Electrostatically Charged Fiber Mask with Powder Absorption
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing face masks with activated carbon fibers are expensive and difficult to manufacture due to their non-weldability, and the use of spherical or broken activated carbon particles reduces their active surface and filtration performance.
Innovation Solution
A face mask with an intermediate layer composed of electrostatically charged staple fibers or filaments coated with a powdery absorption material, such as hydrophobic zeolites or hydrophobic porous polymers, which provides effective particle separation and odor filtration while being cost-effective and easy to produce.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If activated carbon fibers are used for odor filtration, then odor filtration efficiency is improved, but manufacturing cost and complexity increase due to non-weldability
Solution Approach 1:
The filter material is divided into functionally distinct layers: an intermediate layer containing electrostatically charged fibers for particle separation, and outer layers containing absorption materials (such as activated carbon particles or hydrophobic porous polymers) for odor filtration. This segmentation allows each layer to be optimized independently, with the outer layers providing odor filtration through materials that can be effectively bonded, while the intermediate layer provides particle separation through electrostatic charging.
Solution Approach 2:
The electrostatically charged intermediate layer acts as an intermediary between the particle separation function and the odor filtration function. The charged fibers in this intermediate layer secure the absorption materials in the outer layers, ensuring they remain in place during use while allowing breathability. This intermediary layer solves the non-weldability problem by using electrostatic adhesion rather than mechanical bonding.
2Ease of manufacture
If spherical or broken activated carbon particles are used, then manufacturing cost decreases, but active surface area and filtration performance are reduced
Solution Approach 1:
The patent employs absorption materials with highly developed porous structures, such as hydrophobic porous polymers or activated carbon particles with controlled pore sizes and high surface areas. These porous materials provide large active surfaces for odor adsorption even when used as particles, maintaining high filtration performance while allowing cost-effective manufacturing through various bonding methods.
3Stability of the object's composition
If activated carbon particles are bonded to carrier material, then structural stability is improved, but active surface area is lost
Solution Approach 1:
The patent uses thin, breathable membrane structures as carriers for the absorption particles. These thin film structures provide minimal mechanical support while maximizing the exposed active surface area of the absorption particles. The membranes are designed to be sufficiently thin that they do not significantly block pores or reduce the effective surface area of the absorption materials, yet provide enough structural stability to maintain particle positioning.
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 electrostatically charged fibers ensure secure adhesion of the absorption material, achieving efficient odor filtration and particle separation with a large surface area, while maintaining a simple and inexpensive manufacturing process.
Implementation Method 1
the fibers, which are electrostatically charged, ensure that the absorption materials adhere securely
Implementation Method 2
a large free surface area of the absorption materials is achieved
Data Source
AI summary
The face mask has a filter material that is provided with an inner layer, an outer layer and an intermediate layer. The intermediate layer has electrostatically charged staple fibers or electrostatically charged filaments or electrostatically charged fiber-networks. A powdery absorption material is applied on the electrostatically charged fibers of the intermediate layer. The absorption material is selected from hydrophobic zeolites hydrophobic porous polymers or crystalline metal-organic complexes, where activated carbon is provided.