Waterproof and pressure-resistant corrugated paperboard

Abstract

This utility model discloses a waterproof and pressure-resistant corrugated cardboard, comprising a corrugated cardboard body, two side panels fixedly connected to the outer surface of the corrugated cardboard body, a pressure-resistant reinforcing layer, an outer waterproof paper fixedly connected to the upper surface of the pressure-resistant reinforcing layer, an inner waterproof paper fixedly connected to the bottom surface of the pressure-resistant reinforcing layer, an outer waterproof membrane fixedly connected to the upper surface of the outer waterproof paper, and an inner waterproof membrane fixedly connected to the bottom surface of the inner waterproof paper. The pressure-resistant reinforcing layer includes a high-strength honeycomb core layer. This waterproof and pressure-resistant corrugated cardboard, through the waterproof impregnation treatment of the outer and inner waterproof papers, and in conjunction with the outer and inner waterproof membranes, can form a double waterproof structure, effectively isolating moisture. Furthermore, during pressure resistance, the high-strength honeycomb core layer of the pressure-resistant reinforcing layer can evenly distribute pressure, and the corrugated structure of the reinforced corrugated core layer can absorb impact energy, providing reliable protection for the contents.

Description

Technical Field

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

[0002] Corrugated cardboard is a multi-layered adhesive, consisting of at least one layer of corrugated core paper and one layer of cardboard. It has high mechanical strength and can withstand collisions and drops during handling. The actual performance of corrugated cardboard depends on three factors: the characteristics of the core paper and the cardboard, and the structure of the carton itself.

[0003] Corrugated cardboard is mainly made from pulped plant fibers. Cellulose has an adsorption capacity and easily absorbs moisture from the air and contact surfaces. However, the current corrugated cardboard structure is relatively simple and does not have waterproof characteristics, making it prone to dampness, mold, and deterioration. In addition, the current corrugated cardboard has poor compression resistance and cannot withstand the impact and compression in special environments, making it prone to deformation and damage, and unable to effectively protect the contents. Therefore, we propose a waterproof and compression-resistant corrugated cardboard to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to provide a waterproof and pressure-resistant corrugated cardboard to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A waterproof and pressure-resistant corrugated cardboard includes a corrugated cardboard body, two side panels fixedly connected to the outer surface of the corrugated cardboard body, a pressure-resistant reinforcing layer, an outer waterproof paper fixedly connected to the upper surface of the pressure-resistant reinforcing layer, and an inner waterproof paper fixedly connected to the bottom surface of the pressure-resistant reinforcing layer.

[0007] In a further embodiment, an outer waterproof membrane is fixedly connected to the upper surface of the outer waterproof paper, and an inner waterproof membrane is fixedly connected to the bottom surface of the inner waterproof paper.

[0008] In a further embodiment, the compression-resistant reinforcement layer includes a high-strength honeycomb core layer, and a reinforced corrugated paper core layer is fixedly connected to both the upper surface and the bottom surface of the high-strength honeycomb core layer.

[0009] In a further embodiment, protective side plates are fixedly connected to both the left and right sides of the corrugated cardboard body, and the side of the two side plates that are close to each other are fixedly connected to the outer surfaces of the two protective side plates respectively.

[0010] In a further embodiment, both the outer and inner waterproof membranes are made of polyvinylidene chloride, and the thickness of both the outer and inner waterproof membranes is 0.1-0.3 mm.

[0011] In a further embodiment, both the outer waterproof paper and the inner waterproof paper are made of kraft paper that has undergone waterproof impregnation treatment.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This invention utilizes waterproof impregnation treatment of both outer and inner waterproof paper, combined with an outer and inner waterproof membrane, to form a double waterproof structure. This effectively isolates moisture, preventing the cardboard from absorbing water, becoming damp, moldy, and deteriorating, thus extending its service life. Furthermore, during compression, the high-strength honeycomb core layer of the compression-resistant reinforcement layer evenly distributes pressure, while the corrugated structure of the reinforced corrugated core layer absorbs impact energy. Together, these elements enhance the compression strength of the corrugated cardboard body, providing reliable protection for the contents and meeting higher packaging requirements. Attached Figure Description

[0014] Figure 1 A three-dimensional structural diagram of waterproof and pressure-resistant corrugated cardboard viewed from the front;

[0015] Figure 2 A cross-sectional view of waterproof and compression-resistant corrugated cardboard from the front.

[0016] Figure 3 A frontal cross-sectional view of the waterproof and compression-resistant corrugated cardboard compression reinforcement layer;

[0017] Figure 4 Waterproof and pressure-resistant corrugated cardboard Figure 2 Enlarged schematic diagram of the structure at point A in the middle.

[0018] In the diagram: 1. Corrugated cardboard body; 101. Compression-resistant reinforcing layer; 1011. High-strength honeycomb core layer; 1012. Reinforced corrugated core layer; 102. Outer waterproof paper; 103. Inner waterproof paper; 104. Outer waterproof membrane; 105. Inner waterproof membrane; 2. Side panel; 3. Protective side panel. Detailed Implementation

[0019] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] 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 protection scope of the present utility model.

[0022] Please see Figures 1-4 In this utility model, a waterproof and pressure-resistant corrugated cardboard includes a corrugated cardboard body 1, two side panels 2 are fixedly connected to the outer surface of the corrugated cardboard body 1, the corrugated cardboard body 1 includes a pressure-resistant reinforcing layer 101, an outer waterproof paper 102 is fixedly connected to the upper surface of the pressure-resistant reinforcing layer 101, and an inner waterproof paper 103 is fixedly connected to the bottom surface of the pressure-resistant reinforcing layer 101. The protective side panels 3 are thin-plate structures, using a material combination similar to that of the pressure-resistant reinforcing layer 101 of the corrugated cardboard body 1, and are covered with waterproof impregnated kraft paper on the outside, which can connect with the waterproof system of the corrugated cardboard body 1. The side panels 2 are reinforcing structures covering the outside of the protective side panels 3, and are made of rigid plastic.

[0023] In a further embodiment, an outer waterproof membrane 104 is fixedly connected to the upper surface of the outer waterproof paper 102, and an inner waterproof membrane 105 is fixedly connected to the bottom surface of the inner waterproof paper 103. Both the outer waterproof membrane 104 and the inner waterproof membrane 105 are made of polyvinylidene chloride, and the thickness of both the outer waterproof membrane 104 and the inner waterproof membrane 105 is 0.1-0.3 mm. The compressive strength reinforcement layer 101 includes a high-strength honeycomb core layer 1011, and a reinforcement layer is fixedly connected to both the upper surface and the bottom surface of the high-strength honeycomb core layer 1011. The reinforced corrugated core layer 1012, the outer waterproof membrane 104, and the inner waterproof membrane 105 are all made of polyvinylidene chloride, which has excellent water-blocking properties. Together with the waterproof paper, they form a double waterproof barrier, effectively preventing water penetration and avoiding the cardboard from becoming damp and moldy. The high-strength honeycomb core layer 1011 uses a honeycomb structure to evenly distribute pressure, while the reinforced corrugated core layer 1012 absorbs pressure energy through a wave-like structure. The combination of the two significantly improves the compressive strength of the cardboard, enabling it to withstand impact and compression even in special environments, protecting the contents inside.

[0024] In a further embodiment, protective side plates 3 are fixedly connected to both the left and right sides of the corrugated cardboard body 1. The sides of the two side plates 2 that are close to each other are fixedly connected to the outer surfaces of the two protective side plates 3 respectively. The outer waterproof paper 102 and the inner waterproof paper 103 are both made of kraft paper that has been waterproofed and impregnated. By connecting the side plates 2 and the protective side plates 3 on the surface of the corrugated cardboard body 1, an outer rigid frame can be formed to enhance the side protection capability and prevent the sides from being deformed by pressure. In addition, the waterproof paper 102 and the inner waterproof paper 103 are made of kraft paper that has been waterproofed and impregnated, which can block moisture and provide waterproof performance for the cardboard.

[0025] The working principle of this utility model is as follows: First, the outer waterproof paper 102 and the inner waterproof paper 103 are waterproofed and impregnated. Then, the outer waterproof membrane 104 and the inner waterproof membrane 105 are respectively bonded to the surfaces of the outer waterproof paper 102 and the inner waterproof paper 103. Since the outer waterproof membrane 104 and the inner waterproof membrane 105 are made of polyvinylidene chloride, they can form a double waterproof structure to prevent water intrusion. Then, during pressure resistance, the high-strength honeycomb core layer 1011 in the pressure-resistant reinforcement layer 101 evenly disperses the pressure, while the reinforced corrugated paper core layer 1012 absorbs energy through the wave structure. In addition, the side plate 2 and the protective side plate 3 form a rigid frame, which can enhance the side pressure resistance, thereby protecting the internal items.

[0026] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0027] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A waterproof and pressure-resistant corrugated paperboard, characterized by: The corrugated cardboard body (1) includes two side panels (2) fixedly connected to the outer surface of the corrugated cardboard body (1). The corrugated cardboard body (1) includes a compression-resistant reinforcing layer (101). An outer waterproof paper (102) is fixedly connected to the upper surface of the compression-resistant reinforcing layer (101), and an inner waterproof paper (103) is fixedly connected to the bottom surface of the compression-resistant reinforcing layer (101).

2. A waterproof and pressure-resistant corrugated paperboard according to claim 1, characterized in that: An outer waterproof membrane (104) is fixedly connected to the upper surface of the outer waterproof paper (102), and an inner waterproof membrane (105) is fixedly connected to the bottom surface of the inner waterproof paper (103).

3. A waterproof and pressure-resistant corrugated paperboard according to claim 1, characterized in that: The compression-resistant reinforcing layer (101) includes a high-strength honeycomb core layer (1011), and a reinforced corrugated paper core layer (1012) is fixedly connected to both the upper surface and the bottom surface of the high-strength honeycomb core layer (1011).

4. A waterproof and pressure-resistant corrugated paperboard according to claim 1, characterized in that: The corrugated cardboard body (1) is fixedly connected to protective side plates (3) on both the left and right sides, and the two side plates (2) are fixedly connected to the outer surfaces of the two protective side plates (3) respectively.

5. A waterproof and pressure-resistant corrugated paperboard according to claim 2, characterized in that: Both the outer waterproof membrane (104) and the inner waterproof membrane (105) are made of polyvinylidene chloride, and the thickness of both the outer waterproof membrane (104) and the inner waterproof membrane (105) is 0.1-0.3 mm.

6. A waterproof and pressure-resistant corrugated paperboard according to claim 1, characterized in that: Both the outer waterproof paper (102) and the inner waterproof paper (103) are made of kraft paper that has been waterproofed and impregnated.

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