Moisture resistant corrugated paperboard

Abstract

The utility model discloses a kind of moisture-proof corrugated paperboards, belong to corrugated paperboard technical field, including bottom plate, bottom plate is provided with two, two bottom plate is symmetrically arranged up and down, the side of two bottom plate mutually far away is bonded with first waterproof film, the side of first waterproof film far away from bottom plate is bonded with wear-resistant layer, the side of two bottom plate mutually close is provided with corrugated layer, corrugated layer cross section is wavy, corrugated layer is respectively and two bottom plate fixed connection, corrugated layer includes support corrugated and second waterproof film, support corrugated is provided with two, second waterproof film is arranged between two support corrugated, second waterproof film and two support corrugated mutually bond, can realize the waterproof of corrugated paperboard, guarantee mechanical strength.

Description

Technical Field

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

[0002] Corrugated paper is a sheet-like material made by bonding linerboard and corrugated paper formed by corrugating rollers. It is generally divided into single-wall and double-wall corrugated paperboard, and further classified into five types according to the size of the corrugations: A, B, C, E, and F. Corrugated paper has been invented and used for over a century. It has advantages such as low cost, light weight, easy processing, high strength, excellent printability, and convenient storage and handling. More than 80% of corrugated paper can be recycled. Corrugated paper can be used for packaging food or digital products, is relatively environmentally friendly, and has a wide range of applications.

[0003] Corrugated cardboard boxes must not come into contact with water during transportation and storage. Water will cause the corrugated cardboard to become soft and lose its mechanical strength, and will also cause the contents of the box to become damp, resulting in economic losses. Although manufacturers have made improvements to corrugated cardboard in the current technology, simply applying a waterproof layer to the outer wall of the corrugated cardboard does not achieve an ideal moisture-proof effect. To address the above problems, a solution is proposed below. Utility Model Content

[0004] In view of the problems existing in the prior art, the purpose of this utility model is to provide a moisture-proof corrugated cardboard that can make the corrugated cardboard waterproof and ensure its mechanical strength.

[0005] To solve the above problems, the present invention adopts the following technical solution.

[0006] A moisture-proof corrugated cardboard includes two base plates arranged symmetrically vertically. A first waterproof membrane is adhered to the side of the two base plates that is far from each other. A wear-resistant layer is adhered to the side of the first waterproof membrane that is far from the base plates. A corrugated layer is provided on the side of the two base plates that is close to each other. The corrugated layer has a wavy cross-section and is fixedly connected to the two base plates. The corrugated layer includes supporting corrugations and a second waterproof membrane. Two supporting corrugations are provided. The second waterproof membrane is arranged between the two supporting corrugations and is adhered to the two supporting corrugations.

[0007] Preferably, a plurality of support plates are provided between the two base plate layers, and the plurality of support plates are respectively fixedly and alternately on the sides of the two base plates that are close to each other, and the other end of the support plate is fixedly connected to the corrugated layer.

[0008] Preferably, both the first waterproof membrane and the second waterproof membrane are polyethylene films.

[0009] Preferably, several independent placement cavities are formed between the corrugated layer and the two base plates, and the support plate is located in the middle of the placement cavity.

[0010] Preferably, one end of the support plate is provided with a bearing surface that contacts the corrugated layer, and the other end of the support plate is provided with a support block that contacts the base plate.

[0011] Compared with existing technologies, the advantages of this utility model are:

[0012] I. This solution forms a double-sided waterproof barrier by bonding a first waterproof membrane to each of the two base plates on opposite sides. The two first waterproof membranes protect the base plates between them, separating them from external liquids and thus achieving a waterproof effect. By installing a wear-resistant layer on the side of the first waterproof membrane, direct contact between the first waterproof membrane and the outside environment can be avoided, preventing the membrane from cracking and providing protection. Furthermore, the design of a second waterproof membrane laminated between the two supporting corrugations acts as a divider, preventing the entire corrugated layer from becoming wet. When one side of the supporting corrugation becomes wet, the other side remains dry, thus providing continuous support and ensuring the overall support effect of the corrugated cardboard.

[0013] Second, the support plate provides support to the corrugated layer, improving the overall support effect and ensuring strength.

[0014] Third, polyethylene film has good flexibility, can be bent and folded without breaking easily, has a good barrier effect against moisture, can effectively prevent packaged items from getting damp, has strong resistance to most common chemicals, and has a certain tensile and tear resistance, and can withstand a certain amount of external force.

[0015] Fourth, the placement chamber is arranged independently, which can separate the support plate and block water vapor.

[0016] Fifth, the increased contact surface of the support surface ensures the stability of the support. At the same time, the support block provides support to the support plate, preventing it from tipping over and ensuring the stability of the support plate. Attached Figure Description

[0017] Figure 1 This is a front view structural diagram of the present utility model;

[0018] Figure 2 This is an enlarged structural schematic diagram of A in this utility model.

[0019] Explanation of the labels in the diagram:

[0020] 1. Base plate; 2. First waterproof membrane; 3. Wear-resistant layer; 4. Corrugated layer; 5. Supporting corrugations; 6. Second waterproof membrane; 7. Support plate; 8. Placement cavity; 9. Receiving surface; 10. Support block. Detailed Implementation

[0021] Example 1:

[0022] Please see Figure 1-2 A moisture-proof corrugated cardboard includes a base plate 1, of which two base plates 1 are arranged symmetrically in an upper and lower position. A first waterproof membrane 2 is glued to the side of the two base plates 1 that is far apart from each other. The first waterproof membrane 2 is made of polyethylene film. By installing the first waterproof membrane 2 on the side of the two base plates 1 that is far apart from each other, the two first waterproof membranes 2 can protect the base plate 1 between them, separating external liquids from the base plate 1, thereby achieving a waterproof effect. The polyethylene film has good flexibility, can be bent and folded without easily breaking, has a good barrier effect against moisture, can effectively prevent the packaged items from getting damp, has strong resistance to most common chemicals, has a certain tensile and tear resistance, and can withstand a certain amount of external force.

[0023] A wear-resistant layer 3 is bonded to the side of the first waterproof membrane 2 away from the base plate 1. The wear-resistant layer 3 is made of kraft paper. By installing the wear-resistant layer 3 on the side of the first waterproof membrane 2, the first waterproof membrane 2 can be prevented from directly contacting the outside, which would cause the waterproof membrane to break. In addition, the kraft paper itself has a certain degree of water resistance, which further increases the overall waterproof strength.

[0024] Two base plates 1 are provided with corrugated layers 4 on their adjacent sides. The corrugated layers 4 have a wavy cross-section and are fixedly connected to the two base plates 1 respectively. Several independent placement cavities 8 are formed between the corrugated layers 4 and the two base plates 1. A support plate 7 is provided inside the placement cavity 8. The support plate 7 is arranged vertically and is located in the middle of the placement cavity 8. One end of the support plate 7 is fixedly connected to the adjacent side of the base plate 1, and the other end of the support plate 7 is fixedly connected to the corrugated layer 4. One end of the support plate 7 is provided with a bearing surface 9 that contacts the corrugated layer 4, and the other end of the support plate 7 is provided with a support block 10 that contacts the base plate 1. The support plate 7 provides support for the corrugated layer 4, improves the overall support effect, ensures strength, and increases the contact surface to ensure the stability of the support. At the same time, the support block 10 provides support for the support plate 7 to prevent it from tipping over and ensure the stability of the support plate 7.

[0025] The corrugated layer 4 includes supporting corrugations 5 and a second waterproof membrane 6. There are two supporting corrugations 5, and the second waterproof membrane 6 is arranged between the two supporting corrugations 5. The second waterproof membrane 6 and the two supporting corrugations 5 are bonded to each other, and the second waterproof membrane 6 and the first waterproof membrane 2 are made of the same material, namely polyethylene film. By composited with the second waterproof membrane 6 between the two supporting corrugations 5, it can play a dividing role and prevent the entire corrugated layer 4 from being wet. When one side of the supporting corrugation 5 of the corrugated layer 4 is wet, the other side of the supporting corrugation 5 remains dry, so as to continuously provide support and ensure the support effect of the entire corrugated cardboard. This design effectively prevents moisture from spreading in the corrugated layer and ensures that the other side can still provide stable support when one side is damp.

[0026] Working principle:

[0027] The outermost wear-resistant layer 3, in contact with the goods or the ground, protects the first waterproof membrane 2 from damage caused by friction. The wear-resistant layer 3, being kraft paper, has a certain degree of water resistance, providing initial waterproofing. The first waterproof membrane 2 then acts as a moisture and water barrier, protecting the inner base plate 1 and corrugated layer 4. This arrangement, with the first waterproof membrane 2 installed on both sides, prevents liquids from both the ground and the goods, providing dual protection and enhancing waterproofing.

[0028] Finally, the base plate 1 and the corrugated layer 4 provide support. In addition, the design of double-layered supporting corrugations 5 and supporting plates 7 can improve the support. Furthermore, a second waterproof membrane 6 is set between the two layers of supporting corrugations 5 to separate the two supporting corrugations 5, so as to prevent the liquid from wetting the other supporting corrugations 5 when one side of the supporting corrugations 5 is wet, thus slowing down the water vapor penetration rate.

Claims

1. A moisture-proof corrugated cardboard, characterized in that: The system includes a base plate (1), of which two base plates (1) are provided, and the two base plates (1) are arranged symmetrically from top to bottom. A first waterproof membrane (2) is bonded to the side of the two base plates (1) that is far from each other. A wear-resistant layer (3) is bonded to the side of the first waterproof membrane (2) that is far from the base plate (1). A corrugated layer (4) is provided on the side of the two base plates (1) that is close to each other. The corrugated layer (4) has a wavy cross-section. The corrugated layer (4) is fixedly connected to the two base plates (1) respectively. The corrugated layer (4) includes a supporting corrugation (5) and a second waterproof membrane (6). There are two supporting corrugations (5). The second waterproof membrane (6) is arranged between the two supporting corrugations (5). The second waterproof membrane (6) and the two supporting corrugations (5) are bonded to each other.

2. The moisture-proof corrugated cardboard according to claim 1, characterized in that: A plurality of support plates (7) are provided between the two base plates (1) layers. The plurality of support plates (7) are respectively fixed to the sides of the two base plates (1) that are close to each other. The other end of the support plate (7) is fixedly connected to the corrugated layer (4).

3. The moisture-proof corrugated cardboard according to claim 1, characterized in that: Both the first waterproof membrane (2) and the second waterproof membrane (6) are polyethylene films.

4. The moisture-proof corrugated cardboard according to claim 2, characterized in that: Several independent placement cavities (8) are formed between the corrugated layer (4) and the two base plates (1), and the support plate (7) is located in the middle of the placement cavity (8).

5. A moisture-proof corrugated cardboard according to claim 2, characterized in that: One end of the support plate (7) is provided with a bearing surface (9) that contacts the corrugated layer (4), and the other end of the support plate (7) is provided with a support block (10) that contacts the bottom plate (1).

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