| 摘要 |
PURPOSE:To prevent the separation of an outer layer and an inner layer during a distribution stage and to make only the outer layer easily separable and removable from a lid body immediately before electronic oven cooking, by bonding the first release layer formed to the inner layer the second release layer partially formed to the back surface of the outer layer only at the tab part of the lid body and the olefinic resin layer interposed therebetween and imparting specific relation to the interlaminar strengths of said layers. CONSTITUTION:This lid body is constituted of an aluminum foil outer layer 23 and an inner layer 26 wherein the hack surface of a synthetic resin layer is thermally welded to the mouth edge part of a container main body and the interlaminar strength [A] between an olefinic resin layer 29 and the second release layer 28, the interlaminar strength [B] between said resin layer 29 and the first release layer 27, the interlaminar strength [C] between the back surface of the inner layer and the mouth edge part of the container main body and the interlaminar strength [D] between the first release layer and the surface of the inner layer have the relation of interlaminar strength [A]<interlaminar strength [B]<interlaminar strength [C] and the relation of interlaminar strength [B]<interlaminar strength [D] and, further, the interlaminar strength [B] is set so as to be received within a range of 20-120g/15mm width. |
