A moisture-proof and damp-proof corrugated cardboard

Abstract

This utility model relates to the field of corrugated cardboard technology, specifically to a moisture-proof and damp-proof corrugated cardboard, comprising a corrugated cardboard layer, wherein the corrugated cardboard layer includes a corrugated paper layer, an upper O-ring support layer is embedded at the top of the corrugated paper layer, a lower O-ring support layer is embedded at the bottom of the corrugated paper layer, an upper adhesive layer is filled between the upper O-ring support layer and the corrugated paper layer, and a lower adhesive layer is filled between the lower O-ring support layer and the corrugated paper layer. By setting upper and lower O-ring support layers on the upper and lower sides of the corrugated paper layer respectively, the corrugated cardboard, during use, when subjected to external pressure and impact, utilizes the strong stability and balanced mechanical properties of the O-ring support structure to effectively enhance the transverse or longitudinal cushioning performance and compression resistance of the cardboard, improve the overall strength of the corrugated cardboard, and provide effective protection for the goods inside the packaging.

Description

Technical Field

[0001] This utility model relates to the field of corrugated cardboard technology, specifically to a moisture-proof and damp-proof corrugated cardboard. Background Technology

[0002] Corrugated cardboard plays several important roles. It provides reliable protection for goods, cushioning external forces with its structure to reduce damage from impacts and vibrations during transportation and handling. It also possesses good compressive strength, capable of withstanding stacks of considerable weight without deformation. Furthermore, it acts as a moisture and dust barrier, protecting goods from environmental influences. In addition, corrugated cardboard is easy to print on, allowing for the display of product information and promotional graphics. Its lightweight and environmentally friendly nature reduces packaging and transportation costs, making it a widely used packaging material.

[0003] A moisture-proof structure for corrugated cardboard, disclosed in authorization announcement number CN220129725U, solves the problem of poor moisture-proof performance of existing corrugated cardboard. It includes a first cardboard, with foam pellets fixedly installed on one side of the first cardboard. A corrugated body is fixedly installed inside the foam pellets. A first inner moisture-proof layer is fixedly installed on the other side of the first cardboard. A second inner moisture-proof layer is fixedly installed on the side of the first inner moisture-proof layer away from the first cardboard. A third inner moisture-proof layer is fixedly installed on the side of the second inner moisture-proof layer away from the first inner moisture-proof layer. A second cardboard is fixedly installed on the side of the foam pellets away from the first cardboard. A first outer moisture-proof layer is fixedly installed on the side of the second cardboard away from the foam pellets. A second outer moisture-proof layer is fixedly installed on the side of the first outer moisture-proof layer away from the second cardboard. This moisture-proof structure has excellent moisture-proof performance, preventing the corrugated cardboard from getting damp and protecting it from damage, thus improving its service life.

[0004] However, the overall structure of this utility model is relatively complex, making production inconvenient, and it lacks reinforcement measures for the corrugated paper, which easily leads to the deformation of the cardboard under pressure during use, affecting the packaging quality. To address this, we have proposed a moisture-proof and damp-proof corrugated cardboard, which solves the problems of insufficient strength and easy deformation of the corrugated paper in this utility model, and improves the practical effect of this utility model. Utility Model Content

[0005] The purpose of this invention is to provide a moisture-proof and damp-proof corrugated cardboard to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A moisture-proof and damp-proof corrugated cardboard includes a corrugated cardboard layer, the corrugated cardboard layer including a corrugated paper layer, an upper O-type support layer embedded at the top of the corrugated paper layer, a lower O-type support layer embedded at the bottom of the corrugated paper layer, an upper adhesive layer filling the space between the upper O-type support layer and the corrugated paper layer, and a lower adhesive layer filling the space between the lower O-type support layer and the corrugated paper layer. The upper and lower O-type support layers are made of corrugated base paper material, and both the upper and lower adhesive layers are made of starch-based adhesive.

[0008] By adopting the above technical solution, by setting an upper O-type support layer and a lower O-type support layer on the upper and lower sides of the corrugated paperboard, the corrugated paperboard can effectively enhance its transverse or longitudinal buffering performance and compression resistance when subjected to external pressure and impact during use, thanks to the strong stability and balanced mechanical properties of the O-type support structure. This improves the overall strength of the corrugated paperboard, greatly reduces the probability of paperboard deformation, and provides effective protection for the goods inside the packaging.

[0009] Preferably, a kraft paper layer is bonded to the top of the upper adhesive layer, and the surface of the kraft paper layer is coated with a paraffin-based moisture-proof coating.

[0010] By adopting the above technical solution: through the setting of kraft paper layer and paraffin-based moisture-proof coating, the kraft paper layer has a certain toughness and strength during use, providing basic support and protection for the entire cardboard, while the paraffin-based moisture-proof coating can effectively block external moisture and prevent the cardboard from getting damp inside.

[0011] Preferably, a moisture-proof paper layer is bonded to the bottom of the lower adhesive layer, and water-absorbing resin particles are uniformly added inside the moisture-proof paper layer.

[0012] By adopting the above technical solution, by adding water-absorbing resin particles to the material used to make the moisture-proof paper layer, moisture can be prevented from penetrating into the paperboard, effectively blocking moisture seepage and ensuring the quality of the products inside the packaging.

[0013] Preferably, the bottom end of the moisture-proof paper layer is coated with a first adhesive layer, and a reinforcing paper layer is bonded to the bottom surface of the first adhesive layer.

[0014] By adopting the above technical solution, the reinforcing paper layer and the moisture-proof paper layer are bonded together by setting the first adhesive layer.

[0015] Preferably, the bottom surface of the reinforcing paper layer is coated with a second adhesive layer, and the bottom surface of the second adhesive layer is bonded with an internal isolation layer.

[0016] By adopting the above technical solution, the inner isolation layer and the reinforcing paper layer are bonded together by setting the second adhesive layer.

[0017] Preferably, a protective film layer is adhered to the surface of the inner isolation layer, the inner isolation layer is made of kraft paper or kraft cardboard, and the protective film layer is made of polyethylene film.

[0018] By adopting the above technical solution, the internal isolation layer and protective film layer not only provide inner protection and support, but also further enhance the moisture-proof performance of the cardboard.

[0019] Preferably, the reinforcing paper layer is made of cardboard, and both the first adhesive layer and the second adhesive layer are made of starch-based adhesive.

[0020] By adopting the above technical solution, the overall strength and stability of the cardboard are increased by reinforcing the paper layer and utilizing the toughness of the cardboard, ensuring that it is not easily deformed in a humid environment.

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] 1. This moisture-proof corrugated cardboard, by setting an upper O-type support layer and a lower O-type support layer on the upper and lower sides of the corrugated cardboard layer respectively, can effectively enhance the transverse or longitudinal cushioning performance and compression resistance of the cardboard when it is squeezed and impacted by external factors during use. This is due to the strong stability and balanced mechanical properties of the O-type support structure, which improves the overall strength of the corrugated cardboard, greatly reduces the probability of cardboard deformation, and provides effective protection for the goods inside the packaging.

[0023] 2. This moisture-proof corrugated cardboard, by bonding a moisture-proof paper layer to the bottom of the corrugated cardboard layer and adding water-absorbing resin particles to the material of the moisture-proof paper layer, can prevent moisture from penetrating into the cardboard, effectively blocking moisture from seeping in and ensuring the quality of the products inside the packaging.

[0024] 3. This moisture-proof corrugated cardboard, by reinforcing the paper layers and utilizing the toughness of the cardboard, increases the overall strength and stability of the cardboard, ensuring that it is not easily deformed in humid environments. Attached Figure Description

[0025] Figure 1 A schematic diagram of the overall structure of a moisture-proof and damp-proof corrugated cardboard.

[0026] Figure 2 A schematic diagram of the cross-sectional structure of a moisture-proof corrugated cardboard.

[0027] Figure 3 A type of moisture-proof corrugated cardboard Figure 2 Enlarged view of point A in the middle;

[0028] Figure 4 A type of moisture-proof corrugated cardboard Figure 2 Enlarged diagram of point B in the middle.

[0029] In the diagram: 1. Corrugated paper layer; 2. Upper O-ring support layer; 3. Lower O-ring support layer; 4. Upper adhesive layer; 5. Lower adhesive layer; 6. Kraft paper layer; 7. Paraffin-based moisture-proof coating; 8. Moisture-proof paper layer; 9. First adhesive layer; 10. Reinforcing paper layer; 11. Second adhesive layer; 12. Internal isolation layer; 13. Protective film layer. Detailed Implementation

[0030] 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.

[0031] Please see Figures 1-4 As shown, this utility model provides a technical solution:

[0032] A moisture-proof and damp-proof corrugated cardboard includes a corrugated cardboard layer, which includes a corrugated paper layer 1. An upper O-type support layer 2 is embedded at the top of the corrugated paper layer 1, and a lower O-type support layer 3 is embedded at the bottom of the corrugated paper layer 1. An upper adhesive layer 4 is filled between the upper O-type support layer 2 and the corrugated paper layer 1, and a lower adhesive layer 5 is filled between the lower O-type support layer 3 and the corrugated paper layer 1. The upper O-type support layer 2 and the lower O-type support layer 3 are made of corrugated base paper material, and the upper adhesive layer 4 and the lower adhesive layer 5 are both made of starch-based adhesive.

[0033] The above solution involves setting an upper O-type support layer 2 and a lower O-type support layer 3 on the upper and lower sides of the corrugated paper layer 1, respectively. This allows the corrugated paperboard to effectively enhance its lateral or longitudinal cushioning and compression resistance when subjected to external pressure and impact during use. This is achieved by utilizing the strong stability and balanced mechanical properties of the O-type support structure, thereby improving the overall strength of the corrugated paperboard, greatly reducing the probability of paperboard deformation, and providing effective protection for the goods inside the packaging.

[0034] In this embodiment, preferably, a kraft paper layer 6 is bonded to the top of the upper adhesive layer 4, and the surface of the kraft paper layer 6 is coated with a paraffin-based moisture-proof coating 7.

[0035] Through the above solution: by setting the kraft paper layer 6 and the paraffin-based moisture-proof coating 7, the kraft paper layer 6 has a certain toughness and strength during use, providing basic support and protection for the entire cardboard, while the paraffin-based moisture-proof coating 7 can effectively block external moisture and prevent the cardboard from getting damp inside.

[0036] In this embodiment, preferably, a moisture-proof paper layer 8 is bonded to the bottom of the lower adhesive layer 5, and water-absorbing resin particles are uniformly added inside the moisture-proof paper layer 8.

[0037] The above solution involves adding water-absorbing resin particles to the material used in the moisture-proof paper layer 8, which prevents moisture from penetrating into the paperboard, effectively blocking moisture seepage and ensuring the quality of the products inside the packaging.

[0038] In this embodiment, preferably, the bottom end of the moisture-proof paper layer 8 is coated with a first adhesive layer 9, and the bottom surface of the first adhesive layer 9 is bonded with a reinforcing paper layer 10.

[0039] The above scheme involves bonding the reinforcing paper layer 10 and the moisture-proof paper layer 8 together by setting the first adhesive layer 9.

[0040] In this embodiment, preferably, the bottom surface of the reinforcing paper layer 10 is coated with a second adhesive layer 11, and the bottom surface of the second adhesive layer 11 is bonded with an internal isolation layer 12.

[0041] The above solution involves bonding the inner isolation layer 12 and the reinforcing paper layer 10 together using the second adhesive layer 11.

[0042] In this embodiment, preferably, a protective film layer 13 is attached to the surface of the inner isolation layer 12. The inner isolation layer 12 is made of kraft paper or kraft cardboard, and the protective film layer 13 is made of polyethylene film.

[0043] The above solution, through the setting of the internal isolation layer 12 and the protective film layer 13, not only provides inner protection and support, but also further enhances the moisture-proof performance of the cardboard.

[0044] In this embodiment, preferably, the reinforcing paper layer 10 is made of cardboard, and both the first adhesive layer 9 and the second adhesive layer 11 are made of starch-based adhesive.

[0045] The above solution utilizes the toughness of cardboard by reinforcing the paper layer 10, thereby increasing the overall strength and stability of the cardboard and ensuring that it is not easily deformed in humid environments.

[0046] In this embodiment, a moisture-proof corrugated cardboard is used by setting an upper O-ring support layer 2 and a lower O-ring support layer 3 on the upper and lower sides of the corrugated cardboard layer 1, respectively. During use, when subjected to external pressure and impact, the O-ring support structure, with its strong stability and balanced mechanical properties, effectively enhances the cardboard's lateral and longitudinal cushioning and compression resistance, improving its overall strength and significantly reducing the probability of deformation, thus providing effective protection for the goods inside the packaging. The kraft paper layer 6 and the paraffin-based moisture-proof coating 7 provide basic support and protection for the entire cardboard during use. The kraft paper layer 6 has a certain degree of toughness and strength, while the paraffin-based moisture-proof coating 7 effectively blocks external moisture, preventing the cardboard from becoming damp inside. The moisture-proof paper layer 8, bonded to the bottom surface of the corrugated cardboard layer 1, with water-absorbing resin particles added to its material, prevents moisture from penetrating into the cardboard, effectively blocking internal moisture penetration and ensuring the quality of the packaged products. By reinforcing the paper layer 10, the toughness of the cardboard is utilized to increase the overall strength and stability of the cardboard, ensuring that it is not easily deformed in a humid environment. Finally, an inner isolation layer 12 and a protective film layer 13 are set near the inside of the packaging, which not only provide inner protection and support, but also further enhance the moisture-proof performance of the cardboard.

[0047] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A moisture and humidity resistant corrugated paperboard comprising a corrugated paperboard layer, characterized by: The corrugated cardboard layer includes a wavy corrugated paper layer (1), with an upper O-type support layer (2) embedded at the top of the wavy corrugated paper layer (1) and a lower O-type support layer (3) embedded at the bottom of the wavy corrugated paper layer (1). An upper adhesive layer (4) is filled between the upper O-type support layer (2) and the wavy corrugated paper layer (1), and a lower adhesive layer (5) is filled between the lower O-type support layer (3) and the wavy corrugated paper layer (1). The upper O-type support layer (2) and the lower O-type support layer (3) are made of corrugated paper material; Both the upper adhesive layer (4) and the lower adhesive layer (5) are made of starch-based adhesive.

2. A moisture and humidity resistant corrugated paperboard according to claim 1, characterized in that: The top of the upper adhesive layer (4) is bonded with a kraft paper layer (6), and the surface of the kraft paper layer (6) is coated with a paraffin-based moisture-proof coating (7).

3. A moisture and humidity resistant corrugated paperboard according to claim 1, characterized in that: The bottom of the lower adhesive layer (5) is bonded with a moisture-proof paper layer (8), and the moisture-proof paper layer (8) contains water-absorbing resin particles uniformly added inside.

4. The moisture-proof and damp-proof corrugated cardboard according to claim 3, characterized in that: The bottom end of the moisture-proof paper layer (8) is coated with a first adhesive layer (9), and a reinforcing paper layer (10) is bonded to the bottom surface of the first adhesive layer (9).

5. A moisture-proof and damp-proof corrugated cardboard according to claim 4, characterized in that: The bottom surface of the reinforcing paper layer (10) is coated with a second adhesive layer (11), and the bottom surface of the second adhesive layer (11) is bonded with an internal isolation layer (12).

6. The moisture-proof and damp-proof corrugated cardboard according to claim 5, characterized in that: The inner isolation layer (12) is covered with a protective film layer (13), and the inner isolation layer (12) is made of kraft paper or kraft cardboard.

7. A moisture-proof and damp-proof corrugated cardboard according to claim 6, characterized in that: The protective film layer (13) is made of polyethylene film material.

8. A moisture-proof and damp-proof corrugated cardboard according to claim 4, characterized in that: The reinforcing paper layer (10) is made of cardboard, and both the first adhesive layer (9) and the second adhesive layer (11) are made of starch-based adhesive.

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