Cube-Shaped Coffee Capsule for Even Extraction and Lower Waste

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Solution Overview

Problem

Existing beverage extraction capsules face issues with material compaction during brewing, energy balance, and complex packaging, leading to inefficiencies in extraction and waste management.

Innovation Solution

A cube-shaped capsule without protruding collars or sieving elements, made of uniform material, allowing for compression from multiple sides and improved packability, with a brewing module designed to accommodate the cube shape and facilitate even extraction.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If aluminum capsules are used, then freshness preservation is improved, but energy consumption increases

Engineering Contradiction:

Improvefreshness preservationVSAvoidenergy consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The patent changes the material parameter from aluminum to plastic (polypropylene or polyethylene terephthalate), fundamentally altering the energy consumption characteristics while maintaining the capsule's primary function of preserving coffee freshness through airtight sealing

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent employs disposable plastic capsules that are inexpensive to produce and dispose of, replacing expensive aluminum capsules. The low cost allows for single-use applications, eliminating the need for energy-intensive aluminum production while maintaining freshness preservation through proper sealing mechanisms

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

2Use of energy by moving object

If polypropylene capsules are used, then energy consumption is reduced, but piercing mechanism requirements increase

Engineering Contradiction:

Improveenergy consumptionVSAvoidpiercing mechanism requirements

Core Design Contradiction:

Use of energy by moving objectVSEase of manufacture

Solution Approach 1:

The patent specifies wall thickness parameters (0.1-0.5mm) and material properties (polypropylene or PET) that balance ease of piercing with energy efficiency. The controlled thickness parameter ensures the capsule is thin enough to be easily pierced by standard brewing machine needles while maintaining structural integrity for pressure containment

Inventive Principle:

Principle #35Parameter changes

3Loss of substance

If deep drawn capsules are used, then material consumption is reduced, but shape flexibility decreases

Engineering Contradiction:

Improvematerial consumptionVSAvoidshape flexibility

Core Design Contradiction:

Loss of substanceVSShape

Solution Approach 1:

The patent divides the capsule into distinct functional segments: a conical deep-drawn body for material efficiency, a separate collar structure for sealing and positioning, and optional filtering elements. This segmentation allows the main body to be optimally deep-drawn for material savings while the collar provides the necessary shape variations for functional requirements

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The collar structure serves multiple functions: sealing the capsule during brewing, positioning it in the brewing chamber, and providing attachment points for filtering means. This multi-functionality eliminates the need for additional structural elements, maintaining material efficiency while achieving shape flexibility where needed

Inventive Principle:

Principle #6Universality (Multi-functionality)

4Reliability

If capsules with integrated filtering means are used, then extraction quality is improved, but device complexity increases

Engineering Contradiction:

Improveextraction qualityVSAvoidcapsule structure complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent merges the filtering function directly into the capsule structure by integrating filtering elements (such as screens or meshes) within the capsule walls or at the discharge end. This combination eliminates the need for separate external filters, reducing device complexity while maintaining extraction quality through direct filtration at the source

Inventive Principle:

Principle #5Merging (Combining)

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

Enhances material compaction, reduces waste, and improves energy efficiency by allowing for flexible placement and reduced packaging needs, while maintaining effective extraction under varying pressures.

Implementation Method 1

the extraction material is, for example, closed off in an airtight manner

Methodology Applied

Scientific EffectAirtight sealing:

Implementation Method 2

liquid flows through the capsule at high speed

Methodology Applied

Scientific EffectPressure-driven flow: Pressure Gradient

Implementation Method 3

extraction liquid—generally hot water—is introduced

Methodology Applied

Scientific EffectExtraction:

Implementation Method 4

the capsule must thereby withstand a considerable pressure inside it, for example of 5-20 bar

Methodology Applied

Scientific EffectPressure resistance: Pressure Increase

Data Source

PatentUS10039410B2System for brewing coffee

Publication Date: 2018.08.07 QBO COFFEE GMBH

AI summary

A capsule to form a closed interior filled with an extraction product or extract can be perforated in a known manner by perforation elements of an injection device or a discharge device in order to introduce an extraction liquid and to discharge an extraction product produced in the interior of the capsule following an extraction process. The capsule has the shape of a cuboid or a die.