PRESS FORMING DEVICE FOR MOLTEN BODY

摘要

PROBLEM TO BE SOLVED: To provide a press forming device which is capable of making a body having high surface quality by lowering its surface roughness. SOLUTION: The device for press forming a gob consisting of a molten material, more particularly a gob consisting of glass or glass ceramics to the body of a specific shape has a pressing die for forming the shape cavity for receiving the gob, in which the pressing die has at least a zone of a forming surface of a perforated material and is connected to a pressurized gas source in order to form the gaseous flow emitted from the forming surface and pores proximate to the forming surface of the perforated material of the forming surface is formed smaller than the pores isolated from the forming surface.