Multi-layer composite corrugated board

Abstract

The utility model relates to a multi-layer composite corrugated board, which belongs to the technical field of corrugated boards and comprises a support plate, a bearing component for enhancing bearing capacity is mounted on the outer side of the support plate, and an outer protection component for protecting the support plate and the bearing component is mounted between the support plate and the outer side of the bearing component. The bearing assembly comprises a first corrugated paper shell bonded to the bottom of the supporting plate, a second corrugated paper shell bonded to the top of the supporting plate, and corrugated interlayers bonded to the inner side of the first corrugated paper shell and the inner side of the second corrugated paper shell correspondingly. The reinforcing plates are respectively adhered between the inner bottom walls of the first corrugated paper shell and the second corrugated paper shell and the outer sides of the corresponding corrugated interlayers, and the reinforcing layer is adhered to the top of the second corrugated paper shell. According to the multi-layer composite corrugated board, the bearing capacity of the top of the corrugated board can be further improved under the condition that the corrugated board has good supporting strength, and the multi-layer composite corrugated board can meet the bearing, packaging and transporting requirements of modern logistics goods.

Description

Technical Field

[0001] The present application relates to the technical field of corrugated cardboard, and specifically to a multi-layer composite corrugated cardboard. Background Art

[0002] Corrugated cardboard is a multi-layer adhesive body, which is composed of at least one layer of corrugated core paper interlayer and one layer of cardboard. Corrugated cardboard has high mechanical strength and can withstand collisions and falls during transportation. It can also withstand a certain amount of pressure from a flat surface. It is elastic and has good cushioning effect. It can be made into pads or containers of various shapes and sizes as needed. It is simpler and faster than plastic cushioning materials.

[0003] According to the composite corrugated cardboard disclosed in Chinese patent publication number CN219820886U, the patent provides a first corrugated portion and a second corrugated portion, wherein the first corrugated portion includes a plurality of second convex flutes and the second corrugated portion includes a plurality of second convex flutes. The bending force acts on the first corrugated portion and the second corrugated portion at the same time, and one of the two must be able to provide good strength, thereby avoiding the problem that the corrugated cardboard is easily deformed when subjected to a force in a specific direction, thereby making the corrugated cardboard stronger.

[0004] However, this patent still has certain shortcomings in actual use. The patent can provide good strength by placing two layers of corrugated parts vertically, but when the overall structure carries objects vertically, the pressure is still from top to bottom. No matter in which direction the corrugated parts are placed, they are subject to pressure from above. Although this patent can greatly increase the force in a specific direction by stacking them, it has limited ability to increase the load-bearing capacity of the top. In this regard, the present application provides a multi-layer composite corrugated paperboard to solve the above problems. Utility Model Content

[0005] In response to the shortcomings of the existing technology, the present application provides a multi-layer composite corrugated cardboard, which has the advantages of being able to further improve the top load-bearing capacity of the corrugated cardboard while having good supporting strength. It solves the shortcomings of the existing composite corrugated cardboard that its top load-bearing capacity is limited during use, resulting in it being unable to be well adapted to the needs of modern logistics and cargo transportation.

[0006] To achieve the above objectives, the present application provides the following technical solution: a multi-layer composite corrugated paperboard, comprising a support plate, a load-bearing assembly for enhancing the load-bearing capacity being installed on the outer side of the support plate, and an outer protective assembly for protecting the outer side of the support plate and the load-bearing assembly being installed between the support plate and the load-bearing assembly;

[0007] The load-bearing assembly includes a first corrugated paper shell bonded to the bottom of the support plate, a second corrugated paper shell bonded to the top of the support plate, corrugated interlayers bonded to the inner sides of the first corrugated paper shell and the second corrugated paper shell respectively, a plurality of reinforcing plates bonded between the inner bottom walls of the first corrugated paper shell and the second corrugated paper shell and the outer sides of the corresponding corrugated interlayers respectively, and a reinforcing layer bonded to the top of the second corrugated paper shell.

[0008] By adopting the above technical solution, the bearing capacity of the top of the corrugated cardboard can be further improved while having good supporting strength.

[0009] Furthermore, the outer protection assembly includes a surface layer bonded to the top of the reinforcement layer, a moisture-proof layer bonded to the bottom of the first corrugated paper shell, a wear-resistant layer bonded to the bottom of the moisture-proof layer, and a waterproof film coated between the wear-resistant layer and the outside of the surface layer.

[0010] By adopting the above technical solution, the internal structure can be effectively protected from water and moisture.

[0011] Furthermore, the support plate is a paper honeycomb plate, the surface layer is a thickened kraft paper layer, and the moisture-proof layer is a water-soluble polyurethane resin layer.

[0012] By adopting the above technical solution, it can have extremely strong bearing capacity, toughness and water resistance, high strength, high tear resistance and dynamic strength, so that the moisture-proof layer has good moisture-proof, waterproof and weather-resistant properties after being laid.

[0013] Furthermore, the wear-resistant layer is a white cardboard layer, and the waterproof film is a chlorinated polyethylene waterproof layer.

[0014] By adopting the above technical solution, it can protect the internal structure and also has a certain wear-resistant effect. Chlorinated polyethylene has good waterproof performance, aging resistance, chemical corrosion resistance and other characteristics.

[0015] Furthermore, the first corrugated paper shell, the second corrugated paper shell, the reinforcement layer, the surface layer, the moisture-proof layer, the wear-resistant layer and the support plate are all located inside the waterproof film.

[0016] By adopting the above technical solution, the waterproof film can be coated between the outer sides of the entire cardboard for waterproofing.

[0017] Furthermore, the thickness of the first corrugated paper shell is equal to the thickness of the second corrugated paper shell, the corrugated interlayer includes a plurality of W-shaped core papers, and the opposite sides of two adjacent W-shaped core papers are fixedly connected to each other.

[0018] By adopting the above technical solution, the W-shaped core paper can provide a stable supporting effect.

[0019] Furthermore, the top and bottom of the W-shaped core paper are fixedly connected to the inner top wall and inner bottom wall of the first corrugated paper shell or the second corrugated paper shell respectively.

[0020] By adopting the above technical solution, the first corrugated paper shell and the second corrugated paper shell can be combined with the corresponding W-shaped core paper, thereby improving their integrity.

[0021] Furthermore, the reinforcing plate is located in the middle of the W-shaped core paper, the W-shaped core paper at the bottom is arranged in a front-to-back direction, and the W-shaped core paper at the top is arranged in a left-to-right direction. The reinforcing layer is a lightweight aluminum alloy layer and is distributed in a grid shape.

[0022] By adopting the above technical solution, the rigidity and anti-bending performance of the overall structure are effectively enhanced, so that it can stably place goods and can also be used stably for a long time.

[0023] Compared with the existing technology, the technical solution of this application has the following beneficial effects:

[0024] The multi-layer composite corrugated paperboard, through the coordinated use of the load-bearing components and the outer protective components on the outer side of the support plate, can further improve the load-bearing capacity of the top of the corrugated paperboard while maintaining good supporting strength. By rearranging the structure and specifically matching and combining the supporting structure, the multi-layer composite corrugated paperboard achieves excellent comprehensive physical properties, significantly improving the overall pressure-bearing capacity and anti-bending deformation performance of the paperboard, so that it can meet the load-bearing packaging and transportation needs of modern logistics goods, thereby effectively improving the practicality of the composite corrugated paperboard. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the structure of this application;

[0026] Figure 2 For this application structure Figure 1 A right side cross-sectional diagram of ;

[0027] Figure 3 For this application structure Figure 1 A schematic top view of the middle support plate connection structure;

[0028] Figure 4 For this application structure Figure 1 A three-dimensional schematic diagram of the first corrugated paper shell connection structure.

[0029] In the figure: 1. Support plate; 200. Load-bearing assembly; 201. First corrugated paper shell; 202. Second corrugated paper shell; 203. Corrugated interlayer; 204. Reinforcement plate; 205. Reinforcement layer; 300. Outer protection assembly; 301. Surface layer; 302. Moisture-proof layer; 303. Wear-resistant layer; 304. Waterproof film. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0031] See also Figures 1 to 4 The present application provides a technical solution: a multi-layer composite corrugated cardboard, comprising a support plate 1, a load-bearing component 200 for enhancing the load-bearing capacity is installed on the outer side of the support plate 1, and an outer protective component 300 for protecting the support plate 1 and the outer side of the load-bearing component 200 is installed; through the coordinated use of the load-bearing component 200 and the outer protective component 300 on the outer side of the support plate 1, the load-bearing capacity of the top of the corrugated cardboard can be further improved while having good supporting strength; through the rearrangement of the structure and the targeted combination of the supporting structure, the multi-layer composite corrugated cardboard achieves excellent comprehensive physical properties, significantly improves the overall pressure bearing capacity and anti-bending deformation performance of the cardboard, so that it can meet the load-bearing packaging and transportation needs of modern logistics goods, thereby effectively improving the practicality of the composite corrugated cardboard.

[0032] In this embodiment, the carrying assembly 200 is a structure for stably and effectively carrying goods placed on top of the cardboard.

[0033] like Figure 1 、 Figure 2 and Figure 4 As shown, the bearing assembly 200 includes a first corrugated paper shell 201 bonded to the bottom of the support plate 1, a second corrugated paper shell 202 bonded to the top of the support plate 1, a corrugated interlayer 203 bonded to the inner sides of the first corrugated paper shell 201 and the second corrugated paper shell 202, respectively, a plurality of reinforcing plates 204 bonded between the inner bottom walls of the first corrugated paper shell 201 and the second corrugated paper shell 202 and the outer sides of the corresponding corrugated interlayer 203, and a reinforcing layer 205 bonded to the top of the second corrugated paper shell 202.

[0034] It should be noted that the thickness of the first corrugated paper shell 201 is equal to the thickness of the second corrugated paper shell 202, the corrugated interlayer 203 includes a plurality of W-shaped core papers, and the opposite sides of two adjacent W-shaped core papers are fixedly connected to each other, and the top and bottom of the W-shaped core paper are respectively fixedly connected to the inner top wall and inner bottom wall of the first corrugated paper shell 201 or the second corrugated paper shell 202, and the reinforcing plate 204 is located in the middle of the W-shaped core paper. The bottom W-shaped core paper is arranged in a front-to-back direction, and the top W-shaped core paper is arranged in a left-to-right direction, so that the arrangement direction of the top and bottom W-shaped core papers can be vertical. By adopting an arrangement method in different directions, the actual bearing capacity can be increased, and under the action of the reinforcing plate 204, the bent part of the W-shaped core paper can also be supported, so that when the top of the first corrugated paper shell 201 or the second corrugated paper shell 202 is subjected to pressure, the reinforcing plate 204 can provide auxiliary support for the pressure from above.

[0035] In addition, the reinforcement layer 205 is a lightweight aluminum alloy layer and is distributed in a grid pattern, which effectively enhances the rigidity and bending resistance of the overall structure, so that it can stably place goods and can also be used stably for a long time.

[0036] In this embodiment, the outer protection assembly 300 is a structure for protecting the internal structure.

[0037] like Figure 1 、 Figure 2 and Figure 3 As shown, the outer protection component 300 includes a surface layer 301 bonded to the top of the reinforcement layer 205, a moisture-proof layer 302 bonded to the bottom of the first corrugated paper shell 201, a wear-resistant layer 303 bonded to the bottom of the moisture-proof layer 302, and a waterproof film 304 coated between the wear-resistant layer 303 and the outside of the surface layer 301.

[0038] It should be noted that the support plate 1 is a paper honeycomb board, which enables it to have extremely strong bearing capacity, so that it is suitable for use as the base layer of composite corrugated cardboard. The surface layer 301 is a thickened kraft paper layer, which makes it tough and water-resistant, high strength, high tear resistance and dynamic strength, and can meet the placement and packaging requirements of goods.

[0039] In addition, the moisture-proof layer 302 is a water-soluble polyurethane resin layer. The water-based polyurethane resin is an environmentally friendly, efficient, weather-resistant and highly adhesive coating material. It can be used under different environmental conditions and withstand the erosion of natural environmental factors such as sunlight, rain, wind and sand to maintain the durability of the coating. The water-soluble polyurethane grouting material can be quickly dispersed in water to form a dense waterproof film that effectively prevents the penetration of water molecules. At the same time, the material also has a very high bonding strength and can be tightly bonded to various base materials to form a complete waterproof system, so that the moisture-proof layer 302 has good moisture-proof, waterproof and weather-resistant properties after layout.

[0040] At the same time, the wear-resistant layer 303 is a white cardboard layer with a certain thickness, which can protect the internal structure and has a certain wear-resistant effect. The waterproof film 304 is a chlorinated polyethylene waterproof layer. Chlorinated polyethylene is a commonly used waterproof coating material with good waterproof performance, aging resistance, chemical corrosion resistance and other characteristics. The first corrugated paper shell 201, the second corrugated paper shell 202, the reinforcement layer 205, the surface layer 301, the moisture-proof layer 302, the wear-resistant layer 303 and the support plate 1 are all located inside the waterproof film 304, so that the waterproof film 304 can be coated between the outer sides of the entire cardboard for waterproofing.

[0041] The working principle of the above embodiment is:

[0042] When in use, this multi-layer composite corrugated cardboard can meet the load-bearing requirements of goods through the cooperation between the support plate 1 and the two corrugated interlayers 203 in different directions. The auxiliary support cooperation of the reinforcing plate 204 and the reinforcing layer 205 can further improve the load-bearing capacity of the top, so that it can meet the load-bearing and placement requirements of heavier goods. Under the action of the moisture-proof layer 302, it can effectively block the moisture on the ground, and avoid moisture invading the interior and causing moisture deformation as much as possible. Under the action of the wear-resistant layer 303, it can meet the movement requirements of the goods after packaging, so that the outer side of the composite corrugated cardboard can protect the inner structure for a longer time, thereby increasing the actual service life of the composite corrugated cardboard. Under the action of the waterproof film 304, it can play a certain waterproof effect, making it difficult for rainwater to enter the interior and cause damage to the structure and goods, thereby meeting the use requirements of modern cargo logistics.

[0043] Compared with the existing technology, the multi-layer composite corrugated cardboard, through the coordinated use of the load-bearing component 200 and the outer protection component 300 on the outside of the support plate 1, can further improve the load-bearing capacity of the top of the corrugated cardboard while having good supporting strength. Through the rearrangement of the structure and the targeted combination of the supporting structure, the multi-layer composite corrugated cardboard achieves excellent comprehensive physical properties, significantly improves the overall pressure-bearing capacity and anti-bending deformation performance of the cardboard, so that it can meet the load-bearing packaging and transportation needs of modern logistics goods, thereby effectively improving the practicality of the composite corrugated cardboard, and solving the problem that the load-bearing capacity of the top of the existing composite corrugated cardboard is limited during use, resulting in it not being well adapted to the needs of modern logistics and cargo transportation.

Claims

1. A multi-layer composite corrugated paperboard, comprising a support plate (1), characterized in that: A bearing assembly (200) for enhancing bearing capacity is installed on the outer side of the support plate (1), and an outer protection assembly (300) for protecting the support plate (1) and the bearing assembly (200) is installed between the outer sides of the support plate (1) and the bearing assembly (200); The bearing assembly (200) comprises a first corrugated paper shell (201) bonded to the bottom of the support plate (1), a second corrugated paper shell (202) bonded to the top of the support plate (1), a corrugated interlayer (203) bonded to the inner sides of the first corrugated paper shell (201) and the second corrugated paper shell (202), respectively, a plurality of reinforcing plates (204) bonded between the inner bottom walls of the first corrugated paper shell (201) and the second corrugated paper shell (202) and the outer sides of the corresponding corrugated interlayer (203), and a reinforcing layer (205) bonded to the top of the second corrugated paper shell (202).

2. The multi-layer composite corrugated paperboard according to claim 1, characterized in that: The outer protection component (300) comprises a surface layer (301) bonded to the top of the reinforcement layer (205), a moisture-proof layer (302) bonded to the bottom of the first corrugated paper shell (201), a wear-resistant layer (303) bonded to the bottom of the moisture-proof layer (302), and a waterproof film (304) coated between the wear-resistant layer (303) and the outer side of the surface layer (301).

3. The multi-layer composite corrugated paperboard according to claim 2, characterized in that: The support plate (1) is a paper honeycomb plate, the surface layer (301) is a thickened kraft paper layer, and the moisture-proof layer (302) is a water-soluble polyurethane resin layer.

4. The multi-layer composite corrugated paperboard according to claim 2, characterized in that: The wear-resistant layer (303) is a white cardboard layer, and the waterproof film (304) is a chlorinated polyethylene waterproof layer.

5. The multi-layer composite corrugated paperboard according to claim 2, characterized in that: The first corrugated paper shell (201), the second corrugated paper shell (202), the reinforcement layer (205), the surface layer (301), the moisture-proof layer (302), the wear-resistant layer (303), and the support plate (1) are all located inside the waterproof film (304).

6. The multi-layer composite corrugated paperboard according to claim 1, characterized in that: The thickness of the first corrugated paper shell (201) is equal to the thickness of the second corrugated paper shell (202), the corrugated interlayer (203) comprises a plurality of W-shaped core papers, and the opposite sides of two adjacent W-shaped core papers are fixedly connected to each other.

7. The multi-layer composite corrugated paperboard according to claim 6, characterized in that: The top and bottom of the W-shaped core paper are respectively fixedly connected to the inner top wall and inner bottom wall of the first corrugated paper shell (201) or the second corrugated paper shell (202).

8. The multi-layer composite corrugated paperboard according to claim 6, characterized in that: The reinforcing plate (204) is located in the middle of the W-shaped core paper, the W-shaped core paper at the bottom is arranged in a front-to-back direction, and the W-shaped core paper at the top is arranged in a left-to-right direction. The reinforcing layer (205) is a lightweight aluminum alloy layer and is distributed in a grid shape.

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