| 摘要 |
PROBLEM TO BE SOLVED: To provide a casting die, solution film-forming equipment and a solution film-forming method capable of producing a film while suppressing the difference of film thickness between a back surface layer and a surface layer. SOLUTION: The casting die 52 has a slot 106 through which a lamination dope passes. The slot 106 has a first slot part 111, a second slot part 112 and a first width reduction part 116. The second slot part 112 is formed such that the width of flow path in the direction SD is narrower than the width of flow path in the direction SD of the first slot part 111, and the first width reduction part 116 is formed such that the width of flow path in the direction SD gets to gradually narrower as approaching the second slot part 112 side from the first slot part 111 side. The width of flow path in the direction SD of the slot 106 is determined by inner wall surfaces 100a, 101a. Further, the pair of inner wall surfaces 100a, 101a are formed plane-symmetrically with respect to a symmetric surface SF. Therein, the symmetric surface SF is a flat surface which is located between the inner wall surface 100a and the inner wall surface 101a and appears as a straight line approximately parallel to the direction LD in a cross-section orthogonal to the direction B1. COPYRIGHT: (C)2009,JPO&INPIT |
