Apparatus for controlling color of polarizing film and method of controlling the same
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United States of America Patent
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Dec 6, 2016
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Nov 20, 2014
app pub date -
Sep 20, 2012
filing date -
Sep 29, 2011
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Abstract
An apparatus for controlling a color of a film includes a dyeing bath to dip a washed PVA film in an aqueous iodine solution and an aqueous potassium solution and then dye the PVA film therewith, a complementary bath to dip the PVA film in an aqueous potassium solution and then dye the PVA film therewith, a device oven to dry the PVA film having the oriented iodine and potassium, a 4-stage oven to dry the PVA film dried in the device oven, and a central controller to predict a color value of the polarizing film.
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