An insulating cup or container (50) and a method of manufacturing it comprises (first embodiment) providing a sidewall blank (12B) having two sections separated by a fold score (15), and a separate insulating sheet (18)(corrugated, ribbed, embossed, foamed, perforated, etc.) which is adhesively fastened...http://www.google.de/patents/US6196454?utm_source=gb-gplus-sharePatent US6196454 - Insulated cup and method of manufacture
