JP2018161846A - Building board and manufacturing method therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a building board capable of forming a stereoscopic pattern with suppressing reduction of productivity and a manufacturing method therefor.SOLUTION: There is related a building board having a coated film 21 and an ink layer 22 on a surface of a substrate 10. The coated film 21 has a surface formed by an uneven surface 211. The ink layer 22 is formed on the uneven surface 211. The uneven surface 211 of the coated film 21 is formed by compression of a printing plate 30. The ink layer 22 is formed by being printed with the printing plate 30 having the uneven surface 211 formed.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a building board and a manufacturing method thereof. In detail, it is related with the building board used for an outer wall material, a roof material, etc., and its manufacturing method.

  Conventionally, a building board is manufactured by forming a pattern on the surface of a base material by printing (see, for example, Patent Document 1). Examples of printing types include relief printing such as flexographic printing, intaglio printing such as gravure printing, and ink jet printing.

JP 2002-264463 A

  However, in printing, it is difficult to deposit ink thickly on the surface of the substrate, and it is difficult to form a pattern with a three-dimensional effect by printing. Therefore, it is possible to increase the thickness (film thickness) of the ink by printing the same pattern repeatedly using a single printing plate. However, productivity is increased because the same pattern is printed many times. There was a risk of lowering.

  This invention is made | formed in view of said point, and it aims at providing the building board which suppresses the fall of productivity, and can form a three-dimensional pattern by printing, and its manufacturing method. .

The building board according to the present invention is
A building board having a coating film and an ink layer on the surface of a substrate,
The coating film is formed with an uneven surface,
The ink layer is formed on the uneven surface,
The uneven surface of the coating film is formed by pressing the printing plate,
The ink layer is formed by printing with the printing plate on which the uneven surface is formed.

  In the building board which concerns on this invention, it is preferable that the height difference of the said uneven surface is 20 micrometers or more.

The method for manufacturing a building board according to the present invention is as follows:
Press the printing plate against the paint applied to the surface of the substrate to form a coating film with an uneven surface on the surface,
An ink layer is formed by printing ink on the uneven surface using the printing plate.

  In the present invention, since the ink layer is formed on the uneven surface, a three-dimensional pattern can be formed by printing without increasing the thickness of the ink layer, and it is not necessary to print the ink many times. , Productivity reduction can be suppressed.

FIG. 1A is a schematic view illustrating a base material coating step in the method for manufacturing a building board according to the present invention. FIG. 1B is a plan view showing the base material after painting. FIG. 1C is a cross-sectional view showing the base material after painting. FIG. 2: A is schematic which shows the uneven | corrugated surface formation process of the coating film in the manufacturing method of the building board which concerns on this invention. FIG. 2B is a plan view showing an uneven surface of the above-described coating film. FIG. 2C is a cross-sectional view showing the base material after painting. FIG. 3A is a schematic view showing an ink layer forming step in the method for manufacturing a building board according to the present invention. FIG. 3B is a plan view showing the ink layer after printing. FIG. 3C is a cross-sectional view showing the building board same as above.

  Hereinafter, modes for carrying out the present invention will be described.

  FIG. 3C shows the building board 1 of the present embodiment. The building board 1 includes a base material 10 and a decorative layer 20 formed on the surface of the base material 10. The decorative layer 20 includes a coating film 21 and an ink layer 22 formed on the surface of the coating film 21. The ink layer 22 is formed so as to be substantially along the surface of the coating film 21 formed on the uneven surface 211.

  The building board 1 is manufactured as follows.

  First, as shown in FIG. 1A, a paint 210 for forming the coating film 21 is applied to the surface of the substrate 10. The base material 10 is a ceramic base material that is a cured product of a molding material mainly composed of cement. However, the base material 10 is not limited to this, and the base material 10 is a wood material or a metal material conventionally used for building materials. May be. As shown in FIGS. 1B and 1C, the surface of the substrate 10 to which the paint 210 is applied is formed as a flat surface, but is not limited thereto, and may be an uneven surface. Further, a base agent such as a sealer may be applied to the surface of the substrate 10 to which the paint 210 is applied. An enamel paint or the like is used as the paint 210. The coating material 210 is applied to the entire surface of the substrate 10, but is not limited thereto, and may be partially applied to the surface of the substrate 10. The thickness of the paint 210 after application is not particularly set, but in order to form the coating film 21 having the uneven surface 211, the thickness of the paint 210 after application is set to be larger than the height difference of the uneven surface 211. The thickness is preferably set, for example, 30 to 100 μm. As a method for applying the paint, known means can be employed, for example, roll coating, spray coating, curtain flow coating, ink jet printing, and the like can be employed.

  Next, after the coating material 210 applied to the substrate 10 is in a semi-cured state, the printing plate 30 is pressed against the surface of the coating material 210 as shown in FIG. 2A. Thereby, the unevenness | corrugation of the surface of the printing plate 30 is transcribe | transferred to the coating material 210 of a semi-hardened state, and uneven | corrugated patterning is performed. Here, the semi-cured state of the paint 210 refers to a state in which the viscosity of the paint 210 has increased to such an extent that the uneven shape transferred when the printing plate 30 is pressed can be maintained. In order to make the paint 210 in a semi-cured state, energy such as heat and light can be applied to the paint 210, thereby promoting the curing of the uncured paint 210. As the printing plate 30, a roll-shaped intaglio plate (a plate cylinder provided with a printing plate used for gravure printing) can be used, but a relief plate or a stencil plate can also be used. Then, the semi-cured paint 210 is further dried and cured, and as shown in FIGS. 2B and 2C, the coating film 21 having a surface with an uneven surface (uneven pattern) 211 is formed. Here, the difference in height of the uneven surface 211 (difference between the highest and lowest uneven portions) is preferably 20 μm or more, so that the three-dimensional effect can be achieved without increasing the thickness of the ink layer 22. A certain decorative layer 20 can be formed.

  Next, as shown in FIGS. 3B and 3C, an ink layer 22 is formed on the surface of the coating film 21. The ink layer 22 is formed by printing ink on the uneven surface 211 of the coating film 21. As the ink, known inks such as water-based ink and ultraviolet curable ink can be used. The ink layer 22 is formed by printing using the printing plate 30 in which an uneven surface is formed on the paint 210. Thereby, the shape of the uneven surface 211 easily matches the shape of the ink to be printed, and the ink layer 22 substantially along the uneven surface 211 is easily formed efficiently.

  The ink layer 22 is formed using a printing plate 30 and an ink supply roll 31 as shown in FIG. 3A. The ink supply roll 31 is a roll that supplies ink to the surface of the printing plate 30. The peripheral surface of the ink supply roll 31 is formed, for example, on a concavo-convex surface engraved in the left-right and up-down inverse symmetry with respect to the pattern of the printing plate 30. The peripheral surface of the ink supply roll 31 may be a surface without unevenness. The printing plate 30 and the ink supply roll 31 are arranged to face each other so that their peripheral surfaces are in contact with each other. Reference numeral 32 in FIG. 3A is a doctor blade for scraping off excess ink, and reference numeral 33 is a cleaner blade for cleaning the surface of the printing plate 30. Then, the ink filled in the concave portion (not shown) of the ink supply roll 31 is transferred to the surface of the printing plate 30, and the ink transferred to the printing plate 30 is transferred to the uneven surface formed on the surface of the coating film 21. Then, the ink layer 22 can be formed by drying and curing the ink on the uneven surface of the coating film 21.

  In the building board 1 of this embodiment, in order to form the ink layer 22 on the uneven surface 211 of the coating film 21, a pattern with a three-dimensional effect can be formed by printing without increasing the thickness of the ink layer 22, In addition, it is not necessary to print the ink many times, and a reduction in productivity can be suppressed.

  In the above embodiment, the step of forming the uneven surface 211 on the coating film 21 and the step of forming the ink layer 22 on the uneven surface 211 are separate, but the present invention is not limited to this. For example, the uneven surface 211 and the ink layer 22 may be simultaneously formed by printing on the base material 10 on which the coating film 21 is formed using the printing plate 30. In this case, for example, the viscosity of the coating film 21 may be set to be equal to or less than the viscosity of the ink forming the ink layer 22, or the viscosity of the coating film 21 is adjusted and the pressing force of the printing plate 30 is adjusted. May be imparted with a low strength and shape retention, and may be printed with the surface layer of the coating film 21 dried.

  Hereinafter, the present invention will be specifically described by way of examples.

(Examples 1-4, Comparative Examples 1-3)
As the base material, a ceramic base material which is a cured product of a molding material mainly containing cement was used. The surface of the base material was formed flat.

  The paint is an enamel in which a pigment (mixed pigment of titanium oxide, ocher, bengara, and carbon black) is blended in an acrylic emulsion paint “View Acrylic” manufactured by Dainippon Paint Co., Ltd. to a PWC (pigment weight concentration) of 40%. Paint was used.

  As the ink, product number “PH350” manufactured by Dainichi Seika Kogyo Co., Ltd. was used.

  And the coating material was apply | coated by the spray so that it might become the thickness shown in Table 1 on the surface of a base material. Next, the applied paint was heated to a semi-cured state. Next, the roll-shaped intaglio (gravure plate) was pressed against the semi-cured paint to form the surface of the semi-cured paint on an uneven surface. Next, the coating material which has an uneven surface on the surface was formed by heating the semi-hardened coating material. Table 1 shows the height difference of the uneven surface of the coating film. Next, the ink was offset-printed with the intaglio plate having the uneven surface, and this ink was dried and cured to form an ink layer on the uneven surface of the coating film.

  About the building board formed as mentioned above, the three-dimensional design property was evaluated. The evaluation method was judged by whether or not the pattern looked three-dimensional when viewed from a place 1 m away from a painted building board.

  As can be seen from Table 1, three-dimensional design properties were obtained in the examples, but three-dimensional design properties were not obtained in the comparative examples.

DESCRIPTION OF SYMBOLS 1 Building board 10 Base material 21 Coating film 22 Ink layer 211 Uneven surface 30 Printing plate

Claims (3)

A building board having a coating film and an ink layer on the surface of a substrate,
The coating film is formed with an uneven surface,
The ink layer is formed on the uneven surface,
The uneven surface of the coating film is formed by pressing the printing plate,
The building board is formed by printing the ink layer with the printing plate on which the uneven surface is formed. In claim 1,
A building board having a height difference of 20 μm or more on the uneven surface. Press the printing plate against the paint applied to the surface of the substrate to form a coating film with an uneven surface on the surface,
A method for manufacturing a building board, wherein an ink layer is formed by printing ink on the uneven surface using the printing plate.

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