A vented cover

Abstract

The application relates to the technical field of bottle caps, and provides a breathable cap body, which comprises an injection-molded cap body, a mounting groove is arranged through the inside of the top of the cap body, a breathable film is fixedly connected to the cap body at the mounting groove, the breathable film is made of polytetrafluoroethylene material, a sealing ring is arranged around the inner wall of the cap body, and the sealing ring is used for sealing a bottle mouth. The application has the advantages that the mounting groove is arranged through the inside of the top of the cap body, and the polytetrafluoroethylene material breathable film is fixedly connected, so that trace gas exchange between the product and the external environment can be realized, the above structure can achieve the sealing effect without an additional gasket, and a controllable breathable function is actively provided, which is not possessed by a traditional sealing gasket.

Description

Technical Field

[0001] This application relates to the technical field of bottle caps, and in particular to a breathable cap body. Background Technology

[0002] Bottled products, especially pharmaceuticals, health supplements, and high-end foods, have extremely high requirements for packaging airtightness to prevent the contents from getting damp, oxidizing, or leaking. Currently, the most widely used sealing method is to use an aluminum-plastic composite film as a sealing gasket. The heat-sealing adhesive on the gasket is melted through methods such as electromagnetic induction heating, thus firmly adhering to the bottle opening to form a highly airtight seal. Users need to remove this sealing gasket when opening the bottle.

[0003] However, for certain special products (such as certain probiotics, live bacteria preparations, or fermented foods), they may need to maintain a small amount of gas exchange with the external environment during storage (such as balancing internal and external pressures and releasing trace amounts of gas generated). The completely airtight aluminum-plastic composite film completely blocks this channel, so further improvements are needed. Utility Model Content

[0004] To address the above problems, this application provides a breathable cover.

[0005] This application provides a breathable cover, which adopts the following technical solution: A breathable cap includes an injection-molded cap body, with an installation groove extending through the top interior of the cap body. A breathable membrane is fixedly connected to the cap body at the installation groove. The breathable membrane is made of polytetrafluoroethylene (PTFE). A sealing ring is wound around the inner wall of the cap body for sealing the bottle opening.

[0006] By adopting the above technical solution, the injection-molded cap body is easy to manufacture; a permeable membrane made of polytetrafluoroethylene material is fixedly connected to the inner top of the cap body through an installation groove, which allows for trace gas exchange between the product and the external environment; a sealing ring for sealing the bottle mouth is wrapped around the inner wall of the cap body, ensuring a tight seal between the cap and the bottle mouth, meeting the product's packaging sealing requirements. This structure achieves a sealing effect without additional gaskets and actively provides controllable ventilation, which is not available with traditional sealing gaskets.

[0007] Preferably, the mounting groove includes, from top to bottom, a first mounting groove and a second mounting groove disposed on the upper surface of the cover body, wherein the diameter of the first mounting groove is larger than the diameter of the second mounting groove, and the breathable membrane includes, from top to bottom, a first part installed in the first mounting groove and a second part passing through the second mounting groove.

[0008] By adopting the above technical solution, the design of the first and second mounting slots of the mounting groove and the design of the first and second parts of the breathable membrane facilitates the installation of the breathable membrane, makes the installation of the breathable membrane on the cover body more stable, helps to ensure the breathable function of the breathable cover, and also improves the fixing effect between the two.

[0009] Preferably, a first adhesive layer is provided between the first part and the inner bottom wall of the first mounting groove.

[0010] By adopting the above technical solution, a first adhesive layer is provided between the first part and the inner bottom wall of the first mounting groove, which can firmly fix the first part of the breathable membrane in the first mounting groove, ensure the stability of the breathable membrane installation, prevent the breathable membrane from loosening or shifting during use, and thus ensure the stable and reliable breathability of the breathable cover. At the same time, the adhesive layer can also enhance the sealing between the breathable membrane and the cover body to a certain extent.

[0011] Preferably, the lower surface of the first part away from the second part has at least one limiting protrusion or a limiting groove formed by indentation.

[0012] By adopting the above technical solution, the limiting protrusion or limiting groove can further accurately position the installation position of the breathable membrane in the first installation groove, ensuring accurate installation of the breathable membrane and guaranteeing the stability of the breathable cover's breathability and sealing performance.

[0013] Preferably, the first part is fixed to the first mounting groove by ultrasonic welding, and the inner bottom wall of the first mounting groove is provided with a plurality of energy-conducting ribs for concentrating ultrasonic energy.

[0014] By adopting the above technical solution, the first part is fixed to the first mounting groove by ultrasonic welding and the bottom wall of the first mounting groove is provided with energy guiding ribs, which can concentrate ultrasonic energy to firmly connect the first part to the first mounting groove, avoiding the risk of adhesive clogging the breathable micropores and chemical migration, ensuring product safety. At the same time, the breathable membrane can realize the exchange of trace amounts of gas between the product and the external environment, and the sealing ring ensures the sealing performance.

[0015] Preferably, the periphery of the first mounting groove is provided with multiple upward-facing hot-riveting posts; the breathable membrane is fixed by a hot-pressing process, and the top of the hot-riveting post is deformed after being heated and melted, pressing and sealing the edge of the breathable membrane.

[0016] By adopting the above technical solutions, the hot riveting and hot pressing processes can avoid the risk of adhesive clogging of breathable micropores and chemical migration, thereby achieving the pressing and sealing of the breathable membrane edges, ensuring breathability while improving product safety and sealing reliability.

[0017] Preferably, the inner top wall of the cover body is provided with an annular groove for installing the sealing ring.

[0018] By adopting the above technical solution, an annular groove for installing the sealing ring is opened on the inner top wall of the cap body, which makes the sealing ring installation more stable and further improves the sealing reliability between the cap and the bottle mouth.

[0019] Preferably, the outer periphery of the cover body is provided with anti-slip texture or raised ridges.

[0020] By adopting the above technical solution, anti-slip textures or raised ridges are provided on the outer periphery of the cap body, which can increase the friction between the hand and the cap body, making it easier for users to open or tighten the bottle cap.

[0021] In summary, this application has the following beneficial effects: 1. The breathable membrane is made of polytetrafluoroethylene material, which can realize trace gas exchange between special products and the external environment, solving the problem that the completely airtight aluminum-plastic composite membrane cannot meet the breathability requirements of special products. 2. The sealing ring wrapped around the inner wall of the cap body is used to seal the bottle mouth, which improves the sealing reliability and meets the high standard sealing requirements. 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 an exploded structural diagram of Embodiment 1 of this application; Figure 3 This is a cross-sectional structural diagram of Embodiment 1 of this application; Figure 4 This is a schematic diagram of the structure of Embodiment 2 of this application; Figure 5 This is a structural schematic diagram of Embodiment 3 of this application.

[0023] Explanation of reference numerals in the attached drawings: 1. Cover body; 11. Mounting groove; 111. First mounting groove; 112. Second mounting groove; 113. Energy guiding rib; 12. Raised ridge; 13. Annular groove; 2. Breathable membrane; 21. First part; 211. Limiting protrusion; 22. Second part; 3. Sealing ring; 4. First adhesive layer. Detailed Implementation

[0024] The following is in conjunction with the appendix Figure 1 - Appendix Figure 5 This application will be described in further detail below.

[0025] This application discloses a breathable cover.

[0026] Example 1: A breathable cover, as shown in the reference Figure 1 , Figure 2The device includes an injection-molded cap body 1. An installation groove 11 is formed through the top interior of the cap body 1. A breathable membrane 2 is fixedly connected to the cap body 1 at the installation groove 11. In this embodiment, the breathable membrane 2 is made of polytetrafluoroethylene (PTFE), which has good chemical stability, corrosion resistance, and breathability. A sealing ring 3 is wound around the inner wall of the cap body 1 to seal the bottle opening.

[0027] The cover body 1 is manufactured using injection molding, and its material can be common plastics such as polypropylene and polyethylene. This injection molding method ensures that the cover body 1 has good strength and molding precision. The outer periphery of the cover body 1 is provided with anti-slip textures or raised ridges 12. The anti-slip textures can be horizontal, vertical, or intersecting lines, and the raised ridges 12 can be continuous or spaced apart. These anti-slip textures or raised ridges 12 increase the friction between the hand and the cover body 1, making it easier for the user to open or tighten the cover. In this embodiment, raised ridges 12 are shown, and several raised ridges 12 are spaced apart around the axis of the cover body 1.

[0028] Reference Figure 2 , Figure 3 The mounting groove 11, from top to bottom, includes a first mounting groove 111 disposed on the upper surface of the cover body 1 and a second mounting groove 112 passing through the cover body 1. The diameter of the first mounting groove 111 is larger than the diameter of the second mounting groove 112. The breathable membrane 2, from top to bottom, includes a first part 21 installed in the first mounting groove 111 and a second part 22 passing through the second mounting groove 112. The first part 21 can be circular, with a diameter adapted to the first mounting groove 111. The shape of the second part 22 is adapted to the second mounting groove 112, and is usually cylindrical. The upper surface of the first part 21 is provided with at least one anti-slip texture, which can be straight, wavy, etc., to facilitate the user's installation of the breathable membrane 2.

[0029] The installation between the breathable membrane 2 and the cover body 1 can be as follows: Figure 2 As shown, a first adhesive layer 4 is provided between the inner bottom wall of the first part 21 and the first mounting groove 111. The first adhesive layer 4 can be a common adhesive, such as polyurethane adhesive.

[0030] Back Figure 3 In this design, the inner top wall of the cap body 1 has an annular groove 13 for installing the sealing ring 3. The shape of the annular groove 13 is adapted to the sealing ring 3, and it is usually annular. The sealing ring 3 can be made of elastic materials such as rubber, and has good sealing performance. When the cap body 1 is screwed onto the bottle mouth, the sealing ring 3 will be compressed, thus tightly fitting the bottle mouth.

[0031] The implementation principle of the breathable cap in this application embodiment is as follows: This breathable cap, by setting a breathable membrane 2 and a sealing ring 3 on the cap body 1, utilizes the breathable membrane 2 to achieve a small amount of gas exchange between the special product and the outside world, thus meeting the breathability requirements of the special product. At the same time, the setting of the sealing ring 3 ensures good sealing performance between the cap and the bottle mouth, especially significantly improving the protection against liquid leakage.

[0032] Example 2: Reference Figure 4 The difference from Embodiment 1 is that the lower surface of the first part 21, away from the second part 22, has at least one limiting protrusion 211 protruding out, or a limiting groove formed inward. The limiting protrusion 211 can be circular, square, or similar in shape, as can the limiting groove. These limiting protrusions 211 or limiting grooves can cooperate with corresponding grooves or protrusions on the inner bottom wall of the first mounting groove 111 to play a role in positioning and preventing errors. In this embodiment, the limiting protrusion 211 is specifically shown.

[0033] Example 3: Reference Figure 5 The difference from Embodiment 1 is that the first part 21 is fixed to the first mounting groove 111 by ultrasonic welding. Specifically, the inner bottom wall of the first mounting groove 111 is provided with a plurality of energy-conducting ribs 113 for concentrating ultrasonic energy. The energy-conducting ribs 113 can be triangular, trapezoidal, or other shapes. During the ultrasonic welding process, the energy-conducting ribs 113 can concentrate the ultrasonic energy, so that the first part 21 and the first mounting groove 111 are better welded together.

[0034] Alternatively, multiple upward-facing hot-riveting posts can be provided around the first mounting groove 111. The breathable membrane 2 is fixed by a hot-pressing process. The top of the hot-riveting post is heated and melted, deforming and pressing and sealing the edge of the breathable membrane 2. The number of hot-riveting posts can be set according to actual needs.

[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 breathable cover, characterized in that: The device includes an injection-molded cap body (1), with an installation groove (11) extending through the top of the cap body (1). A breathable membrane (2) is fixedly connected to the cap body (1) at the installation groove (11). The breathable membrane (2) is made of polytetrafluoroethylene material. A sealing ring (3) is wrapped around the inner wall of the cap body (1). The sealing ring (3) is used to seal the bottle mouth.

2. The breathable cover according to claim 1, characterized in that: The mounting groove (11) includes, from top to bottom, a first mounting groove (111) and a second mounting groove (112) disposed on the upper surface of the cover body (1). The diameter of the first mounting groove (111) is larger than the diameter of the second mounting groove (112). The breathable membrane (2) includes, from top to bottom, a first part (21) installed in the first mounting groove (111) and a second part (22) passing through the second mounting groove (112).

3. A breathable cover according to claim 2, characterized in that: A first adhesive layer (4) is provided between the inner bottom wall of the first part (21) and the first mounting groove (111).

4. A breathable cover according to claim 3, characterized in that: The first part (21) has at least one limiting protrusion (211) protruding from the lower surface away from the second part (22), or a limiting groove formed by indentation.

5. A breathable cover according to claim 2, characterized in that: The first part (21) is fixed to the first mounting groove (111) by ultrasonic welding. The inner bottom wall of the first mounting groove (111) is provided with a number of energy-conducting ribs (113) for concentrating ultrasonic energy.

6. A breathable cover according to claim 2, characterized in that: The first mounting groove (111) is provided with multiple upward hot riveting posts around its perimeter; the breathable membrane (2) is fixed by hot pressing process, and the top of the hot riveting post is deformed after being heated and melted, pressing and sealing the edge of the breathable membrane (2).

7. A breathable cover according to claim 1, characterized in that: The inner top wall of the cover body (1) is provided with an annular groove (13) for the installation of the sealing ring (3).

8. A breathable cover according to claim 1, characterized in that: The outer periphery of the cover body (1) is provided with anti-slip texture or protrusions (12).

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