
Bottlemaking annealing furnace,
Encyclopédie de Diderot et D'Alembert, 18th century
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Bottles and Flasks
Different forms of glass containers have been developed
throughout the centuries: bottles, flasks, pots and phials,
etc. all a guarantee of good preservation and product authenticity.
While traditional production methods have been retained and
have hardly evolved in the rare artisan glassmaking and artists'
workshops, 95% of mass production is currently completely
automated.
In 1898 semi-automatic moulding processes for hollow glass
came onto the scene followed by total automation in 1920.
This was a transposition from mould blowing which was used
for glass containers as well as everyday table glassware.
A mandrel, the feeder, fed the correct quantities of glass
at regular intervals from the tank furnace.
This was pressed into a first cast, transferred into a second
cast for blowing using compressed air and finally refired
in an annealing furnace. The glass was then checked and transported
to the packing warehouse or the silkscreen belt.
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