A kind of blank glaze decoration process of imitation decorative picture and ceramic tile

Abstract

The present application relates to the field of ceramic decoration, and discloses a biscuit glaze decoration process for imitating decorative paintings and ceramic tiles thereof. The biscuit glaze decoration process comprises the following steps: S1: extracting the hue of a required imitated decorative painting according to a hue circle; S2: selecting a region with the same hue and gradually changing saturation in the decorative painting, and taking the pattern covered by the region as a base color pattern; S3: according to the shape of the base color pattern, applying inorganic color powder with the same hue as the base color pattern on a biscuit body powder layer, and adjusting the application amount of the inorganic color powder per unit area, so that the surface of the biscuit body after the application of the color powder is consistent with the change in lightness of the decorative painting, and the surface of the formed biscuit body is basically consistent with the base color pattern; S4: pressing into a biscuit body and drying; S5: applying a face glaze on the biscuit body in step S4 to form a face glaze layer; S6: inkjet printing on the face glaze layer according to the pattern of the decorative painting; and S7: firing. The ceramic tile obtained through the above steps is bright in color and has levels, meets the aesthetic requirements, and reduces the production cost.

Description

Technical Field

[0001] This invention relates to the field of ceramic decoration, and more particularly to a ceramic tile with a body and glaze decoration process that imitates decorative paintings. Background Technology

[0002] Natural stone decorative paintings are popular among consumers due to their rich natural colors and deep, layered textures. However, the high cost of natural stone, coupled with the layering and mosaic techniques that further increase the difficulty and cost of creating such paintings, makes it difficult for them to enter the consumer market.

[0003] Currently, methods for improving natural stone mainly include using multi-layered glazes to imitate kingfisher feathers, using colored and transparent dry granules to imitate sapphire, or using a composite body, base glaze layer, soft-light transparent glaze layer, colored ink layer, glossy ink layer, and matte transparent dry granule layer to achieve a jade-like effect. However, these methods are difficult to apply to more complex decorative paintings, as they cannot present rich colors and patterns on a single tile, nor can they achieve the three-dimensional effect of a decorative painting.

[0004] Therefore, the urgent market demand is to find a way to replicate the colors and layers of a dozen or even dozens of different types of stone on a single tile, in order to reduce the cost of natural stone mosaic decorative paintings while presenting an aesthetically pleasing overall effect for consumers to choose from. Summary of the Invention

[0005] The purpose of this invention is to provide a ceramic tile with a glaze decoration process for imitating decorative paintings, aiming to solve the problems of insufficient three-dimensionality and color richness in the current imitation of decorative paintings.

[0006] To achieve the above objectives, in a first aspect, the present invention provides a glaze decoration process for imitating decorative paintings, comprising the following steps: S1: Extract the hue of the desired replica decorative painting according to the color wheel; S2: Select areas in the decorative painting with the same hue and gradually changing saturation, and use the pattern covered by the area as the background pattern; S3: According to the shape of the background pattern, apply inorganic color powder with the same hue as the background pattern to the powder layer of the blank, and adjust the amount of inorganic color powder applied per unit area so that the brightness change of the blank surface after applying the color powder is consistent with that of the decorative painting, so that the blank surface after forming is basically consistent with the background pattern. S4: Press into a blank and dry; S5: Apply a surface glaze to the blank in step S4 to form a surface glaze layer; S6: Print the decorative painting pattern onto the glaze layer using inkjet printing; S7: Firing.

[0007] In step S1, the hue of the desired replica decorative painting is extracted according to the color wheel. This step first performs basic color division of the entire decorative painting, which can make a preliminary distinction between the colors of the decorative painting and the areas they cover.

[0008] In step S2, areas with the same hue and gradation of saturation are selected from the decorative painting, and the pattern covered by the corresponding area is used as the background pattern. Selecting areas with the same hue and gradation of saturation in this step provides a basis for the implementation of the subsequent step S3.

[0009] In step S3, inorganic color powder with the same hue as the background pattern is applied to the powder layer of the blank according to the shape of the background pattern. The amount of inorganic color powder applied per unit area is controlled so that the brightness change of the blank surface after the color powder is applied is consistent with that of the decorative painting. This makes the blank surface after molding basically consistent with the background pattern. The brightness can be controlled by the thickness of the blank powder, thereby producing a color gradient effect and creating a good transition effect.

[0010] By controlling the application method of powder thickness in the blank, the color gradation gaps in printing or inkjet processes are compensated for, and the problem of difficulty in replicating gradient areas is solved.

[0011] Preferably, in step S3, the green body powder is a translucent powder after firing, which includes the following by mass percentage: SiO2 60%~65%, Al2O3 20%~25%, Fe2O3 <0.1%, CaO 1%~3%, MgO 0.5%~1%, K2O 2%~3%, Na2O 2%~5%, and loss on ignition 3%~5%.

[0012] The above-mentioned translucent green body after firing contains extremely low iron impurities, which can ensure the base is translucent and has a whiteness of over 70, without yellowing; the total silicon and aluminum content is 80%-90%, which can form a translucent glass phase, thereby producing a translucent effect; the total amount of alkali metal composite flux is 4%~8%, which can form a transparent and non-emulsified microcrystalline liquid phase; the trace alkaline earth metal components can be adapted to the subsequent surface glaze, reducing delamination and cracking.

[0013] The above-mentioned translucent body after firing can give the body a sense of transparency, allowing the color powder applied to the body to better combine with the glaze decoration. It is especially suitable for imitating stone-like decorative mosaic techniques, producing a three-dimensional translucent effect similar to stone.

[0014] In step S4, pressing and drying the body provides a framework for the subsequent application of the surface glaze.

[0015] In step S5, the surface glaze can improve the ink color development effect of subsequent inkjet printing processes.

[0016] Preferably, in step S5, the surface glaze, by mass percentage, comprises 91.3%-94.7% of the translucent body powder after firing in step S3, 4%-6% of SiO2, 0.3%-0.7% of TiO2, and 1%-2% of ZnO, wherein SiO2, TiO2, and ZnO are colorants.

[0017] The selected glaze becomes transparent after firing, which allows for a smoother integration of the base color powder on the body and the glaze decoration, resulting in a smooth color transition effect. The colorant in the transparent glaze after firing can also improve the color development of inkjet printing and enhance its vibrancy.

[0018] In step S6, inkjet printing is performed on the glazed surface from step S5 according to the pattern of the decorative painting, which can complete the replication of the pattern and color of the entire decorative painting.

[0019] Preferably, inkjet printing includes inkjet printing digital mold ink and inkjet printing ink for diffusion layer, wherein the inkjet printing digital mold ink forms a digital mold layer and the inkjet printing ink for diffusion layer forms a diffusion layer.

[0020] The digital mold layer formed by inkjet printing ink can produce a recessed effect after firing, thus outlining a three-dimensional dividing line and presenting a three-dimensional outlining effect, especially imitating the three-dimensional dividing line naturally formed between different materials in mosaic decorative paintings.

[0021] Inkjet inks, through the use of a penetration enhancer, allow colored inks to penetrate into the glaze and body layers. The inkjet ink penetration process creates a layered effect that adds depth to the design within the body, enhancing the visual appeal of the artwork and making the colors more vibrant.

[0022] Preferably, after inkjet printing digital mold ink and inkjet diffusion in step S6, the process further includes step S61, whereby pattern inkjet is used to form a pattern layer.

[0023] The pattern layer formed by inkjet printing can deepen the pattern's thickness and enhance its sense of weight.

[0024] Preferably, after step S61, step S62 is also included, which is as follows: the decorative painting is divided into multiple color layers according to the color tolerance, and the pattern area covered by each color layer is extracted; the color layers are classified according to the 12-color wheel division standard, and the color layers belonging to the same color system are sorted in order of increasing saturation to obtain the sorting order of each color layer; a screen printing plate is made according to the pattern area, and each color layer is printed with the same glaze ink as the color layer, and each color layer in the same color system is printed in the sorting order.

[0025] In step S62, a complete decorative painting is "disassembled" into several monochrome color layers based on color as the dividing dimension. Each color layer is an independent printing pattern, which can reduce the number of screen printing layers and reduce costs. By classifying the color layers through a color wheel and printing them in order of increasing saturation, the interference of highly saturated colors on less saturated colors can be reduced, which is conducive to the gradual presentation of the image. At the same time, it reduces the need to repeatedly adjust the order and number of screen printing layers, saves costs, and ensures that the final printed effect has clear layers and high color fidelity.

[0026] Preferably, screen printing includes overprinting and overlay printing, wherein overlapping areas between color layers are overprinted, and areas outside the overlay printing are overprinted.

[0027] Furthermore, when there are no overlapping areas between color layers of different color systems, the overprinting method has no effect on the respective color layers, so there is no need to distinguish the printing order.

[0028] For printing color layers within the same color family, printing proceeds in ascending order of saturation. Since overlapping areas may exist between color layers within the same family, overprinting is employed, resulting in a thickness of 0.14mm-0.42mm. Overprinting is primarily used to represent areas of color variation and depth in decorative paintings. After applying the ceramic body material, inkjet printing, and screen printing, the overprinted colors and patterns achieve a color and three-dimensional effect consistent with the decorative painting. Furthermore, because ceramic pigments have a certain thickness after printing, overprinting also enhances the sense of depth in the pattern. Registration printing is mainly used to reproduce areas with relatively uniform color gradations in decorative paintings. After applying the ceramic body material, inkjet printing, and single-layer screen printing, registration printing makes the colors and patterns in that area closely resemble those in the decorative painting.

[0029] Preferably, the screen printing plate has a dot coverage of 20%-40%, allowing the ceramic pigments printed earlier in the overprinting process to be displayed through the pores, thereby increasing the color gradation in that area. The multi-screen printing method solves the problem of abrupt color transitions and increases the fluidity of the artistic pattern. This is because, in the overprinted pattern area, due to the opacity of the ceramic pigments themselves, when the screen prints an overprinting process with a covering effect, the upper ceramic pigments will cover the lower ceramic pigments, thus weakening the color gradation.

[0030] Preferably, after step S62, the method further includes step S63, which involves applying a protective glaze. The protective glaze comprises, by mass percentage: SiO2 49-50%, Al2O3 16-17%, Fe2O3 <0.2%, CaO 7-8%, MgO 3-4%, K2O 3-4%, Na2O 0.8-1.1%, TiO2 <0.05%, MnO <0.01%, P2O5 <0.01%, SO3 <0.03%, BaO 4-5%, ZnO 2.8-3.2%, ZrO2 0.08%, SrO 0.01%, and a loss on ignition of 9-10%.

[0031] The protective glaze formula can form more glass phase, producing a sense of transparency and protecting the decorative layer formed between the body and the glaze surface.

[0032] Preferably, in step S7, the firing process includes a heating stage, a holding stage, and a cooling stage. The heating stage includes heating from room temperature at 70°C / min to 700°C-800°C, and then heating at 30°C / min to 1210°C-1230°C; the holding stage has a holding temperature of 1210°C-1230°C for 9 min; the cooling stage includes cooling from the highest temperature at 50°C / min to 950°C-1000°C, then cooling at 300°C / min to 600°C-650°C, then cooling at 15°C / min to 350°C-450°C, and finally cooling to room temperature at 12°C / min.

[0033] The firing time and temperature design of the above firing system are compatible with the body and glaze formulas in this scheme, which can produce ceramic tiles with bright colors, layers and a sense of weight.

[0034] Secondly, the present invention provides a ceramic tile that imitates the glaze decoration process of a decorative painting, which is prepared by any one of the above-mentioned decorative painting preparation processes. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 Decorative painting of a girl playing the flute (original image) Figure 2 Example 1: Fabric design drawing of the blank (blue) Figure 3 Example 1: Fabric design drawing of the blank (green) Figure 4 Ink design drawing for inkjet printing digital mold, Example 1 Figure 5 Inkjet printing design diagram of Example 1 Figure 6 Example 3: Inkjet pattern design drawing Figure 7 Example 3: Decorative painting of a girl playing the flute Figure 8 Screen Printing Design of Example 4 Figure 1 Figure 9 Screen Printing Design of Example 4 Figure 2 Figure 10 Screen Printing Design of Example 4 Figure 3 Figure 11 Screen Printing Design of Example 4 Figure 4 Figure 12 Screen Printing Design of Example 4 Figure 5 Figure 13 Screen Printing Design of Example 4 Figure 6 Figure 14 Screen Printing Design of Example 4 Figure 7 Figure 15 Example 4: Decorative painting depicting a girl playing the flute Specific Implementation The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other. At the same time, the raw materials mentioned below, unless otherwise specified, are all commercially available products; the process steps or preparation methods not mentioned in detail are all process steps or preparation methods known to those skilled in the art.

[0037] This embodiment provides a glaze decoration process for imitating decorative paintings, including the following steps: S1: Extract the hue of the desired replica decorative painting according to the color wheel; S2: Select areas in the decorative painting with the same hue and gradually changing saturation, and use the pattern covered by the area as the background pattern; S3: According to the shape of the background pattern, apply inorganic color powder with the same hue as the background pattern to the powder layer of the blank, and adjust the amount of inorganic color powder applied per unit area so that the brightness change of the blank surface after applying the color powder is consistent with that of the decorative painting, so that the blank surface after forming is basically consistent with the background pattern. S4: Press into a blank and dry; S5: Apply a surface glaze to the blank in step S4 to form a surface glaze layer; S6: Print the decorative painting pattern onto the glaze layer using inkjet printing; S7: Firing.

[0038] In step S3, the color powder can be applied by screen printing with a mesh size of 10-25. If two or more base colors are selected, the powder can be applied in layers in the body.

[0039] The surface evaluation of fired ceramic tiles includes the following indicators: color transition effect, color reproduction and texture presentation.

[0040] 1. Color transition effect: Under standard observation conditions, visual comparison is conducted by trained evaluators. The evaluation method is as follows: select 5 color transition areas and evaluate the smoothness of the transition. Finally, a comprehensive evaluation is formed, which is divided into three levels: "relatively uniform", "uniform" and "smooth".

[0041] 2. Color reproduction: Under standard observation conditions, trained evaluators will conduct visual comparisons. The evaluation method is as follows: based on color tolerance, select categorizable colors in the decorative painting and compare them with the colors in the decorative painting. Finally, a comprehensive rating is formed, which is divided into three levels: "basic reproduction", "reproduction" and "high reproduction".

[0042] 3. Texture Presentation: Under standard observation conditions, trained evaluators will conduct visual comparisons. The evaluation method is as follows: select 5 color areas and evaluate the three-dimensionality and transparency of each color area. The evaluation of three-dimensionality is divided into three levels: "having three-dimensionality", "having relatively strong three-dimensionality" and "having strong three-dimensionality". The evaluation of transparency is divided into three levels: "having transparency", "having relatively strong transparency" and "having strong transparency".

[0043] Example 1 Decorative painting of a girl playing the flute, such as Figure 1 As shown.

[0044] S1: Extract the hues of the decorative painting of the girl playing the flute according to the 6-hue color wheel, and obtain a total of 5 color schemes, including red, yellow, green, blue and orange.

[0045] S2: Select areas of the same hue and saturation gradient within the "Flute Girl" decorative painting, namely the blue and green hues. Use the patterns covered by these blue and green areas as the background pattern. The extracted blue hue and pattern design are shown below. Figure 2 As shown, the extracted green tones and pattern design are as follows: Figure 3 As shown; S3: Following the shape of the background pattern of the flute-playing girl, inorganic color powder with the same hue as the background pattern is applied to the powder layer of the blank through a screen printing plate. The amount of inorganic color powder applied per unit area is controlled so that the brightness change of the blank surface after the color powder is applied is consistent with that of the decorative painting, so that the blank surface after molding is basically consistent with the background pattern.

[0046] The screen used for applying the powder is 20 mesh.

[0047] The green body comprises, by mass percentage: 66.22% SiO2, 20.33% Al2O3, 0.61% Fe2O3, 0.16% TiO2, 0.47% CaO, 0.91% MgO, 3.66% K2O, 2.43% Na2O, and 4.89% loss on ignition.

[0048] S4: Press into a blank and dry; S5: Apply a surface glaze to the blank in step S4 to form a surface glaze layer. By mass, the surface glaze includes: 28 parts of potassium sodium feldspar, 23 parts of quartz powder, 9 parts of calcined alumina, 10 parts of zirconium silicate, 8 parts of washed clay, 6 parts of calcined kaolin, 8 parts of nepheline powder, 4.5 parts of wollastonite, 2.8 parts of calcined talc, and 0.7 parts of calcined zinc oxide.

[0049] S6: According to the pattern of the decorative painting, inkjet printing is performed on the surface glaze layer, and digital mold ink and inkjet ink penetration are performed on the surface in step S3.

[0050] The inkjet printing digital mold ink is model CZN00597 from ToroCeramic Glaze Colorant Co., Ltd.

[0051] The inkjet printing process uses a 4-channel operation, and the inks for all 4 channels are from Jiaxing METCO Ceramics Technology Co., Ltd. Specifically, the ink for the first channel is METCO L023CB1, the ink for the second channel is METCO METCOL240YB1, the ink for the third channel is METCO L550MB1, and the ink for the fourth channel is METCO METCOL281KB1.

[0052] Design drawings for inkjet printing digital mold inks, such as Figure 4 As shown; the design drawing of the inkjet printing process is as follows. Figure 5 As shown.

[0053] S7: Firing. The firing process includes a heating phase, a holding phase, and a cooling phase. The heating phase involves raising the temperature from room temperature to 750°C at a rate of 70°C / min, and then raising it to 1220°C at a rate of 30°C / min. The holding phase involves holding at 1220°C for 9 minutes. The cooling phase involves lowering the temperature from the highest temperature to 980°C at a rate of 50°C / min, then to 600°C at a rate of 300°C / min, then to 400°C at a rate of 15°C / min, and finally to room temperature at a rate of 12°C / min.

[0054] Example 2 Based on Example 1, the difference from Example 1 is that in step S3, the body powder used is a body powder that is translucent after firing, and in step S5, the surface glaze applied is a surface glaze that is transparent after firing.

[0055] In step S3, the translucent green body powder after firing comprises, by mass percentage: SiO2 61.46%, Al2O3 24.06%, Fe2O3 0.09%, CaO 1.53%, MgO 0.86%, K2O 2.15%, Na2O 3.94%, and loss on ignition 4.98%. After firing, the translucent green body powder is passed through a 325-mesh sieve and ball-milled to a fineness of 1.5%.

[0056] In step S5, the transparent glaze after firing, by mass percentage, includes 91.3%-94.7% of the light-transmitting body powder after firing in step S3, 4%-6% of SiO2, 0.3%-0.7% of TiO2, and 1%-2% of ZnO, wherein SiO2, TiO2, and ZnO are colorants, and SiO2 is in a gaseous state.

[0057] Example 3 Based on Example 2, the difference from Example 2 is that after step S6, step S61 is also included, and step S61 is pattern inkjet printing.

[0058] The inkjet printing pattern has 7 channels. The first channel ink is Botao E3566 from Botao Holdings Co., Ltd., the second channel ink is CXN55212 from Toryceramic Glaze Color Co., Ltd., the third channel ink is CXN31799 from Toryceramic Glaze Color Co., Ltd., the fourth channel ink is CIK-NE6118 from Foshan Yidajia Precision Ceramics Technology Co., Ltd., the fifth channel ink is NGY-62016 from Foshan Yangzi Pigment Co., Ltd., the sixth channel ink is NGY-62012 from Foshan Yangzi Pigment Co., Ltd., and the seventh channel ink is 88009G from Foshan Yangzi Pigment Co., Ltd.

[0059] See the design drawing for inkjet printing. Figure 6.

[0060] After step S7, the fired imitation flute-playing girl decorative painting is shown. Figure 7 .

[0061] Example 4 Based on Example 3, the difference from Example 3 is that after step S61, steps S62 and S63 are also included.

[0062] Step S62 is screen printing. The decorative painting is divided into multiple color layers according to color tolerance, and the pattern area covered by each color layer is extracted. The color layers are classified according to the 12-hue color wheel. Color layers belonging to the same color family are sorted in order of increasing saturation to obtain the sorting order of each color layer in the same color family. A screen printing plate is made according to the pattern area. Each color layer is printed with the same enamel ink as the color layer. Each color layer in the same color family is printed in the sorting order.

[0063] Specifically, in the color layers of the decorative painting of the girl playing the flute, seven silkscreen stencils were designed, including: light yellow, light green, dark green, dark green, dark blue, vanadium blue, and bright red. The patterns extracted from these colors are sequentially... Figures 8 to 14 correspond.

[0064] Among them, the patterns corresponding to light green, dark green, and dark green are respectively... Figures 9 to 11 Because they are all in the same color family and have overlapping areas, the screen printing needs to be done in the order of light green - dark green - dark green, that is, according to... Figures 9-10 - Figure 11 The process is carried out in sequence, and the overlapping parts will produce a certain thickness.

[0065] Furthermore, light yellow, dark blue, vanadium blue, and bright red do not have overlapping areas, so overprinting can be used without considering the printing order to achieve the same effect. It's important to note that since there is no overlap between the overprinting and over-printing screens, over-printing screens can be added between overprinting screens, as long as the overprinting screens maintain a printing order of increasing saturation within the same color family.

[0066] In step S62, the screen printing stencil has a mesh count of 180 and the screen printing layer has 7 layers. During the screen printing process, the next layer is printed only after the ink of each screen printing layer has dried, in order to prevent different color layers from smudging each other.

[0067] There are overlapping areas in the above 7-layer screen printing, so a screen with a dot coverage of 25% is set.

[0068] Step S63 involves applying a protective glaze. The protective glaze is sieved through a 325-mesh screen, with a fineness of less than 0.05% and a specific gravity of 1.5 g / mL.

[0069] In step S63, the protective glaze comprises, by mass percentage: 49.36% SiO2, 16.75% Al2O3, 0.18% Fe2O3, 7.56% CaO, 3.87% MgO, 3.53% K2O, 0.96% Na2O, 0.05% TiO2, <0.01% MnO, 0.01% P2O5, 0.01% SO3, 4.88% BaO, 2.91% ZnO, 0.08% ZrO2, 0.01% SrO, and 9.82% loss on ignition.

[0070] The protective glaze is applied using a 100-mesh mesh.

[0071] After step S7, the fired imitation flute-playing girl decorative painting is shown. Figure 15 .

[0072] The effects of the ceramic tiles prepared in Examples 1-4 are shown in Table 1.

[0073] Table 1: Performance Rating of Ceramic Tiles in Examples 1 to 4 Figure 7 Example 3 shows a decorative painting of a girl playing the flute, which, compared to the original, retains the basic texture and color of the pattern. The translucent body and transparent glaze enhance the overall light transmission of the tile, laying the groundwork for subsequent color presentation and luminescence. Applying blue and green powders to the body creates a 3D layered fabric structure, resulting in a gradient of light transmission, distinguishing it from conventional tile products and exhibiting varying degrees of brightness.

[0074] Meanwhile, the inkjet printing technology creates a seamless visual effect throughout the entire decorative painting. Specifically, the digital mold layer formed by inkjet printing creates a recessed effect and black texture, outlining the assembled effect between the stones; the inkjet infiltration process integrates ceramic pigments into the tiles, forming a rich three-dimensional feel. Pattern inkjet printing further adjusts the colors of the entire painting, achieving the effect of replicating a decorative painting.

[0075] Figure 15 The decorative painting of the girl playing the flute, Example 4, compared to Example 3, features more vibrant colors, a stronger overall sense of weight, and a more pronounced three-dimensional stone effect. Figure 1The similarity is higher, presenting an excellent aesthetic effect. This indicates that multi-layer screen printing can further improve the color development, texture, and layering of the tiles. In particular, the overprinting process with halftone dots can further present the color gradient effect and three-dimensionality of the decorative painting; in addition, the protective glaze applied to the surface can further enhance the translucency of the entire tile.

[0076] It should be noted that in this embodiment, the decorative painting of the flute-playing girl is divided into 7 layers when designing the color layers for screen printing. More or fewer layers can also be designed. By selecting appropriate colors and areas to redesign and form the corresponding color layers, and then screen printing is performed, a good imitation effect can be obtained.

[0077] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A glaze decoration technique for imitating decorative paintings, characterized in that, Includes the following steps: S1: Extract the hue of the desired replica decorative painting according to the color wheel; S2: Select an area in the decorative painting with the same hue and a gradual change in saturation, and use the pattern covered by the area as the background pattern; S3: According to the shape of the background pattern, apply inorganic color powder with the same hue as the background pattern to the blank powder layer, and adjust the amount of inorganic color powder applied per unit area so that the brightness change of the blank surface after applying the color powder is consistent with that of the decorative painting, so that the blank surface after molding is basically consistent with the background pattern. S4: Press into a blank and dry; S5: Apply a surface glaze to the blank in step S4 to form a surface glaze layer; S6: Print ink onto the glaze layer according to the pattern of the decorative painting; S7: Firing.

2. The glaze decoration process for imitating decorative paintings as described in claim 1, characterized in that, In step S6, the inkjet printing includes inkjet printing digital mold ink and inkjet printing ink for diffusion. The inkjet printing digital mold ink forms a digital mold layer, and the inkjet printing ink for diffusion forms a diffusion layer.

3. The glaze decoration process for imitating decorative paintings as described in claim 1, characterized in that, After step S6, step S61 is also included, which includes: inkjet printing a pattern on the surface of the infiltration layer according to the pattern of the decorative painting to form a pattern layer.

4. The glaze decoration process for imitating decorative paintings as described in claim 3, characterized in that, Following step S61, step S62 is also included, which includes: dividing the decorative painting into multiple color layers according to color tolerance, and extracting the pattern area covered by each color layer; classifying the color layers according to the 12-color wheel standard, and sorting the color layers belonging to the same color family in order of increasing saturation to obtain the sorting order of each color layer in the same color family; making a screen printing plate according to the pattern area, and printing each color layer with the same glaze ink as the color layer, and printing each color layer in the same color family according to the sorting order.

5. The glaze decoration process for imitating decorative paintings as described in claim 4, characterized in that, In step S62, overlapping portions of the color layers are overprinted, while areas outside the overprinted portions are overlaid.

6. The glaze decoration process for imitating decorative paintings as described in claim 5, characterized in that, In the overprinted area, the dot area coverage of the screen printing plate is 20%-40%.

7. The glaze decoration process for imitating decorative paintings as described in claim 4, characterized in that, Following step S62, a step S63 is further included, wherein step S63 involves applying a protective glaze. The protective glaze comprises, by mass percentage: SiO2 49-50%, Al2O3 16-17%, Fe2O3 <0.2%, CaO 7-8%, MgO 3-4%, K2O 3-4%, Na2O 0.8-1.1%, TiO2 <0.05%, MnO <0.01%, P2O5 <0.01%, SO3 <0.03%, BaO 4-5%, ZnO 2.8-3.2%, ZrO2 0.08%, SrO 0.01%, and a loss on ignition of 9-10%.

8. The glaze decoration process for imitating decorative paintings as described in claim 7, characterized in that, In step S3, the green body powder is a green body powder that is translucent after firing, and its mass percentage includes: SiO2 60%~65%, Al2O3 20%~25%, Fe2O3 <0.1%, CaO 1%~3%, MgO 0.5%~1%, K2O 2%~3%, Na2O 2%~5%, and loss on ignition 3%~5%; In step S7, the firing process includes a heating stage, a holding stage, and a cooling stage. The heating stage includes heating from room temperature at 70℃ / min to 700℃-800℃, and then heating at 30℃ / min to 1210℃-1230℃. The holding temperature in the holding stage is 1210℃-1230℃, and the holding time is 9 min. The cooling stage includes cooling from the highest temperature at 50℃ / min to 950℃-1000℃, then cooling at 300℃ / min to 600℃-650℃, then cooling at 15℃ / min to 350℃-450℃, and finally cooling to room temperature at 12℃ / min.

9. The glaze decoration process for imitating decorative paintings as described in claim 8, characterized in that, In step S5, the surface glaze is a transparent surface glaze after firing, and by mass percentage, it includes 91.3%-94.7% of the light-transmitting body powder after firing, 4%-6% of SiO2, 0.3%-0.7% of TiO2 and 1%-2% of ZnO, wherein SiO2, TiO2 and ZnO are colorants.

10. A ceramic tile with a body and glaze decorated in the style of a decorative painting, characterized in that, Made by the process described in any one of claims 1-9.

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