| 摘要 |
PROBLEM TO BE SOLVED: To obtain a plastic lid that is easily opened while maintaining a sufficient barriering capacity and also available for being disposed easily after opening together with an emptied container. SOLUTION: The plastic lid is made of an extruded sheet in 0.61.2mm of total thickness in a laminated structure comprising of a PP layer 2a, an Ad layer 3a, an EVOH layer 4, an Ad layer 35, and a PP layer 2b, and scores 5a and 5b, each in a depth not reaching the EVOH layer 4, are formed to the sheet, starting from the surfaces on both sides. |
