Composite corrugated board

Abstract

The utility model discloses a composite corrugated board, which relates to the technical field of corrugated boards and comprises a corrugated paper core and composite boards, the composite boards are arranged on two sides of the corrugated paper core, and composite supporting and fixing strips are fixedly connected between the inner sides of the corrugated paper core and the composite boards at equal intervals. And the inner sides of the composite supporting and fixing strips are fixedly connected with the outer side of the corrugated paper core. By the adoption of the structure, the waterproof breathable film layer serves as the outermost layer, moisture permeation can be effectively prevented, meanwhile, gas is allowed to pass through, the structural integrity in a humid environment and dryness of internal materials are guaranteed, the flame retardant layer is made of halogen compound flame retardant, flame spreading can be slowed down, safety protection is provided during fire disasters, and the service life of the cable is prolonged. The fireproof filling layer is made of expansion type fireproof filling materials and expands rapidly at the high temperature to form a heat insulation layer, heat and flames are effectively isolated, the composite supporting and fixing strips are designed to be placed in the gaps of the corrugated paper core, and the strength and fireproof performance of the structure are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of corrugated paperboards, in particular to a composite corrugated paperboard. Background Art

[0002] Corrugated cardboard is a multi-layer adhesive body, usually composed of one or more layers of corrugated core paper and one or more layers of cardboard. This cardboard has high mechanical strength and can withstand collisions and falls during transportation. The actual performance of the corrugated cardboard depends on the characteristics of the core paper and cardboard and the structure of the carton itself. The Chinese patent publication number CN214164355U discloses a composite corrugated cardboard, which includes a base, a cardboard body, a corrugated paper core on one side of the cardboard body, and a cardboard body two on the other side of the corrugated paper core. The utility model is based on the cardboard body one, the corrugated paper core, and the cardboard body. Second, the pressure-resistant cardboard and the adsorption board constitute a composite corrugated cardboard. The cardboard body 1 and the cardboard body 2 connected on both sides of the corrugated paper core increase the overall strength of the corrugated cardboard. The pressure-resistant strips and support strips provided between the corrugated paper core and the cardboard body 1 and the cardboard body 2 respectively increase the support strength of the corrugated paper core, making the corrugated cardboard less prone to collision deformation. The lightweight pressure-resistant strips and support strips increase the strength of the corrugated cardboard while taking up less weight, making it easier to pick up the corrugated cardboard. The pressure-resistant cardboard connected to one side of the cardboard body 2 increases the strength. The fire-retardant coating and wear-resistant coating applied on one side of the pressure-resistant cardboard give the corrugated cardboard a certain fireproof and wear-resistant effect. Although the above technical solution is provided with a corresponding supporting structure, during its specific use, after the pressure-resistant strips and support strips support the corrugated paper core, there is still a gap on its inner side. Although it can play a certain supporting and compressive role during the overall pressure resistance period, the existence of the gap will obviously lead to limited pressure resistance. At the same time, its overall fire protection is only a coating structure, and the overall fire protection performance is poor, so it needs to be improved. Utility Model Content

[0003] In view of the problems mentioned in the background technology, the purpose of the present invention is to provide a composite corrugated paperboard to solve the problems raised in the background technology.

[0004] The above technical objectives of the present invention are achieved through the following technical solutions:

[0005] A composite corrugated paperboard comprises a corrugated paper core and composite panels, wherein the composite panels are arranged on both sides of the corrugated paper core, and composite support strips are fixedly connected at equal intervals between the corrugated paper core and the inner sides of the composite panels, and the inner sides of the composite support strips are fixedly connected to the outer sides of the corrugated paper core;

[0006] The composite board includes a side paper base plate, the composite supporting strip is fixedly connected to the inner side of the side paper base plate, the outer side of the side paper base plate is fixedly connected to a first waterproof layer, the outer side of the first waterproof layer is fixedly connected to a fireproof layer, and the outer side of the fireproof layer is fixedly connected to a second waterproof layer.

[0007] As a preferred technical solution, the first waterproof layer is configured as a paper layer treated with a waterproofing agent, and the second waterproof layer is configured as a laminating layer.

[0008] As a preferred technical solution, the fireproof layer is configured as an inorganic salt fireproof coating, and the side paper substrate is configured as a honeycomb paperboard.

[0009] As a preferred technical solution, the cross-sectional shape of the corrugated paper core is a combination of multiple isosceles triangles, and the composite supporting strips are also arranged in an isosceles triangle shape.

[0010] As an optimal technical solution, the composite supporting strip includes an outer film layer, which is arranged at the outermost side of the composite supporting strip, the inner outer end of the outer film layer is fixedly connected to a flame retardant layer, and the inner inner end of the outer film layer is fixedly connected to a fireproof filling layer.

[0011] As a preferred technical solution, the outer film layer is configured as a waterproof and breathable film layer, and the flame retardant layer is configured as a halogen compound flame retardant layer.

[0012] As a preferred technical solution, the fireproof filling layer is configured as an intumescent fireproof filling material layer, and the composite supporting strips are all arranged in the gaps of the corrugated paper core.

[0013] In summary, the present invention has the following beneficial effects:

[0014] The corrugated cardboard of the present application adopts a corrugated paper core design composed of isosceles triangles, combined with composite supporting strips filled in the gaps, to construct a stable and compact structure without gaps, thereby enhancing the overall stability and pressure resistance. At the same time, through the provision of the first waterproof layer, the second waterproof layer and the fireproof layer, the waterproof and fireproof properties of the corrugated cardboard are effectively improved, making it have stronger comprehensive performance. This design not only ensures the performance of the corrugated cardboard in pressure bearing, waterproofing and fireproofing, but also improves its stability and reliability in practical applications. In addition, the waterproof and breathable membrane layer as the outermost layer can effectively prevent moisture penetration while allowing gas to pass through, ensuring the structural integrity and drying of the internal material in a humid environment. The flame retardant layer adopts a halogen compound flame retardant, which can slow the spread of flames and provide safety protection in case of fire. The fireproof filling layer adopts an intumescent fireproof filler, which rapidly expands at high temperature to form an insulation layer, effectively isolating heat and flames. The composite supporting strips are designed to be placed in the gaps of the corrugated paper core, which not only improves the strength of the structure but also improves the fireproof performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the utility model's split state structure;

[0017] Figure 3 This utility model Figure 1 A schematic diagram of the enlarged structure at point A;

[0018] Figure 4 This is a schematic diagram of the composite support strip structure of the utility model;

[0019] Figure 5 It is a schematic diagram of the overall cross-sectional structure of the composite board of the present invention.

[0020] Figure numerals: 1, corrugated paper core; 2, composite board; 21, side paper base board; 22, first waterproof layer; 23, second waterproof layer; 24, fireproof layer; 3, composite supporting strip; 31, outer membrane layer; 32, flame retardant layer; 33, fireproof filling layer. DETAILED DESCRIPTION

[0021] Example

[0022] refer to Figures 1 to 5 A composite corrugated paperboard of this embodiment includes a corrugated paper core 1 and a composite board 2. The composite board 2 is arranged on both sides of the corrugated paper core 1. Composite supporting strips 3 are fixedly connected at equal intervals between the corrugated paper core 1 and the inner sides of the composite boards 2 on both sides. The composite supporting strips 3 are fixedly connected to the outer side of the corrugated paper core 1.

[0023] The composite board 2 includes a side paper substrate 21, a composite support strip 3 fixedly connected to the inner side of the side paper substrate, a first waterproof layer 22 fixedly connected to the outer side of the side paper substrate, a fireproof layer 24 fixedly connected to the outer side of the first waterproof layer 22, and a second waterproof layer 23 fixedly connected to the outer side of the fireproof layer 24. The composite board 2 is cleverly arranged on both sides of the corrugated paper core 1 and fixedly connected by composite support strips 3 at equal intervals. The inner sides of these support strips are tightly attached to the outer side of the corrugated paper core 1, thereby forming a stable and compact structure. The composite board 2 itself is composed of the side paper substrate 21, the first waterproof layer 22, the fireproof layer 24, and the second waterproof layer 23. The corrugated cardboard is composed of a fireproof layer 24 and a second waterproof layer 23. The inner side of the side paper base plate 21 is tightly connected to the composite supporting strip 3, while its outer side is first covered with a first waterproof layer 22 to effectively prevent moisture penetration. Then, the fireproof layer 24 is fixed on the first waterproof layer 22 to provide additional fire protection. Finally, the second waterproof layer 23 covers the outer side of the fireproof layer 24, further enhancing the waterproof ability of the cardboard. This multi-layer structure design not only ensures the stability and durability of the corrugated cardboard, but also significantly improves its waterproof and fireproof properties. It is suitable for various packaging and construction applications that require high-performance protection.

[0024] refer to Figure 5 The first waterproof layer 22 is set as a waterproofing agent treated paper layer, and the second waterproof layer 23 is set as a laminating layer. The structure of the composite board 2 is very delicate, including a side paper substrate 21, and the composite supporting strip 3 is fixed on the inner side of the side paper substrate. In order to provide double waterproof protection, a first waterproof layer 22 and a second waterproof layer 23 are set on the outside of the cardboard. The first waterproof layer 22 is set as a waterproofing agent treated paper layer. This paper layer is treated with a special waterproofing agent and can effectively prevent moisture from penetrating into the interior of the cardboard, keeping the cardboard dry and intact. The second waterproof layer 23 is set as a laminating layer. Laminating is a technology that covers a layer of film on the surface of paper through a special process. This film has excellent waterproof properties and can further enhance the waterproof effect of the cardboard. In addition, a fireproof layer 24 is also set on the outside of the first waterproof layer 22 of the composite board 2. The fireproof layer 24 can assist in fire prevention and improve the fireproof performance of the cardboard. The design of this composite corrugated cardboard not only ensures the stability and durability of the structure, but also significantly improves its waterproof and fireproof properties through the setting of multiple protective layers. It is suitable for various packaging and construction applications that require high-performance protection.

[0025] refer to Figure 5 The fireproof layer 24 is set as an inorganic salt fireproof coating, and the side paper substrate 21 is set as a honeycomb paperboard. Honeycomb paperboard is used as the side paper substrate 21. Honeycomb paperboard is made according to the principle of natural honeycomb structure. Corrugated paper is connected into countless hollow three-dimensional regular hexagons by gluing to form an integral load-bearing member, and a new type of sandwich structure environmentally friendly and energy-saving material is formed by gluing surface paper on both sides. This structure makes the honeycomb paperboard have the characteristics of light weight, low price, high strength, and recyclability. It is very suitable for use as the side paper substrate 21. It is arranged on the outside of the side paper substrate 21 and the paper layer is treated with a waterproofing agent to effectively prevent moisture from penetrating into the inside of the paperboard, ensuring the dryness and integrity of the paperboard. It is arranged on the outside of the first waterproof layer 22 and an inorganic salt fireproof coating is used. The inorganic fireproof coating has the characteristics of being non-flammable, not producing violent reactions and producing toxic gases, and at the same time has good fire resistance, excellent high temperature resistance and good corrosion resistance. This inorganic salt fireproof coating can assist in fire prevention and improve the fire resistance of the paperboard.

[0026] refer to Figure 1-Figure 3The cross-sectional shape of the corrugated paper core 1 is a combination of multiple isosceles triangles, and the composite supporting strips 3 are also arranged in an isosceles triangle shape. The cross-sectional shape of the corrugated paper core 1 is composed of multiple isosceles triangles. This design not only enhances the compressive resistance and stability of the cardboard, but also enables the cardboard to evenly disperse the pressure when subjected to external force, thereby improving its overall structural strength. The composite supporting strips 3 match the shape of the corrugated paper core 1, and the composite supporting strips 3 are also arranged in an isosceles triangle shape. They are evenly fixed between the corrugated paper core 1 and the inner side of the composite board 2, and the inner side is tightly fixed to the outer side of the corrugated paper core 1, ensuring the stability of the entire cardboard structure. The presence of the composite supporting strips 3 not only enhances the overall strength of the cardboard, but also enables the cardboard to maintain a stable shape when subjected to external force and is not easily deformed.

[0027] refer to Figure 1-Figure 3 The composite support strip 3 includes an outer film layer 31, which is arranged at the outermost side of the composite support strip 3. The inner outer end of the outer film layer 31 is fixedly connected to a flame retardant layer 32. The inner inner end of the outer film layer 31 is fixedly connected to a fireproof filling layer 33, which is arranged at the outermost side of the composite support strip 3 as an external protective layer. It not only provides a waterproof function, but also may have physical properties such as wear resistance and tear resistance to increase the service life of the composite support strip 3. The flame retardant layer 32 is arranged at the inner outer end of the outer film layer 31 and is made of a flame retardant material, such as a halogen compound flame retardant. When the fire source contacts the composite support strip 3, the flame retardant layer 32 can quickly take effect, slow down the spread of the flame, and buy time for fire extinguishing and personnel evacuation. The fireproof filling layer 33 is located inside the flame retardant layer 32 and is arranged as an intumescent fireproof filling material layer. This filler can expand rapidly when subjected to high temperature to form a dense thermal insulation layer, isolating heat and flames, thereby protecting the internal materials from being burned.

[0028] refer to Figure 4 The outer film layer 31 is set as a waterproof and breathable film layer, and the flame retardant layer 32 is set as a halogen compound flame retardant layer. The outer film layer 31 is set as a waterproof and breathable film layer. This film layer not only has excellent waterproof performance, but can also effectively prevent moisture from penetrating into the inside of the cardboard, keeping the cardboard dry and intact; it also has breathability, allowing moisture and gas inside the cardboard to be discharged through the film layer under certain conditions, thereby keeping the cardboard dry and stable. The flame retardant layer 32 is set as a halogen compound flame retardant layer. The halogen compound flame retardant is a highly efficient flame retardant material. When the fire source contacts the composite supporting strip 3, the flame retardant layer 32 can quickly take effect by capturing free radicals in the flame, reducing the flame temperature and slowing down the flame propagation speed, thereby significantly inhibiting the spread of the flame. This flame retardant layer 32 can provide valuable time for fire extinguishing and personnel evacuation, further improving the safety performance of the cardboard.

[0029] refer to Figure 4The fireproof filling layer 33 is set as an intumescent fireproof filling material layer. The composite supporting strips 3 are all set in the gaps of the corrugated paper core 1. The fireproof filling layer 33 is set as an intumescent fireproof filling material layer. When subjected to high temperature, this filler will rapidly expand and form a dense insulation layer, effectively isolating heat and flames, and protecting the inside of the cardboard from damage.

[0030] Principle and advantages of use: It is set as a waterproof and breathable membrane layer, which means that this layer can prevent moisture from penetrating into the interior. This design can ensure that the composite supporting strip 3 can still maintain its structural integrity in a humid environment and prevent the internal material from getting damp. It is located on the outermost side of the composite supporting strip 3. As an external protective layer, it not only provides a waterproof function, but also may have physical properties such as wear resistance and tear resistance to increase the service life of the composite supporting strip 3. The flame retardant layer 32 is set as a halogen compound flame retardant layer. Halogen compounds are a common type of flame retardant that can produce flame-suppressing substances during combustion, thereby reducing the flammability of the material. It is located at the inner outer end of the outer membrane layer 31. When the fire source contacts the composite supporting strip 3, the flame retardant layer 32 can quickly take effect and slow down the spread of the flame, providing fire extinguishing and To buy time for personnel evacuation, the fireproof filling layer 33 is set as an intumescent fireproof filling material layer. This filler can expand rapidly when subjected to high temperature to form a dense insulation layer, isolating heat and flames, thereby protecting the internal materials from being burned. It is located inside the flame retardant layer 32 and serves as the main fireproof barrier of the composite supporting strips 3. Its expansion characteristics can fill the gaps between the corrugated paper cores 1 and improve the fireproof performance of the entire structure. The composite supporting strips 3 are all set in the gaps of the corrugated paper cores 1. This design can make full use of the gaps in the corrugated paper cores 1 and improve the strength and fireproof performance of the structure without increasing the overall weight. By embedding the composite supporting strips 3 into the gaps in the corrugated paper cores 1, a more stable and safe structure can be formed, effectively preventing the collapse and deformation of the corrugated cardboard when a fire occurs.

Claims

1. A composite corrugated paperboard, comprising a corrugated paper core and a composite board, characterized in that: The composite board is arranged on both sides of the corrugated paper core, and composite supporting strips are fixedly connected at equal intervals between the corrugated paper core and the inner side of the composite board, and the inner side of the composite supporting strip is fixedly connected to the outer side of the corrugated paper core; The composite board includes a side paper base plate, the composite supporting strip is fixedly connected to the inner side of the side paper base plate, the outer side of the side paper base plate is fixedly connected to a first waterproof layer, the outer side of the first waterproof layer is fixedly connected to a fireproof layer, and the outer side of the fireproof layer is fixedly connected to a second waterproof layer.

2. The composite corrugated paperboard according to claim 1, characterized in that: The first waterproof layer is configured as a paper layer treated with a waterproofing agent, and the second waterproof layer is configured as a laminating layer.

3. The composite corrugated paperboard according to claim 1, characterized in that: The fireproof layer is configured as an inorganic salt fireproof coating, and the side paper substrate is configured as a honeycomb paperboard.

4. The composite corrugated paperboard according to claim 1, characterized in that: The cross-sectional shape of the corrugated paper core is a combination of multiple isosceles triangles, and the composite supporting strips are also arranged in an isosceles triangle shape.

5. The composite corrugated paperboard according to claim 1, characterized in that: The composite supporting strip includes an outer film layer, which is arranged on the outermost side of the composite supporting strip. The inner outer end of the outer film layer is fixedly connected to a flame retardant layer, and the inner inner end of the outer film layer is fixedly connected to a fireproof filling layer.

6. The composite corrugated paperboard according to claim 5, characterized in that: The outer film layer is configured as a waterproof and breathable film layer, and the flame retardant layer is configured as a halogen compound flame retardant layer.

7. The composite corrugated paperboard according to claim 6, characterized in that: The fireproof filling layer is configured as an intumescent fireproof filling material layer, and the composite supporting strips are all configured in the gaps of the corrugated paper core.

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