Container Fitting With Frangible Straw Seal for Leak-Resistant Drinking
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Solution Overview
Problem
Conventional container fittings are unsuitable for direct drinking from bottles, particularly for young children, as they can lead to spillage, choking, or unnecessary distraction, and often require removal of the cap, which can result in leakage when a straw is used, posing safety and convenience issues.
Innovation Solution
A container fitting with a tubular body featuring a frangible region or open hole for a standard size drinking straw, coupled with a seal layer that is either peelable or puncturable to allow safe and leak-resistant access to the container contents, allowing the straw to pass through while maintaining a secure seal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional cap or fitting is used for container closure, then the container can be sealed to prevent spilling, but direct drinking becomes difficult and may cause spillage, choking, or distraction
Solution Approach 1:
The cap is segmented into multiple functional regions: a sealed body for containment, a frangible region for controlled access, and a sealed opening for straw insertion. This segmentation allows the cap to simultaneously maintain seal integrity and provide safe drinking access through the frangible region's controlled failure mode.
Solution Approach 2:
A drinking straw serves as an intermediary tool that bridges the sealed cap and the user's mouth. The straw passes through the frangible region, allowing liquid to be accessed safely without direct mouth contact with the container opening, thereby preventing spillage and choking hazards.
2Ease of operation
If the fitting is removed to allow direct drinking, then drinking becomes easier, but the container remains open and prone to spilling
Solution Approach 1:
The frangible region is pre-configured with a slit that will fail in a controlled manner upon straw insertion. This preliminary preparation allows the region to transition from sealed to open state only when needed, maintaining seal integrity until the moment of use.
Solution Approach 2:
The cap exhibits different structural qualities at different locations: the body and opening remain strongly sealed, while the frangible region has a controlled weakness (slit) that fails predictably. This local quality differentiation enables selective opening only where needed for drinking access.
3Ease of operation
If a resealable nozzle fitting is used, then liquid can be poured or squirted into the mouth, but the nozzle requires multiple close-fitting parts which increase cost and complexity
Solution Approach 1:
The complex resealable nozzle mechanism is extracted and replaced with a simple frangible region containing a slit. This extraction eliminates the need for multiple close-fitting parts while maintaining the ability to dispense liquid, thereby reducing device complexity and cost.
Solution Approach 2:
The frangible region with its slit is designed as a single-use, non-resealable structure that fails in a controlled manner after straw insertion. This disposable approach eliminates the need for complex reusable mechanisms, reducing both manufacturing cost and structural complexity.
4Ease of operation
If the frangible region is designed to allow straw passage, then safe drinking is enabled, but the aperture must be precisely sized to prevent leakage
Solution Approach 1:
The frangible region transitions dynamically from a sealed state to an open state upon straw insertion. The slit fails in a controlled manner to create an aperture that is sufficiently large for straw passage but small enough to maintain leak resistance through surface tension and capillary effects.
Solution Approach 2:
The aperture dimensions are optimized to specific parameter ranges that balance straw accessibility with leak prevention. The slit width and resulting aperture size are controlled within tight tolerances to ensure the aperture is large enough for comfortable straw insertion but small enough to prevent liquid leakage when the container is tipped.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enables safe, clean, and accessible drinking from a container without removing the fitting, providing a leak-resistant aperture that minimizes spillage and maintains container contents integrity, even when tilted or inverted.
Implementation Method 1
a top wall having a frangible region therein configured to permit passage of the drinking straw therethrough
Implementation Method 2
A seal layer is coupled to the closed top end and configured to overlap the frangible region
Implementation Method 3
the seal layer may be a puncturable layer coupled to the top wall and may be configured to be punctured by the drinking straw when passing the drinking straw through the frangible region
Data Source
AI summary
A fitting for affixing to a mouth portion of a receiving container and for receiving a drinking straw comprises a tubular body including a side wall having an inner surface and an outer surface, an open bottom end and a closed top end formed by a top wall having a frangible region therein configured to permit passage of the drinking straw therethrough. A seal layer is coupled to the closed top end and is configured to overlap the frangible region. The fitting may also be mounted onto a container body including a container side wall, an integral container bottom wall and an open top end defined by an open mouth portion. A drinking straw may be releasably coupled to the container body.