A paperboard packaging box having airbag cushioning interlayer

By introducing airbag cushioning components and a double-layer corrugated cardboard structure into cardboard boxes, the problem of insufficient cushioning in traditional cardboard boxes is solved, achieving effective protection of fragile items and efficient use of resources.

CN224492171UActive Publication Date: 2026-07-14ZHEJIANG XIKAI IND & TRADE CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ZHEJIANG XIKAI IND & TRADE CO LTD
Filing Date
2025-08-29
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

Traditional cardboard packaging boxes rely on the corrugated cardboard structure itself for cushioning, which cannot effectively disperse the stress of fragile and delicate items. The cushioning strength is difficult to adapt flexibly, and after repeated use, they are prone to deformation, moisture, and loss of protective ability, increasing packaging costs and wasting resources.

Method used

It adopts an airbag cushioning component and a double-layer corrugated cardboard structure. The airbag cushioning component is made of TPU composite film material and filled with inert gas. It is combined with elastic connecting blocks and slots, along with a honeycomb cardboard layer and a waterproof layer, to form a multi-layer cushioning protection.

Benefits of technology

It effectively disperses stress on items, adapts to different cushioning needs, extends service life, reduces resource waste, and improves resistance to deformation and moisture.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a paperboard packing box with air bag buffer interlayer belongs to paperboard packing box technical field, and its technical scheme main points include box and lid, the lid is used in cooperation with box, the inside of box is connected with inner buffer unit, and the bottom of box inside is placed with foamed support block, and inner buffer unit is connected with foamed support block, inner buffer unit includes a plurality of air bag buffer subassembly, and the inside of box is connected with the inner wall of a plurality of air bag buffer subassembly's outside, air bag buffer subassembly whole is rectangular and is arranged in the inside of box, replaces single corrugated structure through air bag buffer subassembly, when facing fragile, precision article, can effectively disperse stress, avoid the article damage in the inside of box, and air bag can adjust air pressure, can adapt to different article buffer demand, and through the combination of elastic connecting block and card slot, connecting plate and magic tape, make inner buffer unit and box, foamed article block close bite, avoid in transit displacement.
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Description

Technical Field

[0001] This utility model relates to the field of cardboard packaging box technology, and in particular to a cardboard packaging box with an airbag cushioning layer. Background Technology

[0002] Cardboard boxes are containers made primarily of corrugated cardboard, produced through processes such as die-cutting, creasing, nailing, or gluing. They are mainly used for packaging and storing goods.

[0003] In the field of logistics transportation and goods storage, traditional cardboard boxes are commonly used as carrier containers. Traditional cardboard boxes rely on the corrugated cardboard structure itself for cushioning. When faced with fragile or delicate items, they cannot effectively disperse stress due to impact or vibration, which can easily lead to damage to the internal items. Moreover, different items require different cushioning strengths, and traditional structures are difficult to adapt flexibly. After repeated use, the cardboard structure is prone to loss of protective ability due to cushioning deformation, moisture, etc., which increases packaging costs and wastes resources.

[0004] To address this, a cardboard packaging box with an air-cushioned interlayer is proposed. Utility Model Content

[0005] The purpose of this utility model is to provide a cardboard packaging box with an air-cushioned interlayer, which can solve the problems of existing traditional cardboard packaging boxes that rely on the corrugated cardboard structure itself for cushioning. When facing fragile or delicate items, they cannot effectively disperse stress under impact or vibration, which can easily lead to damage to the internal items. In addition, different items require different cushioning strengths, and traditional structures are difficult to adapt flexibly. Furthermore, after repeated use, the cardboard structure is prone to deformation due to cushioning and moisture, which can lead to loss of protective ability, increasing packaging costs and wasting resources.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a cardboard packaging box with an airbag cushioning layer, comprising a box body and a box lid, wherein the box lid is used in conjunction with the box body, an inner cushioning unit is snapped into the inside of the box body, and a foam support block is placed at the bottom of the inside of the box body, wherein the inner cushioning unit is snapped into the foam support block.

[0007] The inner buffer unit includes several airbag buffer components. The outer sides of the airbag buffer components are connected to the inner wall of the box. The airbag buffer components are rectangular in shape and are arranged inside the box. The foam support block is located between the airbag buffer components. Both ends of the two airbag buffer components on both sides are provided with elastic connecting blocks. Both ends of the two airbag buffer components on the front and rear sides are provided with slots. The elastic connecting blocks are engaged inside the slots.

[0008] Preferably, the airbag cushioning assembly includes an airbag cushioning layer, and two connecting plates are attached to the surface of the airbag cushioning layer by Velcro.

[0009] Preferably, the inner connecting plate is connected to the inner wall of the box, and the outer connecting plate is connected to the foam support block.

[0010] Preferably, the airbag of the airbag buffer layer is made of TPU composite film material, the airbag buffer layer is filled with an inert gas with adjustable pressure, and the airbag buffer layer is provided with an inflation valve.

[0011] Preferably, a fixing block is provided on the side of the inner connecting plate near the inner wall of the box, and the surface of the fixing block is in contact with the inner wall of the box; a snap-fit ​​block is provided on the side of the outer connecting plate away from the airbag buffer, and the surface of the snap-fit ​​block is connected to the inner wall of the foam support block.

[0012] Preferably, both the box body and the box lid are made of double-layer high-strength corrugated cardboard, and a honeycomb cardboard layer is provided between the two high-strength corrugated cardboard layers, with a waterproof layer provided on the surface of the outer high-strength cardboard.

[0013] Preferably, the waterproof layer is composed of kraft paper with a waterproof coating on its surface.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This application replaces the single corrugated structure with an airbag cushioning component, which can effectively disperse stress when facing fragile and delicate items, and prevent damage to the items inside the box. The airbag has adjustable air pressure to adapt to the cushioning needs of different items. The combination of elastic connecting blocks and slots, connecting plates and Velcro allows the inner cushioning unit to be tightly engaged with the box and foam storage blocks, preventing displacement during transportation.

[0016] 2. This application enhances the deformation resistance and moisture resistance of the box lid through a composite structure of double-layer corrugated cardboard, honeycomb cardboard layer and waterproof layer, thus extending its service life. Attached Figure Description

[0017] Figure 1 This is an overall structural diagram of the cardboard packaging box with an airbag cushioning layer according to this utility model;

[0018] Figure 2 This is a schematic diagram of the internal buffer unit of this utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the airbag cushioning assembly of this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the box body of this utility model.

[0021] In the diagram, 1 is the box body; 2 is the box lid; 3 is the inner buffer unit; 31 is the airbag buffer assembly; 311 is the airbag buffer layer; 312 is the connecting plate; 32 is the elastic connecting block; 33 is the slot; 4 is the foam support block; 5 is the fixing block; 6 is the snap-fit ​​block; 7 is the honeycomb cardboard layer; and 8 is the waterproof layer. Detailed Implementation

[0022] 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.

[0023] Please see Figure 1-4 The present invention provides the following technical solution:

[0024] A cardboard packaging box with an airbag cushioning interlayer includes a box body 1 and a box lid 2. The box lid 2 is used in conjunction with the box body 1. An inner cushioning unit 3 is snapped into the inside of the box body 1, and a foam support block 4 is placed at the bottom inside the box body 1. The inner cushioning unit 3 is snapped into the foam support block 4.

[0025] The inner buffer unit 3 includes several airbag buffer components 31. The outer sides of the several airbag buffer components 31 are connected to the inner wall of the box 1. The airbag buffer components 31 are rectangular in shape and are set inside the box 1. The foam support block 4 is located between the several airbag buffer components 31. Both ends of the two airbag buffer components 31 on both sides are provided with elastic connecting blocks 32. Both ends of the two airbag buffer components 31 on the front and rear sides are provided with slots 33. The elastic connecting blocks 32 are engaged inside the slots 33.

[0026] In this embodiment: the lid 2 and the box body 1 are used to seal the packaging. The inner buffer unit 3 is inserted into the slot 33 through the elastic connecting block 32 to achieve modular splicing. The foamed storage block fills the gap of the airbag assembly and is connected to the inner buffer unit 3 to fix the items. The airbag buffer assembly 31 is attached to the inner wall of the box body 1 to form an outer protective layer plus an inner buffer structure. When facing fragile and delicate items, it can effectively disperse stress and avoid damage to the items inside the box body 1.

[0027] Specifically, such as Figure 3 As shown, the airbag cushioning assembly 31 includes an airbag cushioning layer 311, and two connecting plates 312 are attached to the surface of the airbag cushioning layer 311 by Velcro.

[0028] Specifically, such as Figure 3 As shown, the inner connecting plate 312 is connected to the inner wall of the box 1, and the outer connecting plate 312 is connected to the foam support block 4.

[0029] Specifically, such as Figure 3 As shown, the airbag of the airbag buffer layer 311 is made of TPU composite film material. The airbag buffer layer 311 is filled with an inert gas with adjustable pressure, and an inflation valve is provided on the airbag buffer layer 311.

[0030] In this embodiment: by setting up an airbag buffer assembly 31, the airbag buffer layer 311 is bonded to the connecting plate 312 by Velcro. The inner connecting plate 312 fixes the inner wall of the box 1, and the outer connecting plate 312 connects the foamed storage block. By using the connecting plate 312 as a bridge, the force on the airbag buffer layer 311 can be dispersed, avoiding local stress concentration that could cause the airbag to rupture. In addition, the double connecting plate 312 design allows the airbag layer to connect the box 1 and the storage block at the same time, enhancing the overall buffer linkage.

[0031] Specifically, such as Figure 2 As shown, a fixing block 5 is provided on the side of the inner connecting plate 312 near the inner wall of the box 1, and the surface of the fixing block 5 is in contact with the inner wall of the box 1. A snap-fit ​​block 6 is provided on the side of the outer connecting plate 312 away from the airbag buffer, and the surface of the snap-fit ​​block 6 is connected to the inner wall of the foam support block 4.

[0032] In this embodiment: by setting the fixing block 5 and the snap-fit ​​block 6, the fixing block 5 of the inner connecting plate 312 is embedded into the inner wall of the box 1 to increase the contact area, and the snap-fit ​​block 6 of the outer connecting plate 312 is inserted into the preset slot on the foamed storage block and fixed by mechanical interlocking, which can enhance the stability of the airbag buffer assembly 31 during installation.

[0033] Specifically, such as Figure 4 As shown, both the box body 1 and the box lid 2 are made of double-layer high-strength corrugated cardboard, and a honeycomb cardboard layer 7 is provided between the two high-strength corrugated cardboard layers. A waterproof layer 8 is provided on the surface of the outer high-strength cardboard.

[0034] Specifically, such as Figure 4 As shown, the waterproof layer 8 is made of kraft paper with a waterproof coating on its surface.

[0035] In this embodiment: a double-layer high-strength corrugated cardboard provides basic support, while the middle honeycomb cardboard layer 7 disperses and absorbs external impact forces; a waterproof layer 8 covers the outer corrugations, preventing the intrusion of humid air; the honeycomb cardboard layer 7 disperses stress through its hexagonal structure, preventing external forces from being directly transmitted to the interior, and the sandwich structure formed by the double-layer corrugated cardboard and the honeycomb cardboard layer has several times the deformation resistance of the traditional single-layer corrugated cardboard. At the same time, the waterproof layer 8, made of kraft paper with a waterproof coating, covers the outside of the box 1, which can isolate moisture and solve the problem of traditional cardboard softening and instability when exposed to moisture, making it suitable for transportation in humid environments.

[0036] Working principle: When using the packaging box, first adjust the airbag cushioning assembly 31 according to the characteristics of the items to be packaged: inert gas is injected into the airbag cushioning layer 311 through the inflation valve. Low pressure is suitable for fragile items such as glass and electronic components, while high pressure is suitable for items requiring strong support such as small mechanical parts. Then, the elastic connecting block 32 is engaged in the slot 33, so that multiple airbag cushioning assemblies 31 are combined into a rectangular structure to form a complete cushioning frame. Then, the fixing block 5 is inserted into the interior of the box 1 along the preset slot on the inner wall of the box 1. Finally, the foam support block 4 is placed in the cushioning frame and secured by the locking block. 6 is connected to the foam support block 4 and the inner connecting plate 312. The foam support block 4 can be simply cut according to the shape of the item to ensure that it matches the bottom contour of the item. Then the box lid 2 is closed and sealed by the buckle or tape on the box body 1 to ensure that the box lid 2 fits tightly with the box body 1. During transportation, when the box body 1 is impacted or vibrated: the outer double-layer corrugated cardboard and honeycomb cardboard layer 7 first absorb part of the impact force and reduce the energy transmitted to the inside. The airbag buffer layer 311 further disperses the stress through gas compression deformation to avoid the impact force acting directly on the item.

[0037] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements 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 cardboard packaging box with an air-cushioned interlayer, comprising a box body (1) and a box lid (2), characterized in that: The lid (2) is used in conjunction with the body (1). An inner buffer unit (3) is snapped into the inside of the body (1), and a foam support block (4) is placed at the bottom inside the body (1). The inner buffer unit (3) is snapped into the foam support block (4). The inner buffer unit (3) includes several airbag buffer components (31). The outer sides of the several airbag buffer components (31) are connected to the inner wall of the box (1). The airbag buffer components (31) are rectangular in shape and are arranged inside the box (1). The foam support block (4) is located between the several airbag buffer components (31). Both ends of the two airbag buffer components (31) on both sides are provided with elastic connecting blocks (32). Both ends of the two airbag buffer components (31) on the front and rear sides are provided with slots (33). The elastic connecting blocks (32) are engaged inside the slots (33).

2. A cardboard packaging box with an air-cushioned cushioning layer according to claim 1, characterized in that: The airbag cushioning assembly (31) includes an airbag cushioning layer (311), and two connecting plates (312) are attached to the surface of the airbag cushioning layer (311) by Velcro.

3. A cardboard packaging box with an air-cushioned cushioning layer according to claim 2, characterized in that: The inner connecting plate (312) is connected to the inner wall of the box (1), and the outer connecting plate (312) is connected to the foam support block (4).

4. A cardboard packaging box with an air-cushioned cushioning layer according to claim 2, characterized in that: The airbag of the airbag buffer layer (311) is made of TPU composite film material. The airbag buffer layer (311) is filled with an inert gas with adjustable pressure, and an inflation valve is provided on the airbag buffer layer (311).

5. A cardboard packaging box with an air-cushioned cushioning layer according to claim 2, characterized in that: A fixing block (5) is provided on the side of the inner connecting plate (312) near the inner wall of the box (1), and the surface of the fixing block (5) is in contact with the inner wall of the box (1). A snap-fit ​​block (6) is provided on the side of the outer connecting plate (312) away from the airbag buffer, and the surface of the snap-fit ​​block (6) is connected to the inner wall of the foam support block (4).

6. A cardboard packaging box with an air-cushioned cushioning layer according to claim 1, characterized in that: The box body (1) and the box cover (2) are both made of double-layer high-strength corrugated cardboard, and a honeycomb cardboard layer (7) is provided between the two high-strength corrugated cardboards. A waterproof layer (8) is provided on the surface of the outer high-strength cardboard.

7. A cardboard packaging box with an air-cushioned cushioning layer according to claim 6, characterized in that: The waterproof layer (8) is composed of kraft paper with a waterproof coating on its surface.