A thermally stable microporous breathable film is provided comprising at least 35% filler, by weight of the filled-film, and a thermoplastic polymer blend of a first polyethylene polymer and a second polyethylene polymer. The first polyethylene polymer comprises 30%-70% by weight of the polymer blend...http://www.google.fr/patents/US6909028?utm_source=gb-gplus-shareBrevet US6909028 - Stable breathable elastic garments
