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When you need to brush your teeth , you have to squeeze toothpaste out of the tube
The normal toothpaste mouth is circulr , and you will meet follow problems :
1. The toothpaste always falling down.
2. It is wasteful to use too much toothpaste.
Now ,we change the shape of the oothpaste mouth to solve these problems
1. Enlarge the active surface to prevent the toothpaste from falling off.
2. Enlarge the active surface between the toothpaste with teeth ,it can be better to clean your teeth.
3. It needs less toothpaste attain saving.
Ningbo University of Technology