Symmetrical corrugated board

Abstract

The utility model discloses a symmetrical corrugated board which comprises a corrugated board body, longitudinal symmetrical creases are arranged on the two sides of the corrugated board body, transverse symmetrical creases are arranged at the two ends of the corrugated board body, and the corrugated board body is composed of a waterproof film, an outer paperboard base layer, corrugated paper A, a functional sandwich layer, corrugated paper B and an inner paperboard base layer. The functional sandwich layer comprises a reinforcing layer located in the middle, the reinforcing layer is specifically a carbon fiber net layer and is arranged in a corrugated mode, and a polyurethane elastic layer A and a polyurethane elastic layer B are arranged on the outer surface layer and the inner surface layer of the reinforcing layer respectively. According to the symmetrical corrugated board, the overall strength of the corrugated board body is greatly improved, the pressure-resistant effect is improved, the anti-puncture effect is remarkable, the elasticity and the toughness are improved, the buffering effect is outstanding after the corrugated board body is processed into a packaging carton, and the protection performance on a packaged product is improved.

Description

Technical Field

[0001] This utility model relates to the field of corrugated cardboard technology, specifically to a symmetrical corrugated cardboard. Background Technology

[0002] Corrugated cardboard is a multi-layer composite material made by bonding at least one layer of corrugated core paper and one or more layers of cardboard (boxboard). During the manufacturing process of corrugated cardboard, specific processes and designs are used to make the cardboard exhibit structural symmetry. This symmetry may be reflected in the number of layers, flute distribution, and corrugation direction of the cardboard.

[0003] Symmetrical corrugated cardboard has low overall strength, poor pressure resistance, and insignificant puncture resistance. Furthermore, it has low elasticity and toughness, resulting in weak cushioning effect and low protection for packaged products when the corrugated cardboard is processed into packaging boxes. Utility Model Content

[0004] To address the problems in the existing technology, this utility model provides a symmetrical corrugated cardboard. The symmetrical corrugated cardboard greatly improves the overall strength of the corrugated cardboard body, enhances its pressure resistance and puncture resistance, and increases its elasticity and toughness. This makes the corrugated cardboard body, when processed into packaging cartons, provide outstanding cushioning and greater protection for the packaged products.

[0005] The technical solution adopted by this utility model to solve its technical problem is a symmetrical corrugated cardboard, including a corrugated cardboard body. The two sides of the corrugated cardboard body are provided with longitudinal symmetrical folds and the two ends of the corrugated cardboard body are provided with transverse symmetrical folds. The corrugated cardboard body is composed of a waterproof membrane, an outer cardboard base layer, corrugated paper A, a functional sandwich layer, corrugated paper B and an inner cardboard base layer. The functional sandwich layer includes a reinforcing layer located in the middle. The reinforcing layer is specifically a carbon fiber mesh layer and is arranged in a corrugated pattern. The outer surface layer and the inner surface layer of the reinforcing layer are respectively provided with a polyurethane elastic layer A and a polyurethane elastic layer B.

[0006] The outer surface of the functional sandwich layer is provided with an outer cardboard base layer, and corrugated paper A is provided between the outer cardboard base layer and the functional sandwich layer. The inner surface of the functional sandwich layer is provided with an inner cardboard base layer, and corrugated paper B is provided between the inner cardboard base layer and the functional sandwich layer.

[0007] By adopting the above technical solutions, symmetrical corrugated cardboard greatly improves the overall strength of the corrugated cardboard body, enhances its pressure resistance and puncture resistance, and increases its elasticity and toughness. This makes the corrugated cardboard body, when processed into packaging cartons, provide outstanding cushioning and greater protection for the packaged products.

[0008] Specifically, elastic protrusions are equidistantly arranged on one side of the polyurethane elastic layer A and polyurethane elastic layer B opposite to the reinforcing layer. The elastic protrusions are integrally formed with polyurethane elastic layer A and polyurethane elastic layer B and are made of the same material.

[0009] By adopting the above technical solution, the elastic protrusions on the inner side of polyurethane elastic layer A and polyurethane elastic layer B are used to increase the overall elasticity, thereby increasing the cushioning and protection.

[0010] Specifically, the outer surface layer of the outer cardboard base layer is provided with a waterproof membrane, and the waterproof membrane is specifically made of polyethylene material.

[0011] Specifically, both the outer cardboard base layer and the inner cardboard base layer are made of kraft paper.

[0012] Specifically, the inner surface of the corrugated cardboard body is provided with a circular protrusion integrally formed with the inner cardboard base layer.

[0013] By adopting the above technical solution, the circular protrusions on the inner side of the corrugated cardboard body are used to process the cardboard box, which facilitates the cushioning of the contents and reduces damage.

[0014] The beneficial effects of this utility model are as follows: The symmetrical corrugated cardboard described in this utility model utilizes longitudinal and transverse symmetrical folds to facilitate folding of the corrugated cardboard body, making it easy to handle and store. The circular protrusions on the inner side of the corrugated cardboard body, when processed into a carton, provide cushioning for the contents and reduce damage. The reinforcing layer, specifically a carbon fiber mesh layer, significantly improves the overall strength of the corrugated cardboard body, enhancing its pressure resistance and puncture resistance. Furthermore, the symmetrical corrugated cardboard described in this utility model utilizes polyurethane elastic layers A and B to greatly improve the elasticity and toughness of the corrugated cardboard body, resulting in excellent cushioning after processing into a packaging carton, thus increasing the protection of the packaged products. The waterproof membrane, specifically made of polyethylene material, provides significant waterproof and seepage-resistant effects, preventing moisture penetration. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the main material layer structure of the corrugated cardboard of this utility model;

[0018] Figure 3 This is a schematic diagram of the functional sandwich layer structure of this utility model.

[0019] In the diagram: 1. Corrugated cardboard body; 2. Longitudinal symmetrical creases; 3. Lateral symmetrical creases; 4. Circular protrusions; 5. Waterproof membrane; 6. Outer cardboard base layer; 7. Corrugated paper A; 8. Functional sandwich layer; 9. Corrugated paper B; 10. Inner cardboard base layer; 11. Elastic protrusions; 12. Reinforcing layer; 13. Polyurethane elastic layer A; 14. Polyurethane elastic layer B. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0021] To achieve symmetrical corrugated cardboard, the overall strength of the corrugated cardboard body 1 is greatly improved, enhancing its pressure resistance and puncture resistance. Furthermore, increased elasticity and toughness result in superior cushioning after the corrugated cardboard body 1 is processed into packaging boxes, thus increasing the protection of the packaged products. Figure 1-3 As shown, the present invention discloses a symmetrical corrugated cardboard, comprising a corrugated cardboard body 1. The corrugated cardboard body 1 has longitudinal symmetrical folds 2 on both sides and transverse symmetrical folds 3 at both ends. The corrugated cardboard body 1 is composed of a waterproof membrane 5, an outer cardboard base layer 6, corrugated paper A7, a functional sandwich layer 8, corrugated paper B9, and an inner cardboard base layer 10. The functional sandwich layer 8 includes a reinforcing layer 12 located in the middle. The reinforcing layer 12 is specifically a carbon fiber mesh layer arranged in a corrugated pattern. The outer surface layer and the inner surface layer of the reinforcing layer 12 are respectively provided with a polyurethane elastic layer A13 and a polyurethane elastic layer B14.

[0022] The outer surface of the functional sandwich layer 8 is provided with an outer cardboard base layer 6 and a corrugated paper A7 is provided between the outer cardboard base layer 6 and the functional sandwich layer 8. The inner surface of the functional sandwich layer 8 is provided with an inner cardboard base layer 10 and a corrugated paper B9 is provided between the inner cardboard base layer 10 and the functional sandwich layer 8.

[0023] When in use, symmetrical corrugated cardboard greatly improves the overall strength of the corrugated cardboard body 1, enhances its pressure resistance and puncture resistance, and increases its elasticity and toughness. This makes the corrugated cardboard body 1, when processed into packaging cartons, provide outstanding cushioning and greater protection for the packaged products.

[0024] For example, such as Figure 3 As shown, the present invention also includes elastic protrusions 11 evenly distributed on the side of the polyurethane elastic layer A13 and polyurethane elastic layer B14 opposite to the reinforcing layer 12. The elastic protrusions 11 are integrally formed with the polyurethane elastic layer A13 and the polyurethane elastic layer B14 and are made of the same material.

[0025] When in use, the elastic protrusions 11 on the inner side of the polyurethane elastic layer A13 and polyurethane elastic layer B14 are used to increase the overall elasticity, thereby increasing the cushioning and protection.

[0026] For example, such as Figure 2 As shown, the present invention also includes a waterproof membrane 5 on the outer surface layer of the outer cardboard base layer 6, and the waterproof membrane 5 is specifically made of polyethylene material.

[0027] When in use, the waterproof membrane 5 is made of polyethylene material, which has a significant waterproof and seepage-proof effect, preventing moisture from penetrating.

[0028] For example, such as Figure 2 As shown, the present invention also includes that the outer cardboard base layer 6 and the inner cardboard base layer 10 are both made of kraft paper material.

[0029] When in use, kraft paper material has a certain strength, is flat and clean, easy to process, and is environmentally friendly and safe.

[0030] For example, such as Figure 1 , 2 As shown, the present invention also includes a circular protrusion 4 integrally formed with the inner cardboard base layer 10 on the inner surface of the corrugated cardboard body 1.

[0031] When in use, the circular protrusions 4 on the inner side of the corrugated cardboard body 1 are used to process the cardboard box, which can cushion the contents and reduce damage.

[0032] In use, the longitudinal symmetrical folds 2 and the transverse symmetrical folds 3 facilitate the folding of the corrugated cardboard body 1, making it easy to transport and store. The circular protrusions 4 on the inner side of the corrugated cardboard body 1 are used to process it into a carton, which facilitates the cushioning of the contents and reduces damage.

[0033] The use of reinforcing layer 12, specifically a carbon fiber mesh layer, greatly improves the overall strength of the corrugated cardboard body 1, enhances its pressure resistance, and significantly improves its puncture resistance. The use of polyurethane elastic layer A13 and polyurethane elastic layer B14 greatly improves the elasticity and toughness of the corrugated cardboard body 1, resulting in a superior cushioning effect after the corrugated cardboard body 1 is processed into a packaging carton, thus increasing the protection of the packaged products.

[0034] The waterproof membrane 5 is made of polyethylene material, which has a significant waterproof and seepage-proof effect, preventing moisture from penetrating. The outer cardboard base layer 6 and the inner cardboard base layer 10 are both made of kraft paper material. Kraft paper material has a certain strength, is flat and clean, easy to process, and is environmentally friendly and safe.

[0035] In the description of this utility model, it should be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used to facilitate the description of this utility model and simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. In this utility model, unless otherwise expressly specified and limited, the terms "installation," "setting," "connection," "fixing," and "screw-on," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection.

[0037] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection of the present utility model.

Claims

1. A symmetrical corrugated cardboard, characterized in that, The corrugated cardboard body (1) is provided with longitudinal symmetrical creases (2) on both sides and transverse symmetrical creases (3) at both ends. The corrugated cardboard body (1) is composed of a waterproof membrane (5), an outer cardboard base layer (6), corrugated paper A (7), a functional sandwich layer (8), corrugated paper B (9) and an inner cardboard base layer (10). The functional sandwich layer (8) includes a reinforcing layer (12) located in the middle. The reinforcing layer (12) is specifically a carbon fiber mesh layer and is arranged in a corrugated pattern. The outer surface layer and the inner surface layer of the reinforcing layer (12) are respectively provided with a polyurethane elastic layer A (13) and a polyurethane elastic layer B (14). The outer surface of the functional sandwich layer (8) is provided with an outer cardboard base layer (6) and a corrugated paper A (7) is provided between the outer cardboard base layer (6) and the functional sandwich layer (8). The inner surface of the functional sandwich layer (8) is provided with an inner cardboard base layer (10) and a corrugated paper B (9) is provided between the inner cardboard base layer (10) and the functional sandwich layer (8).

2. The symmetrical corrugated cardboard according to claim 1, characterized in that, The polyurethane elastic layer A (13) and polyurethane elastic layer B (14) are provided with elastic protrusions (11) at equal intervals on the side opposite to the reinforcing layer (12). The elastic protrusions (11) are integrally formed with the polyurethane elastic layer A (13) and polyurethane elastic layer B (14) and are made of the same material.

3. The symmetrical corrugated cardboard according to claim 1, characterized in that, The outer cardboard base layer (6) is provided with a waterproof membrane (5), and the waterproof membrane (5) is specifically made of polyethylene material.

4. The symmetrical corrugated cardboard according to claim 1, characterized in that, Both the outer cardboard base layer (6) and the inner cardboard base layer (10) are made of kraft paper.

5. A symmetrical corrugated cardboard according to claim 1, characterized in that, The inner surface of the corrugated cardboard body (1) is provided with a circular protrusion (4) integrally formed with the inner cardboard base layer (10).

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