Vacuum-cleaner filter bag made from recycled plastic
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Solution Overview
Problem
Vacuum cleaner filter bags made from non-woven plastics face challenges in ecological and economic sustainability due to high production costs and environmental impact, with existing biodegradable options not effectively addressing disposal issues.
Innovation Solution
Development of vacuum cleaner filter bags primarily composed of recycled plastics, with a minimum 40% to 95% recycled material content, utilizing bicomponent fibers and fibrous/dusty recycled materials from textile production, which reduces raw material usage and enhances ecological and economic advantages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If non-woven fabrics made from virgin thermoplastics are used for filter bags, then separation performance and mechanical strength are improved, but production costs increase and ecological sustainability deteriorates
Solution Approach 1:
The patent applies the principle of discarding and recovering by using recycled plastic materials (post-consumer and post-industrial waste) as the primary raw material for producing non-woven filter fabrics. This replaces virgin thermoplastics, thereby reducing production costs and improving ecological sustainability while maintaining the required separation performance and mechanical strength through controlled recycling processes
Solution Approach 2:
The patent applies parameter changes by controlling the molecular weight, viscosity, and composition of recycled plastic materials to ensure they meet the performance requirements for filter bags. By adjusting these parameters during the recycling and reprocessing stages, the patent maintains separation efficiency and mechanical properties comparable to virgin materials while reducing costs
2Reliability
If high-quality and heavy nonwovens are used for disposable filter bags, then functional properties are improved, but ecological sustainability deteriorates due to resource consumption
Solution Approach 1:
The patent recycles plastic waste materials that would otherwise be discarded, transforming them into high-quality non-woven filter fabrics. This process reduces raw material consumption by utilizing post-consumer and post-industrial plastic waste, thereby improving ecological sustainability without compromising functional properties
Solution Approach 2:
The patent applies local quality by creating multi-layer non-woven structures where different recycled plastic materials are used in specific layers to optimize local functions. For example, certain layers may use recycled PET for filtration while other layers use recycled polypropylene for structural support, ensuring optimal performance while minimizing overall material consumption
3Loss of substance
If biodegradable materials are used for filter bags, then ecological sustainability is improved, but disposal effectiveness deteriorates since incineration is the primary disposal method
Solution Approach 1:
The patent closes the material cycle by recycling plastic waste into new filter bags, creating a circular economy system. Instead of using biodegradable materials that are ineffective for incineration disposal, the patent recycles the same plastic materials indefinitely, eliminating waste disposal issues while maintaining ecological sustainability
4Reliability
If multiple layers and complex constructions are used in filter bags, then separation performance is improved, but device complexity and production cost increase
Solution Approach 1:
The patent applies composite materials by combining different recycled plastic materials in multi-layer non-woven structures. Each layer is composed of recycled plastics with specific properties optimized for its function, creating a composite structure that achieves high separation performance while managing complexity through systematic material selection and layer integration
Data Source
AI summary
The invention related to a vacuum-cleaner filter bag which is primarily made from plastic recyclates.