Method and tunnel furnace for the thermal treatment of glass...

Details Method and tunnel furnace for the thermal treatment of glass... Method and tunnel furnace for the thermal treatment of glass...

C - Chemistry, Metallurgy

03

B

49/47

C03B 25/00 (2006.01) C03B 25/06 (2006.01)

Patent

CA 1070951

ABSTRACT: A method of thermally treating glass products in which the products are conveyed through a number of heating zones and/or cooling zones of a tunnel furnace and are heated and cooled, respectively, by means of an airflow maintained in each zone in a direction transverse to the direction of transport; according the invention, the velocity of the airflow increases gradually both in the heating zones and in the cooling zones; for that purpose, two perforated partitions having gradually increasing flow apertures for the airflow are provided in each zone.

235899

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