CN115141534A - Microwave oven and manufacturing method thereof - Google Patents
Microwave oven and manufacturing method thereof Download PDFInfo
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- CN115141534A CN115141534A CN202110342539.5A CN202110342539A CN115141534A CN 115141534 A CN115141534 A CN 115141534A CN 202110342539 A CN202110342539 A CN 202110342539A CN 115141534 A CN115141534 A CN 115141534A
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Images
Classifications
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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
- C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
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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
- A47J37/00—Baking; Roasting; Grilling; Frying
- A47J37/06—Roasters; Grills; Sandwich grills
-
- 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
-
- 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
- C09D5/18—Fireproof paints including high temperature resistant paints
-
- 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
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- C09D7/61—Additives non-macromolecular inorganic
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- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
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- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
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- G01N3/20—Investigating strength properties of solid materials by application of mechanical stress by applying steady bending forces
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- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/40—Investigating hardness or rebound hardness
- G01N3/42—Investigating hardness or rebound hardness by performing impressions under a steady load by indentors, e.g. sphere, pyramid
- G01N3/46—Investigating hardness or rebound hardness by performing impressions under a steady load by indentors, e.g. sphere, pyramid the indentors performing a scratching movement
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
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- C08K2003/265—Calcium, strontium or barium carbonate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
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- Electric Ovens (AREA)
Abstract
The invention provides a microwave oven comprising a cavity for receiving food to be cooked, and the inner surface of the cavity is covered with a coating film, the composition of the coating film comprises: 55-65 volume percent of polyester and curing agent, 5-10 volume percent of pigment, 10-15 volume percent of auxiliary agent and 10-30 volume percent of calcium carbonate. The invention also provides a manufacturing method of the microwave oven. The invention can ensure that the surface of the cavity of the microwave oven keeps stable physicochemical property in a high-temperature environment in a microwave heating mode or an oven heating mode, can improve the manufacturing efficiency and reduce the defective rate of delivered products.
Description
Technical Field
The invention relates to the field of manufacturing and processing of kitchen appliances, in particular to a microwave oven and a manufacturing method thereof.
Background
With the continuous improvement of living standard, the diversified demands of consumers on food cooking modes are higher and higher, and the kitchen operation space is limited, so that the kitchen electric appliance with only a single function cannot meet the use demands of consumers due to the fact that the kitchen electric appliance occupies a large amount of space. For most consumers, the microwave oven and the oven are common kitchen appliances, but the microwave oven and the oven are often independent of each other and occupy a large amount of kitchen space, so that the microwave oven with the functions of the microwave oven and the oven has a great market prospect.
However, the food processing principle of microwave ovens and ovens is different, wherein the microwave oven establishes a microwave electric field in an oven cavity, and heats the food by absorbing microwave energy in the microwave electric field, and the oven heats the food by heating the food surface in a convection and radiation manner by generating high temperature through a heating device. Therefore, a microwave oven having both functions of a microwave oven and a toaster needs to take into account the difference between the two food processing principles.
At present, the surface of a microwave oven on the market is mostly treated by a water-based ceramic oil process or an enamel process. The surface treatment process can cause the oil thickness at the inner corner of the cavity of the microwave oven to be uneven, and then the cavity is easy to foam after being heated. The surface of the enamel process needs to be degreased and then enameled, and the surface treatment process can cause porcelain explosion due to deformation of sheet metal materials or stress of screw holes during assembly.
Disclosure of Invention
In view of this, the present invention provides a microwave oven and a method for manufacturing the same, which can keep the surface of the cavity of the microwave oven stable in physicochemical properties in a high temperature environment in both a microwave heating mode and an oven heating mode, and can improve the manufacturing efficiency and reduce the defective rate in the delivered product.
In one aspect of the present invention, there is provided a microwave oven comprising a cavity for receiving food to be cooked, and an inner surface of the cavity is covered with a coating film, the coating film having a composition comprising: 55-65 volume percent of polyester and curing agent, 5-10 volume percent of pigment, 10-15 volume percent of auxiliary agent and 10-30 volume percent of calcium carbonate.
Preferably, the outer surface of the cavity is covered with the coating film.
Preferably, the thickness of the coating film is 60-80 microns, and the coating film is formed by spraying high-temperature-resistant plastic powder.
In another aspect of the present invention, there is provided a method for manufacturing a microwave oven according to any one of the preceding embodiments, comprising the following steps of processing a surface to be injection-molded:
degreasing the surface to be sprayed with plastic, and then washing the surface to be sprayed with plastic for the first time;
performing silanization treatment on the surface to be subjected to plastic spraying, performing secondary water washing on the surface to be subjected to plastic spraying, and drying moisture of the surface to be subjected to plastic spraying;
after the surface to be sprayed with the plastic is cooled to room temperature, spraying plastic powder onto the surface to be sprayed with the plastic; and
heating the surface to be sprayed with plastic for 10-15 minutes in a hot air circulation heating mode at 180-260 ℃ to solidify the plastic powder of the surface to be sprayed with plastic, and cooling the surface of the plastic film to room temperature after the surface of the plastic film is formed on the surface to be sprayed with plastic.
Preferably, the processing step of degreasing the surface to be sprayed with plastics comprises the following steps:
first degreasing, namely spraying degreasing fluid on the surface to be sprayed for 1 minute at the temperature of 40-50 ℃; and
and (3) degreasing for the second time, and spraying degreasing liquid on the surface to be sprayed for 2 minutes at the temperature of 50-60 ℃.
Preferably, the method for manufacturing the microwave oven further comprises a step of detecting the surface of the plastic film, wherein the step of detecting comprises the following steps:
carrying out conventional performance detection on the surface of the plastic film;
after the conventional performance of the surface of the plastic film is detected to be qualified, the surface of the plastic film is boiled in boiling water for 1.5 to 2.5 hours, and then the boiling resistance of the surface of the plastic film is detected; and
and after the boiling resistance of the surface of the plastic film is detected to be qualified, placing the surface of the plastic film in a high-temperature environment, and detecting the high-temperature resistance of the surface of the plastic film.
Preferably, the routine performance testing optionally comprises at least one of the following tests:
a first appearance test, wherein the plastic film with a flat and smooth surface and no obvious defects is taken as a qualified index of the first appearance test;
a first color test, wherein the qualified index of the first color test is that the surface of the plastic film meets the color requirement of a standard plate;
a gloss test, wherein the gloss range of the surface of the plastic film is measured by a gloss meter with an incidence angle of 60 degrees, and the gloss range between 65 GU and 75GU is taken as a qualified index of the gloss test;
impact test, namely positively punching the surface of the plastic film by using a moment of 120 pounds inches, and taking the phenomenon that the impact edge of the surface of the plastic film is not cracked or shed as a qualified index of the impact test;
performing an adhesion test, namely performing a hundred-grid test method on the surface of the plastic film at intervals of 1mm, and taking the condition that the edge of a scribing line is smooth and the surface of the plastic film at the edge and the intersection point of the scribing line does not fall off as a qualified index of the adhesion test;
testing hardness, namely scratching the surface of the plastic film under the pressure of 1kg by using an H-hardness pencil hardness tester, and taking invisible surfaces to be sprayed with plastic below the surface of the plastic film as qualified indexes of the hardness test;
bending the surface of the plastic film for 180 degrees, controlling the curvature radius of a bending part to be not more than 2mm, and taking the phenomenon that the surface of the plastic film does not crack or fall off at the inner side and the outer side of the bending part as a qualified index of the bending test; and
performing a salt spray test, namely performing the salt spray test on the surface of the plastic film for 240 hours by using a sodium chloride aqueous solution with the concentration of 5%, wherein the salt spray test is qualified when the surface of the plastic film has no bubble and drop phenomenon and the average corrosion depth is not more than 3 mm;
wherein the criteria qualified by the routine performance test is configured to: and the first appearance test, the first color test, the gloss test, the impact test, the adhesion test, the hardness test, the bending test and the salt spray test selected by the conventional performance test all reach qualified indexes.
Preferably, the boiling resistance test optionally comprises at least one of the adhesion test, the impact test and a second appearance test, and the second appearance test takes the condition that the surface of the plastic film has no foaming, cracking and falling phenomena as a qualified index of the second appearance test;
wherein the qualification criteria of the boiling resistance test is configured to: and the adhesive force test, the impact test and the second appearance test selected by the boiling resistance detection all reach qualified indexes.
Preferably, the plastic film surface is placed in a high-temperature environment, and the step of detecting the high-temperature resistance of the plastic film surface comprises:
preserving the temperature of the surface of the plastic film for 1 hour in an environment of 245-255 ℃, then putting the surface of the plastic film into a water bath of 10-20 ℃ for cooling, and performing first high temperature resistance detection on the surface of the plastic film after 10 times of circulation;
the first high-temperature resistance detection optionally comprises at least one of a second appearance test, an impact test, an adhesion test, a second color test and a gloss retention test, wherein the gloss retention test takes that the gloss retention of the surface of the plastic film is more than 60% as a qualified index of the gloss retention test, and the second color test takes that the color difference delta E between the color of the surface of the plastic film and the color of the sample plate is less than or equal to 2.50 as a qualified index of the second color test;
wherein the qualification criteria for the first time high temperature resistance performance test is configured to: and the second appearance test, the impact test, the adhesion test, the second color test and the light-retention rate test selected by the first high-temperature-resistant performance test all reach qualified indexes.
Preferably, the plastic film surface is placed in a high-temperature environment, and the step of detecting the high-temperature resistance of the plastic film surface further includes:
after the first high-temperature resistance performance detection is qualified, preserving the heat of the surface of the plastic film for 1 hour in an environment of 275-285 ℃, putting the surface of the plastic film into a water bath of 10-20 ℃ for cooling, and performing second high-temperature resistance performance detection on the surface of the plastic film after circulating for 3 times;
the second high temperature resistance test optionally comprises at least one of the second appearance test and the adhesion test;
wherein the qualification standard of the second high temperature resistance performance test is configured to: and the second appearance test and the adhesive force test selected by the second high-temperature resistance performance test both reach qualified indexes.
Therefore, the surface treatment is carried out by spraying the high-temperature resistant plastic powder on the cavity of the microwave oven, so that the surface of the cavity of the microwave oven keeps stable physicochemical properties in a high-temperature environment in a microwave heating mode or an oven heating mode, the product has good durability and weather resistance in the whole life cycle, the appearance has good color and luster stability, and the product has good salt mist resistance and chemical resistance in the food cooking process, and is easy to maintain and clean.
The invention also improves the adhesion effect of the high-temperature resistant molding powder by setting reasonable processing steps, so that the thickness of the surface of the plastic film is more uniform. In addition, the invention ensures that the quality of the product subjected to plastic spraying treatment meets the requirements through various property tests in various detection environments, effectively improves the detection efficiency and reduces the defective rate of delivered products through reasonably setting the implementation sequence of the respective property tests in each detection environment.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the example serve to explain the principles of the invention.
FIG. 1 is a schematic flow diagram illustrating a method of manufacturing a microwave oven according to the present invention;
fig. 2 is a schematic flow chart illustrating a detection step in the manufacturing method of the microwave oven according to the present invention.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is in no way intended to limit the invention, its application, or uses. The present invention may be embodied in many different forms and is not limited to the embodiments described herein. These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. It should be noted that: the relative arrangement of parts and steps, the composition of materials, numerical expressions and numerical values set forth in these embodiments are to be construed as merely illustrative, and not as limitative, unless specifically stated otherwise.
In one aspect of the present invention, there is provided a microwave oven comprising a cavity for receiving food to be cooked, and an inner surface of the cavity is covered with a coating film, the coating film comprising: 55-65 volume percent of polyester and curing agent, 5-10 volume percent of pigment, 10-15 volume percent of auxiliary agent and 10-30 volume percent of calcium carbonate.
According to the invention, plastic powder is charged through a high-voltage electrostatic device in a plastic spraying manner, and under the action of an electric field, the coating powder sprayed to the cavity of the microwave oven can be uniformly adsorbed on the surface of a workpiece to form a powdery coating, and then the powdery coating is baked at high temperature and then is leveled and cured to be melted into a compact protective coating film which is firmly attached to the surface of the workpiece. Compared with the surface treatment of water-based ceramic oil and enamel, the coating film formed by spray molding has the advantages of super weather resistance, excellent color and gloss stability, salt mist and chemical resistance, and easiness in maintenance and cleaning. In addition, as the molding powder is far away from the surface of the cavity of the microwave oven through electrostatic adsorption, the molding powder on the surface of the cavity of the microwave oven can be uniformly distributed, so that the finally formed coating film has uniform thickness and can effectively cover all side and corner areas of the cavity of the microwave oven.
Considering that the cavity of the microwave oven is in a high-temperature environment in the process of cooking food, the high-temperature-resistant plastic powder is adopted, so that the coating film formed on the surface of the cavity of the microwave oven can resist the high temperature of more than 200 ℃ for a long time without discoloration and falling off, and has good durability. The polyester in the application adopts high-temperature-resistant polyester, the pigment adopts high-temperature-resistant pigment, the filler adopts high-temperature-resistant calcium carbonate, the auxiliary agent adopts special-effect auxiliary agent, and the components in the proportion of the coating film also comprise catalyst, hardener, cross-linking agent, flatting agent and other possible impurities which are possibly used.
Among them, for the high temperature resistant pigment, titanium dioxide is used to produce white, colored and light-colored, carbon black is used to produce black and gray, and aluminum powder and copper powder can be used to form metallic color effects. As for the high-temperature resistant filler calcium carbonate, the independent addition of the high-temperature resistant filler calcium carbonate can not reduce the gloss, the leveling property or the physical film coating property, and the 10-30 volume percent of calcium carbonate is used as the filler, so that the cost of molding powder can be reduced, and the shielding force of the powder can not be excessively influenced.
Compared with other powders, the polyester has good weather resistance, is not easy to yellow in the baking process, has high glossiness, good leveling property, full paint film and light color, thereby having good powder decoration property and having good visual effect and good physical property when being applied to the field of microwave ovens.
Preferably, in order to make the overall color and gloss of the microwave oven more integral, the outer surface of the cavity is covered with a coating film, so that good film protection can be formed on the inner and outer surfaces of the cavity in all directions.
Preferably, the thickness of the coating film is 60-80 microns, and the coating film is formed by spraying high-temperature-resistant plastic powder.
In another aspect of the present invention, there is provided a method of manufacturing a microwave oven according to any of the preceding embodiments, as shown in fig. 1, the method of manufacturing a microwave oven comprising the following processing steps of a surface to be injection molded: degreasing the surface to be subjected to plastic spraying, and then washing the surface to be subjected to plastic spraying for the first time; performing silanization treatment on the surface to be subjected to plastic spraying, performing secondary water washing on the surface to be subjected to plastic spraying, and drying moisture of the surface to be subjected to plastic spraying; after the surface to be sprayed is cooled to room temperature, spraying molding powder onto the surface to be sprayed; and heating the surface to be sprayed with plastic for 10-15 minutes in a hot air circulation heating mode at the temperature of 180-260 ℃ to solidify the plastic powder of the surface to be sprayed with plastic, and cooling the surface of the plastic film to room temperature after the surface of the plastic film is formed on the surface to be sprayed with plastic.
The degreasing is a step of removing surface oil on the surface to be sprayed before the subsequent surface treatment. In order to more thoroughly degrease the surface to be sprayed, the processing step of degreasing the surface to be sprayed preferably includes first degreasing and second degreasing. The first degreasing is to spray degreasing fluid on the surface to be sprayed for 1 minute at 40-50 ℃. And the second degreasing is to spray degreasing fluid on the surface to be sprayed for 2 minutes at the temperature of 50-60 ℃.
The silanization treatment is a process of treating the surface of the surface to be sprayed with plastics by taking organosilane as a main raw material. The silanization process has several advantages over traditional phosphating: the method has the advantages of no harmful heavy metal ions, no phosphorus, no heating, no sediment generation in the silane treatment process, short treatment time, simple and convenient control, few treatment steps, no surface adjustment procedure, reusable bath solution and capability of effectively improving the adhesive force of the molding powder to the base material.
In the invention, the degreased surface to be sprayed and the silanized surface to be sprayed are washed by water, so that dust, rust, degreasing treatment liquid and silanization treatment liquid on the surface to be sprayed can be effectively washed away, and the adhesive force of the surface to be sprayed to plastic powder is improved.
Considering that the cavity of the microwave oven obtained by plastic injection will work for a long time under the microwave heating environment and the oven heating environment, it is necessary to inspect the surface of the plastic film during the production and manufacturing process of the microwave oven, so as to find the unqualified product batch as early as possible in the whole manufacturing cycle and reduce the defective rate of the delivered finished products.
Therefore, preferably, as shown in fig. 2, the method for manufacturing a microwave oven further includes a step of detecting the surface of the plastic film, and the step of detecting includes: carrying out conventional performance detection on the surface of the plastic film; after the conventional performance of the surface of the plastic film is detected to be qualified, the surface of the plastic film is boiled in boiling water for 1.5 to 2.5 hours, and then the boiling resistance performance of the surface of the plastic film is detected; and after the boiling resistance of the surface of the plastic film is detected to be qualified, placing the surface of the plastic film in a high-temperature environment, and detecting the high-temperature resistance of the surface of the plastic film.
The conventional performance detection, the boiling resistance detection and the high temperature resistance detection in the invention respectively use the former detection qualification as the premise of self implementation, and the invention leads the detection sequence with higher detection cost to be arranged at the back, thereby being convenient to discover the problem batch in the delivered finished product as early as possible with the lowest cost in the production process of the microwave oven.
Specifically, preferably, the conventional performance test optionally includes at least one of a first appearance test, a first color test, a gloss test, an impact test, an adhesion test, a hardness test, a bending test, and a salt spray test, and the criterion that the conventional performance test passes is configured to: and the first appearance test, the first color test, the gloss test, the impact test, the adhesion test, the hardness test, the bending test and the salt spray test which are selected in the conventional performance detection all reach qualified indexes.
Wherein, the first appearance test takes the plastic film surface as the qualified index, and the plastic film surface is flat and smooth and has no obvious defect; the first color test takes the plastic film surface meeting the color requirement of a standard plate as a qualified index; gloss test the gloss range of the surface of the plastic film measured by a gloss meter with an incident angle of 60 degrees is taken as a qualified index, and the gloss range is between 65 and 75 GU.
The first appearance test, the first color test and the gloss test are more intended to investigate the visual characteristics of the plastic film surface so that the manufactured product meets the visual requirements of delivery.
The impact test is to positively impact the surface of the plastic film by using the torque of 120 pounds inches, and the impact edge of the surface of the plastic film is qualified as no cracking or shedding phenomenon; in the adhesion test, a hundred-grid test method is carried out on the surface of the plastic film at intervals of 1mm, and the qualified indexes of smooth edge of a scribing line and no shedding phenomenon on the surface of the plastic film at the edge and the intersection of the scribing line are adopted; in the hardness test, a pencil hardness instrument with H hardness is used for scratching the surface of the plastic film under the pressure of 1kg, and the invisible surface to be sprayed with plastic below the surface of the plastic film is taken as a qualified index; the bending test bends the surface of the plastic film for 180 degrees, the curvature radius of the bending part is controlled to be not more than 2mm, and the condition that the inner side and the outer side of the bending part of the surface of the plastic film are not cracked or shed is taken as a qualified index.
Impact test, adhesion test, hardness test and bending test are more in order to investigate whether the surface of the plastic film drops or cracks in the process of mechanical processing such as drilling, bending and sheet metal, thereby avoiding the phenomenon of porcelain explosion in the process similar to enamel.
The salt spray test uses 5% sodium chloride water solution to carry out the salt spray test on the surface of the plastic film for 240 hours, and the qualified index is that the surface of the plastic film has no bubble and shedding phenomenon and the average corrosion depth is not more than 3 mm.
The salt spray test is used for inspecting whether the plastic film surface is excessively corroded by chemicals added in the food cooking process in the food processing process, so as to inspect the weather resistance of the product.
The invention can optionally test the first appearance test, the first color test, the gloss test, the impact test, the adhesion test, the hardness test, the bending test and the salt spray test, and can select a plurality of tests according to the characteristics of the product, thereby reducing the test cost and the test time as much as possible on the premise of meeting the delivery requirement of the plastic film surface.
For example, in some microwave oven designs, the exterior surface of the cavity is bonded to the housing, so that the user can only see the interior surface of the cavity, and not the exterior surface of the cavity. In this regard, the two tests relating to the visual effect of the plastic film surface, the first color test and the gloss test, can be omitted in the conventional performance testing process. Similarly, in some microwave oven designs, a portion of the outer surface of the cavity, which is part of the insulating cavity enclosed in a relatively sealed environment, will be difficult to contact chemicals such as salt during cooking of the food, and therefore the salt spray test during conventional performance testing can be omitted accordingly.
After the conventional performance test is qualified, preferably, the plastic film surface on the cavity of the microwave oven needs to be subjected to boiling-resistant test. The boil resistance test optionally includes at least one of an adhesion test, an impact test, and a second appearance test, the pass criteria for the boil resistance test configured to: and the adhesion test, the impact test and the second appearance test selected in the boiling resistance detection all reach qualified indexes.
Different from the first appearance test, the second appearance test takes the condition that the surface of the plastic film has no foaming, cracking and falling-off phenomena as qualified indexes. After the surface of the plastic film is steamed in boiling water, the defects on the surface of the plastic film are amplified, so that the second external observation test is different from the first external observation test, and whether the surface defects with serious degrees, such as blistering, cracking, falling and the like, appear on the surface of the plastic film or not is mainly judged. The adhesion test and the impact test are the same as the corresponding test methods in the conventional performance test, and are not described again here.
After the boiling resistance detection is qualified, preferably, the high temperature resistance detection is carried out on the surface of the plastic film on the cavity of the microwave oven so as to identify whether the surface of the plastic film can withstand the high temperature and physicochemical environment in the microwave cooking or oven cooking process. The step of detecting the high temperature resistance performance comprises a first time of detecting the high temperature resistance performance and a second time of detecting the high temperature resistance performance.
Before the first high-temperature resistance detection is carried out on the surface of the plastic film, the surface of the plastic film is placed in a water bath with the temperature of 10-20 ℃ for cooling after being kept at 245-255 ℃ for 1 hour, and the cooling and heating are circulated for 10 times so as to simulate the repeated alternate cooling and heating environment of the surface of the plastic film on the cavity of a microwave oven in the process of cooking food.
The first high temperature resistance test optionally comprises at least one of a second appearance test, an impact test, an adhesion test, a second color test, and a gloss retention test, and the qualification criteria for the first high temperature resistance test is configured to: and the second appearance test, the impact test, the adhesive force test, the second color test and the light retention test selected in the first high-temperature resistance performance test all reach qualified indexes.
The second color test takes the color difference delta E between the color of the surface of the plastic film and the color of the sample plate to be less than or equal to 2.50 as the qualified index of the second color test. The second color test is different from the first color test, and more accurate parameters are used as the standard for judging whether the color meets the requirements, so that the characteristic that the color defects of the plastic film surface are possibly amplified after the first high-temperature resistance test is better utilized.
After the first high-temperature resistance performance detection is qualified, preferably, the second high-temperature resistance performance detection is carried out on the surface of the plastic film so as to test the influence of the critical high temperature on the surface of the plastic film. Before the second high temperature resistance detection, the surface of the plastic film is firstly insulated for 1 hour in an environment of 275-285 ℃, then is put into a water bath of 10-20 ℃ for cooling, and after 3 times of cold-hot circulation, at least one of a second appearance test and an adhesion test is carried out on the surface of the plastic film. And the qualified standard of the second high-temperature resistance performance test is configured as: and the second appearance test and the adhesion test selected by the second high-temperature resistance performance test both reach qualified indexes.
Therefore, the surface treatment is carried out by spraying the high-temperature resistant plastic powder on the cavity of the microwave oven, so that the surface of the cavity of the microwave oven keeps stable physicochemical properties in a high-temperature environment in a microwave heating mode or an oven heating mode, the product has good durability and weather resistance in the whole life cycle, the appearance has good color and luster stability, and the product has good salt mist resistance and chemical resistance in the food cooking process, and is easy to maintain and clean.
The invention also improves the adhesion effect of the high-temperature resistant molding powder by setting reasonable processing steps, so that the thickness of the surface of the plastic film is more uniform. In addition, the invention ensures that the quality of the product subjected to plastic spraying treatment meets the requirements through various property tests in various detection environments, effectively improves the detection efficiency and reduces the defective rate of delivered products through reasonably setting the implementation sequence of the respective property tests in each detection environment.
So far, some specific embodiments of the present invention have been described in detail by way of examples, but it should be understood by those skilled in the art that the above examples are only for illustrative purposes and are not intended to limit the scope of the present invention. It will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope and spirit of the present invention. The scope of the invention is defined by the appended claims.
Claims (10)
1. A microwave oven comprising a cavity for receiving food to be cooked and covered on its inner surface with a coating film having a composition comprising: 55-65 volume percent of polyester and curing agent, 5-10 volume percent of pigment, 10-15 volume percent of auxiliary agent and 10-30 volume percent of calcium carbonate.
2. A microwave oven as claimed in claim 1, wherein the outer surface of the cavity is covered with the coating film.
3. A microwave oven as claimed in claim 1 or 2, wherein the thickness of the coating film is 60-80 microns, and the coating film is made by high temperature plastic powder injection molding.
4. A method of manufacturing a microwave oven according to any of claims 1 to 3, characterized in that it comprises the following steps of processing the surface to be sprayed:
degreasing the surface to be sprayed with plastic, and then washing the surface to be sprayed with plastic for the first time;
performing silanization treatment on the surface to be subjected to plastic spraying, performing secondary water washing on the surface to be subjected to plastic spraying, and drying moisture of the surface to be subjected to plastic spraying;
after the surface to be sprayed is cooled to room temperature, spraying molding powder onto the surface to be sprayed; and
heating the surface to be sprayed with plastic for 10-15 minutes in a hot air circulation heating mode at 180-260 ℃ to solidify the plastic powder of the surface to be sprayed with plastic, and cooling the surface of the plastic film to room temperature after the surface of the plastic film is formed on the surface to be sprayed with plastic.
5. The manufacturing method according to claim 4, wherein the step of degreasing the surface to be sprayed with plastics comprises:
degreasing for the first time, and spraying degreasing liquid on the surface to be sprayed for 1 minute at the temperature of 40-50 ℃; and
and (3) degreasing for the second time, and spraying degreasing liquid on the surface to be sprayed for 2 minutes at the temperature of 50-60 ℃.
6. The method of claim 4, further comprising a step of inspecting the surface of the molding film, wherein the step of inspecting comprises:
carrying out conventional performance detection on the surface of the plastic film;
after the conventional performance of the surface of the plastic film is detected to be qualified, the surface of the plastic film is boiled in boiling water for 1.5 to 2.5 hours, and then the boiling resistance of the surface of the plastic film is detected; and
and after the boiling resistance of the surface of the plastic film is detected to be qualified, placing the surface of the plastic film in a high-temperature environment, and detecting the high-temperature resistance of the surface of the plastic film.
7. The method of manufacturing a microwave oven of claim 6, wherein the routine performance testing optionally includes at least one of the following tests:
a first appearance test, wherein the plastic film with a flat and smooth surface and no obvious defects is taken as a qualified index of the first appearance test;
a first color test, wherein the qualified index of the first color test is that the surface of the plastic film meets the color requirement of a standard plate;
a gloss test, wherein the gloss range of the surface of the plastic film is measured by a gloss meter with an incidence angle of 60 degrees, and the gloss range between 65 GU and 75GU is taken as a qualified index of the gloss test;
impact test, namely positively punching the surface of the plastic film by using a moment of 120 pounds inches, and taking the phenomenon that the impact edge of the surface of the plastic film is not cracked or shed as a qualified index of the impact test;
performing an adhesion test, namely performing a hundred-grid test method on the surface of the plastic film at intervals of 1mm, and taking the condition that the edge of a scribing line is smooth and the surface of the plastic film at the edge and the intersection point of the scribing line does not fall off as a qualified index of the adhesion test;
testing hardness, namely scratching the surface of the plastic film under the pressure of 1kg by using an H-hardness pencil hardness tester, and taking invisible surfaces to be sprayed with plastic below the surface of the plastic film as qualified indexes of the hardness test;
bending the surface of the plastic film for 180 degrees, controlling the curvature radius of a bending part to be not more than 2mm, and taking the phenomenon that the surface of the plastic film does not crack or fall off at the inner side and the outer side of the bending part as a qualified index of the bending test; and
performing a salt spray test, namely performing the salt spray test on the surface of the plastic film for 240 hours by using a sodium chloride aqueous solution with the concentration of 5%, wherein the salt spray test is qualified index by using the plastic film surface without bubbles and shedding phenomena and the average corrosion depth of not more than 3 mm;
wherein the criteria that the routine performance test qualifies are configured to: and the first appearance test, the first color test, the gloss test, the impact test, the adhesion test, the hardness test, the bending test and the salt spray test which are selected by the conventional performance detection all reach qualified indexes.
8. The method of claim 7, wherein the poaching resistance test optionally comprises at least one of the adhesion test, the impact test, and a second appearance test, wherein the second appearance test is a pass indicator of the second appearance test as no blistering, cracking, or peeling of the surface of the plastic film;
wherein the qualification criteria of the boiling resistance test is configured to: and the adhesive force test, the impact test and the second appearance test which are selected by the boiling resistance performance detection all reach qualified indexes.
9. The method of claim 8, wherein the step of testing the plastic film surface for high temperature resistance comprises:
preserving the heat of the surface of the plastic film for 1 hour at 245-255 ℃, putting the plastic film into a water bath at 10-20 ℃ for cooling, and performing first high temperature resistance detection on the surface of the plastic film after circulating for 10 times;
the first high-temperature resistance detection optionally comprises at least one of a second appearance test, an impact test, an adhesion test, a second color test and a gloss retention test, wherein the gloss retention test takes that the gloss retention of the surface of the plastic film is more than 60% as a qualified index of the gloss retention test, and the second color test takes that the color difference delta E between the color of the surface of the plastic film and the color of the sample plate is less than or equal to 2.50 as a qualified index of the second color test;
wherein the qualification criteria of the first high temperature resistance test is configured to: and the second appearance test, the impact test, the adhesive force test, the second color test and the light-retaining rate test which are selected by the first high-temperature resistance performance test all reach qualified indexes.
10. The method of claim 9, wherein the step of testing the plastic film surface for high temperature resistance further comprises:
after the first high-temperature resistance performance detection is qualified, preserving the heat of the surface of the plastic film for 1 hour in an environment of 275-285 ℃, putting the surface of the plastic film into a water bath of 10-20 ℃ for cooling, and performing second high-temperature resistance performance detection on the surface of the plastic film after circulating for 3 times;
the second high temperature resistance test optionally comprises at least one of the second appearance test and the adhesion test;
wherein the qualification criteria of the second high temperature resistance performance test is configured as: and the second appearance test and the adhesive force test selected by the second high-temperature resistance performance test both reach qualified indexes.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106065266A (en) * | 2016-06-08 | 2016-11-02 | 合肥市燕美粉末涂料有限公司 | A kind of microwave oven external surface heat resistant powder coating and preparation method thereof |
| CN106584033A (en) * | 2016-12-22 | 2017-04-26 | 杨文举 | Forming method of cavity of microwave oven or toaster |
| CN106800873A (en) * | 2017-01-25 | 2017-06-06 | 山东凯盛新材料股份有限公司 | Metal base scratch-resistant, high temperature resistant do not glue smooth priming coat |
| CN109749588A (en) * | 2018-12-26 | 2019-05-14 | 江南载福粉末涂料（张家港）有限公司 | A kind of domestic ovens spraying environment-friendly type thermostable powdery paints |
-
2021
- 2021-03-30 CN CN202110342539.5A patent/CN115141534A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106065266A (en) * | 2016-06-08 | 2016-11-02 | 合肥市燕美粉末涂料有限公司 | A kind of microwave oven external surface heat resistant powder coating and preparation method thereof |
| CN106584033A (en) * | 2016-12-22 | 2017-04-26 | 杨文举 | Forming method of cavity of microwave oven or toaster |
| CN106800873A (en) * | 2017-01-25 | 2017-06-06 | 山东凯盛新材料股份有限公司 | Metal base scratch-resistant, high temperature resistant do not glue smooth priming coat |
| CN109749588A (en) * | 2018-12-26 | 2019-05-14 | 江南载福粉末涂料（张家港）有限公司 | A kind of domestic ovens spraying environment-friendly type thermostable powdery paints |
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Application publication date: 20221004 |