Multi-Chamber Detergent Pouch with Linking Portion for Pre-Wash Activation
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Solution Overview
Problem
Existing automatic dishwashing detergent pouches are inactive during the pre-wash stage of the dishwashing cycle, limiting their ability to enhance cleaning performance before being dispensed into the washing zone.
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 hangs outside, allowing detergent chemistry to be active during both the pre-wash and main-wash stages, enabling targeted formulation strategies for improved stain removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single chamber pouch is used, then the device complexity is low, but the detergent chemistry cannot be active during the pre-wash stage, limiting cleaning performance
Solution Approach 1:
The 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, with the first chamber providing main-wash chemistry and the second chamber providing pre-wash chemistry, thereby improving cleaning performance without excessive complexity
Solution Approach 2:
The second chamber is positioned to hang outside the dispenser drawer, allowing its detergent chemistry to be activated during the pre-wash stage before the main washing cycle begins. This preliminary action enables stain removal preparation to occur in advance, improving overall cleaning effectiveness
2Reliability
If the pouch is dispensed into the washing zone at the main-wash stage, then the detergent chemistry can be fully active, but the pre-wash stage cannot benefit from any detergent activity
Solution Approach 1:
The second chamber is designed to be positioned outside the dispenser drawer, enabling its detergent chemistry to be activated during the pre-wash stage. This preliminary action allows stain removal agents to work during the pre-wash phase, preventing stain set-in and improving overall stain removal performance without wasting the pre-wash time
3Adaptability or versatility
If a multi-chambered pouch structure is implemented, then targeted detergent formulation for pre-wash and main-wash stages is enabled, but the manufacturing complexity increases
Solution Approach 1:
The pouch structure is segmented into two chambers that can be manufactured separately and then joined together using a water-soluble linking portion. This segmentation allows independent formulation and optimization of detergent chemistry in each chamber while maintaining a relatively simple manufacturing process through modular assembly
Solution Approach 2:
The water-soluble film material and linking portion are designed with specific solubility parameters to ensure proper dissolution behavior during the washing cycle. The linking portion is formulated to dissolve at appropriate stages, enabling controlled release of detergent chemistry from the second chamber while maintaining structural integrity during storage and dispensing
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 making detergent chemistry active during the pre-wash stage, improving stain removal, especially for tea and baked cheese stains, while maintaining consumer convenience with a single unit dose product.
Implementation Method 1
a water-soluble film that forms at least two separate chambers that are enclosed by water-soluble film
Implementation Method 2
the detergent chemistry contained within the first chamber can access the main-washing step of the dishwashing cycle, whilst the detergent chemistry contained within the second chamber can access the pre-washing step
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 solvent.