Over-molded Container Insert with Bi-directional Venting
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Solution Overview
Problem
Existing container inserts for closed loop dispensing systems require multiple parts and assembly time, and lack self-venting and recyclable features.
Innovation Solution
A container insert manufactured using an over-molding process with a normally closed valve that opens with a vertically movable lance, featuring bi-directional valves for air venting and chemical off-gassing, and a self-sealing design to reduce part count and assembly time, while being entirely recyclable and preventing other cap adapters from being used.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple parts are used in container inserts, then functionality is improved, but assembly time and device complexity increase
Solution Approach 1:
The patent combines multiple functional components (substrate, valve, venting mechanisms, sealing elements) into a single integrated container insert that is over-molded as one piece. This merging eliminates the need for separate parts while maintaining all necessary functions including liquid containment, valve operation, and bi-directional venting.
Solution Approach 2:
The container insert is designed as a multi-functional component that simultaneously provides liquid containment, valve control, bi-directional venting (for both air ingress and chemical off-gassing), and sealing functions. The single insert structure performs multiple roles that would traditionally require separate components.
2Reliability
If multiple parts are used in container inserts, then functionality is improved, but assembly time increases
Solution Approach 1:
The container insert is manufactured as a single over-molded piece combining substrate, valve, and venting components, eliminating multi-step assembly processes. The dip tube is inserted into the hollow tube in a single operation, and the cap assembly is placed over the insert, completing the entire assembly in one sequence without requiring multiple separate assembly steps.
3Reliability
If a normally closed valve is used, then chemical flow is sealed until needed, but manufacturing precision requirements increase
Solution Approach 1:
The valve is constructed from flexible material that can deform to create a seal. The flexibility of the valve material allows it to conform to the hollow tube opening, creating an effective seal without requiring extremely tight manufacturing tolerances. The flexible nature enables the valve to open when pressure is applied and close when pressure is released.
4Extent of automation
If bi-directional venting is implemented, then self-venting capability is improved, but device complexity increases
Solution Approach 1:
The container insert automatically vents in both directions without requiring external control mechanisms. The bi-directional valve structure allows air to enter the container during filling or expansion, and allows chemical vapors to escape during dispensing or temperature changes. The system self-regulates pressure through the flexible valve design.
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 reduces manufacturing costs and assembly time, provides automatic self-venting and recyclability, ensures chemical flow remains sealed until needed, and prevents unauthorized cap adapter use, enhancing durability and economic efficiency.
Implementation Method 1
A flexible valve, having an upper side and a lower side, is positioned on the open upper end of the over-molded hollow tube to normally close the open upper end of the over-molded hollow tube. The flexible valve may be opened as will be described hereinafter thereby permitting liquid from the container to pass upwardly therethrough.
Implementation Method 2
Each of the bi-directional valves are normally closed to prevent liquid from passing upwardly therethrough. Each of the bi-directional valves are movable downwardly to an open position to permit air to pass downwardly therethrough to vent the container. Each of the bi-directional valves are movable upwardly to an open position to permit the gas in the container to be de-gassed upwardly therethrough.
Data Source
AI summary
An insert is disclosed for use with a closed loop dispensing system. The insert is press-fitted into the throat of a liquid container. The insert includes a normally closed chemical valve which is opened when pierced by a vertically movable lance to permit the liquid in the container to be dispensed to a mixing machine or the like. The insert also includes a plurality of radially spaced-apart bi-directional valves which automatically permit air to be vented into the container. The bi-directional valves also permit off-gassing of gas in the container.