A high-strength packaging carton

Abstract

This utility model relates to a high-strength packaging carton in the field of cardboard boxes. It includes an outer shell, with a lid and a bottom plate respectively added to the upper and lower parts of the outer shell. The outer shell, lid, and bottom plate constitute the box body. The box body is made of multi-layer high-strength corrugated cardboard. Nylon fasteners are connected to the lid and outer shell at corresponding locations. The Nylon fasteners consist of a first rough surface and a first hook surface, which are respectively connected to the outer shell and the lid. The outer surface of the outer shell is coated with a waterproof and moisture-proof coating. The outer shell includes a composite reinforcement layer comprising a glass fiber reinforced mesh and a polyester film. The glass fiber reinforced mesh is disposed on the inner wall of the outer shell, and the polyester film is disposed on the outer side of the outer shell. A three-dimensional reinforcing frame is added to all four sides of the inner wall of the outer shell. The three-dimensional reinforcing frame is an overall "well"-shaped honeycomb paper core. The three-dimensional reinforcing frame is bonded to the inner wall of the outer shell using hot melt adhesive.

Description

Technical Field

[0001] This utility model relates to the field of cardboard boxes, specifically to a high-strength packaging cardboard box. Background Technology

[0002] Packaging cartons are used in packaging scenarios during the transportation and storage of goods, especially for goods that need to withstand a certain load during transportation and stacking, or may come into contact with humid environments or sharp objects. They are particularly suitable for the transportation packaging needs of high-value goods with high requirements for packaging protection performance.

[0003] Existing logistics cartons in this field generally use corrugated cardboard with insufficient strength in their basic structure, failing to provide stable foundation support. This makes the cartons prone to deformation due to defects in the base material. Furthermore, most cartons lack a stable support system that works in conjunction with the outer shell to form a three-dimensional load-bearing network, making it difficult to effectively distribute external pressure during use. This results in weak overall compression resistance and load-bearing capacity, making them prone to deformation and breakage when carrying heavy loads or experiencing compression. Additionally, existing logistics cartons have poor tear and puncture resistance, making them susceptible to damage from sharp objects during transportation, thus affecting the safety of the contents. Moreover, most cartons lack effective waterproofing and moisture-proofing measures on their outer shells, allowing external moisture and humidity to easily penetrate the interior. This leads to a decrease in structural strength after the cartons become damp, making it difficult to maintain good performance in humid environments. Utility Model Content

[0004] The purpose of this utility model is to solve the above defects and provide a high-strength packaging carton. It uses multi-layer high-strength corrugated cardboard to avoid deformation of the carton due to insufficient base material. It solves the technical problem that the corrugated cardboard used in the prior art is generally not strong enough and cannot provide stable base support for the carton, and the carton is easily deformed due to defects in the base material.

[0005] The objective of this utility model is achieved through the following means:

[0006] A high-strength packaging carton includes an outer shell, with a lid and a bottom plate respectively added to the upper and lower parts of the outer shell. The outer shell, lid, and bottom plate constitute the carton body, which is made of multi-layer high-strength corrugated cardboard. The lid and the corresponding part of the outer shell are connected by Velcro fasteners, which consist of a first rough surface and a first hook surface. The first rough surface and the first hook surface are respectively connected to the outer shell and the lid. The outer surface of the outer shell is coated with a waterproof and moisture-proof coating. The outer shell includes a composite reinforcement layer, which includes a glass fiber reinforced mesh and a polyester film. The glass fiber reinforced mesh is disposed on the inner wall of the outer shell, and the polyester film is disposed on the outer side of the outer shell. A three-dimensional reinforcing frame is added to all four sides of the inner wall of the outer shell. The three-dimensional reinforcing frame is a honeycomb paper core in the shape of a "well". The three-dimensional reinforcing frame is bonded to the inner wall of the outer shell by hot melt adhesive.

[0007] Multi-layer high-strength corrugated cardboard is used, which is processed into an outer shell, a lid, and a bottom plate. The bottom plate is fixedly connected to the lower part of the outer shell to form the basic load-bearing frame of the carton.

[0008] The first rough side of the nylon fastener is fixedly connected to the preset position on the upper part of the outer shell, and the first hook side of the nylon fastener is fixedly connected to the corresponding position on the lid, so as to ensure that the first rough side and the first hook side can fit precisely when the lid is closed.

[0009] A glass fiber reinforced mesh is laid completely on the inner wall of the shell, and a polyester film is laid completely on the outer side of the shell, so that the glass fiber reinforced mesh and the polyester film work together to form a composite reinforcement layer of the shell, thereby strengthening the inner and outer sides of the shell.

[0010] The three-dimensional reinforcing frame, which is shaped like a "well" honeycomb paper core, is placed around the inner wall of the outer shell. Hot melt adhesive is evenly applied to the contact surface between the three-dimensional reinforcing frame and the inner wall of the outer shell. After the hot melt adhesive has cured, the three-dimensional reinforcing frame and the inner wall of the outer shell are firmly bonded together.

[0011] A waterproof and moisture-proof coating is evenly applied to the outer surface of the outer casing along its entire surface; after the coating has cured naturally, the entire preparation process of the high-strength packaging carton is completed.

[0012] When items need to be stored, separate the first hook side of the box lid from the first rough side of the outer shell, open the box lid and put the items into the box; after the items are placed, close the box lid so that the first hook side and the first rough side fit tightly together, and use Velcro to fix the box lid to the outer shell to prevent items from falling out of the box during transportation.

[0013] Furthermore, the three-dimensional reinforcing frame includes support columns and connecting columns, and the inner cavities of the support columns and connecting columns are all honeycomb-shaped.

[0014] The honeycomb design of the inner cavities of the support columns and connecting columns significantly reduces their weight while maintaining structural strength, thereby lowering the overall weight of the reinforced frame and reducing the load on the shell. Furthermore, the honeycomb structure provides excellent force transmission characteristics. When the shell is subjected to external impact, the support columns and connecting columns can evenly distribute the force across the entire reinforced frame through the honeycomb cavities, preventing localized stress concentration and effectively enhancing the reinforced frame's support and protection capabilities for the shell, thus extending the shell's service life. Simultaneously, the honeycomb structure's inner cavities also act as a buffer and shock absorber, reducing the impact of external vibrations on the internal components of the shell.

[0015] Furthermore, the support columns are located at the four corners of the inner cavity of the outer shell, and the two sides of the connecting column are respectively connected to the upper and lower parts of the surface of the adjacent support column.

[0016] Positioning the support columns at the four corners of the outer shell cavity leverages the stability of these corner positions, allowing the support columns to distribute the forces transmitted from all sides of the shell more evenly and preventing deformation due to excessive localized stress. Connecting columns link the upper and lower parts of adjacent support columns, creating two horizontal support planes within the shell cavity. This further enhances the connection stability between the support columns and prevents them from tilting or shifting under load. This double-layered structural design allows the three-dimensional reinforced frame to form a more comprehensive support system within the shell cavity, significantly improving the overall structural rigidity and deformation resistance of the shell, and effectively resisting lateral and vertical impacts during handling or use.

[0017] Furthermore, the surface of the support column is provided with a guide groove, and the inner cavity of the guide groove is slidably connected with a guide block. The guide block is connected to both sides of the corresponding connecting column, and the cross-section of the inner cavity of the guide groove and the guide block as a whole are T-shaped designs.

[0018] The T-shaped structure design of the guide groove and guide block effectively prevents the guide block from detaching from the inner cavity of the guide groove during sliding, ensuring the reliability of the connection between the support column and the connecting column. The sliding connection method makes the assembly and disassembly of the support column and connecting column more convenient. When maintenance or component replacement of the three-dimensional reinforced frame is required, simply slide the guide block along the guide groove to separate the support column and connecting column, eliminating the need for complex tools and reducing the difficulty of maintenance operations. Simultaneously, the guide groove provides precise guidance for the sliding of the guide block, ensuring that the connecting column is accurately installed in the preset position, improving the assembly accuracy of the three-dimensional reinforced frame and preventing the support effect of the frame from being affected by connection position deviations.

[0019] Furthermore, storage side grooves are provided at the lower center of both sides of the outer shell, and corrugated cardboard wings are added to the inner cavity of the storage side grooves. The upper part of the corrugated cardboard wings is rotatably connected to the upper part of the inner cavity of the storage side grooves.

[0020] The storage side slots provide dedicated storage space for the corrugated cardboard wings, preventing them from protruding when not in use, reducing the overall space occupied by the casing, and facilitating storage and handling. The corrugated cardboard wings use a rotating connection, making operation simple and convenient. Users can quickly unfold and fold the corrugated cardboard wings according to their actual needs. At the same time, corrugated cardboard is lightweight, low-cost, and has a certain structural strength. After unfolding the corrugated cardboard wings, it increases the contact area between the bottom of the casing and the placement surface, improving the stability of the casing when placed and preventing it from tipping over due to uneven placement or slight impacts.

[0021] Furthermore, a second rough surface and a second hook surface are respectively added to the outer surface of the corrugated cardboard wings on both sides of the outer shell, and the second rough surface and the second hook surface are bonded together.

[0022] When the corrugated cardboard wing is folded, it flips downwards to fit against the outer side wall of the outer shell. The precise alignment and bonding of the second hook surface and the second rough surface form a strong connection structure between the corrugated cardboard wing and the outer shell side wall. This effectively prevents the corrugated cardboard wing from loosening or warping due to vibration or collision during transportation or storage, ensuring the stability of the component during storage and reducing frictional wear between structures. Simultaneously, the second hook surface is designed with the hook facing upwards, directly avoiding the hook surface scratching the inner wall of the outer shell or other structures during folding, protecting the appearance and structural integrity of the outer shell and the corrugated cardboard wing. When multiple outer shells equipped with this structure are placed side-by-side or stacked, the unfolded corrugated cardboard wing can overlap and bond with the second hook surface of the corrugated cardboard wing of adjacent outer shells through the second hook surface, thus forming a horizontally interconnected support network. If the second hook and the second rough surface are placed inside the corrugated cardboard wing, they can be fixed to the outer shell when folded, but cannot effectively overlap with the corrugated cardboard wing of the adjacent outer shell after unfolding, thus losing the core function of group stability. The current outer surface setting method can significantly improve the overall structural stability when multiple boxes are used together, and reduce the risk of multiple boxes tipping over. The design of pasting the second hook horizontally according to the width of the corrugated cardboard wing and pasting the second rough surface according to the same length as the second hook ensures that the two are completely aligned when the corrugated cardboard wing is folded, avoiding the problem of insufficient bonding area and weak bonding due to size mismatch or position deviation, and further improving the bonding reliability of the second hook and the second rough surface.

[0023] The beneficial effects of this utility model are as follows: the box body is made of multi-layer high-strength corrugated cardboard, which provides basic structural strength for the overall box and can prevent the box from easily deforming due to insufficient basic material; the three-dimensional reinforcing frame with a "well"-shaped honeycomb paper core added around the inner wall of the outer shell is bonded to the inner wall of the outer shell with hot melt adhesive, and together with the outer shell, it can form a stable support system, constructing a three-dimensional load-bearing network, effectively dispersing the external pressure on the box during use, thereby greatly improving the overall compression resistance and load-bearing capacity of the box, and preventing the box from deforming and breaking when carrying heavy objects or encountering compression;

[0024] The outer shell includes a composite reinforcement layer, in which a glass fiber reinforced mesh is placed on the inner wall of the outer shell and a polyester film is placed on the outer shell. This combination can significantly enhance the tear resistance and puncture resistance of the carton, reducing the chance of sharp objects damaging the carton and affecting the contents during transportation. The waterproof and moisture-proof coating on the outer surface of the outer shell can effectively prevent external moisture and humidity from entering the inside of the carton, preventing the carton from losing structural strength due to moisture and ensuring that the carton can still maintain good service condition in humid environments. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of a high-strength packaging carton according to the present invention.

[0026] Figure 2 This is a schematic diagram of the corrugated cardboard wing unfolding structure of a high-strength packaging carton according to this utility model.

[0027] Figure 3 This is a schematic diagram of the separation structure of the lid and outer shell of a high-strength packaging carton according to this utility model.

[0028] Figure 4 This is a schematic diagram of a three-dimensional reinforced frame structure for a high-strength packaging carton according to the present invention.

[0029] Figure 5 This is a schematic diagram of a high-strength packaging carton with a separate connecting column and support column according to the present invention.

[0030] Figure 6 This utility model provides a high-strength packaging carton attachment. Figure 5 Enlarged structural diagram at point A in the middle;

[0031] In the diagram, 1 is the outer shell; 2 is the lid; 3 is the bottom plate; 4 is the first rough surface; 5 is the first hook surface; 6 is the three-dimensional reinforcing frame; 7 is the support column; 8 is the connecting column; 9 is the guide groove; 10 is the guide block; 11 is the storage side groove; 12 is the corrugated cardboard wing; 13 is the second rough surface; and 14 is the second hook surface. Detailed Implementation

[0032] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0033] In this embodiment, refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6The high-strength packaging carton specifically includes an outer shell 1. A lid 2 and a bottom plate 3 are respectively added to the upper and lower parts of the outer shell 1. The outer shell 1, lid 2, and bottom plate 3 form the carton body. The carton body is made of multi-layer high-strength corrugated cardboard. Nylon fasteners are connected to the lid 2 and the corresponding part of the outer shell 1. The Nylon fasteners consist of a first rough surface 4 and a first hook surface 5, which are respectively connected to the outer shell 1 and the lid 2. The outer surface of the outer shell 1 is coated with a waterproof and moisture-proof coating. The outer shell 1 includes a composite reinforcement layer, which includes a fiberglass reinforced mesh and a polyester film. The fiberglass reinforced mesh is placed on the inner wall of the outer shell 1, and the polyester film is placed on the outer side of the outer shell 1. A three-dimensional reinforcing frame 6 is added to all four sides of the inner wall of the outer shell 1. The three-dimensional reinforcing frame 6 is a honeycomb paper core in the shape of a "well". The three-dimensional reinforcing frame 6 is bonded to the inner wall of the outer shell 1 with hot melt adhesive.

[0034] Multi-layer high-strength corrugated cardboard is used to process and form the outer shell 1, the lid 2 and the bottom plate 3 respectively; the bottom plate 3 is fixedly connected to the lower part of the outer shell 1 to form the basic load-bearing frame of the carton.

[0035] The first rough surface 4 of the nylon hook fastener is fixedly connected to a preset position on the upper part of the outer shell 1, and the first hook surface 5 of the nylon hook fastener is fixedly connected to the corresponding position of the box cover 2, so as to ensure that the first rough surface 4 and the first hook surface 5 can be precisely fitted when the box cover 2 is closed.

[0036] A glass fiber reinforced mesh is completely laid on the inner wall of the outer shell 1, and a polyester film is completely laid on the outer side of the outer shell 1, so that the glass fiber reinforced mesh and the polyester film work together to form a composite reinforcement layer of the outer shell 1, thereby strengthening the inner and outer sides of the shell.

[0037] The three-dimensional reinforcing frame 6, which is shaped like a "well" honeycomb paper core, is placed around the inner wall of the outer shell 1. Hot melt adhesive is evenly applied to the contact surface between the three-dimensional reinforcing frame 6 and the inner wall of the outer shell 1. After the hot melt adhesive has cured, the three-dimensional reinforcing frame 6 and the inner wall of the outer shell 1 are firmly bonded.

[0038] A waterproof and moisture-proof coating is evenly applied to the outer surface of the outer casing 1 along its entire surface; after the coating has cured naturally, the entire preparation process of the high-strength packaging carton is completed.

[0039] When it is necessary to store items, separate the first hook surface 5 on the box cover 2 from the first rough surface 4 on the outer shell 1, open the box cover 2 and put the items into the box; after the items are placed, close the box cover 2 so that the first hook surface 5 and the first rough surface 4 fit tightly together, and fix the box cover 2 and the outer shell 1 through the cooperation of the nylon fasteners to prevent the items inside the box from falling out during the transportation process.

[0040] The box body is made of multi-layer high-strength corrugated cardboard, which has excellent resistance to compression and deformation, providing basic strength support for the carton.

[0041] The glass fiber reinforced mesh on the inner wall of the outer shell 1 can enhance the structural toughness of the inner wall of the shell and reduce the risk of deformation when the outer shell 1 is subjected to external impact; the polyester film on the outer side of the outer shell 1 and the glass fiber reinforced mesh constitute a composite reinforcement layer, which synergistically strengthens the overall structural strength of the outer shell 1 from both the inside and outside.

[0042] The three-dimensional reinforcing frame 6 around the inner wall of the outer shell 1 is a "well" shaped honeycomb paper core structure. The "well" shaped distribution can form multi-directional support points, effectively improving the impact resistance of the outer shell 1. At the same time, the honeycomb paper core material can avoid excessive weight of the carton while ensuring strength. Furthermore, the three-dimensional reinforcing frame 6 is bonded to the inner wall of the outer shell 1 with hot melt adhesive, which has a strong connection and further ensures the stability of the carton structure.

[0043] The waterproof and moisture-proof coating on the outer surface of the outer shell 1 can effectively prevent moisture and humidity from entering the box, thus preventing the items stored in the box from being damaged by moisture and significantly improving the applicability of the cardboard box in humid environments.

[0044] The lid 2 is connected to the outer shell 1 by Velcro. The opening and closing operation only requires separating or attaching the first rough surface 4 and the first hook surface 5, which is simple and convenient. At the same time, the Velcro can form a stable fixing effect after it is attached, which can prevent the lid 2 from being opened accidentally during the handling and transportation of the carton, and ensure the safety of the contents of the carton.

[0045] The connection between each component is highly reliable: the fixed connection between the bottom plate 3 and the outer shell 1 ensures the stability of the bottom of the box; the connection between the first rough surface 4, the first hook surface 5 and the corresponding component ensures the stability of the opening and closing of the box lid; the hot melt adhesive bonding between the three-dimensional reinforcing frame 6 and the inner wall of the outer shell 1 ensures the stability of the supporting structure. Overall, it can avoid the problem of the carton becoming loose when it is used for a long time or when it is carrying heavy objects.

[0046] like Figure 4 As shown, the three-dimensional reinforced frame 6 includes support columns 7 and connecting columns 8, and the inner cavities of the support columns 7 and connecting columns 8 are all honeycomb-shaped.

[0047] The support columns 7 and connecting columns 8 are assembled according to a pre-designed three-dimensional frame structure. The support columns 7 serve as the vertical support foundation of the three-dimensional reinforced frame 6, while the connecting columns 8 act as the horizontal connecting structure, together forming the complete three-dimensional reinforced frame 6. Finally, the assembled three-dimensional reinforced frame 6 is fitted and installed onto the outer shell 1 to achieve reinforced support for the shell. The honeycomb design of the inner cavities of the support columns 7 and connecting columns 8 significantly reduces their weight while maintaining structural strength, thereby reducing the overall weight of the three-dimensional reinforced frame 6 and the load on the outer shell 1. Furthermore, the honeycomb structure has excellent force transmission characteristics. When the outer shell 1 is subjected to external impact, the support columns 7 and connecting columns 8 can evenly distribute the external force across the entire three-dimensional reinforced frame 6 through the honeycomb cavity, avoiding localized stress concentration and effectively improving the support and protection capabilities of the three-dimensional reinforced frame 6 for the shell, extending the service life of the outer shell 1. Simultaneously, the honeycomb structure's inner cavity also plays a role in buffering and shock absorption, reducing the impact of external vibrations on the internal components of the shell.

[0048] The support columns 7 are located at the four corners of the inner cavity of the outer shell 1, and the two sides of the connecting column 8 are respectively connected to the upper and lower parts of the surface of the adjacent support column 7.

[0049] First, precisely position and fix the support columns 7 at the four corners of the inner cavity of the outer shell 1, ensuring that the support columns 7 are tightly and stably fitted to the inner cavity wall of the outer shell 1. After the support columns 7 are installed, take the connecting column 8 and connect and fix one side of it to the upper part of the surface of one of the support columns 7, and the other side to the upper part of the surface of the adjacent support column 7, completing the installation of the upper connecting column 8. Then, in the same way, connect and fix the two sides of the other set of connecting columns 8 to the lower part of the surface of the adjacent support column 7, so that the support columns 7 and the connecting columns 8 together form a three-dimensional support structure with upper and lower layers in the inner cavity of the outer shell 1. Setting the support columns 7 at the four corners of the inner cavity of the outer shell 1 can take advantage of the stability of the four corner positions, so that the support columns 7 can more evenly bear the force transmitted from all sides of the outer shell 1, and avoid the deformation of the outer shell 1 due to excessive local stress. The connecting columns 8 connect the upper and lower parts of the adjacent support columns 7 respectively, forming two horizontal support planes in the inner cavity of the outer shell 1, further enhancing the connection stability between the support columns 7 and preventing the support columns 7 from tilting or shifting during the stress process. This double-layered structural design allows the three-dimensional reinforced frame 6 to form a more comprehensive support system within the inner cavity of the outer shell 1, significantly improving the overall structural rigidity and deformation resistance of the outer shell 1, and in particular, effectively resisting the lateral and vertical impact forces experienced by the outer shell 1 during handling or use.

[0050] like Figure 5 and Figure 6As shown, a guide groove 9 is provided on the surface of the support column 7. A guide block 10 is slidably connected to the inner cavity of the guide groove 9. The guide block 10 is connected to the two sides of the corresponding connecting column 8. The cross-section of the inner cavity of the guide groove 9 and the guide block 10 are both T-shaped.

[0051] Align the pre-fixed guide blocks 10 on both sides of the connecting column 8 with the openings of the guide grooves 9 on the support column 7. Slowly slide the guide blocks 10 into the inner cavity of the guide groove 9 along its length until they reach the preset connection position, completing the sliding connection assembly of the support column 7 and the connecting column 8. The T-shaped structure design of the guide groove 9 and the guide blocks 10 effectively prevents the guide blocks 10 from falling out of the inner cavity of the guide groove 9 during sliding, ensuring the reliability of the connection between the support column 7 and the connecting column 8. The sliding connection method makes the assembly and disassembly of the support column 7 and the connecting column 8 more convenient. When maintenance or component replacement is required for the three-dimensional reinforcing frame 6, simply slide the guide blocks 10 along the guide groove 9 to separate the support column 7 and the connecting column 8 without the need for complex tools, reducing the difficulty of maintenance operations. At the same time, the guide groove 9 also provides precise guidance for the sliding of the guide blocks 10, ensuring that the connecting column 8 can be accurately installed in the preset position, improving the assembly accuracy of the three-dimensional reinforcing frame 6, and avoiding the impact of connection position deviation on the support effect of the frame.

[0052] like Figure 2 As shown, storage side grooves 11 are provided on the lower center of both sides of the outer shell 1. Corrugated cardboard wing pieces 12 are added to the inner cavity of the storage side grooves 11. The upper part of the corrugated cardboard wing pieces 12 is rotatably connected to the upper part of the inner cavity of the storage side grooves 11.

[0053] The upper part of the corrugated cardboard wing 12 is connected to the upper part of the inner cavity of the storage side groove 11 by a rotating connector, allowing the corrugated cardboard wing 12 to rotate within the inner cavity of the storage side groove 11 around the rotating connection point. When the corrugated cardboard wing 12 is not in use, it is rotated into the inner cavity of the storage side groove 11 for storage. When it is needed, it is rotated out of the inner cavity of the storage side groove 11 to a preset angle. The storage side groove 11 provides a dedicated storage space for the corrugated cardboard wing 12, preventing it from protruding outwards when not in use. The corrugated cardboard wing 12 reduces the overall space occupied by the outer shell 1, making it easier to store and transport. The corrugated cardboard wing 12 adopts a rotating connection, which is simple and convenient to operate. Users can quickly unfold and fold the corrugated cardboard wing 12 according to actual needs. At the same time, the corrugated cardboard material is lightweight, low cost and has a certain structural strength. After unfolding the corrugated cardboard wing 12, it can increase the contact area between the bottom of the outer shell 1 and the placement surface, improve the stability of the outer shell 1 when placed, and prevent the outer shell 1 from tipping over due to uneven placement surface or slight collision.

[0054] The outer surfaces of the corrugated cardboard wings 12 on both sides of the outer shell 1 are respectively provided with a second rough surface 13 and a second hook surface 14, and the second rough surface 13 and the second hook surface 14 are bonded together.

[0055] When the corrugated cardboard wing 12 needs to be stored, flip the corrugated cardboard wing 12 downwards so that it fits against the outer surface of the side wall of the outer shell 1. At this time, the second hook surface 14 on the outer surface of the corrugated cardboard wing 12 will be perfectly aligned with the second rough surface 13 on the outer side wall of the other side wall of the outer shell 1, and the two will naturally bond together to form a fixed structure. When the corrugated cardboard wing 12 needs to be used to achieve a support function, apply external force to separate the second hook surface 14 from the second rough surface 13, and then unfold the corrugated cardboard wing 12. When the corrugated cardboard wing 12 is folded downwards and fits against the outer side wall of the outer shell 1, the precise alignment and bonding of the second hook surface 14 and the second rough surface 13 can form a firm connection structure between the corrugated cardboard wing 12 and the side wall of the outer shell 1, effectively preventing the corrugated cardboard wing 12 from becoming loose or warped due to vibration or collision during transportation or storage of the outer shell 1, ensuring the stability of the component storage and reducing frictional wear between structures. Meanwhile, the second hook surface 14 is designed with the hook surface facing upward, which can directly avoid the problem of the hook surface scratching the inner wall of the outer shell 1 or other structures when folding, and protect the appearance and structural integrity of the outer shell 1 and the corrugated cardboard wing 12. When multiple outer shell 1 boxes equipped with this structure are placed side by side or stacked, the unfolded corrugated cardboard wing 12 can be overlapped and bonded with the second hook surface 14 of the corrugated cardboard wing 12 of the adjacent outer shell 1 through the second hook surface 14 on the outer surface, thereby forming a horizontally interconnected support network. If the second hook surface 14 and the second rough surface 13 are set inside the corrugated cardboard wing 12, although they can be fixed to the outer shell 1 when folded, they cannot effectively overlap with the corrugated cardboard wing 12 of the adjacent outer shell 1 after unfolding, thus losing the core function of group stability. The current outer surface setting method can significantly improve the overall structural stability when multiple boxes are used together, and reduce the risk of multiple boxes tipping over. The design of pasting the second hook surface 14 horizontally according to the width of the corrugated cardboard wing 12 and pasting the second rough surface 13 according to the same length as the second hook surface 14 can ensure that the two are completely aligned when the corrugated cardboard wing 12 is folded, avoiding the problem of insufficient bonding area and weak bonding due to size mismatch or position deviation, and further improving the bonding reliability of the second hook surface 14 and the second rough surface 13.

[0056] This embodiment provides a high-strength packaging carton: multiple layers of high-strength corrugated cardboard are processed into an outer shell 1, a lid 2, and a bottom plate 3; the bottom plate 3 is fixedly connected to the lower part of the outer shell 1 to form the basic load-bearing frame of the carton; the first rough surface 4 of the Velcro fastener is fixedly connected to a preset position on the upper part of the outer shell 1, and the first hook surface 5 of the Velcro fastener is fixedly connected to the corresponding position of the lid 2 to ensure that the first rough surface 4 and the first hook surface 5 can be accurately fitted when the lid 2 is closed;

[0057] A glass fiber reinforced mesh is completely laid on the inner wall of the outer shell 1, and a polyester film is completely laid on the outer side of the outer shell 1, so that the glass fiber reinforced mesh and the polyester film work together to form a composite reinforcement layer of the outer shell 1; the support column 7 and the connecting column 8 are spliced ​​and assembled according to the preset three-dimensional frame structure, and the guide blocks 10 fixed on both sides of the connecting column 8 are aligned with the opening of the guide groove 9 on the support column 7. The guide blocks 10 are slowly slid into the inner cavity of the guide groove 9 along the length direction of the guide groove 9 until the guide blocks 10 slide to the preset connection position, so that the support column 7 serves as the vertical support foundation of the three-dimensional reinforced frame 6, and the connecting column 8 serves as the horizontal connection structure, together forming a complete three-dimensional reinforced frame 6;

[0058] The assembled three-dimensional reinforcing frame 6 is placed around the inner wall of the outer shell 1, ensuring that the support column 7 is tightly and stably attached to the inner wall of the outer shell 1. The two sides of the connecting column 8 are connected to the upper and lower parts of the surface of the adjacent support column 7, respectively, forming a three-dimensional support structure with upper and lower layers in the inner cavity of the outer shell 1. Hot melt adhesive is evenly applied to the contact surface between the three-dimensional reinforcing frame 6 and the inner wall of the outer shell 1. After the hot melt adhesive cures, the three-dimensional reinforcing frame 6 is firmly bonded to the inner wall of the outer shell 1.

[0059] The upper part of the corrugated cardboard wing 12 is connected to the upper part of the inner cavity of the storage side groove 11 by rotating the connector, so that the corrugated cardboard wing 12 can rotate in the inner cavity of the storage side groove 11 with the rotating connection point as the axis. A second rough surface 13 and a second hook surface 14 are respectively added to the outer surface of the corrugated cardboard wing 12 on both sides of the outer shell 1. A waterproof and moisture-proof coating is uniformly coated on the outer surface of the outer shell 1 along its entire surface. After the coating is naturally cured, the entire preparation process of the high-strength packaging carton is completed.

[0060] When items need to be stored, separate the first hook surface 5 on the lid 2 from the first rough surface 4 on the outer shell 1, open the lid 2 and put the items into the box. After the items are placed, close the lid 2 so that the first hook surface 5 and the first rough surface 4 are tightly fitted together. The lid 2 and the outer shell 1 are fixed together by the use of Velcro. When the corrugated cardboard wing 12 is not needed, rotate it into the inner cavity of the storage side groove 11 for storage. Rotate the corrugated cardboard wing 12 so that it fits against the outer surface of the side wall of the outer shell 1. Make the second hook surface 14 on the outer surface of the corrugated cardboard wing 12 completely aligned with the second rough surface 13 on the other side wall of the outer shell 1 and glued and fixed.

[0061] When the corrugated cardboard wing 12 is needed, external force is applied to separate the second hook surface 14 and the second rough surface 13, and it is rotated out of the inner cavity of the storage side groove 11 to a preset angle, increasing the contact area between the bottom of the outer shell 1 and the placement surface; when multiple boxes are placed side by side or stacked, the corrugated cardboard wing 12 of each box is unfolded, and the second hook surface 14 on the outer surface of the corrugated cardboard wing 12 is overlapped and bonded with the second hook surface 14 of the corrugated cardboard wing 12 of the adjacent box to form a horizontally interconnected support network;

[0062] When maintenance or replacement of parts is required for the three-dimensional reinforcing frame 6, slide the guide block 10 out along the guide groove 9 to separate the support column 7 and the connecting column 8. After maintenance or replacement, slide the guide block 10 back into the inner cavity of the guide groove 9 to complete the assembly.

[0063] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the scope of protection of the present invention.

Claims

1. A high-strength packaging carton, comprising an outer shell, with a lid and a bottom plate respectively provided on the upper and lower parts of the outer shell, the outer shell, lid, and bottom plate forming a carton body, characterized in that: The lid and the outer shell are connected by Velcro fasteners. The Velcro fasteners consist of a first rough surface and a first hook surface. The first rough surface and the first hook surface are respectively connected to the outer shell and the lid. The outer surface of the outer shell is coated with a waterproof and moisture-proof coating. The outer shell includes a composite reinforcement layer, which includes a glass fiber reinforced mesh and a polyester film. The glass fiber reinforced mesh is placed on the inner wall of the outer shell, and the polyester film is placed on the outer side of the outer shell. The inner wall of the outer shell is equipped with a three-dimensional reinforcing frame. The three-dimensional reinforcing frame is a honeycomb paper core in the shape of a "well". The three-dimensional reinforcing frame is bonded to the inner wall of the outer shell with hot melt adhesive.

2. The high-strength packaging carton according to claim 1, characterized in that: The three-dimensional reinforced frame includes support columns and connecting columns, and the inner cavities of the support columns and connecting columns are all designed in a honeycomb pattern.

3. The high-strength packaging carton according to claim 2, characterized in that: The support columns are located at the four corners of the inner cavity of the outer shell, and the two sides of the connecting column are respectively connected to the upper and lower parts of the surface of the adjacent support column.

4. The high-strength packaging carton according to claim 3, characterized in that: The surface of the support column is provided with a guide groove, and the inner cavity of the guide groove is slidably connected with a guide block. The guide block is connected to both sides of the corresponding connecting column. The cross-section of the inner cavity of the guide groove and the guide block are both T-shaped.

5. The high-strength packaging carton according to claim 1, characterized in that: The lower center of both sides of the outer shell is provided with a storage side groove. A corrugated cardboard wing is added to the inner cavity of the storage side groove. The upper part of the corrugated cardboard wing is rotatably connected to the upper part of the inner cavity of the storage side groove.

6. A high-strength packaging carton according to claim 5, characterized in that: The outer surfaces of the corrugated cardboard wings on both sides of the outer shell are respectively provided with a second rough surface and a second hook surface, and the second rough surface and the second hook surface are bonded together.

Images