Bottle Manufacturing
Glass Bottle Manufacturing
Making Glass Bottles Process
1. Mixing raw materials and cullet
The main raw materials used to produce glass are sand, soda ash, limestone. We mix the raw materials and combine with premium cullet. Batching raw materials and transferring into the melting furnace.
2. Melting mixture into liquid
Batched materials will be turned into molten liquid glass when the melting furnace reaching up to 1600 Degree ℃. Applying auto-system to control melting, maxizing fuel efficiency, saving energy consumption.
3. Forming shapes and molding
The melton gobs are diverted into forming machine. Press-blow or blow-blow methods is introduced. The pre-formed bottle flip out from the bank mold into final mold to create desired glass containers.
4. Annealing
After the forming machine, each glass bottle or jar goes through an annealing step. Annealing is needed because the outside of the container cools quicker than the inside. The annealing process reheats the container and is then gradually cooled to release stress and strengthen the glass. Glass containers are heated to about 565 degrees Celsius and then cooled slowly to 150 degrees Celsius. Then the glass bottles and jars head to the cold end coater for a final outside coating.
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1. Mixing raw materials and cullet |
2. Melting mixture into liquid |
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3. Forming shapes and molding |
4. Annealing |