Spiral Mascara Applicator With Downward Microcombs for Lash Separation

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Solution Overview

Problem

Traditional mascara applicators often cause unwanted pulling and movement of lashes due to their bristle configurations, failing to enhance mascara deposition and lash lengthening effectively.

Innovation Solution

A spiral cosmetic applicator with downward-facing microcombs/branches on bristles, arranged in a helical pattern, allowing lashes to enter easily and maximizing surface contact for improved mascara deposition and lash separation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If traditional bristle configurations are used on mascara applicators, then the applicator structure is simple, but the lashes experience unwanted pulling and movement, reducing application quality

Engineering Contradiction:

Improvelash application qualityVSAvoidbristle configuration complexity

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

Each bristle is segmented into multiple branches (typically 3-5 branches per bristle) that are angled downward at specific angles (30-60 degrees). This segmentation allows the bristle to interact with lashes in a controlled manner, reducing pulling while maintaining application quality. The branches create multiple contact points that guide lashes through the applicator smoothly.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The bristles are configured with specific local properties including downward-angled branches, optimized diameters (0.2-0.8 mm), and controlled flexibility. These local quality variations enable different regions of the applicator to perform specialized functions: some areas provide gentle guidance while others deposit mascara more heavily, improving overall application quality without requiring complex overall structure.

Inventive Principle:

Principle #3Local quality

2Quantity of substance

If bristles are arranged in traditional patterns, then the applicator design is simple, but mascara deposition and lash lengthening are not effectively enhanced

Engineering Contradiction:

Improvemascara depositionVSAvoidbristle arrangement complexity

Core Design Contradiction:

Quantity of substanceVSDevice complexity

Solution Approach 1:

The bristles are arranged in a three-dimensional helical or spiral pattern around the applicator core, rather than in traditional flat or radial arrangements. This dimensional change increases the surface area contact with lashes and allows mascara to be deposited along the entire length of each lash. The helical arrangement creates overlapping bristle paths that ensure thorough coating and enhance lash lengthening effects.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The applicator employs curved and spiral bristle arrangements that follow the natural curvature of lashes. The helical pattern wraps around the core in a cylindrical spiral, creating a three-dimensional coating pattern that maximizes mascara deposition. This curved arrangement allows the bristles to conform to and coat lashes more effectively than straight-line arrangements.

Inventive Principle:

Principle #14Spheroidality (Curvature)

3Object-affected harmful factors

If conventional bristle arrangements are used, then manufacturing is straightforward, but the applicator causes tangling and pulling of lashes

Engineering Contradiction:

Improvelash tangling and pullingVSAvoidbristle configuration fabrication

Core Design Contradiction:

Object-affected harmful factorsVSEase of manufacture

Solution Approach 1:

The bristles feature asymmetric branch configurations with downward angles (30-60 degrees) that are not uniform in all directions. This asymmetry is designed to match the natural growth direction of lashes, allowing the bristles to guide lashes downward through the applicator without causing lateral pulling or tangling. The asymmetric design requires precise manufacturing but can be achieved through modern molding techniques.

Inventive Principle:

Principle #4Asymmetry

Solution Approach 2:

Instead of having bristles point upward or horizontally as in traditional applicators, this invention inverts the bristle orientation to point downward at specific angles. This inversion allows lashes to pass through the bristles in a natural downward motion, eliminating the pulling and tangling caused by conventional upward-pointing bristles. The inverted configuration requires reverse-thinking in the manufacturing process but simplifies the interaction with lashes.

Inventive Principle:

Principle #13The other way round (Inversion)

Data Source

PatentUS12569056B2Spiral cosmetic applicator with downward facing microcombs

Publication Date: 2026.03.10 LOREAL SA

AI summary

An applicator for applying a cosmetic product to the eyelashes and/or eyebrows. The applicator includes a core extending along a longitudinal axis X, and one or more elongated strip having a top planar surface with a plurality of bristles extending therefrom. The one or more elongated strip is wrapped in a helical pattern around the longitudinal axis X of the core. Each of the plurality of bristles have a bristle latitudinal axis Y and one or more branches extending at a downward angle θ from the bristle latitudinal axis Y.