High-strength pressure-resistant corrugated carton
Patent Information
- Application Number
- CN202522443493.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-18
- Publication Date
- 2026-09-22
- Estimated Expiration
- 2035-11-18
AI Technical Summary
但现有瓦楞纸箱普遍存在结构缺陷：单层或双层瓦楞的承重能力有限，堆叠时易因压力集中导致箱体塌陷；箱体边角为薄弱部位，运输过程中易受碰撞变形，进而影响整体耐压性；箱体拼接处多采用胶带粘合或简单卡扣连接，密封性差且受力不均，长期使用易松动开裂
箱体通过四个侧板以及箱体组成，且每个侧板均由外层瓦楞板、中部增强层、内层瓦楞板组成，而外层瓦楞板和内层瓦楞板均由横向瓦楞层和竖向瓦楞层组成，能够提升整体装置的抗压性能 ，且中部增强层为蜂窝状，在外层瓦楞板、中部增强层、内层瓦楞板的相互配合下，能够进一步提升整体刚性，相较于现有单层瓦楞纸箱耐压强度显著增强，而在箱体的四角设置耐压机构和L型加固板，拼接处受力更均匀，密封性更好，同时可重复拆装使用。
Smart Images
Figure CN224782588U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of corrugated cardboard box technology, and in particular relates to a high-strength and pressure-resistant corrugated cardboard box. Background Technology
[0002] Corrugated cardboard boxes are widely used in logistics and transportation packaging due to their advantages such as lightweight, recyclability, and low cost. However, existing corrugated cardboard boxes generally have structural defects: the load-bearing capacity of single or double-layer corrugated boxes is limited, and the boxes are prone to collapse due to concentrated pressure when stacked; the corners and edges of the boxes are weak points, easily deformed by collisions during transportation, thus affecting the overall pressure resistance; the joints of the boxes are mostly glued with tape or simple buckles, resulting in poor sealing and uneven stress, which can easily loosen and crack after long-term use. These problems make it difficult for existing corrugated cardboard boxes to meet the pressure resistance requirements of heavy goods, long-distance transportation, or multi-layer stacking, thus limiting their application scenarios. Utility Model Content
[0003] This utility model addresses the shortcomings of existing technologies by providing the following technical solution: a high-strength, pressure-resistant corrugated cardboard box, comprising a box body and a box cover movably installed on the upper end of the box body. The box body is provided with four side panels around its perimeter, and a bottom plate is fixedly installed on the bottom of each side panel. A pressure-resistant mechanism is provided on the outer side of the joints between the four side panels, and an L-shaped reinforcing plate is provided on the inner side of the joints between the four side panels. The side panel includes an outer corrugated plate, a middle reinforcing layer, and an inner corrugated plate arranged sequentially from the outside to the inside. The middle reinforcing layer is honeycomb-shaped. Both the outer corrugated plate and the inner corrugated plate are composed of horizontal corrugated layers and vertical corrugated layers.
[0004] As an improvement to the above technical solution, the outer corrugated sheet, the middle reinforcing layer, and the inner corrugated sheet are all fixed by hot pressing with environmentally friendly adhesive, and the outer corrugated sheet, the middle reinforcing layer, and the inner corrugated sheet are bonded to each other by hot melt adhesive.
[0005] As an improvement to the above technical solution, waterproof sealing strips are glued to the joints of the side panels, and the waterproof sealing strips are located inside the pressure-resistant mechanism.
[0006] As an improvement to the above technical solution, a buffer gasket is provided between the box cover and the box body, and the buffer gasket is glued to the top of the box body.
[0007] As an improvement to the above technical solution, the pressure-resistant mechanism includes several L-shaped corner protectors set at the four corners of the box. Several sets of L-shaped snap-fit grooves are opened from top to bottom on the outer side of the four corners of the box. L-shaped protrusions are set at both the upper and lower ends of the L-shaped corner protectors. The L-shaped corner protectors and L-shaped protrusions are integrally formed. The L-shaped protrusions are protruding and are movably inserted into the inside of the L-shaped snap-fit grooves. The inner side of the L-shaped corner protectors fits against the corner of the box.
[0008] As an improvement to the above technical solution, the upper and lower ends of the L-shaped corner protector are provided with several mounting grooves, and fixing bolts are installed inside the mounting grooves. The L-shaped corner protector, the box body, and the L-shaped reinforcing plate are fixed together by fixing bolts.
[0009] The beneficial effects of this utility model are: The box is composed of four side panels and a box body. Each side panel consists of an outer corrugated board, a middle reinforcing layer, and an inner corrugated board. Both the outer and inner corrugated boards are composed of horizontal and vertical corrugated layers, which can improve the overall compression resistance of the device. The middle reinforcing layer is honeycomb-shaped. With the cooperation of the outer corrugated board, the middle reinforcing layer, and the inner corrugated board, the overall rigidity can be further improved. Compared with the existing single-layer corrugated cardboard boxes, the compression resistance is significantly enhanced. The box body is equipped with compression-resistant mechanisms and L-shaped reinforcing plates at the four corners, which makes the stress at the joints more even and the sealing better. It can also be repeatedly disassembled and reused. Attached Figure Description
[0010] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a structural diagram of the box body in this utility model; Figure 3 This is a structural diagram of the side plate in this utility model; Figure 4 This is an exploded view of the side plate in this utility model; Figure 5 This utility model Figure 2 Enlarged structural diagram at point A in the middle; Figure 6 This is a structural diagram of the L-shaped corner protector in this utility model; Figure 7 This is a structural diagram of the horizontal corrugated layer and the vertical corrugated layer in this utility model.
[0011] Reference numerals: 1. Box body; 101. L-shaped snap-fit groove; 11. Buffer gasket; 12. L-shaped reinforcing plate; 13. Waterproof sealing strip; 2. Side plate; 201. Horizontal corrugated layer; 202. Vertical corrugated layer; 21. Outer corrugated plate; 22. Middle reinforcing layer; 221. Honeycomb structure; 23. Inner corrugated plate; 3. Bottom plate; 4. Box cover; 5. L-shaped corner protector; 51. L-shaped protrusion; 52. Mounting groove; 53. Fixing bolt. Detailed Implementation
[0012] To make the objectives, technical solutions, and advantages of this utility model clearer, the following provides a more detailed description of the utility model. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of the utility model.
[0013] Please see Figure 1-7 This utility model provides a technical solution: a high-strength pressure-resistant corrugated cardboard box, including a box body 1 and a box cover 4 movably installed on the upper end of the box body 1. Four side panels 2 are provided around the box body 1. A bottom plate 3 is fixedly installed at the bottom of the side panels 2. A pressure-resistant mechanism is provided on the outer side of the joint between the four side panels 2. An L-shaped reinforcing plate 12 is provided on the inner side of the joint between the four side panels 2. The side panel 2 includes an outer corrugated plate 21, a middle reinforcing layer 22, and an inner corrugated plate 23 arranged sequentially from the outside to the inside. The middle reinforcing layer 22 is honeycomb 221. Both the outer corrugated plate 21 and the inner corrugated plate 23 are composed of a transverse corrugated layer 201 and a vertical corrugated layer 202.
[0014] In this embodiment, the box body 1 is composed of four side panels 2 and the box body 1. Each side panel 2 is composed of an outer corrugated board 21, a middle reinforcing layer 22, and an inner corrugated board 23. The outer corrugated board 21 and the inner corrugated board 23 are both composed of a horizontal corrugated layer 201 and a vertical corrugated layer 202, which can improve the overall compressive strength of the device. The middle reinforcing layer 22 is honeycomb 221. With the cooperation of the outer corrugated board 21, the middle reinforcing layer 22, and the inner corrugated board 23, the overall rigidity can be further improved. Compared with the existing single-layer corrugated cardboard boxes, the compressive strength is significantly enhanced. In addition, the four corners of the box body 1 are equipped with a pressure-resistant mechanism and an L-shaped reinforcing plate 12, which makes the force at the splice more uniform and the sealing better.
[0015] Specifically, the outer corrugated sheet 21, the middle reinforcing layer 22, and the inner corrugated sheet 23 are all fixed by hot pressing with environmentally friendly adhesive, and the outer corrugated sheet 21, the middle reinforcing layer 22, and the inner corrugated sheet 23 are bonded to each other by hot melt adhesive.
[0016] In this embodiment, the outer corrugated sheet 21, the middle reinforcing layer 22, and the inner corrugated sheet 23 are all fixed by hot-pressing with environmentally friendly adhesive. At the same time, the outer corrugated sheet 21, the middle reinforcing layer 22, and the inner corrugated sheet 23 are bonded to each other with hot melt adhesive, thereby making the connection between the three more stable and increasing the overall pressure resistance.
[0017] Specifically, waterproof sealing strips 13 are glued to each pair of splicing points of the side panels 2, and the waterproof sealing strips 13 are located inside the pressure-resistant mechanism. A buffer gasket 11 is provided between the cover 4 and the body 1, and the buffer gasket 11 is glued to the top of the body 1.
[0018] In this embodiment, by setting waterproof sealing strips 13 between the joints of the side plates 2, the waterproof performance of the overall device can be improved, while the setting of buffer gaskets 11 can further increase the compressive strength of the overall device.
[0019] Specifically, the pressure-resistant mechanism includes several L-shaped corner protectors 5 set at the four corners of the housing 1. Several sets of L-shaped snap-fit grooves 101 are opened from top to bottom on the outer side of the four corners of the housing 1. L-shaped protrusions 51 are set at both the upper and lower ends of the L-shaped corner protectors 5. The L-shaped corner protectors 5 and L-shaped protrusions 51 are integrally formed. The L-shaped protrusions 51 are protruding and are movably inserted into the inside of the L-shaped snap-fit grooves 101. The inner side of the L-shaped corner protectors 5 fits against the corner of the housing 1. Several mounting grooves 52 are opened at both the upper and lower ends of the inside of the L-shaped corner protectors 5. Fixing bolts 53 are installed inside the mounting grooves 52. The L-shaped corner protectors 5, the housing 1, and the L-shaped reinforcing plate 12 are fixed together by fixing bolts 53.
[0020] In this embodiment, a pressure-resistant mechanism is set between the two joints of the side plates 2. Under the action of the pressure-resistant mechanism, when the box body 1 is pressed by external pressure, since L-shaped snap-fit grooves 101 are opened at the four corners of the box body 1, and L-shaped corner guards 5 and L-shaped protrusions 51 are installed between the two L-shaped snap-fit grooves 101, the L-shaped protrusions 51 are located at the upper and lower ends of the L-shaped corner guards 5, and the L-shaped protrusions 51 are all protruding and snap-fit into the inside of the L-shaped snap-fit grooves 101, together with the L-shaped reinforcing plates 12 set at the four corners of the inner side of the box body 1, the overall pressure resistance performance of the device can be greatly enhanced. At the same time, the L-shaped corner guards 5, the box body 1, and the L-shaped reinforcing plates 12 are fixedly connected by several fixing bolts 53, making the overall connection more stable, thereby increasing the overall pressure resistance rigidity of the box body.
[0021] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.
Claims
1. A high-strength, pressure-resistant corrugated cardboard box, comprising a box body (1) and a box cover (4) movably mounted on the upper end of the box body (1), characterized in that: The box body (1) is provided with four side panels (2) around its perimeter. A bottom plate (3) is fixedly installed at the bottom of the side panels (2). A pressure-resistant mechanism is provided on the outside of the joints between the four side panels (2). An L-shaped reinforcing plate (12) is provided on the inside of the joints between the four side panels (2). The side panel (2) includes an outer corrugated plate (21), a middle reinforcing layer (22), and an inner corrugated plate (23) arranged sequentially from the outside to the inside. The middle reinforcing layer (22) is honeycomb (221). Both the outer corrugated plate (21) and the inner corrugated plate (23) are composed of a transverse corrugated layer (201) and a vertical corrugated layer (202).
2. A high-strength, pressure-resistant corrugated cardboard box according to claim 1, characterized in that: The outer corrugated board (21), the middle reinforcing layer (22), and the inner corrugated board (23) are all fixed by hot pressing with environmentally friendly adhesive, and the outer corrugated board (21), the middle reinforcing layer (22), and the inner corrugated board (23) are bonded to each other by hot melt adhesive.
3. A high-strength, pressure-resistant corrugated cardboard box according to claim 1, characterized in that: Waterproof sealing strips (13) are glued to each pair of the side plates (2), and the waterproof sealing strips (13) are located inside the pressure-resistant mechanism.
4. A high-strength, pressure-resistant corrugated cardboard box according to claim 1, characterized in that: A buffer gasket (11) is provided between the lid (4) and the body (1), and the buffer gasket (11) is glued to the top of the body (1).
5. A high-strength, pressure-resistant corrugated cardboard box according to claim 1, characterized in that: The pressure-resistant mechanism includes several L-shaped corner protectors (5) set at the four corners of the box (1). Several sets of L-shaped snap-fit grooves (101) are opened from top to bottom on the outer side of the four corners of the box (1). L-shaped protrusions (51) are set at both the upper and lower ends of the L-shaped corner protectors (5). The L-shaped corner protectors (5) and L-shaped protrusions (51) are integrally formed. The L-shaped protrusions (51) are protruding. The L-shaped protrusions (51) are movably inserted into the inside of the L-shaped snap-fit grooves (101). The inner side of the L-shaped corner protectors (5) is in contact with the corner of the box (1).
6. A high-strength, pressure-resistant corrugated cardboard box according to claim 5, characterized in that: The L-shaped corner protector (5) has several mounting grooves (52) at its upper and lower ends. Fixing bolts (53) are installed inside the mounting grooves (52). The L-shaped corner protector (5), the box body (1), and the L-shaped reinforcing plate (12) are fixed together by fixing bolts (53).