High-strength composite corrugated board

Abstract

The utility model relates to the technical field of composite corrugated boards, in particular to a high-strength composite corrugated board which comprises a corrugated board body, a reinforcing layer is arranged inside the corrugated board body, an upper corrugated core is fixedly connected to the upper end face inside the reinforcing layer, and a lower corrugated core is connected to the lower end of the upper corrugated core in an attached mode. A cavity is formed between the upper corrugated core and the lower corrugated core, a supporting column is fixedly arranged in the cavity, the upper end face of the supporting column is fixedly connected with an upper spherical support, and the lower end face of the supporting column is fixedly connected with a lower spherical support; a plurality of uniformly arranged buffer rubber cylinders are fixedly connected to the interior of the buffer layer; under the action of the reinforcing layer and the buffer layer and the reinforcing action of the upper corrugated core and the lower corrugated core, the bearing effect of the corrugated board is improved, and the service life of the corrugated board is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of composite corrugated cardboard technology, and in particular to a high-strength composite corrugated cardboard. Background Technology

[0002] Corrugated paper is a sheet-like material made by bonding linerboard and corrugated paper formed by corrugating rollers. Corrugated paper has been invented and used for over a century, boasting advantages such as low cost, light weight, easy processing, high strength, excellent printability, and convenient storage and handling. Over 80% of corrugated paper can be recycled. It is widely used for packaging food or digital products, is relatively environmentally friendly, and is widely adopted. Corrugated cardboard is a multi-layered adhesive, consisting of at least one layer of corrugated core paper and one layer of cardboard. It possesses high mechanical strength, capable of withstanding collisions and drops during handling. The actual performance of corrugated cardboard depends on three factors: the characteristics of the core paper and cardboard, and the structure of the carton itself. Currently, corrugated paper is widely used in paper packaging, offering numerous advantages such as simple processing, light weight, high strength, and easy storage. It is increasingly welcomed by packaging companies and is widely used in the market for packaging, storing, and transporting food or digital products.

[0003] Regarding the existing technology patent CN213056252U, which discloses a high-strength composite corrugated cardboard, it includes a first composite cardboard layer, a bottom connecting layer disposed on the upper surface of the first composite cardboard layer, a second composite cardboard layer disposed on the upper surface of the bottom connecting layer, a middle connecting layer fixedly connected to the upper surface of the second composite cardboard layer, a third composite cardboard layer disposed on the upper surface of the middle connecting layer, a top connecting layer fixedly connected to the upper surface of the third composite cardboard layer, and a fourth composite cardboard layer fixedly connected to the upper surface of the top connecting layer. The bottom connecting layer includes an inverted curve support layer and a bottom curve support layer, which are arranged alternately. The inner cavities of the bottom connecting layer and the top connecting layer are respectively provided with filling layers. Waterproof layers are fixedly connected inside both the first composite cardboard layer and the fourth composite cardboard layer. This utility model utilizes the bottom curve... The combined use of a bottom curved support layer and an inverted curved support layer, with the bottom curved support layer and the inverted curved support layer arranged alternately, connects and supports the two cardboard layers. This changes the traditional method of using a single-layer support pad inside composite corrugated cardboard, increasing the support force between the two composite corrugated cardboard layers, effectively enhancing the strength of the composite corrugated cardboard and improving its practicality. Through the combined use of a waterproof layer, a filler layer, and a reinforcing mesh, the filler layer fills the cavity between the bottom curved support layer and the inverted curved support layer, thereby reducing the deformation of the high-strength composite corrugated cardboard and improving its stability. Simultaneously, the reinforcing mesh and aluminum foil layer reinforce the cardboard layers, preventing tearing and improving the stability of the high-strength composite corrugated cardboard. The waterproof layer provides waterproof functionality to the high-strength composite corrugated cardboard.

[0004] However, existing corrugated cardboard has low load-bearing strength. It is easily damaged when unloading with excessive force, and its reusability is reduced, increasing costs. At the same time, during transportation, the corrugated cardboard is deformed due to constant collisions and vibrations, affecting its normal use. Furthermore, its moisture resistance is poor, and corrugated cardboard has lower load-bearing capacity after getting wet, which increases subsequent usage costs. Utility Model Content

[0005] In order to overcome the problem that existing corrugated cardboard has low load-bearing capacity, deforms during transportation and use, affects subsequent normal use, and increases its usage cost.

[0006] The technical solution of this utility model is as follows: a high-strength composite corrugated cardboard, comprising a corrugated cardboard body, a reinforcing layer disposed inside the corrugated cardboard body, an upper corrugated core fixedly connected to the upper end face inside the reinforcing layer, a lower corrugated core attached to the lower end face of the upper corrugated core, a cavity opened between the upper and lower corrugated cores, a support column fixedly disposed inside the cavity, an upper spherical support fixedly connected to the upper end face of the support column, a lower spherical support fixedly connected to the lower end face of the support column, a buffer layer attached to one side of the reinforcing layer, and multiple evenly arranged buffer rubber cylinders fixedly connected inside the buffer layer.

[0007] Preferably, the internal buffer layer also acts as a buffer during the collision. The even arrangement of multiple internal buffer rubber cylinders greatly enhances the protective effect and also provides excellent reinforcement to the corrugated cardboard body.

[0008] Preferably, a waterproof membrane is attached to both the top and bottom surfaces of the corrugated cardboard body, and the waterproof membrane is made of HDPE waterproof membrane.

[0009] Preferably, a wear-resistant layer is attached to the reinforcing layer on the side away from the buffer layer.

[0010] Preferably, the wear-resistant layer has multiple uniformly arranged flame-retardant cores fixedly connected inside, and the wear-resistant layer is filled with asbestos fiber.

[0011] Preferably, a connecting strip is fixedly connected between the two buffer rubber cylinders, and both the buffer rubber cylinders and the connecting strip are made of rubber.

[0012] Preferably, the reinforcing layer, buffer layer, and wear-resistant layer are all bonded together with strong adhesive.

[0013] Preferably, the interior of the corrugated cardboard body is filled with multiple evenly arranged moisture-proof particles.

[0014] The beneficial effects of this utility model are:

[0015] 1. This high-strength composite corrugated cardboard forms a complete reinforcement effect through the upper and lower corrugated cores inside the reinforcement layer. At the same time, the upper and lower spherical supports fixed inside the cavity between the upper and lower corrugated cores also improve the load-bearing effect and prevent collisions or deformation during transportation.

[0016] 2. This high-strength composite corrugated cardboard also has a cushioning effect through its internal buffer layer, which also cushions the impact. The evenly arranged multiple internal buffer rubber cylinders greatly improve the protection and also have a good reinforcement effect on the corrugated cardboard body. Attached Figure Description

[0017] Figure 1 The diagram shown is a three-dimensional structural schematic of the corrugated cardboard of this utility model.

[0018] Figure 2 This utility model is shown. Figure 1 A magnified schematic diagram of the three-dimensional structure at point A;

[0019] Figure 3 The diagram shown is a three-dimensional structural diagram of the reinforcing layer of this utility model;

[0020] Figure 4 The diagram shown is a schematic representation of the internal structure of the corrugated cardboard cross-section of this utility model.

[0021] Figure 5 This utility model is shown. Figure 4 A magnified schematic diagram of the three-dimensional structure at point B.

[0022] Explanation of reference numerals in the attached diagram: 1. Corrugated cardboard body; 2. Reinforcing layer; 3. Upper spherical support; 4. Support column; 5. Upper corrugated core; 6. Cavity; 7. Lower spherical support; 8. Lower corrugated core; 9. Buffer layer; 10. Buffer rubber cylinder; 11. Connecting strip; 12. Wear-resistant layer; 13. Flame-retardant core. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Please see Figures 1-5 This utility model provides an embodiment: a high-strength composite corrugated cardboard, including a corrugated cardboard body 1, a reinforcing layer 2 disposed inside the corrugated cardboard body 1, an upper corrugated core 5 fixedly connected to the upper end face inside the reinforcing layer 2, a lower corrugated core 8 attached to the lower end face of the upper corrugated core 5, a cavity 6 opened between the upper corrugated core 5 and the lower corrugated core 8, a support column 4 fixedly disposed inside the cavity 6, an upper spherical support 3 fixedly connected to the upper end face of the support column 4, a lower spherical support 7 fixedly connected to the lower end face of the support column 4, a buffer layer 9 attached to one side of the reinforcing layer 2, and a plurality of uniformly arranged buffer rubber cylinders 10 fixedly connected inside the buffer layer 9.

[0025] Please see Figures 1-4In this embodiment, waterproof membranes are attached to both the upper and lower surfaces of the corrugated cardboard body 1. The waterproof membranes are made of HDPE waterproof membrane. A wear-resistant layer 12 is attached to the reinforcing layer 2 on the other side away from the buffer layer 9. Multiple uniformly arranged flame-retardant cores 13 are fixedly connected inside the wear-resistant layer 12. The wear-resistant layer 12 is filled with asbestos fiber. The reinforcing layer 2 improves the load-bearing capacity of the corrugated cardboard body 1 and increases its overall service life. The upper corrugated core 5 and the lower corrugated core 8 inside the reinforcing layer 2 form a complete reinforcement effect. At the same time, the upper spherical support 3 and the lower spherical support 7 fixed inside the cavity 6 between the upper corrugated core 5 and the lower corrugated core 8 also improve the load-bearing capacity.

[0026] Please see Figures 4-5 In this embodiment, a connecting strip 11 is fixedly connected between the two buffer rubber cylinders 10. Both the buffer rubber cylinders 10 and the connecting strip 11 are made of rubber. The reinforcing layer 2, the buffer layer 9 and the wear-resistant layer 12 are all bonded together with strong adhesive. The interior of the corrugated cardboard body 1 is filled with multiple evenly arranged moisture-proof particles. The support column 4 between the upper spherical support 3 and the lower spherical support 7 is also greatly enhanced in terms of its load-bearing capacity, preventing collisions or deformations during transportation. At the same time, the internal buffer layer 9 also plays a buffering role when collisions occur. The even arrangement of multiple internal buffer rubber cylinders 10 greatly improves the protection effect and also has a good reinforcing effect on the corrugated cardboard body 1.

[0027] During operation, the reinforcing layer 2 enhances the load-bearing capacity of the corrugated cardboard body 1 and extends its overall service life. The upper corrugated core 5 and lower corrugated core 8 within the reinforcing layer 2 form a complete reinforcement. The upper spherical support 3 and lower spherical support 7, which are fixed inside the cavity 6 between the upper and lower corrugated core 5 and lower corrugated core 8, also enhance the load-bearing capacity. The support column 4 between the upper spherical support 3 and lower spherical support 7 is also greatly strengthened to prevent collisions or deformation during transportation. At the same time, the internal buffer layer 9 also acts as a buffer when collisions occur. The even arrangement of multiple internal buffer rubber cylinders 10 greatly enhances the protective effect and also provides a good reinforcement effect for the corrugated cardboard body 1.

[0028] Through the above steps, the upper corrugated core 5 and the lower corrugated core 8 inside the reinforcing layer 2 form a complete reinforcement effect. At the same time, the upper spherical support 3 and the lower spherical support 7 fixed inside the cavity 6 between the upper corrugated core 5 and the lower corrugated core 8 also improve the load-bearing effect. This solves the problem that the existing corrugated cardboard has low load-bearing capacity and will deform during transportation and use, affecting subsequent normal use and increasing its use cost.

Claims

1. A high-strength composite corrugated cardboard, comprising a corrugated cardboard body (1), characterized in that: The corrugated cardboard body (1) has a reinforcing layer (2) inside. The upper end of the reinforcing layer (2) is fixedly connected to an upper corrugated core (5). The lower end of the upper corrugated core (5) is attached to a lower corrugated core (8). A cavity (6) is opened between the upper corrugated core (5) and the lower corrugated core (8). A support column (4) is fixedly installed inside the cavity (6). An upper spherical support (3) is fixedly connected to the upper end of the support column (4). A lower spherical support (7) is fixedly connected to the lower end of the support column (4). A buffer layer (9) is attached to one side of the reinforcing layer (2). Multiple evenly arranged buffer rubber cylinders (10) are fixedly connected inside the buffer layer (9).

2. The high-strength composite corrugated cardboard according to claim 1, characterized in that: The corrugated cardboard body (1) has waterproof membranes attached to both the top and bottom surfaces.

3. The high-strength composite corrugated cardboard according to claim 1, characterized in that: A wear-resistant layer (12) is attached to the other side of the reinforcing layer (2) away from the buffer layer (9).

4. The high-strength composite corrugated cardboard according to claim 3, characterized in that: Multiple uniformly arranged flame-retardant cores (13) are fixedly connected inside the wear-resistant layer (12), and the wear-resistant layer (12) is filled with filling material.

5. The high-strength composite corrugated cardboard according to claim 1, characterized in that: A connecting strip (11) is fixedly connected between the two buffer rubber cylinders (10).

6. The high-strength composite corrugated cardboard according to claim 1, characterized in that: The reinforcing layer (2), buffer layer (9) and wear-resistant layer (12) are all bonded together with strong adhesive.

7. The high-strength composite corrugated cardboard according to claim 1, characterized in that: The interior of the corrugated cardboard body (1) is filled with multiple evenly arranged moisture-proof particles.

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