| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a sheet-like lid material for a cup-like container, securing shape retention property without an aluminum layer. <P>SOLUTION: The sheet-like lid material 20 that closes a cup-like container body 10 is at least made of a laminated body including a seal layer and paper layer to be fixed around the outer circumferential edge of an opening. A long and narrow tear tape 30 is disposed on the under-surface side of the paper layer. The tear tape 30 is extended approximately orthogonal to an imaginary line connecting an unsealing tab and the center C at a position opposite the unsealing tab 21 with respect to the center C of the lid material. At an either of the end parts of the tear tape, a projecting gripping part 32 is formed from the outer circumferential edge of the lid material together with the respective layers positioned on and under the tear tape. Upon gripping and peeling off the gripping part 32, a part of the paper layer positioned on the tear tape is eliminated and the strength of the lid material within the region becomes weak. As a result, even if no aluminum layer is in existence, the shape retention property can be realized at the time of opening and closing by utilizing the gravity. <P>COPYRIGHT: (C)2010,JPO&INPIT |
