Silicone Air Valve and air channel in bottle cap
- État: Closed
- Prix: $100
- Propositions reçues: 13
Résumé de concours
We need a mechanical engineer to design a very small (about 4-5mm diameter) silicone one-way air valve and an air channel that fits inside a standard push pull PET bottle cap (28mm diameter Coke type cap, PCO 1810 standard).