A high strength carton structure

Abstract

The application relates to the technical field of carton packaging, in particular to a high-strength carton structure which comprises a box body, the box body comprises a bottom support assembly, the bottom support assembly is composed of two first bottom plates and two second bottom plates, the flat part and the folded part of the first bottom plate abut the upper and lower surfaces of the second bottom plate respectively to form a three-layer superimposed support structure, the limiting abutment of the second bottom plate slot and the folded part can disperse the weight pressure and the transportation load, reduce deformation, when facing long-time transportation bumping and repeated impact of dynamic load, the rigid support of the three-layer superimposed support structure can effectively inhibit the interlayer separation and edge tearing risk of the bottom of the box body, delay the loosening deformation process of the box body, thereby long-effect guaranteeing the protection ability of the box body to the internal packaging.

Description

Technical Field

[0001] This application relates to the field of cardboard packaging technology, and in particular to a high-strength cardboard box structure. Background Technology

[0002] With the rapid development of modern logistics, e-commerce retail and industrial packaging industry, cardboard boxes, as a low-cost and easily recyclable core packaging carrier, play a key role in protecting goods from impact, compression and wear during transportation and warehousing.

[0003] In related technologies, cardboard is processed into a flat cardboard shape that fits the box size through a cutting process. Then, the sides, bottom plate and other structures of the cardboard are bent along a preset fold line by a folding operation. Finally, they are spliced ​​together to form a closed box with a storage space. Adhesive bonding is used to connect two adjacent pieces of cardboard.

[0004] However, since the support is formed by simply folding, when faced with heavy packaging, the bottom of the box needs to continuously bear the static pressure of the items. The folded seams and adhesive joints are prone to separation of cardboard layers and tearing at the edges due to stress concentration. If subjected to repeated dynamic loads such as long-term transportation and vehicle bumps, the bottom structure is prone to gradually loosening and deformation, resulting in a decrease in the box's ability to protect the contents. Utility Model Content

[0005] To address the aforementioned issues, this application provides a high-strength cardboard box structure.

[0006] The high-strength cardboard box structure provided in this application adopts the following technical solution: A high-strength cardboard box structure includes a box body. A bottom support assembly is provided at the bottom of the box body. The bottom support assembly includes a first bottom plate and a second bottom plate. Two first bottom plates and two second bottom plates are provided. The two first bottom plates are arranged opposite each other, and the two second bottom plates are arranged opposite each other. Each of the two first bottom plates includes a flat part and a folded part. The two folded parts abut against the upper surface of the two second bottom plates, and the two flat parts abut against the lower surface of the two second bottom plates, respectively.

[0007] By adopting the above technical solution, since the two folded parts abut against the upper surfaces of the two second base plates respectively, and the two straight parts abut against the lower surfaces of the two second base plates respectively, the second base plates, folded parts, and straight parts form a three-layer superimposed support structure. When bearing the static pressure of heavy objects, the load can be distributed and transferred through the synergistic force path of the three-layer superimposed support structure, reducing stress concentration at traditional single folded joints and weak bonding points. When facing long-term transportation bumps and repeated impacts from dynamic loads, the rigid support of the three-layer superimposed support structure can effectively suppress the risk of interlayer separation and edge tearing at the bottom of the box body, delay the loosening and deformation process of the box body, and thus provide long-term protection for the internal packaging of the box body.

[0008] Preferably, both second base plates are provided with slots, the length of which matches the width of the folding portion. The two second base plates are folded inward toward the inside of the box body, and the slots are connected. The first base plate is folded inward toward the inside of the box body, and the folding portion extends through the slot into the inside of the box body. The connection between the folding portion and the straight portion abuts against the groove wall of the slot.

[0009] By adopting the above technical solution, and by setting a slot on the second base plate that matches the width of the folding part, when the two second base plates are folded inwards into the box, the slots connect to form a connecting channel. The folding part of the first base plate passes through this channel and extends into the box. The connection between the folding part and the straight part is exactly abutted against the groove wall of the slot. This structure makes the bottom support of the box body no longer a simple layer stacking, but rather uses the slot to limit the folding part. The slot's limitation on the folding part can resist the layer slippage caused by bumps and suppress the tendency of tearing and loosening of the bottom of the box body, thereby continuously stabilizing the bottom support shape of the box body and thus ensuring the long-term protection of the box body for the internal packaged items.

[0010] Preferably, the housing body further includes a connecting plate and a surrounding plate. One end of the connecting plate is fixedly connected to the edge of the surrounding plate. The surrounding plate has a folded corner. The other end of the connecting plate is fixedly connected to the end of the surrounding plate away from the connecting plate. The folded corner is folded to form a rectangular frame. The rectangular frame is fixedly connected to the bottom support component.

[0011] By adopting the above technical solution, one end of the connecting plate is fixed to the edge of the surrounding plate, and the other end of the connecting plate is fixed to the end of the surrounding plate away from the connecting plate, forming a rectangular frame connected end to end. Then, the rectangular frame is fixedly connected to the bottom support component, which allows the surrounding plate and the bottom support component to form a stable whole. The fixed connection between the rectangular frame and the bottom support component can evenly transfer the pressure of heavy objects on the bottom of the box body and the impact load during transportation to the surrounding plate, reducing the pressure from being concentrated in a local area at the bottom of the box body. This can effectively reduce the loosening of the bottom of the box body due to excessive local stress, thereby ensuring the long-term protection of the box body for the internal packaged items.

[0012] Preferably, the connecting plate is fixedly connected to the end of the enclosure away from the connecting plate by adhesive bonding.

[0013] By adopting the above technical solution, the connecting plate is fixed to the end of the enclosure away from the connecting plate by adhesive bonding, which can form a tight and continuous connection force, ensuring that gaps or loosening are not likely to occur at the connection. This fixing method makes the rectangular frame more stable in forming. When the enclosure is subjected to external pressure or the bottom of the box body is subjected to heavy pressure, the connection will not separate due to excessive local force, and the overall shape of the rectangular frame can always be maintained.

[0014] Preferably, the box body further includes a cover plate and corner protectors. The corner protectors adopt a vertical folding structure and are located at the folding corner. The corner protectors abut against the inner wall of the enclosure. The cover plate is fixedly connected to the upper end of the enclosure. The upper end of the corner protector abuts against the cover plate, and the lower end of the corner protector abuts against the folding part.

[0015] By adopting the above technical solution, corner protectors with vertical folding structures are set at the four corners of the box body. The rigid structure formed by the folding can directly enhance the compression resistance of the weak parts at the corners. As the key position where the box body is prone to deformation under stress, the corner protectors abut against the inner wall of the surrounding panel to provide lateral support to the surrounding panel, reducing the inward deformation of the surrounding panel when subjected to lateral compression. At the same time, the upper end of the corner protector abuts against the cover plate, and the lower end of the corner protector abuts against the folding part. When the top of the box body is compressed or subjected to vertical impact during transportation, the pressure can be transmitted through the cover plate to the corner protector, and then from the corner protector to the bottom folding part, reducing the pressure concentration on only the cover plate or surrounding panel. This effectively reduces the deformation of the surrounding panel, corner collapse or cover plate damage caused by local pressure, and significantly improves the reinforcement and pressure resistance of the box body.

[0016] Preferably, the folding portion is further provided with a clearance opening, which is located on one side of the folding portion and the slot, and the clearance opening is located in the middle of the edge of the folding portion.

[0017] By adopting the above technical solution, the clearance opening in the middle of the edge of the folding part can provide the operator with a clear point of force application after the box body is used. Since the folding part passes through the slot during use, and the connection between the folding part and the straight part abuts against the slot wall to form a stable support, the edge of the folding part may be difficult to separate from the edge of the box body due to the tight fit under force. The clearance opening provides space for fingers or tools to exert force, allowing the operator to easily pull the folding part out of the slot with less effort to pry the edge, effectively simplifying the operation process when disassembling or recycling the box body.

[0018] Preferably, the box body is made of high-strength corrugated cardboard, and the first bottom plate, the second bottom plate, the surrounding plate, the cover plate and the connecting plate are integrally cut and formed structures.

[0019] By adopting the above technical solution, the main body of the box is made of high-strength corrugated cardboard. High-strength corrugated cardboard has stronger bending and tear resistance, which can provide a solid foundation support for the main body of the box and reduce the risk of deformation when bearing heavy objects or being subjected to external impact. The first bottom plate, the second bottom plate, the surrounding panels and the connecting plates are cut and formed as one piece, so that there are no splicing gaps between the components, the structural integrity is stronger, and the load can be evenly transferred through the one-piece cutting and forming when under stress, reducing the stress concentration problem that is prone to occur at the joints in traditional split splicing structures, and further enhancing the overall resistance to deformation.

[0020] Preferably, the edges of the box body are rounded.

[0021] By adopting the above technical solution, the edges of the box body are rounded, which can effectively eliminate sharp corners. When operators handle and stack the box, it can reduce the risk of hand or body cuts from sharp corners and improve safety during use. At the same time, the rounded corners can reduce direct friction between the edges of the box body and other objects. During transportation or stacking, the rounded corners can reduce local friction through the arc transition, reduce scratches and damage to the box body, and indirectly enhance the durability of the box body structure.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. The contact between the folded part and the upper surface of the second base plate, and the contact between the straight part and the lower surface of the second base plate, forms a three-layer superimposed support in the vertical direction, which effectively avoids the stress concentration risk of traditional single folding seams or adhesive parts. Through the synergistic force sharing between the rigid support layers, this structure significantly improves the adaptability of the box body to complex working conditions such as long-term transportation bumps and stacking compression. It can effectively suppress the risk of interlayer separation and edge tearing at the bottom of the box body, delay the loosening and deformation process of the box body, and thus ensure the long-term protection capability of the box body for the internal packaging. 2. The second base plate is equipped with a slot that matches the width of the folding section. When the two second base plates are folded into the box, the slots connect to form a connecting channel. The folding section of the first base plate passes through this channel and extends into the box. The connection between the folding section and the straight section is exactly abutted against the slot wall. This structure makes the bottom support of the box body no longer a simple layer stacking, but uses the slot to limit the folding section. The slot's limitation on the folding section can resist the layer slippage caused by bumps and suppress the tendency of tearing and loosening of the bottom of the box body. This continuously stabilizes the bottom support shape of the box body, thus ensuring the long-term protection of the box body for the internal packaged items. 3. The four corners of the container body are equipped with vertically folding corner protectors. The folding structure of the corner protectors enhances the compression resistance at the corners. The corner protectors abut against the inner wall of the surrounding panel to provide lateral support to the panel, reducing inward deformation when the panel is subjected to lateral compression. At the same time, the upper end of the corner protector abuts against the cover plate, and the lower end of the corner protector abuts against the folding part. When the top of the container is compressed or subjected to vertical impact during transportation, the pressure can be transmitted through the cover plate to the corner protector, and then from the corner protector to the bottom folding part. This reduces the pressure concentration on the cover plate or surrounding panel, effectively reducing panel deformation, corner collapse, or cover plate damage caused by localized pressure, and significantly improving the reinforcement and compression resistance of the container body. Attached Figure Description

[0023] Figure 1 This is a structural schematic diagram of an embodiment of this application.

[0024] Figure 2 This is a structural schematic diagram of an embodiment of this application.

[0025] Figure 3 This is a schematic diagram of the second base plate folding.

[0026] Figure 4 This is a cross-sectional view of an embodiment of this application.

[0027] Figure 5 yes Figure 4 An enlarged diagram of A in the diagram.

[0028] Figure 6 This is a folding diagram of an embodiment of this application.

[0029] Figure 7 This is a schematic diagram of the bottom folding in an embodiment of this application.

[0030] Figure 8 This is a schematic diagram of the internal structure of the corner protectors inserted into the main body of the box.

[0031] Figure 9 This is a diagram showing the folding of the cover plate.

[0032] Explanation of reference numerals in the attached drawings: 1. Box body; 11. Bottom support assembly; 111. First bottom plate; 1111. Straight section; 1112. Folding section; a1. Clearance opening; 112. Second bottom plate; 1121. Slot; 12. Connecting plate; 13. Enclosure; 131. Corner; 14. Cover plate; 15. Corner protector; 16. Rounded corner. Detailed Implementation

[0033] The following is in conjunction with the appendix Figure 1-9 This application will be described in further detail.

[0034] This application discloses a high-strength cardboard box structure. (Refer to...) Figure 1 and Figure 2 A high-strength cardboard box structure includes a box body 1, and the box body 1 includes a bottom support component 11. The bottom support component 11 is fixedly connected to the box body 1. The bottom support component 11 can enhance the support capacity of the bottom of the box body 1, effectively reduce the deformation and damage of the bottom structure of the box body 1 under the pressure of heavy objects and dynamic loads, and improve the protection capability of the box body 1 for the internal packaged items.

[0035] Specifically, the bottom support component 11 includes a first base plate 111 and a second base plate 112. There are two first base plates 111 and two base plates 112. The two first base plates 111 are arranged opposite each other, and the two second base plates 112 are arranged opposite each other. The first base plate 111 and the second base plate 112 are adjacent and fixedly connected.

[0036] Furthermore, the first base plate 111 includes a straight portion 1111 and a folded portion 1112. The straight portion 1111 and the folded portion 1112 are fixedly connected. The folded portion 1112 is a portion that extends from the first base plate 111 and can be folded. The straight portion 1111 and the folded portion 1112 are also rectangular in shape. The two folded portions 1112 abut against the upper surfaces of the two second base plates 112 respectively, and the two straight portions 1111 abut against the lower surfaces of the two second base plates 112 respectively.

[0037] This demonstrates that this contact method involves a three-layer superimposed support structure formed by the second bottom plate 112, the folded portion 1112, and the straight portion 1111. When bearing the static pressure of heavy objects, the load can be distributed and transferred through the synergistic force path of the three-layer superimposed support structure, reducing stress concentration at traditional single folding seams and weak bonding points. When facing long-term transportation bumps and repeated impacts from dynamic loads, the rigid support of the three-layer superimposed support structure can effectively suppress the risk of interlayer separation and edge tearing at the bottom of the box body 1, and delay the loosening and deformation process of the box body 1, thereby ensuring the long-term protection capability of the box body 1 for the internal packaging. For example, when heavy objects are placed inside the carton, the folded portion 1112, the straight portion 1111, and the second bottom plate 112 jointly bear the pressure, dispersing the stress and reducing the damage to the bottom of the box caused by stress concentration.

[0038] Reference Figure 3 , Figure 4 as well as Figure 5 Furthermore, both second base plates 112 are provided with slots 1121. The slots 1121 are rectangular grooves opened on the second base plates 112. The length of the slots 1121 matches the width of the folding parts 1112. When the two second base plates 112 are folded into the box body 1, the slots 1121 are connected. Furthermore, the first base plate 111 is folded into the box body 1. The width of the slots 1121 matches the width of the two folding parts 1112 stacked together. The folding parts 1112 pass through the slots 1121 and extend into the box body 1. The connection between the folding parts 1112 and the straight parts 1111 abuts against the groove wall of the slots 1121. At the same time, the folding parts 1112 are folded to the left and right ends. The folding parts 1112 abut against the upper surface of the second base plates 112.

[0039] To further explain, this structure means that the bottom support of the box body 1 is no longer a simple layering, but rather uses the slot 1121 to limit the folding part 1112. The slot 1121's limitation of the folding part 1112 can resist interlayer slippage caused by bumps and suppress the tendency of tearing and structural loosening at the bottom of the box body 1, thereby continuously stabilizing the bottom support shape of the box body 1 and ensuring the long-term protection capability of the box body 1 for the internal packaged items. For example, under the pressure of heavy objects, the contact between the folding part 1112 and the groove wall of the slot 1121 can reduce the slippage of the folding part 1112, ensuring the reliability of the bottom support structure.

[0040] Reference Figure 6 and Figure 7Meanwhile, the main body 1 of the box also includes a connecting plate 12 and a surrounding plate 13. The connecting plate 12 is long and narrow. One end of the connecting plate 12 is fixedly connected to the edge of the surrounding plate 13, and the other end of the connecting plate 12 is fixedly connected to the end of the surrounding plate 13 away from the connecting plate 12. The other end of the connecting plate 12 is fixedly connected to the end of the surrounding plate 13 away from the connecting plate 12 by adhesive bonding. The surrounding plate 13 is provided with a corner 131. The connecting plate 12 and the surrounding plate 13 are connected end to end and the corner 131 is folded to form a rectangular frame. The rectangular frame is fixedly connected to the bottom support component 11.

[0041] This demonstrates that the fixed connection between the rectangular frame and the bottom support component 11 can evenly transfer the pressure of the heavy objects borne by the bottom of the box body 1 and the impact load during transportation to the enclosure 13, reducing the pressure from being concentrated only in a local area at the bottom of the box body 1. This can effectively reduce the loosening of the bottom of the box body 1 due to excessive local stress, thus ensuring the long-term protection of the box body 1 for the internal packaging. For example, even if the box is subjected to bumps and collisions during transportation, this structure can ensure that the box is not easily deformed.

[0042] Reference Figure 8 Furthermore, the main body 1 of the box also includes a cover plate 14 and corner protectors 15. The corner protectors 15 adopt a vertical folding structure and are L-shaped. The corner protectors 15 are located at the folding corner 131 and abut against the inner wall of the surrounding plate 13. In this embodiment, four cover plates 14 are provided. The cover plates 14 are fixedly connected to the four sides of the rectangular frame. The upper end of the corner protector 15 abuts against the cover plate 14, and the lower end of the corner protector 15 abuts against the folding part 1112.

[0043] Reference Figure 9 This illustrates that when the box is filled with goods, the four cover plates 14 are fixedly connected to the four sides of the rectangular frame and cover the top opening. This not only seals the box and reduces the risk of goods falling, but also ensures that the upper end of the corner protector 15 abuts against the cover plate 14 and the lower end of the corner protector 15 abuts against the folding part 1112. If the top pressure caused by stacking is applied after the cover plate 14 is closed, the pressure can be transmitted through the cover plate 14 to the corner protector 15, and then from the corner protector 15 to the bottom folding part 1112. This reduces the pressure from being concentrated only at the edge of the cover plate 14, which could cause deformation of the box body 1. Combined with the support of the bottom support component 11, this makes the sealing and overall compression resistance of the box more reliable when it is filled with goods.

[0044] In addition, the folding part 1112 is also provided with a clearance opening a1. The clearance opening a1 is located on the side of the folding part 1112 away from the connection between the folding part 1112 and the straight part 1111, and is located in the middle of the edge of the folding part 1112. The clearance opening a1 is a semi-circular notch opened on the folding part 1112. Its function is to provide the operator with a clear point of force application after the box body 1 has been used. Since the folding part 1112 passes through the slot 1121 during use, and the connection between the folding part 1112 and the straight part 1111 abuts against the slot wall to form a stable support, the edge of the folding part 1112 may be difficult to separate from the edge of the box body due to the tight fit under force. The clearance opening a1 provides space for the fingers or tools to exert force, allowing the operator to easily pull the folding part 1112 out of the slot 1121 with less effort to pry the edge, effectively simplifying the operation process when disassembling or recycling the box body 1.

[0045] Meanwhile, the main body 1 of the box is made of high-strength corrugated cardboard, and the first bottom plate 111, the second bottom plate 112, the side plate 13, the cover plate 14 and the connecting plate 12 are integrally cut and formed. This integral cutting and forming method eliminates the splicing gaps between the components, resulting in stronger structural integrity. When under stress, the load can be evenly transferred through the integral cutting and forming, reducing the stress concentration problem that is prone to occur at the joints in traditional split splicing structures, and further enhancing the overall resistance to deformation.

[0046] It should be noted that the other end of the connecting plate 12 is fixedly connected to the end of the enclosure 13 away from the connecting plate 12 by EVA hot melt adhesive. The connecting plate 12 and the enclosure 13 are made of high-strength corrugated cardboard. EVA hot melt adhesive has strong adhesion to paper materials and can form high shear strength after curing. It can withstand the structural stress after the rectangular frame is assembled, reducing cracking or falling off at the bonding joint due to stress. At the same time, EVA hot melt adhesive cures quickly, which is suitable for efficient operation when assembling the box body 1 in batches. In addition, EVA hot melt is non-corrosive to paper materials and can be adapted to the material characteristics of the box body 1, meeting the requirements of structural reinforcement and assembly stability.

[0047] In addition, the edges of the box body 1 are rounded 16. The rounded edges of the box body 1 can effectively eliminate sharp corners, reducing the risk of hand or body cuts when operators handle or stack the box, thus improving safety during use. At the same time, the rounded corners 16 can reduce direct friction between the edges of the box body 1 and other objects. During transportation or stacking, the rounded corners 16 can reduce local friction through the arc transition, reducing scratches and damage to the box body 1, and indirectly enhancing the durability of the box body 1 structure.

[0048] The implementation principle of a high-strength cardboard box structure in this application embodiment is as follows: The bottom support assembly consists of two opposing first base plates and two opposing second base plates. The flat part and the folded part of the first base plate abut against the lower surface and upper surface of the second base plate, respectively, forming a three-layer superimposed support structure. This structure can disperse the static pressure of heavy objects and the dynamic load during transportation, reducing tearing or loosening caused by stress concentration. At the same time, through slot limiting and abutment force transmission, it further suppresses the interlayer slippage of the folded part, increases the structural strength of the bottom support assembly, and stabilizes the bottom support.

[0049] The connecting plate and the surrounding plate are bonded together with EVA hot melt adhesive to form a rectangular frame. After being fixed with the bottom support components, the force is evenly transmitted, reducing excessive local stress. The corner guards at the four corners are folded vertically, and the top and bottom respectively abut against the cover plate and the folded part. Together with the cover plate's sealing function, they enhance the pressure resistance of the top of the box body and the overall compression resistance.

[0050] The first base plate, second base plate, side panels, cover plate, and connecting plate are cut and formed as a single piece, which improves the structural integrity and strength. The folding opening facilitates disassembly of the box body after use. EVA hot melt adhesive is compatible with paper materials, which can ensure the connection strength between the connecting plate and the side panels and the assembly efficiency. The rounded corners of the box body can reduce scratches and damage during handling. In addition, the box body uses high-strength corrugated cardboard as the base material, which can further enhance the overall resistance to deformation.

[0051] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A high strength carton structure, characterized by, The box body (1) includes a box body (1) and a bottom support assembly (11) is provided at the bottom of the box body (1). The bottom support assembly (11) includes a first bottom plate (111) and a second bottom plate (112). There are two first bottom plates (111) and two second bottom plates (112). The two first bottom plates (111) are arranged opposite each other, and the two second bottom plates (112) are arranged opposite each other. The two first bottom plates (111) include a straight part (1111) and a folding part (1112). The two folding parts (1112) abut against the upper surface of the two second bottom plates (112) respectively, and the two straight parts (1111) abut against the lower surface of the two second bottom plates (112) respectively.

2. A high strength carton structure according to claim 1 wherein, Both second base plates (112) are provided with slots (1121), the length of the slots (1121) matches the width of the folding part (1112), the two second base plates (112) are folded inward toward the inside of the box body (1), the slots (1121) are connected, the first base plate (111) is folded inward toward the inside of the box body (1), the folding part (1112) passes through the slots (1121) and extends into the inside of the box body (1), the connection between the folding part (1112) and the straight part (1111) abuts against the groove wall of the slot (1121).

3. A high strength carton structure according to claim 1 wherein, The box body (1) also includes a connecting plate (12) and a surrounding plate (13). One end of the connecting plate (12) is fixedly connected to the edge of the surrounding plate (13). The surrounding plate (13) is provided with a corner (131). The other end of the connecting plate (12) is fixedly connected to the end of the surrounding plate (13) away from the connecting plate (12). The corner (131) is folded to form a rectangular frame. The rectangular frame is fixedly connected to the bottom support component (11).

4. A high strength carton structure according to claim 3 wherein, The connecting plate (12) is fixedly connected to the end of the enclosure plate (13) away from the connecting plate (12) by adhesive bonding.

5. A high strength carton structure according to claim 3 wherein, The main body (1) of the box also includes a cover plate (14) and corner protectors (15). The corner protectors (15) adopt a vertical folding structure. The corner protectors (15) are set at the folding corner (131). The corner protectors (15) abut against the inner wall of the surrounding plate (13). The cover plate (14) is fixedly connected to the upper end of the surrounding plate (13). The upper end of the corner protectors (15) abuts against the cover plate (14). The lower end of the corner protectors (15) abuts against the folding part (1112).

6. A high strength carton structure according to claim 2 wherein, The folding part (1112) is also provided with a clearance opening (a1), which is located on one side of the folding part (1112) and the slot (1121), and the clearance opening (a1) is located in the middle of the edge of the folding part (1112).

7. A high strength carton structure according to claim 5 wherein, The box body (1) is made of high-strength corrugated cardboard, and the first bottom plate (111), the second bottom plate (112), the surrounding plate (13), the cover plate (14) and the connecting plate (12) are integrally cut and formed structures.

8. A high strength carton structure according to claim 1 wherein, The edges of the box body (1) are provided with rounded corners (16).

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