Composite fireproof corrugated board

Abstract

The utility model discloses a composite fireproof corrugated board which comprises a corrugated board body, the corrugated board body comprises a corrugated paper core, two ends of the corrugated paper core are fixedly connected with first paperboards, and one ends, far away from the corrugated paper core, of the two first paperboards are fixedly connected with reinforcing layers. Second paperboards are fixedly connected to the ends, away from the corrugated paper core, of the two reinforcing layers correspondingly, waterproof paper layers are fixedly connected to the ends, away from the corrugated paper core, of the two second paperboards correspondingly, flame-retardant paper layers are fixedly connected to the exteriors of the waterproof paper layers correspondingly, and first flame-retardant paperboards are connected to the front end and the rear end of the corrugated paper board body correspondingly; the left end and the right end of the corrugated board body are both connected with the second flame-retardant paperboards, and the side ends of the two second flame-retardant paperboards are connected with the side ends of the two first flame-retardant paperboards, so that water and fire can be prevented from entering the corrugated board body from the side face, combustion in the corrugated board is avoided, and the waterproof and fireproof effects of the corrugated board are improved.

Description

Technical Field

[0001] This utility model relates to the field of corrugated cardboard technology, and more specifically, to a composite fire-resistant corrugated cardboard. Background Art

[0002] Corrugated cardboard, also known as corrugated paperboard, is made of at least one layer of corrugated paper and one layer of linerboard (also called boxboard). It has good elasticity and extensibility and is mainly used to manufacture cartons, carton fillings, and other packaging materials for fragile goods. Its production mainly uses traditional methods of pulping straw pulp and waste paper to make a base paperboard similar to yellow cardboard. This base paperboard is then mechanically rolled into a corrugated shape, and finally bonded to the linerboard with adhesives such as sodium silicate.

[0003] A search revealed that Chinese utility model patent application number CN202122507191.9 discloses a high-strength flame-retardant and environmentally friendly corrugated cardboard, comprising a compression-resistant reinforcing structural layer bonded to the adjacent surfaces of the corrugated core body, a corrugated paper layer on the outer surface of the compression-resistant reinforcing structural layer, and a fire-retardant composite paper layer bonded to the outer surface of the corrugated paper layer. The fire-retardant composite paper layer comprises, from the outside to the inside, a wear-resistant paper layer, a waterproof paper layer, a flame-retardant paper layer A, and a reinforcing layer, which have advantages such as high compression resistance, flame retardancy, and a certain degree of waterproof performance, reducing safety hazards during use.

[0004] However, there are gaps between the corrugated core and the compression-resistant structural layer. The four sides of the corrugated cardboard lack corresponding waterproof and fireproof structures. Water and fire can easily enter the interior of the corrugated paper through the gaps on the sides, and fire can easily burn from inside the corrugated cardboard, resulting in poor waterproof and fireproof performance. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the problems existing in the prior art, this utility model provides a composite fireproof corrugated cardboard to solve the technical problems mentioned in the background art, such as water and fire easily entering the interior of the corrugated cardboard through the side gaps, fire easily burning from the inside of the corrugated cardboard, and its poor waterproof and fireproof effects.

[0007] (2) Technical solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a composite fire-resistant corrugated cardboard, comprising a corrugated cardboard body, the corrugated cardboard body including a corrugated core, both ends of the corrugated core being fixedly connected to a first cardboard, the ends of the two first cardboards away from the corrugated core being fixedly connected to a reinforcing layer, the ends of the two reinforcing layers away from the corrugated core being fixedly connected to a second cardboard, the ends of the two second cardboards away from the corrugated core being fixedly connected to a waterproof paper layer, a flame-retardant paper layer being fixedly connected to the outside of the waterproof paper layer, the front and rear ends of the corrugated cardboard body being connected to a first flame-retardant cardboard, the left and right ends of the corrugated cardboard body being connected to a second flame-retardant cardboard, the side ends of the two second flame-retardant cardboards being connected to the side ends of the two first flame-retardant cardboards, and the external parts of the joints between the two first flame-retardant cardboards, the two second flame-retardant cardboards and the corrugated cardboard body being covered with a fireproof film, which can prevent water and fire from entering the interior of the corrugated cardboard body from the sides, prevent the interior of the corrugated cardboard from burning, and improve its waterproof and fireproof effect.

[0009] The present invention is further configured such that multiple supporting paper tubes are fixedly connected inside the corrugated paper core, which facilitates stable support for the corrugated paper core.

[0010] The present invention is further configured such that a first connecting block is fixedly connected to the side ends of the two first flame-retardant cardboards at the positions corresponding to the reinforcing layer, and a post is fixedly connected to the side ends of the two first flame-retardant cardboards at the positions corresponding to the multiple supporting paper tubes. The multiple posts are respectively inserted into the interior of the multiple supporting paper tubes, so as to facilitate the support of the corners of the corrugated cardboard body and ensure the stability of the connection between the second flame-retardant cardboard and the corrugated cardboard body.

[0011] The present invention is further configured such that a plurality of second connecting blocks are fixedly connected to the side ends of the two second flame-retardant cardboards at the positions corresponding to the reinforcing layer, and inserts are fixedly connected to the side ends of the two second flame-retardant cardboards at the positions corresponding to the corrugated core. The inserts are inserted into the middle of the two first cardboards to facilitate support of the corners of the corrugated cardboard body and ensure the stability of the connection between the second flame-retardant cardboard and the corrugated cardboard body.

[0012] The present invention is further configured such that each of the first connecting blocks on both sides of the first flame-retardant cardboard is provided with a connecting groove, and the side end of the second flame-retardant cardboard is fixedly connected with a plurality of connecting posts, which are respectively inserted into the interior of the plurality of connecting grooves to ensure the stability of the connection between the first flame-retardant board and the second flame-retardant board.

[0013] The present invention is further configured such that the corrugated cardboard body, the two first flame-retardant cardboards and the two second flame-retardant cardboards are tightly bonded together with fire-retardant adhesive to ensure its fire-retardant effect.

[0014] The present invention is further configured such that the reinforcing layer includes multiple regular hexagonal support frames, and two adjacent regular hexagonal support frames are fixedly connected to each other to facilitate stable support and prevent the corrugated cardboard from being flattened.

[0015] The present invention is further provided that a wear-resistant layer is fixedly connected to the side end of the flame-retardant paper layer to increase its wear resistance.

[0016] (3) Beneficial effects

[0017] Compared with the prior art, this utility model provides a composite fire-resistant corrugated cardboard, which has the following beneficial effects:

[0018] 1. By connecting the first flame-retardant cardboard to the front and rear ends of the corrugated cardboard body, and connecting the second flame-retardant cardboard to the left and right ends of the corrugated cardboard body, and covering the connection points of the two first flame-retardant cardboards, the two second flame-retardant cardboards and the corrugated cardboard body with a fireproof film, the side ends of the corrugated cardboard body are fireproofed. The fireproof film also provides a certain degree of waterproofing, thus preventing water and fire from entering the interior of the corrugated cardboard body from the side, preventing internal combustion of the corrugated cardboard, and improving its waterproof and fireproof performance.

[0019] 2. Multiple first connecting blocks, multiple posts, multiple second connecting blocks and strips are connected to the first flame-retardant cardboard and the second flame-retardant cardboard. The multiple first connecting blocks, multiple posts, multiple second connecting blocks and strips are connected to the corrugated cardboard body by adhesive, which improves the stability of the connection between the first flame-retardant cardboard and the second flame-retardant cardboard and the corrugated cardboard body. It also facilitates stable support at the corners of the corrugated cardboard body, preventing the corners of the corrugated cardboard body from being flattened.

[0020] 3. By inserting the connecting posts into the interior of the connecting groove and using adhesive to bond multiple connecting posts together with the corresponding first connecting blocks, the stability of the connection between the first flame-retardant cardboard and the second flame-retardant cardboard is ensured. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the front structure of a composite fireproof corrugated cardboard according to this utility model;

[0022] Figure 2 This is a schematic diagram of the connection between the corrugated cardboard body and the fireproof film in this utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the corrugated cardboard body, two first flame-retardant cardboard sheets, and two second flame-retardant cardboard sheets connected in this utility model.

[0024] Figure 4 This is a schematic diagram of the structure connecting the corrugated cardboard body and multiple supporting paper tubes in this utility model;

[0025] Figure 5 This is a schematic diagram of the structure of multiple regular hexagonal support frames connected in this utility model;

[0026] Figure 6 This is a schematic diagram of the structure of the first flame-retardant cardboard, multiple first connecting blocks, and multiple inserts connected in this utility model;

[0027] Figure 7 This is a schematic diagram of the structure of the second flame-retardant cardboard, multiple second connecting blocks, inserts and multiple connecting posts in this utility model.

[0028] In the diagram: 1. Corrugated cardboard body; 2. Corrugated core; 3. First cardboard; 4. Reinforcing layer; 5. Second cardboard; 6. Waterproof paper layer; 7. Flame-retardant paper layer; 8. First flame-retardant cardboard; 9. Second flame-retardant cardboard; 10. Fireproof film; 11. Supporting paper tube; 12. First connecting block; 13. Insert post; 14. Second connecting block; 15. Insert strip; 16. Connecting groove; 17. Connecting post; 18. Regular hexagonal support frame; 19. Wear-resistant layer. DETAILED DESCRIPTION

[0029] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0030] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0031] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0032] Please see Figures 1-7A composite fire-resistant corrugated cardboard includes a corrugated cardboard body 1, which includes a corrugated core 2. Multiple supporting paper tubes 11 are fixedly connected inside the corrugated core 2 to provide stable support. First cardboard 3 is fixedly connected to both ends of the corrugated core 2. Reinforcing layers 4 are fixedly connected to the ends of the two first cardboard 3 furthest from the corrugated core 2. Each reinforcing layer 4 includes multiple regular hexagonal support frames 18, with adjacent regular hexagonal support frames 18 fixedly connected to provide stable support and prevent the corrugated cardboard from being flattened. The ends of the two reinforcing layers 4 furthest from the corrugated core 2 are fixedly connected to the first... Two cardboard sheets 5, each with a waterproof paper layer 6 fixedly connected to one end away from the corrugated core 2, a flame-retardant paper layer 7 fixedly connected to the outside of the waterproof paper layer 6, and a wear-resistant layer 19 fixedly connected to the side end of the flame-retardant paper layer 7 to increase its wear resistance. The front and rear ends of the corrugated cardboard body 1 are connected to a first flame-retardant cardboard sheet 8, and the left and right ends of the corrugated cardboard body 1 are connected to a second flame-retardant cardboard sheet 9. The side ends of the two second flame-retardant cardboard sheets 9 are connected to the side ends of the two first flame-retardant cardboard sheets 8. The connection between the two first flame-retardant cardboard sheets 8, the two second flame-retardant cardboard sheets 9 and the corrugated cardboard body 1 is covered with a fireproof film 10.

[0033] Specifically, the reinforcing layer 4 and the corrugated paper core 2 provide stable support for the corrugated cardboard. The waterproof paper layer 6 and the flame-retardant paper layer 7 ensure its waterproof and fireproof effects. The first flame-retardant paperboard 8 is connected to the front and rear ends of the corrugated cardboard body 1, and the second flame-retardant paperboard 9 is connected to the left and right ends of the corrugated cardboard body 1. At the same time, a fireproof film 10 is wrapped around the connection between the two first flame-retardant paperboards 8, the two second flame-retardant paperboards 9 and the corrugated cardboard body 1, which provides a fireproof effect on the side of the corrugated cardboard body 1. The fireproof film 10 also provides a certain degree of waterproofing, thereby preventing water and fire from entering the interior of the corrugated cardboard body 1 from the side, preventing the corrugated cardboard from burning inside, and improving its waterproof and fireproof effects.

[0034] Please see Figure 6 and Figure 7Two first flame-retardant cardboard pieces 8 are fixedly connected to the sides of the two cardboard pieces 8 at positions corresponding to the reinforcing layer 4, and two first flame-retardant cardboard pieces 8 are fixedly connected to the sides of the two cardboard pieces 8 at positions corresponding to the multiple supporting paper tubes 11, with the multiple inserts 13 inserted into the interior of the multiple supporting paper tubes 11 to facilitate support of the corners of the corrugated cardboard body 1. Two second flame-retardant cardboard pieces 9 are fixedly connected to the sides of the two cardboard pieces 9 at positions corresponding to the reinforcing layer 4, and the sides of the two second flame-retardant cardboard pieces 9 are fixedly connected to the corrugated paper core 2. The corrugated cardboard body 1 is fixedly connected with an insert 15, which is inserted into the middle of the two first cardboard 3 to facilitate support of the corners of the corrugated cardboard body 1. The first connecting blocks 12 on both sides of the first flame-retardant cardboard 8 are provided with connecting grooves 16. The side ends of the second flame-retardant cardboard 9 are fixedly connected with multiple connecting posts 17, which are inserted into the multiple connecting grooves 16 respectively. The corrugated cardboard body 1, the two first flame-retardant cardboard 8 and the two second flame-retardant cardboard 9 are tightly bonded together with fire-retardant adhesive to ensure its fire-retardant effect.

[0035] Specifically, multiple first connecting blocks 12, multiple inserts 13, multiple second connecting blocks 14, and insert strips 15 are connected to the first flame-retardant cardboard 8 and the second flame-retardant cardboard 9. The multiple first connecting blocks 12, multiple inserts 13, multiple second connecting blocks 14, and insert strips 15 are connected to the corrugated cardboard body 1 by adhesive, which improves the stability of the connection between the first flame-retardant cardboard 8 and the second flame-retardant cardboard 9 and the corrugated cardboard body 1. This facilitates stable support at the corners of the corrugated cardboard body 1 and prevents the corners of the corrugated cardboard body 1 from being flattened. By inserting the connecting posts 17 into the interior of the connecting grooves 16 and bonding the multiple connecting posts 17 with the corresponding first connecting blocks 12 by adhesive, the stability of the connection between the first flame-retardant cardboard 8 and the second flame-retardant cardboard 9 is ensured.

[0036] In summary,

[0037] In this design, adjacent structures are bonded together with fire-retardant adhesive. During bonding, the fire-retardant adhesive is applied evenly. This adhesive enhances fire resistance and prevents water from penetrating the corrugated cardboard. The reinforcing layer 4 and the corrugated core 2 provide stable support for the cardboard. The waterproof paper layer 6 and the flame-retardant paper layer 7 ensure both waterproofing and fire resistance. First flame-retardant cardboard 8 is connected to the front and rear ends of the corrugated cardboard body 1, and second flame-retardant cardboard 9 is connected to the left and right ends. A fire-retardant film 10 is wrapped around the connection points of the two first flame-retardant cardboard 8s, two second flame-retardant cardboard 9s, and the corrugated cardboard body 1, providing fire protection to the sides of the corrugated cardboard body 1. The fire-retardant film 10 also provides a degree of waterproofing. Multiple first connecting blocks 12, multiple inserts 13, multiple second connecting blocks 14, and insert strips 15 are connected to the first flame-retardant cardboard 8 and the second flame-retardant cardboard 9. The multiple first connecting blocks 12, multiple inserts 13, multiple second connecting blocks 14, and insert strips 15 are connected to the corrugated cardboard body 1 by adhesive, which improves the stability of the connection between the first flame-retardant cardboard 8 and the second flame-retardant cardboard 9 and the corrugated cardboard body 1. It facilitates stable support at the corners of the corrugated cardboard body 1 and prevents the corners of the corrugated cardboard body 1 from being flattened. By inserting the connecting posts 17 into the interior of the connecting grooves 16 and bonding the multiple connecting posts 17 with the corresponding first connecting blocks 12 by adhesive, the stability of the connection between the first flame-retardant cardboard 8 and the second flame-retardant cardboard 9 is ensured.

[0038] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A composite fire-resistant corrugated cardboard, comprising a corrugated cardboard body (1), characterized in that: The corrugated cardboard body (1) includes a corrugated core (2), with first cardboard (3) fixedly connected to both ends of the corrugated core (2). A reinforcing layer (4) is fixedly connected to the end of each of the two first cardboards (3) away from the corrugated core (2). A second cardboard (5) is fixedly connected to the end of each of the two reinforcing layers (4) away from the corrugated core (2). A waterproof paper layer (6) is fixedly connected to the end of each of the two second cardboards (5) away from the corrugated core (2). The corrugated cardboard body (1) is fixedly connected to the outside with a flame-retardant paper layer (7). The front and rear ends of the corrugated cardboard body (1) are connected to a first flame-retardant cardboard (8). The left and right ends of the corrugated cardboard body (1) are connected to a second flame-retardant cardboard (9). The side ends of the two second flame-retardant cardboards (9) are connected to the side ends of the two first flame-retardant cardboards (8). The connection between the two first flame-retardant cardboards (8), the two second flame-retardant cardboards (9) and the corrugated cardboard body (1) is covered with a fireproof film (10).

2. The composite fire-resistant corrugated cardboard according to claim 1, characterized in that: The corrugated paper core (2) is internally fixedly connected with multiple supporting paper tubes (11).

3. The composite fire-resistant corrugated cardboard according to claim 2, characterized in that: Two of the first flame-retardant paperboards (8) are fixedly connected to the positions corresponding to the reinforcing layer (4) with first connecting blocks (12). Two of the first flame-retardant paperboards (8) are fixedly connected to the positions corresponding to the positions of multiple supporting paper tubes (11) with inserts (13). Multiple inserts (13) are inserted into the interior of multiple supporting paper tubes (11).

4. The composite fire-resistant corrugated cardboard according to claim 1, characterized in that: Multiple second connecting blocks (14) are fixedly connected to the side ends of the two second flame-retardant paperboards (9) at the positions corresponding to the reinforcing layer (4). Inserts (15) are fixedly connected to the side ends of the two second flame-retardant paperboards (9) at the positions corresponding to the corrugated paper core (2). The inserts (15) are inserted into the middle of the two first paperboards (3).

5. The composite fire-resistant corrugated cardboard according to claim 1, characterized in that: The first connecting blocks (12) on both sides of the first flame-retardant paperboard (8) are provided with connecting grooves (16), and the side end of the second flame-retardant paperboard (9) is fixedly connected with multiple connecting posts (17), and the multiple connecting posts (17) are respectively inserted into the interior of the multiple connecting grooves (16).

6. The composite fire-resistant corrugated cardboard according to claim 1, characterized in that: The corrugated cardboard body (1), two first flame-retardant cardboard sheets (8) and two second flame-retardant cardboard sheets (9) are tightly bonded together with fire-retardant adhesive.

7. The composite fire-resistant corrugated cardboard according to claim 1, characterized in that: The reinforcement layer (4) includes multiple regular hexagonal support frames (18), and two adjacent regular hexagonal support frames (18) are fixedly connected.

8. The composite fire-resistant corrugated cardboard according to claim 1, characterized in that: The flame-retardant paper layer (7) is fixedly connected to a wear-resistant layer (19) at its side end.

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