A composite multifunctional sealing gasket

Abstract

This utility model discloses a composite multifunctional sealing gasket, including an outer gasket body and an inner gasket body disposed on the lower outer side of the outer gasket body. Both the outer and inner gasket bodies comprise an aluminum foil layer, a cardboard layer, and an adhesive layer, respectively. The circumference of the inner gasket body is smaller than that of the outer gasket body. A silicone air bladder is disposed on the lower outer side of the outer gasket body, and an inner cavity is disposed on the inner side of the silicone air bladder. In this invention, after opening the bottle, the user can invert the gasket and replace it on the bottle opening. When the silicone air bladder contacts the inner wall of the bottle opening, it will deform under pressure, fully conforming to the shape of the inner wall of the bottle opening to form a tight seal. This sealing method effectively fills any tiny gaps that may exist at the bottle opening, greatly reducing the risk of food or medicine leakage and the entry of impurities such as air and moisture, providing reliable secondary protection for the opened product.

Description

Technical Field

[0001] This utility model belongs to the technical field of sealing gaskets, specifically relating to a composite multifunctional sealing gasket. Background Technology

[0002] Composite multifunctional sealing gaskets are high-performance sealing materials widely used in pharmaceutical and food packaging. They are composed of multiple materials to meet the needs of different applications. These gaskets possess excellent sealing performance, chemical corrosion resistance, high-temperature resistance, and mechanical strength, effectively preventing pharmaceuticals and food from becoming contaminated or spoiled during storage and transportation.

[0003] In pharmaceutical packaging, composite multifunctional sealing gaskets are used to seal bottle caps, syringes, infusion bags, etc., ensuring the sterility and stability of the medicines. In food packaging, they are used to seal canned goods, beverage bottles, condiment bottles, etc., preventing food oxidation, moisture absorption, or leakage. Because their materials are safe, non-toxic, and odorless, meeting food and pharmaceutical hygiene standards, they are widely used in related industries.

[0004] Current food and pharmaceutical packaging relies solely on the pressure of the cap and gasket for sealing after the sealing film is torn off, which generally leaves gaps, making it easy for leaks and outside air to enter. For bottled sauces, in particular, traditional gaskets are insufficient to prevent sauce leakage and air from entering after opening, accelerating spoilage. Utility Model Content

[0005] The purpose of this invention is to provide a composite multifunctional sealing gasket to solve the problem in the prior art where existing food and pharmaceutical packaging relies solely on the bottle cap pressing the gasket together after the sealing film is torn open, resulting in gaps that easily lead to leakage and the entry of outside air. For bottled sauces, traditional gaskets are insufficient to prevent sauce leakage and air ingress after opening, accelerating spoilage.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a composite multifunctional sealing gasket, comprising an outer gasket body;

[0007] An inner gasket body is provided at the lower outer side of the outer gasket body. The outer gasket body and the inner gasket body respectively include an aluminum foil layer, a cardboard layer and an adhesive layer.

[0008] The circumference of the inner gasket body is smaller than that of the outer gasket body. A silicone airbag is provided on the lower outer side of the outer gasket body, and an inner cavity is provided on the inner side of the silicone airbag.

[0009] Preferably, the inner gasket body and the outer gasket body are connected by an adhesive bonding method, the outer gasket body is provided with a silicone arc edge on its outer periphery, and the inner gasket body is provided with a hard arc edge on its outer periphery.

[0010] Preferably, the silicone airbag is connected to the outer gasket body by adhesive bonding, and the inner cavity is filled with nitrogen gas.

[0011] Preferably, the silicone airbag is thicker than the inner pad body, and the silicone airbag is arranged in a ring around the inner pad body.

[0012] Preferably, the silicone airbag can be deformed by pressure, and the circumference of the silicone airbag after being compressed is greater than that of the outer pad body.

[0013] Preferably, a cardboard is provided on the inner side of the aluminum foil layer, and an adhesive layer is provided at the junction of the cardboard and the aluminum foil layer.

[0014] Compared with the prior art, this utility model provides a composite multifunctional sealing gasket, which has the following beneficial effects:

[0015] 1. After opening, the user can invert the gasket and replace it on the bottle opening. The silicone airbag deforms under pressure, fully conforming to the shape of the inner wall of the bottle opening to form a tight seal. This sealing method effectively fills any tiny gaps that may exist at the bottle opening, greatly reducing the risk of food or medicine leakage and the entry of impurities such as outside air and moisture, providing reliable secondary protection for the opened product.

[0016] Furthermore, the silicone airbag is thicker than the inner gasket body and is arranged in a ring around the inner gasket body. This structural design allows the silicone airbag to expand evenly in all directions when compressed. Regardless of the size of the bottle opening or the difference in bottle opening shape due to the manufacturing process, the silicone airbag can achieve a good sealing effect through its own deformation, demonstrating strong adaptability.

[0017] 2. The nitrogen gas filling the inner cavity is chemically stable and does not react with food or pharmaceuticals, ensuring the safety of the product during storage and use. Simultaneously, the nitrogen gas has a certain pressure, which helps maintain pressure balance inside the silicone airbag during deformation under pressure, preventing excessive deformation or rupture and further enhancing the reliability and durability of the seal.

[0018] Furthermore, the silicone arc edge on the outer periphery of the outer gasket further enhances the seal with the bottle opening, reducing gaps. During the secondary sealing process, the silicone arc edge makes tight contact with the bottle opening, forming an additional sealing barrier and effectively improving the overall sealing performance.

[0019] The hard arc edge on the outer periphery of the inner gasket provides structural support. When the silicone airbag is compressed and deformed, the hard arc edge ensures that the inner gasket does not undergo excessive displacement or deformation, thus maintaining the stability of the entire gasket structure and ensuring the durability of the sealing effect. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the gasket in this utility model.

[0021] Figure 2 In this utility model Figure 1 A diagram from a lower perspective.

[0022] Figure 3 In this utility model Figure 1 A schematic diagram of the structure after partial removal.

[0023] Figure 4 In this utility model Figure 4 A structural diagram from a lower viewpoint.

[0024] Figure 5 This is a schematic diagram showing the layered structure of the outer gasket body and the inner gasket body in this utility model.

[0025] In the diagram: 1. Outer gasket body; 2. Silicone airbag; 3. Silicone curved edge; 4. Inner gasket body; 5. Hard curved edge; 6. Inner cavity; 7. Aluminum foil layer; 8. Cardboard; 9. Adhesive layer. Detailed Implementation

[0026] 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.

[0027] This utility model provides, for example Figure 1-5 The composite multifunctional sealing gasket shown includes an outer gasket body 1;

[0028] An inner gasket body 4 is provided at the lower outer side of the outer gasket body 1. The outer gasket body 1 and the inner gasket body 4 respectively include an aluminum foil layer 7, a cardboard 8 and an adhesive layer 9.

[0029] The circumference of the inner gasket body 4 is smaller than that of the outer gasket body 1. A silicone airbag 2 is provided on the lower outer side of the outer gasket body 1, and an inner cavity 6 is provided on the inner side of the silicone airbag 2.

[0030] A cardboard 8 is provided on the inner side of the aluminum foil layer 7, and an adhesive layer 9 is provided at the joint between the cardboard 8 and the aluminum foil layer 7.

[0031] In this embodiment, when the food or medicine packaging is unopened, the composite multifunctional sealing gasket is placed on the bottle cap using a standard installation method. At this time, the outer gasket body 1 is located on the upper layer, and the inner gasket body 4 is fixed to the lower outer side of the outer gasket body 1 by adhesive bonding. The aluminum foil layer 7 of the outer gasket body 1 and the inner gasket body 4 faces outward and is in close contact with the bottle mouth sealing film. Utilizing the excellent barrier properties of the aluminum foil layer 7, initial sealing protection for the food or medicine is achieved.

[0032] When the user needs to open the packaging, unscrew the cap. As the cap opens, the entire composite multi-functional sealing gasket is removed along with the cap. At this point, the user needs to invert the gasket so that the inner gasket body 4, which was originally located at the bottom, is facing upwards and the outer gasket body 1 is facing downwards.

[0033] Replace the inverted gasket on the bottle opening, so that the silicone airbag 2 side faces the inner wall of the bottle opening. Because the silicone airbag 2 has a certain degree of elasticity, when the user presses down on the bottle cap during the process of replacing the bottle opening, the inner wall of the bottle opening will compress the silicone airbag 2.

[0034] As pressure is applied, the silicone airbag 2 deforms under pressure, and its circumference gradually increases until it exceeds the circumference of the outer gasket body 1, thus fully conforming to the shape of the inner wall of the bottle opening and forming a tight seal. At this time, the nitrogen gas filled in the inner cavity 6 can buffer and maintain the stability of the airbag shape, further enhancing the sealing effect and effectively preventing food or medicine leakage as well as the entry of impurities such as outside air and moisture.

[0035] Preferably, when the packaging is unopened, the aluminum foil layer 7 of the outer gasket body 1 and the inner gasket body 4, with its excellent barrier properties, can effectively prevent external factors such as oxygen, moisture, and microorganisms from corroding the food or medicine. The cardboard 8 provides support for the aluminum foil layer 7, ensuring that the aluminum foil layer will not be damaged by external forces during long-term storage, while the adhesive layer 9 serves to firmly connect the aluminum foil layer 7 and the cardboard 8, ensuring the stability of the entire gasket structure.

[0036] like Figure 1-5 As shown, the inner gasket body 4 and the outer gasket body 1 are connected by adhesive bonding. The outer periphery of the outer gasket body 1 is provided with a silicone arc edge 3, and the outer periphery of the inner gasket body 4 is provided with a hard arc edge 5. The silicone airbag 2 is connected to the outer gasket body 1 by adhesive bonding. The inner cavity 6 is filled with nitrogen gas. The thickness of the silicone airbag 2 is greater than that of the inner gasket body 4, and the silicone airbag 2 is arranged in a ring around the inner gasket body 4. The silicone airbag 2 can be deformed by pressure. After being compressed, the circumference of the silicone airbag 2 is greater than that of the outer gasket body 1.

[0037] Preferably, after the user opens the bottle cap, the gasket can be inverted and placed back on the bottle opening. The silicone airbag 2 deforms under pressure, achieving a secondary seal. Silicone material itself has good elasticity and plasticity, and can change shape when squeezed by the inner wall of the bottle opening. The silicone airbag 2 is thicker than the inner gasket body 4 and is arranged in a ring around the inner gasket body 4. This structural design allows the silicone airbag 2 to expand evenly in all directions under pressure, thus achieving a complete fit to the inner wall of the bottle opening. Simultaneously, the nitrogen gas filled in the inner cavity 6, due to its stable chemical properties, does not react with food or medicine and has a certain pressure. This maintains the pressure balance inside the airbag during the deformation of the silicone airbag 2, preventing excessive deformation or rupture and ensuring the reliability and durability of the seal. Furthermore, the silicone arc edge 3 on the outer periphery of the outer gasket body 1 and the hard arc edge 5 on the outer periphery of the inner gasket body 4 also play an auxiliary role in the secondary sealing process. The silicone arc edge 3 can further enhance the sealing effect with the bottle mouth and reduce the generation of gaps; the hard arc edge 5 provides a certain structural support for the inner gasket body 4, ensuring that the inner gasket body 4 will not undergo excessive displacement or deformation when the silicone airbag 2 is deformed by pressure, thereby maintaining the stability of the entire gasket structure.

[0038] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A composite multifunctional sealing gasket, characterized in that: Including the outer gasket body (1); An inner gasket body (4) is provided at the lower outer side of the outer gasket body (1). The outer gasket body (1) and the inner gasket body (4) respectively include an aluminum foil layer (7), a cardboard layer (8) and an adhesive layer (9). The circumference of the inner pad body (4) is smaller than that of the outer pad body (1). A silicone airbag (2) is provided on the lower outer side of the outer pad body (1). An inner cavity (6) is provided on the inner side of the silicone airbag (2).

2. The composite multifunctional sealing gasket according to claim 1, characterized in that: The inner gasket body (4) and the outer gasket body (1) are connected by adhesive bonding. The outer gasket body (1) has a silicone arc edge (3) on its outer periphery, and the inner gasket body (4) has a hard arc edge (5) on its outer periphery.

3. The composite multifunctional sealing gasket according to claim 2, characterized in that: The silicone airbag (2) is connected to the outer gasket body (1) by adhesive bonding, and the inner cavity (6) is filled with nitrogen gas.

4. The composite multifunctional sealing gasket according to claim 3, characterized in that: The silicone airbag (2) is thicker than the inner pad body (4), and the silicone airbag (2) is arranged in a ring around the inner pad body (4).

5. A composite multifunctional sealing gasket according to claim 4, characterized in that: The silicone airbag (2) can be deformed by pressure, and the silicone airbag is compressed to a circumference greater than that of the outer pad body (1) after being compressed.

6. The composite multifunctional sealing gasket according to claim 1, characterized in that: A cardboard (8) is provided on the inner side of the aluminum foil layer (7), and an adhesive layer (9) is provided at the connection between the cardboard (8) and the aluminum foil layer (7).

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