Multifunctional paper-plastic packaging box

Abstract

The application discloses a multifunctional paper-plastic packaging box which comprises a box body and a cover body. The box body is provided with a first opening on one side in a first direction. The cover body covers the first opening, and a containing space is formed between the cover body and the box body. The cover body is provided with a second opening which is communicated with the containing space and the outside of the multifunctional paper-plastic packaging box. The box body comprises an inner box body and an outer box body which is connected to the outer side of the inner box body. The cover body comprises an inner cover body and an outer cover body which is connected to the outer side of the inner cover body. A part of the inner box body protrudes from the outer box body in the first direction and is detachably inserted into the outer cover body; or a part of the inner cover body protrudes from the outer cover body in the first direction and is detachably inserted into the outer box body. The multifunctional paper-plastic packaging box can be used as a packaging box and a paper towel box. The box body and the cover body are connected through a double-layer structure, the connection mode is simpler, the connection stability is better, and the risk of deformation and damage of the box body and the cover body after multiple disassembly and assembly is reduced, so that the service life is prolonged.

Description

Technical Field

[0001] This application relates to the field of packaging boxes, and in particular to a multifunctional paper-plastic packaging box. Background Technology

[0002] With the social trend of advocating green environmental protection, energy conservation and emission reduction, the environmental performance and reusability of product packaging boxes are particularly important.

[0003] However, most existing product packaging boxes are for single use only. After the product is removed, the boxes are discarded, causing environmental pollution and waste. Some reusable packaging boxes have complex opening and closing structures, are more expensive, and are easily damaged. Utility Model Content

[0004] This application provides a multifunctional paper-plastic packaging box that enables the packaging box to be reused and reduces the risk of deformation and damage to the box body and lid after repeated disassembly and assembly, thereby extending its service life.

[0005] The multifunctional paper-plastic packaging box provided in this application includes a box body and a lid. The box body has a first opening on one side along a first direction. The lid closes to the first opening, forming an accommodating space between the lid and the box body. The lid has a second opening communicating with the accommodating space and the exterior of the multifunctional paper-plastic packaging box. The box body includes an inner box body and an outer box body connected to the outside of the inner box body. The lid includes an inner lid and an outer lid connected to the outside of the inner lid. A portion of the inner box body protrudes from the outer box body along a first direction and is detachably inserted into the outer lid; alternatively, a portion of the inner lid protrudes from the outer lid along a first direction and is detachably inserted into the outer box body.

[0006] In some embodiments, along a first direction, the outer peripheral surface of the outer housing is flush with the outer peripheral surface of the outer cover.

[0007] In some embodiments, the outer cover includes a first main body and a first protrusion, the first main body being connected to the outside of the inner cover, and the first protrusion protruding from the inner cover in a first direction; the inner box includes a second main body and a second protrusion, the outer box is connected to the outside of the second main body, the second protrusion protruding from the outer box in a first direction and being detachably inserted into the outer cover, and the first protrusion surrounding the outer periphery of the second protrusion.

[0008] In some embodiments, the outer casing and the first protrusion abut against each other along a first direction; and / or, the inner cover and the second protrusion abut against each other along a first direction.

[0009] In some embodiments, the inner cover includes an inner top wall, the outer cover includes an outer top wall, the inner top wall and the outer top wall are disposed opposite to the first opening along a first direction; the second opening penetrates the inner top wall and the outer top wall along the first direction.

[0010] In some embodiments, the outer top wall includes a wall body and an inclined portion, the inclined portion being annular, the inner periphery of the inclined portion surrounding the second opening, the outer periphery of the inclined portion being connected to the wall body, and the inclined portion extending obliquely from the inner periphery to the outer periphery.

[0011] In some embodiments, the second opening is rectangular, the length direction of the second opening is parallel to the second direction, and the second direction is perpendicular to the first direction; the inner box has a first inner circumferential surface, the first inner circumferential surface is arc-shaped, and the central axis of the first inner circumferential surface is parallel to the second direction.

[0012] In some embodiments, the inner box body has a recess that is recessed into the first inner circumferential surface and does not overlap with the bottom of the first inner circumferential surface, and the bottom surface of the recess is perpendicular to the first direction.

[0013] In some embodiments, the recess has a first side surface and a second side surface, the first side surface, the second side surface and the bottom surface are connected to each other, the first side surface is perpendicular to a second direction, the second side surface is perpendicular to a third direction, and the first direction, the second direction and the third direction are perpendicular to each other.

[0014] In some embodiments, the inner box body has two recesses, which are spaced apart along a third direction, and the first direction, the second direction and the third direction are perpendicular to each other.

[0015] The multifunctional paper-plastic packaging box provided in this application embodiment, by providing a second opening on the lid, can not only be used as a packaging box but also as a tissue box after the product is removed, realizing the reuse of the multifunctional paper-plastic packaging box and helping to reduce waste. Both the box body and the lid are made of paper, making it more environmentally friendly and helping to reduce environmental pollution. Both the box body and the lid are designed with an inner and outer double-layer structure, which allows for a nested connection. This results in a simpler appearance for the multifunctional paper-plastic packaging box, a simpler connection method, and better connection stability, reducing the risk of deformation and damage to the box body and lid after repeated disassembly and assembly, thereby extending the service life of the multifunctional paper-plastic packaging box. Attached Figure Description

[0016] The features, advantages, and technical effects of exemplary embodiments of this application will now be described with reference to the accompanying drawings.

[0017] Figure 1 This is a structural schematic diagram of a multifunctional paper-plastic packaging box provided in some embodiments of this application;

[0018] Figure 2 yes Figure 1 The diagram shows the exploded structure of the multifunctional paper-plastic packaging box after it is filled with paper.

[0019] Figure 3 yes Figure 1The diagram shows the structural structure of the multifunctional paper-plastic packaging box.

[0020] Figure 4 yes Figure 1 The diagram shows the structure of the lid of the multifunctional paper-plastic packaging box in one orientation.

[0021] Figure 5 yes Figure 1 The diagram shows the structure of the lid of the multifunctional paper-plastic packaging box from another angle.

[0022] Figure 6 yes Figure 3 A magnified structural diagram of region A in the middle.

[0023] The reference numerals in the accompanying drawings for the specific embodiments are as follows:

[0024] Multifunctional paper-plastic packaging box 1, paper package 2;

[0025] Box body 10, first opening 10a, inner box body 11, second main body 111, second protrusion 112, concave part 113, bottom surface 113a, first side surface 113b, second side surface 113c, first inner peripheral surface 11a, outer box body 12.

[0026] Cover 20, second opening 20a, inner cover 21, inner top wall 211, second inner peripheral surface 21a, outer cover 22, first main body 221, first protrusion 222, outer top wall 223, wall body 2231, inclined part 2232, inner peripheral edge 2232a, outer peripheral edge 2232b;

[0027] Capacity: 30;

[0028] First direction X, second direction Y, third direction Z. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this application, but not all embodiments.

[0030] The terms "first," "second," "third," etc., used in the specification, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy. In the embodiments of this application, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments.

[0031] In this application, the reference to "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0032] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0033] In the embodiments of this application, "parallel" includes not only the case of absolute parallelism, but also the case of approximate parallelism as commonly understood in engineering; similarly, "perpendicular" also includes not only the case of absolute perpendicularity, but also the case of approximate perpendicularity as commonly understood in engineering. For example, if the angle between two directions is 88°-95°, the two directions can be considered perpendicular; if the angle between two directions is 0°-10°, the two directions can be considered parallel.

[0034] This application provides a multifunctional paper-plastic packaging box. The multifunctional paper-plastic packaging box of this application embodiment is described below with reference to the accompanying drawings.

[0035] Reference Figures 1 to 6 The multifunctional paper-plastic packaging box 1 provided in this application embodiment includes a box body 10 and a lid 20. The box body 10 has a first opening 10a on one side along a first direction X. The lid 20 closes to the first opening 10a, defining an accommodating space 30 between the box body 10 and the lid 20. The lid 20 has a second opening 20a, which communicates with the accommodating space 30 and the outside of the multifunctional paper-plastic packaging box 1. The box body 10 includes an inner box body 11 and an outer box body 12 connected to the outside of the inner box body 11. The lid 20 includes an inner lid 21 and an outer lid 22 connected to the outside of the inner lid 21. A portion of the inner box body 11 protrudes from the outer box body 12 along the first direction X and is detachably inserted into the outer lid 22. Alternatively, a portion of the inner lid 21 protrudes from the outer lid 22 along the first direction X and is detachably inserted into the outer box body 12.

[0036] The first opening 10a can be the top opening of the box 10 in the first direction X, so as to facilitate the placement of packaged or stored items into the box 10.

[0037] Accordingly, the lid 20 has a bottom opening on one side along the first direction X. A portion of the receiving space 30 is located inside the box 10, and another portion of the receiving space 30 is located inside the lid 20.

[0038] The cover 20 includes a top wall and a peripheral wall. The top wall is disposed opposite to the first opening 10a along a first direction X, and the peripheral wall is connected to the top wall. There can be one peripheral wall, which is annular. The peripheral wall may also include multiple side walls connected in sequence.

[0039] In some examples, the second opening 20a is located on one side of the cover 20 along the first direction X, for example, the second opening 20a is located on the top wall. In other examples, the second opening 20a is located on the peripheral wall of the cover 20.

[0040] The second opening 20a is a strip-shaped opening to facilitate the removal of the tissue from the second opening 20a. Optionally, the second opening 20a extends along a second direction Y, which is perpendicular to the first direction X.

[0041] The outer side of the inner box 11 refers to the side of the inner box 11 that is away from the receiving space 30. The outer side of the inner cover 21 refers to the side of the inner cover 21 that is away from the receiving space 30.

[0042] The connection between the inner box 11 and the outer box 12 includes, but is not limited to, adhesive bonding. The connection between the inner cover 21 and the outer cover 22 includes, but is not limited to, adhesive bonding.

[0043] The inner box 11 and the outer box 12 can be made of the same or different materials. The inner cover 21 and the outer cover 22 can also be made of the same or different materials. Optionally, the inner box 11 and the outer box 12 can be made of different materials, with the inner box 11 having a lower hardness than the outer box 12. Similarly, the inner cover 21 and the outer cover 22 can be made of different materials, with the inner cover 21 having a lower hardness than the outer cover 22. The softer inner box 11 and inner cover 21 help reduce stress on the product and improve its protective effect. The harder outer box 12 and outer cover 22 help reduce the risk of deformation and compression of the inner box 11, inner cover 21, and the product.

[0044] Optionally, the inner box 11 and the inner lid 21 are made of the same material, and the outer box 12 and the outer lid 22 are made of the same material. The overall inner structure material of the multifunctional paper-plastic packaging box 1 is consistent, and the overall outer structure material is consistent, which helps to improve the overall texture of the multifunctional paper-plastic packaging box 1. (Paper material)

[0045] In some examples, along the first direction X, a portion of the inner box 11 protrudes from the outer box 12 towards the lid 20, and another portion of the inner box 11 is located inside the outer box 12. The portion of the inner box 11 protruding from the outer box 12 can be annular. In these examples, along the first direction X, a portion of the outer lid 22 protrudes from the inner lid 21 towards the lid 20. The portion of the outer lid 22 protruding from the inner lid 21 can be annular. The portion of the inner box 11 protruding from the outer box 12 is detachably inserted into the portion of the outer lid 22 protruding from the inner lid 21.

[0046] In other examples, along the first direction X, a portion of the inner cover 21 protrudes from the outer cover 22 towards the cover 20, and another portion of the inner cover 21 is located inside the outer cover 22. The portion of the inner cover 21 protruding from the outer cover 22 may be annular. In these examples, along the first direction X, a portion of the outer box 12 protrudes from the inner box 11 towards the cover 20. The portion of the outer box 12 protruding from the inner box 11 may be annular. The portion of the inner cover 21 protruding from the outer cover 22 is detachably inserted into the portion of the outer box 12 protruding from the inner box 11.

[0047] In this embodiment, a second opening 20a is provided on the cover 20, which can serve as a tissue outlet. After the product packaged inside the multifunctional paper-plastic packaging box 1 is removed, a paper package 2 can be placed into the receiving space 30, and the tissues inside the paper package 2 can be extracted through the second opening 20a. The multifunctional paper-plastic packaging box 1 can not only be used as a packaging box, but also as a tissue box after the product is removed, realizing the reuse of the multifunctional paper-plastic packaging box 1 and helping to reduce waste.

[0048] Both the box body 10 and the lid 20 are made of paper. Optionally, both the box body 10 and the lid 20 can be made of biodegradable environmentally friendly materials, such as sugarcane pulp, wood pulp, or recycled paper, through pulping, molding, and lamination processes. The multifunctional paper-plastic packaging box 1 is more environmentally friendly and helps reduce environmental pollution.

[0049] After the multifunctional paper-plastic packaging box 1 is used as a tissue box, the box body 10 and the lid 20 need to be disassembled and reassembled repeatedly to replace the paper pack. However, for paper-plastic packaging boxes, the box body 10 and the lid 20 are prone to wear or deformation. Therefore, the design of the connection structure between the box body 10 and the lid 20 is crucial.

[0050] In this embodiment, both the box body 10 and the lid 20 are designed as double-layered structures. A portion of the inner box body 11 protrudes from the outer box body 12 to facilitate insertion into the outer lid 22, or a portion of the inner lid 21 protrudes from the outer lid 22 to facilitate insertion into the outer box body 12. The box body 10 and lid 20 are connected via this double-layered structure, resulting in a simpler appearance for the multifunctional paper-plastic packaging box 1. The connection between the box body 10 and lid 20 is also simpler and more stable, reducing the risk of deformation and damage after repeated disassembly and assembly, thereby extending the service life of the multifunctional paper-plastic packaging box 1.

[0051] In some embodiments, along the first direction X, the outer peripheral surface of the outer box 12 is flush with the outer peripheral surface of the outer cover 22. The junction between the outer box 12 and the outer cover 22 does not form a stepped structure, which helps improve the appearance of the multifunctional paper-plastic packaging box 1 and enhances the user experience.

[0052] The outer peripheral surface of the outer box 12 refers to the outer peripheral surface of the side wall of the outer box 12. The outer peripheral surface of the outer cover 22 refers to the outer peripheral surface of the side wall of the outer cover 22.

[0053] In some embodiments, refer to Figure 3 and Figure 4 The outer cover 22 includes a first main body 221 and a first protrusion 222. The first main body 221 is connected to the outside of the inner cover 21, and the first protrusion 222 protrudes from the inner cover 21 along a first direction X. The inner box 11 includes a second main body 111 and a second protrusion 112. The outer box 12 is connected to the outside of the second main body 111, and the second protrusion 112 protrudes from the outer box 12 along a first direction X and is detachably inserted into the outer cover 22. The first protrusion 222 surrounds the outer periphery of the second protrusion 112.

[0054] Optionally, the inner surface of the first main body 221 is bonded to the outer surface of the inner cover 21. The inner surface of the outer box 12 is bonded to the outer surface of the second main body 111. This improves the connection stability between the first main body 221 and the inner cover 21, as well as the connection stability between the outer box 12 and the second main body 111.

[0055] Optionally, the first main body 221 and the first protrusion 222 are integrally formed. The second main body 111 and the second protrusion 112 are also integrally formed. This simplifies the manufacturing process and assembly of the multifunctional paper-plastic packaging box 1.

[0056] Optionally, the second protrusion 112 is a ring-shaped structure, which helps to increase the mating surface area between the outer cover 22 and the inner box 11 and improve the connection stability between the two.

[0057] The second protrusion 112 can be inserted into the outer cover 22 and can be removed from the outer cover 22 under external force for easy replacement of the paper package. The first protrusion 222 has a ring-shaped structure and can cover the second protrusion 112, which helps to improve the appearance.

[0058] In some embodiments, the outer box body 12 and the first protrusion 222 abut against each other along the first direction X. This reduces the gap between the outer box body 12 and the first protrusion 222, further improving the appearance of the multifunctional paper-plastic packaging box 1 and enhancing the user experience.

[0059] In some embodiments, the inner cover 21 and the second protrusion 112 abut against each other along the first direction X. This limits the distance the second protrusion 112 can be inserted into the outer cover 22, reducing the risk of damaging the box 10 and / or the cover 20 due to excessive force during insertion.

[0060] In some embodiments, refer to Figure 5 The inner cover 21 includes an inner top wall 211, and the outer cover 22 includes an outer top wall 223. The inner top wall 211 and the outer top wall 223 are disposed opposite to the first opening 10a along the first direction X. The second opening 20a penetrates the inner top wall 211 and the outer top wall 223 along the first direction X.

[0061] The top wall of the cover 20 includes an inner top wall 211 and an outer top wall 223.

[0062] The outer top wall 223 is one of the wall portions of the first main body portion 221, and the first main body portion 221 may also include a first peripheral wall connected to the outer top wall 223. The peripheral wall of the cover 20 includes a first peripheral wall and a first protrusion 222.

[0063] The second opening 20a penetrates the inner top wall 211 and the outer top wall 223. The second opening 20a is located on the side of the cover 20 away from the box body 10 along the first direction X, which is more in line with the user's usage habits and makes it easier for the user to pull out the tissue paper upward through the second opening 20a, thus improving the user's comfort.

[0064] In some embodiments, refer to Figure 5 The outer top wall 223 includes a wall body 2231 and an inclined portion 2232. The inclined portion 2232 is annular. The inner periphery 2232a of the inclined portion 2232 surrounds the second opening 20a. The outer periphery 2232b of the inclined portion 2232 is connected to the wall body 2231. The inclined portion 2232 extends obliquely from its own inner periphery 2232a to its own outer periphery 2232b.

[0065] Optionally, the wall body 2231 is annular and surrounds the outer periphery of the inclined portion 2232. The wall body 2231 connects the inclined portion 2232 and the peripheral wall of the outer cover 22.

[0066] The inclined portion 2232 allows for a certain height difference between the second opening 20a and the wall body 2231. Along the first direction X, the second opening 20a is closer to the box body 10 than the wall body 2231. The inclined portion 2232 can enclose a protective space outside the second opening 20a away from the receiving space 30. A portion of the product can be exposed to the outside of the multifunctional paper-plastic packaging box 1 through the second opening 20a. This protective space reduces the risk of damage to the exposed portion of the product from bumps, impacts, etc. Simultaneously, the inclined portion 2232 also enhances the aesthetic appearance of the multifunctional paper-plastic packaging box 1.

[0067] In some embodiments, refer to Figure 3 and Figure 4 The second opening 20a is rectangular, and its length direction is parallel to the second direction Y, which is perpendicular to the first direction X. The inner box 11 has a first inner circumferential surface 11a, which is arc-shaped, and its central axis is parallel to the second direction Y.

[0068] The first inner circumferential surface 11a can be the inner circumferential surface of the second main body 111.

[0069] Optionally, the inner cover 21 has a second inner circumferential surface 21a, which is arc-shaped. The first inner circumferential surface 11a and the second inner circumferential surface 21a enclose a cylindrical receiving space 30.

[0070] The inner box 11 has an arc-shaped first inner circumferential surface 11a. On the one hand, this is beneficial for matching products with arc-shaped outer surfaces (such as products that are cylindrical in shape), so as to improve the support and protection of the products. On the other hand, it is also beneficial for matching rolls of paper towels, so that the rolls of paper towels can rotate more smoothly within the receiving space 30, thereby improving the smoothness of paper towel collection and the user's experience.

[0071] The length direction of the second opening 20a is parallel to the central axis of the first inner circumferential surface 11a, which helps to increase the length of the second opening 20a so as to meet the needs of pulling out paper towels.

[0072] In some embodiments, refer to Figure 3 and Figure 6 The inner box 11 has a recess 113, which is recessed into the first inner circumferential surface 11a and does not overlap with the bottom of the first inner circumferential surface 11a. The bottom surface 113a of the recess 113 is perpendicular to the first direction X.

[0073] Optionally, in the second direction Y, the two ends of the recess 113 are flush with the two ends of the second opening 20a, or the two ends of the recess 113 extend beyond the two ends of the second opening 20a.

[0074] Optionally, the recess 113 is located on the bottom side of the first inner circumferential surface 11a along the third direction Z, with the first direction X, the second direction Y and the third direction Z being perpendicular to each other.

[0075] There can be one or more recesses 113.

[0076] The recess 113 does not overlap with the bottom of the first inner circumferential surface 11a, but the bottom of the first inner circumferential surface 11a can contact the product to improve the support and protection of the product.

[0077] The bottom surface 113a of the recess 113 is perpendicular to the first direction X, and the bottom surface 113a can be arranged opposite to the first opening 10a along the first direction X. The recess 113 can provide more space for square paper packages. The bottom surface 113a of the recess 113 can be used to support paper packages with flat bottoms. In this way, the multifunctional paper-plastic packaging box 1 can not only effectively support and protect cylindrical products, but also be used as a tissue box that can accommodate various types of tissues such as rolls and square paper packages, thus having a wide range of applications.

[0078] In some embodiments, refer to Figure 3 and Figure 6 The recess 113 has a first side surface 113b and a second side surface 113c, which are connected to the bottom surface 113a. The first side surface 113b is perpendicular to the second direction Y, and the second side surface 113c is perpendicular to the third direction Z. The first direction X, the second direction Y, and the third direction Z are all perpendicular to each other.

[0079] A portion of the square paper package can be accommodated in the recess 113. The bottom surface 113a, the first side surface 113b, and the second side surface 113c are perpendicular to each other, which helps to improve the adaptability of the recess 113 to the square paper package. The first side surface 113b can limit the paper package in the second direction Y, and the second side surface 113c can limit the paper package in the third direction Z, which helps to align the paper package with the second opening 20a, thereby facilitating the smooth extraction of tissues.

[0080] Optionally, there can be two first side surfaces 113b, which are arranged opposite each other along the second direction Y to further improve the limiting effect.

[0081] In some embodiments, the inner box 11 is provided with two recesses 113, which are spaced apart along the third direction Z, and the first direction X, the second direction Y and the third direction Z are perpendicular to each other.

[0082] The two recesses 113 are located on either side of the bottom of the first inner circumferential surface 11a in the third direction Z. Optionally, the two recesses 113 are symmetrically arranged along the third direction Z.

[0083] The second side surfaces 113c of the two recesses 113 are arranged opposite each other along the third direction Z. The second side surfaces 113c of the two recesses 113 can restrain the paper pack between them, which helps to improve the limiting effect and stability of the paper pack, facilitates the extraction of paper towels, and improves the user experience.

[0084] Although this application has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of this application. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A multifunctional paper-plastic packaging box, characterized in that, include: A box body, wherein the box body has a first opening on one side along a first direction; as well as A lid that covers the first opening, forming an accommodating space between the lid and the box body, and the lid having a second opening that connects the accommodating space to the outside of the multifunctional paper-plastic packaging box; The box body includes an inner box body and an outer box body connected to the outside of the inner box body, and the cover includes an inner cover and an outer cover connected to the outside of the inner cover. A portion of the inner box protrudes from the outer box along the first direction and is detachably inserted into the outer cover; or, a portion of the inner cover protrudes from the outer cover along the first direction and is detachably inserted into the outer box.

2. The multifunctional paper-plastic packaging box according to claim 1, characterized in that, Along the first direction, the outer peripheral surface of the outer box body is flush with the outer peripheral surface of the outer cover body.

3. The multifunctional paper-plastic packaging box according to claim 1 or 2, characterized in that, The outer cover includes a first main body and a first protrusion. The first main body is connected to the outside of the inner cover, and the first protrusion protrudes from the inner cover along the first direction. The inner box includes a second main body and a second protrusion. The outer box is connected to the outside of the second main body. The second protrusion protrudes from the outer box along the first direction and is detachably inserted into the outer cover. The first protrusion surrounds the outer periphery of the second protrusion.

4. The multifunctional paper-plastic packaging box according to claim 3, characterized in that, The outer casing and the first protrusion abut against each other along the first direction; and / or The inner cover and the second protrusion abut against each other along the first direction.

5. The multifunctional paper-plastic packaging box according to claim 3, characterized in that, The inner cover includes an inner top wall, and the outer cover includes an outer top wall. The inner top wall and the outer top wall are disposed opposite to the first opening along the first direction. The second opening extends through the inner top wall and the outer top wall along the first direction.

6. The multifunctional paper-plastic packaging box according to claim 5, characterized in that, The outer top wall includes a wall body and an inclined portion. The inclined portion is annular, with its inner periphery surrounding the second opening and its outer periphery connected to the wall body. The inclined portion extends obliquely from its inner periphery to its outer periphery.

7. The multifunctional paper-plastic packaging box according to claim 1, characterized in that, The second opening is rectangular, and the length direction of the second opening is parallel to the second direction, while the second direction is perpendicular to the first direction; The inner box has a first inner circumferential surface, which is arc-shaped, and the central axis of the first inner circumferential surface is parallel to the second direction.

8. The multifunctional paper-plastic packaging box according to claim 7, characterized in that, The inner box has a recessed portion, which is recessed into the first inner circumferential surface and does not overlap with the bottom of the first inner circumferential surface. The bottom surface of the recessed portion is perpendicular to the first direction.

9. The multifunctional paper-plastic packaging box according to claim 8, characterized in that, The recess has a first side and a second side, the first side, the second side and the bottom surface are connected to each other, the first side is perpendicular to the second direction, the second side is perpendicular to the third direction, and the first direction, the second direction and the third direction are perpendicular to each other.

10. The multifunctional paper-plastic packaging box according to claim 8, characterized in that, The inner box body has two recesses, which are spaced apart along a third direction. The first direction, the second direction, and the third direction are perpendicular to each other.

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