| 摘要 |
<p>PROBLEM TO BE SOLVED: To simplify production control, to secure rigidity, to uniformize thickness, to improve adhesion and to make it lighter as to a packaging container made by die forming a synthetic resin sheet. SOLUTION: In a laminated sheet 10a, on one face or on both front and back faces of center amorphous polyethylene terephtalate layer 15, a stretched polyethylene terephtalate layer 16 is formed. The thickness of the stretched polyethylene terephtalate layer 16 is made to be 10-50μm, and that of the amorphous polyethylene terephtalate layer 15 is made to be 500-1000μm.</p> |
