行った。印刷物上に光透過性を有する金属膜を転写した場合、該金属膜を通して下地の印刷を見ることが可能であり、意匠性は向上する。しかし、印刷層の解像度が悪くなることがあり、意匠性が十分ではなかった。
本発明者らはさらに鋭意研究した結果、印刷物からの反射条件を特定のものとすることにより、印刷層の解像度を良好にし、意匠性を十分に発揮することを見出し、本発明を完成するに至った。
In order to solve the above-described problems, the present inventors first studied a metal film having a light transmitting property used for a half mirror or the like. When a light-transmissive metal film is transferred onto a printed material, the underlying print can be seen through the metal film, and the design is improved. However, the resolution of the print layer sometimes deteriorated, and the design was not sufficient.
The present inventors have further studied diligently, and found that by making the reflection conditions from the printed matter specific, the resolution of the printed layer was improved, and the design was sufficiently exhibited, and the present invention was completed. Reached.
すなわち、本発明は、以下の［１］〜［７］の印刷物及び容器を提供する。
［１］基材上に印刷層を有する印刷物であって、該印刷層上に、ＪＩＳ Ｋ７３６１−１：１９９７の全光線透過率が２０〜８０％である金属膜を有し、該金属膜側の面に向けて、法線から１０度の角度で可視光線を照射した際の正反射方向に対して−４５度〜＋４５度の範囲で０．１度ごとに反射強度を測定し、正反射方向の反射強度の１／５の反射強度を示す拡散角度の絶対値の平均を１／５値角とした際に、該金属膜が位置する少なくとも一部の領域において、該１／５値角が以下の条件（１）を満たす印刷物。
１／５値角≦３．５度 （１）
［２］前記金属膜が位置する少なくとも一部の領域において、前記正反射方向の前後３度における反射強度の平均値を、前記正反射方向の反射強度で除した値を光輝感値とし、該光輝感値が以下の条件（２）を満たす［１］に記載の印刷物。
０．０５≦光輝感値 （２）
［３］前記基材の表面は、カットオフ値０．８ｍｍのＪＩＳ Ｂ０６０１：２００１の算術平均粗さＲａが１．０μｍ以下である金属膜を有する［１］又は［２］に記載の印刷物。
［４］前記基材の表面は、カットオフ値０．８ｍｍのＪＩＳ Ｂ０６０１：２００１の粗さ曲線の最大山高さＲｐが１０．０μｍ以下である［１］〜［３］のいずれかに記載の印刷物。
［５］前記金属膜により絵柄が形成されてなる［１］〜［４］のいずれかに記載の印刷物。
［６］前記基材が紙基材である［１］〜［５］のいずれかに記載の印刷物。
［７］［１］〜［６］のいずれかに記載の印刷物を用いて作製された容器。
That is, the present invention provides printed matter and containers of the following [1] to [7].
[1] A printed matter having a printing layer on a base material, the printing layer having a metal film having a total light transmittance of 20 to 80% according to JIS K7361-1: 1997, wherein the metal film side The reflection intensity is measured every 0.1 degree in the range of -45 degrees to +45 degrees with respect to the regular reflection direction when visible light is irradiated at an angle of 10 degrees from the normal to the surface of When the average of the absolute values of the diffusion angles indicating the reflection intensity of 1/5 of the reflection intensity in the direction is defined as the 1/5 value angle, at least a part of the area where the metal film is located has the 1/5 value angle. Printed matter satisfying the following condition (1).
1/5 value angle ≤ 3.5 degrees (1)
[2] In at least a part of the area where the metal film is located, a value obtained by dividing the average value of the reflection intensity at three degrees before and after the regular reflection direction by the reflection intensity in the regular reflection direction is defined as a glitter value. The printed matter according to [1], wherein the glitter value satisfies the following condition (2).
0.05 ≦ brightness value (2)
[3] The printed matter according to [1] or [2], wherein the surface of the base material has a metal film having a cut-off value of 0.8 mm and an arithmetic average roughness Ra of 1.0 μm or less according to JIS B0601: 2001.
[4] The surface of the base material according to any one of [1] to [3], wherein a maximum peak height Rp of a roughness curve according to JIS B0601: 2001 having a cutoff value of 0.8 mm is 10.0 μm or less. Printed matter.
[5] The printed matter according to any one of [1] to [4], wherein a picture is formed by the metal film.
[6] The printed matter according to any one of [1] to [5], wherein the base material is a paper base material.
[7] A container produced using the printed matter according to any one of [1] to [6].
本発明の印刷物及び容器は、金属膜を通して下地の印刷を視認することができるとともに、印刷層の解像度が良好であることにより、意匠性が極めて優れる。 The printed matter and the container of the present invention have excellent design properties because the underlying printing can be visually recognized through the metal film and the resolution of the printed layer is good.
［印刷物］
本発明の印刷物は、基材上に印刷層を有する印刷物であって、印刷層上に、ＪＩＳ Ｋ７３６１−１：１９９７の全光線透過率が２０〜８０％である金属膜を有し、金属膜側の面に向けて、法線から１０度の角度で可視光線を照射した際の正反射方向に対して−４５度〜＋４５度の範囲で０．１度ごとに反射強度を測定し、正反射方向の反射強度の１／５の反射強度を示す拡散角度の絶対値の平均を１／５値角とした際に、金属膜が位置する少なくとも一部の領域において、１／５値角が以下の条件（１）を満たすものである。
１／５値角≦３．５度 （１）
以下、本発明の印刷物の実施の形態について説明する。
[Print]
The printed matter of the present invention is a printed matter having a printing layer on a base material, and has on the printing layer a metal film having a total light transmittance of JIS K7361-1: 1997 of 20 to 80%, and a metal film The reflection intensity is measured every 0.1 degree in the range of -45 degrees to +45 degrees with respect to the specular reflection direction when the visible light is irradiated at an angle of 10 degrees from the normal line toward the side surface. When the average of the absolute values of the diffusion angles indicating the reflection intensity of 1/5 of the reflection intensity in the reflection direction is set to the 1/5 value angle, at least a part of the region where the metal film is located has the 1/5 value angle. It satisfies the following condition (1).
1/5 value angle ≤ 3.5 degrees (1)
Hereinafter, embodiments of the printed matter of the present invention will be described.
図１は、本発明の印刷物１００の一実施形態を示す断面図である。図１の印刷物１００は、基材１０上に、印刷層２１，２２，２３，２４，２５、金属膜４０をこの順に有している。また、図１の印刷物１００は、印刷層と金属膜との間に接着剤層３０を有している。
なお、図１の印刷物１００は基材１０上の一部に印刷層を有しているが、基材の全面に印刷層を有していてもよい。また、図１の印刷物１００は、印刷層上のみに金属膜４０を有しているが、印刷層を有さない箇所に金属膜４０を有していてもよい。
FIG. 1 is a sectional view showing one embodiment of a printed matter 100 of the present invention. The printed matter 100 of FIG. 1 has printed layers 21, 22, 23, 24, 25, and a metal film 40 on a base material 10 in this order. The printed matter 100 of FIG. 1 has an adhesive layer 30 between the printed layer and the metal film.
In addition, although the printed matter 100 of FIG. 1 has a printing layer on a part of the base material 10, it may have a printing layer on the entire surface of the base material. In addition, the printed matter 100 in FIG. 1 has the metal film 40 only on the print layer, but may have the metal film 40 in a place not having the print layer.
条件（１）
本発明の印刷物は、金属膜側の面に向けて、法線から１０度の角度で可視光線を照射した際の正反射方向に対して−４５度〜＋４５度の範囲で０．１度ごとに反射強度を測定し、正反射方向の反射強度の１／５の反射強度を示す拡散角度の絶対値を１／５値角とした際に、金属膜が位置する少なくとも一部の領域において、１／５値角が以下の条件（１）を満たすものである。
１／５値角≦３．５度 （１）
Condition (1)
The printed matter of the present invention has a range of -45 degrees to +45 degrees with respect to the specular reflection direction when visible light is irradiated at an angle of 10 degrees from the normal to the surface on the metal film side, at intervals of 0.1 degree. When the absolute value of the diffusion angle indicating the reflection intensity of 1/5 of the reflection intensity in the regular reflection direction is set to 1/5 value angle, at least a part of the region where the metal film is located, The ５ value angle satisfies the following condition (1).
1/5 value angle ≤ 3.5 degrees (1)
「１／５値角」が意味するものを説明する。
１／５値角の基準となる「正反射方向の反射強度」は、印刷物に入射し、反射する光のうち、正反射方向（入射光を＋１０度とした場合、−１０度の方向）に反射する光の強度を示している。つまり、正反射方向の反射強度は、金属膜の表面、印刷層の表面、基材の表面及びこれらの層の内部で拡散されることなく、正反射方向に反射された光の強度である。また、正反射方向の反射強度は、金属膜の表面平滑箇所、印刷層の表面平滑箇所及び基材の表面平滑箇所で正反射された光の強度ともいえる。
一方、１／５値角は、印刷物に入射し、反射する光のうち、拡散反射した光が広がる範囲を示している。より具体的には、１／５値角は拡散による反射光が広がる範囲を示している。したがって、１／５値角を示す条件（１）を満たすことは、拡散が過度ではないことを意味している。
What the “１ ／ value angle” means will be described.
The “reflection intensity in the specular reflection direction”, which is a reference for the ５ value angle, is defined as the light reflected on the printed matter and reflected in the specular direction (−10 degrees when the incident light is +10 degrees). The intensity of reflected light is shown. That is, the reflection intensity in the regular reflection direction is the intensity of light reflected in the regular reflection direction without being diffused on the surface of the metal film, the surface of the print layer, the surface of the base material, and inside these layers. In addition, the reflection intensity in the regular reflection direction can be said to be the intensity of light that is specularly reflected at the smooth portion of the surface of the metal film, the smooth portion of the print layer, and the smooth portion of the base material.
On the other hand, the 1/5 value angle indicates a range in which the diffusely reflected light of the light incident on the printed matter and reflected is spread. More specifically, the 1/5 value angle indicates a range in which the reflected light due to diffusion spreads. Therefore, satisfying the condition (1) indicating a ５ value angle means that diffusion is not excessive.
上述したように、条件（１）を満たすことは、拡散が少ないことを意味し、拡散が少ないために解像度が良好となり、印刷物の意匠性を向上させることができる。また、１／５値角が小さ過ぎる場合、拡散が殆どなく、後述する光輝感が低下する傾向がある。このため、条件（１）は、２．０度≦１／５値角≦３．５度を満たすことが好ましく、２．５度≦１／５値角≦３．２度を満たすことがより好ましい。 As described above, satisfying the condition (1) means that there is little diffusion, and since there is little diffusion, the resolution is good and the design of the printed matter can be improved. On the other hand, if the 1/5 value angle is too small, there is almost no diffusion, and the glitter described later tends to be reduced. Therefore, the condition (1) preferably satisfies 2.0 degrees ≦ ２．０ value angle ≦ 3.5 degrees, and more preferably satisfies 2.5 degrees ≦ １ ／ value angle ≦ 3.2 degrees. preferable.
条件（１）は、金属膜が位置する少なくとも一部の領域において満たしていればよい。また、本発明の効果をより良好にするためには、金属膜が位置する全ての領域において、条件（１）を満たすことが好ましい。 The condition (1) only needs to be satisfied in at least a part of the region where the metal film is located. In order to further improve the effect of the present invention, it is preferable that the condition (1) be satisfied in all regions where the metal film is located.
条件（２）
本発明の印刷物は、金属膜が位置する少なくとも一部の領域において、正反射方向の前後３度における反射強度の平均値を、正反射方向の反射強度で除した値を光輝感値とし、光輝感値が以下の条件（２）を満たすことが好ましい。
０．０５≦光輝感値 （２）
Condition (2)
In the printed matter of the present invention, in at least a part of the region where the metal film is located, a value obtained by dividing the average value of the reflection intensity at three degrees before and after the regular reflection direction by the reflection intensity in the regular reflection direction is defined as a glitter value. It is preferable that the sensitivity value satisfies the following condition (2).
0.05 ≦ brightness value (2)
「光輝感値」が意味するものを説明する。
光輝感値の基準となる「正反射方向の前後３度における反射強度の平均値」は、印刷物に入射し、反射する光のうち、正反射方向の前後３度（入射光を＋１０度、正反射光を−１０度とした場合、−７度及び−１３度）における反射する光の強度の平均値を示している。人間は無意識のうちに、正反射光を除いて物を観察する習性がある。このため、人間が感じる印刷物の金属調等の光り輝きの程度（光輝感）は、正反射方向の近傍の反射強度が重要となる。光輝感を高めるには正反射方向の前後３度以内の反射強度が重要となる。特に正反射方向の前後３度の反射強度が重要となる（前後３度の反射強度が高ければ、前後３未満の反射強度はさらに高い値を示す。）。しかし、正反射方向の反射強度よりも、正反射方向の前後３度の反射強度が小さ過ぎると、コントラストの関係から光輝感が感じられにくくなる。このため、正反射方向の前後３度の反射強度の平均値と正反射方向の反射強度との比（光輝感値）が一定範囲であることにより、人間にとって好適な光輝感を有する印刷物となる。
「正反射方向の反射強度」は、上述したように、印刷物に入射し、反射する光のうち、正反射方向に反射する光の強度を示している。
以上より、「光輝感値」は、光輝感を示す光の強度を正反射方向に反射する光の強度で除することにより、光輝感を示す光の強度を相対値として示したものである。
The meaning of the “brightness value” will be described.
The “mean value of the reflection intensity at three degrees before and after the specular reflection direction”, which is a reference of the glitter value, is three degrees before and after the specular reflection direction (incident light at +10 degrees, positive When the reflected light is -10 degrees, the average value of the reflected light intensity at -7 degrees and -13 degrees is shown. Humans have the habit of observing objects except for specularly reflected light, unconsciously. For this reason, the reflection intensity near the specular reflection direction is important for the degree of glitter (brightness) such as the metallic tone of a printed matter that a human perceives. In order to enhance the glitter, the reflection intensity within 3 degrees before and after the regular reflection direction is important. Particularly, the reflection intensity of 3 degrees before and after in the regular reflection direction is important (the reflection intensity of 3 degrees before and after 3 degrees shows a higher value if the reflection intensity of 3 degrees of front and rear is high). However, if the reflection intensity at three degrees before and after in the specular reflection direction is smaller than the reflection intensity in the specular reflection direction, it is difficult to feel the glitter due to the contrast. For this reason, when the ratio (brightness value) between the average value of the three-degree reflection intensity before and after the regular reflection direction and the reflection intensity in the regular reflection direction (brightness value) is within a certain range, the printed matter has a glitteriness suitable for humans. .
As described above, the “reflection intensity in the regular reflection direction” indicates the intensity of light that is incident on the printed matter and reflected in the regular reflection direction, out of the reflected light.
As described above, the “brilliance value” indicates the intensity of the glittering light as a relative value by dividing the intensity of the glittering light by the intensity of the light reflected in the regular reflection direction.
条件（２）を満たすことにより、光輝感を付与することができ、印刷物の意匠性を向上させることができる。
なお、光輝感値が大きすぎると、光輝感に注意が削がれて下地が見えにくくなる傾向にある。このため、条件（２）は、０．０５≦光輝感値≦０．７０を満たすことが好ましく、０．０７≦光輝感値≦０．５０を満たすことがより好ましく、０．１０≦光輝感値≦０．３０を満たすことがさらに好ましい。
By satisfying the condition (2), glitter can be imparted, and the design of printed matter can be improved.
Note that if the glitter value is too large, the glitter tends to be less noticeable and the background is difficult to see. Therefore, the condition (2) preferably satisfies 0.05 ≦ brightness value ≦ 0.70, more preferably satisfies 0.07 ≦ brightness value ≦ 0.50, and 0.10 ≦ brightness value. More preferably, the value satisfies the value ≦ 0.30.
反射強度の測定方法
まず、印刷物の金属膜側の面に向けて、法線から１０度の角度で可視光線を照射する。そして、反射した光について、正反射方向に対して−４５度〜＋４５度の範囲で０．１度ごとに受光器を走査して、各角度での強度（光度）を測定する。強度測定の際は光源の明るさを一定とする。また、強度（光度）測定の際は、受光器の絞りにより検出する受光器の開口角を０．１度とする。このため、例えば、正反射方向（０度）の測定では±０．０５度の範囲を測定し、＋１度の測定では０．９５度〜１．０５度の範囲を測定し、−１度の測定では−０．９５度〜−１．０５度の範囲を測定することになる。
強度を測定する装置については、特に制限はなく、汎用の変角光度計（ゴニオフォトメーター）を用いることができる。本発明においては、変角光度計として、村上色彩技術研究所社製の商品名ＧＰ−２００（光束径：約１０．５ｍｍ、光束内傾斜角：０．２９度以内）を使用した。
Method of Measuring Reflection Intensity First, visible light is irradiated at an angle of 10 degrees from the normal to the surface of the printed matter on the metal film side. Then, for the reflected light, the light receiver is scanned every 0.1 degree in the range of -45 degrees to +45 degrees with respect to the regular reflection direction, and the intensity (luminous intensity) at each angle is measured. At the time of intensity measurement, the brightness of the light source is kept constant. Also, when measuring the intensity (luminous intensity), the aperture angle of the light receiver detected by the stop of the light receiver is set to 0.1 degree. Therefore, for example, in the measurement in the specular reflection direction (0 degree), a range of ± 0.05 degrees is measured, in the measurement of +1 degree, a range of 0.95 degrees to 1.05 degrees is measured. In the measurement, the range of -0.95 degrees to -1.05 degrees is measured.
The apparatus for measuring the intensity is not particularly limited, and a general-purpose goniophotometer (goniophotometer) can be used. In the present invention, as the goniophotometer, GP-200 (trade name: about 10.5 mm, luminous flux inclination angle: within 0.29 degrees) manufactured by Murakami Color Research Laboratory was used.
１／５値角の算出
１／５値角は、上述のように測定した反射強度から算出できる。具体的には、まず、正反射方向の反射強度（正反射強度）の値を確認する。１／５値角を算出する場合は、正反射強度の１／５以下となる測定角度を、プラス方向及びマイナス方向の双方で確認し、該角度の絶対値の平均値を１／５値角とする。このように、１／５値角は、反射強度の実測値から算出できる。なお、反射強度分布図を用いて１／５値角の概算値を知ることもできる。
なお、正反射方向の測定角度が１０度から大きく離れると、反射強度が漸減することなく上下動する場合がある。この場合、正反射強度の１／５以下に落ちた後、１／５を越し、再度１／５以下に落ちることがある。このように、正反射強度の１／５以下となる測定角度が複数観察される場合、１／５以下となる測定角度は、最初に現れる測定角度と、最後に現れる測定角度との中間値とする。
Calculation of 1/5 value angle The 1/5 value angle can be calculated from the reflection intensity measured as described above. Specifically, first, the value of the reflection intensity in the specular reflection direction (specular reflection intensity) is confirmed. When calculating the 1/5 value angle, the measurement angle that is equal to or less than 1/5 of the regular reflection intensity is checked in both the plus direction and the minus direction, and the average value of the absolute value of the angle is calculated as the 1/5 value angle. And Thus, the 1/5 value angle can be calculated from the measured value of the reflection intensity. The approximate value of the 1/5 value angle can also be known using the reflection intensity distribution chart.
When the measurement angle in the specular reflection direction is far away from 10 degrees, the reflection intensity may move up and down without gradually decreasing. In this case, after falling to 1/5 or less of the specular reflection intensity, it may exceed 1/5 and fall to 1/5 or less again. As described above, when a plurality of measurement angles that are equal to or less than 1/5 of the specular reflection intensity are observed, the measurement angles that are equal to or less than 1/5 are the intermediate values between the measurement angle that appears first and the measurement angle that appears last. I do.
光輝感値の算出
光輝感値は、上述のように測定した反射強度から算出できる。具体的には、まず、正反射方向（入射光を＋１０度とした場合、−１０度の方向）の反射強度（正反射強度）の値を確認する。次いで、正反射方向の前後３度（入射光を＋１０度、正反射光を−１０度とした場合、−７度及び−１３度）の値を確認し、それらの反射強度の平均値を算出する。次いで、正反射方向の前後３度の反射強度の平均値を正反射強度で除して、光輝感値を算出する。
Calculation of glitter value The glitter value can be calculated from the reflection intensity measured as described above. Specifically, first, the value of the reflection intensity (specular reflection intensity) in the specular reflection direction (the direction of −10 degrees when the incident light is +10 degrees) is confirmed. Next, the values of 3 degrees before and after the regular reflection direction (-7 degrees and -13 degrees when the incident light is +10 degrees and the regular reflection light is -10 degrees) are checked, and the average value of the reflection intensities is calculated. I do. Next, the brightness value is calculated by dividing the average value of the reflection intensities at three degrees before and after the regular reflection direction by the regular reflection intensity.
基材
基材は、基材表面のカットオフ値０．８ｍｍのＪＩＳ Ｂ０６０１：２００１の算術平均粗さＲａが１．０μｍ以下のものを用いることが好ましい。
基材表面のＲａを１．０μｍ以下とすることにより、拡散を抑制し、印刷物の解像度の低下を抑制することができる。
また、光透過性を有する金属膜の厚みムラに基づく金属光沢感のムラを解消する観点から、基材表面のＲａは、０．３μｍ以上であることが好ましい。基材表面のＲａは、０．４〜０．９μｍであることがより好ましい。
なお、基材として平滑な基材を用い、印刷層を形成するインキにマット剤を含有させることにより、金属膜の表面を凹凸化することも考えられる。しかし、該構成ではマット剤により形成された凹凸が十分に緩和されることなく金属膜に反映される場合があり、その結果、金属膜の表面が過度に凹凸化され、金属光沢感が低下したり、凹凸感が目立ちすぎたりするため好ましくない。
Substrate It is preferable to use a substrate having an arithmetic average roughness Ra of 1.0 μm or less according to JIS B0601: 2001 having a cutoff value of 0.8 mm on the surface of the substrate.
When the Ra on the surface of the base material is 1.0 μm or less, diffusion can be suppressed, and a decrease in resolution of a printed material can be suppressed.
Further, from the viewpoint of eliminating unevenness in metallic glossiness due to unevenness in thickness of the metal film having optical transparency, Ra on the substrate surface is preferably 0.3 μm or more. More preferably, Ra on the surface of the substrate is 0.4 to 0.9 μm.
The surface of the metal film may be made uneven by using a smooth base material and adding a matting agent to the ink forming the print layer. However, in this configuration, the irregularities formed by the matting agent may be reflected on the metal film without being sufficiently relaxed. As a result, the surface of the metal film is excessively irregularized, and the metallic glossiness is reduced. It is not preferable because the unevenness is too conspicuous.
基材の材料は、例えば、上質紙、中質紙、コート紙、合成紙、含浸紙、ラミネート紙、印刷用塗布紙、記録用塗布紙等の紙、ポリエチレンテレフタレートフィルム、ポリエチレンフィルム、ポリプロピレンフィルム、ポリカーボネートフィルム等のプラスチックフィルム、あるいはこれらの複合体等が用いられる。
基材は、紙、プラスチックフィルムあるいはこれらの複合体等の基体に対して、サンドブラスト、ケミカルエッチング等の物理的処理や化学的処理を施すことによって、表面のＲａを上記範囲に調整したものでもよい。また、基材は、紙、プラスチックフィルムあるいはこれらの複合体等の基体に対して、プライマー層を形成することによって、表面のＲａを上記範囲に調整したものでもよい。
Materials of the base material include, for example, high-quality paper, medium-quality paper, coated paper, synthetic paper, impregnated paper, laminated paper, coated paper for printing, coated paper for recording, etc., polyethylene terephthalate film, polyethylene film, polypropylene film, A plastic film such as a polycarbonate film, or a composite thereof is used.
The substrate may be one in which the surface Ra is adjusted to the above range by subjecting a substrate such as paper, a plastic film or a composite thereof to a physical or chemical treatment such as sandblasting or chemical etching. . Further, the substrate may be one in which the surface Ra is adjusted to the above range by forming a primer layer on a substrate such as paper, a plastic film or a composite thereof.
基材の表面は、カットオフ値０．８ｍｍのＪＩＳ Ｂ０６０１：２００１の粗さ曲線の最大山高さＲｐが１０．０μｍ以下であることが好ましく、８．０μｍ以下であることがより好ましく、１．０〜７．０μｍであることがさらに好ましい。
基材表面のＲｐが１０．０μｍ以下であることは、基材表面に極端に高い凸部がなく、基材表面の粗さが平均化されていることを意味する。このため、基材表面のＲｐを１０．０μｍ以下とすることにより、金属光沢感のムラをより解消しやすくできる。
The surface of the base material preferably has a maximum peak height Rp of a roughness curve of JIS B0601: 2001 with a cutoff value of 0.8 mm of not more than 10.0 μm, more preferably not more than 8.0 μm, and more preferably not more than 8.0 μm. More preferably, it is 0 to 7.0 μm.
When the Rp of the substrate surface is 10.0 μm or less, it means that there are no extremely high protrusions on the substrate surface and the roughness of the substrate 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 unevenness in metallic glossiness.
基材の厚みは特に限定されないが、紙基材の場合は、通常は坪量１５０〜５５０ｇ／ｍ２程度であり、プラスチックフィルム基材の場合は、通常は９〜５０μｍ程度である。 The thickness of the base material is not particularly limited, but is usually about 150 to 550 g / m 2 in the case of a paper base, and is usually about 9 to 50 μm in the case of a plastic film base.
印刷層
印刷層は、印刷物の意匠性を高めることを目的として、基材上の任意の箇所に形成される。
印刷層は、通常の黄色、赤色、青色、及び黒色のプロセスカラーによる多色印刷によって形成できる他、印刷パターンを構成する個々の色の版を用意して行う特色による多色印刷等によっても形成できる。
印刷層のパターンは、通常の印刷で用いられるパターン（例えば、文字、数字、図形、記号、風景、人物、動物、キャラクター等）であれば、特に制限されることなく使用できる。
Printing Layer The printing layer is formed at an arbitrary position on the substrate for the purpose of enhancing the design of the printed matter.
The printing layer can be formed by multicolor printing using normal yellow, red, blue, and black process colors, and also by multicolor printing using special colors prepared by preparing individual color plates constituting a printing pattern. it can.
The pattern of the printing layer can be used without any particular limitation as long as it is a pattern used in normal printing (for example, characters, numerals, figures, symbols, landscapes, people, animals, characters, and the like).
印刷層の形成に用いられるインキとしては、バインダー樹脂に顔料、染料等の着色剤、体質顔料、溶剤、安定剤、可塑剤、触媒、硬化剤等を適宜混合したものが使用される。
バインダー樹脂としては特に制限はなく、例えば、アクリル系樹脂、スチレン系樹脂、ポリエステル系樹脂、ウレタン系樹脂、塩素化ポリオレフィン系樹脂、塩化ビニル−酢酸ビニル共重合体系樹脂、ポリビニルブチラール樹脂、アルキド系樹脂、石油系樹脂、ケトン樹脂、エポキシ系樹脂、メラミン系樹脂、フッ素系樹脂、シリコーン系樹脂、繊維素誘導体、ゴム系樹脂等が挙げられる。これらの樹脂は、単独又は２種以上を混合して使用できる。
印刷層中には、本発明の効果を阻害しない範囲で、酸化防止剤、紫外線吸収剤等の添加剤を含有してもよい。
As the ink used for forming the print layer, an ink obtained by appropriately mixing a coloring agent such as a pigment and a dye, an extender pigment, a solvent, a stabilizer, a plasticizer, a catalyst, a curing agent, and the like with a binder resin is used.
There is no particular limitation on the binder resin, for example, acrylic resin, styrene resin, polyester resin, urethane resin, chlorinated polyolefin resin, vinyl chloride-vinyl acetate copolymer resin, polyvinyl butyral resin, alkyd resin And petroleum resins, ketone resins, epoxy resins, melamine resins, fluorine resins, silicone resins, cellulose derivatives, rubber resins, and the like. These resins can be used alone or in combination of two or more.
The printing layer may contain additives such as an antioxidant and an ultraviolet absorber as long as the effects of the present invention are not impaired.
印刷層の厚みは、基材の色味の隠蔽、及び基材表面の凹凸を適度に緩和する観点から、０．５〜１０．０μｍであることが好ましく、０．７〜５．０μｍであることがより好ましい。
印刷層の形成手段は、オフセット印刷、インクジェット印刷、グラビア印刷等の印刷手段から、実施形態に合うものを適宜選択して行えばよい。
The thickness of the print layer is preferably from 0.5 to 10.0 μm, and more preferably from 0.7 to 5.0 μm, from the viewpoint of concealing the color of the base material and moderately reducing unevenness on the surface of the base material. Is more preferable.
The means for forming the printing layer may be appropriately selected from printing means such as offset printing, inkjet printing, gravure printing, etc., according to the embodiment.
接着剤層
印刷層と金属膜との間、あるいは後述する中間層と金属膜との間には、金属膜の密着性を向上するために接着剤層を有することが好ましい。
接着剤層を構成する接着剤は、汎用のホットメルト型接着剤（感熱型接着剤）、感圧型接着剤、硬化型接着剤等が挙げられる。接着剤層は、透明性の高い樹脂から形成することが好ましい。
Adhesive Layer It is preferable that an adhesive layer is provided between the printing layer and the metal film, or between an intermediate layer described later and the metal film in order to improve the adhesion of 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.
接着剤層の厚みは、金属膜の密着性を向上する観点、及び基材表面の粗さを適度に金属膜に反映させる観点から、０．５〜３．０μｍであることが好ましく、１．０〜２．５μｍであることがより好ましい。
接着剤層は、例えば、後述する転写箔を用いて印刷層上に転写して形成することができる。
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 appropriately reflecting the roughness of the substrate surface on the metal film. More preferably, it is 0 to 2.5 μm.
The adhesive layer can be formed, for example, by transferring it onto a printing layer using a transfer foil described later.
中間層
印刷層と金属膜との間、あるいは印刷層と接着剤層との間には、金属膜の密着性を向上すること及び基材表面の粗さを調整することなどを目的として、中間層を有していてもよい。中間層は、透明性の高い樹脂から形成することが好ましい。
Intermediate layer Between the printing layer and the metal film, or between the printing layer and the adhesive layer, an intermediate layer is used to improve the adhesion of the metal film and adjust the roughness of the substrate surface. It may have a layer. The intermediate layer is preferably formed from a highly transparent resin.
金属膜
印刷層は、印刷物の意匠性を高めることを目的として、印刷層上の任意の箇所に形成される。図１の印刷物は、印刷層２１〜２５のうち、印刷層２１〜２４上に金属膜４０を有している。また、図１の印刷物は、金属膜４０と、印刷層との間に、金属膜の密着性を向上させるために接着剤層３０を有している。
金属膜は、印刷層を有さない箇所に形成されていてもよい。また、金属膜によりパターンを形成してもよい。
Metal film The print layer is formed at an arbitrary position on the print layer for the purpose of enhancing the design of the printed matter. The printed matter of FIG. 1 has the metal film 40 on the print layers 21 to 24 among the print layers 21 to 25. Further, the printed matter in FIG. 1 has an adhesive layer 30 between the metal film 40 and the printing layer in order to improve the adhesion of the metal film.
The metal film may be formed at a location having no printing layer. Further, a pattern may be formed with a metal film.
本発明では、金属膜として、ＪＩＳ Ｋ７３６１−１：１９９７の全光線透過率が２０〜８０％である金属膜を用いる。
金属膜の全光線透過率が２０％未満の場合、印刷層のパターンを透かして見ることが困難となり、意匠性を良好にすることができない。また、金属膜の全光線透過率が８０％を超える場合、金属膜の反射率が低下して金属光沢感が低下してしまう。
金属膜の全光線透過率は、３０〜６０％であることが好ましく、４０〜５５％であることがより好ましく、４５〜５０％であることがさらに好ましい。
なお、本発明において、金属膜の全光線透過率は、下記サンプルの２０箇所で全光線透過率を測定した際の平均値とする。
（サンプル）
厚み１ｍｍのソーダ石灰ガラス（屈折率１．５１）上に、厚み１．５μｍの接着剤層（屈折率１．５１）を介して金属膜を形成したもの。
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 is difficult to see through the pattern of the print layer, and it is not possible to improve the design. Further, when the total light transmittance of the metal film exceeds 80%, the reflectance of the metal film is reduced and the metallic glossiness is reduced.
The total light transmittance of the metal film is preferably from 30 to 60%, more preferably from 40 to 55%, further preferably from 45 to 50%.
In the present invention, the total light transmittance of the metal film is an average value when the total light transmittance is measured at 20 points of the following samples.
(sample)
A metal film formed on a 1 mm thick soda-lime glass (refractive index 1.51) via a 1.5 μm thick adhesive layer (refractive index 1.51).
全光線透過率が２０〜８０％の金属膜は、光透過性を有するため厚みが薄い。そして、厚みが薄い金属膜は、僅かな厚みムラがあっても、該厚みムラを原因として、金属光沢感にムラが生じやすい。このため、基材としてＲａが０．３μｍ以上のものを用いて、金属光沢感のムラを解消することが好ましい。 A metal film having a total light transmittance of 20 to 80% has a small thickness because it has light transmittance. And, even if there is slight unevenness in the thickness of the thin metal film, unevenness in the metallic glossiness easily occurs due to the unevenness in the thickness. Therefore, it is preferable to use a substrate having a Ra of 0.3 μm or more to eliminate unevenness in metallic glossiness.
上述した厚みムラは、例えば、金属膜の全光線透過率の標準偏差で表すことができる。具体的には、全光線透過率が２０〜８０％の金属膜の任意の２０箇所のＪＩＳ Ｋ７３６１−１：１９９７の全光線透過率の標準偏差は、通常０．０２〜０．１０％程度である。 The thickness unevenness described above can be represented by, for example, the standard deviation of the total light transmittance of the metal film. Specifically, the standard deviation of the total light transmittance according to JIS K7361-1: 1997 at any 20 places of a metal film having a total light transmittance of 20 to 80% is usually about 0.02 to 0.10%. is there.
金属膜は、アルミニウム、銀、金、ニッケル、銅、クロム等の金属の一種又は二種以上から形成される。これらの中でも、色味が少ないアルミニウム、銀、ニッケルが好ましく、特にアルミニウムがより好ましい。 The metal film is formed of one or more metals such as aluminum, silver, gold, nickel, copper, and chromium. Among them, aluminum, silver, and nickel having a small color are preferable, and aluminum is more preferable.
金属膜は、例えば、転写箔の金属膜を印刷層上に転写することにより形成することができる。
転写箔は、例えば、ベースフィルム上に、離型層、金属膜及び接着剤層を有する構成からなる。
The metal film can be formed, for example, by transferring the metal film of the transfer foil onto the print layer.
The transfer foil has, for example, a configuration having a release layer, a metal film, and an adhesive layer on a base film.
ベースフィルムは汎用のプラスチックフィルムを用いることができる。ベースフィルムの厚みは５〜３０μｍ程度である。 A general-purpose plastic film can be used as the base film. The thickness of the base film is about 5 to 30 μm.
離型層は、転写時にベースフィルムに残ってもよいし、金属膜及び接着剤層とともに印刷物側に転写されてもよい。
転写時にベースフィルムに残る離型層は、離型効果のみを発揮し、シリコーン系離型剤、オレフィン系離型剤等の汎用の離型剤から形成することができる。
転写時に印刷物側に転写される離型層は、転写後は金属膜上に位置し、金属膜を保護する保護層としての機能を有する。かかる保護機能を有する離型層（保護層）は、硬化型の樹脂の硬化物、あるいは金属酸化物膜であることが好ましい。硬化型の樹脂としては、汎用の熱硬化型樹脂、電離放射線硬化型樹脂を用いることができる。金属酸化物膜としては、シリカ、アルミナ等の透明金属酸化物膜が挙げられる。
離型層の厚みは、離型層のタイプにより異なるため一概にはいえない。転写時にベースフィルムに残る離型層の場合、厚みは特に限定されないが、通常０．１〜１．０μｍ程度である。転写時に印刷物側に転写される離型層（保護層）の場合、金属膜を保護する観点、及び金属膜表面の粗さを離型層（保護層）上でも維持する観点から、０．０２〜１．０μｍであることが好ましく、０．０３〜０．５μｍであることがより好ましい。
The release layer may remain on the base film during transfer, or may be transferred to the printed material 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-based release agent or an olefin-based release agent.
The release layer, which is transferred to the printed material during transfer, is located on the metal film after 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, general-purpose thermosetting resins and ionizing radiation-curable resins 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 during transfer, from the viewpoint of protecting the metal film and maintaining the roughness of the metal film surface even on the release layer (protective layer), 0.02 is used. To 1.0 μm, more preferably 0.03 to 0.5 μm.
転写箔の接着剤層は、上述した接着剤層と同様の構成が挙げられる。接着剤層を構成する接着剤がホットメルト型接着剤の場合、金属膜等は熱転写方式で転写できる。また、接着剤層を構成する接着剤が感圧型接着剤の場合、金属膜等はコールド転写法式で転写できる。 The adhesive layer of the transfer foil may have the same configuration as the adhesive layer described above. When the adhesive constituting the adhesive layer is a hot melt type 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, a metal film or the like can be transferred by a cold transfer method.
金属膜上には、本発明の効果を阻害しない範囲で、着色層等の機能層を有していてもよい。 A functional layer such as a colored layer may be provided on the metal film as long as the effect of the present invention is not impaired.
［容器］
本発明の容器は、上述した本発明の印刷物を用いてなるものである。
容器としては、特に制限されることなく、飲料容器、食品容器、薬品容器等が挙げられる。本発明の容器は、金属膜を通して下地の印刷を視認することができるとともに、印刷層の解像度が良好であることにより、意匠性が極めて優れるものである。
[container]
The container of the present invention uses the above-described printed matter of the present invention.
The container is not particularly limited, and includes a beverage container, a food container, a chemical container and the like. The container of the present invention has excellent design properties because the printing of the base can be visually recognized through the metal film and the resolution of the printed layer is good.
次に、本発明を実施例により、さらに詳細に説明するが、本発明は、この例によってなんら限定されるものではない。なお、以下、「部」は特に断りのない限り質量基準を意味する。 Next, the present invention will be described in more detail with reference to examples, but the present invention is not limited to these examples. Hereinafter, “parts” means by mass unless otherwise specified.
１．測定及び評価
実験例で作製した印刷物及びその中間材料について、以下の測定及び評価を行った。結果を表１〜表４に示す。
１−１．反射強度分布
変角光度計（村上色彩技術研究所社製、商品名ＧＰ−２００）を用いて、印刷物の金属膜に向けて、法線から１０度の角度で可視光線（平行光線）を照射した。反射した光について、照射光の正反射方向に対して−４５度〜＋４５度の範囲で０．１度ごとに受光器を走査して、各角度での強度（光度）を測定した。強度（光度）測定の際は、受光器の絞りにより検出する受光器の開口角を０．１度とした。測定結果から、１／５値角及び光輝感値を算出した。
1. Measurement and evaluation The following measurement and evaluation were performed on the printed matter and the intermediate material produced in the experimental examples. The results are shown in Tables 1 to 4.
1-1. Reflection intensity distribution Using a goniophotometer (product name: GP-200, manufactured by Murakami Color Research Laboratory), irradiate visible light (parallel light) at an angle of 10 degrees from the normal to the metal film of the printed matter. did. With respect to the reflected light, the light receiver was scanned every 0.1 degree in the range of -45 degrees to +45 degrees with respect to the regular reflection direction of the irradiation light, and the intensity (luminous intensity) at each angle was measured. At the time of intensity (luminous intensity) measurement, the aperture angle of the light receiving device detected by the aperture of the light receiving device was set to 0.1 degree. From the measurement results, the 1/5 value angle and the glitter value were calculated.
１−２．算術平均粗さＲａ
実験例の印刷物の基材について、カットオフ値０．８ｍｍのＪＩＳ Ｂ０６０１：２００１の算術平均粗さＲａ及び粗さ曲線の最大山高さＲｐを測定した。測定には小坂研究所株式会社製の商品名ＳＥ−３４０を用い、以下の測定条件とした。
［表面粗さ検出部の触針］
Ｍｉｔｕｔｏｙｏ社製の商品名ＳＪ−２１０（先端曲率半径：２μｍ、頂角：６０度、材質：ダイヤモンド）
［表面粗さ測定器の測定条件］
・評価長さ（基準長さ）：カットオフ値λｃの５倍
・触針の送り速さ：０．２５ｍｍ／ｓ
・予備長さ：（カットオフ値λｃ）×２
1-2. Arithmetic mean roughness Ra
With respect to the substrate of the printed material of the experimental example, the arithmetic average roughness Ra and the maximum peak height Rp of the roughness curve according to JIS B0601: 2001 having a cutoff value of 0.8 mm were measured. The measurement was performed under the following measurement conditions using a trade name SE-340 manufactured by Kosaka Laboratory Co., Ltd.
[Stylus of surface roughness detector]
Trade name SJ-210 manufactured by Mitutoyo (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 cut-off value λc ・ Feeding speed of the stylus: 0.25 mm / s
・ Spare length: (cut-off value λc) × 2
１−３．全光線透過率
明細書本文の記載に従って、下記の転写箔Ａ〜Ｍからサンプルを作製し、金属膜Ａ〜Ｍの全光線透過率（ＪＩＳ Ｋ７３６１−１：１９９７）を測定するとともに、金属膜Ａ〜Ｍの全光線透過率の標準偏差を算出した。光入射面はサンプルのソーダ石灰ガラス側とした。
1-3. Total light transmittance Samples were prepared from the following transfer foils A to M according to the description in the specification, and the total light transmittance (JIS K7361-1: 1997) of the metal films A to M was measured. The standard deviation of the total light transmittance of 〜M was calculated. The light incident surface was on the soda-lime glass side of the sample.
１−４．解像度
注意深く観察しても金属膜を通して下地の印刷層のパターンのエッジがぼけて感じられず、パターンのエッジを極めて明確に視認できるものを２点、注意深く観察した際に、金属膜を通して下地の印刷層のパターンのエッジが僅かにぼやけて感じられるが、パターンのエッジを明確に視認することができるもの１点、注意を払わず通常に観察した際でも、金属膜を通して下地の印刷層のパターンのエッジがぼやけて感じられしまい、パターンのエッジを明確に視認することが困難なものを０点として、２０人の被験者が評価を行い、平均点を算出した。平均点が１．７以上のものを「ＡＡ」、平均点が１．４以上１．７未満のものを「Ａ」、平均点が１．０以上１．４未満のものを「Ｂ」、平均点が１．０未満のものを「Ｃ」とした。
1-4. Resolution Even when the pattern is carefully observed, the edges of the pattern of the underlying print layer do not feel blurred through the metal film, and when the pattern edges are observed very carefully, two points can be clearly observed. The edge of the pattern of the layer is slightly blurred, but the edge of the pattern can be clearly seen.One point is that even when the pattern is observed normally without paying attention, the pattern of the underlying print layer can be seen through the metal film. Assuming that the edge was blurred and that it was difficult to visually recognize the edge of the pattern clearly, 20 subjects evaluated the score and calculated the average score. "AA" for those having an average score of 1.7 or more, "A" for those having an average score of 1.4 or more and less than 1.7, "B" for those having an average score of 1.0 or more and less than 1.4, Those having an average score of less than 1.0 were designated as "C".
１−５．光輝感
光輝感を極めて強く感じるものを２点、光輝感を強く感じるものを１点、光輝感を強く感じないものを０点として、２０人の被験者が評価を行い、平均点を算出した。平均点が１．７以上のものを「ＡＡ」、平均点が１．４以上１．７未満のものを「Ａ」、平均点が１．０以上１．４未満のものを「Ｂ」、平均点が１．０未満のものを「Ｃ」とした。
1-5. Glitter feeling Twenty testees evaluated 2 points for those who felt the feeling of glitter extremely strongly, 1 point for those who felt the feeling of glitter strongly, and 0 points for those who did not feel the feeling of glittering strongly, and calculated the average score. "AA" for those having an average score of 1.7 or more, "A" for those having an average score of 1.4 or more and less than 1.7, "B" for those having an average score of 1.0 or more and less than 1.4, Those having an average score of less than 1.0 were designated as "C".
２．中間材料（転写箔）の作製
厚み１２μｍの透明ポリエチレンテレフタレートフィルムの片面上に、厚み０．３μｍのオレフィン系樹脂からなる離型層を形成した。次いで、離型層上に、真空蒸着法によりアルミニウムからなる金属膜Ａを形成した。次いで、金属膜上にホットメルト型接着剤層（アクリル系樹脂、屈折率１．５１）を形成し、転写箔Ａを形成した。また、真空蒸着の時間を変更した以外は、転写箔Ａと同様にして、転写箔Ｂ〜Ｍを得た。
2. Preparation of Intermediate Material (Transfer Foil) A release layer made of a 0.3 μm-thick olefin-based resin was formed on one surface of a 12 μm-thick transparent polyethylene terephthalate film. Next, a metal film A made of aluminum was formed on the release layer by a vacuum evaporation method. 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 transfer foil A, except that the time of vacuum deposition was changed.
３．紙基材の準備
基材として、基材表面のＲａが異なる白色コート紙Ａ〜Ｃ及び白色非コート紙Ｄ〜Ｉを準備した（坪量約２７０ｇ／ｍ２）。
3. Preparation of paper base material White coated papers A to C and white uncoated papers D to I having different Ra on the surface of the base material were prepared as the base material (basis weight: about 270 g / m 2 ).
基材Ａ〜ＩのＲａ及びＲｐを表１に示す。また、金属膜Ａ〜Ｍの全光線透過率及び全光線透過率の標準偏差を表２に示す。
４．印刷物の作製
［実験例１］
基材Ｂ上に、墨インキを用いてオフセット印刷により厚み１μｍの印刷層を形成した。次いで、印刷層の全面を覆うように、下記処方の中間層用インキを乾燥後の厚みが１．０μｍとなるように塗布、紫外線照射して、中間層を形成した。次いで、中間層上に、転写箔Ｇの接着剤層及び金属膜Ｇを熱転写により転写し、実施例１の印刷物を得た。
なお、印刷層は、網点面積率が１０％となるように形成した。
4. Production of printed matter [Experimental example 1]
A printing layer having a thickness of 1 μm was formed on the base material B by offset printing using black ink. Next, an intermediate layer ink having the following formulation was applied so as to have a thickness after drying of 1.0 μm so as to cover the entire surface of the printed layer, and irradiated with ultraviolet rays to form an intermediate layer. Next, the adhesive layer of the transfer foil G and the metal film G were transferred onto the intermediate layer by thermal transfer, and the printed matter of Example 1 was obtained.
In addition, the printing layer was formed so that the halftone dot area ratio might be 10%.
＜中間層用インキ＞
・紫外線硬化性樹脂組成物
（ＤＩＣグラフィックス社製、商品名：ＵＶカルトン ＡＣＴ ＯＰニス）
（主成分として、紫外線硬化性モノマー５５〜６５質量％、合成樹脂１０〜２０質量％、粒子５〜１５質量％、助剤５〜１５質量％を含む混合物）
<Ink for middle layer>
-UV curable resin composition (manufactured by DIC Graphics, trade name: UV Calton ACT OP Varnish)
(A mixture containing 55 to 65% by mass of an ultraviolet curable monomer, 10 to 20% by mass of a synthetic resin, 5 to 15% by mass of particles, and 5 to 15% by mass of an auxiliary as main components)
［実施例２〜３］
網点面積率を表３記載のものに変更した以外は、実施例１と同様にして印刷物を得た。
[Examples 2 to 3]
A printed material was obtained in the same manner as in Example 1 except that the dot area ratio was changed to that shown in Table 3.
［実施例４］
基材Ｂ上に、墨インキを用いてオフセット印刷により厚み１μｍの印刷層を形成した。次いで、印刷層上に、転写箔Ｇの接着剤層及び金属膜Ｇを熱転写により転写して、実施例４の印刷物を得た。
なお、印刷層は、網点面積率が１０％となるように形成した。
[Example 4]
A printing layer having a thickness of 1 μm was formed on the base material B by offset printing using black ink. Next, the adhesive layer of the transfer foil G and the metal film G were transferred onto the print layer by thermal transfer to obtain a printed material of Example 4.
In addition, the printing layer was formed so that the halftone dot area ratio might be 10%.
［実施例５〜６］
網点面積率を表３記載のものに変更した以外は、実施例４と同様にして印刷物を得た。
[Examples 5 to 6]
A printed material was obtained in the same manner as in Example 4, except that the dot area ratio was changed to that shown in Table 3.
［比較例１］
基材Ｆ上に、墨インキを用いてオフセット印刷により厚み１μｍの印刷層を形成した。次いで、印刷層の全面を覆うように、上記処方の中間層用インキを乾燥後の厚みが１．０μｍとなるように塗布、紫外線照射して、中間層を形成した。次いで、中間層上に、転写箔Ｇの接着剤層及び金属膜Ｇを熱転写により転写し、比較例１の印刷物を得た。
なお、印刷層は、網点面積率が１０％となるように形成した。
[Comparative Example 1]
A printing layer having a thickness of 1 μm was formed on the base material F by offset printing using black ink. Next, the intermediate layer ink having the above formulation was applied so as to have a thickness of 1.0 μm after drying so as to cover the entire surface of the print layer, and irradiated with ultraviolet rays to form an intermediate layer. Next, the adhesive layer of the transfer foil G and the metal film G were transferred onto the intermediate layer by thermal transfer, and a printed matter of Comparative Example 1 was obtained.
In addition, the printing layer was formed so that the halftone dot area ratio might be 10%.
［比較例２〜３］
網点面積率を表３記載のものに変更した以外は、比較例１と同様にして印刷物を得た。
[Comparative Examples 2-3]
A printed material was obtained in the same manner as in Comparative Example 1, except that the dot area ratio was changed to that shown in Table 3.
［比較例４］
基材Ｆ上に、墨インキを用いてオフセット印刷により厚み１μｍの印刷層を形成した。次いで、印刷層上に、転写箔Ｇの接着剤層及び金属膜Ｇを熱転写により転写して、比較例４の印刷物を得た。
なお、印刷層は、網点面積率が１０％となるように形成した。
[Comparative Example 4]
A printing layer having a thickness of 1 μm was formed on the base material F by offset printing using black ink. Next, the adhesive layer of the transfer foil G and the metal film G were transferred onto the print layer by thermal transfer, and a printed matter of Comparative Example 4 was obtained.
In addition, the printing layer was formed so that the halftone dot area ratio might be 10%.
［比較例５〜６］
網点面積率を表３記載のものに変更した以外は、比較例４と同様にして印刷物を得た。
[Comparative Examples 5 to 6]
A printed material was obtained in the same manner as in Comparative Example 4, except that the dot area ratio was changed to that shown in Table 3.
表３の結果から、実施例１〜６の印刷物は、条件（１）及び（２）を満たしていることで、光輝感を適度に有し、印刷層の解像度が良好であり、意匠性に極めて優れるものであった。 From the results in Table 3, the printed materials of Examples 1 to 6 have the appropriate brightness, satisfy the conditions (1) and (2), have good print layer resolution, and have good design quality. It was very good.
［参考例１］
基材Ｆ上に、墨インキを用いてオフセット印刷により厚み１μｍの印刷層を形成した。次いで、印刷層上の一部に、転写箔Ｇの接着剤層及び金属膜Ｇを熱転写により転写して、印刷物を得た。得られた印刷物についての下地の視認性、金属光沢感及び金属光沢のムラを以下の基準で評価した。
[Reference Example 1]
A printing layer having a thickness of 1 μm was formed on the base material 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 print layer by thermal transfer to obtain a printed material. The underprint visibility, metallic glossiness and metallic gloss unevenness of the obtained printed matter were evaluated according to the following criteria.
＜下地の視認性＞
金属膜を通して下地の印刷層が暗さを感じることなく視認できるものを２点、金属膜を通して下地の印刷が多少の暗さを感じるが視認することができるもの１点、金属膜を通して下地の印刷層が暗くて視認することが困難なものを０点として、２０人の被験者が評価を行い、平均点を算出した。平均点が１．７以上のものを「ＡＡ」、平均点が１．４以上１．７未満のものを「Ａ」、平均点が１．０以上１．４未満のものを「Ｂ」、平均点が１．０未満のものを「Ｃ」とした。
<Visibility of substrate>
Two points where the underlying print layer can be seen without feeling darkness through the metal film, and one point where the underlying print feels somewhat dark through the metal film but can be seen; Assuming that the layer was dark and it was difficult to visually recognize it as 0 point, 20 subjects evaluated and calculated the average score. "AA" for those having an average score of 1.7 or more, "A" for those having an average score of 1.4 or more and less than 1.7, "B" for those having an average score of 1.0 or more and less than 1.4, Those having an average score of less than 1.0 were designated as "C".
＜金属光沢感＞
金属光沢を極めて強く感じるものを２点、金属光沢を強く感じるものを１点、金属光沢を強く感じないものを０点として、２０人の被験者が評価を行い、平均点を算出した。平均点が１．７以上のものを「ＡＡ」、平均点が１．４以上１．７未満のものを「Ａ」、平均点が１．０以上１．４未満のものを「Ｂ」、平均点が１．０未満のものを「Ｃ」とした。
<Metal luster>
Twenty testees evaluated 2 points for those who felt extremely strong metallic luster, 1 point for those who strongly felt metallic luster, and 0 points for those who did not strongly sense metallic luster, and calculated the average score. "AA" for those having an average score of 1.7 or more, "A" for those having an average score of 1.4 or more and less than 1.7, "B" for those having an average score of 1.0 or more and less than 1.4, Those having an average score of less than 1.0 were designated as "C".
＜金属光沢のムラ＞
金属光沢のムラを全く感じないものを２点、細部を注意深く観察すれば金属光沢にムラを感じる箇所が僅かにあるが、意匠性には影響を与えないものを１点、金属光沢のムラを十分に感じたものを０点として、２０人の被験者が評価を行い、平均点を算出した。平均点が１．７以上のものを「ＡＡ」、平均点が１．４以上１．７未満のものを「Ａ」、平均点が１．０以上１．４未満のものを「Ｂ」、平均点が１．０未満のものを「Ｃ」とした。
<Metal unevenness>
There are two points where the metallic luster is not felt at all, and there are a few places where the metallic luster is uneven if the details are carefully observed. Taking 20 points as a score that sufficiently felt, 20 subjects evaluated and calculated the average score. "AA" for those having an average score of 1.7 or more, "A" for those having an average score of 1.4 or more and less than 1.7, "B" for those having an average score of 1.0 or more and less than 1.4, Those having an average score of less than 1.0 were designated as "C".
［参考例２〜２１］
基材及び転写箔を表４記載のものに変更した以外は、参考例１と同様にして印刷物を得た。
[Reference Examples 2 to 21]
A printed material was obtained in the same manner as in Reference Example 1, except that the substrate and the transfer foil were changed to those shown in Table 4.
表４の結果から明らかなように、参考例１〜１７の印刷物は、金属膜を通して下地の印刷を視認することができるとともに、金属光沢感にムラがなく、高い金属光沢を有し、意匠性に極めて優れるものであった。 As is clear from the results in Table 4, the printed materials of Reference Examples 1 to 17 can visually recognize the underlying printing through the metal film, have no uneven metallic glossiness, have high metallic gloss, and have good design. Was extremely excellent.
本発明の印刷物及び容器は、金属膜を通して下地の印刷を視認することができるとともに、光輝感を適度に有し、印刷層の解像度が良好であることから、意匠性に極めて優れる点で有用である。 The printed matter and the container of the present invention are useful in that the underlying printing can be visually recognized through the metal film, have a suitable glitter, and the resolution of the printed layer is excellent, and the design is extremely excellent. is there.
１０：基材
２１，２２，２３，２４，２５：印刷層
３０：接着剤層
４０：金属膜
１００：印刷物
10: base material 21, 22, 23, 24, 25: printing layer 30: adhesive layer 40: metal film 100: printed matter
Claims (5)
該基材の表面は、カットオフ値０．８ｍｍのＪＩＳ Ｂ０６０１：２００１の算術平均粗さＲａが１．０μｍ以下であり、
該印刷層上に、ＪＩＳ Ｋ７３６１−１：１９９７の全光線透過率が２０〜８０％である金属膜を有し、
該金属膜側の面に向けて、法線から１０度の角度で可視光線を照射した際の正反射方向に対して−４５度〜＋４５度の範囲で０．１度ごとに反射強度を測定し、正反射方向の反射強度の１／５の反射強度を示す拡散角度の絶対値の平均を１／５値角とした際に、該金属膜が位置する少なくとも一部の領域において、該１／５値角が以下の条件（１）を満たし、
該金属膜が位置する少なくとも一部の領域において、該正反射方向の前後３度における反射強度の平均値を、該正反射方向の反射強度で除した値を光輝感値とし、該光輝感値が以下の条件（２）を満たす印刷物。
１／５値角≦３．５度 （１）
０．１０≦光輝感値≦０．３０ （２） A printed matter having a printing layer on a substrate,
The surface of the base material has an arithmetic average roughness Ra of 1.0 μm or less according to JIS B0601: 2001 having a cutoff value of 0.8 mm,
A metal film having a total light transmittance of 20 to 80% according to JIS K7361-1: 1997 on the printing layer,
The reflection intensity is measured every 0.1 degree in the range of -45 degrees to +45 degrees with respect to the regular reflection direction when visible light is irradiated at an angle of 10 degrees from the normal to the surface on the metal film side. When the average of the absolute values of the diffusion angles indicating the reflection intensity of 1/5 of the reflection intensity in the regular reflection direction is set to 1/5 value angle, at least a part of the region where the metal film is located has the 1st angle. / 5 value angle to meet the following conditions (1),
In at least a part of the region where the metal film is located, a value obtained by dividing an average value of the reflection intensity at three degrees before and after the regular reflection direction by the reflection intensity in the regular reflection direction is defined as a glitter value. but printed materials that meet the following conditions (2).
1/5 value angle ≤ 3.5 degrees (1)
0.10 ≦ brightness value ≦ 0.30 (2)
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