Heating bag for self-heating food
By designing a built-in water cavity and self-heating pack in the heating bag of self-heating food, the problem of needing to manually add water in the existing technology is solved, realizing a convenient self-heating process and efficient heating effect.
Patent Information
- Application Number
- CN202520375273.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-05
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-03-05
AI Technical Summary
Existing self-heating food heating bags require users to add water themselves, which is cumbersome and inconvenient.
Design a heating bag for self-heating food with two internal cavities. One cavity is filled with water, and the other cavity contains a self-heating pack. Water flows into the self-heating pack through the tearing of the first indentation and reacts with the heating agent to generate heat, simplifying the water addition process.
The process of adding water has been simplified, improving the ease of operation and heating efficiency of the heating bag, and ensuring the stability of the heating effect.
Smart Images
Figure CN223865483U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of self-heating food, especially relates to a heating bag for self-heating food. BACKGROUND
[0002] Self-heating food is popular due to its convenience and instantaneity. Such food is usually equipped with a heating bag capable of generating heat autonomously. The existing heating bag requires the user to pour water into the heating bag for reaction with the heating agent to generate heat, and then place the heated food on the heating bag for heating. When using the heating bag, the user needs to bring water for reaction, and the user also needs to add water according to the amount of water marked in the heating bag instruction manual, which is complicated and inconvenient to use. SUMMARY
[0003] Therefore, the utility model aims at providing a heating bag for self-heating food, which has water for reaction with the heating agent and is convenient to use.
[0004] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows:
[0005] A heating bag for self-heating food, comprising a bag body and a self-heating bag arranged in the bag body.
[0006] The bag body is formed by two plastic layers, and a first indentation is formed by hot pressing between the two plastic layers, which separates the inside of the bag body into a first cavity and a second cavity.
[0007] The first cavity is filled with water, and the second cavity is provided with the self-heating bag.
[0008] The self-heating bag comprises two layers of packaging material and a heating agent, and the two layers of packaging material are edge-welded to form a filling space for filling the heating agent.
[0009] The packaging material is provided with micropores for water flow, and the heating agent can react with the water to release heat.
[0010] Further, the first indentation is in the shape of a "V", and the tip of the first indentation is arranged towards the second cavity.
[0011] Further, the self-heating bag is configured as two in the first cavity; the edge-welded sides and bottom of the two self-heating bags are connected to each other, and the edge-welded top of the two self-heating bags is connected to the two plastic layers respectively, so that the two self-heating bags are edge-welded to form a pocket structure with the bag opening towards the first cavity; the pocket structure can separate the second cavity into two parts.
[0012] Further, a one-way valve is arranged on any of the plastic layers; the one-way valve is in communication with the part of the second cavity located outside the pocket structure, and the one-way valve allows the gas and liquid in the second cavity to be discharged.
[0013] Further, two plastic sheets are formed on the opposite sides of the two plastic layers and extend towards the inside of the pocket structure; and the first indentation is located at the edge of the two plastic sheets, so that the two plastic sheets and the two plastic layers jointly form the first cavity.
[0014] Further, the heat generating agent comprises quicklime, and the packaging material comprises a non-woven fabric layer.
[0015] Further, a second indentation is formed between the two plastic layers and located at the center of the first cavity, so that the first cavity forms an annular liquid storage space; and the connection strength of the second indentation is less than that of the first indentation.
[0016] Further, the edge of the bag body is provided with a tearable structure.
[0017] Compared with the prior art, the present application has the following advantages:
[0018] The heat generating bag for self-heating food, by the separation arrangement of the two cavities in the bag body, when the first indentation is torn by extruding the first cavity, the water in the first cavity can flow into the second cavity and soak the self-heating bag, so that the heat generating agent in the self-heating bag reacts with water to generate heat, thereby simplifying the step of adding water to the heat generating bag by the user, and the operation is simple and convenient to use.
[0019] In addition, the first indentation is in the shape of a "V", so that the first indentation is easy to break from the tip. At the same time, under the action of pressure, the first indentation can be completely broken to ensure the full release of the liquid. The self-heating bag is configured as two in the first cavity and constitutes the bag body structure, so as to improve the speed of water permeating into the self-heating bag, thereby improving the heating speed of the heat generating bag and enhancing the heating effect.
[0020] In addition, the one-way valve arranged on the plastic layer can timely discharge the gas or liquid in the second cavity to avoid excessive pressure in the bag body. The two plastic sheets extending towards the inside of the pocket structure are formed on the opposite sides of the two plastic layers, and the first indentation is located at the edge of the two plastic sheets, so that the first cavity can extend towards the inside of the pocket structure to reduce the size of the first cavity outside the pocket structure.
[0021] Furthermore, the heat generating agent includes quicklime, which has a good heat generating effect. The packaging material includes a non-woven fabric layer, which can improve the speed of water permeation into the self-heating bag by using the porous structure characteristics of the non-woven fabric. The second indentation is formed between the two plastic layers and is located in the center of the first cavity. When the first cavity is squeezed to make the second indentation tear, the first cavity becomes loose, avoiding the first indentation from being accidentally torn in a non-use scenario. Finally, the edge of the bag body is provided with a easy-to-tear structure, which can tear the bag body through the easy-to-tear structure to obtain the water in the first cavity and the self-heating bag in the second cavity. BRIEF DESCRIPTION OF DRAWINGS
[0022] The accompanying drawings, which form a part of this application, are included to provide a further understanding of the application and are incorporated in and constitute a part of this application. The embodiments of the application illustrated in the drawings are presented by way of example or for purpose of illustration, and not as limitations of the application. In the drawings:
[0023] Figure 1 A whole structure diagram of the heat generating bag for self-heating food according to the embodiments of the application is shown in the figure.
[0024] Figure 2 A schematic diagram of the internal structure of the heat generating bag for self-heating food according to the embodiments of the application is shown in the figure.
[0025] Figure 3 A sectional view of the position A-A shown in the figure. Figure 1
[0026] Explanation of reference signs:
[0027] 1, bag body; 1a, first cavity; 1b, second cavity; 2, self-heating bag;
[0028] 101, plastic layer; 1011, plastic sheet; 1012, one-way valve; 102, first indentation; 103, second indentation; 104, easy-to-tear structure; 201, packaging material; 202, heat generating agent. DETAILED DESCRIPTION
[0029] It should be noted that the embodiments in the application and the features in the embodiments can be combined with each other without conflict.
[0030] In the following description, specific details are set forth in order to provide a thorough understanding of the application. However, persons skilled in the art will understand that the application can be practiced without these specific details. In other instances, well-known methods, structures, circuits, and processes have not been described in detail in order to avoid obscuring the application.
[0031] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" appear, indicating orientation or positional relationship, they are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model. Furthermore, if terms such as "first" or "second" appear, they are also used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0032] Furthermore, in the description of this utility model, unless otherwise explicitly specified, the connecting structures between the mating components can be conventional in the art. Moreover, the terms "installation," "connection," "joining," and "connecting element" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model in light of the specific circumstances.
[0033] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0034] This embodiment relates to a heating bag for self-heating food, such as... Figure 1 , Figure 3 As shown, the overall structure includes a bag body 1 and a self-heating pack 2 disposed inside the bag body 1.
[0035] The bag body 1 is formed by two plastic layers 101, with a first indentation 102 formed by heat pressing between the two plastic layers 101. The first indentation 102 divides the interior of the bag body 1 into a first cavity 1a and a second cavity 1b. The first cavity 1a is filled with water, and the second cavity 1b contains a self-heating pack 2. The self-heating pack 2 includes two layers of packaging material 201 and a heating agent 202. The two layers of packaging material 201 are sealed to form a filling space for filling the heating agent 202. The packaging material 201 has micropores for water flow, and the heating agent 202 can react with water to release heat.
[0036] As set up above, when the first cavity 1a is squeezed and the first indentation 102 is torn, the water in the first cavity 1a can flow into the second cavity 1b and wet the self-heating pack 2, so that the heating agent 202 in the self-heating pack 2 reacts with the water to generate heat. The separation of the two cavities in the bag body 1 simplifies the steps for the user to add water to the heating bag, making the operation simple and easy to use.
[0037] Based on the above overall introduction, specifically, the water amount in the first cavity 1a of the embodiment should be determined according to the content of the heat generating agent 202 in the self-heating bag 2, and the water in the first cavity 1a can fully react with the heat generating agent 202, thereby avoiding the influence of manual water addition on the heating effect of the heating bag due to excessive or insufficient water addition, and thus ensuring the use effect of the heating bag of the embodiment. In specific implementation, the edges of the two plastic layers 101 constituting the bag body 1 are connected by heat sealing, and the width of the first indentation, as well as the temperature and time of heat sealing, are all less than the width of the heat sealing of the edges of the two plastic layers 101 and the heat sealing temperature and time, so that the structural strength of the edges of the bag body 1 is greater than the connection strength of the first indentation 102, to prevent the bag body 1 itself from being broken when the first cavity 1a is squeezed.
[0038] In order to ensure that the first indentation 102 can be smoothly torn when the first cavity 1a is squeezed, as shown in Figure 2 , the first indentation 102 of the embodiment is in a "V" shape, and the tip of the first indentation 102 is arranged towards the second cavity 1b. It can be understood that when the first cavity 1a is squeezed, the tip of the "V" shaped first indentation 102 bears a greater pressure, so that the first indentation 102 is more likely to break from the tip. At the same time, compared with a linear indentation, the breakage of a linear indentation can start from any position, which is easy to cause the local incomplete breakage of the indentation, for example, only the middle of the indentation is broken and the two ends are not broken, which affects the release of water. When the tip of the first indentation 102 is broken, the crack will extend along the two sides of the first indentation 102 under the action of pressure, to ensure that the first indentation 102 is completely broken and the liquid is fully released.
[0039] As a specific implementation form, as shown in Figure 2 , Figure 3 , the self-heating bag 2 of the embodiment is configured to be arranged in the first cavity 1a in two. The edges of the two sides and the bottom of the two self-heating bags 2 are connected to each other, and the edges of the tops of the two self-heating bags 2 are respectively connected to the two plastic layers 101, so that the two self-heating bags 2 are configured to form a pocket structure with the bag opening towards the first cavity 1a. The pocket structure can divide the second cavity 1b into two parts. It can be understood that when the content of the heat generating agent 202 is constant, the thickness of a single self-heating bag 2 is relatively thick, and the time required for water to penetrate into the heat generating agent 202 in the self-heating bag 2 is relatively long, and the heating speed of the heating bag is relatively slow. In the embodiment, when the water in the first cavity 1a is squeezed and flows into the second cavity 1b, the water first enters the inside of the pocket structure and penetrates the pocket structure under the action of pressure. In this process, the water is rapidly penetrated into the inside of the two self-heating bags 2 under the driving of the pressure, and the content of the heat generating agent 202 is constant, and the heat generating agent 202 is packaged into two self-heating bags 2, which can reduce the thickness of a single self-heating bag 2 and improve the speed of water penetration into the inside of the self-heating bag 2, thereby improving the heating speed of the heating bag and improving the heating effect.
[0040] In the specific implementation, after the first indentation 102 is broken, the part of the bag body 1 where the first cavity 1a is located can be inserted into the pocket structure, so that the entire bag body 1 forms a bag-shaped structure capable of containing food to be heated. At this time, the food to be heated can be placed in the bag-shaped structure, so that the two self-heating bags 2 can heat the food sufficiently.
[0041] To prevent the bag body 1 from exploding due to excessive pressure during heating, any plastic layer 101 of the present embodiment is provided with a one-way valve 1012. The one-way valve 1012 is in communication with the part of the second cavity 1b located outside the pocket structure, and the one-way valve 1012 allows the gas and liquid in the second cavity 1b to be discharged. Through the arrangement of the one-way valve 1012, the gas and liquid in the bag body 1 can be discharged in time to avoid excessive pressure in the bag body 1. At the same time, the one-way valve 1012 is in communication with the part of the second cavity 1b located outside the pocket structure, which can prevent water from flowing out of the one-way valve 1012 before it fully reacts with the two self-heating bags 2, thereby avoiding water loss and affecting the use effect of the heating bag. In the specific implementation, the one-way valve 1012 of the present embodiment is made of plastic and is bonded to the plastic layer 101. The one-way valve 1012 has a diaphragm arranged towards the outside of the bag body 1, which can one-way block the hole on the one-way valve 1012. Of course, the one-way valve 1012 can also adopt other structure designs that can achieve one-way sealing effect.
[0042] To reduce the overall volume of the heating bag of the present embodiment, two plastic sheets 1011 are extended on the opposite sides of the two plastic layers 101. The two plastic sheets 1011 extend towards the inside of the pocket structure, and the first indentation 102 is located at the edge of the two plastic sheets 1011, so that the two plastic sheets 1011 and the two plastic layers 101 together form the first cavity 1a. It can be understood that, due to the formation of the receiving space inside the pocket structure, the first cavity 1a can be extended towards the inside of the pocket structure through the arrangement of the two plastic sheets 1011, thereby reducing the size of the first cavity 1a outside the pocket structure under the condition of ensuring a certain amount of water, thereby reducing the overall volume of the heating bag, which is beneficial to the user to carry.
[0043] Further, the heating agent 202 of the present embodiment includes quicklime, which has good heating effect and is not easy to produce additional gas, thereby avoiding excessive pressure in the bag body 1 during use. In addition, the packaging material 201 includes a non-woven fabric layer, which utilizes the porous structure of the non-woven fabric to improve the speed of water permeation into the self-heating bag 2, thereby improving the heating speed. At the same time, the non-woven fabric layers can be hot-pressed to form the above-mentioned closure, and the two self-heating bags 2 can be hot-pressed to the two plastic layers 101 to improve the structural strength.
[0044] In order to prevent the first cavity 1a from being squeezed in non-use scenarios such as transportation, carrying, etc. to cause the first indentation 102 to tear, a second indentation 103 is formed between the two plastic layers 101 in the embodiment, and the second indentation 103 is located in the center of the first cavity 1a, so that the first cavity 1a forms an annular liquid storage space. The connection strength of the second indentation 103 is less than that of the first indentation 102. When the first cavity 1a is squeezed, the second indentation 103 can first tear, so that the two plastic layers 101 in the center of the first cavity 1a are separated, which increases the surface area of the first cavity 1a and increases the flow range of water in the first cavity 1a. Therefore, the first cavity 1a appears to be loose due to the tearing of the second indentation 103. At this time, if it is necessary to make the first indentation 102 tear, the first cavity 1a needs to be subjected to a greater external force. Therefore, by providing the second indentation 103, when the first cavity 1a is squeezed to cause the second indentation 103 to tear, the first cavity 1a becomes loose, and additional force is required to make the first indentation 102 tear, thereby improving the pressure resistance of the first cavity 1a and avoiding accidental tearing of the first indentation 102 in non-use scenarios.
[0045] Finally, the edge of the bag body 1 of the embodiment is provided with a tearable structure 104. Specifically, the tearable structure 104 is provided as two notches at opposite ends of the bag body 1. The user can tear the bag body 1 through the tearable structure 104 to obtain the water in the first cavity 1a and the self-heating bag 2 in the second cavity 1b, so as to facilitate emergency use.
[0046] In summary, the self-heating food heating bag of the embodiment simplifies the step of adding water to the heating bag by the user by separating the two cavities in the bag body 1. When the first indentation 102 is torn by squeezing the first cavity 1a, the water in the first cavity 1a can flow into the second cavity 1b and soak the self-heating bag 2, so that the heating agent 202 in the self-heating bag 2 reacts with water to generate heat. The operation is simple and convenient to use, and has good practicability.
[0047] The above only describes the preferred embodiment of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.
Claims
1. A heating bag for self-heating food, characterized in that: It includes a bag body (1) and a self-heating pack (2) disposed inside the bag body (1); The bag body (1) is formed by two plastic layers (101) and a first indentation (102) is formed by hot pressing between the two plastic layers (101). The first indentation (102) divides the interior of the bag body (1) into a first cavity (1a) and a second cavity (1b). The first cavity (1a) is filled with water, and the second cavity (1b) is equipped with the self-heating pack (2); The self-heating pack (2) includes two layers of packaging material (201) and a heating agent (202), and the two layers of packaging material (201) are sealed to form a filling space for filling the heating agent (202); The packaging material (201) is provided with micropores for the water to flow through, and the heating agent (202) can react with the water to release heat.
2. The heating bag for self-heating food according to claim 1, characterized in that: The first indentation (102) has a "V" shaped structure, and the tip of the first indentation (102) is positioned towards the second cavity (1b).
3. The heating bag for self-heating food according to claim 1, characterized in that: The self-heating pack (2) is configured as two in the first cavity (1a); The sealing edges on both sides and bottom of the two self-heating packs (2) are connected to each other, and the sealing edges on the top of the two self-heating packs (2) are respectively connected to the two plastic layers (101), so that the two self-heating packs (2) form a pocket structure with the bag opening facing the first cavity (1a); The pocket structure can divide the second cavity (1b) into two parts.
4. The heating bag for self-heating food according to claim 3, characterized in that: A one-way valve (1012) is provided on any of the plastic layers (101); The one-way valve (1012) communicates with a portion of the second cavity (1b) located outside the pocket structure, and the one-way valve (1012) allows gas and liquid to be discharged from the second cavity (1b).
5. The heating bag for self-heating food according to claim 3, characterized in that: Two plastic sheets (1011) extend from opposite sides of the two plastic layers (101); The two plastic sheets (1011) extend into the pocket structure, and the first indentation (102) is located at the edge of the two plastic sheets (1011), so that the two plastic sheets (1011) and the two plastic layers (101) together form the first cavity (1a).
6. The heating bag for self-heating food according to claim 1, characterized in that: The heating agent (202) includes quicklime, and the packaging material (201) includes a non-woven fabric layer.
7. The heating bag for self-heating food according to any one of claims 1 to 6, characterized in that: A second indentation (103) is formed between the two plastic layers (101), and the second indentation (103) is located in the center of the first cavity (1a), so that the first cavity (1a) forms an annular liquid storage space; The connection strength of the second indentation (103) is less than that of the first indentation (102).
8. The heating bag for self-heating food according to any one of claims 1 to 6, characterized in that: The edge of the bag (1) is provided with an easy-tear structure (104).