Recycled Nonwoven Vacuum Filter Bag With High Dust Capacity
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Solution Overview
Problem
Vacuum cleaner filter bags made from non-woven materials are costly and ecologically critical due to their high-quality, non-biodegradable nature, and existing attempts to improve ecological properties, such as biodegradable materials, are not effectively disposed of through composting or incineration.
Innovation Solution
Development of vacuum cleaner filter bags primarily composed of recycled materials, with a nonwoven fabric layer containing dusty and/or fibrous recycled textile materials, such as cotton or wool fibers, and binding fibers, achieving a high dust storage capacity and mechanical strength while minimizing virgin plastic usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If nonwoven materials made from thermoplastics are used for filter bags, then separation performance and mechanical strength are improved, but costs increase and ecological properties worsen
Solution Approach 1:
The patent changes the material composition parameters by incorporating recycled textile fibers (cotton, wool, silk) and biodegradable polymers (PLA, PHA, starch) to replace conventional thermoplastics. This parameter change maintains filtration performance while improving biodegradability and reducing ecological impact.
Solution Approach 2:
The patent creates composite nonwoven materials by combining recycled textile fibers with biodegradable polymers. This composite approach allows the filter bag to achieve both mechanical strength and biodegradability, resolving the contradiction between performance and ecological properties.
2Object-generated harmful factors
If biodegradable filter bags are used, then ecological properties improve, but disposal through composting is not feasible due to incineration requirements
Solution Approach 1:
The patent adjusts the biodegradability parameters by selecting materials that can be disposed of via incineration with energy recovery. The filter bags are designed to be combustible and non-toxic, allowing them to be safely incinerated while generating energy, thus making incineration a viable and environmentally friendly disposal option.
3Strength
If multiple layers of nonwoven materials are used, then mechanical strength and dust storage capacity are improved, but device complexity and costs increase
Solution Approach 1:
The patent divides the filter bag into multiple functional layers, each with specific properties: a support layer for mechanical strength, a capacity layer for dust storage, and a fine filter layer for particle separation. This segmentation allows each layer to be optimized independently while maintaining overall system performance.
Solution Approach 2:
The patent develops a multi-functional nonwoven material that combines support, capacity, and fine filtration properties in a single layer. This universal material reduces the number of layers needed, simplifying the overall filter design while maintaining mechanical strength and dust storage capacity.
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 filter bags maintain excellent dust separation performance and service life while significantly increasing the use of recycled materials, offering both economic and ecological advantages by utilizing at least 40% recycled content.
Implementation Method 1
the at least one layer of the nonwoven material, which comprises dusty and/or fibrous recycled material, has a density of 0.005 g/cm3
Implementation Method 2
a wall made of an air-permeable material that encloses an interior space
Data Source
Figure 1
AI summary
The invention provides a vacuum cleaner filter bag, comprising a wall made of an air-permeable material enclosing an interior space and an inlet opening introduced into the wall, the air-permeable material comprising at least one layer of a nonwoven fabric which is made from dusty and/or fibrous recycled material from the production of textiles , in particular cotton textiles, wherein the at least one layer of the non-woven fabric, which comprises dusty and/or fibrous recycled material, has a density of 0.005 g/cm3 to 0.03 g/cm3, in particular from 0.007 g/cm3 to 0.02 g/cm3.