A drinking straw hole sealing cover

By designing a beverage straw hole sealing cap that is independent of the cup lid, and using an integrated structure and food-grade silicone rubber material, the problems of poor straw hole sealing and high cost in existing technologies are solved, achieving effective sealing of the straw hole and reducing packaging costs.

CN224448719UActive Publication Date: 2026-07-03INNER MONGOLIA AGRICULTURAL UNIVERSITY AFFILIATED SCHOOL

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
INNER MONGOLIA AGRICULTURAL UNIVERSITY AFFILIATED SCHOOL
Filing Date
2025-08-26
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

Existing beverage packaging straw holes can easily lead to liquid spillage and contaminant entry if the drink is not finished, and existing sealing devices lack versatility and increase packaging costs.

Method used

Design a beverage straw hole sealing cap that is independent of the cup lid, including a traction handle and a sealing body. It adopts an integrated structure, and the sealing body consists of a limiting part and a sealing part. It is made of food-grade silicone rubber material and is suitable for straw holes of different sizes.

Benefits of technology

It achieves an effective seal for the straw hole, reduces manufacturing costs, is versatile, hygienic and safe, and reusable, preventing liquid leakage and contaminant entry.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN224448719U_ABST
    Figure CN224448719U_ABST
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Abstract

This utility model relates to the field of straw hole sealing caps, specifically to a beverage straw hole sealing cap. This sealing cap aims to solve the liquid leakage and hygiene problems caused by the difficulty in sealing the straw hole after opening existing beverages. The technical solution of this utility model is: providing an integrated, independent structure, including a traction handle and a sealing body; the sealing body includes a limiting part and a sealing part. The limiting part has a diameter larger than the straw hole, serving as a limiting flange to prevent the sealing cap from falling into the beverage; the sealing part is used to insert into and elastically seal the straw hole. Compared with the prior art, this utility model, as an independent universal accessory, has the advantages of simple structure, low manufacturing cost, good sealing performance, hygiene and safety, reusability, and wide applicability.
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Description

Technical Field

[0001] This utility model relates to the field of straw hole sealing cap technology, specifically to a beverage straw hole sealing cap. Background Technology

[0002] In daily life, packaged beverages with straw holes, such as boxed milk, juice, or cup-packaged milk tea and coffee, are very popular among consumers. However, if these beverages are not consumed immediately after opening, the straw holes can cause a series of problems. For example, if the unfinished beverage is refrigerated and then taken out to warm up, the temperature difference between the inside and outside of the container may cause the liquid to overflow from the straw hole; in a moving environment, such as a vehicle, the liquid is also prone to splashing out, causing inconvenience and contamination. In addition, the open straw hole can easily allow dust, bacteria, and other external contaminants to enter the beverage, posing a hygiene risk. Currently, consumers usually use some temporary methods to seal the straw hole, such as using tissue paper or tape, but these methods are not only ineffective and prone to falling off, but are also extremely unhygienic.

[0003] To address the aforementioned issues, several sealing solutions compatible with cup lids have emerged in the prior art. For example, patent document CN216147749U discloses a cup lid with a sealing element, on which a sealing plug for sealing the straw hole is connected via a connecting arm. Another patent document, CN220315882U, discloses a disposable cup lid with a leak-proof plug integrally formed via a connecting arm, which can be broken open and inserted into the drinking spout.

[0004] However, analysis revealed that while the aforementioned existing technical solutions achieve a certain degree of sealing, they all suffer from flaws stemming from their design concepts. Their commonality lies in the fact that the sealing device (sealing plug or leak-proof plug) exists as an integrated component of a specific cup lid, meaning it is connected and matched directly to the lid. This integrated design leads to two problems: First, it lacks versatility; the sealing device can only be used with its specific cup lid and cannot be applied to the hundreds or thousands of other beverages with different packaging that consumers encounter daily. Second, it increases packaging costs; integrating such a structure into the cup lid undoubtedly makes the lid's mold structure more complex and increases material usage, thereby raising the overall cost of beverage packaging. This poses a significant obstacle to commercial promotion for fast-moving consumer goods with already limited profit margins.

[0005] Therefore, there is an urgent need in the art to provide a low-cost, hygienic, and safe beverage straw hole sealing device that can serve as a universal solution and is independent of any specific beverage packaging or cup lid design, thereby overcoming the aforementioned deficiencies in the prior art. Utility Model Content

[0006] In order to solve the above-mentioned technical problems in the prior art, the present invention provides a sealing cap for the straw hole of a beverage.

[0007] To achieve the above objectives, the technical solution of this utility model is as follows:

[0008] A beverage straw hole sealing cap includes a sealing cap, which is an integrated design and includes, from top to bottom, a traction handle and a sealing body, with the lower end of the traction handle connected to the sealing body;

[0009] The sealing body includes a limiting part and a sealing part. The upper end of the limiting part is connected to the lower end of the traction handle. The limiting part is cylindrical and its diameter is larger than the diameter of the suction tube hole to be sealed.

[0010] The upper end of the blocking part is connected to the lower end of the limiting part, and the blocking part is used to insert into the suction tube hole to be blocked to achieve the blocking.

[0011] Furthermore, the blocking part is a frustum shape with a larger top and a smaller bottom, and the minimum diameter of the blocking part is smaller than the diameter of the straw hole, while the maximum diameter of the blocking part is larger than the diameter of the straw hole.

[0012] Furthermore, the traction handle, the limiting part, and the blocking part are coaxially arranged along the central axis.

[0013] Furthermore, the traction handle is inclined relative to the central axis of the sealing body.

[0014] Furthermore, the traction handle is solid, which satisfies the following conditions: the traction handle can better bear force, and the sealing cap can be easily pulled out or inserted into the hole to be sealed.

[0015] Furthermore, the traction handle is a hollow ring shape, which satisfies the following requirements: the traction handle can better bear force, and the sealing cap can be easily pulled out or inserted into the hole to be sealed.

[0016] Furthermore, the traction handle can be made of one of the commonly used food materials such as TPU soft rubber, copolyester, or polypropylene.

[0017] Furthermore, the sealing body is made of food-grade silicone rubber, a soft and elastic material. On the one hand, it is safe to come into contact with food and is harmless to the human body; on the other hand, the soft and elastic material can provide a better sealing effect.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. This utility model is a completely independent accessory, not attached to any specific cup lid or beverage packaging. Therefore, it can serve as a universal tool, applicable to various beverages on the market with standard-sized straw holes, overcoming the limitation of existing integrated sealing solutions that can only be used with complementary products.

[0020] 2. This utility model adopts an integrated design, with the overall structure consisting only of a traction handle and a sealing body, without complex connecting or moving components. This simplifies mold development, simplifies the production process, reduces material usage, and thus greatly lowers manufacturing costs, allowing it to be promoted as an inexpensive standalone product or promotional gift.

[0021] 3. The traction handle design of this utility model allows users to easily insert or remove the sealing cap; the sealing part utilizes the properties of elastic material to form a tight physical seal with the inner wall of the straw hole, effectively preventing liquid leakage and the entry of external contaminants; the limiting part acts as a stop, reliably preventing the risk of the sealing cap accidentally falling into the beverage, ensuring hygiene and safety during use; the whole is made of edible material, can be washed and reused, and is more economical and environmentally friendly. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 Front view of an embodiment where the traction handle is vertically positioned.

[0024] Figure 2 Front view of an embodiment where the traction handle is tilted.

[0025] Figure 3 This is an overall rendering of one embodiment where the traction handle is vertically positioned.

[0026] Figure 4 This is an overall effect diagram showing the tilting configuration of the traction handle in one embodiment.

[0027] The annotations in the attached figures are explained as follows:

[0028] 1-Sealing cap; 2-Traction handle; 3-Sealing body; 31-Limiting part; 32-Sealing part. Detailed Implementation

[0029] The technical solution of this utility model will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are not all embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0030] It should be noted that, unless otherwise specifically stated, the relative arrangement and numerical expressions of the components and steps described in these embodiments should not be construed as limiting the scope of this utility model.

[0031] The following description of exemplary embodiments is merely illustrative and is not intended to limit the present invention or its application or use in any way. Techniques, methods, and apparatus known to those skilled in the art may not be discussed in detail herein, but where applicable, such techniques, methods, and apparatus should be considered part of this specification.

[0032] Definitions:

[0033] Upper and lower parts: vertical Figure 1 The top of the direction is the upper part, in a vertical direction. Figure 1 The bottom of the direction is the lower part.

[0034] This embodiment provides a sealing cap for a beverage straw hole, such as... Figures 1 to 2 As shown, it is an integrated, independent structure, including a traction handle 2 and a sealing body 3. The sealing body 3 includes a limiting part 31 and a sealing part 32. Figure 1 The image shows a preferred configuration where the three core components—the traction handle 2, the limiting part 31, and the blocking part 32—are coaxially arranged along the same central axis. For example... Figure 2 As shown, the traction handle 2 can also be tilted relative to the central axis of the sealing body 3 to facilitate insertion and removal operations at a specific angle.

[0035] The traction handle 2 is located at the top of the sealing cover 1, for convenient gripping and operation by the user. In this embodiment, the traction handle 2 can be a solid structure, or it can be as follows: Figure 1 The hollow ring structure shown.

[0036] The sealing body 3 is connected to the lower end of the traction handle 2. The upper limiting portion 31 of the sealing body 3 is cylindrical, and its core function is to limit and block during sealing. Its diameter is designed to be larger than the diameter of the straw hole to be sealed. When the sealing portion 32 of the sealing cap 1 is inserted into the straw hole, the limiting portion 31 will block the outside of the straw hole, effectively preventing the entire sealing cap 1 from falling into the beverage container due to accidental operation or shaking, thus providing safety and protection.

[0037] The sealing portion 32 at the lower part of the sealing body 3 is connected to the lower end of the limiting portion 31 and is the core component for achieving the sealing function. This portion is preferably designed to be made of food-grade silicone rubber material with good sealing performance, and its shape is a frustum of a cone, wider at the top and narrower at the bottom. Its frustum-shaped structure facilitates alignment and insertion into the straw hole. For example... Figure 3 and Figure 4 As shown, after the sealing cap 1 is inserted, the elastic sidewall of the seal will generate radial pressure with the inner wall of the straw hole, forming a tight sealing fit, thereby achieving effective sealing of the straw hole.

[0038] This invention preferably uses an elastic material for integral injection molding or compression molding; for example, the sealing body 3 is made of food-grade silicone rubber. A two-color injection molding process can also be used; for example, the traction handle 2 is made of TPU soft rubber with a better feel, while the sealing body 3 is made of food-grade silicone rubber with better sealing properties.

[0039] To further illustrate this utility model, several preferred embodiments are listed below.

[0040] Example 1

[0041] This embodiment provides a sealing cap 1 suitable for small-diameter straw openings (such as juice straw openings). Its specific dimensional parameters are as follows: the outer diameter of the traction handle 2 is 4.0 mm, and the inner diameter is 2.0 mm; the thickness of the limiting part 31 is 0.5 mm; the upper diameter of the frustum of the sealing part 32 is 5.0 mm, the lower end diameter is 3.0 mm, and the height is 4.0 mm.

[0042] Example 2

[0043] This embodiment provides a sealing cap 1 suitable for straw openings with larger diameters (such as straw openings in milk tea and coffee cups). Its specific dimensional parameters are as follows: the outer diameter of the traction handle 2 is 15.0 mm, and the inner diameter is 13.0 mm; the thickness of the limiting portion 31 is 1.5 mm; the upper diameter of the frustum of the sealing portion 32 is 10.0 mm, the lower end diameter is 6.0 mm, and the height is 8.0 mm.

[0044] Example 3

[0045] This embodiment provides a sealing cap 1 suitable for medium-sized straw openings (such as Tetra Pak or Combibloc milk, yogurt, etc.). Its specific dimensional parameters are as follows: the outer diameter of the traction handle 2 is 5.0 mm, and the inner diameter is 3.0 mm; the thickness of the limiting portion 31 is 1.0 mm; the upper diameter of the frustum of the sealing portion 32 is 6.0 mm, the lower end diameter is 4.0 mm, and the height is 5.0 mm.

[0046] By adjusting specific dimensional parameters, this invention can meet different sealing application scenarios, and has good versatility and applicability.

[0047] The above specific embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to examples, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A drinking straw hole closure cap comprising a closure cap, characterised in that: The sealing cap is an integrated design, comprising, from top to bottom: a traction handle and a sealing body, with the lower end of the traction handle connected to the sealing body; The sealing body includes a limiting part and a sealing part. The upper end of the limiting part is connected to the lower end of the traction handle. The limiting part is cylindrical and its diameter is larger than the diameter of the suction tube hole to be sealed. The upper end of the blocking part is connected to the lower end of the limiting part, and the blocking part is used to insert into the suction tube hole to be blocked to achieve the blocking.

2. A drinking straw hole closure cap according to claim 1, characterised in that: The blocking part is a frustum shape, wider at the top and narrower at the bottom. The minimum diameter of the blocking part is smaller than the diameter of the straw hole, and the maximum diameter of the blocking part is larger than the diameter of the straw hole.

3. A drinking straw hole closure cap according to claim 1, wherein: The traction handle, the limiting part, and the sealing part are arranged coaxially along the central axis.

4. A drinking straw hole closure cap according to claim 1, wherein: The traction handle is inclined relative to the central axis of the sealing body.

5. A drinking straw hole closure cap according to claim 1, wherein: The traction handle is solid.

6. A drinking straw hole closure cap according to claim 1, wherein: The traction handle is a hollow ring.

7. A beverage straw hole sealing cap according to claim 5 or 6, characterized in that: The traction handle can be made of one of the commonly used food materials such as TPU soft rubber, copolyester, or polypropylene.

8. A drinking straw hole closure cap according to claim 1, wherein: The sealing body is made of food-grade silicone rubber, a soft and elastic material.