PHA Scrub Particle Composition for Microplastic-Free Skin Cleansing

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Solution Overview

Problem

Existing cleansing products using petroleum-based synthetic resin particles create microplastics, causing environmental harm and skin irritation, while natural alternatives are costly and rough, leading to skin damage.

Innovation Solution

Biodegradable scrub particles composed of polyhydroxyalkanoate (PHA) with controlled particle sizes and surface smoothness, combined with a skin cleansing composition, provide effective skin cleansing with minimal irritation and environmental friendliness.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If petroleum-based synthetic resin particles are used for skin cleansing, then skin cleansing power is improved, but environmental harm increases due to microplastic formation

Engineering Contradiction:

Improveskin cleansing powerVSAvoidmicroplastic formation

Core Design Contradiction:

ProductivityVSObject-generated harmful factors

Solution Approach 1:

The patent changes the material composition parameter from petroleum-based synthetic resins to biodegradable polymers (PHA, PBAT, PBS, PLA) while maintaining particle size parameters (10-1000 μm) to ensure effective skin cleansing performance without generating persistent microplastics

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent employs biodegradable polymer particles that are designed to break down naturally after use, replacing persistent synthetic resins. These particles perform their cleansing function and then decompose, eliminating long-term environmental accumulation of microplastics

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

2Object-generated harmful factors

If natural raw material particles are used for skin cleansing, then environmental friendliness is improved, but production cost increases

Engineering Contradiction:

Improveenvironmental friendlinessVSAvoidproduction cost

Core Design Contradiction:

Object-generated harmful factorsVSEase of manufacture

Solution Approach 1:

The patent creates composite particle systems using blends of biodegradable polymers (PHA, PBAT, PBS, PLA) that combine the environmental benefits of natural materials with controlled manufacturing processes, achieving a balance between eco-friendliness and production cost-effectiveness

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The patent develops a universal biodegradable particle system that can replace multiple different natural raw materials (such as walnut shells, apricot kernels) with a single class of biodegradable polymers that offer consistent performance and easier standardization in production

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Object-generated harmful factors

If natural raw material particles are used for skin cleansing, then environmental friendliness is improved, but skin damage increases due to rough surface

Engineering Contradiction:

Improveenvironmental friendlinessVSAvoidskin damage

Core Design Contradiction:

Object-generated harmful factorsVSObject-affected harmful factors

Solution Approach 1:

The patent changes the surface parameter of the particles by using biodegradable polymers that can be processed into smooth surfaces, unlike rough natural materials. The particle surface smoothness is controlled while maintaining biodegradability, reducing skin irritation during cleansing

Inventive Principle:

Principle #35Parameter changes

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 PHA-based scrub particles offer excellent skin cleansing power, reduce skin irritation, and ensure biodegradability, contributing to environmental sustainability without generating microplastics.

Implementation Method 1

the biodegradable scrub particles according to the present disclosure are excellent in biodegradability, so that they can be environmentally friendly without causing microplastic problems

Methodology Applied

Scientific EffectBiodegradation: Decomposition (biological)

Data Source

PatentEP4714429A1Biodegradable scrub particles and skin cleansing composition comprising same

Publication Date: 2026.03.25 CJ CHEILJEDANG CORP

AI summary

The present invention relates to biodegradable scrub particles and a skin cleansing composition comprising same, wherein the biodegradable scrub particles comprise polyhydroxyalkanoate (PHA).