Monomaterial Closure Cap with Mixing Chamber for Fluid Dosing
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Solution Overview
Problem
Existing fluid containers face issues with non-recyclable and biodegradable seals, tamper evident indicators that create plastic waste, material complexity leading to high manufacturing costs, and leakage and dosing problems, especially with thixotropic fluids.
Innovation Solution
A monomaterial closure cap with a flip-top lid and disk that forms a mixing chamber, allowing controlled dispensing and mixing of separated serum back into the fluid, using a single material like polypropylene for recyclability and reducing leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If foil seals and plastic portions are used for tamper evident indicators, then consumer safety is improved, but recyclability deteriorates due to non-recyclable materials and difficult-to-recycle broken pieces
Solution Approach 1:
The closure cap is constructed as a monomaterial structure made entirely of polypropylene, eliminating the need for separate foil seals and plastic portions. This homogeneous material composition maintains tamper evident functionality while significantly improving recyclability by removing material incompatibility issues that plague multi-material constructions.
2Reliability
If multiple materials are used in the closure cap (e.g., silicon membrane valve with polypropylene cap), then functional performance is improved, but manufacturing cost and complexity increase
Solution Approach 1:
The entire closure cap including the valve mechanism is formed from a single polypropylene material through injection molding. This eliminates the need for separate silicon membrane valves and reduces assembly complexity while maintaining the necessary functional performance of the valve mechanism.
Solution Approach 2:
The mechanical valve system is integrated directly into the polypropylene cap structure through injection molding, replacing the need for separate silicon membrane components and complex assembly mechanisms. The valve function is achieved through the molded geometry of the monomaterial cap itself.
3Reliability
If membrane valves are used for dispensing, then product retention is improved, but leakage and dosing control deteriorate due to high velocity discharge
Solution Approach 1:
The closure cap incorporates a dynamic flip-top lid that can be positioned in multiple states (closed, partially open, fully open) to control fluid discharge. This dynamic mechanism allows users to adjust the opening degree to control dosing precision and reduce high-velocity discharge, while the valve mechanism maintains product retention when closed.
Solution Approach 2:
The valve opening parameter is made variable through the flip-top mechanism, allowing adjustment between fully closed (maximum retention), partially open (controlled dosing), and fully open positions. This parameter control enables users to optimize between product retention and dosing precision based on usage requirements.
4Productivity
If product is dispensed at high velocity through the valve, then dispensing speed is improved, but splatter and dosing control deteriorate
Solution Approach 1:
The flip-top lid provides dynamic control over the dispensing process, allowing users to start with a partially open position for controlled, low-velocity discharge that minimizes splatter. As users become familiar with the product flow, they can increase the opening degree to achieve higher dispensing speeds when splatter is less of a concern.
Solution Approach 2:
The dispensing action is made periodic and controllable through the flip-top mechanism, allowing users to open slightly, dispense a small amount, close, and repeat as needed. This periodic control enables precise dosing and prevents excessive high-velocity discharge that causes splatter, while still achieving adequate dispensing speed over time.
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 provides stable, recyclable, and cost-effective fluid dispensing with reduced leakage and splatter, enabling efficient dosing and mixing without the need for separate tamper evident seals, while maintaining container integrity.
Implementation Method 1
A monomaterial closure cap with a flip-top lid and disk that forms a mixing chamber, allowing controlled dispensing and mixing of separated serum back into the fluid
Implementation Method 2
These are sometimes used with inverted bottles that rest on their caps when not in use so that gravity retains the product in position adjacent the valve
Data Source
AI summary
In some embodiments, apparatuses and methods are provided herein useful to contain and dispense a fluid, such as a thixotropic fluid. In some embodiments, a bottle having a closure cap includes a control device, a base, and a disk, where the base and disk define a mixing chamber configured to facilitate mixing of any serum or liquid separated from the fluid back therein. In some embodiments, a dispensing bottle includes a non-removable closure cap with a tamper evident feature that indicates whether the cap was previously opened. By one approach, the dispensing bottle includes discontinuous threads on a bottle neck and ratchet projections on a closure cap that engage the discontinuous thread(s) to prevent or inhibit manual removal of the cap from the bottle.