A packaging sheet for containing foodstuff is proposed which comprises a substrate of synthetic resin and a metallic film layer laminated to the substrate through an adhesive layer and a resin layer having a lower bond strength than the adhesive layer. Food packaging containers using the packaging sheet...http://www.google.de/patents/US4848931?utm_source=gb-gplus-sharePatent US4848931 - Packaging sheet and containers and pouches using the sheet
