Temperature-Activated Detergent Sheet Capsule System
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Solution Overview
Problem
Conventional detergents cannot effectively combine bleaching agents and enzymes due to their mutual incompatibility, leading to suboptimal cleaning performance, as bleaching agents decompose enzymes when dissolved in powder form and enzymes cannot be used in liquid detergents.
Innovation Solution
Incorporating bleaching agents and their activators into a wax matrix surrounded by an ionic polymer layer, creating a capsule system that is then integrated into a liquid detergent dispersion applied to a solid carrier substrate, allowing for temperature-dependent activation of enzymes at lower temperatures and bleaching agents at higher temperatures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If bleaching agents and enzymes are combined in conventional detergent formulations, then cleaning performance is improved, but the enzymes are decomposed by the bleaching agents when dissolved, rendering them ineffective
Solution Approach 1:
The detergent formulation is segmented into distinct compartments: enzymes are encapsulated in water-soluble polymer capsules, while bleaching agents remain in the bulk detergent matrix. This physical segmentation prevents direct contact between enzymes and bleaching agents, eliminating the decomposition problem while maintaining both cleaning functions.
Solution Approach 2:
Water-soluble polymer capsules act as intermediaries that selectively release enzymes only under specific conditions (when the capsule dissolves). This intermediary structure protects enzymes from premature exposure to bleaching agents while enabling controlled activation during the washing process.
2Speed
If detergent-active substances are released early in the washing process, then cleaning action begins immediately, but enzymes are exposed to high temperatures that can denature them
Solution Approach 1:
The capsule system is designed to change its solubility parameters in response to temperature changes. The water-soluble polymer capsule remains intact at lower temperatures (protecting enzymes during initial washing stages) but dissolves at higher temperatures (releasing enzymes when they are most effective for specific soil types).
Solution Approach 2:
The capsule structure is pre-designed with temperature-dependent solubility characteristics, allowing it to automatically activate enzyme release at the optimal moment in the washing cycle when temperature conditions are favorable, without requiring external control mechanisms.
3Ease of operation
If all detergent components are dissolved in liquid form, then the detergent is easy to dose and apply, but cleaning performance equivalent to heavy-duty powder detergents cannot be achieved
Solution Approach 1:
The detergent formulation combines liquid and solid phases into a functional composite: water-soluble polymer capsules containing enzymes are suspended in a liquid detergent matrix containing bleaching agents and other cleaning components. This composite structure provides both the ease of liquid detergent dosing and the heavy-duty cleaning performance of powder detergents.
Solution Approach 2:
The formulation uses a nested structure where enzyme-containing capsules are embedded within the liquid detergent matrix. The capsules themselves contain enzyme solutions nested within the polymer structure. This nested architecture allows multiple functional components to coexist in a single dosable unit.
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 method enables the simultaneous and effective use of enzymes and bleaching agents, ensuring optimal cleaning performance by controlling their release and activation within a wash cycle, with enzymes activated around 30°C and bleaching agents activated at 40°C, thereby maintaining enzyme effectiveness and preventing premature bleaching agent activation.
Implementation Method 1
The water-soluble polymer capsule in which the enzymes are incorporated dissolves at higher washing temperatures and releases the enzymes, whereas at lower temperatures the capsule remains intact and protects the enzymes
Implementation Method 2
incorporating oxygen donors and their activators into a wax matrix surrounded by an ionic polymer layer
Implementation Method 3
incorporating oxygen donors and their activators into a wax matrix surrounded by an ionic polymer layer
Data Source
Figure 1~2
AI summary
The present invention describes a method for producing a detergent, characterized by the following steps: (a) incorporation of oxygen donors and their activators into a wax matrix that is surrounded by an ionic polymer layer, so as to obtain a capsule system, (b) incorporation of the capsule system into a liquid detergent. Further, a liquid detergent is described, characterized by a capsule system comprising a wax matrix surrounded by an ionic polymer layer, into which oxygen donors and their activators are incorporated. Further, a method is described for producing a heavy-duty detergent sheet, characterized by the following steps: (a) incorporation of oxygen donors and their activators into a wax matrix surrounded by an ionic polymer layer so as to obtain a capsule system, (b) incorporation of the capsule system into a dispersion consisting of a liquid detergent and a water-insoluble functional additive, (c) application of the dispersion containing the capsule system onto a support substrate that is solid at ambient temperature. Further, a method for producing a heavy-duty detergent sheet is described, characterized by the following steps: (a) incorporation of an oxygen donor into a wax matrix surrounded by an ionic polymer layer so as to obtain a capsule system, (b) incorporation of the capsule system into a support substrate that is solid at ambient temperature, (c) application of a dispersion consisting of a liquid detergent and a water-insoluble functional additive onto the support substrate that is provided with the capsule system. Further, a heavy-duty detergent sheet is described, comprising a support substrate that is solid at ambient temperature and a dispersion consisting of a liquid detergent and a water-insoluble functional additive applied onto the substrate support, characterized in that the heavy-duty detergent sheet further contains a capsule system incorporated into the dispersion or directly onto the support material that contains oxygen donors and their activators incorporated into a wax matrix surrounded by an ionic polymer layer.