| 摘要 |
PURPOSE:To obtain the title film excellent in transparency by forming one which contains spherulites with a specified mean radius and has a specified thickness. CONSTITUTION:The film contains spherulites with a mean radius of 1.6mum or smaller and has a thickness of 1-30mum. As the vinylidene fluoride resin for the film, a vinylidene fluoride homopolymer, a copolymer containing at least 70mol% vinylidene fluoride as the constituent, and a mixture of the copolymers can be used. Examples of monomers copolymerized with vinylidene fluoride include tetrafluoroethylene, hexafluoropropylene, trifluoroethylene, trifluorochloroethylene and vinyl fluoride. |
