Mono-Injected Mascara Brush Discs with Angular Offset
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Solution Overview
Problem
Conventional mascara applicators lack versatility in providing lengthening, volumizing, and thinning effects simultaneously, and their designs do not cater well to user preferences for different lash types, necessitating improved manufacturing methods for enhanced functionality and customization.
Innovation Solution
A method for manufacturing a cosmetic applicator brush using mono-injection molding, where discs are assembled with angular offsets independent of a keying element, allowing for a core with stacked support members and radially projecting protrusions that enable varied bristle arrangements for multiple design capabilities and user-defined preferences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional disc brushes are manufactured with keyed systems for angular offset, then the bristle arrangement can be controlled, but the device complexity increases due to disc-specific keying elements
Solution Approach 1:
The patent removes the keying element from the rod and extracts the angular offset functionality to the disc level. Each disc is molded with its own angular offset features directly into the disc body, eliminating the need for a centralized keyed system on the rod while maintaining precise bristle arrangement control.
Solution Approach 2:
The angular offset control is segmented from the rod and distributed to individual discs. Each disc becomes an independent unit with its own angular positioning features molded into the disc body, allowing precise control without requiring a complex centralized keying mechanism.
2Manufacturing precision
If multiple discs are assembled with angular offsets using keyed systems, then the bristle arrangement is controlled, but the manufacturing process becomes more complex and time-consuming
Solution Approach 1:
The patent combines the angular offset control and disc assembly into a single molded unit. The angular offset features are integrated directly into the disc body during the molding process, eliminating separate keying components and assembly steps, thereby improving manufacturing efficiency while maintaining precision.
Solution Approach 2:
The angular offset features are pre-formed during the disc molding process itself, rather than being added through separate keying operations. This preliminary action of incorporating angular positioning directly into the molded disc structure streamlines the manufacturing process and increases productivity.
3Reliability
If conventional brushes are designed for specific functions, then they can provide targeted effects, but they lack versatility for multiple lash effects simultaneously
Solution Approach 1:
The patent designs the disc brush system to be universally applicable for multiple lash effects. By controlling the bristle arrangement through angular offsets of multiple discs, a single brush can be configured to provide lengthening, volumizing, and thinning effects simultaneously, eliminating the need for multiple specialized brushes.
Solution Approach 2:
The brush design allows for dynamic configuration of bristle patterns through the angular arrangement of multiple discs. This enables the same brush structure to adapt and provide different lash effects by varying the angular offsets and bristle distributions across the stacked discs.
Data Source
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AI summary
A method for manufacturing a cosmetic applicator brush, where the cosmetic applicator brush comprises a plurality of discs assembled relative to one another, each disc having a body with a plurality of bristles extending radially therefrom, comprises the step of forming the cosmetic applicator brush by a mono-injection molding, wherein adjacent discs are maintained at an angular relationship with respect to one another independent of a disc specific keying element.