JP2020015248A - Printed decorative metal plate and manufacturing method thereof - Google Patents

Abstract

To provide a printed decorative metal plate excellent in designability with a tactile stereoscopic feeling and a visual stereoscopic feeling.SOLUTION: A printed decorative metal plate includes: a primer layer 2; a base coat layer 3; a pattern layer 4; a matte printed layer 5 provided on the pattern layer 4 to form irregularity; and a clear coat layer 6 filling the irregularity of the matte printed layer 5, laminated in this order on one surface of a metal plate 1. The matte printed layer 5 contains a matting agent having an average grain diameter of 100-200% of thickness of the clear coat layer 6.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a decorative printed metal plate and a method for manufacturing the same.

Conventionally, on one surface of a metal plate, a primer layer, a base coat layer, a pattern layer, a mat print layer that forms irregularities on the pattern layer, and a clear coat layer that fills the irregularities of the mat print layer. Are laminated in this order, and a printed decorative metal plate has been proposed (for example, see Patent Document 1). In the printed decorative metal plate described in Patent Literature 1, the matting agent contained in the matte printing layer allows the user to feel a three-dimensional effect due to the tactile sensation and a visual three-dimensional effect.
However, the printed decorative metal plate described in Patent Literature 1 has a problem that the matting agent is buried in the clear coat layer, and the three-dimensional effect due to the tactile sensation and the visual three-dimensional effect are reduced, and the design property is reduced.

JP 2017-164942 A

  The present invention has been made in view of the above-mentioned problems, and has a three-dimensional effect by touch and a visual three-dimensional effect, and provides a printed decorative metal plate excellent in design and a method of manufacturing the same. The purpose is to:

In order to solve the above problems, one embodiment of the present invention is to provide (a) matte printing on one surface of a metal plate, in which a primer layer, a base coat layer, a pattern layer, and irregularities are formed on the pattern layer. And a clear coat layer that fills the unevenness of the mat print layer in this order. (B) The mat print layer is 100% or more and 200% or more of the thickness of the clear coat layer. The gist of the present invention is a printed decorative metal plate containing a matting agent having the following average particle size.
Another aspect of the present invention is (a) the method for producing a decorative printed metal plate described above, wherein (b) a mat printing layer of the decorative printed metal plate is formed by using a printing plate manufactured by laser pochelle plate making. The gist of the present invention is to provide a method of manufacturing a printed decorative metal plate formed by the used printing method.

  According to the present invention, since the matting agent protrudes from the surface of the clear coat layer, the three-dimensional effect due to the tactile sensation and the three-dimensional effect can be visually felt by the protruding mat material. Therefore, it is possible to provide a decorative sheet having a three-dimensional effect by touch and a visual three-dimensional effect, and excellent in design.

It is a figure explaining a printed decorative metal plate concerning an embodiment based on the present invention.

  Hereinafter, a printed decorative metal plate and a method for manufacturing the same according to an embodiment of the present invention will be described with reference to the drawings. The present invention is not limited to the embodiments described below, and modifications such as design changes can be made based on the knowledge of those skilled in the art. Included in the range. In addition, each drawing is appropriately exaggerated for easy understanding.

(Constitution)
As shown in FIG. 1, a printed decorative metal plate 10 according to an embodiment of the present invention includes a metal plate 1, a primer layer 2, a base coat layer 3, a picture layer 4, a mat print layer 5, and a clear coat layer. 6 and a back coat layer 7. Then, on one surface 1 a of the metal plate 1, a primer layer 2, a base coat layer 3, a picture layer 4, a mat printing layer 5 for forming concavities and convexities on the picture layer 4, Are filled in this order. On the other surface 1b of the metal plate 1, a back coat layer 7 is laminated.

(Metal plate)
The metal plate 1 is a plate serving as a base of the printed decorative metal plate 10. As a material of the metal plate 1, for example, a hot-dip galvanized steel plate or an aluminum plate can be used. A hot-dip galvanized steel sheet is a steel sheet in which galvanization (metal film) is formed on the surface of a steel sheet in order to improve adhesion and corrosion resistance to paint. Further, a chemical conversion coating 8 may be provided on the surface layer of the galvanized steel sheet in order to improve white rust resistance. As the chemical conversion film 8, for example, a chromate film or a chromate-free film can be adopted. In particular, a chromate-free film is most desirable from the viewpoint of environmental load. The chromate-free film 7 can be formed by a chromate-free treatment (non-chromate treatment). Examples of the processing liquid used for the chromate-free processing include, for example, a processing liquid containing no hexavalent chromium, for example, a processing liquid containing Zr or Ti or a salt thereof, or a processing liquid containing a silane coupling agent. Can be adopted. A chromate-free film containing Ti, Zr, P, Ce, Si, Al, Li, etc. as a main component and containing no chromium is formed on a zinc plating layer by a chromate-free treatment using such a treatment liquid. it can. That is, the chromate-free film includes, for example, Ti, Zr, P, Ce, Si, Al, or Li, or any combination thereof. The type of the metal plate 1 is not particularly limited, and may be, for example, a single metal plate or a metal plate constituting the outermost layer of a composite steel plate.

(Primer layer)
The primer layer 2 is a layer for improving adhesion and corrosion resistance between the base coat layer 3 and the metal plate 1. As a material of the primer layer 2, for example, a known resin paint for a primer can be used. As the resin paint, for example, a curable paint containing a polyester resin, a urethane resin, an epoxy resin, a melamine resin, an alkyd resin, a phenol resin, an acrylic resin, or the like can be used. Further, a rust preventive pigment may be added to the primer layer 2 for the purpose of improving corrosion resistance. The thickness of the primer layer 2 is, for example, 1 μm or more and 10 μm or less.

(Base coat layer)
The base coat layer 3 is a layer for giving the base color of the picture layer 4 to the printed decorative metal plate 10. As a material of the base coat layer 3, for example, a known resin paint containing a binder resin for base coat can be used. As the binder resin, for example, a thermosetting resin such as a polyester resin, a urethane resin, an epoxy resin, a melamine resin, an alkyd resin, a phenol resin, and an acrylic resin can be employed. In addition, a base color pigment is added to the resin coating. The thickness of the base coat layer 3 is, for example, not less than 10 μm and not more than 30 μm.

(Picture layer)
The picture layer 4 is a layer for giving the printed decorative metal plate 10 a design with a picture. The picture layer 4 is formed using a printing ink or paint obtained by dissolving or dispersing a coloring agent such as a dye or a pigment in a suitable diluting solvent with a suitable binder resin. The printing ink or paint is applied by, for example, various printing methods such as a gravure printing method, an offset printing method or an inkjet printing, or various coating methods such as a gravure coating method or a roll coating method. In addition, as the binder resin, for example, a known binder resin can be adopted. For example, a thermosetting resin such as a polyester resin, a urethane resin, an epoxy resin, a melamine resin, an alkyd resin, a phenol resin, and an acrylic resin as used in the above-described primer layer 2 can be employed. Further, as the pigment, for example, a known pigment can be used. For example, titanium oxide, zinc white, carbon black, iron / composite oxide, iron oxide, organic pigment, metallic pigment, pearl pigment and the like can be used. Of these, iron / composite oxide is used as a thermal barrier pigment.

  The pattern is not particularly limited. For example, a wood pattern, a stone pattern, a cloth pattern, an abstract pattern, a geometric pattern, a character, a symbol, a plain solid color, or a combination of two or more of these are used. Can be used. The thickness of the picture layer 4 is, for example, not less than 0.1 μm and not more than 0.2 μm. In addition, when inkjet printing is used, the thickness of the picture layer 4 is larger than this range.

(Matte printing layer)
The mat print layer 5 is a layer for giving a three-dimensional effect by visual sense and a three-dimensional effect by touch feeling. For example, it is partially formed on the picture layer 4 and covers a part of the picture layer 4 (for example, when the picture of the picture layer 4 is a wood grain pattern, a part facing the pipe pattern of the wood grain pattern). The mat printing layer 5 is formed using a printing ink or the like obtained by dissolving or dispersing a matting agent in a suitable diluting solvent together with a suitable binder resin. The printing ink or the like is applied by various printing methods using a printing plate, such as a gravure printing method or an offset printing method. As the binder resin, for example, a thermosetting resin such as a polyester resin, a urethane resin, an epoxy resin, a melamine resin, an alkyd resin, a phenol resin, and an acrylic resin, and an ultraviolet-curable resin can be used. Further, the thermosetting resin may be a two-component curable resin.

  As the matting agent, for example, inorganic fine particles such as silica, calcium carbonate, synthetic mica, and titanium oxide glass particles, polyethylene fine particles, acrylic fine particles, urethane fine particles, urea resin, nylon resin, and organic fine particles such as balloons may be used. it can. The average particle size of the matting agent is preferably 100% or more and 200% or less of the thickness of the clear coat layer 6 in order to give a three-dimensional effect by visual sense and a three-dimensional effect by touch. That is, since the thickness of the clear coat layer 6 is required to be about 10 μm from the viewpoint of physical properties, if the thickness is assumed to be 10 μm, the particle diameter of the matting agent is preferably 10 μm or more and less than 20 μm. If it is less than 100%, the matting agent is buried in the clear coat layer 6, and the mat feeling and the touch feeling are weakened, and the three-dimensional effect due to the visual sense and the tactile feeling becomes difficult to feel. On the other hand, if it is larger than 200%, the matting agent falls off the printed decorative metal plate 10.

The average particle size of the matting agent can be controlled, for example, by pulverizing a mass of the matting agent to form particles and then sieving the matting agent so as to be within a desired range. Here, the average particle size is an average particle size obtained by microscopic observation. The average particle diameter obtained by microscopic observation is obtained, for example, by performing microscopic observation, measuring 100 particle diameters of arbitrary fine particles using image processing software or the like, and averaging the particle diameters. In addition, a particle diameter points out the average value of the major axis diameter and the minor axis diameter of the particles of the matting agent.
When the mat printing layer 5 contains a plurality of matting agents, the average particle size of the matting agent having the largest content among the plurality of matting agents is set to 100% of the thickness of the clear coat layer 6. At least 200%. As a result, the mat feeling and the touch feeling can be more reliably felt, and the three-dimensional effect by the visual sense and the three-dimensional effect by the tactile feeling can be more reliably felt.

  Further, the addition amount of the matting agent is preferably 5 parts by mass or more and 20 parts by mass or less based on 100 parts by mass of the binder resin. Further, the pattern of the mat print layer 5 is not particularly limited. Can be used. In the case of forming a conduit pattern, it is preferable that the pipe pattern is arranged in synchronization with the pattern of the pattern layer 4. Synchronization is a state where the picture and the conduit pattern overlap by 50% or more as viewed from the front side. As a printing plate for printing the mat printing layer 5, a printing plate manufactured by a laser pochelle plate is used. Here, the mat printing layer 5 may become whitish by adding a matting agent such as silica. Therefore, it is preferable to mix a color pigment such as black ink, iron / composite oxide, iron oxide, carbon black, etc. with the ink resin. By adding black ink, the color becomes dark brownish and a more realistic grain can be expressed.

(Clear coat layer)
The clear coat layer 6 is a transparent layer for providing the printed decorative metal plate 10 with weather resistance, bending workability, scratch resistance, and cleanability. As a main component of the clear coat layer 6, for example, a curable resin can be used. That is, it is preferable that the resin component is substantially composed of a curable resin. Substantially means, for example, 80 parts by mass or more when the whole resin is 100 parts by mass. As the curable resin, for example, an ionizing radiation curable resin or a thermosetting resin can be adopted. Further, the clear coat layer 6 may include, for example, a fluorine resin. Further, the clear coat layer 6 may optionally contain a weathering agent, a plasticizer, a stabilizer, a filler, a dispersant, a dye, a pigment, a solvent, and the like. However, the content of the curable resin is preferably 60 parts by mass or more of the whole resin. The thickness of the clear coat layer 6 is preferably from 10 μm to 15 μm.

  The clear coat layer 6 contains an aggregate so that the scratch resistance is improved. As the aggregate, for example, transparent aggregates such as feldspar, silica sand, cold water stone, glass beads, and synthetic resin beads can be used. The average particle size of the aggregate is not more than the average particle size of the matting agent. If the average particle size is larger than the average particle size of the matting agent, the unevenness due to the aggregate affects the mat feeling and the touch feeling, and the design is reduced. When the mat printing layer 5 includes a plurality of matting agents, the average particle size of the aggregate is equal to or smaller than the average particle size of the matting agent having the largest content among the plurality of matting agents. .

(Back coat layer)
The back surface coating layer 7 is a layer for covering the other surface 1 b of the metal plate 1, that is, the back surface of the printed decorative metal plate 10. The back coat layer 7 is formed by applying a paint or the like containing a polyester resin or an epoxy resin as a main component to the metal plate 1 and then baking the applied paint.

  As described above, the printed decorative metal plate 10 according to the embodiment of the present invention includes the primer layer 2, the base coat layer 3, the pattern layer 4, and the pattern layer 4 on one surface 1a of the metal plate 1. A mat printing layer 5 provided thereon to form irregularities and a clear coat layer 6 filling the irregularities of the mat printing layer 5 are laminated in this order. Then, the mat printing layer 5 contains a matting agent having an average particle diameter of 100% or more and 200% or less of the thickness of the clear coat layer 6. Therefore, it is possible to prevent the matting agent from being buried in the clear coat layer 6, to provide the printed decorative metal plate 10 having a three-dimensional effect by touch and a visual three-dimensional effect, and excellent in design.

In addition, the printed decorative metal plate 10 according to the embodiment of the present invention can perform a single process from the chemical conversion treatment of the metal plate 1 to the application of the curable resin of the clear coat layer 6, thereby reducing the manufacturing cost.
Moreover, in the printed decorative metal plate 10 according to the embodiment of the present invention, when the mat printing layer 5 includes a plurality of matting agents, the average of the matting agents having the largest content among the plurality of matting agents is used. The particle size was set to 100% or more and 200% or less of the thickness of the clear coat layer 6. Therefore, the three-dimensional effect by the visual sense and the three-dimensional effect by the tactile effect can be more reliably felt.
Further, in the printed decorative metal plate 10 according to the embodiment of the present invention, the clear coat layer 6 has an average particle size equal to or smaller than the average particle size of the matting agent having the largest content among the plurality of matting agents of the matte printing layer 5. An aggregate having a diameter was included. Therefore, it is possible to suppress the unevenness due to the aggregate from affecting the mat feeling and the touch feeling, and it is possible to suppress the reduction in design.

In the printed decorative metal plate 10 according to the embodiment of the present invention, since the metal plate 1 is a hot-dip galvanized steel plate having a chromate-free film, the environmental load during manufacturing can be reduced.
In the method of manufacturing the decorative metal plate 10 according to the embodiment of the present invention, the mat print layer 5 of the decorative metal plate 10 is formed by a printing method using a printing plate manufactured by laser pochelle plate making. I made it. Here, the printing plate manufactured by the laser pochelle plate making has, for example, a larger cell volume of the printing plate than the printing plate manufactured by the Helio plate making. Therefore, by using the printing plate manufactured by the laser pochelle plate making, it is possible to increase the halftone dots of the ink constituting the mat printing layer 5, and to more surely realize the three-dimensional effect by the visual sense and the three-dimensional effect by the tactile sense. You can feel it.

Hereinafter, examples and comparative examples of the printed decorative metal plate 10 according to the embodiment of the present invention will be described.
(Examples 1 to 10, Comparative Examples 1 to 4)
As shown in Tables 1 and 2, the details of the matting agent added to the matte print layer 5 and the plate specifications of the matte print layer 5 were set, and the printed decorative metals of Examples 1 to 10 and Comparative Examples 1 to 4 were set. A plate 10 was produced. At this time, as the metal plate 1, a steel plate having a thickness of 0.4 mm according to JIS G 3302 coated with hot-dip galvanizing and further provided with a chromate-free coating as a chemical conversion coating 8 was used.

(Performance evaluation)
Subsequently, the following performance evaluation was performed on the printed decorative metal plates 10 of Examples 1 to 10 and Comparative Examples 1 to 4.
(Gloss mat effect evaluation)
In the evaluation of the gloss mat effect, the printed decorative metal plate 10 was viewed, and the visual three-dimensional effect was evaluated. The evaluation criteria were as follows: "O" when the visual three-dimensional effect was firmly felt, "△" when the visual three-dimensional effect was slightly felt, and "X" when the visual three-dimensional effect was not felt. "
(Evaluation of touch feeling)
In the evaluation of touch feeling, the printed decorative metal plate 10 was touched with fingers, and the three-dimensional effect due to the touch feeling was evaluated. The evaluation criteria were as follows: “○” when the three-dimensional effect due to the tactile sensation was firmly felt, “△” when the three-dimensional effect due to the tactile sensation was slightly felt, and “×” when the three-dimensional effect due to the tactile sensation was not felt. "

(Evaluation results)
As shown in Tables 1 and 2, in the printed decorative metal plates 10 of Examples 1 to 8, the gloss mat effect evaluation and the feeling of touch were evaluated as “」 ”. The printed decorative metal plates 10 of Examples 9 and 10 had a gloss mat effect evaluation and a feeling of touch evaluation of “○” or “△”. Here, in the printed decorative metal plate 10 of Examples 1 to 4, the mat printing layer 5 is provided using a printing plate (plate depth 60 μm) manufactured by laser pochelle plate making. The printed decorative metal plate 10 is provided with a mat printing layer 5 using a printing plate (plate depth 100 μm) manufactured by Helio plate making. That is, in Examples 1 to 4, 9 and 10, a printing plate made by laser pochelle plate making at a plate depth of 60 μm and a printing plate made by Helio plate making at a plate depth of 100 μm were tested. In Examples 9 and 10 using ()), the gloss mat effect evaluation and the feel evaluation were worse than in Examples 1 to 4 using a printing plate (plate depth 60 μm) by laser pochelle plate making with a shallow plate depth. became. This is because when the mat printing layer 5 is provided by using a printing plate manufactured by Helio plate making, the cell volume is larger than when the mat printing layer 5 is provided by using a printing plate manufactured by laser Posell printing. It is thought to be smaller.

On the other hand, in the printed decorative metal plates 10 of Comparative Examples 1 and 2, the matting agent having the largest content among the plurality of matting agents of the matte printing layer 5 was buried in the clear coat layer 6, and the matte feeling and the touch feeling were felt. Became weak, the gloss mat effect evaluation was “△”, and the touch feeling evaluation was “×”. Further, in the printed decorative metal plates 10 of Comparative Examples 3 and 4, the average particle diameter of the aggregate of the clear coat layer 6 was the average of the largest amount of the matting agent among the plurality of matting agents of the matte printing layer 5. Since the particle size is larger than the particle size (15 μm) (20 μm), the unevenness due to the aggregates affects the matt feeling and the touch feeling, and the gloss mat effect evaluation is “X” or “△”, and the touch evaluation is “X”. .
Therefore, it was confirmed that the printed decorative metal plates 10 of Examples 1 to 10 were more excellent in the evaluation of the gloss mat effect and the feeling of touch than the decorative printed metal plates 10 of Comparative Examples 1 to 4.

  DESCRIPTION OF SYMBOLS 1 ... Metal plate, 1a ... One surface of a metal plate, 1b ... The other surface of a metal plate, 2 ... Primer layer, 3 ... Base coat layer, 4 ... Picture layer, 5 ... Matt print layer, 6 ... Clear coat layer, 7: Back coat layer, 8: Conversion coating, 10: Printed metal plate

Claims (5)

On one surface of the metal plate, a primer layer, a base coat layer, a pattern layer, a mat print layer that forms irregularities on the pattern layer, and a clear coat layer that fills the irregularities of the mat print layer, A printed decorative metal plate laminated in this order,
The printed decorative metal plate, wherein the mat printing layer includes a matting agent having an average particle diameter of 100% to 200% of the thickness of the clear coat layer.   When a plurality of matting agents are contained in the mat printing layer, the average particle size of the matting agent having the largest content among the plurality of matting agents is at least 100% of the thickness of the clear coat layer. The printed decorative metal plate according to claim 1, wherein the content is 200% or less.   The printed decorative metal according to claim 2, wherein the clear coat layer includes an aggregate having an average particle diameter equal to or less than an average particle diameter of the matting agent having the largest content among the plurality of matting agents. Board.   The printed metal plate according to any one of claims 1 to 3, wherein the metal plate is a galvanized steel sheet having a chromate-free film. It is a manufacturing method of the printed decorative metal plate according to any one of claims 1 to 4,
A method for producing a printed decorative metal plate, wherein the mat print layer of the printed decorative metal plate is formed by a printing method using a printing plate manufactured by laser pochelle plate making.

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