Casting apparatus, casting film forming method and solution casting method

摘要

PURPOSE: A metal drum, a flexible device, a forming method of flexible membrane, and a solution unveiling method are provided to reduce cutting scrap malfunction and non-uniform thickness malfunction caused by a welding unit and to efficiently manufacture film of wide band shape. CONSTITUTION: A flexible device comprises a pair of metal drums(124,125), an endless band(91), a flexible die(142), and a film drier(151). The endless band is rolled in the pair of metal drums for locating a welding unit(91w) in a groove and moves to a longitudinal direction by rotating of the metal drum. The flexible die discharges polymer and dope including solvent to surface of the endless band. The film drier is made of the discharged dope, shoots heating wind to flexible membrane which is formed on the surface, and evaporates the solvent from the flexible membrane. [Reference numerals] (91) Band