Glass mould for blown pieces with flat- - edged openings

摘要

Bottom of the mould includes a part not bigger than the opening to be made in the product, which enters the mould and has retractable holding lugs. Specifically the mould may have a composite bottom with annular seals and seats for the removable sides of the finishing mould and for the movable bottom plate with suction ring. The bottom may have bores to take the holding lug actuator and the inflation valve rod, as well as suction and inflation channels.