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US 8,147,936 B2Granted
Composite membrane for chemical and biological protection
AssigneeGeneral Electric Company
InventorsVishal Bansal, Yit-Hong Tee, Reena Srivastava
Life of this patent
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Abstract
A system, in certain embodiments, includes a protective membrane having first and second layers. The first layer is air permeable, vapor breathable, and liquid repellant. The second layer is vapor breathable, liquid repellant, and adsorptive of chemical and/or biological agents.
Claims20
A system, comprising:
- a protective membrane, comprising:
- a first layer that is air permeable, vapor breathable, and liquid repellant;
- a second layer that is vapor breathable, liquid repellant, and adsorptive of chemical and/or biological agents.
A material composition, comprising:
- a porous layer that is air permeable, vapor breathable, and liquid repellant;
- and
- a barrier layer that is vapor breathable, liquid repellant, and adsorptive of chemical and/or biological agents.
A system, comprising:
- a protective fabric made with a multi-layer membrane, comprising:
- a first layer that is air permeable, vapor breathable, and liquid repellant;
- a second layer that is vapor breathable, liquid repellant, and adsorptive of chemical and/or biological agents, wherein the first and second layers have a moisture vapor transmission rate of at least greater than or equal to approximately 10,000 g/m2/day, the first and second layers have a hydrostatic Mullen value of at least greater than or equal to approximately 10 psi, and the first layer has an air permeability rate of at least greater than or equal to approximately 0.02 cfm.
Dependencies are inferred from the claim text.