Beverage Capsule Recessed Sealing for Reliable Ejection
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Solution Overview
Problem
Existing beverage capsules with aluminum casings and cellulose-based sealing elements suffer from defective dispensing operations, including failure to uncouple automatically from dispensing machines and fluidic leaks, leading to poor beverage extraction quality and increased user risk due to complex and difficult-to-access internal mechanisms.
Innovation Solution
A capsule design featuring an aluminum casing with a cellulose-based paper sealing element, where the sealing element is strategically positioned within a recessed area of the flanged edge to minimize friction with ejection guides and ensure proper uncoupling, and the flanged edge is shaped to facilitate a secure fluidic seal without requiring additional fixation methods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a cellulose-based sealing element is used instead of silicone rubber to enable recyclability, then the capsule becomes completely recyclable and compostable, but the sealing element creates friction with ejection guides causing defective dispensing operations and failure to uncouple automatically
Solution Approach 1:
The sealing element is extracted from the flanged edge by placing it in a recess, separating its sealing function from the ejection path. This allows the cellulose-based sealing element to maintain recyclability while avoiding contact with ejection guides that would cause friction and dispensing failures.
Solution Approach 2:
The recess acts as an intermediary structure between the sealing element and the flanged edge. It positions the sealing element in a location where it can perform its sealing function without interfering with the ejection guides, thus mediating between the need for sealing and the need for smooth ejection.
2Reliability
If the sealing element is positioned on the flanged edge to ensure fluidic seal, then sealing effectiveness is improved, but friction with ejection guides increases causing capsules to remain suspended in the machine
Solution Approach 1:
The flanged edge structure is segmented into multiple functional zones: a recess for the sealing element, an annular bead for structural support, and exposed portions for ejection guide interaction. This segmentation allows each zone to perform its specific function without interfering with others.
Solution Approach 2:
The sealing element is moved from a radial position on the flanged edge to an axial position within a recess. This dimensional change allows the sealing element to maintain its sealing function while being removed from the path of the ejection guides, solving the conflict between sealing and ejection.
3Reliability
If additional fixation methods are used to secure the sealing element, then sealing stability is improved, but device complexity and production difficulty increase
Solution Approach 1:
The recess for the sealing element is merged with the annular bead structure, both being formed by folding the flanged edge. This integration creates a unified structure that provides both sealing and structural functions without requiring separate fixation components.
Solution Approach 2:
The flanged edge structure serves itself by forming its own recess and annular bead through folding. The sealing element is retained by the recess geometry itself, eliminating the need for additional fixation methods such as adhesives, clips, or mechanical fasteners.
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 design significantly reduces defective dispensing operations and fluidic losses, allowing for safe and efficient beverage extraction without manual intervention in the dispensing machine's internal mechanisms, while being economical and easy to produce.
Implementation Method 1
a sealing element arranged at the flanged edge which is configured to make a fluidic seal with the dispensing machine, in particular with a protrusion-shaped housing element of the dispensing machine
Implementation Method 2
in use, is crushed between the housing element of the dispensing machine and the dispensing plate of the dispensing device
Implementation Method 3
it enables the initial product to be kept a long time inside the cavity, being impermeable to oxygen and to water vapour
Implementation Method 4
the base wall of the capsule is perforated by an injection device to inject pressurized liquid, for example water, into the capsule
Implementation Method 5
the covering element is perforated by a dispensing device of the dispensing machine to enable the final product to be dispensed
Data Source
AI summary
A capsule includes an aluminum casing extending about an axis, which includes base and side walls defining a cavity containing a product, and a flanged edge extending from said side wall and including, at the outer end, an annular bead. A covering element is fixed to the flanged edge to close the cavity; a flanged edge includes a first portion which includes the annular bead and an annular second portion contiguous with the side defined in which the ring is accommodated, the free edge of the annular bead at a respective first distance from the first plane that is greater than or the same as the thickness of the ring, so that the recess.