Apparatus for press-forming molten bodies

摘要

The invention relates to an apparatus for press-forming a molten gob made of meltable material, especially of glass or glass ceramics, into a body of specific shape; with compression moulds which form with each other a form cavity for receiving the gob; the compression moulds consist at least in the zone of the forming surfaces of an open-pore material; the compression moulds are connected to a pressure gas source in order to produce a gas stream which emerges from the forming surfaces. According to the invention, in the open-pore material of the forming surfaces the pores close to the forming surfaces are smaller than the pores remote from the forming surfaces.