Compostable single-serve filter sachet for preparing filter coffee, tea and beverage
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Solution Overview
Problem
Conventional coffee filtering devices with biodegradable materials face issues of non-recyclability and high permittivity, leading to inefficient filtration and environmental impact, as they contaminate waste and fail to maintain quality in beverage preparation.
Innovation Solution
A compactable and foldable coffee strainer filter made from biodegradable materials, with structural changes and a retardant structure to reduce permittivity, allowing for extended filtration time and improved beverage quality, while being compostable and recyclable.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If biodegradable and compostable materials are used for the filter, then environmental friendliness is improved, but permittivity increases leading to reduced filtration quality
Solution Approach 1:
The filter employs a composite structure combining biodegradable material with a retardant layer made of non-woven fabric. This composite approach allows the filter to maintain environmental friendliness while the retardant layer reduces permittivity to ensure proper filtration quality and extraction time.
Solution Approach 2:
The retardant layer is strategically positioned at specific locations on the filter where permittivity needs to be controlled. This localized application ensures that filtration quality is maintained in critical areas while preserving the overall biodegradable nature of the filter material.
2Object-affected harmful factors
If biodegradable materials are used for the filter, then compostability is improved, but recyclability deteriorates due to material contamination
Solution Approach 1:
The filter is designed as a segmented structure with distinct functional layers: a biodegradable filter material layer and a separate retardant layer. This segmentation allows each layer to perform its specific function while enabling the biodegradable portion to be composted separately, improving overall recyclability and compostability.
3Reliability
If filtration area is reduced to lower permittivity, then filtration quality is improved, but extraction time increases
Solution Approach 1:
The retardant layer modifies the flow parameters of water through the filter by reducing permittivity. This parameter change allows for a smaller effective filtration area while maintaining optimal water flow rate and extraction time, thereby improving filtration quality without excessive time loss.
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 a portable, environmentally friendly coffee filtering system that ensures a full-bodied beverage with extended filtration time, minimizing environmental damage and maintaining quality, by using biodegradable materials and structural modifications to reduce permittivity and increase recyclability.
Implementation Method 1
filter sheets made from polylactic acid-based resin... have high permittivity
Implementation Method 2
supporting tabs are foldable so that they start from a first state in which the connecting frame, the internal supporting structure and the external supporting structure fit together in a juxtaposed manner when they are on the same plane
Data Source
AI summary
A sachet compactable coffee filter with bag support made of compostable and/or biodegradable material is provided, including: a filter bag including a cut line in the upper part; supporting tabs welded in the central region of the filter bag including a connecting frame, internal and external supporting structures, with a thin upper and lateral margin of the supporting tabs, and is the part that is welded, using paper welding, to the filter bag; the foldable tabs starting from a first sachet-shaped state to a second state where the internal supporting structure detaches from the connecting frame and the external supporting structure detaches from the internal structure in order to form a tongue that presses the internal part of the receptacle and secures the filter bag by the weld that joins the two, while the external structure presses the external part of the receptacle forming a support for the filter bag.