Packaging structure and household appliance

Abstract

The application discloses a packaging structure and a household appliance, wherein the packaging structure is sequentially provided with a buffer base material layer, a primer layer, an elastic layer and a protective layer along the thickness direction of the packaging structure. The elastic layer is configured to buffer the force acting on the buffer base material layer, and the primer layer is configured to anchor the elastic layer and the buffer base material layer. The protective layer is arranged on the surface of the elastic layer, and the protective layer is configured to protect the elastic layer. In the packaging structure disclosed by the application, the primer layer is arranged to buffer the structure of the buffer base material layer and to anchor the elastic layer and the buffer base material layer. The elastic layer can improve the elasticity of the surface coating layer, so that the surface coating layer can improve the elasticity of the packaging structure. The protective layer can protect the relatively soft elastic layer, prevent the elastic layer from being worn, scratched and the like, and affect the performance of the elastic layer. The surface coating layer arranged on the buffer base material layer can effectively improve the service life of the packaging structure, is beneficial to the repeated use of the packaging structure, and reduces the generation of "white pollution".

Description

Technical Field

[0001] This application relates to the field of packaging technology, and more particularly to a packaging structure and a household appliance. Background Technology

[0002] During the transportation of large home appliances (such as televisions, washing machines, air conditioners, etc.), packaging devices are usually required to protect the appliances from damage caused by bumps, impacts, or other external forces.

[0003] Currently, commonly used packaging devices are generally divided into boxes and internal packaging structures. Within the packaging device, the packaging structure plays a primary protective role, encasing the appliance and cushioning most of the external forces experienced during bumps or impacts. Therefore, foam is commonly used as a material for these packaging structures to provide good cushioning. However, after the user removes the appliance from the packaging structure, it is easily damaged during the removal process and may also leave foam residue. This not only may result in the packaging structure being unusable, but the foam residue can also contribute to "white pollution." Utility Model Content

[0004] This application discloses a packaging structure and a household appliance, which are used to improve the structural strength of the packaging structure and increase the reusability of the packaging structure.

[0005] To achieve the above objectives, in a first aspect, this application discloses a packaging structure for packaging household appliances, the packaging structure comprising:

[0006] Buffer substrate layer;

[0007] A surface coating is disposed on the surface of the buffer substrate layer and extends along the thickness direction of the buffer substrate layer. The surface coating comprises:

[0008] A base coating layer is disposed on the surface of the buffer substrate layer;

[0009] An elastic layer is disposed on the base layer and configured to buffer the force applied to the buffer substrate layer. The base layer is configured to anchor the elastic layer to the buffer substrate layer.

[0010] This application provides a surface coating on the surface of a cushioning substrate layer. The surface coating includes a primer layer, an elastic layer, and a protective layer, sequentially disposed. The primer layer is disposed on the surface of the cushioning substrate layer, and the elastic layer is disposed on top of the primer layer. Thus, the primer layer enables a stable connection between the elastic layer and the cushioning substrate layer. Furthermore, when the cushioning substrate layer uses, for example, polyurethane foam, the primer layer fills the loose foam gaps within the cushioning substrate layer, making the structure of the cushioning substrate layer more stable. In other words, the primer layer not only stabilizes the structure of the cushioning substrate layer but also anchors the elastic layer to the cushioning substrate layer. The elastic layer disposed on top of the primer layer enhances the overall elasticity of the surface coating, thereby improving the elasticity of the packaging structure and enhancing its cushioning effect against external forces, preventing damage to the packaging structure under stretching, bending, or other conditions.

[0011] Therefore, the surface coating provided on the buffer substrate layer in this application can effectively improve the service life of the packaging structure, facilitate the reuse of the packaging structure, and thus reduce the generation of "white pollution".

[0012] As some alternative embodiments, along the thickness direction of the packaging structure, the elastic layer includes:

[0013] An anchoring layer is disposed on the base coating layer and configured to be anchored to the base coating layer;

[0014] A main body layer, disposed on the anchoring layer, configured to buffer the forces acting on the buffer substrate layer; and / or,

[0015] The surface coating also includes:

[0016] A protective layer is disposed on the surface of the elastic layer and is configured to protect the elastic layer.

[0017] On the one hand, this application sets the elastic layer in layers. First, an anchoring layer is set, which forms a stable anchor with the base layer, ensuring the elastic layer is stably positioned on the cushioning substrate layer. Then, a main layer is set on the anchoring layer, providing the primary elasticity. After the main layer is set, the elastic layer as a whole has good elasticity. When the packaging structure is subjected to external forces, the elasticity provided by the main layer can effectively buffer the external forces, reducing the risk of damage to the packaging structure. Furthermore, the main layer provides primary protection. When the packaging structure is damaged, the outermost main layer absorbs the damage, preventing damage to the cushioning substrate layer, thus ensuring the normal use of the overall packaging structure.

[0018] On the other hand, when setting the surface coating, this application sets a protective layer on the elastic layer to protect the elastic layer, thereby preventing the elastic layer from being worn, scratched, etc., and avoiding affecting the performance of the elastic layer.

[0019] As some optional implementations, the elastic layer further includes:

[0020] A leveling layer is attached to the surface of the main body layer opposite to the anchoring layer, and the leveling layer is configured to level the surface of the main body layer.

[0021] This application takes into account that after the anchoring layer and the main body layer are sequentially set on the elastic layer, the surface of the main body layer is relatively rough, which may result in a rough appearance of the surface coating, and consequently, a rough appearance of the packaging structure. Furthermore, if the protective layer is directly set on the main body layer, it may be difficult to evenly distribute the protective layer on the main body layer. Therefore, this application adds a leveling layer to the surface of the main body layer, making the elastic layer smooth and improving the overall aesthetics of the packaging structure. In addition, the smooth surface of the elastic layer facilitates the even distribution of the protective layer on its surface.

[0022] As some alternative implementations, the thickness of the main body layer is greater than the thickness of the anchoring layer and the leveling layer.

[0023] The main layer, which provides the primary elasticity, is relatively thick, while the anchoring and leveling layers are relatively thin. This means the thickness of the elastic layer can be controlled through the main layer, preventing the anchoring and leveling layers from becoming too thick and causing the overall elastic layer to be excessively thick. This avoids situations where the overall thickness of the packaging structure with an excessively thick elastic layer makes it difficult to pack into boxes for transportation. Furthermore, using relatively less elastic layer coating helps control production costs.

[0024] As some alternative implementations, the thickness of the main body layer is h1, satisfying: 300μm≤h1≤600μm; and / or,

[0025] The thickness of the anchoring layer is h2, satisfying: 100μm≤h2≤400μm; and / or,

[0026] The thickness of the leveling layer is h3, which satisfies the following condition: 100μm≤h3≤500μm.

[0027] For the main body layer, this application controls the thickness of the main body layer to be between 300μm and 600μm. On the one hand, this prevents the main body layer thickness from being less than 300μm, as this weakens the elasticity of the main body layer and may affect the protective function of the elastic layer, making the main body layer prone to damage. On the other hand, it avoids the main body layer thickness from exceeding 600μm, as this may result in an excessively thick overall elastic layer and an excessively thick main body layer, hindering the drying of the main body layer during spraying or brushing. Therefore, this application controls the thickness of the main body layer to be between 300μm and 600μm, which not only provides good elasticity and protection but also allows the main body layer to be formed quickly during application, improving production efficiency.

[0028] For the anchoring layer, this application controls the thickness of the anchoring layer to be between 100μm and 400μm. On the one hand, this prevents the anchoring layer thickness from being less than 100μm. When the anchoring layer thickness is less than 100μm, it is too thin, which is not conducive to the anchoring of the base coating and may easily cause the elastic layer to detach from the base coating. On the other hand, this application also prevents the anchoring layer thickness from being greater than 400μm. When the anchoring layer thickness is greater than 400μm, the overall thickness of the elastic layer may be too thick, which may lead to an excessively thick packaging structure. This would make the gap between the outer surface of the packaging structure and the inner surface of the packaging box too tight, which may make it difficult to install the packaging structure into the packaging box. Therefore, this application controls the thickness of the anchoring layer to be between 100μm and 400μm, which not only ensures the stable anchoring of the elastic layer and the base coating, but also does not affect the installation of the packaging structure into the packaging box.

[0029] For the leveling layer, this application controls the thickness of the leveling layer to be between 100μm and 500μm. On the one hand, this prevents the leveling layer thickness from being less than 100μm, as this would make it difficult to cover the uneven surface of the main body layer, resulting in a poor leveling effect. On the other hand, it prevents the leveling layer thickness from exceeding 500μm, as this could lead to an excessively thick overall elastic layer, which in turn could result in an excessively thick packaging structure. This would make the gap between the outer surface of the packaging structure and the inner surface of the packaging box too tight, potentially hindering the installation of the packaging structure into the box. Therefore, by controlling the thickness of the leveling layer to be between 100μm and 500μm, this application not only effectively levels the main body layer and improves the appearance of the surface coating, but also does not affect the installation of the packaging structure into the packaging box.

[0030] As some alternative implementations, the elongation at break of the elastic layer is 300%-800%.

[0031] This application controls the elastic elongation of the elastic layer within the range of 300%-800%. On one hand, when the elastic layer deforms along with the buffer substrate layer, a higher elastic elongation results in better toughness, allowing it to effectively deform with the buffer substrate layer without tearing. However, if the elongation at break is too high, the elastic layer's strength is low, making it prone to breakage. Conversely, a lower elastic elongation results in better strength and less likelihood of breakage. However, if the elastic elongation is too low (less than 300%), the elastic layer may break when stretched along with the buffer substrate layer. Therefore, this application controls the elastic elongation of the elastic layer within the range of 300%-800%, maintaining both good toughness and strength, preventing tensile breakage and reducing overall damage.

[0032] As some alternative implementations, the elastic layer is made of polyurea material; and / or,

[0033] The base coating is made of epoxy resin; and / or,

[0034] The protective layer is made of polyurethane. For the elastic layer, this application uses polyurea, which, as an elastic material, has good elasticity and can effectively cushion external forces on the packaging structure. Furthermore, polyurea also possesses waterproof, corrosion-resistant, and wear-resistant properties. Applying polyurea to the surface of the cushioning substrate layer can enhance its waterproof, corrosion-resistant, and wear-resistant capabilities, thereby extending the service life of the packaging structure.

[0035] For the primer layer, the material used in this application is epoxy resin. Epoxy resin has good fluidity before curing. When the buffer substrate layer is foam or fiber, the epoxy resin can flow into the gaps between the foam particles or fibers. After the epoxy resin is cured, the part of the epoxy resin that flows into the buffer substrate layer can enhance the strength of the buffer substrate layer, while enabling the primer layer to form a stable connection with the buffer substrate layer through the anchoring effect.

[0036] For the protective layer, the material used in this application is polyurethane. Polyurethane has a certain degree of elasticity, which can provide a certain cushioning effect for the packaging structure. In addition, polyurethane also has wear-resistant and anti-aging properties. Placing polyurethane as a protective layer on the elastic layer can improve the wear resistance and anti-aging properties of the elastic layer, thereby further improving the service life of the packaging structure.

[0037] As some alternative implementations, the thickness of the elastic layer is h4, satisfying: 0.5mm ≤ h4 ≤ 1.5mm; and / or,

[0038] The thickness of the base coating is h5, satisfying: 10μm≤h5≤30μm; and / or,

[0039] The thickness of the protective layer is h6, which satisfies: 5μm≤h6≤15μm.

[0040] This application controls the thickness of the elastic layer to be between 0.5mm and 1.5mm. On the one hand, controlling the thickness of the elastic layer to be no less than 0.5mm is crucial. If the thickness of the elastic layer is too small, it is prone to damage such as punctures and scratches, and the elastic cushioning capacity may be insufficient. On the other hand, controlling the thickness of the elastic layer to be no more than 1.5mm is also important. If the thickness of the elastic layer is too large, it may result in an excessively thick overall surface coating, which could lead to an overly thick packaging structure. When the packaging structure is installed in the box, the gap between the packaging structure and the box may be too small, making it difficult to install the packaging structure. Therefore, this application controls the thickness of the elastic layer to around 0.5mm-1.5mm, which maintains good elasticity and protective effect while preventing the elastic layer from making the packaging structure too thick, thus facilitating the installation of the packaging structure inside the box.

[0041] This application controls the thickness of the primer coating to be between 10μm and 30μm. On one hand, this prevents the primer coating thickness from being less than 10μm. When the primer coating thickness is too small, it is difficult for the primer coating to penetrate the foam or fiber gaps in the buffer substrate layer, hindering the anchoring of the buffer substrate layer to the elastic layer, and resulting in poor protection for the buffer substrate layer. On the other hand, controlling the primer coating thickness to be no greater than 30μm is also beneficial. If an epoxy resin material is used, an excessively thick primer coating is difficult to dry, hindering the application of other coatings and potentially affecting production efficiency. Therefore, this application controls the thickness of the primer coating to be between 10μm and 30μm, which not only ensures anchoring of the primer coating to the elastic layer but also facilitates drying, thus benefiting the application of subsequent coatings.

[0042] This application controls the thickness of the protective layer to be between 5μm and 15μm. On one hand, this prevents the protective layer from being less than 5μm thick, as this would make it prone to wear or damage, potentially reducing its abrasion and scratch resistance. On the other hand, it prevents the protective layer from being greater than 15μm thick, as this would result in a high degree of hardness, potentially causing the elastic layer surface to become too hard and reducing its cushioning effect. Therefore, controlling the protective layer thickness to 5μm-15μm not only ensures the abrasion and scratch resistance of the protective layer but also maintains the cushioning effect of the elastic layer.

[0043] As some alternative implementations, the material of the buffer substrate layer is EPS material or fiber material.

[0044] When the cushioning substrate layer of this application is made of EPS (expandable polystyrene) or fiber material, on the one hand, when the cushioning substrate layer of this application is made of EPS material, EPS material, due to its lightweight and easy-to-form characteristics, is easy to directly process and form during the processing and has a good elastic cushioning effect, thus effectively protecting the packaged product as a cushioning substrate layer. On the other hand, when the cushioning substrate layer is made of fiber material, such as wood fiber, paper fiber, or bamboo fiber, it has high strength, which can effectively prevent damage to the cushioning substrate layer, and as a green and environmentally friendly material, it is conducive to the recycling of the cushioning substrate layer.

[0045] Secondly, this application also discloses a household appliance, including:

[0046] Packing boxes;

[0047] The packaging structure as described in the first aspect is located inside the packaging box;

[0048] The main body of the electrical appliance is packaged within the packaging structure.

[0049] In the packaging device disclosed in this application, the packaging structure disclosed in the first aspect can not only effectively protect the electrical appliance body protected by the packaging structure, but also the packaging structure is not easily damaged and is easy to recycle. When the electrical appliance body needs to be returned or exchanged or packed for transportation, the packaging structure can be reused, realizing the effective reuse of the packaging structure.

[0050] Compared with the prior art, this application has at least the following beneficial effects:

[0051] This application provides a surface coating on the surface of a cushioning substrate layer. The surface coating includes a primer layer, an elastic layer, and a protective layer, sequentially disposed. The primer layer is disposed on the surface of the cushioning substrate layer, and the elastic layer is disposed on top of the primer layer. Thus, the primer layer enables a stable connection between the elastic layer and the cushioning substrate layer. Furthermore, when the cushioning substrate layer uses, for example, polyurethane foam, the primer layer fills the relatively loose foam gaps within the cushioning substrate layer, making the structure of the cushioning substrate layer more stable. In other words, the primer layer not only stabilizes the structure of the cushioning substrate layer but also anchors the elastic layer to the cushioning substrate layer. The elastic layer disposed on top of the primer layer enhances the overall elasticity of the surface coating, thereby improving the elasticity of the packaging structure and enhancing its cushioning effect against external forces, preventing damage to the packaging structure under tension, bending, or other conditions. Finally, the protective layer is disposed on the elastic layer to protect it, preventing wear, scratches, or other damage that could affect its performance.

[0052] Therefore, the surface coating provided on the buffer substrate layer in this application can effectively improve the service life of the packaging structure, facilitate the reuse of the packaging structure, and thus reduce the generation of "white pollution". Attached Figure Description

[0053] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0054] Figure 1 This is a schematic diagram of a packaging structure disclosed in an embodiment of this application;

[0055] Figure 2 This is another schematic diagram of the packaging structure disclosed in the embodiments of this application;

[0056] Figure 3 for Figure 1 An exploded view of the packaging structure;

[0057] Figure 4 This is a partial schematic diagram of the packaging structure disclosed in an embodiment of this application;

[0058] Figure 5 This is another partial schematic diagram of the packaging structure disclosed in the embodiments of this application;

[0059] Figure 6 This is another partial schematic diagram of the packaging structure disclosed in the embodiments of this application;

[0060] Figure 7 This is a schematic diagram of a surface coating structure disclosed in an embodiment of this application;

[0061] Figure 8 This is a schematic diagram of another structure of the surface coating disclosed in the embodiments of this application;

[0062] Figure 9 This is a schematic diagram of the structure of a household appliance disclosed in an embodiment of this application;

[0063] Figure 10 This is a disassembled schematic diagram of the household appliance disclosed in the embodiments of this application.

[0064] Explanation of reference numerals in the attached figures:

[0065] 10. Packaging structure; 1. Cushioning substrate layer; 2. Surface coating; 21. Primer coating; 22. Elastic layer; 221. Anchoring layer; 222. Main body layer; 223. Leveling layer; 23. Protective layer;

[0066] 100. Household appliances; 20. Packaging boxes; 30. Appliance body. Detailed Implementation

[0067] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0068] In this application, the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to be constructed and operated in a specific orientation.

[0069] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0070] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0071] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0072] During the transportation of home appliances (such as televisions, washing machines, air conditioners, etc.), packaging devices are usually required to protect the products from damage caused by bumps, impacts, or other external forces.

[0073] Currently, commonly used packaging devices are generally divided into boxes and internal packaging structures. Within the packaging device, the packaging structure plays a primary protective role, encasing the appliance and cushioning most of the external forces experienced during bumps or impacts. Therefore, foam is a common material used in packaging structures to provide good cushioning. However, after the user removes the appliance from the packaging structure, it is easily damaged during the removal process and may also generate foam residue. For example, common foam materials are usually formed into small foam particles, which are then used to form the packaging structure. This makes the packaging structure not only easily damaged, but the resulting foam particles are also difficult to clean and recycle, potentially leading to a situation where the packaging structure cannot be reused. Furthermore, the foam residue can easily cause "white pollution."

[0074] In response, this application discloses a packaging structure and a household appliance that not only enhances the strength of the packaging structure and reduces the probability of damage to the packaging structure, but also extends the service life of the packaging structure, enabling the packaging structure to be recycled or reused.

[0075] The technical solution of this application will be further described below with reference to the embodiments and accompanying drawings.

[0076] Firstly, please refer to the following: Figures 1 to 3 This application discloses a packaging structure 10 for packaging household appliances, such as refrigerators, washing machines, and air conditioners. These appliances are heavy and bulky, making them prone to bumps and scratches during transportation or handling. Therefore, the packaging structure 10 requires high cushioning protection capabilities for these appliances.

[0077] Understandably, to better protect home appliances, packaging structure 10 typically wraps around the perimeter of the appliance. For example, see... Figure 2 as well as Figure 3 The packaging structure 10 can be wrapped around the outer periphery of the home appliance product in either an integrated or separate structure.

[0078] For example, when the packaging structure 10 is a one-piece structure, a space for accommodating the home appliance can be formed inside the packaging structure 10, and then the home appliance can be placed into the space. When the packaging structure 10 is a split structure, multiple parts of the packaging structure 10 are sequentially spliced ​​together around the periphery of the home appliance, and finally assembled into a whole packaging structure 10 to wrap the home appliance.

[0079] Please see Figure 4 Among them, such as Figure 4As shown in the example, X indicates the thickness direction of the packaging structure 10. In some embodiments, the packaging structure 10 includes a cushioning substrate layer 1 and a surface coating 2. The cushioning substrate layer 1 serves as the protective body for the household appliance, while the surface coating 2 is disposed on the surface of the cushioning substrate layer 1 to enhance its bending resistance, wear resistance, and anti-aging properties, strengthen its structure, and extend its service life.

[0080] For example, the surface coating 2 can be applied to the surface of the buffer substrate layer 1 by spraying, brushing, or other methods.

[0081] Understandably, in order to enhance the effective protection of the buffer substrate layer 1, the surface coating 2 is wrapped around the surface of the buffer substrate layer 1.

[0082] Optionally, when setting the surface coating 2, the surface of the buffer substrate layer 1 can be surface treated, for example, removing parting lines, flash, etc., and then cleaning with a cleaning agent.

[0083] In some embodiments, the material of the buffer substrate layer 1 may be EPS (expandable polystyrene) or fiber material.

[0084] For example, the fiber material can be paper fiber, wood fiber, bamboo fiber, or other fiber materials, and can be shaped by weaving.

[0085] When the material of the cushioning substrate layer 1 in this application is EPS (expandable polystyrene) or fiber material, on the one hand, when the cushioning substrate layer 1 is made of EPS material, EPS material, due to its lightweight and easy-to-form characteristics, is easy to directly process and form during the processing and has a good elastic cushioning effect, thus effectively protecting the packaged product as the cushioning substrate layer 1. On the other hand, when the cushioning substrate layer 1 is made of fiber material, such as wood fiber, paper fiber, or bamboo fiber, it has high strength, which can effectively prevent damage to the cushioning substrate layer 1, and as a green and environmentally friendly material, it is conducive to the recycling of the cushioning substrate layer 1.

[0086] Please see Figure 4 In some embodiments, along the thickness direction X of the buffer substrate layer 1, the surface coating 2 sequentially includes a base coating 21, an elastic layer 22, and a protective layer 23. The base coating 21 is disposed on the surface of the buffer substrate layer 1. The elastic layer 22 is disposed on the base coating 21 and is configured to buffer the forces acting on the buffer substrate layer 1. The base coating 21 is configured to anchor the elastic layer 22 to the buffer substrate layer 1. The protective layer 23 is disposed on the surface of the elastic layer 22 and is configured to protect the elastic layer 22.

[0087] This application provides a surface coating 2 on the surface of a cushioning substrate layer 1. The surface coating 2 includes a base coating 21, an elastic layer 22, and a protective layer 23, which are sequentially disposed. The base coating 21 is first disposed on the surface of the cushioning substrate layer 1, and then the elastic layer 22 is disposed on the base coating 21. This allows the base coating 21 to form a stable connection between the elastic layer 22 and the cushioning substrate layer 1. Furthermore, when the cushioning substrate layer 1 is made of, for example, polyurethane foam, the first-disposed base coating 21 can fill the gaps between loose EPS particles or fibers in the cushioning substrate layer 1, making the structure of the cushioning substrate layer 1 more stable. In other words, the base coating 21 stabilizes the structure of the cushioning substrate layer 1 while also anchoring the elastic layer 22 to the cushioning substrate layer 1. The placement of the elastic layer 22 on the base coating 21 enhances the overall elasticity of the surface coating 2, thereby improving the elasticity of the packaging structure 10 and enhancing its cushioning effect against external forces, preventing damage to the packaging structure 10 under stretching, bending, or other conditions. Finally, a protective layer 23 is provided on the elastic layer 22 to protect the elastic layer 22. The protective layer 23 provided on the elastic layer 22 can protect the relatively soft elastic layer 22 and prevent the elastic layer 22 from being worn, scratched, etc., so as to avoid affecting the performance of the elastic layer 22.

[0088] Therefore, the surface coating 2 provided on the buffer substrate layer 1 in this application can effectively improve the service life of the packaging structure 10, facilitate the reuse of the packaging structure 10, and thus reduce the generation of "white pollution".

[0089] In some embodiments, the material of the elastic layer 22 may be a polyurea material.

[0090] For the elastic layer 22, the material used in this application is polyurea. As an elastic material, polyurea has good elasticity and can effectively buffer the external forces subjected to the packaging structure 10. Moreover, polyurea also has waterproof, anti-corrosion, and wear-resistant properties. Applying polyurea to the surface of the buffer substrate layer 1 can improve the waterproof, anti-corrosion, and wear-resistant capabilities, thereby extending the service life of the packaging structure 10.

[0091] Optionally, the polyurea material may be aliphatic polyurea or third-generation polyaspartic ester polyurea, etc., and this application does not make specific limitations.

[0092] In some embodiments, the elongation at break of the elastic layer 22 may be 300%-800%.

[0093] For example, the elongation at break of the elastic layer 22 can be 300%-400%, 400%-500%, 500%-600%, 600%-700%-800%, etc. For example, the elongation at break of the elastic layer 22 can be 300%, 350%, 400%, 450%, 500%, 550%, 600%, 650%, 700%, 750%, or 800%, etc.

[0094] This application controls the elastic elongation of the elastic layer 22 to be between 300% and 800%. On the one hand, when the elastic layer 22 deforms with the buffer substrate layer 1, a larger elastic elongation results in better toughness, allowing it to effectively deform with the buffer substrate layer 1 without tearing. However, if the elongation at break is too large, i.e., greater than 800%, the strength of the elastic layer 22 is low, making it prone to breakage. Conversely, a smaller elastic elongation results in better strength and less likelihood of breakage. However, if the elastic elongation is too small, i.e., less than 300%, the elastic layer 22 may break when stretched with the buffer substrate layer 1.

[0095] Therefore, this application controls the elastic elongation of the elastic layer 22 to 300%-800%, which not only allows the elastic layer 22 to maintain good toughness but also good strength, preventing the elastic layer 22 from tensile fracture and reducing damage to the elastic layer 22.

[0096] In some embodiments, the material of the base coating 21 may be an epoxy resin material.

[0097] For the base coating 21, the material used in this application is epoxy resin. Epoxy resin has good fluidity before curing. When the buffer substrate layer 1 is foam or fiber, the epoxy resin can flow into the gaps between the foam particles or fibers. After the epoxy resin is cured, the part of the epoxy resin that flows into the buffer substrate layer 1 can enhance the strength of the buffer substrate layer 1, and at the same time, enable the base coating 21 to form a stable connection with the buffer substrate layer 1 through the anchoring effect.

[0098] Optionally, the epoxy resin material may be bisphenol A type epoxy resin or modified epoxy resin (such as organosilicon modified epoxy resin), etc., and this application does not make specific limitations.

[0099] In some embodiments, the protective layer 23 may be made of polyurethane.

[0100] For the protective layer 23, the material used in this application is polyurethane. Polyurethane has a certain elasticity, which can provide a certain cushioning effect for the packaging structure 10. In addition, polyurethane also has wear-resistant and anti-aging properties. By setting polyurethane as the protective layer 23 on the elastic layer 22, the wear resistance and anti-aging properties of the elastic layer 22 can be improved, thereby further improving the service life of the packaging structure 10.

[0101] Please see Figure 5 In some embodiments, along the thickness direction of the packaging structure 10, the elastic layer 22 includes an anchoring layer 221 and a main body layer 222. The anchoring layer 221 is disposed on the base coating layer 21 and configured to be anchored to the base coating layer 21. The main body layer 222 is disposed on the anchoring layer 221 and configured to cushion the forces acting on the base material layer 1.

[0102] It is understandable that the anchoring layer 221 and the main body layer 222 are made of the same material, but the anchoring layer 221 and the main body layer 222 are set separately.

[0103] In this application, the elastic layer 22 is constructed in layers. First, an anchoring layer 221 is constructed, which forms a stable anchor with the base layer 21, ensuring the elastic layer 22 is stably positioned on the buffer substrate layer 1. Then, a main layer 222 is constructed on the anchoring layer 221, providing the primary elasticity. After the main layer 222 is constructed, the elastic layer 22 exhibits good overall elasticity. When the packaging structure 10 is subjected to external forces, the elasticity provided by the main layer 222 effectively buffers these forces, reducing the risk of damage to the packaging structure 10. Furthermore, the main layer 222 provides primary protection. When the packaging structure 10 is damaged, the outermost main layer 222 absorbs the damage, preventing direct damage to the buffer substrate layer 1 and ensuring the normal operation of the overall packaging structure 10.

[0104] Please see Figure 6 Optionally, the elastic layer 22 may further include a leveling layer 223. The leveling layer 223 is connected to the side surface of the main body layer 222 facing away from the anchoring layer 221, and the leveling layer 223 is configured to level the surface of the main body layer 222.

[0105] This application takes into account that after the anchoring layer 221 and the main body layer 222 are sequentially set on the elastic layer 22, the surface of the main body layer 222 is relatively rough, which may result in a rough appearance of the surface coating 2, and consequently a rough appearance of the packaging structure 10. Furthermore, if a protective layer 23 is set on the main body layer 222, it may be difficult to evenly distribute the protective layer 23 on the main body layer 222. Therefore, this application sets a leveling layer 223 on the surface of the main body layer 222, making the elastic layer 22 smooth and improving the overall aesthetics of the packaging structure 10. In addition, the smooth surface of the elastic layer 22 facilitates the even distribution of the protective layer 23 on the surface of the elastic layer 22.

[0106] For example, when the elastic layer 22 is applied on the base layer 21, the anchoring layer 221 is first applied on the base layer, then the main layer 222 is applied on the anchoring layer 221, and finally the leveling layer 223 is applied on the main layer 222. The interval between each layer is 10 minutes, and the curing time at room temperature is 24 hours, so that the elastic layer 22 is set in three layers.

[0107] Please see Figure 6 In some embodiments, the thickness of the main body layer 222 is greater than the thickness of the anchoring layer 221 and the leveling layer 223.

[0108] In this application, the elastic layer 22 is composed of three layers. The main layer 222, which provides the primary elasticity, is relatively thick, while the anchoring layer 221 and the leveling layer 223 are relatively thin. This means the thickness of the elastic layer 22 can be controlled by the main layer 222, preventing the anchoring layer 221 and the leveling layer 223 from becoming too thick, which would result in an excessively thick overall thickness of the elastic layer 22. This avoids a situation where the packaging structure 10, with an excessively thick elastic layer 22, would be difficult to pack into the packaging box 20 for transportation. Furthermore, the use of less coating material for the elastic layer 22 helps control production costs.

[0109] Please see Figure 7 In some embodiments, the thickness of the main body layer 222 is h1, which satisfies: 300μm≤h1≤600μm.

[0110] For example, h1 can be 300μm-350μm, 350μm-400μm, 400μm-450μm, 450μm-500μm, 500μm-550μm, 550μm-600μm, etc. For instance, h1 can be 300μm, 325μm, 350μm, 375μm, 400μm, 425μm, 450μm, 475μm, 500μm, 525μm, 550μm, 575μm, or 600μm, etc.

[0111] For the main body layer 222, this application controls the thickness of the main body layer 222 to be between 300μm and 600μm. On the one hand, this prevents the thickness of the main body layer 222 from being less than 300μm. When the thickness of the main body layer 222 is less than 300μm, the elastic effect of the main body layer 222 is weak, and it may affect the protective function of the elastic layer 22, making the main body layer 222 easy to break. On the other hand, this application avoids the thickness of the main body layer 222 from being greater than 600μm. When the thickness of the main body layer 222 is greater than 600μm, the overall thickness of the elastic layer 222 may be too thick, and the excessive thickness of the main body layer 222 will make it difficult to dry during the spraying or brushing process. Therefore, this application controls the thickness of the main body layer 222 to be between 300μm and 600μm, which not only provides good elasticity and protection, but also allows the main body layer 222 to be formed quickly during installation, improving production efficiency.

[0112] Please see Figure 7 In some embodiments, the thickness of the anchoring layer 221 may be h2, satisfying: 100μm≤h2≤400μm.

[0113] For example, h2 can be 100μm-150μm, 150μm-200μm, 200μm-250μm, 250μm-300μm, 300μm-350μm, 350μm-400μm, etc. For instance, h2 can be 100μm, 125μm, 150μm, 175μm, 200μm, 225μm, 250μm, 275μm, 300μm, 325μm, 350μm, 375μm, or 400μm, etc.

[0114] Regarding the anchoring layer 221, this application controls the thickness of the anchoring layer 221 to be between 100μm and 400μm. On the one hand, this prevents the thickness of the anchoring layer 221 from being less than 100μm. When the thickness of the anchoring layer 221 is less than 100μm, the anchoring layer 221 is too thin, which is not conducive to the anchoring of the base coating 21 and may easily cause the elastic layer 22 to detach from the base coating 21. On the other hand, this prevents the thickness of the anchoring layer 221 from being greater than 400μm. When the thickness of the anchoring layer 221 is greater than 400μm, the anchoring layer 221 may cause the overall thickness of the elastic layer 22 to be too thick, which may in turn cause the thickness of the packaging structure 10 to be too thick. This would make the gap between the outer surface of the packaging structure 10 and the inner surface of the packaging box 20 too tight, which may make it inconvenient to put the packaging structure 10 into the packaging box 20. Therefore, this application controls the thickness of the anchoring layer 221 to 100μm-400μm, which not only enables the anchoring layer 221 to stably anchor the elastic layer 22 and the base layer 21, but also does not affect the installation of the packaging structure 10 into the packaging box 20.

[0115] Please see Figure 7In some embodiments, the thickness of the leveling layer 223 may be h3, satisfying: 100μm≤h3≤500μm.

[0116] For example, h3 can be 100μm-150μm, 150μm-200μm, 200μm-250μm, 250μm-300μm, 300μm-350μm, 350μm-400μm, 400μm-450μm, 450μm-500μm, etc. For instance, h3 can be 100μm, 125μm, 150μm, 175μm, 200μm, 225μm, 250μm, 275μm, 300μm, 325μm, 350μm, 375μm, 400μm, 425μm, 450μm, 475μm, or 500μm, etc.

[0117] Regarding the leveling layer 223, this application controls the thickness of the leveling layer 223 to be between 100μm and 500μm. On the one hand, this prevents the thickness of the leveling layer 223 from being less than 100μm. If the thickness of the leveling layer 223 is less than 100μm, it will be difficult for the leveling layer 223 to cover the uneven main body layer 222, resulting in a poor leveling effect on the surface of the main body layer 222. On the other hand, this prevents the thickness of the leveling layer 223 from being greater than 500μm. When the thickness of the leveling layer 223 is greater than 500μm, the leveling layer 223 may cause the overall thickness of the elastic layer 22 to be too thick, which may in turn cause the thickness of the packaging structure 10 to be too thick. This would make the gap between the outer surface of the packaging structure 10 and the inner surface of the packaging box 20 too tight, making it difficult to put the packaging structure 10 into the packaging box 20. Therefore, when the thickness of the leveling layer 223 is controlled between 100μm and 500μm, this application can not only effectively level the surface of the main layer 222 and improve the appearance of the surface coating 2, but also does not affect the installation of the packaging structure 10 into the packaging box 20.

[0118] Please see Figure 8 In some embodiments, the thickness of the elastic layer 22 may be h4, satisfying: 0.5mm≤h4≤1.5mm.

[0119] For example, h4 can be 0.5mm-0.75mm, 0.75mm-1.0mm, 1.0mm-1.25mm, 1.25mm-1.5mm, etc. For instance, h4 can be 0.5mm, 0.65mm, 0.75mm, 0.85mm, 1.0mm, 1.15mm, 1.25mm, 1.35mm, or 1.5mm, etc.

[0120] Regarding the elastic layer 22, this application controls the thickness of the elastic layer 22 to be between 0.5mm and 1.5mm. On the one hand, controlling the thickness of the elastic layer 22 to be no less than 0.5mm is crucial. If the thickness of the elastic layer 22 is too small, it is prone to damage such as puncture or scratch, and the elastic cushioning capacity may be insufficient. On the other hand, controlling the thickness of the elastic layer 22 to be no more than 1.5mm is also important. If the thickness of the elastic layer 22 is too large, it may result in an excessively thick overall thickness of the surface coating 2, which in turn may cause the packaging structure 10 to be too thick. When the packaging structure 10 is installed in the packaging box 20, the gap between the packaging structure 10 and the packaging box 20 may be too small, making it difficult to install the packaging structure 10. Therefore, this application controls the thickness of the elastic layer 22 to be around 0.5mm-1.5mm, which can maintain good elasticity and protective effect of the elastic layer 22 while avoiding the elastic layer 22 causing the packaging structure 10 to be too thick, thus facilitating the installation of the packaging structure 10 in the packaging box 20.

[0121] Please see Figure 8 In some embodiments, the thickness of the base coating 21 can be h5, satisfying: 10μm≤h5≤30μm.

[0122] For example, h5 can be 10μm-15μm, 15μm-20μm, 20μm-25μm, 25μm-30μm, etc. For instance, h5 can be 10μm, 13μm, 15μm, 17μm, 20μm, 23μm, 25μm, 27μm, or 30μm, etc.

[0123] For the primer layer 21, this application controls the thickness of the primer layer 21 to be between 10μm and 30μm. On the one hand, this prevents the thickness of the primer layer 21 from being less than 10μm. If the thickness of the primer layer 21 is too small, it will be difficult for the primer layer 21 to enter the foam gaps or fiber gaps of the buffer substrate layer 1, making it difficult for the primer layer 21 to anchor the buffer substrate layer 1 to the elastic layer 22, and the protective effect of the primer layer 21 on the buffer substrate layer 1 will be poor. On the other hand, controlling the thickness of the primer layer 21 to be no more than 30μm is also important. If the thickness of the primer layer 21 is too thick, if the primer layer 21 is made of epoxy resin, it will be difficult to dry, which will be inconvenient for the application of other coatings and may affect production efficiency. Therefore, this application controls the thickness of the primer layer 21 to be between 10μm and 30μm, which not only allows the primer layer 21 to anchor to the elastic layer 22, but also makes the primer layer 21 easy to dry, which is beneficial for the application of subsequent coatings.

[0124] Please see Figure 8 In some embodiments, the thickness of the protective layer 23 may be h6, satisfying: 5μm≤h6≤15μm.

[0125] For example, h6 can be 5μm-7μm, 7μm-9μm, 9μm-11μm, 11μm-13μm, 13μm-15μm, etc. For instance, h6 can be 5μm, 6μm, 7μm, 8μm, 9μm, 10μm, 11μm, 12μm, 13μm, 14μm, or 15μm, etc.

[0126] Regarding the protective layer 23, this application controls its thickness to be between 5μm and 15μm. On one hand, this prevents the protective layer 23 from being less than 5μm thick, as this would make it prone to wear or damage, potentially reducing its anti-abrasion and anti-scratch performance. On the other hand, it prevents the protective layer 23 from being greater than 15μm thick, as this would result in excessive hardness, potentially causing the surface of the elastic layer 22 to become too hard and reducing its elastic cushioning effect. Therefore, controlling the thickness of the protective layer 23 to be between 5μm and 15μm not only ensures its anti-abrasion and anti-scratch performance but also maintains the elastic cushioning effect of the elastic layer 22.

[0127] The packaging structure disclosed in this application is compared with existing packaging structures, as shown in Table 1 below.

[0128] Coating adhesion Level 0 > Level 2 / Elastic layer thickness 1.2mm 1.2mm / Cycle life >50 times >50 times 1 time Impact resistance test normal normal cracking

[0129] Table 1

[0130] Example 1 uses a packaging structure with an elastic layer thickness of 1.2 mm in the surface coating and a surface-treated cushioning substrate layer. Example 2 uses a packaging structure with an elastic layer thickness of 1.2 mm in the surface coating and an untreated cushioning substrate layer. The comparative example uses ordinary EPS, which refers to a packaging structure directly formed by processing EPS particles.

[0131] As shown in Table 1, in Examples 1 and 2, the cycle life of the packaging structure was significantly improved after a surface coating was applied to the surface of the cushioning substrate layer 1, and its impact resistance was also significantly enhanced. In contrast, in the comparative example, when only ordinary EPS material was used as the packaging structure, its cycle life and impact resistance were reduced.

[0132] Secondly, please see Figure 9 and Figure 10 This application also discloses a household appliance 100, which includes the packaging structure 10 disclosed in the first aspect and a packaging box 20, with the packaging structure 10 located inside the packaging box 20. The main body of the appliance 30 is packaged inside the packaging structure 10.

[0133] In the household appliance 100 disclosed in this application, the packaging structure 10 disclosed in the first aspect can not only effectively protect the main body of the appliance 30 protected by the packaging structure 10, but also the packaging structure 10 is not easily damaged and is easy to recycle. When the main body of the appliance 30 needs to be returned or exchanged or packed for transportation, the packaging structure 10 can be reused, thus realizing the effective reuse of the packaging structure 10.

[0134] Optionally, the packaging box 20 may be, for example, a cardboard box, a plastic box, etc., and this application does not make specific limitations.

[0135] Optionally, the main appliance 30 may be a television, washing machine, air conditioner, water heater, etc., and this application does not make specific limitations here.

[0136] The packaging structure and household appliance disclosed in the embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the packaging structure and household appliance of this application and its core ideas. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A packaging structure, characterized in that, The packaging structure is used for packaging home appliances, and the packaging structure includes: Buffer substrate layer; A surface coating, wherein the surface coating is disposed on the surface of the buffer substrate layer and extends along the thickness direction of the buffer substrate layer, the surface coating comprising: A base coating layer is disposed on the surface of the buffer substrate layer; An elastic layer is disposed on the base layer and configured to buffer the force applied to the buffer substrate layer. The base layer is configured to anchor the elastic layer to the buffer substrate layer.

2. The packaging structure according to claim 1, characterized in that, Along the thickness direction of the packaging structure, the elastic layer includes: An anchoring layer is disposed on the base coating layer and configured to be anchored to the base coating layer; A main body layer, disposed on the anchoring layer, configured to buffer the forces acting on the buffer substrate layer; and / or, The surface coating also includes: A protective layer is disposed on the surface of the elastic layer and is configured to protect the elastic layer.

3. The packaging structure according to claim 2, characterized in that, The elastic layer further includes: A leveling layer is attached to the surface of the main body layer opposite to the anchoring layer, and the leveling layer is configured to level the surface of the main body layer.

4. The packaging structure according to claim 3, characterized in that, The thickness of the main body layer is greater than the thickness of the anchoring layer and the leveling layer.

5. The packaging structure according to claim 3, characterized in that, The thickness of the main body layer is h1, satisfying: 300μm≤h1≤600μm; and / or, The thickness of the anchoring layer is h2, satisfying: 100μm≤h2≤400μm; and / or, The thickness of the leveling layer is h3, which satisfies the following condition: 100μm≤h3≤500μm.

6. The packaging structure according to any one of claims 1-5, characterized in that, The elongation at break of the elastic layer is 300%-800%.

7. The packaging structure according to any one of claims 1-5, characterized in that, The elastic layer is made of polyurea material; and / or, The base coating is made of epoxy resin; and / or, The protective layer is made of polyurethane.

8. The packaging structure according to any one of claims 1-5, characterized in that, The thickness of the elastic layer is h4, satisfying: 0.5mm ≤ h4 ≤ 1.5mm; and / or, The thickness of the base coating is h5, satisfying: 10μm≤h5≤30μm; and / or, The thickness of the protective layer is h6, which satisfies: 5μm≤h6≤15μm.

9. The packaging structure according to any one of claims 1-5, characterized in that, The material of the buffer substrate layer is EPS material or fiber material.

10. A household appliance, characterized in that, include: Packaging boxes; The packaging structure as described in any one of claims 1-9, wherein the packaging structure is located inside the packaging box; The main body of the electrical appliance is packaged within the packaging structure.

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