JP2010240923A - Printed matter having ruggedness on surface - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a printed matter which can be manufactured inexpensively and has ruggedness on its surface where uniform size of varnish particles are formed at a desired position to form ruggedness, from which uniform varnish particles of desired size does not drop and which has excellent wear resistance and high decorativeness. <P>SOLUTION: The printed matter comprises at least a base material, a cissing layer and a glossy layer. The glossy layer is formed by applying varnish in a dot shape on the cissing layer by using a dot plate. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a printed matter having irregularities on a surface that can be produced at a low cost and has excellent cosmetic properties.

  Conventionally, a concavo-convex pattern is formed on the surface by using an embossed substrate as a printed matter having a concavo-convex pattern. However, since the cost of embossed substrates is high, such printed materials are often used, for example, in foods. However, in order to reduce manufacturing costs even slightly, embossed substrates are not used. There was a problem that it was difficult.

  Therefore, for example, as shown in Patent Document 1 and Patent Document 2, an oil-repellent undercoat ink or paint is applied to a part or the entire surface of the substrate to provide a repellent layer, and the undercoat ink is dried. Alternatively, a surface-processed printed coating or the like having a concavo-convex pattern formed by applying an electron beam or a UV curable overcoat clear paint on an undried repellent layer to provide a concavo-convex forming layer (varnish layer) Proposed.

  However, these surface-processed printing coated products and printed materials have been formed by performing solid printing on the surface of the repellent layer using a solid plate (flat plate) for the unevenness forming layer (varnish layer). Therefore, the varnish layer is formed by irradiating ultraviolet rays to form varnish particles, but the location where the varnish particles are formed cannot be specified, and what kind of uneven pattern is formed is irradiated with ultraviolet rays. There was a problem of not knowing without trying. Moreover, since the size of the varnish particles formed was also different, the appearance of the same printed matter may differ depending on the location, and there was a problem that the cosmetics were low.

Japanese Patent Laid-Open No. 06-278354 JP 2008-10051 A

  The present invention has been made in view of the above-described circumstances, and the object of the present invention is to form uneven varnish by forming varnish particles of uniform size at desired positions, which can be manufactured at low cost. Another object of the present invention is to provide a printed matter having irregularities on the formed surface, and further, uniform varnish particles having a desired size do not fall off, excellent wear resistance, and high cosmetic properties.

  The above object of the present invention comprises at least a base material, a repellent layer, and a glossy layer, and the glossy layer is formed by applying a varnish to the repellent layer in a halftone dot pattern using a halftone dot plate. This is achieved by providing a printed matter having irregularities on the surface, which is characterized in that it is formed.

Further, the above object of the present invention is to form the repellent layer by applying a coating liquid of 0.3 to ² g / m ² , and the glossy layer by applying a varnish of 1 to 5 g / m ^2. This is effectively achieved by providing a printed product having a textured surface.

  Furthermore, the above object of the present invention can be achieved more effectively by providing a printed material having irregularities on the surface, wherein the varnish has a viscosity of 500 cps or more.

  According to the printed matter having unevenness on the surface according to the present invention, it comprises at least a base material, a repellent layer, and a glossy layer, and a glossy layer is formed by applying a varnish in a halftone pattern using a halftone plate. Thus, the varnish particles formed by curing and agglomerating the varnish of the glossy layer are formed at a desired position and in a uniform size. Therefore, the printed matter having unevenness on the surface according to the present invention does not use an expensive base material that has been embossed, is low in cost, does not fall off varnish particles, has excellent wear resistance, and has cosmetic properties. , It can be excellent in design.

It is a schematic sectional drawing of the printed matter which concerns on this invention. It is a schematic sectional drawing which shows the example of a change of the printed matter which concerns on this invention. It is a schematic sectional drawing which shows the other modified example of the printed matter which concerns on this invention. It is a schematic sectional drawing which shows the other modified example of the printed matter which concerns on this invention.

  Hereinafter, the printed matter having unevenness on the surface according to the present invention will be described in detail with reference to the drawings. In addition, this invention is not limited to the following embodiment, It cannot be overemphasized that the structure can be changed suitably in the range which does not deviate from a claim.

  FIG. 1 shows a schematic cross-sectional view of a printed material (hereinafter referred to as “the printed material”) having irregularities on the surface according to the present invention. As shown in FIG. 1, the printed material 1 includes at least a base material 2, a repelling layer 3, and a gloss layer 4. That is, a repellent coating solution is applied on the surface of the substrate 2 to provide a repellent layer 3, and a varnish is printed on the surface of the repellent layer 3 to form a glossy layer 4. Configured.

  The substrate 2 is not particularly limited, and is based on pulp, for example, high-quality paper, art paper, coated paper, glossy paper, impregnated paper, paperboard, depending on the use and needs of the printed material 1 Various known materials such as polypropylene (PP) and polyethylene (PE) can be used by appropriately selecting one or two or more according to the intended use and needs. Among these, in particular, a silver base such as silver foil or aluminum vapor-deposited paper increases the brightness and improves the cosmetics of the printed material 1. In addition, as shown in the schematic cross-sectional view of the printed material 1A in FIG. 2, the substrate 2 may be provided with a printing layer 5 by appropriately performing desired printing depending on the application. Furthermore, as shown in the schematic cross-sectional view of the printed material 1B in FIG. 3, when using a highly absorbent base material as the base material 2, so that the repelling layer 3 can be formed on the uniform base material 2, A sealing layer 6 may be provided.

  The repellent layer 3 is formed by applying a coating liquid having liquid repellency to the varnish of the gloss layer 4. As such a liquid-repellent coating solution, various types such as Scepter DTOP varnish manufactured by DIC Corporation, UV-HJK underprint varnish ON-DRY D manufactured by T & K TOKA, and the like can be used. As a result, the wettability of the surface of the base material 2 is lowered, so that the varnish of the gloss layer 4 to be described later formed on the surface of the repellent layer 3 is more easily removed, cured and aggregated, and the varnish particles 7 are formed. The concavo-convex pattern can be formed.

The coating amount of the coating liquid for forming such a repelling layer 3 is 0.3 to ² g / m ² . Thereby, since the varnish grain 7 of a uniform size can be formed on the surface of the printed material 1, the surface of the printed material 1 is excellent without being uneven or crushed. It comes to have a beautiful cosmetics. If the coating amount is less than 0.3 g / m ² , the repellency phenomenon of the gloss layer 4 cannot be generated, and it becomes difficult to form the varnish particles 7 or even if the varnish particles 7 are formed. Therefore, the printed material 1 cannot be uneven. On the other hand, if the coating amount exceeds ² g / m ² , it takes time to dry, resulting in poor drying, poor adhesion, and sufficient silicon to cause the cissing phenomenon is not sufficiently raised, so that there is uniformity. Unevenness is not obtained.

  Moreover, as a method of apply | coating such a liquid-repellent coating liquid, gravure printing, flexographic printing, a roll coater system, etc. are mentioned.

  The gloss layer 4 is formed on the surface of the repellent layer 3 by applying a varnish in a halftone dot pattern using a halftone dot plate. Thus, by forming the gloss layer 4 on the surface of the repellent layer 3 in the form of a halftone dot, it is possible to specify the position where the varnish of the gloss layer 4 is relieved, cured and aggregated to form the varnish particles 7. In addition, the size of the varnish grains 7 can be substantially specified. Therefore, this printed matter 1 can form the convex part 8 of the uniform magnitude | size in the desired position, and is excellent in cosmetics. Further, the gloss layer 4 does not need to be provided on the entire surface of the substrate 2, and the substrate 2 is embossed by changing the halftone dot of the halftone plate on which the gloss layer 4 is provided to a desired pattern such as a pattern or a figure. Without applying, it is possible to reproduce a desired pattern on the printed matter 1 and to further improve the cosmetics and design.

  Further, when the varnish for forming the gloss layer 4 has a viscosity of 500 cps or more, varnish particles having a uniform size can be more easily formed at a desired position. That is, if the gloss layer 4 is formed with a varnish having a viscosity of less than 500 cps, the viscosity of the varnish is too low. Therefore, even if the varnish is applied in a dot pattern, the varnish is formed before the varnish particles 7 are cured by curing ultraviolet rays or the like. Will spread and the adjacent varnishes will stick together. For this reason, it becomes difficult to form the varnish grains 7 having a uniform size at a desired position.

  As such a varnish, various known ones such as an ultraviolet curable varnish and an electron beam curable varnish can be used. In particular, an ultraviolet curable varnish is preferable because it has excellent printability.

The coating amount of the varnish that forms the gloss layer 4 is preferably 1 to 5 g / m ² . Thereby, the varnish grain 7 of a uniform size can be more easily formed at a desired position. If the coating amount of the varnish of the gloss layer 4 is less than 1 g / m ^{2, the} amount of varnish is too small, and the varnish particles 7 formed by curing and agglomerating the varnish without being cured are not uniform. There is a risk of blurring. On the other hand, when the coating amount exceeds 5 g / m ² , the coating amount is too large and it takes time to dry, so that the uniform varnish particles 7 cannot be formed and the friction resistance is reduced. May fall off.

  Moreover, it is preferable that the glossy layer 4 of the printed matter 1 is formed using a halftone dot plate having a halftone dot ratio of 5 to 75%, more preferably 10 to 50%. As a result, the varnish grains 7 formed by varnishing, curing, and aggregating can be more easily formed in a uniform size at a desired position. When a halftone dot plate having a halftone dot ratio of less than 5% is formed, an attempt is made to apply a coating amount of the glossy layer 4 desired by the present application. The amount of coating applied at the convex portion is increased. That is, since the gloss layer 4 is thick, it takes time to dry, and it becomes difficult to form the varnish grains 7 of uniform size, and the friction resistance is also reduced. There is a possibility that the varnish particles 7 may fall off during transport of printed matter having a print. On the other hand, when the gloss layer 4 is formed using a halftone plate having a halftone dot ratio exceeding 75%, the interval between adjacent varnishes becomes too short. There is a risk that adjacent varnish portions may stick together due to the vibration of the conveyor or the like until the varnish particles 7 are formed by curing. For this reason, it may be difficult to form varnish grains 7 having a uniform size at a desired position.

  The surface roughness of the printed material 1 is 1 to 5 μm when the dot ratio of the halftone plate is 5%, 2 to 10 μm when 10%, 5 to 20 μm when 35%, and 5 to 25 μm when 50%. When it is 75%, the range of 10 to 30 μm is preferable because the varnish grains 7 have a uniform size, do not fall off, have excellent friction resistance, and have high aesthetics.

Furthermore, when using a halftone dot plate having a dot percentage of less than 10%, or when using a halftone dot plate of 50% or more, the coating amount of the varnish for forming the gloss layer 4 should be 1 g / m ² or less. By doing so, the uniform varnish grain 7 can be formed more easily.

  The printed matter 1 irradiates the gloss layer 4 with ultraviolet rays or the like after forming the repellent layer 3 and the gloss layer 4 on the surface of the substrate 2 as described above. As a result, the varnish of the gloss layer 4 is peeled off by the repelling layer 3 and cured / aggregated to form varnish particles 7 on the surface of the repelling layer 3, thereby forming irregularities on the surface of the printed material 1.

As described in detail above, 0.3 to ² g / m ^{2 of a} coating solution containing silicon is applied on the surface of the base material 2 to provide a repellency layer 3. On the surface of the repellency layer 3, after 1 to 5 g / m ² printing varnish halftone dot shape with a dot plate (coated) to provide a gloss layer 4, by irradiating ultraviolet rays to cure and aggregation by repel varnish gloss layer 4 By forming the varnish particles 7, the varnish particles 7 do not fall off without using the embossed base material 2, and the varnish particles 7 are excellent in wear resistance and uniform at a desired position. Since varnish particles 7 having a large size can be formed, a printed matter having irregularities on the surface excellent in cosmetics and design can be easily obtained.

  Hereinafter, in order to confirm the effect of the method for producing a printed matter having a concavo-convex pattern according to the present invention, the following various samples were prepared, and a test for evaluating the quality of each sample was performed. In addition, in a present Example, the numerical value which shows a mixing | blending, a density | concentration, etc. is a numerical value based on the weight of a solid content or an active ingredient. Moreover, the base material, chemical | medical agent, etc. which are shown in a present Example are only examples, and it cannot be overemphasized that this invention is not restrict | limited by these Examples, and can be selected suitably.

  A printed matter having 25 kinds of concavo-convex patterns manufactured by the manufacturing method according to the present invention (referred to as “Example 1” to “Example 25”) and these Examples 1 to 25 are compared. In order to study, a printed matter having a concavo-convex pattern (hereinafter referred to as “Comparative Example 1”) was produced with a configuration as shown in Table 1.

<Example 1>
As the base material, cast coat tack base paper cast 73 general strong viscosity SBG85S manufactured by Daio Paper Co., Ltd. was used. In the repellency layer forming step, the coating liquid was applied to the surface of this base material at 0.3 g / m ^2. A repellent layer was formed. In addition, as this coating solution, Scepter DTOP varnish EM manufactured by DIC Corporation was used. Next, in the glossy layer forming step, a glossy layer was formed by applying 3 g / m ^{2 of} varnish to the surface of the repellent layer using a halftone dot plate having a halftone dot ratio of 5%. As a varnish for forming the gloss layer, Dicure Clear UV16 manufactured by DIC Corporation having a viscosity of 500 cps was used. And the ultraviolet-ray was irradiated by the uneven | corrugated pattern formation process, the varnish of the glossy layer was removed, and it hardened and aggregated, the convex part was formed, and the printed matter (Example 1) which has an uneven | corrugated pattern was produced.

<Examples 2 to 25 and Comparative Example 1>
A printed matter having a concavo-convex pattern obtained in the same manner as in Example 1 except for the conditions shown in Table 1. In Example 25, Aronix M-101A manufactured by Toagosei Co., Ltd. was used as the varnish for forming the gloss layer, and the viscosity was adjusted.

  Table 1 shows the results of quality evaluation for all of these Examples and Comparative Examples. These evaluation tests were conducted under environmental conditions of a temperature of 23 ± 1 ° C. and a humidity of 50 ± 2% in accordance with JIS-P8111.

  “Surface roughness” in Table 1 is the average unevenness of the varnish grains formed by the glossy layer of the printed material having the uneven pattern as each sample. This is a value obtained by measuring the center line average roughness Ra by “SE-30H” and a roughness analyzer “Surfcoder AY-41”.

“Uniformity” is an evaluation of whether or not the varnish particles formed on the printed material having the concavo-convex pattern as each sample are formed uniformly. In the evaluation method, five samples obtained by cutting the sample into a size of 10 cm square were prepared, and 20 people visually evaluated whether or not each sample looked the same using a magnifying glass. The evaluation criteria were as follows.
A: Evaluated that everyone looks almost the same.
○: Except for 2 to 3 people, it was evaluated that they look almost the same.
X: Less than 10 people evaluated that they look almost the same.

Further, “friction resistance” is an evaluation of whether or not varnish grains formed on each sample do not fall off. In the evaluation method, each sample was cut into a size of 30 mm × 300 mm to prepare two samples, and after the surfaces on which the concavo-convex pattern of each sample was formed were rubbed 100 times according to the method described in JISP8136, The drop of the varnish particles on the surface of the sample as a sample was evaluated using a magnifying glass, and the evaluation criteria were as follows.
(Double-circle): There is no omission of a varnish grain.
○: Slightly removed varnish particles, but the appearance is not impaired and there is no practical problem.
X: Many varnish grains fall off and the appearance is poor.

  From Table 1, the glossy layer varnish applied in a halftone dot pattern with a halftone dot plate as a printed matter having a concavo-convex pattern produced by the production method according to the present invention, that is, a printed matter according to Examples 1 to 25. It can be seen that the varnish grains formed by being cured and agglomerated can be uniformly formed at desired positions.

1, 1A, 1B, 1C Printed matter having unevenness 2 Base material 3 Repelling layer 4 Glossy layer 5 Printing layer 6 Sealing layer 7 Varnish grain 8 Convex part

Claims (3)

It comprises at least a base material, a repellent layer, and a glossy layer,
The glossy layer is formed by applying a varnish to the repellant layer in a halftone dot pattern using a halftone dot plate, and has a surface with unevenness. The repelling layer is formed by a coating solution 0.3 to 2 g / m ² was coated, the luster layer according to claim 1, characterized in that formed varnish was 1 to 5 g / m ² coating Printed material with irregularities on the surface.   The printed matter having unevenness on the surface according to claim 1, wherein the varnish has a viscosity of 500 cps or more.

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