A multiple layer structure comprising a first and a second skin layer, each skin layer composed of a polypropylene containing polymer, and a radio frequency (“RF”) susceptible layer adhered to and between the first and second skin layers. The RF layer has a first component of a propylene based polymer,...http://www.google.de/patents/US6964798?utm_source=gb-gplus-sharePatent US6964798 - Multi-layered polymer based thin film structure for medical grade products
