Air-Permeable Textile Adsorption Layer for NBC Protection
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Solution Overview
Problem
Existing protective materials for chemical, biological, and radioactive threats face challenges such as heat buildup due to impermeability, limited air exchange, and issues with adsorbent accessibility and durability, leading to compromised safety and comfort in protective clothing and filters.
Innovation Solution
A textile protective material with a layered structure featuring a flat, air-permeable textile carrier coated with a dried and cured broken adhesive polymer foam, which provides a homogeneous adsorption layer with adsorbent particles, ensuring high air permeability and effective protection against chemical, biological, and radioactive threats while maintaining comfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If protective materials use impermeable rubber layers or membranes to block toxic substances, then protection against chemical and biological agents is improved, but air permeability and water vapor permeability deteriorate, causing heat buildup and reduced wearing comfort
Solution Approach 1:
The patent employs a porous PTFE membrane as the barrier layer that provides protection against toxic substances while maintaining air and water vapor permeability. The porous structure allows breathability and thermoregulation while the membrane's selective permeability blocks harmful agents, resolving the contradiction between protection and comfort.
Solution Approach 2:
The protective material uses a composite structure combining multiple layers including PTFE membrane, adhesive layers, and textile layers. This composite approach integrates the protective function of the membrane with the breathability and comfort of textile materials, achieving both high protection and wearing comfort simultaneously.
2Ease of operation
If protective materials use air-permeable structures with adsorbents like activated carbon to improve wearing comfort, then air exchange and comfort are improved, but the durability and accessibility of adsorbents deteriorate due to mechanical damage and limited protection
Solution Approach 1:
The patent implements a nested structure where the adsorbent layer is positioned between the outer PTFE barrier layer and the inner textile layer. This nesting provides mechanical protection to the adsorbents while maintaining their accessibility to contaminants, ensuring both durability and effective air exchange.
Solution Approach 2:
The protective material applies different properties to different layers: the outer PTFE layer provides chemical resistance and protection, the middle adsorbent layer provides filtration and adsorption, and the inner textile layer provides comfort and breathability. This local differentiation optimizes each layer's function while working together as a unified protective system.
3Reliability
If protective materials use heavy impermeable layers to ensure complete protection, then protection against NBC agents is improved, but weight increases, reducing mobility and comfort
Solution Approach 1:
The porous PTFE membrane provides effective NBC protection without requiring heavy impermeable materials. The membrane's molecular structure blocks chemical and biological agents while its porosity allows air passage, achieving high protection with minimal weight and maintaining wearer mobility.
Solution Approach 2:
The patent changes the physical parameters of the protective material by using a thin-film PTFE membrane instead of thick impermeable layers. This parameter change maintains protection effectiveness while dramatically reducing weight, improving both mobility and wearing comfort.
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 material achieves high air permeability and effective protection against harmful substances, reducing weight and improving accessibility of adsorbents, thus enhancing NBC protection while maintaining comfort and durability.
Implementation Method 1
a particulate adsorbent or a multiplicity of individual adsorber particles is applied to an adhesive layer applied to a textile carrier
Implementation Method 2
the adhesive layer being an air-permeable and/or discontinuous layer based on a dried and cured, in particular crosslinked, broken (decomposed) adhesive polymer foam
Implementation Method 3
based on a dried and cured, in particular crosslinked, broken (decomposed) adhesive polymer foam
Data Source
Figure 1A~1B
Figure 2A~2B
Figure 3A~4
AI summary
The invention relates to a textile protective material, in particular providing protection against radioactive harmful and/or toxic substances and/or against biological harmful and/or toxic substances and/or against chemical harmful and/or toxic substances, preferably a textile adsorption filter material, and to a method for the production thereof. The textile protective material is suitable in particular for producing protective equipment and protective objects and filters and filter materials of all types.