Flame-retardant corrugated board

Abstract

The utility model discloses a flame-retardant corrugated paperboard, which relates to the field of paperboards, and is characterized by comprising an outer paper layer, a middle layer and an inner paper layer, corrugated paper is arranged between the middle layer and the inner paper layer, a steel wire mesh is arranged between the outer paper layer and the middle layer, a plurality of waist-shaped holes are arranged on the steel wire mesh, and the waist-shaped holes are communicated with the corrugated paper. And a steel wire ring arranged along the outer edge of the waist-shaped hole is welded on the steel wire mesh. After the corrugated board is affected with damp, the overall strength of the steel wire gauze cannot be changed, the steel wire gauze can support the weight of the corrugated board, the corrugated board is not prone to being torn, the kidney-shaped holes are formed in the steel wire gauze, people can directly punch holes in the positions of the kidney-shaped holes, the structure of the steel wire gauze cannot be damaged in the punching process, and the punching efficiency is improved. And moreover, the punching difficulty is reduced, the polyurethane coating has certain waterproof and flame-retardant effects, and the integrity of the corrugated board is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of cardboard, and more specifically, it relates to a flame-retardant corrugated cardboard. Background Art

[0002] Corrugated cardboard is a multi-layer adhesive body, mainly composed of at least one layer of corrugated core paper sandwich and one layer of cardboard. This kind of cardboard has high mechanical strength and can withstand collisions and drops during handling.

[0003] The existing corrugated cardboard is generally used to make corrugated cardboard boxes. Some existing corrugated cardboard boxes are used for packaging fruits. After being picked, fruits still carry out life metabolism, generating carbon dioxide and moisture. This moisture easily keeps the inside of the cardboard box at a high humidity. After the corrugated cardboard absorbs moisture, its overall strength will decrease, thereby increasing the possibility of the corrugated cardboard being torn.

[0004] Therefore, a new solution needs to be proposed to solve this problem. Summary of the Utility Model

[0005] Aiming at the deficiencies of the existing technology, the purpose of the utility model is to provide a flame-retardant corrugated cardboard.

[0006] The above technical purpose of the utility model is achieved through the following technical solutions: A flame-retardant corrugated cardboard, including an outer paper layer, an intermediate layer and an inner paper layer. A corrugated paper is arranged between the intermediate layer and the inner paper layer. A steel wire mesh is arranged between the outer paper layer and the intermediate layer. A number of kidney-shaped holes are opened on the steel wire mesh, and a steel wire ring is fixed along the outer edge of the kidney-shaped holes on the steel wire mesh.

[0007] The utility model is further arranged as: A support layer is also arranged in the kidney-shaped holes between the outer paper layer and the intermediate layer.

[0008] The utility model is further arranged as: The thickness of the support layer is greater than the thickness of the steel wire mesh, and a protrusion formed by the support layer abutting is formed on the outer paper layer.

[0009] The utility model is further arranged as: The kidney-shaped holes include vertical holes and horizontal holes.

[0010] The utility model is further arranged as: The number of the vertical holes and the horizontal holes is equal, and the vertical holes and the horizontal holes are arranged alternately on the steel wire mesh in sequence.

[0011] The utility model is further arranged as: A flame-retardant coating is coated on the outer paper layer.

[0012] In summary, the utility model has the following beneficial effects: The corrugated paper is provided, so that the overall corrugated board still has a good buffering effect. After the corrugated board is damp, the overall strength of the steel wire mesh will not change. The steel wire mesh can support the weight on the corrugated board, making the corrugated board not easy to tear. The kidney-shaped holes are arranged on the steel wire mesh, enabling people to directly punch holes at the positions of the kidney-shaped holes, so that the structure of the steel wire mesh will not be damaged during the punching process and the punching difficulty is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a structural schematic diagram of the utility model Figure 1 ;

[0014] Figure 2 is a structural schematic diagram of the utility model Figure 2 , and is used to show the structure of the corrugated board except for the outer paper layer.

[0015] In the figure: 1, outer paper layer; 2, middle layer; 3, inner paper layer; 4, corrugated paper; 5, steel wire mesh; 6, steel wire ring; 7, support layer; 8, protrusion; 9, vertical hole; 10, horizontal hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] The following combines the drawings and embodiments to describe the utility model in detail.

[0017] The flame-retardant corrugated board, as Figure 1 and Figure 2 shown, includes an outer paper layer 1, a middle layer 2 and an inner paper layer 3. A corrugated paper 4 is arranged between the middle layer 2 and the inner paper layer 3, and a steel wire mesh 5 is arranged between the outer paper layer 1 and the middle layer 2. A plurality of kidney-shaped holes are formed in the steel wire mesh 5, and the plurality of kidney-shaped holes are arranged in a linear array on the steel wire mesh 5. A steel wire ring 6 is fixed on the steel wire mesh 5 along the outer edge of the kidney-shaped hole. The arrangement of the corrugated paper 4 makes the overall corrugated board still have a good buffering effect. After the corrugated board is damp, the overall strength of the steel wire mesh 5 will not change. The steel wire mesh 5 can support the weight on the corrugated board, making the corrugated board not easy to tear. Since some existing corrugated board boxes need to be punched with through holes for lifting the corrugated board box or evacuating the water vapor in the corrugated board box, the kidney-shaped holes are arranged on the steel wire mesh 5, enabling people to directly punch holes at the positions of the kidney-shaped holes, so that the structure of the steel wire mesh 5 will not be damaged during the punching process and the punching difficulty is reduced. The arrangement of the steel wire ring 6 ensures the strength and smoothness of the outer edge of the kidney-shaped hole, so that after a lifting hole is punched in the corrugated board, the position where the steel wire mesh 5 contacts the hand is the steel wire ring 6, thus ensuring the safety of the hand.

[0018] Such as Figure 1 and Figure 2As described above, a support layer 7 located in the waist-shaped hole is further provided between the outer paper layer 1 and the middle layer 2. The number of the support layers 7 is the same as the number of the waist-shaped holes. The support layer 7 can support the gap between the outer paper layer 1 and the middle layer 2, so that the outer paper layer 1 is not easy to sink into the waist-shaped hole to a large extent, thereby ensuring the integrity of the outer paper layer 1. The thickness of the support layer 7 is greater than the thickness of the wire mesh 5. A protrusion 8 formed by the resistance of the support layer 7 is formed on the outer paper layer 1. The setting of the protrusion 8 can give people feedback, so that people can directly observe the position of the waist-shaped hole on the corrugated cardboard, thereby facilitating people to punch the corrugated cardboard. The pulling holes opened on the existing corrugated cardboard are generally waist-shaped, which is convenient for people to put their hands in. Corrugated cardboard is formed into a corrugated cardboard box by folding. People are not sure on which two opposite side walls of the box to make the lifting holes. The waist-shaped holes include vertical holes 9 and transverse holes 10, thereby dividing the waist-shaped holes into two types. This arrangement makes it possible for the corrugated cardboard to have suitable waist-shaped holes for opening the lifting holes on any side wall of the corrugated cardboard box. The number of vertical holes 9 and transverse holes 10 is equal. The vertical holes 9 and transverse holes 10 are alternately arranged on the wire mesh 5 in sequence. This arrangement makes the transverse holes 10 and the vertical holes 9 arranged more evenly on the corrugated cardboard, which is convenient for people to plan the position of the lifting holes. The outer paper layer 1 is coated with a flame retardant coating, which has a good flame retardant effect and ensures the overall integrity of the corrugated cardboard.

[0019] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A flame retardant corrugated paperboard, characterized in that: The invention comprises an outer paper layer (1), an intermediate layer (2) and an inner paper layer (3), wherein corrugated paper (4) is arranged between the intermediate layer (2) and the inner paper layer (3), and a steel wire mesh (5) is arranged between the outer paper layer (1) and the intermediate layer (2), wherein a plurality of waist-shaped holes are formed on the steel wire mesh (5), and a steel wire ring (6) arranged along the outer edge of the waist-shaped holes is fixed on the steel wire mesh (5).

2. The flame-retardant corrugated paperboard according to claim 1, characterized in that: A support layer (7) located in the waist-shaped hole is also provided between the outer paper layer (1) and the middle layer (2).

3. The flame retardant corrugated paperboard according to claim 2, characterized in that: The thickness of the support layer (7) is greater than the thickness of the steel wire mesh (5), and a protrusion (8) formed by the support layer (7) is formed on the outer paper layer (1).

4. The flame retardant corrugated paperboard according to claim 3, characterized in that: The waist-shaped hole comprises a vertical hole (9) and a transverse hole (10).

5. The flame retardant corrugated paperboard according to claim 4, characterized in that: The number of the vertical holes (9) and the number of the transverse holes (10) are equal, and the vertical holes (9) and the transverse holes (10) are arranged alternately on the wire mesh (5).

6. The flame retardant corrugated paperboard according to claim 5, characterized in that: The outer paper layer (1) is coated with a flame retardant coating.

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