Fabric Softener Perfume Microcapsules for 24-Hour Scent Retention
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Solution Overview
Problem
Existing fabric softeners fail to maintain a desirable scent on laundered laundry for an extended period, particularly after 24 hours, which is a critical consumer touch point for freshness and cleanliness perception.
Innovation Solution
A fabric softener composition incorporating two specific perfume microcapsules with defined ratios of perfume ingredients, where the first encapsulate perfume composition comprises 76% to 96% of ingredients with a boiling point greater than 250°C and Log P greater than 2.5, and the second encapsulate perfume composition comprises 43% to 63% of such ingredients, providing a balanced scent experience while maintaining the signature character of the APRIL FRESH scent.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If conventional fabric softeners are used, then the fabric is softened during the rinse cycle, but the scent fades significantly after 24 hours, failing to maintain freshness at the critical consumer touch point
Solution Approach 1:
The perfume composition is segmented into two distinct microcapsule types: first perfume microcapsules containing high-boiling-point ingredients (250-400°C) for long-lasting scent, and second perfume microcapsules containing lower-boiling-point ingredients (150-300°C) for immediate freshness. This segmentation allows each capsule type to perform its specialized function, resolving the contradiction between duration and consistency.
Solution Approach 2:
Different regions of the fabric receive different perfume compositions through the dual microcapsule system. The first microcapsules provide a persistent baseline scent throughout the fabric, while the second microcapsules provide localized bursts of freshness at high-contact areas, ensuring consistent scent perception at the 24-hour touch point.
2Duration of action of stationary object
If high-boiling-point perfume ingredients are used to extend scent duration, then the scent lasts longer on fabric, but the signature character and freshness perception of the product is compromised
Solution Approach 1:
The invention merges two previously separate perfume delivery systems into a single fabric softener composition. The first perfume microcapsules (high-boiling-point, 250-400°C) provide long-duration scent, while the second perfume microcapsules (lower-boiling-point, 150-300°C) preserve the signature character. Together, they resolve the contradiction between duration and composition stability.
Solution Approach 2:
The perfume system uses a composite structure of two different microcapsule types with distinct boiling point ranges and fragrance profiles. This composite material approach allows the fabric softener to simultaneously achieve extended scent duration and maintain the original signature character, as each microcapsule type contributes its unique properties to the overall composition.
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 effectively enhances the freshness experience of laundry for consumers one day after washing, maintaining the signature character of the product and providing a delightful scent at multiple touch points, as demonstrated by consumer panel data showing improved ratings compared to competitive products.
Implementation Method 1
a first perfume microcapsule encapsulating a first encapsulate perfume composition, wherein the first encapsulate perfume composition comprises from 76% to 96% of perfume ingredients
Implementation Method 2
a second perfume microcapsule encapsulating a second encapsulate perfume composition, wherein the second encapsulate perfume composition comprises from 43% to 63% of perfume ingredients
Implementation Method 3
perfume ingredients, by weight of the first perfume composition, having a boiling point (at standard pressure) greater than about 250° C. and a Log P greater than 2.5
Implementation Method 4
a Log P greater than 2.5
Data Source
AI summary
Fabric softening compositions comprising two specific encapsulated perfume compositions provide an improved laundry experience to consumers.