Brightening ink composition for printing, paper container material using the brightening ink composition, and heat insulating foamed paper container
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United States of America Patent
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Nov 17, 2015
Grant Date -
May 12, 2011
app pub date -
Mar 30, 2009
filing date -
Mar 31, 2008
priority date (Note) -
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Abstract
There is provided a brightening ink composition for printing intended for realizing a heat insulating foamed paper container produced by foaming a low-melting point film by a heat treatment, such as a heat insulating foamed paper cup, the brightening ink composition conforming to the foaming without the occurrence of ink splits (cracks) upon foaming, having very small differences in level between the brightening printed areas and other printed areas at the container surface after foaming, making the container surface almost smooth, and having excellent design applicability and aesthetic properties as well as excellent heat resistance and print quality. A brightening ink composition containing a brightening material that imparts a sense of brightness, silicon dioxide, a binder resin and a solvent is prepared, and the brightening ink composition is used to form a printed layer of a paper container material for producing a heat insulating foamed paper container.
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