This invention relates to a process for forming a single-layer, durably wettable polymeric web having a plurality of apertures. This process comprises melting a mixture of at least one thermoplastic polymer and at least one migratable surfict and extruding the mixture to form a single-layer,...http://www.google.com/patents/US5834092?utm_source=gb-gplus-sharePatent US5834092 - Apertured films having durable wettability and processes for making them
