Vinylidene fluoride-based resin film
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United States of America Patent
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Nov 18, 2008
Grant Date -
Nov 29, 2007
app pub date -
Aug 10, 2005
filing date -
Aug 11, 2004
priority date (Note) -
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Abstract
A vinylidene fluoride-based resin film including polyvinylidene fluoride whose average spherocrystal diameter is less than 0.1 .mu.m that is a detection limit or lower by observation using a transmission electron microscope is provided, the average spherocrystal diameter being obtained by shaping a vinylidene fluoride-based resin in a molten state by sandwiching the resin between rollers or metal belts so as to let it cool down. Thereby, a vinylidene fluoride-based resin film and a vinylidene fluoride-based resin multilayered film having excellent transparency, weather resistance, chemical resistance, break resistance and formability are provided.
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