A packaging box

Abstract

The application provides a packaging box, which comprises a box body and a bottom cover, wherein the box body has a storage cavity; the box body comprises a side wall plate and a bottom plate, the side wall plate is matched with the bottom plate to enclose the storage cavity, and the storage cavity has an opening arranged opposite to the bottom plate; the bottom cover is located on the side of the bottom plate away from the storage cavity and is connected with the side wall plate; and a heat insulation gap is arranged between the bottom cover and the bottom plate; in this arrangement, the gap between the bottom cover and the bottom plate can effectively reduce the heat transfer between the storage cavity and the supporting structure, and further reduce the heat transfer to the inside of the storage cavity. In this way, during cold chain transportation, the amount of ice bags can be reduced, and the express cost can be reduced.

Description

Technical Field

[0001] This application relates to the field of express logistics technology, specifically to a packaging box. Background Technology

[0002] Currently, the most common disposable packaging method used in the cold chain express delivery industry is "expanded polystyrene foam box + ice packs". This method requires filling the box with a large number of ice packs during transportation to maintain the low-temperature environment inside, resulting in high express delivery costs. Therefore, how to provide a reusable insulated box with better thermal insulation performance is a pressing technical problem that needs to be solved in this field. Utility Model Content

[0003] In view of this, this application provides a packaging box with good heat insulation performance, which can reduce the amount of ice packs used and reduce express delivery costs.

[0004] To achieve the above objectives, this application provides the following technical solution:

[0005] A packaging box, comprising:

[0006] The box has a storage cavity; the box includes a side wall panel and a bottom plate, the side wall panel and the bottom plate cooperate to form the storage cavity, and the storage cavity has an opening facing the bottom plate;

[0007] The bottom cover is located on the side of the base plate away from the storage cavity and is connected to the side wall plate; and there is a heat insulation gap between the bottom cover and the base plate.

[0008] Optionally, the side wall panel is integrally formed with the bottom plate; and / or the side wall panel is provided with a first heat insulation structure inside.

[0009] Optionally, the first heat insulation structure is a heat insulation cavity that can be filled with heat insulation material.

[0010] The side wall panel has an opening at the location where it connects to the bottom cover, which communicates with the heat insulation cavity, so that the bottom cover can close the heat insulation cavity.

[0011] Optionally, an annular groove is provided at the end of the side wall panel near the bottom plate, and the annular groove is arranged around the storage cavity to form the heat insulation cavity.

[0012] Optionally, the surface of the base plate away from the storage cavity is fitted with the inner wall surface of the side wall plate to form a heat insulation groove;

[0013] The bottom cover is connected to the opening of the heat insulation groove and can seal the heat insulation groove.

[0014] Optionally, the bottom cover has a first protrusion on the side facing the bottom plate; the shape of the first protrusion matches the shape of the groove so that the first protrusion can extend into the heat insulation groove and connect with the inner wall surface of the side wall plate.

[0015] Optionally, the packaging box includes a top cover connected to the side wall panel and used to close the storage cavity; and the top cover has a second heat insulation structure on the side facing the storage cavity.

[0016] Optionally, the second heat insulation structure is an aluminum foil bag vacuum sealing structure, and a protective film is provided on the side of the aluminum foil bag vacuum sealing structure away from the top cover.

[0017] Optionally, a limiting step is provided at one end of the side wall panel connected to the top cover, and the limiting surface of the limiting step can abut against the surface of the second heat insulation structure facing the storage cavity, so as to support and limit the second heat insulation structure.

[0018] Optionally, the packaging box includes a box body, a bottom cover, and a top cover;

[0019] The housing, the bottom cover, and / or the top cover are made of foamed polypropylene material.

[0020] The packaging box provided in this application effectively reduces heat transfer between the storage cavity and the supporting structure (such as the ground) by setting an insulation gap between the bottom cover and the bottom plate, thereby reducing heat transfer into the storage cavity. This reduces the amount of ice packs needed during cold chain transportation, thus helping to lower express delivery costs. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0022] Figure 1 This is an exploded view of the packaging box in the embodiments of this application;

[0023] Figure 2 This is a front view of the packaging box in an embodiment of this application;

[0024] Figure 3 for Figure 2 A cross-sectional view of the packaging box along the AA direction;

[0025] Figure 4 This is a schematic diagram of the box in the embodiments of this application from a first perspective;

[0026] Figure 5 This is a schematic diagram of the box in the embodiment of this application from a second perspective;

[0027] Figure 6 This is a schematic diagram of the top cover in an embodiment of this application;

[0028] Figure 7 This is a schematic diagram of the bottom cover in an embodiment of this application.

[0029] exist Figures 1-7 middle:

[0030] 100 - Packaging box;

[0031] 1-Top cover, 2-Second insulation structure, 3-Box body, 4-Bottom cover, 5-Insulation cavity;

[0032] 101-Second protrusion, 301-Bottom plate, 302-Side wall plate, 303-Storage cavity, 304-Insulation groove, 305-Limiting step, 401-First protrusion. Detailed Implementation

[0033] 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.

[0034] First, it should be noted that the insulated box in this application embodiment is suitable for scenarios requiring temperature preservation, such as cold chain transportation. For ease of understanding, the following detailed explanation will take the application of the insulated box in the cold chain transportation of food as an example.

[0035] like Figure 1 and Figure 2 As shown, the packaging box 100 in this embodiment includes a top cover 1, a second heat insulation structure 2, a box body 3, and a bottom cover 4. The top cover 1 and the bottom cover 4 are located on opposite sides of the box body 3 and are both connected to the box body 3. The second heat insulation structure 2 is located on the side of the top cover 1 facing the box body 3.

[0036] like Figure 3 As shown, the box 3 in this embodiment includes a side wall panel 302 and a bottom plate 301. Furthermore, the side wall panel 302 and the bottom plate 301 cooperate to form a storage cavity 303 with an opening.

[0037] The bottom plate 301 refers to the plate facing the support surface when the packaging box 100 is in its upright position; the upright position of the packaging box 100 refers to the state of the packaging box 100 when the opening of the storage cavity 303 is facing upwards. That is, the bottom plate 301 is the plate in the box body 3 that faces the opening of the storage cavity 303.

[0038] Side wall panel 302 refers to a plate that is connected to the base plate 301 and has a certain angle between it and the base plate 301. This angle can be adapted to the specific implementation as needed; for example, it can be 90°, 80°, and / or 100°. Furthermore, the connection between the side wall panel 302 and the base plate 301 can be that the side wall panel 302 and the base plate 301 are integrally formed, that is, the side wall panel 302 and the base plate 301 are a single piece; or the side wall panel 302 and the base plate 301 can be fixedly connected by adhesive or other means.

[0039] Continue as Figure 3 As shown, the bottom cover 4 is a cover structure set at the bottom of the box body 3. It is located on the side of the bottom plate 301 away from the storage cavity 303 and is connected to the side wall plate 302 of the box body 3.

[0040] In this configuration, when the packaging box 100 is placed upright, the bottom cover 4 is located at the very bottom of the packaging box 100. At this time, the bottom cover 4 is the part of the packaging box 100 that directly contacts the supporting surface. Based on this, if there are protrusions on the supporting surface, since the box body 3 is not in direct contact with the supporting surface, damage to the box body 3 can be effectively avoided. In other words, the bottom cover 4 in this embodiment can act as a protective structure for the box body 3, reducing the probability of damage to the box body 3.

[0041] In an optional embodiment, the bottom cover 4 is detachably connected to the box body 3. For example, the bottom cover 4 and the box body 3 can be detachably connected via a snap-fit ​​structure. This allows for direct replacement of the bottom cover 4 if it is damaged, ensuring the packaging box 100 can be used normally at a lower cost.

[0042] In an optional embodiment, the bottom cover 4 is fixedly connected to the box body 3. For example, the bottom cover 4 and the box body 3 can be fixedly connected by adhesive. This provides a high connection strength between the bottom cover 4 and the box body 3, effectively reducing the probability of separation between them during cold chain transportation.

[0043] Furthermore, there is a heat-insulating gap between the bottom cover 4 and the bottom plate 301. Specifically, continuing as follows... Figure 3 As shown, in the height direction of the packaging box 100, the distance between the bottom plate 301 and the bottom cover 4 is B, and B > 0 mm.

[0044] In this configuration, the gap between the bottom cover 4 and the bottom plate 301 effectively reduces heat transfer between the storage cavity 303 and the supporting structure (e.g., the ground), thereby reducing heat transfer into the storage cavity 303. This reduces the amount of ice packs needed during cold chain transportation, thus helping to lower express delivery costs.

[0045] It is understandable that a larger thermal insulation gap is more beneficial for reducing heat transfer between the storage cavity 303 and the supporting surface. However, an excessively large thermal insulation gap will affect the overall volume of the packaging box 100. Therefore, in some embodiments, the thermal insulation gap is set to be greater than 0 mm and less than 20 mm, i.e., 0 mm < B < 20 mm. This minimizes the impact of the thermal insulation gap on the overall volume of the packaging box 100 while ensuring that the thermal insulation gap meets the insulation requirements. In exemplary embodiments, the thermal insulation gap can be set to 5 mm, 6 mm, or 7 mm.

[0046] Furthermore, in some embodiments, the interior of the insulation gap can be filled with insulation material to further reduce heat transfer between the storage cavity 303 and the support surface.

[0047] In some embodiments, the side wall panel 302 and the bottom plate 301 are integrally formed. That is, the side wall panel 302 and the bottom plate 301 are a single piece. In this way, no connecting structure is required between the side wall panel 302 and the bottom plate 301, which can improve the overall structural strength of the box 3. On the other hand, since there is no need to assemble the side wall panel 302 and the bottom plate 301, the assembly cost can be reduced and the overall assembly efficiency of the packaging box 100 can be improved.

[0048] Furthermore, it is understandable that after a food cold chain transportation, the packaging box 100 needs to be cleaned and disinfected inside and out to prevent bacteria and dirt inside the packaging box 100 from affecting its subsequent reuse. In this example, the box body 3 is set as an integral structure, which can reduce the number of dirt spots in the packaging box 100, thereby facilitating the cleaning of the packaging box 100 after use.

[0049] In an exemplary embodiment, the side wall panel 302 and the bottom plate 301 can be integrally formed by injection molding.

[0050] Furthermore, in some embodiments, a first heat insulation structure is provided inside the side wall panel 302. This first heat insulation structure can reduce heat transfer between the storage cavity 303 and the external environment through the side wall panel 302, thereby further reducing heat transfer into the storage cavity 303 and improving the cold insulation effect of the packaging box 100.

[0051] In practical implementation, the first thermal insulation structure can be an air layer disposed inside the side wall panel 302. Alternatively, it can be a layer of thermal insulation material disposed inside the side wall panel 302. Based on this, such as Figure 3 As shown, in some embodiments, the first heat insulation structure is configured as a heat insulation cavity 5 that can be filled with heat insulation material, and the side wall plate 302 is provided with an opening communicating with the heat insulation cavity 5 at the position for connecting the bottom cover 4, so that the bottom cover 4 can close the heat insulation cavity 5.

[0052] In this configuration, when the packaging box 100 is used in scenarios requiring high insulation performance, the bottom cover 4 can be opened, and insulation material can be filled into the insulation cavity 5 through the opening. This further reduces the thermal conductivity of the side wall panel 302, allowing the packaging box 100 to maintain its insulation performance for a longer period. When the packaging box 100 is used in scenarios with lower insulation requirements, the insulation cavity 5 only needs to remain empty. In this case, since no insulation material is filled into the insulation cavity 5, the weight and cost of the packaging box 100 are relatively low. In other words, this embodiment, through the above configuration, allows the insulation capacity of the packaging box 100 to be adjusted as needed, thereby increasing the applicability of the packaging box 100.

[0053] Furthermore, in this configuration, the opening for connecting the heat insulation cavity 5 can serve as the ejection port for the mold to exit the heat insulation cavity 5 during the injection molding process, thereby enabling the heat insulation cavity 5 to be formed during the injection molding process. Since there is no need to set up an additional process for forming the heat insulation cavity 5, it is beneficial to simplify the molding process of the packaging box 100 and reduce the cost of the packaging box 100.

[0054] Furthermore, such as Figure 5 As shown, in some embodiments, the heat insulation cavity 5 is an annular groove formed on the side wall panel 302. The annular groove is formed at the end of the side wall panel 302 near the bottom plate 301 and surrounds the storage cavity 303. In this arrangement, the heat insulation cavity 5 is continuously arranged in the circumference of the storage cavity 303, which is more conducive to improving the heat preservation effect of the packaging box 100.

[0055] Of course, in some other embodiments, multiple heat insulation cavities 5 may be arranged at intervals and arranged around the storage cavity 303.

[0056] like Figure 3 As shown, the dimension of the heat insulation cavity 5 in the thickness direction of the side wall panel 302 is C; in specific implementations, the dimension of C can be adapted to meet the needs. However, it is necessary to ensure that the dimension of the heat insulation cavity 5 can meet the heat insulation requirements of the packaging box 100, and at the same time, the impact of the heat insulation cavity 5 on the overall dimension of the packaging box 100 should be minimized as much as possible. Based on this, in some embodiments, 0mm < C < 20mm; for example, it can be specifically set to 5mm, 6mm or 7mm.

[0057] Continue as Figure 3As shown, in the thickness direction of the side wall panel 302, the thicknesses of the two wall panels used to form the heat insulation cavity 5 are F and G, respectively. In specific implementations, the values ​​of F and G can be the same or different. This application does not impose specific limitations on this.

[0058] For example, F and G have the same value, and both are greater than 0 mm and less than 20 mm. For example, they can be specifically set to 9 mm, 10 mm, or 11 mm.

[0059] It should be understood that the above is merely an exemplary implementation of the first thermal insulation structure, but this application is not limited thereto. For example, in a specific implementation, the housing 3 can also use a hollow board as the side wall panel 302, utilizing the hollow structure inside the hollow board as the first thermal insulation structure. In this case, the thickness of the hollow board needs to be greater than 5mm and less than 7mm. The thickness of the thermal insulation material used in conjunction with the hollow board needs to be 7mm-10mm.

[0060] like Figure 3 and Figure 5 As shown, the surface of the bottom plate 301 away from the storage cavity 303 and the inner wall surface of the side wall plate 302 form a heat insulation groove 304; the bottom cover 4 is connected to the groove opening of the heat insulation groove 304 and can close the heat insulation groove 304.

[0061] In this configuration, the bottom plate 301, side wall plate 302, and bottom cover 4 can form a closed cavity. In this way, the heat preservation effect of the packaging box 100 can be further improved by filling the cavity with heat-insulating material.

[0062] like Figure 7 As shown, in some embodiments, the bottom cover 4 has a first protrusion 401 on the side facing the bottom plate 301, and the shape of the first protrusion 401 matches the shape of the groove opening of the heat insulation groove 304; thus, as Figure 3 As shown, after the bottom cover 4 is connected to the box body 3, the first protrusion 401 can extend into the heat insulation groove 304, and the circumferential side of the first protrusion 401 can be connected to the inner wall surface of the side wall panel 302.

[0063] In this configuration, on the one hand, the first protrusion 401 can serve as a positioning structure to improve the assembly accuracy between the bottom cover 4 and the housing 3. On the other hand, the first protrusion 401 can increase the connection area between the bottom cover 4 and the housing 3, thereby increasing the connection strength between the bottom cover 4 and the housing 3.

[0064] like Figure 3 As shown, the thickness of the bottom cover 4 is E. In specific implementations, the value of E can be adapted according to needs; this application does not specifically limit it. In some embodiments, 0mm < E < 20mm. For example, it can be specifically set to 9mm, 10mm, or 11mm.

[0065] like Figure 3 As shown, in this embodiment of the application, the top cover 1 is connected to the side wall panel 302 and is used to close the storage cavity 303. A second heat insulation structure 2 is provided on the side of the top cover 1 facing the storage cavity 303, that is, the top cover 1 and the storage cavity 303 are separated by the second heat insulation structure 2.

[0066] The second heat insulation structure 2 can further reduce the heat exchange between the external environment and the storage cavity 303, thereby further reducing the transfer of external heat to the storage cavity 303 through the top cover 1, and further improving the heat preservation effect of the packaging box 100.

[0067] like Figure 6 As shown, a second protrusion 101 is provided on the side of the top cover 1 facing the storage cavity 303, and the shape of the second protrusion 101 matches the opening shape of the storage cavity 303; in this way, as Figure 3 As shown, after the top cover 1 is connected to the box body 3, the second protrusion 101 can extend into the storage cavity 303, and the circumferential side of the second protrusion 101 can be connected to the inner wall surface of the side wall panel 302.

[0068] In this configuration, on the one hand, the second protrusion 101 can serve as a positioning structure to improve the connection accuracy between the top cover 1 and the housing 3. On the other hand, the second protrusion 101 can increase the connection area between the top cover 1 and the housing 3, thereby increasing the connection strength between the top cover 1 and the housing 3.

[0069] Continue as Figure 3 As shown, the top cover 1 has a dimension M in its thickness direction. In specific implementations, the value of M can be adapted to meet specific needs, and this application does not impose a specific limitation on it. For example, the value of M can be 19mm, 20mm, or 21mm, etc.

[0070] In the thickness direction of the top cover 1, the dimension of the second heat exchange structure is D; in specific implementations, the dimension of D can be adapted as needed, but it should be able to meet the heat insulation requirements. In some embodiments, the value of D ranges from 3mm to 5mm.

[0071] In some embodiments, the second heat insulation structure 2 can be connected to the top cover 1, so that the top cover 1 and the second heat insulation structure 2 are combined into a whole, which can improve the integrity of the packaging box 100 and make it easier to open or close the storage cavity 303.

[0072] In an exemplary embodiment, the second heat insulation structure 2 can be attached to the top cover 1 by hot melt adhesive.

[0073] In some embodiments, the second heat insulation structure 2 can be an aluminum foil bag vacuum sealing structure, and a protective film is provided on the side of the aluminum foil bag vacuum sealing structure away from the top cover 1. The protective film can be made of polyethylene terephthalate, so as to prevent the tray or ice pack in the storage cavity 303 from puncturing the aluminum foil bag, thereby ensuring the heat insulation effect of the aluminum foil bag vacuum sealing structure.

[0074] In practice, the protective film can be set to about 0.3mm.

[0075] like Figure 3 and Figure 4 As shown, in some embodiments, a limiting step 305 is provided at the end of the side wall panel 302 connected to the top cover 1, and the limiting surface of the limiting step 305 can abut against the surface of the second heat insulation structure 2 facing the storage cavity 303 to support and limit the second heat insulation structure 2. In this way, the second heat insulation structure 2 is clamped and fixed between the limiting step 305 and the top cover 1, thereby improving the stability of the second heat insulation structure 2.

[0076] In some embodiments, the box body 3, bottom cover 4 and / or top cover 1 of the packaging box 100 are made of foamed polypropylene material.

[0077] In a further preferred embodiment, the box body 3, bottom cover 4, and top cover 1 are all made of foamed polypropylene material, and the density of the box body 3, bottom cover 4, and top cover 1 is 35 kg / m³. 3 .

[0078] The basic principles of this application have been described above with reference to specific embodiments. However, it should be noted that the advantages, benefits, and effects mentioned in this application are merely examples and not limitations, and should not be considered as essential features of each embodiment of this application. Furthermore, the specific details disclosed above are for illustrative and facilitative purposes only, and are not limitations. These details do not limit the application to the necessity of employing the aforementioned specific details for implementation.

[0079] The block diagrams of devices, apparatuses, devices, and systems involved in this application are merely illustrative examples and are not intended to require or imply that they must be connected, arranged, or configured in the manner shown in the block diagrams. As those skilled in the art will recognize, these devices, apparatuses, devices, and systems can be connected, arranged, and configured in any manner. Words such as “comprising,” “including,” “having,” etc., are open-ended terms meaning “including but not limited to,” and are used interchangeably with them. The terms “or” and “and” as used herein refer to the terms “and / or,” and are used interchangeably with them unless the context clearly indicates otherwise. The term “such as” as used herein refers to the phrase “such as but not limited to,” and is used interchangeably with it.

[0080] It should also be noted that in the apparatus, equipment, and methods of this application, the components or steps can be disassembled and / or recombined. These disassemblies and / or recombinations should be considered as equivalent solutions of this application.

[0081] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use this application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other aspects without departing from the scope of this application. Therefore, this application is not intended to be limited to the aspects shown herein, but rather to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0082] It should be understood that the qualifiers “first,” “second,” “third,” “fourth,” “fifth,” and “sixth” used in the description of the embodiments of this application are only used to more clearly illustrate the technical solutions and are not intended to limit the scope of protection of this application.

[0083] The above description has been given for purposes of illustration and description. Furthermore, this description is not intended to limit the embodiments of this application to the forms disclosed herein. Although numerous exemplary aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations thereof.

Claims

1. A packaging box, characterized in that, include: The box has a storage cavity; the box includes a side wall panel and a bottom plate, the side wall panel and the bottom plate cooperate to form the storage cavity, and the storage cavity has an opening facing the bottom plate; The bottom cover is located on the side of the base plate away from the storage cavity and is connected to the side wall plate; and there is a heat insulation gap between the bottom cover and the base plate.

2. The packaging box according to claim 1, characterized in that, The side wall panel is integrally formed with the bottom plate; and / or the side wall panel is provided with a first heat insulation structure inside.

3. The packaging box according to claim 2, characterized in that, The first heat insulation structure is a heat insulation cavity that can be filled with heat insulation material. The side wall panel has an opening at the location where it connects to the bottom cover, which communicates with the heat insulation cavity, so that the bottom cover can close the heat insulation cavity.

4. The packaging box according to claim 3, characterized in that, The side wall panel has an annular groove at the end near the bottom plate, and the annular groove is arranged around the storage cavity to form the heat insulation cavity.

5. The packaging box according to claim 2, characterized in that, The surface of the bottom plate away from the storage cavity forms a heat insulation groove with the inner wall surface of the side wall plate. The bottom cover is connected to the opening of the heat insulation groove and can seal the heat insulation groove.

6. The packaging box according to claim 5, characterized in that, The bottom cover has a first protrusion on the side facing the bottom plate; the shape of the first protrusion matches the shape of the groove so that the first protrusion can extend into the heat insulation groove and connect with the inner wall surface of the side wall plate.

7. The packaging box according to any one of claims 1-6, characterized in that, include: The top cover is connected to the side wall panel and is used to seal the storage cavity; and a second heat insulation structure is provided on the side of the top cover facing the storage cavity.

8. The packaging box according to claim 7, characterized in that, The second heat insulation structure is an aluminum foil bag vacuum sealing structure, and a protective film is provided on the side of the aluminum foil bag vacuum sealing structure away from the top cover.

9. The packaging box according to claim 7, characterized in that, A limiting step is provided at one end of the side wall panel that connects to the top cover, and the limiting surface of the limiting step can abut against the surface of the second heat insulation structure facing the storage cavity, so as to support and limit the second heat insulation structure.

10. The packaging box according to claim 1, characterized in that, The packaging box includes a box body, a bottom cover, and a top cover; The housing, the bottom cover, and / or the top cover are made of foamed polypropylene material.

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