A microwave vacuum food packaging bag with a heat insulation layer

Abstract

This utility model discloses a microwave vacuum food packaging bag with a heat insulation layer, including a bag body. A first heat insulation layer is fixedly connected to the outer wall of the bag body, and a second heat insulation layer is fixedly connected to the outer wall of the first heat insulation layer. An air inlet seat is fixedly connected to the inner wall of the bag body, and an air inlet hole is formed on the outer wall of the air inlet seat. This utility model relates to the field of food packaging technology. This microwave vacuum food packaging bag with a heat insulation layer, through the cooperation of the air inlet seat, air inlet hole, air outlet seat, air outlet hole, elastic diaphragm, and sealing ring, realizes that when the air pressure inside the bag rises to a set threshold, it automatically releases part of the gas. This not only effectively avoids the risk of expansion and bursting caused by excessive air pressure inside the bag, but also prevents hot food and soup from splashing, protects the inside of the microwave oven from contamination, and eliminates the risk of burns to the user, making the microwave heating process safer and more reliable.

Description

Technical Field

[0001] This utility model relates to the field of food packaging technology, specifically to a microwave vacuum food packaging bag with a heat insulation layer. Background Technology

[0002] Microwave vacuum food packaging bags are a new type of food packaging bag that combines vacuum preservation and microwave heating functions. They can both achieve vacuum-sealed storage of food and allow it to be directly placed in a microwave oven for heating.

[0003] Traditional microwave vacuum food packaging bags with heat insulation layers are used by vacuuming equipment to remove the air from the bag to achieve vacuum preservation. When needed, they can be directly placed in the microwave oven for heating without worrying about being burned by the microwave vacuum food packaging bag.

[0004] However, in actual use, users need to microwave the food inside the microwave vacuum food packaging bag with heat insulation layer. When microwave heating, the food inside the bag will evaporate the moisture rapidly, which may produce a large amount of water vapor. This will cause the air pressure inside the bag to rise sharply. When the air pressure inside the bag exceeds the bag's tolerance limit, it may cause the bag to burst suddenly. This will not only cause hot food and soup to splash everywhere, contaminating the inside of the microwave oven and increasing the difficulty of cleaning, but may also burn the user due to hot liquid splashing out, posing a serious safety hazard. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a microwave vacuum food packaging bag with a heat insulation layer. This solves the problem that, in actual use, when users microwave food inside the bag, the food's moisture evaporates rapidly, potentially generating a large amount of water vapor. This causes a sharp increase in internal pressure, which, if exceeding the bag's tolerance, can lead to sudden bursting. This not only causes hot food and liquids to splatter, contaminating the microwave oven and increasing cleaning difficulty, but also poses a serious safety hazard, potentially scalding users due to the hot liquid splashing out.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a microwave vacuum food packaging bag with a heat insulation layer, comprising a bag body, a first heat insulation layer fixedly connected to the outer wall of the bag body, a second heat insulation layer fixedly connected to the outer wall of the first heat insulation layer, an air inlet seat fixedly connected to the inner wall of the bag body, an air inlet hole provided on the outer wall of the air inlet seat, the side of the outer wall of the air inlet seat away from the air inlet hole passing through the bag body, the inner walls of the first heat insulation layer and the second heat insulation layer in sequence, and extending to the outside of the second heat insulation layer, an exhaust seat fixedly connected to the side of the outer wall of the air inlet seat away from the air inlet hole, an exhaust hole provided on the outer wall of the exhaust seat, an elastic diaphragm fixedly connected to the inner wall of the exhaust seat, a sealing ring abutted to the side of the outer wall of the elastic diaphragm near the air inlet seat, the outer wall of the sealing ring fixedly connected to the inner wall of the exhaust seat, and the side of the outer wall of the sealing ring away from the elastic diaphragm abutting the outer wall of the air inlet seat.

[0007] Preferably, a sealing buckle is fixedly connected to the inner wall of the bag on the side away from the air inlet seat, a heat sealing strip is provided above the sealing buckle, the heat sealing strip is fixedly connected to the inner wall of the bag, and a sealing strip is fixedly connected to the outer wall of the bag on the side away from the first heat insulation layer.

[0008] Preferably, an easy-tear opening is provided below the sealing strip, and the easy-tear opening is fixedly connected to the outer wall of the bag.

[0009] Preferably, a vacuum seat is fixedly connected to the outer wall of the bag near the air inlet seat. The vacuum seat passes through the inner walls of the first insulation layer and the second insulation layer in sequence, and extends to the outside of the second insulation layer.

[0010] Preferably, a memo pad is fixedly connected to the outer wall of the second heat insulation layer on the side away from the exhaust seat.

[0011] Beneficial effects

[0012] This utility model provides a microwave vacuum food packaging bag with a heat insulation layer. It has the following beneficial effects: Through the cooperation of an air inlet seat, air inlet hole, air outlet seat, air outlet hole, elastic diaphragm, and sealing ring, this microwave vacuum food packaging bag automatically releases some gas when the internal pressure rises to a set threshold. This not only effectively avoids the risk of expansion and bursting caused by excessive internal pressure, but also prevents hot food and soup from splashing, protecting the microwave oven interior from contamination and eliminating the risk of burns to the user, making the microwave heating process safer and more reliable.

[0013] By combining sealing buckles, heat sealing strips, and sealing strips, multiple seals are achieved for microwave vacuum food packaging bags with heat insulation layers, improving overall sealing performance. Even in different scenarios such as vacuum storage, transportation, and microwave heating, the sealing function can be stably performed, ensuring that food will not leak in all aspects. This maintains the quality of the food and avoids pollution and waste caused by leakage. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 for Figure 1 A schematic diagram of the structure of the central exhaust seat, exhaust port, and elastic diaphragm;

[0016] Figure 3 for Figure 2 Exploded view;

[0017] Figure 4 for Figure 1 A schematic diagram of the structure of the central sealing buckle, heat sealing strip, and sealing strip.

[0018] In the diagram: 1. Bag body; 2. First insulation layer; 3. Second insulation layer; 4. Air inlet seat; 5. Air inlet hole; 6. Exhaust seat; 7. Exhaust hole; 8. Elastic diaphragm; 9. Sealing ring; 10. Sealing buckle; 11. Heat sealing strip; 12. Sealing strip; 13. Easy-tear opening; 14. Vacuum seat; 15. Notepad. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] In actual use, users need to microwave food inside microwave vacuum food packaging bags with heat insulation layers. When microwaved, the food inside the bag will evaporate moisture rapidly, which may produce a large amount of water vapor. This will cause the air pressure inside the bag to rise sharply. When the air pressure inside the bag exceeds the bag's tolerance limit, the bag may suddenly burst. This will not only cause hot food and soup to splash everywhere, contaminating the inside of the microwave oven and increasing the difficulty of cleaning, but may also burn the user due to hot liquid splashing out, posing a serious safety hazard.

[0021] In view of this, the present invention provides a microwave vacuum food packaging bag with a heat insulation layer. This microwave vacuum food packaging bag with a heat insulation layer, through the cooperation of an air inlet seat, an air inlet hole, an air outlet seat, an air outlet hole, an elastic diaphragm, and a sealing ring, enables the automatic release of some gas when the air pressure inside the bag rises to a set threshold. This not only effectively avoids the risk of expansion and bursting caused by excessive air pressure inside the bag, but also prevents hot food and soup from splashing, protects the inside of the microwave oven from contamination, and eliminates the risk of burns to the user, making the microwave heating process safer and more reliable.

[0022] Those skilled in the art can connect the components in this case sequentially. The specific connection and operation sequence should refer to the working principle described below. The detailed connection methods are well-known technologies in the field. The working principle and process are mainly described below.

[0023] Example 1, by Figure 1-4 It is known that a microwave vacuum food packaging bag with a heat insulation layer includes a bag body 1. A first heat insulation layer 2 is fixedly connected to the outer wall of the bag body 1. A second heat insulation layer 3 is fixedly connected to the outer wall of the first heat insulation layer 2. An air inlet seat 4 is fixedly connected to the inner wall of the bag body 1. An air inlet hole 5 is opened on the outer wall of the air inlet seat 4. The side of the outer wall of the air inlet seat 4 away from the air inlet hole 5 passes through the inner walls of the bag body 1, the first heat insulation layer 2 and the second heat insulation layer 3 in sequence, and extends to the outside of the second heat insulation layer 3. An exhaust seat 6 is fixedly connected to the side of the outer wall of the air inlet seat 4 away from the air inlet hole 5. The outer wall of the exhaust seat 6 is fixedly connected to the outer wall of the second heat insulation layer 3. An exhaust hole 7 is opened on the outer wall of the exhaust seat 6. An elastic diaphragm 8 is fixedly connected to the inner wall of the exhaust seat 6. A sealing ring 9 is attached to the side of the outer wall of the elastic diaphragm 8 near the air inlet seat 4. The outer wall of the sealing ring 9 is fixedly connected to the inner wall of the exhaust seat 6. The side of the outer wall of the sealing ring 9 away from the elastic diaphragm 8 is attached to the outer wall of the air inlet seat 4.

[0024] In the specific implementation process, it is particularly worth noting that the overall shape of the bag body 1 is similar to a rectangle, and there are two through holes provided below its outer wall. Its material can be selected as food-grade transparent metallocene polyethylene. The first heat insulation layer 2 covers the outer wall of the bag body 1, and its height is slightly lower than that of the bag body 1. The first heat insulation layer 2 can be made of aerogel felt material with good microwave penetration, which can effectively reduce the heat dissipation from the bag body 1 to the outside while not affecting microwave penetration. The second heat insulation layer 3 can be made of nano-silica aerogel composite material, which further enhances the heat insulation effect and reduces the influence of the external environment on the internal temperature of the bag body 1. Observation windows are provided at the centers of the outer walls of the first heat insulation layer 2 and the second heat insulation layer 3, so that the condition of the food inside the bag body 1 can be observed. The cross-section of the air inlet seat 4 is similar to a 'convex' shape, and its material can be selected as food-grade polypropylene. It is fixed to the inner wall of the bag body 1 through a food-grade adhesive. There is a cylindrical groove inside it, and an air inlet hole 5 is provided on one side located inside the bag body 1. Multiple air inlet holes 5 are provided, and the air inlet seat 4 realizes the gas circulation inside and outside the bag through the air inlet holes 5. The exhaust seat 6 is overall similar to a tube, and its outer wall is fixed to the outer wall of the second heat insulation layer 3 through a food-grade adhesive. Multiple exhaust holes 7 are provided on its outer wall for discharging excessive gas inside the bag. The cross-section of the elastic diaphragm 8 is similar to a 'convex' shape, and its material can be selected as food-grade silicone rubber. The protruding side of it is closely fitted with the sealing ring 9. The sealing ring 9 is overall similar to a ring, and its cross-section is similar to a trapezoid. Its material can be selected as food-grade nitrile rubber. Among them, all the structures using the fixed connection method in the above are fixed with food-grade adhesives. During actual operation, the gas generated inside the bag body 1 enters the inside of the air inlet seat 4 through the air inlet holes 5. As the gas increases, the air pressure inside the air inlet seat 4 gradually rises. When the air pressure inside the bag rises to the set threshold value, the pressure of the gas is greater than the elastic force of the elastic diaphragm 8 itself, and the gas pushes up the elastic diaphragm 8, causing a gap to appear between the elastic diaphragm 8 and the sealing ring 9. Then, the gas enters the inside of the exhaust seat 6 through the gap and is finally discharged through the exhaust holes 7, thereby realizing the automatic adjustment of the air pressure inside the bag. And after the air pressure drops to the safe range, the elastic diaphragm 8 returns to its original position by its own elasticity and fits with the sealing ring 9 again to achieve sealing, thus improving the use safety of the microwave vacuum food packaging bag with a heat insulation layer;

[0025] Further, a sealing buckle 10 is fixedly connected to one side of the inner wall of the bag body 1 away from the air inlet seat 4. Above the sealing buckle 10, there is a heat-sealing strip 11, and the heat-sealing strip 11 is fixedly connected to the inner wall of the bag body 1. A sealing strip 12 is fixedly connected to one side of the outer wall of the bag body 1 away from the first heat insulation layer 2;

[0026] In the specific implementation process, it is worth noting that the sealing buckle 10 consists of two parts: a male buckle with a protrusion and a female buckle with a groove. The two parts work together to initially seal the bag body 1, facilitating repeated opening and closing for food retrieval and enhancing the overall sealing performance. The material of the male buckle 10 can be food-grade polyethylene. The material of the heat sealing strip 11 can be metallocene polyethylene. During actual sealing, the heat sealing strip 11 is heated and melted by heat sealing equipment, so that it is tightly bonded to the inner heat sealing layer to form the first line of defense. The sealing strip 12 can be made of silicone rubber. During actual sealing, the sealing strip 12 is fixed to the edge of the opening of the bag body 1 by molding process, and works with the heat sealing strip 11 to form a double seal, effectively preventing gas and liquid leakage. Among them, the fixed connection methods in the above structure are all fixed with food-grade adhesive.

[0027] Furthermore, an easy-tear opening 13 is provided below the sealing strip 12, and the easy-tear opening 13 is fixedly connected to the outer wall of the bag body 1;

[0028] In the specific implementation process, it is worth noting that there are two easy-tear openings 13, located on both sides of the bottom of the sealing strip 12. They are similar to serrations and can be made of thin food-grade transparent material. The opening difficulty is reduced by indentation treatment, without affecting the transparency and safety of the bag body 1. This improves the ease of use of the microwave vacuum food packaging bag with heat insulation layer.

[0029] Example 2, by Figure 1-4 It can be seen that a vacuum seat 14 is fixedly connected to the side of the outer wall of the bag body 1 near the air inlet seat 4. The vacuum seat 14 passes through the inner wall of the first heat insulation layer 2 and the second heat insulation layer 3 in sequence, and extends to the outside of the second heat insulation layer 3.

[0030] In the specific implementation process, it is worth noting that the vacuum seat 14 is similar to a cylinder and is used to connect the vacuum equipment to extract the air inside the bag 1 to achieve vacuum packaging. Its material can be food-grade polypropylene, which improves the structural stability of the microwave vacuum food packaging bag with heat insulation layer.

[0031] Furthermore, a memo pad 15 is fixedly connected to the outer wall of the second insulation layer 3 on the side away from the exhaust seat 6;

[0032] In the specific implementation process, it is worth noting that the notepad 15 is rectangular in shape and located on the front of the second heat insulation layer 3, which makes it convenient for users to record information such as the storage date and shelf life of food, and facilitates food management. Its material is paper substrate, which is fixed to the outer wall of the second heat insulation layer 3 by food-grade adhesive, further improving the ease of use of the microwave vacuum food packaging bag with heat insulation layer.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A microwave vacuum food packaging bag with thermal insulation, comprising a bag body (1), characterized in that: The outer wall of the bag body (1) is fixedly connected to a first heat insulation layer (2), and the outer wall of the first heat insulation layer (2) is fixedly connected to a second heat insulation layer (3). The inner wall of the bag body (1) is fixedly connected to an air inlet seat (4). An air inlet hole (5) is provided on the outer wall of the air inlet seat (4). The side of the outer wall of the air inlet seat (4) away from the air inlet hole (5) passes through the inner walls of the bag body (1), the first heat insulation layer (2), and the second heat insulation layer (3) in sequence, and extends to the outside of the second heat insulation layer (3). The side of the outer wall of the air inlet seat (4) away from the air inlet hole (5) An exhaust seat (6) is fixedly connected to one side of the air intake seat (4). The outer wall of the exhaust seat (6) is fixedly connected to the outer wall of the second heat insulation layer (3). An exhaust hole (7) is opened on the outer wall of the exhaust seat (6). An elastic diaphragm (8) is fixedly connected to the inner wall of the exhaust seat (6). A sealing ring (9) is attached to the side of the outer wall of the elastic diaphragm (8) close to the air intake seat (4). The outer wall of the sealing ring (9) is fixedly connected to the inner wall of the exhaust seat (6). The side of the outer wall of the sealing ring (9) away from the elastic diaphragm (8) is attached to the outer wall of the air intake seat (4).

2. A microwave vacuum food packaging bag with a heat insulation layer according to claim 1, characterized in that: A sealing buckle (10) is fixedly connected to the inner wall of the bag body (1) away from the air inlet seat (4). A heat sealing strip (11) is provided above the sealing buckle (10). The heat sealing strip (11) is fixedly connected to the inner wall of the bag body (1). A sealing strip (12) is fixedly connected to the outer wall of the bag body (1) away from the first heat insulation layer (2).

3. A microwave vacuum food packaging bag with a heat insulation layer according to claim 2, characterized in that: The sealing strip (12) is provided with an easy-tear opening (13) below it, and the easy-tear opening (13) is fixedly connected to the outer wall of the bag body (1).

4. A microwave vacuum food packaging bag with a heat insulation layer according to claim 1, characterized in that: A vacuum seat (14) is fixedly connected to the outer wall of the bag body (1) near the air inlet seat (4). The vacuum seat (14) passes through the inner walls of the first heat insulation layer (2) and the second heat insulation layer (3) in sequence, and extends to the outside of the second heat insulation layer (3).

5. A microwave vacuum food packaging bag with a heat insulation layer according to claim 1, characterized in that: A memo pad (15) is fixedly connected to the outer wall of the second heat insulation layer (3) on the side away from the exhaust seat (6).

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