A disposable lunch box with good heat preservation effect

Abstract

The utility model discloses a disposable lunch box with good heat preservation effect, comprising a lunch box and a lunch cover, the lunch box comprising a film layer, a PP plastic layer, a corrugated reinforcement layer, a heat preservation filling layer and a metal aluminum foil film layer, a pressure balance hole is provided in the middle of the upper outer surface of the lunch cover, the film layer is located on the inner wall of the lunch box, the metal aluminum foil film layer is located on the outer wall of the lunch box, a connecting ring is provided on the upper part of the pressure balance hole, and the lower outer surface of the connecting ring is fixedly connected to the middle of the upper outer surface of the lunch cover. The utility model discloses a disposable lunch box with good heat preservation effect, wherein the provided lunch box can improve the strength of the lunch box and improve the ability to resist deformation by means of the provided corrugated reinforcement layer, and the provided lunch box can improve the heat preservation of the lunch box by means of the provided heat preservation filling layer and the metal aluminum foil film layer, and the provided nut, the pressure balance hole and the connecting ring can facilitate the opening of the lunch cover.

Description

Technical Field

[0001] The utility model relates to the technical field of disposable lunch boxes, in particular to a disposable lunch box with good heat preservation effect. Background Art

[0002] Disposable lunch boxes can provide effective hygienic protection. They undergo strict hygienic control during the production process and are usually disposable, avoiding potential hygienic problems of sharing tableware with others. Using disposable lunch boxes can reduce the risk of cross-contamination and the spread of germs, ensuring the hygienic safety of food.

[0003] The disposable lunch boxes in the prior art have the following disadvantages when used:

[0004] 1. Poor anti-deformation ability. The disposable lunch boxes in the prior art are all single-layer or double-layer structures, lack of reinforcement structure, and weak anti-deformation ability;

[0005] 2. Poor heat preservation effect. In order to increase the heat preservation effect, the disposable lunch box in the prior art generally has a layer of metal aluminum foil film on the outer wall of the disposable lunch box, which has a certain heat preservation effect. However, there is still a lot of room for improvement.

[0006] 3. Difficult to open. After the temperature of the food inside the disposable lunch box gradually decreases, the air pressure inside the lunch box is lower than the outside air pressure, making the lid difficult to open.

[0007] For this reason, we propose a disposable lunch box with good heat preservation effect. Utility Model Content

[0008] 1. Technical issues to be resolved

[0009] In view of the deficiencies in the prior art, the utility model provides a disposable lunch box with good heat preservation effect, improved anti-deformation ability and heat preservation ability, and convenient opening of the lunch cover, which can effectively solve the problems in the background technology.

[0010] (II) Technical solution

[0011] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a disposable lunch box with good heat preservation effect, comprising a lunch box and a lunch cover, the lunch box comprising a film layer, a PP plastic layer, a corrugated reinforcement layer, a heat preservation filling layer and a metal aluminum foil film layer, a pressure equalization hole is opened in the middle of the outer surface of the upper end of the lunch cover, the film layer is located on the inner wall of the lunch box, and the metal aluminum foil film layer is located on the outer wall of the lunch box.

[0012] Preferably, a connecting ring is provided on the upper portion of the pressure equalizing hole, and the outer surface of the lower end of the connecting ring is fixedly connected to the middle portion of the outer surface of the upper end of the dining cover.

[0013] Preferably, an outer wall of the connecting ring is provided with an external thread, and a nut is threadedly connected to the outer wall of the connecting ring.

[0014] Preferably, a pull tab is fixedly mounted on one side of the outer surface of the upper end of the dining cover.

[0015] Preferably, the film layer is bonded to the inner wall of the PP plastic layer, and the corrugated reinforcement layer is fixedly installed between the outer wall of the PP plastic layer and the inner wall of the metal aluminum foil film layer.

[0016] Preferably, the thermal insulation filling layer is filled between the inner wall of the metal aluminum foil film layer and the outer wall of the PP plastic layer, and the material of the thermal insulation filling layer is mineral wool.

[0017] (III) Beneficial effects

[0018] Compared with the prior art, the utility model provides a disposable lunch box with good heat preservation effect, which has the following beneficial effects:

[0019] 1. A disposable lunch box with good heat preservation effect is provided. The lunch box is provided with a corrugated reinforcement layer, so as to improve the strength of the lunch box and improve the ability of anti-deformation.

[0020] 2. The disposable lunch box has good heat preservation effect. The heat preservation of the lunch box can be improved by setting the heat preservation filling layer and the metal aluminum foil film layer.

[0021] 3. The disposable lunch box with good heat preservation effect is convenient for opening the lunch cover through the provided nut, pressure-balancing hole and connecting ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The utility model is a schematic diagram of the overall structure of a disposable lunch box with good heat preservation effect.

[0023] Figure 2 The utility model is a structural schematic diagram of a lunch cover in a disposable lunch box with good heat preservation effect.

[0024] Figure 3 The utility model is a structural schematic diagram of a disposable lunch box with good heat preservation effect.

[0025] Figure 4 This is a top cross-sectional view of a disposable lunch box with good heat preservation effect according to the utility model.

[0026] In the figure: 1. lunch box; 2. lunch cover; 3. nut; 4. pull tab; 5. pressure balance hole; 6. connecting ring; 7. film layer; 8. PP plastic layer; 9. corrugated reinforcement layer; 10. thermal insulation filling layer; 11. metal aluminum foil film layer. DETAILED DESCRIPTION

[0027] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0028] This embodiment is a disposable lunch box with good heat preservation effect.

[0029] like Figure 1-4 As shown, the lunch box 1 includes a lunch box 1 and a lunch cover 2. The lunch box 1 includes a film layer 7, a PP plastic layer 8, a corrugated reinforcement layer 9, a heat-insulating filling layer 10 and a metal aluminum foil film layer 11. A pressure-balancing hole 5 is provided in the middle of the outer surface of the upper end of the lunch cover 2. The film layer 7 is located on the inner wall of the lunch box 1, and the metal aluminum foil film layer 11 is located on the outer wall of the lunch box 1.

[0030] A connecting ring 6 is provided on the upper part of the pressure-balancing hole 5, and the outer surface of the lower end of the connecting ring 6 is fixedly connected to the middle part of the outer surface of the upper end of the dining cover 2; an outer wall of the connecting ring 6 is provided with an external thread, and a nut 3 is threadedly connected to the outer wall of the connecting ring 6; a pull tab 4 is fixedly installed on one side of the outer surface of the upper end of the dining cover 2; the film layer 7 is bonded to the inner wall of the PP plastic layer 8, and the corrugated reinforcement layer 9 is fixedly installed between the outer wall of the PP plastic layer 8 and the inner wall of the metal aluminum foil film layer 11; the thermal insulation filling layer 10 is filled between the inner wall of the metal aluminum foil film layer 11 and the outer wall of the PP plastic layer 8, and the material of the thermal insulation filling layer 10 is mineral wool.

[0031] It should be noted that the utility model is a disposable lunch box with good heat preservation effect, which is provided with a lunch box 1, which is composed of a film layer 7, a PP plastic layer 8, a corrugated reinforcement layer 9, a heat-insulating filling layer 10 and a metal aluminum foil film layer 11. The corrugated reinforcement layer 9 can play a reinforcing role and improve the anti-deformation ability of the lunch box 1. The heat-insulating filling layer 10 is filled between the outer wall of the PP plastic layer 8 and the inner wall of the metal aluminum foil film layer 11. The material of the heat-insulating filling layer 10 is mineral wool, which can improve the heat preservation performance when combined with the metal aluminum foil film layer 11. After the temperature of the food inside the lunch box 1 is reduced, the air pressure inside the lunch box 1 is lower than the external atmospheric pressure. In order to facilitate the opening of the lunch cover 2, the nut 3 is rotated to separate the nut 3 from the connecting ring 6. Through the pressure-balancing hole 5, the air pressure inside the lunch box 1 is the same as the external air pressure, which facilitates the opening of the lunch cover 2.

[0032] It should be noted that, in this article, relational terms such as first and second (number one, number two), etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0033] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. The technicians in this industry should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A disposable lunch box with good heat preservation effect, comprising a lunch box (1) and a lunch cover (2), characterized in that: The lunch box (1) comprises a film layer (7), a PP plastic layer (8), a corrugated reinforcement layer (9), a heat-insulating filling layer (10) and a metal aluminum foil film layer (11); a pressure-balancing hole (5) is provided in the middle of the outer surface of the upper end of the lunch cover (2); the film layer (7) is located on the inner wall of the lunch box (1), and the metal aluminum foil film layer (11) is located on the outer wall of the lunch box (1).

2. A disposable lunch box with good heat preservation effect according to claim 1, characterized in that: A connecting ring (6) is provided at the upper portion of the pressure-balancing hole (5), and the outer surface of the lower end of the connecting ring (6) is fixedly connected to the middle portion of the outer surface of the upper end of the dining cover (2).

3. A disposable lunch box with good heat preservation effect according to claim 2, characterized in that: The outer wall of the connecting ring (6) is provided with an external thread, and the outer wall of the connecting ring (6) is threadedly connected with a nut (3).

4. A disposable lunch box with good heat preservation effect according to claim 3, characterized in that: A pull tab (4) is fixedly mounted on one side of the outer surface of the upper end of the dining cover (2).

5. A disposable lunch box with good heat preservation effect according to claim 4, characterized in that: The film layer (7) is bonded to the inner wall of the PP plastic layer (8), and the corrugated reinforcement layer (9) is fixedly installed between the outer wall of the PP plastic layer (8) and the inner wall of the metal aluminum foil film layer (11).

6. A disposable lunch box with good heat preservation effect according to claim 5, characterized in that: The thermal insulation filling layer (10) is filled between the inner wall of the metal aluminum foil film layer (11) and the outer wall of the PP plastic layer (8), and the material of the thermal insulation filling layer (10) is mineral wool.

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