glassislife.com
#glassislife
How Glass is Made
Using all-natural materials, O-I manufactures one of the healthiest and most sustainable packaging materials available.
For more than 100 years we have upheld this glassmaking tradition and, with a culture grounded in innovation,
we deliver iconic, brand-building glass packaging to a growing global marketplace.
1
Ingredients
Cullet
(Recycled Glass)
Silica Sand
Limestone
All-natural raw
materials and quality
cullet are combined into
a batch mixture and
transferred to the furnace
for melting.
Soda Ash
2
Melting
7
The furnace heats
the batch to about
1565º C (or 2850º F),
creating a liquid molten
glass mixture.
After inspection, the
finished glass
containers are
prepared for shipment
to customers.
6
3
Molten Glass
Separation
5
Forming &
Moulding
Glass gobs are then
diverted into moulds within
the forming machines
where they are blown
into containers.
Inspection
Before shipping,
each glass container
undergoes a rigorous
inspection process to
ensure the highest
quality, eliminating
defective containers.
Rejected bottles are
re-melted and the
process begins again.
Upon exiting the furnace,
the liquid is cooled to
a uniform temperature
and cut into “gobs”
of molten glass.
4
Packing &
Shipping
Annealing
Once the containers
are formed, they are
reheated in process
equipment, called
the lehr, and gradually
cooled.