Foldable environment-friendly corrugated carton
By setting a reinforcing structure at the bottom of the corrugated cardboard box and using the snap-fit of fasteners and reinforcements, the problem of instability caused by the aging of the bottom baffle of the corrugated cardboard box is solved, which improves the stability and service life of the box and makes it easy to fold and store.
Patent Information
- Application Number
- CN202520633415.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-07
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-04-07
AI Technical Summary
After prolonged use, the bottom baffle of existing corrugated cardboard boxes is prone to aging, leading to instability and potentially causing heavy objects to fall.
A foldable, environmentally friendly corrugated cardboard box is designed. The reinforced structure enhances the stability of the stop section through the interlocking of fasteners and reinforcements. The structure includes a conical protrusion with cylindrical fasteners and arc-shaped elastic components, which improves the load-bearing capacity and stability of the bottom of the box.
It effectively prevents instability caused by aging of the bottom stop of corrugated cardboard boxes, extends service life, and facilitates folding, storage, and transportation.
Smart Images

Figure CN223919847U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of corrugated cardboard box technology, and in particular to a foldable environmentally friendly corrugated cardboard box. Background Technology
[0002] Corrugated cardboard boxes, also commonly referred to as corrugated cartons or cartons, are containers widely used for packaging and transporting goods. They are mainly made of cardboard and have a corrugated laminated structure. Corrugated cardboard boxes typically consist of four side panels. During the production process, an outer layer is glued to both sides of the four side panels to provide waterproofing and reinforcement. The outer layer also allows the side panels to be folded and stored together.
[0003] Corrugated cardboard boxes are easy to store and transport through folding. For example, Chinese Patent Publication No. CN218840072U discloses a foldable cardboard box including a cover, protective strips, and dividers. The cover is fixed to the top of the main board. There are two main boards connected by side panels. First and second limiting blocks are respectively installed on the upper and lower sides of the side panels. A handle is installed on the main board. A divider is provided on one side of the main board, with its sidewall overlapping the side panel and its bottom overlapping a second baffle. The protective layer can wrap and protect the printed layer, improving the waterproof effect of the cardboard box and reducing internal wetness. The multi-layer composite structure inside the main board increases the strength of the cardboard box, and the protective strip reduces wear at the joints. This application has a reasonable structure; the cover and positioning blocks facilitate the closing of the folded cardboard box, and the dividers can be removed to divide the internal space, facilitating the placement and storage of items. The cardboard box is easy to handle and move, making it convenient to use.
[0004] In practice, the four baffles at the bottom of the corrugated cardboard box are fixed together by mutual abutment and the pressure of the weight inside the box. However, after the corrugated cardboard box has been used for a long time, the baffles may become unstable due to aging and brittleness, which may lead to the weight inside the box falling off during handling. Utility Model Content
[0005] The purpose of this invention is to solve the problem that the bottom baffles of the existing corrugated cardboard boxes are unstable due to prolonged use, and to propose a foldable environmentally friendly corrugated cardboard box.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] Design a foldable environmentally friendly corrugated cardboard box, including a box body, the box body being composed of four side panels, characterized in that: the four side panels are fixedly connected end to end and are enclosed by a first easy-fold seam to form the box body;
[0008] The top of the side panel forms a baffle through a second folding seam, and the bottom of the side panel forms a stop through a third folding seam. The stop parts are connected by a reinforcing structure to seal the bottom opening of the box.
[0009] Furthermore, one pair of the baffles on opposite sides is placed on top of the other pair of baffles to cover the top opening of the housing.
[0010] Furthermore, the stop portion includes a first stop portion, a second stop portion, and a pair of third stop portions. The two sides of the free end of the first stop portion extend outward to form an extension portion. The pair of third stop portions are arranged opposite to each other and are both mounted on the top of the extension portion.
[0011] Furthermore, the middle of the free end of the second stop extends outward to form a protrusion, and the second stop rests on top of the pair of third stops, so that the protrusion extends and abuts against the bottom of the first stop.
[0012] Furthermore, the reinforcement structure also includes a fastener and a reinforcement member. The fastener has a cylindrical structure and is fixedly connected to the free ends of the first stop and the protrusion, respectively.
[0013] Furthermore, the reinforcement has a pair of arc-shaped elastic portions on the side near the fixing member, the pair of arc-shaped elastic portions are spaced apart, and each of them has a conical protrusion at its top, the conical protrusion passing through and engaging with the fixing member.
[0014] The present invention proposes a foldable environmentally friendly corrugated cardboard box, which has the following advantages: The bottom of the box is equipped with a reinforcement structure. The reinforcement structure, through the interlocking of fasteners and reinforcement parts, can improve the stability when the four stops are against each other, preventing the bottom stops from becoming unstable due to aging after long-term use of the corrugated cardboard box. On the one hand, the reinforcement structure can effectively improve the load-bearing capacity of the bottom of the box, and on the other hand, it can also help extend the service life of the corrugated cardboard box and achieve environmental protection. In addition, the box can be folded and stored by means of multiple easy-folding seams, which is convenient for storage and transportation. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of this utility model;
[0016] Figure 2 This is a schematic diagram of the unfolded structure of the box body of this utility model;
[0017] Figure 3 This is a schematic diagram of the structure of the stop part of this utility model;
[0018] Figure 4This is a structural schematic diagram of the reinforcement and fastener of this utility model.
[0019] In the diagram: 1. Box body; 11. Side panel; 12. First folding joint; 13. Baffle; 2. Second folding joint; 3. Third folding joint; 4. Reinforcing structure; 41. Fastener; 42. Reinforcing component; 421. Arc-shaped elastic part; 422. Conical protrusion; 5. First stop part; 51. Extension part; 6. Second stop part; 61. Protrusion part; 7. Third stop part. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0021] Reference Figure 1-4 A foldable environmentally friendly corrugated cardboard box includes a box body 1, which is composed of four side panels 11. The four side panels 11 are fixedly connected end to end and are enclosed by a first easy-folding seam 12 to form the box body 1.
[0022] The top of the side panel 11 forms a baffle 13 through a second folding seam 2, and the bottom of the side panel 11 forms a stop portion through a third folding seam 3. The stop portions are connected by a reinforcing structure 4 to seal the bottom opening of the box body 1.
[0023] In some embodiments, the corrugated cardboard box is typically composed of four side panels 11. During the production process, an outer layer is also glued to both sides of the four side panels 11. The outer layer serves to provide waterproofing and reinforcement, and the outer layer also allows the side panels 11 to be folded together.
[0024] Specifically, the first easy-fold joint 12, the second easy-fold joint 2, and the third easy-fold joint 3 are all set on the outer layer mentioned above. The setting of easy-fold joints facilitates the mutual folding and stacking of the side plate 11, the baffle 13, and the four stops mentioned below, which helps to improve the stability of the box 1.
[0025] Furthermore, one pair of the baffles 13 on opposite sides is placed on top of the other pair of baffles 13 to cover the top opening of the housing 1.
[0026] Furthermore, the stop portion includes a first stop portion 5, a second stop portion 6, and a pair of third stop portions 7. The two sides of the free end of the first stop portion 5 extend outward to form an extension portion 51. The pair of third stop portions 7 are arranged opposite to each other and are both mounted on the top of the extension portion 51.
[0027] More specifically, the middle of the free end of the second stop 6 extends outward to form a protrusion 61, and the second stop 6 rests on the top of the pair of third stops 7 so that the protrusion 61 extends and abuts against the bottom of the first stop 5.
[0028] It should be added that the specific structure of the stop part is a common method for connecting and sealing the bottom of corrugated cardboard boxes in the prior art. The specific principle is that the four baffles are fixed by mutual abutment and support, as well as by the downward pressure of the weight inside the box. In this embodiment, the setting of the fastener 41 and the reinforcement 42 can reduce the instability of the baffles due to aging.
[0029] In general, the reinforcement structure 4 also includes a fastener 41 and a reinforcement member 42. The fastener 41 has a cylindrical structure and is fixedly connected to the free ends of the first stop portion 5 and the protrusion portion 61, respectively, along with the reinforcement member 42.
[0030] Finally, the reinforcement member 42 has a pair of arc-shaped elastic parts 421 on the side near the fixing member 41. The pair of arc-shaped elastic parts 421 are spaced apart, and each of them has a conical protrusion 422 at its top. The conical protrusion 422 passes through and engages with the fixing member 41.
[0031] It is worth mentioning that the second stop 6 is mounted on top of a pair of third stop 7, and the third stop 7 is mounted on top of the first stop 5. Because the protrusion 61 extends and abuts against the bottom of the first stop 5, the four stop parts support each other. Of course, the distance between the protrusion 61 and the two side extensions 51 is matched to prevent the extension from getting stuck.
[0032] Specifically, after the first stop 5 and the second stop 6 are connected and fixed by the fastener 41 and the reinforcement 42, a pair of third stops 7 are sandwiched between the first stop 5 and the second stop 6. The downward gravity of the object inside the box 1 is mainly applied to the first stop 5 and the second stop 6. Therefore, by improving the abutment stability between the first stop 5 and the second stop 6, the abutment instability caused by the aging of the stops can be effectively delayed.
[0033] Furthermore, the reinforcement 42 is preferably made of a material with deformation capabilities such as rubber or plastic. The conical protrusion 422 passes through the central through hole of the fixing member 41 through the abutment deformation. Then the protrusion 61 is engaged with the fixing member 41, so that the first stop 5 and the second stop 6 can be connected and fixed.
[0034] Similarly, by pressing down on a pair of arc-shaped elastic parts 421 to deform and shrink them inward, the reinforcement part 42 can be disengaged from the fixing part 41.
[0035] Working method: When not in use, the box 1 is folded through three easy-fold seams. When needed, the side panels 11, baffles 13 and four stops are unfolded through three easy-fold seams respectively.
[0036] First, the first stop 5 is bent, and then a pair of third stops 7 are placed on the first stop 5 by bending. Then, the second stop 6 is placed on the pair of third stops 7 by bending. After that, the protrusion 61 is extended and placed on the bottom of the first stop 5. The four stops support each other.
[0037] Then, the conical protrusion 422 passes through the central through hole of the fixing member 41 through the abutment deformation, so the protrusion 61 engages with the fixing member 41, connecting and fixing the first stop 5 and the second stop 6. At the same time, pressing a pair of arc-shaped elastic parts 421 causes them to deform and shrink inward, so that the reinforcement part 42 can be separated from the fixing member 41.
[0038] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A foldable environment-friendly corrugated carton, comprising a box body (1), the box body (1) is composed of four side plates (11), characterized in that: Four said side plates (11) are fixedly connected between the head and tail, and form the box (1) by the first easy-to-fold joint (12); Wherein, the top of the side plate (11) forms the baffle (13) through the second easy-to-fold joint (2), and the bottom thereof forms the stop portion through the third easy-to-fold joint (3), the stop portions are connected through the reinforcing structure (4) to block the bottom opening of the box (1).
2. The foldable environment-friendly corrugated carton according to claim 1, characterized in that: The pair of baffles (13) on the opposite side are arranged on the upper side of the other pair of baffles (13) to block the top opening of the box (1).
3. The foldable environment-friendly corrugated carton according to claim 1, characterized in that: The stop portion includes the first stop portion (5), the second stop portion (6) and the pair of third stop portions (7), the two sides of the free end of the first stop portion (5) extend outward to form the extension part (51), the pair of third stop portions (7) are oppositely arranged, and each is arranged on the top of the extension part (51).
4. The foldable environment-friendly corrugated carton according to claim 3, characterized in that: The middle part of the free end of the second stop portion (6) extends outward to form the protruding part (61), the second stop portion (6) is arranged on the top of the pair of third stop portions (7) to extend the protruding part (61) and abut against the bottom of the first stop portion (5).
5. The foldable environment-friendly corrugated carton according to claim 4, characterized in that: The reinforcing structure (4) includes the fixing part (41) and the reinforcing part (42), the fixing part (41) is in a cylindrical structure, and the free end of the fixing part (41) and the reinforcing part (42) are fixedly connected to the first stop portion (5) and the protruding part (61) respectively.
6. The foldable environment-friendly corrugated carton according to claim 5, characterized in that: The reinforcing part (42) is provided with a pair of arc-shaped elastic parts (421) near one side of the fixing part (41), the pair of arc-shaped elastic parts (421) are arranged at intervals, and each is provided with a tapered protrusion (422) on the top, and the tapered protrusion (422) penetrates and clamps the fixing part (41).
Citation Information
Patent Citations
A foldable cardboard box
CN218840072U