Method for forming stratified rubber article with variable cure rate
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United States of America Patent
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Jul 11, 2017
Grant Date -
Jun 23, 2011
app pub date -
Nov 19, 2010
filing date -
Dec 23, 2009
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Abstract
A method of forming a tread comprising two or more layers of rubber is described. The method includes the steps of: extruding a rubber compound through an extruder and a gear pump and mixing with an accelerant and then applying a continuous strip of rubber directly onto a tire building machine to form a first layer of rubber having a first cure rate; adjusting the amount of accelerant to obtain a second cure rate different than said first cure rate, and then applying a strip of rubber having a second cure rate onto the tire building machine, wherein one of the cure rates is faster than the other cure rate.
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