False Eyelash Cutting Teeth for Natural Uneven Edges

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Solution Overview

Problem

Existing cutting implements for false eyelashes fail to create a natural, uneven edge by trimming only a subset of fibers, resulting in a less realistic appearance.

Innovation Solution

A cutting apparatus with upper and lower jaws, featuring spaced cutting teeth along an arcuate path, trims a subset of fibers while leaving others intact, creating an uneven edge on false eyelashes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If a continuous cutting edge is used to trim false eyelashes, then the cutting action is simple and efficient, but the resulting edge is uniform and less natural-looking

Engineering Contradiction:

Improveedge uniformityVSAvoidcutting structure complexity

Core Design Contradiction:

Manufacturing precisionVSEase of manufacture

Solution Approach 1:

The cutting edge is segmented into multiple discrete cutting teeth spaced apart from each other along the jaw. This segmentation allows selective trimming of individual fibers while leaving gaps between cuts, creating a natural-looking uneven edge rather than a uniform trimmed appearance.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different portions of the cutting jaw have different properties - the cutting teeth are positioned at specific locations to create varied cutting patterns across the width of the false eyelash. This local variation in cutting action produces different fiber lengths across the lash band, achieving a natural appearance through localized quality differences.

Inventive Principle:

Principle #3Local quality

2Shape

If all fibers are trimmed uniformly, then the false eyelash has a clean defined edge, but it lacks the natural variation seen in real eyelashes

Engineering Contradiction:

Improveedge appearanceVSAvoidcutting consistency

Core Design Contradiction:

ShapeVSManufacturing precision

Solution Approach 1:

Instead of trimming all fibers uniformly, the cutting apparatus performs partial action by trimming only a subset of fibers through the spaced cutting teeth. This partial cutting action creates the desired uneven edge appearance while maintaining control over the cutting process.

Inventive Principle:

Principle #16Partial or excessive action

Solution Approach 2:

The cutting teeth are arranged in an asymmetric pattern along the jaw rather than being uniformly distributed. This asymmetric arrangement creates natural-looking variation in fiber lengths and edge appearance, mimicking the irregular pattern of natural eyelash growth and reduction.

Inventive Principle:

Principle #4Asymmetry

Data Source

PatentUS20260060352A1Cutting apparatus for false eyelashes

Publication Date: 2026.03.05 ROGERSON SHEILA

AI summary

A cutting apparatus for forming an uneven edge on a false eyelash includes an upper jaw and a lower jaw which are movably coupled together. The upper and lower jaws are movable toward each other in a cutting action to trim a false eyelash. The upper jaw comprises a plurality of cutting teeth which are distributed along a bottom edge of the upper jaw between a pair of lateral edges of the upper jaw. The cutting teeth are spaced apart from each other.