Odor-resistant coating, method of manufacturing an odor-resistant coating, and cup

Abstract

The present application provides an anti-odor coating, a method for manufacturing the anti-odor coating, and a cup. The anti-odor coating comprises a non-stick layer and nano zinc oxide particles filled in the non-stick layer. The cup with the anti-odor coating according to the embodiments of the present application can ensure that foreign matters (e.g. particulate matters, liquid droplets) are not easily adhered to the anti-odor coating after use, thereby reducing the source of odor from the root. The nano-sized zinc oxide can catalyze the system composed of water and air under the condition of photoexcitation to produce active oxygen groups, which can catalyze / degrade various organic molecules to decompose into inorganic substances such as carbon dioxide and water molecules, so that the anti-odor coating with nano zinc oxide particles can reduce or basically solve the odor problem of the cup after use.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of containers, and more particularly, to an odor-resistant coating, a method for manufacturing the odor-resistant coating, and a cup including the odor-resistant coating. BACKGROUND

[0002] At present, the coating of the existing cup generally does not have an odor-resistant function. After drinking a beverage (for example, milk, cola, etc.), the cup needs to be cleaned in time to ensure that there is no odor during long-term use. For some beverages with heavy taste, such as coffee or tea, the cup is easy to adsorb the beverage or other residues after use, which causes extremely serious odor. Usually, the odor is very obvious after several uses (for example, 1-2 times), which causes poor user experience. SUMMARY

[0003] Therefore, the purpose of the present application is to provide an odor-resistant coating, a method for manufacturing the odor-resistant coating, and a cup to solve the odor problem of the cup during use.

[0004] According to a first aspect of the present application, an odor-resistant coating for a cup is provided, wherein the odor-resistant coating includes a non-stick layer and nano zinc oxide particles filled in the non-stick layer.

[0005] In an embodiment, the odor-resistant coating is formed by a modified coating, the modified coating includes a coating body forming the non-stick layer and nano zinc oxide particles dispersed in the coating body, and the coating body includes a single-system ceramic coating after curing or a single-system fluorine coating after curing.

[0006] In an embodiment, based on the total weight of the modified coating being 100%, the weight percentage of the nano zinc oxide particles is 2%-5%, the weight percentage of the coating body is 93%-97%, and the rest is an acid-base regulator.

[0007] In an embodiment, based on the total weight of the odor-resistant coating being 100%, the weight percentage of the nano zinc oxide particles is 4%-10%.

[0008] In an embodiment, the size of the nano zinc oxide particles is 10 nm-100 nm; and / or the nano zinc oxide is at least one of a single needle-like crystal structure, a four-needle-like crystal structure, and a flaky crystal structure.

[0009] According to a second aspect of the present application, a method for manufacturing an odor-resistant coating is provided, wherein the method includes the following steps: applying a modified coating including nano zinc oxide particles on the inner side wall of a cup body to form an odor-resistant coating; and wherein the odor-resistant coating includes a non-stick layer and nano zinc oxide particles filled in the non-stick layer.

[0010] In embodiments, the modified coating further comprises a coating body, wherein the nano-zinc oxide particles are dispersed in the coating body, and wherein the coating body comprises a cured single-system ceramic coating or a cured single-system fluorine coating and forms the non-stick layer.

[0011] In embodiments, the method further comprises providing a modified coating, wherein the step of providing a modified coating comprises: providing a coating body; mixing the nano-zinc oxide particles, the acid-base adjusting agent and the coating body to obtain a mixed slurry as the modified coating.

[0012] In embodiments, the step of mixing comprises: mixing the coating body and the acid-base adjusting agent first, then adding the nano-zinc oxide particles, and controlling the mixing environment to be weakly acidic, thereby obtaining the mixed slurry.

[0013] According to a third aspect of the present application, there is provided a cup, wherein the cup comprises the odor-resistant coating according to the odor-resistant coating provided in the above embodiments or the odor-resistant coating manufactured according to the method of manufacturing an odor-resistant coating provided in the above embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0014] The above described and / or other aspects and features of the present inventive concept will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings.

[0015] Figure 1 is a structural schematic diagram of an exemplary cup according to embodiments of the present application.

[0016] Figure 2 is Figure 1 is an enlarged structural schematic diagram at I in

[0017] Figure 3 is a process schematic diagram of forming an odor-resistant coating from a modified coating according to the present application.

[0018] SYMBOL DESCRIPTIONS:

[0019] 100, cup; 110, cup body; 120, odor-resistant coating; 121, nano-zinc oxide particles; 122, non-stick layer. DETAILED DESCRIPTION

[0020] Example embodiments of the present inventive concept will be described below in greater detail. While example embodiments of the present inventive concept are described below, it is to be understood that the present inventive concept can be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the inventive concept to those skilled in the art.

[0021] Currently, the coating of the existing cup generally does not have the function of preventing odor. After drinking a beverage (for example, milk, cola, etc.), the cup needs to be cleaned in time to ensure that there is no odor for long-term use. For some heavy-tasting beverages, such as coffee or tea, the cup is easy to adsorb the beverage or other residues after use, which causes extremely serious odor. Usually, the odor is very obvious after a few uses (for example, 1-2 times), which causes poor user experience.

[0022] The molecules that produce their unique flavors in various beverages are some organic molecules. If the organic molecules remaining on the inner wall of the cup after use can be removed, the odor of the cup after use can be greatly reduced.

[0023] According to a first aspect of the present application, a cup is provided, and the cup comprises a non-stick layer and nano zinc oxide particles filled in the non-stick layer.

[0024] According to the embodiments of the present application, the cup provided by the present application comprises a non-stick layer and nano zinc oxide particles uniformly filled in the non-stick layer. After use, the cup with the non-stick layer can prevent foreign matter (for example, particulate matter, liquid droplets) from adhering to the non-stick layer, thereby reducing the source of odor from the root. The nano-sized zinc oxide can catalyze the system composed of water and air to produce active oxygen groups under the condition of light excitation. The active oxygen groups can catalyze / degrade various organic molecules to decompose into inorganic substances such as carbon dioxide and water molecules, so that the non-stick layer with nano zinc oxide particles can reduce or basically solve the problem of odor after use of the cup.

[0025] According to the present application, the nano zinc oxide particles are uniformly filled in the non-stick layer to form the non-stick layer, and the nano zinc oxide is filled in each region of the non-stick layer, for example, the surface layer and the inner layer, so that the non-stick layer can play the function of preventing odor during long-term use. Figure 1 FIG. 1 is a structural schematic diagram of a cup according to an embodiment of the present application, Figure 2 FIG. 2 is a structural schematic diagram of a cup according to another embodiment of the present application, Figure 1 FIG. 3 is an enlarged structural schematic diagram of I in FIG. 2. As shown in FIG. 3, the cup comprises a cup body 110 and a non-stick layer 122 provided on the inner surface of the cup body 110. The non-stick layer 122 comprises nano zinc oxide particles 121 uniformly filled in the non-stick layer 122. The nano zinc oxide particles 121 are uniformly filled in each region of the non-stick layer from the inside to the outside. Figure 1 FIG. 4 is a structural schematic diagram of a cup according to another embodiment of the present application, Figure 2 As shown in FIG. 4, the cup comprises a cup body 110 and a non-stick layer 122 provided on the inner surface of the cup body 110. The non-stick layer 122 comprises nano zinc oxide particles 121 uniformly filled in the non-stick layer 122. The nano zinc oxide particles 121 are uniformly filled in each region of the non-stick layer from the inside to the outside. Figure 2In the schematic diagram shown, some of the nano-zinc oxide particles 121 are exposed on the surface of the non-stick layer 122, and the rest are uniformly dispersed in the non-stick layer 122. The part of the nano-zinc oxide particles 121 exposed on the surface of the non-stick layer 122 serves as a catalytic site for exerting odor resistance performance. The nano-zinc oxide particles uniformly dispersed inside the non-stick layer 122 will be exposed with wear during use, providing a long-lasting odor resistance effect, thereby prolonging the service life of the cup.

[0026] In the odor resistance coating, the weight percentage of the nano-zinc oxide particles in the total weight of the odor resistance coating is 4%-10%, and the balance is the non-stick layer, based on 100% of the total weight of the odor resistance coating. The weight percentage of the filled nano-zinc oxide particles in the predetermined range can ensure the quality of the formed coating, while making the odor resistance performance of the cup better. If the weight percentage of the nano-zinc oxide particles is too high, it will affect the quality of the surface coating (for example, produce surface appearance quality problems such as orange peel), and affect the stain resistance of the coating; if the weight percentage of the nano-zinc oxide particles is too low, the odor resistance level of the odor resistance coating will be low, and the market competitiveness of the cup will not be obvious.

[0027] According to the present application, the odor resistance coating is formed by a modified coating, wherein the modified coating is a liquid coating, including a coating body and nano-zinc oxide particles dispersed in the coating body, wherein the coating body includes a cured single-system ceramic coating or a cured single-system fluorine coating. The non-stick layer is formed by the coating body, so that the formed odor resistance coating is not easy to adhere to foreign matter, and the nano-zinc oxide particles can be bonded to each other during the formation of the coating, prompting the nano-zinc oxide particles to form a film layer (i.e., the odor resistance coating) together. The nano-zinc oxide particles will decompose organic molecules under the action of photocatalysis, so that the odor resistance coating ensures the antibacterial property of the cup during use and avoids odor.

[0028] The fluorine coating and ceramic coating suitable for the cup are generally single-system ceramic coating or single-system fluorine coating. In the embodiments, the coating body includes single-system ceramic coating after curing or single-system fluorine coating after curing. In the case that the coating body is single-system ceramic coating after curing, the single-system ceramic coating after curing has certain non-stickiness, wear resistance and hardness by itself, so that the odor-resistant coating also has certain non-stickiness, wear resistance and hardness, so that the odor-resistant coating is not easy to adhere to foreign matters, and has a long service life. In addition, the non-stick layer formed by the ceramic coating has a bright appearance, a ceramic texture and good corrosion resistance, and is suitable for containing various beverages. At the same time, the ceramic coating is more environmentally friendly, the manufacturing process is simple and convenient, and the cost is lower. In the case that the coating body is single-system fluorine coating after curing, the non-stickiness is good, which can improve the easy-to-clean performance of the coating layer, and the user only needs to rinse to completely clean, so that the source of residual organic matter can be avoided from the root, thereby avoiding the generation of odor.

[0029] In the embodiments, the specific surface area of the nano-zinc oxide is large, and the catalytic activity is good. The inventors find that the nano-zinc oxide with a specific crystal structure has outstanding catalytic activity compared with other crystal structures. In the exemplary embodiments, the nano-zinc oxide is single-needle crystal structure, four-needle crystal structure or flaky crystal structure. Compared with the four-needle crystal structure or the flaky crystal structure, the single-needle crystal structure formed by the polar growth of the zinc oxide crystal has a larger specific surface area, which is more conducive to the formation of more surface defects of the zinc oxide, and is more likely to produce escape electrons, thereby enhancing the photocatalytic effect. At the same time, compared with the four-needle crystal structure and the flaky crystal structure, the single-needle crystal structure can adjust the flowability and viscosity of the coating, increase the wet film thickness, thereby increasing the leveling performance, and the crystal will tend to arrange in the direction parallel to the plane during leveling, thereby increasing the surface area of the nano-zinc oxide exposed on the surface, increasing the catalytic sites, and enhancing the catalytic effect.

[0030] According to the present application, the nano zinc oxide particles have a preset amount of addition in the coating body. Zinc oxide is a basic compound, and in the case where the coating body includes a preset amount of stearic acid dispersant, it can react with trace amounts of free fatty acids to form zinc soap, which makes the coating body have a tendency to become viscous, so it cannot be added too much in the above case. Ceramic coatings or fluorine coatings themselves have a certain stability, and the intervention of foreign substances will destroy this fluidity. Therefore, in order not to affect the basic performance of the coating body (such as fluidity, stability, demulsification, etc.), the basic performance of the coating body can be avoided by controlling the particle size and amount of addition of nano zinc oxide particles. In an exemplary embodiment, the modified coating is composed of a coating body and nano zinc oxide particles dispersed in the coating body. Based on the total weight of the modified coating being 100%, the weight percentage of nano zinc oxide particles in the modified coating is 2%-5%, the weight percentage of the coating body is 93%-97%, and the weight percentage of the acid-base regulator is 1%-2%.

[0031] In an embodiment, the particle size of the nano zinc oxide particles is 10-100 nm. The particle size of the nano zinc oxide particles is in this range, has a suitable specific surface area, and can produce good photocatalytic effect and good odor prevention effect. If the nano zinc oxide particles are too fine, they will agglomerate, which is not conducive to dispersion, thereby reducing the odor prevention effect; if the nano zinc oxide particles are too large, their specific surface area is too small, resulting in poor odor prevention effect.

[0032] According to the present application, the weight percentage of nano zinc oxide particles in the odor-resistant coating is 4%-10% of the total weight of the odor-resistant coating, and the balance is the non-stick layer.

[0033] In an embodiment, the thickness of the odor-resistant coating is 30-50 μm.

[0034] In the prior art, during the process of forming a coating from a coating, a surface drying-curing step is experienced. In the surface drying step, the coating can be pre-cured, but still has a certain fluidity, that is, the coating has considerable fluidity before surface drying. In practice, before the surface drying step of the coating forming a coating, nano zinc oxide is usually directly sprinkled on the un-dried coating, but it has been found through testing that the adhesion between the nano zinc oxide and the non-stick layer in the coating formed in this way is poor and is very easy to fall off. In addition, the coating still has a large roughness after leveling, which is more likely to hide dirt (such as organic molecules that produce odor in pores), thereby being prone to produce odor and having poor user experience.

[0035] According to a second aspect of the present application, a method for manufacturing an odor-resistant coating is provided, wherein the method for manufacturing the odor-resistant coating comprises: providing a modified coating; and applying the modified coating comprising nano-zinc oxide particles on an inner sidewall of a cup body, so as to form the odor-resistant coating comprising a non-stick layer and the nano-zinc oxide particles filled in the non-stick layer.

[0036] According to the method for manufacturing the odor-resistant coating of the present application, the odor-resistant coating of the present application can be formed by the modified coating comprising the nano-zinc oxide particles, and the odor-resistant effect is good, the bonding force is high, and the forming method is simple, and the coating can have a good appearance.

[0037] In an embodiment, the modified coating mainly comprises a coating body, and the nano-zinc oxide particles are dispersed in the coating body, wherein the coating body comprises a cured single-system ceramic coating or a cured single-system fluorine coating.

[0038] In an embodiment, in the method for manufacturing the odor-resistant coating, the modified coating is provided, wherein the providing of the modified coating comprises: providing a coating body; and mixing the nano-zinc oxide particles, an acid-base adjusting agent and the coating body into a mixed slurry as the modified coating.

[0039] In an embodiment, the step of forming the mixed slurry comprises: first mixing the coating body and the acid-base adjusting agent, and then adding the nano-zinc oxide particles, so that the nano-zinc oxide particles, the acid-base adjusting agent and the coating body are in a weakly acidic environment during the mixing process, thereby forming the mixed slurry as the modified coating, wherein the pH value can be 5-6.

[0040] In the following, the method for providing the modified coating according to the present application will be described by taking the cured single-system ceramic coating as the coating body as an example. For the cured single-system fluorine coating, no specific description will be given.

[0041] In an embodiment, the providing of the modified coating comprises a step of preparing the coating body, i.e., a step of preparing the cured ceramic coating. The step of preparing the cured ceramic coating comprises: providing siloxane monomers, a film-forming promoter, a filler, inorganic silica sol and deionized water; and mixing the siloxane monomers, the film-forming promoter, the filler, the inorganic silica sol and the deionized water, so as to form the cured ceramic coating according to the present application. The filler can constitute a skeleton of the coating, increase the thickness of the coating, improve the viscosity, and at the same time, enhance the mechanical strength of the coating. For example, the filler can be barium sulfate powder. The film-forming promoter can make the coating produce plastic flow and elastic deformation at a lower temperature to condense into a film, thereby facilitating the formation of the coating. For example, the film-forming promoter can be ethylene glycol ester.

[0042] Specifically, the mixing of the siloxane monomer, the film forming promoter, the filler, the inorganic silica sol and the deionized water includes placing each of the above mixtures in a roller to stir and mix them sufficiently, wherein the mixing time is 8-12 hours, the roller speed is 140-160 rpm, and the mixing environment is controlled to be weakly acidic, specifically, the pH value during the mixing process is controlled to be between 5 and 6, so that the aged ceramic coating is formed, i.e., the aged ceramic coating as the coating main body has a uniform appearance, no stratification phenomenon, natural gloss, good flowability, and no obvious grainy feeling.

[0043] In the exemplary embodiment, the weight percentage of the siloxane monomer is 10-20%, the weight percentage of the film forming promoter is 1-2%, the weight percentage of the filler is 10-15%, the weight percentage of the inorganic silica sol is 10-20%, and the balance is water, based on 100% of the weight of the material.

[0044] According to the present application, after the aged ceramic coating is formed, the aged ceramic coating can be filtered, for example, using a 300-mesh filter to filter out large particles therein, to ensure the leveling performance of the modified coating formed.

[0045] According to the present application, after the aged ceramic coating is formed, the nano zinc oxide particles, the acid-base regulator and the aged ceramic coating (coating main body) are mixed into a mixed slurry to obtain the modified coating according to the present application. The stability of the aged ceramic coating needs to be maintained in a weakly acidic environment, the nano zinc oxide is an alkaline particle, and the acid-base regulator can maintain the aged ceramic coating in a weakly acidic environment to improve the film forming property. Exemplarily, the acid-base regulator can be formic acid.

[0046] Specifically, the step of mixing the nano zinc oxide particles, the acid-base regulator and the aged ceramic coating into a mixed slurry includes first adding the acid-base regulator to the aged ceramic coating, and then adding the nano zinc oxide particles, so that the coating system is maintained in a weakly alkaline environment, the alkaline nano zinc oxide is added in a small amount, and is mixed with the aged ceramic coating in a short time, and does not excessively affect the performance of the above-mentioned aged ceramic coating, so that the stability of the modified coating is improved. During the mixing process, the above-mentioned materials can be uniformly mixed into a mixed slurry by stirring at a stirring speed of 5000-6000 rpm for 10-15 min, to form a modified coating according to the present application, i.e., a modified coating according to the present application with the ceramic coating as the main body. Specifically, the weight ratio of the nano zinc oxide particles, the acid-base regulator and the aged ceramic coating is (2-5):(1-2):(93-97).

[0047] According to some embodiments of the present application, the method for manufacturing the modified coating further comprises adding a dispersant into the obtained modified coating, and forming a mixed slurry by mixing as the modified coating. In an exemplary embodiment, the weight ratio of the nano-zinc oxide particles and the dispersant is (1-2):(0.5-1). The addition of a preset amount of the dispersant can enable the nano-zinc oxide in the modified coating to be sufficiently dispersed in the coating body, so as to form an anti-odor coating layer in which the nano-zinc oxide particles are uniformly dispersed in the non-stick layer. In an exemplary embodiment, the dispersant can be a stearic acid dispersant, a polycarboxylic acid sodium salt dispersant, or a polyacrylate dispersant. Specifically, the stearic acid dispersant includes a stearate dispersant, such as a zinc stearate dispersant, a calcium stearate dispersant, and a sodium stearate dispersant.

[0048] According to the present application, after the dispersant is added, the mixed slurry can be subjected to ultrasonic treatment for 15-25 min, and then filtered through a 300-mesh filter screen to filter out large particles in the mixed slurry. The modified coating thus obtained can not only ensure the flatness of the coating after film formation to ensure the aesthetic appearance, but also avoid the deposition of particles on the surface of the coating to generate odor.

[0049] According to the present application, the modified coating should be used immediately after formation to avoid the high-activity oxidation of the zinc oxide particles to the ceramic coating or the fluorine coating, which affects the film formation performance. In an embodiment, the time from the formation of the modified coating to the coating is not more than 2 h.

[0050] Formation of odor-resistant coating

[0051] According to the present application, the modified coating is coated on the cup body by air spraying. Specifically, the parameters of the air spraying are as follows: the spraying pressure is 0.4-0.6 MPa; the spraying distance is 15-20 cm; and the moving speed of the spray gun is 30-60 cm / s.

[0052] After the spraying is completed, the modified coating according to the present application has good leveling performance and can automatically spread out, which is manifested in the macroscopic phenomenon of being laid into a flat plane, so as to ensure the appearance of the coating and avoid the appearance problems such as orange peel and sagging, and ensure normal application.

[0053] Figure 3 is a process schematic diagram of forming the anti-odor coating layer by spraying the modified coating according to the present application. As shown in Figure 3 S1 is an initial stage of spraying on the base body, S2 is a middle stage of spraying on the base body, and S3 is a late stage of spraying on the base body. From the S1 stage to the S3 stage, the modified coating gradually spreads on the base body and is automatically laid into a coating layer with a relatively flat surface.

[0054] According to the present application, after coating, the cup body coated with the modified coating is placed in an oven at 280-320℃ for 8-12min, so that the material is cured to form an odor-resistant coating.

[0055] According to a third aspect of the present application, a cup is provided, wherein the cup comprises the odor-resistant coating according to the above embodiments.

[0056] In embodiments, the cup comprises a cup body having a shape of a conventional cup. In exemplary embodiments, the cup is made of stainless steel and has a thickness of 0.2-0.8mm. The cup body can have a double-layer structure or a single-layer structure. In the case of a double-layer structure, the cup body comprises an inner container and an outer shell arranged outside the inner container, and in the case of a double-layer structure, the odor-resistant coating can be coated on the inner surface of the inner container.

[0057] According to the present application, the odor-resistant coating is the odor-resistant coating of the first aspect described above, and thus has all the beneficial technical effects of the odor-resistant coating described above, which will not be repeated here.

[0058] According to the present application, the method for manufacturing the cup comprises providing a cup body, providing a modified coating, spraying the modified coating on the inner side wall of the cup body, thereby forming an odor-resistant coating comprising a non-stick layer and nano-zinc oxide particles filled in the non-stick layer on the inner side wall of the cup body.

[0059] In embodiments, the step of providing the cup body comprises preheating the cup body so that the surface temperature of the cup body is 100-120℃.

[0060] The present application will be described in detail below with reference to specific embodiments, but the scope of protection of the present application is not limited to these embodiments.

[0061] Example 1

[0062] The cup according to Embodiment 1 is manufactured by the following method.

[0063] Step S10, a cup body is prepared. Specifically, a stainless steel pipe is processed into an outer shell having a thickness of 0.6mm, a stainless steel pipe is processed into an inner shell having a thickness of 0.6mm, the inner and outer shells are assembled and welded into a cup body, and the cup body is electrolytically polished and ready for use.

[0064] Step S20, a modified coating is provided.

[0065] Step S21, zinc oxide particles having an average particle size of 10-20nm and a single needle-like crystal structure are prepared.

[0066] Step S22, providing the matured single-system ceramic coating. Specifically, 15% of the siloxane monomer, 1.5% of the film-forming accelerator, 12% of the filler, 15% of the inorganic silica sol, and the balance of deionized water are placed in a roller for mixing for 8 hours, and the rolling speed of the roller is set to 150 revolutions per minute, so as to obtain the matured single-system ceramic coating.

[0067] Step S23, mixing the acid-base regulator and the matured ceramic coating first, and then adding the nano-zinc oxide particles for mixing, wherein the pH during the mixing process is between 5 and 6, and the weight ratio of the nano-zinc oxide particles, the acid-base regulator, and the matured ceramic coating is 2:1:97, so as to form the modified coating, wherein the weight ratio of the nano-zinc oxide in the modified coating is 2%.

[0068] Step S30, immediately using the modified coating for air spraying, wherein the parameters of the air spraying are: the spraying pressure is 0.5 Mpa; the spraying distance is 18 cm; and the moving speed of the spray gun is 40 cm / s. The modified coating is coated on the inner surface of the cup body to obtain an odor-resistant coating with a thickness of 40 μm, which is dried at 300°C for 10 minutes, so as to complete the manufacturing of the cup of Example 1.

[0069] Example 2

[0070] In addition to using zinc oxide particles with an average particle size of 25 nm to 55 nm instead of the 10 nm to 20 nm zinc oxide particles of Example 1 in step S21, the cup of Example 2 is manufactured by the same method as Example 1.

[0071] Example 3

[0072] In addition to using zinc oxide particles with an average particle size of 60 nm to 80 nm instead of the 10 nm to 20 nm zinc oxide particles of Example 1 in step S21, the cup of Example 3 is manufactured by the same method as Example 1.

[0073] Example 4

[0074] In addition to using zinc oxide particles with an average particle size of 85 nm to 100 nm instead of the 10 nm to 20 nm zinc oxide particles of Example 1 in step S21, the cup of Example 4 is manufactured by the same method as Example 1.

[0075] Example 5

[0076] In addition to using zinc oxide particles with a four-needle crystal structure instead of the single-needle crystal structure of the zinc oxide particles of Example 1 in step S21, the cup of Example 5 is manufactured by the same method as Example 1.

[0077] Example 6

[0078] Except that in step S21, the zinc oxide particles in sheet crystal structure are used instead of the single needle crystal structure of zinc oxide particles of Example 1, the cup of Example 6 is manufactured by the same method as Example 1.

[0079] Example 7

[0080] Except that in step S22, the nano zinc oxide particles, acid-base regulator and the ceramic coating after aging are mixed in a weight ratio of 3:2:95 to form a modified coating with a weight ratio of nano zinc oxide of 3%, the cup of Example 7 is manufactured by the same method as Example 1.

[0081] Example 8

[0082] Except that in step S22, the nano zinc oxide particles, acid-base regulator and the ceramic coating after aging are mixed in a weight ratio of 4:2:94 to form a modified coating with a weight ratio of nano zinc oxide of 4%, the cup of Example 8 is manufactured by the same method as Example 1.

[0083] Example 9

[0084] Except that in step S22, the nano zinc oxide particles, acid-base regulator and the ceramic coating after aging are mixed in a weight ratio of 5:1.5:93.5 to form a modified coating with a weight ratio of nano zinc oxide of 5%, the cup of Example 9 is manufactured by the same method as Example 1.

[0085] Example 10

[0086] Except that in step S22, the single system fluorine coating after aging is provided instead of the single system ceramic coating after aging, the cup of Example 10 is manufactured by the same method as Example 1.

[0087] Example 11

[0088] Except that in step S23, 1% of the dispersant is added to the modified coating and is treated by ultrasonic treatment to obtain the modified coating of the present example, the cup of Example 11 is manufactured by the same method as Example 1.

[0089] Comparative Example 1

[0090] A cup was produced by forming a coating of 40 μm thickness on the cup body using the aged ceramic coating described in Example 1.

[0091] Comparative Example 2

[0092] A cup was produced by forming a coating of 40 μm thickness on the cup body using the aged fluorine coating described in Example 10.

[0093] Comparative Example 3

[0094] Ordinary vacuum cup

[0095] The coatings of the cups produced in Examples 1-11 and Comparative Examples 1-3 were tested for performance and the results are recorded in Table 1 below. The specific performance test methods are as follows:

[0096] I. Test methods and evaluation criteria

[0097] 1. Odor resistance test and evaluation criteria

[0098] (1) Test liquid: coffee (coffee formed by placing 10 g of solid coffee in 300 g of water).

[0099] (2) Test method: The test liquid was prepared according to the proportions and placed in the cup, which was then covered with a lid and left for 24 h.

[0100] (3) Evaluation method: The cup was cleaned with hands or a cloth, rinsed with water, and then the odor was evaluated after 10 s.

[0101] (4) Evaluation criteria: First, three levels were distinguished: no obvious odor after washing (A level), slight odor after washing (B level), and obvious odor after washing (C level).

[0102] Among them, the B and C levels were further subdivided into B-X and C-X to represent the odor dissipation period, for example: B-1 represents a slight odor after washing, but the odor dissipates to be not obvious within 1 hour.

[0103]

[0104] 2. Coating adhesion and evaluation criteria

[0105] According to GB / T 9286-2021, test samples were prepared and subjected to cross-cut testing.

[0106] Test method:

[0107] (1) Place the test panel on a hard, flat surface to prevent any distortion of the test panel during the test. The test panel is the coated sample of the cup of the example and comparative example.

[0108] (2) Before testing, check the cutting edge of the knife and keep it in good condition by sharpening the edge or replacing the blade.

[0109] The manual cutting is performed according to the following procedure. Specifically, the cutting knife is held at an angle of about 45° and cutting is performed. Six cuts are made on the coating at a uniform speed, and if the depth of the cutting knife is too great to cut through the substrate, it indicates that there is a risk of coating tearing and peeling.

[0110] If the coating is too hard to cut through to the substrate, it indicates that the test is invalid.

[0111] (3) Repeat the above operation and make another six parallel cuts, which intersect the original cuts at 90° to form a grid pattern.

[0112] Evaluation criteria: First, five levels are divided:

[0113] Level 0, the cutting edge is completely smooth, and there is no peeling in the grid.

[0114] Level 1: There is a little peeling of the coating at the intersection of the cuts, but the affected intersection cutting area is not greater than 5%.

[0115] Level 2: There is peeling of the coating at the intersection of the cuts and / or along the edge of the cuts, the affected intersection cutting area is greater than 5% but not greater than 15%.

[0116] Level 3: The coating peels off in large pieces along the cutting edge, and / or peels off partially or completely in different parts of the grid, the affected intersection cutting area is greater than 15% but not greater than 35%.

[0117] Level 4: The coating peels off in large pieces along the cutting edge, and / or some squares peel off partially or completely, the affected intersection cutting area is greater than 35% but not greater than 65%.

[0118] Level 5: The degree of peeling is more than that of level 4.

[0119] II. Test Results

[0120] Table 1: Test Results Table

[0121] Odor resistance evaluation rating Adhesion Example 1 B-1 1st Example 2 A 1st Example 3 B-1 1st Example 4 B-1 1st Example 5 B-2 1st Example 6 B-2 1st Example 7 B-1 1st Example 8 B-1 1st Example 9 A 1st Example 10 B-1 1st Example 11 A 1st Comparative Example 1 C-24 1st Comparative Example 2 C-24 1st Comparative Example 3 C-24 1st

[0122] As can be seen from Table 1, the cup of the example of the present application can dissipate the odor in a relatively short time after use. And even if foreign substances are added, it will not excessively affect the adhesion of the coating.

[0123] While the application has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes in form and details can be made therein without departing from the spirit and scope of the application as defined by the appended claims and their equivalents. Embodiments should only be considered in a descriptive sense and without limitation. Therefore, the scope of the application is not to be limited to the specific embodiments herein illustrated and described but only by the claims that follow, which are hereby intended to embrace all variation falling within the scope of the application.

Claims

1. An off-odour resistant coating for a cup, characterised in that, The anti-odor coating includes a non-stick layer and nano zinc oxide particles filled in the non-stick layer, and the anti-odor coating is formed by a modified coating, the modified coating includes a coating body forming the non-stick layer and nano zinc oxide particles dispersed in the coating body, wherein the coating body includes a cured single-system ceramic coating, the weight percentage of the nano zinc oxide particles in the modified coating is 2%-5% based on the total weight of the modified coating being 100%, the size of the nano zinc oxide particles is 10nm-100nm, and the nano zinc oxide particles have a single needle-like crystal structure, wherein the cured single-system ceramic coating includes a siloxane monomer, a film-forming promoter, a filler, an inorganic silica sol, and water, the weight percentage of the siloxane monomer in the cured single-system ceramic coating is 10%-20%, the weight percentage of the film-forming promoter is 1%-2%, the weight percentage of the filler is 10%-15%, the weight percentage of the inorganic silica sol is 10%-20%, and the balance is water.

2. The anti-odor coating according to claim 1, characterized in that The weight percentage of the nano zinc oxide particles in the anti-odor coating is 4%-10% based on the total weight of the anti-odor coating being 100%.

3. The anti-odor coating of claim 1, wherein, The thickness of the anti-odor coating is 30μm-50μm.

4. The anti-odour coating according to any one of claims 1 to 3, characterized in that, The modified coating further includes an acid-base adjusting agent, the weight percentage of the nano zinc oxide particles in the modified coating is 2%-5%, the weight percentage of the coating body is 93%-97%, and the weight percentage of the acid-base adjusting agent is 1%-2% based on the total weight of the modified coating being 100%.

5. A method of making an odor-resistant coating, characterized by, The method includes the following steps: The modified coating including the nano zinc oxide particles and the coating body is coated on the inner side wall of the cup body to form the anti-odor coating, wherein the nano zinc oxide particles are dispersed in the coating body, the coating body includes a cured single-system ceramic coating, the cured single-system ceramic coating includes a siloxane monomer, a film-forming promoter, a filler, an inorganic silica sol, and water, the weight percentage of the siloxane monomer in the cured single-system ceramic coating is 10%-20%, the weight percentage of the film-forming promoter is 1%-2%, the weight percentage of the filler is 10%-15%, the weight percentage of the inorganic silica sol is 10%-20%, and the balance is water, the weight percentage of the nano zinc oxide particles in the modified coating is 2%-5% based on the total weight of the modified coating being 100%, and the size of the nano zinc oxide particles is 10nm-100nm; the nano zinc oxide particles have a single needle-like crystal structure, The anti-odor coating includes a non-stick layer and the nano zinc oxide particles filled in the non-stick layer.

6. The method of claim 5, wherein the coating is applied to the surface of the article by a process selected from the group consisting of spraying, dipping, and brushing. The coating body forms the non-stick layer; and / or the modified coating further includes an acid-base adjusting agent, the weight percentage of the nano zinc oxide particles in the modified coating is 2%-5%, the weight percentage of the coating body is 93%-97%, and the weight percentage of the acid-base adjusting agent is 1%-2% based on the total weight of the modified coating being 100%.

7. The method of claim 5, wherein the coating is applied to the surface of the article by a process selected from the group consisting of spraying, dipping, and brushing. The method further comprises providing a modified coating, the step of providing the modified coating comprising: providing a coating body; mixing the nano-zinc oxide particles, the acid-base regulator and the coating body to obtain a mixed slurry as the modified coating.

8. The method of making an anti-odor coating according to claim 7, wherein, The step of mixing comprises: mixing the coating body and the acid-base regulator first, and then adding the nano-zinc oxide particles, and controlling the mixing environment to be weakly acidic, thereby obtaining the mixed slurry.

9. The method of making an anti-malodorous coating of claim 5, wherein, The weight percentage of the nano-zinc oxide particles is 4%-10% based on the total weight of the odor-resistant coating being 100%; and / or, The thickness of the odor-resistant coating is 30μm-50μm.

10. A cup characterized in that, The cup comprises the odor-resistant coating according to any one of claims 1 to 4 or the odor-resistant coating manufactured by the method of manufacturing an odor-resistant coating according to any one of claims 5 to 9.

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