Heating bag structure for food box

Abstract

The utility model belongs to the technical field of heating bags, and provides a heating bag structure for a food box, which comprises a packaging bag main body, a lower pressing strip mounted at the top end of the packaging bag main body, a first bending plate mounted on one side of the lower pressing strip, a second bending plate mounted on one side of the first bending plate, and insulating cloth mounted on one side of the second bending plate. A reinforcing layer is arranged in the packaging bag body, and the packaging bag body is filled with heating chemical reactants. The heating bag structure for the food box is simple and reasonable in structure, novel in design, easy to operate, high in practicability and convenient to widely popularize and use.

Description

Technical Field

[0001] The utility model relates to the technical field of heating packs, in particular to a heating pack structure for a food box. Background Art

[0002] Heating packs are commonly used to package insulated food or beverages. The most common type is the heating pack for ready-to-eat meal boxes. Heating packs can quickly generate heat when needed to provide warmth or heat to food or beverages, making it convenient for users to enjoy hot meals outdoors or in environments without heating equipment such as microwave ovens.

[0003] When using a heating pack, in order to improve the heating efficiency of the heating pack, the user needs to completely submerge the heating pack in water. However, the density of the internal compounds of some current heating packs is low, and they will float on the water surface when soaked in water, making it difficult for the internal compounds to react quickly and fully, affecting the use effect.

[0004] Therefore, we have made improvements to this and proposed a heating pack structure for food boxes. Utility Model Content

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] The utility model discloses a heating pack structure for a food box, comprising a packaging bag main body, a lower pressing strip installed on the top of the packaging bag main body, a first bending plate installed on one side of the lower pressing strip, a second bending plate installed on one side of the first bending plate, an insulating cloth installed on one side of the second bending plate, a reinforcing layer provided inside the packaging bag main body, and a heating chemical reactant filled inside the packaging bag main body.

[0007] As a preferred technical solution of the present invention, the first bent plate is made of iron sheet.

[0008] As a preferred technical solution of the present invention, the second bent plate is made of iron sheet.

[0009] As a preferred technical solution of the present invention, the material of the packaging bag body is non-woven fabric.

[0010] As a preferred technical solution of the present invention, the reinforcement layer is made of cardboard.

[0011] As a preferred technical solution of the present invention, the insulating cloth is made of glass fiber.

[0012] As a preferred technical solution of the present invention, a warning mark is provided on the top of the packaging bag body.

[0013] The beneficial effects of the utility model are:

[0014] 1. The heating pack structure for the food box in the present invention cooperates with the packaging bag body, the lower pressing strip, the first bending plate, the second bending plate and the insulating cloth. It is convenient to bend the first bending plate and the second bending plate so that the first bending plate and the second bending plate can be tightly attached to the edge of the food box and the heating pack is pressed down by the lower pressing strip, so that the heating pack can always be located at the bottom of the food box, thereby improving the convenience and use effect of the heating pack.

[0015] 2. The heating pack structure for food boxes in this new invention reduces damage to the heating pack caused by squeezing during transportation through the coordinated use of the packaging bag body, the reinforcement layer and the warning label. At the same time, it can warn the user to prevent the user from tearing the heating pack open for consumption, thereby improving the safety of the heating pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and other objects, features and advantages of the present disclosure will become more apparent through a more detailed description of exemplary embodiments of the present disclosure with reference to the accompanying drawings, wherein like reference numerals generally represent like components in the exemplary embodiments of the present disclosure.

[0017] Figure 1 This is a three-dimensional schematic diagram of the heating pack structure used in the food box of the utility model;

[0018] Figure 2 This is a side view schematic diagram of the heating pack structure used in the food box of the utility model;

[0019] Figure 3 It is a side sectional schematic diagram of the internal structure of the packaging bag main body of the heating pack structure for food boxes of the present invention.

[0020] In the figure: 1. Packaging bag body; 2. Lower pressing strip; 3. First bending plate; 4. Second bending plate; 5. Insulation cloth; 6. Reinforcement layer; 7. Warning label. DETAILED DESCRIPTION

[0021] The preferred embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although preferred embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to make the present disclosure more thorough and complete, and to fully convey the scope of the present disclosure to those skilled in the art.

[0022] Example: Figure 1-3As shown, the heating pack structure for a food box of the present invention includes a packaging bag main body 1, a lower pressing strip 2 is installed on the top of the packaging bag main body 1, a first bending plate 3 is installed on one side of the lower pressing strip 2, a second bending plate 4 is installed on one side of the first bending plate 3, an insulating cloth 5 is installed on one side of the second bending plate 4, a reinforcing layer 6 is provided inside the packaging bag main body 1, and the interior of the packaging bag main body 1 is filled with heating chemical reactants.

[0023] Among them, the first bending plate 3 is made of iron sheet. Through the bending of the first bending plate 3, the first bending plate 3 can fit on the edge of the inner wall of the food box where the heating pack is placed, and be squeezed by the outer wall of the food box for placing food. Since the bottom end of the first bending plate 3 is connected to one side of the lower pressing strip 2, the limiting force provided by the first bending plate 3 to the lower pressing strip 2 is greater than the buoyancy of water on the heating pack, so that the heating pack can always be located at the bottom of the food box, and the iron sheet usually undergoes plastic deformation when bent, which means that its internal crystal structure will change, making it more difficult to restore to its original shape.

[0024] Among them, the second bending plate 4 is made of iron sheet. By bending the second bending plate 4, the second bending plate 4 can be hooked on the edge of the food box, thereby improving the stability of the heating pack. At the same time, after the user finishes the meal, if the heat of the heating pack is still high, the user can remove the second bending plate 4 and pinch the insulating cloth 5 to take the heating pack out of the food box, which is convenient for garbage classification.

[0025] Among them, the material of the packaging bag body 1 is non-woven fabric, which is generally made of polypropylene. It has sufficient strength and is tightly sealed under normal conditions. It will not break or spill powder even if it falls. The gaps in the non-woven fabric are very small, and water can pass through it smoothly, but the powder inside will not leak out, so the exothermic reaction can proceed normally and there is no need to worry about the risk of leakage.

[0026] The reinforcing layer 6 is made of cardboard, which is lightweight and relatively inexpensive, making it an ideal choice for reinforcing layer 6. Using cardboard can reduce manufacturing costs, especially in large-scale production. Cardboard can be easily cut, bent, and processed into various shapes, which provides design flexibility and can be adapted to the needs of various products.

[0027] Among them, the material of the insulating cloth 5 is glass fiber, which has good high temperature resistance, can work stably for a long time in a high temperature environment, and is not easy to melt or deform. Glass fiber is a renewable material with high environmental protection and little impact on the environment.

[0028] Among them, a warning mark 7 is provided on the top of the packaging bag body 1 to warn the user and prevent the user from tearing the heating pack for use.

[0029] Working principle: When using the heating pack, the user first takes the heating pack out of the plastic outer packaging, then puts it into the food box, and bends the first bending plate 3 so that the first bending plate 3 can fit the edge of the inner wall of the food box where the heating pack is placed, and is squeezed by the outer wall of the food box where the food is placed. Since the bottom end of the first bending plate 3 is connected to one side of the lower pressing strip 2, the limiting force provided by the first bending plate 3 to the lower pressing strip 2 is greater than the buoyancy of the water on the heating pack, so that the heating pack can always be located at the bottom of the food box, and the iron sheet usually occurs when bending. Plastic deformation means that its internal crystal structure will change, making it more difficult to return to its original shape. The second bending plate 4 is then bent so that it can hook onto the edge of the food box, thereby improving the stability of the heating pack. At the same time, after the user finishes eating, if the heat of the heating pack is still high, the user can remove the second bending plate 4 and pinch the insulating cloth 5 to take the heating pack out of the food box, making it easier to sort garbage. The packaging bag body 1 is made of non-woven fabric, which is generally made of polypropylene and has sufficient strength. Under normal conditions, the seal is tight and the bag will not break or spill powder even if it falls. The gaps in the non-woven fabric are very small and can pass water smoothly, but the powder inside will not leak out, so the exothermic reaction can proceed normally without worrying about the risk of leakage. The reinforcing layer 6 is made of cardboard, which is a lightweight and relatively inexpensive material, making it an ideal choice for the reinforcing layer 6. Especially in large-scale production, the use of cardboard can reduce manufacturing costs. Cardboard can be easily cut, bent, and processed into various shapes, which makes it flexible in design and can adapt to the needs of various products.

[0030] Those skilled in the art should understand that the above description of the embodiments of the present invention is only for the purpose of illustrative purposes only to illustrate the beneficial effects of the embodiments of the present invention, and is not intended to limit the embodiments of the present invention to any given examples.

[0031] While various embodiments of the present invention have been described above, the above description is intended to be illustrative, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A heating pack structure for a food box, comprising a packaging bag body (1), characterized in that: A lower pressing strip (2) is installed at the top of the packaging bag body (1), a first bending plate (3) is installed on one side of the lower pressing strip (2), a second bending plate (4) is installed on one side of the first bending plate (3), an insulating cloth (5) is installed on one side of the second bending plate (4), a reinforcing layer (6) is provided inside the packaging bag body (1), and the interior of the packaging bag body (1) is filled with exothermic chemical reactants.

2. The heating pack structure for food box according to claim 1, characterized in that: The first bent plate (3) is made of iron sheet.

3. The heating pack structure for food box according to claim 1, characterized in that: The second bent plate (4) is made of iron sheet.

4. The heating pack structure for food box according to claim 1, characterized in that: The packaging bag body (1) is made of non-woven fabric.

5. The heating pack structure for food box according to claim 1, characterized in that: The material of the reinforcement layer (6) is cardboard.

6. The heating pack structure for food box according to claim 1, characterized in that: The insulating cloth (5) is made of glass fiber.

7. The heating pack structure for food box according to claim 1, characterized in that: A warning mark (7) is provided at the top end of the packaging bag body (1).

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