Encapsulated Laundry Composition for Enzyme-Stable Detergent Sheets
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Solution Overview
Problem
Existing laundry tablets face issues of poor enzyme stability, inability to incorporate essence microcapsules due to high-temperature drying, and reduced decontamination and softening effects due to direct addition of surfactants and softeners, leading to increased costs and environmental impact.
Innovation Solution
A laundry composition envelops functional materials like softening particles, fragrant particles, and enzyme preparations in a film-forming wrapping material, using a specific ratio and combination of film-forming agents, surfactants, and bacteriostatic agents to maintain efficacy and prevent direct contact with air.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If high-temperature drying (90-105°C) is used to prepare laundry tablets, then the tablets can be formed and dried, but enzyme stability deteriorates causing partial inactivation
Solution Approach 1:
The patent divides the laundry tablet into separate functional layers: an outer wrapping layer and an inner functional material layer. This segmentation allows the wrapping layer to be formed at high temperature while the functional materials (enzymes, active oxygen particles) in the inner layer are protected from thermal degradation, resolving the contradiction between ease of manufacture and enzyme stability.
Solution Approach 2:
The wrapping layer acts as an intermediary protective barrier between the high-temperature processing environment and the temperature-sensitive functional materials. This intermediary structure enables high-temperature drying for tablet formation while preventing direct thermal exposure to enzymes and active oxygen particles, thus maintaining their stability.
2Ease of operation
If conventional essence is added for fragrance extraction, then fragrance can be provided, but surfactants are consumed leading to reduced decontamination ability
Solution Approach 1:
The patent changes the physical state and delivery mechanism of fragrance by using essence microcapsules instead of conventional liquid essence. The microcapsules are dispersed throughout the functional material layer and release fragrance gradually during the washing process, eliminating the need for large amounts of surfactant-based conventional essence while maintaining effective fragrance provision and decontamination ability.
3Adaptability or versatility
If softener is directly added to laundry tablets, then softening function is provided, but anionic surfactant is consumed reducing decontamination effect
Solution Approach 1:
The patent segments the functional materials into separate compartments within the tablet structure. The softener is contained in the inner functional material layer, separated from the anionic surfactants in the wrapping layer. This spatial segmentation prevents direct contact and chemical reaction between the softener and anionic surfactants, allowing both functions to be performed simultaneously without mutual interference.
Solution Approach 2:
The wrapping layer serves as an intermediary barrier that prevents direct interaction between the cationic softener and anionic surfactants. This intermediary structure allows both components to coexist in the tablet while preventing the harmful reaction that would otherwise consume the anionic surfactant and reduce decontamination effectiveness.
4Ease of operation
If PVA film is used to wrap laundry detergent pods, then convenience and portability are improved, but environmental friendliness deteriorates due to high plastic content
Solution Approach 1:
The patent changes the material composition parameter of the wrapping layer by replacing traditional PVA plastic film with biodegradable alternatives such as starch-based films, cellulose derivatives, or other natural polymer materials. This parameter change maintains the protective and soluble functions of the wrapping layer while eliminating the environmental harm associated with PVA plastic, thus resolving the contradiction between convenience and environmental friendliness.
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 composition achieves integrated functions of cleaning, softening, and fragrance-retaining while preserving the effectiveness of the functional materials, reducing environmental impact by using degradable film-forming agents and preventing enzyme and active oxygen particle degradation.
Implementation Method 1
a wrapping material, a functional material enveloped in the wrapping material
Implementation Method 2
an adhesive for bonding the wrapping material
Implementation Method 3
the wrapping material is prepared from raw materials of 1～5％ of a first film-forming agent, 10～20％ of a second film-forming agent, 10～30％ of a surfactant
Data Source
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AI summary
A laundry composition and a preparation method therefor, relating to the technical field of everyday chemical products. The laundry composition comprises: an encapsulation material, a functional component encapsulated within the encapsulation material, and a binder used for bonding the encapsulation material; the encapsulation material is a film-forming material having a washing function, and the functional component comprises one or more of softening particles, scent particles, active oxygen particles, and an enzyme preparation. By using the encapsulation material having a washing function to encapsulate the functional component, integration of cleaning and stain removal, softening, and scenting is achieved; furthermore, because the softening particles, the scent particles, the active oxygen particles, and the enzyme preparation in the functional component are not directly added to the encapsulation material, the functional component does not lose effectiveness even if the encapsulation material is subjected to high-temperature press-forming, thus overcoming the defect of poor effects or high costs caused by functional components being added directly to existing laundry detergent sheets.