Waterproof carton with bottom moisture-proof function

Abstract

The utility model discloses a waterproof carton convenient to bottom moistureproof, including carton body, the inside of carton body is provided with accommodating cavity, the outside moistureproof layer, reinforcing support layer and inside moistureproof layer are followed to the carton body from outside to inside, the outside of the four corners of the bottom of carton body is provided with the support corner, the inside of carton body is provided with reinforcing foot, and the waterproof carton multiple gradient moistureproof, and the moistureproof effect is better, and the bearing capacity is stronger.

Description

Technical Field

[0001] This utility model belongs to the field of cardboard box equipment technology, specifically relating to a waterproof cardboard box that is easy to prevent moisture from the bottom. Background Technology

[0002] The core characteristics of cardboard boxes are their lightweight, low cost, good protection (especially compression cushioning), excellent printability, and environmental recyclability. These advantages make them an irreplaceable mainstay in the packaging industry.

[0003] Existing cardboard boxes require moisture-proof treatment on the outside in scenarios such as cold chain logistics, high-humidity warehousing, and precision instrument transportation. Especially when stacked at the bottom, moisture can easily seep in, causing deformation and making them difficult to handle. Existing cardboard boxes generally use a drying compartment at the bottom, which is filled with desiccant for waterproofing. However, long-term use has revealed that the drying compartment not only has low support strength, but also cannot be covered in time at the corners, making it prone to dampness. Utility Model Content

[0004] The purpose of this invention is to provide a waterproof cardboard box that facilitates bottom moisture protection, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A waterproof cardboard box for easy bottom moisture protection includes a cardboard box body with an internal cavity. The cardboard box body consists of an outer moisture-proof layer, a reinforcing support layer, and an inner moisture-proof layer, arranged from the outside to the inside. Support corners are provided at the four corners of the bottom of the cardboard box body, and reinforcing feet are provided inside the cardboard box body.

[0007] By adopting the above technical solution, when in use, the supporting corners at the four bottom corners of the carton and the internal reinforcing feet provide support and reinforcement for the carton body. This not only achieves spatial isolation between the carton and the ground, but also effectively isolates moisture through the three-layer double moisture-proof layer, thus ensuring the moisture-proof performance of the carton.

[0008] Preferably, the reinforcing support layer adopts a corrugated core with a B-shaped configuration.

[0009] By adopting the above technical solution, the B-type corrugated core has the advantages of high flatness, printability, high planar pressure resistance and lower cost compared with the traditional UV-type corrugated core. It is easy to use, and the B-type corrugated core allows for spatial isolation between the outer and inner moisture-proof layers, further improving moisture-proof efficiency.

[0010] Preferably, the gaps in the corrugated core are filled with a supporting skeleton.

[0011] By adopting the above technical solution, the support frame can further improve the support strength of the bottom of the carton.

[0012] Preferably, a desiccant is provided in the middle of the support frame.

[0013] By adopting the above technical solution, the desiccant can fully absorb the moisture that has seeped into the reinforcing support layer, ensuring the dryness of the bottom of the carton.

[0014] Preferably, the external moisture-proof layer is made of moisture-proof coated paper.

[0015] By adopting the above technical solution, the moisture-proof coated paper can effectively isolate external moisture.

[0016] Preferably, the internal moisture-proof layer is made of flat kraft paper.

[0017] By adopting the above technical solution, flat kraft paper can not only provide good load-bearing capacity, but also further improve the ability of the carton body to isolate moisture.

[0018] The technical effects and advantages of this utility model are as follows:

[0019] This product provides gradient moisture protection through a three-level protection system of "barrier-absorption-hydrophobicity" to achieve long-lasting moisture protection.

[0020] The internal support frame of this product serves the dual functions of reinforcing ribs and drying chamber, resulting in high space utilization.

[0021] This product is especially suitable for scenarios such as cold chain logistics, high humidity warehousing, and precision instrument transportation. While maintaining the advantages of lightweight and environmental protection of cardboard boxes, it solves the problem of bottom moisture prevention. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the internal structure of this utility model.

[0024] In the diagram: 1. Carton body; 2. Receiving cavity; 3. External moisture-proof layer; 4. Reinforcing support layer; 5. Internal moisture-proof layer; 6. Support corners; 7. Reinforcing feet; 8. Support frame; 9. Desiccant pack. Detailed Implementation

[0025] The following will refer to the appendix in the embodiments of this utility model. Figures 1-2The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The specific embodiments described herein are merely used to explain this utility model and are not intended to limit this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] Example:

[0027] like Figures 1-2 As shown, this utility model provides a waterproof cardboard box that facilitates bottom moisture protection, including a cardboard box body 1. The cardboard box body 1 has an internal cavity 2. From the outside to the inside, the cardboard box body 1 consists of an outer moisture-proof layer 3, a reinforcing support layer 4, and an inner moisture-proof layer 5. Support corner brackets 6 are provided at the four corners of the bottom of the cardboard box body 1, and reinforcing feet 7 are provided inside the cardboard box body 1. In use, the support corner brackets 6 at the four corners of the bottom of the cardboard box body 1 and the reinforcing feet 7 inside the cardboard box body 1 provide support and reinforcement. This not only achieves spatial isolation between the cardboard box and the ground, but also effectively isolates moisture through the three-layer double moisture-proof layer, thereby ensuring the moisture-proof performance of the cardboard box.

[0028] The reinforcing support layer 4 adopts a B-shaped corrugated core. The crest surface of the B-shaped corrugated core is pre-coated with a hot melt adhesive layer, which is then hot-pressed together with the outer moisture-proof layer 3 and the inner moisture-proof layer 5. Compared with the traditional UV-type corrugated core, the B-shaped corrugated core has the advantages of high flatness, printability, high planar pressure resistance and lower cost, making it convenient to use. In addition, the B-shaped corrugated core allows for spatial isolation between the outer moisture-proof layer 3 and the inner moisture-proof layer 5, further improving the moisture-proof efficiency.

[0029] The gaps in the corrugated core are filled with a support frame 8, which is a crisscrossing PP plastic truss. Its grid size is smaller than the wavelength of the B-type corrugated core. The support frame 8 can further improve the support strength of the bottom of the carton.

[0030] A desiccant pack 9 is installed in the middle of the support frame 8. The desiccant pack 9 is filled with a mixture of silica gel particles and calcium chloride and covered with a biodegradable PLA film. The desiccant pack 9 can fully absorb the moisture that has seeped into the reinforced support layer 4, ensuring the dryness of the bottom of the carton.

[0031] The outer moisture-proof layer 3 is made of moisture-proof coated paper, which is double-sided PE coated with a coating thickness of ≥30μm. The moisture-proof coated paper can effectively isolate external moisture.

[0032] The internal moisture-proof layer 5 is made of flat kraft paper, and the surface of the flat kraft paper is coated with an organic silicone hydrophobic coating. The flat kraft paper not only provides good load-bearing capacity, but also further improves the ability of the carton body 1 to isolate moisture.

[0033] In summary, this waterproof cardboard box employs multiple moisture-proof features, including support corner clips 6, an external moisture-proof layer 3, a reinforced support layer 4, and an internal moisture-proof layer 5. The support corner clips 6 provide the first layer of spatial isolation, followed by moisture protection through the coated paper of the external moisture-proof layer 3. The reinforced support layer 4 then forms the second layer of spatial isolation, and desiccant packs 9 are filled inside to absorb moisture. Finally, the internal moisture-proof layer 5 provides the final barrier, resulting in excellent moisture protection. Furthermore, the support corner clips 6, reinforced support layer 4, and support frame 8 reinforce and support the items placed inside the box, enhancing its load-bearing capacity.

[0034] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A waterproof cardboard box that facilitates bottom moisture protection, characterized in that: The carton includes a carton body (1), which has an internal cavity (2). The carton body (1) consists of an outer moisture-proof layer (3), a reinforcing support layer (4), and an inner moisture-proof layer (5) from the outside to the inside. Support corners (6) are provided at the four corners of the bottom of the carton body (1), and reinforcing feet (7) are provided inside the carton body (1).

2. A waterproof cardboard box for easy bottom moisture protection according to claim 1, characterized in that: The reinforced support layer (4) adopts a corrugated core with a B-shaped configuration.

3. A waterproof cardboard box for easy bottom moisture protection according to claim 2, characterized in that: The gaps in the corrugated core are filled with a supporting frame (8).

4. A waterproof cardboard box for easy bottom moisture protection according to claim 3, characterized in that: The middle part of the support frame (8) is filled with a desiccant pack (9).

5. A waterproof cardboard box for easy bottom moisture protection according to claim 1, characterized in that: The external moisture-proof layer (3) is made of moisture-proof coated paper.

6. A waterproof cardboard box for easy bottom moisture protection according to claim 1, characterized in that: The internal moisture-proof layer (5) is made of flat kraft paper.

Images