| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an easy-to-peel lid to be put over a cup container 30 made of expanded polystyrene or the like for thermally fusion-bonding the periphery 22 of the lid 20, wherein a paper material layer 4 of the lid 20 without an aluminum foil laminated is resistant to an influence of steam generated from hot water and dead foldability is applied respectively to a resin film layer 5 and an easy-to-peel layer 6 of the lid 20 by suppressing their properties to restore to an original shape. <P>SOLUTION: The easy-to-peel lid comprises the paper material layer 4, the resin film layer 5 and the easy-to-peel layer 6, which are laminated. Numerous creases 2, 2, 2..., extending in a direction orthogonal to the direction of opening the lid are provided on the resin film layer 5 and the easy-to-peel layer 6. In addition, one or more strings of linear or perforated cut lines 3, 3, 3,..., extending in the direction orthogonal to the direction of opening the lid are provided on the paper material layer 4 on a region ranging from the vicinity of the center of the lid 20 to a tab 21. <P>COPYRIGHT: (C)2004,JPO |
