Plant fiber molded container with easy-to-separate general step structure

Abstract

The utility model provides a plant fiber molded container with an easy-to-separate general step structure. The plant fiber molded container comprises a container main body, the easily-separated general step is positioned at the edge position of the opening of the container main body and comprises an upper step part and a lower step part which are connected from top to bottom, and the corner thickness of the upper step part is different from that of the lower step part; when two plant fiber molded containers are stacked, the lower step portion of the plant fiber molded container located above the stack abuts against the upper step portion of the plant fiber molded container located below the stack, the effect of easy separation after stacking is achieved only through the easily-separated universal step structure, and the plant fiber molded container has the advantages of being high in universality and free of directional requirement for stacking.

Description

Technical Field

[0001] This utility model relates to the field of plant fiber molding, and in particular to a plant fiber molding container with an easily separable universal step structure. Background Technology

[0002] In practical applications, existing plant fiber molded products often face a challenging problem. When these products are stacked in multiple layers, due to their inherent curved structures, the curved surfaces overlap and adhere tightly to each other. This adhesion creates a strong seal between layers, making it difficult to separate each product from the others when needed. This is particularly true for fully biodegradable plant fiber or pulp fiber molded products. Since plant fibers themselves have virtually no fluidity, the molding process involves the fibers being loosened by an intermediate water medium and then reshaped in a mold. Due to the unique nature of this molding method, a stainless steel mesh is used for vacuum suction filtration to complete the wet preform molding. This results in a pulp molded product with one rough mesh-printed surface on either the inner or outer side. This unique feature causes frictional attraction on the large rough surface when the inner and outer surfaces of the stacked products come into contact. Because of this force, the two products adhere together during use, making separation difficult.

[0003] Currently, the common method for achieving easy separation of plant fiber molded products is to construct a product structure with unevenly distributed local protrusions and rotation angles. Specifically, these products maintain a basically identical overall shape and most of their structure, but achieve easy separation after stacking by creating structural asymmetry, changing the number of local structures, adjusting the size of local structures, or even using height misalignment in certain areas. For example, CN210102531U provides a cold drink tray. This type of product designs outward-extending flanges on the top of the side panels of the tray, with multiple protrusions and / or grooves on the flanges. This allows the cold drink trays to achieve a crisscrossing stacking effect when stacked due to the different distribution of these grooves. However, this stacking method has many limitations in achieving easy separation:

[0004] From the product design stage, it is necessary to accurately plan the location, shape, and number of local protrusions, as well as the uneven distribution of rotation angles. This requires designers to have a deep and accurate understanding of the product's usage scenarios and separation requirements. In the mold design stage, due to the special nature of the product's local structure, the design and manufacturing difficulty of the mold increases significantly, requiring higher precision and complex processes to ensure that the mold can accurately replicate the fine structure of the product design. When the product is completed and put into use, such products often require users to stack them according to a specific stacking direction.

[0005] Furthermore, the products designed using this method have poor versatility. Because each product has a specific local structural design for easy separation, it is difficult to achieve universality of molds and production processes between products of different batches or for different purposes. For example, an easy-separation structure designed for a packaging product of a specific size is difficult to directly apply to products of other sizes or shapes. This not only limits the application range of the products, but also increases the company's R&D and production costs.

[0006] In summary, while existing methods for separating plant fiber molded products have solved the separation problem to some extent, these significant drawbacks have also hindered their widespread application. Summary of the Invention

[0007] The purpose of this utility model is to provide a plant fiber molded container with an easily separable universal step structure. It achieves the effect of easy separation after stacking by relying solely on the easily separable universal step structure, and has the advantages of high versatility and no directional requirements for stacking.

[0008] To achieve the above objectives, this technical solution provides a plant fiber molded container with an easily separable universal step structure, comprising: a container body, and an easily separable universal step located at the edge of the opening of the container body, wherein the easily separable universal step includes an upper step portion and a lower step portion connected from top to bottom, the corner thickness of the upper step portion being different from the corner thickness of the lower step surface; when two plant fiber molded containers are stacked, the lower step portion of the plant fiber molded container located on top of the stack abuts against the upper step portion of the plant fiber molded container located below the stack.

[0009] Compared with existing technologies, this technical solution has the following characteristics and beneficial effects:

[0010] This solution provides a plant fiber molded container with an easily separable universal step structure. Through the design of this easily separable universal step structure, it achieves stacking without directional requirements. The design of the upper and lower steps ensures that, regardless of the direction from which the containers are stacked, the lower step of the upper container always matches the upper step of the lower container. Furthermore, the step structure is relatively simple and has a certain degree of inclusiveness, not relying on complex shape precision positioning designs. Unlike some containers that require precise concave-convex fits or specific shape matching for stacking, this structure achieves basic stacking functionality simply through the mutual contact of the steps. Plant fiber molded containers of regular shapes (such as circles and squares) or slightly irregular shapes can be stacked using this step structure. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of a plant fiber molded container with an easily separable universal step structure, as provided in this solution.

[0012] Figure 2 yes Figure 1 A partial enlarged view of the easily separable universal step of the plant fiber molded container with an easily separable universal step structure.

[0013] Figure 3 This is a schematic diagram of the stacked state of a plant fiber molded container with an easily separable universal step structure, according to an embodiment of this solution.

[0014] Figure 4 yes Figure 3 An enlarged view of the easily separable universal steps of the provided plant fiber molded container when stacked.

[0015] Figure 5 This is a schematic diagram of a plant fiber molded container with an easily separable universal step structure, provided by another embodiment of this solution.

[0016] Figure 6 yes Figure 5 A partial enlarged view of the easily separable universal step of the plant fiber molded container with an easily separable universal step structure.

[0017] Figure 7 This is a schematic diagram of the stacked state of a plant fiber molded container with an easily separable universal step structure, according to an embodiment of this solution.

[0018] In the diagram: 10 - Easily separable general-purpose step, 11 - Upper step section, 111 - Upper step transition arc surface, 112 - Upper step wall surface, 113 - Upper step outer edge surface, 12 - Lower step section, 121 - Lower step transition arc surface, 1211 - Lower step transition arc surface connecting part, 1212 - Lower step transition arc surface connecting part, 122 - Lower step wall surface, 20 - Container body. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention are within the scope of protection of the present invention.

[0020] Those skilled in the art should understand that, in the disclosure of this invention, the terms "longitudinal," "lateral," "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 invention 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, the above terms should not be construed as limiting this invention.

[0021] Example 1

[0022] This solution provides a plant fiber molded container with an easily separable, universal stepped structure, including:

[0023] Container body 20;

[0024] The easily separable universal step 10 is located at the edge of the opening of the container body 20. The easily separable universal step 10 includes an upper step portion 11 and a lower step portion 12 connected from top to bottom. The corner thickness of the upper step portion 11 is different from the corner thickness of the lower step surface 12.

[0025] When two plant fiber molded containers are stacked, the lower step 12 of the plant fiber molded container on top of the stack abuts against the upper step 11 of the plant fiber molded container on the bottom of the stack.

[0026] The plant fiber molded container with an easily separable universal step structure provided by this solution can achieve the effect of not completely stacking the two plant fiber molded containers when they are stacked by staggered stacking of the easily separable universal steps, thereby making the two plant fiber molded containers with the easily separable universal step structure easy to separate.

[0027] The upper step 11 of the easily separable universal step 10 provided in the embodiment of this solution includes an upper step outer edge surface 113, an upper step transition arc surface 111, and an upper step wall surface 112 connected in sequence, wherein the upper step transition arc surface 111 is an arc surface connected to the upper step outer edge surface 113 and the upper step wall surface 112; the lower step 12 includes a lower step transition arc surface 121 and a lower step wall surface 122 connected in sequence, wherein the lower step transition arc surface 121 is an arc surface connected to the upper step wall surface 112 and the lower step wall surface 122, and the lower step wall surface 122 is connected to the container body 20, and the wall thickness of the lower step transition arc surface 121 is different from the wall thickness of the upper step wall surface 112.

[0028] When two plant fiber molded containers are stacked, the lower step transition arc surface 121 of the plant fiber molded container on top of the stack abuts against the upper step transition arc surface 111 of the plant fiber molded container on the bottom of the stack, so that the two plant fiber molded containers do not completely overlap.

[0029] More specifically, the upper step transition arc surface 111 is a transition arc surface connecting the outer edge surface 113 of the upper step and the wall surface 112 of the upper step, and the arc surface of the upper step transition arc surface 111 bulges towards the top.

[0030] The lower step transition arc surface 121 includes an upper connecting portion 1211 connected to the upper step wall surface 112 and a lower connecting portion 1212 connected to the lower step wall surface 122. The upper connecting portion 1211 and the lower connecting portion 1212 are connected and are two arc surfaces that bulge in opposite directions. The wall thickness of the lower connecting portion 1211 is different from the wall thickness of the upper step wall surface 112. The arc surface of the lower connecting portion 1212 bulges towards the top, and the arc surface of the lower connecting portion 1211 bulges towards the bottom.

[0031] Specifically, the wall thickness of the upper step transition arc surface 111 is different from the wall thickness of the connecting part 1211 on the lower step transition arc surface. The advantage of this setting is that when two plant fiber molded containers are stacked, the connecting part 1211 on the lower step transition arc surface of the plant fiber molded container located on the top of the stack will be abutted against the upper step transition arc surface 111 of the plant fiber molded container located on the bottom of the stack, so that the two plant fiber molded containers will not completely overlap.

[0032] This solution provides two embodiments of plant fiber molded containers with easily separable universal step structures, such as... Figures 1 to 4 This is a schematic diagram of the structure of a plant fiber molded container with an easily separable universal step structure according to the first embodiment. In this embodiment, the wall thickness of the upper step portion 11 is different from the wall thickness of the lower step portion 12. Therefore, when two plant fiber molded containers with easily separable universal step structures are stacked, a gap is left between the container bodies 20 of the two containers. Specifically, the wall thickness of the upper step wall 112 is different from the wall thickness of the lower step wall 122; the wall thickness of the upper step wall 112 can be greater than the wall thickness of the lower step wall 122, or the wall thickness of the upper step wall 112 can be less than the wall thickness of the lower step wall 122.

[0033] like Figure 3 and Figure 4As shown, when two easily separable universal step structure plant fiber molded containers are stacked, the inner wall of the lower step transition arc surface 121 of the plant fiber molded container with the easily separable universal step structure located on top of the stack abuts against the outer wall of the upper step transition surface 111 of the plant fiber molded container with the easily separable universal step structure located below the stack. A gap is left between the lower step wall surface 122 of the plant fiber molded container with the easily separable universal step structure located on top of the stack and the lower step wall surface 122 of the plant fiber molded container with the easily separable universal step structure located below the stack.

[0034] Specifically, the outer wall of the lower connecting part 1112 of the upper step transition arc surface abuts against the outer wall of the upper connecting part 1211 of the lower step arc surface. In other words, the outer ring size of the upper step transition arc surface 111 of the plant fiber molded container with the easily separable universal step structure located above the stack is the same as the inner ring size of the lower step transition arc surface 121 of the plant fiber molded container with the easily separable universal step structure located below the stack, thereby leaving a gap between the side walls of the two container bodies 20.

[0035] In some embodiments, the stacking height of two easily separable, universally stepped plant fiber molded containers is greater than the minimum stacking height, wherein the formula for calculating the minimum stacking height is as follows:

[0036] H = (h² + δ) / SINθ

[0037] Where h2 is the wall thickness of the lower step, δ is the gap between the container bodies when stacked, and θ is the inclination angle of the side wall of the container body.

[0038] like Figure 3 As shown, the stacking height of two easily separable general-purpose stepped plant fiber molded containers is defined as the vertical distance H between the outer edges 113 of the upper step in the stacked state, which needs to satisfy H > H1.

[0039] like Figures 5 to 7 This is a schematic diagram of the structure of a plant fiber molded container with an easily separable universal step structure according to the first embodiment. In this embodiment, the wall thickness of the upper step portion 11 is the same as the wall thickness of the lower step portion 12. At this time, when two plant fiber molded containers with easily separable universal step structures are stacked, there is no gap between the container bodies 20 of the two plant fiber molded containers with easily separable universal step structures. However, due to the setting of the easily separable universal step, the two plant fiber molded containers are not completely overlapped.

[0040] In some embodiments, the container body 20 is selected from a bowl, cup, or plate.

[0041] Those skilled in the art should understand that the technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments have been described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0042] The above embodiments are merely illustrative of several implementation methods of this application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A plant fiber molded container with an easily separable universal step structure, characterized in that, include: Container body (20); A separable universal step (10) is located at the edge of the opening of the container body (20). The separable universal step (10) includes an upper step (11) and a lower step (12) connected from top to bottom. The corner thickness of the upper step (11) is different from the corner thickness of the lower step (12). The upper step (11) includes an upper step outer edge surface (113), an upper step transition arc surface (111), and an upper step wall surface (112) connected in sequence. The upper step transition arc surface (111) is connected to the upper step outer edge surface (113). 113) and the arc surface of the upper step wall (112), the lower step part (12) includes the lower step transition arc surface (121) and the lower step wall (122) connected in sequence. The lower step transition arc surface (121) includes the lower step transition arc surface connecting part (1211) connected to the upper step wall (112) and the lower step transition arc surface connecting part (1212) connected to the lower step wall (122). The wall thickness of the lower step transition arc surface connecting part (1211) is different from the wall thickness of the upper step wall (112). When two plant fiber molded containers are stacked, the lower step (12) of the plant fiber molded container on top of the stack abuts against the upper step (11) of the plant fiber molded container below the stack. The outer circle dimension of the upper step transition arc surface (111) of the plant fiber molded container with easy-to-separate universal step structure on top of the stack is the same as the inner circle dimension of the lower step transition arc surface (121) of the plant fiber molded container with easy-to-separate universal step structure below the stack. There is a gap between the lower step wall surface (122) of the plant fiber molded container with easy-to-separate universal step structure on top of the stack and the lower step wall surface (122) of the plant fiber molded container with easy-to-separate universal step structure below the stack.

2. The plant fiber molded container with an easily separable universal step structure according to claim 1, characterized in that, The lower step transition arc surface (121) is an arc surface that connects the upper step wall surface (112) and the lower step wall surface (122), and the lower step wall surface (122) is connected to the container body (20), and the wall thickness of the lower step transition arc surface (121) is different from the wall thickness of the upper step wall surface (112).

3. The plant fiber molded container with an easily separable universal step structure according to claim 2, characterized in that, The connecting part (1211) on the lower step transition arc surface and the lower connecting part (1212) on the lower step transition arc surface are connected. The connecting part (1211) on the lower step transition arc surface and the lower connecting part (1212) on the lower step transition arc surface are two arc surfaces that bulge in opposite directions. The wall thickness of the connecting part (1211) on the lower step transition arc surface is different from the wall thickness of the upper step wall surface (112).

4. The plant fiber molded container with an easily separable universal step structure according to claim 3, characterized in that, The upper step transition arc surface (111) has an arc surface that bulges towards the top, the lower step transition arc surface (1212) has an arc surface that bulges towards the top, and the upper step transition arc surface (1211) has an arc surface that bulges towards the bottom.

5. The plant fiber molded container with an easily separable universal step structure according to claim 1, characterized in that, The wall thickness of the upper step wall (112) is greater than the wall thickness of the lower step wall (122).

6. The plant fiber molded container with an easily separable universal step structure according to claim 5, characterized in that, The stacking height of two easily separable, universally stepped plant fiber molded containers is greater than the minimum stacking height. The formula for calculating the minimum stacking height is as follows: H=(h2 + δ) / SINθ, where h2 is the wall thickness of the lower step, δ is the gap between the container bodies when stacked, and θ is the inclination angle of the side wall of the container body.

7. The plant fiber molded container with an easily separable universal step structure according to claim 6, characterized in that, The stacking height of two easily separable, universal step-structured plant fiber molded containers is defined as the vertical distance between the outer edges of the upper steps in the stacked state, and the vertical distance is greater than the minimum stacking height.

8. The plant fiber molded container with an easily separable universal step structure according to claim 2, characterized in that, The wall thickness of the upper step wall (112) is the same as the wall thickness of the lower step wall (122).

9. The plant fiber molded container with an easily separable universal step structure according to claim 1, characterized in that, The container body (20) is selected from one of the following: bowl, cup, or plate.

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