A stretchable film includes, in a stacked form: a polyurethane film containing a repeating unit having a fluorine atom; and a polyurethane film containing a repeating unit having a silicon atom. At least one surface of the stretchable film is made of the polyurethane film containing a repeating unit having a fluorine atom. Thus, provided are: a stretchable film having excellent stretchability and strength, with the film surface having excellent water repellency; and a method for forming the stretchable film.
                            一种可拉伸薄膜以堆叠的形式包括:含有具有
氟原子的重复单元的聚
氨酯薄膜;以及含有具有
硅原子的重复单元的聚
氨酯薄膜。可拉伸薄膜的至少一个表面由含有
氟原子重复单元的聚
氨酯薄膜制成。因此,本发明提供了:一种具有优异拉伸性和强度的可拉伸薄膜,薄膜表面具有优异的防
水性;以及一种形成该可拉伸薄膜的方法。