Film-coated waterproof corrugated paperboard

Abstract

The utility model relates to corrugated board technical field especially relates to a film-coated waterproof corrugated board. Its technical scheme includes: corrugated board main part, corrugated board main part includes two groups of outer layer paper board, is provided with corrugated core paper between two groups of outer layer paper board, corrugated core paper is set up in bimodal wavy shape, the outer surface of corrugated board main part is provided with waterproof film-coated layer, and the edge position of corrugated board main part on waterproof film-coated layer is handled heat compression sealing, and the outside of waterproof film-coated layer is provided with titanium dioxide photocatalyst coating. The utility model discloses waterproof film-coated layer is set up on the surface of corrugated board body, effectively improves the waterproof performance of corrugated board, can keep self structure strength in humid environment, greatly reduces the risk of packing damage due to damp, and simultaneously realizes the self-cleaning function of surface through nanometer titanium dioxide photocatalyst coating on the surface of waterproof film-coated layer, does not need manual frequent cleaning, saves cleaning cost and time.

Description

Technical Field

[0001] This utility model relates to the field of corrugated cardboard technology, and in particular to a laminated waterproof corrugated cardboard. Background Technology

[0002] Corrugated cardboard is a widely used packaging material, typically composed of multiple layers of paper. Its unique corrugated structure provides excellent cushioning and strength, protecting goods during transportation and storage. However, existing ordinary corrugated cardboard has poor waterproof performance. When exposed to damp environments or splashes of water, moisture easily penetrates the cardboard, causing it to soften and lose strength, thus affecting its protective effect and potentially damaging the packaged goods. For example, packaging made of ordinary corrugated cardboard is highly susceptible to these problems when stored in humid warehouses or transported in rainy weather. Furthermore, the surface of ordinary corrugated cardboard easily attracts dust and oil stains, which are difficult to clean due to its material properties. This not only affects the aesthetics of the packaging but may also negatively impact the packaging of products with high hygiene requirements, such as food and pharmaceuticals. Therefore, we propose a laminated waterproof corrugated cardboard. Utility Model Content

[0003] The purpose of this invention is to address the problems existing in the background technology by proposing a coated waterproof corrugated cardboard.

[0004] The technical solution of this utility model is as follows: A coated waterproof corrugated cardboard includes a corrugated cardboard body, the corrugated cardboard body includes two sets of outer cardboard layers, a corrugated core paper is disposed between the two sets of outer cardboard layers, the corrugated core paper is arranged in a bidirectional wavy shape, a waterproof coating layer is disposed on the outer surface of the corrugated cardboard body, the waterproof coating layer is subjected to heat-press sealing treatment at the edge position of the corrugated cardboard body, and a titanium dioxide photocatalytic coating is disposed on the outer side of the waterproof coating layer.

[0005] Preferably, the upper and lower sides of the corrugated core paper are bonded to the two sets of outer cardboard layers on one side close to each other by an adhesive to form an integral unit.

[0006] Preferably, the corrugated core paper is provided with reinforcing ribs between the bidirectional wave crests, and the mounting end of the reinforcing ribs is fixedly connected to the corrugated core paper.

[0007] Preferably, the outer surface of the corrugated cardboard body is uniformly coated with hot melt adhesive, and the inner side of the waterproof coating layer is bonded to the outer surface of the corrugated cardboard body by hot melt adhesive.

[0008] Preferably, the hot-pressed sealing area on the waterproof coating layer is folded at the edge of the corrugated cardboard body.

[0009] Preferably, the titanium dioxide photocatalytic coating is nanoscale.

[0010] Compared with the prior art, the present invention has the following beneficial technical effects:

[0011] This utility model has a simple overall structure. By adopting a structural design using high-strength kraft paper and corrugated core paper, it ensures that the corrugated cardboard has good cushioning performance and structural strength. By setting a waterproof coating layer on the surface of the corrugated cardboard, the waterproof performance of the cardboard is effectively improved, enabling it to maintain its structural strength in humid environments. This greatly reduces the risk of packaging damage caused by moisture, extends the service life of the packaging, and improves the protection of the packaged items. At the same time, the nano-level titanium dioxide photocatalytic coating on the outer surface of the waterproof coating layer achieves a self-cleaning function, which can automatically decompose surface dirt and oil stains, eliminating the need for frequent manual cleaning, saving cleaning costs and time, and maintaining the aesthetic appearance of the packaging. It is particularly suitable for product packaging with high hygiene requirements. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 for Figure 1 Enlarged structural diagram at point A in the middle;

[0014] Figure 3 This is an exploded view of the structure of this utility model.

[0015] Reference numerals: 1. Corrugated cardboard body; 11. Outer cardboard; 12. Corrugated core paper; 13. Reinforcing rib; 2. Waterproof coating layer; 3. Titanium dioxide photocatalytic coating. Detailed Implementation

[0016] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments. Example

[0017] like Figure 1-3As shown, this utility model proposes a laminated waterproof corrugated cardboard, comprising a corrugated cardboard body 1, which includes two sets of outer cardboard layers 11. The outer cardboard layers 11 are made of high-strength kraft paper, which has high toughness and tensile strength, providing basic structural strength for the corrugated cardboard and resisting external tearing and impact. A corrugated core paper 12 is disposed between the two sets of outer cardboard layers 11. The upper and lower sides of the corrugated core paper 12 are bonded to the two sets of outer cardboard layers 11 on the side closest to each other by adhesive to form an integral structure. The corrugated core paper 12 is arranged in a bidirectional wavy pattern. Reinforcing ribs 13 are provided between the bidirectional wavy crests on the corrugated core paper 12. The mounting ends of the reinforcing ribs 13 are fixedly connected to the corrugated core paper 12. The arrangement of the corrugated core paper 12 and the reinforcing ribs 13 greatly increases the cushioning performance of the paperboard. When subjected to external impact, the wavy structure can absorb energy through deformation, protecting the packaged items from damage. The coordinated arrangement of the outer paperboard 11, the corrugated core paper 12 and the reinforcing ribs 13 ensures that the corrugated paperboard has good cushioning performance and structural strength.

[0018] A waterproof coating layer 2 is provided on the outer surface of the corrugated cardboard body 1. Hot melt adhesive is evenly coated on the outer surface of the corrugated cardboard body 1. The inner side of the waterproof coating layer 2 is bonded to the outer surface of the corrugated cardboard body 1 via hot melt adhesive. After the hot melt adhesive melts upon heating, it tightly bonds the waterproof coating layer 2 to the corrugated cardboard body 1, forming a strong bond upon cooling. This ensures that the waterproof coating layer 2 will not peel off during long-term use. The waterproof coating layer 2 has excellent waterproof performance, effectively preventing moisture from penetrating into the interior of the corrugated cardboard body 1. The waterproof coating layer 2 is located at the edges of the corrugated cardboard body 1. The waterproof film layer 2 is heat-sealed at the edge of the corrugated cardboard body 1. The waterproof film layer 2 is folded at the edge of the corrugated cardboard body 1 and heat-sealed to form a closed edge structure, which can prevent moisture from penetrating from the edge of the corrugated cardboard. The waterproof film layer 2 improves the waterproof performance of the corrugated cardboard, enabling it to maintain its structural strength in a humid environment, greatly reducing the risk of packaging damage due to moisture, extending the service life of the packaging, and improving the protection of the packaged items.

[0019] A titanium dioxide photocatalytic coating 3 is provided on the outer side of the waterproof coating layer 2. The titanium dioxide photocatalytic coating 3 is made of nano-sized titanium dioxide photocatalytic material, which is mixed with a suitable dispersant and solvent to prepare a uniform photocatalytic coating. Sodium polyacrylate is generally selected as the dispersant, and deionized water or ethanol can be used as the solvent. The mixing ratio is adjusted according to the actual situation to ensure that the photocatalytic coating has good dispersibility and stability. The titanium dioxide photocatalytic coating 3 is nano-sized and is uniformly coated on the surface of the waterproof coating layer 2. The titanium dioxide photocatalytic coating 3 has photocatalytic activity and can decompose organic pollutants on the surface under light conditions. The titanium dioxide photocatalytic coating 3 can realize the self-cleaning function of the corrugated cardboard surface, which can automatically decompose the surface dust and oil stains, etc., without the need for frequent manual cleaning, saving cleaning costs and time, while maintaining the aesthetics of the packaging. It is especially suitable for product packaging with high hygiene requirements.

[0020] In this embodiment, firstly, high-strength kraft paper of suitable specifications is selected as the outer cardboard 11, and the kraft paper is cut to the required size. Then, corrugated core paper 12 with a bidirectional corrugated structure and reinforcing ribs 13 is selected and cut to fit the size of the outer cardboard 11. Then, using an environmentally friendly adhesive, the two sets of outer cardboard 11 and corrugated core paper 12 are sequentially bonded together. Through processes such as hot pressing and drying, the layers are ensured to be tightly bonded to form the corrugated cardboard body 1. Then, hot melt adhesive is evenly applied to the outer surface of the corrugated cardboard body 1. Then, a waterproof coating layer 2 is covered on the surface of the corrugated cardboard body 1 coated with hot melt adhesive. Hot pressing is performed using a hot pressing device to melt the hot melt adhesive and fully fill the waterproof coating layer 2 and the corrugated cardboard body 1. The gaps between the layers allow for a strong bond after cooling. After the waterproof coating layer 2 is applied, the edges of the corrugated cardboard body 1 are treated. The excess portion of the waterproof coating layer 2 at the edges is folded to the inside of the edges of the corrugated cardboard body 1. Then, a hot-pressing device is used to seal the folded portion, ensuring a good seal at the edges and preventing moisture from penetrating. Finally, a spraying device is used to evenly spray the photocatalytic coating onto the outer surface of the waterproof coating layer 2, forming a uniform titanium dioxide photocatalytic coating 3. After coating, the corrugated cardboard is air-dried at room temperature or baked at 40-60℃ to ensure that the titanium dioxide photocatalytic coating 3 is firmly adhered to the surface of the waterproof coating layer 2, thus completing the production of this coated waterproof corrugated cardboard.

[0021] The above-described specific embodiments are merely preferred embodiments of the present invention. Based on the technical solution of the present invention and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above-described specific embodiments.

Claims

1. A laminated waterproof corrugated cardboard, comprising a corrugated cardboard body (1), characterized in that: The corrugated cardboard body (1) includes two sets of outer cardboard (11), and a corrugated core paper (12) is provided between the two sets of outer cardboard (11). The corrugated core paper (12) is arranged in a bidirectional wavy shape. A waterproof coating layer (2) is provided on the outer surface of the corrugated cardboard body (1). The waterproof coating layer (2) is heat-sealed at the edge of the corrugated cardboard body (1). A titanium dioxide photocatalytic coating (3) is provided on the outer side of the waterproof coating layer (2).

2. The coated waterproof corrugated cardboard according to claim 1, characterized in that, The upper and lower sides of the corrugated core paper (12) are bonded to the two outer paperboards (11) on one side close to each other by an adhesive to form a whole.

3. The coated waterproof corrugated cardboard according to claim 1, characterized in that, The corrugated core paper (12) is provided with reinforcing ribs (13) between the bidirectional wave crests, and the mounting end of the reinforcing ribs (13) is fixedly connected to the corrugated core paper (12).

4. The coated waterproof corrugated cardboard according to claim 1, characterized in that, The outer surface of the corrugated cardboard body (1) is uniformly coated with hot melt adhesive, and the inner side of the waterproof coating layer (2) is bonded to the outer surface of the corrugated cardboard body (1) by hot melt adhesive.

5. The coated waterproof corrugated cardboard according to claim 1, characterized in that, The waterproof coating layer (2) is folded at the edge of the corrugated cardboard body (1) at the hot-press sealing treatment point.

6. The coated waterproof corrugated cardboard according to claim 1, characterized in that, The titanium dioxide photocatalytic coating (3) is nanoscale.

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