Thermoplastic Elastomer Cosmetic Applicator Head with Flocked Layer
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Solution Overview
Problem
Existing cosmetic brushes with cotton heads suffer from non-uniform application, affecting the makeup effect.
Innovation Solution
A cosmetic applicator head made of thermoplastic elastomer with a columnar application portion and a flocked layer of specific fineness and length, providing uniform material application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a cotton head is used for cosmetic application, then the applicator can hold cosmetic material, but the application is non-uniform affecting makeup effect
Solution Approach 1:
The patent changes the physical parameters of the applicator head by specifying precise flock fiber characteristics (fineness of 2.4D to 3.6D and length of 1.2mm to 1.8mm) and the columnar structure with specific dimensions (diameter 2mm to 5mm, length 5mm to 15mm). These parameter specifications ensure uniform cosmetic material distribution while maintaining adequate holding capacity.
Solution Approach 2:
The patent uses a composite structure combining a columnar applicator head body made of appropriate material with a flocked layer of specifically graded fibers. This composite design integrates the structural support function with the uniform cosmetic application function, resolving the contradiction between material holding and application uniformity.
2Ease of manufacture
If the flock fineness and length are not controlled, then manufacturing is simpler, but the makeup effect is inferior
Solution Approach 1:
The patent establishes specific parameter ranges for flock fibers (fineness 2.4D to 3.6D, length 1.2mm to 1.8mm) that balance manufacturing feasibility with application quality. These controlled parameters ensure uniform cosmetic delivery while remaining practical for production processes.
Solution Approach 2:
The patent applies local quality control by specifying particular properties for the flock layer that directly contacts the cosmetic material and skin. The columnar structure with controlled diameter (2mm to 5mm) and length (5mm to 15mm) ensures that the critical application surface has optimized characteristics for uniformity, while other parts of the applicator can have different properties for structural support.
3Device complexity
If the applicator head structure is not optimized, then design is simpler, but the material carrying capacity is insufficient
Solution Approach 1:
The patent optimizes the columnar applicator head dimensions (diameter 2mm to 5mm, length 5mm to 15mm) to achieve optimal balance between structural simplicity and cosmetic material carrying capacity. The flocked layer with controlled fiber properties enhances material holding within this simple columnar geometry.
Solution Approach 2:
The flocked layer on the columnar applicator head creates a porous structure that increases cosmetic material holding capacity without significantly increasing overall device complexity. The interstices between flock fibers provide additional material retention while maintaining the simple columnar form factor.
Data Source
AI summary
A cosmetic applicator head is provided. The cosmetic applicator head includes a mounting portion and an application portion that are fixedly connected, where the application portion is a columnar structure; a flocked layer is provided on a surface of the application portion; a flock in the flocked layer has a fineness of 2.4 D to 3.6 D, and a length of 1.2 mm to 1.8 mm; and the applicator head is an integrally injection-molded piece made of a thermoplastic elastomer. The applicator head is made of the thermoplastic elastomer, and the application portion is the columnar structure.