Adsorption Filter Material with Segmented Adhesive Dots
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Solution Overview
Problem
Existing adsorption filter materials for protective suits and garments against chemical and biological warfare agents suffer from heat buildup due to impermeability, mechanical instability, and high adhesive usage, leading to reduced wear comfort and adsorption efficiency.
Innovation Solution
A multilayered adsorption filter material with a sheetlike carrier layer construction, where an activated carbon fiber fabric is durably adhered to the outer carrier layers using noncohering adhesive dots, ensuring high gas and water vapor permeability, mechanical stability, and reduced adhesive coverage for enhanced flexibility and adsorption efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If uniform adhesive bonding is used to adhere activated carbon fiber fabric to carrier layers, then mechanical stability is improved, but air permeability deteriorates and adhesive consumption increases
Solution Approach 1:
The continuous adhesive bonding is segmented into discrete adhesive dots or spots distributed across the carrier layer. This segmentation reduces the total quantity of adhesive required while maintaining mechanical stability through strategically positioned bonding points that secure the activated carbon fiber fabric without creating a continuous impermeable barrier.
Solution Approach 2:
Adhesive bonding is applied locally at specific dots or spots rather than uniformly across the entire surface. This local quality approach concentrates adhesive application only where mechanical bonding is needed, reducing overall adhesive consumption while preserving air permeability in the non-bonded regions.
2Stability of the object's composition
If uniform adhesive bonding is used to adhere activated carbon fiber fabric to carrier layers, then mechanical stability is improved, but air permeability deteriorates
Solution Approach 1:
The continuous adhesive barrier is segmented into discrete dots or spots, creating localized bonding zones that maintain mechanical stability while leaving the majority of the fabric structure open and permeable to air flow.
Solution Approach 2:
Adhesive bonding is applied locally at specific points rather than uniformly, creating localized stable bonds that do not compromise the overall air permeability of the activated carbon fiber fabric structure.
3Reliability
If activated carbon particles are bonded to adhesive printed on textile carrier, then adsorption function is provided, but mechanical stability deteriorates under extreme stress
Solution Approach 1:
Activated carbon fiber fabric with inherent porous structure is used instead of loose particles bonded to adhesive. The fabric structure itself provides both the adsorption function through its porous nature and the mechanical stability required to withstand extreme stress during protective suit application.
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 solution provides a mechanically stable, flexible, and comfortable adsorption filter material with improved adsorption efficiency and reduced weight, capable of effectively adsorbing chemical and biological agents while maintaining wear comfort and robustness under mechanical stress.
Implementation Method 1
an adsorption filter material having a protective function against biological and chemical noxiants and poisons... an adsorbing layer which comprises an activated carbon fiber fabric
Implementation Method 2
the adhering of the activated carbon fiber fabric to the two carrier layers is in each case provided through the application of adhesive in the form of noncohering adhesive dots
Data Source
AI summary
A gas and water vapor pervious adsorption filter material having a protective function against biological and chemical noxiants and poisons and a multilayered layer construction including a first sheetlike carrier layer, a second sheetlike carrier layer and, interposed between the first carrier layer and the second carrier layer, an adsorbing layer, the adsorbing layer comprising an activated carbon fiber fabric which is durably adhered to the first carrier layer and to the second carrier layer by means of an adhesive.