Corrugated board

Abstract

The corrugated board comprises first surface paper and second surface paper, at least one layer of core paper assembly is arranged between the first surface paper and the second surface paper, the core paper assembly is formed by buckling two pieces of corrugated core paper, and the two pieces of corrugated core paper abut against the inner side wall, so that the corrugated core paper and the corrugated core paper, the first surface paper or the second surface paper are provided with buffering cavities, and the buffering cavities are communicated with the buffering cavities. According to the corrugated board, the core paper assembly is formed by buckling the two pieces of corrugated core paper, and the two pieces of corrugated core paper extend to the inner side wall, so that the strength is improved, the corrugated board is easy to process, the thickness of the core paper assembly is prevented from being increased, and compared with a corrugated board with the same thickness, the strength is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of corrugated paper, in particular to a corrugated paperboard. Background Art

[0002] Corrugated cardboard, also known as corrugated cardboard, is made of at least one layer of corrugated paper and one layer of boxboard paper, and has good elasticity and extensibility. It is mainly used to make cartons, carton sandwiches, and other packaging materials for fragile goods. Corrugated paper, that is, the core board, is usually in the shape of a sine wave. In order to improve its strength, reinforcements are usually added to the core board in the shape of a sine wave. For example, a corrugated cardboard disclosed in Chinese patent application CN202020997766.2 adds longitudinal support plates and oblique support plates to the corrugated core board. Although the corrugated cardboard has improved strength and cushioning performance, it may be more complicated to process, and it is not easy to fix (connect) the longitudinal support plate or the oblique support plate; some also improve strength by stacking multiple layers of corrugated core boards, but it also increases the thickness of the corrugated cardboard and does not meet the thickness requirements. Utility Model Content

[0003] The utility model aims to provide a corrugated paperboard for solving the above-mentioned problem, so that the strength of the corrugated paperboard is improved within the required thickness range and the corrugated paperboard is easy to process.

[0004] To achieve the above-mentioned purpose, the following technical scheme is adopted: a corrugated cardboard, comprising a first side paper and a second side paper, wherein at least one layer of core paper assembly is arranged between the first side paper and the second side paper, and the core paper assembly is formed by two corrugated core papers buckled together and pressed against each other on the inner side wall so that the corrugated core paper and the corrugated core paper, the first side paper or the second side paper have a buffer cavity.

[0005] Preferably, the corrugated core paper has a plurality of strip-shaped protrusions that arch outwards along the horizontal direction, and the cross-section of the strip-shaped protrusions is arc-shaped.

[0006] Preferably, the corrugated core paper has a plurality of inwardly concave strip-shaped grooves along the horizontal direction, and the strip-shaped grooves are polygonal structures.

[0007] Preferably, a buffer layer is provided between the core paper assembly and the first surface paper and the second surface paper.

[0008] Preferably, an additional layer is provided inside the first surface paper and the second surface paper, and the additional layer is a waterproof layer or a heat insulation layer.

[0009] Beneficial effects achieved by the utility model:

[0010] Compared with the prior art, the utility model provides a corrugated paperboard, in which two corrugated core papers are buckled together to form a core paper assembly, and the two corrugated core papers extend to each other to form a buffer cavity on the inner wall, which not only improves the strength and facilitates processing, but also avoids increasing the thickness of the core paper assembly, making it stronger than corrugated paperboard of the same thickness. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 The utility model is a schematic diagram of the structure of a corrugated paperboard.

[0012] Figure 2 for Figure 1 Schematic diagram of the core paper component structure.

[0013] Figure 3 This is a structural schematic diagram of the second embodiment of the utility model.

[0014] Figure 4 for Figure 3 Schematic diagram of the core paper component structure.

[0015] Figure 5 This is another structural schematic diagram of the second embodiment of the utility model.

[0016] Figure 6 for Figure 5 Schematic diagram of the core paper component structure. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present utility model are clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all the embodiments.

[0018] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0019] See attached Figure 1-6A corrugated paperboard comprises a first side paper 1 and a second side paper 2, wherein at least one layer of core paper assembly 3 is arranged between the first side paper 1 and the second side paper 2, wherein the core paper assembly 3 is formed by two corrugated core papers 4 buckled together, and abutted against the inner wall so that the corrugated core paper 4 and the corrugated core paper 4, the first side paper 1 or the second side paper 2 have a buffer cavity 5 to meet the buffering requirements, and after the two corrugated core papers 4 are buckled together, the thickness of the core paper assembly 3 is less than the sum of the thicknesses of the two corrugated core papers 4, and the core paper assembly 3 formed by the two corrugated core papers 4 buckled together, and the two corrugated core papers 4 extend to the inner wall, which not only improves the strength and is easier to process, but also avoids increasing the thickness of the core paper assembly, making it stronger than the corrugated paperboard of the same thickness.

[0020] Example 1, please refer to Figure 1 and Figure 2 A corrugated paperboard comprises a first side paper 1 and a second side paper 2, wherein at least one layer of core paper assembly 3 is arranged between the first side paper 1 and the second side paper 2, wherein the core paper assembly 3 is formed by two corrugated core papers 4 buckled together and pressed against each other on the inner side wall so that the corrugated core paper 4 and the corrugated core paper 4, the first side paper 1 or the second side paper 2 have a buffer cavity 5, wherein the corrugated core paper 4 has a plurality of outwardly arched strip-shaped protrusions 4a in the horizontal direction, and the cross section of the strip-shaped protrusions 4a is arc-shaped, so that the unarched part presses against the inner side of the opposite side strip-shaped protrusion 4a and is (adhered) connected thereto.

[0021] Example 2, please refer to Figure 3-Figure 6 , which is different from the first embodiment in that the corrugated medium paper 4 has a plurality of inwardly concave strip grooves 4b in the horizontal direction, and the cross section of the strip grooves 4b is a polygonal structure, so that the strip grooves 4b abut against the inner plane of the opposite side corrugated medium paper 4 that is not concave inward; wherein, Figure 4 The strip groove 4b is a triangular structure. Figure 6 The strip-shaped groove 4b has a quadrilateral structure.

[0022] Wherein, a buffer layer 6 is arranged between the core paper assembly 3 and the first surface paper 1 and the second surface paper 2 .

[0023] An additional layer 7 is provided inside the first surface paper 1 and the second surface paper 2, and the additional layer 7 is a waterproof layer or a heat insulation layer.

[0024] The utility model also includes a corrugated paper box, comprising any of the above-mentioned corrugated paperboards.

[0025] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A corrugated paperboard, comprising a first surface paper (1) and a second surface paper (2), characterized in that: At least one layer of core paper assembly (3) is provided between the first face paper (1) and the second face paper (2); the core paper assembly (3) is formed by two corrugated core papers (4) buckled together and resting against each other on the inner side wall so that the corrugated core paper (4) and the first face paper (1) or the second face paper (2) have a buffer cavity (5).

2. A corrugated paperboard according to claim 1, characterized in that: The corrugated core paper (4) has a plurality of strip-shaped protrusions (4a) that are arched outwards in the horizontal direction, and the cross-section of the strip-shaped protrusions (4a) is arc-shaped.

3. A corrugated paperboard according to claim 1, characterized in that: The corrugated core paper (4) has a plurality of inwardly concave strip-shaped grooves (4b) along the horizontal direction, and the strip-shaped grooves (4b) are of a polygonal structure.

4. A corrugated paperboard according to claim 2 or 3, characterized in that: A buffer layer (6) is provided between the core paper assembly (3) and the first surface paper (1) and the second surface paper (2).

5. The corrugated paperboard according to claim 1, characterized in that: An additional layer (7) is provided on the inner side of the first surface paper (1) and the second surface paper (2).

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