Corrugated board capable of preventing mutual adhesion of paper

Abstract

The utility model discloses a corrugated board capable of preventing mutual adhesion of paper, which relates to the technical field of corrugated boards and comprises a core board, surface paper, inner paper, corrugated medium paper and a separation net, the corrugated medium paper is arranged on two sides of the core board, one side of the inner paper is arranged on the corrugated medium paper, the separation net is arranged at the other end of the inner paper, and the surface paper is arranged on the surface of the core board. The surface paper is arranged on the separation net, the corrugated medium paper is wave-shaped, the separation net comprises spherical nodes and a connecting rod, the spherical nodes are arranged at the two ends of the connecting rod, the corrugated medium paper separates the core board from the inner paper, the separation net separates the inner paper from the surface paper, and the paper cannot be in direct contact, so that the mutual adhesion condition is avoided; the stability and durability of the paperboard structure are ensured, meanwhile, the memory sponge is used, and after deformation, the restoring force of the memory sponge when the memory sponge is restored to the original shape not only facilitates separation of adhered parts, but also can ensure the structural integrity of corrugated paper.

Description

Technical Field

[0001] This utility model relates to the field of corrugated cardboard technology, and in particular to a corrugated cardboard that can prevent paper from sticking together. Background Technology

[0002] Corrugated cardboard, also known as corrugated paperboard, is made by bonding together face paper, liner paper, core paper, and corrugated paper that has been processed into a wave shape. Preventing the paper from sticking together is a crucial step in the production process, directly affecting the quality and performance of the cardboard. Corrugated cardboard consists of multiple layers of paper, with the corrugated core paper and face paper bonded together by adhesives. If the paper sticks together, especially in high humidity environments, the adhesive may over-penetrate or fail to cure properly, leading to a decrease in the overall strength of the cardboard. This affects key performance indicators such as compression resistance, tear resistance, and bursting strength. Sticky paper can also cause unevenness on the cardboard surface, resulting in wrinkles, bubbles, or adhesive marks. This not only affects the appearance of the cardboard but may also hinder subsequent processing (such as printing, cutting, and folding).

[0003] Patent CN213861183U, published on August 3, 2021, discloses an impact-resistant corrugated cardboard, comprising a first corrosion-resistant layer, a first reinforcing metal mesh layer on the upper surface of the first corrosion-resistant layer, a first foam layer on the upper surface of the first reinforcing metal mesh layer, a first corrugated paper layer on the upper surface of the first foam layer, a first V-shaped corrugated paper layer on the upper surface of the first corrugated paper layer, a core board on the upper surface of the first V-shaped corrugated paper layer, a second V-shaped corrugated paper layer on the upper surface of the core board, a second corrugated paper layer on the upper surface of the second V-shaped corrugated paper layer, and a second foam layer on the upper surface of the second corrugated paper layer. This invention provides corrugated cardboard with good structural stability and high structural strength, effectively resisting impacts and preventing easy damage. It also exhibits high waterproof and corrosion-resistant properties, effectively improving the service life of the corrugated cardboard.

[0004] For corrugated cardboard, a series of measures need to be taken to prevent the paper from sticking together. If the face paper, core paper and liner paper stick together, it will lead to a decrease in the overall performance of the cardboard and problems such as blurry printed patterns and uneven cut edges. The above solution takes into account the addition of a reinforcing metal mesh layer to stabilize the corrugated paper structure, which can effectively resist impact and has high waterproof and corrosion resistance, thus effectively improving the service life of corrugated cardboard. However, the different layers are in direct contact and are prone to sticking together.

[0005] Therefore, it is necessary to provide a corrugated cardboard that can prevent the paper from sticking together. Utility Model Content

[0006] This application provides a corrugated cardboard that can prevent paper from sticking together, which can improve the problems in the related art where corrugated paper sticks together, resulting in a decrease in the overall strength of the cardboard, uneven surface, wrinkles, bubbles or adhesive marks, affecting the appearance of the cardboard and hindering the smooth progress of subsequent processing.

[0007] This application provides a corrugated cardboard that prevents paper from sticking together, including a core board, a face paper, a liner paper, corrugated core paper, and a separator mesh. Corrugated core paper is provided on both sides of the core board, one side of the liner paper is provided on the corrugated core paper, and a separator mesh is provided at the other end of the liner paper. The face paper is provided on the separator mesh.

[0008] This application provides a corrugated cardboard that prevents paper from sticking together. One or more layers of corrugated core paper are cleverly sandwiched between the core board and the linerboard. These corrugated core papers not only effectively isolate the core board and the linerboard from each other, avoiding direct contact between them, but also prevent the core board and the linerboard from sticking together due to prolonged pressure or moisture, ensuring the stability and durability of the cardboard structure. Furthermore, in order to enhance the independence and protective performance between different layers of the corrugated cardboard, an isolation mesh is specially added between the linerboard and the face paper. This insulating layer, with its fine mesh structure, cleverly separates the inner linerboard from the outer linerboard, preventing them from directly contacting each other and causing potential quality issues such as adhesion or damage, thus greatly improving the overall quality of the cardboard. Meanwhile, the corrugated core paper and core board play crucial roles in corrugated cardboard. Working together, they significantly enhance the strength and toughness of the cardboard. The corrugated core paper, through its unique wave-like structure design, strengthens the cardboard's compressive strength and cushioning effect, allowing it to better distribute pressure and maintain structural integrity when subjected to heavy objects or external impacts. The core board, as the supporting skeleton of the cardboard, provides the necessary rigidity and stability, ensuring the reliability and durability of the cardboard in various application scenarios.

[0009] The technical solutions described above in this application embodiment have at least the following technical effects: a corrugated core paper is sandwiched between the core board and the inner paper, which isolates the core board and the inner paper, preventing direct contact between them and causing them to stick together; a separating mesh is sandwiched between the inner paper and the face paper, which separates them and prevents direct contact between them; at the same time, the corrugated core paper and the core board are used to improve the strength and toughness of the corrugated cardboard.

[0010] In some embodiments, the corrugated core paper is wavy, the inner paper is bonded to the crests of the corrugated core paper, and the core paper is bonded to the troughs of the corrugated core paper.

[0011] In some embodiments, the isolation net includes spherical nodes and connecting rods, with spherical nodes provided at both ends of the connecting rods.

[0012] In some embodiments, the spherical node has flat angles on both sides parallel to the connecting rod, and one end of the flat angle end of the spherical node is bonded to the inner paper, and the other end is bonded to the outer paper.

[0013] In some embodiments, the face paper is provided with a waterproof coating.

[0014] In some embodiments, the corrugated core paper, the inner paper, and the core board form a cavity, and memory foam is disposed inside the cavity.

[0015] In some embodiments, the density of the spherical nodes on one side of the isolation mesh on both sides of the core plate is greater than that on the other side. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, 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 application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the overall structure of a corrugated cardboard that prevents papers from sticking together, provided for an embodiment of this application;

[0018] Figure 2 A schematic diagram of the overall structure of a corrugated cardboard that can prevent papers from sticking together, provided in an embodiment of this application, from another angle.

[0019] Figure 3 This is a schematic diagram of a corrugated cardboard section that prevents paper from sticking together, provided as an embodiment of this application.

[0020] The following are the labeling elements in the figure:

[0021] 1. Core board; 2. Face paper; 3. Inner paper; 4. Corrugated core paper; 5. Insulation net; 51. Spherical node; 52. Connecting rod; 6. Memory foam. Detailed Implementation

[0022] Based on this, in order to improve the problem in the related technology that the corrugated paper sticks together, resulting in a decrease in the overall strength of the cardboard, an uneven surface, wrinkles, bubbles or adhesive marks, affecting the appearance of the cardboard and the smooth progress of subsequent processing, the embodiments of this application provide the following solutions.

[0023] Please refer to the following: Figures 1-2It includes a core board 1, a face paper 2, a liner paper 3, a corrugated core paper 4, and a separating mesh 5. The corrugated core paper 4 is bonded to both sides of the core board 1, one side of the liner paper 3 is bonded to the corrugated core paper 4, and the separating mesh 5 is bonded to the other end of the liner paper 3. The face paper 2 is bonded to the separating mesh 5. The corrugated core paper 4 is wavy. The liner paper 3 is bonded to the crest of the corrugated core paper 4, and the core paper is bonded to the trough of the corrugated core paper 4. The face paper 2 is coated with a waterproof coating.

[0024] With this arrangement, one or more layers of corrugated core paper 4 are cleverly sandwiched between the core board 1 and the inner liner 3. These corrugated core papers 4, with their unique wavy shape, not only effectively isolate the core board 1 and the inner liner 3 from each other, avoiding direct contact between them, but also prevent the core board 1 and the inner liner 3 from sticking together due to prolonged pressure or moisture, thus ensuring the stability and durability of the cardboard structure. Furthermore, in order to enhance the independence and protective performance between different layers of the corrugated cardboard, an isolation mesh 5 is specially added between the inner liner 3 and the face paper 2. This insulating mesh 5, with its fine mesh structure, cleverly separates the inner liner 3 from the outer liner 2, preventing potential quality issues such as adhesion or damage from direct contact, thus greatly improving the overall quality of the cardboard. Meanwhile, the corrugated core 4 and core board 1 play crucial roles in the corrugated cardboard. Working together, they significantly enhance the strength and toughness of the cardboard. The corrugated core 4, through its unique wave-like structure design, strengthens the cardboard's compressive strength and cushioning effect, allowing it to better distribute pressure and maintain structural integrity when subjected to heavy objects or external impacts. The core board 1, acting as the supporting skeleton of the cardboard, provides the necessary rigidity and stability, ensuring the reliability and durability of the cardboard in various application scenarios. The waterproof layer enhances the waterproof performance of the corrugated paper, enabling it to maintain a certain strength and stability in humid or water-exposed environments. The waterproofed surface of the corrugated paper is more wear-resistant, resisting scratches and friction, extending its service life. This helps protect the goods inside the packaging from damage and reduces returns or claims due to packaging breakage. Furthermore, the waterproof layer typically has a good gloss and feel, making the corrugated paper packaging more aesthetically pleasing and upscale. This helps enhance the added value of the product and brand image, promoting sales.

[0025] Optionally, in some embodiments, please also refer to Figure 3 The isolation net 5 includes spherical nodes 51 and connecting rods 52. Spherical nodes 51 are provided at both ends of the connecting rods 52. Flat angles are opened on both sides of the spherical nodes 51 parallel to the connecting rods 52. One end of the flat angle end of the spherical node 51 is bonded to the inner paper 3, and the other end is bonded to the outer paper 2.

[0026] With this design, the spherical node 51 has flat corners on both sides, which can provide a larger contact area and a more uniform stress distribution. On the one hand, it enhances the connection strength between the node and the connecting rod 52, making the entire isolation net 5 structure more stable and able to withstand greater external forces. Through reasonable node design and the arrangement of connecting rod 52, the material can be used more fully, reducing material waste and helping to reduce production costs and engineering costs. On the other hand, this structure separates the inner paper 3 from the outer paper 2, so that the inner paper 3 and the outer paper 2 will not stick together after the corrugated paper is compressed.

[0027] Optionally, in some embodiments, please also refer to Figure 2 The corrugated core paper 4, the inner paper 3, and the core board 1 form a cavity, which is filled with memory foam 6.

[0028] With this design, memory foam 6, as a high-performance cushioning material, possesses excellent capabilities, effectively absorbing and dispersing external impacts, thus significantly reducing the risk of damage to packaged items during transportation or storage. When a corrugated cardboard box is subjected to external impact, memory foam 6 deforms, rapidly responding to and absorbing these impact forces, protecting the internal items from damage. Memory foam 6 does not permanently deform after being subjected to pressure. Instead, it gradually returns to its original shape after a period of time. This characteristic makes memory foam 6 play a crucial role in corrugated cardboard boxes. When the corrugated core 4 adheres to the linerboard 3, or the corrugated core 4 adheres to the core board 1 under pressure, the deformation and subsequent recovery process of memory foam 6 acts like a built-in separator. Once the pressure is released, memory foam 6 begins to return to its original shape, and its restoring force acts between the adhered corrugated core 4 and linerboard 3, and between the corrugated core 4 and core board 1. This restoring force not only helps separate the adhered parts but also ensures the structural integrity of the corrugated cardboard, preventing structural damage caused by adhesion.

[0029] Optionally, in some embodiments, please also refer to Figure 3 In the isolation nets 5 on both sides of the core plate 1, the density of the spherical nodes 51 on one side is greater than that on the other side.

[0030] This design follows a key layout principle in corrugated cardboard packaging box manufacturing: the denser side of the corrugated cardboard with spherical nodes 51 should face outwards, while the less dense side should face inwards. This layout is based on the unique mechanical properties of corrugated cardboard when subjected to external impacts. When corrugated cardboard encounters an external impact, its structure responds immediately and deforms. If the impact point falls on the denser side of the spherical node 51, this side will act as the stress point and begin to bend towards the less dense side. Because the less dense side has a looser structure, it provides more deformation space for the corrugated cardboard, effectively absorbing and dispersing the impact force, improving the durability and protection of the packaging box, and ensuring the safe transport of the contents inside.

[0031] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A corrugated cardboard that prevents paper from sticking together, characterized in that: It includes a core board (1), a face paper (2), a liner paper (3), a corrugated core paper (4), and a separating mesh (5). The core board (1) is provided with corrugated core paper (4) on both sides, the liner paper (3) is provided on one side of the corrugated core paper (4), the liner paper (3) is provided with a separating mesh (5) at the other end, and the face paper (2) is provided on the separating mesh (5).

2. The corrugated cardboard according to claim 1, characterized in that, The corrugated core paper (4) is wavy, the inner paper (3) is bonded to the crest of the corrugated core paper (4), and the core paper is bonded to the trough of the corrugated core paper (4).

3. A corrugated cardboard according to claim 2 that prevents paper from sticking together, characterized in that, The isolation net (5) includes spherical nodes (51) and connecting rods (52), with spherical nodes (51) provided at both ends of the connecting rods (52).

4. A corrugated cardboard according to claim 3 that prevents paper from sticking together, characterized in that, The spherical node (51) has flat corners on both sides parallel to the connecting rod (52). One end of the flat corner of the spherical node (51) is bonded to the inner paper (3), and the other end is bonded to the outer paper (2).

5. A corrugated cardboard according to claim 4 that prevents paper from sticking together, characterized in that, The face paper (2) is provided with a waterproof coating.

6. A corrugated cardboard according to claim 5 that prevents paper from sticking together, characterized in that, The corrugated core paper (4), the inner paper (3), and the core board (1) form a cavity, and memory foam (6) is placed inside the cavity.

7. A corrugated cardboard according to claim 6 that prevents paper from sticking together, characterized in that, In the isolation nets (5) on both sides of the core plate (1), the density of the spherical nodes (51) on one side is greater than that on the other side.

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