| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a packaging material in which sufficient seal strength can be obtained and appearance quality is excellent while wrinkles are hardly generated.SOLUTION: A packaging material 1 includes a heat-resistant resin layer 2 as an outer layer, a thermoplastic resin film layer 3 as an inner layer, and a metal foil layer 4 disposed therebetween. For the thermoplastic resin film 3, a thermoplastic resin film, in which tensile yield strength in a film extrusion direction, tensile yield strength in a direction orthogonal to the film extrusion direction, tensile yield strength in a direction of a right oblique angle of 45 degrees with respect to the film extrusion direction, and tensile yield strength in a direction of a left oblique angle of 45 degrees with respect to the film extrusion direction are equal to 15 MPa or more respectively, is used.</p> |
