Process for treating cork material and cork stoppers
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United States of America Patent
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Jun 3, 2003
Grant Date -
N/A
app pub date -
Feb 9, 2001
filing date -
Aug 11, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention concerns a method for treating a cork-based product useful for making stoppers. The invention is characterised in that it comprises the following steps: a) introducing the product in a sealed container; b) subjecting said product to the action of water vapor under pressure ranging between 2.10.sup.5 and 30.10.sup.5 Pa for a duration ranging from about 5 seconds to 5 minutes; c) producing an expansion to restore atmospheric pressure inside the container; d) recuperating the treated product.
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