Vibrating Mascara Applicator Rheology Control
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Solution Overview
Problem
Mascara compositions face challenges in achieving fullness and separation while minimizing clumping due to their rheological properties, which are not effectively addressed by existing applicators, particularly with vibrating applicators that fail to provide sustained viscosity alteration and compatibility with various mascara types.
Innovation Solution
The development of mascara compositions that predictably alter viscosity in response to a vibrating applicator, allowing for increased structure during application while minimizing viscosity increase, and addressing issues with spheroidal particles' adhesion using a combination of gelling agents and platy materials, enabling improved fullness, separation, and reduced clumping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a conventional applicator is used to apply mascara, then the application process is simple, but the mascara does not achieve improved fullness and separation with reduced clumping
Solution Approach 1:
The patent applies mechanical vibration through a vibrating applicator to alter the rheological properties of mascara during application. The vibration frequency is specifically controlled to optimize the mascara's flow characteristics, enabling improved fullness and separation while reducing clumping. This resolves the contradiction by using vibration to enhance application precision without requiring complex manual manipulation techniques.
Solution Approach 2:
The patent changes the rheological parameters of the mascara by applying vibration at specific frequencies. This alters the viscosity and flow properties of the mascara temporarily during application, allowing it to achieve better distribution and separation on lashes. The parameter change resolves the contradiction by enabling precise application control through physical parameter modification rather than operational complexity.
2Manufacturing precision
If the viscosity of mascara is increased to achieve more structure and fullness, then fullness is improved, but the mascara becomes harder to apply and more prone to clumping
Solution Approach 1:
The vibrating applicator temporarily reduces the viscosity of higher-structure mascara during application through vibration-induced rheological changes. This allows the mascara to flow more easily onto lashes despite having increased structure, resolving the contradiction by using vibration to decouple structure from application difficulty.
Solution Approach 2:
The patent introduces dynamic vibration to the application process, making the mascara's rheological properties changeable during application. The vibration frequency and amplitude can be adjusted to optimize the balance between structure and ease of application, resolving the contradiction by making the system dynamic rather than static.
3Manufacturing precision
If a vibrating applicator is used to alter mascara viscosity, then fullness and separation are improved, but the duration of viscosity alteration must be sustained for several seconds or minutes
Solution Approach 1:
The patent uses periodic vibration at specific frequencies to sustain the rheological alteration of mascara over several seconds or minutes. The periodic nature of the vibration maintains the altered viscosity state throughout the application process, resolving the contradiction by using sustained periodic action rather than a single brief impulse.
Solution Approach 2:
The vibrating applicator maintains continuous vibration during the entire application process to sustain the viscosity alteration. This continuous useful action ensures that the mascara remains in the optimal rheological state throughout application, resolving the contradiction by eliminating interruptions in the vibration that would cause the viscosity to revert.
4Manufacturing precision
If spheroidal particles are used in mascara for volume, then fullness is improved, but adhesion to lashes is poor
Solution Approach 1:
The vibration applied during mascara application enhances the adhesion of spheroidal particles to lashes by altering the rheological properties of the carrier medium. The vibration frequency optimizes particle-lash contact and bonding, resolving the contradiction by using mechanical energy to improve adhesion without changing the particle morphology.
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 compositions achieve enhanced fullness and separation with reduced clumping by controlling structure and viscosity, leveraging the persisting rheological effects of a vibrating applicator, and ensuring better adhesion of particles to lashes, resulting in improved application performance.
Implementation Method 1
a vibrating applicator, which imparts a persisting rheological effect on a mascara composition
Implementation Method 2
the structure and behavior of mascara must be understood, not only when the mascara is 'at rest,' but after the mascara has undergone substantial shearing
Data Source
AI summary
Compositions for use with a mascara applicator with vibrating applicator head. The frequency, amplitude and geometry of the vibrating head are sufficient to significantly alter the rheological properties of thixotropic and anti-thixotropic mascara compositions, including an effect that persists after the vibration has stopped. The mascara may be manipulated for improved results, greater flexibility in formulation, benefits in manufacture, as well as other benefits.