A stackable packaging box
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FOSHAN ZHENGYU PRINTING CO LTD
- Filing Date
- 2025-08-05
- Publication Date
- 2026-05-29
AI Technical Summary
Existing stackable packaging boxes cannot be stacked quickly and efficiently during use and cannot maintain stability, making them prone to tipping over.
A stackable packaging box was designed, which uses corner and slot structure for stacking, and enhances stability and protection through a three-layer material combination (polypropylene film, polyethylene foam and sulfate kraft paperboard), combined with a closure mechanism and stacking components to ensure stability.
It enables rapid and stable stacking of packaging boxes, improves space utilization, and provides comprehensive protection through multiple layers of materials, including moisture protection, shock protection, and impact protection, thereby enhancing the practicality and reliability of the packaging boxes.
Smart Images

Figure CN224297715U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of packaging box technology, and in particular to a stackable packaging box. Background Technology
[0002] Stackable packaging boxes are cleverly designed containers that are easy to store and transport. Their structure typically includes a front panel, back panel, side panels, top panel, and bottom panel. Some panels have raised sections, while opposite panels have recessed sections, allowing multiple boxes to be nested or stacked, thus saving space. This design is not only suitable for gift packaging but is also widely used in packaging for storage tools, food, chemicals, and other products.
[0003] While existing stackable packaging boxes can meet the packaging needs of most products, they cannot be stacked quickly and efficiently during use while maintaining stability and preventing tipping. Therefore, a stackable packaging box is proposed to solve the above problems. Utility Model Content
[0004] To overcome the above shortcomings, this utility model provides a stackable packaging box, which aims to improve the problem that the existing technology cannot achieve fast and stable stacking of packaging boxes.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A stackable packaging box includes a box body, a cover plate rotatably connected to the outside of the box body, a handle rotatably connected to the top of the cover plate, a closing mechanism installed on the outside of the box body, a reinforcing component installed on the inside of the box body, and a stacking component installed at the bottom of the box body; the stacking component includes feet, the feet being fixedly connected to the bottom of the box body, and corner brackets being fixedly connected to the bottom of the feet, with the feet and corner brackets distributed at the four corners of the bottom of the box body;
[0007] As a further description of the above technical solution:
[0008] The top of the cover plate is provided with a slot, and the corner bracket engages with the slot.
[0009] As a further description of the above technical solution:
[0010] The reinforcing component includes an inner layer, which is a polypropylene film, and the inner layer is disposed inside the box body.
[0011] As a further description of the above technical solution:
[0012] The reinforcing component includes a middle layer, which is polyethylene foam, and the middle layer is disposed inside the box body;
[0013] As a further description of the above technical solution:
[0014] The reinforcing component includes an outer layer, which is a sulfate kraft paperboard, and the outer layer is disposed inside the box body;
[0015] As a further description of the above technical solution:
[0016] The reinforcing component includes an inner layer, a middle layer, and an outer layer. The inner layer is a polypropylene film, the middle layer is polyethylene foam, and the outer layer is thiohydrochloric acid kraft paperboard. The outer layer is disposed inside the box body, the middle layer is disposed inside the outer layer, and the inner layer is disposed inside the middle layer.
[0017] As a further description of the above technical solution:
[0018] The closing mechanism includes a driving component and a fixing component. The driving component includes a housing, which is fixedly connected to the outside of the box body. Two inserts are slidably connected in the middle of the housing. A partition is fixedly connected inside the housing. A spring is provided between the two inserts and the partition. A crossbar is fixedly connected inside the housing, and the two inserts are slidably connected to the outside of the crossbar.
[0019] As a further description of the above technical solution:
[0020] The fixing component includes a plug plate, which is fixedly connected to the outside of the cover plate. A slot is provided in the middle of the plug plate, and the plug block is engaged with the slot.
[0021] This utility model has the following beneficial effects:
[0022] 1. In this utility model, the interlocking action of the corner clips and the slots allows the packaging boxes to be stacked, and the pads can maintain stability after stacking, preventing the packaging boxes from collapsing and improving space utilization.
[0023] 2. In this utility model, by combining the materials of the box body into three different materials, the performance of the box body itself is made better. It not only meets the structural requirements of stackability, but also achieves all-round protection for the internal items from pressure resistance, shock resistance to moisture protection, thus improving the practicality and reliability of the packaging box. Attached Figure Description
[0024] Figure 1 This is a three-dimensional schematic diagram of a stackable packaging box proposed in this utility model;
[0025] Figure 2 This is a schematic diagram of the corner locking structure of a stackable packaging box proposed in this utility model;
[0026] Figure 3 This is a schematic diagram of the closing mechanism of a stackable packaging box proposed in this utility model;
[0027] Figure 4 This is a structural schematic diagram of a reinforcing component for a stackable packaging box proposed in this utility model.
[0028] Legend:
[0029] 1. Box body; 2. Cover plate; 3. Handle; 4. Slot; 5. Foot; 6. Corner; 7. Outer shell; 8. Insert block; 9. Spring; 10. Divider; 11. Crossbar; 12. Insert plate; 13. Slot; 14. Inner layer; 15. Middle layer; 16. Outer layer. Detailed Implementation
[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0031] Reference Figure 1 and Figure 2 This utility model provides an embodiment of a stackable packaging box, including a box body 1. A cover plate 2 is rotatably connected to the outside of the box body 1, which closes the box body 1 to prevent external factors from causing contamination inside the packaging box. A handle 3 is rotatably connected to the top of the cover plate 2, which facilitates the movement of the packaging box. A sealing mechanism is installed on the outside of the box body 1, which can quickly seal and open the box body 1. A reinforcing component is installed on the inside of the box body 1 to improve the performance of the box body 1. A stacking component is installed at the bottom of the box body 1 to allow the packaging boxes to be stacked. The stacking component includes feet 5, which are fixedly connected to the bottom of the box body 1 to maintain the stability of the device. An angle bracket 6 is fixedly connected to the bottom of the feet 5, and the feet 5 and the angle bracket 6 are distributed at the four corners of the bottom of the box body 1. A slot 4 is opened on the top of the cover plate 2, and the angle bracket 6 engages with the slot 4 to make the packaging boxes stack more stably.
[0032] Reference Figures 1-4The reinforcing components include an inner layer 14, which is a polypropylene film. The inner layer 14 is located inside the box body 1. The polypropylene film has high hardness, good heat resistance, and excellent chemical stability, making it unlikely to react with the items inside the box. Its smooth surface reduces friction with the items, preventing scratches. Considering its comprehensive moisture-proof, display, and protective properties, the inner layer 14 is the best choice. The reinforcing components also include a middle layer 15, which is a polyethylene foam. The middle layer 15 is located inside the box body 1. The polyethylene foam has good thermal insulation properties and can provide insulation to a certain extent. It effectively isolates the contents from temperature changes, providing continuous and reliable cushioning protection for fragile glassware and delicate electronic products. The reinforcing components include an outer layer 16, which is made of sulfate kraft paperboard and is located inside the box body 1. The sulfate kraft paperboard has a moderate surface roughness, good printability, and can meet various graphic printing needs. Furthermore, the material is recyclable and biodegradable, meeting green packaging industry standards. The reinforcing components also include an inner layer 14, a middle layer 15, and an outer layer 16. The inner layer 14 is made of polypropylene. The box body 1 has a polyethylene film, a middle layer 15 made of polyethylene foam, and an outer layer 16 made of kraft paperboard. The outer layer 16 is located inside the box body 1, the middle layer 15 is located inside the outer layer 16, and the inner layer 14 is located inside the middle layer 15. The sealing mechanism includes a driving component and a fixing component. The driving component includes a housing 7, which is fixedly connected to the outside of the box body 1. The housing 7 protects the internal parts from damage. Two inserts 8 are slidably connected in the middle of the housing 7. A partition 10 is fixedly connected inside the housing 7. The partition 10 prevents the spring 9 from being squeezed by the inserts 8. During the process, if there is misalignment, springs 9 are provided between the two insert blocks 8 and the partition plate 10. The elasticity of the springs 9 allows the insert blocks 8 to quickly return to the correct position. A crossbar 11 is fixedly connected inside the outer shell 7. The crossbar 11 can assist the insert blocks 8 in moving. The two insert blocks 8 are slidably connected to the outside of the crossbar 11. The fixing component includes an insert plate 12, which is fixedly connected to the outside of the cover plate 2. A slot 13 is provided in the middle of the insert plate 12. The insert blocks 8 and the slot 13 are interlocked. By inserting the insert blocks 8 into the slot 13, the cover plate 2 can be tightly sealed to the top of the box 1.
[0033] Working principle: First, when there are too many packaging boxes, they need to be stacked to save space. At this time, by aligning the corner 6 at the bottom of box 1 with the slot 4 on the top cover of another packaging box, and then inserting the corner 6 into the slot 4, the packaging boxes can be stacked. The pads 5 can ensure the stability of the packaging boxes when stacked and prevent the packaging boxes from tilting.
[0034] Secondly, the packaging box is made of three different materials, which makes the overall performance of the packaging box better. The inner layer 14 is a polypropylene film. Polypropylene film has excellent moisture-proof performance and can effectively block moisture penetration, providing reliable protection for moisture-sensitive food, medicine and other items. The middle layer 15 is polyethylene foam. It has low density and light weight, but has excellent cushioning performance. Its closed-cell structure can not only effectively absorb and disperse external impacts and reduce the risk of damage to internal items, but also has a certain degree of water resistance. The outer layer 16 is sulfate kraft paperboard. Sulfate kraft paperboard has outstanding performance in terms of tensile strength, bursting strength and folding endurance among paper packaging materials. Its excellent stiffness can ensure that the packaging box maintains structural stability when stacked and resists external impacts and compression.
[0035] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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 utility model should be included within the protection scope of the present utility model.
Claims
1. A stackable packaging box, comprising a box body (1), characterized in that: The box body (1) is rotatably connected to a cover plate (2), the top of the cover plate (2) is rotatably connected to a handle (3), the box body (1) is equipped with a closing mechanism, the box body (1) is equipped with a reinforcing component, and the box body (1) is equipped with a stacking component at the bottom. The stacking assembly includes feet (5), which are fixedly connected to the bottom of the box body (1). The bottom of the feet (5) is fixedly connected to corner brackets (6), and the feet (5) and corner brackets (6) are distributed at the four corners of the bottom of the box body (1).
2. A stackable packaging box according to claim 1, characterized in that: The top of the cover plate (2) is provided with a slot (4), and the corner (6) engages with the slot (4).
3. A stackable packaging box according to claim 1, characterized in that: The reinforcing component includes an inner layer (14), which is a polypropylene film, and the inner layer (14) is disposed inside the box body (1).
4. A stackable packaging box according to claim 1, characterized in that: The reinforcing component includes a middle layer (15), which is polyethylene foam, and the middle layer (15) is disposed inside the box body (1).
5. A stackable packaging box according to claim 1, characterized in that: The reinforcing component includes an outer layer (16), which is a sulfate kraft paperboard, and the outer layer (16) is disposed inside the box body (1).
6. A stackable packaging box according to claim 1, characterized in that: The reinforcing component includes an inner layer (14), a middle layer (15), and an outer layer (16). The inner layer (14) is a polypropylene film, the middle layer (15) is polyethylene foam, and the outer layer (16) is thiocyanate kraft paperboard. The outer layer (16) is disposed inside the box body (1), the middle layer (15) is disposed inside the outer layer (16), and the inner layer (14) is disposed inside the middle layer (15).
7. A stackable packaging box according to claim 1, characterized in that: The closing mechanism includes a driving component and a fixing component. The driving component includes a housing (7), which is fixedly connected to the outside of the box body (1). Two inserts (8) are slidably connected in the middle of the housing (7). A partition (10) is fixedly connected inside the housing (7). A spring (9) is provided between the two inserts (8) and the partition (10). A crossbar (11) is fixedly connected inside the housing (7). The two inserts (8) are slidably connected to the outside of the crossbar (11).
8. A stackable packaging box according to claim 7, characterized in that: The fixing component includes a plug plate (12), which is fixedly connected to the outside of the cover plate (2). A slot (13) is provided in the middle of the plug plate (12), and the plug block (8) is engaged with the slot (13).