Microcapsule Pastilles for Fragrance Retention in Solid Consumer Products
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Solution Overview
Problem
Existing consumer products, such as detergents and fabric softeners, face challenges in maintaining fragrance impressions due to interactions between fragrant substances and other components, leading to premature volatilization and reduced product quality.
Innovation Solution
A composition comprising pastilles with microcapsules encapsulating active ingredients, such as fragrances, embedded in a polyethylene glycol polymer matrix, along with an adhesion agent like beeswax, which protects the microcapsules during product preparation and ensures targeted release.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If microcapsules are made with thicker capsule walls to improve stability, then capsule stability is improved, but active ingredient release performance deteriorates
Solution Approach 1:
The capsule wall is divided into multiple layers with different functions: an inner layer for stability and an outer layer for controlled release. This segmentation allows each layer to optimize its specific function without compromising the other.
Solution Approach 2:
The capsule wall is constructed from composite materials with different properties - the inner layer uses materials providing chemical stability while the outer layer uses materials enabling controlled release. This composite structure resolves the contradiction between stability and release performance.
2Ease of manufacture
If microcapsules are mixed with detergent components to incorporate them into powdered formulations, then incorporation efficiency is improved, but microcapsule integrity deteriorates due to breakage
Solution Approach 1:
A protective coating is applied to the microcapsules before mixing with detergent components. This coating acts as a cushion during the mixing process, preventing mechanical breakage while allowing efficient incorporation into the powdered formulation.
3Productivity
If volatile fragrance components are released immediately to provide olfactory impression, then fragrance delivery is improved, but product stability deteriorates due to premature volatilization
Solution Approach 1:
The capsule wall is designed to release fragrance components periodically rather than continuously - remaining intact during storage to maintain stability, then releasing fragrance in controlled periods during use. This periodic release mechanism resolves the contradiction between immediate delivery and long-term 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
The composition allows for efficient incorporation and targeted release of active ingredients in solid consumer products, enhancing fragrance retention and product stability while withstanding mechanical, chemical, and thermal stresses.
Implementation Method 1
a polymer matrix embedding said at least one microcapsule
Implementation Method 2
at least one adhesion agent in said matrix
Implementation Method 3
the desired olfactory impression can be guaranteed based on a targeted release of the active component
Implementation Method 4
the fragrances or other active ingredients can be added to the formulation in encapsulated form
Data Source
AI summary
The present invention relates to the field of perfumed particles in particular for solid consumer product formulations such as textile care products. More specifically, the present invention relates to a composition comprising or consisting of at least one pastille, wherein said pastille comprises or consists of at least one microcapsule as well as a polymer matrix embedding said at least one microcapsule as well as to a composition additionally comprising or consisting of at least one adhesion agent in said matrix. Moreover, the present invention relates to a process for the preparation of a corresponding composition and its use for the preparation of consumer products as well as consumer products as such comprising or consisting of the composition.