Paper packaging box with good compression resistance effect

By setting L-shaped reinforcing blocks and grid plates at the four corners of the inner and outer shells of the paper packaging box, and reinforcing plates and corrugated plates inside the box lid, combined with a waterproof coating, the problem of insufficient pressure resistance of paper packaging boxes is solved, and better pressure resistance and waterproof effect are achieved.

CN224159583UActive Publication Date: 2026-04-24INT PAPER (TIANJIN) PACKAGING CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
INT PAPER (TIANJIN) PACKAGING CO LTD
Filing Date
2025-06-06
Publication Date
2026-04-24

AI Technical Summary

Technical Problem

Existing paper packaging boxes have pleats added to the four corners to improve compression resistance, but the overall compression resistance is not good, especially in terms of lateral compression resistance.

Method used

L-shaped reinforcing blocks are set at the four corners of the inner shell and the outer shell. A grid plate is provided between the inner shell and the outer shell. A reinforcing plate is provided inside the box cover. A corrugated plate is provided between the box body and the cover plate. The exterior is coated with a waterproof coating.

Benefits of technology

It improves the compressive strength of paper packaging boxes in all directions, enhances structural strength and waterproof performance, and improves the practicality of packaging boxes.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a paper packing box with a good compression resistance effect, which comprises a box body, a box cover is arranged above the box body, the box body comprises an inner shell and an outer shell, the inner shell and the outer shell have the same structure, L-shaped reinforcing blocks are arranged at four corners between the inner shell and the outer shell, a grid plate is arranged between the inner shell and the outer shell, and the L-shaped reinforcing blocks are connected with the grid plate. The box cover comprises a cover plate, a reinforcing plate is arranged in the cover plate, a sealing paperboard is arranged below the reinforcing plate, the cover plate comprises a third paperboard and a fourth paperboard, and a second corrugated plate is arranged between the third paperboard and the fourth paperboard. The paper packaging box is simple in structure, the box body and the cover plate have good anti-pressure capacity, the anti-pressure capacity of the packaging box in all directions is effectively improved, and the practicability of the packaging box is improved.
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Description

Technical Field

[0001] This utility model relates to the field of paper packaging box technology, and in particular to a paper packaging box with good compression resistance. Background Technology

[0002] With the rapid development of the internet, online shopping has become a popular industry, and it has also spawned many other industries, especially the express delivery industry. Most express deliveries use paper boxes to package items. To increase the compressive strength of existing cardboard boxes, pleats are usually added to the four corners. While this method does improve the box's resistance, its overall performance is not ideal because the inner wall is hollow. The reinforcement at the four corners is insufficient for lateral compression, making it unsuitable for general use. Therefore, we propose a paper box with superior compressive strength. Utility Model Content

[0003] To address the aforementioned problems, this invention provides a paper packaging box with excellent compression resistance. This invention solves the problem that existing packaging boxes, which typically incorporate pleats at all four corners to increase compression strength, suffer from poor compression resistance because their hollow inner walls and the addition of reinforcement at the four corners result in inadequate lateral compression resistance, hindering the box's usability.

[0004] This utility model discloses a paper packaging box with good pressure resistance, comprising a box body, a box cover on the top of the box body, the box body comprising an inner shell and an outer shell, the inner shell and the outer shell having the same structure, L-shaped reinforcing blocks provided at the four corners between the inner shell and the outer shell, a grid plate provided between the inner shell and the outer shell, the box cover comprising a cover plate, a reinforcing plate provided inside the cover plate, a sealing cardboard provided below the reinforcing plate, the cover plate comprising a third cardboard and a fourth cardboard, a second corrugated plate provided between the third cardboard and the fourth cardboard.

[0005] In the above scheme, the inner shell includes a first cardboard and a second cardboard, and a first corrugated plate is provided between the first cardboard and the second cardboard.

[0006] In the above scheme, the L-shaped reinforcing block is a foam board.

[0007] In the above scheme, the reinforcing plate is a honeycomb paperboard.

[0008] In the above solution, the outer surfaces of both the box body and the box lid are provided with a waterproof coating.

[0009] The advantages and beneficial effects of this utility model are as follows: This utility model provides a paper packaging box with good compression resistance. The L-shaped reinforcing blocks increase the structural strength and compression resistance of the four corners of the inner and outer shells. The first corrugated plate supports the middle of the first and second cardboard, thereby effectively increasing the overall compression resistance of the inner shell. The grid plate supports the middle of the inner and outer shells. The reinforcing plate effectively increases the overall structural strength of the lid. The second corrugated plate supports the middle of the third and fourth cardboard, thereby effectively increasing the overall compression resistance of the lid. This paper packaging box has a simple structure, and both the box body and the lid have good compression resistance, effectively improving the compression resistance of the packaging box in all directions and enhancing its practicality. Attached Figure Description

[0010] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0011] Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] Figure 2 This is a cross-sectional view of the present invention;

[0013] Figure 3 This is a cross-sectional view of the box body of this utility model;

[0014] Figure 4 This is a schematic diagram of part A of the present invention;

[0015] Figure 5 This is a schematic diagram of part B of the present invention;

[0016] Figure 6 This is a schematic diagram of part C of the present invention.

[0017] In the diagram: 1. Box body 11. Inner shell 111. First cardboard 112. Second cardboard 113. First corrugated board 12. Outer shell 13. L-shaped reinforcing block 14. Grid plate 2. Box lid 21. Cover plate 211. Third cardboard 212. Second corrugated board 213. Fourth cardboard 22. Reinforcing plate 23. Sealing cardboard. Detailed Implementation

[0018] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0019] like Figure 1-6 As shown, this utility model is a paper packaging box with good pressure resistance, including a box body 1, a box cover 2 on the top of the box body 1, and an inner shell 11 and an outer shell 12. The inner shell 11 and the outer shell 12 have the same structure. L-shaped reinforcing blocks 13 are provided at the four corners between the inner shell 11 and the outer shell 12. The L-shaped reinforcing blocks 13 increase the structural strength and pressure resistance of the four corners of the inner shell 11 and the outer shell 12. A grid plate 14 is provided between the inner shell 11 and the outer shell 12. The grid plate 14 can provide support between the inner shell 11 and the outer shell 12. The outer shell 12 is supported in the middle. The lid 2 includes a cover plate 21. A reinforcing plate 22 is provided inside the cover plate 21. The reinforcing plate 22 effectively increases the overall structural strength of the lid 2. A sealing cardboard 23 is provided below the reinforcing plate 22. The cover plate 21 includes a third cardboard 211 and a fourth cardboard 213. A second corrugated plate 212 is provided between the third cardboard 211 and the fourth cardboard 213. The second corrugated plate 212 supports the middle of the third cardboard 211 and the fourth cardboard 213, thereby effectively increasing the overall compressive strength of the cover plate 21.

[0020] The inner shell 11 includes a first cardboard 111 and a second cardboard 112. A first corrugated plate 113 is provided between the first cardboard 111 and the second cardboard 112. The first corrugated plate 113 supports the middle part of the first cardboard 111 and the second cardboard 112, thereby effectively increasing the overall compressive strength of the inner shell 11.

[0021] The L-shaped reinforcing block 13 is made of foam board.

[0022] The reinforcing plate 22 is a honeycomb paperboard.

[0023] The outer surfaces of both the box body 1 and the lid 2 are provided with a waterproof coating, which effectively increases the waterproof capability of the box body 1 and the lid 2.

[0024] Specifically, in this utility model, the L-shaped reinforcing block 13 increases the structural strength and compressive strength of the four corners of the inner shell 11 and the outer shell 12. The first corrugated plate 113 supports the middle of the first cardboard 111 and the second cardboard 112, thereby effectively increasing the overall compressive strength of the inner shell 11. The grid plate 14 supports the middle of the inner shell 11 and the outer shell 12. The reinforcing plate 22 effectively increases the overall structural strength of the lid 2. The second corrugated plate 212 supports the middle of the third cardboard 211 and the fourth cardboard 213, thereby effectively increasing the overall compressive strength of the cover plate 21.

[0025] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A paper packaging box with good pressure resistance, comprising a box body (1), characterized in that, The box body (1) is provided with a lid (2) on top. The box body (1) includes an inner shell (11) and an outer shell (12). The inner shell (11) and the outer shell (12) have the same structure. L-shaped reinforcing blocks (13) are provided at the four corners between the inner shell (11) and the outer shell (12). A grid plate (14) is provided between the inner shell (11) and the outer shell (12). The lid (2) includes a cover plate (21). A reinforcing plate (22) is provided inside the cover plate (21). A sealing cardboard (23) is provided below the reinforcing plate (22). The cover plate (21) includes a third cardboard (211) and a fourth cardboard (213). A second corrugated plate (212) is provided between the third cardboard (211) and the fourth cardboard (213).

2. The paper packaging box with good compression resistance according to claim 1, characterized in that, The inner shell (11) includes a first cardboard (111) and a second cardboard (112), and a first corrugated plate (113) is provided between the first cardboard (111) and the second cardboard (112).

3. The paper packaging box with good compression resistance according to claim 1, characterized in that, The L-shaped reinforcing block (13) is a foam board.

4. The paper packaging box with good compression resistance according to claim 1, characterized in that, The reinforcing plate (22) is a honeycomb paperboard.

5. The paper packaging box with good compression resistance according to claim 1, characterized in that, The outer surfaces of the box body (1) and the box lid (2) are all provided with a waterproof coating.