Vacuum Cleaner Filter Bag Composition Using Recycled Textile Materials
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Solution Overview
Problem
Vacuum cleaner filter bags made from nonwovens have limitations in dust storage capacity and service life, and the use of high-quality, non-biodegradable materials raises ecological concerns, while biodegradable options are not effectively composted due to the non-biodegradable nature of vacuumed products.
Innovation Solution
Development of vacuum cleaner filter bags composed of at least 40% recycled materials, utilizing nonwovens with fibrous and/or pulverulent recycled textile materials, or cotton linters, which are bonded using thermally activated fibers to achieve improved dust separation performance and service life, with a specific volume of at least 20 cm3/g, enhancing ecological and economic advantages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If high-quality nonwovens 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 materials and cotton linters with specific fiber length distributions (mixing short and long fibers) to achieve optimal separation performance and mechanical strength while using lower-cost recycled materials instead of high-quality virgin nonwovens
Solution Approach 2:
The patent creates a composite nonwoven structure combining different types of fibers (recycled textile materials, cotton linters, and binding fibers) to achieve synergistic effects where the composite material provides both the required mechanical strength and separation performance at lower cost than high-quality virgin materials
2Strength
If high-quality nonwovens are used for filter bags, then mechanical strength is improved, but ecological properties worsen
Solution Approach 1:
The patent optimizes the fiber composition parameters by using a mixture of short and long fibers from recycled materials, with specific attention to fiber length distribution, to achieve adequate mechanical strength while maintaining ecological friendliness through recycled content
Solution Approach 2:
The patent develops a composite nonwoven material combining recycled textile fibers, cotton linters, and thermoplastic binding fibers, where the composite structure provides the necessary mechanical strength while the high proportion of recycled materials ensures ecological compatibility
3Strength
If multiple layers with support layers are used, then mechanical strength is improved, but device complexity increases
Solution Approach 1:
The patent merges the functions of multiple filter layers into a single nonwoven layer by incorporating a mixture of short and long fibers that collectively provide both mechanical strength and filtration capability, eliminating the need for separate support layers and reducing overall design complexity
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 exhibit improved dust storage capability and constant suction power with a larger pore volume, correlating with higher specific volume and lower volumetric weight, thus offering superior performance and extended service life while being more ecologically friendly.
Implementation Method 1
bonded using thermally activated fibers
Data Source
AI summary
The present invention relates to vacuum cleaner filter bags composed of waste products of the textile industry. In addition, possibilities of use for waste products of the textile industry for vacuum cleaner filter bags are provided. The vacuum cleaner filter bag comprising a wall surrounding an inner space and composed of an air-permeable material and an inlet opening introduced into the wall, characterized in that the air-permeable material comprises at least one layer of a nonwoven that comprises fibrous and/or pulverulent recycled textile material and/or cotton linters, with the specific volume of the layer of the nonwoven amounting to at least 20 cm3/g.