Self-heating packaging bag capable of preventing accidental heating

Abstract

The utility model discloses a self-heating packaging bag capable of preventing accidental heating, and belongs to the technical field of instant food packaging. According to the self-heating packaging bag, the protection ring is arranged, the solvent bag is arranged in the middle of the protection ring, and the width of the protection ring is larger than the length of the maximum space diagonal line of the solvent bag, so that in the normal transportation and storage process, when the self-heating packaging bag is extruded, external pressure is borne by the protection ring, and the solvent bag is not damaged. Therefore, the solvent bag located in the middle of the protection ring is prevented from being damaged due to extrusion of external force, and it is guaranteed that the self-heating packaging bag is heated only when a consumer needs to heat the self-heating packaging bag.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of self-heating packaging bag that can prevent accidental heating, belong to instant food packaging technical field. BACKGROUND

[0002] With the intensification of globalization and market economy, people's life rhythm is accelerating, and instant food packaging products occupy more market, such as self-heating rice, self-heating hot pot, etc. Traditional Chinese medicine market is also not spared. At present, most people do not spend time boiling after buying traditional Chinese medicine, but entrust pharmacy or special traditional Chinese medicine processing agency to boil. The boiled traditional Chinese medicine is packaged into liquid packaging bag according to dosage, and the consumer only needs to heat when taking.

[0003] However, the heating of such liquid packaging bag is not convenient. The usual heating method is to heat the whole liquid packaging bag in hot water, but this method needs hot water and a container to carry. Consumers are not convenient when they are out. The inventor has developed a packaging bag with heating function (see Chinese invention patent with publication number CN117401289A) to heat the liquid product by setting a heating bag inside the product packaging bag. The heating bag stores a heating agent. In addition, a solvent bag connected with the heating bag is provided. When heating is needed, the solvent bag is broken by external force, and then the liquid solvent in the solvent bag flows into the heating bag and contacts with the heating agent, so as to realize the heating of the liquid product by exothermic reaction.

[0004] The above-mentioned packaging bag with heating function realizes self-heating by breaking the internal solvent bag by external force. Therefore, the solvent bag may be broken due to accidental extrusion during actual transportation and storage. Once the solvent contacts with the heating agent, the reaction will occur immediately, and the subsequent heating cannot be used. UTILITY MODEL CONTENT

[0005] In order to solve the above problems, the utility model optimizes the scheme provided in the Chinese invention patent with publication number CN117401289A, and provides a self-heating packaging bag that can prevent accidental heating. The self-heating packaging bag includes a first packaging bag 1 and a second packaging bag 2, wherein the second packaging bag 2 is inside the first packaging bag 1. The inside of the first packaging bag 1 and the outside of the second packaging bag 2 are for packaging liquid products. The second packaging bag 2 contains a heating agent 5, a solvent bag 3 and a protective ring 4. The solvent bag 3 is in the middle of the protective ring 4, and the width d of the protective ring 4 is greater than the maximum space diagonal length of the solvent bag 3.

[0006] In one embodiment, the solvent bag 3 and the protective ring 4 are glued and fixed on the inner wall of the second packaging bag 2, and the solvent bag 3 is always in the middle of the protective ring 4 by the fixed position.

[0007] In one embodiment, the diameter of the protective ring 4 is greater than its width, and the thickness of the second packaging bag 2 is set to be only capable of allowing the protective ring 4 to move in the diameter direction and unable to rotate, so that the solvent bag 3 is always in the middle of the protective ring 4.

[0008] In one embodiment, the protective ring 4 includes an upper portion 41 and a lower portion 42, and the solvent bag 3 is provided with an edge portion 31, and the upper portion 41 and the lower portion 42 of the protective ring 4 are formed in an integrated manner by clamping the edge portion 31 of the solvent bag 3 in the middle of the protective ring 4.

[0009] In one embodiment, the upper portion 41 and the lower portion 42 of the protective ring 4 are formed in an integrated manner by clamping the upper portion 41 and the lower portion 42 of the protective ring 4 in the middle of the protective ring 4.

[0010] In one embodiment, the heating agent 5 is calcium oxide powder or iron powder, and the solvent in the solvent bag 3 is water.

[0011] In one embodiment, the heating agent 5 is directly placed in the second packaging bag 2, or is placed in the second packaging bag 2 after being packaged by using a material with a through hole.

[0012] In one embodiment, the protective ring 4 is circular or polygonal.

[0013] The utility model discloses the advantages of the self-heating packaging bag of preventing accidental heating:

[0014] The self-heating packaging bag provided by the utility model can prevent accidental heating, the solvent bag is arranged in the middle of the protective ring by arranging the protective ring, and because the width of the protective ring is greater than the maximum space diagonal length of the solvent bag, when the self-heating packaging bag is extruded in the normal transportation and storage process, the external pressure is borne by the protective ring, so that the solvent bag in the middle of the protective ring is prevented from being damaged by external extrusion, and it is ensured that the self-heating packaging bag is heated only when the consumer needs to heat. DRAWINGS

[0015] Figure 1 It is a kind of self-heating packaging bag of preventing accidental heating whole schematic view;

[0016] Figure 2 It is the schematic diagram of the protective ring of upper and lower structure;

[0017] Figure 3 It is the schematic diagram of the upper portion of the protective ring of upper and lower structure;

[0018] Figure 4This is a schematic diagram of the lower part of the protective ring in the upper and lower structure.

[0019] Figure 5 This is a schematic diagram showing the solvent pack being snapped and fixed in the middle of the protective ring;

[0020] Wherein 1-first packaging bag, 2-second packaging bag, 3-solvent pack, 31-edge of solvent pack, 4-protective ring, 41-upper part of protective ring, 42-lower part of protective ring, 43-notch, 5-heating agent. Detailed Implementation

[0021] The following is a detailed description of this utility model.

[0022] Example 1

[0023] like Figure 1 As shown, this utility model provides a self-heating packaging bag that can prevent accidental heating, including a first packaging bag 1 and a second packaging bag 2, wherein the second packaging bag 2 is located inside the first packaging bag 1; the liquid product packaged in the self-heating packaging bag is located inside the first packaging bag 1 and outside the second packaging bag 2; the second packaging bag 2 contains a heating agent 5, a solvent pack 3 and a protective ring 4, the solvent pack 3 is located in the middle of the protective ring 4, and the width d of the protective ring 4 is greater than the maximum diagonal length of the solvent pack 3.

[0024] To ensure that the solvent pack 3 is always in the center of the protective ring 4, in the first implementation, the solvent pack 3 and the protective ring 4 are glued and fixed to the inner wall of the second packaging bag 2, so that the solvent pack 3 is always in the center of the protective ring 4 by fixing its position; in the second implementation, the diameter of the protective ring 4 is larger than its width, and the thickness of the second packaging bag 2 is set to a size that allows the protective ring 4 to move only along the diameter direction and not rotate, so that the solvent pack 3 is always in the center of the protective ring 4; in the third implementation, the protective ring 4 is composed of upper and lower parts, the solvent pack 3 has an edge part 31, and the upper part 41 and the lower part 42 of the protective ring 4 are fixed in the center of the protective ring 4 by snapping the edge part 31 of the solvent pack 3 together.

[0025] To facilitate the outflow of solvent from the solvent pack 3 located in the middle of the protective ring 4 after the solvent pack 3 is ruptured, the solvent pack 3 is made of plastic film, and several notches 43 are provided at the upper and lower edges of the protective ring 4 to increase the solvent outflow channels.

[0026] like Figures 2-4 As shown, in the third implementation described above, the protective ring 4 includes an upper part 41 and a lower part 42, as follows: Figure 3 As shown, the upper part 41 is provided with a boss, and the lower part 42 is provided with a corresponding recess, such as... Figure 4As shown, the edge part 31 of the solvent bag 3 can adopt a plastic film with a thickness of 0.1 mm, and the solvent bag 3 with the edge part 31 is clamped between the convex and the concave, so that the solvent bag 3 is always fixed in the middle of the protective ring 4, as shown in Figure 5 As shown Figure 5 In the embodiment, the upper part 41 and the lower part 42 after clamping are integrated.

[0027] In one implementation, the main component of the heating agent is calcium oxide powder, and the main component of the solvent is water. The combination of the heating agent and the solvent generates a large amount of heat, thereby realizing automatic heating of the liquid product in the first packaging bag 1. Considering that the exothermic process will generate a certain amount of gas, when the liquid product is placed in the first packaging bag 1 and the heating agent 5, the solvent bag 3 and the protective ring 4 are placed in the second packaging bag 2, a certain amount of redundancy is provided in the internal space to prevent the first packaging bag 1 and the second packaging bag 2 from being cracked after the reaction occurs.

[0028] In another implementation, the main component of the heating agent is iron powder, and the main component of the solvent is water. The combination of the heating agent and the solvent generates a large amount of heat, thereby realizing automatic heating of the liquid product in the first packaging bag 1. Similarly, when the liquid product is placed in the first packaging bag 1 and the heating agent 5, the solvent bag 3 and the protective ring 4 are placed in the second packaging bag 2, a certain amount of redundancy is provided in the internal space to prevent the first packaging bag 1 and the second packaging bag 2 from being cracked after the reaction occurs.

[0029] As shown Figure 5 Because the width of the protective ring 4 is greater than the maximum space diagonal length of the solvent bag 3, during normal transportation and storage, when the self-heating packaging bag is extruded, the external pressure is borne by the protective ring 4, thereby avoiding that the solvent bag 3 in the middle of the protective ring 4 is extruded by external force. When it is necessary to heat the liquid product in the first packaging bag 1, the consumer can accurately pinch the solvent bag 3 with the index finger and the thumb to make it break under the action of external force. After the solvent bag 3 breaks, the solvent inside flows out and contacts the heating agent 5 inside the second packaging bag 2 to generate an exothermic reaction, thereby realizing automatic heating of the liquid product in the first packaging bag 1. The production enterprise of the self-heating packaging bag can determine the amount of heating agent 5 and solvent according to the volume of the first packaging bag 1, and then reasonably set the size of the second packaging bag 2.

[0030] The heating agent 5 can be directly placed in the second packaging bag 2, or can be packaged with a material with a through hole (such as non-woven fabric) and then placed in the second packaging bag 2, and the utility model does not limit it, Figure 1 In the embodiment, the square pattern of the heating agent 5 is only used for illustration.

[0031] The production enterprise of the self-heating packaging bag can reasonably select the material of the first packaging bag 1 and the second packaging bag 2 according to the classification of the liquid to be contained, for example, if used for food and beverage packaging, the whole process needs to be in a sterile environment and relevant food safety inspection is needed. If used for packaging traditional Chinese medicine, whether it will affect the nature of traditional Chinese medicine needs to be considered. If used for packaging some chemical products, cosmetics or skin care products, the relative environmental conditions can be adjusted accordingly.

[0032] The working principle of the utility model is:

[0033] When the liquid product in the first packaging bag 1 needs to be heated, the consumer can accurately pinch the solvent bag 3 with the index finger and the thumb to make it break under the action of external force. After the solvent bag 3 breaks, the solvent inside flows out and contacts the heating agent 5 inside the second packaging bag 2 to generate an exothermic reaction, realizing automatic heating of the liquid product in the first packaging bag 1.

[0034] Although the utility model has disclosed as above with preferable embodiments, it is not used to limit the utility model, anyone familiar with this technology can make various changes and modifications without departing from the spirit and scope of the utility model, therefore the protection scope of the utility model should be limited by the claims.

Claims

1. A self-heating packaging bag that prevents accidental heating, characterized in that, The self-heating packaging bag that prevents accidental heating includes a first packaging bag (1) and a second packaging bag (2), wherein the second packaging bag (2) is located inside the first packaging bag (1); the liquid product packaged in the self-heating packaging bag is located inside the first packaging bag (1) and outside the second packaging bag (2); the second packaging bag (2) is provided with a heating agent (5), a solvent pack (3) and a protective ring (4), wherein the solvent pack (3) is located in the middle of the protective ring (4), and the width d of the protective ring (4) is greater than the maximum diagonal length of the solvent pack (3).

2. The self-heating packaging bag that prevents accidental heating according to claim 1, characterized in that, The solvent pack (3) and the protective ring (4) are glued and fixed to the inner wall of the second packaging bag (2), so that the solvent pack (3) is always in the middle of the protective ring (4) by fixing its position.

3. The self-heating packaging bag that prevents accidental heating according to claim 1, characterized in that, The diameter of the protective ring (4) is greater than its width d. The thickness of the second packaging bag (2) after it is opened is set to a size that allows the protective ring (4) to move along the diameter direction but cannot rotate, so that the solvent pack (3) is always in the middle of the protective ring (4).

4. The self-heating packaging bag that prevents accidental heating according to claim 1, characterized in that, The protective ring (4) includes an upper part (41) and a lower part (42), and the solvent pack (3) is provided with an edge part (31); the upper part (41) and the lower part (42) are connected by a boss and concave platform to form an integral unit, and the solvent pack (3) is always in the middle of the protective ring (4) by engaging the edge part (31) of the solvent pack (3) between the boss and concave platforms.

5. The self-heating packaging bag that prevents accidental heating according to claim 1, characterized in that, The heating agent (5) is calcium oxide powder or iron powder, and the solvent in the solvent package (3) is water.

6. The self-heating packaging bag that prevents accidental heating according to claim 1, characterized in that, The heating agent (5) is placed directly in the second packaging bag (2), or it is packaged in a material with through holes and then placed in the second packaging bag (2).

7. The self-heating packaging bag that prevents accidental heating according to claim 1, characterized in that, The protective ring (4) is circular or polygonal.

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