Compression-resistant corrugated paper with double corrugated paper cores
By placing paper tubes at the troughs and crests of the corrugated paper core and attaching adhesive strips between the corrugated paper cores, combined with a compression frame and reinforcing plate, the problem of insufficient interlayer bonding strength of the corrugated paper core is solved, achieving higher compression resistance and overall stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-25
- Publication Date
- 2026-03-03
AI Technical Summary
Existing double-walled paper cores have insufficient interlayer bonding strength when facing complex or extreme external pressures, leading to interlayer separation or deformation and affecting the overall protective performance of packaging materials.
Paper tubes are placed at the troughs and crests of the corrugated paper core, and adhesive strips are pasted between the corrugated paper cores. Combined with compression frames and reinforcing plates, the interlayer connection strength is enhanced, and additional support is provided through the paper tubes to enhance the overall structural stability.
It significantly improves the bonding strength between corrugated paper core layers, reduces interlayer separation or deformation, ensures the stability and reliability of packaging materials during transportation and stacking, and enhances compression resistance.
Smart Images

Figure CN223963762U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of packaging materials, and in particular to a compression-resistant double-corrugated paper core corrugated paper. Background Technology
[0002] Compression-resistant double-wall corrugated paper is a high-performance packaging material specifically designed to provide enhanced protection, particularly in applications requiring high compressive strength. It belongs to the field of packaging materials and technology and is widely used in logistics, transportation, and warehousing industries.
[0003] Existing double-wall corrugated cores are made of two layers of corrugated cardboard bonded together with a surface layer. While this structure provides good cushioning and compression resistance, the bonding strength between the layers of the double-wall corrugated core is often insufficient to maintain overall stability when faced with complex or extreme external pressures. This can lead to interlayer separation or deformation during transportation, handling, or stacking, thus affecting the overall protective performance of the packaging material.
[0004] To address the aforementioned issues, it is necessary to design a compression-resistant double-wall corrugated paper core that can improve the interlayer structural stability of the double-wall corrugated paper core. Utility Model Content
[0005] In order to overcome the shortcomings of insufficient bonding strength between layers of double corrugated paper core to maintain overall stability, this utility model provides a compression-resistant double corrugated paper core.
[0006] The technical solution of this utility model is as follows: a compression-resistant double-corrugated paper core corrugated paper, comprising a first surface layer, a corrugated paper core, a compression-resistant frame, a second surface layer and paper tubes. The corrugated paper core is connected inside the first surface layer, and a second surface layer is provided on the upper side of the first surface layer. The corrugated paper core is also connected inside the second surface layer. A compression-resistant frame is connected between the first surface layer and the second surface layer. Multiple paper tubes are placed at the troughs and crests of the two corrugated paper cores.
[0007] As a further preferred embodiment, it also includes adhesive strips, with multiple adhesive strips pasted at the troughs and crests of the two corrugated paper cores. The multiple adhesive strips are in contact with the first and second surface layers and are in contact with the compression frame.
[0008] As a further preferred option, it also includes a reinforcing plate, with the reinforcing plate connected inside the compression frame.
[0009] As a further preferred embodiment, it also includes a first compression plate, with the first compression plate connected to the side of the second surface layer.
[0010] As a further preferred embodiment, it also includes a second pressure-resistant plate, which is connected to the lower side of the first surface layer.
[0011] As a further preferred option, it also includes paper tubes, with multiple paper tubes connected inside the reinforcing plate, and the multiple paper tubes are arranged in a horizontal manner.
[0012] As a further preferred option, multiple paper tubes are made of high-grammage kraft paper.
[0013] As a further preferred option, the size of the reinforcing plate is designed to fit the interior of the compression frame.
[0014] The beneficial effects of this utility model are as follows: the paper tube design significantly enhances the connection strength between the two corrugated paper core layers, reduces the possibility of interlayer separation or deformation during transportation, handling or stacking, and ensures the overall stability and reliability of the packaging material; by filling the troughs and crests of the two corrugated paper cores, the paper tube provides additional support points for the entire structure, effectively disperses external pressure, and enhances the ability of the double corrugated paper core to resist complex or extreme external pressure. Attached Figure Description
[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.
[0016] Figure 2 This is a three-dimensional structural diagram of the corrugated paper core, the compression frame, and the second surface layer of this utility model.
[0017] Figure 3 This is a three-dimensional structural diagram of the anti-compression frame, the second surface layer, and the paper tube of this utility model.
[0018] Figure 4 This is a three-dimensional structural diagram of the corrugated paper core, paper tube, and adhesive strip of this utility model.
[0019] Figure 5 This is a three-dimensional structural diagram of the anti-compression frame and reinforcing plate of this utility model.
[0020] Figure 6 This is an exploded view of the second surface layer, the first pressure-resistant plate, and the second pressure-resistant plate of this utility model.
[0021] Figure 7 This is a cross-sectional view of the reinforcing plate of this utility model.
[0022] The labels in the diagram are as follows: 1-First surface layer, 2-Corrugated paper core, 3-Compression frame, 4-Second surface layer, 5-Paper tube, 6-Adhesive strip, 7-Reinforcing plate, 8-First compression plate, 81-Second compression plate, 9-Paper tube. Detailed Implementation
[0023] The technical solution will be further described below with reference to specific embodiments. It should be noted that the terms "up," "down," "left," and "right" used in this document refer only to the position of the structure shown in the corresponding drawings. The serial numbers assigned to components in this document, such as "first," "second," etc., are only used to distinguish the described objects and have no sequential or technical meaning. Unless otherwise specified, terms such as "connection" and "linkage" in this application include both direct and indirect connections (linkages).
[0024] Example: A compression-resistant double-wall corrugated paper core, such as Figures 1-7 As shown, the structure includes a first surface layer 1, a corrugated paper core 2, a compression frame 3, a second surface layer 4, paper tubes 5, adhesive strips 6, reinforcing plates 7, a first compression plate 8, a second compression plate 81, and paper tubes 9. The corrugated paper core 2 is connected inside the first surface layer 1. A second surface layer 4 is located on the upper side of the first surface layer 1, and corrugated paper cores 2 are also connected inside the second surface layer 4. A compression frame 3 connects the first surface layer 1 and the second surface layer 4. Multiple paper tubes 5 are placed at the troughs and crests of the two corrugated paper cores 2. These paper tubes 5 are made of high-grammage kraft paper. The paper tubes 5 significantly enhance the bonding strength between the layers of the two corrugated paper cores 2, reducing interlayer separation or deformation that may occur during transportation, handling, or stacking. Multiple paper tubes 5 are adhered to the troughs and crests of the two corrugated paper cores 2. Multiple adhesive strips 6 are in contact with the first surface layer 1 and the second surface layer 4, and are also in contact with the compression frame 3. The adhesive strips 6 enhance the connection strength between the corrugated paper cores 2. The compression frame 3 is internally connected to a reinforcing plate 7, the size of which is adapted to the interior of the compression frame 3. The reinforcing plate 7 further strengthens the compression resistance of the entire structure. The upper side of the second surface layer 4 is connected to a first compression plate 8, and the lower side of the first surface layer 1 is connected to a second compression plate 81. The second compression plate 81 enhances the overall structure's resistance to pressure from the first surface layer 1. Multiple paper tubes 9 are internally connected to the reinforcing plate 7. The multiple paper tubes 9 are arranged laterally, and the paper tubes 9 provide additional support for the reinforcing plate 7, helping to disperse the pressure applied to the packaging and improve its compression resistance.
[0025] When it is necessary to protect the double-walled corrugated paper core 2 from compression, firstly, the staff places multiple paper tubes 5 at the troughs and crests of the two corrugated paper cores 2, significantly enhancing the connection strength between the layers of the two corrugated paper cores 2. This reduces the possibility of interlayer separation or deformation during transportation, handling, or stacking, ensuring the overall stability and reliability of the packaging material. Subsequently, multiple adhesive strips 6 are pasted at the troughs and crests of the two corrugated paper cores 2 to ensure that the two corrugated paper cores 2 can be firmly fixed between the first surface layer 1, the compression frame 3, and the second surface layer 4. Next... Next, the staff will install multiple paper tubes 9 into the reinforcing plate 7 in sequence. After the installation of multiple paper tubes 9 is completed, the staff will place the reinforcing plate 7 into the compression frame 3 to further improve the stability of the overall structure. Finally, the staff will attach the first compression plate 8 to the second surface layer 4, and then attach the second compression plate 81 to the first surface layer 1. This will effectively reinforce and protect the double corrugated paper core 2. Through the above steps, the compression resistance of the double corrugated paper core 2 can be effectively improved, ensuring the integrity and safety of the double corrugated paper core 2 during transportation or storage.
[0026] The present application has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of the present application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present application. Therefore, the content of this specification should not be construed as a limitation of the present application.
Claims
1. A compression-resistant double-wall corrugated paperboard core, characterized in that, It includes a first surface layer (1), a corrugated paper core (2), a compression frame (3), a second surface layer (4), and a paper tube (5). The first surface layer (1) has a corrugated paper core (2) inside. The second surface layer (4) is located on the upper side of the first surface layer (1). The second surface layer (4) also has a corrugated paper core (2) inside. The compression frame (3) is fixedly connected between the first surface layer (1) and the second surface layer (4). Multiple paper tubes (5) are placed at the trough and crest positions of the two corrugated paper cores (2).
2. The compression-resistant double-wall corrugated paperboard as described in claim 1, characterized in that, It also includes adhesive strips (6), with multiple adhesive strips (6) pasted at the troughs and crests of the two corrugated paper cores (2). The multiple adhesive strips (6) are in contact with the first surface layer (1) and the second surface layer (4), and the multiple adhesive strips (6) are in contact with the compression frame (3).
3. The compression-resistant double-wall corrugated paperboard as described in claim 2, characterized in that, It also includes a reinforcing plate (7), and the reinforcing plate (7) is placed inside the compression frame (3).
4. The compression-resistant double-wall corrugated paperboard as described in claim 3, characterized in that, It also includes a first pressure-resistant plate (8), and the second surface layer (4) is connected to the first pressure-resistant plate (8) on its upper side.
5. The compression-resistant double-wall corrugated paperboard as described in claim 4, characterized in that, It also includes a second pressure plate (81), and the second pressure plate (81) is connected to the lower side of the first surface layer (1).
6. The compression-resistant double-wall corrugated paperboard as described in claim 5, characterized in that, It also includes paper tubes (9), and multiple paper tubes (9) are inserted inside the reinforcing plate (7).
7. The compression-resistant double-wall corrugated paperboard as described in claim 6, characterized in that, Multiple paper tubes (5) are made of high-grammage kraft paper.
8. The compression-resistant double-wall corrugated paperboard as described in claim 7, characterized in that, The dimensions of the reinforcing plate (7) are designed to fit the interior of the compression frame (3).