Double Layer Detergent Tablet for Anti-Cross-Color Protection
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Solution Overview
Problem
Existing liquid detergent products with strong anionic surfactant systems and cationic components fail to effectively prevent cross-color phenomena and maintain detergency due to mutual adsorption issues, leading to reduced performance in practical applications.
Innovation Solution
A double layer detergent tablet is developed, incorporating a cationic color-absorbing fiber with a solid detergent composition that includes polyvinyl alcohol, a mixture of anionic and non-ionic surfactants, polyvinylpyrrolidone, and bio-enzymes, which enhances color protection and detergency by preventing dye transfer and redeposition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If strong anionic surfactant system and cationic components are added to liquid detergent to prevent cross-color phenomenon, then anti-cross-color function is improved, but detergency effect is greatly reduced due to electrostatic adsorption between anionic surfactant and cationic components
Solution Approach 1:
The invention divides the detergent into two separate layers: the first layer contains cationic components for anti-cross-color function, while the second layer contains anionic surfactants for detergency. This segmentation prevents electrostatic adsorption between the two components, allowing each layer to perform its function independently without interference.
Solution Approach 2:
The invention introduces a water-insoluble载体 (carrier) as an intermediary to carry the cationic anti-cross-color components. This carrier prevents direct contact and electrostatic adsorption between cationic components and anionic surfactants, while still allowing the cationic components to perform their anti-cross-color function through contact with the carrier surface.
2Reliability
If cationic anti-cross-color components are added to liquid detergent, then cross-color prevention is improved, but the components are quickly consumed and anti-cross-color effect is not obvious in practical applications
Solution Approach 1:
The invention pre-coats the water-insoluble carrier with cationic anti-cross-color components during the manufacturing process. This preliminary action ensures that the anti-cross-color components are already positioned on the carrier surface before use, allowing them to immediately interact with and adsorb dye molecules from the beginning of the washing process, thereby extending their effective duration.
Solution Approach 2:
The water-insoluble carrier with pre-coated cationic components automatically performs the anti-cross-color function throughout the washing process without requiring additional input. The carrier continuously adsorbs dye molecules from the washing water as it circulates, providing sustained anti-cross-color protection throughout the entire washing cycle.
3Adaptability or versatility
If anionic surfactant and cationic anti-cross-color components are mixed in liquid detergent, then both detergency and anti-cross-color function are intended, but mutual adsorption reduces both functions
Solution Approach 1:
The invention segments the detergent into two distinct layers with clear functional separation. The first layer contains cationic anti-cross-color components on a water-insoluble carrier, while the second layer contains anionic surfactants. This segmentation allows both functions to coexist without mutual interference, as the two layers remain physically separated during storage and only interact minimally during the washing process.
Solution Approach 2:
The water-insoluble carrier acts as an intermediary that carries cationic anti-cross-color components without allowing them to directly interact with anionic surfactants. This intermediary prevents mutual adsorption between the two types of components, enabling both detergency and anti-cross-color functions to perform at their full potential simultaneously.
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 double layer detergent tablet effectively prevents cross-coloring and improves detergency by ensuring quick dye absorption and retention on the color-absorbing fiber, while maintaining effective cleaning properties, even with heavy dirt and protein-based stains.
Implementation Method 1
desorbed dye is quickly adsorbed on the color absorbing fiber
Implementation Method 2
the surfactant is a mixture of an anionic surfactant and a non-ionic surfactant
Implementation Method 3
the added polyvinylpyrrolidone has good anti-redeposition property to dirt
Data Source
AI summary
The present application relates to the technical field of daily cleaning and washing products, and particularly to a double layer detergent tablet and a preparation method thereof. The double layer detergent tablet includes a color absorbing fiber and a solid detergent adhered to the color absorbing fiber, the solid detergent includes the following components by mass percentage: 8-30% of polyvinyl alcohol, 10-40% of surfactant, 0.5-5% of polyvinylpyrrolidone, 1-5% of glycerin, 0.5-5% of water softener, 0.1-1% of plant essence, 14-79.9% of deionized water. The surfactant is a mixture of an anionic surfactant and a non-ionic surfactant; the anionic surfactant is a mixture of sodium coco-sulfate and sodium alpha-olefin sulfonate; and the non-ionic surfactant is a mixture of alkyl glycoside, fatty alcohol polyoxyethylene ether, isomeric alcohol polyoxyethylene ether and fatty acid methyl ester ethoxy compound.