Method of preparing hard coating film
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United States of America Patent
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Feb 20, 2018
Grant Date -
Jun 18, 2015
app pub date -
May 31, 2013
filing date -
May 31, 2013
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Abstract
A method of preparing a hard coating film by applying a first hard coating composition onto one side of a supporting substrate, performing a first photocuring by irradiating one side of the supporting substrate, applying a second hard coating composition onto the other side of the supporting substrate, performing a second photocuring by irradiating the other side of the supporting substrate which the second coating composition applied on, with ultraviolet having a first wavelength and a second wavelength longer than the first wavelength.
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