High-barrier-property polyester bottle cap for oral liquid medicine

Abstract

The utility model discloses a high barrier property oral liquid medicinal polyester bottle cap, which comprises a cap body, an inner plug is arranged on the inner wall of the cap body, a convex ring is arranged at the bottom of the outer wall of the inner plug, and a chamfer is arranged at the top of the inner side wall of the cap body along the circumferential direction, so that a matching cavity is formed between the outer wall of the inner plug and the inner side wall of the cap body. After the bottle cap is matched with the polyester bottle, the barrier property of the polyester bottle can be effectively improved, liquid medicine is not prone to volatilizing from the bottle opening, and protection of oral liquid medicine is facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of medicine bottle caps, and particularly relates to a polyester bottle cap for oral liquid medicine with high barrier property. Background Art

[0002] Oral liquid medicine refers to the medicine that enters the human body through oral administration. It usually has a liquid form, which is convenient for taking and absorption. Many oral liquid medicines have strong volatility. Therefore, it is required that the medicine bottle for containing oral liquid medicine and the bottle cap should have high barrier property after being matched. At present, polyester bottles are mainly used to contain oral liquid medicine. This kind of polyester bottle is made of polyester plastic, which has good heat resistance and chemical resistance. However, the barrier property of the existing bottle caps is slightly poor after being matched with the polyester bottles, and the volatilization of the liquid medicine in the bottle cannot be effectively blocked.

[0003] Therefore, how to solve the defects existing in the above-mentioned prior art has become the direction of efforts of those skilled in the art. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a polyester bottle cap for oral liquid medicine with high barrier property, which can completely solve the deficiencies of the above-mentioned prior art.

[0005] The purpose of the utility model is achieved by the following technical solutions:

[0006] A polyester bottle cap for oral liquid medicine with high barrier property includes a cap body. An inner plug is arranged on the inner wall of the cap body. A convex ring is arranged at the bottom of the outer wall of the inner plug. A chamfer is arranged along the circumferential direction at the top of the inner side wall of the cap body, so that a matching cavity is formed between the outer wall of the inner plug and the inner side wall of the cap body.

[0007] Further, the inner plug is in the shape of a cylindrical tube with two open ends. The top end of the inner plug is fixedly connected to the bottom surface of the bottle cap, and the bottom end of the inner plug is a free end.

[0008] Further, the outer wall of the convex ring is arc-shaped.

[0009] Further, a first sealing ring is arranged at the top of the matching cavity, and a first pressing ring is integrally formed on the bottom surface of the first sealing ring. The outer wall of the first pressing ring is a conical surface.

[0010] Further, a second sealing ring is arranged at the bottom end of the side wall of the cap body, and a second pressing ring is integrally formed on the bottom surface of the second sealing ring. The outer wall of the second pressing ring is a conical surface.

[0011] Compared with the prior art, the beneficial effect of the utility model lies in that: the structure is simple and the design is reasonable. After the bottle cap of the utility model is matched with the polyester bottle, the barrier property of the polyester bottle can be effectively improved, and the liquid medicine is not easy to volatilize from the bottle mouth, which is beneficial to the protection of oral liquid medicine. Brief Description of the Drawings

[0012] Figure 1 is a schematic structural view of the present utility model;

[0013] Figure 2 is Figure 1 a partially enlarged view of part A in

[0014] Figure 3 is Figure 1 a partially enlarged view of part B in

[0015] Figure 4 is a schematic structural view of the present utility model in cooperation with a polyester bottle;

[0016] Figure 5 is Figure 4 a partially enlarged view of part C in

[0017] Figure 6 is Figure 4 a partially enlarged view of part D in. Specific Embodiments

[0018] Hereinafter, exemplary embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present disclosure can be more thoroughly understood and the scope of the present disclosure can be fully communicated to those skilled in the art.

[0019] As Figures 1 to 6 shown, a polyester bottle cap for oral liquid medicine with high barrier property includes a cap body 1, an inner plug 2 is provided on the inner wall of the cap body 1, a convex ring 3 is provided at the bottom of the outer wall of the inner plug 2, and the outer wall of the convex ring 3 is arc-shaped. A chamfer 4 is provided along the circumferential direction at the top of the inner side wall of the cap body 1, so that a fitting cavity 5 is formed between the outer wall of the inner plug 2 and the inner side wall of the cap body 1.

[0020] In this embodiment, the inner plug 2 is a cylindrical tube with openings at both ends. The top end of the inner plug 2 is fixedly connected to the bottom surface of the cap body 1, and the bottom end of the inner plug 2 is a free end. The convex ring 3 is provided on the outer wall of the bottom end of the inner plug 2. This structural design ensures that the bottom end of the inner plug 2 has a certain flexibility, so that the convex ring 3 can closely contact the inner wall of the bottleneck 10 of the polyester bottle, which is beneficial to improving the barrier property of the polyester bottle.

[0021] The fitting cavity 5 matches the wall thickness of the bottleneck of the polyester bottle. When the bottle cap is fitted with the polyester bottle, the top end of the bottleneck 10 just fits tightly in the fitting cavity 5, further sealing the inside of the polyester bottle, improving the barrier property of the polyester bottle, and preventing the internal liquid medicine from volatilizing.

[0022] The bottle cap of the present utility model is different from the bottle caps in the prior art. There is no chamfer at the top of the side wall of the bottle cap in the prior art. Therefore, when the bottle cap is connected to the bottleneck, there is a gap between the outer wall of the inner plug and the inner wall of the bottleneck, and it cannot play a role in sealing the inside of the bottle body.

[0023] In this embodiment, a first sealing ring 6 is provided at the top of the fitting cavity 5, and a first pressing ring 7 is integrally formed on the bottom surface of the first sealing ring 6, and the outer wall of the first pressing ring 7 is a conical surface. A second sealing ring 8 is provided at the bottom end of the side wall of the cover body 1, and a second pressing ring 9 is integrally formed on the bottom surface of the second sealing ring 8, and the outer wall of the second pressing ring 9 is a conical surface.

[0024] At the mouth of the polyester bottle that cooperates with this bottle cap, there is an inclined surface that matches the first pressing ring 7. There is a step on the bottleneck 10 of the polyester bottle, and a notch that matches the second pressing ring 9 is provided on this step. After the bottle cap is screwed tightly onto the polyester bottle, the convex ring 3 contacts the inner wall of the bottleneck 10 to form a sealing line, and the liquid medicine inside the bottle body is blocked from flowing out and volatilizing outward through the sealing line. The first pressing ring 7 is closely fitted on the inclined surface at the mouth of the polyester bottle, and the second pressing ring 9 is closely fitted at the notch of the bottleneck step, thereby effectively improving the blocking effect and greatly enhancing the barrier property of the polyester bottle.

[0025] Similarly, it should be understood that, in order to streamline the present disclosure and help understand one or more of the various aspects of the utility model, in the above description of the exemplary embodiments of the present utility model, the various features of the present utility model are sometimes grouped together into a single embodiment, figure, or description thereof. However, the disclosed method should not be construed as reflecting the intention that the claimed utility model requires more features than those expressly recited in each claim. Rather, as reflected in the following claims, the aspects of the utility model lie in less than all the features of the single embodiments disclosed previously. Therefore, the claims following the detailed description are hereby expressly incorporated into the detailed description, where each claim itself serves as a separate embodiment of the present utility model.

[0026] Those skilled in the art can understand that the modules in the devices in the embodiments can be adaptively changed and set in one or more devices different from the embodiments. The modules or units or components in the embodiments can be combined into one module or unit or component, and in addition, they can be divided into multiple sub-modules or sub-units or sub-components. Except that at least some of such features and / or processes or units are mutually exclusive, any combination can be adopted for all the features disclosed in this specification (including the accompanying claims, abstract, and drawings) and all the processes or units of any method or device so disclosed. Unless otherwise clearly stated, each feature disclosed in this specification (including the accompanying claims, abstract, and drawings) can be replaced by an alternative feature that provides the same, equivalent, or similar purpose.

[0027] In addition, those skilled in the art can understand that although some of the embodiments herein include certain features included in other embodiments rather than other features, the combination of the features of different embodiments means that it is within the scope of the present utility model and forms different embodiments. For example, in the following claims, any one of the claimed embodiments can be used in any combination.

[0028] It should be noted that the above embodiments illustrate the present utility model rather than limit the present utility model, and those skilled in the art can design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claims. The word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The present utility model can be implemented by means of hardware including several different elements and by means of a properly programmed computer. In the unit claims listing several devices, several of these devices can be embodied by the same hardware item. The use of the words first, second, and third, etc. does not denote any order. These words can be interpreted as names.

[0029] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A high barrier polyester bottle cap for oral liquid medicine, comprising a cap body, characterized in that: An inner plug is provided on the inner wall of the cover body, a convex ring is provided on the bottom of the outer wall of the inner plug, and a chamfer is provided on the top of the inner wall of the cover body along the circumferential direction to form a matching cavity between the outer wall of the inner plug and the inner wall of the cover body, a first sealing ring is provided on the top of the matching cavity, and a first clamping ring is integrally formed on the bottom surface of the first sealing ring, and the outer wall of the first clamping ring is a conical surface, a second sealing ring is provided on the bottom end of the side wall of the cover body, and a second clamping ring is integrally formed on the bottom surface of the second sealing ring, and the outer wall of the second clamping ring is a conical surface.

2. The high barrier polyester bottle cap for oral liquid medicine according to claim 1, characterized in that: The inner plug is in the shape of a cylinder with openings at both ends, the top end of the inner plug is fixedly connected to the bottom surface of the bottle cap, and the bottom end of the inner plug is a free end.

3. The high barrier polyester bottle cap for oral liquid medicine according to claim 1, characterized in that: The outer wall of the convex ring is arc-shaped.

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