Multi-Chamber Water-Soluble Pouch for Dishwashing Detergent
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Solution Overview
Problem
Existing automatic dishwashing detergent pouches are inactive during the pre-wash stage of the dishwashing cycle, limiting the opportunity for enhanced cleaning performance, as the detergent chemistry is only released during the main-wash stage.
Innovation Solution
A multi-chambered automatic dishwashing detergent pouch with a water-soluble film structure, where one chamber is placed in the dispenser drawer and another chamber hangs outside, allowing detergent chemistry to be active during both the pre-wash and main-wash stages, enabling targeted formulation strategies for improved cleaning performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single-chamber detergent pouch is used, then the device complexity is low and ease of manufacture is good, but the detergent chemistry cannot be active during the pre-wash stage, limiting cleaning performance
Solution Approach 1:
The detergent pouch is divided into two separate chambers: a first chamber placed in the dispenser drawer and a second chamber hanging outside the drawer. This segmentation allows different detergent chemistries to be activated at different stages of the washing cycle - the first chamber for main-wash and the second chamber for pre-wash, thereby improving cleaning performance while maintaining a relatively simple overall structure
Solution Approach 2:
The pouch structure extends into a third dimension by having the second chamber hang outside the dispenser drawer, creating a spatial arrangement where the first and second chambers occupy different spatial zones. This dimensional extension enables the detergent to be active during pre-wash without adding significant structural complexity
2Productivity
If the detergent pouch is designed to fit in the dispenser drawer only, then the ease of operation is good, but the detergent chemistry remains inactive during the pre-wash stage before the drawer opens
Solution Approach 1:
The second chamber is positioned to hang outside the dispenser drawer, allowing the detergent chemistry to be activated and work during the pre-wash stage before the drawer opens. This preliminary action enables the detergent to begin cleaning work early in the cycle, improving overall efficiency and reducing the effective time loss during the pre-wash phase
3Adaptability or versatility
If a single pouch contains all detergent chemistry, then the ease of operation is good and device complexity is low, but the detergent formulator cannot target specific chemistry to different washing stages
Solution Approach 1:
The detergent pouch is segmented into two chambers that can be independently formulated with specific chemistries tailored to different washing stages. The first chamber contains detergent chemistry optimized for the main-wash stage, while the second chamber contains chemistry optimized for the pre-wash stage, enabling targeted formulation strategies without excessive structural complexity
Solution Approach 2:
Different regions of the pouch structure have different functional qualities - the first chamber is designed for main-wash chemistry while the second chamber is designed for pre-wash chemistry. This local differentiation of quality allows the detergent formulator to target specific chemistry to specific stages, enhancing the adaptability and versatility of the 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 design enhances the dishwashing cycle performance by allowing specific chemistry to be targeted at both stages, improving shine on glass and plastic dishware and providing a consumer-friendly, single-pouch product with enhanced cleaning capabilities.
Implementation Method 1
a water-soluble film that forms at least two separate chambers that are enclosed by water-soluble film
Data Source
AI summary
An automatic dishwashing detergent water-soluble pouch includes a water-soluble film that forms at least two separate chambers that are enclosed by water-soluble film. The separate chambers are: a first chamber; and a second chamber. The first chamber is connected to the second chamber by a linking portion of water-soluble film, the length of the linking portion of water-soluble film between the first chamber and second chamber is at least 0.5 cm, the first chamber and second chamber include detergent ingredients, and the second chamber includes builder.