Packaging carton with buffer structure
By incorporating a cushioning structure inside the packaging carton, including a cushioning layer, a support layer, and shock-absorbing strips, the problems of traditional cushioning materials such as large space occupation, difficulty in recycling, and high cost are solved, achieving a highly efficient protective effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHAANXI POLY HUAYING PACKAGING CO LTD
- Filing Date
- 2025-04-09
- Publication Date
- 2026-04-24
AI Technical Summary
Traditional cushioning materials such as foam boards and bubble wrap have problems such as taking up a lot of space in packaging cartons, being difficult to recycle and dispose of, being costly, and not providing reliable protection.
Design a packaging carton with an internal cushioning structure, including a cushioning layer, a support layer, a foam layer, and shock-absorbing strips. The surface of the cushioning layer has wavy grooves, the support layer is honeycomb-shaped, the foam layer is polystyrene foam, and the shock-absorbing strips are I-shaped. The material deformation absorbs and disperses the impact force.
It effectively protects the contents from impact damage, extends the cushioning time, improves the protective effect, reduces the space occupied by materials, and simplifies recycling.
Smart Images

Figure CN224159729U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of packaging carton technology, and in particular to a packaging carton with a cushioning structure. Background Technology
[0002] Packaging cartons serve as an essential carrier in the transportation, storage, and sales of products, and are widely used across various industries. They not only provide physical protection for products but also, to some extent, enhance their appearance and convey product information. Whether it's electronic products, food and beverages, daily necessities, or handicrafts, packaging cartons are an indispensable component. In practical applications, packaging cartons typically have the following structural parts:
[0003] 1. The main body of the box is made of corrugated cardboard or other paper materials folded together to form a space to hold the product. The strength and thickness of the material directly affect the load-bearing capacity of the box.
[0004] 2. The lid and bottom of the box are sealed by folding or encapsulation to ensure the stability of the product inside the box, while facilitating the loading, unloading and storage of goods;
[0005] 3. Printed layer: This layer displays the product's brand logo, product name, specifications, instructions for use, and other information. It is an important medium for communication between the product and consumers.
[0006] Currently, various methods are employed in the industry to enhance the protective performance of packaging boxes. Some manufacturers add cushioning materials such as foam boards and bubble wrap inside the boxes, utilizing their soft and elastic properties to absorb and disperse external forces, reducing the impact on the products. Other manufacturers select high-strength corrugated cardboard and enhance the box's compressive strength by optimizing the shape and arrangement of the corrugations, such as using double-layer or multi-layer corrugated structures. Some manufacturers also employ special geometric shapes in the box design, such as prisms or pyramids, to alter the force transmission path and improve the protective effect on the products.
[0007] However, the above-described implementation methods still have the following problems. Regarding the cushioning structure, traditionally added cushioning materials such as foam boards and bubble wrap, although they can provide a certain cushioning effect, have problems such as large space occupation, difficulty in recycling and disposal, and high cost, making it difficult to provide sufficiently reliable protection. In response to this problem, this application proposes a solution: designing a packaging carton with an internal cushioning structure. The cushioning structure has designs such as I-beam and wave-shaped, which can undergo elastic deformation to absorb and disperse impact forces, reduce the impact on the internal items, and solve the drawbacks of traditional cushioning methods. Utility Model Content
[0008] To address the shortcomings of existing technologies, this utility model provides a packaging carton with a cushioning structure, which solves the problem that traditional cushioning materials such as foam boards and bubble wrap, although they can provide some cushioning, have problems such as large space occupation, difficulty in recycling and disposal, and high cost, and cannot provide sufficient and reliable protection.
[0009] To achieve the above objectives, this utility model provides the following technical solution:
[0010] A packaging carton with a cushioning structure includes a carton body and a bottom layer. The bottom layer includes a cushioning layer, a support layer, a foam layer, a load-bearing layer, and a set of shock-absorbing strips. A set of protective corners for maintaining stability is fixedly connected inside the carton body. All of the protective corners are designed as triangles.
[0011] Preferably, the buffer layer and the support layer are fixed by adhesive bonding, the surface of the buffer layer has a set of wavy grooves, the support layer is made of paper material, and the support layer has a honeycomb structure.
[0012] Preferably, the foam layer is made of polystyrene foam, the foam layer and the support layer are fixed by adhesive bonding, a set of damping strips are fixed between the foam layer and the support layer, and all the damping strips are of I-beam design, and the support layer is made of fiberboard.
[0013] Compared with the prior art, the present invention has the following beneficial effects:
[0014] 1. The foam layer is mainly used for cushioning and shock absorption. The foam material is soft and has good elasticity and compressibility. It can deform quickly when the item is impacted, absorbing a large amount of impact energy and effectively protecting the contents from collision damage. When the support layer is impacted, the honeycomb structure can absorb energy through its own slight deformation and air compression, playing a role in cushioning and shock absorption. The triangular corner protectors have stability and can maintain the relative stability of the structure when subjected to external forces, making them less prone to deformation. At the same time, the hypotenuse of the triangle can guide the impact force to be dispersed along a specific direction, and absorb energy through the compression and deformation of the material, providing good protection for the corners of the item.
[0015] 2. When the buffer layer is subjected to external force, the wavy undulations will be compressed in sequence, which prolongs the buffer time and increases the energy absorption effect. When the shock-absorbing strip’s I-shaped structure is subjected to external impact, the upper and lower horizontal parts and the middle vertical part can undergo elastic deformation to absorb and disperse the impact force and reduce the impact on internal items. Attached Figure Description
[0016] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.
[0017] Figure 1 This is an overall structural diagram of the present invention;
[0018] Figure 2 This is an exploded view of the overall structure of this utility model;
[0019] Figure 3 This is an exploded view of the bottom layer of this utility model;
[0020] Figure 4 This utility model Figure 3 Enlarged view of point A in the middle.
[0021] Illustration: 1. Carton body; 2. Bottom layer; 3. Protective corners; 4. Buffer layer; 5. Support layer; 6. Foam layer; 7. Shock-absorbing strips; 8. Load-bearing layer. Detailed Implementation
[0022] This application provides a packaging carton with a cushioning structure, which effectively solves the problems of traditional cushioning materials such as foam boards and bubble wrap, which, although they can play a certain cushioning role, have problems such as large space occupation, difficult recycling and disposal, and high cost, and cannot provide sufficient reliable protection. The packaging carton is designed with a cushioning structure inside, and the cushioning structure has designs such as I-shaped and corrugated, which can undergo elastic deformation, absorb and disperse impact force, reduce the impact on the contents, and solve the drawbacks of traditional cushioning methods.
[0023] Example
[0024] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the technical solution in this application embodiment effectively solves the technical problem that traditionally added cushioning materials such as foam boards and bubble wrap, although they can play a certain cushioning role, have problems such as large space occupation, difficult recycling and disposal, and high cost, making it difficult to provide sufficiently reliable protection. The overall idea is as follows:
[0025] To address the problems existing in the prior art, this utility model provides a packaging carton with a cushioning structure, including a carton body 1 and a bottom layer 2. The bottom layer 2 includes a cushioning layer 4, a support layer 5, a foam layer 6, a load-bearing layer 8, and a set of shock-absorbing strips 7. A set of protective corners 3 for maintaining stability is fixedly connected inside the carton body 1. All the protective corners 3 are triangular in design. The foam layer 6 is mainly used for cushioning and shock absorption. The foam material is soft and has good elasticity and compressibility. It can deform quickly when the item is impacted, absorbing a large amount of impact energy and effectively protecting the contents from collision damage. When the support layer 5 is impacted, the honeycomb structure can absorb energy through its own slight deformation and air compression, playing a role in cushioning and shock absorption. The triangles of the protective corners 3 have stability and can maintain the relative stability of the structure when subjected to external force, making it less prone to deformation. At the same time, the hypotenuse of the triangle can guide the impact force to be dispersed along a specific direction, and absorb energy through the compression and deformation of the material, providing good protection for the corners of the item.
[0026] The buffer layer 4 and the support layer 5 are fixed together by adhesive bonding. The surface of the buffer layer 4 has a set of wavy grooves. The support layer 5 is made of paper material and has a honeycomb structure. The foam layer 6 is made of polystyrene foam. The foam layer 6 and the support layer 5 are fixed together by adhesive bonding. A set of shock-absorbing strips 7 are fixed between the foam layer 6 and the load-bearing layer 8. All the shock-absorbing strips 7 are I-shaped. The load-bearing layer 8 is made of fiberboard. When the buffer layer 4 is subjected to external force, the wavy undulations will be compressed in sequence, which will prolong the buffer time and increase the energy absorption effect. When the I-shaped structure of the shock-absorbing strips 7 is subjected to external impact, the upper and lower horizontal parts and the middle vertical part can undergo elastic deformation to absorb and disperse the impact force and reduce the impact on the internal items.
[0027] Among them, the carton body 1: forms a space to accommodate the product, and together with the bottom layer 2, provides physical protection for the product. It is the main structural part of the packaging carton.
[0028] Bottom layer 2: Contains multiple components, providing bottom support for the carton, and together with the carton body 1, it forms the packaging space, playing the role of bearing and cushioning to protect the product;
[0029] Corner Protection 3: Fixed inside the carton body 1, its triangular design makes it highly stable, guides and disperses impact force, and absorbs energy through material deformation to protect the corners of the items;
[0030] Buffer layer 4: The surface has wavy grooves. When subjected to external force, the undulating parts of the grooves are compressed in sequence, which prolongs the buffer time, enhances the energy absorption effect, and protects the internal items.
[0031] Support layer 5: Made of paper material with a honeycomb structure, it absorbs energy through its own deformation and air compression when impacted, thus providing cushioning and support;
[0032] Foam layer 6: Soft in texture, with good elasticity and compressibility, it deforms quickly when the item is impacted, absorbing a large amount of impact energy and effectively protecting the contents;
[0033] Shock-absorbing strip 7: Located between foam layer 6 and load-bearing layer 8, its I-beam design allows it to elastically deform when subjected to external impact, absorbing and dispersing the impact force and reducing the impact on items;
[0034] Load-bearing layer 8: Made of fiberboard, it provides a stable load-bearing surface for products placed inside the carton, ensuring the stability of the products inside the carton.
[0035] Working principle:
[0036] The foam layer 6 is mainly used for cushioning and shock absorption. The foam material is soft and has good elasticity and compressibility. It can deform quickly when the item is impacted, absorbing a large amount of impact energy and effectively protecting the contents from collision damage. When the support layer 5 is impacted, the honeycomb structure can absorb energy through its own slight deformation and air compression, playing a role in cushioning and shock absorption. The triangle of the protective corner 3 has stability and can maintain the relative stability of the structure when subjected to external force, making it not easy to deform. At the same time, the hypotenuse of the triangle can guide the impact force to be dispersed along a specific direction, and absorb energy through the compression and deformation of the material, playing a good role in protecting the corners of the item. When the buffer layer 4 is subjected to external force, the wavy undulations will be compressed in sequence, prolonging the buffer time and increasing the energy absorption effect. When the shock-absorbing strip 7 is impacted by external force, the upper and lower horizontal parts and the middle vertical part can undergo elastic deformation to absorb and disperse the impact force, reducing the impact on the internal items.
[0037] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.
Claims
1. A packaging carton with a cushioning structure, comprising a carton body (1) and a bottom layer (2), characterized in that, The bottom layer (2) includes a buffer layer (4), a support layer (5), a foam layer (6), a load-bearing layer (8), and a set of shock-absorbing strips (7); a set of protective corners (3) for maintaining stability is fixedly connected inside the carton body (1), and all the shock-absorbing strips (7) are I-shaped designs.
2. A packaging carton with a cushioning structure as described in claim 1, characterized in that: All of the protective corners (3) are designed as triangles.
3. A packaging carton with a cushioning structure as described in claim 1, characterized in that: The buffer layer (4) and the support layer (5) are fixed by adhesive bonding.
4. A packaging carton with a cushioning structure as described in claim 1, characterized in that: The surface of the buffer layer (4) is provided with a set of wavy grooves.
5. A packaging carton with a cushioning structure as described in claim 1, characterized in that: The support layer (5) is made of paper material; The support layer (5) has a honeycomb structure.
6. A packaging carton with a cushioning structure as described in claim 1, characterized in that: The foam layer (6) is made of polystyrene foam; The foam layer (6) and the support layer (5) are fixed by adhesive bonding.
7. A packaging carton with a cushioning structure as described in claim 1, characterized in that: A set of the shock-absorbing strips (7) are fixed between the foam layer (6) and the load-bearing layer (8).
8. A packaging carton with a cushioning structure as described in claim 1, characterized in that: The supporting layer (8) is made of fiberboard.