Double-layered food packaging container with built-in inner tray

Abstract

To provide a two-layer food packaging container which is spill-resistant and prevents the smells of food in an inner plate and an outer container body from mixing with each other. [Solution] The two-layered food packaging container with a built-in inner plate 2 includes an outer container body 1, an inner plate fitted to the top of the outer container body, and an upper lid 3 fitted to the tops of the inner plate and the outer container body, with a flange receiving portion 11 on the outer edge of the top of the outer container body, a flange fitting portion 21 on the outer edge of the top of the inner plate, the flange fitting portion of the inner plate fitting to the outside of the flange receiving portion of the outer container body, and a straight side portion 31 on the bottom edge of the upper lid, and the inside of the straight side portion of the upper lid firmly abuts against the inside of the flange fitting portion of the inner plate. The outer container body is not only fitted to the flange fitting portion of the inner plate, but also firmly abuts against the straight side portion of the upper lid, making the attachment of the outer container body more solid and less likely to spill. Since the straight side portion of the upper lid abuts firmly against the inner plate, the attachment of the inner plate is more solid and it is less likely to separate from the upper lid.

Description

[Technical field]

[0001] The present invention relates to the technical field of food packaging containers, and in particular to a two-layer food packaging container with a built-in inner tray. [Background technology]

[0002] A double-layer food packaging container is a packaging container with a two-layer structure, where each layer can be used to serve different foods; the advantage of this design is that by separating the upper and lower layers of food, users can accommodate more food.

[0003] Over the years, two-layer food packaging containers with various functions have been developed, but these types of two-layer food packaging containers have complex structures, high manufacturing costs, and are not suitable for mass production and sales.

[0004] At present, in order to realize the opening and closing function of double-layered food packaging containers and at the same time ensure mass supply to the market at relatively low manufacturing costs, double-layered food packaging containers still adopt the following two basic structures. However, these two basic structures have some shortcomings, as follows: 1. The first basic structure, as disclosed in the Chinese Appearance Design Patent for Food Packaging Container (Reusable Combination Set) with patent document number CN307866867S, includes an outer container body, an inner plate and an upper cover, the outer container body and the inner plate are fitted together and can be separated by a simple buckle, and the inner plate and the upper cover are fitted together and can be separated by a simple buckle.

[0005] This type of two-layer food packaging container has the following shortcomings: since the outer container body is covered through the inner plate, this type of food packaging container is not applicable when the inner plate is used to carry heavy food or when the transportation conditions are unstable. Otherwise, when the inner plate is used to carry heavy food or when the road conditions are shaky, the center of gravity of the inner plate is likely to move away from the center of gravity of the outer container body, and at the same time, since the outer container body is only fitted to the inner plate, the two are not stable (the outer container body is not firmly fitted), and at this time, the inner plate and the outer container body may unexpectedly separate, or the food or juice in the outer container body may spill out.

[0006] 2. The second basic structure, as disclosed in patent document number CN216316127U and patent name of Chinese utility model of modularized set meal container, includes an upper container lid, a lower container body, a middle plate and a small bowl, of which a horizontally arranged mating flange is integrally formed around the outer edge of the upper end of the middle plate, and an upper locking part that matches the mating flange of the middle plate is integrally formed on the inside of the lower container body near the opening (as can be determined comprehensively from Figures 1, 2 and 3, the middle plate can be fitted into the inside of the lower container body through the mating flange and the upper locking part), the small bowl is mounted on the middle plate, and the upper container lid is fitted to the lower container body.

[0007] This type of two-layer food packaging container has the following shortcomings: (When food is served in the upper layer using a small bowl, the structure is complex and the manufacturing costs are high.) When food is served directly through the inner plate without using a small bowl, the inner plate is fitted into the inside of the lower container body, and the two are not stable (the inner plate is not firmly fitted). In that case, if shaking occurs during transportation, the inner plate is likely to separate from the inside of the lower container body, causing the food and juice on the inner plate to flow into the inside of the outer container body, resulting in the mixing of odors. Summary of the Invention [Means for solving the problem]

[0008] The purpose of this invention is to overcome the above-mentioned drawbacks of the prior art, to provide a two-layer food packaging container with a built-in inner tray, to reduce manufacturing costs, and to provide a design in which the flange fitting portion of the inner tray is fitted to the outside of the flange receiving portion of the outer container body, and the inner side of the straight side of the top cover is abutted against the inner side of the flange fitting portion of the inner tray.

[0009] First, the outer container body is not only fitted into the flange fitting portion of the inner plate, but is also firmly abutted against the straight side portion of the top lid, making the attachment of the outer container body stronger and less likely to cause spills.

[0010] Secondly, by fitting the inner plate and the outer container body together, it is possible to prevent the smells of the food in the inner plate and the outer container body from mixing due to the shaking during transportation, and since the straight side of the top lid has a certain length and abuts firmly against the inner plate with a certain frictional force, the attachment of the inner plate is more solid and it is less likely to separate from the top lid, and the inner plate is less likely to be turned over and spilled.

[0011] In order to achieve the above-mentioned object, the present invention provides a two-layer food packaging container with a built-in inner plate, comprising an outer container body, a inner plate fitted to the top of the outer container body, and an upper cover fitted to the tops of the inner plate and the outer container body respectively, wherein a flange receiving portion is provided on the top outer edge of the outer container body, a flange fitting portion is provided on the top outer edge of the inner plate, the flange fitting portion of the inner plate fits into the outside of the flange receiving portion of the outer container body, and a straight edge is provided on the bottom edge of the upper cover, and the inner side of the straight edge of the upper cover firmly abuts against the inner side of the flange fitting portion of the inner plate.

[0012] Preferably, the inner tray is a paper member formed by folding a folding cardboard including two folding plates arranged symmetrically with respect to each other, each of the two folding plates including a bottom plate, a side plate on one side of the bottom plate, a flange molding edge on one side of the side plate, and a first folded edge provided between two adjacent flange molding edges, a partition leg molding edge is provided between the two bottom plates, and a second folded edge is provided on both sides of the partition leg molding edge.

[0013] Preferably, two placement frames are provided within the inner tray, and a partition leg is provided between the two placement frames.

[0014] Preferably, the flange fitting portion of the inner plate is provided so as to be inclined.

[0015] Preferably, the flange fitting portion of the inner plate is provided on an arcuate side that matches the shape of the flange receiving portion of the outer container body.

[0016] Preferably, arc-shaped openings are provided around the flange fitting portions of the inner plate.

[0017] Preferably, the top edge of the upper cover is provided with stepped extension legs that connect to the straight sides.

[0018] Preferably, the bottom edge of the outer container body is provided with support legs.

[0019] Preferably, the inner side surfaces of the outer container body, the inner plate and the top lid are provided with a water-based coating.

[0020] Preferably, a placement chamber is opened in the outer container body, and the inner plate is provided on the top of the placement chamber. Effect of the Invention

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows: First, the conventional advantages of simple structure and low manufacturing cost are maintained.

[0022] Second, it includes an outer container body, the outer side of which is fitted with the flange fitting portion of the middle plate, and at the same time, the outer side of which is firmly abutted by the straight edge portion of the top lid, providing doubly stable performance. The attachment of the outer container body is more stable, and it is less likely to separate from the top lid and middle plate, and less likely to be turned over and spilled.

[0023] Third, if the inner plate is firmly fitted between the straight edge of the top cover and the flange receiving part of the outer container body, and the straight edge is long and the inside of the straight edge of the top cover firmly fits the flange fitting part of the inner plate (has a certain contact friction), the attachment of the inner plate will be more stable, and even if violent shaking occurs during transportation, the top cover will not easily separate from the inner plate, and the inner plate will not easily leak. In addition, the flange receiving part of the inner plate and the outer container body are designed to fit together, which prevents food or juice from the inner plate from flowing into the outer container body and mixing of odors. [Brief description of the drawings]

[0024] In order to more clearly describe the technical aspects of the embodiments of the present invention or the prior art, the following briefly describes the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without paying creative labor. [Figure 1] FIG. 2 is an exploded schematic view of a two-layer food packaging container with a built-in inner tray provided in Example 1 of the present invention. [Diagram 2] FIG. 2 is a schematic front cross-sectional view of a two-layer food packaging container with a built-in inner tray provided in Example 1 of the present invention. [Diagram 3] FIG. 3 is an enlarged schematic view of a portion indicated by the letter A in FIG. 2. [Figure 4] FIG. 2 is a structural schematic diagram of one angle of the double-layer food packaging container with built-in inner tray provided in Example 1 of the present invention. [Diagram 5] FIG. 2 is a structural schematic diagram of the double-layer food packaging container with built-in inner tray provided in Example 1 of the present invention from another angle. [Figure 6] FIG. 2 is a schematic plan view of the folded paperboard provided in the first embodiment of the present invention. [Figure 7] FIG. 2 is a schematic diagram showing the structure of the inner plate provided in the second embodiment of the present invention; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0025] The technical solution of this embodiment of the present invention will be described below in detail and completely with reference to the drawings of this embodiment of the present invention. Obviously, this embodiment described is only one embodiment of the present invention, and is not all of the embodiments. Based on this embodiment of the present invention, other embodiments obtained by those skilled in the art without creative labor all belong to the scope of protection of the present invention.

[0026] Example 1 Referring to Figures 1 to 6, an embodiment of the present invention provides a two-layer food packaging container with a built-in inner plate, and includes an outer container body 1, a inner plate 2 fitted to the top of the outer container body 1, and an upper cover 3 fitted to the tops of the inner plate 2 and the outer container body 1, respectively, a flange receiving portion 11 is provided on the top outer edge of the outer container body 1, a flange fitting portion 21 is provided on the top outer edge of the inner plate 2, the flange fitting portion 21 of the inner plate 2 fits into the outside of the flange receiving portion 11 of the outer container body 1, and a straight side portion 31 is provided on the bottom edge of the upper cover 3, and the inner side of the straight side portion 31 of the upper cover 3 firmly abuts against the inner side of the flange fitting portion 21 of the inner plate 2.

[0027] Two placement frames 22 are provided inside the inner tray 2, and a partition leg 23 is provided between the two placement frames 22. By providing two placement frames 22, it is easy to classify foods on the inner tray 2 and to place two different types of food on it, and the partition leg 23 separates the two placement frames 22, preventing the two foods from coming into contact and mixing their smells.

[0028] The inner plate 2 is a paper member formed by folding a folding cardboard 2a including two folding plates 21a arranged symmetrically to each other, and the two folding plates 21a each include a bottom plate 211a, a side plate 212a arranged on one side of the bottom plate 211a, a flange forming edge 213a arranged on one side of the side plate, and a first folded edge plate 214a arranged between the two adjacent flange forming edges 213a, and a partition leg forming edge plate 215a is provided between the two bottom plates 211a, and a second folded edge plate 216a is provided on both sides of the partition leg forming edge plate 215a. The inner plate 2 is formed in the form of a paper member formed by folding a folding cardboard 2a, and since the structure is complicated, there is an advantage that through folding of the cardboard, there is no need to use a paper press, which can save expensive mold costs, while making folding production easier.

[0029] The flange fitting portion 21 of the inner plate 2 is provided on an arc-shaped edge that matches the shape of the flange receiving portion 11 of the outer container body 1. Specifically, the arc-shaped edge is provided in the form of a semicircular edge that matches the shape of the flange receiving portion 11 of the outer container body 1.

[0030] The top edge of the top cover 3 is provided with stepped extension legs 32 that connect to the straight side portion 31. The outer side of the stepped extension legs 32 is provided in a stepped shape, which allows the user to smoothly abut and grip it, providing a smoother feel in the hand, and furthermore, the extension legs protruding from the top of the stepped extension legs 32 are easy for the user to grasp and are convenient for more stable gripping.

[0031] The bottom edge of the outer container body 1 is provided with support legs 13. The role of the support legs 13 at the bottom of the outer container body 1 is, firstly, to support the outer container body 1, and secondly, to make it easy for the user to grasp, so as to prevent the user from directly grabbing the bottom of the outer container body 1 and getting burned.

[0032] An aqueous coating is applied to the inner sides of the outer container body 1, the inner plate 2, and the top lid 3. The purpose of the aqueous coating is to prevent food from sticking to the inner sides of the outer container body 1, the inner plate 2, and the top lid 3.

[0033] An arrangement chamber 12 is formed in the outer container body 1, and the inner tray 2 is provided on the top of the arrangement chamber 12.

[0034] The advantages of the two-layer food packaging container with built-in inner plate in Example 1 of the present invention are not only low manufacturing costs, but also greatly improved fitting strength between the inner plate 2 and the outer container body 1, greatly improved installation stability, and the gaps between the inner plate 2, the outer container body 1, and between the inner plate 2 and the outer container body 1 are difficult to open and difficult to spill.

[0035] Example 2 The only difference between this embodiment 2 and this embodiment 1 is that while the flange fitting portion 21 of the inner plate 2 of this embodiment 1 is formed as an arc-shaped edge that matches the shape of the flange receiving portion of the outer container body 1, the flange fitting portion 21 of the inner plate 2 of this embodiment 2 is formed as an inclined edge (not shown).

[0036] Other configuration settings of the second embodiment are similar to those of the first embodiment.

[0037] Example 3 Refer to Figure 7. The only difference between this Example 3 and this Example 1 is that, in addition to Example 1, in this Example 3, in order to reduce the fitting stress and fitting accuracy requirements between the flange fitting portion 21 of the inner plate 2 and the outside of the flange receiving portion of the outer container body 1, arc-shaped openings 211 are opened around the flange fitting portion 21 of the inner plate 2, thereby avoiding the occurrence of sagging or local warping in the flange fitting portion 21 of the inner plate 2.

[0038] The above is only a preferred embodiment of the present invention, which is not used to regulate the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention. [Explanation of symbols]

[0039] 1, outer container body; 11, flange receiving portion; 12, placement chamber; 13, support leg; 2, inner plate; 21, Flange fitting portion; 22, placement frame; 23, partition leg; 3, top cover; 31, straight side portion; 32, stepped extension leg; 2a, folding cardboard; 21, folding plate; 211a, bottom plate; 212a, side plate; 213a, flange molded edge; 214a, first folded edge; 215a, partition leg molded edge; 216a, second folded edge.

Claims

1. A two-layer food packaging container with a built-in inner plate comprises an outer container body (1), an inner plate (2) fitted onto the top of the outer container body (1), and an upper lid (3) fitted onto the tops of the inner plate (2) and the outer container body (1), wherein a flange receiving portion (11) is provided on the outer edge of the top of the outer container body (1), a flange fitting portion (21) is provided on the outer edge of the top of the inner plate (2), the flange fitting portion (21) of the inner plate (2) fits onto the outside of the flange receiving portion (11) of the outer container body (1), and a straight side portion (31) is provided on the bottom edge of the upper lid (3), and the inside of the straight side portion (31) of the upper lid (3) firmly abuts against the inside of the flange fitting portion (21) of the inner plate (2).

2. A two-layer food packaging container with a built-in inner tray as described in claim 1, characterized in that two placement frames (22) are provided within the inner tray (2) and a partition leg (23) is protruding between the two placement frames (22).

3. The inner tray (2) is a paper member formed by folding a folding paperboard (2a) including two folding plates (21a) arranged symmetrically with respect to each other, and the two folding plates (21a) each include a bottom plate (211a), a side plate (212a) provided on one side of the bottom plate (211a), a flange molding edge (213a) provided on one side of the side plate, and a first folded edge (214a) provided between the two adjacent flange molding edges (213a), a partition leg molding edge (215a) is provided between the two bottom plates (211a), and a second folded edge (216a) is provided on both sides of the partition leg molding edge (215a).

4. 2. The double-layered food packaging container with a built-in inner tray according to claim 1, wherein the flange fitting portion (21) of the inner tray (2) is provided so as to be inclined.

5. A two-layer food packaging container with a built-in inner plate as described in claim 1, characterized in that the flange fitting portion (21) of the inner plate (2) is provided on an arc-shaped edge that matches the shape of the flange receiving portion (11) of the outer container body (1).

6. 2. The double-layered food packaging container with built-in inner tray according to claim 1, characterized in that arc-shaped openings (211) are provided around the flange fitting portion (21) of the inner tray (2).

7. The two-layer food packaging container with built-in inner plate according to claim 1, characterized in that the top edge of the upper cover (3) is provided with a stepped extension leg (32) connected to the straight side portion (31).

8. 2. The double-layered food packaging container with built-in inner tray according to claim 1, characterized in that the bottom edge of the outer container body (1) is provided with support legs (13).

9. A two-layer food packaging container with a built-in inner plate as described in claim 1, characterized in that the inner sides of the outer container body (1), the inner plate (2), and the top lid (3) are provided with an aqueous coating.

10. A two-layer food packaging container with a built-in inner tray as described in claim 1, characterized in that a placement chamber (12) is opened within the outer container body (1) and the inner tray (2) is provided at the top of the placement chamber (12).

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