Side opening vented gasket

Abstract

The application relates to the technical field of packaging bottles, and provides a side-opening type breathable gasket, which comprises an inner sealing layer, a flow guide layer and an outer sealing layer, the inner sealing layer is provided with micropores, and the flow guide layer is provided with a waterproof and breathable layer on the circumferential side edge. The side-opening type breathable gasket can make the gas in the bottle enter through the micropores of the inner sealing layer, the waterproof and breathable layer on the circumferential side edge of the flow guide layer can realize gas permeation and prevent liquid from leaking out, the problem that the sealing is damaged due to the bottle body swelling is effectively solved, and the gas permeation performance of the gasket is improved.

Description

Technical Field

[0001] This application relates to the field of packaging bottle technology, and in particular to a side-opening breathable gasket. Background Technology

[0002] Since bottle caps are an important part of various industries, changes in downstream consumer market demand will directly affect the market demand for bottle caps. The vigorous development of various industries has led to increasingly higher requirements for product packaging, which in turn drives the demand for bottle cap products.

[0003] When the bottle cap is tightened, the rubber gasket at the bottom of the cap presses against the bottle opening, thus creating a seal. The cap gasket, as a seal, is the last line of defense against external bacteria entering packaged products such as food, beverages, and hospital products.

[0004] While existing bottle cap gaskets play a role in sealing, they are not very effective at allowing air to pass through. When packaging food, the expansion of the bottle can cause the seal to bulge, which can lead to seal breakage and affect the packaging process. Utility Model Content

[0005] To reduce the risk of gasket breakage when food bloats, this application provides a side-opening breathable gasket.

[0006] The side-opening breathable pad provided in this application adopts the following technical solution: A side-opening breathable pad includes an inner sealing layer, a flow guiding layer, and an outer sealing layer. The inner sealing layer has micropores, and the flow guiding layer has a waterproof and breathable layer on its peripheral edge.

[0007] By adopting the above technical solution, the micropores of the inner sealing layer allow gas inside the bottle to enter, and the waterproof and breathable layer on the periphery of the flow guide layer can achieve air permeability and prevent liquid leakage, effectively solving the problem of bottle swelling causing seal damage and improving the breathability of the gasket.

[0008] Optionally, the flow guide layer has a gas collection groove on the side near the inner sealing layer, and the gas collection groove is connected to the outside through the flow guide groove.

[0009] By adopting the above technical solution, the gas inside the bottle can be stored in the gas collection tank first, and then discharged to the outside through the guide channel. This effectively solves the problems of poor air permeability of existing bottle cap gaskets and bottle swelling leading to seal damage, and improves the sealing and stability of the packaging.

[0010] Optionally, the flow guiding layer includes a flow guiding base layer and a sealing base layer that is adhered to the flow guiding base layer. Both the gas collecting groove and the flow guiding groove are formed in the flow guiding base layer. The sealing base layer covers the surface of all flow guiding grooves and has a connecting groove that communicates with the gas collecting groove.

[0011] By adopting the above technical solution, the gas inside the bottle opening can only enter the gas collection groove through the connecting groove; at the same time, it avoids the situation where the gasket diameter is larger than the bottle opening diameter, and the outside gas enters the guide layer through the inner sealing layer and then enters the bottle body through the guide layer, effectively ensuring the one-way flow of gas inside the bottle and outside gas, and improving the air permeability and sealing performance.

[0012] Optionally, the longitudinal cross-sectional shape of the guide channel is V-shaped.

[0013] By adopting the above technical solution, when the bottle mouth is squeezed by external force, the V-shaped inclined surface will convert the vertical pressure into a component force along the inclined surface, reduce the local stress peak, and extend the service life of the gasket.

[0014] Optionally, the cross-sectional shape of the gas collecting groove is a regular hexagon.

[0015] By adopting the above technical solution, the strength of the gasket can be increased, and deformation during compression can be avoided.

[0016] Optionally, the depth of the gas collecting groove is greater than the depth of the flow guiding groove.

[0017] By adopting the above technical solution, the depth of the gas collection tank is greater than the depth of the guide tank, so that the gas can be collected first and then gathered in the gas collection tank to prepare for subsequent guidance to the outside.

[0018] Optionally, the flow guide layer is made of paper material.

[0019] By adopting the above technical solution, the flow guide layer is made of paper material. Paper material has a certain degree of air permeability, which allows the gas in the bottle to flow out to the outside after entering the flow guide layer through the inner sealing layer, and reduces production costs.

[0020] Optionally, the inner sealing layer is made of tetrachloroethylene.

[0021] By adopting the above technical solution, the inner sealing layer is made of tetrafluoroethylene (PTFE), whose microporous structure allows gas molecules to pass freely while blocking liquids and small particles. When gas is generated inside the bottle due to temperature changes or chemical reactions, the micropores can quickly release pressure, preventing the container from bursting or collapsing due to pressure imbalance.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. The micropores of the inner sealing layer allow gas inside the bottle to enter, while the waterproof and breathable layer on the periphery of the flow guide layer allows for air permeability and prevents liquid leakage, effectively solving the problem of bottle swelling causing seal damage and improving the breathability of the gasket. 2. By setting the flow guide layer as both the flow guide base layer and the sealing base layer, the gas inside the bottle opening can only enter the gas collection groove through the connecting groove; at the same time, it avoids the situation where the gasket diameter is larger than the bottle opening diameter, and the outside gas enters the flow guide layer through the inner sealing layer and then enters the bottle body through the flow guide layer, effectively ensuring one-way flow between the gas inside the bottle and the outside gas, and improving the air permeability and sealing performance. Attached Figure Description

[0023] Figure 1 This is a partial cross-sectional view of Embodiment 1; Figure 2 This is a partial cross-sectional view of Embodiment 2; Figure 3 This is a schematic diagram of the flow-guiding base layer in Example 2.

[0024] Explanation of reference numerals in the attached drawings: 1. Inner sealing layer; 2. Flow guiding layer; 21. Flow guiding base layer; 22. Sealing base layer; 23. Air collection groove; 24. Flow guiding groove; 3. Outer sealing layer; 4. Waterproof and breathable layer. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0026] Example 1: This application discloses a side-opening breathable pad.

[0027] Reference Figure 1 A side-opening breathable gasket includes an inner sealing layer 1, a flow guiding layer 2, and an outer sealing layer 3. The inner sealing layer 1, the flow guiding layer 2, and the outer sealing layer 3 are stacked sequentially, which allows the gasket to ensure both sealing performance and breathability.

[0028] The inner sealing layer 1 is made of tetrachloroethylene material and has micropores. Its micropore structure allows gas molecules to pass through freely, but blocks liquids and small particles. The tetrachloroethylene material has stable chemical properties and strong corrosion resistance, which can ensure the performance of the inner sealing layer 1 in various environments.

[0029] The flow guiding layer 2 is made of paper material, which is low in cost, easy to process, and has a certain degree of breathability. A waterproof and breathable layer 4 is pasted on the periphery of the flow guiding layer 2. The breathable and waterproof membrane is made of polytetrachloroethylene material, and the breathable and waterproof membrane extends towards the inner sealing layer 1 and the outer sealing layer 3 on both sides and is pasted to the inner / outer sealing layer 3.

[0030] The outer sealing layer 3 serves to further seal the bottle, preventing external impurities and moisture from entering. The outer sealing layer 3 can be made of airtight rubber or pure aluminum foil, providing excellent sealing performance and ensuring a tight fit to the bottle opening.

[0031] The implementation principle of Embodiment 1 of this application is as follows: When gas is generated inside the bottle, the gas enters the flow guiding layer 2 through the micropores of the inner sealing layer 1, and then the structure of the flow guiding layer 2 guides the gas to the outside. At the same time, the outer sealing layer 3 can prevent external impurities from entering the bottle, effectively avoiding the problem of the bottle being damaged due to gas expansion.

[0032] Example 2: This application discloses a side-opening breathable pad.

[0033] Reference Figure 2 The difference between Embodiment 2 and Embodiment 1 is that: the flow guiding layer 2 includes a flow guiding base layer 21 and a sealing base layer 22, which are bonded together; the flow guiding base layer 21 is bonded to the outer sealing layer 3, and the sealing base layer 22 is bonded to the inner sealing layer 1; both the flow guiding base layer 21 and the sealing base layer 22 are made of air-impermeable materials such as plastic sheet; the flow guiding base layer 21 has an air collecting groove 23 and a flow guiding groove 24 on the side near the sealing base layer 22, and both the air collecting groove 23 and the flow guiding groove 24 are engraved by a CNC engraving machine.

[0034] In this embodiment, the depth of the gas collecting groove 23 is the same as the depth of the guide groove 24; in other embodiments, the depth of the gas collecting groove 23 is greater than the depth of the guide groove 24.

[0035] Reference Figure 3 The cross-section of the gas collecting groove 23 is a regular hexagon, and the longitudinal section depth of the guide groove 24 is V-shaped. When the bottle mouth is squeezed by external force, the V-shaped inclined surface and the regular hexagonal gas collecting groove 23 can improve the rigidity of the gasket, reduce the local stress peak, and extend the service life of the gasket.

[0036] The implementation principle of Embodiment 2 of this application is as follows: After the gasket is used to cover the bottle mouth, the gas inside the bottle mouth can only enter the gas collection groove 23 through the connecting groove; at the same time, it avoids the situation where the diameter of the gasket is larger than the diameter of the bottle mouth, and the outside gas enters the guide layer 2 through the inner sealing layer 1 and then enters the bottle body through the guide layer 2, effectively ensuring the one-way flow of gas inside the bottle and outside gas, and improving the air permeability and sealing performance.

[0037] The above are preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made to the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A side opening vented gasket, characterized by: It includes an inner sealing layer (1), a flow guiding layer (2) and an outer sealing layer (3). The inner sealing layer (1) has micropores, and the flow guiding layer (2) has a waterproof and breathable layer (4) on its peripheral edge.

2. The side opening vented gasket of claim 1, wherein: The flow guide layer (2) has an air collection groove (23) on the side near the inner sealing layer (1), and the air collection groove (23) is connected to the outside through the flow guide groove (24).

3. The side-opening breathable pad according to claim 2, characterized in that: The flow guiding layer (2) includes a flow guiding base layer (21) and a sealing base layer (22) that is bonded to the flow guiding base layer (21). The flow guiding base layer (21) is bonded to the outer sealing layer (3). The gas collecting groove (23) and the flow guiding groove (24) are both formed on the flow guiding base layer (21). The sealing base layer (22) covers the surface of all the flow guiding grooves (24). The sealing base layer (22) has a connecting groove that communicates with the gas collecting groove (23).

4. The side-opening breathable pad according to claim 2, characterized in that: The longitudinal cross-sectional shape of the guide channel (24) is V-shaped.

5. The side-opening breathable pad according to claim 2, characterized in that: The cross-sectional shape of the gas collecting groove (23) is a regular hexagon.

6. The side-opening breathable pad according to claim 2, characterized in that: The depth of the gas collecting groove (23) is greater than the depth of the flow guiding groove (24).

7. The side opening venting gasket of claim 1, wherein: The flow guide layer (2) is made of paper material.

8. The side-opening breathable pad according to claim 1, characterized in that: The inner sealing layer (1) is made of tetrachloroethylene.

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