Corrugated board capable of preventing liquid permeation

Abstract

The utility model discloses a corrugated board capable of preventing liquid permeation, and relates to the technical field of corrugated boards. The corrugated board comprises surface paper, a permeable layer is arranged on the surface of the surface paper, a water absorption layer is arranged on the surface of the permeable layer, a protective film is arranged on the water absorption layer, and air holes are formed in the surface of the protective film. Firstly, the water absorption layer absorbs moisture in air through the air holes in the protective film, after the water absorption layer absorbs the moisture, the moisture is transmitted to the permeation layer, then the permeation layer transmits the moisture to the surface paper, finally, the surface paper transmits the moisture to the paper core, and after the paper core and the surface paper receive the moisture of the permeation layer, the paper core and the surface paper are sealed. At the moment, the corrugated board cannot generate fiber explosion or deformation due to over-drying, so that the service life of the corrugated board is prolonged, and the environmental applicability of the corrugated board is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of corrugated paperboards, in particular to a corrugated paperboard which is resistant to liquid penetration. Background Art

[0002] Corrugated cardboard is a multi-layer adhesive body, which is composed of at least one layer of corrugated core paper and one layer of cardboard. It has high mechanical strength and can withstand collisions and falls during transportation. 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.

[0003] The existing liquid-proof corrugated cardboard is light in weight and easy to carry. It also has high mechanical strength and can withstand collisions and falls during transportation. However, when the corrugated cardboard is in a relatively dry use environment, the corrugated cardboard is prone to cracking, causing the corrugated cardboard to deform or delaminate, reducing the service life of the corrugated cardboard. Therefore, it is urgent to design a corrugated cardboard that can cope with dry environments. Utility Model Content

[0004] Based on this, the purpose of the utility model is to provide a corrugated paperboard that is resistant to liquid penetration, so as to solve the technical problem that the corrugated paperboard breaks due to an overly dry environment.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a liquid-proof corrugated paperboard, comprising a face paper, a permeable layer is arranged above the surface of the face paper, a water-absorbing layer is arranged above the surface of the permeable layer, a protective film is arranged above the water-absorbing layer, and air holes are arranged on the surface of the protective film.

[0006] By adopting the above technical solution, when the corrugated cardboard is in a relatively dry condition, the water-absorbing layer absorbs moisture in the air through the air holes on the protective film. After absorbing the moisture, the water-absorbing layer transfers the moisture to the permeable layer, the permeable layer transfers the moisture to the face paper, and the face paper transfers the moisture to the paper core.

[0007] Furthermore, a plurality of anti-skid pads are arranged above the surface of the protective film to provide the user with frictional support for the corrugated cardboard.

[0008] By adopting the above technical solution, the anti-slip pad can provide stronger friction between the user and the corrugated cardboard, making the user more labor-saving when carrying the corrugated cardboard, and preventing items in the corrugated cardboard from falling off or falling and being damaged, thereby improving the convenience of using the corrugated cardboard.

[0009] Furthermore, a paper core is arranged between the two facial papers.

[0010] By adopting the above technical solution, the paper core mainly provides support and cushioning force for the corrugated cardboard, so that the corrugated cardboard can protect the packaged items while maintaining its shape. It can also play the role of heat insulation, moisture isolation, dust prevention, etc., thereby improving the environmental applicability of the corrugated cardboard.

[0011] Furthermore, the bottom layer of the facial paper is provided with a waterproof layer, which is the inner surface used in the product packaging box.

[0012] By adopting the above technical solution, the waterproof layer protects the packaging from being soaked by water, prevents the infiltration of items inside the corrugated cardboard, and avoids the items inside the corrugated cardboard from being soaked by water, thereby greatly improving the safety of the corrugated cardboard.

[0013] Furthermore, the water-absorbing layer is made of plant fiber cotton and is coated with a water-absorbing layer for absorbing external moisture.

[0014] By adopting the above technical solution, the plant fiber cotton is a natural fiber material, which is harmless to the human body and the environment, has high water absorption performance, can quickly absorb a large amount of water, and greatly improves the practicality of the corrugated cardboard.

[0015] Furthermore, a plurality of air holes are provided to provide a through passage for external moisture and the water absorption layer.

[0016] By adopting the above technical solution and setting a plurality of air holes, the water-absorbing layer can more conveniently absorb moisture in the air, so that the corrugated cardboard in drying will not burst, and the structure of the corrugated limiter will be more stable and more resistant to pressure.

[0017] Furthermore, the water-absorbing layer, the permeable layer, the surface paper and the waterproof layer are all bonded to each other by adhesive.

[0018] By adopting the above technical solution, the adhesive can connect the two materials together at the same time. The adhesive can make the surfaces of different objects have good bonding or sealing possibilities, making the structure between the water-absorbing layer, the permeable layer, the surface paper and the waterproof layer more solid and will not fall off easily.

[0019] In summary, the utility model mainly has the following beneficial effects:

[0020] 1. The utility model uses a water-absorbing layer. When the corrugated board is in a relatively dry state, the water-absorbing layer first absorbs moisture in the air through the air holes on the protective film. After the water-absorbing layer absorbs the moisture, it immediately transfers the moisture to the permeable layer. Then the permeable layer transfers the moisture to the face paper. Finally, the face paper transfers the moisture to the paper core. After the paper core and the face paper receive the moisture from the permeable layer, the corrugated board will not have fiber bursts or deformation due to being too dry, thereby extending the service life of the corrugated board and greatly improving the environmental applicability of the corrugated board.

[0021] 2. The utility model provides an anti-skid pad, which is provided on the outer layer of the protective film, so that users can enhance the friction between each other when carrying corrugated cardboard, and the items will not fall off due to slipping hands, thereby greatly improving the safety of the use of corrugated cardboard. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0023] Figure 2 It is a cross-sectional structural schematic diagram of the utility model;

[0024] Figure 3 For this utility model Figure 2 Schematic diagram of the structure enlarged at point A in the middle.

[0025] In the figure: 1. Protective film; 2. Breathable holes; 3. Water-absorbing layer; 4. Permeable layer; 5. Facial paper; 6. Waterproof layer; 7. Paper core; 8. Anti-slip mat. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.

[0027] The following describes an embodiment of the utility model based on its overall structure.

[0028] Embodiment 1:

[0029] A corrugated paperboard that is impermeable to liquids, such as Figure 1-Figure 3As shown, it includes facial paper 5, a permeable layer 4 is arranged on the surface of the facial paper 5, a water-absorbing layer 3 is arranged on the surface of the permeable layer 4, a protective film 1 is arranged on the water-absorbing layer 3, and air holes 2 are arranged on the surface of the protective film 1. When the corrugated cardboard is in a relatively dry state, the water-absorbing layer 3 absorbs moisture in the air through the air holes 2 on the protective film 1. After the water-absorbing layer 3 absorbs the moisture, it transfers the moisture to the permeable layer 4. The permeable layer 4 transfers the moisture to the facial paper 5, and the facial paper 5 transfers the moisture to the paper core 7. When the facial paper 5 and the paper core 7 receive moisture, the corrugated cardboard will not burst, thereby improving the environmental applicability of the corrugated cardboard.

[0030] Embodiment 2:

[0031] See also Figure 1 , Figure 2 A plurality of anti-skid pads 8 are arranged on the surface of the protective film 1 to provide the user with friction support for the corrugated cardboard. The anti-skid pads 8 can make the friction between the user and the corrugated cardboard stronger, making it easier for the user to carry the corrugated cardboard, and preventing the items in the corrugated cardboard from falling off or being damaged, thereby improving the convenience of using the corrugated cardboard. Moreover, the weight of the corrugated cardboard is light, which is particularly convenient for transportation and handling.

[0032] See also Figure 2 , Figure 3 A paper core 7 is arranged between the two face papers 5. The paper core 7 mainly provides support and buffering force for the corrugated cardboard, so that the corrugated cardboard can protect the packaged items while maintaining its shape. It can also play the role of heat insulation, moisture insulation, dust prevention, etc., which improves the environmental applicability of the corrugated cardboard, thereby protecting the integrity of the items inside the corrugated cardboard.

[0033] See also Figure 1 , Figure 2 , Figure 3 The bottom layer of the face paper 5 is provided with a waterproof layer 6, which is the inner surface of the product packaging box. The waterproof layer 6 protects the packaged goods from being soaked by water, prevents the infiltration of the items inside the corrugated cardboard, and avoids the items inside the corrugated cardboard from being soaked by water, thereby greatly improving the safety of the corrugated cardboard and meeting the protection needs of different products.

[0034] See also Figure 1 , Figure 2 , Figure 3 The material of the water-absorbing layer 3 is plant fiber cotton, and it is coated with a water-absorbing layer to absorb external moisture. Plant fiber cotton is a natural fiber material that is harmless to the human body and the environment. It has high water absorption performance and can quickly absorb a large amount of water, which greatly improves the practicality of the corrugated cardboard and effectively protects different products.

[0035] See also Figure 1There are multiple air holes 2 for providing a through channel between external moisture and the water-absorbing layer 3. The multiple air holes 2 can make it easier for the water-absorbing layer 3 to absorb moisture from the air, so that the corrugated cardboard in the dry state will not burst, and the structure of the corrugated limiter will be more stable and more resistant to pressure. At the same time, the structural characteristics of the protective film 1 are used to improve the protectiveness of the corrugated cardboard.

[0036] See also Figure 1 , Figure 2 , Figure 3 The water-absorbing layer 3, the permeable layer 4, the face paper 5 and the waterproof layer 6 are all bonded together by adhesive. The adhesive can connect the two materials together at the same time. The adhesive can make the surfaces of different objects have good bonding or sealing possibilities, making the connection between the water-absorbing layer 3, the permeable layer 4, the face paper 5 and the waterproof layer 6 more firm and will not fall off easily, making the structure of the corrugated cardboard more stable and firm, and enhancing the strength of the corrugated cardboard.

[0037] The implementation principle of the utility model is as follows: when the corrugated cardboard is in a relatively dry environment, its unique water absorption mechanism begins to work. First, the water absorption layer 3 actively absorbs moisture from the air through the air holes 2 on the protective film 1. After absorbing enough moisture, this layer will effectively transfer the moisture to the permeable layer 4. Subsequently, the permeable layer 4 further disperses the moisture evenly to the face paper 5. Finally, the moisture is transferred to the paper core 7 by the face paper 5. Through this series of moisture transfer processes, the corrugated cardboard can maintain a suitable humidity after the paper core 7 and the face paper 5 fully absorb the moisture transferred from the permeable layer 4, thereby avoiding the problem of fiber bursting or deformation caused by excessive drying.

[0038] Parts not involved in the present invention are the same as the prior art or can be implemented by using the prior art, and will not be described in detail here.

[0039] Although an embodiment of the utility model has been shown and described, this specific embodiment is only an explanation of the utility model and is not a limitation of the utility model. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contribution as needed without departing from the principles and purpose of the utility model. However, as long as they are within the scope of the claims of the utility model, they are protected by patent law.

Claims

1. A liquid-proof corrugated paperboard, characterized in that: It comprises facial paper (5), a permeable layer (4) is arranged above the surface of the facial paper (5), a water-absorbing layer (3) is arranged above the surface of the permeable layer (4), a protective film (1) is arranged above the water-absorbing layer (3), and air permeable holes (2) are arranged on the surface of the protective film (1).

2. The liquid-proof corrugated paperboard according to claim 1, characterized in that: A plurality of anti-slip pads (8) are arranged above the surface of the protective film (1) to provide a friction support force for the user on the corrugated cardboard.

3. The liquid-proof corrugated paperboard according to claim 1, characterized in that: A paper core (7) is arranged between the two facial papers (5).

4. The liquid-proof corrugated paperboard according to claim 1, characterized in that: The bottom layer of the facial paper (5) is provided with a waterproof layer (6), which is the inner usage surface of the product packaging box.

5. The liquid-proof corrugated paperboard according to claim 1, characterized in that: The water-absorbing layer (3) is made of plant fiber cotton and is coated with a water-absorbing layer for absorbing external moisture.

6. The liquid-proof corrugated paperboard according to claim 1, characterized in that: The air holes (2) are provided in plurality and are used to provide a through passage for external moisture to communicate with the water absorbing layer (3).

7. The liquid-proof corrugated paperboard according to claim 1, characterized in that: The water absorbing layer (3), the permeable layer (4), the surface paper (5) and the waterproof layer (6) are all bonded together by an adhesive.

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