Water-Soluble Pack Segmentation for Aqueous Cleaning Stability
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Solution Overview
Problem
Current water-soluble cleaning packs face challenges in stability due to moisture absorption from the environment and migration between compartments, especially with moisture-sensitive ingredients like enzymes and bleach, and struggle to incorporate aqueous compositions without compromising stability or requiring energy-intensive drying of liquid ingredients.
Innovation Solution
A water-soluble pack with compartments enveloped by a warm water-soluble material, specifically polyvinyl acetate with a high degree of hydrolysis, allowing for aqueous compositions with significant free water and separating incompatible ingredients, reducing moisture migration and enhancing handling and manufacturing ease.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If water-soluble material is used to enclose cleaning composition, then ease of use and precise dosing are improved, but moisture absorption from environment and migration between compartments occurs, worsening stability
Solution Approach 1:
The pack is divided into multiple compartments separated by partition walls made of water-soluble material. Each compartment can contain different cleaning compositions (e.g., enzyme-containing composition in one compartment, bleach-containing composition in another), preventing moisture migration and chemical interactions between incompatible ingredients while maintaining the convenience of water-soluble packaging.
Solution Approach 2:
The partition walls act as intermediary structures that physically separate different cleaning compositions within the same pack. These walls are made of water-soluble material that dissolves during use, allowing the compositions to mix and work together, but remains intact during storage to prevent moisture migration and maintain stability.
2Adaptability or versatility
If aqueous compositions are incorporated into the pack, then formulation flexibility is improved, but moisture sensitivity and stability issues worsen
Solution Approach 1:
Aqueous compositions are placed in separate compartments isolated by water-soluble partition walls. This allows the pack to accommodate aqueous cleaning compositions (including moisture-sensitive ingredients like enzymes and bleach) without compromising stability, as the partition walls prevent moisture migration between compartments during storage.
Solution Approach 2:
The partition walls are designed with specific solubility characteristics (water-soluble but stable under storage conditions). This parameter change allows the material to maintain structural integrity during storage, preventing moisture migration, while dissolving during use to release the aqueous compositions. This enables formulation flexibility with aqueous compositions without sacrificing stability.
3Quantity of substance
If liquid ingredients are incorporated into solid detergent, then ingredient delivery is improved, but dissolution characteristics and moisture pick-up worsen
Solution Approach 1:
Liquid ingredients are incorporated into aqueous compositions that are contained in separate compartments within the water-soluble pack. This segmentation allows liquid ingredients to be delivered in their natural state without needing to be absorbed onto solid carriers, preserving the dissolution characteristics of the solid detergent components while enabling effective delivery of liquid ingredients.
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
The solution provides improved stability under humid conditions, easier handling with wet hands, and controlled release of ingredients, ensuring effective cleaning while maintaining product integrity and reducing energy consumption.
Implementation Method 1
The pack comprises one or more compartments. At least one compartment contains an aqueous cleaning composition or an aqueous auxiliary composition. The aqueous composition is enveloped by a warm water soluble material.
Implementation Method 2
Water-soluble packs consist of water-soluble enveloping material which encloses a cleaning composition.
Data Source
AI summary
A cleaning product in the form of a single or multi-compartment water-soluble pack comprising a cleaning composition and enveloping material, wherein at least one compartment contains an aqueous cleaning composition or an aqueous auxiliary composition enveloped by a warm water soluble material and wherein the aqueous cleaning or auxiliary composition comprises more than 15% by weight of the aqueous composition of free water.