| 摘要 |
PROBLEM TO BE SOLVED: To improve adhesion, moldability, and shock resistance by imparting orientation intensity ratios in ranges represented by specified expressions to a side laminated to a metallic sheet and a side not laminated to the metallic sheet. SOLUTION: When lamination is performed such that an orientation strength ratio Ha of a side laminated to a metallic sheet measured through a laser Raman spectroscopy method is made to be 0.8<=Ha<=1.2, an orientation strength ratio Hb of a side not laminated to the metallic sheet measured through a laser Raman spectroscopy method is made to be 1.4<=Ha<=2.2. Ha, Hb: Is/I ZD, where Is: Raman band strength measured near 1615 cm<1> in deflection vertical to the film thickness direction, and I ZD: Raman band strength measured near 1615 cm<1> in deflection horizontal to the film thickness direction. The orientation strength Xi of the polyester film measured through X-ray diffraction is made to be 20-30 for the adhesion at the time of laminating, moldability at the time of can manufacturing, heat resistance, shock resistance, or the like. |
