Method for making a composition for producing corks, composition and cork comprising same

摘要

The invention relates to a process for manufacturing a composition which can be used for producing stoppers. According to the invention, it comprises the following steps: a) sheets of cork are ground into small-sized granules, b) said cork granules are decomposed into granules having a high lignin content and into granules having a high suberin content, and c) the lignin-rich granules are separated from the suberin-rich granules in order to keep only the suberin-rich granules in said composition. The invention also relates to a composition comprising suberin-rich cork granules as well as to a stopper comprising such a composition.