Foldable fresh-keeping box with atmosphere control, shockproof and de-astringency

By designing a foldable modified atmosphere, shockproof, and de-astringency-removing preservation box, which integrates modified atmosphere, shockproof, and de-astringency-removing functions, the convenience and preservation problems of fruits and vegetables such as persimmons during transportation are solved, thereby extending the shelf life and improving the quality.

CN224336071UActive Publication Date: 2026-06-09BEIJING ACADEMY OF AGRICULTURE & FORESTRY SCIENCES

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
BEIJING ACADEMY OF AGRICULTURE & FORESTRY SCIENCES
Filing Date
2025-07-02
Publication Date
2026-06-09

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Abstract

The utility model relates to a kind of foldable atmosphere control shockproof astringency-removing fresh-keeping box, box and upper cover are provided with fold; Box is provided with vent hole;Upper cover is provided with atmosphere control film;First baffle, second baffle and shock pad are arranged in box;First baffle and second baffle are cross-connected;Integrated atmosphere control, shockproof, astringency-removing function in one, and foldable, suitable for the transportation fresh-keeping box of fruit such as persimmon etc.;It can minimize the extrusion, knock of fruit such as persimmon in storage and transportation process;And inhibit the respiration of fruit by atmosphere control technology, reduce the consumption of nutrient substance;While inhibiting the growth and reproduction of microorganism on the surface and inside of fruit, and reduce the tannin content in fruit such as persimmon, to achieve astringency-removing effect;Further realize the purpose of prolonging the storage period of fruit such as persimmon and improving fruit quality, improve the economic value of fruit such as persimmon;Its box and upper cover are folded, reduce transportation cost, reduce space occupation in transportation process, improve logistics efficiency.
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Description

Technical Field

[0001] This utility model belongs to the field of agricultural product storage, transportation and preservation technology, specifically relating to a foldable modified atmosphere shockproof degreasing and preservation box. Background Technology

[0002] Currently, fruits and vegetables such as persimmons are not suitable for long-term storage. During storage and transportation, they release ethylene, which accelerates fruit aging and shortens storage time. Furthermore, persimmons and similar fruits are highly susceptible to mechanical damage from squeezing and collisions during transportation, and these wounds are easily infected by pathogens, leading to fruit rot and a significant decline in quality. Additionally, the presence of tannins in persimmons results in some fruits having a strong astringent taste and poor palatability. These problems not only affect the market sales of persimmons but also hinder their subsequent processing and utilization, becoming a key bottleneck restricting the further development of the persimmon processing industry.

[0003] Existing technologies disclose several fruit and vegetable preservation devices, such as those for persimmons. For example, Chinese utility model patent document ZL202123147439.1 discloses a persimmon logistics preservation box suitable for e-commerce, which uses a manual piston device to extract air from the box, improving sealing performance and thus extending the preservation time of persimmons. Chinese utility model patent document ZL202023120650.X discloses a shockproof preservation box for persimmon transportation, which uses foam boards to protect fruits and vegetables from compression and can maintain a low-temperature environment using dry ice. Chinese utility model patent document ZL202120154563.1 discloses a mobile preservation-type persimmon transportation device, which uses a spring and hydraulic rod connection to form a buffer and shock absorption system to reduce collision damage to persimmons during transportation.

[0004] Although the aforementioned existing fruit and vegetable preservation devices can achieve a certain preservation effect on fruits and vegetables such as persimmons, they are mostly based on shock absorption and still have shortcomings such as poor convenience during transportation and lack of astringency removal effect. Utility Model Content

[0005] To address at least one of the problems in the prior art, the purpose of this utility model is to provide a foldable modified atmosphere shockproof de-astringency preservation box, which can minimize the squeezing and bumping of fruits and vegetables such as persimmons during storage and transportation; and inhibit the respiration of fruits through modified atmosphere technology, reducing the consumption of nutrients; at the same time, it inhibits the growth and reproduction of microorganisms on the surface and inside of the fruits, and reduces the tannin content in fruits and vegetables such as persimmons, so as to achieve the de-astringency effect; thereby extending the shelf life of fruits and vegetables such as persimmons and improving fruit quality, and increasing the economic value of fruits and vegetables such as persimmons.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A foldable modified atmosphere shockproof and desiccant preservation box includes:

[0008] The box body has first creases on its two opposite side walls; ventilation holes are opened on the side walls of the box body.

[0009] The top cover has second creases on its two opposite side walls; the side walls of the top cover are provided with modified atmosphere membranes; the top cover is placed on the box body, and the modified atmosphere membranes correspond to the positions of the vent holes.

[0010] Shock-absorbing pads are installed inside the enclosure;

[0011] The first partition and the second partition are both disposed inside the box; the first partition and the second partition are cross-connected.

[0012] Preferably, the sidewall of the top cover is provided with a mesh structure, and the modified atmosphere membrane is disposed inside the mesh structure.

[0013] Preferably, the side wall of the top cover has a modified atmosphere hole, and a second annular modified atmosphere component is disposed in the modified atmosphere hole, and the mesh structure is disposed on the annular structure of the second modified atmosphere component.

[0014] Preferably, a second buckle is provided on the outer edge of the second modified atmosphere component, and the second buckle is connected to the side wall of the upper cover at the modified atmosphere hole.

[0015] Preferably, a first annular modified atmosphere assembly is provided inside the vent.

[0016] Preferably, a first buckle is provided on the outer edge of the first modified atmosphere component, and the first buckle is connected to the side wall of the housing at the vent.

[0017] Preferably, a sealing strip is provided between the side wall of the top cover and the side wall of the box body.

[0018] Preferably, at least one of the first partition and the second partition has air holes.

[0019] Preferably, the second partition has a groove, and the first partition is embedded in the groove.

[0020] Preferably, the first crease is set as an inverted V-shape, and the second crease is set as a V-shape.

[0021] This utility model has the following advantages due to the adoption of the above technical solution:

[0022] 1. The foldable modified atmosphere, shockproof, and astringency-removing preservation box provided by this utility model integrates modified atmosphere, shockproof, and astringency-removing functions into one unit and is foldable. It is suitable for transporting and preserving fruits such as persimmons. It can minimize the squeezing and bumping of fruits and vegetables such as persimmons during storage and transportation; and inhibit the respiration of fruits through modified atmosphere technology, reducing the consumption of nutrients; at the same time, it inhibits the growth and reproduction of microorganisms on the surface and inside of fruits, and reduces the tannin content in fruits and vegetables such as persimmons, so as to achieve the astringency-removing effect; thereby extending the shelf life of fruits and vegetables such as persimmons and improving fruit quality, thereby increasing the economic value of fruits and vegetables such as persimmons; its box body and lid are easy to fold, reducing transportation costs, reducing space occupation during transportation, and improving logistics efficiency.

[0023] 2. The foldable modified atmosphere shockproof and desiccant preservation box provided by this utility model has a mesh structure on the side wall of its top cover, and the modified atmosphere film is placed inside the mesh structure. This can protect the breathable film from damage while ensuring the breathability of the modified atmosphere film, thereby improving its service life and reliability. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the body structure of a foldable modified atmosphere shockproof degreasing and preservation box provided in one embodiment of this utility model.

[0025] Figure 2 This is a schematic diagram of the structure of a foldable modified atmosphere shockproof degreasing and preservation box provided in one embodiment of this utility model.

[0026] Figure 3 This is a schematic diagram of the modified atmosphere film structure of a foldable modified atmosphere anti-vibration and desiccation preservation box provided in one embodiment of this utility model.

[0027] Figure 4 This is a schematic diagram of the second buckle and mesh structure of a foldable modified atmosphere shockproof and desiccant preservation box provided in one embodiment of the present invention.

[0028] Figure 5 This is a left view of the second buckle and mesh structure of a foldable modified atmosphere shockproof and desiccant preservation box provided in an embodiment of this utility model.

[0029] Figure 6 This is a schematic diagram of the first buckle structure of a foldable modified atmosphere shockproof and desiccant preservation box provided in an embodiment of this utility model.

[0030] Figure 7 This is a right view of the first buckle of a foldable modified atmosphere shockproof and desiccant preservation box provided in an embodiment of this utility model.

[0031] Figure 8 This is a schematic diagram of the second partition structure of a foldable modified atmosphere shockproof desiccant food preservation box provided in one embodiment of this utility model.

[0032] Figure 9 This is a schematic diagram of the first partition structure of a foldable modified atmosphere shockproof degreasing and preservation box provided in one embodiment of the present invention.

[0033] Marked in the attached diagram:

[0034] 1. Top cover, 2. Modified atmosphere membrane, 3. First buckle, 4. Box body, 5. Sealing strip, 6. Air vent, 7. First partition, 8. Second partition, 9. Vent hole, 10. First crease, 11. Anti-vibration pad, 12. Groove, 13. First modified atmosphere assembly, 14. Second modified atmosphere assembly, 15. Mesh structure, 16. Second crease, 17. Second buckle. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0036] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the system or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. The direction of the arrows in the figures represents the direction of liquid flow.

[0037] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "assembly," "setup," and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0038] This utility model provides a foldable modified atmosphere packaging box for shockproof and de-astringency removal. Folds are provided on the box body and top cover to facilitate folding for storage and transportation when not in use. The box body is divided into multiple independent storage spaces for fruits by partitions, and shockproof pads are installed inside to prevent damage. Ventilation holes are provided on the side walls of the box body, and a modified atmosphere film is installed on the side wall of the top cover to create a high CO2, low O2 environment inside the box, which is beneficial for de-astringency removal and preservation of fruits and vegetables such as persimmons.

[0039] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0040] Example

[0041] Please refer to the reference. Figures 1 to 3 The foldable modified atmosphere shockproof and desiccant preservation box provided in this embodiment includes a box body 4, a top cover 1, a shockproof pad 11, a first partition 7, and a second partition 8. The two opposite side walls of the box body 4 are respectively provided with first creases 10; ventilation holes 9 are opened on the side walls of the box body 4; the two opposite side walls of the top cover 1 are respectively provided with second creases 16; a modified atmosphere film 2 is provided on the side wall of the top cover 1; the top cover 1 is placed on the box body 4, and the modified atmosphere film 2 corresponds to the ventilation holes 9; the shockproof pad 11 is placed inside the box body 4; the first partition 7 and the second partition 8 are both placed inside the box body 4; the first partition 7 and the second partition 8 are cross-connected.

[0042] In this embodiment, the foldable modified atmosphere shockproof and desiccant preservation box can be folded along the first fold line 10 and the top cover 1 along the second fold line 16 when not in use, so as to reduce the volume of the box body 4 and the top cover 1, making it easier to store and transport them.

[0043] In use, the box 4 can be unfolded along the first fold 10, and the top cover 1 along the second fold 16. The shock-absorbing pad 11 is placed inside the box 4, followed by the cross-connected first partition 7 and second partition 8. Then, fruits of similar ripeness, diameter, and weight, such as fresh persimmons, can be placed in a 0°C pre-cooling room for two hours, maintaining a relative humidity of 90%–95%. The cross-connected first partition 7 and second partition 8 divide the box 4 into multiple storage spaces. After pre-cooling, the persimmons are quickly placed into these spaces, effectively preventing collisions between them. The shock-absorbing pad 11 inside the box 4 effectively cushions vibrations during transport, preventing damage from impacts. A preservative can also be placed inside the box 1. Finally, the top cover 1 is placed over the box 4. The modified atmosphere membrane 2 filters O2 and CO2 by adjusting the size of the gaps between molecular chains, thereby regulating the permeation rates of O2 and CO2 on both sides of the membrane 2. This creates a high-CO2, low-O2 environment within the chamber 4 and automatically maintains a stable gas environment. The high concentration of CO2 causes the persimmons to undergo anaerobic respiration, producing substances such as acetaldehyde. These substances combine with the soluble tannins in the persimmons, converting them into insoluble tannins, thus removing astringency and improving the taste of the persimmons.

[0044] The box body 4 can be a rectangular box body, and the top cover 1 can be a rectangular cover. The top cover 1 can be a rectangular cylinder, and the inner diameter of the top cover 1 can be greater than or equal to the outer diameter of the box body 4. The top of the top cover 1 has a top surface and the bottom is open, for fitting over the outside of the box body 4.

[0045] The modified atmosphere packaging membrane 2 can be made of low-density polyethylene (LDPE) film, a product of existing technology, with a thickness of 50 μm and a model number of 2102TN26. Because LDPE molecules have numerous branches, there are gaps between these chains, and the size of these gaps plays a crucial role in the permeation of gas molecules. O2 and CO2 molecules differ in size; O2 molecules are relatively smaller and pass through these gaps more easily, while CO2 molecules are relatively larger and have greater difficulty passing through. This difference in permeation rates between O2 and CO2 allows for the regulation of the permeation rate of O2 and CO2 through the modified atmosphere packaging membrane 2. A 50 μm thick LDPE film can achieve good preservation results for persimmons using modified atmosphere packaging.

[0046] The modified atmosphere membrane 2 can be circular, and the vent 9 can be a circular through hole. The diameters of the modified atmosphere membrane 2 and the vent 9 can be equal. When the top cover 1 is placed on the housing 4, the positions of the modified atmosphere membrane 2 and the vent 9 correspond.

[0047] Ventilation holes 9 can be opened on the two opposite side walls of the housing 4, and modified atmosphere membranes 2 can be installed on the two opposite side walls of the top cover 1. The ventilation holes 9 can be located on the same side wall of the housing 4 as the first crease 10. The modified atmosphere membrane 2 can be located on the same side wall of the top cover as the second crease 16.

[0048] Please refer to the reference. Figure 1 , Figure 8 and Figure 9 Both the first partition 7 and the second partition 8 can be rectangular plates, and both can be polypropylene (PP) plates. The first partition 7 and the second partition 8 can be vertically connected, and they can be parallel to the two opposite side walls of the box 4, respectively.

[0049] like Figure 1 As shown, the shock-absorbing pad 11 can be made of silicone. The shock-absorbing pad 11 can be applied to the bottom and inner walls of the housing 1.

[0050] Moreover, such as Figure 1 and Figure 2 As shown, the first crease 10 is set as an inverted V shape, and the second crease 16 is set as a V shape.

[0051] The vent 9 can be located within the first fold 10 of the inverted V-shape. The modified atmosphere membrane 2 can be located within the second fold 16 of the V-shape.

[0052] The bottom apex of the first inverted V-shaped crease 10 can be located at the middle of the bottom edge of the side wall of the box body 4, and the two top ends of the first inverted V-shaped crease 10 can be located at the two top corners of the side wall of the box body 4. The top apex of the second V-shaped crease 16 can be located at the middle of the top edge of the side wall of the top cover 1, and the two bottom ends of the second V-shaped crease 16 can be located at the two bottom corners of the side wall of the top cover 1.

[0053] For details, please refer to the following: Figure 2 , Figure 4 and Figure 5 The side wall of the top cover 1 is provided with a mesh structure 15, and the modified atmosphere membrane 2 is located on the inner side of the mesh structure 15. Here, the inner side refers to the side closer to the internal center of the housing 4, so that the modified atmosphere membrane 2 is protected by the mesh structure 15 and damaged.

[0054] The mesh structure 15 can be circular. The diameter of the modified atmosphere membrane 2 can be greater than or equal to the diameter of the mesh structure 15.

[0055] Furthermore, the side wall of the top cover 1 has a modified atmosphere hole, and a second modified atmosphere component 14 is arranged in the modified atmosphere hole. A mesh structure 15 is arranged on the ring structure of the second modified atmosphere component 14.

[0056] The modified atmosphere orifice can be a circular through-hole, and the second modified atmosphere component 14 can be annular. The inner diameter of the modified atmosphere orifice can be equal to the outer diameter of the second modified atmosphere component 14. The mesh structure 15 can be thermoplasticized onto the second modified atmosphere component 14 using polycarbonate.

[0057] The diameter of the mesh structure 15 can be greater than or equal to the inner diameter of the second modified atmosphere assembly 14.

[0058] Furthermore, a second latch 17 is provided on the outer edge of the second modified atmosphere assembly 14, and the second latch 17 is connected to the side wall of the upper cover 1 at the modified atmosphere hole. That is, the second latch 17 is engaged and connected to the side wall of the upper cover 1 at the modified atmosphere hole.

[0059] The second buckle 17 can be configured as a ring. The second modified atmosphere assembly 14 can be bonded to the side wall of the upper cover 1 by a hot-melt process. The outer side of the second modified atmosphere assembly 14 is configured as a mesh structure 15 formed by thermoplastic polycarbonate, and the modified atmosphere film 2 formed by low-density polyethylene film is located inside the mesh structure 15.

[0060] Specifically, such as Figure 1 As shown, a first annular atmosphere control component 13 is provided inside the vent 9.

[0061] The first modified atmosphere assembly 13 can be configured as an annular shape. The inner diameter of the vent 9 can be equal to the outer diameter of the first modified atmosphere assembly 13.

[0062] Moreover, such as Figure 1 , Figure 6 and Figure 7 As shown, a first buckle 3 is provided on the outer edge of the first modified atmosphere assembly 13, and the first buckle 3 is connected to the side wall of the housing 4 at the vent 9. That is, the first buckle 3 is engaged and connected to the side wall of the housing 4 at the vent 9.

[0063] The first buckle 3 can be set as a ring.

[0064] Specifically, such as Figure 2 As shown, a sealing strip 5 is installed between the side wall of the top cover 1 and the side wall of the container 4. The sealing strip 5 seals the nesting point between the top cover 1 and the container 4. After the food storage container is used, the sealing strip 5 can be removed, and then the top cover 1 and the container 4 can be folded up for reuse.

[0065] The sealing strip 5 can be made of silicone and can be set as an annular ring, for example, the sealing strip 5 can be set as a rectangular ring.

[0066] Specifically, such as Figure 1 , Figure 8 and Figure 9 As shown, at least one of the first partition 7 and the second partition 8 has an air hole 6.

[0067] The vent 6 can be a circular through hole. The first partition 7 and the second partition 8 can each have at least two vents 6, which are evenly distributed. Alternatively, the first partition 7 and the second partition 8 can each have multiple vents 6.

[0068] Specifically, the second partition 8 has a groove 12, and the first partition 7 is embedded and connected in the groove 12.

[0069] The groove 12 is formed on the top edge of the second partition 8 and is configured as a rectangular opening. The first partition 7 and the second partition 8 can each be configured as at least two, and the number of grooves 12 formed on each second partition 8 is equal to the number of grooves 12 formed on the first partition 7, and the multiple grooves 12 are evenly distributed.

[0070] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A foldable modified atmosphere shockproof and degreasing food preservation box, characterized in that, include: The box (4) has first creases (10) on its two opposite side walls; ventilation holes (9) are opened on the side walls of the box (4). The top cover (1) has a second crease (16) on its two opposite side walls; the side walls of the top cover (1) are provided with a modified atmosphere membrane (2); the top cover (1) is placed on the box body (4), and the modified atmosphere membrane (2) corresponds to the position of the vent (9); A shock-absorbing pad (11) is installed inside the housing (4); The first partition (7) and the second partition (8) are both disposed inside the box (4); the first partition (7) and the second partition (8) are cross-connected.

2. The foldable modified atmosphere shockproof and degreasing food preservation box according to claim 1, characterized in that, The side wall of the top cover (1) is provided with a mesh structure (15), and the modified atmosphere membrane (2) is disposed inside the mesh structure (15).

3. The foldable modified atmosphere shockproof and degreasing food preservation box according to claim 2, characterized in that, The upper cover (1) has a modified atmosphere hole on its side wall, and a second modified atmosphere component (14) is provided in the modified atmosphere hole. The mesh structure (15) is provided on the ring structure of the second modified atmosphere component (14).

4. The foldable modified atmosphere shockproof and degreasing food preservation box according to claim 3, characterized in that, The outer edge of the second modified atmosphere assembly (14) is provided with a second buckle (17), which is connected to the side wall of the upper cover (1) at the modified atmosphere hole.

5. The foldable modified atmosphere shockproof and degreasing food preservation box according to claim 1, characterized in that, A first annular atmosphere control component (13) is provided inside the vent (9).

6. The foldable modified atmosphere shockproof and degreasing food preservation box according to claim 5, characterized in that, The outer edge of the first atmosphere control component (13) is provided with a first buckle (3), and the first buckle (3) is connected to the side wall of the box (4) at the vent (9).

7. The foldable modified atmosphere shockproof and degreasing food preservation box according to claim 1, characterized in that, A sealing strip (5) is provided between the side wall of the top cover (1) and the side wall of the box body (4).

8. The foldable modified atmosphere shockproof and degreasing food preservation box according to claim 1, characterized in that, At least one of the first partition (7) and the second partition (8) has an air hole (6).

9. The foldable modified atmosphere shockproof and degreasing food preservation box according to claim 1, characterized in that, The second partition (8) has a groove (12), and the first partition (7) is embedded in the groove (12).

10. The foldable modified atmosphere shockproof and degreasing food preservation box according to any one of claims 1-9, characterized in that, The first crease (10) is set as an inverted V shape, and the second crease (16) is set as a V shape.