False Eyelash Shaft Layout to Prevent Eyelid Pricking
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Solution Overview
Problem
Existing false eyelashes generate burrs that prick the eyelids and cause discomfort due to thick attachment at the lash roots, leading to an uncomfortable wearing experience.
Innovation Solution
The false eyelashes are designed with shaft parts extending in a curved or linear shape, intersecting with eyelash main body parts to form a continuous plane, ensuring the end surfaces of both are coplanar, and featuring rounded corners to prevent pricking and reduce thickness for enhanced comfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If shaft parts with circular cross-sectional shape are used and eyelash main body parts are arranged in extending direction, then false eyelashes can be formed by cutting connection, but burrs are generated at end portions that may prick eyelids causing discomfort
Solution Approach 1:
The shaft parts are designed with a flat cross-sectional shape instead of circular, and the end surfaces are made coplanar with the eyelash main body parts. This geometric change eliminates the protruding burrs that cause pricking discomfort, while the flat shape allows for easier manufacturing through cutting processes.
2Ease of manufacture
If eyelash main body parts are affixed to shaft parts in three-dimensional and crossed manner, then false eyelashes can be formed, but thickness at attachment part becomes thicker causing contact with eyelash roots and discomfort
Solution Approach 1:
The invention transitions from a three-dimensional crossed arrangement to a two-dimensional planar arrangement where the shaft parts and eyelash main body parts intersect in the same plane. This dimensional reduction decreases the thickness at the attachment area, preventing contact with eyelash roots and eliminating discomfort, while maintaining manufacturing simplicity.
Data Source
AI summary
The present disclosure provides false eyelashes with comfortable wearing better than existing ones. The false eyelashes are provided with shaft parts and a plurality of eyelash main body parts, where the shaft parts extend in a curved or linear shape in a first direction, base end portions of the eyelash main body parts are connected to the shaft parts and extend from the shaft parts in a direction intersecting with the first direction, and end surfaces of the shaft parts in the first direction and end surfaces of the eyelash main body parts in the first direction form a continuous plane.