| 摘要 |
PROBLEM TO BE SOLVED: To provide a plastic container whose opening is stuck and sealed with a thin film without keeping a bottle in an opened state in a transfer step until it is filled with contents after it is formed, and of which this sealed portion can easily be opened. SOLUTION: A method for opening a sealed plastic bottle is such that a heating element is made close to the surface of a thin plastic film with which a mouth of the plastic bottle is sealed, and that the thin plastic film is melted to open the mouth. |
