An easy-to-clean inorganic non-metallic sheet, its preparation method, and a kitchen appliance.

Abstract

This invention relates to the field of kitchen appliance technology, specifically to an easy-to-clean inorganic non-metallic sheet, its preparation method, and related kitchen appliances. The easy-to-clean inorganic non-metallic sheet provided by this invention includes a substrate, high-temperature ink blocks, and an easy-to-clean coating. The high-temperature ink blocks are cured on the surface of the substrate, and the easy-to-clean coating is formed on a first surface at the gaps between the high-temperature ink blocks. The easy-to-clean coating is embedded in the grooves between the high-temperature ink blocks. Due to the pin-pin effect of the high-temperature ink, the bonding force between the easy-to-clean material and the substrate is greatly improved, significantly enhancing the adhesion between the easy-to-clean material and the substrate surface. The hardness of the cured high-temperature ink blocks is comparable to that of the substrate, and the height of the high-temperature ink blocks is greater than or equal to the height of the easy-to-clean coating. This reduces wear on the easy-to-clean coating during use, improves the overall wear resistance of the easy-to-clean inorganic non-metallic sheet, and broadens its application range.

Description

Technical Field

[0001] This invention relates to the field of kitchen appliance technology, specifically to an easy-to-clean inorganic non-metallic sheet, its preparation method, and kitchen appliances. Background Technology

[0002] Currently, in kitchen appliances such as range hoods, cooktop panels, oven baking trays, and inner door walls, which are difficult to clean, easy-clean coatings are often applied to inorganic non-metallic substrates. These inorganic non-metallic substrates can be heat-resistant and transparent materials such as glass, ceramics, and polished tiles. For example, in existing technologies, easy-clean coatings are often applied to the glass baking trays and the inner glass surfaces of oven doors, with Teflon being a commonly used material for these coatings.

[0003] Teflon easy-clean coatings are often applied by spraying and high-temperature curing onto the surface of inorganic non-metallic substrates. However, due to the relatively smooth surface of the substrate, the bonding force between Teflon and the inorganic non-metallic substrate is poor, which can easily lead to defects such as bubbles, peeling, or even detachment. On the other hand, the low hardness and poor wear resistance of Teflon coatings severely limit their application range. Summary of the Invention

[0004] (I) The technical problem to be solved by the present invention is that the existing easy-to-clean coatings on the surface of inorganic non-metallic substrates are applied by spraying and high-temperature curing processes, which result in poor adhesion between the easy-to-clean coating and the inorganic non-metallic substrate, and defects such as bubbles, lifting or even peeling are easy to occur; in addition, the easy-to-clean coatings have low hardness and poor wear resistance, which seriously limits their application range.

[0005] (II) Technical Solution

[0006] To address the aforementioned technical problems, one embodiment of the present invention provides an easy-to-clean inorganic non-metallic sheet, comprising: a substrate, high-temperature ink blocks, and an easy-to-clean coating; the substrate has a first surface, on which a plurality of high-temperature ink blocks are spaced apart, and the easy-to-clean coating is formed on the first surface at the gaps between the plurality of high-temperature ink blocks; the height of the easy-to-clean coating is less than or equal to the height of the high-temperature ink blocks.

[0007] Furthermore, the cross-section of the high-temperature ink block is circular, triangular, elliptical, or rectangular.

[0008] Furthermore, the plurality of the high-temperature ink blocks are distributed in a dot matrix pattern on the first surface.

[0009] Furthermore, the distance between two adjacent high-temperature ink blocks is 0.5-2mm.

[0010] Another embodiment of the present invention provides a kitchen appliance including a body and a panel disposed on the body, wherein the panel is made of an easy-to-clean inorganic non-metallic board as described in any of the above embodiments.

[0011] Another aspect of the present invention provides a method for preparing an easy-to-clean inorganic non-metallic sheet, comprising the following steps:

[0012] High-temperature ink blocks are cured on the first surface of the substrate;

[0013] An easy-to-clean material is sprayed onto the first surface of the substrate, and then cured on the first surface at the gap between the high-temperature ink blocks to form an easy-to-clean coating.

[0014] Furthermore, multiple spaced high-temperature ink blocks are screen-printed on the first surface of the substrate, and then the substrate is heated and then cooled to solidify the high-temperature ink blocks on the first surface of the substrate.

[0015] Furthermore, the substrate is sandblasted before screen printing multiple spaced high-temperature ink blocks onto it.

[0016] Furthermore, an easy-to-clean primer and a topcoat are sequentially sprayed onto the first surface of the substrate; the substrate is then heated at 300℃-400℃ for 10-30 minutes to cure and form an easy-to-clean coating.

[0017] Furthermore, before curing the high-temperature ink block on the first surface of the substrate, the first and second surfaces of the substrate are cleaned and dried.

[0018] The beneficial effects of this invention are as follows: The easy-to-clean inorganic non-metallic sheet provided by this invention includes a substrate, high-temperature ink blocks, and an easy-to-clean coating. The high-temperature ink blocks are cured on the surface of the substrate, and the easy-to-clean coating is formed on the first surface at the gaps between the high-temperature ink blocks. The easy-to-clean coating is embedded in the grooves between the high-temperature ink blocks. Due to the pinning effect of the high-temperature ink, the bonding force between the easy-to-clean material and the substrate can be greatly improved, and the adhesion between the easy-to-clean material and the substrate surface can be greatly enhanced. The hardness of the cured high-temperature ink blocks is comparable to that of the substrate, and the height of the high-temperature ink blocks is greater than or equal to the height of the easy-to-clean coating. During use, the wear of the easy-to-clean coating can be reduced, the overall wear resistance of the easy-to-clean inorganic non-metallic sheet can be improved, and the easy-to-clean inorganic non-metallic sheet has a wider range of applications. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a top view of the easy-to-clean inorganic non-metallic sheet provided in Embodiment 1 of the present invention;

[0021] Figure 2 This is a side view of the easy-to-clean inorganic non-metallic sheet provided in Embodiment 1 of the present invention;

[0022] Figure 3 This is a flowchart of the method for preparing the easy-to-clean inorganic non-metallic sheet provided in Embodiment 3 of the present invention;

[0023] Figure 4 This is another flowchart of the method for preparing the easy-to-clean inorganic non-metallic sheet provided in Embodiment 3 of the present invention.

[0024] Icons: 1-Substrate; 11-First surface; 12-Second surface; 2-High-temperature ink block; 3-Easy-to-clean coating. Detailed Implementation

[0025] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. 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.

[0026] Example 1

[0027] This embodiment provides an easy-to-clean inorganic non-metallic sheet material. The inorganic non-metallic substrate can be materials such as glass, ceramics, and vitrified tiles; for example... Figure 1 and Figure 2 As shown, the easy-to-clean inorganic non-metallic sheet includes a substrate 1, high-temperature ink blocks 2, and an easy-to-clean coating 3; the substrate 1 has a first surface 11 and a second surface 12 opposite to each other, a plurality of high-temperature ink blocks 2 are spaced apart on the first surface 11, and the easy-to-clean coating 3 is formed on the first surface 11 at the gap between the plurality of high-temperature ink blocks 2; the height of the easy-to-clean coating 3 is less than or equal to the height of the high-temperature ink blocks 2.

[0028] The easy-to-clean inorganic non-metallic sheet provided in this embodiment has a high-temperature ink block 2 cured on the surface of a substrate 1. An easy-to-clean coating 3 is formed on the first surface 11 at the gap between the high-temperature ink blocks 2. The easy-to-clean coating 3 is embedded in the groove between the high-temperature ink blocks 2. Since the high-temperature ink is similar to the pin-pin effect, it can greatly improve the bonding force between the easy-to-clean material and the substrate 1, and greatly enhance the adhesion between the easy-to-clean material and the surface of the substrate 1. The hardness of the cured high-temperature ink block 2 is comparable to that of the substrate 1. At the same time, the height of the high-temperature ink block 2 is greater than or equal to the height of the easy-to-clean coating 3. During use, it can reduce the wear of the easy-to-clean coating 3, improve the overall wear resistance of the easy-to-clean inorganic non-metallic sheet, and make the easy-to-clean inorganic non-metallic sheet more widely applicable.

[0029] like Figure 1 As shown, multiple high-temperature ink blocks 2 are evenly distributed on the first surface 11 of the substrate 1. The even distribution of high-temperature ink blocks 2 on the first surface 11 of the substrate 1 can make the adhesion between the easy-to-clean coating 3 and the substrate 1 more uniform, and avoid defects such as bubbles, peeling or even falling off between the easy-to-clean coating 3 and the substrate 1 due to uneven force.

[0030] like Figure 1 As shown, multiple high-temperature ink blocks 2 are distributed in a dot matrix pattern on the first surface 11. The dot matrix distribution of high-temperature ink blocks 2 can make the adhesion between the easy-to-clean coating 3 and the substrate 1 more uniform. At the same time, the easy-to-clean coating 3 between multiple high-temperature ink blocks 2 can be connected into one piece, which can improve the overall adhesion between the easy-to-clean coating 3 and the substrate 1 and avoid defects such as bubbles, peeling or even falling off of the easy-to-clean coating 3.

[0031] Optionally, in this embodiment, the multiple high-temperature ink blocks 2 can also be arranged in other ways, such as forming other shapes on the first surface 11 of the substrate 1, such as being distributed in concentric circles or other irregular shapes. As long as an integral easy-to-clean coating 3 can be formed between the multiple high-temperature ink blocks 2, the purpose of improving the adhesion between the easy-to-clean coating 3 and the substrate 1 can also be achieved. Its purpose has not departed from the design concept of the present invention and should fall within the protection scope of the present invention.

[0032] like Figure 1 As shown, the cross-section of the high-temperature ink block is circular, that is, the high-temperature ink block 2 is a cylindrical structure. It can be understood that the cross-sectional shape of the high-temperature ink block 2 in this embodiment is not limited to a circle, but can be a triangle, rectangle, trapezoid, ellipse, etc., or a sphere, dot, or other irregular shape, etc., which can also achieve the purpose of this application.

[0033] Optionally, in this embodiment, the heights of the multiple high-temperature ink blocks 2 are basically the same, and the height of the high-temperature ink block 2 is greater than or equal to the height of the easy-to-clean coating 3. After curing, the hardness of the high-temperature ink block 2 is comparable to that of the substrate 1, and the wear resistance of the high-temperature ink block 2 is better than that of the easy-to-clean coating 3. In this way, when in use, the high-temperature ink block 2 comes into contact with the outside environment first, which can reduce the wear of the easy-to-clean coating 3 and improve the wear resistance of the entire easy-to-clean inorganic non-metallic sheet. Figure 1 As shown, the multiple high-temperature ink blocks 2 disposed on the substrate 1 have the same shape and height. It can be understood that the shapes of the multiple high-temperature ink blocks 2 in this embodiment can be different, such as some high-temperature ink blocks 2 being cylindrical, some high-temperature ink blocks 2 being elliptical cylindrical structures, and some high-temperature ink blocks 2 being rectangular cylindrical structures, etc., which can also achieve the purpose of the present invention.

[0034] In this embodiment, the easy-clean coating 3 is a Teflon coating. In this embodiment, the distance between two adjacent high-temperature ink blocks 2 is 0.5-2mm. The high-temperature ink blocks 2 are arranged more densely, which can improve the adhesion between the easy-clean coating 3 and the substrate 1. In this embodiment, the thickness of the Teflon coating is 10μm, and the height of the high-temperature ink block 2 is 10-12μm.

[0035] Teflon is primarily a polymer compound formed by the polymerization of tetrafluoroethylene. Teflon materials possess excellent non-stick properties; almost no substances adhere to the Teflon coating, even very thin films exhibit excellent non-adhesive performance. The Teflon coating exhibits strong heat resistance: it possesses excellent heat and low-temperature resistance. It can withstand temperatures up to 300℃ for short periods and can be used continuously between 240℃ and 260℃, demonstrating significant thermal stability. It can operate at freezing temperatures without becoming brittle and remains unmelted at high temperatures. The Teflon coating also has good sliding properties: it has a low coefficient of friction. While the coefficient of friction changes under load, it remains only between 0.05 and 0.15. The height of the Teflon coating is 7-10 μm, and the height of the high-temperature ink block 2 is 7-12 μm. The height of the high-temperature ink block 2 is always greater than or equal to the height of the Teflon coating to reduce wear on the Teflon coating.

[0036] In this embodiment, the easy-clean coating 3 can also be made of other easy-clean materials, such as nano-silica, fluorides, or other hydrophilic / hydrophobic easy-clean coatings. When the easy-clean coating 3 is an inorganic coating or a fluoride coating, the thickness of the easy-clean coating 3 is 5 μm, and the height of the high-temperature ink block 2 is 5-7 μm; when the easy-clean coating 3 is an explosion-proof Teflon coating, the thickness of the easy-clean coating 3 is 70 μm, and the height of the high-temperature ink block 2 is 70-100 μm.

[0037] In this embodiment, the inorganic non-metallic substrate can be selected as glass, that is, an easy-to-clean glass is provided in this embodiment. The easy-to-clean glass includes a glass substrate, a high-temperature ink block 2, and an easy-to-clean coating 3. The substrate 1 has a first surface 11 and a second surface 12 opposite to each other. A plurality of high-temperature ink blocks 2 are spaced apart on the first surface 11. The easy-to-clean coating 3 is formed on the first surface 11 at the gap between the plurality of high-temperature ink blocks 2. The height of the easy-to-clean coating 3 is less than or equal to the height of the high-temperature ink block 2.

[0038] Glass is heat-resistant and transparent, making it widely applicable in household appliances such as oven doors, glass baking trays, and touch panels for induction cookers and range hoods. Because the easy-to-clean glass provided in this embodiment is easy to clean, it can also be applied to other structures, such as fish tanks and window sashes. Furthermore, the easy-to-clean glass provided in this embodiment is wear-resistant and crack-resistant, resulting in a longer service life and reduced maintenance and replacement costs.

[0039] It should be noted that the easy-to-clean inorganic non-metallic sheet material described in this embodiment is not limited to easy-to-clean glass, but can also be easy-to-clean ceramics, easy-to-clean polished tiles, etc. As long as the inorganic non-metallic substrate is a material with a smooth surface, it also meets the design concept of this embodiment and should fall within the protection scope of this embodiment.

[0040] Example 2

[0041] This embodiment provides a kitchen appliance, including a body and a panel disposed on the body. The panel adopts the easy-to-clean inorganic non-metallic sheet material as described in Embodiment 1. The easy-to-clean inorganic non-metallic sheet material can be easy-to-clean glass. The body can be a range hood, stove, oven, etc., and the panel can be a stove panel, glass baking tray, inner glass of a door, etc. The kitchen appliance provided in this embodiment uses the easy-to-clean inorganic non-metallic sheet material as described in Embodiment 1 for its panel material. While ensuring the easy-to-clean performance of the easy-to-clean inorganic non-metallic sheet material, it can improve the wear resistance of the easy-to-clean inorganic non-metallic sheet material, and can avoid problems such as bubbling, warping, or even falling off of the easy-to-clean inorganic non-metallic sheet material, thereby reducing maintenance and replacement costs.

[0042] Example 3

[0043] like Figure 3 As shown, this embodiment provides a method for preparing an easy-to-clean inorganic non-metallic sheet, including the following steps:

[0044] High-temperature ink block 2 is cured on the first surface 11 of substrate 1;

[0045] An easy-to-clean material is sprayed onto the first surface 11 of the substrate 1, and an easy-to-clean coating 3 is formed on the first surface 11 at the gap between the high-temperature ink blocks 2.

[0046] In this embodiment, the easy-to-clean material can be hydrophilic / hydrophobic easy-to-clean coatings such as Teflon, nano-silica, and fluorides; the substrate 1 is a glass substrate; and the easy-to-clean non-metallic substrate is easy-to-clean glass. Of course, the easy-to-clean non-metallic substrate in this embodiment can also be other materials, such as easy-to-clean ceramics or easy-to-clean vitrified tiles. Preferably, the easy-to-clean material in this embodiment is Teflon, which has good non-stick properties, heat resistance, slip properties, moisture resistance, wear resistance, and corrosion resistance.

[0047] Steps: Curing high-temperature ink on the first surface 11 of substrate 1 includes: screen printing multiple spaced high-temperature ink blocks 2 on the first surface 11 of substrate 1, then heating substrate 1, and then cooling substrate 1 to cure the high-temperature ink blocks 2 on the first surface 11 of substrate 1.

[0048] Preferably, the substrate 1 is a glass substrate. Since the substrate 1 is a glass substrate, after screen printing multiple spaced high-temperature ink blocks 2 on the first surface 11 of the glass substrate, the glass substrate is tempered. During the tempering process, the high-temperature ink blocks 2 are solidified on the first surface 11 of the glass substrate. The tempering temperature is 650℃-720℃. Due to the high temperature, the binder in the ink will burn off during the tempering process. After high-temperature sintering, the hardness of the high-temperature ink is comparable to that of the glass substrate. Combining the tempering of the glass substrate with the solidification of the high-temperature ink blocks 2 reduces the number of processes, improves efficiency, and saves manufacturing costs. The tempering process of the glass substrate is as follows: heating the glass substrate to a certain temperature, and then cooling both sides uniformly and rapidly. The principle is that during rapid cooling, the surface glass cools quickly, while the internal cooling rate is slow. The internal atomic position adjustment time is long, and the volume tends to shrink, thus generating huge tensile stress on the surface glass. It is like tightening the string in the middle of a string of beads. In this way, when the glass is subjected to stress, the huge internal tensile force will prevent the expansion of surface microcracks, thereby increasing the actual strength of the glass.

[0049] In this embodiment, the high-temperature ink block 2 is melted by the high-temperature environment during the tempering of the glass substrate, and then the melted high-temperature ink block 2 is cooled and solidified by the low-temperature environment during the cooling of the glass substrate, so as to solidify the high-temperature ink block 2 onto the first surface 11 of the glass substrate.

[0050] Furthermore, in this embodiment, when screen printing multiple spaced high-temperature ink blocks 2 on the first surface 11 of the glass substrate, the glass substrate can be sandblasted first; the sandblasted glass substrate can further increase the bonding area with the high-temperature ink blocks 2; after sandblasting, the glass substrate needs to be cleaned and dried.

[0051] In this embodiment, the curing of the high-temperature ink block 2 and the tempering process of the glass substrate can also be carried out separately. This can also achieve the purpose of improving the adhesion between the easy-to-clean coating 3 and the glass substrate in this application. Its purpose has not departed from the design concept of this invention and should fall within the protection scope of this invention.

[0052] In this embodiment, spraying an easy-to-clean material onto the first surface 11 of the substrate 1 and curing it to form an easy-to-clean coating 3 specifically includes:

[0053] A primer and a topcoat of easy-to-clean material are sequentially sprayed onto the first surface 11 of the substrate 1.

[0054] The substrate 1 is heated at 300℃-400℃ for 10min-30min.

[0055] When an easy-cleaning material is sprayed onto the first surface 11 of the inorganic non-metallic substrate, the easy-cleaning material will fall onto the surface of the high-temperature ink block 2. The easy-cleaning material on the surface of the high-temperature ink block 2 will flow into the gaps between the high-temperature ink blocks 2 under the action of gravity or by itself. Since the high-temperature ink blocks 2 are not continuously connected, the easy-cleaning coating 3 formed on the first surface 11 of the substrate 1 is a whole, not formed by splicing together several cured easy-cleaning coatings 3. The integrated easy-cleaning coating 3 has good structural strength and greater adhesion to the substrate 1, which can reduce the risk of blistering, lifting, or even falling off of the easy-cleaning coating 3.

[0056] In the method for preparing the easy-to-clean inorganic non-metallic sheet provided in this embodiment, before curing the high-temperature ink block 2 on the first surface 11 of the substrate 1, the method further includes:

[0057] The first surface 11 and the second surface 12 of the substrate 1 are cleaned and dried. First, the stains or grease on the surface of the substrate 1 are removed, and then the inorganic non-metallic substrate is cleaned and dried. This prevents the easy-to-clean coating 3 from not being firmly connected to the substrate 1 due to unclean substrate surface.

[0058] In this embodiment, the high-temperature ink comprises the following components in parts by weight, and the high-temperature ink block 2 is composed of the following components in parts by weight: 30 parts by weight of binder, 20 parts by weight of high-temperature resistant pigment and 50 parts by weight of inorganic non-metallic substrate powder. In this embodiment, the inorganic non-metallic component is glass powder.

[0059] Preferably, the binder is acrylic resin or cellulose; the high-temperature resistant pigment is titanium dioxide or ceramic pigment; the high-temperature ink block 2 with the above-mentioned proportions has a hardness comparable to that of the substrate 1 after high-temperature sintering, which can improve the wear resistance of the easy-to-clean inorganic non-metallic sheet.

[0060] like Figure 4 As shown, the preparation method of the easy-to-clean glass provided in this embodiment will be described below using Teflon as the easy-to-clean material and glass as the inorganic non-metallic substrate as an example.

[0061] Remove stains and grease from the first surface 11 and the second surface 12 of the glass substrate, and then clean and dry the glass substrate;

[0062] The glass substrate is sandblasted.

[0063] The glass substrate is cleaned and dried again.

[0064] Multiple high-temperature ink blocks 2 are screen-printed on the first surface 11 of the glass substrate, and the multiple high-temperature ink blocks 2 are in a dot matrix pattern on the first surface 11 of the glass substrate.

[0065] The glass substrate is tempered, and the high-temperature ink block 2 is cured onto the first surface 11 of the glass substrate during the tempering process.

[0066] Teflon primer and topcoat are applied sequentially to the first surface 11 of the glass substrate by spraying, and then cured at a temperature of 300℃~400℃ for 10min-30min.

[0067] In this embodiment, the high-temperature ink block 2 is composed of 30 parts by weight of cellulose, 20 parts by weight of titanium dioxide, and 50 parts by weight of glass powder. The high-temperature ink block 2 is cured onto the first surface 11 of the glass substrate during the tempering process. The tempering temperature is 650℃-720℃. Due to the high temperature, the binder in the high-temperature ink will burn off during the tempering process. The hardness of the high-temperature ink after high-temperature sintering is comparable to that of the glass substrate. While ensuring the easy-to-clean performance of the glass, the wear resistance of the glass can be improved, thereby increasing the service life of the glass.

[0068] In this embodiment, spraying Teflon primer can improve the adhesion between the glass substrate and the Teflon coating. At the same time, when spraying Teflon primer and topcoat, Teflon adhesive will fall onto the surface of high-temperature ink block 2. The Teflon sprayed on the surface of high-temperature ink block 2 will flow into the grooves between the high-temperature ink blocks under the action of gravity, and then be cured at a temperature of 300℃~400℃ for 10min-30min.

[0069] In summary, the easy-to-clean inorganic non-metallic sheet provided by this invention includes a substrate, high-temperature ink blocks, and an easy-to-clean coating. High-temperature ink blocks are cured on the surface of the substrate, and an easy-to-clean coating is formed on a first surface at the gaps between the high-temperature ink blocks. The easy-to-clean coating is embedded in the grooves between the high-temperature ink blocks. Due to the pinning effect of the high-temperature ink, the bonding force between the easy-to-clean material and the substrate is greatly improved, significantly enhancing the adhesion between the easy-to-clean material and the substrate surface. The hardness of the cured high-temperature ink blocks is comparable to that of the substrate, and the height of the high-temperature ink blocks is greater than or equal to the height of the easy-to-clean coating. This reduces wear on the easy-to-clean coating during use, improves the overall wear resistance of the easy-to-clean inorganic non-metallic sheet, and broadens its application range.

[0070] In the description of this invention, it should be noted that the terms "upper" and "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0071] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. Furthermore, in the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0072] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An easy-to-clean inorganic non-metallic sheet, characterized in that, include: Substrate (1), high-temperature ink block (2) and easy-to-clean coating (3); The substrate (1) has a first surface (11), on which a plurality of high-temperature ink blocks (2) are spaced apart, and an easy-to-clean coating (3) is formed on the first surface (11) at the gaps between the plurality of high-temperature ink blocks (2); the height of the easy-to-clean coating (3) is less than or equal to the height of the high-temperature ink blocks (2); The high-temperature ink blocks (2) are spaced on the surface of the substrate (1) by screen printing. Then, an easy-cleaning material is sprayed onto the first surface (11) of the substrate (1). The easy-cleaning material falls onto the surface of the high-temperature ink blocks (2). The easy-cleaning material on the surface of the high-temperature ink blocks (2) flows into the gap between the high-temperature ink blocks (2) under the action of gravity or by itself, forming an integral easy-cleaning coating (3) on the first surface (11) of the substrate (1).

2. The easy-to-clean inorganic non-metallic sheet according to claim 1, characterized in that, The high-temperature ink block (2) has a cross-section that is circular, triangular, elliptical, or rectangular.

3. The easy-to-clean inorganic non-metallic sheet according to claim 1, characterized in that, Multiple high-temperature ink blocks (2) are distributed in a dot matrix pattern on the first surface (11).

4. The easy-to-clean inorganic non-metallic sheet according to claim 3, characterized in that, The distance between two adjacent high-temperature ink blocks (2) is 0.5-2mm.

5. A kitchen appliance, comprising a body and a panel disposed on the body, characterized in that, The panel is made of an easy-to-clean inorganic non-metallic sheet material as described in any one of claims 1 to 4.

6. A method for preparing an easy-to-clean inorganic non-metallic sheet, characterized in that, The preparation of the easy-to-clean inorganic non-metallic sheet as described in any one of claims 1 to 4 includes the following steps: High-temperature ink block (2) is cured on the first surface (11) of the substrate (1); An easy-to-clean material is sprayed onto the first surface (11) of the substrate (1), and an easy-to-clean coating (3) is formed on the first surface (11) at the gap between the high-temperature ink blocks (2).

7. The method for preparing easy-to-clean inorganic non-metallic sheet according to claim 6, characterized in that, Multiple high-temperature ink blocks (2) are screen-printed on the first surface (11) of the substrate (1), and then the substrate (1) is heated and then cooled so that the high-temperature ink blocks (2) are solidified on the first surface (11) of the substrate (1).

8. The method for preparing easy-to-clean inorganic non-metallic sheet according to claim 7, characterized in that, Before screen printing multiple spaced high-temperature ink blocks (2) on the substrate (1), the substrate (1) is first sandblasted.

9. The method for preparing the easy-to-clean inorganic non-metallic sheet according to claim 6, characterized in that, A primer and a topcoat of easy-to-clean material are sequentially sprayed onto the first surface (11) of the substrate (1); The substrate (1) is heated at 300℃-400℃ for 10min-30min to cure and form an easy-to-clean coating.

10. The method for preparing easy-to-clean inorganic non-metallic sheet according to any one of claims 6 to 9, characterized in that, Before curing the high-temperature ink block (2) on the first surface (11) of the substrate (1), the substrate (1) is cleaned and dried.

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