Closure Venting Spout Prevents Liquid Spurting
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Solution Overview
Problem
Conventional closures for containers with flowable liquids often experience 'spurting' or 'surging' when rapidly poured, leading to messy pours due to air replacement and liquid exiting through vent ports, especially during quick dispensing motions.
Innovation Solution
A closure design featuring a base with a pouring spout and vent port geometry that directs air and liquid flow non-parallel to the longitudinal axis, minimizing spillage by separating vent and dispensing ports and using a snap-action hinge for efficient pouring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a vent port is provided to allow air entry during pouring, then air replacement is improved, but liquid spurting through the vent port occurs causing messy pours
Solution Approach 1:
The vent port is segmented into two separate orifices (first orifice in deck wall, second orifice in pouring spout wall) that are spatially separated. This segmentation allows air to enter through the first orifice while liquid that exits through the second orifice is directed away from the pouring stream, preventing messy spurting while maintaining reliable air replacement.
2Productivity
If rapid pouring is performed for quick dispensing, then productivity is improved, but liquid surging and spurting increases
Solution Approach 1:
The second orifice is positioned within the pouring spout wall before the liquid exits the spout. This preliminary positioning allows liquid that exits through the vent port to be redirected along a path separate from the main pouring stream, preventing surging and spurting even during rapid pouring operations.
3Object-generated harmful factors
If vent port and dispensing port are separated laterally, then liquid exiting through vent port is minimized, but device complexity increases
Solution Approach 1:
The pouring spout wall serves multiple functions: it forms the pouring spout structure, contains the second orifice for venting, and directs liquid flow. By making the pouring spout wall multi-functional, the design achieves lateral separation of vent and dispensing ports without significantly increasing device complexity.
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 closure design significantly reduces spillage and mess during rapid pouring by directing air and liquid flows effectively, ensuring consistent and reliable operation with high-speed manufacturing capabilities.
Implementation Method 1
The second orifice oriented to direct any product exiting the second orifice along a flow vector that is non-parallel to the longitudinal axis
Implementation Method 2
the need for the liquid within the container to be replaced by air as the liquid is poured from the container
Data Source
AI summary
A closure (30) is provided for an opening (32) of a container (31) having a container interior (33) where a product may be stored. The closure (30) includes a base (34) having a deck wall (62) overlaying the opening (32), a pouring spout (64) extending along a longitudinal axis (66) from the deck wall (62) to a pouring lip (68) above the deck wall (62), a dispensing port (70) extending through the deck wall (62) and terminating at a location within the pouring spout (64) below the pouring lip (68) to direct product from the opening (32) to the pouring spout (64), and a vent port (74) spaced laterally from the dispensing port (70) and extending from a first orifice (76) in the deck wall (62) to a second orifice (78) located within the pouring spout (64) below the pouring lip (68).