Multi-layer corrugated board with high-strength compression-resistant structure

Abstract

The utility model relates to the technical field of corrugated boards, and discloses a multi-layer corrugated board with a high-strength compression-resistant structure, which comprises a group of symmetrically arranged outer side surface paper, interlayer surface paper is arranged between the two outer side surface paper, outer ring core paper is fixedly connected to the outer rings of the top and the bottom of the interlayer surface paper, and the outer ring core paper is fixedly connected to the outer ring core paper. Longitudinal core paper is fixedly connected to the middle position of the top of the interlayer surface paper, and transverse core paper is fixedly connected to the middle position of the bottom of the interlayer surface paper. According to the multi-layer corrugated paperboard with the high-strength compression-resistant structure, the outer ring core paper is arranged, and the compression resistance of the whole paperboard is improved through the outer ring core paper, so that the paperboard is not prone to being bent when subjected to pressure in two different directions.

Description

Technical Field

[0001] This utility model relates to the field of corrugated cardboard technology, specifically to a multi-layer corrugated cardboard with a high-strength compression-resistant structure. Background Technology

[0002] Corrugated cardboard is a packaging material made of multiple layers of paper, its core being its unique corrugated structure. This structure consists of one or more layers of corrugated paper core bonded to a smooth linerboard, forming a lightweight yet sturdy board. Corrugated cardboard not only possesses excellent compressive strength and cushioning properties but is also highly favored for its recyclability and environmental friendliness.

[0003] For example, patent CN214529961U discloses a corrugated cardboard comprising at least one layer of face paper and at least one layer of corrugated core paper. One or more parallel stress-bearing bands are arranged inside the corrugated cardboard, with the direction of the stress-bearing bands perpendicular to the flute direction. This type of corrugated cardboard has its stress-bearing bands located inside the cardboard and produced together with it, reducing manufacturing processes and lowering equipment costs. Furthermore, the inclusion of one or more stress-bearing bands, as needed, can effectively improve the strength of the corrugated cardboard and reduce breakage.

[0004] The corrugated cardboard in the aforementioned patent still has certain defects:

[0005] Most corrugated cardboard currently available is designed with traditional V-shaped or U-shaped flutes. However, these shapes are prone to bending under external pressure (especially pressure from two different directions) due to their structural limitations. In particular, when subjected to large impacts or prolonged pressure from heavy objects, the V-shaped or U-shaped flute structure can easily lose its original support, leading to damage to the overall structure of the corrugated cardboard and consequently affecting the safety and integrity of the packaged goods. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a multi-layer corrugated cardboard with a high-strength compression-resistant structure, which gives the corrugated cardboard higher compression resistance and makes it less prone to bending.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a multi-layer corrugated cardboard with a high-strength compression-resistant structure, comprising a set of symmetrically arranged outer side sheets, an interlayer sheet between the two outer side sheets, an outer ring core sheet fixed to the outer ring of the top and bottom of the interlayer sheet, a longitudinal core sheet fixed to the middle position of the top of the interlayer sheet, and a transverse core sheet fixed to the middle position of the bottom of the interlayer sheet.

[0008] Furthermore, a shaping frame is fixed to the outer side of both the transverse core paper and the longitudinal core paper.

[0009] Furthermore, both the transverse and longitudinal core paper have V-shaped cross-sections.

[0010] Furthermore, the cross-section of the outer core paper is a regular hexagon.

[0011] Furthermore, the outer side of the paper facing the interlayer paper is fixed with a reinforcing rib layer.

[0012] Furthermore, the reinforcing rib layer is mainly composed of mesh fabric.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] This type of multi-layer corrugated cardboard with a high-strength compression-resistant structure is equipped with an outer core paper. The outer core paper improves the overall compression resistance of the cardboard, making it less prone to bending when subjected to pressure from two different directions. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a partial sectional view of the entire utility model;

[0017] Figure 3 This utility model Figure 2 A magnified schematic diagram of the structure at point A in the middle.

[0018] In the diagram: 1. Outer linerboard; 2. Outer core paper; 3. Interlayer linerboard; 4. Transverse core paper; 5. Vertical core paper; 6. Reinforcing rib layer; 7. Shaping frame. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] Please see Figure 1-3 A multi-layer corrugated cardboard with a high-strength compression-resistant structure includes a set of symmetrically arranged outer side sheets 1, an interlayer sheet 3 between the two outer side sheets 1, an outer ring core sheet 2 fixed to the top and bottom outer rings of the interlayer sheet 3, a longitudinal core sheet 5 fixed to the middle position of the top of the interlayer sheet 3, and a transverse core sheet 4 fixed to the middle position of the bottom of the interlayer sheet 3.

[0021] The multi-layer corrugated cardboard with a high-strength compression-resistant structure of this utility model is provided with an outer ring core paper 2, which improves the compression resistance of the entire cardboard. At the same time, it is provided with transverse core paper 4 and longitudinal core paper 5. Even if the cardboard is subjected to pressure from two different directions, and the intersection line of these two pressures is in the same direction as the transverse core paper 4 or the longitudinal core paper 5, making it difficult for the transverse core paper 4 or the longitudinal core paper 5 to provide support, the core paper with the intersection line of these two pressures in different directions and the outer ring core paper 2 will still provide support, making the cardboard more compression-resistant and less prone to bending deformation.

[0022] like Figure 2 and Figure 3 As shown, both the transverse core paper 4 and the longitudinal core paper 5 are fixed to the outer side with a shaping paper frame 7.

[0023] Specifically, the edges of the transverse core paper 4 and the longitudinal core paper 5 are fixed by the shaping paper frame 7, which not only prevents the transverse core paper 4 and the longitudinal core paper 5 from becoming loose, but also makes it easier to bond the transverse core paper 4 and the longitudinal core paper 5 to the interlayer cover paper 3.

[0024] like Figure 2 and Figure 3 As shown, both the transverse core paper 4 and the longitudinal core paper 5 have V-shaped cross sections. The V-shaped transverse core paper 4 and longitudinal core paper 5 have better compressive strength.

[0025] like Figure 2 As shown, the cross-section of the outer core paper 2 is a regular hexagon.

[0026] Specifically, the outer ring core paper 2, which is set in a regular hexagon, is perpendicular to the orientation of the entire cardboard. If the cardboard is subjected to pressure perpendicular to the cardboard, making it difficult for the transverse core paper 4 and the longitudinal core paper 5 to play a supporting role, the outer ring core paper 2 will also play a supporting role.

[0027] like Figure 3 As shown, the outer side of the paper 1, which is close to the inner side of the paper 3, is fixed with a reinforcing rib layer 6.

[0028] like Figure 3 As shown, the reinforcing rib layer 6 is mainly composed of mesh fabric.

[0029] Specifically, since the mesh fabric can be directly bonded to the outer side paper 1, the production process is relatively simple and convenient. At the same time, the mesh fabric is mainly made of glass fiber, so after bonding the reinforcing rib layer 6 made of mesh fabric to the outer side paper 1, the outer side paper 1 of the cardboard will have higher toughness and be less prone to damage.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A multi-layered corrugated paperboard having a high-strength compression-resistant structure, comprising a set of symmetrically arranged outer side papers (1), characterized in that, Two said outer side paper (1) between the sandwich layer paper (3), the outer circle of the top and bottom of the sandwich layer paper (3) is fixedly connected with the outer circle core paper (2), the middle position of the top of the sandwich layer paper (3) is fixedly connected with the longitudinal core paper (5), and the middle position of the bottom of the sandwich layer paper (3) is fixedly connected with the transverse core paper (4).

2. A multi-layered corrugated paperboard having a high strength compression resistant structure according to claim 1, wherein, The outer side of the transverse core paper (4) and the longitudinal core paper (5) is fixedly connected with a set paper frame (7).

3. The multi-layered corrugated paperboard with high strength compression resistant structure according to claim 1, wherein, The cross section of the transverse core paper (4) and the longitudinal core paper (5) is V-shaped.

4. The multi-layered corrugated paperboard with high strength compression resistant structure according to claim 1, wherein, The cross section of the outer circle core paper (2) is a regular hexagon.

5. The multi-layered corrugated paperboard with high strength compression resistant structure according to claim 1, wherein, The side of the outer side paper (1) close to the sandwich layer paper (3) is fixedly connected with a reinforcing rib layer (6).

6. A multi-layered corrugated paperboard having a high strength compression resistant structure according to claim 5, wherein, The reinforcing rib layer (6) is mainly composed of a mesh cloth.

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