Portion Holder Sealing Design for Compostable Beverage Capsules
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Solution Overview
Problem
Existing beverage preparation systems face challenges in optimizing the adaptation of brewing devices for single portions of beverage precursor substances, particularly in terms of ergonomic design, reliability, and environmental impact due to the use of non-compostable materials and mechanical wear issues with hinged connections.
Innovation Solution
A beverage preparation system featuring a portion holder with a container and lid part that uses a bi-material injection-molded, elastically deformable material for effective liquid sealing and user-actionable mechanical retention, minimizing leakage and hazardous spills, and utilizing compostable materials for the single portions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a swivelling connection is used to connect the lid part to the container part, then the device allows easy opening and closing operation, but the connection suffers from mechanical wear and reduced reliability under intensive use
Solution Approach 1:
The patent employs a disposable portion holder that eliminates the need for durable, reusable hinged connections. The entire holder including the lid and container is designed for single use, thereby avoiding the mechanical wear and reliability issues associated with repeated swivelling operations while maintaining ease of operation during the single use cycle.
2Device complexity
If conventional sealing means are used at the interface between container and lid parts, then the structure remains simple, but liquid sealing is insufficient under pressurized flow conditions
Solution Approach 1:
The patent utilizes the elastic properties of the deformable material to dynamically adjust the sealing interface parameters. Under pressurized flow conditions, the material deforms elastically to maintain optimal contact pressure and sealing geometry, ensuring reliable liquid sealing without requiring complex mechanical sealing structures.
Solution Approach 2:
The portion holder is manufactured from a bi-material injection-molded elastically deformable material that combines the properties of structural integrity and elastic compliance. This composite material approach enables the sealing surfaces to adapt elastically to pressure variations while maintaining the overall structural form, achieving effective sealing without complex multi-component sealing systems.
3Strength
If metallic and plastic materials are used for single portion capsules, then the capsules provide good structural integrity, but they create environmental pollution and are not compostable
Solution Approach 1:
The patent employs a biodegradable or compostable elastically deformable material that maintains the necessary mechanical strength for structural integrity during use, while enabling environmental degradation after disposal. This material substitution resolves the contradiction between providing sufficient strength for capsule functionality and eliminating environmental pollution, as the material can be composted rather than persisting as waste like conventional plastics and metals.
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 system provides reliable liquid sealing and easy operation, reducing mechanical wear and environmental impact while ensuring safe handling and efficient extraction of beverages.
Implementation Method 1
container part made of a bi-material injection-molded, elastically deformable material
Data Source
AI summary
The present invention refers to systems and process associated with beverage preparation based upon the extraction of a single portion (1) of a pre-measured quantity of precursor substance in a brewing apparatus (4), whereby said single portion (1) presents a compostable confinement (2) and can be collected inside of a portion holder (3) that is adapted so that can be retained inside a cavity of said brewing apparatus (4). In particular, the present invention relates addresses the problem of ensuring effective and reliable sealed operation of the portion holder (3).