Asymmetrical Eyelash Applicator Teeth for Product Retention
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Solution Overview
Problem
Existing eyelash and eyebrow applicators fail to effectively load and separate eyelashes for optimal makeup application, particularly in bundling eyelashes or eyebrows already coated with product, leading to clumping and uneven distribution.
Innovation Solution
A brush applicator with flattened, asymmetrical teeth arranged in staggered rows and having a convex edge, providing increased contact surface for product retention and separation, allowing for precise loading and grouping of eyelashes into distinct bundles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional applicator teeth are used, then the structure is simple, but the product retention and eyelash separation are insufficient
Solution Approach 1:
The teeth are designed with an asymmetrical cross-section featuring a flattened side and a convex edge, rather than a symmetrical cylindrical shape. This asymmetry creates different surface characteristics on each side of the tooth, enabling one side to retain product while the other side facilitates eyelash separation and bundling during application.
Solution Approach 2:
The applicator teeth are segmented into multiple functional zones along their length, with the flattened side providing product retention and the convex edge providing separation capability. This segmentation of functional zones within each tooth structure allows simultaneous product holding and precise eyelash manipulation.
2Area of stationary object
If teeth are arranged in dense rows, then the contact surface is large, but the eyelash bundling capability is reduced
Solution Approach 1:
The teeth are arranged in staggered rows where adjacent teeth are offset from each other, creating localized gaps and varied contact points. This staggered arrangement provides different local qualities across the contact surface, allowing some areas to provide broad product distribution while other areas create the spacing needed for effective eyelash bundling.
3Manufacturing precision
If the applicator applies product evenly, then the distribution is uniform, but the volumized effect is reduced
Solution Approach 1:
The asymmetrical tooth design with flattened side and convex edge creates non-uniform product distribution patterns. The flattened side holds and releases product in controlled amounts, while the convex edge creates spacing that allows product to accumulate in specific areas, producing a volumized effect rather than perfectly uniform distribution.
Data Source
Figure 1
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Figure 4~8
AI summary
The invention concerns an applicator for applying a product to the eyelashes and/or eyebrows, comprising a moulded application member (8), comprising: a core (10) with a longitudinal axis (X), a plurality of longitudinal rows (50) of teeth with a flattened cross-section, distributed about the core (10) and each extending along the longitudinal axis (X) of the core (10), each of the rows (50) comprising consecutive teeth staggered along the core (10) and partially superposed at their base (25) in elevation, the teeth in elevation having a dissymmetrical shape with a convex edge (22).