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concave and convex / Beer bottle lid

concave and convex

At the moment you open the beer, the foam usually sprays out and makes everything in a mess. This design solves this problem.
There is no extra cost for this deign, the small change at the bottle top solves everything. First, manufacture a bottle top on which a round thinner part is specially designed. When the air in the bottle moves and swells and the pressure is getting greater, the round thinner part becomes convex. When the pressure in the bottle gradually getting smaller, the round part at the top is getting concave as well, this reminds people to open the bottle and drink.This design makes people’s avoids making troubles.


Dalian Nationalities University

Dalian Minzu University
Dalian, China

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Dalian Nationalities University

Dalian Minzu University
Dalian, China

Di Fang, Xuefei Liu, Jiafeng Wang, Yong Jiang

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