Food packaging bag with multiple seal structure

Abstract

The utility model discloses a food packaging bag of multiple sealing structure, the utility model relates to food packaging bag technical field, including sealed bag subassembly, sealed bag subassembly includes bag body, the first self -sealing strip is fixedly installed to bag body top end inboard, the second self -sealing strip is equipped with in the first self -sealing strip bottom, the communicating hole is seted up in the bag body top one end, the communicating hole sets up between the first self -sealing strip and the second self -sealing strip, the bag body top end outboard is equipped with exhaust component, and the exhaust component includes rubber air bag, rubber air bag fixed mounting is in the bag body top end outboard, rubber air bag sets up between the first self -sealing strip and the second self -sealing strip, one end lateral surface fixed mounting of rubber air bag has the air -intake check valve, and the other end lateral surface fixed mounting of rubber air bag has the exhaust check valve, the air -intake check valve fixed mounting is in the communicating hole inside, this utility model, can restore the vacuum environment in bag body inside after tearing open heat -seal part, has higher practical value.

Description

Technical Field

[0001] This utility model relates to the field of food packaging bag technology, specifically to a food packaging bag with a multi-layer sealing structure. Background Technology

[0002] Food sealing bags are packaging containers made of food-grade materials that achieve sealing, preservation, and protection of food through physical or functional design. They aim to solve problems such as oxidation, cross-contamination of flavors, bacterial growth, and moisture loss in food storage, and are an indispensable food management tool in modern households, catering, and the food industry.

[0003] Based on the above, the following problems were found: Current sealed food packaging bags mainly use concave-convex keel sealing strips to achieve the sealing function, but some foods need to be stored under vacuum conditions. Common food packaging bags rely on vacuum sealing equipment to create a vacuum, and once opened, the vacuum state cannot be restored. There is also a type of vacuum packaging bag with a one-way valve, which requires the use of an external vacuum pump to create a vacuum, making it inconvenient to use.

[0004] Therefore, in view of this, we will study and improve the existing structure and its shortcomings, and provide food packaging bags with multiple sealing structures in order to achieve a more practical purpose. Utility Model Content

[0005] The purpose of this invention is to provide a food packaging bag with a multi-layer sealing structure to solve the problems mentioned in the background art.

[0006] A food packaging bag with a multi-seal structure includes a sealing bag assembly. The sealing bag assembly includes a bag body. A first self-sealing strip is fixedly installed on the inner side of the top of the bag body. A second self-sealing strip is provided at the bottom of the first self-sealing strip. A connecting hole is opened at one end of the top of the bag body. The connecting hole is located between the first and second self-sealing strips. An exhaust assembly is provided on the outer side of the top of the bag body. The exhaust assembly includes a rubber airbag. The rubber airbag is fixedly installed on the outer side of the top of the bag body. The rubber airbag is located between the first and second self-sealing strips. An air inlet one-way valve is fixedly installed on one side of one end of the rubber airbag. An exhaust one-way valve is fixedly installed on the other side of the rubber airbag. The air inlet one-way valve is fixedly installed inside the connecting hole.

[0007] By adopting the above technical solution, the bag body design facilitates the provision of cavity space for food preservation. The first and second self-sealing strips facilitate the formation of a double seal at the top of the bag body, ensuring that the inside of the bag remains sealed during food preservation. The connecting hole facilitates the connection between the inside of the bag body and the exhaust component, allowing the exhaust component to evacuate the inside of the bag body to a vacuum. The connecting hole, located between the first and second self-sealing strips, allows the second self-sealing strip to be positioned at the bottom of the connecting hole, isolating the inside of the bag body from the exhaust component and further improving the stability of the seal. The rubber air bladder design allows for the following steps when sealing food: first, the first self-sealing strip is pressed down; then, the rubber air bladder is slid from the end with the air inlet check valve to the end with the air outlet check valve, allowing the air inside the rubber air bladder to be discharged through the air outlet check valve. The deformation and reset of the rubber air bladder draws air from inside the bag body into the rubber air bladder. Repeating this process evacuates the inside of the bag body to a vacuum, and then the second self-sealing strip is pressed down for multiple seals.

[0008] Furthermore, the first and second self-sealing strips are concave-convex keel sealing strips.

[0009] By adopting the above technical solution and setting the concave-convex keel sealing strip, the reliability of bag sealing can be improved.

[0010] Furthermore, a space is reserved between the top of the first self-sealing strip and the top of the bag body, and the top of the bag body is provided with a heat-sealing part.

[0011] By adopting the above technical solution and setting the heat-sealing part, it is easy to form a permanent seal at the top of the bag, ensuring the integrity of the food from the time it leaves the factory until the first opening, and preventing accidental opening or human tampering during transportation.

[0012] Furthermore, the top two ends of the bag body are provided with easy-tear openings, which are located between the first self-sealing strip and the heat-sealing part.

[0013] By adopting the above technical solution and with the easy-tear opening, users can easily tear off the heat-sealed part and open the bag.

[0014] Furthermore, the bottom of the bag body is provided with a reinforcing part, and a reinforcing patch is fixedly installed on the inner side of the reinforcing part.

[0015] By adopting the above technical solution and setting the reinforcement part, the strength of the bottom of the bag can be increased, making it easier for the bag to stand upright.

[0016] Furthermore, an insert is fixedly installed in the middle of the inner side of the reinforcing part, and the insert has an inverted U-shaped structure.

[0017] By adopting the above technical solution, the inserts can be used to expand the reinforcing part when food is stored inside the bag, making it easier for the bag to stand upright.

[0018] Furthermore, the bag body has a three-layer composite structure, comprising an outer printing layer, a middle barrier layer, and an inner heat-sealing layer.

[0019] By adopting the above technical solution, the bag body has a three-layer composite structure, which facilitates the printing layer to play the role of printing display and mechanical protection, the barrier layer to block oxygen, water vapor and light, and the heat-sealing layer to play the role of heat sealing and food contact safety.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows: The bag body design facilitates the provision of cavity space for food preservation; the first and second self-sealing strips facilitate the formation of a double seal at the top of the bag body, ensuring the bag's interior remains sealed during food preservation; the connecting hole facilitates communication between the bag's interior and the exhaust assembly, allowing the exhaust assembly to evacuate the bag's interior to a vacuum; and the connecting hole, positioned between the first and second self-sealing strips, allows the second self-sealing strip to be positioned at the bottom of the connecting hole, isolating the bag's interior from the exhaust assembly. This invention improves sealing stability by incorporating a rubber air bladder. When sealing food, the first self-sealing strip is tightened, and the air bladder is slid from the end with the inlet check valve to the end with the outlet check valve, allowing air inside the air bladder to escape through the outlet check valve. The deformation and repositioning of the air bladder draws air from inside the bag back into the air bladder. This process is repeated to create a vacuum inside the bag. The second self-sealing strip is then tightened for a multiple seal. This invention restores the vacuum environment inside the bag after the heat-sealed section is torn open, demonstrating high practical value. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the food packaging bag with the multi-sealing structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the unfolded three-dimensional structure of the food packaging bag with the multi-sealing structure of this utility model;

[0023] Figure 3 This is an exploded view of the food packaging bag with the multi-sealing structure of this utility model;

[0024] Figure 4 This is a cross-sectional view of the sealing bag assembly of this utility model;

[0025] Figure 5 This is an exploded view of the sealing bag assembly of this utility model.

[0026] In the diagram: 1. Sealing bag assembly; 11. Bag body; 12. First self-sealing strip; 13. Second self-sealing strip; 14. Heat-sealing part; 15. Easy-tear opening; 16. Reinforcing part; 17. Connecting hole; 18. Insert; 2. Exhaust assembly; 21. Rubber airbag; 22. Inlet check valve; 23. Exhaust check valve. Detailed Implementation

[0027] 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.

[0028] Please see Figures 1-5 This utility model provides a technical solution: a food packaging bag with a multi-seal structure, including a sealing bag assembly 1. The sealing bag assembly 1 includes a bag body 11. The bag body 11 provides a cavity space for food preservation. A first self-sealing strip 12 is fixedly installed on the inner side of the top of the bag body 11. A second self-sealing strip 13 is provided at the bottom of the first self-sealing strip 12. The first self-sealing strip 12 and the second self-sealing strip 13 facilitate the formation of a double seal at the top of the bag body 11, ensuring that the inside of the bag body 11 remains sealed during food preservation. A connecting hole 17 is provided at one end of the top of the bag body 11. The connecting hole 17 facilitates communication between the inside of the bag body 11 and the exhaust assembly 2, allowing the exhaust assembly 2 to evacuate the inside of the bag body 11 to a vacuum. The connecting hole 17 is located between the first self-sealing strip 12 and the second self-sealing strip 13. The connecting hole 17 is located between the first self-sealing strip 12 and the second self-sealing strip 13, allowing the second self-sealing strip 13 to be positioned at the bottom of the connecting hole 17, isolating the inside of the bag body 11 from the exhaust. Component 2 further improves the stability of the seal. An exhaust component 2 is provided on the outer side of the top of the bag body 11. The exhaust component 2 includes a rubber airbag 21, which is fixedly installed on the outer side of the top of the bag body 11. The rubber airbag 21 is positioned between the first self-sealing strip 12 and the second self-sealing strip 13. An air inlet one-way valve 22 is fixedly installed on one side of one end of the rubber airbag 21, and an exhaust one-way valve 23 is fixedly installed on the other side of the rubber airbag 21. The air inlet one-way valve 22 is fixedly installed inside the connecting hole 17. With the setting of the rubber airbag 21, it is convenient to first press the first self-sealing strip 12 when sealing food, and then slide the rubber airbag 21 from the end with the air inlet one-way valve 22 to the end with the exhaust one-way valve 23 by pressing with a finger. The air inside the rubber airbag 21 is discharged from the exhaust one-way valve 23. The deformation and reset of the rubber airbag 21 draws the air inside the bag body 11 into the rubber airbag 21. Repeated operation realizes the vacuum inside the bag body 11, and then the second self-sealing strip 13 is pressed to achieve multiple seals.

[0029] Among them, the first self-sealing strip 12 and the second self-sealing strip 13 are concave-convex keel sealing strips. The concave-convex keel sealing strips facilitate the improvement of the sealing reliability of the bag body 11.

[0030] The first self-sealing strip 12 has a space between its top and the top of the bag body 11. The top of the bag body 11 is provided with a heat-sealing part 14. The heat-sealing part 14 facilitates the formation of a permanent seal on the top of the bag body 11, ensuring the integrity of the food from the time it leaves the factory until it is first opened, and preventing accidental opening or human tampering during transportation.

[0031] The bag body 11 has easy-tear openings 15 at both ends of the top. The easy-tear openings 15 are located between the first self-sealing strip 12 and the heat-sealing part 14. The easy-tear openings 15 make it easy for users to tear off the heat-sealing part 14 with minimal effort, making it convenient to open the bag body 11.

[0032] The bottom of the bag body 11 is provided with a reinforcing part 16, and a reinforcing patch is fixedly installed on the inner side of the reinforcing part 16. The reinforcing part 16 is provided to increase the strength of the bottom of the bag body 11 and make it easier for the bag body 11 to stand up.

[0033] An insert 18 is fixedly installed in the middle of the inner side of the reinforcing part 16. The insert 18 has an inverted U-shaped structure. The insert 18 can open the reinforcing part 16 when food is stored inside the bag body 11, so that the bag body 11 can stand up on its own.

[0034] The bag body 11 has a three-layer composite structure, including an outer printing layer, a middle barrier layer, and an inner heat-sealing layer. The three-layer composite structure of the bag body 11 facilitates the printing layer to play the role of printing display and mechanical protection, the barrier layer to block oxygen, water vapor and light, and the heat-sealing layer to play the role of heat sealing and food contact safety.

[0035] Specifically, the working principle of this multi-layered sealing food packaging bag is as follows: During use, the bag body 11 has a three-layer composite structure. The printing layer provides printing display and mechanical protection; the barrier layer blocks oxygen, moisture, and light; and the heat-sealing layer ensures heat sealing and food safety. The bag body 11 provides a cavity space for food preservation. The first self-sealing strip 12 and the second self-sealing strip 13 create a double seal at the top of the bag body 11, ensuring the interior of the bag body 11 remains sealed during food storage. The raised and recessed sealing strips enhance the reliability of the seal. The heat-sealing part 14 creates a permanent seal at the top of the bag body 11, ensuring the integrity of the food from the time of manufacture to the first opening, preventing accidental opening or tampering during transportation. The easy-tear opening 15 allows users to easily tear off the heat-sealing part 14, facilitating the opening of the bag body 11. The connecting hole 17 allows for easy connection between the interior of the bag body 11 and the exhaust system. The connection between component 2 and the exhaust assembly 2 facilitates the vacuuming of the interior of the bag body 11. The connection hole 17, positioned between the first self-sealing strip 12 and the second self-sealing strip 13, allows the second self-sealing strip 13 to be positioned at the bottom of the connection hole 17, isolating the interior of the bag body 11 from the exhaust assembly 2 and further improving the stability of the seal. The rubber air bladder 21 allows for easy sealing of food by first pressing the first self-sealing strip 12, then sliding the rubber air bladder 21 from the end with the inlet one-way valve 22 to the end with the exhaust one-way valve 23, thus evacuating the bag body 11. Air inside the rubber airbag 21 is discharged through the exhaust check valve 23. The deformation and reset of the rubber airbag 21 draws air from inside the bag body 11 into the rubber airbag 21. Repeated operation achieves vacuuming inside the bag body 11. Then, the second self-sealing strip 13 is pressed to achieve multiple seals. The reinforcement part 16 is provided to increase the strength of the bottom of the bag body 11 and facilitate the bag body 11 to stand upright. The insert 18 is provided to allow the reinforcement part 16 to be opened when food is stored inside the bag body 11, so that the bag body 11 can stand upright.

[0036] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A food packaging bag with a multi-layer sealing structure, characterized in that, The bag assembly includes a sealing bag assembly (1), which includes a bag body (11). A first self-sealing strip (12) is fixedly installed on the inner side of the top of the bag body (11). A second self-sealing strip (13) is provided at the bottom of the first self-sealing strip (12). A connecting hole (17) is provided at one end of the top of the bag body (11). The connecting hole (17) is located between the first self-sealing strip (12) and the second self-sealing strip (13). An exhaust assembly (2) is provided on the outer side of the top of the bag body (11). The exhaust assembly (2) includes a rubber airbag (21). The rubber airbag (21) is fixedly installed on the outer side of the top of the bag body (11). The rubber airbag (21) is located between the first self-sealing strip (12) and the second self-sealing strip (13). An air inlet one-way valve (22) is fixedly installed on one side of one end of the rubber airbag (21). An exhaust one-way valve (23) is fixedly installed on the other side of the rubber airbag (21). The air inlet one-way valve (22) is fixedly installed inside the connecting hole (17).

2. The food packaging bag with a multi-seal structure according to claim 1, characterized in that, The first self-sealing strip (12) and the second self-sealing strip (13) are concave-convex keel sealing strips.

3. The food packaging bag with a multi-seal structure according to claim 2, characterized in that, The top of the first self-sealing strip (12) and the top of the bag body (11) are reserved with space, and the top of the bag body (11) is provided with a heat-sealing part (14).

4. The food packaging bag with a multi-seal structure according to claim 3, characterized in that, The bag body (11) has easy-tear openings (15) at both ends of the top, and the easy-tear openings (15) are located between the first self-sealing strip (12) and the heat-sealing part (14).

5. The food packaging bag with a multi-seal structure according to claim 4, characterized in that, The bottom of the bag body (11) is provided with a reinforcing part (16), and a reinforcing patch is fixedly installed on the inner side of the reinforcing part (16).

6. The food packaging bag with a multi-seal structure according to claim 5, characterized in that, An insert (18) is fixedly installed in the middle of the inner side of the reinforcing part (16), and the insert (18) has an inverted U-shaped structure.

7. The food packaging bag with a multi-seal structure according to claim 6, characterized in that, The bag body (11) is a three-layer composite structure, comprising an outer printing layer, a middle barrier layer and an inner heat-sealing layer.

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