Composition adapted to be used for manufacturing stoppers and process of manufacture
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United States of America Patent
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May 31, 1994
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N/A
app pub date -
Sep 22, 1992
filing date -
Jan 25, 1991
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Abstract
This invention relates to a composition which may be used in particular for manufacturing stoppers and to a process for manufacturing same. A composition is principally constituted by particles of ligneous plant matters such as natural cork or wood, by a plastics material of closed cellular structure such as expansible microspheres, and by a binding agent; a stopper comprises at least one active part constituted by a composition according to the invention, and said binding agent is a glue suitable for contact with foodstuffs, for example of the polyurethane or acrylic type. The technical domain of the invention is that of the cork industry.
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