Tea Capsule Overflow Layout for Longer Leaf Soaking

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Solution Overview

Problem

Existing beverage preparation machines, designed primarily for coffee, do not adequately prepare tea due to insufficient contact time between hot water and tea leaves, and conventional tea bags are inconvenient to use in such systems.

Innovation Solution

A container design with a front side and back side that allows water to accumulate in the compartment, featuring a discharge opening to control the flow rate and ensure proper extraction, accompanied by tabs for easy handling and identification, ensuring the container is oriented correctly within the machine.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If a container is used in a conventional beverage preparation machine with high pressure water flow, then the machine can prepare coffee quickly, but the contact time between water and tea leaves is insufficient for proper tea preparation

Engineering Contradiction:

Improvebeverage preparation speedVSAvoidcontact time between water and tea leaves

Core Design Contradiction:

ProductivityVSDuration of action of moving object

Solution Approach 1:

The container is divided into two functional zones: an upper accumulation chamber where water accumulates and infuses the tea leaves, and a lower discharge zone where the prepared beverage is released. This segmentation allows the water to remain in contact with the tea leaves for an extended period in the accumulation chamber before being discharged, thereby increasing the contact time while maintaining compatibility with high-pressure beverage preparation machines

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The container is pre-filled with tea leaves before use, and the water flow is designed to accumulate in the upper chamber first, creating a preliminary infusion phase before any discharge occurs. This preliminary action ensures that the tea leaves have sufficient time to extract properly before the beverage is released from the container

Inventive Principle:

Principle #10Preliminary action

2Productivity

If the container allows free flow of water through the compartment, then the brewing process is fast, but the water does not accumulate and the extraction process is insufficient

Engineering Contradiction:

Improvebrewing speedVSAvoidextraction quality

Core Design Contradiction:

ProductivityVSManufacturing precision

Solution Approach 1:

The container incorporates a discharge opening with specific dimensions and positioning in the front side wall, creating a localized control point for water flow. This local quality feature restricts the discharge rate to match the infusion rate, ensuring that water accumulates sufficiently in the upper chamber for proper extraction while still allowing the process to complete at a reasonable speed

Inventive Principle:

Principle #3Local quality

3Ease of operation

If the container has a symmetrical shape for easy placement, then the container can be inserted in any orientation, but the water accumulation and discharge control becomes difficult

Engineering Contradiction:

Improvecontainer placement flexibilityVSAvoidwater flow control mechanism

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The container features an asymmetric front side wall with a specifically positioned discharge opening, while the overall container shape remains substantially round for easy placement. The asymmetric discharge opening location creates a defined water flow path that promotes accumulation in the upper chamber and controlled discharge, achieving both ease of placement and effective water flow control without requiring complex mechanical mechanisms

Inventive Principle:

Principle #4Asymmetry

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

Facilitates longer contact time for tea preparation, improves extraction quality, and allows easy use in beverage preparation machines by ensuring proper orientation and handling, while reducing waste through efficient manufacturing.

Implementation Method 1

the water accumulates in the compartment, and thus the plant material is properly soaked in the water, thereby properly effecting the extraction process

Methodology Applied

Scientific EffectAbsorption: Absorption (physical)

Implementation Method 2

the discharge opening of the functions as an overflow (under a controlled flow sequence) and thus discharges the tea beverage from the container

Methodology Applied

Scientific EffectOverflow flow control:

Data Source

PatentEP4077165B1Container with a plant material for preparing a tea beverage

Publication Date: 2026.03.18 SOCIETE DES PRODUITS NESTLE SA

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AI summary

The invention relates to a container (1) for use in a beverage preparation machine. The container (1) has a non-symmetrical shape such that it is inserted functionally inside the beverage preparation machine with a specific orientation. The container (1) comprises a container body (2) having a back side (40) and a front side (3), the back side (40) and the front side (3) delimiting a compartment adapted to be traversed by water injected therein by the beverage preparation machine through the back side (40), and a plant material for preparing a tea beverage, the plant material being inside said compartment. The front side (3) comprises at least one discharge opening (31) arranged in the upper half, preferably arranged in the upper third part, of said front side (3) when said container (1) is functionally inserted in the beverage preparation machine in order to keep water in the compartment at a defined level (L) that is above the median height (M) of said container (1), before the tea beverage is dispensed outside said container (1), thus allowing soaking of the plant material in said water.