High-strength anti-bending corrugated board

Abstract

The utility model discloses a high-strength anti-bending corrugated board which comprises an outer-layer paper board, a fireproof heat insulation layer is fixedly connected to the upper surface of the outer-layer paper board, a first corrugated board is fixedly connected to the upper surface of the fireproof heat insulation layer, an anti-bending structure is fixedly connected to the upper surface of the first corrugated board, and a second corrugated board is fixedly connected to the upper surface of the anti-bending structure. The anti-bending structure comprises a lower connecting layer, a lower connecting plate, an upper connecting plate and an upper connecting layer, the upper surface of the lower connecting layer is fixedly connected with the lower connecting plate, the lower surface of the upper connecting layer is fixedly connected with the upper connecting plate, a first bonding groove is formed in the upper surface of the lower connecting layer, and a second bonding groove is formed in the lower surface of the upper connecting layer. The anti-bending structure is additionally arranged in the corrugated board, the compression resistance and the anti-bending performance of the corrugated board in all directions can be improved through mutual clamping of the two connecting plates and connection of the two connecting plates and the two bonding grooves, and the situation that the performance of the corrugated board is affected due to the fact that a wave-shaped paper core of the corrugated board is bent is avoided; and in addition, the stacking capacity of heavy objects is improved, and the applicability of the carton is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of corrugated paperboards, and particularly relates to a high-strength anti-bending corrugated paperboard. Background Art

[0002] The corrugated paperboard is bonded by a face paper, a core paper and a liner paper, and has good elasticity and extensibility. It has the advantages of light weight, low production cost, high environmental protection performance, etc. Due to its special structure, the corrugated paper is given excellent buffering performance, enabling it to absorb and disperse external impact forces, thereby protecting the products inside the package from being damaged. Therefore, it is mainly used for manufacturing cartons, the sandwich of cartons, and other packaging materials for fragile commodities.

[0003] The traditional corrugated paperboard can provide certain buffering performance and compressive performance through the cavities formed by its unique wavy core paper, and can protect the products inside the made carton. However, the compressive and anti-bending performance of the existing corrugated paperboard is related to the direction of its wavy core paper. When pressure is applied in the wave grooves of the wavy core paper, it is prone to bending, affecting the use effect of the corrugated paperboard. And the existing corrugated paperboard has low strength in stacking heavy items after being made into a carton, affecting the applicability of the product. After retrieval, it is found that the technical solution provided by the utility model with the application number CN202321337517.0 also has the above problems. Summary of the Utility Model

[0004] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art, and provide a high-strength anti-bending corrugated paperboard. By adding an anti-bending structure inside the corrugated paperboard, through the mutual engagement of its two connecting plates and the connection of the two connecting plates with the two bonding grooves, the compressive and anti-bending performance of the corrugated paperboard in all directions can be improved, avoiding the bending of the wavy paper core of the corrugated paperboard from affecting the performance of the corrugated paperboard, and improving the stacking ability of heavy items and the applicability of the carton.

[0005] The utility model also provides the above-mentioned high-strength anti-bending corrugated paperboard, including: an outer paperboard, a fireproof and heat-insulating layer is fixedly connected to the upper surface of the outer paperboard, a first corrugated board is fixedly connected to the upper surface of the fireproof and heat-insulating layer, an anti-bending structure is fixedly connected to the upper surface of the first corrugated board, a second corrugated board is fixedly connected to the upper surface of the anti-bending structure, a partition layer is fixedly connected to the upper surface of the second corrugated board, a buffer layer is fixedly connected to the upper surface of the partition layer, and an inner paperboard is fixedly connected to the upper surface of the buffer layer;

[0006] The anti-bending structure includes a lower connection layer, a lower connecting plate, an upper connecting plate and an upper connection layer. The upper surface of the lower connection layer is fixedly connected to the lower connecting plate, and the lower surface of the upper connection layer is fixedly connected to the upper connecting plate. The upper surface of the lower connection layer is provided with a first bonding groove, and the lower surface of the upper connection layer is provided with a second bonding groove. By adding an anti-bending structure inside the corrugated board, through the mutual engagement of its two connecting plates and the connection between the two connecting plates and the two bonding grooves, the compressive and anti-bending properties of the corrugated board in all directions can be improved, preventing the wavy paper core of the corrugated board from bending and affecting the performance of the corrugated board, and improving the stacking ability of heavy items, thereby enhancing the applicability of the cardboard box.

[0007] According to the described high-strength anti-bending corrugated board, the inner surface of the first bonding groove is fixedly connected to the upper connecting plate, and the inner surface of the second bonding groove is fixedly connected to the lower connecting plate, which is convenient for improving the stability between the upper connection layer and the lower connection layer while enhancing the compressive capacity of the cardboard.

[0008] According to the described high-strength anti-bending corrugated board, the lower surface of the upper connecting plate and the upper surface of the lower connecting plate are both provided with card slots, and the card slots on the upper connecting plate are engaged with the card slots on the lower connecting plate, which is convenient for improving the connection stability between the upper connecting plate and the lower connecting plate, preventing the upper and lower connecting plates from sliding, and enhancing the anti-bending performance of the corrugated board.

[0009] According to the described high-strength anti-bending corrugated board, the first corrugated board is longitudinally arranged, and the second corrugated board is transversely arranged, which is convenient for improving the anti-bending performance of the corrugated board in different directions.

[0010] According to the described high-strength anti-bending corrugated board, the lower surface of the outer cardboard is fixedly connected with an outer waterproof film, and the upper surface of the inner cardboard is fixedly connected with an inner waterproof film, which is convenient for preventing the corrugated board from being soaked by liquid and affecting its performance.

[0011] According to the described high-strength anti-bending corrugated board, the materials of the outer waterproof film and the inner waterproof film are both polypropylene, and the upper surface of the inner waterproof film is provided with anti-slip ridges, which is convenient for increasing the friction of the inner waterproof film and preventing the internal products from sliding.

[0012] According to the described high-strength anti-bending corrugated board, the material of the fireproof and heat-insulating layer is asbestos, and the material of the buffer layer is foam.

[0013] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments;

[0015] Figure 1 It is an overall structure diagram of a high-strength anti-bending corrugated cardboard of the present utility model;

[0016] Figure 2 It is a partial structure diagram of a high-strength anti-bending corrugated cardboard of the present utility model;

[0017] Figure 3 It is an exploded view of a partial structure of a high-strength anti-bending corrugated cardboard of the present utility model;

[0018] Figure 4 is Figure 1 an enlarged schematic view of part A in

[0019] Figure 5 is Figure 3 an enlarged schematic view of part B in

[0020] Legend description:

[0021] 1. Outer cardboard; 2. Fireproof and heat-insulating layer; 3. First corrugated board; 4. Second corrugated board; 5. Partition layer; 6. Buffer layer; 7. Inner cardboard; 8. Lower connection layer; 9. Lower connecting plate; 10. Upper connecting plate; 11. Upper connection layer; 12. First bonding groove; 13. Second bonding groove; 14. Card slot; 15. Outer waterproof film; 16. Inner waterproof film; 17. Anti-slip convex pattern. Detailed implementation manners

[0022] This part will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The function of the drawings is to supplement the description of the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but it cannot be understood as a limitation on the protection scope of the present utility model.

[0023] Refer to Figures 1-5, an embodiment of the utility model provides a high-strength anti-bending corrugated cardboard, which comprises: an outer cardboard 1, an outer waterproof film 15 is fixedly connected to the lower surface of the outer cardboard 1, a fireproof and heat-insulating layer 2 is fixedly connected to the upper surface of the outer cardboard 1, the material of the fireproof and heat-insulating layer 2 is asbestos, a first corrugated board 3 is fixedly connected to the upper surface of the fireproof and heat-insulating layer 2, the first corrugated board 3 is longitudinally arranged, an anti-bending structure is fixedly connected to the upper surface of the first corrugated board 3, a second corrugated board 4 is fixedly connected to the upper surface of the anti-bending structure, the second corrugated board 4 is transversely arranged, a partition layer 5 is fixedly connected to the upper surface of the second corrugated board 4, a buffer layer 6 is fixedly connected to the upper surface of the partition layer 5, the material of the buffer layer 6 is foam, an inner cardboard 7 is fixedly connected to the upper surface of the buffer layer 6, an inner waterproof film 16 is fixedly connected to the upper surface of the inner cardboard 7, the materials of the outer waterproof film 15 and the inner waterproof film 16 are both polypropylene, and anti-slip convex lines 17 are arranged on the upper surface of the inner waterproof film 16.

[0024] During specific use, the first corrugated board 3 and the second corrugated board 4 are arranged longitudinally and transversely respectively, which can increase the anti-bending ability in different directions. The fireproof and heat-insulating layer 2 can improve the fireproof and heat-insulating performance of the corrugated cardboard box. The buffer layer 6 can further absorb the vibration generated during transportation to protect the internal products. The inner waterproof film 16 can prevent the internal products from leaking and soaking the corrugated cardboard, avoiding affecting the performance of the corrugated cardboard box. At the same time, the anti-slip convex lines 17 on its surface can play an anti-slip role. The outer waterproof film 15 can prevent external liquids from soaking the corrugated paper and can improve the printing fineness.

[0025] The anti-bending structure includes a lower connecting layer 8, a lower connecting plate 9, an upper connecting plate 10 and an upper connecting layer 11. The upper surface of the lower connecting layer 8 is fixedly connected to the lower connecting plate 9. The lower surface of the upper connecting layer 11 is fixedly connected to the upper connecting plate 10. Card slots 14 are arranged on the lower surface of the upper connecting plate 10 and the upper surface of the lower connecting plate 9. The card slots 14 on the upper connecting plate 10 are engaged with the card slots 14 on the lower connecting plate 9. A first bonding groove 12 is arranged on the upper surface of the lower connecting layer 8, and the inner surface of the first bonding groove 12 is fixedly connected to the upper connecting plate 10. A second bonding groove 13 is arranged on the lower surface of the upper connecting layer 11, and the inner surface of the second bonding groove 13 is fixedly connected to the lower connecting plate 9.

[0026] During specific use, the upper connecting plate 10 and the lower connecting plate 9 are engaged with each other, the upper connecting plate 10 is connected to the first bonding groove 12, the lower connecting plate 9 is connected to the second bonding groove 13, and the upper connecting layer 11 and the lower connecting layer 8 are fixed together, which can improve the compressive and anti-bending performance of the corrugated cardboard in all directions and improve the strength of the whole corrugated cardboard.

[0027] Working principle: The first corrugated board 3 and the second corrugated board 4 have an arch-like structure. When these structures are arranged side by side in a row, they can form a stable triangular support structure, which has a certain mechanical strength and compressive resistance, can effectively disperse pressure, and absorb external impacts, thereby protecting the items inside the packaging. The longitudinal and transverse arrangements of the first corrugated board 3 and the second corrugated board 4 can increase the anti-bending ability in different directions. The mutual engagement of the upper connecting plate 10 and the lower connecting plate 9, the connection of the upper connecting plate 10 with the first bonding groove 12, and the connection of the lower connecting plate 9 with the second bonding groove 13 can fix the upper connecting layer 11 and the lower connecting layer 8 together while improving the compressive and anti-bending performance of the corrugated board in all directions, enhancing the strength of the entire corrugated board. The fireproof and heat-insulating layer 2 can provide certain fireproof and heat-insulating performance. The buffer layer 6 can further absorb the vibrations generated during transportation to protect the internal products. The inner waterproof film 16 can prevent the internal products from leaking and soaking the corrugated board, avoiding affecting the performance of the corrugated cardboard box. At the same time, the anti-slip protrusions 17 on its surface can play an anti-slip role. The outer waterproof film 15 can prevent external liquids from soaking the corrugated paper and can improve the fineness of printing.

[0028] The embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art in the said technical field, various changes can be made without departing from the purpose of the present invention.

Claims

1. A high-strength anti-bending corrugated paperboard, characterized in that: include: An outer paperboard (1), the upper surface of the outer paperboard (1) being fixedly connected to a fireproof heat-insulating layer (2), the upper surface of the fireproof heat-insulating layer (2) being fixedly connected to a first corrugated board (3), the upper surface of the first corrugated board (3) being fixedly connected to an anti-bending structure, the upper surface of the anti-bending structure being fixedly connected to a second corrugated board (4), the upper surface of the second corrugated board (4) being fixedly connected to a partition layer (5), the upper surface of the partition layer (5) being fixedly connected to a buffer layer (6), and the upper surface of the buffer layer (6) being fixedly connected to an inner paperboard (7); The anti-bending structure comprises a lower connecting layer (8), a lower connecting plate (9), an upper connecting plate (10) and an upper connecting layer (11); the upper surface of the lower connecting layer (8) is fixedly connected to the lower connecting plate (9); the lower surface of the upper connecting layer (11) is fixedly connected to the upper connecting plate (10); the upper surface of the lower connecting layer (8) is provided with a first bonding groove (12); and the lower surface of the upper connecting layer (11) is provided with a second bonding groove (13).

2. The high-strength anti-bending corrugated paperboard according to claim 1, characterized in that: The inner surface of the first bonding groove (12) is fixedly connected to the upper connecting plate (10), and the inner surface of the second bonding groove (13) is fixedly connected to the lower connecting plate (9).

3. The high-strength anti-bending corrugated paperboard according to claim 1, characterized in that: The lower surface of the upper connecting plate (10) and the upper surface of the lower connecting plate (9) are both provided with a card slot (14), and the card slot (14) on the upper connecting plate (10) and the card slot (14) on the lower connecting plate (9) are mutually engaged and connected.

4. The high-strength anti-bending corrugated paperboard according to claim 1, characterized in that: The first corrugated plate (3) is arranged longitudinally, and the second corrugated plate (4) is arranged transversely.

5. The high-strength anti-bending corrugated paperboard according to claim 1, characterized in that: The lower surface of the outer paperboard (1) is fixedly connected to an outer waterproof membrane (15), and the upper surface of the inner paperboard (7) is fixedly connected to an inner waterproof membrane (16).

6. The high-strength anti-bending corrugated paperboard according to claim 5, characterized in that: The outer waterproof membrane (15) and the inner waterproof membrane (16) are both made of polypropylene, and the upper surface of the inner waterproof membrane (16) is provided with anti-slip convex patterns (17).

7. The high-strength anti-bending corrugated paperboard according to claim 1, characterized in that: The material of the fireproof and heat-insulating layer (2) is asbestos, and the material of the buffer layer (6) is foam.

Images