Ceramic plate as well as preparation method and preparation production line thereof
By using ceramic green body materials with different particle size gradations and inkjet printing technology, combined with the adsorption capacity of matrix powder and fine powder, the problem that the inkjet printing design effect of ceramic plates only exists on the surface is solved, and the design effect of ceramic plates is realized. The presentation of natural and rich three-dimensional pattern textures and thick texture reduces production costs.
Patent Information
- Application Number
- CN202411461529.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-18
- Publication Date
- 2025-01-21
AI Technical Summary
The printing design effect of existing ceramic plates only exists on the surface, and the depth is very shallow, resulting in poor overall feeling, obvious artificial traces, and the penetration of ceramic ink is limited, so it is impossible to achieve penetration with the blank itself, making it difficult to show thick and heavy Texture and realism.
Ceramic green bodies with different particle size gradations are used to form a raw material layout. Through the first pressing, a staggered connected powder layer is formed. The adsorption capacity of the matrix powder and fine powder is combined to limit the penetration depth of the ceramic ink. And through inkjet printing and multiple pressing, drying and firing processes, the presentation of the pattern texture and the flatness of the body are ensured.
The pattern design of ceramic plates is immersed in a certain depth, forming a natural and rich and designed three -dimensional -level pattern texture, enhances the heavy texture and real sense of ceramic board, while reducing production costs, expanding the application of ordinary ceramic ink, scope.
Smart Images
Figure CN119328886A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the field of ceramics, and in particular relates to a ceramic plate and a preparation method and a preparation production line thereof. Background Art
[0002] As people's living standards are gradually improving, the aesthetics of the choice of decoration and decoration materials are becoming more and more personalized, and more attention is paid to style, taste and visual effects. Ceramic plates have been increasingly used in modern decoration because of their superior physical and chemical properties. With the application of ceramic inkjet technology, many stone-like patterns, colors, textures and other surface effects can be imitated. At present, the main production method of ceramic plates is: pressing ceramic raw materials into bricks, drying, applying or not applying glaze (priming), printing pattern design with ceramic inkjet machine, applying transparent protective glaze, and finally firing to obtain ceramic plates of various colors, patterns and textures. In conventional production, the surface glaze is usually applied to the brick as a base layer before printing, but the penetration of ceramic ink and other materials on the glaze layer is extremely limited (only less than 0.2mm in depth), and after firing, the glaze layer will appear a white line-like interlayer between the brick and the surface pattern, forming a layered state in visual effect, resulting in a weak sense of the whole body and obvious artificial traces; in addition, the brick is pressed by a large-tonnage ceramic press, and its volume density basically reaches 2.0g / cm 3 As mentioned above, if ceramic ink and other materials are directly sprayed on the brick, their penetration is also limited, and they cannot be integrated with the brick itself. It is equivalent to only a surface effect, so it is difficult to present a heavy texture and realism.
[0003] In addition, there is a scheme in which the penetration ink is printed on the fabric layer, the blank is turned over and the penetration depth is controlled by drying (i.e., reverse penetration), and finally polishing is performed. This scheme uses the surface in the penetration direction as the pattern presentation surface, but the pattern texture of the penetration surface is definitely not as clear as the pattern texture of the printed surface (because the amount of ink that penetrates is gradually weakened), and if the penetration depth cannot be controlled well, the thickness of the surface polishing needs to be increased to achieve the presentation of the pattern texture, which will cause waste; or there is a scheme in which a colorant is added to the powder of the fabric layer and combined with the penetration ink. Although the pattern texture of this scheme penetrates deeper, the fabric layer containing the colorant has poor bonding with the ordinary base material layer, which will cause poor molding, and the cost of the colorant is high, thereby correspondingly increasing the production cost. Moreover, the penetration inks in the above schemes all contain penetration-assisting components, and their penetration characteristics easily cause the ink to diverge in the blank, affecting the pattern quality. Summary of the invention
[0004] The present invention provides a ceramic plate and a preparation method and a preparation production line thereof, aiming to solve the problem in the prior art that the printing design effect of the ceramic plate only exists on the surface (very shallow depth).
[0005] Therefore, the first aspect of the present invention provides a method for preparing a ceramic plate, comprising the following steps:
[0006] The green body material is arranged on a carrier to form a raw material arrangement body, which is pressed to obtain a raw material arrangement pre-pressed body, and then inkjet printed, followed by pressing, drying and firing to obtain the ceramic plate; the green body material includes a matrix powder with a hollow structure and a particle size of 180μm-500μm, and a fine powder with a particle size of 80μm-125μm.
[0007] In the process of laying materials, the present invention uses raw materials of different particle size distributions to wrap and mix with each other to form a raw material body layout. In the first pressing process (i.e. pre-pressing), the powder of the entire powder layer is squeezed and redistributed, wherein the matrix powder will be squeezed and broken due to the hollow structure. In this process, some fine powders will occupy the original spatial dimension. After all the powders are re-positioned, the entire material layer is staggered in thickness to form a staggered connection state. At the same time, after the matrix powder is squeezed and broken, its specific surface area increases and its adsorption capacity is enhanced, and the fine powder also has a strong adsorption capacity. The combination of the two limits the penetration depth of the ceramic ink. Similarly, its texture and color can be presented on the surface without being able to penetrate deeper and will not penetrate horizontally and cause diffusion distortion.
[0008] In addition, the present invention adopts a whole body structural design mainly formed by base powder to ensure the consistency from the bottom to the surface of the blank, maintain the uniformity of heat radiation during the drying and firing process, reduce the deformation and stratification of the blank, and combine with fine powder to improve the flatness of the board surface. In particular, the higher flatness of the blank surface makes the ink color more stable, effectively improving the color uniformity of the ink.
[0009] Among them, the ink used in inkjet printing can include conventional non-penetrating ceramic ink or conventional non-penetrating ceramic ink combined with functional ceramic ink to form one or a superimposed effect of color pattern or color pattern combined with functional ink positioning layout effect; the ink penetration depth can be 0.5mm-5mm.
[0010] In some preferred embodiments, the matrix powder has a hollow spherical structure. The spherical structure is more evenly stressed, the degree of crushing is more consistent, and it is more conducive to interlacing with the fine powder. The bulk density of the matrix powder is preferably 0.85 g / cm 3 -0.95g / cm 3 .
[0011] In some preferred embodiments, the green body material further comprises flaky particles, wherein the widest diameter of the flaky particles is less than 10 mm, the narrowest diameter is greater than 1.5 mm, and the thickness is less than 2 mm. Adding flaky particles to the green body material can increase the types of green body materials of the plate itself, thereby further enriching the final presentation effect of the ceramic plate, but if the thickness and width of the flaky particles are too large, it will have an adverse effect on the forming of the ceramic plate, and if they are too small, the effect of the particles will not be manifested.
[0012] In some preferred embodiments, the green body material comprises 70%-90% (e.g. 70%, 75%, 80%, 85%, 90%) of base powder and 10%-30% (e.g. 10%, 15%, 20%, 25%, 30%) of fine powder by mass percentage. If the green body material also includes flaky particles, the green body material comprises 50%-85% (e.g. 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%) of base powder, 10%-30% (e.g. 10%, 15%, 20%, 25%, 30%) of fine powder and 5%-20% (e.g. 5%, 10%, 15%, 20%) of flaky particles by mass percentage. The selection of the mass percentage of each component of the above-mentioned green body material is based on the consideration of ceramic plate forming and inkjet color effect. If the proportion of fine powder is too large, it will have an adverse effect on the forming of the ceramic plate. If only a single powder such as matrix powder is used, the depth of inkjet color penetration is no different from the prior art, and the technical effect of the present invention cannot be produced.
[0013] The hollow structure matrix powder can be prepared by the following process:
[0014] The raw materials are weighed, ball-milled, color-added and stirred, and spray-milled to prepare a hollow spherical structure matrix powder with a particle size range of 180μm-500μm. The spray-milling step includes: continuously conveying the color-added and stirred slurry into a spray tower through a pipeline, and spraying the slurry through multiple fine pipes of the spray tower to form small droplets similar to mist, which are dried in the high temperature environment of the spray tower. Since the surface of the small droplets is dried and hardened first, a contracted space is formed after the water inside evaporates, thereby forming a hollow structure powder.
[0015] The above-mentioned fine powder can be obtained by crushing the above-mentioned base powder.
[0016] The above-mentioned flaky particles can be obtained by the following method:
[0017] a. The base powder and / or the fine powder is fed into a granulator and pre-pressed into a sheet;
[0018] b. The color-added slurry after stirring in the above-mentioned process of making the base powder is dried to form a sheet;
[0019] c. Controlling the water content of the slurry after coloring and stirring in the process of making the base powder to prepare a mud material with a water content of 15-25%, or controlling the water content of the base powder or the fine powder to prepare a mud material with a water content of 15-25%, and then extruding any of the above mud materials by extrusion, cutting and drying to prepare a sheet;
[0020] The flakes in a and / or b and / or c are then crushed into flake particles with a maximum diameter of less than 10 mm, a minimum diameter of more than 1.5 mm, and a thickness of less than 2 mm, and the moisture content of the particles is 6-8%.
[0021] In some preferred embodiments, the bulk density of the raw material layout pre-pressed body is 0.8 g / cm 3 -1.2g / cm 3 (The corresponding pressure is 90bar-140bar, such as 90bar, 100bar, 110bar, 120bar, 130bar, 140bar). The pre-pressing of the green body material obtained after mixing is to facilitate inkjet printing. However, if the applied pressure is too large, the volume density will be higher than the upper limit of the above range, that is, too large, and the inkjet penetration effect will be adversely affected to a certain extent; if the applied pressure is too small, the matrix particles with a hollow structure are not broken to an insufficient extent, and the effect of preventing diffusion distortion cannot be well achieved.
[0022] In some preferred embodiments, pre-drying is performed before compression molding, mainly to prevent mold sticking during compression molding and facilitate compression molding and subsequent further drying; the drying temperature of pre-drying is 100°C-200°C (e.g., 100°C, 120°C, 140°C, 160°C, 180°C, 200°C), and the drying time is no more than 1 minute.
[0023] In addition, the pressure during the pressing process is preferably 260 bar-320 bar (e.g., 260 bar, 270 bar, 280 bar, 290 bar, 300 bar, 310 bar, 320 bar), and the volume density of the green body obtained by pressing is 2.3 g / cm 3 -2.5g / cm 3 ; The drying temperature before firing is 200℃-300℃ (for example, 200℃, 220℃, 240℃, 260℃, 280℃, 300℃), the drying time is 30min-60min, and the moisture content of the green body after drying is controlled to be no more than 0.3%; the maximum firing temperature is 1160℃-1200℃ (for example, 1160℃, 1170℃, 1180℃, 1190℃, 1200℃), and the firing cycle is 40min-80min (for example, 40min, 50min, 60min, 70min, 80min).
[0024] In some preferred embodiments, some conventional decorative treatments can be performed before firing, including applying inkjet patterns and / or glazes on the surface, etc., to supplement and / or overlay the previous printing design to make the surface pattern texture richer.
[0025] Based on the above-mentioned preparation method, the second aspect of the present invention provides a ceramic plate material, which contains a printed pattern design within a depth / thickness range of 2 mm below the surface, wherein the flaky particles can at least present the printed pattern design within a thickness range of 0.2 mm below the surface (no more than 0.5 mm at most); after the fine powder and the matrix powder are interlaced and connected with each other, they can at least present the printed pattern design within a thickness range of 0.5 mm below the surface (no more than 2 mm at most); ultimately, the obtained ceramic plate material has a natural, rich, and designable three-dimensional layered pattern texture.
[0026] The third aspect of the present invention provides a production line for preparing the above-mentioned ceramic plate, comprising a feeding device, a first pressing device, a first inkjet device, a second pressing device, a second drying device, and a sintering device which are arranged in sequence.
[0027] In some preferred embodiments, a first drying device is further provided between the first inkjet device and the second pressing device, mainly for implementing the pre-drying operation in the above-mentioned preparation method.
[0028] In some preferred embodiments, a second inkjet device and / or glazing device is further provided between the second drying device and the sintering device, mainly for adding some conventional decorative treatments according to actual needs, such as applying inkjet patterns and / or glazes on the surface.
[0029] Among them, the material distribution device can be a material distribution vehicle, a hopper, etc., and the material distribution device can also include a front-end mixing system to perform predetermined mixing of predetermined materials; the first pressing device and the second pressing device can be ordinary stamping presses or belt presses, preferably belt presses, because the upper and lower overall plane structures have more uniform force surfaces and smoother surfaces than roller pressing methods; the first inkjet device and the second inkjet device can be inkjet printers; the first drying device can be a surface fast drying device such as a sun lamp or electric heating infrared radiation, and the second drying device can be a drying kiln that utilizes waste heat from a kiln; the firing device can be a firing kiln. The entire production line is conveyed by belts and rollers.
[0030] The specific production line process can be as follows: each green body material is laid out through a laying device to form a raw material layout body, the raw material layout body is pressed as a whole by the upper and lower parts of a first pressing device to form a raw material layout pre-pressed body, the first inkjet device prints conventional non-permeable ceramic ink or non-permeable ceramic ink combined with functional ceramic ink on the surface of the raw material layout pre-pressed body, the first drying device dries the surface of the raw material layout pre-pressed body, and then the second pressing device presses the raw material layout pre-pressed body into a green body, the second drying device dries the green body, and finally it is fired into a ceramic plate through a firing device.
[0031] The beneficial effects of the present invention are:
[0032] 1) The present invention proposes a ceramic plate and its preparation method and production line. First, it innovatively proposes and implements printing on a ceramic raw material layout body formed by ceramic green body materials with different particle size distributions before the green body is pressed and formed, and a pattern or design formed by the printed medium produced by a certain depth of infiltration on the surface of the green body is achieved. Combined with the overall layout of the green body raw material, it produces a richer and more natural surface effect than the conventional technology printing pattern or only the green body, and more realistically restores the natural stone, wood grain and other material effects, and realizes a natural and rich designable three-dimensional layered pattern texture with a certain thickness of digital printing, so that the materials in nature are presented to people through technological production. On the one hand, it meets people's demand for beautiful home decoration applications. On the other hand, the raw materials of ceramic products can be mined and applied in a standardized and orderly manner in an environmentally friendly manner, which greatly reduces the specific mining requirements of natural stone mineral resources and the uncontrollable environment; secondly, the printing on the ceramic raw material layout body can greatly reduce the conventional technology of applying a base glaze on the surface of the body, then printing the pattern, and then applying a transparent glaze protection to achieve the multiple links and costs required for the presentation of the printed pattern, as well as the processing costs of various process glaze materials; thirdly, the printing scheme uses conventional (ordinary) ceramic ink, which has a lower use cost and can achieve the predetermined infiltration effect compared to the use of penetrating ceramic ink.
[0033] 2) The present invention directly prints ceramic ink on a pre-pressed body with a certain density to avoid the oil-water separation phenomenon after spraying the base glaze in conventional production. At the same time, the ink has certain adhesion characteristics, and is applied on a powder layer with a certain density under the strong adsorption effect of the powder to form a limited depth of penetration. The color texture will not show obvious diffusion and distortion. At the same time, due to the certain penetration depth, there is no need to add a protective layer on the surface to prevent the texture from being stepped on and worn off. The pattern color penetration of ordinary ceramic ink on the surface of the product is achieved, and compared with the penetration ink and the infiltration ink, the cost is also reduced, and the application range of ordinary ceramic ink is expanded. BRIEF DESCRIPTION OF THE DRAWINGS
[0034] Figure 1Shown is a schematic diagram of a ceramic plate preparation production line;
[0035] Figure 2 Shown Figure 1 A schematic diagram of the cross section of the middle A part;
[0036] Figure 3 Shown Figure 1 The enlarged schematic diagram of the cross section of the middle B part;
[0037] Figure 4 The figure shows an enlarged schematic diagram of the surface of the matrix powder with a hollow spherical structure after being damaged by external force;
[0038] Figure 5 This is a side view of the ceramic plate obtained by firing in Example 1.
[0039] Among them, 1: represents a distributing device; 2a: represents a first pressing device; 3: represents an inkjet device; 4: represents a first drying device; 2b: represents a second pressing device; 5: represents a second drying device; 6: represents a sintering device; 11: represents a base powder; 12: represents a fine powder; 13: represents flaky particles; K: represents a hole displayed after the surface of the base powder with a hollow spherical structure is damaged under the action of an external force. DETAILED DESCRIPTION
[0040] The following will be combined with the embodiments and drawings to clearly and completely describe the concept, specific structure and technical effects of the present invention, so as to fully understand the purpose, scheme and effect of the present invention. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict. The same reference numerals used throughout the drawings indicate the same or similar parts.
[0041] Example 1
[0042] A ceramic plate, the preparation method of which comprises the following steps:
[0043] (1) Fabric: Hollow spherical matrix powder with a particle size of 180 μm-500 μm (water content of 8%, bulk density of 0.9 g / cm 3 ; After the surface of the matrix powder is damaged by external force, holes can be seen, such as Figure 4 As shown in the figure, the base powder is mixed with fine powder with a particle size of 80μm-125μm as the blank material, the base powder accounts for 80% by mass, and the fine powder accounts for 20% by mass; the blank material is directly laid on the belt through a laying device (hopper) to form a raw material layout body;
[0044] The preparation process of the matrix powder with hollow spherical structure is as follows:
[0045] The raw materials were weighed, ball-milled, color-added, stirred, and sprayed to prepare hollow spherical matrix powder with a particle size range of 180 μm-500 μm (bulk density of 0.9 g / cm 3 ), the moisture content of the powder is 8%, wherein the spray powder making process includes: continuously conveying the slurry after color addition and stirring into the spray tower through a pipeline, the slurry is sprayed out through multiple fine pipes of the spray tower to form small droplets similar to mist, and the small droplets dry from the surface to the inside under the high temperature environment of the spray tower. Since the surface dries and hardens first, the internal water evaporates to form a contracted space, thereby forming a hollow structure powder.
[0046] The fine powder is obtained by crushing the above-mentioned base powder.
[0047] (2) First pressing: The raw material structure body is pre-pressed by the first pressing device (belt press) to form a raw material structure pre-pressed body with a smooth surface. The pressure of the press is 115 bar, and the volume density of the raw material structure pre-pressed body is 1.0 g / cm 3 ;
[0048] (3) Inkjet printing: inkjet printing a non-permeable ceramic ink on the surface of the raw material layout pre-pressed body by an inkjet device (inkjet printer);
[0049] (4) Pre-drying: Drying the surface of the raw material layout pre-pressed body after inkjet printing by a first drying device (electrothermal infrared radiation drying device), wherein the drying temperature is 160° C. and the drying time is 25 seconds;
[0050] (5) Second pressing: The surface pre-dried raw material layout pre-pressed body is pressed into a green body by a second pressing device (belt press), wherein the pressure of the press is 300 bar and the volume density of the green body is 2.4 g / cm 3 ;
[0051] (6) Drying: Drying the green body in a second drying device (drying kiln) at a drying temperature of 260° C. until the moisture content of the green body is less than 0.3%;
[0052] (7) Firing: The dried green body is put into a kiln through a firing device (firing kiln) and fired to obtain a ceramic plate. The highest firing temperature is 1180°C and the firing cycle is 60 minutes. The side view of the fired ceramic plate is shown in Figure 1. Figure 5 As shown, it can be seen that it has a richer and more natural effect, and more realistically restores the effects of natural stone, wood grain and other materials without distortion.
[0053] Example 2
[0054] A ceramic plate, the preparation method of which comprises the following steps:
[0055] (1) Fabric: A hollow spherical matrix powder with a particle size of 180 μm-500 μm (prepared in the same manner as in Example 1; with a moisture content of 6% and a bulk density of 0.9 g / cm 3 ), fine powder with a particle size of 80μm-125μm (prepared by the same method as in Example 1), and flaky particles (with a widest diameter of less than 10mm, a narrowest diameter of more than 1.5mm, a thickness of less than 2mm, and a moisture content of 6%) are mixed as a blank material, wherein the base powder accounts for 70% by mass, the fine powder accounts for 15% by mass, and the flaky particles account for 15% by mass; the blank material is directly laid out on a belt through a laying device (hopper) to form a raw material layout body;
[0056] The flaky particles are obtained by feeding fine powder into a granulator for pre-pressing into flaky bodies and then crushing them.
[0057] (2) First pressing: The raw material structure body is pre-pressed by the first pressing device (belt press) to form a raw material structure pre-pressed body with a smooth surface. The pressure of the press is 90 bar, and the volume density of the raw material structure pre-pressed body is 0.8 g / cm 3 ;
[0058] (3) Inkjet printing: inkjet printing a non-permeable ceramic ink on the surface of the raw material layout pre-pressed body by an inkjet device (inkjet printer);
[0059] (4) Pre-drying: Drying the surface of the raw material layout pre-pressed body after inkjet printing by a first drying device (electrical heating infrared radiation drying device), wherein the drying temperature is 180° C. and the drying time is 20 seconds;
[0060] (5) Second pressing: The surface pre-dried raw material layout pre-pressed body is pressed into a green body by a second pressing device (belt press), wherein the pressure of the press is 280 bar, and the volume density of the green body is 2.3 g / cm 3 ;
[0061] (6) Drying: Drying the green body in a second drying device (drying kiln) at a drying temperature of 280° C. until the moisture content of the green body is less than 0.3%;
[0062] (7) Firing: The dried green body is put into a kiln through a firing device (firing kiln) and fired to produce a ceramic plate, wherein the maximum firing temperature is 1200°C and the firing cycle is 50 minutes.
[0063] The plate product obtained in the above embodiment realizes the pattern design formed by the inkjet-printed medium produced by the infiltration of a certain depth of the surface layer of the blank, and combined with the overall layout of the blank raw material, a certain thickness of digital inkjet printing of a natural and rich designable three-dimensional layered pattern texture is produced, which has a richer and more natural effect than the surface effect of the conventional technology inkjet printing pattern or only the whole body of the blank. The product obtained in Example 1 was tested, and the water absorption rate was 0.3% according to GB / T 3810.3, and the wear resistance depth was 150mm according to GB / T 3810.6. 2 According to GB / T 3810.14-2016, the pollution resistance is level 5. It can be seen that this product has good physical properties and can meet any decoration and renovation applications.
[0064] Example 3
[0065] A production line that can be used to prepare the ceramic plates of Examples 1 and 2 has a structure as follows: Figure 1 As shown in (a), it includes a cloth device 1, a first pressing device 2a, an inkjet device 3, a first drying device 4, a second pressing device 2b, a second drying device 5, and a sintering device 6 which are arranged in sequence, and the entire production line is transported by belts and rollers. Figure 1 (b) is a cross-sectional schematic diagram of the material structure after being processed by each device, corresponding to the bottom of each device.
[0066] Among them, the material distribution device 1 is a hopper, and in some cases it can also be a material distribution vehicle, etc.; the first pressing device 2a and the second pressing device 2b are belt presses, and in some cases they can also be ordinary stamping presses; the inkjet device 3 is an inkjet printer; the first drying device 4 is an electric heating infrared radiation drying device, and in some cases it can also be a solar lamp drying device, etc.; the second drying device 5 is a drying kiln; and the firing device 6 is a firing kiln.
[0067] The specific production line process is as follows: the green body material is laid out by the laying device 1 to form a raw material layout body, the raw material layout body is pressed as a whole by the upper and lower parts of the first pressing device 2a to form a raw material layout pre-pressed body, the inkjet device 3 prints non-permeable ceramic ink on the surface of the raw material layout pre-pressed body, the first drying device 4 dries the surface of the raw material layout pre-pressed body, and then the raw material layout pre-pressed body is pressed into a green body by the second pressing device 2b, the second drying device 5 dries the green body, and finally it is fired by the firing device 6 to form a ceramic plate.
[0068] The preparation method of Example 2 is implemented by using the preparation production line of the present invention. When the material distribution device 1 completes the material distribution, the raw material layout body is formed, and its cross-sectional enlarged diagram is as shown in FIG. Figure 2 As shown, that is Figure 1(a) A cross-sectional enlarged view of the middle A portion; when the first pressing device 2a presses the raw material layout body, the raw material layout pre-pressed body is obtained, and its cross-sectional enlarged view is as shown Figure 3 As shown, that is Figure 1 (a) Enlarged cross-sectional view of part B. Figure 2 and Figure 3 In the figure, 11 represents base powder, 12 represents fine powder, and 13 represents flaky particles.
[0069] The above is only a preferred embodiment of the present invention. The present invention is not limited to the above implementation. As long as the technical effect of the present invention is achieved by the same means, it should belong to the protection scope of the present invention. Within the protection scope of the present invention, its technical scheme and / or implementation method can have various modifications and changes.
Claims
1. A method for preparing a ceramic plate, characterized in that: The following steps are involved: The green body material is arranged on a carrier to form a raw material arrangement body, which is pressed to obtain a raw material arrangement pre-pressed body, and then inkjet printed, followed by pressing, drying and firing to obtain the ceramic plate; the green body material includes a matrix powder with a hollow structure and a particle size of 180μm-500μm, and a fine powder with a particle size of 80μm-125μm.
2. The preparation method according to claim 1, characterized in that: The green body material comprises 70%-90% of base powder and 10%-30% of fine powder by mass percentage.
3. The preparation method according to claim 1, characterized in that: The blank material also includes flaky particles, the widest diameter of the flaky particles is less than 10 mm, the narrowest diameter is greater than 1.5 mm, and the thickness is less than 2 mm.
4. The preparation method according to claim 1, characterized in that: The bulk density of the raw material layout pre-pressed body is 0.8 g / cm 3 -1.2g / cm 3 .
5. The preparation method according to claim 1, characterized in that: Pre-drying was also carried out before compression molding.
6. The preparation method according to claim 1, characterized in that: Before firing, a decoration treatment is performed, wherein the decoration treatment includes applying an inkjet pattern and / or applying a glaze on the surface.
7. A ceramic plate, characterized in that: Prepared by the preparation method according to any one of claims 1 to 6.
8. A production line for preparing the ceramic plate according to claim 7, characterized in that: The invention comprises a material distributing device, a first pressing device, a first inkjet device, a second pressing device, a second drying device and a sintering device which are arranged in sequence.
9. The production line according to claim 8, characterized in that: A first drying device is also arranged between the first inkjet device and the second pressing device.
10. The production line according to claim 8 or 9, characterized in that: A second inkjet device and / or a glazing device is also provided between the second drying device and the firing device.