JPH10109377A - Decorative board with transfer printed part, coating roll and pressing roll for transfer for device for manufacturing the decorative board, and peeling of transfer film - Google Patents

Abstract

PROBLEM TO BE SOLVED: To exhibit natural feeling and improve the weather resistance by forming a paint layer on a base with the surface form of a natural material or a ceramic material embossed as a pattern and transfer-printing a figured design as a pictorial pattern on the upper face of the paint layer. SOLUTION: A mixture of colored pain and a hollow ceramic aggregate as an inorganic particulate material is applied by a spray gun to the entire surface of a sandstone-textured embossed plate 1 with the surface form of a sandstone embossed as a pattern. In addition, the coat is dried by hot blast and a paint layer 4 is formed on the surface of a base material 1 to obtain a sandstone-textured feeling as a sandstone-textured base. Next, a film 6 for thermal transfer consisting of a peelable varnish layer, a pictorial pattern layer and an adhesive layer laminated sequentially on vinyl chloride film 6a is deposited on the device, and a silicone roll is heated and further, an interval between the silicone roll and a backing roll is adjusted to heat the surface of the sandstone-textured base which is already through a coating step. In addition, a pictorial pattern is thermally transferred by allowing the silicone roll to pass by. After that, the film 6 for thermal transfer is peeled to obtain a sandstone- textured printed decorative board 9 with a transfer printed part 6b.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a decorative plate mainly used for building materials on which a pattern has been formed by transfer printing, and a coating roll, a transfer pressure roll and a transfer film peeling method in a method or an apparatus for producing the decorative plate. It is about.

[0002]

2. Description of the Related Art Decorative boards for construction are often used for wall surfaces of buildings. In the old days, mortar was painted on the base of mortar and used as decorative walls. A so-called dry construction method in which a decorative board, which has been completely painted and painted in a factory after being cut into a predetermined size for construction, is brought to the site is mainly used. Ceramic or metal siding boards are used as the substrate, and the surface of the substrate is generally a smooth surface shape.However, in order to make the image of a natural material, from the imitation of a small uneven surface or a broken surface There are many types, such as brick-like ones with grooves. In the field of cosmetic technology, the base material surface is covered with paint to improve the weather resistance of the substrate, but the coating machine used is basically a roll coater, flow coater,
Because they are spray guns and the like, makeup methods using them are often restricted. If the decorative surface is highly designable, the uneven surface of the base material surface can be applied to the low and high areas by using the difference in height, or the paint can be mixed with the aggregate to give a lysine-like appearance. Stucco-like, which is granulated and sprayed on the surface, has occupied the mainstream. In recent years, a more delicate pattern has been required, and a decorative plate in which the pattern is applied to a surface substrate by transfer printing has been required. Transfer printing is generally applied to substrates with smooth surfaces and is used for interior materials, but when used for exterior materials, it is not yet used on substrates with rough surfaces as described above. Since it is necessary to apply this and high weather resistance is required, a new transfer technique for this purpose is required for the exterior material. On the other hand, even if a decorative method with high designability is adopted, if the decorative surface deteriorates and the necessity of repainting arises after applying the decorative board to the building, the pattern and hue are reproduced in the original state It is difficult to do. This is because the cosmetic method for high design is implemented through a number of processes using special machines in factory production. For these reasons, the weatherable service life of the decorative part is required to be equivalent to the service life of the building.

[0003]

The problem to be solved is to form a pattern on a ceramic or metal substrate having a rough surface or a rough surface covered with particulate matter, and to provide a weather resistant material having a natural texture. It is to provide a high decorative board.

[0004]

SUMMARY OF THE INVENTION The present invention provides at least two
It has a step height difference and is entirely made of natural material or brick,
A paint layer is formed on a ceramic or metal substrate in which the surface shape of a ceramic material such as a tile is raised as a pattern, and the pattern that characterizes the material is transferred and printed as a pattern on the upper surface, making it more natural This gives a decorative plate having a transfer printing part by giving a good texture.

[0005] The coating layer has a particle size of 20 to 300 µm.
By adding inorganic particles of m, a more natural texture is added. As the inorganic particulate material, natural stones or bricks crushed or produced, ceramic fine particles, sand or the like is used.

The picture to be transferred is photolithographically made as a brick pattern including stone patterns, burrows and dirt peculiar to bricks, as well as contaminants.

A ceramic or metal siding material is used as a substrate, and an undercoat layer of a different color is partially provided on the surface of the substrate, and a transfer film on which only a pattern is printed is used on the upper surface of the undercoat layer. In this way, the background color can be made transparent so as to give a color change to the picture of the same color.

The hue of the undercoat layer transferred using the transfer film on which only the pattern is printed is a color similar to the hue of the ink, and the brightness (based on JIS Z8721) is at least two levels brighter. The use of clarifies the picture and gives deep vision.

Further, the ink layer constituting the transfer printing portion is covered with a top coat layer, and the top coat layer is constituted so as to be adhered by chelate bonding to form a decorative plate having high weather resistance against high energy rays and temperature changes. I have.

[0010] Further, beads having a particle size of 20 to 300 µm are blended with a clear coating material for forming a top coat layer to form a matte state, thereby reducing defects when a decorative plate is bonded and improving scratch resistance. The compounding ratio is preferably 1 to 10% by weight relative to the clear paint.

[0011] A coating roll in the apparatus for manufacturing a decorative board, wherein a soft material such as sponge rubber is formed on a surface of a cylindrical core material as a first layer, and a non-porous rubber material harder than the first layer is formed on the surface. In a roll composed of a layer as a second layer, a number of fine holes are provided on the surface of the second layer, the amount of coating is regulated by the volume of the hole, and the substrate surface having a height difference of two or more levels is evenly coated. I did it.

In addition, by forming the non-porous rubber second layer detachably, if a second layer having a different hole size and density is prepared, an appropriate second layer corresponding to the pattern of the substrate can be formed. It can be selected to be a coating roll.

[0013] Further, a transfer pressure roll in the apparatus for manufacturing a decorative plate, wherein a plurality of cuts are provided in a direction intersecting with each other on a surface of a rubber roll for pressing and transferring the transfer film. The portions surrounded by the cuts are configured to individually press the transfer film, so that the transfer film is pressed even against a substrate having many steps.

When the film is peeled off after the thermal transfer, the angle α between the pulling-up direction of the transfer film and the substrate surface is set to 90 °.
When the angle is smaller than the degree, the ink layer adhered to the paint layer on the substrate is prevented from being turned up.

As a means for maintaining the angle α at an angle smaller than 90 degrees, a roll is brought into contact with the transferred film, and the film is pulled up along the surface of the roll.

In the peeling of the film when the film is transferred across the groove, the upper surface of the transfer film is heated so that the non-adhered film located above the groove is elongated, and the interface between the adhered portion and the non-adhered portion is stretched. To prevent the ink layer from being turned up carelessly.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described based on embodiments with reference to the drawings. FIG. 1 is a perspective view of a substrate 1 used in the present invention, and shows a sandstone-like embossed plate having a surface shape of sandstone raised as a pattern as an example of a nitrogen-based siding board. Reference numeral 2 denotes an uneven portion caused by embossing, and reference numeral 3 denotes a groove, which is generally called a joint, and is machined. The average thickness of the plate is 16 mm. First, the painting process will be described. A mixture of gray acrylic urethane enamel (Dainippon Paint Co., Ltd.) and hollow ceramic lightweight aggregates (Microcells, Chichibu Onoda Co., Ltd., particle size distribution 20-300 μm) as inorganic granules by 10% by weight. Then, the entire surface of the base material is
50 gr / m ² (wet weight) is applied. After drying with hot air for about 15 minutes, a paint layer 4 is formed on the surface of the base material as shown in FIG. 2, and a sandstone-like hand is formed to obtain a sandstone-like substrate 5.

Next, the transfer printing process will be described with reference to FIGS. A thermal transfer film 6 in which a release varnish layer, a picture layer, and an adhesion layer are sequentially laminated on a 80 μm thick PVC film 6 a is placed on a machine, and a silicon roll 7 having a rubber hardness of 40 degrees is placed on the machine.
Is heated to 160 ° C., the distance between the receiving roll 8 and the roll is adjusted to 13 mm, and the surface of the sandstone-like substrate 5 after the above-mentioned coating process is heated to 58 ° C. to 60 ° C. Thermal transfer is performed by passing the sheet at a surface speed of 10 m / min. Thereafter, the film 6 for thermal transfer is peeled off to obtain a sandstone-tone printed decorative board 9 having a transfer print portion 6b. In this case, if the fractured surface of the sandstone is formed into a picture by a photograph, a decorative plate having a high design property can be obtained, and the details of the peeling step will be described later.

Here, the paint layer 4 and the color tone of the picture will be described. When the type of color is objectively specified, it is convenient to use the Japanese Industrial Standard (JIS Z8721).
When expressing a color, it is expressed by being divided into three mutually independent attributes of hue, lightness, and saturation. This is a color display method based on three attributes, with achromatic color as a central axis, hue as a central angle,
This is shown as a color solid in a coordinate system in which saturation is represented by a distance from the center. In the present invention, the color of the paint layer 4 has the same hue and saturation as that of the ink constituting the picture, and the lightness has a difference of at least two steps, thereby realizing the picture with a clear depth. The lightness is based on a perceptually divided interval between black and white indicated by the Munsell Valuau in 10 steps so as to be at equal intervals, and since it is a decimal system, it is easy to specify sensuously.

In the above-mentioned transfer step, the substrate 5 has a surface property which is extremely difficult to transfer, in which uneven surfaces formed by small embosses and fine inorganic particles are mixed. The height difference of the uneven surface of the embossed substrate surface of the ceramic siding board is about 2 mm, the surface hardness of the rubber roll pressing the transfer film is preferably 40 to 50 degrees, and the thickness of the rubber is 5
Made in the range of ~ 25mm. When the substrate surface is flat, the rubber hardness is 30 to 80 degrees, and there is a margin for the hardness to be used. However, at around 30 degrees, the force for pressing the transfer film tends to be insufficient. On the other hand, at around 80 degrees, a substrate with high precision in the smoothness and flatness of the substrate surface is required.

Further, as shown in FIG. 3, in addition to the grooves 3 where the surface of the substrate 1a forms joints, the height differences of the embossed uneven portions 2a are a (14 mm), b (16 mm), and c.
(17 mm) and a case where there are two or more height differences such as d (18 mm) will be described. In addition, in the appearance of the height difference, in addition to the uneven portion 2a formed by imitating the fracture surface of natural stone, a portion where the average thickness of the substrate surface is different, in other words, the unevenness of the plate thickness coexists. However, in the present invention, a height difference of two or more steps including these states is made to correspond. First, the formation of the paint layer 4a on the substrate 1a will be described.

Before the coating layer 4a is formed, the surface of the substrate 1a is entirely coated with a coating for the purpose of coating the joint color, that is, the groove 3, with a spray gun. After drying, the uneven portion having a height difference of two or more steps other than the groove portion 3 is coated, but when a normal sponge rubber roll is used, the receiving roll is so contacted that the roll surface comes into contact with the lowest portion of the substrate. Must be determined. In this state, when the coating is actually performed, the lower portions of the substrate are normally coated, but the higher portions are easily observed to be supplied with an abnormally large amount of the coating. This is because the sponge roll is subjected to abnormal pressure at high places on the substrate and the impregnated paint flows out. In consideration of this state, the present invention uses the following application roll.

FIG. 4 is a sectional view of the coating roll 5. The center of the application roll 10 is an iron core 11 having a hardness of 20 on its surface.
A sponge rubber layer 12 of about 30 degrees is provided, and a nonporous rubber layer 13 is further formed thereon. Many small holes are provided on the surface of the nonporous rubber layer 13. Hole density is 1cm
They are arranged at equal intervals, such as 10, 13, 18, 20, and 25 in width. The size and depth of the hole differ depending on the amount of paint applied and the shape and height difference of the uneven portion on the substrate surface, but as a general purpose, the hole diameter is 0.1 to 0.5 mm and the depth is 0.2. Good results have been obtained in the range of 0.6 mm.
The properties of this roll are considered as follows. FIG. 5 schematically shows a state in which the surface of a substrate 1a having two or more levels of height difference and a slope 14 is painted on a roll. The sponge rubber layer 12 has a configuration in which the hardness is 25 degrees and is soft and the rubber layer 13 is 50 degrees and the thickness is hard to change. It is shown. It is the sponge layer that compresses and deforms along the substrate 1a, and the repulsive force increases in proportion to the amount of change.
However, since the paint is held only in the hole 15, the situation where the applied amount is abnormally large is avoided. In this example, the application status was examined for the height differences b, c, and d (FIG. 3). Was. Also,
It was painted despite the slope being 45-80 degrees. FIG. 7 shows a state in which the slope 14 is coated with a general sponge roll 16. The surface of the sponge is lacquered on the slope 14 and stretched, but the shrinking force acts to create a gap 17, which indicates that the sponge cannot be applied.

Also, the recess 1 which is quite steep as shown in FIG.
The roll used in this example can also be used when the height b, c, and d of the convex surface 19 connected to 8 are two or more steps, and the concave portion 18 and the convex portion 19 are to be painted separately. If a roll of only sponge rubber is used, the applied amount becomes abnormally high at a high place (height d), so that it flows into the concave portion 18 and cannot be clearly separated. However, in the roll of the present invention, the applied amount is limited by the volume of the hole 15. Because it is regulated.

As already described in the transfer step, the substrate 5
Is a surface property that is extremely difficult to transfer, with a mixture of small uneven surfaces and fine particle surfaces.However, the use of a thermoplastic PVC film as the transfer film and a large number of This is advantageous in that the cut portion is formed so that the pressure on the roll surface is easily transmitted to the substrate surface.

FIG. 15 is a perspective view of the transfer pressure roll used in the present invention. A sponge rubber layer 41 is provided on the surface of the iron core 40, and the hardness of the rubber is 25 degrees. Further, a silicon rubber layer 42 is provided on the surface. The notch 43 is formed on the surface of the silicon rubber layer. The cut portion 43 may be processed in a direction perpendicular to the axis and in a direction parallel to the axis, or may be helical in a direction crossing each other, but the cut pitch is preferably 1 mm to 5 mm and a depth of 1 mm to 1.5 mm. By making the cuts, island-shaped convex portions 44 of 1 mm square to 5 mm square are continuously provided on the surface of the silicon rubber roll, and the convex portions can independently press the pressing object. If the step of the embossed portion of the substrate 1 is within 2 mm and the inclination angle of the inclined surface 14 is not a right angle, by setting the silicone rubber hardness in the range of 30 to 60 degrees, a transfer surface free from transfer can be obtained.

FIG. 16 is a partially enlarged schematic cross-sectional view showing a state in which the pressure roll of the present invention presses a slope. When the substrate 1 has two levels of heights c and d and has a slope 10 and forms a continuous surface, the pressure applied to each part of the pressure roll is absorbed by the sponge rubber layer 41 and the silicon rubber layer 42 It deforms along the substrate 1 under substantially uniform pressure. Since the island-shaped protrusions 44 generated by the cuts 43 can independently move in the lateral direction, they move to occupy appropriate positions along the slope 10 individually. Strictly speaking, there may be a place where a gap 45 is formed. However, since the protrusions 44 are provided continuously, any one of them presses the place of the gap 45, so that the transfer can be prevented.

The peeling of the transfer film in the groove 3 processed on the substrate is described with reference to FIGS.
As shown in FIG. 1, the lifting speed and the substrate transport speed were adjusted so that the angle α formed between the surface of the substrate 1 and the film to be pulled was smaller than 90 degrees, so that the transfer film peeled off the groove 3. When the transition from the contact area to the non-adhesive area occurs, the tension of the transfer film may be momentarily loosened for a short time, and the transfer film acts to sharply tension when moving to the next contact area. In the portion 20, a strong tensile force acts to break the ink layer of the transfer film. For this reason, the ink layer does not continue to be turned up and the ink layer does not remain in the groove in a bridge shape.
As a result of various tests, when the angle α exceeds 90 degrees, the probability of lifting the ink layer that has been closely adhered to becomes high, causing a defect in the print layer, and the ink layer remaining in the groove portion in a bridge-like manner stains the groove portion.

As described above, the angle at which the transfer film is lifted is important. However, as another method, peeling is also performed by heating the transfer film 6 from the upper surface of the transfer film 6 which is in close contact with the sandstone-like substrate 5 with an infrared heater. Can be done accurately. That is, when the transfer film 6 is heated from the upper surface of the transfer film as shown in FIG. 12, the transfer film 6 freely expands at the groove 3 and the transfer film cannot extend at the close contact portion. The elongation of the ink layer does not catch up with the elongation of the film and breaks. Therefore, when the film is pulled up in this situation, it is possible to prevent a drawback that the ink layer at the contact portion is lifted, and to prevent the ink layer from remaining in a bridge shape.

FIG. 13 shows an example of the transfer film peeling means. The roll 21 is brought into contact with the upper surface of the substrate 5 on which the transfer film 6 is pressed against the paint layer, and is supported so as to rotate as the substrate 5 advances. The ink layer of the transfer film 6a is transferred to the substrate side, and the base film 6a is pulled up along with the roll 21. The film 6a is wound around a core 22 and wound up on two winding rolls 23 arranged in parallel. . By rotating the winding roll 23, the base film 6a can be pulled up along with the roll 21. Therefore, the angle α formed between the direction in which the base film 6a to be peeled off and the surface of the substrate 5 is formed can be maintained at an angle smaller than 90 degrees. Since the shape of the uneven surface of the substrate is copied onto the base film 6a after peeling, it is difficult to apply sufficient tension to the base film 6a even when the core is driven to rotate. For this reason, when the base film cannot be peeled at a predetermined position, the angle α may exceed 90 degrees, and in such a case, the foil peeling phenomenon in which ink cannot be accurately peeled off and the ink remains on the base film is observed.

Next, an embodiment of a decorative plate having a partially different color tone will be described. 80μ thick as transfer film
A thermal transfer film is prepared by sequentially laminating a release varnish layer, a pattern layer, and a solid ink layer having strong opacity on a polyvinyl chloride film having a small image strength and a weak power of concealing the entire base. As the picture, a picture that only embodies a burrow or a dirt of a brick exposed to wind and rain for a long time and does not include a joint is used. A ceramic siding embossed in a brick joint shape is used as a brick-like substrate 30 (see FIG. 14). First, a gray acrylic urethane enamel (manufactured by Dainippon Paint Co., Ltd.) V Seran 1 as a joint color.
00 enamel is adjusted to a viscosity of 20 seconds (Ford cup # 4), and the entire surface is painted with an airless spray gun. The coating amount is 100 gr / m ² (wet). The joint paint layer 31 is formed by performing hot air drying at 80 ° C. Next, using a foamed rubber roll having a rubber hardness of 40 degrees, the surface portion other than the joint portion, that is, the brick portion, is made of yellow-brown acrylic urethane enamel (V).
(Seran # 100 enamel) is adjusted to a viscosity of 60 seconds (Ford cup # 4) and applied at a coating amount of 55 gr / m ² . Next, the applicant has already obtained a patent in Japanese Patent Publication No. 5-744.
25 and the means of Japanese Patent Publication No. 6-53241 as appropriate, and partially painting with the above-mentioned acrylic urethane enamel, which is toned slightly lighter and darker than the painted color of the bricks other than the joints described above. Then, the surface portion other than the joint portion is painted in three colors. Thereafter, the substrate is dried with hot air of 80 ° C. for 3 minutes to obtain a partially different color coated layer substrate 32. This situation is shown in FIG.
Is shown in a perspective view. The three colors were designated as A color, B color, and C color, respectively.

The partially-unusual coated substrate 32 obtained above and the thermal transfer film emphasizing the pattern are set on a transfer machine and set.
The thermal transfer film is pressed against the substrate 32 with a silicon roll. At this time, the surface temperature of the silicon roll was 150
° C, rubber hardness 40 degrees (normal temperature), wall thickness 20 mm. The transfer speed was 10 m / min, and the pressure was a linear pressure of 25 kg / cm ² . When the thermal transfer film was peeled off after the transfer, the colors A, B, and C of the undercoat layer were seen through, and the burrows and stains of the bricks,
A brick-like decorative board having a high-designed brick-like appearance in which dirt was expressed by printing was obtained.

After transfer printing, top coating is performed to protect the printing layer. The viscosity of the matte acrylic urethane tank (V Seran # 100 clear) was adjusted to 20 seconds (Ford Cup # 4), and the coating amount was 77 gr / m ² (w
et), spray coating was performed uniformly using an airless spray gun, and after setting for about 1 minute, hot air drying at 80 ° C. was performed for 4 minutes. The obtained brick-like decorative board is painted in three colors with slightly different surfaces, and the pattern that expresses the old bricks is given by printing. The brick-like decorative board has the feel of stacking bricks of different colors. I got a board.

Further, a transfer printing decorative sheet having super weather resistance will be described. 8 as base film for transfer film
Using a PVC film having a thickness of 0 μm, a thermal transfer film having a release varnish layer and a picture layer sequentially provided on the film is prepared.
As the ink layer component of the picture, a printing ink containing a resin or a chelate polymer for forming a chelate bond with a metal which is a component of the metal alkoxide resin of the top coat layer is used.

As another specification, in the coating step, ceramic siding is used as a substrate, and a metal alkoxide resin enamel paint, Ceramica GT-95 (Nippon Research Institute Co., Ltd.)
100 gr / m ² (wet) to airless spray gun
And dried with hot air at 80 ° C. for 4 minutes to form a base coating layer.

The thermal transfer film was superposed on the upper surface of the undercoat layer with the picture side down, and the rubber was heated from the upper surface of the thermal transfer film to 160 ° C. with a rubber hardness of 40 ° and a thickness of 2 mm.
Pressure of 10 kg / using a 0 mm silicone rubber roller
Thermal transfer was performed at a speed of 5 m / min at a rate of ² cm ² , and then the thermal transfer film was peeled off and transferred to form a transfer printed portion.

A metal alkoxide clear paint, Ceramica GT-92 (manufactured by Nippon Laboratories Co., Ltd.), is applied to the transfer-printed substrate surface at a rate of 50 gr / m ² with an airless spray gun at 100 ° C. for 5 minutes. Was dried with hot air to form a top coat layer.

As described above, the undercoat layer, the printing section,
Since the top coat layer is chemically bonded by the chelate bond, the performance does not deteriorate with respect to a change in climate. Further, the metal alkoxide-based resin paint exhibits excellent stability against high energy rays such as ultraviolet rays, so that it is a wall material that can sufficiently meet the guarantee of at least 10 years seen in recent residential construction.

On the other side, fluororesin clear (Lumiflon clear, Asahi Glass Co., Ltd.) has been marketed as a resin having excellent weather resistance and stain resistance as a top coat layer. An example using this is described below. I do.

The structure of the transfer film is the same in that a 80 μm thick PVC sheet is used as a base film and a release varnish layer and a picture layer are sequentially provided on the sheet, but the ink component reacts with an isocyanate group. A resin having a hydroxyl group is defined as a vehicle component. In this case, the adhesion is improved by urethane bonding.

In the coating step, a two-pack type acrylic urethane enamel paint (Dainippon Paint Co., Ltd., V-Seran # 100 enamel) was applied on the substrate using an airless spray gun.
It is applied uniformly at a rate of gr / m ² (wet). The mixing ratio of the acrylic polyol and the polyisocyanate of the two-component acrylic urethane is slightly smaller than that of the polyisocyanate. After application, the mixture is dried to the extent of touch-drying and thermally transferred using the above-mentioned transfer film.

Immediately after the transfer printing, a fluororesin clear (Lumiflon clear manufactured by Asahi Glass Co., Ltd.) was applied at a rate of 110 gr / m ² by airless spray, and dried with hot air at 120 ° C. for 10 minutes. At this time, for the hydroxyl group in the main agent,
The ratio of isocyanate groups in the curing agent is slightly excessive (1: 1.
By blending them so as to be in the range of 0.05 to 1: 1.4), strong adhesion and weather resistance can be obtained by bonding to unreacted hydroxyl groups in the base coating layer and hydroxyl groups in the ink layer.

[0043]

The present invention is embodied in the form described above, and has the following effects.

The surface of a natural material or a ceramic material such as a brick or a tile is designed as a pattern, and has a transfer printing portion which is transferred and printed on the paint layer surface of a substrate having at least two levels of height difference. Texture is expressed on the decorative board.

The paint layer may contain inorganic particles having a particle size of 20 to 300 μm, or a stone pattern, a burrow or dirt peculiar to brick may be used as a transferred image by photoengraving to obtain a more natural texture. Become.

By providing a base paint layer of a different color partially on the surface of the substrate and transferring only the pattern with a transfer film on the upper surface thereof, the base color can be seen through,
A color change is effectively applied to a picture of the same color.

Since the color of the undercoat layer is similar to the color of the ink and the brightness of the color is at least two steps brighter, the picture becomes clearer and a deeper vision is provided.

Since the ink layer of the transfer printing section and the top coat layer covering the ink layer are chelated, a decorative plate having extremely high weather resistance can be obtained.

Abrasion resistance is improved by blending beads having a size of 20 to 300 μm with a clear coating material for forming a top coat layer to form a matte state.

The coating roll is composed of a first layer of a soft material and a second layer of a non-porous rubber material which is harder than the first layer. A large number of fine holes are provided on the surface of the second layer so that the coating amount can be regulated. As a result, the substrate surface can be painted evenly. The present invention also includes a third elastic member between the core and the first layer and between the first and second layers.

Cuts are provided on the surface of the transfer pressure roll in directions intersecting each other, and the transfer films are individually pressed at the portions surrounded by the cuts. The transfer is facilitated and efficient transfer is performed even on a substrate having many steps.

When the film is peeled off by making the angle between the film pulling direction and the substrate surface smaller than 90 degrees, the ink layer adhered to the paint layer does not turn up.

In peeling of the film when the film is transferred across the groove, by heating the upper surface of the transfer film, the non-adhered portion located above the groove is stretched, and the interface between the adhered portion and the non-adhered portion is extended. As a result, the ink layer is prevented from being carelessly turned up.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of a substrate used in the present invention.

FIG. 2 is a cross-sectional view showing a substrate provided with a paint layer on FIG. 1;

FIG. 3 is a longitudinal sectional view showing another example of the substrate used in the present invention.

FIG. 4 is a cross-sectional view in a direction perpendicular to the axis of the application roll.

FIG. 5 is a schematic cross-sectional view showing a state where the surface of the substrate is painted.

FIG. 6 is a longitudinal sectional view showing one surface configuration of a substrate.

FIG. 7 is a partial cross-sectional view showing a state where a slope is coated with a sponge roll.

FIG. 8 is a side sectional view showing an example of a transfer printing step.

FIG. 9 is a side sectional view showing an example of a transfer film peeling step.

FIG. 10 is a side sectional view showing a step of removing a transfer film from another substrate.

FIG. 11 is a side sectional view showing a stage next to the stage in FIG. 11;

FIG. 12 is a side sectional view showing an example in which the upper surface of the transfer film is heated at the time of peeling.

FIG. 13 is a side sectional view showing one example of means for peeling a transfer film from a substrate.

FIG. 14 is a perspective view showing an example of a partially different-color coated substrate.

FIG. 15 is a perspective view showing one embodiment of a transfer pressure roll.

FIG. 16 is a partially enlarged schematic cross-sectional view showing a situation where a pressure roll presses a slope.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1, 1a Substrate 2, 2a Uneven part 3 Groove part 4, 4a Paint layer 5 Sandstone-like substrate 6 Thermal transfer film 6b Transfer printing part 10 Application roll 11 Iron core 12 Sponge rubber layer 13 Non-porous rubber layer 14 Slope 15 Hole 21 Roll Reference Signs List 22 winding core 23 take-up roll 30 brick-like substrate 31 joint paint layer 32 black coating substrate 40 iron core 41 sponge rubber layer 42 silicon rubber layer 43 cut section 44 convex section

Claims (12)

[Claims] Claims: 1. A paint layer is formed on a ceramic or metal substrate having at least two levels of height difference and having the surface shape of a ceramic material such as a natural material or a brick or a tile raised as a pattern as a whole. A decorative plate having a transfer printing section formed and transfer-printed on its upper surface as a pattern with a pattern characterizing the material. 2. The decorative board according to claim 1, wherein the paint layer contains inorganic particles having a particle size of 20 to 300 μm. 3. The decorative board according to claim 1, wherein the pattern to be transferred is a stone pattern or a brick pattern. 4. A ceramic or metal siding material is used as a substrate, and a base paint layer of a different color is partially provided on the surface of the substrate, and a transfer film on which only a pattern is printed is formed on the upper surface of the base paint layer. A decorative plate having a transfer printing section on which transfer printing has been performed. 5. A color in which the hue of a base paint layer transferred using a transfer film on which only a pattern is printed is a color similar to the hue of the ink and the brightness (based on JIS Z8721) is at least two steps brighter. A decorative plate having a transfer printing unit, characterized by using: 6. A decorative plate having a transfer printing section in which the ink layer constituting the transfer printing section is covered with a top coat layer and the top coat layer is brought into close contact by chelate bonding. 7. The decorative sheet according to claim 6, wherein beads having a particle size of 20 to 300 μm are blended with the clear coating material for forming the top coat layer to form a mat. 8. One of claims 1 to 7
A coating roll in an apparatus for producing the decorative board described in the paragraph, wherein a soft material such as sponge rubber is used as a first layer on the surface of a cylindrical core material, and a non-porous rubber harder than the first layer is further provided on the surface. A coating roll comprising a quality layer as a second layer, wherein a number of fine holes are provided on the surface of the second layer. 9. The application roll according to claim 8, wherein the non-porous second rubber layer is detachably configured. 10. A transfer pressure roll for an apparatus for manufacturing the decorative board according to claim 1, wherein the transfer roll is pressed against a transfer film. A pressure roll for transfer, wherein a large number of cuts are provided on the surface of a rubber roll in directions intersecting each other, and portions surrounded by the cuts individually press the transfer film. 11. A method for peeling a transfer film in a method for manufacturing a decorative board according to any one of claims 1 to 7, wherein the decorative board is a board having a groove as a component of a design. When performing transfer printing, in order to cut the continuous ink layer at the boundary surface between the part that adheres to the substrate and the part that does not adhere, the angle α between the pulling direction of the transfer film to be peeled and the substrate surface is smaller than 90 degrees. Method of peeling transfer film performed in 12. A method for peeling a transfer film in a method for manufacturing a decorative board according to any one of claims 1 to 7, wherein the decorative board is a board having a groove as a component of a design. When performing transfer printing, the upper surface of the film on the substrate is heated in order to cut a continuous ink layer in a portion that does not adhere to the substrate and a transfer film that does not adhere to the substrate located in the groove portion. A method in which an ink layer adhering to a transfer film is cut off at a boundary surface between a portion that is in close contact and a portion that is not in close contact by extending the portion, and the transfer film is separated.