Biodegradable environment-friendly packaging carton structure

Abstract

The invention discloses a biodegradable environment-friendly packaging carton structure, and relates to the technical field of environment-friendly cartons, the biodegradable environment-friendly packaging carton structure comprises a bottom plate, an L-shaped supporting plate, an L-shaped movable plate and a degradable top plate, and further comprises an adjusting frame fixed at the upper end of the L-shaped movable plate; the degradable side plates are symmetrically arranged between the bottom plate and the adjusting frame in pairs, the degradable side plates are arranged to be of a wave-shaped structure, and the degradable side plates are used for improving the anti-extrusion strength of the side faces of the carton and adjusting the depth of the inner sides of the degradable side plates according to stored articles; the mounting parts are arranged at the top of the bottom plate and the bottom of the adjusting frame; the adaptive supporting parts are arranged in each group of degradable side plates; the degradable side plates of a wave-shaped structure are adopted as side face structures of the carton, the impact resistance is improved, the carton is not prone to sinking inwards, and the degradable side plates are convenient to disassemble and replace after being damaged and can be biodegraded after being discarded.

Description

Technical Field

[0001] This invention relates to the field of environmentally friendly cardboard box technology, specifically to a biodegradable environmentally friendly packaging cardboard box structure. Background Technology

[0002] With the advocacy and implementation of environmental protection, packaging cartons used for packaging goods are usually made of biodegradable materials to meet environmental protection standards. The main components of biodegradable materials can be decomposed by microorganisms into carbon dioxide, water, mineralized inorganic salts of the elements they contain, and new biomass. The material can eventually be completely metabolized by microorganisms and is harmless to the environment.

[0003] When packaging damaged items, high-quality multi-layer cardboard is usually used. Although cardboard has limited rigidity, multi-layer cardboard is not easily damaged by minor external impacts and can provide some protection.

[0004] In the existing technology, most cardboard box structures are made by folding an integrated cardboard structure. If the cardboard is not damaged by an external impact, the impacted area of ​​the cardboard will deform inward, which can easily damage the contents. After being damaged by an external impact, since only a small part of the cardboard is damaged, the entire packaging box needs to be replaced. The damaged packaging box can only be discarded for biodegradation, and its service life is limited.

[0005] To address the aforementioned issues, there is an urgent need for innovative designs based on existing packaging cartons. Summary of the Invention

[0006] This invention addresses the problem of overly simplistic solutions in existing technologies by providing a significantly different approach. Specifically, the invention aims to provide a biodegradable and environmentally friendly packaging carton structure to solve the problems mentioned in the background: when cardboard is subjected to external impact without damage, the impacted area deforms inward, easily damaging the contents; and when damaged by external impact, only a small portion of the cardboard is damaged, requiring the entire packaging carton to be replaced, while the damaged carton must be discarded for biodegradation.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a biodegradable and environmentally friendly packaging carton structure, comprising a bottom plate, an L-shaped support plate, an L-shaped movable plate, and a biodegradable top plate, and further comprising: An adjustment frame is fixed to the upper end of the L-shaped movable plate. The adjustment frame is used to synchronously adjust the longitudinal displacement of the L-shaped movable plate. Biodegradable side panels are symmetrically arranged in pairs between the base plate and the adjustment frame. The biodegradable side panels are designed with a wavy structure. The biodegradable side panels are used to improve the compressive strength of the sides of the carton and the inner depth of the biodegradable side panels can be adjusted according to the items stored. The mounting components are located at the top of the base plate and the bottom of the adjustment frame, and the mounting components are used to disassemble and replace the biodegradable side plate. An adaptive support component is provided inside each set of biodegradable side panels, the adaptive support component being used to prevent the biodegradable side panels from being compressed and thus collapsing inward as a whole; An adjustment and positioning component is installed at the concave surface of each group of L-shaped movable plates. The adjustment and positioning component is used to initially limit the longitudinal deformation of the biodegradable side plate and to perform secondary positioning after the biodegradable top plate is closed.

[0008] Preferably, the L-shaped support plates are symmetrically fixed to the top of the base plate in pairs; The L-shaped movable plates are respectively attached to the concave surface of the L-shaped support plate.

[0009] Preferably, the mounting component includes hooks that are relatively fixed to the top of the base plate and the bottom of the adjustment frame; The biodegradable side plate has mounting holes at both ends corresponding to the hooks.

[0010] Preferably, the adaptive support component includes a fixing post fixed to the top of the base plate and extending through the biodegradable side plate; The fixing column is configured as a multi-segment structure, and each segment of the fixing column is disassembled and installed by means of threads; The biodegradable side plate is provided with movable grooves at equal intervals located outside the fixed column; The biodegradable top plate is provided with sliding holes that slide in conjunction with the fixed column.

[0011] Preferably, the adjusting and positioning component includes an oil cylinder fixed to the top of the base plate; A first spring is fixed to the inner wall of the bottom end of the oil cylinder; The top of the first spring is fixed with a first piston that slides in cooperation with the oil cylinder; The lower end of the oil cylinder has a vent hole on its outer wall; A second piston is disposed above the first piston and slides in cooperation with the inner wall of the oil cylinder; The top of the second piston is fixed with a central column that slides in a sealing manner with the top of the oil cylinder.

[0012] Preferably, the adjusting and positioning component further includes a damping mechanism disposed inside the second piston and the central column; A support ring is fixed between the upper outer wall of the central column and the L-shaped movable plate.

[0013] Preferably, the damping mechanism includes a turntable disposed at the center of the second piston, the turntable being capable of sealed rotation inside the second piston; The second piston and the inside of the turntable have a damping hole running through them; The second piston has a through groove at its internal center that passes through the turntable and the central column, and a second spring is fixed to the inner wall of the bottom end of the through groove. The top of the second spring is fixed with a sliding post that slides in conjunction with the through groove; The lower outer wall of the sliding column is threadedly fitted with the inner wall of the through groove of the turntable.

[0014] Preferably, the damping mechanism further includes three sets of elastic plates fixed at equal angles to the top of the sliding column; The upper end of each set of elastic sheets forms a conical arc surface structure; The upper outer wall of the sliding column is fixed with a pressure bar located between two adjacent sets of elastic plates.

[0015] Preferably, the biodegradable top plate has through holes that fit into the lower outer walls of the three sets of elastic sheets.

[0016] Compared with the prior art, the beneficial effects of the present invention are: (1) In this invention, by setting the side of the carton structure as a degradable side plate with a wave-shaped structure, the impact resistance of the carton structure is improved under the lateral support of the fixed column when it is not damaged by impact, making it less likely to dent inward, thereby avoiding damage to the internal items under non-strong impact. (2) In this invention, when the biodegradable side panel is damaged by a strong impact, the biodegradable top panel can be disassembled first, and then the damaged biodegradable side panel can be disassembled and replaced using hooks and mounting holes. The damaged biodegradable side panel can be discarded for biodegradation, thereby avoiding the need to replace the entire carton due to damage in some areas. (3) In the assembly process of the carton structure, the adjustment frame is pulled up to stretch and deform the biodegradable side plate. At the same time, the L-shaped movable plate drives the central column to move upward through the support ring frame. The central column drives the second piston to slide upward in the oil cylinder. At this time, the second piston and the damping hole in the turntable are in a connected state. The oil flowing through the damping hole can generate a damping effect on the sliding of the second piston in the oil cylinder. After adjusting the stretching amount of the biodegradable side plate, the adjustment frame can be released. Without applying pressure to the adjustment frame, the longitudinal position of the adjustment frame is initially limited by the damping effect. Thus, the storage space of the carton can be adjusted according to the size of the items, and it is easy to operate. (4) In the sealing process of this invention, the biodegradable top plate moves longitudinally along the outer wall of the fixed column via the sliding holes, so that the insertion holes at the four corners of the biodegradable top plate correspond to the elastic plates respectively. When the four corners of the biodegradable top plate are pressed down, the inner wall of the insertion hole will squeeze the conical arc surface formed by the three sets of elastic plates, causing the upper ends of the three sets of elastic plates to contract and deform inward until the biodegradable top plate moves to below the conical arc surface of the three sets of elastic plates. The three sets of elastic plates elastically reset and lock the biodegradable top plate at the top of the adjusting frame. At the same time, the biodegradable top plate is locked and positioned. The pressure bar is pushed downwards, which in turn causes the sliding column to move downwards within the through groove of the central column for a fixed stroke. When the bottom of the sliding column compresses the second spring, the threaded fit between the lower end of the sliding column and the through groove of the turntable causes the turntable to rotate at a certain angle as the sliding column moves downwards. At this time, the damping hole of the second piston is closed, and the central column cannot drive the second piston to slide longitudinally. This prevents the adjustment frame from moving due to pressure on the top when stacking the carton structure, further improving the protection of the carton structure for the items stored inside. Attached Figure Description

[0017] Figure 1 This is a perspective view of the present invention; Figure 2 This is a plan view of the present invention; Figure 3 This is a perspective view of the present invention after removing the biodegradable side panel and biodegradable top panel; Figure 4 This is a plan view of the present invention after removing the biodegradable side plate and biodegradable top plate; Figure 5 For the present invention Figure 3 Enlarged view of point A in the image; Figure 6 This is a perspective view of a single biodegradable side plate of the present invention; Figure 7 This is a perspective view of a single fixed column of the present invention; Figure 8 This is a cross-sectional perspective view of the adjusting positioning component of the present invention; Figure 9 This is a sectional perspective view of the second piston of the present invention; Figure 10 This is a cross-sectional plan view of the second piston of the present invention.

[0018] In the diagram: 1. Base plate; 2. L-shaped support plate; 3. L-shaped movable plate; 4. Adjustment frame; 5. Hook; 6. Biodegradable side plate; 7. Mounting hole; 8. Fixed column; 9. Movable groove; 10. Oil cylinder; 11. First spring; 12. First piston; 13. Second piston; 14. Central column; 15. Turntable; 16. Damping hole; 17. Second spring; 18. Sliding column; 19. Support ring frame; 20. Elastic sheet; 21. Pressure rod; 22. Biodegradable top plate. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figures 1 to 10 This invention provides a technical solution: a biodegradable and environmentally friendly packaging carton structure, including a bottom plate 1, an L-shaped support plate 2, an L-shaped movable plate 3, and a biodegradable top plate 22, and further comprising: Adjustment frame 4 is fixed to the upper end of L-shaped movable plate 3. Adjustment frame 4 is used to synchronously adjust the longitudinal displacement of L-shaped movable plate 3. Biodegradable side panels 6 are symmetrically arranged in pairs between the bottom plate 1 and the adjustment frame 4. The biodegradable side panels 6 are designed with a wavy structure. The biodegradable side panels 6 are used to improve the compressive strength of the side of the carton and adjust the inner depth of the biodegradable side panels 6 according to the items stored. The mounting components are located on the top of the base plate 1 and the bottom of the adjustment frame 4. The mounting components are used to disassemble and replace the biodegradable side plate 6. An adaptive support component is provided inside each set of biodegradable side panels 6. The adaptive support component is used to prevent the biodegradable side panels 6 from being compressed and thus inwardly recessed. The adjusting positioning component is set at the concave surface of each group of L-shaped movable plates 3. The adjusting positioning component is used to initially limit the longitudinal deformation of the biodegradable side plate 6, and to perform secondary positioning after the biodegradable top plate 22 is closed.

[0021] In practice, both the biodegradable side panel 6 and the biodegradable top panel 22 are made of biodegradable cardboard, which is convenient to disassemble and replace during use and can be discarded for biodegradation, ensuring the environmental friendliness of the packaging box.

[0022] The L-shaped support plates 2 are symmetrically fixed to the top of the base plate 1 in pairs; The L-shaped movable plates 3 are respectively attached to the concave surface of the L-shaped support plate 2.

[0023] In practice, since the convex right angle of the L-shaped movable plate 3 fits the concave right angle of the L-shaped support plate 2, the longitudinal movement of the L-shaped movable plate 3 can be limited.

[0024] The mounting components include hooks 5 that are fixed relative to the top of the base plate 1 and the bottom of the adjustment frame 4; The biodegradable side panel 6 has mounting holes 7 at both ends corresponding to the hooks 5.

[0025] In practice, since the biodegradable side panel 6 is made of cardboard and has a certain degree of deformability, it is convenient to disassemble and install the biodegradable side panel 6 by passing the hook 5 through the mounting hole 7.

[0026] The adaptive support components include a fixing post 8 that is fixed to the top of the base plate 1 and extends through the biodegradable side plate 6; The fixing column 8 is configured as a multi-segment structure, and each segment of the fixing column 8 is disassembled and installed via threads; The biodegradable side plate 6 has movable grooves 9 at equal intervals located outside the fixed column 8; The biodegradable top plate 22 is provided with sliding holes that slide in conjunction with the fixed column 8.

[0027] In practice, the bottom section of the fixed column 8 is also disassembled and installed by tightening the threads between it and the base plate 1.

[0028] The adjusting and positioning component includes an oil cylinder 10 fixed to the top of the base plate 1; A first spring 11 is fixed to the inner wall of the bottom end of the oil cylinder 10; The top of the first spring 11 is fixed with a first piston 12 that slides in cooperation with the oil cylinder 10; A vent hole is provided on the lower outer wall of the oil cylinder 10; A second piston 13 is disposed above the first piston 12 and slides in cooperation with the inner wall of the oil cylinder 10; The top of the second piston 13 is fixed with a central column 14 that slides in a sealed manner with the top of the oil cylinder 10.

[0029] In practice, when the first piston 12 slides, the pressure at the bottom is balanced by the pressure relief hole opened at the lower end of the oil cylinder 10.

[0030] The adjusting positioning component also includes a damping mechanism disposed inside the second piston 13 and the central column 14; A support ring 19 is fixed between the upper outer wall of the central column 14 and the L-shaped movable plate 3.

[0031] In practice, the L-shaped movable plate 3 drives the central column 14 to move longitudinally synchronously through the support ring frame 19.

[0032] The damping mechanism includes a turntable 15 located at the center of the second piston 13, which can rotate in a sealed manner inside the second piston 13. A damping hole 16 is provided through the interior of the second piston 13 and the turntable 15; The second piston 13 has a through groove at its center that passes through the turntable 15 and the central column 14, and a second spring 17 is fixed to the inner wall of the bottom end of the through groove. The top of the second spring 17 is fixed with a sliding post 18 that slides in conjunction with the through groove; The lower outer wall of the sliding column 18 is threadedly fitted with the inner wall of the through groove of the turntable 15.

[0033] In practice, when the sliding column 18 moves longitudinally in the through groove, it can drive the turntable 15 to rotate through the thread at the lower end, thereby opening or closing the damping hole 16.

[0034] The damping mechanism also includes three sets of elastic plates 20 that are fixed at equal angles to the top of the sliding column 18; The upper end of each set of elastic sheets 20 forms a conical arc surface structure; A pressure bar 21 is fixed to the upper outer wall of the sliding column 18, located between two adjacent sets of elastic plates 20.

[0035] The biodegradable top plate 22 has through holes that fit into the lower outer wall of the three sets of elastic sheets 20.

[0036] In practice, the three sets of elastic sheets 20 can be made of elastic plastic material.

[0037] Working principle: First, before using this environmentally friendly packaging box, the box structure needs to be assembled. The box frame before assembly is as follows: Figure 3 As shown, the multi-segment fixed columns 8 are first spliced ​​together. The fixed columns 8 are all tightened with threads. The length of the fixed columns 8 is appropriate for the height of the objects stored inside, so that the height of the fixed columns 8 after thread splicing is slightly higher than the height of the objects stored inside. The fixed columns 8 at the bottom are also fixed to the bottom plate 1 by thread tightening. At this time, the biodegradable side plates 6 are installed on the four sides of the bottom plate 1 by passing the fixed columns 8 through the movable grooves 9. The mounting holes 7 at both ends of each set of biodegradable side plates 6 are respectively fitted onto the hooks 5 at the top of the bottom plate 1 and the bottom of the adjustment frame 4, thus completing the initial assembly of the packaging carton.

[0038] Then, the item can be placed on the base plate 1. When the height of the item is higher than the depth enclosed by the base plate 1 and the biodegradable side plate 6, a certain pulling force can be applied to lift the adjustment frame 4 upward. The adjustment frame 4 pulls the upper end of the biodegradable side plate 6 simultaneously through the hook 5, causing the biodegradable side plate 6 to lengthen. The two sides of the biodegradable side plate 6 always adhere to the outer wall of the L-shaped support plate 2, and the biodegradable side plate 6 remains in a wavy structure after being stretched and deformed. During the deformation of the biodegradable side plate 6, the movable groove 9 moves adaptively outside the fixed column 8. At the same time, the adjustment frame 4 drives the L-shaped movable plate 3 to move upward synchronously. The L-shaped movable plate 3 drives the central column 14 to move upward through the support ring frame 19. The central column 14 drives the second piston 13 to slide upwards within the oil cylinder 10. At this time, the second piston 13 and the damping hole 16 in the turntable 15 are in a connected state. When the second piston 13 slides upwards, it will squeeze the oil above and deliver it to the bottom of the second piston 13 through the damping hole 16. The flow of oil through the damping hole 16 can generate a damping effect on the sliding of the second piston 13 within the oil cylinder 10. Similarly, when the second piston 13 slides downwards, it will also generate resistance. Therefore, to make the second piston 13 move longitudinally, a moving pressure or tension needs to be applied. After adjusting the stretch of the biodegradable side plate 6, the adjusting frame 4 can be loosened. Without applying pressure to the adjusting frame 4... Under pressure, the damping effect initially limits the longitudinal position of the adjusting frame 4. At this point, the biodegradable top plate 22 can be fastened to the top of the adjusting frame 4 for sealing. The biodegradable top plate 22 moves longitudinally along the outer wall of the fixing column 8 through the sliding holes, so that the insertion holes at the four corners of the biodegradable top plate 22 correspond to the elastic plates 20 respectively. Pressing down on the four corners of the biodegradable top plate 22 will compress the inner wall of the insertion holes into the conical arc surface formed by the three sets of elastic plates 20, causing the upper ends of the three sets of elastic plates 20 to contract and deform inward until the biodegradable top plate 22 moves below the conical arc surface of the three sets of elastic plates 20. The three sets of elastic plates 20 then elastically reset and lower the frame. The degradable top plate 22 is locked onto the top of the adjusting frame 4. At the same time, the degradable top plate 22 pushes the pressure rod 21 downward. The pressure rod 21 then drives the sliding column 18 to move downward within the through groove of the central column 14 for a fixed stroke. When the bottom of the sliding column 18 compresses the second spring 17, due to the threaded engagement between the lower end of the sliding column 18 and the through groove of the turntable 15, the sliding column 18 moves downward and drives the turntable 15 to rotate at a certain angle. At this time, the damping hole 16 of the second piston 13 is in a closed state, and the central column 14 cannot drive the second piston 13 to slide longitudinally. Thus, when stacking the carton structure, the adjusting frame 4 is prevented from moving due to pressure on the top.

[0039] Since the oil cylinder 10 contains the central column 14 in the area above the second piston 13, when the second piston 13 slides longitudinally, the oil delivered above and below the second piston 13 through the damping hole 16 will be unbalanced. The balance of oil delivery in the oil cylinder 10 can be ensured by the longitudinal sliding of the first piston 12 located at the bottom of the oil cylinder 10 to pull or squeeze the first spring 11. When the first piston 12 slides, the pressure at the bottom is balanced by the pressure relief hole opened at the lower end of the oil cylinder 10.

[0040] Finally, when the biodegradable side panel 6 of the carton structure is not damaged by impact, the corrugated structure of the biodegradable side panel 6, under the lateral support of the fixed column 8, improves the impact resistance of the carton structure and makes it less prone to indentation. When the biodegradable side panel 6 is damaged by impact, the biodegradable top panel 22 can be disassembled, and the damaged set of biodegradable side panels 6 can be disassembled and replaced through the hook 5 and the mounting hole 7. The damaged biodegradable side panels 6 are then discarded for biodegradation.

[0041] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A biodegradable and environmentally friendly packaging carton structure, comprising a bottom plate (1), an L-shaped support plate (2), an L-shaped movable plate (3), and a biodegradable top plate (22), characterized in that, Also includes: An adjustment frame (4) is fixed to the upper end of the L-shaped movable plate (3). The adjustment frame (4) is used to synchronously adjust the longitudinal displacement of the L-shaped movable plate (3). Biodegradable side panels (6) are symmetrically arranged in pairs between the bottom plate (1) and the adjustment frame (4). The biodegradable side panels (6) are configured with a wave-shaped structure. The biodegradable side panels (6) are used to improve the compressive strength of the side of the carton and adjust the inner depth of the biodegradable side panels (6) according to the items stored. The mounting components are located at the top of the base plate (1) and the bottom of the adjustment frame (4), and the mounting components are used to disassemble and replace the biodegradable side plate (6); An adaptive support component is provided inside each set of biodegradable side panels (6), the adaptive support component being used to prevent the biodegradable side panels (6) from being compressed and thus collapsing inwards; An adjustment positioning component is set at the concave surface of each group of L-shaped movable plates (3). The adjustment positioning component is used to initially limit the longitudinal deformation of the biodegradable side plate (6) and to perform secondary positioning after the biodegradable top plate (22) is closed.

2. The biodegradable and environmentally friendly packaging carton structure according to claim 1, characterized in that: The L-shaped support plates (2) are symmetrically fixed to the top of the base plate (1) in pairs; The L-shaped movable plates (3) are respectively attached to the concave surface of the L-shaped support plate (2).

3. The biodegradable and environmentally friendly packaging carton structure according to claim 1, characterized in that: The mounting components include hooks (5) that are fixed relative to the top of the base plate (1) and the bottom of the adjustment frame (4); The biodegradable side plate (6) has mounting holes (7) at both ends corresponding to the hooks (5).

4. The biodegradable and environmentally friendly packaging carton structure according to claim 1, characterized in that: The adaptive support component includes a fixing column (8) fixed to the top of the base plate (1) and extending through the biodegradable side plate (6); The fixing column (8) is configured as a multi-segment structure, and each segment of the fixing column (8) is disassembled and installed by means of threads; The biodegradable side plate (6) has movable grooves (9) at equal intervals located outside the fixed column (8); The biodegradable top plate (22) is provided with sliding holes that slide in conjunction with the fixed column (8).

5. The biodegradable and environmentally friendly packaging carton structure according to claim 1, characterized in that: The adjustment and positioning component includes an oil cylinder (10) fixed to the top of the base plate (1). A first spring (11) is fixed to the inner wall of the bottom end of the oil cylinder (10). The top of the first spring (11) is fixed with a first piston (12) that slides in cooperation with the oil cylinder (10); The lower end of the oil cylinder (10) has a vent hole on its outer wall; A second piston (13) is provided above the first piston (12) and slides in cooperation with the inner wall of the oil cylinder (10). The top of the second piston (13) is fixed with a central column (14) that slides in a sealed manner with the top of the oil cylinder (10).

6. The biodegradable and environmentally friendly packaging carton structure according to claim 5, characterized in that: The adjustment and positioning component also includes a damping mechanism disposed inside the second piston (13) and the central column (14); A support ring (19) is fixed between the upper outer wall of the central column (14) and the L-shaped movable plate (3).

7. The biodegradable and environmentally friendly packaging carton structure according to claim 6, characterized in that: The damping mechanism includes a turntable (15) located at the center of the second piston (13), the turntable (15) being able to rotate in a sealed manner inside the second piston (13); The second piston (13) and the turntable (15) have a damping hole (16) through them. The second piston (13) has a through groove at the center of its interior that passes through the turntable (15) and the central column (14), and a second spring (17) is fixed to the inner wall of the bottom end of the through groove. The top of the second spring (17) is fixed with a sliding post (18) that slides in a through groove. The lower outer wall of the sliding column (18) is threadedly fitted with the inner wall of the through groove of the turntable (15).

8. The biodegradable and environmentally friendly packaging carton structure according to claim 7, characterized in that: The damping mechanism also includes three sets of elastic plates (20) that are fixed at equal angles to the top of the slide column (18). The upper end of each set of elastic sheets (20) forms a conical arc surface structure; The upper outer wall of the sliding column (18) is fixed with a pressure rod (21) located between two adjacent sets of elastic plates (20).

9. The biodegradable and environmentally friendly packaging carton structure according to claim 8, characterized in that: The biodegradable top plate (22) has through holes that fit into the lower outer wall of the three sets of elastic sheets (20).

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