Mascara Applicator Bristle Layout for Product Retention and Even Deposition
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Solution Overview
Problem
Existing mascara applicators fail to efficiently retain and evenly distribute cosmetic compositions on keratin fibers, requiring frequent recharging and lacking adaptability to lash angles.
Innovation Solution
A mascara packaging set with a container, wiper, and applicator featuring a thermoplastic elastomer bristles with varying hardness and spacing, combined with a wax emulsion and polymer composition, allowing for controlled deposition and adhesion on keratin fibers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If traditional mascara applicators are used, then they can apply cosmetic composition to keratin fibers, but they fail to retain sufficient product and require frequent recharging
Solution Approach 1:
The applicator brush is divided into multiple rows of bristles with different spacing patterns. The first pair of adjacent rows are spaced farther apart to define a reservoir for holding cosmetic composition, while the second pair of adjacent rows are spaced closer together for even distribution during application. This segmentation allows the brush to both retain product and apply it evenly.
Solution Approach 2:
Different regions of the brush have different bristle configurations optimized for different functions. The reservoir region (first pair of rows) has wider spacing for product retention, while the application region (second pair of rows) has closer spacing for even distribution. This local differentiation resolves the contradiction between retaining sufficient product and applying it evenly without frequent recharging.
2Manufacturing precision
If uniform bristle spacing is used, then the applicator structure is simple, but it cannot achieve even distribution of cosmetic composition
Solution Approach 1:
The bristles are arranged in distinct rows with different spacing characteristics. The first pair of adjacent rows defines a reservoir with wider spacing, while the second pair creates a distribution zone with closer spacing. This segmented arrangement achieves even distribution of cosmetic composition while maintaining a relatively simple manufacturing process.
3Adaptability or versatility
If rigid bristles are used, then the applicator maintains its shape, but it cannot adapt to different lash angles
Solution Approach 1:
The bristles are made from thermoplastic elastomer with specific hardness parameters (32-38 shore D), providing a balance between rigidity and flexibility. This parameter optimization allows the bristles to maintain sufficient structural integrity while adapting to different lash angles during application.
Solution Approach 2:
The use of thermoplastic elastomer combines the properties of thermoplastics (structural integrity) with elastomers (flexibility). This composite material approach enables the bristles to adapt to different lash angles while maintaining enough rigidity to hold their shape and distribute product evenly.
4Quantity of substance
If thick layer of mascara is applied, then lash thickness is enhanced, but application time increases excessively
Solution Approach 1:
The brush design with spaced rows creating a reservoir allows for controlled deposition of cosmetic composition. The reservoir holds sufficient product to build lash thickness, while the closer-spaced rows ensure rapid, even distribution that reduces application time.
Solution Approach 2:
The reservoir pre-lloads the brush with cosmetic composition in the optimal amount and distribution pattern. This preliminary arrangement of the cosmetic composition allows for quick application without requiring multiple passes or excessive application time, while still achieving sufficient lash thickness.
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 solution provides a mascara applicator that retains sufficient product, adapts to lash angles, and achieves quick, even distribution, enhancing lash thickness and lengthening without excessive application time.
Implementation Method 1
The applicator has an elongate core and bristles extending radially therefrom. At least one of the bristles is formed from a thermoplastic elastomer having a hardness in the range of 32 shore D to 38 shore D.
Implementation Method 2
The first pair of adjacent rows define a reservoir. The bristles from the first pair of rows have a semi-circular cross-sectional area.
Implementation Method 3
The mascara composition includes a wax emulsion, at least one polymer, and fibers. The applicator is configured to extend into the container through the aperture.
Data Source
AI summary
A mascara packaging set includes a container with a wiper having an aperture and a mascara composition stored within the container. The mascara composition includes a wax emulsion, at least one polymer, and fibers and has a viscosity in a range of 10,000 cps to 20,000 cps. The kit also includes an applicator configured to extend into the container through the aperture. The applicator has an elongate core and bristles extending radially therefrom. At least one of the bristles is formed from a thermoplastic elastomer having a hardness in the range of 32 shore D to 38 shore D. The bristles form rows along the core in an axial direction, wherein rows of a first pair of adjacent rows are spaced farther apart from each other in a circumferential direction than a second pair of adjacent rows. The first pair of adjacent rows define a reservoir.