Molded pulp packaging box with high buffering performance
By introducing cushioning mechanisms and limiting structures into pulp molded packaging boxes, the problems of poor support and easy breakage of objects in the packaging boxes are solved, achieving efficient cushioning protection and stable transportation.
Patent Information
- Application Number
- CN202520359444.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-04
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-03-04
AI Technical Summary
Existing pulp molded packaging boxes lack cushioning or custom-designed cushioning functions, resulting in poor packaging support and a lack of limiting devices, making the contents easily damaged and reducing transportation efficiency.
Design a highly cushioned pulp molded packaging box, including a cushioning mechanism between the outer shell and the inner shell, equipped with structures such as a limiting frame, a sliding plate, a limiting post and an anti-slip pad, which work together to absorb impact and prevent objects from shaking.
It improves the support and transportation efficiency of the packaging box, protects the internal objects from damage, and absorbs impact through restorable deformation to prevent objects from moving around.
Smart Images

Figure CN223836215U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pulp molded packaging box technology, and in particular to a highly cushioning pulp molded packaging box. Background Technology
[0002] Pulp molding is a three-dimensional papermaking technology. It uses waste paper as raw material, shaping it into specific paper products using special molds on a molding machine. It has four major advantages: the raw material is waste paper, including cardboard, waste corrugated cardboard, and waste white paper, making it widely available; the production process involves pulping, adsorption molding, drying, and shaping, making it environmentally friendly; it is recyclable; it is smaller than foamed plastics, can be stacked, and is convenient for transportation; besides being used for lunch boxes and tableware, pulp molding is increasingly used for industrial cushioning packaging, and its development is very rapid. However, existing pulp molding packaging boxes either lack cushioning functions or have custom-designed cushioning functions, resulting in poor packaging support and a lack of internal restraint devices, making the contents easily damaged upon impact, greatly reducing transportation efficiency; therefore, these problems need to be addressed. Utility Model Content
[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing a highly cushioning pulp molded packaging box.
[0004] To achieve the above objectives, the present invention adopts the following technical solution: a high-buffering pulp molded packaging box, comprising an outer shell and an inner shell, wherein a buffer mechanism is provided between the outer shell and the inner shell, a cover plate is installed at the top of the buffer mechanism, a limiting frame is installed at the top of the outer shell, a sliding groove is provided on the inner wall of the limiting frame, and a sliding plate is slidably connected inside the limiting frame, and limiting holes are provided on both sides of the upper front end of the outer shell, limiting posts are installed at the front and rear ends of the inner wall of the inner shell, and an anti-slip pad is placed on the bottom surface inside the inner shell.
[0005] Preferably, the top front and rear ends of the anti-slip mat are provided with limiting grooves that cooperate with the limiting posts, the top surface of the anti-slip mat is provided with a plurality of equidistant ventilation openings, and the anti-slip mat is provided with a plurality of equidistant anti-slip protrusions.
[0006] Preferably, limit blocks are installed on both sides of the front end of the bottom of the sliding plate, and limit rods are fixedly connected to the limit blocks. The limit rods are inserted into the limit holes of the outer shell, and a sealing block is provided at the rear end of the limit blocks. The sealing block is located behind the upper end of the limit rod and is installed on the bottom surface of the sliding plate.
[0007] Preferably, the limiting frame has a sliding groove inside, and the sliding plate is inserted into the sliding groove.
[0008] Preferably, the buffer mechanism includes an outer buffer shell and an inner buffer shell. The lower end of the outer buffer shell is provided with a plurality of equidistant first mounting slots, and the upper end of the inner buffer shell is provided with a plurality of equidistant second mounting slots. A plurality of equidistant connecting plates are staggered between the outer buffer shell and the inner buffer shell.
[0009] Preferably, a third mounting groove is provided at the upper outer side of the connecting plate, and a fourth mounting groove is provided at the lower inner side of the connecting plate. The third mounting groove is provided at a distance from the first mounting groove, and the fourth mounting groove is provided at the second mounting groove.
[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: The cooperation of the inner buffer shell, outer buffer shell, and connecting plate facilitates the repositionable deformation of the inner and outer buffer shells after impact, thereby absorbing the impact force and protecting the safety of the internal objects. Furthermore, the cooperation of the limiting post and limiting groove prevents the anti-slip pad from moving, ensuring that the internal objects do not shake arbitrarily and improving transportation efficiency. Ultimately, it solves the problems of poor packaging support and easy damage to internal objects. Attached Figure Description
[0011] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:
[0012] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the device proposed in this utility model;
[0013] Figure 2 This is a schematic diagram of the opened structure of the device proposed in this utility model;
[0014] Figure 3 This is a schematic diagram of the internal structure of the device proposed in this utility model;
[0015] Figure 4 This is a schematic diagram of the sliding plate structure proposed in this utility model;
[0016] Figure 5 This is a schematic diagram of the buffer mechanism structure proposed in this utility model;
[0017] Figure 6 This is a schematic diagram of the exploded structure of the buffer mechanism proposed in this utility model;
[0018] Figure 7 This is a schematic diagram of the anti-slip mat structure proposed in this utility model.
[0019] The numbers in the diagram are: 1. Outer shell; 2. Inner shell; 3. Limiting frame; 4. Sliding plate; 5. Anti-slip pad; 6. Anti-slip protrusion; 7. Sealing block; 8. Limiting block; 9. Outer buffer shell; 10. Inner buffer shell; 11. Connecting plate; 12. Limiting post; 13. Cover plate. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0021] Example: See Figure 1-7 This utility model discloses a high-cushioning pulp molded packaging box, comprising an outer shell 1 and an inner shell 2. The inner shell 2 and outer shell 1 facilitate the installation of a cushioning mechanism. A cushioning mechanism is provided between the outer shell 1 and inner shell 2 to absorb impact forces. A cover plate 13 is installed at the top of the cushioning mechanism for aesthetic purposes. A limiting frame 3 is installed at the top of the outer shell 1 to facilitate the installation of a sliding plate 4. A sliding groove is formed on the inner wall of the limiting frame 3, and the sliding plate 4 is slidably connected within the limiting frame 3 to facilitate sealing the packaging box. Limiting holes are provided on both sides of the upper front end of the outer shell 1, and limiting posts 12 are installed at the front and rear ends of the inner wall of the inner shell 2 to facilitate the use of anti-slip pads. 5. Placement; and an anti-slip pad 5 is placed on the bottom surface of the inner shell 2 to prevent objects from moving randomly; the front and rear ends of the top of the anti-slip pad 5 are provided with limiting grooves that cooperate with the limiting post 12; multiple equidistant ventilation slots are provided longitudinally on the top surface of the anti-slip pad 5; and multiple equidistant anti-slip protrusions 6 are installed on the anti-slip pad 5 to prevent objects from slipping; both sides of the front end of the bottom of the sliding plate 4 are provided with limiting blocks 8 to facilitate the installation of limiting rods; a limiting rod is fixedly connected to the limiting block 8 to facilitate the cooperation with the sealing block 7; the limiting rod is inserted into the limiting hole of the outer shell 1, and a sealing block 7 is installed at the rear end of the limiting block 8 to facilitate the cooperation with the sliding plate 4 to seal the packaging box.
[0022] In this utility model, a sliding groove is provided inside the limiting frame 3, which facilitates the sliding of the sliding plate 4. The sliding plate 4 is inserted into the sliding groove. The buffer mechanism includes an outer buffer shell 9 and an inner buffer shell 10, which facilitate the connection of the connecting plate 11. The lower end of the outer buffer shell 9 has multiple equidistant first mounting slots, which facilitate the insertion of the third mounting slot. The upper end of the inner buffer shell 10 has multiple equidistant second mounting slots, which facilitate the insertion of the fourth mounting slot. Multiple equidistant connecting plates 11 are staggered between the outer buffer shell 9 and the inner buffer shell 10, which facilitate the connection of the outer buffer shell 9 and the inner buffer shell 10. The upper outer side of the connecting plate 11 has a third mounting slot, and the lower inner side of the connecting plate 11 has a fourth mounting slot. The fourth mounting slot is located at the far end of the third mounting slot. The third mounting slot is inserted into the first mounting slot, and the fourth mounting slot is inserted into the second mounting slot.
[0023] Working principle: When using this utility model, the opening method is to pull out the sliding plate 4, align the limiting groove and the limiting post 12, place the anti-slip pad 5 at the bottom of the packaging box, and then close the sliding plate 4. After closing, the limiting rod will be inserted into the limiting hole to prevent the object from falling out. The sealing block 7 will fill the gap between the limiting frame 3 and the cover plate 13. During transportation, the anti-slip protrusions 6 on the anti-slip pad 5 will work with the ventilation strip to ensure the object is placed and to prevent the object from changing quality due to lack of air circulation. When the packaging box is impacted, the outer buffer shell 9 will push the connecting plate 11 and the inner buffer shell 10 to deform and absorb the impact, preventing the internal objects from breaking. After the impact, the cross-sectional connecting plate 11 will push the outer buffer shell 9 and the inner buffer shell 10 to reset. If replacement is needed, simply remove the outer buffer shell 9 and the inner buffer shell 10 from the connecting plate 11 and insert a new outer buffer shell 9 and the inner buffer shell 10.
[0024] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A highly cushioning molded pulp packaging box, comprising an outer shell (1) and an inner shell (2), characterized in that: A buffer mechanism is provided between the outer shell (1) and the inner shell (2). A cover plate (13) is installed at the top of the buffer mechanism. A limit frame (3) is installed at the top of the outer shell (1). A sliding groove is provided on the inner wall of the limit frame (3). A sliding plate (4) is slidably connected inside the limit frame (3). Limit holes are provided on both sides of the upper front end of the outer shell (1). Limit posts (12) are installed at the front and rear ends of the inner wall of the inner shell (2). An anti-slip pad (5) is placed on the bottom surface of the inner shell (2).
2. The highly cushioning molded pulp packaging box according to claim 1, characterized in that: The anti-slip mat (5) has a limiting groove at the front and rear ends of the top surface that cooperates with the limiting post (12), and the top surface of the anti-slip mat (5) has multiple equidistant ventilation openings, and the anti-slip mat (5) has multiple equidistant anti-slip protrusions (6) installed on the anti-slip mat (5).
3. The highly cushioning molded pulp packaging box according to claim 1, characterized in that: Limiting blocks (8) are installed on both sides of the front end of the bottom of the sliding plate (4). A limiting rod is fixed on the limiting block (8). The limiting rod is inserted into the limiting hole of the outer shell (1). A sealing block (7) is provided at the rear end of the limiting block (8). The sealing block (7) is placed behind the upper end of the limiting rod and is installed on the bottom surface of the sliding plate (4).
4. A highly cushioning molded pulp packaging box according to claim 1, characterized in that: The buffer mechanism includes an outer buffer shell (9) and an inner buffer shell (10), and the lower end of the outer buffer shell (9) is provided with a plurality of equidistant first mounting slots.
5. A highly cushioning molded pulp packaging box according to claim 4, characterized in that: The inner buffer shell (10) has multiple equidistant second mounting slots at its upper end, and multiple equidistant connecting plates (11) are staggered between the outer buffer shell (9) and the inner buffer shell (10).
6. A highly cushioning molded pulp packaging box according to claim 5, characterized in that: The upper outer side of the connecting plate (11) is provided with a third mounting groove, and the lower inner side of the connecting plate (11) is provided with a fourth mounting groove. The third mounting groove is inserted into the first mounting groove, and the fourth mounting groove is inserted into the second mounting groove.