KR20120073507A - Energy saving ceramic coating heat-cooker - Google Patents
Energy saving ceramic coating heat-cooker Download PDFInfo
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- KR20120073507A KR20120073507A KR1020100135294A KR20100135294A KR20120073507A KR 20120073507 A KR20120073507 A KR 20120073507A KR 1020100135294 A KR1020100135294 A KR 1020100135294A KR 20100135294 A KR20100135294 A KR 20100135294A KR 20120073507 A KR20120073507 A KR 20120073507A
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J27/00—Cooking-vessels
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J36/00—Parts, details or accessories of cooking-vessels
- A47J36/02—Selection of specific materials, e.g. heavy bottoms with copper inlay or with insulating inlay
- A47J36/025—Vessels with non-stick features, e.g. coatings
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/02—Polysilicates
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Food Science & Technology (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Cookers (AREA)
Abstract
It relates to cooking vessels such as frying pans, pots, pots, and kettles that cook food by transferring high-temperature heat, and radiate anion and far-infrared rays onto the surface of the metal material used as the main body, and layer an inorganic ceramic coating layer having non-tackiness and antibacterial properties. It increases heat conductivity during cooking and prevents food from burning or crushing, making it easy to clean cooking utensils. It also has excellent corrosion resistance and abrasion resistance. It provides a method of manufacturing a heated cookware that can be captured as possible to save energy.
Description
The present invention relates to a cooking vessel such as a frying pan, pot, pot, kettle, etc., which cooks food by transferring high temperature heat, and emits anion and far infrared rays on the surface of a metal material used as a main body, and has an inorganic ceramic coating layer having non-adhesiveness and antibacterial properties. It is formed by laminating to increase the thermal conductivity during heating and cooking, so that food is not burned or pressed, it is easy to clean cooking utensils. It is not only excellent in corrosion resistance and abrasion resistance but is also released into the atmosphere by processing circular grooves on the bottom. The present invention relates to a heating cooker which can save energy by making it possible to capture combustion energy as much as possible.
In general, heated cooking utensils such as pots, utensils, pans, and rice cookers are coated with a fluorine resin (Teflon) coating on the surface of a metal container to prevent food from sticking to the surface of the container during food cooking. Recently, anion emission and far infrared radiation inorganic ceramic coating technology has also been developed.
The Teflon coating is non-tacky, which hardly adheres to almost all materials, non-oil-resistant to moisture or oil, heat resistance that does not degrade at high temperatures, and durability at low temperatures where physical properties do not change even at low temperatures, and the chemical environment around it. It is hardly influenced by this, so it is widely applied to various molds, machinery and electronic parts as well as heating cooking containers.
Products based on the conventional Teflon coating method has only the characteristics of Teflon, but does not have the characteristics of antibacterial and deodorization. Accordingly, when used as kitchen utensils, various germs are multiplied by moisture, which is unsanitary, and the durability of Teflon is easily peeled off from the bottom surface of the metal cookware, and the Teflon component itself is harmful to the human body.
In order to solve these drawbacks, by replacing a considerable amount of Teflon resin with a liquid ceramic component along with active clay powder containing kaolin and montolinite as main components, a ceramic coating composition having far-infrared rays and anion radiation effects and a method of manufacturing a cookware using the same This has been proposed variously.
The ceramic coating composition is composed of an inorganic ceramic binder, a functional filler, a pigment component, and the like, a pretreatment process for removing various contaminants adhering to the metal surface, a coating process for forming a high strength inorganic ceramic coating layer, and a firing process. Through the cooking utensils will be manufactured.
In the method of manufacturing the ceramic coating cookware, since the particle sizes of the raw materials such as the binder, the filler, and the pigment component are not the same, the mixing of the raw materials is not uniformly performed, so that the strength of the formed coating film is lowered, durability is decreased, and anion and Far-infrared emission effects have a local limitation problem, which requires a lot of cost and time to manufacture an effective ceramic coated cookware.
In general, a heating cooker heats combustion heat directly to the bottom of the cookware to cook a desired cooking. At this time, the heat of combustion that is directly heated to the bottom of the cookware locally heats only a portion where the heat is in contact, thereby providing uniform thermal conductivity. Since the cooking food is damaged due to partial concentrated heating, and a lot of heat of combustion is emitted to the atmosphere, the thermal efficiency is relatively low.
In order to improve thermal efficiency when cooking using a heating cooker, various types of methods for increasing the heat transfer area by forming an uneven portion at the bottom portion or the main surface thereof have been proposed.
The main proposed technology includes a structure in which a plurality of radial protrusions are provided from the center of the outer surface of the bottom of the cookware toward the outer circumference, and a plurality of protrusions are arranged on the outer surface of the bottom of the cookware in a Z shape, Or a structure in which a spiral concentric protrusion is formed on the outer surface of the bottom of the cooking appliance.
This floor structure increases the heat transfer area of the outer surface by expanding the surface area of the bottom of the cookware, and effectively captures the combustion energy released into the atmosphere, thereby effectively using the combustion energy and preventing energy loss, thereby improving heat exchange efficiency. .
However, the protrusion of the outer surface of the bottom of the cookware acts as a major obstacle to the progression of the flame, which is the flow of hot combustion gas, which significantly reduces the convective heat transfer coefficient and thus cannot increase the amount of convective heat transfer. It is not possible to increase the amount of heat transferred to the flame, and since the flame spreads radially from the outer surface of the bottom of the cooking vessel, the heat energy is not transferred to the cooking utensils and is more likely to be released into the atmosphere. The capture efficiency of the flame is reduced, there is a problem that can not expect the desired high efficiency heat exchange.
One aspect of the present invention is to provide a ceramic coating composition for producing a ceramic coating heating cookware having better far-infrared rays and anion-releasing effect and uniform coating strength.
Another aspect of the present invention is to provide a method for preparing the ceramic coating composition.
Another aspect of the present invention is to provide a method for manufacturing a heating cookware using the ceramic coating composition.
Another aspect of the present invention is to provide a method of manufacturing a heating cookware that can save energy by improving thermal efficiency by reducing high-efficiency heat exchange and emission of combustion energy into the atmosphere.
One aspect of the present invention provides a ceramic coating composition for producing a ceramic coating heating cookware having better far-infrared rays and anion-releasing effect and uniform coating strength.
The ceramic coating composition is composed of 46 to 75 parts by weight of inorganic binder, 10 to 39 parts by weight of filler, 5 to 20 parts by weight of functional ceramic powder and 1 to 15 parts by weight of pigment.
Another aspect of the present invention provides a method for preparing a ceramic coating composition by ball milling the raw material prepared in the manufacture of the ceramic coating composition uniformly pulverized into fine nanoparticles of 50 ~ 100 nm size and then mixing the raw materials. .
The ball used in the grinding process is preferably a ceramic material having a diameter of 3 to 150 mm, and is treated for 4 to 12 hours under conditions of a rotational speed of 100 to 300 rpm.
Another aspect of the present invention provides a method of manufacturing a heating cooker using the ceramic coating composition.
The manufacturing method is formed by laminating a ceramic coating composition after a washing process to remove impurities present on the coating surface of the heating cookware, and is manufactured through a conventional firing process.
In the present invention, the firing conditions are preferably baked within a range of 1 to 2 hours at a temperature of 90 ~ 120 ℃, the thickness of the ceramic coating layer is preferably 20 ~ 50 μm.
Another aspect of the present invention provides a method for manufacturing a heating cooker which can save energy by improving heat efficiency by capturing combustion heat and reducing heat emitted to the atmosphere by processing a circular groove on the bottom of the heating cookware. . At this time, the diameter of the circular groove is 5 ~ 9 mm, the size of the opening exposed to the bottom surface in contact with the flame or the heat of combustion of the heating mechanism is processed to be 3 ~ 5 mm. The grooves are processed continuously in the form of straight lines, curves, circles, and the like, and the interval of each groove is preferably 30 to 50 mm.
As described above, the ceramic-coated heating cookware according to the present invention increases the thermal conductivity during cooking by heating an anion and far-infrared rays on the surface of the metal material used as the main body and laminating an inorganic ceramic coating layer having non-tackiness and antimicrobial properties. The food is not burned or pressed so that the cooking utensils are easily washed, and the corrosion resistance and the wear resistance are improved.
In addition, by processing the circular groove on the bottom surface to be able to capture the combustion energy released into the atmosphere as possible, it is possible to manufacture a heating cookware that can save energy.
1 is a longitudinal sectional view of an energy-saving ceramic coated heating cookware of the present invention.
Figure 2 is a bottom view of the bottom of the energy-saving ceramic coated heating cookware of the present invention.
* Description of the main parts of the drawings *
1. Cooking section of ceramic coated heating cookware
2. Bottom part of the heating cookware
3. Circular groove processed at the bottom
Hereinafter, the present invention will be described in more detail.
One embodiment of the present invention provides a ceramic coating composition for producing a ceramic coating heating cookware having excellent far-infrared rays and anion-releasing effect and antimicrobial properties, uniform coating strength and improved.
The ceramic coating composition is composed of 46 to 75 parts by weight of inorganic binder, 10 to 39 parts by weight of filler, 5 to 20 parts by weight of functional ceramic powder and 1 to 15 parts by weight of pigment.
The inorganic binder is to improve the mechanical and chemical properties and thermal conductivity, such as durability, wear resistance, corrosion resistance of the coating layer, and comprises 50 to 70 parts by weight of the silane compound and 30 to 50 parts by weight of silica sol based on 100 parts by weight of the inorganic binder.
The silane compound is an inorganic binder acting as a binder, and more specifically, alkoxysilane, methyltrimethoxysilane, ethyltrimethoxysilane, phenyltrimethoxysilane, vinyltrimethoxysilane and trifluoropropyltrimethoxysilane It is preferable to select and use 1 type or more among them.
The silica sol is an inorganic compound which is bonded by chemical reaction with a silane compound, and the silica sol used in the present invention mixes 15 to 37 parts by weight of porous silica with 5 to 15 parts by weight of isopropyl alcohol based on 100 parts by weight of the inorganic coating composition. It is preferable that the said mixing amount can be adjusted suitably as needed.
Filler is a material used to improve the physicochemical properties of the coating film by preventing cracks and adjusting the viscosity between the silane compound and the silica sol, and to improve physicochemical properties such as durability, aging resistance, and abrasion resistance. It is preferable to use one or more selected from silicon compounds such as titanium, potassium titanate and alumina, a natural mineral group, or dimethylpolysiloxane.
And the functional ceramic powder is preferably 5 to 20 parts by weight based on 100 parts by weight of the ceramic coating composition by mixing to improve the mechanical properties of the coating film, and to release antimicrobial, far-infrared radiation and anion. When the mixed amount of the functional ceramic powder is less than 5 parts by weight, antibacterial and far infrared rays and anion emission effects cannot be expected, and when it exceeds 20 parts by weight, the state change and adhesion of the coating film may be lowered.
The material used as the functional ceramic powder in the present invention is zirconium dioxide, silicon dioxide, aluminum oxide, titanium dioxide, iron oxide, magnesia, tourmaline, ocher, mica, amethyst, raw ore, strontium, vanadium, zirconium, zirconia,
In addition, the ceramic composition according to the present invention uses a pigment to give the color of the coating film, the mixing amount of the pigment is preferably 1 to 15 parts by weight based on 100 parts by weight of the ceramic coating composition, the color of the pigment or the needs of consumers It is not necessarily limited only to the range determined according to the needs of the manufacturer, and may be appropriately adjusted according to the saturation, lightness, etc. of the pigment.
Another embodiment of the present invention provides a method of manufacturing the raw material prepared in the manufacture of the ceramic coating composition by ball mill processing to uniformly milled into fine nanoparticles of 50 ~ 100 nm size and then mixed.
When the raw material is uniformly ground into nanoparticles, the ceramic coating composition is uniformly mixed, the coating film formation time is shortened, and the strength of the formed coating film is increased. In addition, anion release and far-infrared radiation are markedly increased compared to the method of not grinding the raw materials.
The ball used in the grinding process is preferably a ceramic material having a diameter of 3 to 150 mm, and is treated for 4 to 12 hours under conditions of a rotational speed of 100 to 300 rpm.
Another embodiment of the present invention by using the ceramic coating composition food is not adhered to improve the durability, and provides a method for producing a heating cooking appliance excellent in anion and far-infrared radiation.
The manufacturing method is formed by laminating a ceramic coating composition after a washing process of removing impurities present on the coating surface of a metal heating cooker in the form of a frying pan, a pot, a pot, and the like, and is manufactured through a conventional firing process.
In the present invention, the firing process is relatively low-temperature firing, and when heated to a high temperature, the bonding force between the binder mixture and the ceramic powder is more strong and does not peel off from the substrate.
In the present invention, the firing conditions are preferably baked within a range of 1 to 4 hours at a temperature of 90 ~ 120 ℃. When the firing condition is less than the above-mentioned range, the bonding force between the binder and the ceramic powder may be lowered, and when the firing condition exceeds the range, physical properties may deteriorate.
In the present invention, the thickness of the ceramic coating layer is preferably 20 to 50 μm, and when the thickness of the ceramic coating layer is less than 20 μm, mechanical and chemical properties such as durability, abrasion resistance, and corrosion resistance of the coating layer may be reduced, and more than 50 μm. In this case, the thermal conductivity may decrease.
Another embodiment of the present invention provides a method for manufacturing a heating cooker which can save energy by improving heat efficiency by capturing combustion heat and reducing heat emitted to the atmosphere by processing a circular groove on the bottom of the heating cookware. do.
At this time, the diameter of the circular groove is 5 ~ 9 mm, the size of the opening exposed to the bottom surface and in contact with the flame or the heat of combustion of the heating mechanism is 3 ~ 5 mm to extend the outer surface area of the bottom of the container to increase the heat transfer area. At the same time, the heat energy can stay inside the circular groove for a long time, so that more energy can be transferred to the top plate of the cookware than the general floor.
The formation of circular grooves is possible by computer precision machining (CNC) and can be processed by conventional methods.
The grooves are processed continuously in the form of straight lines, curves, circles, and the like, and the interval of each groove is preferably 30 to 50 mm. If the size of the circular groove and the size of the opening are smaller than the lower limit, the efficiency of capturing thermal energy is significantly lowered. If the circular groove is larger than the upper limit, the surface heat transfer area of the bottom does not extend to a desired degree, which is not preferable.
In addition, if the interval between the grooves is smaller than the lower limit value, the flame is reflected and released from the floor, so that effective heat transfer is not performed. On the contrary, if the interval is larger than the upper limit value, the surface heat transfer area decreases, which is not preferable.
Hereinafter, the present invention will be described in detail by examples. However, the following examples are illustrative of the present invention, and the content of the present invention is not limited by the examples.
30 parts by weight of porous silica, 10 parts by weight of isopropyl alcohol, 5 parts by weight of butyl celusolve, 30 parts by weight of alkoxysilane, 5 parts by weight of dimethylpolysiloxane, 4 parts by weight of titanium dioxide, 5 parts by weight of pigment black oxide, The raw material is prepared by the ratio of 10 weight part of aluminum oxides and 1 weight part of zirco aluminates. Each raw material was treated by grinding for 1 hour at 200 rpm using a ceramic ball of 3 mm size and mixed according to each ratio to prepare a ceramic coating composition.
The ceramic coating composition prepared in the frying pan from which impurities were removed was coated by a conventional method to a thickness of about 30 μm, and then calcined at 100 ° C. for 2 hours to prepare a ceramic coated frying pan.
The manufactured ceramic coating frying pan was commissioned by the Korea Far Infrared Ray Evaluation Institute, and a far infrared emissivity and radiation energy measurement test was performed. The results are shown in Table 1 below.
Circular grooves having a diameter of 8 mm and an opening of 4 mm in size were processed concentrically on the bottom surface of the ceramic coated frying pan prepared in Example 1. The interval of each circle was 40 mm.
Pour 1L of tap water into each frying pan of the example with the round groove on the bottom and the comparative example without processing, and heat it at room temperature environment with the same fire power using a domestic gas burner to increase the temperature to 85 ° C and 95 ° C. The measured and compared, the results are shown in Table 2 below.
According to the result, it can be seen that the frying pan of the embodiment in which the circular groove is processed in the shape of concentric circles has high heat exchange efficiency by reaching the target set temperature within a very fast time compared to the frying pan of the comparative example, and it is possible to save energy when cooking food. have.
This test was conducted at 150 ° C., and is a result of measuring the black body using the FT-IR spectrophotometer. The far-infrared emissivity was evaluated as high when it was 0.8 or more, and the ceramic coated frying pan of the present invention showed very high far-infrared emissivity as 0.901.
The heating cooking apparatus of the present invention increases the thermal conductivity during cooking by heating and irradiating anion and far-infrared rays on the surface of the metal material used as the main body, and laminating inorganic ceramic coating layers having non-tackiness and antimicrobial properties, so that food is not burned or pressed. It is easy to clean cooking utensils, and it is excellent in corrosion resistance and abrasion resistance, and by processing circular grooves on the bottom surface, it is possible to capture the combustion energy released into the atmosphere as much as possible, saving energy, It can be used in cooking vessels, such as a frying pan, pot, pot, kettle for cooking food to deliver.
Claims (9)
The inorganic binder is a heating cooker ceramic coating composition composed of 50 to 70 parts by weight of the silane compound and 30 to 50 parts by weight of silica sol.
The functional ceramic powder is a material used as a functional ceramic powder is zirconium dioxide, silicon dioxide, aluminum oxide, titanium dioxide, iron oxide, magnesia, tourmaline, ocher, lignite, amethyst, raw ore, strontium, vanadium, zirconium, zirconia, cerium Heating cookware ceramic coating composition which is at least one inorganic material selected from the group consisting of
Method of manufacturing a ceramic cooking composition for a heating cookware for performing a ball mill treatment step for 4 to 12 hours at a rotational speed of 100 to 300 rpm using a ball of ceramic material having a diameter of 3 to 150 mm
Lamination process of ceramic coating composition;
90 ~ 120 ℃, 1 ~ 4 hours firing process
Ceramic coating heating cookware manufacturing method comprising a
Energy-saving heating cookware bottom processing method by computer precision processing so that the size of the opening exposed to the bottom surface and in contact with the flame or combustion heat of the heating appliance is 3 to 5 mm.
The grooves are processed continuously in the form of straight lines, curves, circles, etc., and each groove has an interval of 30 to 50 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020100135294A KR20120073507A (en) | 2010-12-27 | 2010-12-27 | Energy saving ceramic coating heat-cooker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020100135294A KR20120073507A (en) | 2010-12-27 | 2010-12-27 | Energy saving ceramic coating heat-cooker |
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| Publication Number | Publication Date |
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| KR20120073507A true KR20120073507A (en) | 2012-07-05 |
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| KR1020100135294A KR20120073507A (en) | 2010-12-27 | 2010-12-27 | Energy saving ceramic coating heat-cooker |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016047916A1 (en) * | 2014-09-25 | 2016-03-31 | (주)삼광기업 | Non-stick ceramic coating composition and heat-cooker coated with same |
| CN107019407A (en) * | 2016-01-29 | 2017-08-08 | 佛山市顺德区美的电热电器制造有限公司 | A kind of manufacture method of cooker and cooker |
| CN107853977A (en) * | 2017-02-21 | 2018-03-30 | 浙江古石科技有限公司 | A kind of spinning covers the pan that bottom metal stone matter inner bag pot manufacture craft and its system are matched somebody with somebody |
| WO2019212092A1 (en) * | 2018-05-02 | 2019-11-07 | 21세기메디칼 주식회사 | Surface treatment method for household product |
| CN115820116A (en) * | 2022-12-27 | 2023-03-21 | 武汉苏泊尔炊具有限公司 | Modified ceramic paint, composite coating, preparation method of modified ceramic paint and composite coating, and cooker |
-
2010
- 2010-12-27 KR KR1020100135294A patent/KR20120073507A/en not_active Application Discontinuation
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016047916A1 (en) * | 2014-09-25 | 2016-03-31 | (주)삼광기업 | Non-stick ceramic coating composition and heat-cooker coated with same |
| US11306210B2 (en) | 2014-09-25 | 2022-04-19 | Sam Kwang Co., Ltd. | Nonstick ceramic coating composite and heating kitchen utensil using the same |
| CN107019407A (en) * | 2016-01-29 | 2017-08-08 | 佛山市顺德区美的电热电器制造有限公司 | A kind of manufacture method of cooker and cooker |
| CN107019407B (en) * | 2016-01-29 | 2019-06-04 | 佛山市顺德区美的电热电器制造有限公司 | A kind of manufacturing method of cooker and cooker |
| CN107853977A (en) * | 2017-02-21 | 2018-03-30 | 浙江古石科技有限公司 | A kind of spinning covers the pan that bottom metal stone matter inner bag pot manufacture craft and its system are matched somebody with somebody |
| CN107853977B (en) * | 2017-02-21 | 2021-04-30 | 浙江古石科技有限公司 | Spinning bottom-coated metal stone inner container pot manufacturing process and pot manufactured by spinning bottom-coated metal stone inner container pot |
| WO2019212092A1 (en) * | 2018-05-02 | 2019-11-07 | 21세기메디칼 주식회사 | Surface treatment method for household product |
| KR20190126661A (en) * | 2018-05-02 | 2019-11-12 | 김민호 | Method for treating a surface of daily supplies |
| CN115820116A (en) * | 2022-12-27 | 2023-03-21 | 武汉苏泊尔炊具有限公司 | Modified ceramic paint, composite coating, preparation method of modified ceramic paint and composite coating, and cooker |
| CN115820116B (en) * | 2022-12-27 | 2024-02-27 | 武汉苏泊尔炊具有限公司 | Modified ceramic coating, composite coating, preparation method of modified ceramic coating and cooker |
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