Disk Mascara Brush Spacers for Precise Bristle Separation

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Solution Overview

Problem

Existing elastomeric mascara brushes lack the ability to precisely control and adjust the axial distance between bristles, limiting their performance optimization.

Innovation Solution

Incorporating thin plastic spacers between bristle-containing disks in a disk-style mascara brush to adjust the axial distance between bristles, allowing for customizable brush configurations without requiring new tooling.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If traditional elastomeric mascara brushes are used, then manufacturing is simpler, but the axial distance between bristles cannot be precisely controlled

Engineering Contradiction:

Improveaxial distance controlVSAvoidbrush structure

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

The brush is divided into separate bristle-containing disks that can be independently manufactured and then assembled together with spacers. This segmentation allows precise control of the axial distance between bristles by adjusting the spacer thickness, while maintaining manufacturing simplicity through modular assembly.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Spacers are introduced as intermediary components between adjacent bristle-containing disks. These spacers serve as mediators that precisely control the axial distance between bristles, enabling fine-tuned performance optimization without complicating the overall brush structure.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Manufacturing precision

If spacers are inserted between bristle-containing disks, then bristle separation is precisely controlled, but manufacturing steps increase

Engineering Contradiction:

Improvebristle separation controlVSAvoidassembly process

Core Design Contradiction:

Manufacturing precisionVSEase of manufacture

Solution Approach 1:

The spacers are pre-formed with precise thickness dimensions before assembly. By preparing the spacers in advance with the desired thickness, the assembly process becomes straightforward, and the bristle separation control is achieved without adding complex manufacturing steps.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The axial distance between bristles is controlled by changing the thickness parameter of the spacers. This allows precise adjustment of bristle separation by simply varying the spacer thickness, maintaining ease of manufacture while achieving high manufacturing precision.

Inventive Principle:

Principle #35Parameter changes

3Adaptability or versatility

If multiple spacers of different thicknesses are used, then brush performance can be optimized, but device complexity increases

Engineering Contradiction:

Improvebrush configuration optionsVSAvoidspacer variety

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The same spacer design can be used in multiple brush configurations by varying the number and arrangement of spacers. This universality allows a single spacer type to serve multiple functions across different brush variants, maintaining simplicity while enabling performance optimization.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The brush configuration can be dynamically adjusted by changing the number, position, and thickness of spacers inserted between bristle-containing disks. This dynamic adaptability allows optimization of brush performance for different applications without creating permanently complex device structures.

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS20260060410A1Disk-Style Mascara Brush with Spacers Between Disks

Publication Date: 2026.03.05 LOREAL SA

AI summary

This disclosure relates to disk-style mascara brushes having thin plastic sheets and/or molded plastic used as spacers inserted between the bristle-containing disks. The spacers precisely control and adjust the axial distance between each bristle-containing disk and bristles so that the mascara brush is configured for optimal mascara deposit and eyelash separation.