Damp-proof corrugated board

Abstract

The utility model discloses a moisture-proof corrugated board, which relates to the field of corrugated boards and is characterized in that the moisture-proof corrugated board comprises an outer layer, a core layer and an inner layer, one side of the outer layer far away from the core layer is coated with a waterproof coating, one side of the outer layer far away from the core layer is fixedly connected with a plurality of wear-resistant bumps, and the wear-resistant bumps penetrate through the waterproof coating. The end surfaces of the wear-resistant bumps far away from the core layer are positioned on the same plane. According to the corrugated board, all the wear-resistant bumps form a wear-resistant surface on the outer layer of the waterproof coating, so that the corrugated board can slide along other surfaces, the waterproof coating is protected, the wear of the waterproof coating is prevented, the moisture resistance of the corrugated board is ensured, and the service life of the corrugated board is prolonged. The polyformaldehyde resin material has better wear resistance and lower friction coefficient, so that the service life of the wear-resistant convex block and the smoothness of the surface of the wear-resistant convex block are ensured, and the paraffin can play a role in surface lubrication while playing a role in water prevention.

Description

Technical Field

[0001] The utility model relates to the field of corrugated paperboard, and more specifically, to a moisture-proof corrugated paperboard. Background Art

[0002] Corrugated cardboard is a common packaging material, which is composed of a core paper layer formed by folded paper and a flat surface paper layer. Existing corrugated cardboard is coated with a waterproof coating on the surface to prevent moisture, thereby preventing the cardboard from getting wet and causing a decrease in strength. However, during use, when the outer surface of the corrugated cardboard is rubbed, the waterproof coating will also cause local wear, causing the corrugated cardboard to easily become damp.

[0003] Therefore, a new solution needs to be proposed to solve this problem. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model aims to provide a moisture-proof corrugated paperboard.

[0005] The above technical purpose of the utility model is achieved through the following technical scheme: a moisture-proof corrugated cardboard, comprising an outer layer, a core layer, and an inner layer, wherein the side of the outer layer away from the core layer is coated with a waterproof coating, and the side of the outer layer away from the core layer is fixedly connected with a plurality of wear-resistant protrusions, the wear-resistant protrusions penetrate the waterproof coating, and the end faces of the plurality of wear-resistant protrusions away from one end of the core layer are located in the same plane.

[0006] The utility model is further configured as follows: a sealing rubber block is fixedly connected to one side of the core layer close to the outer layer, and the wear-resistant protrusion is fixedly connected to the core layer through the sealing rubber block.

[0007] The utility model is further configured as follows: a plurality of connection protrusions are fixedly connected to one side of the wear-resistant protrusion close to the core layer, and the plurality of connection protrusions are embedded in the sealing rubber block.

[0008] The utility model is further configured as follows: a circular arc transition is provided between the side wall of the wear-resistant protrusion and a surface of the wear-resistant protrusion away from the core layer.

[0009] The utility model is further configured as follows: the wear-resistant protrusion is made of polyoxymethylene resin.

[0010] The utility model is further configured as follows: the waterproof coating is made of paraffin.

[0011] In summary, the utility model has the following beneficial effects: all the wear-resistant protrusions form a wear-resistant surface on the outer layer of the waterproof coating, which protects the waterproof coating while ensuring that the corrugated cardboard can slide against other surfaces, prevents the waterproof coating from being worn, and ensures the moisture-proofness of the corrugated cardboard. The polyoxymethylene resin material has good wear resistance and a low friction coefficient, which ensures the service life of the wear-resistant protrusions and the smoothness of their surface. Paraffin can not only play a role in waterproofing but also play a role in surface lubrication. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a partial cross-sectional view of the utility model;

[0013] Figure 2 It is a schematic diagram of the structure of the wear-resistant protrusion and the connecting protrusion in the utility model;

[0014] Figure 3 for Figure 1 Enlarged view of point A in the middle.

[0015] In the figure: 1, outer layer; 2, core layer; 3, inner layer; 4, waterproof coating; 5, wear-resistant protrusion; 6, sealing rubber block; 7, connecting protrusion. DETAILED DESCRIPTION

[0016] The utility model is described in detail below in conjunction with the accompanying drawings and embodiments.

[0017] Embodiment: A moisture-proof corrugated paperboard, such as Figure 1 , Figure 3 As shown, it includes an outer layer 1, a core layer 2, and an inner layer 3. The side of the outer layer 1 away from the core layer 2 is coated with a waterproof coating 4, and the side of the outer layer 1 away from the core layer 2 is fixedly connected with a plurality of wear-resistant protrusions 5. The wear-resistant protrusions 5 penetrate the waterproof coating 4, and the end faces of the plurality of wear-resistant protrusions 5 away from one end of the core layer 2 are located in the same plane. The side of the core layer 2 close to the outer layer 1 is fixedly connected with a sealing block 6, and the wear-resistant protrusions 5 are fixedly connected to the core layer 2 through the sealing block 6. The wear-resistant protrusions 5 are made of polyformaldehyde resin, and the waterproof coating 4 is made of paraffin.

[0018] Specifically, during use, the outer layer 1 faces the outside, and a plurality of through holes are opened on the outer layer 1. After the outer layer 1, the core layer 2, and the inner layer 3 are compounded, glass glue is injected into the through holes to form a sealing rubber block 6, and the wear-resistant protrusion 5 is covered on the through hole. Finally, the waterproof coating 4 is applied. The sealing rubber block 6 plays a fixing role between the wear-resistant protrusion 5 and the core layer 2, and between the wear-resistant protrusion 5 and the outer layer 1. At the same time, the sealing rubber block 6 fills the through holes to prevent water vapor from entering the interior of the corrugated cardboard. The wear-resistant protrusion 5 protrudes outward relative to the waterproof coating 4. All the wear-resistant The bump 5 forms a wear-resistant surface outside the waterproof coating 4, which protects the waterproof coating 4 while ensuring that the corrugated cardboard can slide against other surfaces, preventing the waterproof coating 4 from being worn, and ensuring the moisture resistance of the corrugated cardboard. The polyoxymethylene resin material has good wear resistance and a low friction coefficient, ensuring the service life of the wear-resistant bump 5 and the smoothness of its surface. Paraffin can not only play a waterproof role but also a surface lubrication role. The diameter of the wear-resistant bump 5 is larger than the diameter of the through hole, preventing the wear-resistant bump 5 from passing through the through hole during installation.

[0019] like Figure 2 , Figure 3 As shown, a plurality of connecting protrusions 7 are fixedly connected to one side of the wear-resistant protrusion 5 close to the core layer 2, and the plurality of connecting protrusions 7 are embedded in the sealing block 6. There is an arc transition between the side wall of the wear-resistant protrusion 5 and the side of the wear-resistant protrusion 5 away from the core layer 2. Specifically, in this embodiment, two connecting protrusions 7 are integrally formed on a wear-resistant protrusion 5, and the connecting protrusions 7 are inserted into the sealing block 6. The sealing block 6 fills the gap between the connecting protrusions 7, thereby improving the connection strength between the sealing block 6 and the wear-resistant protrusion 5. The side of the wear-resistant protrusion 5 in contact with the outside world is chamfered to avoid stress concentration at the edge of the wear-resistant protrusion 5.

[0020] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A moisture-proof corrugated paperboard, characterized in that: The invention comprises an outer layer (1), a core layer (2), and an inner layer (3); the side of the outer layer (1) away from the core layer (2) is coated with a waterproof coating (4); the side of the outer layer (1) away from the core layer (2) is fixedly connected with a plurality of wear-resistant protrusions (5); the wear-resistant protrusions (5) penetrate the waterproof coating (4); and the end surfaces of the plurality of wear-resistant protrusions (5) away from the core layer (2) are located in the same plane.

2. The moisture-proof corrugated paperboard according to claim 1, characterized in that: A sealing rubber block (6) is fixedly connected to one side of the core layer (2) close to the outer layer (1), and the wear-resistant protrusion (5) is fixedly connected to the core layer (2) via the sealing rubber block (6).

3. The moisture-proof corrugated paperboard according to claim 2, characterized in that: A plurality of connection protrusions (7) are fixedly connected to one side of the wear-resistant protrusion (5) close to the core layer (2), and the plurality of connection protrusions (7) are embedded in the sealing rubber block (6).

4. The moisture-proof corrugated paperboard according to claim 3, characterized in that: There is an arc transition between the side wall of the wear-resistant protrusion (5) and a surface of the wear-resistant protrusion (5) away from the core layer (2).

5. The moisture-proof corrugated paperboard according to claim 1, characterized in that: The wear-resistant protrusion (5) is made of polyoxymethylene resin.

6. The moisture-proof corrugated paperboard according to claim 1, characterized in that: The waterproof coating (4) is made of paraffin.

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