Shockproof corrugated paperboard carton with buffer spacer

Abstract

This utility model relates to the field of corrugated paper technology, specifically a shockproof corrugated cardboard box with a cushioning layer. It includes a protective outer cardboard shell and an inner cardboard shell, with a cushioning layer between them. Shock-absorbing pads are installed at the four corners of the bottom of the outer cardboard shell. This utility model provides external protection and bottom cushioning for the cardboard box through the protective outer cardboard shell with shock-absorbing pads. The cushioning layer between the inner cardboard shell and the outer cardboard shell, with its honeycomb paper core layer and the cushioning foam filler within the honeycomb channels, effectively absorbs and disperses vibration energy. Connecting columns on both sides of some of the cushioning foam filler are inserted into the outer and inner cardboard shells, enhancing the overall structural stability. This results in a shockproof corrugated cardboard box with excellent shock absorption and structural strength, better protecting the contents.

Description

Technical Field

[0001] This utility model relates to the field of corrugated paper technology, specifically to a shockproof corrugated cardboard box with a cushioning layer. Background Technology

[0002] In today's packaging industry, corrugated cardboard boxes are widely used for the transportation and storage of various products due to their relatively low cost, ease of processing, and environmental friendliness. However, with the increasing demands for product transportation safety and the growing complexity of transportation environments, traditional corrugated cardboard boxes are gradually revealing many shortcomings in terms of shock resistance. Publication (Announcement) No.: CN216474263U discloses a corrugated cardboard and a box. This corrugated cardboard box mainly relies on the pleated structure of the corrugated cardboard itself to provide some cushioning, but this cushioning method is relatively simple and cannot effectively protect the contents when facing large impacts or complex vibration environments. For example, during long-distance transportation, goods may undergo multiple handling and bumps; a single corrugated structure cannot fully absorb and disperse this energy, making the goods easily damaged. Utility Model Content

[0003] The purpose of this invention is to provide a shockproof corrugated cardboard box with a cushioning layer to solve the problem of poor cushioning and shock absorption effect of existing corrugated cardboard boxes mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A shockproof corrugated cardboard box with a cushioning layer includes a protective outer cardboard shell and an inner cardboard shell, with a cushioning layer between the outer and inner cardboard shells, and shock-absorbing pads installed at the four bottom corners of the outer cardboard shell.

[0006] The buffer layer includes a honeycomb paper core layer, and buffer foam filler is provided in the honeycomb groove of the honeycomb paper core layer. A portion of the buffer foam filler is symmetrically provided with connecting columns on both sides, and the connecting columns on both sides are respectively inserted into the protective outer paper shell and the inner paper shell.

[0007] Preferably, the protective outer cardboard shell includes an outer cushioning cardboard, the surface of which is provided with a protective film layer. The outer cushioning cardboard provides external cushioning, and the protective film layer prevents the outer cushioning cardboard from being damaged by scratches, moisture, etc., thus extending the service life of the carton.

[0008] Preferably, the protective film layer is made of polyethylene film with a thickness of 50-150 μm. Polyethylene film has good flexibility and moisture resistance. This thickness range can ensure the protective effect without increasing the cost and weight too much.

[0009] Preferably, the inner paper shell includes an inner cushioning cardboard, the inner wall of which is provided with a waterproof coating. The inner cushioning cardboard provides internal cushioning, and the waterproof coating prevents the internal items from being damaged by moisture, thus providing reliable moisture protection for the items.

[0010] Preferably, the waterproof coating is a water-based polyurethane coating with a thickness of 10-40 μm. Water-based polyurethane coating has good waterproof performance and is environmentally friendly. This thickness can effectively prevent moisture without affecting the overall performance of the inner paper shell.

[0011] Preferably, the thickness of both the outer and inner buffer cardboard is greater than the length of the connecting column, ensuring that the cardboard plays a buffering role first when subjected to external force, avoiding direct damage to the connecting column and ensuring a stable connection between the buffer layer and the outer shell.

[0012] Preferably, the shock-absorbing pads are made of wear-resistant hard rubber with a thickness of 5-15mm. Wear-resistant hard rubber has good shock absorption effect and is durable. This thickness can effectively reduce the transmission of ground vibration and improve the shock resistance of the carton.

[0013] Preferably, the thickness of the honeycomb paper core layer is 5-20mm, and the thickness of the cushioning foam filler is the same as that of the honeycomb paper core layer. The two work together to cushion the impact. This thickness range can ensure the cushioning effect while taking into account the overall weight and cost of the carton.

[0014] Compared with existing technologies, the beneficial effects of this utility model are as follows: In this shockproof corrugated cardboard box with a buffer layer, the outer protective cardboard shell with shock-absorbing pads provides external protection and bottom cushioning for the cardboard box. The buffer layer between the inner cardboard shell and the outer protective cardboard shell, wherein the honeycomb paper core layer and the buffer foam filler in the honeycomb groove can effectively absorb and disperse vibration energy, and the connecting columns on both sides of some of the buffer foam filler are respectively inserted into the outer protective cardboard shell and the inner cardboard shell, which enhances the stability of the overall structure. This makes the shockproof corrugated cardboard box have excellent shockproof cushioning performance and structural strength, and can better protect the items inside the box. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are explained in detail together with the embodiments of the present invention, but do not constitute a limitation thereof.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the cross-sectional structure of the present invention;

[0018] Figure 3 This is a cross-sectional view of the buffer layer of this utility model;

[0019] 10. Protective outer cardboard shell; 11. Outer cushioning cardboard; 12. Protective film layer;

[0020] 20. Buffer layer; 21. Connecting column; 22. Honeycomb paper core layer; 23. Buffer foam filler;

[0021] 30. Inner paper shell; 31. Inner cushioning cardboard; 32. Waterproof coating;

[0022] 40. Shock-absorbing foot pads. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments and accompanying drawings. 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.

[0024] In the description of this utility model, it should be understood that the terms "center", "vertical", "horizontal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to facilitate the description of this utility model and to simplify the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] Shockproof corrugated cardboard boxes with cushioning layers, such as Figures 1-3As shown, the device includes a protective outer cardboard shell 10 and an inner cardboard shell 30. A buffer layer 20 is provided between the outer cardboard shell 10 and the inner cardboard shell 30. Shock-absorbing pads 40 are installed at the four corners of the bottom of the outer cardboard shell 10. The buffer layer 20 includes a honeycomb paper core layer 22. Buffer foam filler 23 is provided in the honeycomb grooves of the honeycomb paper core layer 22. Connecting posts 21 are symmetrically arranged on both sides of a portion of the buffer foam filler 23. The connecting posts 21 on both sides are respectively inserted into the outer cardboard shell 10 and the inner cardboard shell 30. The device is equipped with shock-absorbing pads. The protective outer cardboard shell 10 of the foot pad 40 provides external protection and bottom cushioning for the carton. The buffer layer 20 between the inner cardboard shell 30 and the protective outer cardboard shell 10, wherein the honeycomb paper core layer 22 and the buffer foam filler 23 in the honeycomb groove can effectively absorb and disperse vibration energy, and the connecting columns 21 on both sides of some of the buffer foam filler 23 are respectively inserted into the protective outer cardboard shell 10 and the inner cardboard shell 30, which enhances the stability of the overall structure. This makes the shockproof corrugated cardboard carton have excellent shockproof cushioning performance and structural strength, and can better protect the items inside the carton.

[0026] Furthermore, the protective outer cardboard shell 10 includes an outer cushioning cardboard 11, and a protective film layer 12 is provided on the surface of the outer cushioning cardboard 11. The protective film layer 12 is made of polyethylene film with a thickness of 50-150um, so that the protective outer cardboard shell 10 not only has a certain cushioning performance, but also can effectively resist the influence of external factors such as scratches and moisture through the protective film layer 12, extend the service life of the carton, and better protect the internal items.

[0027] Specifically, the inner paper shell 30 includes an inner cushioning cardboard 31, and a waterproof coating 32 is provided on the inner wall of the inner cushioning cardboard 31. The waterproof coating 32 is a water-based polyurethane coating with a thickness of 10-40um, which enables the inner paper shell 30 to effectively prevent the internal items from being damaged by the humid environment while having a cushioning function, thus providing reliable moisture protection for the items inside the box.

[0028] The thickness of both the outer cushioning cardboard 11 and the inner cushioning cardboard 31 is greater than the length of the connecting column 21, so that when the carton is subjected to external impact, the outer cushioning cardboard 11 and the inner cushioning cardboard 31 can fully play their cushioning role, preventing the connecting column 21 from being damaged due to directly bearing excessive pressure, ensuring the stability of the connection between the cushioning layer 20 and the protective outer paper shell 10 and inner paper shell 30, and thus ensuring the overall shockproof performance of the carton.

[0029] It is worth noting that the shock-absorbing foot pad 40 is made of wear-resistant hard rubber with a thickness of 5-15mm. This allows the shock-absorbing foot pad 40 to effectively reduce the vibration transmitted to the ground or contact surface during the placement or handling of the carton. At the same time, the wear-resistant properties ensure the durability of the foot pad, further improving the shockproof effect and overall stability of the carton.

[0030] In addition, the thickness of the honeycomb paper core layer 22 is 5-20mm, and the thickness of the cushioning foam filler 23 is the same as that of the honeycomb paper core layer 22, so that the honeycomb paper core layer 22 and the cushioning foam filler 23 can work together to play a cushioning role. The honeycomb paper core layer 22 provides basic structural support and a certain cushioning capacity, while the cushioning foam filler 23 further enhances the effect of absorbing and dispersing vibration energy, thereby effectively protecting the items inside the box from vibration damage.

[0031] The working principle of this shockproof corrugated cardboard box with cushioning layer:

[0032] First, the items to be packaged are placed inside the inner paper shell 30. The inner cushioning cardboard 31 and the waterproof coating 32 on its inner wall provide basic cushioning and moisture protection for the items. Next, since a cushioning partition 20 is provided between the protective outer paper shell 10 and the inner paper shell 30, the honeycomb paper core layer 22 and the cushioning foam filler 23 in the honeycomb groove can effectively absorb the vibration that may be generated during transportation. The connecting columns 21 on both sides of some of the cushioning foam filler 23 are respectively inserted into the protective outer paper shell 10 and the inner paper shell 30, ensuring the stability of the overall structure.

[0033] Then, the protective outer cardboard shell 10 is placed over the inner cardboard shell 30. The protective film layer 12 on the surface of the protective outer cardboard shell 10 can prevent the outer cushioning cardboard 11 from being scratched or damaged. Finally, the carton is placed in a suitable position. The shock-absorbing feet 40 at the bottom (made of wear-resistant hard rubber, 5-15mm thick) can reduce the impact of ground vibration on the carton. During transportation or storage, the various structures work together to ensure the safety of the items inside the box.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A shockproof corrugated cardboard box with a cushioning layer, characterized in that: It includes a protective outer paper shell (10) and an inner paper shell (30), with a buffer layer (20) provided between the protective outer paper shell (10) and the inner paper shell (30), and shock-absorbing pads (40) installed at the four top corners of the bottom of the protective outer paper shell (10). The buffer layer (20) includes a honeycomb paper core layer (22), and a buffer foam filler (23) is provided in the honeycomb groove of the honeycomb paper core layer (22). A portion of the buffer foam filler (23) is symmetrically provided with connecting columns (21) on both sides, and the connecting columns (21) on both sides are respectively inserted into the protective outer paper shell (10) and the inner paper shell (30).

2. The shockproof corrugated cardboard box with a cushioning layer according to claim 1, characterized in that: The protective outer cardboard shell (10) includes an outer cushioning cardboard (11), and a protective film layer (12) is provided on the surface of the outer cushioning cardboard (11).

3. The shockproof corrugated cardboard box with cushioning layer according to claim 2, characterized in that: The protective film layer (12) is made of polyethylene film with a thickness of 50-150um.

4. The shockproof corrugated cardboard box with a cushioning layer according to claim 2, characterized in that: The inner paper shell (30) includes an inner cushioning paperboard (31), and the inner wall of the inner cushioning paperboard (31) is provided with a waterproof coating (32).

5. The shockproof corrugated cardboard box with a cushioning layer according to claim 4, characterized in that: The waterproof coating (32) is a water-based polyurethane coating with a thickness of 10-40 μm.

6. The shockproof corrugated cardboard box with a cushioning layer according to claim 4, characterized in that: The thickness of both the outer buffer cardboard (11) and the inner buffer cardboard (31) is greater than the length of the connecting column (21).

7. The shockproof corrugated cardboard box with a cushioning layer according to claim 1, characterized in that: The shock-absorbing foot pad (40) is made of wear-resistant hard rubber and has a thickness of 5-15mm.

8. The shockproof corrugated cardboard box with a cushioning layer according to claim 1, characterized in that: The thickness of the honeycomb paper core layer (22) is 5-20 mm, and the thickness of the buffer foam filler (23) is the same as that of the honeycomb paper core layer (22).

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