JP2003312117A - Method for coating ceramic building board - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for coating a ceramic building board which has a complicated and naturally profound appearance and a delicate difference in the appearance between individual ceramic building boards. <P>SOLUTION: A plurality of ink concentrated parts 201 are formed by an ink jet coating process in inks 300 and 301 spray-coated onto each of projecting faces 21 for design of a cement processed board 2, and an edge part pattern 213 with a larger thickness of inks 300 and 301 at the outer peripheral part 202 of each of the ink concentrated parts 201 than the thickness of the other part, is created. Next, the patterns 411 and 412 of each of printing rolls 40 are printed by gravure offset printing so that their printing positions are correlated with each other to the entirety of the projecting faces 21 for design. Thus a superposed gravure offset printing layer 216 with ink coating materials 440 and 441 of a varying thickness is formed. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a ceramic building board coating method capable of producing a ceramic building board having a complicated design pattern on a board surface or a design convex surface.

[0002]

2. Description of the Related Art Some ceramic-based building boards that are applied to the outer wall of a building have a large number of convex surfaces for design. Then, the design pattern of the convex surface for design is devised by its coating method so as to exhibit various appearance design characteristics. For example, in Japanese Patent No. 2784529,
It is disclosed that the building board is spot-painted by inkjet coating to obtain a randomly blurred pattern. Further, for example, Japanese Patent No. 3214565 discloses forming a pattern of abundant variations on the building board by gravure offset printing.

[0003]

[Problems to be Solved] However, although the above-mentioned coating process is simple depending on the above-mentioned conventional method of coating a building board, the convex surface for each design in the building board has an appearance design of fired brick or natural stone. Is not sufficient to give a natural, deep appearance with a delicate shade or light and darkness. That is, it is not enough to perform the above-mentioned individual coating methods in order to exhibit the above-mentioned natural deep appearance, and further devising is required for the above-mentioned building board coating method.

The present invention has been made in view of the above conventional problems, and it is possible to provide a complex and natural appearance with depth, and the board surfaces and design convex surfaces of each ceramic building board are slightly different. The present invention is intended to provide a method for coating a ceramic building board that can have an excellent appearance.

[0005]

According to a first aspect of the present invention, at least a part of the surface of a cement-based treated plate is spray-coated with ink for design pattern formation by inkjet coating at a target position, and the target position is obtained. An ink jet coating step for forming a plurality of ink concentrating portions in which ink is concentrated on each of the ink concentrating portions, and generating an edge portion pattern in which the ink thickness is increased in each outer peripheral portion of the ink concentrating portion; Gravure offset printing in which the thickness of the ink paint has changed on the entire plate surface by printing the ink paint for pattern pattern formation on the entire plate surface having a plurality of ink concentration parts A gravure offset printing step of forming a printing layer is performed, which is a coating method for a ceramic building board (claim 1).

[0006] In the present invention, in order to form a ceramic building board that has a natural, deep appearance, the above-mentioned device for inkjet coating and device for gravure offset printing are used. And what is important in the present invention is that
In the inkjet coating process, a plurality of ink concentration parts (see FIG. 7) are formed at the aimed positions on at least a part of the plate surface of the cement-based treatment plate, and This is to generate an edge pattern (see FIG. 8) in which the thickness of the ink is increased at each outer peripheral portion.

The edge pattern means that the ink is concentrated on the outer peripheral portion of the ink concentrated portion, and the outer peripheral portion has a large thickness due to the ink (for example, has a thickness of 30 to 50 μm) and the color due to the ink. Form a dark portion, while the thickness of the ink surrounded by the outer peripheral portion is smaller than that of the outer peripheral portion (for example, 10 to 30 μm).
Has a thickness of. ), And a pattern in which a light-colored portion of ink is formed (the same applies hereinafter). The edge pattern is generated because the pigment in the ink in the ink concentrated portion hardly flows in the solvent in the ink and cannot flow so much expanded from the position where the spray coating is performed. is there.

That is, the pigment in the spray-coated ink tends to flow in the solvent in the ink so as to spread radially. However, by forming a state in which the pigment in the ink is hard to flow, the pigment in the ink cannot spread beyond the outer peripheral portion of the ink concentrated portion, and concentrates on the outer peripheral portion. The edge pattern is formed in this manner. Then, the edge portion pattern can be positively generated in the vicinity of the aimed position where the ink is spray-painted to form a complicated design pattern close to a natural pattern.

In the gravure offset printing step, the ink paint for pattern pattern formation is printed by gravure offset printing on the entire surface of the plate having a plurality of ink concentration portions where the edge portion pattern is generated. . At this time, a gravure offset printing layer is formed on the entire surface of the plate, the gravure offset printing layer having the thickness of the ink coating changed to be partially thick or thin. Then, a gravure offset printing layer in which light and shade of color (or light and dark) are formed by the change in the thickness of the ink paint is formed.

Further, the gravure offset printing layer is
For example, it can be formed by transferring the ink paint held on the pattern formed on the surface of a printing roll used for gravure offset printing to the surface of the plate.
The change in the thickness of the gravure offset printing layer can be formed by changing the depth of the plurality of cells forming the pattern. In this case, specifically, the depth of the plurality of cells can be set to 1 to 80 μm.

As described above, by performing the ink jet coating and the gravure offset printing in combination, a complicated design pattern in which a plurality of ink concentration portions that generate the edge portion pattern and the gravure offset printing layer overlap each other Are formed on the plate surface. As a result, the cement-based treated plate is complicated and can have a natural deep appearance represented by fired bricks and natural stones. After each of the above steps, it is preferable to perform clear coating on the surface of the cement-treated plate in order to protect the surface state of the cement-treated plate that has been subjected to the inkjet coating and the gravure offset printing for a long period of time. .

[0012] As described above, the ceramic building board formed from the cement-treated plate has a complex and natural deep appearance, and considering the effect of the edge pattern, each ceramic system Architectural boards can be manufactured in a state where there are few ceramic-based building boards that have the same appearance but have a slightly different appearance while being in harmony overall.

A second aspect of the present invention is a preparatory step for preparing a cement-treated plate having a convex surface for design on the surface of which a minute unevenness is formed, and an inkjet coating for the convex surface for design of the cement-treated plate. The ink for forming the design pattern is spray-painted at the aimed position to form a plurality of ink concentrated parts in which the ink is concentrated at the aimed position. Inkjet coating process that produces an edge pattern with a large thickness, and gravure offset printing of ink paint for pattern pattern formation on the design convex surface that has a plurality of ink concentration parts that produced the edge pattern. At the time of performing the gravure offset printing, a plurality of printing rolls are brought into contact with the design convex surface to print each pattern pattern of each printing roll, and Printing of each pattern is performed by associating the printing positions of each pattern with respect to the design convex surface of one cement-based treated plate with each other, and the overlay gravure offset printing in which the thickness of the ink paint is changed on the design convex surface. A gravure offset printing step of forming a layer is performed, which is a coating method for a ceramic building board (claim 2).

In the present invention, the above-mentioned ink jet coating and the above-mentioned gravure offset printing are applied to the cement-based treated plate having the design convex surface to form a ceramic building plate having a natural and deep appearance. That is, in the above-mentioned preparation step, a cement-based original plate having a design convex surface having minute irregularities formed on the surface of the plate is formed, and various treatments such as a base treatment and an undercoat are performed to obtain a cement-treated plate.

Further, it is preferable that the cement-based treated plate has a large number of design convex surfaces on which a large number of minute irregularities are formed. Further, it is preferable that the plurality of design convex surfaces have a plurality of patterns. When the cement-based base plate is formed by a dry or semi-dry papermaking method, it is preferable that the cement-based treated plate is formed in a plurality of types due to the difference in the convex surface for design (for example, FIG. (See FIG. 13). In addition, the above-mentioned cement-based original plate can be formed by a wet papermaking method, and in this case, a plurality of products of the same type will be formed (for example, one of either FIG. 2 or FIG. 13 is formed). .).

The plurality of types of cement-based treated plates are, for example, the number of design convex surfaces, the pattern shape and arrangement state, and the number of the minute irregularities, the size, the arrangement state and the large number of minute irregularities. It is formed by the difference in the pattern on the front and so on, and various different appearances are exhibited by combining these.

Further, in the ink jet coating step, it is preferable to apply a plurality of types of design patterns to the cement-based treated plate depending on a difference in a plurality of ink concentration portions that have generated the edge portion pattern. Here, this design pattern is a coating pattern that is set by changing the position and amount of inkjet coating on each design convex surface, and makes the appearance of the cement-based treated plate as a whole different. is there. Therefore, for example, four different types of design patterns can be prepared for four types of cement-based treated plates (FIGS. 2 and 1).
3 shows two types of cement-based treated plates. ).

Therefore, when the plurality of design patterns are applied, a type obtained by multiplying the type of the cement-based treated plate and the type of the design pattern at the time of performing the preparation process and the ink jet coating process. The cement-based treated plate of No. 1 will be formed. For example, in this case, 16 types of ceramic-based building boards can be obtained by applying 4 types of design patterns to each of the 4 types of cement-based treated boards.

The important thing in the present invention is that
Similar to the above-mentioned invention, in the inkjet coating process, with respect to the design convex surface of the cement-based treated plate,
In addition to forming the plurality of ink concentrating portions, each ink concentrating portion is provided with an edge pattern in which the thickness of the ink is increased at each outer peripheral portion. Then, the edge portion pattern can be positively generated in the vicinity of the aimed position where the ink is spray-painted to form a complicated design pattern close to a natural pattern.

Also in the gravure offset printing process of the present invention, similarly to the above-mentioned invention, a pattern pattern is formed on the entire design convex surface having a plurality of ink concentration portions in which the edge pattern is generated. Ink paint for printing is printed by gravure offset printing. Furthermore, in the present invention, the depth of a plurality of cells forming the pattern pattern in each of the printing rolls is changed (for example, 1 to 80 μm).
Can be changed to. ), So that a gravure offset printing layer having a thickness changed by the above ink paint can be formed. Then, using a plurality of printing rolls, printing is performed by associating the printing positions of the pattern patterns of the respective printing rolls with respect to the entire design convex surface on one cement-based treatment plate with each other.

At this time, the gravure offset printing layer with the pattern of the printing roll in the first stage and the gravure offset printing layer with the pattern of the printing roll in the second and subsequent stages are formed on every cement-based treatment plate. Printing is performed in the same manner as above. Therefore, a combination of the gravure offset printing layers having different thicknesses due to the ink paint forms a superimposed gravure offset printing layer in which more complex shades (or light and dark) of colors are formed.

Although the pattern of each printing roll may be the same or different, each ink paint used in each printing roll is a different kind of ink paint having a different color or composition. preferable. As each of the ink paints, for example, a bright color such as yellow can be used for the first printing roll and a dark color such as brown can be used for the second printing roll. in this way,
By printing the overprint pattern on each of the design convex surfaces, the cement-based treated plate can exhibit a deep color tone.

Further, with respect to each design convex surface, the print position of the pattern pattern in the first step and the print position of the pattern pattern in the second step and thereafter are almost the same as the start position of the pattern pattern printing. There can be no deviation (eg ± 1
Printing can be performed while allowing an error within mm. ).
On the other hand, the print position of the pattern on the first stage and the print position of the pattern on the second and subsequent stages can be intentionally displaced from each other (for example, by shifting 20 to 30 cm). Can be printed).

As described above, by performing the ink jet coating and the gravure offset printing in combination, a complicated design in which the plurality of ink concentration portions in which the edge pattern is generated and the overlapping gravure offset printing layer are overlapped with each other A pattern is formed on the design convex surface. As a result, the cement-based treated plate is complicated and can have a natural deep appearance represented by fired bricks and natural stones. In the present invention,
After each of the above steps, it is preferable to perform clear coating on the surface of the cement-treated plate in order to protect the surface state of the cement-treated plate subjected to the inkjet coating and the gravure offset printing for a long period of time.

As described above, the ceramic building board formed from the cement-treated board has a more complex and natural depth appearance, and in consideration of the effect of the edge pattern, a plurality of Ceramic building boards can be manufactured in a state where there are few ceramic building boards that have the same appearance but have a slightly different appearance while being harmonized overall. Therefore, for example, when the above-mentioned ceramic building boards are applied to the outer wall of a building, the appearance design of each ceramic building board is slightly different, and the outer wall surface of the building is complicated and natural. It is possible to exhibit a deep appearance design property.

[0026]

BEST MODE FOR CARRYING OUT THE INVENTION The preferred embodiments of the present invention described above will be described. In the first and second inventions, the ink used in the inkjet coating step can be prepared by adding a pigment and a resin in a solvent. Further, it is preferable that the edge portion pattern is generated by aggregating the ink in each of the ink concentration portions to each outer peripheral portion of each of the ink concentration portions (claim 3). In this case, the edge pattern can be easily formed.

Further, as the means for aggregating the ink on the outer peripheral portion of the ink concentration portion, the following means can be used. For example, by increasing the molecular weight of the resin in the ink, the ink after the spray coating is quickly cured, and the ink can be aggregated on the outer peripheral portion. Further, by increasing the concentration of the pigment in the ink, the pigment is made difficult to flow in the solvent in the ink, and the ink can be aggregated on the outer peripheral portion. In this case, by lowering the concentration of the resin, it is possible to form a state in which the pigment is more difficult to flow.

Also, when the ink jet coating is performed, the plate temperature of the cement-based treated plate is set to a temperature equal to or higher than or close to the boiling point of the solvent in the ink, so that the pigment is contained in the solvent in the ink. It is possible to form a state in which the ink does not flow easily and to cause the ink to aggregate on the outer peripheral portion. For example, the plate temperature of the cement-based treated plate is 70 ° C.
The above can be applied, and a solvent having a boiling point of 20 to 60 ° C. can be used as the solvent.

Further, the solvent in the ink can be quickly evaporated by bringing a heating plate heated to a temperature of 50 to 200 ° C. close to an ink concentrated portion which has not been dried by spray coating of the ink. The ink can be aggregated on the outer peripheral portion. Also, by spraying the ink onto the ink concentrated portion which has not been dried yet and applying hot air or normal temperature air, the solvent in the ink is quickly evaporated, and the ink is condensed on the outer peripheral portion. Can be made.

The thickness of the ink paint in the gravure offset printing layer or the overlapping gravure offset printing layer is preferably 160 μm or less (claim 4). In this case, the change in the thickness of the ink paint can be easily formed. The thickness of the ink paint is preferably 1 μm or more in view of the performance of the printing roll that performs the gravure offset printing.

In the second aspect of the present invention, it is preferable that, in the ink jet coating step, 10 to 30 kinds of design patterns are applied to the cement-based treated plate depending on the difference in the plurality of ink concentrated portions. 5).
In this case, it is possible to prevent the design pattern from being small and not exhibiting a random appearance design property, or the design pattern being too large to complicate the inkjet coating apparatus. Therefore, it is possible to manufacture a plurality of ceramic building boards that exhibit a random appearance and design without complicating the inkjet coating device.

If the number of design patterns is less than 10, the effect of exhibiting the random appearance design property may be reduced. On the other hand, the design pattern is 30
If the number of types exceeds the above range, the inkjet coating device may be complicated and the program for setting the design pattern may be complicated.

Further, it is preferable that the gravure offset printing step is performed by using two to four printing rolls (claim 6). In this case, deep printing can be performed without complicating the printing machine that performs the gravure offset printing. When the number of the printing rolls is 5 or more, the printing machine for the gravure offset printing may be complicated.

Further, in the gravure offset printing step, the printing performed by associating the printing positions of the one cement-based treated plate with respect to the design convex surface with each other is preferably performed by rotating the respective printing rolls in synchronization with each other. (Claim 7). In this case, it is possible to easily perform the printing in which the printing positions are associated with each other by the synchronous rotation of the printing rolls. Therefore, it becomes easy to print the pattern patterns of the printing rolls with almost no deviation. Further, it becomes easy to intentionally shift each pattern of each printing roll to perform printing. Further, by the synchronous rotation, for example, the printing by the printing roll of the present stage can be performed even before the printing by the printing roll of the preceding stage is completed, and the gravure offset printing process can be shortened.

[0035]

Embodiments of the present invention will be described below with reference to the drawings. (Example 1) In the method for coating a ceramic building board of this example, in order to form a ceramic building board 1 (see FIG. 10) that has an appearance with a natural depth, devise of the cement-treated plate 2, Ingenuity of inkjet painting and gravure offset printing are being done.

That is, in this example, as shown in FIG.
A plurality of types of cement-based treated plates 2 are formed by applying a sealer liquid as a base treatment to a plurality of types of cement-based base plates 20, and as an undercoat, applying an undercoat color and a joint color of the ceramic building board 1. . Further, in this example, as the intermediate coating, the base color of the design convex surface 21 is applied to each design convex surface 21 of each cement-based treated plate 2. Next, the above-mentioned plurality of types of cement-based treated plates 2 are subjected to ink-jet coating on which a plurality of types of design patterns are applied and dried.
Gravure offset printing is performed using the printing roll 40 of the table and dried. Then, after that, clear coating is performed to manufacture a plurality of types of ceramic building boards 1.

Specifically, in the preparation process, as shown in FIG.
As shown in FIG. 3, a cement-based treatment plate 2 having a large number of design convex surfaces 21 each having a plurality of patterns 211 and having a large number of minute irregularities 212 formed on each design convex surface 21 is prepared. In addition, a plurality of types of the cement-based treated plate 2 are formed in such a manner that the pattern shapes 211 of the large number of design convex surfaces 21 are slightly different from each other.

Next, in the ink jet coating process, as shown in FIGS.
At least a part of the design convex surface 21 is spray-coated with two rows of inks 300, 301 for forming a design pattern of two colors by inkjet coating in two rows, and the inks 300, 301 are provided at the aimed positions. A plurality of ink concentrating portions 201 in which the ink is concentrated are formed. And each ink concentration part 2
The pigments in the inks 300 and 301 in No. 01 are aggregated on the outer peripheral portions 202 of the respective ink concentration portions 201 so that the outer peripheral portions 202 are formed on the at least some of the design convex surfaces 21.
The edge pattern 213 in which the thicknesses of the inks 300 and 301 in FIG.

Further, the above-mentioned plural types of cement-based treated plates 2
For this, a plurality of types of design patterns are applied depending on the plurality of ink concentrating portions 201 that have generated the edge portion pattern 213. Next, in the drying step, the ink 30 spray-coated on at least a part of the design convex surface 21 is used.
Dry 0,301.

Next, in the gravure offset printing process, as shown in FIGS. 5, 9 and 10, for design including the design convex surface 21 having a plurality of ink concentration portions 201 in which the edge pattern 213 is generated. The ink paint 400 for forming a pattern is printed on the entire convex surface 21 by gravure offset printing.

Further, in this gravure offset printing, a plurality of printing rolls 40 are brought into contact with the entire design convex surface 21 and each pattern 41 of each printing roll 40 is contacted.
Print 1,412. At this time, each pattern 411, 41
The printing of No. 2 is performed by associating the printing positions of the respective pattern patterns 411, 412 with respect to the entire design convex surface 21 on one cement-based treatment plate 2 with each other. Then, an overlapping gravure offset printing layer 216 having a changed thickness is formed on the entire design convex surface 21.

After each of the above steps, in the clear coating step, clear coating is applied to the surface of the cement-based treated plate 2 on which the ink jet coating and the gravure offset printing have been performed, and the cement-based treated plate 2 is applied to the ceramic construction. The board 1 is manufactured.

This will be described in detail below. First, a method for manufacturing the cement-based treated plate 2 will be described as the preparation step. That is, a cementitious raw material (cement, silicic acid raw material, etc.) is mixed with a woody raw material (wood fiber, wood chips, etc.), chemicals, water, etc. to make a mixed raw material, and this is sprinkled on a molding plate of a molding die and molded. (Forming). Further, the above-mentioned molding die has a mold pattern that allows molding of the cement-based original plate 20 in which the design shapes of the large number of design convex surfaces 21 are slightly different.

The four types of cement-based base plates 20 formed by curing and curing by the above-mentioned mold have the number of the design convex surfaces 21, the pattern shape 211 and the arrangement state, and the number of the minute irregularities 212, the size, The arrangement state and the pattern pattern on the front surface due to the large number of minute irregularities 212 are different from each other, and each has a slightly different appearance.

Further, the four types of cement-based raw plates 20 that have undergone the forming and curing are mass-produced, and it is not necessary to distinguish and handle the four types in the steps after the above-mentioned forming. That is, these four types of cement-based original plates 20 are all used for the same product, and the subsequent steps are intentionally performed by mixing the four types.

As shown in FIGS. 2 and 3, the cement-based original plate 20 formed in the above-mentioned preparation step has a large number of design convex surfaces 21 formed of the plurality of types of handle shapes 211 protruding from the surface thereof. In addition, a large number of minute irregularities 212 are formed on the surface of the design convex surface 21. Each design convex surface 21 has a height in which the concave portions of the minute irregularities 212 are partially deep. Is not constant.
In this example, the minute irregularities 212 have a diameter or width of 0.
Dotted or linear depressions having a depth of 1 to 3 mm and a depth and a length of 1 to 15 mm are formed.

The pattern shape 211 forms the outer shape of the design convex surface 21, and the outer shape changes irregularly. Further, on the surface of the cement-based original plate 20, a portion where the design convex surface 21 is not formed is recessed in a groove shape to form a joint portion 22. As described above, the plurality of design convex surfaces 21 have a tile-like, brick-like, or masonry-like appearance divided into a plurality as a whole, although the respective pattern shapes are irregularly collapsed.

Next, as a pre-coating step, the above-mentioned four types of cement-based base plates 20 are coated with a sealer liquid as a base treatment, a base coat color is coated as a base coat, and a joint color coat of the ceramic building plate 1 is coated. Four types of cement-based treated plates 2 are formed. Further, in this example, as the intermediate coating, the base color of the design convex surface 21 is applied to each design convex surface 21 of each cement-based treated plate 2.

In this example, the first cement-based treatment plate 2 which is one of the above-mentioned four types of cement-based treatment plates 2 was subjected to an ink jet coating process, a gravure offset printing process and the like. In FIG. 2, FIG. 3, FIG. 6 to FIG. 12, the second cement-based treatment plate 2 which is another type is illustrated and explained in FIG. (FIG. 16).

Next, as shown in FIG. 4, in the ink jet coating process, the ink tanks 33 and 34 holding the inks 300 and 301 for forming the two-color edge pattern are formed.
And the ink 3 sent from the ink tanks 33 and 34
Coating heads 31 and 32 for coating 00, 301 on the convex surfaces 21 for design of the cement-based treatment plate 2, a conveyor 35 for conveying the cement-based treatment plate 2 to the coating heads 31 and 32, and the coating An inkjet coating device 3 having a control device 36 for controlling coating by the heads 31 and 32 is used. In this example, the white ink 300 is used in the ink tank 33, and the brown ink 301 is used in the ink tank 34. Each of the inks 300 and 301 is prepared by containing a pigment and a resin in a solvent.

Further, the coating heads 31 and 32 are provided with a large number of jet nozzles 311 and 321. The control device 36 controls the opening and closing of the large number of jet nozzles 311 and 321. In this example, the design pattern spray-painted on the cement-based treated plate 2 is composed of a plurality of spray nozzles 311 and 321 selected from the spray nozzles 311 and 321 according to the design pattern. It is determined by the settings such as. Then, by this, the spray coating is performed on the aimed position on the design convex surface 21 of the cement-based treated plate 2, and the plurality of ink concentrating portions 201 can be formed at the aimed positions. In this example, spray coating of a plurality of types of patterns can be performed without complicating the inkjet coating device 3.
20 kinds of design patterns are stored in the control device 36.

In the above ink jet coating process,
The four types of cement-based treated plates 2 are irregularly transported to the inkjet coating device 3. Then, in the inkjet coating device 3, the control device 36 selects any one of the 20 types of design patterns, and the plurality of injection nozzles 311 and 321 in the coating heads 31 and 32 are used to control the cement system. Inkjet coating is applied to a large number of design convex surfaces 21 of the processing plate 2. Therefore, at the time of carrying out the steps up to this point, the cement-based treated plate 2 has already been formed into a type that is simply the product of the four types of the cement-based treated plate 2 and the 20 types of the design patterns, that is, 80 types of the cement-based treated plate 2.

Then, as shown in FIG. 7, in the ink jet coating step, the inks 300, 30 are applied to at least a part of the design convex surface 21 of the cement-based treated plate 2.
1 is spray coated to form a plurality of ink concentration portions 201.
Then, as shown in FIGS. 6 and 8, the pigments in the spray-coated inks 300 and 301 are the same as those in the inks 300 and 3.
It tries to flow so as to spread radially in the solvent in 01. However, by forming a state in which the pigment in the inks 300 and 301 is hard to flow, the ink 30
The pigments in Nos. 0 and 301 cannot spread from the outer peripheral portion 202 of the ink concentration portion 301, and the outer peripheral portion 20
Then, the edge pattern 213 is formed. In addition, as the pigments agglomerate, the solvent in the inks 300 and 301 evaporates.

In this example, the inks 300, 30
In order to form a state in which the pigment in 1 does not easily flow, the viscosity of the inks 300 and 301 is increased by increasing the molecular weight of the resin contained in the inks 300 and 301. When performing the inkjet coating, the plate temperature of the cement-based treated plate was set to about 70 ° C., and a low boiling point type solvent (a solvent having a boiling point of 20 to 60 ° C.) was used as the solvent.

FIG. 11 shows an ink concentrating portion 20 made of the inks 300 and 301 that are spray-painted on the design convex surface 21.
1, the ink 300, 301
2 schematically shows how an edge pattern 213 having an increased thickness is generated. As shown in the figure, the ink concentration portion 201 formed immediately after the spray coating was formed in a mountain shape, and its diameter D1 was about 1.2 mm. Then, the solvent in the inks 300 and 301 evaporates, and the inks 300 and 30 are collected in the ink concentrating portion 201.
Edge pattern 2 by pigment 302 and resin 303 in 1
13 is formed. Then, the ink concentration part 2 at this time
The diameter D2 of 01 was about 3 mm.

The edge portion pattern 213 has the outer peripheral portion 202.
Has a large thickness t1 (thickness of 30 to 50 μm in this example) and a small thickness t2 of the inner portion 209 surrounded by the outer peripheral portion 202 (thickness of 1 to 30 μm in this example). Was done. Then, the outer peripheral portion 202 forms a portion 203 having a dark color due to the inks 300 and 301,
The inner portion 209 forms a portion 204 that is light in color due to the inks 300 and 301.

As described above, the edge pattern 213 is positively generated in the vicinity of the aimed position where the ink 300, 301 is spray-painted to form a complicated design pattern close to a natural pattern. be able to. In addition, as shown in FIG. 8, the plurality of ink concentrating portions 201 formed with the edge portion pattern 213 are not only formed individually, but also adjacent ink concentrating portions 201 are connected to each other, and It is possible to form a complicated design pattern.

Next, after the ink-jet coating is performed, as a drying step, the inks 300 and 301 on which the large number of design convex surfaces 21 are spray-coated are dried. Further, the occurrence state of the edge portion pattern 213 differs depending on the surface state of the design convex surface 21, so that the edge portion pattern 213 has a different design pattern for each design convex surface 21.

Next, as shown in FIG. 5, in the gravure offset printing process, in this example, two printing rolls 40 are provided in order to perform deep printing without complicating the gravure offset printing process. The gravure offset printing machine 4 is used. Then, each printing roll 40
Are gravure roll 41 and offset roll 4 respectively.
2 and each of the above pattern patterns 411, 4
12 is a gravure roll 41 in the first-stage printing roll 401 (40) and a second-stage printing roll 40, respectively.
It is formed on the gravure roll 41 in 2 (40).

In each of the printing rolls 40, unnecessary ink paints 440 and 44 of the ink paints 440 and 441 attached to the outer peripheral surface 410 of the gravure roll 41 having the pattern 411 or the pattern 412 are used.
1 is scraped off by a doctor blade 45 described later. Then, in each printing roll 40, each pattern 41
Ink paint 44 accumulated in the cells forming 1,412
0,441 is the outer peripheral surface 420 of each offset roll 42
Ink paint 440, 441 transferred to
Is printed on each design convex surface 21 of the cement-based treated plate 2.

Each of the printing rolls 40 has a gravure roll 41 having a pattern 411 or a pattern 412, and an offset roll 42 arranged in contact with the gravure roll 41. Further, a conveyor 43 is arranged so as to face the first-stage offset roll 42 and the second-stage offset roll 42, and the cement-based treatment plate 2 is provided between each offset roll 42 and the conveyor 43. It is sandwiched between and is pressed against each offset roll 42. Then, the cement-based treatment plate 2 is conveyed by the conveyor 43 to the first-stage printing roll 401 and the second-stage printing roll 402.

The printing rolls 40 store the ink paints 440, 441 and store the gravure rolls 4 in the printing rolls 40.
It has an ink paint supply part 44 for adhering to the outer peripheral surface 410 of No. 1 and a doctor blade 45 for scraping off the unnecessary ink paint 440, 441 adhering to the outer peripheral surface 410. Each printing roll 40 has a cleaning roll 46 for cleaning the outer peripheral surface 420 of the offset roll 42, and a doctor blade 47 for scraping off the ink paint 440, 441 transferred to the cleaning roll 46. There is.

In this example, the pattern 411 on the first gravure roll 41 and the pattern 412 on the second gravure roll 41 are different from each other.
Ink paint 440 used for the gravure roll 41
And ink paint 4 used for the second gravure roll 41
41 are different from each other in color and component. In this example, a yellowish bright color is used for the ink paint 440 used for the first gravure roll 41, and a dark brownish color is used for the ink paint 441 used for the second gravure roll 41.

Further, the printing rolls 40 in the gravure offset printing machine 4 are configured to operate in synchronization with each other, and the gravure rolls 41, the offset rolls 42 and the conveyor 43 rotate in synchronization with each other. . As a result, the printing by the second printing roll 402 can be performed even before the printing by the first printing roll 401 is completed, and the gravure offset printing process can be shortened. Is.

The pattern patterns 411 and 412 on each of the gravure rolls 41 are formed by a plurality of cells formed on the outer peripheral surface 410 of each gravure roll 41. And, the plurality of cells is 100 per 2.54 cm.
.About.200 lines, and the depth changes in the range of 1 to 80 .mu.m. Further, the pattern pattern 411 of the first-stage gravure roll 41 and the pattern pattern 4 of the second-stage gravure roll 41
12 is due to the arrangement of the plurality of cells, the change in the number, etc.
Different from each other.

In this example, the gravure rolls 41 and the offset rolls 42 of the printing rolls 40 have the same outer diameter. Therefore, the gravure rolls 41 and the offset rolls 42 have the same outer peripheral length, and the pattern pattern 411 of the first stage is always applied to any cement-based treatment plate 2.
It is possible to match the print start positions of the second pattern pattern 412 with the above.

That is, in this example, the origin position which is the formation start position of the design pattern 411 on the outer peripheral surface 410 of the first gravure roll 41 and the gravure roll 4 of the second tier.
The origin position which is the formation start position of the pattern 412 on the outer peripheral surface 410 of 1 is always one cement-based treatment plate 2
Then, the image is transferred to almost the same position, and printing is performed.
Further, in this example, since the length in the printing direction of the cement-based treatment plate 2 is longer than the outer peripheral length of each offset roll 42,
The respective origin positions are repeatedly transferred to respective positions on the cement-based treatment plate 2 to repeatedly form the superimposed gravure offset printing layer 216 on the cement-based treatment plate 2.

In this way, in this example, the printing position of the design pattern 411 on the first stage and the printing position of the design pattern 412 on the second stage are printed on the design convex surface 21. Print so that there is almost no misalignment by setting the start positions of the above to be almost the same. Specifically, printing was performed while allowing an error within ± 1 mm.

The starting positions of printing the first-step pattern pattern 411 and the second-step pattern pattern 412 can be intentionally shifted by a predetermined length (for example, 20 to 30 cm). . That is, in this case, the origin position of the pattern 411 on the outer peripheral surface 410 of the first-stage gravure roll 41 and the outer peripheral surface 41 of the second-stage gravure roll 41.
The origin position of the pattern pattern 412 at 0 is always shifted by a predetermined length and transferred onto one cement-based treatment plate 2 for printing.

In the gravure offset printing process, the design convex surface 21 including the design convex surface 21 having the plurality of ink concentration portions 201 in which the edge pattern 213 is generated is used to form a pattern pattern. Ink paint 44
0,441 is printed by the gravure offset printing machine 4 using the two printing rolls 40. Then, the pattern 411 of the first-stage printing roll 401 forms the first-stage gravure offset printing layer 214 in which the thickness of the ink paint 440 is changed, and the pattern 412 of the second-stage printing roll 402 A second gravure offset printing layer 215 in which the thickness of the ink paint 441 is changed is formed.

FIG. 9 shows a state in which the first stage gravure offset printing layer 214 is printed on the cement type treated plate 2 by the first stage printing roll 401. The gravure offset printing layer 214 is the gravure roll 41.
The ink paint 440 held in a plurality of cells forming the pattern pattern 411 is formed by a plurality of dots transferred. Then, a dark color portion 205 is formed where the dot thickness is large, and a light color portion 206 is formed where the dot thickness is small, and a gravure offset printing layer having a light and shade of color (or light and dark) is formed. It forms 214.

Further, FIG. 10 shows that the gravure offset printing layer 215 of the second stage is formed by the printing roll 402 of the second stage.
Shows the printed state. The gravure offset printing layer 215 is also formed by a plurality of dots, like the gravure offset printing layer 214. Then, a dark color portion 207 is formed where the dot thickness is large, and a light color portion 208 is formed where the dot thickness is small, and a gravure offset printing layer having a shade (or light and shade) of color is formed. 215 is formed. Then, the combination of the first-stage gravure offset printing layer 214 and the second-stage gravure offset printing layer 215 forms a superimposed gravure offset printing layer 216 in which more complex shades of color (or light and dark) are formed. Has been done.

As shown in FIG. 12, each of the design convex surfaces 21 of the cement-based treated plate 2 formed by combining the ink jet coating and the gravure offset printing has the thickness and forming position of the plurality of ink concentration portions 201, Various design patterns are formed by the difference in the thickness and formation position of the gravure offset printing layers 214, 215. For example, each design convex surface 21 is a portion where the ink concentration portion 201 and the gravure offset printing layers 214 and 215 are overlapped, a portion where only the ink concentration portion 201 is formed, and the gravure offset printing. Layer 21
4, 215 only, the ink concentration portion 2
01 and each of the gravure offset printing layers 214, 21
5 has various appearances, such as a portion where the background color is visible without being formed.

Further, each of the gravure offset printing layers 2 described above
14, 215 are formed such that the thickness of the plurality of dots forming the dots 14 and 215 varies in the range of 1 to 160 μm. The dark-colored portions 205 and 207 have a thickness of 40 to 80 μm, and the light-colored portions 206 and 208 have a thickness of 1 to 20 μm.

In the portion where the gravure offset printing layers 214 and 215 are formed so as to overlap the ink concentrating portion 201, the thickness of the ink concentrating portion 201 and the thickness of the gravure offset printing layers 214 and 215 are Due to the above relationship, the ink concentration portion 201 may not be seen at all or may be seen through thinly. As mentioned above, the above-mentioned cement-based treated plate 2 has various design patterns.
Each of the design convex surfaces 21 can have an appearance with a natural depth represented by a fired brick, a natural stone or the like having a slight difference in lightness and darkness (see FIG. 10).

The first gravure offset printing layer 214 and the second gravure offset printing layer 2
The reference numeral 15 is formed in almost the same manner for any cement-based treatment plate 2. In addition, after the gravure offset printing is performed, the ink paint 44 on which the printing is performed is performed.
Dry 0,441.

After each of the above steps, a clear coating is applied to the surface of the cement-based treated plate 2 in the clear coating step. Thereby, the surface state of the cement-based treated plate 2 coated and printed as described above is protected for a long period of time.
In this way, the ceramic building board 1 is manufactured from the cement-treated board 2.

The design convex surface 21 of the ceramic building board 1 after each of the above-mentioned steps is overlapped with the background color by the intermediate coating, the ink color by the ink jet coating and the ink paint color by the gravure offset printing. ，
The natural deep appearance can be exhibited. In this example, the design convex surface 21 has a natural stone-like appearance due to the yellow or brown base color, the ink color, and the ink paint color. Further, the joint portion 22 in the ceramic building board 1 has an appearance like a mortar connecting the pseudo natural stones by the design convex surface 21 with the gray joint color.

Ceramic-based building board 1 formed as described above
Has a complex and natural deep appearance, and is formed into 80 types. Moreover, considering the effect of the edge pattern 213, a plurality of ceramic-based building boards 1 have a fixed gravure offset printing layer 216. Despite being repeatedly formed on the pitch, ceramic-based building board 1 that has a slightly different appearance while showing overall harmony, and the same appearance
It can be manufactured in a state where there is almost no. Therefore, for example, when the plurality of ceramic-based building boards 1 are applied to the outer wall of a building, the appearance and design of each ceramic-based building board 1 is slightly different, and the outer wall surface of the building is natural. It is possible to exhibit a deep appearance design property.

(Embodiment 2) In this embodiment, the second cement-based treated plate 2 (see FIG. 13), which is another one of the four types of cement-based treated plates 2 described in the above-mentioned Example 1, is used. This is an example of performing the inkjet coating process and the gravure offset printing process. Also,
For the second cement-based treated plate 2 of this example, inkjet coating is performed with a design pattern different from that of the first cement-based treated plate 2 shown in the first embodiment to form a plurality of ink concentrated portions 201. Then, an edge pattern 213 was generated (see FIG. 14).

Then, as in the first embodiment,
Gravure offset printing is performed, and the gravure offset printing layer 21 in the first stage is printed by the printing roll 401 in the first stage.
4 (see FIG. 15), and the second printing roll 4
02, the second gravure offset printing layer 215 was printed, and the overlapping gravure offset printing layer 216 was printed (see FIG. 16). Others are the same as those in the first embodiment.

As described above, the ceramic building board 1 (FIG. 10) shown in the first embodiment and the ceramic building board 1 shown in this example.
As can be seen from (FIG. 16), when two types of ink jet coating are applied to the two types of cement-based treated plates 2, a total of four types of ceramic building plates 1 can be manufactured. Similarly, if 20 kinds of ink-jet coating are applied to 4 kinds of cement-based treated boards 2, a total of 80 kinds of ceramic building boards 1 can be manufactured.

[Brief description of drawings]

FIG. 1 is a flowchart showing a method for manufacturing a ceramic building board according to a first embodiment.

FIG. 2 is a plan view showing a first cement-based original plate in Example 1.

FIG. 3 is a perspective view showing a first cement-based original plate in Example 1.

FIG. 4 is an explanatory diagram showing an inkjet coating device according to the first embodiment.

FIG. 5 is an explanatory diagram showing a gravure offset printing machine having two printing rolls according to the first embodiment.

FIG. 6 is a plan view showing a state in which inkjet coating is applied to the first cement-based treated plate in Example 1.

FIG. 7 is a plan view showing a state in which a plurality of ink concentrated portions are formed by spray-painting ink on the design convex surface by inkjet coating in Embodiment 1.

FIG. 8 is a plan view showing a state in which an edge portion pattern is generated in each of a plurality of ink concentration portions on the design convex surface in the first embodiment.

FIG. 9 is a plan view showing a state in which the first stage gravure offset printing is performed on the first cement-based treated plate in Example 1.

FIG. 10 is a plan view showing a state in which the second stage gravure offset printing is performed on the first cement-based treated plate in Example 1.

FIG. 11 is an enlarged cross-sectional explanatory view showing a state in which an edge portion pattern is generated in the ink concentration portion in the first embodiment.

FIG. 12 is an enlarged cross-sectional explanatory view of the design convex surface of the cement-treated plate obtained by combining inkjet coating and gravure offset printing in Example 1.

FIG. 13 is a plan view showing a second cement-based raw plate according to the second embodiment.

FIG. 14 is a plan view showing a state where the second cement-based treatment plate in Example 2 is subjected to inkjet coating.

FIG. 15 is a plan view showing a state where the first stage gravure offset printing is performed on the second cement-based treated plate in Example 2.

FIG. 16 is a plan view showing a state in which a second stage gravure offset printing is performed on the second cement-based treated plate in Example 2.

[Explanation of symbols]

1. ． ． Ceramic building board, 2. ． ． Cement-based processing board, 20. ． ． Cement base plate, 21. ． ． Convex for design, 211. ． ． Handle shape, 212. ． ． Minute unevenness, 201. ． ． Ink concentration part, 213. ． ． Edge pattern, 216. ． ． Overlaid gravure offset printing layer, 3. ． ． Inkjet coating equipment, 300, 301. ． ． ink, 4. ． ． Gravure offset printing machine, 40. ． ． Printing roll, 440,441. ． ． Ink paint, 41. ． ． Gravure roll, 411, 412. ． ． Pattern, 42. ． ． Offset roll,

Front page continuation (51) Int.Cl. ⁷ identification code FI theme code (reference) B05D 5/06 101 B05D 5/06 101Z 7/00 7/00 L B41M 1/10 B41M 1/10 F term (reference) 2H113 AA01 BA03 BA05 BA27 BB01 BB22 CA05 DA01 4D075 AC07 AC25 AC92 AE03 CA35 CA47 CB06 CB21 CB36 DA06 DA07 DB12 DC02 DC03 EA33 EA43 4F040 AA01 AA19 AC04 BA12 BA26 CB06 CB37

Claims (7)

[Claims] 1. A plurality of ink-jet-printed inks for forming a design pattern are spray-coated on a target position on at least a part of the surface of a cement-based treated plate, and the ink is concentrated on the target position. And an ink-jet coating process for forming an edge pattern with an increased ink thickness on each outer peripheral portion of each ink concentration part, and a plurality of inks having the edge pattern. A gravure offset that forms a gravure offset printing layer in which the thickness of the ink paint is changed by printing gravure offset printing with an ink paint for forming a pattern on the entire plate surface having a concentrated portion A method for coating a ceramic building board, which comprises performing a printing process. 2. A preparatory step of preparing a cement-based treated plate having a convex surface for design with minute irregularities formed on the surface of the plate, and forming a design pattern by inkjet coating on the convex surface for design of the cement-based treated plate. The ink is spray-painted on the target position to form a plurality of ink concentration parts where the ink is concentrated on the target position, and the ink thickness increases at each outer peripheral part of each ink concentration part. Inkjet coating process for generating an edge pattern and an ink coating for pattern pattern formation are printed by gravure offset printing on the design convex surface having a plurality of ink concentration parts where the edge pattern is generated. At the time of gravure offset printing, a plurality of printing rolls are brought into contact with the convex surface for design to print each pattern pattern of each printing roll,
Further, the printing of the respective pattern patterns is performed by associating the printing positions of the respective pattern patterns with respect to the design convex surface of one cement-based treated plate with each other, and the overlapping gravure in which the thickness of the ink paint is changed on the design convex surface. A gravure offset printing process for forming an offset printing layer, and a method for coating a ceramic building board. 3. The ceramic structure according to claim 1, wherein the edge pattern is generated by causing ink in the ink concentration portions to aggregate on outer peripheral portions of the ink concentration portions. How to paint the board. 4. The method according to claim 1, wherein
The thickness of the ink paint in the gravure offset printing layer or the overlapping gravure offset printing layer is 160 μm.
A coating method for a ceramic building board, which is characterized in that it is m or less. 5. The method according to any one of claims 2 to 4,
A coating method for a ceramic building board, characterized in that, in the ink jet coating step, 10 to 30 types of design patterns are applied to the cement-based treated board depending on the difference in the plurality of ink concentrated portions. 6. The method according to any one of claims 2 to 5,
The gravure offset printing process is performed by using 2 to 4 printing rolls. 7. The method according to any one of claims 2 to 6,
In the gravure offset printing step, the printing performed by associating the printing positions on the design convex surface of one cement-based treated plate with each other is performed by rotating the respective printing rolls in synchronization with each other. How to paint the board.