Dissolvable PVA Wet Wipe for Sewer Blockage Prevention
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Solution Overview
Problem
Conventional wet wipes, made from non-environmentally friendly materials like Polyester and Polypropylene, take up to 50 years to decompose and contribute to sewage pipe blockages and environmental pollution, necessitating a more sustainable solution.
Innovation Solution
Development of dissolvable wet wipes composed entirely of non-woven or woven Polyvinyl Alcohol (PVA) material, coated with cleaning substances, which disintegrates in water, preventing sewer blockages and minimizing environmental harm.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional wet wipes are made from materials like Polyester and Polypropylene, then the wipes have sufficient strength and durability for cleaning purposes, but they take up to 50 years to decompose and block sewerage systems
Solution Approach 1:
The patent changes the material parameter from conventional non-degradable fabrics (Polyester, Polypropylene) to dissolvable PVA material, fundamentally altering the decomposition parameter while maintaining cleaning functionality
Solution Approach 2:
The invention uses composite construction with PVA base material combined with soluble adhesives and coating materials, creating a multi-layer structure that maintains strength during use but dissolves after disposal
2Reliability
If wet wipes are made from non-environmentally friendly materials, then they provide effective cleaning performance, but they contribute to sewage pipe blockages and environmental pollution
Solution Approach 1:
The patent changes the material composition parameter to use water-soluble PVA and soluble adhesives, transforming the wipe from a persistent pollutant into a biodegradable cleaning tool that eliminates sewage blockage risks
Solution Approach 2:
The invention embraces the disposable nature of wet wipes by using inexpensive, rapidly degradable PVA material that serves its cleaning purpose and then naturally dissolves, eliminating the need for long-term persistence in the environment
3Object-affected harmful factors
If dissolvable PVA material is used to make wet wipes, then the wipes prevent sewer blockages and are environmentally friendly, but the material must maintain sufficient structural integrity during use
Solution Approach 1:
The patent employs composite material structure with PVA base fabric, soluble adhesive layers, and coating materials that work together to provide structural integrity during use while ensuring complete dissolution after disposal
Solution Approach 2:
The patent applies curvature and three-dimensional texturing to the flat PVA sheet, creating a non-planar structure that enhances mechanical strength and durability during handling and cleaning operations
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 dissolvable PVA wet wipes effectively prevent sewer blockages, meet environmental safety standards, and are suitable for various applications, including medical and industrial uses, while degrading within a reasonable time frame.
Implementation Method 1
the wet wipe is dissolvable by cold, warm or hot water with no aid of any chemical agents
Data Source
AI summary
A moist or wet wipe comprising or consisting of a non-woven wet laid material which contains or consists of soluble material and is coated or impregnated with cleaning or moisturising substances.