A closure material for sealing glass containers comprising a metal foil and a thermally adhesive composition layer formed on one surface of the metal foil and comprising a carboxyl-modified saponified product of ethylene-vinyl acetate copolymer and up to 30 parts by weight of an inorganic compound per...http://www.google.ca/patents/US4686133?utm_source=gb-gplus-sharePatent US4686133 - Closure material for sealing glass containers