Pressure-resistant and bending-resistant high-strength corrugated board

Abstract

The utility model relates to the technical field of corrugated paper boards, and discloses a pressure-resistant bending-resistant high-strength corrugated paper board, which comprises an upper-layer paper board, a middle-layer paper board, a lower-layer paper board and a corrugated paper core, and the upper-layer paper board and the lower-layer paper board are respectively positioned on the upper side and the lower side of the middle-layer paper board. The corrugated paper cores are arranged between the upper-layer paper board and the middle-layer paper board and between the middle-layer paper board and the lower-layer paper board; a plurality of pressure-resistant elastic strips which are uniformly distributed are arranged in wave gaps of the corrugated paper core; and anti-bending reinforcing ribs are arranged in the upper-layer paperboard and the lower-layer paperboard. The pressure-resistant elastic strips and the bending-resistant reinforcing ribs are additionally arranged in the corrugated board, so that the pressure-resistant and bending-resistant performance of the corrugated board is improved, the thickness of the corrugated board is not greatly changed, and the space utilization rate and the practicability are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of corrugated paperboards, in particular to a high-strength corrugated paperboard that is resistant to pressure and bending. Background Art

[0002] Corrugated cardboard is light in weight, low in cost, easy to process, and convenient to store and transport. Therefore, it is widely used in outer packaging boxes for industrial products such as electronic appliances, precision instruments, etc.

[0003] In order to increase the compressive and bending strength of the current corrugated cardboard, the main method is to increase the number of corrugated layers. Because the thickness of the corrugated cardboard is directly proportional to its strength, under the premise of a certain gram weight of the fluted paper and the face paper, in order to obtain high-strength cardboard, the size of the corrugated cardboard must be thickened. Due to the thickness of the corrugated cardboard, the box itself becomes bloated, reducing the available space and is not very practical.

[0004] For this purpose, a high-strength corrugated cardboard that is resistant to compression and bending is used. Utility Model Content

[0005] The utility model aims to solve the problem of low use strength of corrugated paperboard in the prior art and proposes a high-strength corrugated paperboard that is resistant to compression and bending.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A high-strength corrugated paperboard with resistance to pressure and bending, comprising an upper paperboard, a middle paperboard, a lower paperboard and a corrugated paper core, wherein the upper paperboard and the lower paperboard are respectively located at the upper and lower sides of the middle paperboard, and the corrugated paper core is arranged between the upper paperboard and the middle paperboard and between the middle paperboard and the lower paperboard; a plurality of evenly distributed pressure-resistant elastic strips are arranged in the wave gaps of the corrugated paper core; and anti-bending reinforcing ribs are arranged inside the upper paperboard and inside the lower paperboard.

[0008] Preferably, edge-sealed paperboards are provided on all sides of the upper paperboard, the middle paperboard, the lower paperboard and the corrugated paper core.

[0009] Preferably, the upper paperboard, the middle paperboard, the lower paperboard, the corrugated paper core and the edge-sealed paperboard are pressed and fixedly connected by adhesive.

[0010] Preferably, the pressure-resistant elastic strip comprises an extruded tube, and two arc-shaped extruded strips are symmetrically fixedly arranged inside the extruded tube, and the curvatures of the two arc-shaped extruded strips extend to both sides.

[0011] Preferably, the anti-bending reinforcement ribs include a plurality of transverse ribs and a plurality of longitudinal ribs, and the plurality of transverse ribs and the plurality of longitudinal ribs are arranged in a staggered distribution.

[0012] Preferably, the transverse ribs and the longitudinal ribs are both cylindrical steel metal strips.

[0013] Compared with the prior art, the utility model provides a high-strength corrugated paperboard that is resistant to pressure and bending, and has the following beneficial effects:

[0014] 1. The high-strength corrugated paperboard with pressure resistance and bending resistance is provided with pressure-resistant elastic strips and bending resistance reinforcement ribs. The pressure-resistant elastic strips are arranged in the wave gap of the corrugated paper core. When the upper paperboard is squeezed by gravity, the corrugated paper core is deformed and squeezed, and the pressure-resistant elastic strips are squeezed at the same time. The elastic effect of the pressure-resistant elastic strips can improve the restoring force of the upper paperboard after extrusion and bending. At the same time, the bending resistance reinforcement ribs can increase the structural strength of the upper and lower paperboards, making the upper and lower paperboards not easily deformed by extrusion, thereby improving the pressure resistance and bending resistance.

[0015] 2. The high-strength corrugated paperboard with pressure resistance and bending resistance is provided with an extrusion tube and an arc extrusion strip, and the arc extrusion strip is arranged inside the extrusion tube. When the extrusion tube is extruded and deformed, the two arc extrusion strips inside are squeezed to both sides, which can increase the extrusion resistance of the extrusion tube.

[0016] 3. The high-strength corrugated paperboard with pressure resistance and bending resistance has transverse ribs and longitudinal ribs, which are staggered to form a mesh structure, so that the internal structural strength of the upper and lower paperboards can be increased, and the compression and bending resistance of the upper and lower paperboards can be improved.

[0017] The parts not involved in the device are the same as the existing technology or can be implemented by using the existing technology. The utility model adds pressure-resistant elastic strips and bending-resistant reinforcement ribs inside the corrugated cardboard, so that the pressure-resistant and bending-resistant performance of the corrugated cardboard is improved, and the thickness of the corrugated cardboard does not change significantly, thereby improving space utilization and practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic structural diagram of a high-strength corrugated paperboard that is resistant to compression and bending proposed by the utility model;

[0019] Figure 2 for Figure 1 Schematic diagram of the structure of the middle pressure-resistant elastic strip;

[0020] Figure 3 for Figure 1 Schematic diagram of the structure of the middle bending reinforcement.

[0021] In the figure: 1. upper cardboard; 2. middle cardboard; 3. lower cardboard; 4. corrugated paper core; 5. pressure-resistant elastic strip; 6. bending-resistant reinforcing ribs; 7. edge-sealed cardboard; 8. extrusion tube; 9. arc-shaped extrusion strip; 10. transverse ribs; 11. longitudinal ribs. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0024] Reference Figure 1 A high-strength corrugated paperboard with resistance to pressure and bending, comprising an upper paperboard 1, a middle paperboard 2, a lower paperboard 3 and a corrugated paper core 4, wherein the upper paperboard 1 and the lower paperboard 3 are respectively located at the upper and lower sides of the middle paperboard 2, the corrugated paper core 4 is arranged between the upper paperboard 1 and the middle paperboard 2 and between the middle paperboard 2 and the lower paperboard 3, a plurality of evenly distributed pressure-resistant elastic strips 5 are arranged in the wave gap of the corrugated paper core 4, and the interior of the upper paperboard 1 and the interior of the lower paperboard 3 are both provided with anti-bending reinforcement ribs 6, when the upper paperboard 1 is compressed by gravity, the corrugated paper core 4 is deformed and compressed, and the pressure-resistant elastic strips 5 are compressed at the same time, the elastic effect of the pressure-resistant elastic strips 5 can improve the restoring force of the compression and bending of the upper paperboard 1, and the anti-bending reinforcement ribs 6 can increase the structural strength of the upper paperboard 1 and the lower paperboard 3, so that the upper paperboard 1 and the lower paperboard 3 are not easily deformed by compression, and the pressure-resistant and anti-bending performance is improved. Edge-sealing cardboards 7 are arranged on the four sides of the upper cardboard 1, the middle cardboard 2, the lower cardboard 3 and the corrugated paper core 4. The upper cardboard 1, the middle cardboard 2, the lower cardboard 3, the corrugated paper core 4 and the edge-sealing cardboards 7 are pressed and fixedly connected by adhesive, and the edge-sealing cardboards 7 play the role of edge sealing.

[0025] Reference Figure 1-2 The pressure-resistant elastic strip 5 includes an extruded tube 8, and two arc-shaped extruded strips 9 are symmetrically fixed inside the extruded tube 8. The curvature of the two arc-shaped extruded strips 9 extends to both sides. When the extruded tube 8 is extruded and deformed, the two arc-shaped extruded strips 9 inside are squeezed to both sides, which can increase the anti-extrusion performance of the extruded tube 8.

[0026] Reference Figure 1 and 3The anti-bending reinforcement ribs 6 include a plurality of transverse ribs 10 and a plurality of longitudinal ribs 11, which are arranged in a staggered distribution. Both the transverse ribs 10 and the longitudinal ribs 11 are made of cylindrical steel metal strips. The transverse ribs 10 and the longitudinal ribs 11 are staggered to form a mesh structure, which can increase the internal structural strength of the upper cardboard 1 and the lower cardboard 3 and improve the compressive bending resistance of the upper cardboard 1 and the lower cardboard 3.

[0027] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A high-strength corrugated paperboard with compression resistance and bending resistance, comprising an upper paperboard (1), a middle paperboard (2), a lower paperboard (3) and a corrugated paper core (4), characterized in that: The upper paperboard (1) and the lower paperboard (3) are respectively located on the upper and lower sides of the middle paperboard (2); the corrugated paper core (4) is arranged between the upper paperboard (1) and the middle paperboard (2) and between the middle paperboard (2) and the lower paperboard (3); A plurality of evenly distributed pressure-resistant elastic strips (5) are arranged in the wave gaps of the corrugated paper core (4); Anti-bending reinforcement ribs (6) are provided inside the upper paperboard (1) and inside the lower paperboard (3).

2. The high-strength corrugated paperboard with pressure resistance and bending resistance according to claim 1, characterized in that: Edge-sealed paperboards (7) are provided on all sides of the upper paperboard (1), the middle paperboard (2), the lower paperboard (3) and the corrugated paper core (4).

3. The high-strength corrugated paperboard with pressure resistance and bending resistance according to claim 2, characterized in that: The upper paperboard (1), the middle paperboard (2), the lower paperboard (3), the corrugated paper core (4) and the edge-sealed paperboard (7) are pressed and fixedly connected by adhesive.

4. The high-strength corrugated paperboard with pressure resistance and bending resistance according to claim 1, characterized in that: The pressure-resistant elastic strip (5) comprises an extruded tube (8), and two arc-shaped extruded strips (9) are symmetrically fixedly arranged inside the extruded tube (8), and the curvatures of the two arc-shaped extruded strips (9) extend to both sides.

5. The high-strength corrugated paperboard with pressure resistance and bending resistance according to claim 1, characterized in that: The anti-bending reinforcement ribs (6) comprise a plurality of transverse ribs (10) and a plurality of longitudinal ribs (11), and the plurality of transverse ribs (10) and the plurality of longitudinal ribs (11) are arranged in a staggered distribution.

6. The high-strength corrugated paperboard with pressure resistance and bending resistance according to claim 5, characterized in that: The transverse ribs (10) and the longitudinal ribs (11) are both made of cylindrical steel metal strips.

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