Foam-on-film medical articles

A medical article comprising a liquid-impervious, moisture-vapor permeable polymeric film having directly bonded thereto an absorbent, substantially nonswellable foam comprising a hydrophobic polymer, wherein the article has a wet moisture vapor transmission rate of at least about 3000 g/m2/24 hours, at 38° C. and 20% relative humidity.

A wound dressing comprising a polyurethane film having directly bonded thereto an absorbent, substantially nonswellable foam comprising a hydrophobic polyurethane, wherein:

• the polyurethane film has a dry moisture vapor transmission rate of at least about 300 g/m2/24 hours at 38° C. and 20% relative humidity and a wet moisture vapor transmission rate of at least about 3000 g/m2/24 hours at 38° C. and 20% relative humidity;
• and
• the foam increases in volume by no greater than about 10% following a 30-minute soaking in phosphate buffered saline at 37° C.

A medical article comprising a liquid-impervious, moisture-vapor permeable polymeric film having directly bonded thereto an absorbent, substantially nonswellable foam comprising a hydrophobic polymer, wherein the foam absorbs greater than 250% by weight aqueous saline solution when immersed in phosphate buffered saline containing 0.9 wt-% NaCl at 37° C. for 30 minutes.

A medical article comprising a liquid-impervious, moisture-vapor permeable polymeric film having directly bonded thereto an absorbent, substantially nonswellable foam comprising a hydrophobic polymer, wherein the substantially nonswellable foam increases in volume by no greater than about 10% following a 30-minute soaking in phosphate buffered saline at 37° C.