FIELD: production processes.
SUBSTANCE: in compliance with this invention, glass plates are carried into the oven for heating. In heating, the glass plates vibrate, that is, move back and forward driven by aforesaid rolls. First, the glass plates feed is realised at the 1st speed v1, while then, when the glass plate gets fully in the oven, the speed reduces to the 2nd speed v2. The 1st turning point of vibration is realised after reduction in the 2nd speed v2 and in over 20 seconds after starting the heating.
EFFECT: reduced amount of defects on glass surface.
12 cl, 2 dwg
