punch for punch press isobarico tile isobarico for pelleting of ceramic tiles and method for the manufacture of ceramics and method for the manufacture of saidhallmark. hallmark.

摘要

The isobaric punch (1) for pressing ceramic tiles (2) comprises a punch body provided with intercommunicating cavities (5) containing an incompressible fluid and having an end closed by an elastic membrane (4), the other end having a bottom portion provided with annular elastic positioning means (11; 20; 23) in contact with respective rigid inserts (9) inserted into the cavities themselves; the method comprises vulcanizing the elastic membrane onto the punch at such a pressure as not to deform the elastic means (11; 20; 23). IMAGE