| 摘要 |
PURPOSE: Provided is a PET bottle to prevent leak of CO2 gas by having double-cap and groove inside mouth portion of the bottle to gather a portion of beverage and to dip the double-cap under the portion, thereby preventing the leak of CO2 gas and storing the beverage. CONSTITUTION: The PET bottle has a double-cap(1b), a groove(2b) and a supporting portion(2a) for the groove, a mouth(4) of the bottle longer than the supporting portion. The beverage usually flows through the supporting portion(2a) into the mouth(4) when pouring the beverage out of the bottle. When the PET bottle stands up, the beverage is gathered into the groove(2b) and make the cap(1b) to be sunk in the gathered beverage. The mouth and the groove portion are integrated and molded to actively prevent the leak of CO2 gas. Additionally, the inner side of the mouth(4) and the supporting portion(2a) are integrated and molded.
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