High-barrier-property polyester bottle for oral liquid medicine

Abstract

The polyester bottle comprises a bottle body and a bottle cap, a bottle neck is arranged at the top end of the bottle body, a bottle opening is formed in the top end of the bottle neck, threads are arranged on the outer wall of the bottle neck, the bottle cap is in threaded connection with the bottle neck through the threads, an inner plug is arranged on the inner wall of the bottle cap, a protruding ring is arranged at the bottom of the outer wall of the inner plug, and the inner plug is inserted into the bottle opening. The protruding ring makes contact with the inner wall of the bottle neck, and the contact position is located between the bottle opening and the top end of the spiral thread. The oral liquid bottle is simple in structure, reasonable in design and high in barrier property, 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 bottles, and particularly relates to a polyester bottle 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, so the medicine bottles for containing oral liquid medicine are required to have high barrier property. At present, polyester bottles are mainly used to contain oral liquid medicine. Such polyester bottles are made of polyester plastics, which have good heat resistance and chemical resistance, but the barrier property is slightly poor.

[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 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 realized by the following technical solutions:

[0006] A polyester bottle for oral liquid medicine with high barrier property includes a bottle body and a bottle cap. A bottleneck is provided at the top of the bottle body, and a bottle mouth is opened at the top of the bottleneck. The outer wall of the bottleneck is provided with screw threads, and the bottle cap is threadedly connected to the bottleneck through the screw threads. An inner plug is provided on the inner wall of the bottle cap. A convex ring is provided at the bottom of the outer wall of the inner plug. The inner plug is inserted into the bottle mouth, and the convex ring contacts the inner wall of the bottleneck, and the contact position is between the bottle mouth and the top of the screw threads.

[0007] Further, the distance between the top of the screw threads and the bottle mouth is 4 mm.

[0008] Further, the inner plug is in the shape of a cylindrical tube with both ends open, and the top end of the inner plug is fixedly connected to the bottom surface of the bottle cap.

[0009] Further, a chamfer is provided along the circumferential direction at the top of the inner wall of the bottle cap, so that a cavity matching the wall thickness of the bottleneck is formed between the outer wall of the inner plug and the inner wall of the bottle cap.

[0010] Compared with the prior art, the beneficial effects of the utility model are as follows: simple structure, reasonable design, strong barrier property, 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

[0011] Figure 1 is the structural schematic diagram of the bottle body in the utility model;

[0012] Figure 2 is the sectional structural schematic diagram of the bottle cap in the utility model;

[0013] Figure 3 It is a diagram showing the mating relationship between the bottle body and the bottle cap in the present utility model;

[0014] Figure 4 is Figure 3 a partial enlarged view of part A in Detailed implementation manners

[0015] 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 completely conveyed to those skilled in the art.

[0016] As Figures 1 to 4 shown, a high-barrier oral liquid medicinal polyester bottle includes a bottle body 1 and a bottle cap 2. The top of the bottle body 1 is provided with a bottleneck 101. An opening is formed at the top of the bottleneck 101. A spiral thread 102 is provided on the outer wall of the bottleneck 101. The bottle cap 2 is threadedly connected to the bottleneck 101 through the spiral thread 102. An inner plug 201 is provided on the inner wall of the bottle cap 2. A convex ring 202 is provided at the bottom of the outer wall of the inner plug 201. The inner plug 201 is inserted into the opening of the bottle mouth. The convex ring 202 contacts the inner wall of the bottleneck 101, and the contact position is located between the opening of the bottle mouth and the top of the spiral thread 102. The distance L between the top of the spiral thread 102 and the opening of the bottle mouth is 4 mm. The contact between the convex ring 202 and the inner wall of the bottleneck 101 forms a circular sealing line, and the outflow and outward volatilization of the liquid medicine in the bottle body 1 are blocked through the sealing line.

[0017] In the prior art, the distance between the top of the spiral thread on the outer wall of the bottleneck and the opening of the bottle mouth is 2 mm, so that the contact position between the convex ring and the inner wall of the bottleneck exactly corresponds to the position of the outer wall spiral thread. This polyester bottle is injection-molded from polyester plastic. The spiral thread on the outer wall of the bottleneck increases the wall thickness, which in turn causes varying degrees of shrinkage at the corresponding position on the inner wall of the bottleneck. This shrinkage results in an uneven inner wall of the bottleneck at the corresponding position. Inevitably, there will be gaps when the convex ring contacts it, and good barrier performance cannot be guaranteed. In the polyester bottle of the present utility model, the distance L between the top of the spiral thread 102 and the opening of the bottle mouth is 4 mm, so that the contact position between the convex ring 202 and the inner wall of the bottleneck 101 is located between the opening of the bottle mouth and the top of the spiral thread 102. The wall thickness of this section of the bottleneck 101 is uniform, and its inner wall is a smooth circumferential surface. There will be no gaps when the convex ring 202 contacts it. Therefore, the barrier performance of the polyester bottle is improved.

[0018] In this embodiment, the inner plug 201 is in the shape of a cylindrical tube with both ends open. The top end of the inner plug 201 is fixedly connected to the bottom surface of the bottle cap 2, and the bottom end of the inner plug 201 is a free end. The convex ring 202 is arranged on the outer wall of the bottom end of the inner plug 201. The design of this structure ensures that the bottom end of the inner plug 201 has a certain flexibility, enabling the convex ring 202 to closely contact the inner wall of the bottleneck 101, which is beneficial to improving the barrier property of the polyester bottle.

[0019] In another embodiment of the present utility model, a chamfer 203 is provided along the circumferential direction at the top of the inner wall of the bottle cap 2, so that a cavity 204 matching the wall thickness of the bottleneck 101 is formed between the outer wall of the inner plug 201 and the inner side wall of the bottle cap 2. When the bottle cap 2 is connected to the bottleneck 101, the top end of the bottleneck 101 just fits tightly in this cavity 204, further sealing the interior of the bottle body 1 and improving the barrier property of the polyester bottle.

[0020] The polyester bottle of the present utility model is different from the polyester bottles in the prior art. There is no chamfer at the top of the inner wall of the bottle cap of the polyester bottle 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 interior of the bottle body.

[0021] Compared with the prior art, the structure of the present utility model is simple, reasonably designed, has strong barrier property, and the liquid medicine is not easy to volatilize from the bottle mouth, which is beneficial to the protection of oral liquid medicine.

[0022] 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 foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into the detailed description, where each claim stands on its own as a separate embodiment of the present utility model.

[0023] Those skilled in the art can understand that the modules in the devices in the embodiments can be adaptively changed and arranged 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 used to combine 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.

[0024] 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.

[0025] It should be noted that the above embodiments illustrate the present utility model rather than limit it, 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 claim. The word "comprising" does not exclude the presence of elements or steps not listed in the claim. 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 indicate any order. These words can be interpreted as names.

[0026] 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 within the protection scope of the present utility model.

Claims

1. A high barrier polyester bottle for oral liquid medicine, comprising a bottle body and a bottle cap, wherein the top of the bottle body is provided with a bottleneck, the top of the bottleneck is provided with a bottle mouth, the outer wall of the bottleneck is provided with a spiral pattern, and the bottle cap and the bottleneck are connected by a spiral thread, characterized in that: An inner plug is provided on the inner wall of the bottle cap, and a convex ring is provided on the bottom of the outer wall of the inner plug. The inner plug is inserted into the bottle mouth, and the convex ring contacts the inner wall of the bottleneck, and the contact position is between the bottle mouth and the top of the spiral pattern. The distance between the top of the spiral pattern and the bottle mouth is 4 mm. A chamfer is provided on the top of the inner wall of the bottle cap along the circumferential direction, so that a cavity matching the wall thickness of the bottleneck is formed between the outer wall of the inner plug and the inner wall of the bottle cap.

2. The high barrier polyester bottle 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, and the top end of the inner plug is fixedly connected to the bottom surface of the bottle cap.

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