Sealing disc for a closure cap for containers

摘要

The sealing washer(3) has a layer(5) of a substance non-penetrable by oxygen and a layer of a deoxidising substance on the side of the washer facing the contents of the container. The layer non-penetrable by oxygen consists of polyvinylidene chloride, and the layer of deoxidising substance contains polyolefine carboxyl acid, especially in compound with additional polyolefine as a copolymer.