Energy conversion film
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United States of America Patent
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Jul 5, 2016
Grant Date -
Jul 12, 2012
app pub date -
Sep 17, 2010
filing date -
Sep 17, 2009
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Abstract
An energy conversion film, which can hold a larger amount of charges by pores in the inside of the film and has high energy conversion performances, is provided, by obtaining a porous resin film with a high expansion ratio without adopting an expansion treatment with a high-pressure gas by forming a thermoplastic resin stretched film having a specified structure. The energy conversion film includes a core layer (A) having specified pores and composed of a thermoplastic resin stretched film including a thermoplastic resin and at least one of an inorganic powder and an organic filler.
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