Double Capsule Charcoal Encapsulation for Bright Color Stability
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Solution Overview
Problem
Conventional charcoal-containing cosmetics and toothpaste formulations appear unsanitary due to their black color, which decreases consumer appeal and commercial value, and charcoal's adsorption properties are not effectively utilized, while also being prone to deterioration from moisture and oxygen.
Innovation Solution
A charcoal-containing double capsule is developed, where charcoal powder is doubly encapsulated within a primary and secondary binder system, allowing the product to maintain a bright color until the capsule is broken, thereby protecting the charcoal from degradation and enhancing its adsorption performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If charcoal powder is simply mixed in toothpaste and cosmetics, then the product color becomes black, but this creates a visually unsanitary image that decreases consumer appeal and commercial value
Solution Approach 1:
The charcoal powder is segmented into individual particles, each encapsulated within its own primary capsule shell. This segmentation allows each charcoal particle to be independently enclosed, preventing the collective black appearance while maintaining the functional benefits of charcoal.
Solution Approach 2:
The invention uses a nested capsule structure where charcoal powder is enclosed within primary capsules, which are then embedded within secondary capsules. This nested arrangement hides the black charcoal powder inside multiple protective layers, maintaining bright product appearance while preserving charcoal's functionality.
2Reliability
If charcoal powder is used to strengthen adsorptive power, then cleaning effectiveness is improved, but the black coloring becomes a factor inhibiting improvement of skin care effect perception
Solution Approach 1:
The harmful black coloring effect is extracted and separated from the functional adsorptive properties of charcoal. The charcoal particles are enclosed within transparent or translucent capsule shells, allowing the adsorptive function to be maintained while the harmful visual effect is removed.
Solution Approach 2:
The capsule shells act as intermediaries between the charcoal powder and the external environment. These shells protect the charcoal particles while allowing their adsorptive properties to function, and simultaneously prevent the black coloring from directly affecting the product appearance and consumer perception.
3Reliability
If charcoal powder is directly applied, then adsorption properties are utilized, but the charcoal is prone to deterioration from moisture and oxygen
Solution Approach 1:
The charcoal particles are provided beforehand with protective capsule shells that cushion them against deterioration from moisture and oxygen. This prior protection ensures the charcoal maintains its stability and adsorption performance throughout the product shelf life.
Solution Approach 2:
The capsule shells serve as flexible protective barriers that enclose the charcoal particles, preventing direct contact with moisture and oxygen in the environment. This encapsulation maintains charcoal stability while preserving its adsorption properties.
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 double encapsulation maintains a bright product color, stabilizes activated charcoal, and ensures effective adsorption performance, overcoming the unsanitary appearance and degradation issues of conventional charcoal-containing products.
Implementation Method 1
a primary capsule in which charcoal powder is bound to a first binder, wherein in the double capsule, the primary capsule and a coloring agent are bound to a second binder
Data Source
AI summary
The present invention includes: 1) dissolving a first binder in a first solvent; 2) dissolving a dispersing agent in a solution in which the first binder is dissolved; 3) adding charcoal powder to the solution obtained in 2) and performing homogenous mixing to produce a dispersion in which the charcoal powder is bound to the first binder; 4) spray drying the dispersion obtained in 3) to produce a primary capsule from which the first solvent is removed; 5) dissolving a second binder and a softening agent in a second solvent; 6) homogeneously mixing a coloring agent and the dispersing agent with a solution in which the second binder and the softening agent are dissolved; 7) mixing the primary capsule with the solution obtained in 6) to produce a double capsule dispersion in which the primary capsule is bound to the second binder; and 8) spray-drying the double capsule dispersion to product a double capsule from which the second solvent is removed.