Glass Manufacturer

There are 2 main types of glass, plate glass and bottle glass, which are manufactured in the factory. The process itself needs 2 major steps, the melting and the shaping, before the outcome can be spread out to the store. The first step is the melting, the ingredients:sand, silica (SiO2); soda (Na2CO3), a sodium salt of carbonic acid; and limestone, of which only calcium oxide (CaO) is extracted are burnt and molten in the furnace with temperature for about 2.300°-2.800° F (1260°-1537°C). After becoming molten glass, it is distributed to the roller machine for shaped. The molten glass, or so called 'glob', is cut into plate while it is rolled over the roller machine and its temperature are lowered to make the molten glass change form from liquid state to solid form of any size the factory need. The the glass plate is cooled down again to maintain its solid state. Instead of go through the rolling machine, which makes the plate glass, the molten glass go through rather different shaping stage to become bottle glass: the molten glass fills the removable would in the shape of bottle glass while air acts as the shaper of inner shape, it makes hole inside the glass bottle, as the glass takes bottle form and is 'pushed' by the air, its temperature is also cooled down to make the bottle glass solid and bottle glass is ready when its temperature reach room condition. When the shaping stage is over, the plate glass and bottle glass is ready to be delivered.

Esqi Aktiadi
16507162
STEI

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