A recyclable carton

Abstract

The utility model provides a kind of recyclable carton, including lower carton body, upper carton body and elastic composite box, lower carton body, elastic composite box and upper carton body are combined connection from bottom to top, elastic composite box is combined by high tenacity kraft paper surface layer, grid thin silk layer and special wave shape elastic core paper layer, the design solves the original carton that can be recycled multiple times, cannot be adjusted in size according to different specifications of goods, idle waste is easily caused, and overall strength is general, practicality and universality need to be improved, the utility model uses adjustable carton structure, can be adjusted in height according to different specifications of goods, so that its practicality and universality are improved, in addition, each adjusting structure uses LFT-PP material, can improve the overall strength of carton, and good supporting effect is played to carton whole.

Description

Technical Field

[0001] This utility model is a reusable cardboard box, belonging to the field of cardboard box technology. Background Technology

[0002] With the development of technology and the rapid development of the logistics industry, the demand for packaging cartons is increasing. In order to ensure that the cartons are not damaged by external impacts during transportation and that the cartons can be recycled without causing environmental pollution, a high-strength recyclable carton has been designed.

[0003] Chinese Patent Publication No. CN215437337U proposes a reusable cardboard box. The device uses a first double-sided adhesive to attach a first sealing panel to a second sealing panel to seal the bottom of the box. Then, a second double-sided adhesive is used to fix a third sealing panel to a fourth sealing panel to seal the surface of the box. However, this reusable cardboard box cannot be adjusted in size according to different items, which easily leads to idle waste. Moreover, its overall strength is average, and its practicality and versatility need to be improved. There is an urgent need for a reusable cardboard box to solve the above-mentioned problems. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a reusable cardboard box to solve the problems mentioned in the background art. This utility model adopts an adjustable cardboard box structure, which can adjust the height according to different sizes of items, thereby improving its practicality and versatility. In addition, each adjustment structure is made of LFT-PP material, which can improve the overall strength of the cardboard box and provide good support for the overall cardboard box.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a recyclable cardboard box, comprising a lower cardboard box body, an upper cardboard box body, and an elastic composite box body. The lower cardboard box body, the elastic composite box body, and the upper cardboard box body are connected from bottom to top. The elastic composite box body is composed of a high-toughness kraft paper surface layer, a mesh-like thin yarn layer, and a special wavy elastic core paper layer. The high-toughness kraft paper surface layer, the mesh-like thin yarn layer, and the special wavy elastic core paper layer are bonded and fixed together from the outside to the inside using flexible EVA adhesive. The lower cardboard box body... The lower edge of the inner carton is glued with a lower reinforcing frame. A first internally threaded cylinder is longitudinally fixed at the left rear corner of the lower reinforcing frame. Lower hollow tubes are longitudinally fixed at the other corners around the lower reinforcing frame. The upper edge of the inner carton is glued with an upper reinforcing frame. A second internally threaded cylinder is longitudinally fixed at the left rear corner of the upper reinforcing frame. Upper hollow tubes are longitudinally fixed at the other corners around the upper reinforcing frame. A bidirectional screw is screwed into the first internally threaded cylinder. The upper end of the bidirectional screw is screwed into the second internally threaded cylinder.

[0006] Furthermore, carton cover plates are movably connected to both the left and right sides of the upper end of the upper carton body.

[0007] Furthermore, each of the lower hollow tubes has a sliding tube fixed through it, and the upper ends of the sliding tubes are slidably inserted into the upper hollow tubes respectively.

[0008] Furthermore, a screw block is fixed to the middle of the outside of the bidirectional screw.

[0009] Furthermore, the upper and lower threads of the bidirectional screw have opposite directions of rotation.

[0010] Furthermore, the lower reinforcing frame, the first internal threaded cylinder, the bidirectional screw, the second internal threaded cylinder, the multiple lower hollow tubes, the multiple upper hollow tubes, and the upper reinforcing frame are all made of LFT-PP material.

[0011] The beneficial effects of this utility model are as follows: This utility model provides a reusable cardboard box. Because it incorporates a lower reinforcing frame, a first internal threaded cylinder, a bidirectional screw, a screw block, a second internal threaded cylinder, an upper reinforcing frame, a high-toughness kraft paper surface layer, a mesh-like thin yarn layer, a special wavy elastic core paper layer, a lower hollow tube, a sliding tube, and an upper hollow tube, its structure is reasonable. The adjustable cardboard box structure allows for height adjustment according to different item sizes, improving its practicality and versatility. Furthermore, the use of LFT-PP material in each adjustment structure enhances the overall strength of the cardboard box, providing excellent support and enhancing its practicality. Attached Figure Description

[0012] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0013] Figure 1 This is a schematic diagram of the structure of a recyclable cardboard box according to the present invention;

[0014] Figure 2 This is a half-sectional view of a recyclable cardboard box according to the present invention.

[0015] Figure 3 This is a schematic diagram of the sliding tube connection structure of a recyclable cardboard box according to the present invention;

[0016] Figure 4 This is a partially enlarged schematic diagram of the special wavy elastic core paper layer of a recyclable cardboard box according to this utility model.

[0017] In the diagram: 1-Lower carton body, 2-Upper carton body, 3-Lower reinforcing frame, 4-First internal threaded cylinder, 5-Double-direction screw, 6-Tightening block, 7-Second internal threaded cylinder, 8-Upper reinforcing frame, 9-Carton cover, 10-Elastic composite carton body, 11-High-toughness kraft paper surface layer, 12-Grid-shaped thin yarn layer, 13-Special wavy elastic core paper layer, 14-Lower hollow tube, 15-Sliding tube, 16-Upper hollow tube. Detailed Implementation

[0018] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0019] Please see Figures 1-4 This utility model provides a technical solution: a recyclable cardboard box, including a lower cardboard box 1, an upper cardboard box 2, and an elastic composite box 10. The lower cardboard box 1, the elastic composite box 10, and the upper cardboard box 2 are connected from bottom to top. The elastic composite box 10 is composed of a high-toughness kraft paper surface layer 11, a mesh-like thin yarn layer 12, and a special wavy elastic core paper layer 13. The high-toughness kraft paper surface layer 11, the mesh-like thin yarn layer 12, and the special wavy elastic core paper layer 13 are bonded together from the outside to the inside using flexible EVA adhesive. A lower reinforcing frame 3 is glued to the lower edge of the lower cardboard box 1. A longitudinally fixed part is fixed at the left rear corner of the lower reinforcing frame 3. The first internal threaded cylinder 4, the lower reinforcing frame 3, and the remaining corners are all longitudinally fixed with lower hollow tubes 14. The upper edge of the upper carton body 2 is glued to the upper reinforcing frame 8. The left rear corner of the upper reinforcing frame 8 is longitudinally fixed with a second internal threaded cylinder 7. The remaining corners of the upper reinforcing frame 8 are all longitudinally fixed with upper hollow tubes 16. The first internal threaded cylinder 4 is screwed with a double-ended screw 5. The upper end of the double-ended screw 5 is screwed into the second internal threaded cylinder 7. This design solves the problem that the original reusable carton cannot be adjusted in size according to different specifications of items, which easily leads to idle waste. In addition, the overall strength is average, and the practicality and versatility need to be improved.

[0020] As the first embodiment of this utility model: A carton cover plate 9 is movably connected to both the left and right sides of the upper end of the upper carton body 2. The added 1, carton cover plate 9, and upper carton body 2 are all made of the same corrugated cardboard. Multiple lower hollow tubes 14 each have a sliding tube 15 fixedly inserted inside. The upper ends of the multiple sliding tubes 15 are slidably inserted into multiple upper hollow tubes 16. This arrangement of the upper ends of the multiple sliding tubes 15 into the multiple upper hollow tubes 16 improves the corner strength of the carton. A screw block 6 is fixed to the center of the outside of the bidirectional screw 5, allowing workers to manually screw the bidirectional screw 5. The upper and lower threads of the bidirectional screw 5 have opposite directions of rotation. Since the first internal threaded cylinder 4 and the second internal threaded cylinder 7 have the same direction of rotation, when the bidirectional screw 5 rotates, it can drive the first internal threaded cylinder 4 and the second internal threaded cylinder 7 to move in opposite directions. The lower reinforcing frame 3, the first internal threaded cylinder 4, the bidirectional screw 5, the second internal threaded cylinder 7, multiple lower hollow tubes 14, multiple upper hollow tubes 16, and the upper reinforcing frame 8 are all made of LFT-PP material. LFT-PP material has high specific stiffness, low density, is lightweight, and has good environmental performance.

[0021] As a second embodiment of this utility model: When the entire box needs to be raised for use, the screw block 6 is turned, which drives the bidirectional screw 5 to rotate. Because the upper and lower threads of the bidirectional screw 5 have opposite directions of rotation, while the threads of the first internal thread cylinder 4 and the second internal thread cylinder 7 have the same direction of rotation, the bidirectional screw 5 will move the first internal thread cylinder 4 and the second internal thread cylinder 7 out through the thread principle. According to the mutual force, the second internal thread cylinder 7 will be pushed upward, and the second internal thread cylinder 7 will push the upper reinforcing frame 8 upward, so that the upper carton 2 is driven to move upward, and the elastic composite box 10 unfolds upward. Multiple upper hollow tubes 16 slide upward outside multiple sliding tubes 15. The basis weight of the high-toughness kraft paper surface layer 11 is 80-120g / m³. 2 Made from sulfate wood pulp, with a tear strength ≥10N, the mesh-like thin yarn layer 12 combined with flexible EVA adhesive can enhance the interlayer bonding force and prevent delamination when the high-toughness kraft paper surface layer 11 or the special wavy elastic core paper layer 13 is folded. The special wavy elastic core paper layer 13 has a corrugation height of 2-3mm and a spacing of 5-8mm. It is made of high-elastic plant fiber or mixed with 5%-10% spandex fiber, and the elongation can reach 15%-20%. In addition, the special wavy elastic core paper layer 13 adopts a double-arch corrugation design, that is, each corrugation is composed of 2 continuous small arcs, similar to an "S" shape, rather than the traditional single arc. The spacing between the corrugation apexes is 8-10mm, which can disperse the stress concentration during folding.

[0022] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0023] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A recyclable cardboard box, comprising a lower cardboard box body (1), an upper cardboard box body (2), and a flexible composite box body (10), characterized in that: The lower cardboard box (1), the elastic composite box (10), and the upper cardboard box (2) are connected from bottom to top. The elastic composite box (10) is composed of a high-toughness kraft paper surface layer (11), a mesh-like thin yarn layer (12), and a special wavy elastic core paper layer (13). The high-toughness kraft paper surface layer (11), the mesh-like thin yarn layer (12), and the special wavy elastic core paper layer (13) are bonded together from the outside to the inside using flexible EVA adhesive. The lower edge of the lower cardboard box (1) is glued with a lower reinforcing frame (3). The lower reinforcing frame (3) is bent at the left rear side. A first internal threaded cylinder (4) is longitudinally fixed at the corner. Lower hollow tubes (14) are longitudinally fixed at the remaining corners of the lower reinforcing frame (3). An upper reinforcing frame (8) is glued to the upper edge of the upper carton body (2). A second internal threaded cylinder (7) is longitudinally fixed at the left rear corner of the upper reinforcing frame (8). Upper hollow tubes (16) are longitudinally fixed at the remaining corners of the upper reinforcing frame (8). A bidirectional screw (5) is screwed into the first internal threaded cylinder (4) through a thread. The upper end of the bidirectional screw (5) is screwed into the second internal threaded cylinder (7) through a thread.

2. The recyclable cardboard box according to claim 1, characterized in that: The upper cardboard box (2) is movably connected to the left and right sides of the upper end of the box.

3. A reusable cardboard box according to claim 1, characterized in that: Each of the lower hollow tubes (14) has a sliding tube (15) fixed inside it, and the upper ends of the sliding tubes (15) are respectively slidably inserted into the upper hollow tubes (16).

4. A reusable cardboard box according to claim 1, characterized in that: The bidirectional screw (5) has a screw block (6) fixed in the middle of its outer side.

5. A reusable cardboard box according to claim 1, characterized in that: The upper and lower threads of the bidirectional screw (5) have opposite directions of rotation.

6. A recyclable cardboard box according to claim 1, characterized in that: The lower reinforcing frame (3), the first internal threaded cylinder (4), the bidirectional screw (5), the second internal threaded cylinder (7), the multiple lower hollow tubes (14), the multiple upper hollow tubes (16), and the upper reinforcing frame (8) are all made of LFT-PP material.

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