Concave Profile Makeup Brush for Eyelash Coverage
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Solution Overview
Problem
Traditional mascara brushes do not match the profile of human eyelashes, making it difficult to achieve complete coverage and separate lashes effectively.
Innovation Solution
A makeup brush with a concave profile featuring multiple tuft groups of varying lengths and tapered bristles, designed to match the eyelash profile, allowing for efficient application and separation of lashes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a traditional cylindrical mascara brush is used, then the brush structure is simple and easy to manufacture, but the brush cannot match the eyelash profile, resulting in incomplete coverage and difficulty in separating lashes
Solution Approach 1:
The brush is divided into multiple tuft groups (first pair, second pair, third pair) with different lengths and configurations. Each tuft group targets specific regions of the eyelashes, with longer outer tufts reaching outer lashes and shorter inner tufts accessing inner lashes, thereby matching the natural curvature of the eyelash profile without requiring a complex overall brush structure
Solution Approach 2:
Different portions of the brush have different bristle lengths and orientations tailored to specific eyelash regions. The outer tuft groups have longer bristles for outer lashes, while inner tuft groups have shorter bristles for inner lashes. This local differentiation allows each part of the brush to optimize its function for the specific eyelash profile region it contacts
2Productivity
If a traditional mascara brush with uniform bristle length is used, then the brush structure is simple, but it requires multiple strokes to achieve complete coverage and makes lash separation difficult
Solution Approach 1:
The segmented tuft groups with varying lengths allow different parts of the brush to simultaneously contact and coat different regions of the eyelashes in a single stroke. The gaps between tuft groups enable individual lashes to be accessed and separated, while the longer outer tufts provide leverage for easy manipulation and lash separation
Solution Approach 2:
The concave profile of the brush, formed by the arrangement of tuft groups with different lengths, matches the natural convex curvature of the eyelash line. This curved configuration allows the brush to conform to the eyelid contour, enabling complete coverage in one stroke and facilitating smooth separation of lashes along their natural arc
3Manufacturing precision
If a brush with varying tuft lengths is used, then complete coverage and lash separation are achieved, but the manufacturing process becomes more complex
Solution Approach 1:
The brush is constructed by assembling pre-formed tuft groups, each containing bristles of specific lengths, into the ferrule. This modular approach allows manufacturers to create the complex concave profile by combining simpler components, reducing the overall manufacturing complexity compared to creating a single-piece brush with varying bristle lengths
Solution Approach 2:
Each tuft group is manufactured with specific local characteristics (bristle length, density, orientation) appropriate for its position on the brush. This localized manufacturing approach allows standardization of individual tuft components, making the assembly process more efficient while achieving the precise profile matching required for effective mascara application
Data Source
AI summary
In one aspect, the present disclosure provides a makeup brush. The makeup brush may include a brush portion secured to a forward end of a ferrule. The brush portion may include a plurality of tuft groups, where each tuft group is formed by a plurality of bristles. The tuft groups may form a concave profile at a working end of the makeup brush, and the concave profile may be configured to match a profile of human eyelashes.