Puncture-resistant composite paperboard and carton

Abstract

A plurality of upper barrier strips are arranged on the upper surface of a stab-resistant hard board, a plurality of lower barrier strips are arranged on the lower surface of the stab-resistant hard board, each upper barrier strip is respectively inserted between two adjacent wave troughs of an upper fixed corrugated board, each lower barrier strip is respectively inserted between two adjacent wave crests of a lower fixed corrugated board, and the upper barrier strips and the lower barrier strips are arranged on the upper surface of the stab-resistant hard board. A plurality of stab-resistant gaps are arranged between the upper fixed corrugated board and the stab-resistant hard board and between the lower fixed corrugated board and the stab-resistant hard board respectively, every two adjacent stab-resistant gaps are separated oppositely, each stab-resistant gap is filled with non-Newtonian fluid, the non-Newtonian fluid resists puncture of large impact force, and the stab-resistant hard board resists puncture of small impact force. Therefore, the puncture resistance of the composite paperboard is improved. The utility model further discloses a puncture-resistant carton which is made of the composite paperboard, so that the puncture resistance of the carton is improved, and the protectiveness is enhanced.

Description

Technical Field

[0001] This utility model relates to the field of cardboard box technology, and in particular to a puncture-resistant composite cardboard and cardboard box. Background Technology

[0002] With the increasing development of the logistics industry, cardboard boxes are needed to pack and protect goods during transportation. However, the main material of cardboard boxes is recycled paper, which has poor puncture resistance and is easily punctured, damaging the items inside. Existing technologies increase puncture resistance by increasing the thickness of the cardboard and coating it with a puncture-resistant film. However, these methods can only resist light puncture forces and cannot resist larger puncture forces. Therefore, it is necessary to improve them. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a puncture-resistant composite cardboard and carton, which improves the puncture resistance of the cardboard, and can not only resist light puncture force, but also resist larger puncture force, thereby increasing the carton's ability to protect the items.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is: a puncture-resistant composite paperboard, comprising, from top to bottom, an upper paperboard, an upper fixed corrugated board, a puncture-resistant rigid board, a lower fixed corrugated board, and a lower paperboard.

[0005] The upper surface of the stab-resistant rigid plate is provided with multiple upward-protruding upper baffles, which are spaced apart in the transverse direction and penetrate the stab-resistant rigid plate in the longitudinal direction. The lower surface of the stab-resistant rigid plate is provided with multiple downward-protruding lower baffles, which are spaced apart in the longitudinal direction and penetrate the stab-resistant rigid plate in the transverse direction.

[0006] The upper and lower fixed corrugated plates are arranged vertically and alternately. Each upper baffle is inserted between two adjacent troughs of the upper fixed corrugated plate, and each lower baffle is inserted between two adjacent peaks of the lower fixed corrugated plate. Multiple anti-stab gaps are provided between the upper and lower fixed corrugated plates and the anti-stab hard plate. Two adjacent anti-stab gaps are relatively separated. Each anti-stab gap is filled with non-Newtonian fluid.

[0007] In a further technical solution, multiple upper buffers are provided between the upper fixed corrugated board and the upper cardboard, with each upper buffer located between two adjacent crests of the upper fixed corrugated board. Multiple lower buffers are provided between the lower fixed corrugated board and the lower cardboard, with each lower buffer located between two adjacent troughs of the lower fixed corrugated board. Both the upper and lower buffers are made of elastic material.

[0008] In a further technical solution, the gaps between the two sides of the upper baffle and the upper fixed corrugated plate, as well as the gaps between the two sides of the lower baffle and the lower fixed corrugated plate, are filled with solid gel.

[0009] In a further technical solution, a wear-resistant buffer layer is provided on the lower surface of the lower cardboard. The wear-resistant buffer layer includes a first cardboard, a wear-resistant corrugated cardboard, and a second cardboard. The first cardboard is provided on the lower surface of the lower cardboard, the wear-resistant corrugated cardboard is provided on the lower surface of the first cardboard, and the second cardboard is provided on the lower surface of the wear-resistant corrugated cardboard.

[0010] In a further technical solution, the flute shape of both the upper fixed corrugated board and the lower fixed corrugated board is U-shaped, while the flute shape of the wear-resistant corrugated cardboard is V-shaped.

[0011] In a further technical solution, a buffer adhesive layer is also provided between the first cardboard and the lower cardboard.

[0012] In a further technical solution, the lower surface of the second cardboard is coated with a wear-resistant layer, and the upper surface of the upper cardboard is provided with a waterproof layer.

[0013] In a further technical solution, the stab-resistant rigid plate is made of PVC or PC.

[0014] A puncture-resistant cardboard box includes a box body, a box lid, and a box base. The box lid is located on the upper part of the box body, and the box base is located on the lower part of the box body. The box body includes four L-shaped connectors and four side panels. Each L-shaped connector has slots on both sides, and each side panel is inserted into the slots of two adjacent L-shaped connectors.

[0015] The box cover includes a top plate and four upper fastening screws, and the box base includes a bottom plate and four lower fastening screws. Each L-shaped connector has threaded holes at both its upper and lower ends. The top plate is fixed to the upper part of the box body using the upper fastening screws, which are threaded into the threaded holes at the upper ends of each L-shaped connector. The bottom plate is fixed to the lower part of the box body using the lower fastening screws, which are threaded into the threaded holes at the lower ends of each L-shaped connector.

[0016] Each side panel, top panel, and bottom panel is made of the composite paperboard of this utility model.

[0017] In a further technical solution, the inner wall of the slot is provided with multiple barbs at intervals, each barb facing the bottom of the slot.

[0018] An anti-slip pad is provided at the bottom of the tightening screw.

[0019] The advantages of this invention compared to existing technologies are as follows: The puncture-resistant rigid plate resists the impact of light puncture forces from sharp objects, while the non-Newtonian fluid resists the impact of larger puncture forces, thus improving puncture resistance. The upper and lower baffles of the puncture-resistant rigid plate divide the non-Newtonian fluid into multiple sections, facilitating fixation and preventing accumulation of the non-Newtonian fluid during prolonged vertical placement. The upper and lower baffles are perpendicular to each other to increase the coverage area of ​​the non-Newtonian fluid. When the composite cardboard is placed vertically, at least one layer of non-Newtonian fluid is laid flat on the composite cardboard; when the composite cardboard is placed horizontally, two layers of non-Newtonian fluid overlap, further improving puncture resistance. The L-shaped connectors combine the composite cardboard pieces into a carton, ensuring high puncture resistance on all sides of the carton and improving its protective performance. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Figure 1 This is a structural schematic diagram of the composite paperboard of this utility model;

[0022] Figure 2 This is the utility model Figure 1 Enlarged view of part A;

[0023] Figure 3 This is an exploded view of the composite paperboard of this utility model;

[0024] Figure 4 This is a structural schematic diagram of the cardboard box of this utility model;

[0025] Figure 5 This is an exploded view of the cardboard box of this utility model;

[0026] Figure 6 This is a top view of the L-shaped connector of this utility model.

[0027] In the picture:

[0028] 11. Top cardboard, 111. Waterproof layer, 12. Bottom cardboard;

[0029] 21. Top-fixed corrugated sheet; 22. Bottom-fixed corrugated sheet;

[0030] 3. Puncture-resistant hard plate; 31. Upper stop strip; 32. Lower stop strip;

[0031] 4. Non-Newtonian fluids;

[0032] 51 Upper buffer component, 52 Lower buffer component, 53 Buffer rubber layer;

[0033] 6. Solid gel;

[0034] 71 First paperboard, 72 Abrasion-resistant corrugated paperboard, 73 Second paperboard, 731 Abrasion-resistant layer;

[0035] 81 Side plate, 82 Top plate, 83 Bottom plate, 84 Upper fastening screw, 85 Lower fastening screw, 86 Anti-slip pad

[0036] 9L type connector, 91 slot, 92 barb, 93 threaded hole. Detailed Implementation

[0037] The following are merely preferred embodiments of the present invention and do not limit the scope of protection of the present invention.

[0038] A puncture-resistant composite paperboard, such as Figures 1 to 3 As shown, the assembly includes, from top to bottom, an upper cardboard 11, an upper fixed corrugated board 21, a stab-resistant rigid board 3, a lower fixed corrugated board 22, and a lower cardboard 12. The upper surface of the stab-resistant rigid board 3 has multiple upward-protruding upper baffles 31, which are spaced apart laterally and penetrate the stab-resistant rigid board 3 longitudinally. The lower surface of the stab-resistant rigid board 3 has multiple downward-protruding lower baffles 32, which are spaced apart longitudinally and penetrate the stab-resistant rigid board 3 laterally. The upper fixed corrugated board 21 and the lower fixed corrugated board 22 are vertically staggered. Each upper baffle 31 is inserted between two adjacent troughs of the upper fixed corrugated board 21, and each lower baffle 32 is inserted between two adjacent crests of the lower fixed corrugated board 22. Multiple stab-resistant gaps are provided between the upper fixed corrugated board 21 and the lower fixed corrugated board 22 and the stab-resistant rigid board 3, with adjacent stab-resistant gaps being relatively separated. Each stab-resistant gap is filled with a non-Newtonian fluid 4. Traditional cardboard can only withstand punctures with low puncture force, not those with high puncture force. This invention improves puncture resistance by using a puncture-resistant rigid plate 3 to resist the impact of light puncture force from sharp objects and a non-Newtonian fluid 4 to resist the impact of greater puncture force from sharp objects. The non-Newtonian fluid 4 is divided into multiple pieces by the upper baffle 31 and lower baffle 32 of the puncture-resistant rigid plate 3, which facilitates fixation and prevents the accumulation of non-Newtonian fluid 4 when placed vertically for a long time. The upper baffle 31 and lower baffle 32 are set perpendicular to each other to increase the coverage of non-Newtonian fluid 4. When the composite cardboard is placed vertically, at least one layer of non-Newtonian fluid 4 is laid flat on the composite cardboard, and when the composite cardboard is placed horizontally, two layers of non-Newtonian fluid 4 overlap, further improving puncture resistance.

[0039] Specifically, multiple upper cushioning elements 51 are provided between the upper fixed corrugated board 21 and the upper cardboard 11, with each upper cushioning element 51 located between two adjacent crests of the upper fixed corrugated board 21. Multiple lower cushioning elements 52 are provided between the lower fixed corrugated board 22 and the lower cardboard 12, with each lower cushioning element 52 located between two adjacent troughs of the lower fixed corrugated board 22. Both the upper and lower cushioning elements 51 and 52 are made of elastic material. The upper and lower cushioning elements 51 and 52 increase the elasticity of the composite cardboard, thereby improving cushioning performance, preventing damage to the composite cardboard from impacts, and enhancing the protection of the packaged goods. The upper and lower cushioning elements 51 and 52 are respectively positioned within the gaps between the upper and lower fixed corrugated boards 21 and 22, thereby reducing space occupation, increasing the structural compactness of the composite cardboard, and reducing its thickness.

[0040] Specifically, solid gel 6 is filled in the gaps between the two sides of the upper baffle 31 and the upper fixed corrugated plate 21, and in the gaps between the two sides of the lower baffle 32 and the lower fixed corrugated plate 22. The upper baffle 31 and the lower baffle 32 are fixed to the upper fixed corrugated plate 21 and the lower fixed corrugated plate 22 by solid gel 6 to improve the connection strength, increase the sealing performance, prevent the non-Newtonian fluid 4 from overflowing, and improve reliability and stability.

[0041] Specifically, the lower surface of the lower cardboard 12 is provided with an abrasion-resistant cushioning layer, which includes a first cardboard 71, an abrasion-resistant corrugated cardboard 72, and a second cardboard 73. The first cardboard 71 is disposed on the lower surface of the lower cardboard 12, the abrasion-resistant corrugated cardboard 72 is disposed on the lower surface of the first cardboard 71, and the second cardboard 73 is disposed on the lower surface of the abrasion-resistant corrugated cardboard 72. The abrasion-resistant cushioning layer further improves the abrasion resistance and cushioning properties of the composite cardboard.

[0042] Specifically, the upper fixed corrugated board 21 and the lower fixed corrugated board 22 both have U-shaped flutes, while the wear-resistant corrugated cardboard 72 has a V-shaped flute.

[0043] Specifically, a cushioning adhesive layer 53 is provided between the first cardboard 71 and the lower cardboard 12. The cushioning adhesive layer 53 is made of gel adhesive, which not only further improves the cushioning but also enhances the shock absorption performance.

[0044] Specifically, the lower surface of the second paperboard 73 is coated with an abrasion-resistant layer 731, and the upper surface of the upper paperboard 11 is provided with a waterproof layer 111. The abrasion-resistant layer 731 further improves abrasion resistance, while the waterproof layer 111 gives the composite paperboard waterproofness, thereby improving the overall protective performance of the composite paperboard.

[0045] Specifically, the stab-resistant hard plate 3 is made of PVC or PC.

[0046] A puncture-resistant cardboard box, such as Figures 4 to 6As shown, the enclosure includes a box body, a lid, and a base. The lid is located on the upper part of the box body, and the base is located on the lower part. The box body includes four L-shaped connectors 9 and four side plates 81. Each L-shaped connector 9 has slots 91 on both sides. Each side plate 81 is inserted into the slots 91 of two adjacent L-shaped connectors 9. The lid includes a top plate 82 and four upper fastening screws 84. The base includes a bottom plate 83 and four lower fastening screws 85. Each L-shaped connector 9 has threaded holes 93 at both its upper and lower ends. The plate 82 is fixedly installed on the upper part of the box body by various upper fastening screws 84. Each upper fastening screw 84 is threadedly connected to the threaded hole 93 located at the upper end of each L-shaped connector 9. The bottom plate 83 is fixedly installed on the lower part of the box body by various lower fastening screws 85. Each lower fastening screw 85 is threadedly connected to the threaded hole 93 located at the lower end of each L-shaped connector 9. Each side plate 81, top plate 82, and bottom plate 83 is made of the composite cardboard of this utility model, with the upper cardboard 11 of each composite cardboard facing the inside of the carton. The composite cardboard is assembled into a carton by the L-shaped connectors 9, so that all sides of the carton have high puncture resistance and improve the protective performance of the carton.

[0047] Specifically, the inner wall of the slot 91 is provided with multiple barbs 92 at intervals, each barb 92 facing the bottom of the slot 91. The barbs 92 insert into the upper cardboard 11 and the wear-resistant buffer layer, thereby improving the connection strength between the L-shaped connector 9 and the composite cardboard and preventing detachment. No glue or fasteners are required for connection, making it convenient to use. An anti-slip pad 86 is provided at the lower part of the lower fastening screw 85. The anti-slip pad 86 can improve anti-slip properties and prevent the carton from shifting during transportation.

[0048] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. A puncture-resistant composite paperboard, characterized in that: It includes, from top to bottom, an upper cardboard (11), an upper fixed corrugated board (21), a stab-proof hardboard (3), a lower fixed corrugated board (22), and a lower cardboard (12). The upper surface of the stab-resistant hard plate (3) is provided with multiple upward protruding upper baffles (31), each upper baffle (31) is spaced apart in the transverse direction and penetrates the stab-resistant hard plate (3) in the longitudinal direction. The lower surface of the stab-resistant hard plate (3) is provided with multiple downward protruding lower baffles (32), each lower baffle (32) is spaced apart in the longitudinal direction and penetrates the stab-resistant hard plate (3) in the transverse direction. The upper fixed corrugated plate (21) and the lower fixed corrugated plate (22) are arranged vertically and alternately. Each upper baffle (31) is inserted between two adjacent troughs of the upper fixed corrugated plate (21), and each lower baffle (32) is inserted between two adjacent peaks of the lower fixed corrugated plate (22). Multiple anti-stab gaps are provided between the upper fixed corrugated plate (21) and the lower fixed corrugated plate (22) and the anti-stab hard plate (3). Two adjacent anti-stab gaps are relatively separated. Each anti-stab gap is filled with non-Newtonian fluid (4).

2. The puncture-resistant composite paperboard according to claim 1, characterized in that: Multiple upper buffers (51) are provided between the upper fixed corrugated board (21) and the upper cardboard (11). Each upper buffer (51) is located between two adjacent peaks of the upper fixed corrugated board (21). Multiple lower buffers (52) are provided between the lower fixed corrugated board (22) and the lower cardboard (12). Each lower buffer (52) is located between two adjacent troughs of the lower fixed corrugated board (22). Both the upper buffer (51) and the lower buffer (52) are made of elastic material.

3. The puncture-resistant composite paperboard according to claim 1, characterized in that: The lower surface of the lower cardboard (12) is provided with a wear-resistant buffer layer, which includes a first cardboard (71), a wear-resistant corrugated cardboard (72), and a second cardboard (73). The first cardboard (71) is disposed on the lower surface of the lower cardboard (12), the wear-resistant corrugated cardboard (72) is disposed on the lower surface of the first cardboard (71), and the second cardboard (73) is disposed on the lower surface of the wear-resistant corrugated cardboard (72).

4. The puncture-resistant composite paperboard according to claim 3, characterized in that: The upper fixed corrugated board (21) and the lower fixed corrugated board (22) are both U-shaped, and the wear-resistant corrugated cardboard (72) is V-shaped.

5. The puncture-resistant composite paperboard according to claim 3, characterized in that: A buffer adhesive layer (53) is also provided between the first cardboard (71) and the lower cardboard (12).

6. The puncture-resistant composite paperboard according to claim 3, characterized in that: The lower surface of the second cardboard (73) is coated with a wear-resistant layer (731), and the upper surface of the upper cardboard (11) is provided with a waterproof layer (111).

7. The puncture-resistant composite paperboard according to claim 1, characterized in that: The stab-resistant hard plate (3) is a PVC plate or a PC plate.

8. A puncture-resistant cardboard box, comprising a box body, a box lid, and a box base, wherein the box lid is disposed on the upper part of the box body, and the box base is disposed on the lower part of the box body, characterized in that: The housing includes four L-shaped connectors (9) and four side panels (81). Each L-shaped connector (9) has slots (91) on both sides. Each side panel (81) is inserted into the slots (91) of two adjacent L-shaped connectors (9). The box cover includes a top plate (82) and four upper fastening screws (84), and the box base includes a bottom plate (83) and four lower fastening screws (85). Each L-shaped connector (9) has threaded holes (93) at its upper and lower ends. The top plate (82) is fixedly installed on the upper part of the box body by the upper fastening screws (84), and each upper fastening screw (84) is threadedly connected to the threaded holes (93) at the upper end of each L-shaped connector (9). The bottom plate (83) is fixedly installed on the lower part of the box body by the lower fastening screws (85), and each lower fastening screw (85) is threadedly connected to the threaded holes (93) at the lower end of each L-shaped connector (9). Each side panel (81), top panel (82), and bottom panel (83) is made of the composite paperboard as described in any one of claims 1 to 7.

9. A puncture-resistant cardboard box according to claim 8, characterized in that: The inner wall of the slot (91) is provided with a plurality of barbs (92) spaced apart, and each barb (92) is positioned facing the bottom of the slot (91). The lower part of the lower fastening screw (85) is provided with an anti-slip pad (86).

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