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BLADDER, AN APPARATUS AND A METHOD FOR SHAPING AND CURING A TIRE

  • US 20110001273A1
  • Filed: 09/14/2010
  • Published: 01/06/2011
  • Est. Priority Date: 10/13/2008
  • Status: Abandoned Application
First Claim
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1. A method for shaping and curing a green tire, the method comprising the steps of:

  • providing a mold comprising a bladder, the bladder comprises an elastomeric membrane;

    putting a green tire into the mold, the tire comprising an inner surface forming a cavity;

    inflating the bladder so that the bladder expands in the cavity of the tire;

    curing said tire;

    wherein the elastomeric membrane of the bladder is weakened in those regions which come into contact with the shoulder portions of the tire cavity when the bladder is fully inflated in the tire cavity, the rigidity of the membrane in the regions coming into contact with the remaining portions of the tire cavity when the bladder is fully inflated being higher than at those regions coming into contact with the shoulder portions.

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