Waterproof and moistureproof coating carton structure

Abstract

The utility model relates to the technical field of carton structures, in particular to a waterproof and moistureproof coating carton structure, which comprises a carton body and is characterized in that at least two pairs of oppositely arranged double-layer folding cover plates are arranged at the top of the carton body, soft sealing strips are arranged on the long edges of the periphery of the top of the carton body, a moistureproof lining partition plate is arranged in the carton body, and the waterproof and moistureproof coating carton structure is arranged in the carton body. According to the utility model, a multi-layer structure is adopted to realize omnibearing water resistance and moisture resistance, the surface of the box body is coated with a polyurethane waterproof coating, and the top of the box body is provided with a double-layer folding cover plate and a sealing strip to reinforce sealing; honeycomb PP plastic partition plates are arranged inside to achieve dry and wet isolation. The bottom adopts a waterproof base matched with an arc-shaped diversion trench to discharge accumulated water; a disposable humidity sensing label is arranged to monitor humidity in real time; the cover plate is formed by compounding craft paper and PE coated paper, so that the cover plate is high in strength and moisture-proof; the handle holes are provided with double-layer reinforcing ribs to improve the bearing capacity. The structure integrates waterproof, moisture-proof and load-bearing functions and the like, and meets the use requirements of complex environments.

Description

Technical Field

[0001] This utility model relates to the field of cardboard box structure technology, and in particular to a waterproof and moisture-proof coated cardboard box structure. Background Technology

[0002] In modern logistics and product packaging, cardboard boxes, as an economical, lightweight, and easy-to-process packaging container, are widely used in the transportation and storage of various products. Due to the inherent material properties of cardboard boxes, they generally suffer from problems such as easy moisture absorption, deformation, and decreased compressive strength when exposed to humid, rainy, or high-humidity environments. This is especially true in the packaging of environmentally sensitive products such as food, pharmaceuticals, and electronic products, where traditional cardboard boxes struggle to provide sufficient waterproof and moisture-proof protection, easily leading to product quality damage, shortened shelf life, or even safety hazards. To address these issues, the industry has gradually developed various improved cardboard box structures with moisture-proof and waterproof functions, employing methods such as coatings, partitions, and optimized bases to enhance the waterproofness, structural strength, and ease of use of cardboard boxes.

[0003] Chinese patent discloses a carton for a packing machine (publication number: CN 208932043 U), which includes a carton body, a lower short cover, a latch, ventilation holes, an adhesive board, side panels, an upper long cover, and a bottom plate. The carton body has side panels on both the left and right sides, and the side panels and adhesive boards are connected together by fastening nails. The adhesive boards are connected to the carton body to form an integrated structure. The bottom of the carton body has a bottom plate. However, this type of carton has problems such as insufficient sealing, easy internal moisture absorption, easy water accumulation at the bottom, lack of effective means to monitor humidity changes, and insufficient compressive strength of the handle. It is difficult to meet the comprehensive protection needs in complex environments. Therefore, a waterproof and moisture-proof coated carton structure is needed. Utility Model Content

[0004] The purpose of this utility model is to solve the problems that exist in the prior art, such as insufficient sealing of cardboard boxes, easy dampness inside, easy water accumulation at the bottom, lack of effective means to monitor humidity changes, and insufficient compressive strength of the handle, which make it difficult to meet the comprehensive protection needs in complex environments. Therefore, a waterproof and moisture-proof coated cardboard box structure is proposed.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: A waterproof and moisture-proof coated cardboard box structure, comprising a box body, characterized in that: the top of the box body is provided with at least two pairs of opposing double-layer folding covers; the long sides of the top of the box body are provided with soft sealing strips, the thickness of which is 1-2mm; the inside of the box body is provided with moisture-proof inner lining partitions, the number of which is 5-7 and arranged in an equally spaced array; the material of which is honeycomb PP plastic partitions; and the bottom of the box body is provided with a waterproof base. By setting double-layer folding covers, the sealing tightness can be enhanced, improving the protection level; the soft sealing strips can fill the tiny gaps after the covers are closed, further preventing external moisture from entering; the moisture-proof inner lining partitions form multiple areas of isolation inside, preventing items from directly contacting the bottom of the box body, thus improving the overall moisture-proof performance; and the waterproof base at the bottom enhances water resistance, protecting the structural integrity of the entire box body in a humid environment.

[0006] Preferably, the box body is made of composite corrugated cardboard, and the surface is covered with a hot-melt polyurethane waterproof coating with a coating thickness of 0.1-0.3mm; the composite corrugated cardboard structure ensures the basic strength and cushioning capacity of the carton; the hot-melt polyurethane waterproof coating gives the surface of the box body good waterproof ability, reduces water penetration, and improves the overall moisture-proof performance.

[0007] Preferably, a disposable humidity sensor label with dimensions of 2×2cm is provided at the center of one side of the outer wall of the enclosure. This provides an intuitive means of humidity detection, helping users quickly determine whether the enclosure is damp, thus improving product safety and reliability. The disposable design avoids inaccurate detection due to repeated use, ensuring the accuracy of each test.

[0008] Preferably, the waterproof base has two arc-shaped drainage channels at its bottom. These channels effectively guide moisture, preventing material softening or structural damage caused by water accumulation at the bottom of the enclosure; this enhances the stability and durability of the enclosure in humid or rainy environments.

[0009] Preferably, the double-layer folding cover is composed of an outer layer of kraft paper and an inner layer of food-grade PE coated paper. The outer layer of kraft paper provides good structural strength and compression resistance, enhancing the durability of the cover; the inner layer of food-grade PE coated paper provides excellent moisture and oil resistance, making it suitable for use in contact with sensitive items such as food, thus improving packaging safety.

[0010] Preferably, the box body has two oval handle holes on both sides, and each oval handle hole is surrounded by a double layer of reinforcing ribs. The oval handle hole design makes it easy for people to grip, improving ease of use; the reinforcing rib design effectively prevents the handle from being damaged due to frequent use or heavy loads, improving the overall structural strength and durability of the carton.

[0011] The advantages of this utility model are:

[0012] This application achieves comprehensive waterproof and moisture-proof performance through a multi-layer structural design. Not only does the composite corrugated cardboard with a hot-melt polyurethane waterproof coating enhance the overall water resistance of the box, but the top of the box features multiple pairs of foldable double-layer covers with soft sealing strips to effectively fill sealing gaps and improve top sealing. Internally, multiple honeycomb-shaped PP plastic moisture-proof linings isolate the internal space from moisture, preventing direct contact between items and moisture. The waterproof base, with its arc-shaped drainage channel, quickly drains water from the bottom of the box, preventing softening or structural damage due to bottom dampness. A disposable humidity-sensing label provides real-time feedback on the internal humidity, enhancing the user's awareness of the packaging's condition. The double-layer folding covers combine an outer layer of kraft paper with an inner layer of food-grade PE coated paper, balancing structural strength and moisture resistance. The oval handle holes on both sides have double-layer reinforcing ribs, improving handling convenience and structural load-bearing capacity. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 This utility model Figure 1 Enlarged view of I in the middle.

[0016] Figure 3 This is a schematic diagram of the bottom structure of this utility model.

[0017] In the picture: 1. Double-layer folding cover; 2. Moisture-proof inner lining partition; 3. Box body; 4. Oval handle hole; 5. Waterproof base; 6. Hot melt polyurethane waterproof coating; 7. Soft sealing strip; 8. Arc-shaped guide channel. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model. Example

[0019] Please see Figure 1-3 As shown, a waterproof and moisture-proof coated cardboard box structure includes a box body 3. The box body 3 is characterized by: at least two pairs of opposing double-layer folding covers 1 on its top; soft sealing strips 7 with a thickness of 1-2 mm on all four long sides of the top of the box body 3; a moisture-proof inner lining partition 2 inside the box body 3, consisting of 5-7 partitions arranged in an equally spaced array; the moisture-proof inner lining partition 2 is made of honeycomb-shaped PP plastic; and a waterproof base 5 at the bottom of the box body 3. By setting the double-layer folding covers 1, the sealing tightness is enhanced, improving the protection level; the soft sealing strips 7 fill the tiny gaps after the covers are closed, further preventing external moisture from entering; the moisture-proof inner lining partitions 2 form multiple areas of isolation inside, preventing items from directly contacting the bottom of the box body 3 and improving overall moisture-proof performance; and the waterproof base 5 at the bottom enhances water resistance and protects the structural integrity of the entire box body 3 in humid environments.

[0020] In this embodiment, the box body 3 is made of composite corrugated cardboard and covered with a hot-melt polyurethane waterproof coating 6 with a coating thickness of 0.1-0.3mm. The composite corrugated cardboard structure ensures the basic strength and cushioning capacity of the carton. The hot-melt polyurethane waterproof coating gives the surface of the box body 3 good waterproof ability, reduces water penetration, and improves the overall moisture-proof performance.

[0021] In this embodiment, a disposable humidity sensor label with dimensions of 2×2cm is provided at the center of one side of the outer wall of the box 3. This provides an intuitive means of humidity detection, helping users quickly determine whether the box is damp, thus improving product safety and reliability. The disposable design avoids inaccurate detection due to repeated use, ensuring the accuracy of each test.

[0022] In this embodiment, the bottom of the waterproof base 5 is provided with two arc-shaped drainage channels 8, which are correspondingly arranged. The arc-shaped drainage channels 8 effectively guide water, preventing the bottom of the box 3 from softening or being damaged by water accumulation; thus enhancing the stability and durability of the box 3 in humid or rainy environments.

[0023] In this embodiment, the double-layer folding cover 1 is composed of an outer layer of kraft paper and an inner layer of food-grade PE coated paper. The outer layer of kraft paper provides good structural strength and compression resistance, enhancing the durability of the cover; the inner layer of food-grade PE coated paper provides excellent moisture and oil resistance, making it suitable for use in contact with sensitive items such as food, thus improving packaging safety.

[0024] In this embodiment, two oval handle holes 4 are provided on both sides of the box body 3, and the oval handle holes 4 are arranged correspondingly. The oval handle holes 4 are surrounded by double-layer reinforcing ribs. The oval handle holes 4 are designed to be easy for people to grip, improving the convenience of use; the reinforcing rib design effectively prevents the handle part from being damaged due to frequent use or heavy load, improving the overall structural strength and durability of the carton.

[0025] The implementation principle of this embodiment is as follows:

[0026] The box body 3 uses composite corrugated cardboard as the base material and is covered with a hot-melt polyurethane waterproof coating 6 on the outer surface, forming the first waterproof barrier. When the box is used in humid or rainy environments, the surface coating effectively blocks moisture penetration, preventing the box body 3 structure from softening or deforming due to water absorption, providing basic waterproof protection for the entire box body 3. The top of the box body 3 is designed with at least two pairs of foldable double-layer covers, which are used in conjunction with soft sealing strips 7 installed on the long sides. When sealing the box, the covers fold to cover the opening, and the soft sealing strips 7 are pressed tightly against the edges of the box body 3, which strengthens the seal and prevents moisture from entering from the top gaps, further improving the top sealing performance and ensuring that the interior remains dry in rainy weather or during stacked transportation.

[0027] The interior of the cabinet 3 is equipped with 5 to 7 honeycomb-shaped PP plastic partitions arranged at equal intervals. This material has excellent moisture-proof properties. At the same time, the honeycomb structure not only provides a stable partition space, but also avoids items from directly contacting the humid environment at the bottom of the cabinet 3, effectively isolating the contents from moisture and forming an internal microenvironment isolation. The waterproof base 5 is made of PVC waterproof material, forming a basic waterproof foundation. At the same time, two symmetrical arc-shaped drainage channels 8 are provided on both sides to guide water that may seep into or accumulate at the bottom to the outside of the cabinet 3.

[0028] The disposable humidity-sensing label on the outer wall of box 3 can detect changes in humidity inside the box in real time. If the humidity inside the box increases, the label's color or state will change, alerting the user to the risk of water leakage or moisture, providing direct visual feedback and facilitating timely action during logistics or storage. The oval handle holes 4 on both sides of box 3, combined with a double-layer reinforcing rib structure, increase the strength and durability of the handles. The double-layer reinforcing ribs effectively prevent tearing or deformation caused by excessive force during handling, improving the box's load-bearing capacity and lifespan during manual handling and mechanized loading and unloading, enhancing overall reliability and ease of use.

[0029] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A waterproof and moisture-proof coated carton structure comprising a box (3), characterized in that The box (3) top is provided with at least two pairs of oppositely arranged double-layer folding cover plates (1), the box (3) top four circumferential edges are each provided with a soft sealing strip (7), the soft sealing strip (7) thickness is 1-2mm, the box (3) is internally provided with a moisture-proof lining partition (2), the moisture-proof lining partition (2) quantity is 5~7 and is arranged in equidistant array, the moisture-proof lining partition (2) material is honeycomb PP plastic partition, the box (3) bottom is provided with a waterproof base (5).

2. A waterproof and moisture-proof coated carton structure according to claim 1, characterized in that: The box (3) is made of composite corrugated paperboard, and the surface is covered with a hot melt type polyurethane waterproof coating (6) with a coating thickness of 0.1-0.3mm.

3. A waterproof and moisture-proof coated carton structure according to claim 1, characterized in that: The box (3) is provided with a disposable humidity sensing label on one side of the outer wall, and the size of the disposable humidity sensing label is 2x2cm.

4. A waterproof and moisture-proof coated carton structure according to claim 1, characterized in that: The waterproof base (5) is provided with an arc-shaped flow guide groove (8) at the bottom, and the arc-shaped flow guide groove (8) is provided in pairs.

5. A waterproof and moisture-proof coated carton structure according to claim 1, characterized in that: The double-layer folding cover plate (1) is composed of outer layer kraft paper and inner layer food-grade PE film-coated paper.

6. A waterproof and moisture-proof coated carton structure according to claim 1, characterized in that: The box (3) is provided with an oval handle hole (4) on both sides, and the oval handle hole (4) is provided in pairs, and the oval handle hole (4) is surrounded by double-layer reinforcing ribs.

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