Polymer Fragrance Microcapsule Coating for Controlled Surface Release
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Solution Overview
Problem
Conventional encapsulated fragrances do not provide controlled release of fragrance over an extended period and in response to repeated product use.
Innovation Solution
Polymer encapsulated fragrances coated with a water-based binding agent are applied to a hard surface, allowing controlled release of fragrance over time through microcapsule rupture during normal use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If conventional encapsulated fragrances are used, then fragrance protection from degradation is achieved, but controlled release over extended period and repeated use is not provided
Solution Approach 1:
The patent changes the physical and chemical parameters of the encapsulation system by using polymeric microcapsules with specific wall thickness, cross-linking density, and composition. These parameter adjustments enable the microcapsules to maintain structural integrity during storage while allowing controlled rupture and fragrance release during repeated product use, thereby achieving both extended duration and reliable controlled release performance
Solution Approach 2:
The patent employs composite material structures where fragrance molecules are encapsulated within polymeric microcapsule walls. The composite system combines the protective properties of the polymeric shell with the volatile fragrance core, creating a hierarchical structure that provides both long-term protection and controlled release through mechanisms such as wall degradation, mechanical rupture, or diffusion under specific usage conditions
2Reliability
If microcapsules are applied to hard surface with water-based binding agent, then consistent fragrance delivery is achieved, but premature rupture must be prevented
Solution Approach 1:
The patent applies local quality differentiation by using a water-based binding agent that selectively adheres to the microcapsule surface without penetrating or degrading the polymeric wall. The binding agent creates a localized adhesive interface between the microcapsules and the hard surface, ensuring consistent fragrance delivery while the bulk microcapsule structure maintains its integrity and prevents premature rupture
Solution Approach 2:
The water-based binding agent acts as an intermediary substance between the microcapsules and the hard surface. It facilitates attachment and ensures consistent fragrance delivery during product use, while being sufficiently inert and gentle to prevent premature rupture of the microcapsule walls. The binding agent mediates the interaction without compromising microcapsule stability
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
Provides sustained fragrance release in response to product usage, ensuring consistent fragrance delivery without premature rupture.
Implementation Method 1
a binding agent having a water solubility of at least 0.1 mol/L, wherein the binding agent covers at least 80% of an outer surface of the microcapsules
Implementation Method 2
controlled release of the fragrance is provided over time as the product is subjected to normal handling by a user
Data Source
AI summary
The present disclosure relates to fragrance materials encapsulated within polymeric materials in the form of microcapsules of polymer encapsulated fragrance. The microcapsules are mixed with a water-based binding agent so that a coating forms on the microcapsule in situ, after which the coated microcapsules may be applied to hard surfaces of a product, from which controlled release of the fragrance is provided over time as the product is subjected to normal handling by a user.