EXPANDIERBARE BLASE FÜR REIFENHERSTELLUNGSVORRICHTUNGEN, HERSTELLUNGSVERFAHREN DAFÜR UND VERFAHREN ZUR HERSTELLUNG VON REIFEN FÜR FAHRZEUGRÄDER

摘要

An expandable bladder has at least one first layer of a natural or synthetic rubber-based material or a mixture thereof, 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 a bladder as well as a tyre manufacturing apparatus incorporating bladders is also disclosed.