Method for direct treatment of cork stoppers, using supercritical fluids

Vesna Najdanovic-Visak (Inventor), Manuel Luis de Magalhaes Nunes da Ponte (Inventor), Jose Antonio da Silva Lopes (Inventor), Marina Manic (Inventor), Ana Cristina de Avelar Lopes Cardoso Mesquita (Inventor), Rui Pedro Moreira da Silva (Inventor), Isabel Maria de Queroz Montenegro Sollari Allegro (Inventor)

Research output: Patent


This invention describes a method which permits direct treatment of natural cork stoppers, using supercritical fluids with the aim to eliminate or significantly reduce the quantity of cork contaminants, namely 2, 4, 6-trichloroanisole. The process uses a separating device which permits natural cork stoppers to go through compression/decompression cycles without losing their shape and maintaining their sealing properties. This invention refers also to the natural cork stoppers treated by this method.
Original languageEnglish
Patent numberWO/2010/093273
IPC B27K 7/00,B67B 1/03
Filing date12/02/10
Publication statusPublished - 19 Aug 2010


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