DIE FOR GLASS ROD MANUFACTURE (VERSIONS) Russian patent published in 2017 - IPC C03B37/08 

FIELD: chemistry.

SUBSTANCE: die for glass rod manufacture is a plate with a hole, the shape and size of which are determined by the shape and size of the glass rod. For one version, the hole edge portion corresponding to the straight portion of the glass rod cross section is concave with curvature radius calculated by the formula. In accordance with another version, the hole edge portion corresponding to the convex portion of the glass rod cross section is convex, with curvature radius calculated by the formula.

EFFECT: possibility of glass rods manufacture directly from the glass block, excluding preform manufacture, grinding and polishing.

2 cl, 5 dwg