Method of forming a rubber article and apparatus

摘要

A method of forming a rubber article (200, 300) comprising two or more layers (220, 230) of rubber is disclosed. The method comprises the steps of extruding a first rubber compound (A) through a first extruder (20) and a first gear pump and mixing a first mixture comprising the first rubber compound (A) and an accelerant, the first mixture having a first cure rate; applying one or more first strips of rubber of the first mixture directly onto a substrate, a tire building machine, a tire building drum or a tire mandrel; adjusting the amount of accelerant and/or using an other accelerant; mixing a second mixture comprising the first rubber compound (A) and the accelerant and/or the other accelerant, the second mixture having a second cure rate different from the first cure rate; and applying one or more second strips of rubber of the second mixture. Also an apparatus (10) for manufacturing a rubber article (200, 300) is disclosed.