Importance

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Abstract

The application relates to a water transfer compound, preferably for use for the humidification of process gases for fuel cells, comprising:—a water-permeable and essentially gas-impermeable water transfer layer as well as—at least one thermoplastic protection layer which is water- and gas-permeable at least in sections, where—the water transfer layer and the thermoplastic protection layer overlap each other at least in sections and comprise a first and a second overlapping area, where—the water transfer layer in the first overlapping area is accessible for humid gases through the thermoplastic protection layer and the water transfer compound is thermocompressed in the second overlapping area so that the water transfer layer in the second overlapping area is not accessible for humid gases through the compressed thermoplastic protection layer.

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First Claim