Zeolite-Enhanced Face Mask Filtration and Sealing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current face masks, even multilayer ones, fail to provide adequate protection against fine and very fine airborne pathogens like SARS-CoV-2 due to poor adherence and inability to retain small particles, while also compromising comfort and being costly.
Innovation Solution
Incorporating a layer of zeolite powder with specific particle sizes and metal ions into the face mask structure, which enhances filtration and adsorption capabilities, reducing pathogen proliferation and CO2 accumulation, thereby improving protection and comfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multilayer face masks with TNT or non-woven fabric are used, then filtering capacity is improved, but adherence to face and ability to retain fine particles deteriorates
Solution Approach 1:
The patent applies a porous elastomeric material layer between the filtering layer and the user's face. This porous layer adheres to facial contours including nose, cheeks, and chin, creating a sealed interface that prevents leakage of fine particles while maintaining the filtering capacity of the upstream layers.
Solution Approach 2:
The mask combines multiple materials with different functions: a filtering layer (TNT or non-woven fabric) for particle capture, a porous elastomeric sealing layer for facial adherence, and a hydrophilic polymer layer for comfort. This composite structure resolves the contradiction by assigning sealing and filtering functions to different material layers.
2Reliability
If filtering layers with high protective capacity are used, then protection against pathogens is improved, but comfort and cost deteriorate
Solution Approach 1:
The patent applies different material properties to different regions: the porous elastomeric layer provides sealing at the facial interface where adherence is needed, while the upstream filtering layers provide pathogen protection. The hydrophilic polymer layer specifically addresses comfort by managing moisture at the skin contact point, allowing high-protection materials to be used without compromising comfort.
Solution Approach 2:
The porous elastomeric layer acts as an intermediary between the rigid filtering layer and the user's face, providing a compliant sealing interface. The hydrophilic polymer layer serves as a mediator between the filtering materials and skin, managing moisture and improving comfort during extended wear.
3Reliability
If electrostatic capture mechanisms are used for fine particles, then filtration efficiency is improved, but CO2 accumulation and discomfort increase
Solution Approach 1:
The patent segments the mask into distinct functional layers: upstream electrostatic filtering layers for high-efficiency particle capture, and a downstream porous elastomeric sealing layer with hydrophilic polymer for comfort and CO2 management. This segmentation allows the filtration and breathing comfort functions to be optimized independently in different regions of the mask.
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 zeolite-enhanced face mask effectively reduces the spread of SARS-CoV-2 and other pathogens by increasing filtration efficiency, improving comfort through reduced CO2 absorption, and minimizing particle dispersion, while maintaining a low cost and high safety standard.
Implementation Method 1
at least one further layer (103) interposed between the first (101) and the last layer (102), said further layer (103) being filled with a layer of zeolite
Implementation Method 2
Incorporating a layer of zeolite powder with specific particle sizes and metal ions into the face mask structure, which enhances filtration and adsorption capabilities
Implementation Method 3
zeolite powder with specific particle sizes
Implementation Method 4
For even smaller particles, the most important effect is the electrostatic one: the fibers electrostatically capture the fine particles, blocking them
Data Source
Figure 1
Figure 2
Figure 3
AI summary
Personal protective equipment (100) against pathogenic microorganisms to protect the airways of a user, comprising: - a first layer (101) and a last layer (102) in woven and stable fabric; - at least a further layer (103) made of fabric, said at least a further layer (103) being interposed between the first layer (101) and the last layer (102) and superficially covered with zeolite powder. The zeolite powder is obtained from synthetic zeolites type 3A and 4A or natural clinoptilolite.