Multi-layer composite packaging box based on environment-friendly paper

Abstract

The utility model relates to the field of packaging box industry, in particular to a multi-layer composite packaging box based on environment-friendly paper materials. The technical problems that a conventional packaging box is usually of a single-layer structure and is difficult to bear high-strength collision, meanwhile, an internal anti-collision structure of the conventional packaging box is difficult to disassemble and assemble quickly, the sealing mode of the packaging box is not convenient enough, and the environmental protection property of the packaging box is insufficient are solved. According to the technical scheme, the multi-layer composite packaging box based on the environment-friendly paper comprises an outer box assembly, a supporting assembly, a buffering assembly and an inner box assembly. The supporting assembly is arranged in the outer box assembly facilitating rapid sealing, the supporting assembly is of a structure easy to disassemble and assemble, the overall structure can be more stable, the buffering assembly is arranged in the outer box assembly, the inner box assembly arranged in the buffering assembly can be protected, and the service life of the inner box assembly is prolonged. Meanwhile, the packaging box is made of environment-friendly materials, consumption of natural resources and pollution to the environment can be reduced, and the problems are solved.

Description

Technical Field

[0001] The utility model belongs to the field of the packing box industry, and particularly relates to a multi-layer composite packing box based on environment-friendly paper materials. Background Art

[0002] In the packing box industry, the packing box industry is an industry closely related to various manufacturing industries. It mainly provides packaging, transportation and protection functions for products. In recent years, environmental protection and sustainable development have become important trends in the packing box industry. More and more enterprises have begun to pay attention to the environmental protection performance of packing boxes, promoting measures such as using environment-friendly paper materials and reducing the generation of packaging waste. In the prior art, conventional packing boxes are often of single-layer structure, which is difficult to withstand the high-intensity collisions that may occur during handling, resulting in damage to the packaged items inside the packing box. At the same time, the anti-collision structure inside the conventional packing box is difficult to disassemble and assemble quickly, and the sealing of the conventional packing box often uses tape to seal the connection of the packing box, and the sealing method of the packing box is not convenient enough, and the environmental protection of the packing box is insufficient. Content of the Utility Model

[0003] In order to overcome the problems that in the packaging and transportation processes of packing boxes, conventional packing boxes are often of single-layer structure and difficult to withstand high-intensity collisions, at the same time, it is difficult to quickly disassemble and assemble the internal anti-collision structure of conventional packing boxes, the sealing method of packing boxes is not convenient enough, and the environmental protection of packing boxes is insufficient.

[0004] The technical solution of the utility model is as follows: a multi-layer composite packing box based on environment-friendly paper materials, which includes an outer box assembly, a support assembly, a buffer assembly and an inner box assembly; a support assembly for support is arranged inside the outer box assembly; a buffer assembly for buffering is arranged inside the outer box assembly; an inner box assembly for storage is arranged inside the buffer assembly.

[0005] Preferably, the outer box assembly is provided with a Velcro structure for quick sealing, which solves the problem that the sealing method of the packing box is not convenient and environmentally friendly. The inner part of the outer box assembly is provided with a support assembly, which provides certain support for the outer box assembly, making the structure of the outer box assembly more stable. At the same time, the support assembly is an easily disassembled and assembled structure, which can be quickly installed inside the outer box assembly. When the support assembly is damaged, the corresponding components can also be quickly replaced, solving the problem that it is difficult to quickly disassemble and assemble the internal anti-collision structure of the conventional packing box. The inner part of the outer box assembly is provided with a buffer assembly, which can play a buffering and protecting role for the inner box assembly arranged inside the buffer assembly, preventing external forces from damaging the items stored inside the inner box assembly. The design of the multi-layer composite structure of the packing box solves the problem that the conventional packing box is often a single-layer structure and is difficult to withstand high-intensity collisions. Through the setting of the inner box assembly, the items can be stored in two independent chambers. At the same time, the materials of the outer box assembly, the support assembly, the buffer assembly and the inner box assembly are all environmentally friendly materials, and these materials have a low environmental impact, which can reduce the consumption of natural resources and environmental pollution.

[0006] As a preference, the outer box assembly includes a first corrugated box body, side covers, an upper cover, a closing cover, Velcro hooks, a Velcro fleece surface and handles; the left and right sides of the upper end of the first corrugated box body are hinged with side covers that are centrosymmetric about the center of the first corrugated box body; handles are fixedly connected to the left and right ends of the first corrugated box body; the upper rear edge of the first corrugated box body is hinged with an upper cover; the upper end of the upper cover is hinged with a closing cover; Velcro hooks evenly distributed about the center of the upper cover are fixedly connected to the front end of the closing cover; a Velcro fleece surface is fixedly connected to the upper part of the front end of the first corrugated box body; the materials of the first corrugated box body, the side covers, the upper cover and the closing cover are all recycled paper; the Velcro hooks and the Velcro fleece surface are components of the Velcro, which can be adhered to each other to form a repeatedly openable and closable connection, having a strong adhesive force, avoiding the use of tape for sealing the box, and conforming to the concept of green environmental protection. The first corrugated box body, the side covers, the upper cover and the closing cover are corrugated cardboard made of recycled paper, having high mechanical strength while using environmentally friendly paper materials, and being able to withstand collisions and drops during handling.

[0007] Preferably, the support assembly includes support blocks, a first connecting rod, a second connecting rod, a third connecting rod, a first groove body, and a first fixing column; four support blocks are movably arranged at the bottom corners of the inner wall at the lower end of the first corrugated box body; the support blocks are blocks with an L-shaped view in all three views; a first connecting rod is movably arranged between two support blocks located in the front and back of the center of the first corrugated box body; a third connecting rod is movably arranged between two support blocks located on the left and right of the center of the first corrugated box body; the four support blocks, the two first connecting rods, and the two third connecting rods are connected to form a frame structure; four second connecting rods are movably arranged at the upper ends of the four support blocks; the upper ends of the second connecting rods are provided with the same frame structure that is axially symmetrically distributed about the center of the second connecting rod; through the setting of the internal cuboid frame of the first corrugated box body, a certain support is given to the external carton, and it is not easy to be dented or deformed due to collisions during handling compared with a conventional single-layer corrugated carton.

[0008] Preferably, first fixing columns are fixedly connected to the left and right ends of the first connecting rod; second fixing columns are fixedly connected to the upper and lower ends of the second connecting rod; third fixing columns are fixedly connected to the front and back ends of the third connecting rod; a second groove body is formed at one end of the support block close to the first connecting rod; a first groove body is formed at one end of the support block close to the third connecting rod; the first groove body is adapted to the third fixing column; the second groove body is adapted to the first fixing column; the materials of the support block, the first connecting rod, the second connecting rod, and the third connecting rod are all flexible ABS plastics; the materials of the support block, the first connecting rod, the second connecting rod, and the third connecting rod are all flexible ABS plastics, which have a certain softness and good impact resistance, and can be bent to a certain extent for the disassembly and assembly of the cuboid frame structure. The support block serves as a connection fulcrum, and the first connecting rod, the second connecting rod, and the second connecting rod provide support in three different directions to make the entire cuboid frame structure stable.

[0009] Preferably, the buffer assembly includes a first air column bag; the first air column bag is adhesively arranged on the inner walls at the front and back ends of the first corrugated box body; the second air column bag is adhesively arranged on the inner walls at the left and right ends of the first corrugated box body; the upper and lower ends of the first air column bag are in contact with one end of the two first connecting rods close to each other; the upper and lower ends of the second air column bag are in contact with one end of the two third connecting rods close to each other; the first air column bag and the second air column bag are both air column bags, which are a kind of packaging material made of environmentally friendly plastic film, filled with gas inside to form air columns, and have the functions of buffering, earthquake resistance, and anti-extrusion. When damaged, only the damaged single air column part fails, and the other air columns are completely unaffected and still maintain the protection effect, which can provide protection for the internal packaged items during handling or long-distance transportation.

[0010] Preferably, the inner box assembly includes a second corrugated box, a third slot, a third corrugated box, a connecting block, a fourth slot, a slider, a limit block and a crossbar; the second corrugated box is movably provided on the inner wall of the lower end of the first corrugated box; the third slot is penetrated at both ends of the second corrugated box; the third corrugated box is movably provided at the upper end of the second corrugated box; the fifth slot is penetrated at both ends of the third corrugated box; the second and third corrugated boxes are made of recycled paper; the second and third corrugated boxes are made of corrugated paperboard made of recycled paper, which, as the last layer of protection for this packaging box, can greatly avoid damage to the items in the packaging box due to collisions during handling or long-distance transportation.

[0011] Preferably, a slider is movably provided on the inner wall of the third slot body; the ends of the two sliders that are close to each other are fixedly connected to a limiting block; the ends of the two limiting blocks that are away from each other fit with the left and right inner walls of the second corrugated box body; the ends of the two sliders that are away from each other are fixedly connected to a connecting block; a fourth slot body is penetrated through the upper left end of the connecting block; the fourth slot body corresponds to the fifth slot body one by one; a cross bar is movably provided on the inner walls of the fourth slot body and the fifth slot body; the cross bar is passed through the fourth slot body and the fifth slot body, so that the cross bar, the third corrugated box body and the connecting block form a whole, and the third corrugated box body can be lifted by lifting the cross bar, and at the same time, the slider fixed at the lower end of the connecting block will slide upward in the third slot body until the slider fits with the upper inner wall of the third slot body, driving the second corrugated box body to be lifted accordingly, and the second corrugated box body and the third corrugated box body can be lifted out of the first corrugated box body through the cross bar, which is convenient for taking and placing items, and at the same time, it is convenient to classify and store items, which solves the problem that it is difficult to classify and store internal items in conventional packaging boxes.

[0012] Beneficial effects of the utility model:

[0013] 1. Through the multi-layer composite design based on environmentally friendly paper materials, the outer layer is wrapped with recycled paper corrugated cardboard, and the inner layer is supported by a flexible plastic frame to ensure that the external structure has strong strength. The middle layer is provided with air column bags for cushioning, and the inner layer of corrugated paper boxes is wrapped to withstand collisions and falls during transportation, and to provide protection for the internal items. This solves the problem that conventional packaging boxes are often single-layer designs and are difficult to withstand high-intensity collisions, resulting in damage to the internal packaging items;

[0014] 2. Second fixing columns are fixedly connected to the upper and lower ends of the second connecting rod; third fixing columns are fixedly connected to the front and rear ends of the third connecting rod; a second groove is formed at one end of the support block close to the first connecting rod; a first groove is formed at one end of the support block close to the third connecting rod; the first groove is adapted to the third fixing column; the second groove is adapted to the first fixing column; the support block, the first connecting rod, the second connecting rod, and the third connecting rod are all made of flexible ABS plastic; the flexible ABS plastic has a certain degree of softness and good impact resistance, which can make it bend to a certain extent for the disassembly and assembly of the cuboid frame structure. The support block serves as a connection fulcrum, and the first connecting rod, the second connecting rod, and the second connecting rod provide support in three different directions to make the entire cuboid frame structure stable;

[0015] 3. Through the setting of the magic tape hook and the magic tape fleece, the two are components of the magic tape and can be glued to each other to form a connection that can be repeatedly opened and closed, with strong adhesion, avoiding the use of tape for sealing the box, which is both convenient and in line with the concept of green environmental protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Fig. shows a three-dimensional structural schematic diagram of a multi-layer composite packaging box based on environmentally friendly paper materials of the present invention;

[0017] Figure 2 Fig. shows a sectional three-dimensional structural schematic diagram of a multi-layer composite packaging box based on environmentally friendly paper materials of the present invention;

[0018] Figure 3 Fig. shows a three-dimensional structural schematic diagram of the outer box assembly of a multi-layer composite packaging box based on environmentally friendly paper materials of the present invention;

[0019] Figure 4 Fig. shows a three-dimensional structural schematic diagram of the support assembly of a multi-layer composite packaging box based on environmentally friendly paper materials of the present invention;

[0020] Figure 5 Fig. shows a multi-layer composite packaging box based on environmentally friendly paper materials of the present invention Figure 4 partial enlarged three-dimensional structural schematic diagram at position A of the middle support assembly;

[0021] Figure 6 Fig. shows a three-dimensional structural schematic diagram of the buffer assembly of a multi-layer composite packaging box based on environmentally friendly paper materials of the present invention;

[0022] Figure 7 Fig. shows a three-dimensional structural schematic diagram of the inner box assembly of a multi-layer composite packaging box based on environmentally friendly paper materials of the present invention.

[0023] The reference numerals in the drawings are as follows: 1 - outer box assembly, 101 - first corrugated box body, 102 - side cover, 103 - upper cover, 104 - closing cover, 105 - hook-and-loop fastener hook, 106 - hook-and-loop fastener pile, 107 - handle, 2 - support assembly, 201 - support block, 202 - first connecting rod, 203 - second connecting rod, 204 - third connecting rod, 205 - first groove, 206 - first fixing post, 207 - second fixing post, 208 - third fixing post, 209 - second groove, 3 - buffer assembly, 301 - first air column bag, 302 - second air column bag, 4 - inner box assembly, 401 - second corrugated box body, 402 - third groove, 403 - third corrugated box body, 404 - connecting block, 405 - fourth groove, 406 - slider, 407 - limiting block, 408 - cross bar, 409 - fifth groove. Detailed implementation manners

[0024] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0025] Please refer to Figure 1 and Figure 2 As shown in the drawings and embodiments, the present utility model provides an embodiment: a multi-layer composite packaging box based on environmentally friendly paper materials, including an outer box assembly 1, a support assembly 2, a buffer assembly 3, and an inner box assembly 4; a support assembly 2 for support is arranged inside the outer box assembly 1; a buffer assembly 3 for buffering is arranged inside the outer box assembly 1; and an inner box assembly 4 for storage is arranged inside the buffer assembly 3.

[0026] Please refer to Figure 3 As shown in the drawings, in this embodiment, the outer box assembly 1 includes a first corrugated box body 101, a side cover 102, an upper cover 103, a closing cover 104, a hook-and-loop fastener hook 105, a hook-and-loop fastener pile 106, and a handle 107; side covers 102 that are centrosymmetric about the center of the first corrugated box body 101 are hinged to the upper left and right side edges of the upper end of the first corrugated box body 101; handles 107 are fixedly connected to the left and right ends of the first corrugated box body 101; an upper cover 103 is hinged to the upper rear side edge of the upper end of the first corrugated box body 101; a closing cover 104 is hinged to the upper end of the upper cover 103; hook-and-loop fastener hooks 105 that are evenly distributed about the center of the upper cover 103 are fixedly connected to the front end of the closing cover 104; a hook-and-loop fastener pile 106 is fixedly connected to the upper part of the front end of the first corrugated box body 101; and the first corrugated box body 101, the side cover 102, the upper cover 103, and the closing cover 104 are all made of recycled paper.

[0027] Please refer to Figure 4 and Figure 5, in this embodiment, the support assembly 2 includes support blocks 201, first connecting rods 202, second connecting rods 203, third connecting rods 204, first grooves 205 and first fixing columns 206; four support blocks 201 are movably arranged at the bottom corners of the inner wall of the lower end of the first corrugated box body 101; the support blocks 201 are blocks with an L-shaped three-view; a first connecting rod 202 is movably arranged between two support blocks 201 located in the front and rear of the center of the first corrugated box body 101; a third connecting rod 204 is movably arranged between two support blocks 201 located on the left and right of the center of the first corrugated box body 101; the four support blocks 201, two first connecting rods 202 and two third connecting rods 204 are connected to form a frame structure; four second connecting rods 203 are movably arranged at the upper ends of the four support blocks 201; a same frame structure symmetrically distributed about the center of the second connecting rod is arranged at the upper end of the second connecting rod; the left and right ends of the first connecting rod 202 are fixedly connected with first fixing columns 206; the upper and lower ends of the second connecting rod 203 are fixedly connected with second fixing columns 207; the front and rear ends of the third connecting rod 204 are fixedly connected with third fixing columns 208; a second groove 209 is formed at one end of the support block 201 close to the first connecting rod 202; a first groove 205 is formed at one end of the support block 201 close to the third connecting rod 204; the first groove 205 is adapted to the third fixing column 208; the second groove 209 is adapted to the first fixing column 206; the materials of the support block 201, the first connecting rod 202, the second connecting rod 203 and the third connecting rod 204 are all flexible ABS plastics.

[0028] Please refer to Figure 6 , in this embodiment, the buffer assembly 3 includes a first air column bag 301; the first air column bag 301 is adhesively arranged on the inner walls of the front and rear ends of the first corrugated box body 101; a second air column bag 302 is adhesively arranged on the inner walls of the left and right ends of the first corrugated box body 101; the upper and lower ends of the first air column bag 301 are attached to one end of the two first connecting rods 202 close to each other; the upper and lower ends of the second air column bag 302 are attached to one end of the two third connecting rods 204 close to each other.

[0029] Please refer to Figure 7, in this embodiment, the inner box assembly 4 includes a second corrugated box body 401, a third groove body 402, a third corrugated box body 403, a connecting block 404, a fourth groove body 405, a slider 406, a limiting block 407 and a cross bar 408; the lower inner wall of the first corrugated box body 101 is movably provided with the second corrugated box body 401; the left and right ends of the second corrugated box body 401 are penetrated and provided with the third groove body 402; the upper end of the second corrugated box body 401 is movably provided with the third corrugated box body 403; the left and right ends of the third corrugated box body 403 are penetrated and provided with a fifth groove body 409; the materials of the second corrugated box body 401 and the third corrugated box body 403 are both recycled paper; the inner wall of the third groove body 402 is movably provided with the slider 406; one ends of the two sliders 406 close to each other are fixedly connected with the limiting block 407; one ends of the two limiting blocks 407 away from each other are attached to the left and right inner walls of the second corrugated box body 401; one ends of the two sliders 406 away from each other are fixedly connected with the connecting block 404; the upper part of the left end of the connecting block 404 is penetrated and provided with the fourth groove body 405; the fourth groove body 405 corresponds to the fifth groove body 409 one by one; the inner walls of the fourth groove body 405 and the fifth groove body 409 are movably provided with the cross bar 408.

[0030] When in use, first classify the items to be packaged and transported according to requirements and place them into the second corrugated box body 401 and the third groove body 402, then adjust the angle of the connecting block 404 to make the fourth groove body 405 and the fifth groove body 409 correspond to each other one by one, pass the cross bar 408 through the fourth groove body 405 and the fifth groove body 409, by lifting the cross bar 408, the third corrugated box body 403 will be driven to lift synchronously, and at the same time the slider 406 slides in the third groove body 402 until it is attached to the upper inner wall of the third groove body 402, driving the second corrugated box body 401 to lift simultaneously;

[0031] Then, hold the cross bar 408 and slowly put the second corrugated box body 401 and the third corrugated box body 403 into the first corrugated box body 101 until the lower end of the second corrugated box body 401 is attached to the upper end of the first corrugated box body 101, and the lower end of the third corrugated box body 403 is attached to the upper end of the second corrugated box body 401. Since the first air column bag 301 and the second air column bag 302 are inflatable structures and have a certain elasticity, the first air column bag 301 and the second air column bag 302 wrap the outer wall of the second corrugated box body 401, preventing the items stored inside the second corrugated box body 401 and the third corrugated box body 403 from being damaged by external impacts;

[0032] Then, fold the side cover 102 inward and cover it above the third corrugated box body 403, then fold the upper cover 103 forward and cover it above the side cover 102, and finally fold the magic tape hook 105 downward so that the magic tape hook 105 is tightly adhered to the magic tape fleece 106 to realize the sealing of the first corrugated box body 101.

[0033] Through the above steps, by providing a Velcro structure on the outer box component 1 that facilitates quick sealing, the problem of the inconvenient and non-environmental protection sealing method of the packing box is solved. By providing a support component 2 inside the outer box component 1, certain support is provided to the outer box component 1, making the structure of the outer box component 1 more stable. At the same time, the support component is an easily disassembled and assembled structure and can be quickly installed inside the outer box component 1. When the support component 2 is damaged, the corresponding component can also be quickly replaced, solving the problem that it is difficult to achieve the quick disassembly and assembly of the internal anti-collision structure of a conventional packing box. By providing a buffer component 3 inside the outer box component 1, it can play a buffering and protecting role for the inner box component 4 provided inside the buffer component 3, preventing external forces from damaging the items stored inside the inner box component 4. The design of the multi-layer composite structure of the packing box solves the problem that conventional packing boxes are often single-layer structures and are difficult to withstand high-intensity collisions. By providing the inner box component 4, items can be stored in two independent chambers, solving the problem that it is difficult for conventional packing boxes to achieve the classified storage of items inside them. At the same time, the materials of the outer box component 1, the support component 2, the buffer component 3, and the inner box component 4 are all environmentally friendly materials, and these materials have a low environmental impact and can reduce the consumption of natural resources and environmental pollution.

[0034] The above has described in detail the embodiments of the present invention in conjunction with the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the gist of the present invention.

Claims

1. A multi-layer composite packaging box based on environmentally friendly paper material, comprising an outer box component (1); characterized in that: The invention also comprises a support component (2), a buffer component (3) and an inner box component (4); the outer box component (1) is provided with a support component (2) for supporting; the outer box component (1) is provided with a buffer component (3) for buffering; the buffer component (3) is provided with an inner box component (4) for storing; the outer box component (1) comprises a first corrugated box body (101), a side cover (102), an upper cover (103), a closing cover (104), a Velcro hook (105), a Velcro velvet surface (106) and a handle (107). ); Side covers (102) symmetrically about the center of the first corrugated box (101) are hingedly connected at the left and right edges of the upper end of the first corrugated box (101); handles (107) are fixedly connected to the left and right ends of the first corrugated box (101); an upper cover (103) is hingedly connected at the rear edge of the upper end of the first corrugated box (101); a closing cover (104) is hingedly connected to the upper end of the upper cover (103); Velcro hooks (105) evenly distributed about the center of the upper cover (103) are fixedly connected to the front end of the closing cover (104); the first corrugated box (10 1) is fixedly connected to a Velcro velvet surface (106) at the upper front end; the first corrugated box body (101), the side cover (102), the upper cover (103) and the closing cover (104) are all made of recycled paper; the support assembly (2) comprises a support block (201), a first connecting rod (202), a second connecting rod (203), a third connecting rod (204), a first slot body (205) and a first fixing column (206); four support blocks (201) are movably arranged at the bottom corners of the inner wall at the lower end of the first corrugated box body (101); the support blocks (201) are 1) is a block that is L-shaped in three views; the buffer component (3) comprises a first air column bag (301); the first air column bags (301) are attached to the inner walls of the front and rear ends of the first corrugated box (101); the second air column bags (302) are attached to the inner walls of the left and right ends of the first corrugated box (101); the upper and lower ends of the first air column bag (301) are in contact with one end of two first connecting rods (202) that are close to each other; the upper and lower ends of the second air column bag (302) are in contact with one end of two third connecting rods (204) that are close to each other.

2. The multi-layer composite packaging box based on environmentally friendly paper material according to claim 1, characterized in that: A first connecting rod (202) is movably arranged between two support blocks (201) located at the front and rear of the center of the first corrugated box (101); a third connecting rod (204) is movably arranged between two support blocks (201) located at the left and right of the center of the first corrugated box (101); four support blocks (201), two first connecting rods (202) and two third connecting rods (204) are connected to form a frame structure; four second connecting rods (203) are movably arranged at the upper ends of the four support blocks (201); and the upper ends of the second connecting rods (203) are provided with the same frame structure symmetrically distributed about the center of the second connecting rod (203).

3. The multi-layer composite packaging box based on environmentally friendly paper material according to claim 2, characterized in that: The left and right ends of the first connecting rod (202) are fixedly connected to the first fixing column (206); the upper and lower ends of the second connecting rod (203) are fixedly connected to the second fixing column (207); the front and rear ends of the third connecting rod (204) are fixedly connected to the third fixing column (208); a second slot (209) is provided at one end of the support block (201) and the first connecting rod (202) that are close to each other; a first slot (205) is provided at one end of the support block (201) and the third connecting rod (204) that are close to each other; the first slot (205) is matched with the third fixing column (208); the second slot (209) is matched with the first fixing column (206); the support block (201), the first connecting rod (202), the second connecting rod (203) and the third connecting rod (204) are all made of flexible ABS plastic.

4. The multi-layer composite packaging box based on environmentally friendly paper material according to claim 2, characterized in that: The inner box assembly (4) comprises a second corrugated box body (401), a third slot body (402), a third corrugated box body (403), a connecting block (404), a fourth slot body (405), a slider (406), a limit block (407) and a cross bar (408); the second corrugated box body (401) is movably arranged on the inner wall of the lower end of the first corrugated box body (101); the third slot body (402) is penetrated through the left and right ends of the second corrugated box body (401); the third corrugated box body (403) is movably arranged on the upper end of the second corrugated box body (401); the fifth slot body (409) is penetrated through the left and right ends of the third corrugated box body (403); the second corrugated box body (401) and the third corrugated box body (403) are both made of recycled paper.

5. The multi-layer composite packaging box based on environmentally friendly paper material according to claim 4, characterized in that: The inner wall of the third trough body (402) is movably provided with a slider (406); the ends of the two sliders (406) that are close to each other are fixedly connected to a limiting block (407); the ends of the two limiting blocks (407) that are away from each other are in contact with the left and right inner walls of the second corrugated box body (401); the ends of the two sliders (406) that are away from each other are fixedly connected to a connecting block (404); the upper part of the left end of the connecting block (404) is penetrated by a fourth trough body (405); the fourth trough body (405) corresponds to the fifth trough body (409) in one-to-one correspondence; and the inner walls of the fourth trough body (405) and the fifth trough body (409) are movably provided with a cross bar (408).

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