| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lid member constituted with an inner layer and an outer layer that are laminated to each other, the outer layer and inner layer being easily laminated so as to be stably peeled without requiring a complicated process such as controlling adhesive strength of an adhesive. <P>SOLUTION: The outer layer 12 is constituted of a base material layer 12a and a polyethylene resin layer 12b. The inner layer 11 is constituted of a base material 11a formed of a drawn polypropylene film, and a seal layer 11b made of a thermal adhesive resin. The lid member 10 is formed by laminating these layers so that the polyethylene resin layer 12b of the outer layer 12 and the base material layer 11a of the inner layer 11 can be interfacially peeled. The outer layer 12 and the inner layer 11 are directly laminated so that the adhesive needs not to be used, and the outer layer 12 and the inner layer 11 can be easily and stably peeled. If a lid formed by punching out the lid member 10 is heat sealed to a flange of a container at a high temperature, peeling strength does not change, and the outer layer 12 and inner layer 11 can be easily peeled by hands because the adhesive is not used on an interface between the outer layer 12 and the inner layer 11. <P>COPYRIGHT: (C)2008,JPO&INPIT |
