Patent ID: 6191335
Filing Date: 2001-02-20
Classification: A61F,A61L

Abstract:
A wound dressing comprising a backing film, an apertured wound facing layer and an absorbent layer intermediate the backing film and wound facing layer, the backing film having a water transmission rate greater than the moisture vapour transmission rate thereof and the absorbent layer comprising a fibrous layer comprising a fibrous component which, on absorbing moisture, undergoes a phase change to form a gel and a component which does not undergo a phase change to form a gel in the presence of water, the water transmission rate of the backing film being at least 4000 gm.sup.-2 24 hr.sup.-1 at 37.degree. C. and the moisture vapour transmission rate of the backing film being at least 1000 to 3000 gm.sup.-2 24 hr.sup.-1 at 37.degree. C. and a relative humidity difference of from 10 to 100%.