AIR PERMEABLE, LIQUID IMPERMEABLE BARRIER STRUCTURE FOR PROTECTIVE GARMENTS

摘要

A barrier structure which may be used in a gas-tight protective suit has an adsorption structure (2) and a membrane (5) attached to the adsorption structure (2). The adsorption structure has a layer of activated carbon (3) which may comprise particles bonded to a textile carrier (4). The membrane (5) is a liquid proof gas and vapour permeable polymeric membrane formed from an intrinsically permeable hydrophilic polymeric material such as a block copolymer with hard segmental nodes linked by a web of fibrils defining small molecular pores.