A 3D bean curd box easy to demold
Patent Information
- Application Number
- CN202522201331.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-17
- Publication Date
- 2026-08-18
- Estimated Expiration
- 2035-10-17
AI Technical Summary
缺少一种专门且方便操作的包装盒,来满足装饰、美观、实用的新型包装盒需要
[0012] The beneficial effects of this utility model are as follows: The 3D tofu box provided by this utility model is easy to demold and has multiple functions and is convenient to use. The pressure relief and air intake methods can be selected through the shape, which is conducive to the natural falling of food by increasing the pressure inside the box. Different ingredients can also be packaged according to needs. The structure is stable and reliable and meets the requirements.
Smart Images

Figure CN224645612U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a food packaging box, and more particularly to a 3D tofu box that is easy to demold. Background Technology
[0002] Packaging boxes come in various forms to meet the needs of diverse foods, with some foods having even higher requirements. For example, foods like tofu and pudding don't have extra space reserved during production, creating a negative pressure when removed, hindering retrieval. There is a lack of a specialized and easy-to-use packaging box that meets the need for a new type of packaging that is decorative, aesthetically pleasing, and practical. Utility Model Content
[0003] To address the shortcomings of existing technologies, this invention provides an easy-to-demold 3D tofu box.
[0004] To achieve the above objectives, the technical solution adopted by this utility model is: an easy-to-demold 3D tofu box, including a box body, an inner lid and a sealing surface, wherein a compartment is formed between the sealing surface and the box body, the box body has a pressure-relieving part at the bottom for pressing or tearing, the bottom of the box body is also provided with a rim arranged along the outer edge, the rim protruding in the height direction, and the top of the box body is provided with a flange arranged along the outer edge.
[0005] Preferably, the box body has a 3D shaped part inside the compartment, and the inner cover has a corresponding shaped part. The 3D shaped part can be various shapes such as flowers, birds, or anime characters.
[0006] Preferably, the bottom surface of the box body is provided with an opening, the pressure relief part covers the opening, and the pressure relief part is provided with a pull head for tearing or a pressure relief port for pressing.
[0007] Preferably, the pressure-relieving part is a heat-sealing film.
[0008] Preferably, the pressure relief part is integrally connected to the box body by injection molding, and the pressure relief part is formed by pressing it into the chamber to form a pressure relief port.
[0009] Preferably, the pressure relief section has a convex circular structure, and the pressure relief section is also provided with an air inlet groove.
[0010] Preferably, the surrounding edge is a segmented structure or a continuous structure.
[0011] Preferably, there are two or more pressure relief sections at the bottom of the box.
[0012] The beneficial effects of this utility model are as follows: The 3D tofu box provided by this utility model is easy to demold and has multiple functions and is convenient to use. The pressure relief and air intake methods can be selected through the shape, which is conducive to the natural falling of food by increasing the pressure inside the box. Different ingredients can also be packaged according to needs. The structure is stable and reliable and meets the requirements. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention;
[0014] Figure 2 This is a schematic diagram of the bottom structure of Embodiment 2 of this utility model;
[0015] Figure 3 This is a schematic diagram of the bottom structure of Embodiment 3 of this utility model;
[0016] Figure 4 This is a schematic diagram of the bottom structure of Embodiment 4 of this utility model. Detailed Implementation
[0017] Example 1: As Figure 1 As shown, an easy-to-demold 3D tofu box includes a box body 2, an inner lid 1, and a sealing surface 3. A chamber 4 is formed between the sealing surface 3 and the box body 2. The box body 2 has a pressure-relieving part 5 at the bottom for pressing or tearing. The bottom of the box body 2 also has a rim 6 arranged along the outer edge, which protrudes in the height direction. The top of the box body 2 has a flange 7 arranged along the outer edge. The flange 7 is provided for the inner lid to be engaged, for the sealing surface 3 to be closed, or for other purposes. In this embodiment, it is mainly used for heat sealing of the sealing surface 3. The sealing surface 3 is usually a thin film, which is fixed by heat sealing. It will not be elaborated or limited here. In this embodiment, the pressure-relieving part 5 mainly functions to open the opening, which allows air to enter and replenish the air pressure, thereby balancing the pressure and making it easier for the food to fall out when inverted. The rim 6 is provided to raise the height, which not only protects the pressure-relieving part 5 but also enhances the local structural strength and prevents damage from bumps. The flange 7 facilitates locking and fixing, and is easy to assemble and disassemble, meeting design requirements. The inner cover 1 is snapped into the box body 2, and the inner cover itself has various three-dimensional shapes to adapt to the shape of food. This makes the shape more complete and meets design needs. The sealing surface 3 is set on the outer surface, sealing the inner cover 1 inside the box body 2. The pressure relief part 5 can be set as needed, and will not be elaborated or limited here. The box body 2 has a 3D three-dimensional shaping part in the compartment 4. In this embodiment, a special shape is used to make the packaged food more visually appealing. The style of the shaping part can be flowers, birds, anime, etc., without too many restrictions.
[0018] Example 2: Different from Example 1, such as Figure 2As shown, the bottom surface of the box 2 has an opening, which is covered by the pressure relief part 5, and the pressure relief part 5 is provided with a tear-out pull head 8. Special shapes may be limited by their shape, resulting in natural resistance when sliding out, and the air intake may be insufficient and cause lag when falling out quickly. Therefore, the pressure relief part 5 can be torn open enough openings as needed. The pressure relief part 5 is a heat-sealing film, which is adhered and fixed to the bottom of the box 2, generally using aluminum foil, film, or other materials, and fixed by hot stamping or adhesive. The inner lid is also designed, allowing it to be sealed before or after closing. The surrounding edge 6 can be a segmented or continuous structure; either can be used as long as the design and usage requirements are met. In this embodiment, it is arranged along a circular path.
[0019] Example 3: Unlike Examples 1 and 2, such as Figure 3 As shown, the pressure relief part 5 is integrally connected to the box body 2. The pressure relief part 5 forms a pressure relief port by pressing it into the compartment. The pressure relief part 5 has a convex circular structure and is also provided with an air inlet groove 9. The convex circular structure facilitates pressing down and extrusion to deform and crack inward, forming a notch. The design of the air inlet groove 9 is conducive to forming a pressure relief port at the air inlet groove 9. Generally, multiple grooves are set in multiple directions to ensure smooth use. The design of the air inlet groove 9 can be through and narrow as needed, or it can have a large depth but not through.
[0020] Example 4: Different from Examples 1, 2, and 3, such as Figure 4 As shown, the perimeter 6 has a segmented structure, serving both support and protection; its details and limitations will not be elaborated upon here. Three pressure relief sections 5 are provided. For boxes with complex 3D shapes, one or more release ports can be provided to improve demolding efficiency; three are used as an example in this embodiment. More extensive 3D shapes can also be designed as needed. In addition to the above, a separate component can be provided at the required location for simple release; this could be a one-way valve or other parts, which will not be elaborated upon or limited here.
[0021] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," 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 device or element 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. At the same time, the basic principles, main features, and advantages of this utility model have been shown and described above, which should be understood by those skilled in the art.
Claims
1. A 3D tofu box that is easy to demold, characterized in that, The box includes a box body, an inner lid, and a sealing surface. A compartment is formed between the sealing surface and the box body. The box body has a pressure-relieving part at the bottom that can be pressed or torn. The bottom of the box body is also provided with a rim arranged along the outer edge, which protrudes in the height direction. The top of the box body is provided with a flange arranged along the outer edge.
2. The easily demolded 3D tofu box as described in claim 1, characterized in that, The box body has a 3D shaped part inside the compartment, and the inner cover has a shaped part corresponding to the shaped part.
3. The easily demolded 3D tofu box as described in claim 2, characterized in that, The bottom surface of the box is provided with an opening, the pressure relief part covers the opening, and the pressure relief part is provided with a pull head for tearing or a pressure relief port for pressing.
4. The easily demolded 3D tofu box as described in claim 3, characterized in that, The pressure relief section is a heat-sealing film.
5. The easily demolded 3D tofu box as described in claim 1, characterized in that, The pressure relief section is integrally connected to the box body by injection molding, and the pressure relief section is formed by pressing it into the chamber to form a pressure relief port.
6. The easily demolded 3D tofu box as described in claim 5, characterized in that, The pressure relief section has a convex circular structure and is also provided with an air inlet groove.
7. The easily demolded 3D tofu box as described in claim 1, characterized in that, The surrounding edge can be a segmented structure or a continuous structure.
8. The easily demolded 3D tofu box as described in claim 1, characterized in that, The pressure relief section has two or more parts at the bottom of the box.