Beverage Capsule Filter Registration Element for Alignment Precision
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Solution Overview
Problem
The manufacturing of single-serve beverage capsules with nonwoven web materials faces challenges in maintaining tight tolerances due to physical and dimensional inconsistencies, leading to non-uniform filter assemblies that can result in contamination, seal issues, and improper seating of the filter assembly, affecting the quality and volume of the brewed beverage.
Innovation Solution
The introduction of a registration element with specific geometry that temporarily engages with a filter formation tool, allowing for precise radial, angular, and axial alignment of the filter assembly, ensuring consistent formation and seating within the capsule, independent of the thickness uniformity of the filter material, thereby maintaining tight tolerances and improving manufacturing efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If nonwoven web materials are used for filter elements, then manufacturing flexibility and material availability are improved, but dimensional consistency and filter assembly uniformity deteriorate
Solution Approach 1:
A registration element is introduced as an intermediary component between the filter element and the filter formation tool. This registration element provides a stable reference geometry that mediates the dimensional inconsistencies of the nonwoven filter material, enabling precise alignment and consistent filter assembly formation despite variations in the filter element's thickness and dimensions
Solution Approach 2:
The invention changes the reference parameter from the filter element's inherent geometry (which varies) to the registration element's fixed geometry. By shifting the reference frame to a stable component, the system achieves consistent alignment and uniform filter assemblies regardless of the filter material's dimensional variations
2Ease of manufacture
If filter elements with variable thickness are used, then manufacturing cost and material flexibility are improved, but alignment precision and seating consistency deteriorate
Solution Approach 1:
The registration element serves as a mediator that decouples the alignment process from the variable thickness of the filter element. It provides a stable interface with the filter formation tool, ensuring precise radial, angular, and axial alignment without requiring the filter material itself to have tight dimensional tolerances
Solution Approach 2:
The filter assembly formation process is segmented into two independent functions: alignment (handled by the registration element) and filtration (handled by the filter element). This segmentation allows each component to be optimized independently - the registration element for precision alignment and the filter element for cost-effective manufacturing
3Device complexity
If traditional filter formation methods are used, then process simplicity is maintained, but product quality and seal reliability deteriorate
Solution Approach 1:
The registration element acts as a mediator that ensures reliable sealing by providing consistent positioning of the filter assembly relative to the container. It prevents misalignment that would cause sealing failures, thereby improving seal reliability without significantly complicating the overall process
Solution Approach 2:
The registration element performs preliminary alignment of the filter assembly before the actual sealing operation. By establishing correct positioning in advance, it ensures that subsequent sealing operations proceed reliably, preventing seal failures before they occur
4Manufacturing precision
If tight tolerances are enforced on filter elements, then filter assembly consistency is improved, but manufacturing difficulty and cost increase
Solution Approach 1:
The registration element serves as a buffer that absorbs the tolerance requirements. Instead of enforcing tight tolerances on the filter element, the registration element provides the necessary geometric precision, allowing the filter element to be manufactured more easily with relaxed tolerances while still achieving consistent filter assemblies
Data Source
AI summary
The present disclosure relates to a beverage capsule for use in a brewed beverage machine including a piercing element, the capsule comprising: a container defining an interior volume including a base configured for being perforated upon contact with a piercing element; a filter assembly disposed in the interior volume and dividing the interior volume into a first chamber for receiving beverage ingredients and a brewing medium and a second chamber, the assembly comprising: a filter element; and a registration element disposed above the filter element and configured for disposing the filter assembly into the container, wherein the filter element separates the registration element from the second chamber and is arranged to be contacted and pierced by the piercing element.