Dispensing Closure Aperture Segmentation and Venting
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Solution Overview
Problem
Existing dispensing closures for pourable substances, such as viscous fluids, often result in uncontrollable pouring and excessive spillage due to inadequate aperture sizing and lack of efficient venting, leading to erratic flow and fluid retention issues.
Innovation Solution
A dispensing closure design featuring a central deck with multiple apertures, a spout that surrounds the apertures, and a cap that moves between closed and open positions, incorporating vent apertures for air intake and a projection for fluid containment, which regulates flow and prevents overpressurization, ensuring consistent and controlled pouring across various orientations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a single large aperture is used in the dispensing closure, then fluid passage is adequate, but pouring control is poor and spillage increases
Solution Approach 1:
The single large aperture is divided into multiple smaller apertures (first aperture, second aperture, third aperture) in the deck. This segmentation allows the fluid to pass through multiple controlled openings rather than one large opening, improving pouring control while maintaining adequate fluid passage. The spout surrounding these apertures further contains and directs the flow from each individual aperture.
2Adaptability or versatility
If the aperture is positioned off-center on the container, then adaptability to various container orientations is improved, but fluid containment becomes difficult and spillage increases
Solution Approach 1:
The spout is designed to surround the apertures in the deck, creating a nested structure where the spout contains the aperture openings. This nested configuration allows the aperture to be positioned off-center for adaptability while the surrounding spout acts as a containment structure that directs fluid flow and prevents spillage, regardless of the aperture's position relative to the container center.
3Device complexity
If venting is not incorporated into the dispensing closure, then the structure remains simple, but overpressurization occurs and flow becomes erratic
Solution Approach 1:
The deck structure serves multiple functions: it provides the aperture openings for fluid passage, acts as a mounting surface for the spout, and incorporates vent apertures for air intake. By integrating the venting function into the existing deck structure rather than adding a separate venting mechanism, the design maintains structural simplicity while ensuring reliable, consistent flow through proper pressure management.
Data Source
AI summary
A closure includes a body having an outer skirt configured to be assembled with a container, a deck extending radially inward of the skirt, and a spout extending from the deck in a direction opposite the skirt. The spout surrounds a central portion of the deck that defines at least a first aperture having a front edge substantially flush with a front portion of the spout and a rear edge radially spaced from the rear portion of the spout by a portion of the deck.