Patent ID: 7553149
Filing Date: 2009-06-30
Classification: B28B,B30B,Y10S

Abstract:
1. An isostatic die for tile forming comprising a metal body ( 2 ) and an elastically deformable membrane ( 6 , 6 ′, 6 ″) which is solidly gripped to the metal body ( 2 ) in a plurality of distinct predetermined fixing zones ( 25 , 28 , 290 , 21 , 22 , 24 ′, 24 ″), such that an intermediate hermetically-sealed chamber is delimited between the elastic membrane ( 6 , 6 ′, 6 ″) and the metal body ( 2 ), which chamber is destined to contain an incompressible fluid, characterised in that rigid bushings ( 5 , 5 ″) are sunk into the elastic membrane ( 6 , 6 ′, 6 ″), each of which rigid bushings ( 5 , 5 ″) is located at a fixing zone ( 25 , 28 , 290 , 21 , 22 , 24 ′, 24 ″) of the elastic membrane ( 6 , 6 ′, 6 ″) to the metal body ( 2 ), and defines a breather mouth ( 52 ) which passes into a body of the elastic membrane ( 6 , 6 ′, 6 ″) and which communicates with an outside environment through a system of discharge conduits ( 9 ) afforded in the metal body ( 2 ), each rigid bushing ( 5 , 5 ″) receiving a respective obturator body ( 7 ), which obturator body ( 7 ) enables passage of air and at least partially prevents passage of ceramic powder.