Recyclable Container Insert with Self-Venting Valve
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Solution Overview
Problem
Existing container inserts for closed loop dispensing systems often require multiple parts and assembly time, and lack self-venting capabilities, making them inefficient and complex.
Innovation Solution
A recyclable container insert manufactured using an over-molding process with a compressible TPE material, featuring a bi-directional valve system and a snap-in plastic valve that reduces part count and assembly time, while providing self-venting functionality and sealing mechanisms to prevent liquid leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple parts are used in container inserts, then sealing and venting functions can be achieved, but assembly time and device complexity increase
Solution Approach 1:
The patent combines multiple separate components (substrate portion, over-molded portion, vent openings, bi-directional valves, seals) into a single integrated container insert assembly. The over-molded portion is directly molded onto the substrate portion, eliminating the need for separate assembly steps and reducing part count while maintaining all necessary sealing and venting functions.
Solution Approach 2:
The container insert is designed as a multi-functional component that simultaneously provides sealing, venting, and valve functions. The bi-directional valves integrated into the over-molded portion allow the same structure to prevent liquid leakage while permitting air venting, eliminating the need for separate sealing and venting components.
2Reliability
If multiple parts are used in container inserts, then sealing and venting functions can be achieved, but assembly time increases
Solution Approach 1:
The over-molded portion is pre-formed with integrated bi-directional valves and sealing features before being molded onto the substrate portion. This preliminary preparation of functional features eliminates the need for separate assembly steps during final insertion, reducing overall assembly time while ensuring proper sealing and venting functions are built-in.
3Reliability
If traditional container inserts are used, then liquid containment is achieved, but self-venting capability is lacking
Solution Approach 1:
The bi-directional valves in the over-molded portion are designed to automatically open and close based on pressure differentials without external control. When liquid is dispensed, the valves automatically close to prevent leakage; when pressure builds up, they automatically open to vent air, providing self-service venting functionality that enhances adaptability while maintaining liquid containment.
4Ease of manufacture
If recyclable materials are used, then environmental sustainability is improved, but manufacturing process complexity increases
Solution Approach 1:
The container insert uses composite construction with a substrate portion made of one material and an over-molded portion made of another material (e.g., TPE). This composite structure allows each material to be optimized for its specific function while remaining recyclable together as a single integrated component, improving sustainability despite the multi-material manufacturing process.
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 results in a more efficient, recyclable, and cost-effective container insert that reduces assembly time and part count, while ensuring effective sealing and self-venting capabilities, enhancing the overall performance of closed loop dispensing systems.
Implementation Method 1
The over-molded portion is comprised of a compressible TPE material
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 to an open position to permit air to pass downwardly therethrough to vent the container
Implementation Method 3
The upper end of the vertically disposed and cylindrical tube of the substrate portion has a horizontally disposed and ring-shaped seal positioned thereon
Data Source
AI summary
A container insert is disclosed for use in a closed loop dispensing system. The insert is press-fitted into the throat of a liquid container. The insert includes a plastic substrate portion and an over-molded portion which is comprised of a TEP material. The container insert is completely recyclable and is automatically self-venting. The insert includes a vertically movable snap-in valve which is movable between an upper closed position and a lower open position. The over-molded portion includes a disc-shaped seal which sealably engages the valve stem of the valve to prevent the upward flow of liquid around the valve when the valve is in either of its closed and open positions.