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Bulgeable cap of coke / cap of coke bottle

Bulgeable cap of coke

The pressure in the bottle will rise while the coke bottle suffering a severe shaking, liquid will splashed everywhere if you opened the coke. It’s awkward.
but it is difficult to see the change of internal pressure,
We designed the cap of coke bottle which has bulgeable cap.
The cap will bulge when the pressure rise.


Beijing Institute of Technology

Beijing Institute of Technology
Beijing, China