| 摘要 |
PROBLEM TO BE SOLVED: To provide a lid material having easy openability from a container by performing the delamination of an intermediate layer from the adhesion part of a seal layer heat-sealed to a polyethylene layer and securing sufficient sealing strength.SOLUTION: In a seal layer 10 made of low density polyethylene having a melt flow rate of 30-75 g/10 min and a thickness of 5-10 μm, the peripheral portion of an adhesion part 11 is broken while leaving the adhesion part 11 being in contact with a polyethylene layer As and a peeling surface 21a made of a mixture of polystyrene, a styrene-based elastomer and polypropylene performs delamination with the adhesion part 11 of the seal layer 10 in an intermediate layer 20 by peeling a lid material B from a container A in a state that the lid material B or the seal layer 10 becoming the other second adhesive surface of the container A is closely contact with the polyethylene layer As becoming the first adhesive surface of the container A or the lid material B sandwiching the intermediate layer 20.SELECTED DRAWING: Figure 1 |
