Eyelash Applicator with Convergent Channels for Grouping and Loading
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Solution Overview
Problem
Existing cosmetic applicators for eyelashes do not effectively create sculpted eyelashes, failing to optimize both grouping and loading of lashes during mascara application.
Innovation Solution
The applicator features a core with molded plates forming convergent channels, including half-discs and quarter-discs, allowing eyelashes to converge and then release during rotation, enabling simultaneous grouping and loading, with specific plate orientations and protrusions for efficient lash management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the applicator uses traditional protrusions or single-zone comb elements, then the structure is simple, but it cannot simultaneously group and comb eyelashes effectively
Solution Approach 1:
The applicator comb is divided into multiple functional zones: a first zone with protrusions for grouping eyelashes, and a second zone with different shaped elements for combing and separating lashes. This segmentation allows each zone to perform its specific function optimally without interfering with the other, thereby achieving both grouping and combing effects simultaneously.
Solution Approach 2:
Different regions of the applicator are given different local qualities - the first zone has protrusions suited for gathering lashes, while the second zone has flattened or curved elements suited for combing. This local differentiation enables the applicator to perform multiple functions along its length, resolving the contradiction between simplicity and multi-functionality.
2Quantity of substance
If the wiper has a small internal diameter to limit product on protrusions, then product loading is controlled, but zones with smaller radial extension cannot effectively load the applicator
Solution Approach 1:
The wiper is designed with a segmented structure featuring an axial discontinuity that creates a first portion and a second portion. The first portion corresponds to zones with smaller radial extension and has a first internal diameter, while the second portion corresponds to zones with larger radial extension and has a second internal diameter. This segmentation allows each portion to optimize product transfer for its corresponding zone.
Solution Approach 2:
The wiper's internal diameter parameter is changed along its axial length - the first portion has a smaller internal diameter to control product on zones with smaller radial extension, while the second portion has a larger internal diameter to facilitate loading of zones with larger radial extension. This parameter variation resolves the contradiction between product control and loading efficiency.
3Ease of manufacture
If the applicator elements are simple protrusions, then manufacturing is easy, but sculpted eyelash effect is not achieved
Solution Approach 1:
The applicator elements are segmented into different types: simple protrusions in the first zone for grouping, and more complex flattened or curved elements in the second zone for sculpting. This segmentation allows manufacturing to proceed in stages, with simpler elements first, while still achieving the desired sculpting effect through the combination of different element types.
Solution Approach 2:
The applicator uses a composite structure combining different element geometries (protrusions, flattened sections, curved sections) in a single integrated comb. This composite approach achieves the sculpting effect through geometric diversity rather than requiring complex materials or multi-step manufacturing processes.
Data Source
Figure 1~2
Figure 3~4
AI summary
The invention relates to a cosmetic product applicator (10) comprising a core (12) having a first end, referred to as the proximal end (13), and a second free end, referred to as the distal end (16), and a plurality of trays (40) in which the trays (40) are molded with the core (12), the trays (40) being able to form, on the same angular portion of the core (12), converging channels (42) configured so as to present at least two successive zones of convergence, in the same direction of rotation around the core (12). The invention also relates to an associated applicator assembly.