A laminated cap liner that, when subjected to an induction heating cap sealing process, can simultaneously release a container sealing material, such as aluminum foil, for adhering to a container and render the cap leak-resistant through the polymerization of a settable and/or a crosslinkable adhesive...http://www.google.es/patents/US4917949?utm_source=gb-gplus-sharePatente US4917949 - Leakproofing cap liners and tamperproofing containers by induction heating
Leakproofing cap liners and tamperproofing containers by induction heating