Welded Makeup Brush Ferrule With Recyclable Bristle Well
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Solution Overview
Problem
Current makeup brushes face issues such as bristle loss, contamination, and recyclability due to glue and bacterial contamination, leading to expensive and time-consuming cleaning processes that ultimately result in the degradation and disposal of brushes in landfills.
Innovation Solution
A makeup brush design featuring a ferrule with bristles welded to a well base using infrared, ultrasonic, or laser welding, made from recyclable materials like PBT, with a releasable connection to the handle and a short ferrule-to-brush length ratio, allowing for easy recycling and maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If bristles are glued or tied within the ferrule to hold them in place, then bristle retention is improved, but bristle loss occurs over time due to incomplete gluing or degradation of the bonding material
Solution Approach 1:
The patent replaces the chemical bonding method (glue) with a mechanical interlocking system where bristles are embedded in a recessed well within the ferrule. The bristles are secured through physical containment and friction rather than adhesive bonding, eliminating the degradation issues associated with glue over time.
Solution Approach 2:
The ferrule is divided into distinct functional zones: a recessed well that receives and holds the bristles, and a separate bonding material layer that secures the bristles to the ferrule interior surface. This segmentation allows each component to perform its specific function optimally without compromising the other.
2Ease of manufacture
If metal ferrules are used with hollow structures to accommodate bristles, then bristle attachment is enabled, but the ferrule becomes complex and prone to falling apart due to multiple structural components
Solution Approach 1:
The patent merges the ferrule body and the bristle well into a single integrated component. The well is formed as a recessed portion of the ferrule itself rather than as a separate structure, eliminating the need for additional structural elements to hold the bristles and simplifying the overall ferrule design.
3Ease of manufacture
If glue is used to attach bristles to the ferrule, then bristle attachment is achieved, but the brush becomes non-recyclable due to contamination and degradation of the bonding material
Solution Approach 1:
The patent replaces chemical adhesives with a mechanical well structure that physically contains the bristles. This mechanical system is designed to be removable and recyclable, allowing the ferrule and bristles to be separated and reused without the contamination issues associated with glue-based bonding.
4Object-affected harmful factors
If cleaning products are used to clean brushes, then bacterial contamination is reduced, but the cleaning process breaks down the glue and brush structure, exacerbating bristle loss
Solution Approach 1:
The patent replaces the glue-based bonding system with a mechanical well structure that is resistant to degradation by cleaning products. The mechanical interlocking and friction-based retention of the bristles remains stable even after cleaning, preventing the structural breakdown that occurs with glue-based systems.
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 solution prevents bristle loss, reduces contamination, and facilitates cost-effective production and maintenance, enabling the brushes to be recycled and reused, thus minimizing landfill waste.
Implementation Method 1
welding the bristles to the well base of the ferrule using infrared, ultrasonic, or laser welding
Implementation Method 2
welding the bristles to the well base of the ferrule using infrared, ultrasonic, or laser welding
Implementation Method 3
welding the bristles to the well base of the ferrule using infrared, ultrasonic, or laser welding
Data Source
AI summary
The method for manufacturing a makeup brush includes: molding a ferrule and welding bristles to the ferrule. The ferrule includes a ferrule inner end; a ferrule outer end; a ferrule body; an interior, and a well. The well has a well base parallel to the ferrule outer end. The well base has an inner side and an outer side. The step of welding the bristles includes the steps of disposing the bristles in contact with the outer side of the well base and exposing the inner side of the well base to welding.