Biodegradable Brush with Interchangeable Bristles
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Solution Overview
Problem
Conventional makeup brushes made from synthetic resin are non-biodegradable, leading to environmental pollution and may cause skin allergies due to the use of excessive adhesives in their construction.
Innovation Solution
The eco-friendly brush is designed with a handle, neck part, and brush fixing ring made from biodegradable polylactic acid resin, allowing for adhesive-free detachable coupling and interchangeable bristle bundles, reducing environmental impact and skin irritation risks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If synthetic resin is used for the handle and components, then the structural strength and durability are improved, but the environmental pollution and non-biodegradability worsen
Solution Approach 1:
The patent changes the material parameter from conventional synthetic resin to biodegradable resin (such as PLA - polylactic acid), transforming the environmental properties while maintaining structural functionality. This parameter change enables the handle and components to degrade naturally after use, resolving the environmental pollution issue while preserving the necessary structural strength during the product's service life.
2Reliability
If adhesive is used for fixing bristles and assembling parts, then the assembly reliability is improved, but the skin allergies and harmful effects worsen
Solution Approach 1:
The patent extracts and eliminates the adhesive substance from the brush construction process. Instead of using adhesive to fix bristles to the head or to assemble handle components, it employs mechanical attachment methods where bristles are inserted into slots or channels formed directly in the biodegradable resin structure, and components are joined through friction-fit or snap-fit mechanisms. This removal of adhesive eliminates the source of skin allergies and harmful chemical exposure while maintaining assembly reliability through proper mechanical design.
Solution Approach 2:
The patent replaces the chemical bonding system (adhesive) with a mechanical bonding system. Bristles are secured through physical insertion into molded slots, and handle components are assembled through mechanical interlocking features such as tapered fits, snap rings, or friction joints. This mechanical substitution eliminates harmful chemicals while achieving reliable assembly through force-based connections.
3Adaptability or versatility
If multiple separate components are used for interchangeable bristle bundles, then the versatility and ease of replacement are improved, but the device complexity worsens
Solution Approach 1:
The patent segments the brush into distinct functional modules: a handle, a head component with bristle insertion slots, and interchangeable bristle bundles. This segmentation allows the bristle bundles to be independently replaced while maintaining a simple, unified handle structure. The head component acts as an interface that connects bristle bundles to the handle through straightforward insertion and retention mechanisms, enabling versatility without requiring complex assembly systems.
Data Source
AI summary
An eco-friendly brush is disclosed. The present disclosure relates to an eco-friendly brush in which the brush may be biodegraded at disposal, thereby preventing environmental pollution, even solving harmful problems caused by the adhesive, and enabling various types of bristle bundles to be interchangeably installed. As an exemplary embodiment, the present disclosure is provided to include: a handle made of biodegradable resin; a neck part made of the biodegradable resin, and having the rear end part thereof to which the front end part of the handle is detachably coupled; a brush fixing ring made of the biodegradable resin, and having the rear end thereof to which the front end part of the neck part is detachably coupled; and a head part inserted into a rear end part of the brush fixing ring and fixed therein, and having a bristle bundle integrally implanted on the front surface thereof.