Moisture permeable double disk

Abstract From the Canadian patent

Skin contact devices are disclosed for treating the skin, including a film layer which is non-occlusive to the passage of water vapor an, occlusive layer adhesively affixed to the inner surface of the film layer, a medicament on the inner surface of the occlusive layer, in which the occlusive layer does not permit water vapor or the medicamebt to pass therethrough, and characterized by a series of vent slots extending through the occlusive layer so that water vapor contained within the occlusive layer can pass through these vents for subsequent passage through the film layer itself and substantially preventing the medicament from passing through the film layer.