Eyeliner Applicator Holder Design for Tip Stability
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Solution Overview
Problem
Existing eye liners face challenges in maintaining uniform color distribution and applicator stability, leading to subpar makeup quality and frequent cracking of the applicator tip due to continuous use, especially for new users.
Innovation Solution
The eye liner design incorporates a holder with symmetrical, streamline-shaped open-portions to support the applicator part and a sponge-based cosmetic composition transmission system with a thin sheet-shaped application tip and tip guide for enhanced stability and uniform application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If an existing applicator part without holder support is used, then the device complexity is reduced, but the reliability deteriorates due to cracking from continuous use
Solution Approach 1:
The applicator is divided into two functional segments: a holder portion that provides structural support and an application tip portion that contacts the skin. This segmentation allows each part to perform its specific function optimally while preventing the application tip from cracking due to bending forces.
Solution Approach 2:
The holder acts as an intermediary structure between the applicator tip and the external environment. It provides mechanical support and protects the application tip from direct exposure to bending forces, thereby preventing cracking while maintaining the simplicity of the overall device.
2Adaptability or versatility
If liquid eye liner with multiple iron oxides is used, then the adaptability is improved for various colors, but the manufacturing precision deteriorates due to difficulty in maintaining uniform concentration
Solution Approach 1:
The patent adjusts the physical parameters of the liquid liner formulation, specifically the viscosity and surface tension, to ensure uniform distribution of multiple iron oxide pigments. By optimizing these parameters, the product maintains consistent color concentration throughout the liquid liner reservoir.
Solution Approach 2:
The liquid liner uses a composite formulation combining multiple iron oxide pigments (yellow, green, blue, red, brown) with carefully selected carriers and adjuvants. This composite approach ensures uniform dispersion and consistent color output while maintaining the versatility to provide various color options.
3Ease of operation
If the eye liner is placed horizontally, then the ease of operation is improved, but the reliability deteriorates due to fluid detachment from the brush
Solution Approach 1:
The liquid liner reservoir is designed with a curved, bulbous shape that allows horizontal placement while maintaining proper fluid flow. The curved geometry enables the brush to remain in contact with the fluid source even when the device is held horizontally, preventing fluid detachment and ensuring stable application.
4Ease of manufacture
If the applicator tip is exposed without holder support, then the ease of manufacture is improved, but the manufacturing precision deteriorates due to difficulty in controlling application quality
Solution Approach 1:
The applicator is segmented into a holder portion and an application tip portion, allowing independent manufacturing of each component. The application tip can be manufactured with precise dimensional control for consistent skin contact, while the holder portion provides the necessary structural support without complicating the overall manufacturing process.
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
This design enables consistent, high-quality eyeliner application regardless of user skill level, prevents applicator tip cracking, and maintains uniform color distribution, ensuring extended product life and improved user experience.
Implementation Method 1
a sponge (40), inserted into an interior of the casing (50) for an impregnation of a cosmetic composition
Implementation Method 2
the application tip (20), being in surface contact with at least a part of one end of the cosmetic material transmitting portion (30) for absorbing the cosmetic composition transmitted to the cosmetic material transmitting portion (30)
Data Source
AI summary
An eye liner has a liquid solution accommodating portion which accommodates an eye liner fluid; an applicator part which is provided so as to be in communication with the liquid solution accommodating portion and is for the impregnation of the eye liner fluid accommodated in the liquid solution accommodating portion; and a holder which is provided on the outer surface of the applicator part, the eye liner being characterized in that the holder is provided with a plurality of holder open-portions.