Vent-Integrated Spout Seal for Pressure Equalization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Container assemblies without vents face pressure equalization issues during high-pressure processing, leading to potential rupture or degradation of the seal between the spout and pouch, as the internal pressure cannot adjust to ambient pressure changes.
Innovation Solution
Incorporating vents in the spout and/or pouch to allow fluid communication between internal cavities and the external environment, ensuring pressure equalization and maintaining a secure seal during high-pressure processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the spout and pouch are sealed together to form a fluid-tight interface, then the seal strength is improved, but the internal pressure cannot equalize with ambient pressure during high-pressure processing
Solution Approach 1:
The seal interface is segmented into multiple regions: a first sealing region that provides fluid-tight sealing, and a second sealing region that includes vent channels. This segmentation allows different portions of the seal to perform different functions - maintaining fluid tightness while allowing pressure equalization through the vent channels in the second region.
Solution Approach 2:
Vent channels act as intermediary pathways within the seal structure itself. These channels provide a controlled medium for pressure equalization between the internal cavity and ambient environment, while the surrounding seal material maintains the fluid-tight barrier. The intermediary vent channels resolve the contradiction by providing pressure relief without compromising the overall seal integrity.
2Reliability
If vents are added to allow pressure equalization, then the reliability during high-pressure processing is improved, but the fluid-tight seal may be compromised
Solution Approach 1:
The seal structure exhibits local quality differentiation where specific regions have different permeability characteristics. The first sealing region maintains high density and fluid-tight properties, while the second sealing region incorporates vent channels with controlled permeability. This local differentiation allows the seal to simultaneously provide fluid-tight barriers in critical areas and pressure equalization pathways in designated vent regions.
Solution Approach 2:
The vent channels create controlled porous pathways within the seal structure. These porous regions allow fluid and gas passage for pressure equalization while the surrounding non-porous seal material maintains fluid-tight sealing. The porous vent channels are strategically positioned to provide pressure relief without compromising the overall seal integrity.
3Quantity of substance
If the cavity is completely sealed, then the fluid containment is improved, but the pressure differential causes seal deterioration during high-pressure processing
Solution Approach 1:
The seal interface is divided into functional segments: fluid-tight sealing regions that contain the product and vent channels that allow pressure equalization. This segmentation enables the seal to simultaneously maintain fluid containment while preventing pressure differential buildup that would cause seal deterioration during high-pressure processing.
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 vents prevent deterioration of the seal and structural integrity by allowing pressure equalization, thereby preventing rupture and maintaining the container's functionality during high-pressure processing.
Implementation Method 1
A vent, in one of the support formation and the pouch material which forms the cavity, provides a fluid passage between the cavity and outside of the pouch such that when the pressure of a fluid surrounding the pouch is changed, the vent permits the fluid to flow relative to the cavity to equalize the pressure within the cavity and at the outside of the pouch.
Data Source
AI summary
A container assembly including a pouch, spout and closure is provided. When the pouch and spout are attached, one or more cavities are formed between the inner surfaces of the sidewall of the pouch and the external surface of a mounting portion of the spout. One or both of the spout and pouch include a vent which provides for fluid communication between the cavity and the ambient environment on the outside of the pouch. The vents are configured to allow for pressure equalization of the cavity relative to the outside of the pouch during sterilization of the container assembly.