Concave Flocked Nib Assembly for Precise Lip Material Application

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Solution Overview

Problem

Cosmetic brushes with flocked heads often fail to fit snugly against the lip, leading to poor makeup application and efficiency.

Innovation Solution

An application assembly with a concave structure and a flocking layer on its surface, integrated with a discharge channel and hole, allowing materials to permeate directly to the flocking layer for improved fit and application.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If a flat flocked head is used for lip makeup, then the brush structure is simple, but the flocking layer cannot fit against the lip and causes poor makeup effect

Engineering Contradiction:
Improvemakeup application precisionVSAvoidapplication member structure
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The application member incorporates a concave surface with curved geometry that matches the contour of the user's lip. This curved surface allows the flocking layer to conform to the lip's shape, improving makeup application precision while the concave design itself remains relatively simple to manufacture through injection molding.

Inventive Principle:
Principle #14Spheroidality (Curvature)

2Productivity

If material is dispensed through a discharge channel to the flocking layer, then makeup efficiency is improved, but the device structure becomes more complex

Engineering Contradiction:
Improvemakeup application efficiencyVSAvoiddischarge system structure
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The discharge channel is integrated directly into the mounting member, merging the material dispensing function with the structural support function. The discharge hole in the application member aligns with the discharge channel, creating a streamlined path for material delivery to the flocking layer without requiring separate complex dispensing mechanisms.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The mounting member serves multiple functions: it provides structural support for the application member, contains the discharge channel for material delivery, and interfaces with the reservoir. This multi-functionality improves makeup application efficiency by ensuring reliable material delivery while avoiding the need for additional separate components.

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Manufacturing precision

If the flocking layer is provided on a concave surface, then the fit against the applying region is improved, but the manufacturing process becomes more complex

Engineering Contradiction:
Improvefit against applying regionVSAvoidmolding process
Core Design Contradiction:
Manufacturing precisionVSEase of manufacture

Solution Approach 1:

The concave surface is designed with a gentle curvature that matches the natural contour of the lip. This curved geometry improves the fit of the flocking layer against the applying region while remaining feasible for injection molding, as the curvature is not extreme and can be formed using standard mold cavities.

Inventive Principle:
Principle #14Spheroidality (Curvature)

Solution Approach 2:

The application member is formed using bicolor injection molding, combining two different materials (TPE and PP) in a single manufacturing process. This allows the concave surface to be created with the appropriate material properties for both structural integrity and flexibility, improving fit while maintaining manufacturing efficiency through an integrated molding process.

Inventive Principle:
Principle #40Composite materials

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The concave design enhances the fit of the flocking layer against the applying region, improving makeup and skincare application efficiency and effectiveness.

Implementation Method 1

a discharge hole is formed in the application member; a discharge channel is formed in the mounting member; and the discharge channel, the discharge hole, and the flocking layer communicate with each other

Methodology Applied
Scientific EffectPermeation: Permeation

Data Source

PatentUS20260108048A1Application assembly and nib assembly including same, and material dispenser
Publication Date: 2026.04.23 SHYA HSIN PACKAGING INDUSTRY (CHINA) CO LTD
  • US20260108048A1 patent drawing
  • US20260108048A1 patent drawing
  • US20260108048A1 patent drawing

AI summary

An application assembly and a nib assembly including the application assembly, and a material dispenser are provided. The application assembly includes an application member and a mounting member, where the application member includes a first end fixedly connected to the mounting member, and a second end provided with a concave; the concave is recessed toward the first end of the application member; a flocking layer is provided on the concave; a discharge hole is formed in the application member; a discharge channel is formed in the mounting member; and the discharge channel, the discharge hole, and the flocking layer communicate with each other. By providing the concave on the application assembly, and providing the flocking layer on the surface of the concave, the provided makes the cambered flocking layer better fit against the lip, thereby improving the makeup effect.