3. Manufacture of glass bottles, jars and flasks by moulding

Automated industrial production of glass bottles, jars and flasks is carried out according to the following general process:

• preparation of the vitrifiable mixture [sand + sodium carbonate + calcium carbonate + cullet (recycled glass) + secondary components] ;

• melting the vitrifiable mixture in furnaces (oil, gas or electric);

• thermal conditioning of molten glass for forming ;

• blank forming then final blowing ;

• annealing to release mechanical stress;

• external surface treatments for hardening and lubrication ;

• functional checks (geometry, appearance, mechanical properties) ;

• packaging for storage and transport...