A multi-layer film, including: a substrate film; and an adhesion facilitating layer provided on the substrate film, wherein the adhesion facilitating layer is a cured product of a composition that contains a polyurethane, a crosslinking agent capable of crosslinking the polyurethane, and a nonvolatile base, and the polyurethane has a tensile elastic modulus of equal to or larger than 1,000 N/mm2 and equal to or smaller than 5,000 N/mm2.
                            一种多层薄膜,包括:基底薄膜;以及设置在基底薄膜上的附着力促进层,其中附着力促进层是一种组合物的固化产物,该组合物包含聚
氨酯、能够使聚
氨酯交联的
交联剂以及非挥发性基料,且聚
氨酯的拉伸弹性模量等于或大于 1,000 N/mm2 且等于或小于 5,000 N/mm2。