Expandable bladder for tyre-curing apparatuses, a manufacturing method thereof, and a process for manufacturing tyres for vehicle wheels
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United States of America Patent
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Dec 4, 2012
Grant Date -
Oct 25, 2007
app pub date -
Oct 31, 2003
filing date -
Oct 31, 2003
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Abstract
An expandable bladder has at least one first layer of butyl material and one second layer of silicone material, radially external to the first layer. The first and second layers have an undulated interface profile defining mechanical-engagement elements between the first and second elastomer materials. A process for manufacturing bladder as well as a tire molding and vulcanising apparatus incorporating the bladder.
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