Double-sided pull ear gasket

Abstract

The application relates to the technical field of gasket sealing, and provides a double-face pull-ear gasket which comprises a gasket body and an upper film layer arranged above the gasket body, the middle part of the upper film layer is fixedly connected with the gasket body to form a fixed part, the upper film layer is in an unbonded state between the two sides of the fixed part and the gasket body to form two pull-ear parts, the lower surface of the pull-ear part is bonded with a connecting film, and the lower end of the connecting film is extended to be bonded with the upper surface of the gasket body. According to the application, the connecting film is bonded with the lower surface of the pull-ear part, the lower end of the connecting film is extended to be bonded with the upper surface of the gasket body, the overall strength is increased, the situation that the upper film layer is torn open alone is reduced, only the uppermost film layer is torn or separated, the lower main body structure is still sealed on the bottle mouth, effective opening is realized, and the problem that the uppermost film layer cannot be effectively broken and sealed due to the limited strength of the uppermost film layer and uneven bonding force with the lower layer in the prior art is solved.

Description

Technical Field

[0001] This application relates to the technical field of gasket sealing, and in particular to a double-sided pull lug gasket. Background Technology

[0002] In existing technologies, gaskets are typically placed at the bottle opening to achieve an effective seal and facilitate opening. A common practice is to create a half-ear gasket, which generally consists of a central adhesive section and an unadhesive pull tab section. This divides the topmost connecting layer into a movable part and a bonded part. Users attempt to open the entire sealing gasket by tearing off the unbonded portion. Alternatively, some gaskets employ a multi-layered composite structure, where a portion of the top film layer (the pull tab) is not bonded to the lower layers; users break the seal by tearing off this portion.

[0003] Because the strength of the top layer is limited and the bonding force with the lower layers is uneven, it is very easy for only the top layer (especially the adhesive part) to be torn or separated when it is torn, while the main structure such as the foam layer and barrier layer below remains intact and sealed at the bottle opening. Therefore, further improvements are needed. Utility Model Content

[0004] To address the above problems, this application provides a double-sided pull tab pad.

[0005] This application provides a double-sided pull tab washer, which adopts the following technical solution: A double-sided pull tab gasket includes a gasket body and an upper film layer disposed above the gasket body. The middle part of the upper film layer is fixedly connected to the gasket body to form a fixing part. The upper film layer is not bonded to the gasket body on both sides of the fixing part to form two pull tabs. A connecting film is bonded to the lower surface of the pull tabs, and the lower end of the connecting film extends to bond with the upper surface of the gasket body.

[0006] By adopting the above technical solution, the middle of the upper film layer and the gasket body are fixed to both sides, with the two sides not bonded to form a pull tab. The lower end of the connecting film bonded to the lower surface of the pull tab extends to bond with the upper surface of the gasket body. This increases the connection strength between the pull tab and the gasket body, reducing the possibility of only tearing the upper film layer while the gasket body remains sealed at the bottle opening when the pull tab is pulled. This allows for effective opening of the gasket, improving the success rate of opening the seal. Furthermore, the addition of a pull tab compared to existing technologies further enhances the success rate of opening the seal.

[0007] Preferably, the connection between the connecting membrane and the pull tab is a first connecting part, and the first connecting part is provided with an anti-slip part.

[0008] By adopting the above technical solution, an anti-slip part is set at the first connection between the connecting film and the pull tab, which can increase the friction between the pull tab and the connecting film, making it easier for users to tear and pull the pull tab to open the gasket, reducing the chance of hand slippage when tearing, and at the same time, the overall strength is increased by combining with the connecting film, further reducing the chance of only the top layer of film being torn or separated, so that the gasket can be opened more effectively.

[0009] Preferably, the anti-slip part is an inwardly recessed groove or an outwardly arched protrusion.

[0010] By adopting the above technical solution, and by setting grooves or protrusions, the friction between the hand and the pull tab can be effectively increased, making it easier to apply force when tearing the pull tab to open the pad, making the operation more labor-saving and convenient, and further improving the user experience.

[0011] Preferably, the upper surface of the pull ear is also provided with an anti-slip part.

[0012] By adopting the above technical solution, an anti-slip part is set on the upper surface of the pull tab, which, together with the connecting film, increases the overall strength of the double-sided pull tab pad, reduces the need to tear the upper film layer separately, and the anti-slip part can increase the friction, making it easier for users to tear and pull the pull tab opening pad.

[0013] Preferably, the gasket body comprises, from top to bottom, a foam layer, an aluminum layer, a barrier layer and a lower film layer, and the connecting film is connected to the foam layer.

[0014] By adopting the above technical solution, the connecting membrane and the foaming layer are connected, making the connection of the connecting membrane more stable, further enhancing the overall strength, and reducing the probability of the upper membrane layer being torn apart individually.

[0015] Preferably, a reinforcing portion is provided between the connecting membrane and the foaming layer.

[0016] By adopting the above technical solution, a reinforcing part is set between the connecting film and the foaming layer, which can further enhance the connection strength and stability between the connecting film and the foaming layer, making the overall structure of the double-sided pull tab gasket more robust. When opening the bottle mouth by tearing the pull tab, it can more effectively prevent the upper film layer from being torn apart separately, thus improving the effectiveness and reliability of the gasket's seal.

[0017] Preferably, the reinforcing part is a groove or protrusion provided on the upper surface of the foam layer.

[0018] By adopting the above technical solution, grooves or protrusions are pressed into the foam layer, and the connecting part is made into a matching protrusion or groove to form a reinforcing part, thereby improving the connection strength between the two.

[0019] Preferably, the cross-section of the fixing part is arc-shaped or wavy.

[0020] By adopting the above technical solution, the cross-section of the fixing part is set in an arc or wave shape, which can further enhance the connection stability between the upper film layer and the gasket body, making the tearing process smoother and more effective in opening the seal.

[0021] In summary, this application has the following beneficial effects: A connecting film is bonded to the lower surface of the pull tab, and the lower end of the connecting film extends to bond with the upper surface of the gasket body. This increases the overall strength and reduces the need to tear the top film layer separately. It also reduces the situation where only the top film layer is torn or separated while the main structure below remains sealed at the bottle opening, thus achieving effective opening. This solves the problem in the prior art where the limited strength of the top film layer and uneven bonding force with the lower layer prevent effective opening when tearing. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this application; Figure 2 This is a side view of Embodiment 1 of this application; Figure 3 This is a schematic diagram of the overall structure of Embodiment 2 of this application; Figure 4 This is another structural schematic diagram of the anti-slip part and the reinforcing part in Embodiment 2 of this application; Figure 5 This is a schematic diagram of the reinforcing membrane structure in Embodiment 2 of this application; Figure 6 This is a schematic diagram of the fixing part in Embodiment 3 of this application.

[0023] Explanation of reference numerals in the attached drawings: 1. Gasket body; 11. Foam layer; 12. Aluminum layer; 13. Barrier layer; 14. Lower film layer; 2. Upper film layer; 21. Fixing part; 22. Pulling ear part; 3. Connecting film; 31. First connecting part; 32. Second connecting part; 33. Anti-slip part; 34. Reinforcing part; 341. Reinforcing film. Detailed Implementation

[0024] The following is in conjunction with the appendix Figure 1 - Appendix Figure 6 This application will be described in further detail below.

[0025] This application discloses a double-sided pull tab pad.

[0026] Example 1: A double-sided pull tab pad, as shown in the reference. Figure 1 , Figure 2The device includes a gasket body 1 and an upper film layer 2 disposed above the gasket body 1. The middle portion of the upper film layer 2 is fixedly connected to the gasket body 1 to form a fixing part 21. The upper film layer 2 is not bonded to the gasket body 1 on either side of the fixing part 21, forming two pull tabs 22. A connecting film 3 is bonded to the lower surface of the pull tabs 22, and the lower end of the connecting film 3 extends to and is bonded to the upper surface of the gasket body 1. This enhances the overall strength of the pull tab gasket, reduces the likelihood of only the uppermost film layer being torn or separated, and achieves effective opening. This is because the connecting film 3 more firmly connects the pull tabs 22 to the gasket body 1, allowing the entire gasket body 1 to detach from the bottle opening more effectively during tearing.

[0027] The gasket body 1 comprises, from top to bottom, a foam layer 11, an aluminum layer 12, a barrier layer 13, and a lower film layer 14, with the connecting membrane 3 connected to the foam layer 11. In this embodiment, the foam layer 11 is typically a PE foam film, possessing certain elasticity and cushioning properties, allowing for better fit to the bottle opening and providing a sealing effect. The aluminum layer 12 effectively blocks oxygen and moisture, protecting the contents of the bottle from external environmental influences. The barrier layer 13 is generally made of materials such as paper, further enhancing the barrier effect. The lower film layer 14 is also commonly made of materials such as polytetrafluoroethylene, serving both protective and sealing functions.

[0028] The upper film layer 2 is typically made of materials such as polytetrafluoroethylene (PTFE) and is usually circular in shape to fit the bottle opening. The center of the upper film layer 2 is fixedly connected to the gasket body 1 by means of adhesive application, forming a fixing part 21. The fixing part 21 can be provided by uniform adhesive application or dotted adhesive application, as long as it ensures a firm connection between the upper film layer 2 and the gasket body 1. Alternatively, the upper film layer 2 can be replaced with other plastic films with a certain degree of flexibility and strength, such as polyethylene film.

[0029] The pull tab 22 is the part of the upper film layer 2 that is not bonded to the gasket body 1. It is generally fan-shaped or nearly fan-shaped, making it easy for users to pinch and tear with their fingers. The lower surface of the pull tab 22 is bonded to the connecting film 3 using adhesive or other methods. The bonding method can be full-area adhesive application or intermittent adhesive application. When not in use, the pull tab 22 is in its naturally extended state and has a certain gap with the gasket body 1.

[0030] The connecting film 3 is an additional layer, made of polytetrafluoroethylene (PTFE) similar to the upper film layer 2, or other plastic films with a certain degree of toughness. The shape of the connecting film 3 depends on the shape of the pull tab 22, and is usually elongated. One end of the connecting film 3 is bonded to the lower surface of the pull tab 22, and the other end extends to and is bonded to the upper surface of the gasket body 1. Specifically, it is connected to the foam layer 11 by adhesive or other means; the connection can be a full-area bond or a partial bond. Sufficient strength must be ensured at the bonding points between the connecting film 3 and the pull tab 22 and the gasket body 1 to prevent detachment during tearing. The presence of the connecting film 3 enhances the connection strength between the pull tab 22 and the gasket body 1, allowing the entire gasket body 1 to more effectively detach from the bottle opening when the pull tab 22 is torn.

[0031] The implementation principle of the double-sided pull tab gasket in this embodiment is as follows: By adding a connecting film 3, the pull tab 22 is more firmly connected to the gasket body 1, enhancing the overall strength of the pull tab gasket. During tearing, the connecting film 3 can better transmit the pulling force, preventing only the uppermost film layer from being torn or separated, allowing the entire gasket body 1 to smoothly detach from the bottle opening and achieve effective opening. Compared with existing technologies, this greatly improves the success rate of bottle opening opening and enhances the user experience.

[0032] Example 2: Reference Figure 3 The difference from Embodiment 1 is that the connection between the connecting film 3 and the pull tab 22 is a first connecting part 31, and the connection between the connecting film 3 and the foam layer 11 is a second connecting part 32. An anti-slip part 33 is provided on the first connecting part 31, and an anti-slip part 33 is also provided on the upper surface of the pull tab 22. The anti-slip part 33 is an inwardly recessed groove, or... Figure 4 As shown, the protrusions arch outwards. The anti-slip part 33 increases the friction between the fingers and the pull tab 22 and the connecting membrane 3, making it easier and less strenuous for the user to tear. The anti-slip part 33 can be round, square, strip-shaped, or other shapes, and its distribution can be uniform or regularly spaced.

[0033] Furthermore, a reinforcing part 34 is provided on the second connecting part 32. The reinforcing part 34 is a groove or a protrusion provided on the upper surface of the foam layer 11, respectively corresponding to... Figure 3 and Figure 4 In other embodiments, such as... Figure 5As shown, the reinforcing part 34 can also be an additional reinforcing membrane 341. The reinforcing membrane 341 is respectively disposed between the first connecting part 31 and the second connecting part 32. Several reinforcing membranes 341 can be provided as needed, or it can be a reinforcing rib or other structure added between the connecting membrane 3 and the foam layer 11. The setting of the reinforcing part 34 further enhances the connection strength between the connecting membrane 3 and the foam layer 11, so that during the tearing process, the connecting membrane 3 can more stably drive the foam layer 11 and the entire gasket body 1 to detach from the bottle opening.

[0034] Example 3: Reference Figure 6 The difference from Embodiment 1 is that the cross-section of the fixing part 21 is arranged in an arc or wave shape. This special arrangement can increase the elasticity and buffering performance of the fixing part 21, and can better disperse stress when subjected to tearing force, preventing the upper film layer 2 from separating from the gasket body 1 too early at the fixing part 21, making the tearing process smoother, and also further enhancing the overall stability of the pull tab gasket.

[0035] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A double-sided pull tab pad, characterized in that: The device includes a gasket body (1) and an upper film layer (2) disposed above the gasket body (1). The middle part of the upper film layer (2) is fixedly connected to the gasket body (1) to form a fixing part (21). The upper film layer (2) is located on both sides of the fixing part (21) and is not bonded to the gasket body (1) to form two pull tabs (22). A connecting film (3) is bonded to the lower surface of the pull tabs (22). The lower end of the connecting film (3) extends to bond to the upper surface of the gasket body (1).

2. The double-sided pull tab as described in claim 1, characterized in that: The connection between the connecting membrane (3) and the pull ear (22) is a first connecting part (31), and an anti-slip part (33) is provided on the first connecting part (31).

3. A double-sided pull tab as described in claim 2, characterized in that: The anti-slip part (33) is an inwardly recessed groove or an outwardly arched protrusion.

4. A double-sided pull tab as described in claim 2, characterized in that: The upper surface of the pull ear (22) is also provided with an anti-slip part (33).

5. A double-sided pull tab pad according to claim 1, characterized in that: The gasket body (1) includes, from top to bottom, a foam layer (11), an aluminum layer (12), a barrier layer (13) and a lower film layer (14), and the connecting film (3) is connected to the foam layer (11).

6. A double-sided pull tab pad according to claim 5, characterized in that: A reinforcing part (34) is provided between the connecting membrane (3) and the foam layer (11).

7. A double-sided pull tab as described in claim 6, characterized in that: The reinforcing part (34) is a groove or protrusion provided on the upper surface of the foam layer (11).

8. A double-sided pull tab pad according to claim 1, characterized in that: The cross-section of the fixing part (21) is arranged in an arc shape or a wave shape.

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