| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a plastic vessel such as a portion pack suitable for a plastic bottle including a PET bottle. <P>SOLUTION: The plastic vessel (10) integrally comprises a bottom portion (11), a side wall (12) and a flange portion (13) obtained by molding a thermoplastic sheet. An annular recessed portion (14) making one turn around the flange portion is formed in an edge of the flange portion (13), and a projection (15) with a sharp tip is provided substantially at a center of the bottom portion (11) in a direction of an opening part. The flange portion (13) has a mechanism to be fitted to a plug portion of a plastic bottle (20), and has a structure of piercing a lid member (22) to seal the opening part of the plastic vessel by the projection (15) provided on the bottom portion (11). <P>COPYRIGHT: (C)2004,JPO |
