BLADDER FOR TIRE VULCANIZATION, CAPABLE OF SMOOTHLY EXHAUSTING AIR BY INCREASING EXPANSIVE FORCE AND SHORTENING CONTACT TIME BY CONCENTRATING A SHOULDER UNIT ON HEAT SOURCE AND A PRESSURE SOURCE

摘要

PURPOSE: A bladder for tire vulcanization is provided to increase contact force and contact pressure of a green tire and the bladder using a triangle protrusion which is formed on the center part of the bladder and guides a heat source and a pressure source to a shoulder unit.;CONSTITUTION: A bladder for tire vulcanization is contacted with the inner side of a green tire when the green tire with a low aspect ratio is inserted in a vulcanizing mold device and the green tire is vulcanized. The bladder is expanded by a heat source and a pressure source(N_2) and the bladder expands the green tire at a high temperature and a high pressure. A center part(d) of the bladder(3) includes a triangle protrusion(5) for guiding the flow of the heat source and the pressure source to a shoulder unit of the green tire.;COPYRIGHT KIPO 2010