Bagpipes and a bag therefor

G - Physics – 10 – D

Patent

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G10D 7/06 (2006.01) B32B 5/18 (2006.01)

Patent

CA 1279216

ABSTRACT BAGPIPES AND A PIPE BAG THEREFOR A pipe bag is constructed from a flexible composite material which is airtight but readily permits the transmission of moisture vapour. At least one layer of the flexible composite material is a continuous hydrophilic layer. When a moisture vapour concentration gradient is present across said hydrophilic layer it transfers substantial amounts of water through the layer by absorbing water on the side of the layer at which the higher water vapour concentration exists, and desorbing water on the opposite side of the layer at which the water vapour concentration is lower. As a result of this the moisture concentration within the bag is regulated. (No Figure number)

578642

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