Drink Capsule Linear Cut Venting for Consistent Pre-Infusion
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Solution Overview
Problem
Existing methods for preparing espresso using disposable capsules are inefficient in achieving consistent quality due to factors like incomplete penetration of water into coffee granules, leading to suboptimal extraction of flavors and aromas, and are often complex and costly to implement.
Innovation Solution
A method involving a capsule with a pre-made linear cut in the second wall that allows air to escape but initially blocks liquid, followed by increased pressure to deform the wall and facilitate deep penetration of water, ensuring efficient pre-infusion and extraction of organoleptic substances.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If pre-infusion is used to improve water penetration into coffee granules, then extraction quality improves, but the process becomes more complex and costly
Solution Approach 1:
The patent applies preliminary action by pre-cutting linear slots in the capsule base before use. These slots are initially sealed by deformation but can be opened by pressure during brewing. This pre-prepared structure enables reliable pre-infusion without requiring complex control systems, resolving the contradiction between extraction quality consistency and process complexity
Solution Approach 2:
The patent changes the physical state of the capsule base from sealed to open through pressure-induced deformation. The linear slots transition from a closed state (preventing liquid passage) to an open state (allowing air and liquid flow) based on pressure parameters. This parameter change enables simple yet effective pre-infusion functionality
2Device complexity
If simple piercing methods are used to create opening, then device complexity is reduced, but water penetration into coffee granules is insufficient
Solution Approach 1:
The linear slots are pre-formed in the capsule base during manufacturing, but their opening function is activated only when needed through pressure deformation. This preliminary preparation of the opening path ensures deep water penetration capability while keeping the opening mechanism simple - no complex piercing tools or multi-step processes are required
Solution Approach 2:
The opening is segmented into linear slots rather than a single puncture point. This segmentation allows water to penetrate through multiple pathways simultaneously, improving overall penetration efficiency while maintaining device simplicity
3Ease of manufacture
If traditional opening methods are used, then manufacturing is simpler, but air trapping prevents effective pre-infusion
Solution Approach 1:
The linear slots are pre-cut during capsule manufacturing, creating designated air escape paths before the capsule is used. This preliminary action ensures that when the slots open during brewing, air can efficiently escape and water can penetrate the coffee granules. The manufacturing process remains simple (just adding a cutting step) while pre-infusion effectiveness is guaranteed
Solution Approach 2:
The linear slots act as an intermediary structure between the sealed capsule and the open brewing state. They provide a controlled transition path for air and liquid, mediating the pressure changes and enabling reliable pre-infusion without complicating the overall system
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
This approach ensures reliable and consistent extraction of coffee flavors and aromas, reducing the risk of jamming and maintaining quality over time without requiring complex or expensive equipment.
Implementation Method 1
increased pressure to deform the wall and facilitate deep penetration of water
Implementation Method 2
deform the wall and facilitate deep penetration of water
Implementation Method 3
the water to deeply penetrate the micro-pores of the coffee granules/powder, thanks to its own pressure compressing and therefore reducing the volume of the gaseous substances present in said pores
Implementation Method 4
extraction of the aromas and essential oils found in the granule which represent most of those possessed by the coffee
Data Source
AI summary
A method for preparing a drink by passing hot water in a capsule (1), in which first at least one cut (10) extending in a linear fashion is made through the second wall (3) of the capsule (1), substantially without removing material from it. The adjacent portions (11) of the second wall (3) delimiting the cut (10) are then allowed to draw near one another again if necessary, then, by injecting hot water into the capsule, the internal pressure in the capsule is increased to cause at least partial expulsion of the air contained in it substantially without dispensing the liquid, and, then, by deformation of the second wall (3), the adjacent portions (11) delimiting the cut (10) are moved away from one another, allowing the drink to flow out. The invention also relates to an apparatus and a capsule for implementing this method.