Medicinal polypropylene bottle cap with high sealing performance
By using threaded connections between the inner and outer caps, silicone pillar support, and annular ring design, the problem of insufficient sealing of pharmaceutical polypropylene bottle caps is solved, achieving stable isolation of medicines and convenient dispensing, thus improving sealing effect and ease of operation.
Patent Information
- Application Number
- CN202520829018.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-28
- Publication Date
- 2026-03-20
- Estimated Expiration
- 2035-04-28
AI Technical Summary
Existing pharmaceutical polypropylene bottle caps have a simple sealing structure, which is insufficient to meet the needs of quantitative and rapid drug dispensing, and cannot effectively prevent drugs from getting damp or oxidized.
A high-sealing pharmaceutical polypropylene bottle cap was designed, which adopts a threaded connection between the inner and outer caps. The inner cap has a sealing gasket and a through hole, while the outer cap has a silicone pillar. Combined with an annular ring and anti-slip stripes, it achieves a standardized and stable connection and enhances the sealing effect.
It achieves initial isolation between medicines and the external environment, ensures sealing stability, supports quantitative dispensing and prevents medicine waste, and improves sealing effect and ease of operation.
Smart Images

Figure CN224014391U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a medicine bottle cap technical field, concretely relates to a high sealing property medical polypropylene bottle cap. BACKGROUND
[0002] The polypropylene bottle cap is a bottle cap made of polypropylene material, which is characterized by light weight, durability and low price, and is widely used in food, cosmetics, medicine and other industries.
[0003] Through the retrieval, patent application No. CN202323191734.6 discloses a quick installation type medicine bottle cap, although the device is helpful to realize the quick installation of the bottle cap and the medicine bottle by setting the unique structure when in use. But the sealing structure of the device is relatively simple when in use, and it is difficult to cope with the use of quantitative medicine taking and quick medicine taking, and cannot effectively prevent the medicine from being damp, oxidized and the like. UTILITY MODEL CONTENT
[0004] In view of the deficiencies of the prior art, the utility model provides a high sealing property medical polypropylene bottle cap, which solves the problems proposed in the background art.
[0005] The utility model solves the technical problems in the above scheme as follows:
[0006] A high sealing property medical polypropylene bottle cap, comprising a medicine bottle, wherein an inner cap and an outer cap are arranged on the medicine bottle;
[0007] A sealing gasket is sleeved in the inner cap, and a through hole is formed in the sealing gasket;
[0008] A silica gel column is attached and installed on the inner wall of the outer cap.
[0009] On the basis of the above technical scheme, the utility model can also be improved as follows.
[0010] Further, inner threads are formed in the inner cap and the outer cap, and outer threads are formed on the medicine bottle and the inner cap.
[0011] The beneficial effects of the above further scheme are as follows:
[0012] The inner cap and the outer cap are provided with inner threads, and the medicine bottle and the inner cap are provided with outer threads, so that the threaded connection provides a standardized and stable connection path for the assembly of the bottle cap and the medicine bottle. The inner threads of the inner cap cooperate with the outer threads of the medicine bottle, so that the depth of the inner cap rotating into the medicine bottle can be accurately controlled, the consistency of each assembly is ensured, and the stability of the sealing between the inner cap and the medicine bottle is ensured.
[0013] Further, the inner cap is installed on the outer threads of the medicine bottle through the inner threads, and the outer cap is installed on the outer threads of the outer cap through the inner threads.
[0014] The beneficial effects of the above further scheme are:
[0015] The inner cap is screwed into the medicine bottle to achieve the initial closure of the medicine bottle, and the threaded connection between the inner cap and the medicine bottle forms a good sealing effect, which preliminarily isolates the medicine from the external environment. The outer cap is installed on the inner cap through threads, which further strengthens the overall sealing structure. When the outer cap is opened, personnel can take medicine quantitatively through the through hole on the inner cap sealing gasket, avoiding pouring too much at one time, and the inner cap can be opened again to pour and take more medicine.
[0016] Further, the inner wall top end face of the inner cap is provided with an annular ring, and the annular ring limits the medicine bottle.
[0017] The beneficial effects of the above further scheme are:
[0018] When the annular ring limits the bottle opening of the medicine bottle, the annular ring can be tightly closed on the bottle opening.
[0019] Further, the silica gel column is slidably sleeved in the through hole of the sealing gasket, and the silica gel column expands the sealing gasket.
[0020] The beneficial effects of the above further scheme are:
[0021] When the outer cap is screwed on the inner cap, the silica gel column slides downward along the through hole of the sealing gasket, and in this process, the silica gel column generates uniform expansion force on the surrounding sealing gasket by virtue of its own elasticity. This expansion effect enables the sealing gasket to be more tightly attached to the inner wall of the bottle opening of the medicine bottle, filling the possible small gaps and significantly improving the sealing effect. At the same time, the sealing gasket is sleeved on the inner cap to avoid loosening and falling during reciprocating rotation.
[0022] Further, the outer side wall of the outer cap is provided with anti-slip stripes, and the anti-slip stripes are uniformly distributed along the circumferential direction of the outer cap.
[0023] The beneficial effects of the above further scheme are:
[0024] The design of anti-slip stripes greatly improves the operation convenience and reliability of the user when opening and closing the bottle cap. In actual use scenarios, especially when the user's hands have sweat, water stains, or the medicine storage environment is relatively humid, the smooth surface of the bottle cap can easily cause the hands to slip, making it difficult to rotate the bottle cap. The uniformly distributed anti-slip stripes increase the friction between the outer cap 3 and the user's hands, allowing the user to hold the outer cap 3 more easily and stably, accurately apply the rotation force, and smoothly complete the opening and closing action of the bottle cap.
[0025] The utility model provides a kind of high sealing performance medical polypropylene bottle cap. With following beneficial effects:
[0026] The inner cap and the outer cap are provided with inner threads, the medicine bottle and the inner cap are provided with outer threads, the threaded connection provides a standardized and stable connection path for the assembly of the bottle cap and the medicine bottle, can accurately control the depth of the inner cap screwed into the medicine bottle, ensure the consistency of each assembly, and ensure the stability of the seal between the inner cap and the medicine bottle.
[0027] The inner cap is screwed into the medicine bottle to achieve initial closure, and the threaded connection with the medicine bottle forms a good sealing effect, which preliminarily isolates the medicine from the external environment; the outer cap is installed on the inner cap through threads, further strengthening the overall sealing structure.
[0028] When the outer cap is opened, personnel can take medicine quantitatively through the through hole on the inner cap sealing gasket, avoid pouring too much at one time, and pour more medicine for taking when the inner cap is opened again, which is convenient for users to take medicine according to actual needs.
[0029] The annular ring at the top of the inner wall of the inner cap limits the bottle opening of the medicine bottle, can be closely attached to the bottle opening, and makes the closure of the bottle opening more accurate and compact.
[0030] When the outer cap is screwed on the inner cap, the silica gel column slides downward along the through hole of the sealing gasket, and generates uniform opening force on the peripheral sealing gasket by relying on its own elasticity, so that the sealing gasket is more closely attached to the inner wall of the bottle opening of the medicine bottle, fills the small gap, and significantly improves the sealing effect. At the same time, the sealing gasket is sleeved on the inner cap, which can avoid loosening and falling during reciprocating rotation. BRIEF DESCRIPTION OF DRAWINGS
[0031] The drawings described herein are used to provide further understanding of the present application, constitute a part of this application, and the schematic embodiments of the present application and the explanations thereof are used to explain the present application, and do not constitute improper limitation on the present application.
[0032] In the drawings:
[0033] Figure 1 It is a front view of the present application;
[0034] Figure 2 It is an explosion view of the present application;
[0035] Figure 3 It is a sectional view of the inner cap of the present application;
[0036] Figure 4 It is a sectional view of the outer cap of the present application.
[0037] In the drawings, the component list represented by each mark is as follows:
[0038] 1, medicine bottle; 2, inner cap; 201, through hole; 202, sealing gasket; 203, annular ring; 3, outer cap; 301, silica gel column. DETAILED DESCRIPTION
[0039] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.
[0040] Please refer to Figures 1 to 4 The embodiments provided by the utility model:
[0041] Embodiment one
[0042] A kind of high sealing property medical polypropylene bottle cap, including medicine bottle 1, medicine bottle 1 is equipped with inner cover 2 and outer cover 3;
[0043] Inner cover 2 is sleeved with sealing gasket 202, and through hole 201 is formed in sealing gasket 202;
[0044] The inner wall of outer cover 3 is attached with silica gel column 301;
[0045] Inner thread is formed in inner cover 2 and outer cover 3, outer thread is formed in medicine bottle 1 and inner cover 2, inner thread is formed in inner cover 2 and outer cover 3, and outer thread is formed in medicine bottle 1 and inner cover 2, which provides a standardized and stable connection path for the assembly of bottle cap and medicine bottle 1. The inner thread of inner cover 2 cooperates with the outer thread of medicine bottle 1, which can accurately control the depth of inner cover 2 screwed into medicine bottle 1, ensure the consistency of each assembly, and thus ensure the stability of the seal between inner cover 2 and medicine bottle 1;
[0046] Inner cover 2 is installed on the outer thread of medicine bottle 1 by inner thread, outer cover 3 is installed on the outer thread of outer cover 3 by inner thread, inner cover 2 screwed into medicine bottle 1 realizes the primary closure of medicine bottle 1, and the threaded connection of inner cover 2 and medicine bottle 1 forms a good sealing effect, which preliminarily isolates the medicine from the external environment. And outer cover 3 is installed on inner cover 2 by thread, which further strengthens the overall sealing structure. When outer cover 3 is opened, personnel can take medicine quantitatively through the through hole 201 on the sealing gasket 202 of inner cover 2, so as to avoid pouring too much at a time, and the inner cover 2 can be opened again to pour and take more medicine.
[0047] The inner wall top of inner cover 2 is provided with annular ring 203, which limits medicine bottle 1, and when annular ring 203 limits the bottle opening of medicine bottle 1, annular ring 203 can tightly close on the bottle opening.
[0048] Embodiment two
[0049] In order to avoid the gap at the sealing position affecting the sealing during use, for example, Figures 1 to 4As shown, the utility model also includes:
[0050] Silica gel column 301 is sleeved in the through hole 201 of the sealing gasket 202, and the silica gel column 301 is opened to the sealing gasket 202, when the outer cover 3 is screwed on the inner cover 2, the silica gel column 301 slides down along the through hole 201 of the sealing gasket 202, in this process, the silica gel column 301 generates uniform opening force to the peripheral sealing gasket 202 by the elasticity of itself. The opening effect makes the sealing gasket 202 more closely adhere to the inner wall of the bottle mouth of the medicine bottle 1, fills the possible tiny gap, and significantly improves the sealing effect. At the same time, the sealing gasket 202 is sleeved on the inner cover 2 to avoid loosening and falling when reciprocating rotation;
[0051] The outer side wall of the outer cover 3 is provided with anti-skid stripes, the anti-skid stripes are uniformly distributed along the circumferential direction of the outer cover 3, and the design of the anti-skid stripes greatly improves the operation convenience and reliability of the user when opening and closing the bottle cap. In actual use scene, especially when the user's hands have sweat, water stains or the medicine storage environment is relatively humid, the smooth surface of the bottle cap is easy to cause hand slip, and it is difficult to rotate the bottle cap. The uniformly distributed anti-skid stripes increase the friction between the outer cover 3 and the user's hands, so that the user can hold the outer cover 3 more easily and stably, accurately apply the rotating force, and smoothly complete the opening and closing action of the bottle cap.
[0052] Working principle:
[0053] Assembly connection: the inner cover 2 and the outer cover 3 are arranged on the medicine bottle 1. The inner cover 2 and the outer cover 3 are provided with internal threads, and the medicine bottle 1 and the inner cover 2 are provided with external threads. The inner cover 2 is installed on the external threads of the medicine bottle 1 through the internal threads, realizing the initial closure of the medicine bottle 1. The threaded connection mode accurately controls the depth of the inner cover 2 screwed into the medicine bottle 1, ensures the consistency of each assembly, forms a good sealing effect, and preliminarily isolates the medicine from the external environment. The outer cover 3 is installed on the external threads of the inner cover 2 through the internal threads, which further strengthens the overall sealing structure.
[0054] Quantitative medicine taking: when taking medicine, open the outer cover 3, at this time, personnel can take medicine quantitatively through the through hole 201 on the sealing gasket 202 of the inner cover 2, avoiding pouring too much at a time. If more medicine is needed, open the inner cover 2 again to pour and use.
[0055] Limiting effect: the inner wall top end face of the inner cover 2 is provided with an annular ring 203, which limits the bottle mouth of the medicine bottle 1 during assembly. The annular ring 203 can be closely closed on the bottle mouth to ensure the accuracy of the bottle mouth position and the tightness of the sealing.
[0056] The inner wall of the outer cover 3 is attached with a silica gel column 301. When the outer cover 3 is screwed on the inner cover 2, the silica gel column 301 slides down along the through hole 201 of the sealing gasket 202, in the process, the silica gel column 301 generates uniform opening force on the surrounding sealing gasket 202 by its own elasticity. The opening effect makes the sealing gasket 202 more closely fit the inner wall of the bottle mouth of the medicine bottle 1, fills the possible small gap, and significantly improves the sealing effect. At the same time, the sealing gasket 202 is sleeved on the inner cover 2 to avoid loosening and falling off when reciprocating rotation.
[0057] The basic principle and main features of the present application and the advantages of the present application are shown and described above. For those skilled in the art, it is obvious that the present application is not limited to the details of the above exemplary embodiments, and the present application can be realized in other specific forms without departing from the spirit or basic characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.
[0058] In addition, it should be understood that although the present application is described in the specification, each embodiment only contains one independent technical solution, and the description manner of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that those skilled in the art can understand.
Claims
1. A highly airtight pharmaceutical polypropylene bottle cap, comprising a medicine bottle (1), wherein the medicine bottle (1) is provided with an inner cap (2) and an outer cap (3), characterized in that: The inner cover (2) is fitted with a sealing gasket (202), and the sealing gasket (202) has a through hole (201); The inner wall of the outer cover (3) is fitted with a silicone pillar (301).
2. The pharmaceutical polypropylene bottle cap with high sealing performance according to claim 1, characterized in that: Both the inner cover (2) and the outer cover (3) are provided with internal threads, and both the medicine bottle (1) and the inner cover (2) are provided with external threads.
3. The pharmaceutical polypropylene bottle cap with high sealing performance according to claim 2, characterized in that: The inner cap (2) is installed on the outer thread of the medicine bottle (1) by the inner thread, and the outer cap (3) is installed on the outer thread of the outer cap (3) by the inner thread.
4. The pharmaceutical polypropylene bottle cap with high sealing performance according to claim 1, characterized in that: The inner wall top surface of the inner cover (2) is provided with an annular ring (203), which limits the position of the medicine bottle (1).
5. The pharmaceutical polypropylene bottle cap with high sealing performance according to claim 1, characterized in that: The silicone column (301) is slidably sleeved in the through hole (201) of the sealing gasket (202), and the silicone column (301) expands the sealing gasket (202).
6. The pharmaceutical polypropylene bottle cap with high sealing performance according to claim 1, characterized in that: The outer wall of the outer cover (3) is provided with anti-slip stripes, which are evenly distributed along the circumference of the outer cover (3).
Citation Information
Patent Citations
A quick-install medicine bottle cap
CN220997504U