Twist-off Cap with Arc Outlet Opening for Pressurized Beverages
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Solution Overview
Problem
Existing plastic closures for beverage containers are complex and expensive to produce, not suitable for pressurized beverages, and provide an uncomfortable drinking experience, especially for carbonated drinks, with a limited field of application.
Innovation Solution
A screw cap designed as a one-piece twist-lock mechanism with a circular arc outlet opening that can be opened or closed by rotation, allowing drinking through the cap without removal, featuring a one-piece sealing lip for pressurized beverages and a non-centrally arranged cap mouthpiece for comfortable drinking, compatible with standardized container necks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a multi-part plastic closure is used to allow drinking through the cap, then the drinking experience is improved, but the production complexity and cost increase
Solution Approach 1:
The patent merges multiple functional parts into a single integrated closure body. The closure combines the cap structure, sealing mechanism, and drinking channel in one piece, eliminating the need for separate components while maintaining the ability to drink through the cap comfortably
Solution Approach 2:
The single closure body performs multiple functions simultaneously: it seals the container opening, provides a drinking channel, and includes a resealable mechanism. This multi-functional design reduces production complexity while maintaining ease of operation
2Ease of operation
If a plastic closure is designed for easy drinking, then the ease of operation is improved, but the suitability for pressurized beverages deteriorates
Solution Approach 1:
The closure incorporates a resilient sealing lip with specific local properties that can deform under pressure while maintaining the drinking channel. The sealing lip is positioned to seal against the container opening while allowing the channel to remain open for drinking, thus accommodating both ease of drinking and pressurized beverage suitability
3Ease of operation
If a closure cap is designed with a long outlet opening for comfortable drinking, then the ease of operation is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The outlet opening is integrated directly into the single closure body as a continuous feature rather than requiring assembly of separate parts. This integration simplifies manufacturing by reducing the number of precision alignment operations needed while still providing a long outlet opening for comfortable drinking
4Ease of operation
If a twist-lock mechanism is used to open and close the cap, then the ease of operation is improved, but the device complexity increases
Solution Approach 1:
The closure incorporates a dynamic sealing lip that can flex and deform during the twisting motion to engage and disengage from the container opening. This dynamic mechanism allows easy opening and closing through rotational movement while maintaining simplicity by using the plastic material's inherent flexibility rather than complex mechanical linkages
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The twist-off cap (2) made of plastic for a container neck (3) having a container mouthpiece (3a) with a guide (3d) running around the outside is composed of a jacket (2a) with a cylindrical basic shape and an essentially circular disk-shaped top plate (2d), on the inside (2e) of which a one-piece sealing lip (2g) is formed around the perimeter in a ring-shaped manner, the twist-off cap (2) having at least one outlet opening (2k), which is arranged outside an interior area (2v) enclosed by the full-perimeter sealing lip (2g) and which extends in a circular arc-shaped manner in the circumferential direction of the top plate (2d), and a cap mouthpiece (2n) being formed on the outside of the twist-off cap (2), and the outlet opening (2k) which opens into the cap mouthpiece (2n), and the cylindrical jacket (2a) having a guide (2b) running around the inside, which guide is embodied to interact with the guide (3d) running around the outside such that the twist-off cap (2) can be attached to the container mouthpiece (3a) in a hinged manner about a rotational axis (D).