A paper-based document box instead of plastic

Abstract

This invention relates to the field of document box technology, and more particularly to a paper-based document box that replaces plastic, comprising a document frame and an inner document box. The document frame is a box-shaped structure with an opening at one end. The inner document box is disposed inside the document frame and is connected to the document frame via a magnetic structure. This invention consists of a document frame and an inner document box, connected by a magnetic structure for easy retrieval. When dealing with important documents, the inner document box containing that document can be removed and magnetically attached to the top of the document frame, distinguishing it from other inner document boxes. The inner document box includes a first inner box and a second inner box. The second inner box has symmetrical grooves spaced apart, allowing users to easily retrieve both types of inner boxes. Both the document frame and the inner document box are made of paper-based material, unlike traditional plastic document boxes, thus reducing environmental pollution.

Description

Technical Field

[0001] This invention relates to the field of document box technology, and more particularly to a paper-based document box instead of plastic. Background Technology

[0002] With increasing environmental awareness and growing global concern over plastic pollution, the use of traditional plastic document boxes faces numerous challenges. In response, a range of alternative solutions have emerged on the market, aiming to reduce environmental impact and improve safety and efficiency.

[0003] For example, a paper-based document box (publication number: CN210436856U, publication date: 2020-05-01) includes a first paper box with an opening on one side. A paper box lid is hinged to the first paper box. A support plate is fixedly installed on the inner wall of the first paper box. Two partitions are fixedly installed on the top of the support plate, and the tops of the two partitions are fixedly connected to the top inner wall of the first paper box. A baffle is fixedly installed on the bottom inner wall of the first paper box. A second paper box is fixedly installed on one outer wall of the first paper box, and the top of the second paper box is open. Two female Velcro straps are fixedly installed on one side of the paper box lid, and two female Velcro straps are fixedly installed on one outer wall of the first paper box, with the two female Velcro straps respectively adapted to the two female Velcro straps.

[0004] This file box is highly practical, providing excellent document storage and effectively reducing environmental pollution while also offering good fire resistance. However, the categories within the box are not clearly defined, and the storage space varies considerably, making it difficult to clearly categorize large quantities of documents. Furthermore, accessing the file box requires opening the lid, which is inconvenient. Summary of the Invention

[0005] To address the technical deficiencies in the prior art, this invention proposes a paper-based document box that replaces plastic, solving the aforementioned technical problems and meeting practical needs. The specific technical solution is as follows: A paper-based file box replaces plastic, comprising a file frame box and an inner file box. The file frame box is a box-shaped structure with an opening at one end. The inner file box is disposed inside the file frame box and is connected to the file frame box via a magnetic structure. The top and sides of the inner file box are respectively provided with metal sheets. The inner wall of the top of the file frame box is provided with a first magnet. The bottom of the side wall of the file frame box away from the opening is provided with a protrusion, and the outer surface of the protrusion is provided with a second magnet. The document frame box and the document inner box are respectively made of plastic-substitute paper material. The document frame box includes a wear-resistant layer, a first paper base layer and a first heat-sealing layer from the outside to the inside. The document inner box includes a second heat-sealing layer, a second paper base layer and a moisture-proof layer from the outside to the inside. The height difference between the internal height of the document frame box and the height of the document inner box is greater than the height of the protrusion. The document inner box includes a first inner box and a second inner box, which are spaced apart inside the document frame box. The second inner box has symmetrically distributed grooves at one end near the opening of the document frame box, and the edge of the opening of the document frame box has a notch.

[0006] As a further technical solution of the present invention, the file box is composed of a top plate, a bottom plate, an adsorption side plate, and two opposing and spaced support plates. The adsorption side plate is located between the two support plates, and the ends of the two support plates away from the adsorption side plate form an opening with the top plate and the bottom plate. The first magnet is located on the inner wall of the top plate, and the protrusion and the second magnet are located at the bottom end of the inner wall of the adsorption side plate. The notch is located on the two support plates near the opening.

[0007] As a further technical solution of the present invention, the top plate, bottom plate, adsorption side plate and support plate are compositely connected by their respective first heat-sealing layers, and the first magnet and the protrusion are respectively fixed in the file frame box by the first heat-sealing layer of the file frame box.

[0008] As a further technical solution of the present invention, the metal sheet includes a first metal sheet and a second metal sheet. The first metal sheet is disposed at the top of the inner document box, and the second metal sheet is disposed at the bottom end of the inner document box away from the opening. The height of the second metal sheet matches the height of the second magnet. The inner document box and the document frame are magnetically connected by the first metal sheet and the first magnet or by the second metal sheet and the second magnet.

[0009] As a further technical solution of the present invention, the document box includes a box body and a box door. One end of the box door is connected to the box body by a hinge, and the other end is connected to the box body by a magnetic structure. The box door is located below the first metal sheet. The box body is fixed to the first metal sheet and the second metal sheet by a second heat-sealing layer. A label is provided on the end of the box body away from the protrusion.

[0010] As a further technical solution of the present invention, the notch is provided with two sets including a first notch and a second notch. The first notch is provided on the support plate at a position flush with the height of the second inner box groove, and the second notch is provided on the support plate at a position flush with the height of the protrusion.

[0011] As a further technical solution of the present invention, the groove of the second inner box is provided near the first metal sheet of the second inner box, and the groove is formed by external force extrusion of the plastic substitute paper material.

[0012] As a further technical solution of the present invention, at least three first magnets are provided, and the three first magnets are evenly distributed along the adsorption side plate toward the opening direction.

[0013] The beneficial effects of this invention are as follows: This invention consists of a file frame box and a file inner box, which are connected by a magnetic structure for easy retrieval. When encountering a more important document, the file inner box containing the document can be removed and attached to the top of the file frame box to distinguish it from other file inner boxes. The file inner box includes a first inner box and a second inner box. The second inner box has symmetrical grooves, which are spaced apart, allowing the user to easily retrieve both types of inner boxes.

[0014] The document frame and inner document box of this invention are made of a plastic-substitute paper material, which, unlike traditional plastic document boxes, reduces environmental pollution. The document frame includes, from the outside in, a wear-resistant layer, a first paper base layer, and a first heat-sealing layer, making it more wear-resistant and better protecting the inner document box. The inner document box includes, from the outside in, a second heat-sealing layer, a second paper base layer, and a moisture-proof layer, providing a moisture-proof effect and preventing the stored documents from being corroded by moisture. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a paper-based document box instead of a plastic one.

[0016] Figure 2 This is a structural diagram of another way of using paper instead of plastic document boxes.

[0017] Figure 3 This is a schematic diagram of the internal structure of a paper-based document box instead of plastic.

[0018] Figure 4 This is a schematic diagram of the internal structure of a paper-based file box instead of a plastic file box.

[0019] Figure 5 This is a schematic diagram of the inner box structure of a paper-based document box instead of a plastic one.

[0020] Figure 6 This is a structural diagram of the inner box of a paper-based file box in its open state.

[0021] The components include: document box 1, first magnet 12, protrusion 13, second magnet 14, notch 15, inner document box 2, first inner box 21, second inner box 22, groove 23, first metal sheet 24, second metal sheet 25, box body 26, box door 27, label 28, top plate 31, bottom plate 32, adsorption side plate 33, and support plate 34. Detailed Implementation

[0022] The following is in conjunction with the appendix Figures 1-6The embodiments of the present invention will be described in conjunction with related examples. The embodiments of the present invention are not limited to the following examples, and the relevant necessary components of the present invention should be regarded as well-known technology in the field of this art, which can be known and mastered by those skilled in the art.

[0023] This invention provides a paper-based document box instead of a plastic one, such as... Figure 1 and Figure 3 As shown, the document includes a file frame box 1 and a file inner box 2. The file frame box 1 is a box-shaped structure with an opening at one end. The file inner box 2 is located inside the file frame box 1 and is connected to the file frame box 1 by a magnetic structure. The top and sides of the file inner box 2 are respectively provided with metal sheets. The top inner wall of the file frame box 1 is provided with a first magnet 12. The bottom of the side wall of the file frame box 1 away from the opening is provided with a protrusion 13. The outer surface of the protrusion 13 is provided with a second magnet 14.

[0024] This invention consists of a file frame box 1 and a file inner box 2, which are connected by a magnetic structure for easy access. When a more important file is encountered, the file inner box 2 containing the file can be removed and attached to the top of the file frame box 1, thus distinguishing it from other file inner boxes 2.

[0025] like Figure 5 As shown, the inner box 2 includes a first inner box 21 and a second inner box 22. The first inner box 21 and the second inner box 22 are distributed alternately inside the document frame box 1. The second inner box 22 has symmetrically distributed grooves 23 at one end near the opening of the document frame box 1. The edge of the opening of the document frame box 1 has a notch 15. Through the grooves 23 and the notch 15, the user can easily take out the two inner boxes.

[0026] The document frame box 1 and the document inner box 2 are made of plastic-substitute paper material. The document frame box 1 includes a wear-resistant layer, a first paper base layer and a first heat-sealing layer from the outside to the inside. The document inner box 2 includes a second heat-sealing layer, a second paper base layer and a moisture-proof layer from the outside to the inside. The height difference between the internal height of the document frame box 1 and the height of the document inner box 2 is greater than the height of the protrusion 13.

[0027] The document frame box 1 and the inner document box 2 of this invention are made of paper material that is different from traditional plastic document boxes, which can reduce environmental pollution. The document frame box 1 includes a wear-resistant layer, a first paper base layer and a first heat-sealing layer from the outside to the inside, making the document frame box 1 more wear-resistant and better protecting the inner document box 2. The inner document box 2 includes a second heat-sealing layer, a second paper base layer and a moisture-proof layer from the outside to the inside, which can prevent moisture from damaging the documents stored in it.

[0028] More specifically, with increasing environmental awareness and growing global concern about plastic pollution, the use of traditional plastic document boxes faces numerous challenges. To address these issues, a range of alternatives have emerged on the market, aiming to reduce environmental impact and improve safety and efficiency. Here are some possible solutions: 1. Paper or Biodegradable Document Boxes: In response to the environmental policy of "replacing plastic with paper," many companies have begun producing paper or biodegradable document boxes. These materials not only reduce the use of plastic but are also more easily decomposed after disposal, reducing environmental pollution. At the same time, paper document boxes maintain a clean and professional appearance.

[0029] 2. Environmentally Friendly Plastic File Boxes: While traditional plastic file boxes present environmental concerns, some companies have developed file boxes made from environmentally friendly plastics (such as bio-based plastics). These plastics are derived from renewable resources, such as corn starch and sugarcane, which can reduce dependence on traditional petroleum-based plastics to some extent and have a smaller environmental impact after disposal.

[0030] 3. Metal or Wooden File Boxes: Besides paper and plastic, metal (such as aluminum alloy) and wood are also environmentally friendly options for making file boxes. Metal file boxes are sturdy and durable, highly reusable, and easy to recycle. Wooden file boxes have a natural aesthetic appeal, and if sustainable forestry resources are used, they have a smaller environmental impact.

[0031] As an alternative to traditional plastic file boxes, metal file boxes, especially those made of aluminum alloy, are generally heavier than plastic or paper file boxes. This increases the difficulty of transportation and handling, as well as material and manufacturing costs. For users who need to frequently move or carry documents, this can be a significant burden. Metal is a good conductor of electricity, so special safety precautions are needed when using it in humid environments or areas prone to lightning strikes to prevent the risk of static electricity or electric shock. Due to the rigidity and toughness of metal, metal file boxes are generally difficult to design with the same versatility and foldability as paper or plastic ones. This limits their application in scenarios where space-saving is crucial.

[0032] While wood possesses natural beauty, it is also relatively heavy, and its durability is greatly affected by factors such as wood species and processing techniques. Some types of wood may be susceptible to moisture, warping, or cracking, affecting their lifespan. Although using sustainable forestry resources can reduce environmental impact, ensuring the sustainability of timber sources is not easy. Illegal logging and deforestation still exist in the market, causing damage to the ecological environment. Furthermore, wood is flammable, so using wooden document boxes in locations with high fire safety requirements may pose certain safety hazards.

[0033] Meanwhile, paper and biodegradable document boxes actively respond to the "paper instead of plastic" environmental policy, significantly reducing plastic use and environmental pollution. After disposal, these materials are more easily decomposed naturally, reducing long-term impacts on ecosystems. Paper comes from renewable resources such as trees, and sustainable forestry management ensures the sustainability of paper production. Compared to some high-end environmentally friendly plastics, paper document boxes may be less expensive, making eco-friendly office solutions more affordable for more businesses and individuals.

[0034] Furthermore, environmentally friendly plastic file boxes inherit the durability of traditional plastics, capable of withstanding significant weight and frequent use without easily breaking. File boxes made from environmentally friendly materials such as bio-based plastics reduce reliance on traditional petroleum-based plastics, minimizing negative environmental impact. After disposal, these materials can be reused or degraded through specific recycling processes. Environmentally friendly plastic file boxes can be designed in various shapes and sizes to meet the needs of different users. Additionally, some products also feature waterproof and dustproof capabilities.

[0035] However, paper document boxes may not be as durable as plastic or metal ones. They are prone to deformation or damage after prolonged use or when bearing heavy loads. Paper is not inherently waterproof, so documents may be damaged if stored in a humid environment or exposed to water. Due to the physical properties of paper, its load-bearing capacity is relatively limited, making it unsuitable for storing excessively heavy documents or items.

[0036] Environmentally friendly plastic document boxes may cost more than paper or traditional plastic document boxes. This is mainly due to the higher production costs of environmentally friendly materials such as bio-based plastics. Although environmentally friendly plastic document boxes have a smaller environmental impact after disposal, their recycling process can be relatively complex. Specialized recycling systems and processing technologies are needed to ensure the effective reuse or degradation of these materials.

[0037] In summary, using plastic-substitute paper and adding an environmentally friendly, waterproof, and wear-resistant plastic coating can effectively solve the problems of insufficient durability and water resistance of paper document boxes. To address the issues of durability and water resistance, this invention designs a file box consisting of an outer file frame 1 and an inner file box 2. The file frame 1 comprises, from the outside in, a wear-resistant layer, a first paper base layer, and a first heat-sealing layer. The outermost layer of the file frame 1 is designed as a wear-resistant layer, which effectively resists physical damage such as friction and scratches during daily use, extending the service life of the file frame 1. The first paper base layer serves as a transition layer between the wear-resistant layer and the internal structure, providing excellent support and stability, ensuring the overall structure of the file frame 1 is robust and durable. The first heat-sealing layer not only enhances the sealing performance of the file frame 1 but also further improves its structural strength, effectively preventing deformation or damage to the file frame 1 due to external forces, thereby better protecting the inner file box 2 and the stored documents.

[0038] The inner document box 2 comprises, from the outside in, a second heat-sealing layer, a second paper base layer, and a moisture-proof layer. The outer layer of the inner document box 2 uses heat-sealing technology to form the second heat-sealing layer, which helps to improve the sealing performance of the inner box and prevent the intrusion of external moisture or dust. The second paper base layer, as the main structural layer of the inner document box 2, provides the necessary load-bearing capacity and stability to ensure that documents can be stored safely and neatly. The innermost moisture-proof layer can effectively isolate moisture in the air, prevent stored documents from becoming moldy or damaged due to moisture, and ensure the long-term preservation quality of documents.

[0039] The first heat-sealing layer, second heat-sealing layer, wear-resistant layer, and moisture-proof layer all use biodegradable and environmentally friendly materials. For example, the first and second heat-sealing layers use polylactic acid (PLA) and polyhydroxyalkanoates (PHA). These materials are derived from renewable resources such as corn starch and sugarcane, have good biodegradability, and can be completely decomposed into carbon dioxide and water by microorganisms under certain conditions.

[0040] The wear-resistant layer combines the wear resistance of natural rubber with the biodegradability of bio-based plastics to create a composite material that is both wear-resistant and environmentally friendly. The moisture-proof layer, through the addition of waterproofing agents, thickeners, and other additives, gives the modified starch-based material excellent waterproof performance. Alternatively, a bio-based polyurethane (PU) waterproof coating can be used. Polyurethane waterproof coatings prepared from bio-based polyols not only have good waterproof performance but are also biodegradable. They offer superior waterproof and moisture-proof performance, effectively preventing water vapor penetration. They are also environmentally friendly and biodegradable, reducing environmental pollution.

[0041] The document inner box 2 of this invention has metal sheets at its top and sides, and a first magnet 12 is provided on the inner wall of the top of the document frame box 1. A protrusion 13 is provided at the bottom of the side wall of the document frame box 1 away from the opening, and a second magnet 14 is provided on the outer surface of the protrusion 13. The document inner box 2 and the document frame box 1 are magnetically connected by the first metal sheet 24 and the first magnet 12 or by the second metal sheet 25 and the second magnet 14. The height difference between the internal height of the document frame box 1 and the height of the document inner box 2 is greater than the height of the protrusion 13.

[0042] This invention consists of a file frame box 1 and a file inner box 2, which are connected by a magnetic structure for easy access. When a more important file is encountered, the file inner box 2 containing the file can be removed and attached to the top of the file frame box 1, thus distinguishing it from other file inner boxes 2.

[0043] The metal sheet includes a first metal sheet 24 and a second metal sheet 25. The first metal sheet 24 is located at the top of the inner document box 2, and the second metal sheet 25 is located at the bottom of the inner document box 2 away from the opening. The height of the second metal sheet 25 matches the height of the second magnet 14. The inner document box 2 and the document frame box 1 are magnetically connected by the first metal sheet 24 and the first magnet 12 or by the second metal sheet 25 and the second magnet 14.

[0044] from Figure 3 and Figure 4 As can be seen, the inner document box 2 and the outer document box 1 can only be secured by a single magnetic attraction point; they cannot be secured by magnetic attraction points simultaneously. The magnetic attraction structure allows for quick and seamless connection and separation between the inner document box 2 and the outer document box 1. Users do not need to use additional latches, screws, or other complex mechanisms; simply bringing the inner document box 2 close to the magnetic attraction point achieves a secure fixation. Similarly, separation is also simple, requiring only a gentle lift, greatly improving the efficiency of document access. Although the connection process is simple, the fixing force provided by the magnetic attraction structure is quite stable. Appropriate selection and placement of magnets ensure that the inner document box 2 maintains a stable position within the outer document box 1.

[0045] If the inner document box 2 is fixed to the document frame box 1 using two magnetic structures, it will increase the attraction between the inner document box 2 and the document frame box 1, forcing the user to apply more force to remove the inner document box 2, making it more difficult to remove. Therefore, the present invention provides a protrusion 13 at the bottom of the side wall of the document frame box 1 away from the opening, and a second magnet 14 is provided on the outer surface of the protrusion 13. The height difference between the internal height of the document frame box 1 and the height of the inner document box 2 is greater than the height of the protrusion 13. Once the document frame box 1 and the inner document box 2 are connected to the metal sheet by the first magnet 12, the inner document box 2 will not come into contact with the second magnet 14.

[0046] At the same time, due to the setting of the bump 13, there is a gap between the position above the bump 13 and the inner box 2 of the document, such as Figure 2 As shown, the inner document box 2 is attached to the top of the document frame box 1 and can be pushed inwards to fill the gaps as needed, making it uneven with the other inner document boxes 2 for easier retrieval. At least three first magnets 12 are provided, evenly distributed along the adsorption side plate 33 towards the opening. Dividing the first magnets 12 into three or more improves the adhesion between the inner document box 2 and the top of the document frame box 1 when pushed inwards. If a single, large magnet were used, the adhesion between the first magnet 12 and the inner document box 2 would be too strong, making it difficult for the user to remove it.

[0047] It is worth noting that, for example Figure 4 and Figure 5 As shown, to facilitate user removal of the inner document box 2, the document frame box 1 has a notch 15 at the edge of its opening, and the second inner box 22 has symmetrical grooves 23 spaced apart. To remove the second inner box 22, simply grasp the two grooves 23 with your fingers. To remove the first inner box 21, place your fingers in the two grooves 23 near the first inner box 21 and clamp it to remove it. If the first inner box 21 is close to the document frame box 1, place your fingers in the grooves 23 and the notch 15 near the first inner box 21 and clamp it to remove it.

[0048] As one of the preferred embodiments of the present invention, such as Figure 4 As shown, the file box 1 consists of a top plate 31, a bottom plate 32, an adsorption side plate 33, and two opposing, spaced-apart support plates 34. The adsorption side plate 33 is located between the two support plates 34. The ends of the two support plates 34 away from the adsorption side plate 33 form openings with the top plate 31 and the bottom plate 32. A first magnet 12 is located on the inner wall of the top plate 31, and a protrusion 13 and a second magnet 14 are located at the bottom end of the inner wall of the adsorption side plate 33. In this invention, the length of the two support plates 34 is the height of the file box 1.

[0049] Notches 15 are located near the openings of the two support plates 34. Notches 15 have two sets, including a first notch and a second notch. The first notch is located on the support plate 34 at a height flush with the groove 23 of the second inner box 22. The second notch is located on the support plate 34 at a height flush with the protrusion 13. When the inner box 2 is not tightly attached to the top of the document frame box 1, the first inner box 21, which is tightly attached to the document frame box 1, utilizes the first notch and groove 23 to allow the inner box 2 to be removed. When the inner box 2 is tightly attached to the top of the document frame box 1, the first inner box 21, which is tightly attached to the document frame box 1, utilizes the second notch and the space below the inner box 2, which is tightly attached to the top of the document frame box 1, to allow the inner box 2 to be removed.

[0050] The top plate 31, bottom plate 32, adsorption side plate 33, and support plate 34 are connected by their respective first heat-sealing layers. The first magnet 12 and the protrusion 13 are respectively fixed inside the file frame box 1 by the first heat-sealing layer of the file frame box 1. In this invention, the first heat-sealing layer of the file frame box 1 is located on the innermost side, so that the first heat-sealing layer can fix the first magnet 12 and the second magnet 14.

[0051] As one of the preferred embodiments of the present invention, such as Figure 6 As shown, the inner document box 2 includes a box body 26 and a door 27. One end of the door 27 is connected to the box body 26 via a hinge, and the other end is connected to the box body 26 via a magnetic structure. The door 27 is located below the first metal sheet 24. The box body 26 is fixed to the first metal sheet 24 and the second metal sheet 25 by a second heat-sealing layer. A label 28 is provided on the end of the box body 26 away from the protrusion 13, which facilitates the user in finding the required document. When using the magnetic structure, the user can easily open and close the door 27. Unlike the magnetic structure between the inner document box 2 and the document frame box 1, the magnetic structure between the box body 26 and the door 27 uses smaller magnets, such as miniature square magnets or cylindrical magnets, which can save space and reduce the overall weight. These magnets typically have a high magnetic energy product and magnetic force, which is sufficient to meet the adsorption requirements between the box body 26 and the door 27.

[0052] The groove 23 of the second inner box 22 is located near the first metal sheet 24. The groove 23 is formed by pressing a plastic-substitute paper material. The groove 23 is formed by pressing rather than cutting to ensure that the entire second inner box 22 uses a plastic-substitute paper structure. If the groove 23 were made by cutting, the moisture-proof layer at that location might be affected. It should also be noted that because the second inner box 22 has the groove 23, its document-accommodating area is smaller than that of the first inner box 21. Appropriate document inner boxes 2 can be selected for storage based on the size of the documents.

[0053] The above description is only a preferred embodiment of the present invention. It should be noted that those skilled in the art can make several improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A paper-based file box, comprising a file frame box (1) and an inner file box (2), wherein the file frame box (1) is a box-shaped structure with an opening at one end, and the inner file box (2) is disposed inside the file frame box (1) and is connected to the file frame box (1) via a magnetic structure, characterized in that, The top and side of the inner box of the document are respectively provided with metal sheets, the inner wall of the top of the document frame box (1) is provided with a first magnet (12), the bottom of the side wall away from the opening of the document frame box (1) is provided with a protrusion (13), and the outer surface of the protrusion (13) is provided with a second magnet (14). The file frame box (1) and the file inner box (2) are respectively made of plastic-substitute paper material. The file frame box (1) includes a wear-resistant layer, a first paper base layer and a first heat-sealing layer from the outside to the inside. The file inner box (2) includes a second heat-sealing layer, a second paper base layer and a moisture-proof layer from the outside to the inside. The height difference between the internal height of the file frame box (1) and the height of the file inner box (2) is greater than the height of the protrusion (13). The inner box (2) includes a first inner box (21) and a second inner box (22). The first inner box (21) and the second inner box (22) are spaced apart inside the file frame box (1). The second inner box (22) has symmetrically distributed grooves (23) at one end near the opening of the file frame box (1). The file frame box (1) has a notch (15) at the edge of the opening.

2. The paper-based document box according to claim 1, characterized in that, The file box (1) is composed of a top plate (31), a bottom plate (32), an adsorption side plate (33), and two opposing and spaced support plates (34). The adsorption side plate (33) is located between the two support plates (34). The ends of the two support plates (34) away from the adsorption side plate (33) form an opening with the top plate (31) and the bottom plate (32). The first magnet (12) is located on the inner wall of the top plate (31). The protrusion (13) and the second magnet (14) are located at the bottom of the inner wall of the adsorption side plate (33). The notch (15) is located near the opening of the two support plates (34).

3. The paper-based document box according to claim 2, characterized in that, The top plate (31), bottom plate (32), adsorption side plate (33) and support plate (34) are connected by their respective first heat-sealing layers. The first magnet (12) and the protrusion (13) are fixed inside the file frame box (1) by the first heat-sealing layer of the file frame box (1).

4. The paper-based document box according to claim 1, characterized in that, The metal sheet includes a first metal sheet (24) and a second metal sheet (25). The first metal sheet (24) is located at the top of the inner document box (2), and the second metal sheet (25) is located at the bottom of the inner document box (2) away from the opening. The height of the second metal sheet (25) matches the height of the second magnet (14). The inner document box (2) and the document frame box (1) are magnetically connected by the first metal sheet (24) and the first magnet (12) or by the second metal sheet (25) and the second magnet (14).

5. The paper-based document box according to claim 1, characterized in that, The document inner box (2) includes a box body (26) and a box door (27). One end of the box door (27) is connected to the box body (26) by a hinge, and the other end is connected to the box body (26) by a magnetic structure. The box door (27) is located below the first metal sheet (24). The box body (26) is fixed to the first metal sheet (24) and the second metal sheet (25) by a second heat-sealing layer. A label (28) is provided on the end of the box body (26) away from the protrusion (13).

6. The paper-based document box according to claim 2, characterized in that, Each of the support plates (34) is provided with a set of notches, the set of notches including a first notch and a second notch, the first notch being located on the support plate (34) at a height level with the groove (23) of the second inner box (22), and the second notch being located on the support plate (34) at a height level with the protrusion (13).

7. The paper-based document box according to claim 1, characterized in that, The groove (23) of the second inner box (22) is located near the first metal sheet (24) of the second inner box (22), and the groove (23) is formed by extruding the plastic paper material.

8. The paper-based document box according to claim 2, characterized in that, The first magnet (12) is provided in at least three, and the three first magnets (12) are evenly distributed along the inner wall of the top plate (31) from the adsorption side plate (33) toward the opening direction.

Images