An elongated, self-adhesive wound dressing is provided which includes a hydrogel layer secured to a vapor permeable bacterial barrier layer. The vapor permeable barrier layer possesses sufficient porosity such that it readily adheres to the hydrogel layer without the need for an adhesive layer....http://www.google.com/patents/US5674523?utm_source=gb-gplus-sharePatent US5674523 - Self-adhesive hydrogel wound dressing
