CN112137425A

CN112137425A - Container body and cooking utensil

Info

Publication number: CN112137425A
Application number: CN202010598714.2A
Authority: CN
Inventors: 袁华庭; 瞿义生; 张明
Original assignee: Wuhan Supor Cookware Co Ltd
Current assignee: Wuhan Supor Cookware Co Ltd
Priority date: 2019-06-28
Filing date: 2020-06-28
Publication date: 2020-12-29
Also published as: CN212678952U; CN212698555U; CN213097530U; CN213097532U; CN212698558U; CN212698556U; CN213551277U; CN212698557U; CN212815912U

Abstract

The invention relates to the technical field of cooking appliances, in particular to a container body and a cooking appliance. The container body, comprising: a substrate; the middle rough layer is arranged on the inner surface of the base body; the non-stick layer is arranged on the middle rough layer; the non-stick layer comprises a non-stick coating, an inorganic porous material and/or a self-lubricating material, and the inorganic porous material and/or the self-lubricating material accounts for 1% -20% of the non-stick layer. The bonding force between the non-stick layer and the base body can be increased, the wear resistance can be enhanced, the durable non-stick service life is good, and the actual experience feeling of consumers is improved.

Description

Container body and cooking utensil

Technical Field

The invention relates to the technical field of cooking appliances, in particular to a container body and a cooking appliance.

Background

In the conventional cooker and household appliance industry, in order to make the product non-stick to food, a non-stick material with non-stick property is usually disposed on the surface of the product, so as to obtain a non-stick utensil. For example, the existing non-stick pans are largely classified into two types, one being a non-stick pan sprayed with a fluorine paint such as a Polytetrafluoroethylene (PTFE) paint, and the other being a non-stick pan sprayed with a ceramic paint. The initial non-stick effect of the two types of non-stick pans is good, but both the non-stick pans and the non-stick pans rely on a thin surface coating layer, so that the non-stick effect is difficult to achieve for a long time, and in addition, the existing non-stick coating with the surface being more than ten microns thick is easily worn, scratched and polluted in the using process, so that the non-stick property is reduced until the non-stick effect is lost, and the service life is short.

Disclosure of Invention

The invention aims to provide a container body and a cooking utensil, wherein the non-stick layer of the container body has good lasting non-stick life, is beneficial to improving the actual experience of consumers, and can overcome or at least partially solve the technical problems in the prior art.

In order to achieve the purpose, the invention adopts the technical scheme that:

according to one aspect of the present invention, there is provided a container body comprising:

a substrate;

the middle rough layer is arranged on the inner surface of the base body;

the non-stick layer is arranged on the middle rough layer;

the non-stick layer comprises a non-stick coating and an inorganic porous material and/or a self-lubricating material, and the inorganic porous material and/or the self-lubricating material accounts for 1% -20% of the non-stick layer.

The non-stick paint in the non-stick layer enables the container body to have non-stick performance; and because the crystals of the inorganic porous material and the self-lubricating material are stable and have high melting points, the heat stability and the high temperature resistance of the coating are improved after the inorganic porous material and the self-lubricating material are added in the non-stick coating; in the long-term cooking process, even if the influence of long-term high temperature is caused, the structure of the coating is stable, the change of substances is not easy to occur, and the aging is not easy to occur. In addition, the inorganic porous material and the self-lubricating material have high hardness and high mechanical strength, and after the inorganic porous material and the self-lubricating material are added in the non-stick coating, the hardness of the coating is improved, and abrasion and scratch caused by long-term use are relieved. In addition, the inorganic porous material has non-stick performance due to the low surface energy and the porous oil absorption characteristic, and the self-lubricating material has the non-stick performance due to the self-lubricating and porous oil absorption characteristics formed by the lamellar crystals, so that the non-stick layer has certain non-stick performance and meets the non-stick mechanism. Therefore, after the non-stick coating is aged and scratched, the non-stick performance of the non-stick coating is reduced or disappears, the inorganic porous material and the self-lubricating material in the coating can continuously exert the non-stick performance and can delay abrasion, so that the cooking utensil can still have the non-stick effect for a long time, the durability of the cooking utensil is effectively improved, and the service life of the cooking utensil is prolonged. Meanwhile, the inorganic porous material and/or the self-lubricating material account for 1% -20% of the non-stick layer, and within the range, not only the film forming performance and the construction performance are not influenced, but also the effect of prolonging the non-stick life can be ensured.

And a middle rough layer is arranged between the non-stick layer and the substrate, the middle rough layer has a certain rough structure, so that a concave-convex structure can be formed on the surface of the final cooker, the concave-convex structure can reduce the contact between the turner and the non-stick layer, when the turner is contacted with the non-stick layer, the turner can only be contacted with a small part of tips in wave crests and can slide, the turner can not be contacted with other parts such as wave troughs, the non-stick layer can be prevented from being scraped, the non-stick layer is protected from being easily scraped, the scraping resistance and the wear resistance of the non-stick layer are further improved, and the non-stick layer is not easily damaged or scraped under the condition of long-term use and cleaning, so that the effect of enhancing the. And, this middle level coarse level can also play the effect of connecting non-stick layer and base member, utilizes the concave-convex structure of this middle level coarse level, has increased roughness, can make base member and middle coarse level cooperation paste tightly, and non-stick layer's adhesive force is stronger, has improved the joint strength between non-stick layer and the middle coarse level, and then can promote the cohesion between non-stick layer and the base member by a wide margin, further promotes lasting non-stick life.

Therefore, the container body has good lasting non-stick performance by adopting the non-stick layer containing the inorganic porous material and/or the self-lubricating material and the middle rough layer, the wear resistance of the non-stick layer is excellent, the non-stick layer is not easy to scratch, the binding force between the non-stick layer and the base body is strong, the non-stick layer is not easy to fall off, and the use experience of a user is remarkably improved.

In a possible design, the middle rough layer is a concave-convex surface arranged on the surface of the base body, the concave-convex surface comprises a plurality of protrusions, and the area of the cross section of each protrusion is 0.04-1 mm²；

The distance between two adjacent protrusions is 0.08-0.4 mm.

By means of the dimensioning of the projections, it is ensured that the desired wear resistance and permanent non-stick properties are achieved. When the cross section of the convex part is too large or the distance between two adjacent convex parts is too small, the food material or the pancake turner is in large-area contact with the convex part, and adhesion or abrasion can still be caused; when the cross section of the protruding part is too small, or the distance between two adjacent protruding parts is too large, the strength of the protruding part is too small or the stress is too large, so that the protruding part is easy to break integrally and fall off.

In one possible design, the total cross-sectional area of the plurality of projections is 40% to 60% of the cross-sectional area of the concave-convex surface.

Within this range, the cross-sectional area of the projection can be made appropriate, the overall strength of the projection can meet the use requirements, and the projection can be prevented from being broken in a certain direction due to an excessively small dimension of the projection in the certain direction in the cross-section.

In a possible design, the middle rough layer is a concave-convex surface arranged on the surface of the base body, the concave-convex surface comprises a plurality of protrusions, the width of the cross section of each protrusion is 0.1-1 mm, and the total cross section area of the protrusions accounts for 40% -60% of the cross section area of the concave-convex surface.

Thus, with the above arrangement, it is possible to ensure that the intended technical effect is achieved within the data range. If the density of the convex parts is too small, the smooth groove areas among the convex parts cannot be protected, and the convex parts are easy to scratch, damage and fall off; if the density of the convex part is too large, the area of the groove area is small, the effect of enhancing the lasting non-adhesiveness is weak, and the groove is too narrow, so that the pollution dirt attached inside is not easy to clean, and the use experience is influenced.

In a possible design, the concave-convex surface further comprises a plurality of concave parts, and the value range of the height difference between the highest part of each convex part and the lowest part of each concave part is 0.02-0.1 mm.

Therefore, the height range can play a role in prolonging the lasting non-stick service life, and can also avoid the problems of reduced non-stick property, large contact resistance with a slice and inconvenient use caused by too large roughness.

In one possible design, the cross-sectional shape of the protrusion in a direction perpendicular to the base includes a cone, a semicircle, a semi-ellipse, a triangle, a square, and a combination thereof.

The cross-sectional shape of the convex part in the direction parallel to the base body comprises a square shape, a diamond shape, a circular shape, an oval shape, a triangular shape, a pentagonal shape, a hexagonal shape and a combination thereof.

Therefore, the shape structure of the protruding part is enriched, the shape structure of the protruding part can be designed to be diversified, the flexibility is good, and the universality is high.

In one possible design, the intermediate rough layer is a hard oxide layer, an etch layer, a thermal spray coating, or a cold spray coating.

In practical application, different intermediate rough layers can be selected and designed according to different types of base materials or actual requirements, and processing and manufacturing are facilitated.

In one possible embodiment, the thermal spray coating or the cold spray coating is a metal layer, an alloy layer or a ceramic layer.

Therefore, the coating is beneficial to enhancing the wear resistance and prolonging the non-stick life, can be used as an anticorrosive layer to enhance the corrosion resistance, and can also play a role in improving the binding force.

In one possible design, the thermal spray coating or the cold spray coating comprises the following materials: iron and its alloys, zinc and its alloys, titanium and its alloys, zirconium and its alloys, chromium and its alloys, nickel and its alloys, cobalt and its alloys, copper and its alloys, zirconium and its alloys, yttrium and its alloys, molybdenum and its alloys, vanadium and its alloys, titanium carbide, titanium nitride, titanium diboride, silicon carbide, tungsten carbide, silicon nitride, boron nitride, titanium oxide, zirconium oxide, aluminum oxide or titanium suboxide.

By adopting the spraying materials, a layer of high-hardness metal powder, alloy powder or ceramic powder is sprayed on the surface of the matrix in a thermal spraying or cold spraying mode to serve as a wear-resistant intermediate rough layer, so that the hardness can be improved, the substrate is prevented from deforming and damaging the non-stick layer, the wear resistance and the corrosion resistance can be enhanced, and a structure with concave-convex surface can be provided.

In one possible design, the non-adhesive layer completely covers the surface of the intermediate rough layer, or a part of the intermediate rough layer is exposed out of the non-adhesive layer.

In one possible design, the material of the substrate includes aluminum, aluminum alloys, titanium alloys, iron, stainless steel, and composites thereof.

In one possible design, the non-stick layer comprises an inorganic porous material and a self-lubricating material, the ratio of the inorganic porous material to the self-lubricating material being 0.5: 1 to 5: 1.

in one possible design, the non-stick coating is a ceramic coating, the non-stick layer comprising at least a first coating layer and a second coating layer;

wherein the inorganic porous material and/or the self-lubricating material accounts for 2% -5% of the first coating;

and/or the inorganic porous material and/or the self-lubricating material accounts for 3% -8% of the second coating layer.

In one possible design, the non-stick coating is a fluorine-containing coating, and the non-stick layer comprises at least a first coating layer and a second coating layer;

wherein the inorganic porous material and/or the self-lubricating material accounts for 5-15% of the first coating;

and/or the inorganic porous material and/or the self-lubricating material accounts for 5-10% of the second coating layer.

Further, the container body still includes the face oil layer, the face oil layer cover on the non-stick layer, further, the face oil layer cover is in on the second coating. The surface oil layer can be made of the existing non-stick coating, such as the existing fluorine-containing coating and the like.

In one possible design, the non-stick layer has a porosity of 0.5% to 15%. The reasonable porosity of the non-stick layer can reduce stress concentration and avoid the generation of coating cracks.

In one possible design, the inorganic porous material comprises a mixture of one or more of diatomaceous earth, bentonite, or zeolite;

and/or the self-lubricating material comprises one or more of graphite, graphite fluoride or molybdenum disulfide.

In one possible design, the particle size of the inorganic porous material and/or the self-lubricating material is 300-2000 meshes. Within the range, the inorganic porous material and/or the self-lubricating material can be uniformly dispersed in the non-stick coating, so that the surface of the finally formed non-stick layer is smooth and has no granular feel.

In one possible design, the roughness of the intermediate rough layer has an Rz value of 10 to 50 μm. Within the range, the cost is reduced, the durable non-stick performance is ensured, the wear-resistant and scratch-resistant effects can be achieved, and the phenomenon that the surface of the pan is too rough to influence the stir-frying use of the turner is avoided.

According to another aspect of the present invention, there is provided a cooking appliance comprising a container body as described above.

The cooking appliance provided by the present application includes the container body, has all the features and advantages of the container body described previously, and is not described herein again.

Drawings

FIG. 1 is a schematic structural view of a container body provided in an exemplary embodiment of the present application;

FIG. 2 is a schematic cross-sectional view of a partial structure of a container body according to an exemplary embodiment of the present application;

FIG. 3 is a schematic cross-sectional view of a partial structure of a container body according to another exemplary embodiment of the present application;

FIG. 4 is a schematic cross-sectional view of a partial structure of a container body according to another exemplary embodiment of the present application;

FIG. 5 is a schematic structural view of a container body provided in accordance with another exemplary embodiment of the present application;

FIG. 6 is a schematic view of a distribution of lobes provided in another exemplary embodiment of the present application;

FIG. 7 is a schematic view of a shape of a boss provided in an exemplary embodiment of the present application;

FIG. 8 is a schematic view of a shape of a boss provided in another exemplary embodiment of the present application;

fig. 9 is a schematic view of a shape of a convex portion provided in another exemplary embodiment of the present application.

Reference numerals:

1-container body;

10-a substrate;

20-an intermediate rough layer; 201-concave-convex surface; 2011-raised portion; 2012-recess;

30-non-stick layer.

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.

Detailed Description

In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be clearly and completely described below with reference to the drawings and the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by those skilled in the art without any creative effort based on the technical solutions and the given embodiments provided in the present application belong to the protection scope of the present application. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.

The endpoints of the ranges and any values disclosed herein are not limited to the precise range or value, and such ranges or values should be understood to encompass values close to those ranges or values. For numerical ranges, one or more new numerical ranges may be obtained by combining the individual values, or by combining the individual values.

It should be noted that the term "and/or"/"used herein is only one kind of association relationship describing associated objects, and means that there may be three relationships, for example, a and/or B, and may mean: a exists alone, A and B exist simultaneously, and B exists alone. As used in the examples of this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

In one embodiment, the present application is described in further detail below with reference to specific embodiments and with reference to the attached drawings.

An embodiment of the present application provides a cooking appliance including a container body.

Specifically, the cooking appliance may be various common cooking devices, the cooking appliance may include a container body and may further include a cover body, and the specific type of the cooking appliance is not limited in the embodiments of the present application. For example, the cooking utensil may be a non-stick pan, a frying pan, a pan, an electric cooker, a pressure cooker, an electric pressure cooker, a baking tray, or the like.

Referring to fig. 1 to 9, an embodiment of the present application provides a container body 1 including:

a base body 10;

an intermediate rough layer 20 provided on the inner surface of the base 10;

a non-stick layer 30 disposed on the intermediate rough layer 20;

the non-stick layer 30 comprises a non-stick coating and an inorganic porous material and/or a self-lubricating material, and the inorganic porous material and/or the self-lubricating material accounts for 1% -20% of the non-stick layer 30.

On the one hand, the non-stick paint in the non-stick layer 30 gives the container body 1 non-stick properties; and because the crystals of the inorganic porous material and the self-lubricating material are stable and have high melting points, the heat stability and the high temperature resistance of the coating are improved after the inorganic porous material and the self-lubricating material are added in the non-stick coating; in the long-term cooking process, even if the influence of long-term high temperature is caused, the structure of the coating is stable, the change of substances is not easy to occur, and the aging is not easy to occur. In addition, the inorganic porous material and the self-lubricating material have high hardness and high mechanical strength, and after the inorganic porous material and the self-lubricating material are added in the non-stick coating, the hardness of the coating is improved, and abrasion and scratch caused by long-term use are relieved. In addition, the inorganic porous material has non-stick property due to the low surface energy and the porous oil absorption characteristic, and the self-lubricating material has non-stick property due to the self-lubricating and porous oil absorption characteristics formed by the lamellar crystal, so that the non-stick layer 30 has certain non-stick property and meets the non-stick mechanism. Therefore, even if the non-stick coating in the non-stick layer 30 falls off due to aging or long-term use, the inorganic porous material and/or the self-lubricating material in the non-stick layer 30 can still exert the non-stick performance and can delay abrasion, so that the cooking utensil can still have the non-stick effect for a long time, the durability of the cooking utensil is effectively improved, and the service life of the cooking utensil is prolonged.

Meanwhile, the inorganic porous material and/or the self-lubricating material account for 1% -20% of the non-stick layer, and within the range, not only the film forming performance and the construction performance are not influenced, but also the effect of prolonging the non-stick life can be ensured.

On the other hand, the middle rough layer 20 is arranged between the non-stick layer 30 and the substrate 10, the middle rough layer 20 has a certain rough structure, a concave-convex structure can be formed on the surface of the final cooker, the concave-convex structure can reduce the contact between the slice and the non-stick layer, when the slice is in contact with the non-stick layer 30, the slice can only be in contact with a small part of tips in wave crests and can slide, the slice cannot be in contact with other parts such as wave troughs, the non-stick layer 30 can be prevented from being shoveled off, the non-stick layer 30 is protected from being easily scratched, the scratch resistance and the wear resistance of the non-stick layer 30 are further improved, and the non-stick layer 30 cannot be easily damaged or scratched under the condition of long-term cleaning, so that the effect of enhancing the wear resistance can. And, this middle level coarse layer 20 can also play the effect of connecting non-stick layer 30 and base member 10, utilize the concave-convex structure of this middle level coarse layer 20, increased roughness, can make base member 10 and middle coarse layer 20 cooperation paste, non-stick layer 30's adhesive force is stronger, the joint strength between non-stick layer 30 and middle coarse layer 20 has been improved, and then can promote the cohesion between non-stick layer 30 and the base member 10 by a wide margin, further promote lasting non-stick life.

Therefore, the container body 1 has good lasting non-stick performance by adopting the non-stick layer 30 containing inorganic porous materials and/or self-lubricating materials and the middle rough layer 20, the non-stick layer 30 is excellent in wear resistance and not prone to being scratched, the binding force between the non-stick layer 30 and the base body 10 is strong, the non-stick layer is not prone to falling off, and the use experience of a user is remarkably improved.

It will be appreciated that the material of the non-stick layer may comprise an inorganic porous material, or may comprise a self-lubricating material, or may comprise both an inorganic porous material and a self-lubricating material. The inorganic porous material and/or the self-lubricating material accounts for 1% to 20% of the non-stick layer, and may be, for example, typically but not limited to, 1%, 2%, 3%, 4%, 5%, 6%, 7%, 8%, 9%, 10%, 11%, 12%, 13%, 14%, 15%, 18%, 20%, and any value in a range of any two of these points.

Herein, percentages, ratios or parts referred to are by mass unless otherwise indicated. For example, 1 to 20% by weight, may be expressed as 1 to 20% by weight. All references to percentages (including mass percentages) in the present invention are to the total mass of the composition, unless otherwise specified. That is, the percentages (%) both refer to mass percentages relative to the composition.

In the container body 1, the material of the base body 10 can be selected in various ways, and the variety of the material of the base body 10 is enriched. Illustratively, in some embodiments, the material of the substrate 10 includes aluminum, aluminum alloys, titanium alloys, iron, stainless steel, and composites thereof. Of course, the material of the substrate 10 is not limited to this, but may also include materials such as copper, copper alloy, ceramics, graphite, and the like.

Alternatively, the material of the substrate 10 may be aluminum, aluminum alloy, or a composite sheet thereof with metal. The aluminum/aluminum alloy base body is beneficial to reducing the weight of the container body and meets the requirements of quick heating, uniform heat transfer and the like.

Alternatively, the material of the substrate 10 may be stainless steel or a composite sheet of stainless steel and other metals. The stainless steel base body is adopted to meet the requirements of good appearance or other requirements of the outer surface of the pot body, and the cost is lower.

Alternatively, the material of the substrate 10 may be titanium, titanium alloy, and composite sheet with other metals. The titanium/titanium alloy base body is beneficial to reducing the weight of the container body, and has better corrosion resistance and easy cleaning.

The inner surface of the substrate 10 is a surface in contact with the intermediate rough layer, and the inner surface of the substrate 10 may have a microscopic roughness structure, or may be smooth and have no microscopic roughness structure.

For example, as shown in fig. 2, the inner surface of the substrate 10 may have a microscopic concavo-convex structure.

As shown in fig. 3, the inner surface of the substrate 10 may not have a microscopic uneven structure.

Further, as shown in fig. 1 to 5, the intermediate rough layer 20 may also be referred to as a primer layer, which may be formed by pressing or etching on the surface of the substrate 10, that is, the intermediate rough layer 20 is formed at a portion of the substrate 10 at the surface thereof. Alternatively, the intermediate rough layer 20 may be formed of a spray material. The intermediate rough layer 20 may cover the entire inner surface of the base 10 or may partially cover the inner surface of the base 10.

Specifically, the intermediate rough layer 20 may be formed by stamping, etching or casting with a mold to form concave-convex patterns on the surface; alternatively, a layer of high hardness metal powder or ceramic powder is first sprayed on the inner surface of the substrate by a thermal spraying method to form a wear-resistant intermediate rough layer, and then a non-stick layer 30 is further sprayed on the surface of the intermediate rough layer 20. Wherein the wear resistant intermediate rough layer 20 performs the following functions: the surface hardness of a base material is improved, the base material is prevented from deforming and damaging the non-stick layer, the base material can be used as an anticorrosive layer to enhance the corrosion resistance, and a structure with concave-convex surface can be provided, so that the concave-convex structure is formed on the surface of the container body finally, the wear resistance is enhanced, and the non-stick service life is prolonged; and fourthly, the friction can be increased, the adhesion capability of the non-stick layer 30 is improved, the function of adhering or connecting the substrate 10 and the non-stick layer 30 can be achieved, and the binding force between the substrate 10 and the non-stick layer 30 is enhanced. The non-stick layer 30 may include a conventional ceramic paint or a fluorine-containing paint, and a certain proportion of an inorganic porous material and/or an inorganic self-lubricating material is added thereto, and when the non-stick property of the fluorine-containing paint or the ceramic paint itself is reduced to a certain extent or disappears due to abrasion and falling off of the surface oil, a film layer (a second coating or a first coating) containing the inorganic porous material and/or the inorganic self-lubricating material is exposed, so that the non-stick effect of the inorganic porous material is exerted, and the lasting non-stick life of the paint is prolonged.

When the material of the base body comprises aluminum and aluminum alloy, the base body needs to be subjected to hard oxygen treatment to improve the surface hardness of the base material; when the base material is other metal or alloy material such as stainless steel, the hard oxygen treatment may not be performed.

The intermediate rough layer 20 can also form a concave-convex structure on the surface of the matrix by embossing, etching, sand blasting, shot blasting and laser etching, and can play a role in improving the binding force. If the material of the substrate is aluminum or aluminum alloy, the substrate needs to be treated with hard oxygen to improve the surface hardness of the substrate.

Specifically, regarding the intermediate rough layer 20, as shown in fig. 1 and 4, in some embodiments, the intermediate rough layer 20 is a concave-convex surface 201 disposed on the surface of the substrate 10, the concave-convex surface 201 includes a plurality of convex portions 2011, and the cross-sectional area of each convex portion 2011 is 0.04 to 1mm²Preferably 0.1 to 0.9mm²More preferably 0.2 to 0.8mm²(ii) a Typically, but not limitatively, the area of the cross-section of the single protrusion 2011 may be, for example, 0.04mm²、0.05mm²、0.1mm²、0.2mm²、0.4mm²、0.5mm²、0.8mm²、1mm²And any value in the range of any two of these point values.

The distance d1 between two adjacent protrusions 2011 is 0.08 to 0.4mm, preferably 0.08 to 0.4mm, and more preferably 0.08 to 0.4mm, and typically, but not limited to, the distance d1 between two adjacent protrusions 2011 may be, for example, any value in a range of 0.08mm, 0.09mm, 0.1mm, 0.12mm, 0.15mm, 0.2mm, 0.25mm, 0.3mm, 0.4mm, and any two of these point values.

By adjusting the size of the protrusions 2011 and further adjusting and optimizing the area of the protrusions 2011 and the spacing between adjacent protrusions 2011, it is possible to ensure that the desired wear resistance and permanent non-stick properties are achieved. When the cross section of the protruding portion 2011 is too large, or the distance between two adjacent protruding portions 2011 is too small, food materials or a slice make large-area contact with the protruding portion 2011, and adhesion or abrasion can still be caused; when the cross section of the protruding portion 2011 is too small, or the distance between two adjacent protruding portions 2011 is too large, the strength of the protruding portion 2011 is too small or the stress is too large, and the protruding portion 2011 is prone to being broken integrally and falling off.

In some embodiments, the total cross-sectional area of the plurality of protrusions 2011 comprises 40% to 60%, preferably 42% to 58%, and more preferably 45% to 55% of the cross-sectional area of the concave-convex surface 201; typically, but not by way of limitation, the total cross-sectional area of plurality of protrusions 2011 may account for, for example, 40%, 42%, 45%, 48%, 50%, 52%, 55%, 58%, 60%, and any value in the range of any two of these point values, of the cross-sectional area of concave-convex surface 2011.

Further, the intermediate rough layer 20 is an uneven surface 201 disposed on the surface of the substrate, the uneven surface 201 includes a plurality of protrusions 2011, a width W1 of a cross section of each protrusion 2011 is 0.1 to 1mm, preferably 0.1 to 0.9mm, and more preferably 0.2 to 0.8mm, and typically, but not limited thereto, a distance d1 between two adjacent protrusions 2011 may be, for example, any value in a range of 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 1mm, and any two of these values. That is, the edge of the cross section of the projection 2011, the minimum dimension between any two points is not less than 0.1mm, and the maximum dimension between any two points is not more than 1 mm; within this range, the cross-sectional area of the projecting portion 2011 is appropriate, the overall strength of the projecting portion 2011 can meet the use requirement, and the projecting portion 2011 is prevented from being broken in a certain direction due to an excessively small size of the projecting portion 2011 in the cross-sectional area.

The total cross-sectional area of the plurality of protrusions 2011 accounts for 40% to 60%, preferably 42% to 58%, and more preferably 45% to 55% of the cross-sectional area of the concave-convex surface 201; typically, but not by way of limitation, for example, 40%, 42%, 45%, 48%, 50%, 52%, 55%, 58%, 60%, and any value in the range of any two of these point values.

Thus, with the above arrangement, it is possible to ensure that the intended technical effect is achieved within the data range. If the density of the protrusions 2011 is too low, the smooth groove regions between the protrusions 2011 cannot be protected, and are easily scratched, damaged, or dropped; if the density of the protruding portions 2011 is too large, the area of the groove area is small, the effect of enhancing the lasting non-adhesiveness is weak, and the groove is too narrow, so that the pollution dirt attached to the inside is not easy to clean, and the use experience is influenced.

In some embodiments, the concave-convex surface 201 further includes a plurality of concave portions 2012, and a height difference (height H1) between a highest position of each convex portion 2011 and a lowest position of each concave portion 2012 ranges from 0.02mm to 0.1mm, preferably ranges from 0.03mm to 0.1mm, and further preferably ranges from 0.04mm to 0.08 mm; that is, height H1 of protrusions 2011 may be 0.02 to 0.1mm, and height H1 of phase protrusions 2011 may be, for example, typically but not by way of limitation, any value within a range of 0.02mm, 0.03mm, 0.04mm, 0.05mm, 0.06mm, 0.07mm, 0.08mm, 0.09mm, 0.1mm, and any two of these point values. Therefore, the height range can play a role in prolonging the lasting non-stick service life, and can also avoid the problems of reduced non-stick property, large contact resistance with a slice and inconvenient use caused by too large roughness.

In some embodiments, the roughness of the intermediate rough layer 20 has an Rz value of 10 μm to 50 μm, preferably 15 μm to 45 μm, and more preferably 20 μm to 40 μm; typically, but not by way of limitation, the Rz value of the roughness of the intermediate rough layer 20 may be, for example, any value in the range of 10 μm, 15 μm, 20 μm, 25 μm, 30 μm, 35 μm, 40 μm, 45 μm, 50 μm, and any two of these point values. Within the range, the cost is reduced, the durable non-stick performance is ensured, the wear-resistant and scratch-resistant effects can be achieved, and the phenomenon that the surface of the pan is too rough to influence the stir-frying use of the turner is avoided. On one hand, the Rz value of the roughness of the middle rough layer is too small, and the roughness can be realized only by carrying out post-treatment on the middle rough layer, so that the process complexity is increased, and the cost is increased. On the other hand, the Rz value of the roughness of the middle rough layer is too large, so that the roughness of the inner surface of the final frying pan is large, the resistance in the frying process is large, the non-stickiness is poor, and the use experience of consumers is influenced finally.

The roughness of the intermediate rough layer 20 may be represented by an Ra value, and the range of the Ra value may be 3 μm to 10 μm. Within the range, the function of improving the binding force with the non-stick layer can be achieved, the process can be easily realized, and the phenomenon that the surface of the pan is too rough to influence the use of the turner in stir-frying can be avoided.

Further, in some embodiments, the intermediate rough layer 20 may also be a hard oxide layer, an etch layer, or a spray coating, wherein the spray coating may be a thermal spray coating or a cold spray coating.

Further, the inner surface of the substrate may be formed with a uniformly distributed relief pattern by stamping, etching or casting, wherein the pattern is in the form of dots or rings, and in some embodiments, the pattern may be a ring, as shown in fig. 6. The relief pattern may be distributed locally or globally, and the relief pattern may include a plurality of protrusions 2011. The raised portions 2011 may be arranged in a mesh shape to ensure that the shovel does not contact the non-stick layer.

For example, the concave-convex structure may be distributed on the whole surface of the substrate, or may be a part of the surface of the substrate. For example, concave-convex structure can distribute in pan bottom to wall part half department, and this region is main use area, and is high to the wearability requirement, therefore, can distribute concave-convex structure in pan bottom to wall part half department and be more favorable to improving the wearability, the extension is not stained with life.

Furthermore, after the concave-convex structure patterns are manufactured on the surface of the base body, sand blasting treatment needs to be carried out on the concave-convex structure patterns, so that the bonding force between the base body material and the non-stick layer can be further enhanced.

When the base material comprises aluminum/aluminum alloy, after sand blasting treatment, hard oxidation treatment is needed to form a hard oxygen film layer, so that the hardness of the aluminum/aluminum alloy base material is improved, the wear resistance of the container body is enhanced, and the durable non-stick service life is prolonged.

Alternatively, the protrusions 2011 may be distributed discretely, or may be distributed regularly or randomly irregularly.

Further, as shown in fig. 7 to 9, the shape structure of the protruding portion 2011 may be various types, and in some embodiments, the cross-sectional shape of the protruding portion 2011 in the direction perpendicular to the base includes a cone shape, a semi-circle shape, a semi-ellipse shape, a triangle shape, a square shape, and a combination thereof; of course, the cross-sectional shape structure of the projection 2011 in the direction perpendicular to the base is not limited thereto, and may include other shape structures such as a trapezoid, an irregular shape, and the like. As shown in fig. 7, 8, or 9, the cross-sectional shape of the protruding portion 2011 in the direction parallel to the base body includes a square shape, a diamond shape, a circular shape, an oval shape, a triangular shape, a pentagonal shape, a hexagonal shape, or other polygonal shapes, a polygonal ring shape, and a combination thereof, that is, the shape of the plurality of protruding portions may be only one type, or two or more types may exist at the same time; further, the sectional shape of the projection 2011 in the direction parallel to the base is not limited thereto, and may include other regular or irregular shape structures.

In some embodiments, the top of the protrusion 2011 is an arc profile, and further, the top surface of the protrusion 2011 may be an arc surface. Therefore, during cooking, the turner is smoother when being turned and fried.

In some embodiments, when the intermediate rough layer 20 is a thermal spray coating, the thermal spray coating method may be, in particular, an arc spray coating, a flame spray coating, a plasma spray coating, or other thermal spray coating method. The intermediate rough layer may be produced by thermal spraying as described above and may be made to cover the entire inner surface of the substrate.

The middle rough layer 20 is a middle rough layer with a concave-convex structure, enhances the wear resistance, prolongs the non-stick service life, can be used as an anticorrosive layer, enhances the corrosion resistance, and can also play a role in improving the binding force.

Illustratively, when the intermediate rough layer 20 is a thermal spray coating, a plasma spraying method is preferably used, which has a wide application range and easily controlled roughness. Specifically, when the intermediate rough layer is manufactured by using a plasma spraying method, the method specifically includes the following steps:

A. the surface of the substrate is pretreated, for example, the surface is cleaned and roughened to enhance the bonding force between the substrate and the non-stick layer;

B. filling the powder of the intermediate coarse layer material with about 300-500 meshes into a powder feeder, wherein the powder feeding speed can be 10-40 g/min;

C. the spraying distance can be 140-160 mm;

D. the arc current can be 450-650A;

E. the hydrogen pressure can be 0.4-0.9 MPa, the flow can be 5-10L/min, the argon pressure can be 0.4-0.9 MPa, and the flow can be 35-80L/min.

Under the above parameters, the high pressure plasma flame stream formed at the muzzle heats the powder material to melt and then deposits on the substrate surface, forming the intermediate rough layer 20.

In some embodiments, the spray coating may be a metal layer, an alloy layer, or a ceramic layer.

Specifically, the material of the sprayed layer may be a high-hardness metal, alloy, or ceramic. For example, the material of the spray coating may be iron and its alloys, zinc and its alloys, titanium and its alloys, chromium and its alloys, nickel and its alloys, cobalt and its alloys, copper and its alloys, zirconium and its alloys, yttrium and its alloys, molybdenum and its alloys, vanadium and its alloys, titanium carbide, titanium nitride, titanium diboride, silicon carbide, tungsten carbide, silicon nitride, boron nitride, titanium oxide, zirconium oxide, aluminum oxide, titanium suboxide, and the like.

By adopting the spraying materials, a layer of high-hardness metal powder, alloy powder or ceramic powder is sprayed on the surface of the matrix 10 as the wear-resistant intermediate rough layer 20 in a thermal spraying or cold spraying mode, so that the hardness can be improved, the substrate is prevented from deforming and damaging the non-stick layer 30, the wear resistance and the corrosion resistance can be enhanced, and a structure with concave-convex surface can be provided.

In some embodiments, the particle size of the material of the spray coating is in the range of 25 μm to 100 μm, preferably 30 μm to 90 μm, and more preferably 40 μm to 80 μm; typically, but not by way of limitation, the particle size of the material of the spray coating may be, for example, any value in the range of 25 μm, 30 μm, 40 μm, 50 μm, 60 μm, 70 μm, 80 μm, 90 μm, 100 μm, and any two of these values. Specifically, the particle size range of the metal powder, the alloy powder or the ceramic powder is 25-100 μm, which contributes to cost reduction and ensures durable non-stick property. On one hand, when the particle size is less than 25 μm, the particle size powder with the size is difficult to prepare and has high cost; on the other hand, when the particle size is larger than 100 μm, the requirement on thermal spraying equipment is high, the roughness of the inner surface of the final frying pan is large, the resistance in the frying process is large, the non-stickiness is poor, and the use experience of consumers is influenced finally.

In some embodiments, the thickness of the intermediate rough layer 20 may be 10 μm to 300 μm, preferably 20 μm to 250 μm, and more preferably 30 μm to 200 μm; typically, but not limitatively, the thickness of the intermediate rough layer 20 may be, for example, any value in the range of 10 μm, 20 μm, 30 μm, 40 μm, 50 μm, 60 μm, 80 μm, 100 μm, 150 μm, 200 μm, 250 μm, 300 μm, and any two of these values. Within this range, it is possible to contribute to cost reduction and to ensure mechanical properties of the intermediate rough layer. If the thickness of the middle rough layer is less than 10 mu m, the process is difficult to realize; if the thickness of the intermediate rough layer is greater than 300 μm, the influence on the roughness is not great, but the internal stress is too large, which may cause a risk of chipping and increase the cost.

In some embodiments, as shown in fig. 1, the non-stick layer 30 may completely cover the surface of the intermediate rough layer 20; in other embodiments, as shown in fig. 5, a portion of the intermediate rough layer 20 is exposed to the non-stick layer 30.

Specifically, as shown in fig. 5, the non-stick layer 30 at the protruding portion 2011 may be removed, and the non-stick layer 30 at the recessed portion 2012 may be retained.

In the container body, the non-stick layer 30 may be a non-stick coating layer added with a certain proportion of inorganic porous material and/or self-lubricating material on the basis of the existing fluorine paint, ceramic paint and the like. That is, the non-stick paint in the non-stick layer 30 may be an existing fluorine paint, ceramic paint.

For example, in a particular embodiment, the non-stick coating is a fluorine-containing coating, that is, the non-stick layer 30 includes a fluorine-containing coating, an inorganic porous material, and/or a self-lubricating material. Alternatively, the non-stick coating is a ceramic coating and the non-stick layer 30 comprises a ceramic coating, an inorganic porous material, and/or a self-lubricating material.

Specifically, in some embodiments, the non-stick coating is a fluorine-containing coating, and the non-stick layer 30 comprises a fluorine-containing coating, an inorganic porous material, and/or a self-lubricating material; wherein, the addition amount of the inorganic porous material and/or the self-lubricating material can be 1-15%. On one hand, if the addition amount is more than 15%, the film forming property and the workability of the coating are obviously influenced; on the other hand, if the amount is less than 1%, the effect of prolonging the permanent tack-free life is not obtained.

Further, the non-stick layer 30 can be made in a multi-layer structure, such as a two-layer or three-layer structure; illustratively, the non-stick layer includes at least a first coating layer and a second coating layer, and the non-stick layer 30 is further provided with a top oil layer, wherein the first coating layer is arranged on the middle rough layer, the second coating layer is arranged on the first coating layer, and the top oil layer is arranged on the second coating layer; the inorganic porous material and/or the self-lubricating material may be added to the second coating layer and the first coating layer, and may not be added to the top oil layer.

Wherein, because the first coating and the second coating respectively play different roles, the proportion of the inorganic porous material and/or the self-lubricating material added can be slightly different when the inorganic porous material and/or the self-lubricating material is added into the first coating and the second coating according to requirements. For example, the inorganic porous material and/or the self-lubricating material may represent 5% to 15% of the first coating layer, and a typical but non-limiting content may be, for example, 5%, 6%, 7%, 8%, 9%, 10%, 11%, 12%, 13%, 14%, 15%, and the like.

Alternatively, the inorganic porous material and/or the self-lubricating material may constitute 5% to 10% of the second coating layer, and a typical but non-limiting content may be, for example, 5%, 5.5%, 6%, 6.5%, 7%, 7.5%, 8%, 8.5%, 9%, 9.5%, 10%, etc.

Or the inorganic porous material and/or the self-lubricating material accounts for 5-15% of the first coating layer, and simultaneously the inorganic porous material and/or the self-lubricating material accounts for 5-10% of the second coating layer. Under the condition, the function of the inorganic porous material and/or the self-lubricating material in the first coating layer and the second coating layer can be fully exerted.

It can be understood that, in practical application, according to actual conditions and corresponding requirements of different products, the proportion of the inorganic porous material and/or the self-lubricating material in the first coating layer is 5% to 15%, and the proportion of the inorganic porous material and/or the self-lubricating material in the second coating layer is 5% to 10%, which can be flexibly adjusted, and no further explanation or limitation is made. The protective non-stick layer with the multilayer composite structure can play a good role in protecting the base material, has the characteristics of good wear resistance, non-stick property and more durable non-stick property, and can remarkably prolong the service life of the product.

In other embodiments, the non-stick coating is a ceramic coating, and the non-stick layer 30 comprises a ceramic coating, an inorganic porous material, and/or a self-lubricating material; wherein, the addition amount of the inorganic porous material and/or the self-lubricating material can be 1-10%. On one hand, if the addition amount is more than 10%, the film forming performance and the construction performance of the coating are obviously influenced; on the other hand, if the amount is less than 1%, the effect of prolonging the permanent tack-free life is not obtained.

Further, the non-stick layer 30 can be made of a multi-layer structure, for example, two layers; illustratively, the non-stick layer includes at least a first coating layer disposed on the intermediate matte layer and a second coating layer disposed on the first coating layer; an inorganic porous material and/or a self-lubricating material may be added to the second coating layer and the first coating layer.

Wherein, furthermore, the inorganic porous material and/or the self-lubricating material accounts for 2% to 5% of the first coating layer, and the typical but non-limiting content can be, for example, 2%, 3%, 4%, 5%, and the like.

Alternatively, the inorganic porous material and/or the self-lubricating material may represent 3% to 8% of the second coating layer, and a typical but non-limiting content may be, for example, 3%, 4%, 5%, 6%, 7%, 8%, etc.

Or the inorganic porous material and/or the self-lubricating material accounts for 2% -5% of the first coating layer, and simultaneously the inorganic porous material and/or the self-lubricating material accounts for 3% -8% of the second coating layer. Under the condition, the function of the inorganic porous material and/or the self-lubricating material in the first coating layer and the second coating layer can be fully exerted.

It can be understood that, in practical application, the proportion of the inorganic porous material and/or the self-lubricating material in the first coating layer is 2% to 5%, and the proportion of the inorganic porous material and/or the self-lubricating material in the second coating layer is 3% to 8%, which can be flexibly adjusted according to practical situations and corresponding requirements of different products, and no excessive explanation and limitation are made. The protective non-stick layer with the multilayer composite structure can play a good role in protecting the base material, has the characteristics of good wear resistance, non-stick property and more durable non-stick property, and can remarkably prolong the service life of the product.

In some embodiments, the non-stick layer 30 includes a non-stick coating, an inorganic porous material, and a self-lubricating material, wherein the non-stick coating is a ceramic coating or a fluorine-containing coating, and the ratio of the inorganic porous material to the self-lubricating material is 0.5: 1 to 5: 1, and further may be 0.8: 1 to 4: 1, and further may be 1: 1 to 3: 1; typical but non-limiting amounts may be, for example, 0.5: 1. 0.6: 1. 0.8: 1. 1: 1. 2: 1. 2.5: 1. 3: 1. 4: 1. 5: 1, etc.

The non-stick layer comprising the inorganic porous material, the self-lubricating material and the non-stick coating is adopted, so that the non-stick coating has more excellent non-stick performance. The inorganic porous material has non-stick performance due to the characteristics of low surface energy and porous oil absorption, and the self-lubricating material has non-stick performance due to the characteristics of self-lubrication and porous oil absorption formed by the lamellar crystal, so that the requirement of the non-stick layer on the non-stick performance can be met; the inorganic porous material and the self-lubricating material have stable crystals and high melting points, so that the inorganic porous material and the self-lubricating material have better thermal stability and high temperature resistance, and have stable structures and are not easy to change substances in the cooking process, so that the inorganic porous material and the self-lubricating material are not easy to age; the inorganic porous material and the self-lubricating material have high hardness and high mechanical strength, and after the inorganic porous material and the self-lubricating material are added in the non-stick coating, the hardness of the coating is improved, and abrasion and scratch caused by long-term use are relieved. In addition, the inorganic porous material has non-stick performance due to the low surface energy and the porous oil absorption characteristic, and the self-lubricating material has the non-stick performance due to the self-lubricating and porous oil absorption characteristic formed by the lamellar crystals, so that the abrasion can be delayed, the durability of the cooking utensil is effectively improved, and the service life of the cooking utensil is prolonged.

In some embodiments, the nonstick layer 30 has a porosity of 0.5% to 15%, preferably 1% to 12%, and more preferably 2% to 10%, and a typical but non-limiting porosity may be, for example, 0.5%, 1%, 2%, 3%, 4%, 5%, 6%, 8%, 10%, 12%, 14%, 15%, and the like. The reasonable porosity of the non-stick layer can reduce stress concentration and avoid the generation of coating cracks. If the porosity of the non-stick layer is more than 15%, the hardness and the wear resistance of the non-stick layer are greatly reduced, so that the durability of the quasicrystalline coating is reduced; if the porosity of the non-stick layer is less than 0.5%, the non-stick effect of the coating is seriously influenced, and the process is difficult to realize.

Note that the porosity is measured by volume. The porosity of the non-stick layer refers to the ratio of the volume of all pores in the non-stick layer to the total volume of the non-stick layer, which can be expressed in vol.%.

In some embodiments, the inorganic porous material comprises a mixture of one or more of diatomaceous earth, bentonite, or zeolite. Specifically, the inorganic porous material may be diatomaceous earth, may be bentonite, may be zeolite, may be a mixture of diatomaceous earth and zeolite, may be a mixture of bentonite and zeolite, may be a mixture of diatomaceous earth, bentonite and zeolite, or the like. It should be noted that, because the material characteristics of the diatomite, bentonite or zeolite are similar, the low surface energy, the microporous structure and the crystal stability, the melting point and the hardness of each material, which affect the non-stick performance and the non-stick life, are similar. Therefore, when the inorganic porous material includes a mixture formed by arbitrarily mixing diatomaceous earth, bentonite and zeolite, the components may be mixed in an arbitrary ratio; for example, when the inorganic porous material is a mixture of diatomite and zeolite, the diatomite and the zeolite can be mixed in any proportion without affecting the performance of the non-stick coating, and the specific proportion or content thereof is not particularly limited and can be adjusted by a person skilled in the art according to actual conditions.

The inorganic porous material is prepared from natural inorganic porous materials such as diatomite, bentonite or zeolite, raw materials are convenient to obtain, and the manufacturing cost is reduced. When the inorganic porous material is a plurality of materials selected from diatomaceous earth, bentonite, and zeolite, powders of the respective materials may be uniformly sprayed on the intermediate rough layer 20 after being mixed in an arbitrary ratio.

Specifically, the inorganic porous material has non-stick properties due to the characteristics of low surface energy and porous oil absorption. The non-stick performance of the inorganic porous material is explained in detail by taking diatomite as an example, the diatomite is composed of amorphous hydrous silicon dioxide which is in an amorphous structure, the arrangement of atoms in a three-dimensional space is short-range ordered and long-range disordered, and the surface energy is small, so that the diatomite has good non-stick performance; in addition, the diatomite has a special porous structure, the pore size is in the micron level, the porosity is more than 80%, and a large amount of edible oil can be adsorbed in the use process, so that a layer of oil film is always kept on the surface of the diatomite layer, the non-stick performance of the diatomite layer is further enhanced, and the cooking utensil achieves a good non-stick effect.

In some embodiments, the self-lubricating material comprises a mixture of one or more of graphite, graphite fluoride, or molybdenum disulfide. Specifically, the self-lubricating material may be graphite, may be graphite fluoride, may be molybdenum disulfide, may be a mixture of graphite and graphite fluoride, may be a mixture of graphite and molybdenum disulfide, may be a mixture of graphite, graphite fluoride or molybdenum disulfide, or the like.

It should be noted that, because the material characteristics of graphite, graphite fluoride or molybdenum disulfide are similar, the layered crystal, the microporous structure, the crystal stability, the melting point and the hardness of each material, which can affect the non-stick performance and the non-stick life, are similar. Therefore, when the self-lubricating material comprises a mixture formed by mixing graphite, graphite fluoride or molybdenum disulfide at random, all the components can be mixed according to any proportion; for example, when the self-lubricating material is a mixture of graphite and graphite fluoride, the graphite and the graphite fluoride can be mixed in any proportion without affecting the performance of the non-stick coating, and the specific proportion or content thereof is not particularly limited and can be adjusted by a person skilled in the art according to actual conditions.

The self-lubricating material is made of natural inorganic self-lubricating materials such as graphite, graphite fluoride or molybdenum disulfide, raw materials are convenient to obtain, and the manufacturing cost is reduced. When the self-lubricating material is a plurality of graphite, graphite fluoride or molybdenum disulfide, powders of the respective materials may be mixed in an arbitrary ratio and uniformly sprayed on the intermediate rough layer 20.

Specifically, the self-lubricating material has non-stick properties due to the self-lubricating and porous oil-absorbing properties of the lamellar crystals. The non-stick performance of the self-lubricating material is explained in detail by taking natural crystalline graphite as an example, and the natural crystalline graphite has a layered crystal structure, so that the natural crystalline graphite has good self-lubricating performance; carbon atom in sp₂The hybrid rail forms a hexagonal net-shaped graphite layer, the bond energy between carbon and carbon belongs to a resonance R-bond, and the bond energy is up to 627kJ/mol, so that the single-layer graphite layer has firm property, and mechanical scratch is prevented in the using process; the acting force between the graphite layers belongs to weak van der Waals force, and the bonding energy is only 5.4kJ/mol, so that the multilayer graphite layers have good interlayer slippage, and the natural crystalline graphite has non-stick performance. In addition, a plurality of gaps are formed among the layered structures of the graphite, the size of the gaps is in the micron level, a large amount of edible oil can be adsorbed in the actual use process, a layer of oil film is always kept on the surface, and the non-stick performance is further enhanced.

In some embodiments, the thickness of the non-stick layer 30 may be 30 to 300 μm, preferably 35 to 250 μm, and more preferably 45 to 200 μm; typically, but not by way of limitation, the non-stick layer 30 may have a thickness of, for example, 30 μm, 40 μm, 50 μm, 60 μm, 80 μm, 100 μm, 150 μm, 200 μm, 250 μm, 300 μm, and any value in the range of any two of these values. . Within the range, the non-stick layer can be prevented from falling off, exposing the bottom and the like due to abrasion in the long-term use process because of being too thin, and the non-stick layer has a durable non-stick service life; but also can ensure that the non-stick layer can not cause the loose structure and the increased pores of the outer surface of the coating layer and the reduction of the hardness and the adhesive force of the coating layer because of too thick.

In some embodiments, the thickness of the bottom non-stick layer and the thickness of the wall non-stick layer may not be uniform. Specifically, the thickness distribution of the non-stick layer is 80 to 300 μm from the bottom to one-half of the wall, for example, 80 μm, 100 μm, 150 μm, 200 μm, 250 μm, 300 μm, etc., and the thickness of the rest is 30 to 180 μm, for example, 30 μm, 50 μm, 80 μm, 100 μm, 150 μm, 180 μm, etc. Within the range, the coating can not fall off, show the bottom and the like due to abrasion in the long-term use process because of being too thin, has lasting non-stick service life, and can also ensure that the coating can not cause loose structure, increased pores and reduced hardness and adhesive force of the outer surface of the coating because of being too thick.

It should be understood that the terms "upper," "lower," "inner," "outer," and the like in the description of the embodiments of the present application are used for descriptive purposes only and not for purposes of limitation. In addition, in this context, it will also be understood that when an element is referred to as being "on" or "under" another element, it can be directly on "or" under "the other element or be indirectly on" or "under" the other element via an intermediate element.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A container body, comprising:

a substrate;

the middle rough layer is arranged on the inner surface of the base body;

the non-stick layer is arranged on the middle rough layer;

2. The container body of claim 1, wherein the intermediate rough layer is a concave-convex surface disposed on the surface of the substrate, the concave-convex surface comprises a plurality of convex portions, and the cross-sectional area of each convex portion is 0.04-1 mm²；

The distance between two adjacent protrusions is 0.08-0.4 mm.

3. The container body of claim 2, wherein a total cross-sectional area of the plurality of projections is 40% to 60% of a cross-sectional area of the concave-convex surface.

4. The container body of claim 1, wherein the intermediate rough layer is a concave-convex surface disposed on the surface of the substrate, the concave-convex surface comprises a plurality of convex portions, the width of the cross section of each convex portion is 0.1-1 mm, and the total cross-sectional area of the plurality of convex portions is 40-60% of the cross-sectional area of the concave-convex surface.

5. The container body as claimed in any one of claims 2 to 4, wherein the concavo-convex surface further comprises a plurality of concave portions, and a height difference between a highest portion of each of the convex portions and a lowest portion of each of the concave portions ranges from 0.02 to 0.1 mm.

6. The container body of any one of claims 2-4, characterized in that the cross-sectional shape of the bulge in a direction perpendicular to the base body comprises a cone, a semicircle, a semi-ellipse, a triangle, a square, and combinations thereof;

7. The container body according to claim 1, characterized in that the intermediate rough layer is a hard oxide layer, an etched layer, a thermally sprayed layer or a cold sprayed layer.

8. The container body of claim 7 wherein the thermal spray coating or the cold spray coating is a metal layer, an alloy layer, or a ceramic layer.

9. The container body of claim 8, wherein the material of the thermal spray coating layer or the cold spray coating layer comprises: iron and its alloys, zinc and its alloys, titanium and its alloys, zirconium and its alloys, chromium and its alloys, nickel and its alloys, cobalt and its alloys, copper and its alloys, zirconium and its alloys, yttrium and its alloys, molybdenum and its alloys, vanadium and its alloys, titanium carbide, titanium nitride, titanium diboride, silicon carbide, tungsten carbide, silicon nitride, boron nitride, titanium oxide, zirconium oxide, aluminum oxide or titanium suboxide.

10. The container body according to any one of claims 1 to 4 and 7 to 9, wherein the non-stick layer completely covers the surface of the intermediate rough layer, or a portion of the intermediate rough layer is exposed to the non-stick layer.

11. The container body of any of claims 1-4, 7-9, wherein the material of the base comprises aluminum, aluminum alloys, titanium alloys, iron, stainless steel, and composites thereof.

12. The container body of any one of claims 1-4, 7-9, wherein the material of the non-stick layer comprises an inorganic porous material and a self-lubricating material, and the ratio of the inorganic porous material to the self-lubricating material is 0.5: 1 to 5: 1.

13. the container body of any of claims 1-4, 7-9, wherein the non-stick paint is a ceramic paint, and the non-stick layer comprises at least a first coating layer and a second coating layer;

14. The container body of any of claims 1-4, 7-9 wherein the non-stick coating is a fluorine-containing coating, the non-stick layer comprising at least a first coating layer and a second coating layer;

15. The container body of claim 14 further comprising a finish, the finish overlying the second coating.

16. The container body of any one of claims 1-4, 7-9, wherein the inorganic porous material comprises a mixture of one or more of diatomaceous earth, bentonite, or zeolite;

17. A cooking appliance comprising the container body of any one of claims 1-16.