Water-Soluble PVA Particles in Cleaning Cream
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Solution Overview
Problem
Conventional cleaning products using polyethylene (PE) or polypropylene (PP) plastic particles for exfoliation and whitening are environmentally harmful due to non-degradability, leading to contamination of oceans and health risks, and alternatives like natural fibers are costly and difficult to control in size.
Innovation Solution
A cleaning cream containing water-soluble polymer PVA particles, blended with glycerine and a surfactant, which maintains particle form for exfoliation and whitening functions while being eco-friendly and degradable in water, manufactured through a conventional plastic processing method.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If PE or PP plastic particles are used for exfoliation and whitening, then cleaning function is improved, but environmental harm increases due to non-degradability
Solution Approach 1:
The patent changes the material parameter from conventional PE/PP plastics to PVA (polyvinyl alcohol) polymer particles. PVA is inherently water-soluble and biodegradable, transforming the environmental persistence parameter while maintaining the exfoliation cleaning function. This material substitution resolves the contradiction by selecting a polymer with different chemical properties that are environmentally friendly yet effective for skin care.
Solution Approach 2:
The patent converts the potential harm of plastic pollution into benefit by using PVA particles that deliberately dissolve in water. The particles are designed to maintain structural integrity during application for effective exfoliation, then safely dissolve in aqueous environments like sinks and oceans, transforming from a persistent pollutant into a beneficial environmentally-degradable cleaning agent.
2Object-generated harmful factors
If natural fiber particles are used as replacement, then environmental harm is reduced, but cost increases and particle size control becomes difficult
Solution Approach 1:
The patent changes the material parameter from natural fibers to synthetic PVA polymer particles. This substitution maintains environmental compatibility while enabling precise control over particle size, shape, and distribution through conventional plastic processing techniques. The manufactured PVA particles can be produced in consistent sizes (e.g., 10-50 micrometers) with controlled morphology, overcoming the size control difficulties of natural fibers.
Solution Approach 2:
The patent replaces the mechanical harvesting and processing of natural fibers with chemical synthesis and extrusion processes for PVA particles. This substitution enables automated, standardized production with precise particle size control through extrusion parameters, eliminating the manual processing and size variability inherent in natural fiber preparation.
3Object-generated harmful factors
If PVA particles are made water-soluble, then environmental degradability is improved, but particle stability in cream decreases
Solution Approach 1:
The patent applies local quality by creating a gradient or localized protection where PVA particles are coated or embedded in a hydrophobic matrix (oil phase or wax). The particle core remains water-soluble PVA for environmental degradability, while the outer coating provides water resistance for stability in the cream formulation. This localized differentiation allows simultaneous achievement of both water solubility for degradation and water resistance for stability.
Solution Approach 2:
The patent creates composite structures where PVA particles are combined with hydrophobic materials such as oils, waxes, or surfactants. The composite particle structure provides the water-soluble PVA core for environmental degradability while the hydrophobic outer layer prevents premature dissolution in the cream, enabling both stability during storage and degradability in aquatic environments.
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 water-soluble PVA particles provide effective exfoliation and whitening without harming humans or the environment, degrading in water to prevent ocean contamination and offering controlled particle size and cost-effective production.
Implementation Method 1
the water soluble polymer PVA particles of the present invention will be degraded or dissolved by great amount of water
Data Source
Figure 1
AI summary
A cleaning cream containing PVA particles has PVA particles being uniformly dispersed in a cleaning cream. Moisture content of the cleaning cream is at the range of 0.1∼23%. The cleaning cream comprises a least a surfactant. The PVA particles has glycerol and PVA in which molecular weight of the PVA is 110,000∼120,000. The PVA particles remain as particle form in the cleaning cream.