Multi-layer heat insulation degradable meal box
By employing a multi-layered insulation design and a water droplet collection structure, the problems of heat loss and water splashing in biodegradable lunch boxes are solved, achieving both heat preservation and ease of use.
Patent Information
- Application Number
- CN202520508387.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-21
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-03-21
AI Technical Summary
Existing biodegradable food containers tend to lose internal heat when packaging hot food, which can alter the taste of the food and cause water droplets to splash, affecting the user experience.
A multi-layered heat-insulating biodegradable lunch box was designed. It achieves heat preservation through a support frame and folded plate structure, collects water droplets using limiting strips and partitions to prevent splashing, and combines water droplets with a permeable plate to form an inner and outer double-layer structure to extend the heat preservation time and prevent water droplet splashing.
It effectively keeps the food inside the lunchbox warm, prevents heat loss, reduces the frequency of use, lowers costs, and prevents water splashing, keeping the lunchbox clean and easy to use.
Smart Images

Figure CN223891428U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of meal box, especially a kind of multilayer heat insulation degradable meal box. BACKGROUND
[0002] Degradable meal box is a kind of environmental protection food packaging, usually made of degradable material, not only environmental protection, also have high strength, high hardness, temperature resistance is very good, therefore, it is used in take-out industry and picnic environment etc.
[0003] At present, the existing degradable meal box is mostly in the mode of single box and single cover, so when packaging hot food, the internal capacity is easy to lose to the outside, resulting in the change of food taste affecting eating effect.
[0004] To solve the above problems, a kind of multilayer heat insulation degradable meal box is provided in the present application. UTILITY MODEL CONTENTS
[0005] The utility model aims at providing a kind of multilayer heat insulation degradable meal box, solve the problem presented in the above background.
[0006] To solve the above technical problems, the utility model is realized by the following technical solutions:
[0007] The utility model is a kind of multilayer heat insulation degradable meal box, including meal box frame, bottom plate at its bottom and meal box cover above;
[0008] Support frame is located at the bottom outer circle position of meal box frame, is used to butt joint the flap above meal box frame so that adjacent meal box frame can be stacked up and down, is used to gather the heat in the interior of meal box frame and exert the heat preservation effect on the meal box frame above;
[0009] Limiting strip is located at the upper end outside of flap, is used to butt joint the positioning groove in the inner side of support frame and fix adjacent meal box frame, the limiting strip is also used to scrape the water drop on the bottom of bottom plate, the interior of meal box frame is equipped with baffle adjacent to upper end position, is used to form hollow cavity in upper end area and collect water drop to prevent splashing outward.
[0010] Further, the flap is located in the inner circle area of meal box frame outer layer board, so that the space between the outer wall of meal box frame and the outer wall of flap is formed to butt joint support frame.
[0011] Further, the flap is located in the inner circle area of meal box frame outer layer board, so that the space between the outer wall of meal box frame and the outer wall of flap is formed to butt joint support frame.
[0012] Further, the limiting strip is outwardly protruding by using its elasticity to automatically butt joint positioning groove and form clamping.
[0013] Furthermore, the folding plate is recessed downward between the top of the inner plate of the lunchbox holder, and a guide slope is provided above the limiting strip on the side adjacent to the inside of the lunchbox holder to collect water droplets scraped off by the limiting strip into the recessed area.
[0014] Furthermore, the inner panel of the food container rack, combined with the folding plate and recessed area, is also used to scrape the oil and water from the food to control oil and water intake.
[0015] Furthermore, a permeable plate is provided between the top of the lunchbox holder and the folding plate to absorb water droplets and collect them in the hollow cavity.
[0016] Furthermore, the way the lunchbox lid closes is the same as the way the adjacent lunchbox rack is assembled, and it has the same effect of removing water droplets.
[0017] This utility model has the following beneficial effects:
[0018] This invention utilizes a double-layered structure for the lunchbox holder, which interlocks with the support frame, allowing multiple lunchbox holders to be stacked together. In this way, the upward transfer of heat does not result in direct outward loss but rather creates an insulation effect, preventing the food inside each lunchbox holder from losing heat too quickly and ensuring the preservation of the food's flavor. This also reduces the frequency of use of the lunchbox lid, significantly lowering the cost of use.
[0019] This utility model utilizes the recessed structure of the folding plate combined with the scraping of the bottom of the base plate by the limiting strip. This allows water droplets accumulated on the bottom of the base plate to be scraped off directly after opening, and then stored through the permeable plate and partition. This not only prevents water droplets from splashing and wetting clothes or tabletops, but also protects the support frame from food oil stains and water droplets, allowing it to be placed directly on the table for use.
[0020] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description
[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0022] Figure 1 This is a schematic diagram of the external structure of the lunch box of this utility model;
[0023] Figure 2 This is a schematic diagram of the appearance structure of multiple lunch boxes combined according to this utility model;
[0024] Figure 3This is a schematic diagram of the internal structure of a combination of multiple lunch boxes according to this utility model;
[0025] Figure 4 This is a schematic diagram of the structure of the connecting part between adjacent lunch boxes of this utility model;
[0026] Figure 5 This is a partially enlarged structural diagram of part A of this utility model;
[0027] Figure 6 This is a schematic diagram of the structure of the lunch box of this utility model in the state of scraping water droplets;
[0028] The attached diagram lists the components represented by each number as follows:
[0029] In the diagram: 1. Lunchbox holder; 2. Base plate; 3. Lunchbox lid; 4. Support frame; 5. Folding plate; 6. Hollow cavity; 7. Partition; 8. Limiting strip; 9. Positioning groove; 10. Guide slope; 11. Permeable plate. Detailed Implementation
[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.
[0031] In the description of this utility model, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around" and other terms indicating orientation or positional relationship are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0032] Please see Figures 1-6 As shown, this utility model is a multi-layer heat-insulating biodegradable lunch box, including a lunch box frame 1, a bottom plate 2 at the bottom, and a lunch box lid 3 at the top;
[0033] The support frame 4 is located at the bottom outer ring of the lunch box rack 1. It is used to connect with the folding plate 5 above the lunch box rack 1 so that adjacent lunch box racks 1 can be stacked one on top of the other. It is used to gather the heat inside the lunch box rack 1 to apply a heat preservation effect to the lunch box rack 1 above.
[0034] The limiting strip 8 is located on the upper outer side of the folding plate 5 and is used to fix the adjacent lunch box rack 1 by connecting the positioning groove 9 on the inner side of the support frame 4. The limiting strip 8 is also used to scrape off the water droplets at the bottom of the base plate 2. The interior of the lunch box rack 1 is provided with a partition 7 near the upper position to form a hollow cavity 6 in the upper area to collect water droplets and prevent them from splashing outwards.
[0035] This embodiment provides a multi-layer heat-insulating biodegradable lunch box that can extend the heat preservation time. The stacked lunch boxes can gather the rising hot air and effectively prevent it from escaping outward, thus extending the heat preservation time of the food. Furthermore, the limiting strip 8 scrapes off the water droplets formed by the hot air and collects them in the hollow cavity 6, which can effectively prevent water droplets from splashing outward, so that the stacked lunch boxes can still be placed directly on the table for use.
[0036] Among them, the folding plate 5 is located in the inner circle area of the outer layer of the lunch box rack 1, forming a concave structure, thereby creating a surrounding space between the outer wall of the lunch box rack 1 and the outer wall of the folding plate 5, which can connect with the support frame 4 and make its outer wall flush with the outer wall of the outer plate of the lunch box rack 1.
[0037] Among them, the limiting strip 8 protrudes outward using its own elasticity. When adjacent lunch boxes are combined, the downward pressure of the support frame 4 first presses against the limiting strip 8, causing it to deform inward. Then, when the support frame 4 moves to the predetermined position, the limiting strip 8 automatically resets to achieve the effect of automatically engaging the positioning groove 9.
[0038] Among them, the folding plate 5 is recessed downward between the top of the inner plate of the lunch box rack 1, and a guide slope 10 is provided above the limiting strip 8 on the side adjacent to the inside of the lunch box rack 1. After the limiting strip 8 scrapes off the water droplets, it forms a guide, causing the recessed area to slide and accumulate, which can effectively prevent the water droplets from splashing outward. Furthermore, by alternating left and right tilting, it can also scrape water from the dead corner areas at both ends of the bottom of the base plate 2.
[0039] The inner panel of the lunchbox holder 1 is combined with the folding plate 5 and the recessed area. Foods with a lot of oil can be placed directly on the recessed area. The oil can be allowed to fall into the recessed area by either leaving it still or by pulling and scraping it outwards, thus controlling the intake of oil.
[0040] Among them, a permeable plate 11 is provided between the top of the lunch box holder 1 and the folding plate 5, which is used to absorb water droplets and make them gather in the hollow cavity 6 to prevent excessive water from accumulating and overflowing.
[0041] The lid 3 of the lunchbox has the same closing method as the adjacent lunchbox holder 1, and has the same water droplet removal effect.
[0042] Understandably, this invention allows multiple lunch boxes to be stacked on top of each other to achieve multi-layer heat insulation and heat preservation. It also allows water droplets at the bottom to be scraped out and collected in time after opening, effectively preventing water droplets from wetting clothes and tabletops.
[0043] A specific application of the operation process of this embodiment is as follows: When in use, firstly, the adjacent lunch box racks 1 are stacked one on top of the other by using the locking strip 8 and the positioning groove 9. At this time, the support frame 4 is fitted on the outside of the folding plate 5 to prevent the food inside the lower lunch box rack 1 from getting dirty. In this way, the upward steam can be used to keep the upper lunch box rack 1 warm, so that the food can be kept warm for a longer time, which is convenient for going out and delivery. When opening the combined lunch box rack 1, the upper lunch box rack 1 is tilted slightly so that the bottom surface of the bottom plate 2 can be scraped by the limiting strip 8. The water droplets that are collected are guided by the guide slope 10 to the permeation plate 11 and finally collected inside the hollow cavity 6. This not only prevents water droplets from splashing and wetting the table and clothes when the lid is opened, but also prevents the oil and water attached to the food from splashing outwards, so that the upper lunch box rack 1 can be placed directly on the table for use after being removed.
[0044] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0045] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.
Claims
1. A multi-layered heat-insulating biodegradable lunch box, comprising a lunch box frame (1), a bottom plate (2) at its bottom, and a lunch box lid (3) at its top, characterized in that: The support frame (4) is located at the bottom outer ring of the lunch box rack (1) and is used to connect with the folding plate (5) above the lunch box rack (1) so that adjacent lunch box racks (1) can be stacked up and down. It is used to gather the heat inside the lunch box rack (1) to apply a heat preservation effect to the lunch box rack (1) above. The limiting strip (8) is located on the upper outer side of the folding plate (5) and is used to fix the adjacent lunch box rack (1) by connecting the positioning groove (9) on the inner side of the support frame (4). The limiting strip (8) is also used to scrape off the water droplets at the bottom of the base plate (2). The lunch box rack (1) is provided with a partition (7) near the upper position inside, which is used to form a hollow cavity (6) in the upper area to collect water droplets and prevent them from splashing outward.
2. The multi-layer heat-insulating biodegradable lunch box according to claim 1, characterized in that: The folding plate (5) is located in the inner ring area of the outer layer of the lunchbox rack (1), so that a spatial docking support frame (4) is formed between the outer wall of the lunchbox rack (1) and the outer wall of the folding plate (5).
3. The multi-layer heat-insulating biodegradable lunch box according to claim 1, characterized in that: The limiting strip (8) uses its own elasticity to protrude outward for automatic docking with the positioning groove (9) to form a snap-fit.
4. A multi-layer heat-insulating biodegradable lunch box according to claim 1, characterized in that: The folding plate (5) is recessed downward between the top of the inner plate of the lunch box holder (1), and a guide slope (10) is provided above the limiting strip (8) on the side adjacent to the inside of the lunch box holder (1) to collect water droplets scraped off by the limiting strip (8) into the recessed area.
5. A multi-layer heat-insulating biodegradable lunch box according to claim 1, characterized in that: The inner panel of the lunchbox holder (1) is combined with a folding plate (5) and a recessed area, which is also used to scrape the oil and water in the food to control the intake of oil and water.
6. A multi-layer heat-insulating biodegradable lunch box according to claim 1, characterized in that: A permeable plate (11) is provided between the top of the lunchbox holder (1) and the folding plate (5) for absorbing water droplets and causing them to gather in the hollow cavity (6).
7. A multi-layer heat-insulating biodegradable lunch box according to claim 1, characterized in that: The closing method of the lunch box lid (3) is the same as that of the adjacent lunch box rack (1), and it has the same water droplet removal effect.