Extrusion for Glasses

Many Applications for Extrusion Glasses

Extrusion for glasses to which the usual processes of casting, blowing or drawing are difficult to apply. This is true for glasses with a narrow working range (short glasses), for glasses which strongly tend to crystallize and for glasses with a very high softening point.

Due to the extrusion pressure, the working range is enlarged to higher viscosities, the manufacturing process is shifted into a range of lower crystallization rates and the lower working temperature can be controlled in a more convenient way.

Extrusion could be applied to conventional glasses, if products with non-circular cross sections are to be manufactured.