A new type of high-elasticity double-corrugated paper core corrugated paper board

Abstract

The utility model relates to the technical field of packing material, concretely to a novel high elasticity double corrugated paper core's corrugated paperboard, including two surface layer boards of symmetrical settings, two paper core bodies are equipped between two surface layer boards, two paper core bodies are parallelly arranged, the paper core body is located both sides of the outside wall of inlaying and is equipped with a plurality of equal interval strip semicircular holes, the utility model discloses strip semicircular hole is equipped in the inlaying side of two parallel paper core bodies, and the strip circular hole is combined to form and is built -in elastic filling pad, and the guiding assembly is set up simultaneously at both ends, and the overall elasticity and buffer performance of corrugated paperboard are effectively promoted. Elastic filling pad can provide elastic support and buffer when being stressed, and guiding assembly can ensure that two surface layer boards maintain stable relative position in the stress deformation and recovery process, avoid structural misplacement, thereby making corrugated paperboard can better rebound after bearing pressure, and the stability and impact resistance of structure are enhanced.

Description

Technical Field

[0001] This utility model relates to the field of packaging materials technology, specifically to a novel corrugated cardboard with a high-elasticity double-corrugated core. Background Technology

[0002] Corrugated cardboard, as an environmentally friendly material widely used in the packaging industry, plays an important role in food, electronics, and logistics due to its lightweight, low cost, and ease of processing. Traditional corrugated cardboard is usually made of single or multiple layers of corrugated core bonded to a surface liner, and its cushioning performance mainly relies on the deformation of the corrugated core's corrugated structure under stress. However, with the increasing demands for packaging protection in modern logistics and transportation, traditional corrugated cardboard has gradually revealed problems such as insufficient elasticity and limited cushioning effect.

[0003] In practical use, when traditional corrugated cardboard is subjected to external impact or compression, the corrugated core is prone to irreversible deformation, resulting in poor resilience and difficulty in providing continuous and effective protection for the contents. Especially when transporting high-end products such as precision instruments and fragile items, the cushioning effect of a single corrugated structure is often insufficient to meet the protection requirements, and the items are easily damaged by vibration and collision.

[0004] In addition, although some improved corrugated cardboards have attempted to improve cushioning performance by increasing the number of corrugated layers, they have not made targeted optimizations to the structure of the corrugated core. The elastic filling structure design is unreasonable, and stress concentration is prone to occur when subjected to force. Furthermore, the lack of an effective guiding and limiting structure makes it easy for structural misalignment to occur during deformation recovery, affecting the reusability.

[0005] In view of this, we propose a new type of corrugated board with a high-elasticity double-corrugated core. Utility Model Content

[0006] To overcome the above deficiencies, this utility model provides a novel corrugated cardboard with a high-elasticity double-corrugated core.

[0007] The technical solution of this utility model is: A novel high-elasticity double-wall corrugated cardboard includes two symmetrically arranged surface panels and two cardboard cores positioned between them. The two cardboard cores are arranged parallel to each other. Each core has several equally spaced semi-circular slotted holes on its outer wall on the side where they are joined. Two adjacent semi-circular slotted holes on the two cores form a circular slotted hole. Each circular slotted hole contains an elastic filling pad. A guide assembly is located at each end of the two surface panels. By creating semi-circular slotted holes on the joined sides of the two parallel cores, forming a circular slotted hole with an internal elastic filling pad, and simultaneously providing guide assemblies at both ends, the overall elasticity and cushioning performance of the corrugated cardboard are effectively improved. The elastic filling pad provides elastic support and cushioning under stress, while the guide assembly ensures that the two surface panels maintain a stable relative position during deformation and recovery under stress, preventing structural misalignment. This allows the corrugated cardboard to rebound better after being subjected to pressure, enhancing structural stability and impact resistance.

[0008] As a preferred technical solution, each surface plate has a hollow mounting slot, and several equally spaced corrugated plates are installed in each hollow mounting slot. The corrugated plates possess a certain degree of elasticity when compressed, thus increasing the overall elasticity of the device.

[0009] As a preferred technical solution, the surface plate has a plurality of equally spaced triangular protrusions integrally formed on the side near the paper core body. The paper core body is wavy, and the triangular protrusions engage with the paper core body. This increases the contact area and connection strength between the surface plate and the paper core body, effectively preventing relative sliding or separation between the two under stress.

[0010] As a preferred technical solution, a sponge layer is provided between the surface board and the paper core body, and the sponge layer is bonded and fixed to both the surface board and the paper core body. The sponge layer not only acts as a buffer and shock absorber, absorbing the impact force during transmission, but also fills the tiny gaps between the surface board and the paper core body, making the connection between them tighter. At the same time, the sponge layer has a certain degree of elasticity, which, together with the paper core body and elastic filling pad, further enhances the overall elasticity and impact resistance of the corrugated cardboard, reducing damage to the internal structure of the cardboard from external forces.

[0011] As a preferred technical solution, the diameter of the elastic filling pad is larger than the diameter of the strip-shaped circular hole, and the two paper core bodies are separated. This design allows the elastic filling pad to be in a slightly compressed state in the initial state, forming a pre-tightening force. When the corrugated cardboard is subjected to external pressure, the elastic filling pad can provide a greater rebound force, significantly enhancing the cushioning effect.

[0012] As a preferred technical solution, the guiding assembly includes a hollow outer jacket plate and a hollow telescopic plate, which are respectively fixedly connected to two surface plates. Its main function is to provide guidance for the relative movement of the two surface plates, ensuring that when the corrugated cardboard is deformed under stress, the two surface plates can move smoothly along a preset direction, preventing lateral offset or skewing.

[0013] As a preferred technical solution, a spring is provided between the hollow outer jacket and the hollow telescopic plate, with both ends of the spring fixedly connected to the bottom inner wall of the hollow outer jacket and the top inner wall of the hollow telescopic plate, respectively. When the corrugated cardboard is subjected to pressure, the spring is compressed and stores elastic potential energy. After the external force disappears, the spring releases the potential energy to push the two outer jackets back to their original positions, further enhancing the resilience of the corrugated cardboard.

[0014] Compared with the prior art, the beneficial effects of this utility model are: This invention improves the overall elasticity and cushioning performance of corrugated cardboard by creating semi-circular holes on the bonding sides of two parallel paper core bodies, forming a circular hole with an internal elastic filler, and adding guide components at both ends. The elastic filler provides elastic support and cushioning under stress, while the guide components ensure that the two surface panels maintain a stable relative position during deformation and recovery, preventing structural misalignment. This allows the corrugated cardboard to rebound better after being subjected to pressure, enhancing structural stability and impact resistance. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 In this utility model Figure 1 Enlarged view of point A; Figure 3 This is a schematic diagram of the internal structure of the guide component in this utility model; The meanings of the labels in the diagram are as follows: 1. Surface plate; 10. Hollow mounting groove; 2. Triangular protrusion; 3. Corrugated plate; 4. Sponge layer; 5. Paper core body; 6. Strip-shaped round hole; 60. Elastic filling pad; 7. Guide assembly; 70. Hollow outer plate; 71. Hollow telescopic plate; 72. Spring. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the 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.

[0017] Please see Figures 1-3 This utility model provides a technical solution: A novel high-elasticity double-corrugated cardboard with a core includes two symmetrically arranged surface panels 1 and two core bodies 5 positioned between them. The two core bodies 5 are parallel to each other, and each core body 5 has several equally spaced semi-circular slotted holes on its outer wall on the side where they are joined. Two adjacent semi-circular slotted holes on the two core bodies 5 form a circular slot 6. Each circular slot 6 contains an elastic filling pad 60. A guide component 7 is located at each end of the two surface panels 1. By creating semi-circular slotted holes on the joined sides of the two parallel core bodies 5, forming a circular slot 6 with an internal elastic filling pad 60, and simultaneously providing guide components 7 at both ends, the overall elasticity and cushioning performance of the corrugated cardboard are effectively improved. The elastic filling pad 60 provides elastic support and cushioning under stress, while the guide components 7 ensure that the two surface panels 1 maintain a stable relative position during deformation and recovery under stress, preventing structural misalignment. This allows the corrugated cardboard to better rebound after being subjected to pressure, enhancing structural stability and impact resistance.

[0018] In a preferred embodiment, each surface plate 1 has a hollow mounting groove 10, and several equally spaced corrugated plates 3 are installed in the hollow mounting groove 10. The corrugated plates 3 possess a certain elasticity when compressed, thus increasing the overall elasticity of the device.

[0019] In a preferred embodiment, the surface plate 1 has a plurality of equally spaced triangular protrusions 2 integrally formed on the side near the paper core body 5. The paper core body 5 is wavy, and the triangular protrusions 2 engage with the paper core body 5. This increases the contact area and connection strength between the surface plate 1 and the paper core body 5, effectively preventing relative sliding or separation between the two when subjected to force.

[0020] In a preferred embodiment, a sponge layer 4 is provided between the surface board 1 and the paper core body 5, and the sponge layer 4 is bonded and fixed to both the surface board 1 and the paper core body 5. The sponge layer 4 not only serves to cushion and absorb shock during transmission, but also fills the tiny gaps between the surface board 1 and the paper core body 5, making the connection between the two tighter. At the same time, the sponge layer 4 has a certain degree of elasticity, which can work together with the paper core body 5 and the elastic filling pad 60 to further improve the overall elasticity and impact resistance of the corrugated cardboard, and reduce damage to the internal structure of the cardboard from external forces.

[0021] In a preferred embodiment, the diameter of the elastic padding is larger than the diameter of the strip-shaped circular hole 6, and the two paper core bodies 5 are separated. This design allows the elastic padding to be under slight pressure in the initial state, forming a pre-tightening force. When the corrugated cardboard is subjected to external pressure, the elastic padding can provide a greater rebound force, significantly enhancing the cushioning effect.

[0022] In a preferred embodiment, the guide assembly 7 includes a hollow outer jacket plate 70 and a hollow telescopic plate 71, which are fixedly connected to the two surface plates 1 respectively. Its main function is to provide guidance for the relative movement of the two surface plates 1, ensuring that the two surface plates 1 can move smoothly along a preset direction when the corrugated cardboard is deformed by force, preventing lateral offset or skewing.

[0023] In a preferred embodiment, a spring 72 is provided between the hollow outer jacket 70 and the hollow telescopic plate 71. The two ends of the spring 72 are fixedly connected to the bottom inner wall of the hollow outer jacket 70 and the top inner wall of the hollow telescopic plate 71, respectively. When the corrugated cardboard is subjected to pressure, the spring 72 is compressed and stores elastic potential energy. After the external force disappears, the spring 72 releases its potential energy and pushes the two outer plates 1 back to their original positions, further enhancing the resilience of the corrugated cardboard.

[0024] This novel high-elasticity double-corrugated cardboard utilizes a multi-layered structure to achieve high elasticity and cushioning performance during use. When the cardboard is subjected to external pressure, the pressure is first transmitted to the surface layer 1. The corrugated plate 3 within the surface layer 1 deforms and utilizes its elasticity to initially cushion the external force. Simultaneously, the interlocking structure between the triangular protrusion 2 on one side of the surface layer 1 and the corrugated cardboard core 5 evenly transmits the force to the cardboard core 5. After being subjected to force, the two cardboard cores 5 move closer together. At this point, the elastic filling pad 60 within the strip-shaped circular hole 6 is further compressed, providing reverse support through its own elasticity and absorbing most of the impact force.

[0025] Meanwhile, the sponge layer 4 between the surface plate 1 and the paper core body 5 assists in buffering through compression deformation and fills the gaps to ensure stable force transmission. In the guide components 7 at both ends, the hollow telescopic plate 71 retracts into the hollow outer plate 70, and the internal spring 72 is compressed and stores elastic potential energy, which not only ensures that the surface plate 1 moves smoothly along the preset direction to avoid misalignment, but also enhances the overall rebound capability through the elastic characteristics of the spring 72.

[0026] When the external pressure disappears, the elastic filler 60, corrugated board 3, sponge layer 4, and spring 72 simultaneously release their stored elastic potential energy, pushing the paper core body 5 and surface board 1 back to their initial state, achieving efficient rebound. Throughout the process, the various structures work together to form a multi-level buffering and rebound system, significantly improving the elasticity, cushioning performance, and structural stability of the corrugated cardboard.

[0027] 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 novel high-elasticity double-walled corrugated cardboard, characterized in that: The device includes two symmetrically arranged surface plates (1), and two paper core bodies (5) are provided between the two surface plates (1). The two paper core bodies (5) are arranged in parallel. Each paper core body (5) has several equally spaced strip-shaped semi-circular holes on the outer wall of the side where the two are attached. Two adjacent strip-shaped semi-circular holes on the two paper core bodies (5) form a strip-shaped circular hole (6). Each strip-shaped circular hole (6) is provided with an elastic filling pad (60). A guide component (7) is provided at both ends between the two surface plates (1).

2. The novel high-elasticity double-corrugated paperboard as described in claim 1, characterized in that: Each surface plate (1) has a hollow mounting groove (10) and a number of equally spaced corrugated plates (3) are installed in the hollow mounting groove (10).

3. The novel high-elasticity double-corrugated paperboard as described in claim 2, characterized in that: The surface plate (1) has a number of equally spaced triangular protrusions (2) integrally formed on the side near the paper core body (5). The paper core body (5) is wavy, and the triangular protrusions (2) engage with the paper core body (5).

4. The novel high-elasticity double-corrugated paperboard as described in claim 3, characterized in that: A sponge layer (4) is provided between the surface plate (1) and the paper core body (5), and the sponge layer (4) is bonded and fixed to both the surface plate (1) and the paper core body (5).

5. The novel high-elasticity double-corrugated paperboard as described in claim 4, characterized in that: The diameter of the elastic filling pad (60) is larger than the diameter of the strip-shaped circular hole (6), and the two paper core bodies (5) are separated.

6. The novel high-elasticity double-corrugated paperboard as described in claim 5, characterized in that: The guide assembly (7) includes a hollow outer plate (70) and a hollow telescopic plate (71), which are fixedly connected to two surface plates (1) respectively.

7. The novel high-elasticity double-corrugated paperboard as described in claim 6, characterized in that: A spring (72) is provided between the hollow outer plate (70) and the hollow telescopic plate (71), and the two ends of the spring (72) are fixedly connected to the bottom inner wall of the hollow outer plate (70) and the top inner wall of the hollow telescopic plate (71), respectively.

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