Microfluidic Cosmetic Emulsifier for On-Demand Stable Dispensing
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Solution Overview
Problem
Existing cosmetic manufacturing methods require the formation of large volumes of emulsion substances in advance, which is time-consuming and imposes storage and transportation restrictions, and do not cater to consumer preferences for minimal use of chemicals.
Innovation Solution
An apparatus using a microfluidic channel for instant emulsification of cosmetic compositions, allowing users to form and dispense emulsion substances like O/W or W/O particles on demand by utilizing fluid behavioral properties and negative pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If emulsion substance is formed in advance using conventional mixing methods, then long-term storage stability is achieved, but manufacturing time is extended and storage/transportation restrictions are imposed
Solution Approach 1:
The patent stores the external phase fluid and dispersed phase fluid separately in advance within the apparatus, preparing them for immediate emulsification when needed. This preliminary preparation of individual phases eliminates the need for time-consuming conventional mixing while maintaining the ability to form stable emulsions on-demand.
Solution Approach 2:
The patent replaces conventional mechanical mixing systems (homogenizers, microfluidizers) with a microfluidic channel system that utilizes controlled fluid flow and pressure differentials to achieve instant emulsification. This substitution eliminates lengthy manufacturing processes while producing stable emulsions.
2Quantity of substance
If large volume of emulsion substance is manufactured in advance, then user needs are met, but storage and transportation restrictions are imposed
Solution Approach 1:
The patent segments the emulsion system into separate stored phases (external phase fluid and dispersed phase fluid) that are mixed on-demand within the apparatus. This segmentation allows the device to provide large volumes of emulsion without requiring storage of large volumes of pre-formed emulsion, eliminating associated storage and transportation restrictions.
Solution Approach 2:
The apparatus enables users to generate the required volume of emulsion substance on-demand by operating the pump system. The device self-serves by combining stored phases in the microfluidic channel, eliminating the need for external storage infrastructure and complex transportation arrangements for large volumes of pre-formed emulsion.
3Stability of the object's composition
If conventional mixing methods are used, then emulsion is formed, but surfactants and thickeners must be added to prevent separation
Solution Approach 1:
The patent replaces chemical stabilization methods (surfactants and thickeners) with a physical approach using microfluidic channel geometry and controlled fluid flow. The microfluidic structure creates uniform shear forces and flow patterns that produce stable emulsion droplets without requiring additional chemicals, thereby minimizing harmful chemical factors.
Solution Approach 2:
The patent changes the physical parameters of the emulsification process by using precise pressure differential control and microfluidic channel dimensions to achieve uniform droplet formation. This parameter-based approach creates inherently stable emulsions through controlled fluid dynamics rather than chemical stabilization.
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
Enables on-demand formation and dispensing of emulsion substances, reducing storage and transportation restrictions and minimizing the use of surfactants and thickeners, while maintaining emulsion stability.
Implementation Method 1
using properties of fluidic behaviors that fluids flow through a microfluidic channel
Implementation Method 2
allowing users to form and dispense emulsion substances like O/W or W/O particles on demand by utilizing fluid behavioral properties and negative pressure
Data Source
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AI summary
An apparatus for preparing a cosmetic composition containing an emulsion substance formed by instant emulsification through a microfluidic channel is provided. The apparatus includes a housing defining the appearance of the apparatus and installed with a pump on one side, the pump being operated by a user; an external-phase chamber provided in the housing, and storing an external-phase fluid forming the external phase of the emulsion substance; a dispersed-phase chamber provided in the housing, and storing a dispersed-phase fluid forming the dispersed phase of the emulsion substance. The apparatus further includes a microfluidic channel providing a path for the external-phase fluid and the dispersed-phase fluid to flow for forming the emulsion substance by combining the external-phase fluid with the dispersed-phase fluid; and a tube for discharging the emulsion substance from the microfluidic channel.