Pressure-resistant corrugated board

Abstract

The utility model relates to the technical field of corrugated boards, and discloses a pressure-resistant corrugated board which comprises a top board and a bottom board, drainage assemblies and connecting boards are arranged on the surfaces of the top board and the bottom board, the connecting boards are located between the top board and the bottom board, and a plurality of supporting paperboards are arranged on the upper side and the lower side of each connecting board. The connecting plates are connected with the top plate and the bottom plate through supporting paperboards, a plurality of connecting grooves are formed in the outer side wall of each supporting paperboard, and the supporting paperboards are clamped with one another through the connecting grooves. According to the utility model, the supporting paperboards are adhered among the paperboards through the adhesive, so that the supporting paperboards can support each other and disperse the pressure when bearing the pressure, and the connecting grooves on the outer walls of the supporting paperboards increase the contact area with the adhesive when being adhered, thereby achieving the effect that the whole structure is more stable; the problem that a traditional corrugated paperboard is prone to deformation and layering when pressed is solved, and the compressive strength and durability of the paperboard are improved.

Description

Technical Field

[0001] This utility model relates to the field of corrugated cardboard technology, and more particularly to pressure-resistant corrugated cardboard. Background Technology

[0002] In the packaging industry, pressure-resistant corrugated cardboard occupies an extremely important position. With the rapid development of e-commerce and the increasing frequency of logistics transportation, the requirements for product packaging are constantly improving. As a commonly used packaging material, corrugated cardboard needs to have good compression resistance to ensure that products can be effectively protected during long-distance transportation and warehousing. Whether it is a large household appliance or a heavy industrial component, the performance of pressure-resistant corrugated cardboard is put to a rigorous test. At the same time, in order to reduce costs and improve packaging efficiency, higher requirements are also placed on the stability and durability of corrugated cardboard.

[0003] In existing technologies, the traditional mechanical structure of corrugated cardboard mainly consists of simple flat cardboard that is corrugated using a specific corrugation process to form a sandwich structure with a certain corrugated shape. The technical principle is to utilize the corrugated shape to increase the cardboard's cushioning and compression resistance, enabling it to withstand a certain amount of pressure. During manufacturing, different layers of cardboard are bonded together with adhesive to form a single unit. This structure has been widely used for a long time and still plays a role in some scenarios where packaging requirements are not high.

[0004] However, traditional pressure-resistant corrugated cardboard has a significant problem: it is prone to deformation and delamination under pressure. When subjected to greater pressure, the bonding strength between the layers inside the cardboard is insufficient, leading to the failure of the support structure and deformation. Once the cardboard is deformed, its protective function for the product is greatly reduced, and the product is easily damaged during transportation. Moreover, due to the delamination between the layers, the overall compressive strength of the cardboard drops sharply, making it unable to withstand subsequent pressure, which seriously affects the reliability and stability of the packaging. This also limits its application in some fields with high packaging requirements. Therefore, pressure-resistant corrugated cardboard is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides pressure-resistant corrugated cardboard, which aims to improve the problem of cardboard being prone to deformation and delamination under pressure in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] Pressure-resistant corrugated cardboard, including:

[0008] A top plate and a bottom plate, both of which are provided with drainage components to guide liquid on their surfaces;

[0009] A connecting plate is located between the top plate and the bottom plate. Multiple supporting cardboards are provided on both the upper and lower sides of the connecting plate. The connecting plate is connected to the top plate and the bottom plate through the supporting cardboards to distribute the pressure given on both sides of the top plate and the bottom plate. Multiple connecting grooves are provided on the outer side wall of each supporting cardboard, and the multiple supporting cardboards are interlocked with each other through the connecting grooves.

[0010] As a further description of the above technical solution:

[0011] The cross-section of the supporting cardboard is an isosceles triangle, and the supporting cardboard is distributed alternately on both sides of the connecting plate.

[0012] As a further description of the above technical solution:

[0013] The connecting grooves on the two equal sides of the supporting cardboard are distributed in an alternating manner, and the protruding part of the connecting groove engages with the recess of the connecting groove on the adjacent side.

[0014] As a further description of the above technical solution:

[0015] The drainage component is specifically a semi-circular drainage channel, which is formed on the surface of the top plate and the bottom plate, and the drainage channels are distributed in an array on the surface of the top plate and the bottom plate.

[0016] As a further description of the above technical solution:

[0017] The top plate, connecting plate, and bottom plate are all fixedly connected with reinforcing ribs at their internal center positions, and the reinforcing ribs are distributed in a mesh-like interwoven pattern.

[0018] As a further description of the above technical solution:

[0019] The gaps between the top plate, connecting plate, and bottom plate are all connected by adhesive bonding.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, the layers of cardboard are bonded together with staggered supporting cardboard by adhesive, so that when the layers of cardboard are subjected to pressure, the supporting cardboard can support each other and distribute the pressure. The connecting grooves on the outer wall of the supporting cardboard increase the contact area with the adhesive during bonding, thereby enhancing the bonding performance between the supporting cardboard and achieving the effect of making the overall structure more stable. This solves the problem of traditional corrugated cardboard being prone to deformation and delamination under pressure, and improves the compressive strength and durability of the cardboard.

[0022] 2. In this utility model, a mesh reinforcing rib is embedded in the middle of each layer of cardboard. The mesh structure can evenly distribute the external force to the entire surface of the cardboard, avoid stress concentration, and improve the pressure resistance of the cardboard. At the same time, the drainage grooves on the outer walls of the top and bottom plates can quickly guide the liquid, reduce the erosion of the cardboard by the liquid, thereby achieving the effect of enhancing the strength of the cardboard and extending its service life. This solves the problem of traditional cardboard being easily deformed and damaged under pressure and liquid erosion, and improves the stability and durability of the cardboard in humid or heavy-load environments. Attached Figure Description

[0023] Figure 1 This is a perspective view of the pressure-resistant corrugated cardboard proposed in this utility model;

[0024] Figure 2 This is a schematic diagram of the supporting cardboard structure for the pressure-resistant corrugated cardboard proposed in this utility model.

[0025] Figure 3 This is a schematic diagram of the reinforcing rib structure of the pressure-resistant corrugated cardboard proposed in this utility model.

[0026] Legend:

[0027] 1. Top plate; 2. Supporting cardboard; 3. Connecting groove; 4. Connecting plate; 5. Bottom plate; 6. Reinforcing rib; 7. Drainage channel. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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.

[0029] Reference Figures 1-3 One embodiment of this utility model provides: pressure-resistant corrugated cardboard, comprising:

[0030] Top plate 1 and bottom plate 5, as the upper and lower outer layers of corrugated cardboard, directly bear the pressure and other forces applied by the outside world, while protecting the internal structure from the direct influence of the external environment. Both the top plate 1 and bottom plate 5 are equipped with drainage components to guide liquid on the surface of the top plate 1 and bottom plate 5, reduce the erosion of the cardboard by the liquid, and extend the service life of the cardboard.

[0031] A connecting plate 4 is located between the top plate 1 and the bottom plate 5. Multiple supporting cardboard pieces 2 are provided on both the upper and lower sides of the connecting plate 4. The connecting plate 4 is connected to both the top plate 1 and the bottom plate 5 via the supporting cardboard pieces 2. These supporting cardboard pieces 2 disperse the pressure applied to both sides of the top plate 1 and the bottom plate 5, evenly transmitting the pressure throughout the entire cardboard structure, thereby improving the cardboard's pressure resistance. Each supporting cardboard piece 2 has multiple connecting grooves 3 on its outer wall. These grooves interlock with each other. The supporting cardboard pieces 2 have an isosceles triangular cross-section, providing excellent support performance. The supporting cardboard pieces 2 are distributed alternately on both sides of the connecting plate 4, and the connecting grooves 3 on the two equilateral sides of each supporting cardboard piece 2 are staggered. The design of the connecting grooves 3 not only enhances the connection stability between the supporting cardboard pieces 2, but also... Partially engaged within the recessed groove 3 of the adjacent side connection, thereby enhancing the adhesive performance between the supporting cardboard 2 and making the entire structure more stable. The flow-guiding component is specifically a semi-circular flow-guiding groove 7, which is opened on the surface of the top plate 1 and the bottom plate 5. The flow-guiding groove 7 is distributed in an array on the surface of the top plate 1 and the bottom plate 5. Reinforcing ribs 6 are fixedly connected to the center of the top plate 1, the connecting plate 4, and the bottom plate 5. The reinforcing ribs 6 are made of metal wire. The function of the reinforcing ribs 6 is to further enhance the strength and pressure resistance of the cardboard, evenly distribute the external force to the entire surface of the cardboard, avoid stress concentration, and improve the stability of the cardboard when subjected to pressure. The reinforcing ribs 6 are distributed in a mesh-like interwoven pattern. The gaps between the top plate 1, the connecting plate 4, and the bottom plate 5 are all connected by gluing, which can ensure that the cardboard layers are tightly connected to form a solid whole.

[0032] Specifically, the pressure-resistant corrugated cardboard consists of a top plate 1, a connecting plate 4, and a bottom plate 5. During manufacturing, support cardboard 2 is first placed alternately on the upper and lower sides of the connecting plate 4, with the bottom edge of the support cardboard 2 aligned with the connecting plate 4. Then, they are arranged sequentially, with the protruding part of one support cardboard 2 aligning with the recessed part of another. A certain pressure is then applied to ensure they are tightly fitted together. Next, a high-strength adhesive is evenly applied to the connecting groove 3 of the support cardboard 2 and the surfaces in contact with the top plate 1 and bottom plate 5 to increase the adhesion between the support cardboard 2 and between the support cardboard 2 and the top and bottom plates 1 and 5. Then, the top plate 1 and bottom plate 5 are respectively placed over the upper and lower sides of the support cardboard 2, ensuring the top of the support cardboard 2 is tightly fitted to the top and bottom plates 1 and 5. During the bonding process, the top and bottom plates 1 and 5 move vertically downwards and upwards until they are fully in contact with and tightly bonded to the support cardboard 2. Reinforcing ribs 6 are embedded in the middle of each layer of cardboard. During embedding, a pre-made mesh reinforcement... The reinforcing rib 6 is precisely positioned at the center of the top plate 1, connecting plate 4, and bottom plate 5. The reinforcing rib 6 disperses external forces within the cardboard. When the cardboard is subjected to external pressure, the pressure is first transmitted to the top plate 1 or bottom plate 5, which then transmits the pressure to the connected supporting cardboard 2. Under pressure, the supporting cardboard 2 transmits pressure to the surrounding supporting cardboard 2. Because the supporting cardboard 2 is stacked in an alternating pattern, the pressure is mutually supported and dispersed between them. During pressure transmission, the connecting groove 3 on the outer wall of the supporting cardboard 2, through its tight bond with the adhesive, further enhances the connection strength between the supporting cardboard 2, ensuring that the pressure is evenly distributed throughout the entire cardboard structure. Simultaneously, the drainage grooves 7 on the outer walls of the top plate 1 and bottom plate 5 function when encountering liquid. When liquid comes into contact with the surface of the top plate 1 or bottom plate 5, under the guidance of gravity and the drainage grooves 7, the liquid flows along the semi-circular trajectory of the drainage grooves 7, thereby achieving the purpose of diverting the liquid, reducing liquid erosion of the cardboard, and enhancing the strength of the cardboard.

[0033] Working principle: This pressure-resistant corrugated cardboard consists of a top plate 1, connecting plates 4, and a bottom plate 5. Supporting plates 2 are bonded between the cardboard layers using high-strength adhesive. These supporting plates 2 are stacked in an alternating pattern, allowing them to support each other and distribute pressure when the cardboard layers are under stress. The connecting grooves 3 on the outer walls of the supporting plates 2 provide more contact area with the adhesive during bonding, thus enhancing the bonding performance between the supporting plates 2 and making the structure more stable. Reinforcing ribs 6 are embedded in the middle of each cardboard layer. These ribs are mesh-like, and the mesh structure evenly distributes external force across the entire cardboard surface, preventing stress concentration and increasing the pressure resistance of each layer. Simultaneously, the drainage grooves 7 on the outer walls of the top plate 1 and bottom plate 5 help to drain liquid, thereby enhancing the cardboard strength and reducing liquid erosion.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. Pressure-resistant corrugated board, characterized in that Include: Top plate (1) and bottom plate (5), the top plate (1) and bottom plate (5) surface are provided with drainage assembly, for guiding the top plate (1) and bottom plate (5) surface liquid; Connecting plate (4), the connecting plate (4) is located between the top plate (1) and bottom plate (5), the connecting plate (4) upper and lower sides are provided with a plurality of support paperboard (2), the connecting plate (4) and the top plate (1) and bottom plate (5) are connected through support paperboard (2), for dispersing the pressure given on both sides of the top plate (1) and bottom plate (5), each support paperboard (2) outer wall is provided with a plurality of connecting grooves (3), the plurality of support paperboard (2) are clamped through connecting grooves (3).

2. The pressure-resistant corrugated paperboard according to claim 1, characterized in that: The support paperboard (2) cross section is isosceles triangle, and the support paperboard (2) is alternately distributed on the two sides of the connecting plate (4).

3. The pressure-resistant corrugated paperboard according to claim 1, characterized in that: The connecting grooves (3) on the two equal sides of the support paperboard (2) are distributed in an interlaced manner, and the convex part of the connecting groove (3) is clamped in the recess of the adjacent connecting groove (3).

4. The pressure-resistant corrugated paperboard according to claim 1, characterized in that: The drainage assembly is specifically a semicircular drainage groove (7), which is arranged on the surface of the top plate (1) and the bottom plate (5), and is arranged in an array on the surface of the top plate (1) and the bottom plate (5).

5. The pressure-resistant corrugated paperboard according to claim 1, characterized in that: The top plate (1), the connecting plate (4) and the bottom plate (5) are fixedly connected with the reinforcing ribs (6) at the inner center positions, and the reinforcing ribs (6) are distributed in a mesh interlacing manner.

6. The pressure-resistant corrugated paperboard according to claim 1, characterized in that: The top plate (1), the connecting plate (4) and the bottom plate (5) are connected through gluing in the gaps.

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