Improvements in or relating to the moulding of tempered glass.

摘要

The present invention provides a mould for forming tempered sheet glass in which a heat insulating material is bonded to a forming surface of the mould, and jet holes for cooling air are bored through the heat insulating material, characterised in that a part of said forming surface (3) which is used for deeply curving glass sheets includes a rib-like projection (12) covered with said heat insulating materials (5).