| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lid material, which contains no aluminum foil to allow the use of a metal detector for product inspection, and retains its fine dead holding property when it is peeled off to prevent the closing of an opening formed by peeling off the lid material. <P>SOLUTION: The lid material consists of an inner lid and the outer lid, which contain no aluminum foil and are layered peelably. An grip is formed on the outer peripheral edge of the lid material. The inner lid has an outer lid peel-off starting cut, a plurality of hot water discharging cuts, and an opening cut. The interior of the outer lid has peel-off layers in an area inside of the peel-off starting cut, and outside of the hot water discharging cuts and the opening cut. The peel-off layers consist of first peel-off layers having smaller peeling strength and second peel-off layers having larger peeling strength, both layers formed alternately, like stripes, in perpendicular to the line connecting the grip to the center of the lid material, in an area outside of the opening cut. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
